Patent Description:
The present disclosure relates to the field of gas heating, in particular, to a gas device.

At present, a gas water heater is a device that heats cold water by burning gas.

In the related art, the main combustion method adopted by the gas water heater is flame combustion. With the continuous development of combustion technology, the burning intensity of the burner is increasing, the working temperature of the combustion chamber is increased, and the high temperature will affect the service life of the sheet metal components of the burner.

<CIT> discloses a combustion device comprising a combustion chamber outer and inner wall, a burner chamber, a blower, a burner, and a flow connection portion provided between the blower and the burner for transmitting air and gas from the blower to the burner. The flow connection portion comprises a first flow connection member and a second flow connection member having a space for the first flow connection member to insert in; wherein a first air passage being formed inside the first flow connection member, through which most of the air and gas being delivered to the burner; and wherein a second air passage located at four corners along the space in the second flow connection member, through which the remaining air and gas being delivered, following the flowing direction, firstly to a space between the burner chamber and the combustion chamber outer wall, and subsequently to a cooling channel between the combustion chamber inner wall and the combustion chamber outer wall. Lastly, the air and gas inside the cooling channel are ejected through air outlets provided in the combustion chamber inner wall.

<CIT> depicts a water heater for use in general households with high load combustion and having cooling capability. The water heater comprises an outer body surrounding a peripheral wall and defining an air supply channel therebetween. The peripheral wall defines a combustion chamber and is provided with a plurality of air outlets and a ventilation channel. When a fan located at the bottom of the outer body supplies air upwards, the air flows into three directions. Firstly, a part of the air flows into the combustion chamber together with fuel. Secondly, another part of the air goes into the air supply channel and goes through the ventilation channel into an air delivery chamber below a burner plane, and the air erupts into the interior of the combustion chamber through air outlets on the burner plane. Lastly, the last part of the air goes into the air supply channel and erupts horizontally from the air pots on the peripheral wall into the combustion chamber.

<CIT> provides a combustion chamber cooling apparatus that allows part of the air supplied by a blower to flow into a lower portion of a burner, while the other part of the air to flow into a combustion chamber after cooling the outside of the combustion chamber.

The combustion device in <CIT> comprises a frame body provided with air inlets, a heat shield, an air flow path formed between an upper part of the frame body and the heat shield, and an air passage section formed between a lower part of the frame body and the burner. When the upper fan is activated, air coming into the air passage section cools the frame body, while air coming into the air flow path cools the heat shield, and the cooling effects is good because the air in the air passage section and that in the air flow path do not mix with each other.

The combustion disclosed in <CIT> has a simplified coupling structure between the inner walls and outer walls of a combustion chamber, wherein an air flow space is formed between the inner and outer walls of the combustion chamber, and air supplied from a fan to the air flow space can cool the combustion chamber.

The present disclosure aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, a first aspect of the present disclosure provides a gas device.

A second aspect of the present disclosure provides a gas device.

A third aspect of the present disclosure provides a gas device.

In view of this, the first aspect of the present disclosure provides a gas device with good air cooling effect and long service life of components.

The gas device according to the embodiment of the present disclosure, comprises a frame, defining a chamber; a burner, being arranged at a bottom side of the chamber; a fan, being arranged on an outside of the frame, an outlet of the fan facing the burner; and a baffle, being arranged at an inner side of the frame, and spaced apart from at least a portion of an inner wall of the frame to form an air duct, wherein air sent out by the fan comprises a portion that flows into the air duct, and another portion that flows into the burner, the baffle provided with a plurality of air outlets along a flow direction of the air duct; and an air inlet (<NUM>) surface of the air duct (<NUM>) being lower than a burning surface of the burner (<NUM>); wherein a plurality of steering portions are formed on the baffle, and protrudes from inside to outside of the baffle, the air outlet provided on the steering portion.

The gas device according to the embodiment of the present disclosure, by constructing an air duct for air-cooling the frame on the frame and the baffle, the baffle is provided with a plurality of air outlets on the flow direction of the air duct, forming an air film on the inner side of the baffle to block the flow of hot air toward the baffle, improving the air cooling effect of the air in the air duct on the frame, effectively avoiding the conduction of high temperature to the outside of the frame, and improving the service life of the components of the gas device.

In addition, according to the embodiment of the present disclosure, the gas device may also have the following additional technical features.

In one embodiment, the steering portion comprises a first section extending outward in a horizontal direction, a second section connected to the first section at one end and extending upward in a vertical direction, and a third section connected to the second section at one end and extending obliquely in an up-down direction, wherein the air outlet is formed on the first section.

Further optionally, the air outlet is a strip-shaped hole extending along a horizontal direction.

In an optional example, the air outlet is evenly distributed along a circumferential direction of the baffle.

In an optional example, the air inlet area of the air duct is larger than the air outlet area.

Further optionally, the ratio of the air inlet area to the air outlet area of the air duct is between <NUM>:<NUM> and <NUM>:<NUM>.

In one embodiment, an air inlet surface of the air duct is lower than a burning surface of the burner.

In one embodiment, an upper part of the baffle is further provided with a hollow convex column, extending toward the frame, a cavity of the hollow convex column forming the air outlet.

In an optional example, a distance between the hollow convex column and a top surface of the air duct is d, wherein a height of the air duct is h, and wherein d/h is between <NUM>/<NUM> and <NUM>/<NUM>.

The second aspect of the present disclosure provides a gas device, comprising: a frame; a burner, being arranged in the frame; a baffle, being arranged at an inner side of the frame, and spaced apart from at least a portion of an inner wall of the frame to form an air duct, wherein air sent out by the fan comprises a portion that flows into the air duct, and another portion that flows into the burner, and the baffle is provided with a plurality of air outlets along a flow direction of the air duct.

The gas device according to the embodiment of the present disclosure, by constructing an air duct for air-cooling the frame on the frame and the baffle, and the baffle is provided with a plurality of air outlets on the air duct flow direction, forming an air film on the inner side of the baffle to block the flow of hot air toward the baffle, improving the air cooling effect of the air in the air duct on the frame, effectively avoiding the conduction of high temperature to the outside of the frame, and improving the service life of the components of the gas device.

In an embodiment of the present disclosure, the gas device further comprising: the fan, being arranged outside the frame, an outlet of the fan facing the burner, and being used to send air into the frame.

In an embodiment of the present disclosure, the frame defines a chamber, and the burner is arranged at a bottom side of the chamber.

In some embodiments presented in the disclosure, a plurality of steering portions are formed on the baffle, and protrudes from inside to outside of the baffle, and the air outlet is provided on the steering portion.

In one embodiment, the steering portion comprises a first section extending toward a sidewall of the frame, a second section connected to the first section at one end and extending upward, wherein the air outlet is provided on the first section.

In some embodiments presented in the disclosure, wherein the baffle is connected to a sidewall of the frame, wherein the baffle comprises a heat insulation portion arranged obliquely with respect to a sidewall of the frame, wherein one end of the heat insulation portion away from a sidewall of the frame bends outward to form a steering portion, and/or one end of the heat insulation portion closer to a sidewall of the frame bends inward to form a steering portion.

In some embodiments presented in the disclosure, the baffle further comprises an air guide portion, wherein one end of the air guide portion is connected to the frame, the other end of the air guide portion connected to the heat insulation portion, and the air inlet of the air duct being provided guide portion, wherein a first air guide channel is surrounded by the air guide portion and the sidewall of the frame, the air guide portion provided with a first air outlet, wherein the first air outlet communicates with the first air guide channel and faces the heat insulation portion.

In an embodiment of the present disclosure, the heat insulation portion comprises a first heat insulation section and a second heat insulation section. A second air guide channel surrounded by, the first heat insulation section and the frame, the second air guide channel communicates with the first air guide channel. A second air outlet is arranged on the steering portion formed by bending the top of the first heat insulation section to the sidewall of the frame, and the second air outlet communicates with the second air guide channel. The second air outlet is arranged on the steering portion of the first heat insulation section to face the second heat insulation section.

In this embodiment, the air blown from the first air outlet can be blown to the first heat insulation section, and while cooling the first heat insulation section, it can also form a layer of air film on the first heat insulation section, reducing the temperature of the first heat insulation section. A second air guide channel is arranged between the first heat insulation section and the frame, and the air flowing in the second air guide channel can cool down the first heat insulation section again, further reducing the temperature of the first heat insulation section. There is a second air outlet communicated with the second air guide channel on the first heat insulation section. The gas in the second air guide channel can be blown to the second heat insulation section by the second air outlet. While cooling the second heat insulation section, a layer of air film is formed on the second heat insulation section, reducing the temperature of the second heat insulation section.

In an embodiment of the present disclosure, the first heat insulation section comprises a plurality of insulation sub-sections, and the plurality of insulation sub-sections are connected in sequence, one of the plurality of insulation sub-sections is connected to the air guide portion and arranged opposite to the first air outlet, and another one of the plurality of insulation sub-sections is connected to the second heat insulation section, and is provided with the second air outlet, wherein the plurality of insulation sub-sections comprise adjacent insulation sub-sections, and one of the adjacent insulation sub-sections closer to the air guide portion is provided with a third air outlet, facing the other one of the adjacent insulation sub-sections.

In this embodiment, the first heat insulation section is provided with a plurality of insulation sub-sections, and the first air outlet faces the insulation sub-section connected to the air guide portion, realizing the cooling of the insulation sub-section. The second air outlet is arranged on the insulation sub-section connected to the second heat insulation section, the air in the second air guide channel can be blown to the second heat insulation section, cooling the second heat insulation section. All the insulation sub-sections are connected in sequence, in the adjacent insulation sub-sections, the insulation sub-section closer to the air guide portion is provided with a third air outlet. The air in the second air guide channel is blown to the insulation sub-section closer to the second heat insulation section through the third air outlet to cool the insulation sub-section closer to the second heat insulation section.

In an embodiment of the present disclosure, the first heat insulation section is connected to the second heat insulation section, and one end of the second heat insulation section connected to the first heat insulation section is in contact with the frame.

In this embodiment, the second heat insulation section is in contact with the frame, the air in the second air guide channel will not continue to flow when it flows to the second air outlet, but will be blown to the second heat insulation section by the second air outlet. In this way, the diversion of the air in the second air guide channel is realized, the utilization rate of the air in the second air guide channel is improved, and the heat dissipation efficiency of the second heat insulation section is improved.

In an embodiment of the present disclosure, a height of the air inlet is lower than a burning surface of the burner in vertical direction.

In this embodiment, above the top of the burner, high temperature flue gas or high temperature air will be generated due to the combustion of the flame. Set the air inlet below the burning surface of the burner to prevent the high temperature flue gas or high temperature air from entering the first air guide channel, the temperature of the gas in the first air guide channel is lowered, and the thermal insulation effect of the baffle and the air film is improved.

In an embodiment of the present disclosure, the heat insulation portion is arranged obliquely relative to the sidewall of the frame.

In this embodiment, the extension direction of the heat insulation portion is at a certain angle with the air outlet direction of the first air outlet, the gas blown out of the first air outlet will exert a certain pressure on the heat insulation portion while moving along the heat insulation portion, forming a heat insulating gas film on the surface of the heat insulation portion. The heat insulating gas film can slow down the speed of the air inside the frame transferring heat to the heat insulation portion, reducing the temperature of the heat insulation portion.

In an embodiment of the present disclosure, an angle between the heat insulation portion and a sidewall of the frame is at least <NUM> degrees and not more than <NUM> degrees.

In this embodiment, the angle between the air outlet direction of the first air outlet and the heat insulation portion is <NUM> degrees to <NUM> degrees. The gas flowing out from the first air outlet can evenly form a layer of heat insulating gas film on the heat insulation portion, reducing the temperature of the heat insulation portion.

In an embodiment of the present disclosure, the burner is an atmospheric type burner, and comprises a fire exhaust assembly arranged in parallel with the heat insulation portion.

In this embodiment, the burner belongs to the atmospheric type burner, and comprises a fire exhaust assembly arranged in parallel with the heat insulation portion, the heat insulation portion can effectively prevent the heat generated by the fire exhaust assembly from being transferred to the frame, further improving the thermal insulation effect of the heat insulation portion.

In an embodiment of the present disclosure, a plurality of heat insulation portions are provided, and the plurality of heat insulation portions being arranged on two sides of the burner or around the burner.

In this embodiment, the burner is arranged on the inner side of the frame, and the heat insulation portion is being arranged on two sides of the burner, or around the burner, which prevents the heat generated by the burner from being transferred to the frame to cause aging or deformation of the frame, and can reduce the heat loss inside the frame, and improve the heating efficiency of the burner.

In an embodiment of the present disclosure, a height of the heat insulation portion above the burner is at least <NUM> and not more than <NUM>.

In this embodiment, set a height of the heat insulation portion to be <NUM> to <NUM> higher than the top of the burner to ensure that the heat insulation portion can effectively insulate the heat generated by the burner and avoid material waste due to the high height of the heat insulation portion.

The third aspect of the present disclosure provides a gas device, comprising: a frame; a burner, being arranged in the frame; and a baffle, being connected to a sidewall of the frame, wherein the baffle comprises a first heat insulation portion arranged obliquely with respect to a sidewall of the frame, the first heat insulation portion spaced apart from at least a portion of an inner wall of the frame to form a cooling gap.

In this embodiment, by setting the first heat insulation portion on the inner side of the frame, and setting a cooling gap between the first heat insulation portion and the frame, the heat transferred from the inside of the frame to the frame can be reduced, reducing the temperature of the frame, reducing the impact of the high temperature generated by the burner on the frame and other sheet metal components, extending the service life of the frame and other sheet metal components. A cooling gap is arranged between the first heat insulation portion and at least a portion of the inner wall of the frame. If air flows through the cooling gap, the temperature of the first heat insulation portion can be lowered, and the heat transferred from the inside of the frame to the frame through the first heat insulation portion can be further reduced.

One end of the first heat insulation portion away from a sidewall of the frame is folded outward to form a steering portion, and/or one end of the first heat insulation portion closer to a sidewall of the frame is folded inward to form a steering portion, at least one of the steering portions is provided with an air outlet.

In this embodiment, the air is blown out from the air outlet after passing through the cooling gap, and blows to the first heat insulation portion. While realizing the cooling of the first heat insulation portion, a layer of heat insulating gas film can also be formed on the surface of the first heat insulation portion. The heat insulating gas film can reduce the heat transferred from the inside of the frame to the first heat insulation portion, further reduce the temperature of the first heat insulation portion, reducing the heat transferred from the inside of the frame to the frame through the first heat insulation portion, reducing the heat loss inside the frame, and improving the heating efficiency of the burner.

In an embodiment of the present disclosure, a top end of the first heat insulation portion further comprises a second heat insulation portion arranged parallel to a sidewall of the frame.

In this embodiment, by setting the second heat insulation portion, the thermal insulation range of the baffle is extended, and the thermal insulation effect of the baffle is further improved.

In an embodiment of the present disclosure, a gap between the second heat insulation portion and a sidewall of the frame is larger than or equal to a gap between the first heat insulation portion and a sidewall of the frame. One end away from the sidewall of the frame bends outward to form a steering portion, and/or one end of the heat insulation portion closer to the sidewall of the frame bends inward to form a steering portion, and an air outlet is provided on the steering portion.

In an embodiment of the present disclosure, the heat insulation portion comprises: a first heat insulation section and a second heat insulation section, wherein the first air outlet faces the first heat insulation section, a second air guide channel is surrounded by, the first heat insulation section and the frame, the second air guide channel communicates with the first air guide channel, and the first heat insulation section is provided with a second air outlet, and the second air outlet communicates with the second air guide channel; and the second air outlet towards the second heat insulation section.

In an embodiment of the present disclosure, the first heat insulation section comprises a plurality of heat insulation sub-sections, and the plurality of heat insulation sub-sections are connected in sequence, one of the plurality of heat insulation sub-sections is connected to the air guide portion and arranged opposite to the first air outlet, and another one of the plurality of heat insulation sub-sections is connected to the second heat insulation section, and is provided with the second air outlet, wherein the plurality of heat insulation sub-sections comprise adjacent insulation sub-sections, and one of the adjacent insulation sub-sections closer to the air guide portion is provided with a third air outlet facing the other one of the adjacent insulation sub-sections.

In this embodiment, the first heat insulation section is provided with a plurality of heat insulation sub-sections, and the first air outlet faces the insulation sub-section connected to the air guide portion, realizing the cooling of the insulation sub-section. The second air outlet is arranged on the insulation sub-section connected to the second heat insulation section, the air in the second air guide channel can be blown to the second heat insulation section, cooling the second heat insulation section. All the insulation sub-sections are connected in sequence, in the adjacent insulation sub-sections, the insulation sub-section closer to the air guide portion is provided with a third air outlet. The air in the second air guide channel is blown to the insulation sub-section closer to the second heat insulation section through the third air outlet to cool the insulation sub-section closer to the second heat insulation section.

In this embodiment, the angle between the sidewall of the frame and the heat insulation portion is <NUM> degrees to <NUM> degrees, the gas flowing out of the first air outlet can evenly form a layer of heat insulating gas film on the heat insulation portion, reducing the temperature of the heat insulation portion.

In an embodiment of the present disclosure, the burner is an atmospheric type burner, and the burner comprises a fire exhaust assembly arranged in parallel with the heat insulation portion.

In an embodiment of the present disclosure, a plurality of the heat insulation portions are provided, and the plurality of heat insulation portions being arranged on two sides of the burner or around the burner.

Additional aspects and advantages of the present disclosure will become apparent in the following description, or are understood by the practice of the present disclosure.

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments in conjunction with the drawings:.

The corresponding relationship between the reference signs and component names in <FIG> is as follows:
<NUM> frame, <NUM> baffle, <NUM> air guide portion, <NUM> first air outlet, <NUM> air inlet, <NUM> heat insulation portion, <NUM> first heat insulation section, <NUM> first insulation sub-section, <NUM> second insulation sub-section, <NUM> third insulation sub-section, <NUM> forth insulation sub-section, <NUM> second air outlet, <NUM> second heat insulation section, <NUM> third air outlet, <NUM> first air guide channel, <NUM> second air guide channel, <NUM> burner, <NUM> heat exchanger, <NUM> gas device, <NUM> chamber, <NUM> fan, <NUM> steering portion, <NUM> first section, <NUM> second section, <NUM> third section, <NUM> hollow convex column, <NUM> air duct, <NUM> air outlet, <NUM> heat exchanger.

In order that the above-mentioned objectives, features and advantages of the present disclosure can be understood more clearly, a further detailed description of the present disclosure will be given below in connection with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other if there is no conflict.

However, the present disclosure can also be implemented in other manners than those described herein. Therefore, the protection scope of the present disclosure is not limited to the specific embodiments disclosed below.

A gas device according to some embodiments of the present disclosure is described below with reference to <FIG>.

As shown in <FIG>, the gas device <NUM> is provided with a heat exchanger <NUM>, a burner <NUM> and a fan <NUM> in sequence from top to bottom. wherein, the burner <NUM> is arranged on the inner side of the frame <NUM>, the fan <NUM> is arranged on the outside of the frame <NUM>, the heat exchanger <NUM> can be arranged outside the frame <NUM> or inside the frame <NUM>, the heat exchanger <NUM> can also be partially arranged in the frame <NUM>, and another part can be arranged outside the frame <NUM>.

Specifically, as shown in <FIG>, the frame <NUM> defines a chamber <NUM>, the burner <NUM> is arranged above the bottom side of the chamber <NUM>, the fan <NUM> is arranged on the outside of the frame <NUM>, and the outlet of the fan <NUM> faces the burner <NUM>. That is, when the fan <NUM> is started, the air will be sent into the chamber <NUM> and mixed with the gas entering the burner <NUM> to form the air-fuel mixed gas to be burned. The air-fuel mixed gas is ignited in the burner <NUM>, and the generated high temperature flue gas enters the upper side of the chamber <NUM> and flows to the heat exchanger <NUM> to heat the water in the heat exchanger <NUM>.

In order to avoid the heat of the high temperature flue gas being conducted out of the frame <NUM> and causing damage to the components of the gas device <NUM>, the inner side of the frame <NUM> is further provided with a baffle <NUM>. The baffle <NUM> spaced apart from at least a portion of the inner wall of the frame <NUM>, constructing the air duct <NUM>. For example, when the frame <NUM> is a square frame, the baffle <NUM> spaced apart from at least one sidewall of the frame <NUM> (at least one of left wall, right wall, front wall and rear wall). In other words, the frame <NUM> is arranged in the circumferential direction of the baffle <NUM>, one or more air ducts <NUM> distributed along the circumferential direction are constructed by the frame <NUM> and the baffle <NUM>. The air duct <NUM> can form a single-cavity air duct in the circumferential direction, it is also possible to form multiple mutual air ducts in the circumferential direction.

Wherein, air sent out by the fan <NUM> comprises a portion that flows into the air duct <NUM>, and another portion that flows into the burner <NUM>. That is, a portion of the air enters the burner <NUM> to participate in combustion, and another part enters the air duct <NUM> for air cooling the frame <NUM>, which prevents the frame <NUM> from being overheated.

After many tests, the applicant found that after the air flows in the air duct <NUM> for a certain distance, the air temperature will rise to a higher temperature, and the frame <NUM> cannot be cooled, resulting in partial cooling failure of the frame <NUM>. Under the action of heat conduction, the part of the frame <NUM> that has been cooled will inevitably be heated again, and ultimately the purpose of cooling the frame <NUM> cannot be achieved.

In this embodiment, the baffle <NUM> is provided with a plurality of air outlets <NUM> in the flow direction of the air duct <NUM>. In this way, with the flow of air in the air duct <NUM>, multiple air flows are sprayed into the chamber <NUM> step by step, forming an air film on the inner side of the baffle <NUM>. The air film can block the flow of hot air to the baffle <NUM>; which prevents the air temperature in the air duct <NUM> from rising too high and the frame <NUM> cannot be cooled by air.

In short, according to the gas device <NUM> of the embodiment of the present disclosure, by constructing an air duct <NUM> for air-cooling the frame <NUM> on the frame <NUM> and the baffle <NUM>, and the baffle <NUM> is provided with a plurality of air outlets <NUM> on the flow direction of the air duct <NUM>, forming an air film on the inner side of the baffle <NUM> to block the flow of hot air toward the baffle <NUM>, improving the air cooling effect of the air in the air duct <NUM> on the frame <NUM>, effectively avoiding the conduction of high temperature to the outside of the frame <NUM>, and improving the service life of the components of the gas device <NUM>.

The chamber <NUM> defined by the frame <NUM> is a closed chamber <NUM>, the outside of the frame <NUM> is provided with a fan <NUM>, and the fan <NUM> sends air into the frame <NUM>.

The fan <NUM> is arranged below the frame <NUM>; the air sent into the frame <NUM> by the fan <NUM> moves from the lower part to the upper part of the chamber <NUM>, part of the air enters the burner, and is mixed with the gas in the burner and burned at the fire exhaust. Another part of the air enters into the air duct <NUM>, and continues to move upward in the air duct <NUM>, and then flows out from the air outlet <NUM> to form a flowing air film on the inner side of the baffle <NUM>.

As shown in <FIG>, a plurality of steering portions <NUM> are formed on the baffle <NUM>, the steering portion <NUM> protrudes from inside to outside, and the air outlet <NUM> is provided on the steering portion <NUM>. Referring to the wind direction indicator arrow in <FIG>, the airflow flows from bottom to top along the air duct <NUM>, and after encountering the steering portion <NUM>, a portion of the airflow is led to the direction of the burner <NUM>, that is, it flows out from the air outlet <NUM> provided in the steering portion <NUM>. In other words, the steering portion <NUM> acts as a block for the airflow in the air duct <NUM>, a portion of the airflow is branched out from the air outlet <NUM>, forming an air film on the inner wall surface of the baffle <NUM>, preventing the hot airflow from flowing in the direction of the frame <NUM>.

In an alternative embodiment, as shown in <FIG>, the steering portion <NUM> comprises a first section <NUM> extending outward in a horizontal direction, a second section <NUM> connected to the first section <NUM> at one end and extending upward in a vertical direction, and a third section <NUM> connected to the second section <NUM> at one end and extending obliquely in an up-down direction, wherein the air outlet <NUM> is formed on the first section <NUM>. Due to the blocking of the first section <NUM> of the steering portion <NUM>, the flow area of the air duct <NUM> is suddenly reduced, a portion of the airflow can flow out from the air outlet <NUM>, and another part of the airflow continues to flow upward, and flows out from the air outlet <NUM> of another steering portion <NUM>. In addition, the obliquely extending third section <NUM> can gradually increase the flow area of the air duct <NUM>, the airflow can flow upwards more smoothly.

The air outlet <NUM> is a strip-shaped hole extending along the horizontal direction. The strip-shaped air outlet structure can increase the air outlet surface as much as possible. This enables the entire circumferential inner wall surface of the baffle <NUM> to form an air film, which blocks the thermal airflow from approaching the frame <NUM> and further prevents the frame <NUM> from rising too high.

In an optional example, the air outlet <NUM> is evenly distributed along the circumferential direction of the baffle, which forms a uniform air film on the entire circumferential inner wall surface of the baffle <NUM>, block the hot air flow closer to the frame <NUM>, and ensure that the temperature of each part of the entire frame <NUM> is similar.

The air inlet area of the air duct <NUM> is larger than the air outlet area. That is, the total air inlet surface of the bottom side of the air duct <NUM> is larger than the total air outlet surface of the air outlet <NUM> on the baffle <NUM>. In this way, it can be ensured that there is sufficient air flow to the entire air duct <NUM>, when the air is at a certain height of the air duct <NUM>, the air cannot continue to flow upward due to insufficient air, causing the heat flow in the combustion chamber to flow back into the air duct <NUM>. Optionally, the air inlet <NUM> of the air duct <NUM> surrounds the burner <NUM>.

In an alternative embodiment, the ratio of air inlet area to air outlet area of air duct <NUM> is between <NUM>:<NUM> and <NUM>:<NUM>. In order to obtain a better ratio of the air inlet area to the air outlet area, the applicant has done a lot of experiments, because the input air provided by the fan <NUM> is mainly used for the combustion of the burner <NUM>. Under the condition that the air intake volume of the fan <NUM> remains the same, to transport a portion of the air into the air duct <NUM> will inevitably lead to a decrease in the intake air volume in the burner <NUM>, which may affect whether the gas in the burner <NUM> can be fully burned, that is, whether it will lead to the problem of excessive emission of waste gas. Therefore, under the condition of comprehensive consideration of various factors, the applicant set the ratio of air inlet area to air outlet area of the air duct <NUM> between <NUM>:<NUM> and <NUM>:<NUM>, which can ensure that there is enough air in the air duct <NUM>, it can also ensure that the gas is fully burned.

As shown in <FIG>, the air inlet surface of the air duct <NUM> is lower than the burning surface of the burner <NUM>. In this way, the smoke generated by the burning surface is blocked by the baffle <NUM> and can be collected in the chamber <NUM> to prevent the smoke from acting on the frame <NUM>.

In an alternative embodiment, as shown in <FIG>, the upper part of the baffle is further provided with a hollow convex column <NUM>, the hollow convex column <NUM> extending in the direction of the frame <NUM>, and the cavity of the hollow convex column <NUM> forms an air outlet <NUM>. The hollow convex column <NUM> can force the airflow to flow upward after being bent, that is, to form a vortex area at the upper part of the air duct <NUM>. The airflow can not only reach the top of the air duct <NUM>, but also flow out of the air duct <NUM> through the hollow convex column <NUM>, which ensures that the upper part of the air duct <NUM> can also be cooled by air, and can also form an air film on the baffle <NUM>.

Considering that when the air flow reaches the upper part of the air duct <NUM>, the wind pressure is relatively small. Therefore, the distance between the hollow convex column <NUM> and the top surface of the air duct <NUM> should not be set too long, which may cause the air pressure to be insufficient to push the airflow to the top of the air duct <NUM>. Preferably, the distance between the hollow convex column <NUM> and the top surface of the air duct <NUM> is d, wherein the height of the air duct <NUM> is h, and d/h is between <NUM>/<NUM> and <NUM>/<NUM>. In this way, an air film with better air pressure can be formed on the inner wall surface of the baffle <NUM>, and the air can also be sent to the top of the air duct <NUM>, which obtains a better air cooling effect and ensure that the temperature rise of the frame <NUM> is within a controllable range.

Wherein, air sent out by the fan <NUM> comprises a portion that flows into the air duct <NUM>, and another part flow into the burner <NUM>. That is, a portion of the air enters the burner <NUM> to participate in combustion, and another part enters the air duct <NUM> for air cooling the frame <NUM>, which prevents the frame <NUM> from being overheated.

In short, according to the gas device <NUM> of the embodiment of the present disclosure, by constructing an air duct <NUM> for air-cooling the frame <NUM> on the frame <NUM> and the baffle <NUM>, and the baffle <NUM> is provided with a plurality of air outlets <NUM> on the flow direction of the air duct <NUM>, forming an air film on the inner side of the baffle <NUM> block the flow of hot air toward the baffle <NUM>, improving the air cooling effect of the air in the air duct <NUM> on the frame <NUM>, effectively avoiding the conduction of high temperature to the outside of the frame <NUM>, and improving the service life of the components of the gas device <NUM>.

As shown in <FIG>, a plurality of steering portions <NUM> are formed on the baffle <NUM>, the steering portion <NUM> protrudes from inside to outside, and the air outlet <NUM> is formed on the steering portion <NUM>. Referring to the wind direction indicator arrow in <FIG>, the airflow flows from bottom to top along the air duct <NUM>, and after encountering the steering portion <NUM>, a portion of the airflow is led to the direction of the burner <NUM>, that is, it flows out from the air outlet <NUM> provided in the steering portion <NUM>. In other words, the steering portion <NUM> acts as a block for the airflow in the air duct <NUM>, a portion of the airflow is branched out from the air outlet <NUM>, forming an air film on the inner wall surface of the baffle <NUM>, preventing the hot airflow from flowing in the direction of the frame <NUM>.

In an alternative embodiment, as shown in <FIG>, the steering portion <NUM> comprises a first section <NUM> extending toward a sidewall of the frame, a second section <NUM> connected to the first section at one end and extending upward, wherein the air outlet <NUM> is formed on the first section <NUM>. Due to the blocking of the first section <NUM> of the steering portion <NUM>, the flow area of the air duct <NUM> is suddenly reduced, a portion of the airflow can flow out from the air outlet <NUM>, and another part of the airflow continues to flow upward, and flows out from the air outlet <NUM> of another steering portion <NUM>. In addition, the obliquely extending third section <NUM> can gradually increase the flow area of the air duct <NUM>, the airflow can flow upwards more smoothly.

The baffle is connected to a sidewall of the frame, the baffle comprises a heat insulation portion arranged obliquely with respect to a sidewall of the frame, one end of the heat insulation portion away from a sidewall of the frame bends outward to form a steering portion, and/or one end of the heat insulation portion closer to a sidewall of the frame bends inward to form a steering portion.

The baffle further comprises an air guide portion, one end of the air guide portion is connected to the frame, the other end of the air guide portion connected to the heat insulation portion, and the air inlet <NUM> of the air duct being provided guide portion, the air guide portion is enclosed with a sidewall of the frame to form a first air guide channel, and the air guide portion is provided with a first air outlet, the first air outlet communicates with the first air guide channel and faces the heat insulation portion.

As shown in <FIG> and <FIG>, the heat insulation portion <NUM> comprises a first heat insulation section <NUM> and a second heat insulation section <NUM>.

As shown in <FIG>, the first air outlet <NUM> faces the first heat insulation section <NUM>, the first heat insulation section <NUM> is enclosed with the frame <NUM> to form a second air guide channel <NUM>, the second air guide channel <NUM> communicates with the first air guide channel <NUM>, and the first heat insulation section <NUM> is provided with a second air outlet <NUM>, and the second air outlet <NUM> communicates with the second air guide channel <NUM>; and the second heat insulation section <NUM> towards the second heat insulation section <NUM>.

In this embodiment, as shown in <FIG> and <FIG>, the air blown from the first air outlet <NUM> can be blown to the first heat insulation section <NUM>, and while cooling the first heat insulation section <NUM>, it can also form a layer of air film on the first heat insulation section <NUM>, reducing the temperature of the first heat insulation section <NUM>. A second air guide channel <NUM> is arranged between the first heat insulation section <NUM> and the frame <NUM>, and the air flowing in the second air guide channel <NUM> can cool down the first heat insulation section <NUM> again, further reducing the temperature of the first heat insulation section <NUM>. There is a second air outlet <NUM> communicated with the second air guide channel <NUM> on the first heat insulation section <NUM>. The gas in the second air guide channel <NUM> can be blown to the second heat insulation section <NUM> by the second air outlet <NUM>. While cooling the second heat insulation section <NUM>, a layer of air film is formed on the second heat insulation section <NUM>, reducing the temperature of the second heat insulation section <NUM>.

The heat insulation portion <NUM> comprises at least two insulation sections, namely a first heat insulation section <NUM> and a second heat insulation section <NUM>, which further reduces the temperature of the heat insulation portion <NUM> and improves the cooling effect of the heat insulation portion <NUM>.

As shown in <FIG> and <FIG>, the lower part of the first heat insulation section <NUM> is connected to the air guide portion <NUM> and is arranged opposite to the first air outlet <NUM>, and the upper part of the first heat insulation section is connected to the second heat insulation section <NUM> and is arranged with the second air outlet <NUM>. The top of first heat insulation section <NUM> is bent to connect with the frame.

As shown in <FIG> and <FIG>, the first heat insulation section <NUM> is connected to the second heat insulation section <NUM>, and one end of the second heat insulation section <NUM> connected to the first heat insulation section <NUM> is in contact with the frame <NUM>.

In this embodiment, the second heat insulation section <NUM> is in contact with the frame <NUM>, the air in the second air guide channel <NUM> will not continue to flow when it flows to the second air outlet <NUM>, but will be blown to the second heat insulation section <NUM> by the second air outlet <NUM>. In this way, the diversion of the air in the second air guide channel <NUM> is realized, the utilization rate of the air in the second air guide channel <NUM> is improved, and the heat dissipation efficiency of the second heat insulation section <NUM> is improved.

As shown in <FIG>, the plurality of heat insulation sub-sections comprise adjacent insulation sub-sections, and one of the adjacent insulation sub-sections closer to the air guide portion <NUM> is provided with a third air outlet <NUM>, the third air outlet <NUM> towards another one of the adjacent insulation sub-sections.

In this embodiment, the first heat insulation section <NUM> is provided with a plurality of heat insulation sub-sections, and the first air outlet <NUM> faces the insulation sub-section connected to the air guide portion <NUM>; realizing the cooling of the insulation sub-section. The second air outlet <NUM> is arranged on the insulation sub-section connected to the second heat insulation section <NUM>, the air in the second air guide channel <NUM> can be blown to the second heat insulation section <NUM>, cooling the second heat insulation section <NUM>. All the insulation sub-sections are connected in sequence, in the adjacent insulation sub-sections, the insulation sub-section closer to the air guide portion <NUM> is provided with a third air outlet <NUM>. The air in the second air guide channel <NUM> is blown to the insulation sub-section closer to the second heat insulation section <NUM> through the third air outlet <NUM> to cool the insulation sub-section closer to the second heat insulation section <NUM>.

As shown in <FIG>, the heat insulation portion <NUM> comprises four insulation sections, that is, the first heat insulation section <NUM> comprises three insulation sub-sections, which are respectively the first insulation sub-section <NUM>, the second insulation sub-section <NUM> and the third insulation sub-section <NUM>. The first side of the first insulation sub-section <NUM> is connected to the air guide portion <NUM>, and another side is connected to one side of the second insulation sub-section <NUM>, another side of the second insulation sub-section <NUM> is connected to one side of the third insulation sub-section <NUM>, and another side of the third insulation sub-section <NUM> is connected to the second heat insulation section <NUM>.

The first insulation sub-section <NUM> and the second insulation sub-section <NUM> are arranged adjacent to each other, and between the first insulation sub-section <NUM> and the second insulation sub-section <NUM>, the first insulation sub-section <NUM> is closer to the air guide portion <NUM>. Therefore, a third air outlet <NUM> is arranged on the first insulation sub-section <NUM>, and the third air outlet <NUM> on the first insulation sub-section <NUM> is arranged towards the second insulation sub-section <NUM>.

The second insulation sub-section <NUM> and the third insulation sub-section <NUM> are located adjacent to each other, and between the second insulation sub-section <NUM> and the third insulation sub-section <NUM>, the second insulation sub-section <NUM> is closer to the air guide portion <NUM>. Therefore, the third air outlet <NUM> is further arranged on the second insulation sub-section <NUM>, and the third air outlet <NUM> on the second heat insulation section <NUM> is arranged towards the third insulation sub-section <NUM>.

As shown in <FIG>, the heat insulation portion <NUM> comprises five insulation sections, that is, the first heat insulation section <NUM> comprises four insulation sub-sections, which are respectively the first insulation sub-section <NUM>, the second insulation sub-section <NUM>, the third insulation sub-section <NUM>, and the fourth insulation sub-section <NUM>. The first side of the first insulation sub-section <NUM> is connected to the air guide portion <NUM>, another side is connected to one side of the second insulation sub-section <NUM>, and another side of the second insulation sub-section <NUM> is connected to the third insulation sub-section <NUM>, another side of the third insulation sub-section <NUM> is connected to one side of the forth insulation sub-section <NUM>, and another side of the forth insulation sub-section <NUM> is connected to the second heat insulation section <NUM>.

The first insulation sub-section <NUM> and the second insulation sub-section <NUM> are arranged adjacent to each other, and between the first insulation sub-section <NUM> and the second insulation sub-section <NUM>, the first insulation sub-section <NUM> is closer to the air guide portion <NUM>. Therefore, the first insulation sub-section <NUM> is provided with a third air outlet <NUM>, and the third air outlet <NUM> on the first insulation sub-section <NUM> is arranged towards the second insulation sub-section <NUM>.

The second insulation sub-section <NUM> and the third insulation sub-section <NUM> are arranged adjacent to each other, and between the second insulation sub-section <NUM> and the third insulation sub-section <NUM>, the second insulation sub-section <NUM> is closer to the air guide portion <NUM>. Therefore, the second insulation sub-section <NUM> is further provided with a third air outlet <NUM>, and the third air outlet <NUM> on the second insulation sub-section <NUM> is arranged towards the third insulation sub-section <NUM>.

The third insulation sub-section <NUM> and the forth insulation sub-section <NUM> are arranged adjacent to each other, and between the third insulation sub-section <NUM> and the forth insulation sub-section <NUM>, the third insulation sub-section <NUM> is closer to the air guide portion <NUM>. Therefore, the third insulation sub-section <NUM> is further provided with a third air outlet <NUM>, and the third air outlet <NUM> on the third insulation sub-section <NUM> is arranged towards the fourth insulation sub-section <NUM>.

As shown in <FIG>, a height of the air inlet <NUM> is lower than a burning surface of the burner in vertical direction.

Above the top of the burner <NUM>, high temperature flue gas or high temperature air will be generated due to the combustion of the flame. Set the air inlet <NUM> below the burning surface of the burner <NUM> to prevent the high temperature flue gas or high temperature air from entering the first air guide channel <NUM>, the temperature of the gas in the first air guide channel <NUM> is lowered, and the thermal insulation effect of the baffle <NUM> and the air film is improved.

An angle between the heat insulation portion <NUM> and a sidewall of the frame is at least <NUM> degrees and not more than <NUM> degrees.

In this embodiment, the angle between the sidewall of frame and the heat insulation portion <NUM> is <NUM> degrees to <NUM> degrees. The gas flowing out from the first air outlet <NUM> can evenly form a layer of heat insulating gas film on the heat insulation portion <NUM>, reducing the temperature of the heat insulation portion <NUM>.

As shown in <FIG>, a plurality of first air outlet <NUM> is arranged, and the plurality of first air outlet <NUM> is evenly arranged along the length direction or width direction of the frame. The air outlet direction of the first air outlet <NUM> is the same as the direction of the flue gas flow, and the air outlet direction of the second air outlet <NUM> and the third air outlet <NUM> is the same as the air outlet direction of the first air outlet <NUM>.

As shown in <FIG>, a plurality of second air outlet <NUM> is arranged, and the plurality of second air outlet <NUM> is evenly arranged along the length direction or width direction of the frame. The angle between the air outlet direction of the second air outlet <NUM> and the insulation section corresponding to the second air outlet <NUM> is <NUM> degrees to <NUM> degrees.

A plurality of third air outlet <NUM> is arranged, and the plurality of third air outlet <NUM> is evenly arranged along the length direction or width direction of the frame. The angle between the air outlet direction of third air outlet <NUM> and the insulation section corresponding to third air outlet <NUM> is <NUM> degrees to <NUM> degrees.

As shown in <FIG>, the burner <NUM> is an atmospheric type burner, and comprises a fire exhaust assembly arranged in parallel with the heat insulation portion <NUM>. In this embodiment, the burner <NUM> belongs to the atmospheric type burner, the burner <NUM> comprises a fire exhaust assembly arranged in parallel with the heat insulation portion <NUM>, the heat insulation portion <NUM> can effectively prevent the heat generated by the fire exhaust assembly from being transferred to the frame, further improving the thermal insulation effect of the heat insulation portion <NUM>.

As shown in <FIG> and <FIG>, a plurality of heat insulation portions <NUM> is arranged, and the heat insulation portions <NUM> are being arranged on two sides of the burner <NUM> or around the burner <NUM>.

In this embodiment, the burner <NUM> is arranged on the inner side of the frame, and the heat insulation portion <NUM> is being arranged on two sides of the burner <NUM>, or around the burner <NUM>, which prevents the heat generated by the burner <NUM> from being transferred to the frame to cause aging or deformation of the frame, and can reduce the heat loss inside the frame, and improve the heating efficiency of the burner <NUM>.

As shown in <FIG>, the heat insulation portion <NUM> is located above the burner <NUM>, and the corresponding height h above the combustion chamber cavity is at least <NUM>.

In this embodiment, set a height of the heat insulation portion <NUM> to be <NUM> to <NUM> higher than the top of the burner <NUM> to ensure that the heat insulation portion <NUM> can effectively insulate the heat generated by the burner <NUM>.

The height of the bottom end of the baffle <NUM> is lower than or equal to the height of the top surface of the burner <NUM>, which covers the burning part of the burner for thermal insulation.

The height of the baffle <NUM> is determined according to the height of the combustion chamber in the gas device <NUM>.

The gas device <NUM> further comprises a heat exchanger <NUM>, and the heat exchanger <NUM> is arranged above the burner <NUM>, and the water in the heat exchanger <NUM> can exchange heat with the high-temperature gas in the combustion chamber.

The gas device <NUM> further comprises a casing, the gas device <NUM> is arranged in the casing, an air inlet is arranged on the casing, and a fan is arranged at the air inlet to feed air into the casing, and the air is used for burning the burner and cooling the gas device <NUM>.

A gas device, comprising a frame <NUM>, a burner, a frame; and a baffle <NUM>, the burner is arranged in the frame <NUM>, the baffle <NUM> is connected to a sidewall of the frame <NUM>, the baffle <NUM> comprises a first heat insulation portion arranged obliquely with respect to a sidewall of the frame <NUM>, and the first heat insulation portion <NUM> spaced apart from at least a portion of an inner wall of the frame <NUM> to form a cooling gap.

In this embodiment, by setting the first heat insulation portion <NUM> on the inner side of the frame <NUM>, and setting a cooling gap between the first heat insulation portion <NUM> and the frame <NUM>, the heat transferred from the inside of the frame <NUM> to the frame <NUM> can be reduced, reducing the temperature of the frame <NUM>, reducing the impact of the high temperature generated by the burner on the frame <NUM> and other sheet metal components, extending the service life of the frame <NUM> and other sheet metal components. A cooling gap is arranged between the first heat insulation portion <NUM> and at least a portion of the inner wall of the frame <NUM>. If air flows through the cooling gap, the temperature of the first heat insulation portion <NUM> can be lowered, and the heat transferred from the inside of the frame <NUM> to the frame <NUM> through the first heat insulation portion <NUM> can be further reduced.

As shown in <FIG>, one end of the first heat insulation portion <NUM> away from a sidewall of the frame <NUM> is folded outward to form a steering portion, and/or one end of the first heat insulation portion <NUM> closer to a sidewall of the frame <NUM> is folded inward to form a steering portion, at least one of the steering portions is provided with an air outlet.

In this embodiment, the air is blown out from the air outlet after passing through the cooling gap, and blows to the first heat insulation portion <NUM>. While realizing the cooling of the first heat insulation portion <NUM>, a layer of heat insulating gas film can also be formed on the surface of the first heat insulation portion <NUM>. The heat insulating gas film can reduce the heat transferred from the inside of the frame <NUM> to the first heat insulation portion <NUM>, further reduce the temperature of the first heat insulation portion <NUM>, reducing the heat transferred from the inside of the frame <NUM> to the frame <NUM> through the first heat insulation portion <NUM>, reducing the heat loss inside the frame <NUM>, and improving the heating efficiency of the burner.

A top end of the first heat insulation portion <NUM> further comprises a second heat insulation portion <NUM> arranged parallel to a sidewall of the frame <NUM>.

In this embodiment, by setting the second heat insulation portion <NUM>, the thermal insulation range of the baffle <NUM> is extended, and the thermal insulation effect of the baffle <NUM> is further improved.

A gap between the second heat insulation portion <NUM> and a sidewall of the frame <NUM> is larger than or equal to a gap between the first heat insulation portion <NUM> and a sidewall of the frame <NUM>. One end away from the sidewall of the frame <NUM> bends outward to form a steering portion, and/or one end of the heat insulation portion <NUM> closer to the sidewall of the frame <NUM> bends inward to form a steering portion, and an air outlet is provided on the steering portion.

As shown in <FIG> and <FIG>, the heat insulation portion <NUM> comprises: a first heat insulation section <NUM> and a second heat insulation section <NUM>, wherein the first air outlet <NUM> faces the first heat insulation section <NUM>, the first heat insulation section <NUM> is enclosed with the frame <NUM> to form a second air guide channel <NUM>, the second air guide channel <NUM> communicates with the first air guide channel <NUM>, and the first heat insulation section <NUM> is provided with a second air outlet <NUM>, and the second air outlet <NUM> communicates with the second air guide channel <NUM>; and the second heat insulation section <NUM> towards the second heat insulation section <NUM>.

The heat insulation portion <NUM> comprises at least two insulation sections, that is, a first heat insulation section <NUM> and a second heat insulation section <NUM>, which further reduces the temperature of the heat insulation portion <NUM> and improves the cooling effect of the heat insulation portion <NUM>.

As shown in <FIG> and <FIG>, the first heat insulation section <NUM> comprises a plurality of heat insulation sub-sections, and the plurality of heat insulation sub-sections are connected in sequence, one of the plurality of heat insulation sub-sections is connected to the air guide portion <NUM> and arranged opposite to the first air outlet <NUM>, and another one of the plurality of heat insulation sub-sections is connected to the second heat insulation section <NUM>, and is provided with the second air outlet <NUM>, wherein the plurality of heat insulation sub-sections comprise adjacent insulation sub-sections, and one of the adjacent insulation sub-sections closer to the air guide portion <NUM> is provided with a third air outlet <NUM>, the third air outlet <NUM> towards another one of the adjacent insulation sub-sections.

As shown in <FIG>, the heat insulation portion <NUM> is arranged obliquely relative to the sidewall of the frame <NUM>.

In this embodiment, the extension direction of the heat insulation portion <NUM> is at a certain angle with the sidewall of the frame <NUM>, the gas blown out of the first air outlet <NUM> will exert a certain pressure on the heat insulation portion <NUM> while moving along the heat insulation portion <NUM>, forming a heat insulating gas film on the surface of the heat insulation portion <NUM>. The heat insulating gas film can slow down the speed of the air inside the frame transferring heat to the heat insulation portion <NUM>, reducing the temperature of the heat insulation portion <NUM>.

An angle between the heat insulation portion <NUM> and a sidewall of the frame <NUM> is at least <NUM> degrees and not more than <NUM> degrees.

As shown in <FIG>, a plurality of first air outlet <NUM> is arranged, and the plurality of first air outlet <NUM> is evenly arranged along the length direction or width direction of the frame. The air outlet direction of the first air outlet <NUM> is the vertical direction, and the air outlet direction of the second air outlet <NUM> and the third air outlet <NUM> is the same as the air outlet direction of the first air outlet <NUM>.

As shown in <FIG> and <FIG>, a plurality of heat insulation portions <NUM> is arranged, and the heat insulation portions <NUM> are arranged on two sides of the burner <NUM> or around the burner <NUM>.

In this embodiment, the burner <NUM> is arranged on the inner side of the frame, and the heat insulation portion <NUM> is arranged on two sides of the burner <NUM>, or around the burner <NUM>, which prevents the heat generated by the burner <NUM> from being transferred to the frame to cause aging or deformation of the frame, and can reduce the heat loss inside the frame, and improve the heating efficiency of the burner <NUM>.

As shown in <FIG>, the height h of heat insulation portion <NUM> above the burner <NUM> is at least <NUM> and not more than <NUM>.

In this embodiment, set a height of the heat insulation portion <NUM> to be <NUM> to <NUM> higher than the top of the burner <NUM> to ensure that the heat insulation portion <NUM> can effectively insulate the heat generated by the burner <NUM> and avoid material waste due to the high height of the heat insulation portion <NUM>.

The height of the baffle <NUM> is <NUM> to <NUM>, and the height of the baffle <NUM> is determined according to the height of the combustion chamber in the gas device <NUM>.

The gas device <NUM> further comprises a casing, the gas device <NUM> is arranged in the casing, an air inlet <NUM> is arranged on the casing, and a fan is arranged at the air inlet <NUM> to feed air into the casing, and the air is used for burning the burner and cooling the gas device <NUM>.

In the description of the present disclosure, the term "plurality" refers to two or more, unless expressly limited otherwise, the orientation or position relationships indicated by the terms "upper", "lower" and the like are the orientation or position relationships based on what is shown in the drawings, are merely for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation and is constructed and operated in a specific orientation, and thus cannot be understood as the limitation of the present disclosure. The terms "connection", "mounting", "fixing" and the like should be understood in a broad sense. For example, "connection" may be a fixed connection, a removable connection or an integral connection; and may refer to direct connection and may also refer to indirect connection through an intermediary. A person of ordinary skills in the art could understand the specific meaning of the terms in the present disclosure according to specific situations.

Claim 1:
A gas device (<NUM>), comprising: a frame (<NUM>), defining a chamber (<NUM>); a burner (<NUM>), being arranged at a bottom side of the chamber (<NUM>); a fan (<NUM>), being arranged outside the frame (<NUM>), an outlet of the fan (<NUM>) facing the burner (<NUM>); and a baffle (<NUM>), being arranged at an inner side of the frame (<NUM>), and spaced apart from at least a portion of an inner wall of the frame (<NUM>) to form an air duct (<NUM>), wherein air sent out by the fan (<NUM>) comprises a portion that flows into the air duct (<NUM>), and another portion that flows into the burner (<NUM>), the baffle (<NUM>) being provided with a plurality of air outlets (<NUM>) along a flow direction of the air duct (<NUM>), and an air inlet (<NUM>) surface of the air duct (<NUM>) being lower than a burning surface of the burner (<NUM>); characterized in that a plurality of steering portions (<NUM>) are formed on the baffle (<NUM>), and protruding from inside to outside of the baffle (<NUM>), wherein the air outlet (<NUM>) is provided on the steering portion (<NUM>).