Patent Description:
An air conditioner is a device that artificially adjusts and controls a temperature, humidity, a flow rate and other parameters of an ambient air in a building or a structure. The air conditioner typically includes an electric control box, which is provided with electronic components such as a filter and a reactor. However, heat generated during operation of the electronic components can cause a rising temperature of the electronic components, which affects operational stability of the electronic components.

<CIT> concerns an electrical box and an air conditioner.

Aspects of the present invention are defined in the accompanying claims.

A primary object of the present invention is to provide an electronic control box, an air conditioner outdoor unit, and an air conditioner, capable of improving operational reliability of electronic components.

To achieve the above object, the present invention proposes an electronic control box as defined in claim <NUM>. The electric control box includes a box body; and a mounting plate arranged in the box body. The mounting plate is provided with a first fan and a plurality of electronic components at a mounting side of the mounting plate. The first fan is configured to form first heat dissipation airflow flowing along a first heat dissipation path. The first heat dissipation airflow is diverted by an inner wall of the box body to form second heat dissipation airflow flowing along a second heat dissipation path. The plurality of electronic components are distributed over the first heat dissipation path and the second heat dissipation path. The first heat dissipation path and the second heat dissipation path are located at the mounting side of the mounting plate.

Beneficial effect of the present invention is that: the first fan is provided to form the first heat dissipation airflow flowing along the first heat dissipation path, and the first heat dissipation airflow is formed into the second heat dissipation airflow flowing along the second heat dissipation path after being diverted by the inner wall of the box body; and the plurality of electronic components is distributed over the first heat dissipation path and second heat dissipation path, and therefore heat generated during operation of the electronic components can be carried away by the first and second heat dissipation airflows. In this way, a temperature during the operation of the electronic components remains within a reliable range, and the electronic component thus has high operational stability.

Based on the above-mentioned technical solutions, the present invention can also include the following improvements.

Further, the first heat dissipation path and the second heat dissipation path may be connected end to end sequentially to form a circulation heat dissipation path.

Further, the mounting plate may divide a space in the box body into a first chamber and a second chamber. The plurality of electronic components may be arranged in the first chamber, and the second chamber may be internally provided with a heat exchanger.

Further, the mounting plate may have a first air return inlet and a second air return inlet that penetrate the mounting plate. The first air return inlet may be located at a head end of the first heat dissipation path, and the second air return inlet may be located at a tail end of the second heat dissipation path.

Further, the first fan may have an inlet in communication with the first air return inlet and an outlet facing towards the head end of the first heat dissipation path.

Further, the mounting plate may be a rectangular-shaped plate. The first air return inlet may be located at a first corner of the rectangular-shaped plate; the second air return inlet may be located at a second corner of the rectangular-shaped plate; and the second corner and the first corner may be located at diagonal ends of the rectangular-shaped plate on one diagonal, respectively.

Further, a plurality of second air return inlets may be provided and arranged at intervals along a first side of the mounting plate; and the first air return inlet may be arranged at a second side of the mounting plate. The first side may be opposite to the second side.

Further, the electric control box may further include a second fan arranged on the first heat dissipation path or the second heat dissipation path.

Further, the second fan may be arranged at a head end of the second heat dissipation path.

Further, the second fan may be arranged at a tail end of the second heat dissipation path; the first fan has an air outlet direction that does not intersect an air outlet direction of the second fan; and the second fan is configured to form third heat dissipation airflow flowing along a third heat dissipation path.

Further, the plurality of electronic components arranged at the mounting side of the mounting plate may comprise a filter and a reactor. The filter and the reactor may be distributed on the first heat dissipation path.

Further, the box body is a sealed box body.

In the related art, an electronic component is provided inside an electric control box. For example, the electronic component may be a filter, a reactor, etc. The electronic component generates heat when in use, which causes a high temperature of the electronic component, and thus reduces operation reliability of the electrical component. Therefore, it is necessary to cool down the electronic component.

In view of this, an electronic control box of embodiments of the present invention is provided with a first fan configured to form first heat dissipation airflow. The first heat dissipation airflow is diverted to form second heat dissipation airflow after the first heat dissipation airflow encounters obstruction of the box body. The first heat dissipation airflow and the second heat dissipation airflow are used to carry away heat of the electronic component, and therefore the electronic component is cooled down to enable high operation reliability of the electronic component.

Technical solutions according to embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the embodiments described below are only a part of the embodiments of the present disclosure, rather than all embodiments of the present disclosure. On a basis of the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor shall fall within the protection scope of the present disclosure.

The electric control box of the embodiments of the present invention may be, for example, a closed electric control box. In this way, damage to the electronic component in the electric control box caused by other foreign matters such as water drops and dust entering the electric control box can be avoided to achieve an effect of waterproof, dust prevention and anti-corrosion.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, embodiments of the present invention provide an electric control box. The electric control box includes a box body <NUM>, a mounting plate <NUM>, a first fan <NUM> and an electronic component <NUM>. The mounting plate <NUM> and the first fan <NUM> are arranged inside the box body <NUM>, and the box body <NUM> is configured to protect the mounting plate <NUM> and the first fan <NUM>. The mounting plate <NUM> is configured for a mounting of the first fan <NUM> and the electronic component <NUM>. The first fan <NUM> is configured to drive air in the box body <NUM> to flow and form first heat dissipation airflow.

Referring to <FIG>, the first heat dissipation airflow formed by the first fan <NUM> flows along a first heat dissipation path a, and after the first heat dissipation airflow flows to an inner wall of the box body <NUM>, the first heat dissipation airflow is diverted and formed into second heat dissipation airflow flowing along a second heat dissipation path b. An angle between the first heat dissipation path a and the second heat dissipation path b may be any non-zero angle, such as <NUM>° illustrated in <FIG>.

The electronic component <NUM> is arranged at a mounting side of the mounting plate <NUM>. In some embodiments, the electronic component <NUM> may be mounted at the mounting side of the mounting plate <NUM> through threading. In some other embodiments, the electronic component <NUM> may be mounted at the mounting side of the mounting plate <NUM> through welding.

A plurality of electronic components <NUM> is provided and arranged on the first heat dissipation path a and the second heat dissipation path b. The first heat dissipation airflow flowing along the first heat dissipation path a takes away heat generated during operation of the electronic component <NUM> arranged on the first heat dissipation path a, and therefore the electronic component <NUM> arranged on the first heat dissipation path a is cooled down. The second heat dissipation airflow flowing along the second heat dissipation path b takes away heat generated during operation of the electronic component <NUM> arranged on the second heat dissipation path b, and therefore the electronic component <NUM> arranged on the second heat dissipation path b is cooled down.

In the electric control box of the embodiments of the present invention, the first fan <NUM> is provided, and the first fan <NUM> configured to form the first heat dissipation airflow flowing along the first heat dissipation path a. After the first heat dissipation airflow flows to the inner wall of the box body <NUM>, a flowing direction of the first heat dissipation airflow changes and the first heat dissipation airflow is diverted to form the second heat dissipation airflow flowing along the second heat dissipation path b. The heat generated during the operation of the electronic components <NUM> arranged on the first heat dissipation path a and the second heat dissipation path b is taken away by the first heat dissipation airflow and the second heat dissipation airflow, and therefore a temperature of the electronic component <NUM> remains within a reliable temperature range. In this way, operational reliability of the electronic component <NUM> is improved.

In some embodiments, the first heat dissipation path a and the second heat dissipation path b are connected end to end sequentially to form a circulation heat dissipation path. The circulating heat dissipation path is located in the box body <NUM>. A tail end of the first heat dissipation airflow flowing along the circulation heat dissipation path is connected to a head end of the second heat dissipation airflow, and a head end of the first heat dissipation path a flowing along the circulation heat dissipation path is connected to a tail end of the second heat dissipation airflow. Circulation airflow is formed by the first heat dissipation airflow and the second heat dissipation airflow and located in the box body <NUM>. In this case, both the first heat dissipation airflow and the second heat dissipation airflow exchange heat with the electronic component <NUM> and the box body <NUM>. Therefore, the heat generated during the operation of the electronic component <NUM> is exchanged to an outer side of the box body <NUM>.

In some embodiments, the first heat dissipation path a and the second heat dissipation path b may also not be formed into a circulation path. In these embodiments, the first heat dissipation airflow and the second heat dissipation airflow may also not be formed into circulation airflow.

Referring to <FIG> and <FIG>, the mounting plate <NUM> divides a space in the box body <NUM> into a first chamber <NUM> and a second chamber <NUM>. The plurality of electronic components <NUM> is arranged in the first chamber <NUM>. The first heat dissipation airflow and the second heat dissipation airflow are located in the first chamber <NUM>. The second chamber <NUM> is internally provided with a heat exchanger <NUM>.

Referring to <FIG> and <FIG>, the mounting plate <NUM> has a first air return inlet <NUM> and a second air return inlet <NUM>. A shape and a size of the first air return inlet <NUM> are not limited specifically. The first air return inlet <NUM> is a through hole, and two ends of the first air return inlet <NUM> are in communication with the first chamber <NUM> and the second chamber <NUM>, respectively. A shape and a size of the second air return inlet <NUM> are not limited specifically. The second air return inlet <NUM> is a through hole, and two ends of the second air return inlet <NUM> are in communication with the first chamber <NUM> and the second chamber <NUM>, respectively. The first air return inlet <NUM> is located at a head end of the first heat dissipation path a, and the second air return inlet <NUM> is located at a tail end of the second heat dissipation path b.

During operation of the first fan <NUM>, the first fan <NUM> drives air in the second chamber <NUM> into the first chamber <NUM> through the first air return inlet <NUM>, and the first heat dissipation airflow flowing along the first heat dissipation path a is formed. The first heat dissipation airflow is diverted by the inner wall of the box body to form the second heat dissipation airflow flowing along the second heat dissipation path b, and the second heat dissipation airflow enters the first chamber <NUM> through the second air return inlet <NUM>. Therefore, circulation airflow located in the box body <NUM> is formed and circularly flows in the first chamber <NUM> and the second chamber <NUM>.

When the first heat dissipation airflow and the second heat dissipation airflow in the first chamber <NUM> exchange heat with the electronic component <NUM> in the first chamber <NUM>, the heat generated during the operation of the electronic component <NUM> is exchanged into the first heat dissipation airflow and the second heat dissipation airflow in the first chamber <NUM>. When air in the second chamber <NUM> exchanges heat with the heat exchanger <NUM>, the heat carried in the air in the second chamber <NUM> is exchanged in a refrigerant in the heat exchanger <NUM>, and the refrigerant flows out of the box body <NUM>. Therefore, the heat generated during the operation of the electronic component <NUM> is exchanged to the outer side of the box body <NUM>. According to the present invention, the heat exchanger is a microchannel heat exchanger. The microchannel heat exchanger includes at least two groups of microchannels. The at least two groups of microchannels include a plurality of first microchannels through which a first refrigerant flow flows and a plurality of second microchannels through which a second refrigerant flow flows. The second refrigerant flow absorbs heat from the first refrigerant flow to subcool the first refrigerant flow, or the first refrigerant flow absorbs heat from the second refrigerant flow to subcool the second refrigerant flow.

The microchannel heat exchanger in the embodiments of the present invention may also be configured as an economizer for an air conditioner. In this way, the microchannel heat exchanger may not only be configured to cool the electronic components in the electric control box, but also configured as the economizer. Therefore, a need for an additional economizer arranged outside the electric control box can be avoided. Thus, a structure of the air conditioner is simplified. As a result, the space is saved, and cost can also be saved.

A structure of the box body <NUM> is described in detail below with reference to the accompanying drawings.

In an embodiment illustrated in <FIG>, the box body <NUM> includes a box body <NUM> and a box cover <NUM>. The box body <NUM> includes a bottom plate <NUM> and a side plate <NUM> arranged at an edge of the bottom plate <NUM>. A chamber having an opening is formed by the bottom plate <NUM> and the side plate <NUM>. The box cover <NUM> covers the box body <NUM> to close the opening of the chamber. The bottom plate <NUM> may be a rectangular-shaped plate as illustrated in <FIG>. The side plate <NUM> may be a rectangular-shaped ring. The box cover <NUM> may be a rectangular-shaped plate as illustrated in <FIG>. A rectangular-shaped box is formed by the box body <NUM> and the box cover <NUM>.

A structure of the mounting plate <NUM> is described in detail below with reference to the accompanying drawings.

The mounting plate <NUM> may be in a rectangular shape as illustrated in <FIG> and may be arranged in the box body <NUM> through threading, snapping, and welding, etc. For example, the mounting plate <NUM> may be provided with a bending plate at an edge of the mounting plate <NUM>. The bending plate has a mounting hole. The box body <NUM> is provided with a fixing plate. The fixing plate may be an L-shaped plate. The fixing plate has an end welded to the box body <NUM> and another end having a cooperating hole. The mounting hole in the bending plate corresponds to the cooperating hole in the fixing plate. The mounting plate <NUM> can be fixed in the box body <NUM> by using a bolt and a screw mounted in the mounting hole and the cooperating hole.

In an embodiment illustrated in <FIG>, the mounting plate <NUM> has a plurality of second air return inlets <NUM> arranged at intervals along a first side of the mounting plate <NUM>, the first air return inlet <NUM> is arranged at a second side of the mounting plate <NUM>, and the first side is opposite to the second side. For example, in the embodiment illustrated in <FIG>, the first side is an upper side of the mounting plate, the second side is a lower side of the mounting plate, the first air return inlet <NUM> is arranged at an end of the first side, and the second air return inlet is arranged at an entire edge of the second side. In this way, a contact area between the air entering the second chamber <NUM> from the first chamber <NUM> and the heat exchanger <NUM> can be increased. Therefore, efficiency of heat exchange between the air in the second chamber <NUM> and the heat exchanger <NUM> is increased.

In some embodiments, the mounting plate <NUM> is a rectangular-shaped plate. The first air return inlet <NUM> is located at a first corner of the rectangular-shaped plate. The second air return inlet <NUM> is located at a second side corner of the rectangular-shaped plate. The second corner and the first corner are located at diagonal ends of the rectangular-shaped plate on one diagonal, respectively. Therefore, the air in the first chamber <NUM> may also enter the second chamber <NUM> through the second air return inlet <NUM>, and the air in the second chamber <NUM> may also enter the first chamber <NUM> through the first air return inlet <NUM>.

The first fan <NUM> is described in detail below with reference to the accompanying drawings.

The first fan <NUM> at the mounting plate <NUM> may be one of a centrifugal fan, an axial flow fan, and a cross-flow fan. In an embodiment illustrated in <FIG>, the first fan <NUM> may be an axial fan. It can be understood that, for those skilled in the art, replacing the first fan <NUM> with a centrifugal fan or a cross-flow fan is a routine substitution.

Referring to <FIG> and <FIG>, a casing of the first fan <NUM> is fixed to the mounting plate <NUM> through the threading, the first fan <NUM> has an inlet in communication with the first air return inlet <NUM> of the mounting plate <NUM> and an outlet facing towards the head end of the first heat dissipation path a. The first fan <NUM> sucks the air in the second chamber <NUM> into the first chamber <NUM> to form the first heat dissipation airflow in the first chamber <NUM>.

The electric control box further includes a second fan <NUM>, and the second fan <NUM> is described in detail below with reference to the accompanying drawings.

Referring to <FIG> and <FIG>, the second fan <NUM> is arranged at the mounting plate <NUM> and located in the first chamber <NUM>, and the second fan <NUM> is arranged on the first heat dissipation path a or the second heat dissipation path b. The second fan <NUM> may be one of a centrifugal fan, an axial flow fan, and a cross-flow fan.

In some embodiments, the second fan <NUM> is arranged at a head end of the second heat dissipation path b, the first heat dissipation path a is, for example, along a long edge at an upper side of the box body <NUM> illustrated in <FIG>, the second heat dissipation path b is, for example, along a short edge at a right side of the box body <NUM> illustrated in <FIG>, and the head end of the second heat dissipation path b is, for example, at a right upper corner position of the box body <NUM> illustrated in <FIG>. In this case, the second fan <NUM> may be, for example, a cross-flow fan.

In some other embodiments, the second fan <NUM> is disposed at a tail end of the second heat dissipation path b, the first fan <NUM> has an air outlet direction that does not intersect an air outlet direction of the second fan <NUM>, the second fan <NUM> is configured to form third heat dissipation airflow flowing along a third heat dissipation path c, and the second fan is, for example, a centrifugal fan. The third heat dissipation path c is, for example, along a long edge at the lower side of the box body <NUM> illustrated in <FIG>. In this embodiment, the air outlet direction of the first fan <NUM> and the air outlet direction of the second fan <NUM> do not conflict. The air outlet direction of the first fan <NUM> and the air outlet direction of the second fan <NUM> are opposite to each other or relatively inclined. For example, the first fan <NUM> blows air to the right, the second fan <NUM> blows air downwards. For example, the first fan <NUM> blows air to the right, the second fan <NUM> blows air to the left, and the outlet of the first fan <NUM> is staggered with the outlet of the second fan <NUM>.

The first fan <NUM> cooperates with the second fan <NUM> to regulate a flow rate and air volume of the air in the box body <NUM>. In this way, heat exchange efficiency between the air in the first chamber <NUM> and the electronic component <NUM> in the first chamber <NUM> is increased. Therefore, the heat generated during the operation of the electronic component <NUM> is carried away in time. As a result, the operational stability of the electronic component <NUM> is increased.

The electronic component <NUM> is described below with reference to the accompanying drawings.

The plurality of electronic components <NUM> are divided into a first component group and a second component group that are arranged in a width direction of the box body <NUM>. The first component group is arranged close to an upper edge of the box body <NUM>, and the second component group is arranged close to a lower edge of the box body <NUM>.

The number of electronic components <NUM> contained in the first component group is not specifically limited, and may be one, two, three, etc. For example, when three electronic components in the first component group are provided, three electronic components <NUM> in the first component group are arranged at intervals along the first heat dissipation path a.

In the embodiment illustrated in <FIG>, the first component group may include a reactor <NUM> and a filter <NUM>, two reactors <NUM> may be provided, the filter <NUM> and the reactor <NUM> are arranged at intervals in a flow direction of the first heat dissipation airflow, and the filter <NUM> is arranged upstream of the reactor <NUM>. In <FIG>, the filter <NUM> and the reactor <NUM> are arranged in a length direction of the box body <NUM> illustrated in <FIG>, the filter <NUM> is close to the head end of the first heat dissipation path a, and the reactor <NUM> is close to the tail end of the first heat dissipation path a.

The number of the electronic components <NUM> contained in the second component group is not specifically limited, and may be one, two, three, etc. For example, when four electronic components in the second component group are provided, four electronic components <NUM> in the second component group are arranged at intervals along the second heat dissipation path b.

In the embodiment illustrated in <FIG>, the electric control box further includes an extension plate <NUM> and an electric control module assembly <NUM>, two electric control module assemblies <NUM> may be provided, and the extension plate <NUM> and the electric control module assembly <NUM> are located in the box body <NUM>, and the extension plate <NUM> and the electric control module assembly <NUM> are located in the first chamber <NUM>. The second component group includes the expansion board <NUM> and the electric control module assembly <NUM> that are circuit plates. The extension plate <NUM> and the electric control module assembly <NUM> are arranged at intervals along the second heat dissipation path b. An arrangement direction of the expansion board <NUM> and the electric control module assembly <NUM> is parallel to the length direction of the box body <NUM> illustrated in <FIG>. The extension plate <NUM> is opposite to the filter <NUM>, and the electric control module assembly <NUM> is opposite to the reactor <NUM>. As illustrated in <FIG> and <FIG>, in the width direction of the box body <NUM>, the filter <NUM> protrudes towards the extension plate <NUM> relative to the reactor <NUM>.

The heat exchanger <NUM> is described below with reference to the accompanying drawings.

Referring to <FIG>, a part of the heat exchanger <NUM> is located inside the box body <NUM>, and a part of the heat exchanger <NUM> outside the box body <NUM> is in communication with a condenser outside the electric control box. There is a flowing refrigerant inside the heat exchanger <NUM>, and the refrigerant circulates in the heat exchanger <NUM> and the condenser. The heat exchanger <NUM> may be arranged inside the second chamber <NUM>, and the heat exchanger <NUM> may exchange heat with air flowing from the first chamber <NUM> to the second chamber <NUM>. The air flowing from the first chamber <NUM> to the second chamber <NUM> is air after exchanging heat with the electronic components <NUM> in the first chamber <NUM>. After the heat exchanger <NUM> exchanges the heat with the air flowing from the first chamber <NUM> to the second chamber <NUM>, heat carried by the air flowing from the first chamber <NUM> to the second chamber <NUM> is exchanged into a refrigerant in the heat exchanger <NUM>. The refrigerant flows into the condenser located outside the box body <NUM>, and the condenser exchanges heat with air outside the box body <NUM>. In this way, the heat generated during the operation of the electronic components <NUM> is exchanged to the outer side of the box body <NUM>.

With continued reference to <FIG>, the heat exchanger <NUM> generally includes a refrigerant heat exchange portion <NUM> having an entry inlet and an output outlet. The refrigerant enters an inner side of the refrigerant heat exchange portion <NUM> through the entry inlet and flows from the inner side of the refrigerant heat exchange portion <NUM> to an outer side of the refrigerant heat exchange portion <NUM> through the output outlet.

The refrigerant heat exchange portion <NUM> is arranged in the second chamber <NUM>. The refrigerant circulates inside the refrigerant heat exchange portion <NUM>. The air flowing from the first chamber <NUM> to the second chamber <NUM> is in contact with the refrigerant heat exchange portion <NUM>. The refrigerant heat exchange portion <NUM> exchanges heat with the air in the second chamber <NUM>. Heat carried by the air in the second chamber <NUM> is exchanged into a refrigerant inside the refrigerant heat exchange portion <NUM>. The refrigerant carrying the heat flows to the condenser outside the box body <NUM>. The heat carried in the refrigerant in the condenser is exchanged into the air outside the box body <NUM>. In this way, the heat generated during the operation of the electronic component <NUM> is exchanged into the air outside the box body <NUM> to enable the operational reliably of the electronic component <NUM>.

With continued reference to <FIG>, the heat exchanger <NUM> further includes a refrigerant entry pipe <NUM> and a refrigerant output pipe <NUM>. The refrigerant entry pipe <NUM> has a first end in communication with the entry inlet of the refrigerant heat exchange portion <NUM> and a second end located outside the box body <NUM> and in communication with the condenser. The refrigerant output pipe <NUM> has a first end in communication with the output outlet of the refrigerant heat exchange portion <NUM> and a second end located outside the box body <NUM>. Moreover, the refrigerant output pipe <NUM> is in communication with the condenser. In this way, the heat exchanger <NUM> is in communication with the condenser outside the box body <NUM>.

The electric control box of the present invention is configured for an outdoor unit of an air conditioner, for example for an air conditioner outdoor unit of a central air conditioner. The condenser connected to the second end of the refrigerant output pipe <NUM> and the second end of the refrigerant entry pipe <NUM> may be a condenser of the central air conditioner. In this way, heat exchange between the refrigerant and the air inside the electric control box can be achieved by using the refrigerant in an operating process of the central air conditioner to allow the refrigerant to exchange the heat generated during the operation of the electronic component <NUM> to the outside of the electric control box.

In an embodiment where the heat exchanger <NUM> is provided, for example, as illustrated in <FIG> and <FIG>, the box body <NUM> has a first through hole <NUM> and a second through hole <NUM>. The refrigerant entry pipe <NUM> passes through and is fitted into the first through hole <NUM>, and the refrigerant output pipe <NUM> passes through and is fitted into the second through hole <NUM>. Moreover, the first end of the refrigerant entry pipe <NUM> is located inside the electric control box, and the second end of the refrigerant entry pipe <NUM> is located outside the electric control box. The first end of the refrigerant output pipe <NUM> is located inside the electric control box, and the second end of the refrigerant output pipe <NUM> is located outside the electric control box.

In an embodiment where the heat exchanger <NUM> is provided, a first sealing ring is provided between the refrigerant entry pipe <NUM> and the box body <NUM> and configured to seal the refrigerant entry pipe <NUM> and a hole wall of the first through hole <NUM>. A second sealing ring is provided between the refrigerant output pipe <NUM> and the box body <NUM> and configured to seal the refrigerant output pipe <NUM> and a hole wall of the second through hole <NUM>. In this way, liquid such as rainwater outside the electric control box can be prevented from entering the electric control box through the first through hole <NUM> and the second through hole <NUM>. Therefore, the electronic component <NUM> has high safety in use.

<FIG> is another schematic structural view of an electric control box according to an embodiment of the present invention, <FIG> is another schematic structural view <NUM> of an electric control box according to an embodiment of the present invention, <FIG> is a schematic structural view of an air duct partition plate of an electric control box according to an embodiment of the present invention, and <FIG> is a partial view of a position A illustrated in <FIG>.

Referring to <FIG>, and in accordance with the present invention, the electric control box for an outdoor unit of an air conditioner includes a box body <NUM>, a mounting plate <NUM> and a first fan <NUM>. Preferably an air duct partition plate <NUM> is present. A mounting space may be formed in the box body <NUM>. The mounting plate <NUM>, the first fan <NUM>, and the air duct partition plate <NUM> may be arranged in the mounting space. The box body <NUM> is configured to protect the mounting plate <NUM>, the air duct partition plate <NUM>, the first fan <NUM> that are arranged in the mounting space. The mounting plate <NUM> is located in the box body <NUM> and provided with a plurality of electronic components <NUM>. The air duct partition plate <NUM> is located in the box body <NUM> and is fixed to the mounting plate <NUM>. A cooling air duct <NUM> is formed by the air duct partition plate <NUM> and the mounting plate <NUM> and the box body <NUM>. At least some of the plurality of electronic components <NUM> are located in the cooling air duct <NUM>. The first fan <NUM> is configured to drive air to flow in the cooling air duct <NUM> to form the first heat dissipation airflow. The first heat dissipation airflow exchanges heat with the electronic components <NUM> located in the cooling air duct <NUM> to take away heat generated during operation of the electronic components <NUM> in the cooling air duct <NUM>.

In the electric control box according to the embodiments of the present invention, the cooling air duct <NUM> is formed by the air duct partition plate <NUM>, the mounting plate <NUM> and the box body <NUM>, and the air is driven by the first fan <NUM> to flow in the cooling air duct to form the first heat dissipation airflow. The first heat dissipation airflow is in contact with and exchanges heat with the electronic component <NUM> located in the cooling air duct <NUM>, and the heat generated during the operation of the electronic component <NUM> in the cooling air duct <NUM> is taken away by the first heat dissipation airflow. In this way, the temperature of the electronic component <NUM> is reduced. Therefore, the operational reliability of the electronic component <NUM> is improved.

The first fan <NUM> is further configured to form second heat dissipation airflow located outside the cooling air duct <NUM>, the first heat dissipation airflow and the second heat dissipation airflow are connected end to end sequentially to form circulation airflow located inside the box body <NUM>. The second heat dissipation airflow and the first heat dissipation airflow are both located on two sides of the air duct partition plate <NUM>.

The mounting plate <NUM> divides the chamber in the box body <NUM> into the first chamber <NUM> and the second chamber <NUM>. Each of the first fan <NUM>, the plurality of electronic components <NUM>, and the air duct partition plate <NUM> is arranged in the first chamber <NUM>. The heat exchanger <NUM> is arranged in the second chamber <NUM>.

In some embodiments, the first heat dissipation airflow and the second heat dissipation airflow may be both located in the first chamber <NUM>. In this case, circulation airflow may be formed in the first chamber <NUM>.

In some other embodiments, the second heat dissipation airflow is located in the second chamber <NUM>, and the first heat dissipation airflow is located in the first chamber <NUM>. A first end of the first heat dissipation airflow is in communication with a first end of the second heat dissipation airflow, and a second end of the first heat dissipation airflow is in communication with a second end of the second heat dissipation airflow.

In the above embodiments, the mounting plate <NUM> has a first air return inlet <NUM> and a second air return inlet <NUM> that penetrate the mounting plate <NUM>. The first air return inlet <NUM> is in communication with the inlet of the first fan <NUM>. The outlet of the first fan <NUM> is in communication with the head end of the cooling air duct <NUM>. The second air return inlet <NUM> is formed at a tail end of the cooling air duct <NUM>. The second heat dissipation airflow passing through the first air return inlet <NUM> and the second air return inlet <NUM> is formed in the second cavity <NUM>. The first air return inlet <NUM> and the second air return inlet <NUM> may enable the first heat dissipation airflow located in the first chamber <NUM> and the second heat dissipation airflow located in the second chamber <NUM> to circulate to form circulation airflow.

In the above embodiments, the first heat dissipation airflow takes away the heat generated during the operation of the electronic component in the first chamber <NUM> and enters the second chamber <NUM> through the second air return inlet <NUM>, the second heat dissipation airflow exchanges the heat with the heat exchanger <NUM> located in the second chamber <NUM> and enters the first chamber <NUM> through the first air inlet <NUM>, and the first heat dissipation airflow and the second heat dissipation airflow circulate. In this way, the heat generated during the operation of the electronic component <NUM> is exchanged into the refrigerant in the heat exchanger <NUM>, and the refrigerant in the heat exchanger <NUM> flows to the outer side of the electric control box and carries the heat out of the electric control box. As a result, the temperature of the electronic component <NUM> is reduced. Therefore, the operational reliability of the electronic component <NUM> is improved.

In the electric control box of the embodiments of the present invention, a flat surface perpendicular to an extension direction of the cooling air duct <NUM> is a cross section. A cross-sectional area of the cooling air duct <NUM> may remain unchanged all the time in a flow direction of air in the cooling air duct <NUM>, but is not limited thereto. The cross-sectional area of the cooling air duct <NUM> may also be changed in the flow direction of the air in the cooling air duct <NUM>. For example, the cross-sectional area of the cooling air duct <NUM> gradually decreases in the flow direction of air in the cooling air duct <NUM>. For example, a cross-sectional area of a middle portion of the cooling air duct <NUM> is greater than a cross-sectional area of each of two end portions of the cooling air duct <NUM>.

The box body <NUM> is described in detail below with reference to the accompanying drawings.

The box body <NUM> includes a box body <NUM> and a box cover <NUM>, the box body <NUM> includes a bottom plate <NUM> and a side plate <NUM> arranged at an edge of the bottom plate <NUM>. A chamber having an opening is formed by the bottom plate <NUM> and the side plate <NUM>. The box cover <NUM> covers the box body <NUM> to close the opening of the chamber. The box body <NUM> formed by the box body <NUM> and the box cover <NUM> is a sealed housing. The bottom plate <NUM> may be a rectangular-shaped plate. The side plate <NUM> may be a rectangular-shaped ring. The box cover <NUM> may be a rectangular-shaped plate. A rectangular-shaped box is formed by the box body <NUM> and the box cover <NUM>.

The box body <NUM> has a first through hole <NUM> and a second through hole <NUM>. The refrigerant entry pipe <NUM> passes through and is fitted into the first through hole <NUM>. The refrigerant output pipe <NUM> passes through and is fitted into the second through hole <NUM>.

The mounting plate <NUM> may be in a rectangular shape and may be arranged in the box body <NUM> through threading, snapping, and welding, etc. For example, the mounting plate <NUM> may be provided with a bending plate at an edge of the mounting plate <NUM>. The bending plate has a mounting hole. The box body <NUM> is provided with a fixing plate. The fixing plate may be an L-shaped plate. The fixing plate has an end welded to the box body <NUM> and another end having a cooperating hole. The mounting hole in the bending plate corresponds to the cooperating hole in the fixing plate. The mounting plate <NUM> can be fixed in the box body <NUM> by using a bolt and a screw mounted in the mounting hole and the cooperating hole.

The mounting plate <NUM> has a plurality of second air return inlets <NUM> arranged at intervals along a first side of the mounting plate <NUM>. The first air return inlet <NUM> is arranged at a second side of the mounting plate <NUM>. The first side is opposite to the second side. For example, the first side is an upper side of the mounting plate, the second side is a lower side of the mounting plate, the first air return inlet <NUM> is arranged at an end of the first side, and the second air return inlet is arranged at an entire edge of the second side. In this way, the contact area between the air entering the second chamber <NUM> from the first chamber <NUM> and the heat exchanger <NUM> can be increased. Therefore, the efficiency of heat exchange between the air in the second chamber <NUM> and the heat exchanger <NUM> is increased.

The heat exchanger <NUM> is described in detail below with reference to the accompanying drawings.

The heat exchanger <NUM> generally includes a refrigerant heat exchange portion <NUM> having an entry inlet and an output outlet. The refrigerant enters an inner side of the refrigerant heat exchange portion <NUM> through the entry inlet and flows from the inner side of the refrigerant heat exchange portion <NUM> to an outer side of the refrigerant heat exchange portion <NUM> through the output outlet.

The heat exchanger <NUM> further includes a refrigerant entry pipe <NUM> and a refrigerant output pipe <NUM>. The refrigerant entry pipe <NUM> has a first end located inside the electric control box and in communication with the entry inlet of the refrigerant heat exchange portion <NUM>. The refrigerant output pipe <NUM> has a first end located inside the electric control box and in communication with the output outlet of the refrigerant heat exchange portion <NUM>. The refrigerant entry pipe <NUM> has a second end located outside the electric control box. The refrigerant output pipe <NUM> has a second end located outside the electric control box. The second end of the refrigerant output pipe <NUM> and the second end of the refrigerant entry pipe <NUM> are both in communication with the condenser. In this way, a refrigerant circulation is achieved.

The electric control box of the embodiments of the present invention is configured for an outdoor unit of an air conditioner, the air conditioner may be a central air conditioner. The condenser connected to the second end of the refrigerant output pipe <NUM> and the second end of the refrigerant entry pipe <NUM> may be a condenser of the central air conditioner. In this way, heat exchange between the refrigerant and the second heat dissipation airflow inside the second chamber <NUM> can be achieved by using the refrigerant in an operating process of the central air conditioner. Therefore, the operational reliability of the electronic component <NUM> is high.

A first sealing ring is provided between the refrigerant entry pipe <NUM> and the box body <NUM> and configured to seal the refrigerant entry pipe <NUM> and a hole wall of the first through hole. A second sealing ring is provided between the refrigerant output pipe <NUM> and the box body <NUM> and configured to seal the refrigerant output pipe <NUM> and a hole wall of the second through hole. In this way, liquid such as rainwater outside the electric control box can be prevented from entering the electric control box through the first through hole and the second through hole. Therefore, the electronic component <NUM> has high safety in use.

In some embodiments, the mounting plate <NUM> is fixed at the box body <NUM>, and the heat exchanger <NUM> is fixed to the mounting plate <NUM>. The mounting plate <NUM> may be connected to the box body through at least one of threading, snapping, and welding. For example, the mounting plate <NUM> may be provided with a bending plate at an edge of the mounting plate <NUM>. The bending plate has a mounting hole. The box body <NUM> is provided with a fixing plate. The fixing plate may be an L-shaped plate. The fixing plate has an end welded to the box body <NUM> and another end having a cooperating hole. The mounting hole in the bending plate corresponds to the cooperating hole in the fixing plate. The mounting plate <NUM> can be fixed in the box body <NUM> by using a bolt and a screw mounted in the mounting hole and the cooperating hole.

The heat exchanger of the present invention is a microchannel heat exchanger. The microchannel heat exchanger includes at least two groups of microchannels. The at least two groups of microchannels include a plurality of first microchannels through which a first refrigerant flow flows and a plurality of second microchannels through which a second refrigerant flow flows. The second refrigerant flow absorbs heat from the first refrigerant flow to subcool the first refrigerant flow, or the first refrigerant flow absorbs heat from the second refrigerant flow to subcool the second refrigerant flow.

The air duct partition plate <NUM> is described in detail below with reference to the accompanying drawings.

The air duct partition plate <NUM> includes a main plate body <NUM> and a secondary plate body <NUM>. The main plate body <NUM> is connected to the secondary plate body <NUM>. In an actual product, the main plate body <NUM> and the secondary plate body <NUM> may be of an integrated structure. For example, the main plate body <NUM> and the secondary plate body <NUM> may be integrally formed through injection molding or stamping molding.

The main plate body <NUM> may be connected to the secondary plate body <NUM> through the threading. For example, a first threaded hole is formed in the main plate body <NUM>, and a second threaded hole is formed in the secondary plate body <NUM>. A side surface of the main plate body <NUM> is opposite to an end surface of the secondary plate body <NUM>, and the first threaded hole corresponds to the second threaded hole. The main plate body <NUM> is connected to the secondary plate body <NUM> through threaded fasteners arranged in the first threaded hole and the second threaded hole. The main plate body <NUM> may also be connected to the secondary plate body <NUM> through at least one of the snapping, the welding, and the threading.

In some embodiments, the main plate body <NUM> may be provided with a buckle <NUM> at a side of the main plate body <NUM> facing towards the mounting plate <NUM>, the secondary plate body <NUM> is provided with a buckle <NUM> at a side of the secondary plate body <NUM> facing towards the mounting plate <NUM>, and the mounting plate <NUM> is provided with a bayonet corresponding to the buckle <NUM>. The air duct partition plate <NUM> is mounted at the mounting plate <NUM> by snapping the buckle <NUM> at the main plate body <NUM> and the buckle <NUM> at the secondary plate body <NUM> into the bayonets. A structure of the buckle <NUM> may be a structure illustrated in <FIG>, each buckle <NUM> includes two cantilevers <NUM> and a protrusion <NUM> arranged at each of the two cantilever <NUM>, and in each buckle <NUM>, the two protrusions <NUM> arranged at the two cantilevers <NUM> face away from each other.

The main plate body <NUM> is arranged relative to the secondary plate body <NUM> at an angle. For example, the angle between the main plate body <NUM> and the secondary plate body <NUM> is <NUM>°, <NUM>°, <NUM>°, etc..

The first air duct <NUM> is formed by the main plate body <NUM>, the mounting plate <NUM>, the side plate <NUM>, and the box cover <NUM>. The second air duct <NUM> is formed by the secondary plate body <NUM>, the mounting plate <NUM>, the side plate <NUM>, and the box cover <NUM>. An air outlet end of the first air duct <NUM> is in communication with an air inlet end of the second air duct <NUM>. The above cooling air duct <NUM> is formed by the first air duct <NUM> and the second air duct <NUM>.

The air duct partition plate <NUM> has a recess <NUM> configured to avoid an electronic component <NUM> facing towards the recess <NUM>. In this way, the electronic components <NUM> of different sizes can be arranged in the cooling air duct <NUM>, and the air flowing in the cooling air duct <NUM> can also be ensured.

The recess <NUM> may be formed at the main plate body <NUM> of an integrated structure, and the recess <NUM> may be formed by bending the main plate body <NUM>. The main plate body <NUM> may also be formed by sequentially connecting a first end plate <NUM>, a first plate body <NUM>, a second plate body <NUM>, a third plate body <NUM>, and a second end plate <NUM>. In this case, the recess <NUM> may be formed by the first plate body <NUM>, the second plate body <NUM>, and the third plate body <NUM>. An opening of the recess <NUM> faces towards an inner side of the cooling air duck <NUM>.

A first end of the first plate body <NUM> is connected to a first end of the second plate body <NUM>. A second end of the second plate body <NUM> is connected to a first end of the third plate body <NUM>. A second end of the third plate body <NUM> is connected to a first end of the second end plate <NUM>. A second end of the second end plate <NUM> is connected to the secondary plate body <NUM>. A first end of the first end plate <NUM> is connected to a second end of the first plate body <NUM>. A second end of the first end plate <NUM> corresponds to an air inlet end of the first air duct <NUM>. The second end of the second end plate <NUM> corresponds to an air outlet end of the first air duct <NUM>.

A length of the first plate body <NUM> may be or may not be equal to a length of the third plate body <NUM>. For example, in <FIG> and <FIG>, a length of the first plate body <NUM> is greater than a length of the third plate body <NUM>. In such design, cross-sectional areas of the first air duck <NUM> a position of the first end plate <NUM>, a position of the second plate body <NUM>, and a position of the second end plate <NUM> may be different. Therefore, the electronic components <NUM> of different sizes are easily arranged inside the first air duck <NUM>.

The electronic component <NUM> is described in detail below with reference to the accompanying drawings.

In some embodiments, each of the plurality of electronic components <NUM> may be arranged in the cooling air duct <NUM>, and the heat generated during the operation of the electronic component <NUM> is carried away in time by using the first heat dissipation airflow flowing in the cooling air duct <NUM>.

In some other embodiments, some of the plurality of electronic components <NUM> are arranged in the cooling air duct <NUM>, the remaining electronic components <NUM> are arranged outside the cooling air duct <NUM>. Moreover, the electronic component <NUM> sensitive to a temperature change may be arranged in the cooling air duct <NUM>, and the electronic component <NUM> that is less sensitive to the temperature change is arranged outside the cooling air duct <NUM>. Alternatively, an electronic component <NUM> that generates a relatively large amount of heat and is easily affected by the temperature in an operation state may be arranged in the cooling air duct <NUM>, and an electronic component <NUM> that generates a relatively small amount of heat and is not easily affected by the temperature in the operation state is arranged outside the cooling air duct <NUM>.

The plurality of electronic components <NUM> and the air duct partition plate <NUM> are located in a same side of the mounting plate <NUM>, and some of the plurality of electronic components <NUM> are located in the cooling air duct <NUM>. That is, some of the electronic components <NUM> are located at a first side of the air duct partition plate <NUM>, and the remaining electronic components <NUM> are located at a second side of the air duct partition plate <NUM>. The first side of the air duct partition plate <NUM> is, for example, an upper side illustrated in <FIG>, and the second side of the air duct partition plate <NUM> is, for example, a lower side illustrated in <FIG>. The first side of the air duct partition plate <NUM> is opposite to the second side of the air duct partition plate <NUM>.

The plurality of electronic components <NUM> may include a reactor <NUM> and a filter <NUM>. Two reactors <NUM> may be provided. The filter <NUM> and the reactor <NUM> are arranged at intervals in the flow direction of the first heat dissipation airflow. When the reactor <NUM> and the filter <NUM> are arranged in the cooling air duct <NUM>, the filter <NUM> is arranged upstream of the reactor <NUM>. When the filter <NUM> and the reactor <NUM> are arranged in the first air duct <NUM>, the filter <NUM> and the reactor <NUM> are arranged in the length direction of the box body <NUM>, the filter <NUM> is close to the air inlet end of the first air duct <NUM>, and the reactor <NUM> is close to the air outlet end of the first air duct <NUM>.

In some embodiments, the electronic control box further includes an expansion board <NUM> and an electric control module assembly <NUM>. Each of the expansion board <NUM> and the electric control module assembly <NUM> may be a circuit plate. The expansion board <NUM> and the electric control module assembly <NUM> are located in the box body <NUM>. Two electric control module assemblies <NUM> may be provided, and the extension plate <NUM> and the electric control module assembly <NUM> are arranged at intervals in the extension direction of the air duct partition plate <NUM>. The extension plate <NUM> and the electric control module assembly <NUM> are located outside the cooling air duct <NUM>. An arrangement direction of the expansion board <NUM> and the electric control module assembly <NUM> is parallel to the length direction of the box body <NUM> illustrated in <FIG>. The expansion board <NUM> is opposite to the filter <NUM>. The electric control module assembly <NUM> is opposite to the reactor <NUM>.

In the width direction of the box body <NUM>, the filter <NUM> protrudes towards the extension plate <NUM> relative to the reactor <NUM>, and the electric control module assembly <NUM> protrudes towards the reactor <NUM> relative to the expansion board <NUM>. In this case, the first plate body <NUM>, the second plate body <NUM>, and the third plate body <NUM> surround an end of the filter <NUM> close to the expansion board <NUM>.

The first fan <NUM> may be one of a centrifugal fan, an axial flow fan, and a cross-flow fan. In an embodiment illustrated in <FIG>, the first fan <NUM> may be an axial fan. It can be understood that, for those skilled in the art, replacing the first fan <NUM> with a centrifugal fan or a cross-flow fan is a routine substitution. The first fan <NUM> may be arranged at the mounting plate <NUM> through at least one of threading, welding, and snapping.

The first fan <NUM> is fixed to the mounting plate <NUM> through the threading. The inlet of the first fan <NUM> is in communication with the first air return inlet <NUM> of the mounting plate <NUM>. The first fan <NUM> is arranged at the air inlet end of the first air duck <NUM>. The first fan <NUM> sucks the air in the second chamber <NUM> into the first chamber <NUM> to form the first heat dissipation airflow in the first chamber <NUM>. The outlet of the first fan <NUM> is in communication with the air inlet end of the cooling air duct <NUM>.

The second fan <NUM> is arranged at the mounting plate <NUM> and located in the first chamber <NUM>. The second fan <NUM> may be one of a centrifugal fan, an axial flow fan, and a cross-flow fan.

In some embodiments, the second fan <NUM> is arranged in the cooling air duct <NUM>, the air outlet direction of the second fan <NUM> is the same as a direction of the first heat dissipation airflow. The first fan <NUM> has an air outlet direction from left to right, and the second fan <NUM> has an air outlet direction from top to bottom.

<FIG> is a schematic exploded view of an electric control box after a box cover is removed according to an embodiment of the present disclosure, <FIG> is a schematic structural view of an electric control module assembly of an electric control box according to an embodiment of the present disclosure, and <FIG> is a schematic structural view of a heat dissipation plate according to an embodiment of the present disclosure.

Referring to <FIG>, in some embodiments, the electric control box according to the present disclosure includes a box body <NUM> having a closed accommodation cavity <NUM>, a heat dissipation assembly, and an electric control module assembly <NUM>. The box body <NUM> is configured to accommodate the heat dissipation assembly and the electric control module assembly <NUM>. The heat dissipation assembly is configured for heat dissipation. The electric control module assembly <NUM> is configured to control an operation state of a fan and a compressor of the air conditioner outdoor unit.

Schematically, the box body <NUM> is a rectangular-shaped box body, and may include a bottom plate <NUM>, a box cover <NUM>, a front side plate <NUM>, a rear side plate <NUM>, a left side plate <NUM>, and a right side plate <NUM>. With reference to <FIG>, both the left side plate <NUM> and the right side plate <NUM> extend in a Y direction, and the left side plate <NUM> is spaced apart from the right side plate <NUM> in an X direction; and the rear side plate <NUM> is located at a rear end of the left side plate <NUM> and the right side plate <NUM> to form a half-shell structure with an opening at a front end and a top end. In some embodiments, the rear side plate <NUM>, the left side plate <NUM>, and the right side plate <NUM> and the bottom plate <NUM> may be integrally formed by using processes such as molding or stamping.

The front side plate <NUM> may be fixed to the front side of the bottom plate <NUM> by bolts, buckles, etc. Both the front side plate <NUM> and the rear side plate <NUM> extend in the X direction, and the front side plate <NUM> is spaced apart from the rear side plate <NUM> in the Y direction.

The box cover <NUM> is opposite to the bottom plate <NUM>. The box cover <NUM> may also be fixed to the top end of each of the front side plate <NUM>, the rear side plate <NUM>, the left side plate <NUM>, and the right side plate <NUM> by the bolts, the buckles, etc..

It should be noted that the closed accommodation cavity <NUM> in the box body <NUM> can not only facilitate protection of the electrical device in the box body <NUM>, and can also prevent external heat from affecting the heat dissipation of the electrical device. For example, during fitting, the bottom plate <NUM>, the box cover <NUM>, the front side plate <NUM>, the rear side plate <NUM>, the left side plate <NUM>, and the right side plate <NUM> that are described above may be connected in a sealed manner through a sealant and a sealing ring to form a closed accommodation cavity <NUM> in the box body <NUM>. The electric control box of the embodiments of the present disclosure may be, for example, a closed electric control box. In this way, damage to the electronic component in the electric control box caused by other foreign matters such as water drops and dust entering the electric control box can be avoided to achieve an effect of waterproof, dust prevention and anti-corrosion.

The shape of box body <NUM> is limited to the rectangular shape described above, and may also be other shapes. For example, the box body <NUM> may also be a cylindrical-shaped box body or a special-shaped box body, etc. In addition, when the electric control box is fitted in a housing of the air conditioner outdoor unit, any suitable surface can be selected to be fixed. For example, the rear side plate <NUM> of the electric control box may be mounted to the housing of the outdoor unit, or the bottom plate <NUM> of the electric control box may also be fixed to the housing.

The heat dissipation assembly serves as a component for dissipating heat in the electric control box outside the electric control box and includes the heat exchanger <NUM> and a heat dissipation plate <NUM>. The heat dissipation plate <NUM> has a first surface <NUM> and a second surface <NUM> opposite to the first surface <NUM>. The at least one electric control module assembly <NUM> is mounted at the first surface <NUM>, and the first surface <NUM> is in contact with the at least one electric control module assembly <NUM>. The heat exchanger <NUM> is mounted at the second surface <NUM>. The heat exchanger <NUM> may be welded to the heat dissipation plate. The heat exchanger <NUM> may be, but is not limited to, a microchannel heat exchanger. Therefore, heat of the electric control module assembly <NUM> may be transferred to the heat exchanger <NUM> through the heat dissipation plate <NUM>.

For example, the heat dissipation plate <NUM> includes a body plate <NUM> and a boss <NUM> arranged at the body plate <NUM>. The boss <NUM> is connected to the electric control module assembly <NUM>. A surface of the body plate <NUM> facing away from the boss <NUM> is welded to the heat exchanger <NUM>. By providing the boss <NUM>, it is ensured that the heat dissipation plate <NUM> is in contact with the electric control module assembly <NUM> for heat dissipation.

The heat exchanger <NUM> of this embodiment includes a refrigerant entry pipe <NUM>, a communication refrigerant output pipe <NUM>, and a plurality of refrigerant heat exchange portions <NUM> arranged at intervals in the Y direction. The refrigerant heat exchange portion <NUM> is configured to circulate a heat exchange medium. The refrigerant heat exchange portion <NUM> may be a circular-shaped pipe, a square-shaped pipe, etc. The refrigerant heat exchange portion <NUM> of this embodiment may be a flat pipe, the flat pipe has a cross section that may be, but is not limited to, a rectangle, a circle, an ellipse, a trapezoid, etc. In this way, the refrigerant heat exchange portion <NUM> has a first surface and a second surface opposite to the first surface. Therefore, a large heat exchange area can be provided. Thus, the heat exchange efficiency is improved.

The refrigerant heat exchange portion <NUM> has a first end in communication with the refrigerant entry pipe <NUM> and a second end in communication with the refrigerant output pipe <NUM>. Therefore, the heat exchange medium enters the refrigerant heat exchange portion <NUM> from the refrigerant entry pipe <NUM> and is then discharged through the refrigerant output pipe <NUM>.

The refrigerant entry pipe <NUM> and the refrigerant output pipe <NUM> extend in a direction (corresponding to the Y direction in the figure) perpendicular to a length direction of the refrigerant heat exchange portion <NUM>. Therefore, the refrigerant entry pipe <NUM> and the refrigerant output pipe <NUM> may be in communication with all the refrigerant heat exchange portions <NUM>. For example, two refrigerant entry pipes <NUM> are provided, and two refrigerant output pipes <NUM> are provided. Therefore, a flow rate of the heat exchange medium can be improved. Thus, the heat dissipation effect can be improved. The number of the refrigerant entry pipes <NUM> and the number of the refrigerant output pipes <NUM> are not limited thereto.

The heat exchanger <NUM> in the embodiments of the present invention is a microchannel heat exchanger. The microchannel heat exchanger includes at least two groups of microchannels. The at least two groups of microchannels include a plurality of first microchannels through which a first refrigerant flow flows and a plurality of second microchannels through which a second refrigerant flow flows. The second refrigerant flow absorbs heat from the first refrigerant flow to subcool the first refrigerant flow, or the first refrigerant flow absorbs heat from the second refrigerant flow to subcool the second refrigerant flow.

According to the heat dissipation assembly of this embodiment, the heat exchanger <NUM> is provided to circulate the heat exchange medium, and the heat exchange medium exchanges heat with the air to reduce an air temperature in the box body <NUM>. Moreover, the heat dissipation plate <NUM> is provided to be fixed and in contact with the electric control module assembly <NUM>, and therefore the heat of the electric control module assembly <NUM> is conducted out to reduce the temperature of the electric control module assembly <NUM>.

In addition, the second surface <NUM> of the heat dissipation plate <NUM> may be welded to the heat exchanger <NUM> to strengthen the heat exchanger <NUM>, preventing the refrigerant heat exchange portion <NUM> from being bent out of shape or the plurality of refrigerant heat exchange portions <NUM> from overlapping together after displacement, and ensuring that the heat exchange medium in the refrigerant heat exchange portion <NUM> can smoothly flow and has a maximum heat exchange area. When the first fan <NUM> subsequently drives the air in the box body <NUM> to circulate, the air may pass through a spacing between the two adjacent refrigerant heat exchange portions <NUM> and is in full contact with a surface of the refrigerant heat exchange portion <NUM>, in which the heat exchange medium circulates, for heat exchange. In this way, the heat exchange efficiency is improved. Therefore, the heat dissipation effect is improved.

In this embodiment, the heat exchanger <NUM> and the electric control module assembly <NUM> are mounted at two surfaces of the heat dissipation plate <NUM>, respectively. The heat can be transferred to the heat exchanger <NUM> through the heat dissipation plate <NUM> and dissipated to the outer side of the box body <NUM> through the heat exchanger <NUM>. Therefore, the heat in the electric control box is reduced.

The electric control module assembly <NUM> of this embodiment includes a plate body <NUM>, a fan module <NUM>, and a compressor module <NUM>. A spacing is formed between the fan module <NUM> and the compressor module <NUM>, and fan module <NUM> and the compressor module <NUM> are both arranged at the plate body <NUM>. The fan module <NUM> is configured to control a fan of the air conditioner outdoor unit, and the compressor module <NUM> is configured to control a compressor of the air conditioner outdoor unit. Therefore, the fan module <NUM> and the compressor module <NUM> generate a large amount of heat. The electric control module assembly <NUM> may further include electrical components such as a capacitor and a resistor that are arranged at the plate body <NUM>.

The fan module <NUM> and the compressor module <NUM> are both in contact with and connected to the first surface <NUM> of the heat dissipation plate <NUM>. The fan module <NUM> is screwed and fixed to the heat dissipation plate <NUM>, and the connection mode is simple and reliable. A thermally conductive adhesive layer is provided between the fan module <NUM> and the heat dissipation plate <NUM> to improve heat conduction efficiency. The compressor module <NUM> is screwed and fixed to the heat dissipation plate <NUM>, and the connection mode is simple and reliable. A thermally conductive adhesive layer is provided between the compressor module <NUM> and the heat dissipation plate <NUM> to improve the heat conduction efficiency.

One heat dissipation plate <NUM> may be provided, and the fan module <NUM> and the compressor module <NUM> may be fixed to one heat dissipation plate <NUM> simultaneously. A plurality of heat dissipation plates <NUM> may be provided and arranged side by side at the heat exchanger <NUM>. In this case, the fan module <NUM> and the compressor module <NUM> may be fixed to the same heat dissipation plate <NUM>, or may be fixed to different heat dissipation plates <NUM>, respectively.

The electric control box of this embodiment further includes a first fan <NUM> and a reactor <NUM>. The first fan <NUM> is configured to drive air to flow, and the reactor <NUM> is configured for current limiting and filtering. Therefore, the air conditioner outdoor unit operates more stably. The first fan <NUM> and the reactor <NUM> are both mounted in the closed accommodation cavity <NUM>. For example, the first fan <NUM> may be mounted at a side wall of the closed accommodation cavity <NUM>, and may also be mounted at a mounting structure in the closed accommodation cavity <NUM>.

The reactor <NUM> may be mounted at a side wall of the closed accommodation cavity <NUM>, and the reactor <NUM> may also be mounted at a mounting structure in the closed accommodation cavity <NUM>. A spacing is formed between the reactor <NUM> and the electric control module assembly <NUM>, and the reactor <NUM> is opposite to the air outlet of the first fan <NUM>. Therefore, heat generated by the reactor <NUM> can be carried away by the air under the action of the first fan <NUM>. Thus, cooling is achieved.

The electric control box of this embodiment further includes a mounting plate <NUM> configured for a mounting of an electrical device, etc. The mounting plate <NUM> is fixed in the box body <NUM>, for example, the mounting plate <NUM> is fixed in the box body <NUM> through threading and snapping. The mounting plate <NUM> has a first mounting surface and a second mounting surface opposite to the first mounting surface. The first mounting surface faces towards the bottom plate <NUM>, and the second mounting surface faces towards the box cover <NUM>. The mounting plate <NUM> may be a rectangular-shaped plate, which is arranged parallel to the bottom plate <NUM> and the box cover <NUM> of the box body <NUM>. With reference to <FIG> and <FIG>, the mounting plate <NUM> divides the closed accommodation cavity <NUM> into a first chamber <NUM> and a second chamber <NUM>. The first mounting surface is located in the first chamber <NUM>, and the second mounting surface is located in the second chamber <NUM>.

The heat dissipation assembly is located in the first chamber <NUM> and configured to conduct the heat out of the box body <NUM>. The first surface <NUM> of the heat dissipation plate <NUM> of the heat dissipation assembly is fixedly connected to the mounting plate <NUM>. The heat dissipation plate <NUM> may be mounted at the first mounting surface through sapping, threading, etc. For example, the heat dissipation plate <NUM> is connected to the mounting plate <NUM> by screws, and the connection mode is stable and reliable. A thermally conductive adhesive layer may also be provided between the first surface <NUM> of the heat dissipation plate <NUM> and the first mounting surface to improve the heat transfer efficiency.

The reactor <NUM> is located in the second chamber <NUM> and fixedly connected to a side wall of the second chamber <NUM>. For example, the reactor <NUM> may be mounted at a side plate of the box body <NUM> forming the second chamber <NUM>, and may also be mounted at the mounting plate <NUM>. The reactor <NUM> of this embodiment is mounted at the second mounting surface, and the reactor <NUM> may be mounted at the second mounting surface through snapping, screwing, etc..

When the heat dissipation plate <NUM> is mounted at the first mounting surface and the reactor <NUM> is mounted at the second mounting surface, heat generated by the reactor <NUM> may be transferred to the heat dissipation plate <NUM> through the mounting plate <NUM> and dissipated to the outer side of the box body <NUM> through the heat exchanger <NUM> to reduce heat in the electric control box.

In some embodiments, the reactor <NUM> is mounted at the mounting plate <NUM>. In this case, the reactor <NUM> may perform air cooling under the action of the first fan <NUM>.

In some other embodiments, the reactor <NUM> is mounted at the heat dissipation plate <NUM>. In this case, the reactor <NUM> may perform air cooling under the action of the first fan <NUM>, and heat of the reactor <NUM> is transferred to the heat exchanger <NUM> through the heat dissipation plate <NUM>, and dissipated by exchanging heat with the heat exchange medium in the heat exchanger <NUM>.

The above two heat dissipation modes are specifically described below. One is that a fan is provided to exchange air between the first chamber <NUM> and the second chamber <NUM> for air-cooling heat dissipation. The other is that a mounting opening <NUM> is formed at the mounting plate <NUM>, and therefore the reactor <NUM> is in direct contact with the heat dissipation plate <NUM> for the heat dissipation, and the air-cooling heat dissipation and heat exchanger refrigerant heat dissipation are simultaneously performed.

In order to achieve airflow between the first chamber <NUM> and the second chamber <NUM>, the mounting plate <NUM> is partially configured as an air inlet grille <NUM>. For example, a front side of the mounting plate <NUM> is configured as the air inlet grille <NUM> extending in the X direction, and therefore the air in the second chamber <NUM> can easily enter the first chamber <NUM> at various positions in a long side direction (corresponding to the X direction in the figure) of the mounting plate <NUM> for heat dissipation. Thus, higher local heat caused by discharge obstruction of local air is avoided.

The first fan <NUM> can improve a flow speed of the air in the first chamber <NUM> and the second chamber <NUM>. Under the action of the first fan <NUM>, the air in the second chamber <NUM> is blown to the heat dissipation assembly in the first chamber <NUM> for heat exchange, and the air after the heat exchange is blown back to the second chamber <NUM>, and therefore the flow and heat exchange of the air are realized inside the box body <NUM>. In this way, cleanliness of the air inside the box body <NUM> is ensured.

A first predetermined spacing is formed between the first fan <NUM> and the air inlet grille <NUM>, which is beneficial to prolonging a flow path of the air and improving the heat dissipation effect. The first fan <NUM> has an air inlet extending into the first chamber <NUM> and air outlet extending into the second chamber <NUM>. Therefore, under the action of the first fan <NUM>, air with a lower temperature in the first chamber <NUM> enters an inner side of the first fan <NUM> through the air inlet and then is discharged into the second chamber <NUM> through the air outlet. The air carries the heat in the second chamber <NUM> and returns to the first chamber <NUM> through the air inlet grille <NUM>. After exchanging heat with the heat dissipation assembly, the temperature of the air decreases. This cycle is repeated to reduce the temperature of the electrical devices in the first chamber <NUM>.

The air inlet of the first fan <NUM> extends into the first chamber <NUM> and is brought into communication with the first chamber <NUM>. This is not limiting. For example, the mounting plate <NUM> has a through hole. The air inlet of the first fan <NUM> is directly opposite to the through hole and is brought into communication with the first chamber <NUM>. The air outlet of the first fan <NUM> extends into the second chamber <NUM> and is brought into communication with the second chamber <NUM>. When the first fan <NUM> may be mounted at the second mounting surface, the air outlet of the first fan <NUM> is located in the second chamber <NUM>.

In this embodiment, electrical devices such as the first fan <NUM> and the reactor <NUM> are mounted at the second mounting surface of the mounting plate <NUM>, and therefore transmission of signals and power supply are facilitated. For example, the first fan <NUM> includes a housing and a fan mounted in the housing, and the housing is fixed to the second mounting surface through screwing, snapping, etc. The housing has an air inlet and an air outlet. The air inlet is directly opposite to the through hole formed at the mounting plate <NUM> and is brought into communication with the first chamber <NUM>. The air outlet is located in the second chamber <NUM>.

In this embodiment, an air duct is formed between the air outlet of the first fan <NUM> and the air inlet grille <NUM>, and the reactor <NUM> is mounted in the air duct. Therefore, the reactor <NUM> is located at a side of the air outlet of the first fan <NUM>, and cold air blown out by the first fan <NUM> can be quickly in contact with the reactor <NUM> to carry away the heat generated by the reactor <NUM>. In this way, the heat dissipation effect of the reactor <NUM> is improved.

In some possible embodiments, the air duct partition plate <NUM> is mounted to the mounting plate <NUM>, and the air duct is defined and formed by the air duct partition plate <NUM>, the mounting plate <NUM>, and the box body <NUM>. The air duct partition plate <NUM> may be fixed to the mounting plate <NUM> through snapping, bonding, screwing, etc..

The electronic control box of this embodiment may further include a mainboard <NUM>, a power board <NUM>, a filter <NUM>, and an expansion board <NUM>. Data signals of circuits and sensors are transmitted to the mainboard <NUM>. The power board <NUM> is configured to distribute electrical energy to each electrical component. The filter <NUM> is configured to filter harmonics to ensure stability of the operation of the electrical device. The extension board <NUM> is configured to be connected to a device extended by a user. The electrical components in the electronic control box are not limited thereto.

The power board <NUM>, the first fan <NUM>, the filter <NUM>, and the reactor <NUM> are arranged at intervals at a top end of the mounting plate <NUM> in the X direction to form a first group of electrical devices. The mainboard <NUM>, the expansion board <NUM>, and the electric control module assembly <NUM> are arranged at intervals at the mounting plate <NUM> in the X direction to form a second group of electrical devices. The first group of electrical devices, the second group of electrical devices, and the air inlet grille <NUM> are arranged side by side in the Y direction, and the air duct partition plate <NUM> is provided between the first group of electrical devices and the second group of electrical devices.

Through the above arrangement, the airflow exhausted from the air outlet of the first fan <NUM> enters the air inlet grille <NUM> sequentially through the filter <NUM> and the reactor <NUM> along the air duct, and the air located between the air duct partition plate <NUM> and the air inlet grille <NUM> is driven to flow and enter the first chamber <NUM> through the air inlet grille <NUM>. With this arrangement, it is possible to prevent the reactor <NUM> that generates a large amount of heat from transferring heat to other electrical components and affecting them. Thus, the heat dissipation effect is improved.

In order to allow the airflow exhausted from the first fan <NUM> to flow to the air inlet grille <NUM>, a spacing is formed between the electric control module assembly <NUM> and the right side plate <NUM> of the box body <NUM>, and therefore the air duck is generally L-shaped to prolong a flow distance of air and improve the heat dissipation effect. A flow speed of the air at a corner is affected. In order to improve the flow speed of the air in the air duct, the second fan <NUM> is further provided in the air duct. The second fan <NUM> is fixed to the second mounting surface of the mounting plate <NUM> to accelerate the air flow. For example, the second fan <NUM> is mounted between the electric control module assembly <NUM> and the right side plate <NUM> of the box body <NUM> to improve the flow speed of the air. Thus, the heat dissipation effect is improved.

According to the embodiment of the present invention, the specific structure of the air duct partition plate <NUM> is not limited, and the air duct partition plate <NUM> may be provided based on a size of the electrical device, installation layout of the electrical device, etc..

According to the electric control box of this embodiment, the mounting plate <NUM> is provided to separate the heat dissipation assembly and the reactor <NUM> into the first chamber <NUM> and the second chamber <NUM>, respectively; and the mounting plate <NUM> is partially configured as the air inlet grille <NUM>, the first fan <NUM> is mounted at the mounting plate <NUM>, the air inlet of the first fan <NUM> is in communication with the first chamber <NUM>, and the air outlet of the first fan <NUM> is in communication with the second chamber <NUM>. In this way, the first fan <NUM> can blow the air with a relatively low temperature in the first chamber <NUM> into the second chamber <NUM>, and the air carries the heat generated by the reactor <NUM> and returns to the first chamber <NUM> through the air inlet grille <NUM> and exchanges the heat with the heat dissipation assembly to discharge the heat out of the electronic control box. This cycle is repeated to achieve the purpose of reducing the temperature in the electric control box. Moreover, the first fan <NUM> drives the air to flow, the heat generated by the reactor <NUM> and the heat generated by other electrical devices can be taken away, which facilitates improving heat dissipation efficiency.

The electric control module assembly <NUM> is away from the air outlet of the first fan <NUM>, and when the air discharged from the air outlet of the first fan <NUM> flows to the electric control module assembly <NUM>, the heat generated by the electrical devices such as the reactor <NUM> has been carried by the air. In order to improve the heat dissipation effect of the electric control module assembly <NUM>, in conjunction with <FIG> and <FIG>, in this embodiment, at least one mounting opening <NUM> is further provided at the mounting plate <NUM>. The at least one mounting opening <NUM> is located between the air inlet grille <NUM> and the first fan <NUM>. The at least one mounting opening <NUM> penetrates the mounting plate <NUM> in a thickness direction of the mounting plate <NUM> (in a Z direction in the figure). The at least one mounting opening <NUM> may be a circular-shaped opening, a polygonal-shaped opening, an irregular-shaped opening, etc., and the shape of the at least one mounting opening <NUM> is not limited in this embodiment.

In this case, the heat dissipation plate <NUM> is at least partially exposed at the mounting opening <NUM>. The heat dissipation plate <NUM> may have a shape and size consistent with the shape and size of the mounting opening <NUM>, that is, the heat dissipation plate <NUM> is completely exposed at the mounting opening <NUM>. In this embodiment, a part of the structure of the heat dissipation plate <NUM> is exposed at the mounting opening <NUM>, and another part of the structure of the heat dissipation plate <NUM> is attached to the first mounting surface and is fixedly connected to the first mounting surface by a screw.

The electric control module assembly <NUM> is fixedly connected to the heat dissipation plate <NUM> exposed at the mounting opening <NUM>. That is, the electric control module assembly <NUM> is in direct contact with the heat dissipation plate <NUM>, and the heat generated by the electric control module assembly <NUM> is directly transmitted to the heat exchanger <NUM> through the heat dissipation plate <NUM> for heat exchange. Therefore, the heat dissipation efficiency is high. For example, the electric control module assembly <NUM> is fixedly connected to the heat dissipation plate <NUM> by a screw, and a thermally conductive adhesive layer is provided between the electric control module assembly <NUM> and the heat dissipation plate <NUM>. In this way, the heat transfer efficiency is improved.

A plurality of electric control module assemblies <NUM> in this embodiment is provided and arranged at intervals in the length direction (corresponding to the X direction in the figure) of the mounting plate <NUM>. For example, two electric control module assemblies <NUM> are arranged at intervals in a length direction (corresponding to the X direction in the figure) of the mounting plate <NUM>.

The plurality of electronic control module assemblies <NUM> shares one mounting opening <NUM>. One heat dissipation plate <NUM> may be provided in the mounting opening <NUM>. That is, all electric control module assemblies <NUM> are fixed to the same heat dissipation plate <NUM>. In this case, a spacing is formed between two adjacent electric control module assemblies <NUM>, and therefore a part of the heat dissipation plate <NUM> is exposed at the mounting opening <NUM>. In this way, the airflow can flow through the heat dissipation plate <NUM>, which facilitates improving the heat dissipation efficiency.

Each of the plurality of electronic control module assemblies <NUM> corresponds to one mounting opening <NUM>, and in conjunction with <FIG> and <FIG>, the mounting plate <NUM> has two mounting openings <NUM>, each of the two electric control module assemblies <NUM> corresponds to one of the two mounting openings <NUM>. One heat dissipation plate <NUM> may be provided and partially exposed at the two mounting openings <NUM>. Two heat dissipation plates <NUM> may be provided, and each of the two heat dissipation plates <NUM> corresponds to one of the two mounting openings <NUM>.

With reference to <FIG>, the mounting plate <NUM> has two mounting openings <NUM> arranged side by side in the X direction, the heat dissipation assembly is provided with a heat dissipation plate <NUM>, and a structure of the heat dissipation plate <NUM> are partially exposed at the two mounting openings <NUM>. Two electronic control module assemblies <NUM> are provided, the electric control module assembly <NUM> at a left side is fixedly connected to the heat dissipation plate <NUM> exposed at the mounting opening <NUM> at a left side, and the electric control module assembly <NUM> at a right side is fixedly connected to the heat dissipation plate <NUM> exposed at the mounting opening <NUM> at a right side. In this way, the heat dissipation plate <NUM> can be easy to be fixedly connected to the mounting plate <NUM>, and a part of the mounting plate <NUM> between the two mounting openings <NUM> can also provide a space for wiring.

In some possible embodiments, the reactor <NUM> relies on the airflow for the heat dissipation, and the reactor <NUM> is separated from the heat dissipation plate <NUM> by the mounting plate <NUM>. Referring to <FIG> is a schematic structural view of an electric control box according to Embodiment <NUM> of the present disclosure without an air duct partition plate and an electric control module assembly. The reactor <NUM> is screwed and fixed to the second mounting surface. In this case, the heat generated by the reactor <NUM> may be transmitted to the heat dissipation assembly through the mounting plate <NUM>, or may also be transmitted to the heat dissipation assembly by the first fan <NUM> driving the air to flow.

In some other possible embodiments, the reactor <NUM> is in direct contact with the heat dissipation assembly to transfer heat for heat dissipation. In this case, the reactor <NUM> is fixedly connected to the heat dissipation plate <NUM> exposed at the mounting opening <NUM>. For example, the reactor <NUM> is connected to the heat dissipation plate <NUM> by threading, snapping, etc., and therefore the reactor <NUM> is in contact with the heat dissipation plate <NUM> for heat conduction. In order to improve the heat transfer efficiency, a thermally conductive adhesive layer is further provided between the reactor <NUM> and the heat dissipation plate <NUM> of this embodiment.

The reactor <NUM> of this embodiment includes a reactor body <NUM> and a fixing plate <NUM> connected to the reactor body <NUM>. A part of the fixing plate <NUM> is fixedly connected to the mounting plate <NUM>, and another part of the fixing plate <NUM> is fixedly connected to the heat dissipation plate <NUM>. The fixing plate <NUM> may be fixed to the mounting plate <NUM> through screwing, snapping, etc. The fixing plate <NUM> may be fixed to the heat dissipation plate <NUM> through the screwing, the snapping, etc. The reactor <NUM> of this embodiment is fixedly connected to the mounting plate <NUM> and the heat dissipation plate <NUM> at the same time, which facilitates improving stability and reliability of a mounting of the reactor <NUM>.

When the reactor <NUM> is fixedly connected to the heat dissipation plate <NUM>, the fixing plate <NUM> of the reactor <NUM> covers a part of the mounting opening <NUM> to allow the heat dissipation plate <NUM> in another part of the mounting opening <NUM> to be exposed at the first chamber <NUM>. In this way, the air in the first chamber <NUM> can flow through the heat dissipation plate <NUM> to allow for contact heat exchange, which facilitates improving the heat dissipation effect.

The reactor <NUM> and the electric control module assembly <NUM> share one mounting opening <NUM>. In this way, a mounting opening <NUM> is processed at the mounting plate <NUM> with no need to process a plurality of mounting openings <NUM>, which facilitates improving convenience of processing.

The reactor <NUM> and the electric control module assembly <NUM> each correspond to one mounting opening <NUM>. In this case, a plurality of mounting openings <NUM> is provided. The reactor <NUM> and the electric control module assembly <NUM> each correspond to one mounting opening <NUM>, which can avoid mutual influence of the heat generated by the reactor <NUM> and the heat generated by the electric control module assembly <NUM>.

A plurality of reactors <NUM> may be provided in this embodiment. The plurality of reactors <NUM> is mounted in the air duct side by side in an airflow direction and arranged side by side in the X direction at the outlet side of the first fan <NUM>. In this embodiment, two reactors <NUM> be provided, and the two reactors <NUM> is spaced apart from the first fan in the X direction.

The plurality of reactors <NUM> shares one of the at least one mounting opening <NUM>. In this way, the number of openings processed at the mounting plate <NUM> can be reduced, which improves processing efficiency. Each of the plurality of reactors <NUM> corresponds to one of the at least one mounting opening <NUM>, and therefore heat dissipation between the plurality of reactors <NUM> can be avoided.

For example, the mounting plate <NUM> has two mounting openings <NUM> that are spaced apart from each other in the X direction, one heat dissipation plate <NUM> is provided, a part of a structure of the heat dissipation plate <NUM> is exposed at the mounting opening <NUM> at a left side, and another part of the structure of the heat dissipation plate <NUM> is exposed at the mounting opening <NUM> at a right side. The electric control box is internally provided with two reactors <NUM> and two electric control module assemblies <NUM>. A reactor <NUM> at the left side and an electric control module assembly <NUM> at the left side share the mounting opening <NUM> at the left side, and a reactor <NUM> at the right side and an electric control module assembly <NUM> at the right side share the mounting opening <NUM> at the right side.

An air conditioner outdoor unit provided by the embodiments of the present invention includes the electric control box provided by the present invention and the casing <NUM>. The electric control box is located inside the casing <NUM> as illustrated in <FIG>.

The air conditioner outdoor unit provided in the embodiments of the present invention may be an outdoor unit of a central air conditioner. The electric control box is arranged inside a casing of the outdoor unit of the central air conditioner. The condenser in communication with the heat exchanger <NUM> in the electric control box may be a heat exchanger in the outdoor unit of the central air conditioner.

The outdoor unit of the central air conditioner is internally provided with two compressors and an outdoor fan. Each electric control module assembly in the electric control box is configured to be connected to and control a corresponding compressor. Each electric control module assembly in the electric control box is also configured to be connected to and control a corresponding outdoor fan.

Since the air conditioner outdoor unit of the embodiments of the present invention adopts the above-mentioned technical solutions of the electric control box, at least all the beneficial effects brought by the technical solutions of the electric control box are achieved, and details thereof are not repeated herein.

An air conditioner provided in the embodiments of the present invention includes the above-mentioned air conditioner outdoor unit provided in the embodiments of the present invention.

The air conditioner according to the embodiments of the present invention may be a central air conditioner. The central air conditioner includes an outdoor unit of the central air conditioner mounted outdoors and an indoor unit of the central air conditioner mounted indoors. The indoor unit of the central air conditioner and the outdoor unit of the central air conditioner cooperate with each other to achieve functions of refrigeration, heating, dehumidification, etc., of the air conditioner. In the central air conditioner, one outdoor unit of the central air conditioner is provided, and two or more indoor units of the central air conditioner are provided.

The indoor unit of the central air conditioner is usually provided with an indoor heat exchanger, and the outdoor unit of the central air conditioner is usually provided with an outdoor heat exchanger. The indoor heat exchanger is usually in communication with the outdoor heat exchanger via a refrigerant pipeline to allow a refrigerant between the indoor heat exchanger and the outdoor heat exchanger to circulate. In a refrigeration process of the central air conditioner, the indoor heat exchanger is an evaporator, and a refrigerant in the evaporator absorbs heat from liquid to be gaseous. In an evaporation and heat absorption process of the refrigerant, the evaporator exchanges heat with air flowing through the evaporator to take away heat in the air in the indoor unit of the central air conditioner, and therefore air exhausted out of the indoor unit of the central air conditioner is air after heat release and cooling. In this case, the indoor unit of the central air conditioner blows cold air. Meanwhile, the outdoor heat exchanger is a condenser, and a refrigerant in the condenser changes from a gaseous state to a liquid state. In a condensation and heat release process of the refrigerant, the condenser exchanges heat with air in the outdoor unit of the central air conditioner flowing through the condenser, and therefore the air in the outdoor unit of the central air conditioner takes away heat of the condenser to an outer side of the outdoor unit of the central air conditioner. In this way, the refrigeration process is realized.

In a heating process of the central air conditioner, the outdoor heat exchanger is an evaporator, and a refrigerant in the evaporator absorbs heat and changes from a liquid state to a gaseous state. In a evaporation and heat absorption process of the refrigerant, the evaporator exchanges heat with the air flowing through the evaporator, and heat carried in the air in the outdoor unit of the central air conditioner is exchanged into the refrigerant in the evaporator. Meanwhile, the indoor heat exchanger is a condenser, and a refrigerant in the condenser is changes from a gaseous state to a liquid state. In a condensation and heat release process of the refrigerant, the condenser exchanges heat with air in the indoor unit of the central air conditioner flowing through the condenser, and therefore the air in the indoor unit of the central air conditioner takes away heat carried by the condenser and is exhausted into a room outside the indoor unit of the central air conditioner from the indoor unit of the central air conditioner. In this case, the indoor unit of the central air conditioner blows hot air. In this way, the heating process is realized.

The electric control box is mounted in an outdoor unit of the central air conditioner. For example, the electric control box may be configured to control an operating process of a compressor in the outdoor unit of the central air conditioner, and the heat exchanger <NUM> in the electric control box may be in communication with the outdoor heat exchanger.

Since the air conditioner of the embodiments of the present invention adopts the above-mentioned technical solutions of the electronic control box, at least all the beneficial effects brought by the above-mentioned technical solutions of the electronic control box are achieved, and details thereof are not repeated herein.

In the description of the present invention, it is to be understood that, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "over", "below", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "in", "out", "clockwise", "anti-clockwise", "axial", "radial" and "circumference" refer to the directions and location relations which are the directions and location relations shown in the drawings, and for describing the present disclosure and for describing in simple, and which are not intended to indicate or imply that the device or the elements are disposed to locate at the specific directions or are structured and performed in the specific directions, which could not to be understood to the limitation of the present disclosure.

In addition, terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or implicitly indicating the quantity of technical features indicated. Furthermore, the feature defined with "first" and "second" may comprise one or more this feature distinctly or implicitly. In the description of the present invention, "a plurality of" means two or more than two, unless specified otherwise.

In the present invention, unless specified or limited otherwise, the terms "mounted," "connected," "coupled" and "fixed" are understood broadly, such as fixed, detachable mountings, connections and couplings or integrated, and can be mechanical or electrical mountings, connections and couplings, and also can be direct and via media indirect mountings, connections, and couplings, and further can be inner mountings, connections and couplings of two components or interaction relations between two components, which can be understood by those skilled in the art according to the detail embodiment of the present disclosure.

In the present invention, unless specified or limited otherwise, the first characteristic is "on" or "under" the second characteristic refers to the first characteristic and the second characteristic can be direct or via media indirect mountings, connections, and couplings. And, the first characteristic is "on", "above", "over" the second characteristic may refer to the first characteristic is right over the second characteristic or is diagonal above the second characteristic, or just refer to the horizontal height of the first characteristic is higher than the horizontal height of the second characteristic. The first characteristic is "below" or "under" the second characteristic may refer to the first characteristic is right over the second characteristic or is diagonal under the second characteristic, or just refer to the horizontal height of the first characteristic is lower than the horizontal height of the second characteristic.

In the description of the present invention, reference throughout this specification to "an embodiment," "some embodiments," "an example," "a specific example," or "some examples," means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of the phrases in various places throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Without a contradiction, the different embodiments or examples and the features of the different embodiments or examples can be combined by those skilled in the art.

Claim 1:
An electric control box for an outdoor unit of an air conditioner, comprising:
a box body (<NUM>, <NUM>); and
a mounting plate (<NUM>) arranged in the box body (<NUM>, <NUM>), the mounting plate (<NUM>) being provided with a first fan (<NUM>) and a plurality of electronic components (<NUM>) at a mounting side of the mounting plate (<NUM>), wherein:
the first fan (<NUM>) is configured to form first heat dissipation airflow flowing along a first heat dissipation path, wherein the first heat dissipation airflow being diverted by an inner wall of the box body (<NUM>, <NUM>) to form second heat dissipation airflow flowing along a second heat dissipation path;
the plurality of electronic components (<NUM>) are distributed over the first heat dissipation path and the second heat dissipation path, the first heat dissipation path and the second heat dissipation path being located at the mounting side of the mounting plate (<NUM>); and
further comprising a heat exchanger (<NUM>), the heat exchanger being a microchannel heat exchanger comprising at least two groups of microchannels, the at least two groups of microchannels including a plurality of first microchannels configured to allow a first refrigerant flow to flow through and a plurality of second microchannels configured to allow a second refrigerant flow to flow through, such that the second refrigerant flow is configured to absorb heat from the first refrigerant flow to subcool the first refrigerant flow, or the first refrigerant flow is configured to absorb heat from the second refrigerant flow to subcool the second refrigerant flow.