Patent Description:
With the improvement of living conditions, people are having higher and higher requirements for household environment. A brief and fashionable kitchen appliance decoration concept and intelligent home appeal to people. A refrigerator, as an indispensable kitchen electrical appliance, has a certain volume, and protrudes outwards from the wall when placed in the kitchen or the living room, which does not facilitate reasonable arrangement of the space and pleasant appearance. In view of this, to achieve an integral kitchen electrical appliance decoration style, the refrigerator is usually embedded in the cupboard to make it look like a part of the kitchen or living room.

However, when a conventional refrigerator is mounted, a space of over <NUM> should be reserved around the refrigerator including a rear wall to ensure ventilation and heat dissipation of the compressor compartment, thereby reducing the energy consumption of the refrigerator. Since there is an enough space between the surrounding of the refrigerator and the wall or other articles, the air inlet and air outlet on the back plate of the compressor compartment in the lower rear portion of the refrigerator do not affect each other. When the refrigerator is embedded into the cupboard, the distance between the surrounding of the refrigerator and the cupboard is short, even the rear wall of the refrigerator abuts against the cupboard wall, and the distance between side walls of the refrigerator and the cupboard wall is shorter than <NUM> to reasonably save the space. As such, hot air discharged from an air outlet on a back plate of a compressor compartment in a lower rear portion of the refrigerator is apt to blend with cold air and flow again through an air inlet into the compressor compartment, thereby causing the temperature of air in the compressor compartment to rise, causing the energy consumption of the refrigerator to increase and the performance of the condenser and the compressor to fall, and even causing safety problems such as reduction of the reliability of the compressor due to undesirable heat dissipation of the compressor compartment.

<CIT> discloses a refrigerator according to the preamble of claim <NUM>. <CIT> and <CIT> disclose other examples of prior art refrigerators.

An object of the present invention is to provide a refrigerator to address problem such as the increase of the energy consumption of the refrigerator and reduction of the performance of the condenser and compressor caused by the hot air discharged from the compressor compartment blending with cold air and re-entering the compressor compartment, when the refrigerator is embedded into a cupboard.

To achieve one of the above objects, the present invention employs a refrigerator according to claim <NUM>.

The refrigerator comprising a compressor compartment disposed in a lower rear portion thereof, the compressor compartment comprising an internal space, a heat dissipation blower disposed in the internal space, a back plate disposed in the rear of the internal space, and a bottom plate disposed below the internal space, wherein the back plate has a first air vent and a second air vent which are disposed side by side in a left-right direction, the first air vent and the second air vent are respectively communicated with a rear space of the refrigerator, the bottom plate is provided with a third air vent communicated with a lower space of the refrigerator, the internal space has a first air path and a second air path, the first air path begins with the second air vent and communicates with the third air vent via the heat dissipation blower, the refrigerator further comprises a baffle, the baffle is movably disposed at the first air vent, and the baffle has a first position for opening the first air vent and a second position for closing the first air vent.

In futher, the refrigerator further comprises a driving mechanism which drives the baffle to move between the first position and the second position.

In futher, the refrigerator further comprises a pair of side walls arranged opposite to each other in the left-right direction, the driving mechanism is set as a pull rod, the push rod moves in the left-right direction relative to the baffle to push the baffle to move from the first position to the second position, the push rod has a first end and a second end which are opposed to each other in the left-right direction, and the first end is connected to the baffle; when the baffle is at the first position, the second end protrudes out of the side wall in the left-right direction.

In futher, an end face of the second end is set as an arcuate surface or an inclined surface gradually away from the side wall from rear to forward.

In futher, the refrigerator further comprises an elastic member connecting the back plate with the push rod, and the elastic member, through the push rod, drives the baffle to move to return from the second position to the first direction.

In futher, the back plate is further provided with a guide rail extending in the left-right direction, the elastic member is a spring sleeved on an outer circumference of the push rod, the push rod and the spring are disposed in the guide rail, a limiting portion is disposed on an inner wall of the guide rail, the push rod is provided with a flange, an end of the spring adjacent the first air vent resists the limiting portion, the other end of the spring away from the first air vent resists the flange, and the push rod compresses the spring and pushes the baffle to move from the first position to the second position.

In futher, the driving mechanism comprises an electromagnet and a flux guide, one of the electromagnet and the flux guide is disposed on the back plate, the other of the electromagnet and the flux guide is disposed on the baffle, and the electromagnet, after being energized, is fitted with the flux guide to drive the baffle to move from the first position to the second position.

In futher, the refrigerator comprises an elastic return member which drives the baffle to move to return from the second position to the first position.

In futher, the refrigerator further comprises a control system and a sensor, the sensor detects position information of the refrigerator and an obstacle, the control system is connected with the sensor, and the control system is configured to control the driving mechanism to be energized and turned on according to the position information, so that the driving mechanism drives the baffle to move from the first position to the second position.

In futher, the refrigerator further comprises a pair of side walls arranged opposite to each other in the left-right direction, and the sensor is a distance sensor disposed on the side wall.

In futher, a limiting member is provided on the back plate, and when the baffle is at the second position, the limiting member resists the baffle and limits the baffle from moving away from the first position from the second position.

In futher, the back plate is provided with two flanged edges arranged opposite to each other up and down, the two flanged edges extend in the left-right direction, upper and lower ends of the baffle are respectively inserted in grooves of the flanged edges, and the baffle slides in the left-right direction relative to the flanged edges to reciprocate between the first position and the second position.

As compared with the prior art, the present invention has the following advantageous effects: with the baffle being disposed in the refrigerator of the present invention, the baffle may close the first air vent on the back plate of the compressor compartment when the refrigerator is embedded into the cupboard so that the compressor compartment employs the second air path, i.e., the third air vent on the bottom plate of the compressor compartment is communicated with the second air vent on the back plate of the compressor competent via the heat dissipation blower so that the air flows through the third air vent and then through the second air vent for circulation; by changing the air-ingress-air-egress path in the compressor compartment for heat dissipation purpose so that the hot air discharged from the compressor compartment will not blend with cold air sucked into the compressor compartment, the refrigerator in the present invention achieves the efficient heat dissipation of the compressor compartment after the refrigerator is embedded into the cupboard, and avoids the following problems due to use of the first air path: when the air flows through the first air vent on the back plate of the compressor compartment to the second air vent on the back plate of the compressor compartment via the heat dissipation blower in the compressor compartment, the blend of cold air and hot air caused because both the first air vent and second air vent are located on the back plate of the compressor compartment causes a higher temperature of the air in the compressor compartment, thereby causing the reduction of the performance of the compressor and the condenser and the increase of the energy consumption of the refrigerator.

The present invention will be described in detail with reference to embodiments shown in the figures.

In the figures of the present invention, some dimensions of structures or portions might be enlarged relative to other structures or portions to facilitate illustration, and therefore are only intended to illustrate basic structures of the subject matter of the present invention.

It should be appreciated that although terms such as "first" and "second" may be used to describe various elements or structures in the text herein, these described objects should not be limited by these terms. These terms are only used to distinguish these described objects from one another.

Referring to <FIG>, a refrigerator <NUM> according to an embodiment of the present invention comprises a compressor compartment <NUM> disposed in its lower rear portion, a front wall <NUM> and a rear wall <NUM> arranged opposite to each other in a front-rear direction, a pair of side walls <NUM> arranged opposite to each other in a left-right direction, and a storage compartment. The storage compartment is enclosed by the front wall <NUM>, the rear wall <NUM> and the pair of side walls <NUM>.

Referring to <FIG> and <FIG>, the compressor compartment <NUM> comprises a built-in space <NUM>, a compartment wall <NUM> enclosing the built-in space <NUM>, and a heat dissipation fan <NUM>, a compressor <NUM> and an evaporator <NUM> disposed in the built-in space <NUM>. The compartment wall <NUM> comprises a back plate <NUM> disposed behind the built-in space <NUM>, and a bottom plate <NUM> disposed below the built-in space <NUM>.

Referring to <FIG>, the compartment wall <NUM> is provided with a first air port <NUM>, a second air port <NUM> and a third air port.

The back plate <NUM> of the compressor compartment <NUM> has the first air port <NUM> and the second air port <NUM> arranged side by side in the left-right direction, and the first air port <NUM> and the second air port <NUM> are respectively communicated with a rear space of the refrigerator <NUM>, i.e., communicated with the external to facilitate the compressor compartment <NUM> to perform air flow exchange with the ambient environment through a rear portion of the compressor compartment <NUM>. The bottom plate <NUM> of the compressor compartment <NUM> is provided with the third air port communicated with a lower space of the refrigerator <NUM>, i.e., the third air port is communicated with the external so that the compressor compartment <NUM> performs air flow exchange with the ambient environment through the bottom of the compressor compartment <NUM>.

The first air port <NUM> may be an air inlet or an air outlet; when the first air port <NUM> is used as an air inlet, the second air port <NUM> serves as an air outlet, and the third air port also serves as an air inlet; when the first air port <NUM> is used as an air outlet, the second air port <NUM> serves as an air inlet, and the third air port also serves as an air outlet.

With the first air port <NUM>, the second air port <NUM> and the third air port being disposed on the compartment wall <NUM>, the built-in space <NUM> of the compressor compartment <NUM> has a first air passage and a second air passage. The first air passage communicates with the first air port <NUM> and the second air port <NUM> and passes through the heat dissipation fan <NUM>. And the second air passage communicates with the third air port and the second air port <NUM> and passes through the heat dissipation fan <NUM>.

For ease of description, in the present embodiment, a reference is taken in which the user faces the rear wall <NUM> of the refrigerator <NUM>. A direction from the rear wall <NUM> to the front wall <NUM> of the refrigerator <NUM> is taken as a back-to-front direction, that is, the front wall <NUM> of the refrigerator <NUM> is located in front of the rear wall <NUM>, and a direction from the second air port <NUM> to the first air port <NUM> is taken as a left-to-right direction, that is, the first air port <NUM> is located on the right side of the second air port <NUM>. Then, one side wall <NUM> on a side close to the first air port <NUM> is defined as a right side wall, and the other side wall <NUM> on a side away from the first air port <NUM> is defined as a left side wall. In other embodiments, the first air port <NUM> may also be located on the left side of the second air port <NUM>.

Referring to <FIG> and <FIG>, the refrigerator <NUM> further comprises a shielding member for opening or closing the first air outlet <NUM>. When the first air port <NUM> is opened, both the first air passage and the second air passage form a circulation loop with the external; when the first air port <NUM> is closed by the shielding member, the second air passage forms a circulation loop with the external.

In the present embodiment, the shielding member employs a baffle <NUM>, which is movably disposed at the first air port <NUM>. The baffle <NUM> has a first position for opening the first air port <NUM> and a second position for closing the first air port <NUM>. With the baffle <NUM> being provided, the baffle <NUM> may close the first air port <NUM> on the back plate <NUM> of the compressor compartment <NUM> when the refrigerator <NUM> is embedded in the cupboard <NUM>, so that the compressor compartment <NUM> employs the second air passage, i.e., air circulates from the third air port on the bottom plate <NUM> of the compressor compartment <NUM>, via the heat dissipation fan <NUM> to the second air port <NUM> on the back plate <NUM> of the compressor compartment <NUM>. The ingress air and egress air path for heat dissipation in the compressor compartment <NUM> is changed so that the hot air discharged out of the compressor compartment <NUM> does not blend with cold air sucked into the compressor compartment <NUM>, thereby achieving efficient heat dissipation of the compressor compartment <NUM> after the refrigerator <NUM> is embedded into the cupboard <NUM>, and avoiding the following problems: the blending of cold air and hot air because both the first air port <NUM> and second air port <NUM> are located on the back plate <NUM> of the compressor compartment <NUM>, a higher air temperature in the compressor compartment <NUM>, affect to the performance of the compressor <NUM> and condenser, and the energy consumption increasing of the refrigerator <NUM>. The above problems are caused when the first air passage which is from the first air port <NUM> on the back plate <NUM> of the compressor compartment <NUM>, via the heat dissipation fan <NUM> to the second air port <NUM> on the back plate <NUM> of the compressor compartment <NUM>.

The baffle <NUM> may be disposed on the inner side of the back plate <NUM>, or may be disposed on the outer side of the back plate <NUM> according to demands such as aesthetic appeal.

Referring to <FIG> and <FIG> to <FIG>, furthermore, the refrigerator <NUM> further comprises a driving mechanism <NUM> which drives the baffle <NUM> to move between the first position and the second position, so that the baffle <NUM> opens or closes the first air port <NUM>.

Referring to <FIG> and <FIG>, further, the driving mechanism <NUM> is configured as a push rod <NUM>. The push rod <NUM> moves in a left-right direction relative to the baffle <NUM> to push the baffle <NUM> to move from the first position to the second position, i.e., push the baffle <NUM> to shield the first air port <NUM> so that the first air port <NUM> is in a closed state. The push rod <NUM> has a first end <NUM> and a second end <NUM> that are arranged opposite to each other in the left-right direction. The first end <NUM> is connected to the baffle <NUM>; when the baffle <NUM> is at the first position, the second end <NUM> protrudes out of the side wall <NUM> of the refrigerator <NUM> in the left-right direction.

In the present embodiment, the first end <NUM> is located at the left end of the push rod <NUM>, and the second end <NUM> is located at the right end of the push rod <NUM>. When the baffle <NUM> is at the first position, the second end <NUM> protrudes rightward out of the right side wall <NUM> of the refrigerator <NUM> in the left-right direction. In this way, when the refrigerator <NUM> is embedded in the cupboard <NUM>, the second end <NUM> of the push rod <NUM> interferes with the wall of the cupboard <NUM>. Under the action of the wall of the cupboard <NUM>, the second end <NUM> of the push rod <NUM> receives a force and moves in the left-right direction, and push the baffle <NUM> to move leftward in the left-right direction to shield the first air port <NUM>, so that the first air port <NUM> is in the closed state.

In other embodiments, when the first air port <NUM> is located on the left side of the second air port <NUM>, the first end <NUM> is located at the right end of the push rod <NUM>, the second end <NUM> is located at the left end of the push rod <NUM>, and the baffle <NUM> is located at the first position, the second end <NUM> protrudes leftward out of the left side wall <NUM> of the refrigerator <NUM> in the left-right direction. When the refrigerator <NUM> is embedded in the cupboard <NUM>, the second end <NUM> of the push rod <NUM> interferes with the wall of the cupboard <NUM>. Under the action of the wall of the cupboard <NUM>, the second end <NUM> of the push rod <NUM> receives a force and moves rightward in the left-right direction, and push the baffle <NUM> to move rightward to shield the first air port <NUM> so that the first air port <NUM> is in the closed state.

Referring to <FIG>, further, the end face of the second end <NUM> is set as an arcuate surface or an inclined surface gradually away from the side wall <NUM> from back to front. When the refrigerator <NUM> is embedded in the cupboard <NUM>, the rear end face of the second end <NUM> first resists the wall of the cupboard <NUM>, and then transitions along the arcuate end face to the front end face to resist the wall of the cupboard <NUM>. Under the action of the wall of the cupboard <NUM>, the push rod <NUM> gradually moves from right to left. As such, the end face of the second end <NUM> and the wall of the cupboard <NUM> move relative to each other in the front-rear direction, which not only saves effort, but also avoids the damage to the wall of the cupboard <NUM> by the second end <NUM>.

Referring to <FIG> and <FIG>, furthermore, the driving mechanism <NUM> further comprises an elastic member <NUM> connecting the back plate <NUM> with the push rod <NUM>. The elastic member <NUM>, via the push rod <NUM>, drives the baffle <NUM> to return from the second position to the first position, and allows the push rod <NUM> to stably drive the baffle <NUM> to move in the left-right direction; when the baffle <NUM> is at the first position, the elastic member <NUM> has a first deformation amount; when the baffle <NUM> is at the second position, the elastic member <NUM> has a second deformation amount; the second deformation amount is greater than the first deformation amount, that is, when the driving mechanism <NUM> drives the baffle <NUM> to move from the first position to the second position, the driving mechanism <NUM> acts on the elastic member <NUM> to further elastically deform the elastic member <NUM>; when the baffle <NUM> is at the second position and when the external force is removed, the elastic member <NUM> has an elastic restoration force driving the baffle <NUM> to return from the second position to the first position, to overcome the elastic deformation of the elastic member <NUM>. In the present embodiment, the elastic member <NUM> is provided on the right side of the first air port <NUM>.

Referring to <FIG> and <FIG>, to further drive the push rod 171to move stably in the left-right direction and drive the baffle <NUM> to move stably in the left-right direction, the back plate <NUM> is provided with a guide rail <NUM> extending in the left-right direction. The elastic member <NUM> is a spring sleeved on an outer circumference of the push rod <NUM>. The push rod <NUM> and the spring are built into the guide rail <NUM>, the inner wall of the guide rail <NUM> is provided with a limiting portion <NUM>, the push rod <NUM> is provided with a flange <NUM>, an end of the spring adjacent to the first air port <NUM>, i.e., the left end resists the limiting portion <NUM>, and the other end of the spring away from the first air port <NUM>, i.e., the right end, resists the flange <NUM>. The push rod <NUM> compresses the spring and pushes the baffle <NUM> to move from the first position to the second position, and the end of the spring adjacent to the first air port <NUM> is relatively fixed to the back plate <NUM>. When the push rod <NUM> pushes the baffle <NUM> to move from the first position to the second position, the flange <NUM> of the push rod <NUM> resists the right end of the spring and compresses and move the spring leftward to elastically deform the spring. In other embodiments, the elastic member <NUM> may also be in the form of a bellows, a rubber tube, etc., as long as it has elastic deformation.

Referring to <FIG> and <FIG>, further, a limiting member <NUM> is provided on the back plate <NUM>. Specifically, in the present embodiment, the limiting member <NUM> is a limiting post. When the baffle <NUM> is at the first position, the baffle <NUM> opens the first air port <NUM>, and there is a gap between the baffle <NUM> and the limiting member <NUM>; when the baffle <NUM> is at the second position, the limiting member <NUM> resists the baffle <NUM> and restricts the baffle <NUM> from moving away from the first position from the second position. The setting of the limiting member <NUM> defines a limit position of leftward movement of the baffle <NUM>, and prevents the baffle <NUM> from moving to stagger with the first air port <NUM> to fail to completely shield the first air port <NUM> so that the hot air discharged out of the compressor compartment <NUM> blends with cold air and enters the compressor compartment <NUM> again, thereby causing problems such as the increase of the energy consumption of the refrigerator <NUM> and reduction of the performance of the condenser and the compressor <NUM>.

Furthermore, the refrigerator <NUM> further comprises a control system comprising a collection unit and a fan control unit. The collection unit is configured to collect a power-on signal of the refrigerator <NUM> and a closing signal and an opening signal of the first air port <NUM>. The fan control unit is connected to the collection unit, and configured to control the heat dissipation fan <NUM> to operate at a preset rotation speed Nf1 when the collection unit collects the opening signal of the first air port <NUM>; control the heat dissipation fan <NUM> to operate at a preset rotation speed Nf2 when the collection unit collects the closing signal of the first air port <NUM> and the power-on signal of the refrigerator <NUM>; where Nf2>Nf1.

Preferably, Nf2 is <NUM>%~<NUM>% times Nf1, and neither Nf1 nor Nf2 exceeds a rated rotation speed of the heat dissipation fan <NUM>.

In this way, when the first air port <NUM> is closed and the refrigerator <NUM> is powered on, i.e., when the refrigerator <NUM> is embedded in the cupboard <NUM> and powered on, it is possible to, by collecting relevant signals and controlling the rotation speed of the heat dissipation fan <NUM> to increase, improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment <NUM> and the external, and achieve the automatic control and intelligence of the refrigerator <NUM>.

Furthermore, the collection unit is further configured to collect temperature of the storage compartment; the fan control unit is further configured to: when the collection unit collects the closing signal of the first air port <NUM> and the power-on signal of the refrigerator <NUM>, control the heat dissipation fan <NUM> to operate at the preset rotation speed Nf2, and control the heat dissipation fan <NUM> to operate at the preset rotation speed Nf1 only when the temperature of the storage compartment reaches a preset temperature T.

Referring to <FIG>, furthermore, the refrigerator <NUM> further comprises a first conductive end <NUM> provided on the shielding member and a second conductive end <NUM> provided on the compartment wall <NUM>. Specifically, in the present embodiment, the first conductive end <NUM> is provided on the baffle <NUM>, and the second conductive end <NUM> is provided on the limiting member <NUM>. When the baffle <NUM> is at the first position, i.e., when the shielding member opens the first air port <NUM>, the first conductive end <NUM> is separated from the second conductive end <NUM>, and the collecting unit collects the opening signal of the first air port <NUM>. When the baffle <NUM> is at the second position, i.e., when the shielding member closes the first air port <NUM>, the first conductive end <NUM> and the second conductive end <NUM> contact each other and generate an electrical signal, and the collection unit collects the closing signal of the first air port <NUM>.

In order to make the first conductive end <NUM> contacts the second conductive end <NUM> on the limiting post when the baffle <NUM> is at the second position, the left end of the first conductive end <NUM> is located at a position of a left edge of the baffle <NUM> corresponding to the limiting post. The shape of the first conductive end <NUM> is not limited, as long as the first conductive end <NUM> does not affect the shielding of the first air port <NUM> by the baffle <NUM>.

Furthermore, the control unit is further configured to control the compressor <NUM> to operate at a preset rotation speed Nc1 when the collecting unit collects the opening signal of the first air port <NUM>, and control the compressor <NUM> to operate at a preset rotation speed Nc2 when the collecting unit collects the closing signal of the first air port <NUM> and the power-on signal of the refrigerator <NUM>; where Nc2>Nc1. As such, when the first air outlet <NUM> is closed and the refrigerator <NUM> is powered on, i.e., when the refrigerator <NUM> is inserted into the cupboard <NUM> and turned on, rapid cooling may be achieved so that the refrigerator <NUM> can quickly reach the preset temperature T.

Preferably, Nc2 is <NUM>% to <NUM>% times Nc1, and none of Nc1 and Nc2 exceeds the rated rotation speed of the compressor <NUM>.

Referring to <FIG>, furthermore, the back plate <NUM> is provided with two flanges <NUM> opposite to each other up and down. The two flanges <NUM> extend in the left-right direction. Upper and lower ends of the baffle <NUM> are respectively inserted into the grooves of the flanges <NUM> to limit the trajectory of the transverse movement of the baffle <NUM>, and the baffle <NUM> may slide relative to the flanges <NUM> in the left-right direction to reciprocate between the first position and the second position. The flanges <NUM> are disposed at positions matching the baffle <NUM>. When the baffle <NUM> is disposed on the inner side of the back plate <NUM>, the flanges <NUM> are also correspondingly disposed on the inner side of the back plate <NUM>; when the baffle <NUM> is disposed on the outer side of the back plate <NUM>, the flanges <NUM> are also correspondingly disposed on the outer side of the back plate <NUM>.

Referring to <FIG>, the baffle <NUM> comprises openings <NUM> and ribs <NUM> that are arranged at an interval. When the baffle <NUM> is at the first position, the openings <NUM> are aligned with the first air port <NUM> to open the first air port <NUM>; when the baffle <NUM> is at the second position, the ribs <NUM> shield the first air port <NUM> to close the first air port <NUM>. A width of the gap between the baffle <NUM> and the limiting member <NUM> is the same as the width of the openings <NUM>, so that when the baffle <NUM> moves to resist the limiting member <NUM>, the ribs <NUM> right shield the first air port <NUM>.

The difference between Embodiment <NUM> and Embodiment <NUM> is as follows:
The driving mechanism <NUM> is an electric drive mechanism. The control system further comprises a drive control unit connected to the electric drive mechanism. Under the control of the drive control unit, the electric drive mechanism is activated to drive the shielding member to close the first air port <NUM>.

Referring to <FIG>, the electric drive mechanism comprises an electromagnet <NUM> and a magnetically conductive block <NUM>. One of the electromagnet <NUM> and the magnetically conductive block <NUM> is disposed on the back plate <NUM>, and the other of the electromagnet <NUM> and the magnetically conductive block <NUM> is disposed on the baffle <NUM>. The electromagnet <NUM>, after being energized, fits with the magnetically conductive block <NUM> to drive the baffle <NUM> to move from the first position to the second position. Specifically, in the present embodiment, the electromagnet <NUM> is disposed on the back plate <NUM> and the magnetically conductive block <NUM> is disposed on the baffle <NUM>.

Furthermore, the refrigerator <NUM> further comprises an elastic return member <NUM> which drives the baffle <NUM> to move to return from the second position to the first position to open the first air port <NUM>.

Furthermore, the refrigerator <NUM> further comprises a sensor that detects position information of the refrigerator <NUM> and an obstacle. The drive control unit is connected to the sensor, and the drive control unit is configured to control the electric drive mechanism to be energized and activated according to the position information so that the electric drive mechanism drives the baffle <NUM> to move from the first position to the second position.

Specifically, in the present embodiment, the sensor is a distance sensor provided on the side wall <NUM>, the distance sensor is configured to detect the distance information between the refrigerator <NUM> and the obstacle, and the collection unit is connected to the distance sensor and collects the distance information between the refrigerator <NUM> and the obstacle. When the distance between the refrigerator <NUM> and the obstacle is shorter than a preset distance D, the drive control unit controls the electromagnet <NUM> to be energized to conduct magnetism to drive the baffle <NUM> to move from the first position to the second position.

Except for the above-mentioned differences, other structures of Embodiment <NUM> and Embodiment <NUM> are the same, and will not be described in detail any more here.

Referring to <FIG>, the present invention further provides a method for controlling the refrigerator <NUM>, the method comprising the following steps:.

As such, when the refrigerator <NUM> is powered on and the first air port <NUM> is closed, i.e., when the refrigerator <NUM> is embedded in the cupboard <NUM> and powered on, it is possible to, by increasing the rotation speed of the heat dissipation fan <NUM>, improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment <NUM> and the external, and achieve the automatic control and intelligence of the refrigerator <NUM>.

Furthermore, the method of controlling the refrigerator <NUM> further comprises the following steps:
When the power-on signal of the refrigerator <NUM> is collected, the closing signal of the first air port <NUM> is collected and the second air passage forms a circulation loop with the external, controlling the heat dissipation fan <NUM> to operate at the preset rotation speed Nf2, and controlling the heat dissipation fan <NUM> to operate at the preset rotation speed Nf1 only when the temperature of the storage compartment of the refrigerator <NUM> reaches the preset temperature T.

When the temperature of the storage compartment reaches the preset temperature of the refrigerator <NUM>, the heat dissipation fan <NUM> operates at a normal rotation speed to achieve normal heat dissipation of the compressor compartment <NUM>.

In order to illustrate the effect of the refrigerator <NUM> in addressing the problem of blending of hot air and cold air in the compressor compartment, simulation is performed as follows for the heat dissipation of the compressor compartment of the refrigerator, with the ambient temperature being <NUM>.

Simulation and analysis results of the effective air amounts, average temperatures of ingress air and average temperatures of the condensers of the three sets of refrigerators listed in the following table are obtained by performing simulation and analysis for the above three sets of refrigerators:.

Referring to <FIG>, as known from the above simulation and analysis data, when the ordinary refrigerator is embedded into the cupboard, since the hot air discharged out of the air port on the back plate of the compressor compartment blends with cold air and re-enters the compressor compartment, the average temperature of the ingress air in the compressor compartment rises, the effective air amount reduces, and the temperature of the condenser increases significantly; as compared with the ordinary refrigerator, when the refrigerator of the present embodiment is embedded in the cupboard, it is possible to, by shielding the first air port, effectively prevent the hot air discharged out of the compressor compartment from blending with cold air and re-entering the compressor compartment, increase the amount of effective air entering the compressor compartment, reduces the average temperature of the ingress air in the compressor compartment and the average temperature of the condenser, and achieves an effect approximate to a normal refrigerator when not embedded in the cupboard.

In other words, in the refrigerator <NUM> of the present embodiment, the ingress air and egress air path for heat dissipation in the compressor compartment <NUM> is changed so that the hot air discharged out of the compressor compartment <NUM> does not blend with cold air sucked into the compressor compartment <NUM>, thereby avoiding the following problems: the blending of cold air and hot air caused by the first air port <NUM> and the second air port <NUM> located on the back plate <NUM> of the compressor compartment <NUM>, the high temperature of the ingress air in the compressor compartment <NUM>, reduction of the performance of the compressor <NUM> and the condenser, and the increase of the energy consumption of the refrigerator <NUM>.

As compared with the prior art, the refrigerator <NUM>, the controlling system of the refrigerator <NUM> and the controlling method of the refrigerator <NUM> according to the present invention have the following advantageous effects: in the refrigerator <NUM> according to the present invention, the ingress air and egress air path for heat dissipation in the compressor compartment <NUM> is changed so that the hot air discharged out of the compressor compartment <NUM> does not blend with cold air sucked into the compressor compartment <NUM>, thereby achieving the efficient heat dissipation of the compressor compartment <NUM> after the refrigerator <NUM> is embedded in the cupboard <NUM>; the drive mechanism <NUM> is provided to drive the baffle <NUM> to open or close the first air port <NUM>; the second end <NUM> of the push rod <NUM> protrudes out of the side wall <NUM> of the refrigerator <NUM> in the left-right direction, so that the baffle <NUM> can automatically close the first air port <NUM> by virtue of the action of the cupboard <NUM> when the refrigerator <NUM> is embedded in the cupboard <NUM>; the return and stability of the push rod <NUM> is achieved by the spring; the guidance and stabilization of the push rod <NUM> is achieved through the guide rail <NUM>; the baffle <NUM> may be automatically controlled to close the first air port <NUM> through the cooperation of the electromagnet <NUM> and the magnetically conductive block <NUM>; the return of the magnetically conductive block <NUM> may be achieved through the return spring <NUM>; with the first conductive end <NUM> and second conductive end <NUM> being disposed on the baffle <NUM> and back plate <NUM>, when the baffle <NUM> moves to close the first air port <NUM>, an electrical signal is generated; the cooperation of the baffle <NUM> and the first air port <NUM> may be achieved by providing the limiting member <NUM> on the back plate <NUM>, so that the baffle <NUM> exactly shields the first air port <NUM>; it is possible to, by providing the control system to collect relevant signals of the refrigerator <NUM> and control the rotation speed of the heat dissipation fan <NUM> to increase, improve a discharge amount and discharge efficiency of hot air as well as the intake amount and air intake efficiency of the cold air, solve the problem of poor heat dissipation caused by the reduction of the number of air ports for air exchange between the compressor compartment <NUM> and the external, and achieve the automatic control and intelligence of the refrigerator <NUM>; the intelligentization of the refrigerator <NUM> is achieved by providing the sensor to detect the position information of the refrigerator <NUM> and the obstacle to judge whether the refrigerator <NUM> is embedded in the cupboard <NUM>; in addition, according to the controlling method of the refrigerator <NUM>, the intelligentization degree of the refrigerator <NUM> is substantially improved by collecting the power-on signal of the refrigerator <NUM> and the opening signal and closing signal of the first air port <NUM> to control the rotation speed of the heat dissipation fan <NUM> to change. The simulation tests further prove that the refrigerator according to embodiments, when embedded in the cupboard, may effectively prevent the hot air discharged out of the compressor compartment from blending with cold air and re-entering the compressor compartment, increase the amount of effective air entering the compressor compartment, and reduces the average temperature of the ingress air in the compressor compartment and the average temperature of the condenser.

It should be understood that although the description is described according to the embodiments, not every embodiment only comprises one independent technical solution, that such a description manner is only for the sake of clarity, that those skilled in the art should take the description as an integral part, and that the technical solutions in the embodiments may be suitably combined to form other embodiments understandable by those skilled in the art.

Claim 1:
A refrigerator (<NUM>), comprises a pair of side walls (<NUM>) arranged opposite to each other in the left-right direction and a compressor compartment (<NUM>) disposed in its lower rear portion thereof, the compressor compartment (<NUM>) comprises a built-in space (<NUM>), a heat dissipation fan (<NUM>) disposed in the internal space, a back plate (<NUM>) disposed in the rear of the built-in space (<NUM>), and a bottom plate (<NUM>) disposed below the built-in space (<NUM>),
wherein the back plate (<NUM>) has a first air port (<NUM>) and a second air port (<NUM>) arranged side by side in the left-right direction, the first air port (<NUM>) and the second air port (<NUM>) are respectively communicated with a rear space of the refrigerator (<NUM>), the bottom plate (<NUM>) is provided with a third air port communicated with a lower space of the refrigerator (<NUM>),
the built-in space (<NUM>) has a first air passage and a second air passage, the first air passage communicates with the first air port (<NUM>) and the second air port (<NUM>) and passes through the heat dissipation fan (<NUM>), the second air passage communicates with the third air port and the second air port (<NUM>) and passes through the heat dissipation fan (<NUM>),
the refrigerator (<NUM>) further comprises a baffle (<NUM>) and a driving mechanism (<NUM>), the baffle (<NUM>) is movably disposed at the first air port (<NUM>), and the baffle (<NUM>) has a first position for opening the first air port (<NUM>) and a second position for closing the first air port (<NUM>);
characterized in that
the driving mechanism (<NUM>) is configured as a push rod (<NUM>), the push rod (<NUM>) moves in the left-right direction relative to the baffle (<NUM>) to push the baffle (<NUM>) to move from the first position to the second position, the push rod (<NUM>) has a first end (<NUM>) and a second end (<NUM>) that are arranged opposite to each other in the left-right direction, and the first end (<NUM>) is connected to the baffle (<NUM>), the end face of the second end (<NUM>) is set as an arcuate surface or an inclined surface gradually away from the side wall (<NUM>) from back to front; when the baffle (<NUM>) is at the first position, the second end (<NUM>) protrudes out of the side wall (<NUM>) in the left-right direction.