Electric control box heat dissipation structure and air conditioner
By setting the first air duct and the second air duct in the heat dissipation structure of the electronic control box and connecting it into a sealed channel connecting the air outlet and return air outlet of the air conditioner, the indoor cold air is used for heat dissipation, which solves the problem of poor heat dissipation effect of the electronic control box in extremely high temperature environments, and achieves better heat dissipation effect and stability.
Patent Information
- Application Number
- CN202420787270.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In extremely high temperature environments, the heat dissipation effect of the electronic control box is poor, resulting in excessive temperature of the electronic control components and affecting the operation of the air conditioner.
An electric control box heat dissipation structure is designed, by setting a first air duct and a second air duct at both ends of the radiator and connecting it into a sealed channel connecting the air outlet and return air outlet of the air conditioner, the indoor cooling air is used for heat dissipation.
It effectively improves the heat dissipation effect of the electronic control box, relies on indoor air heat dissipation, reduces the impact of outdoor temperature on the heat dissipation effect, and ensures the normal operation of the electronic control components.
Smart Images
Figure CN223024779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric vehicle air conditioners, in particular to a heat dissipation structure for an electric control box and an air conditioner. Background Art
[0002] With the rapid development of pure electric buses, air conditioners are sold all over the world along with the whole vehicle. However, due to different climate environments in different regions, air conditioners are facing severe environmental tests. In particular, the electric control components in the air conditioner electric control box need to operate normally within a suitable temperature range. For example, in extremely high temperature environments of 50 - 60 °C, the temperature inside the electric control box is very high, reaching the temperature point of the electric control components, which will cause the electric control components to stop working and affect the operation of the air conditioner.
[0003] Traditional electric control heat dissipation mainly adopts the following method: After the heat in the electric control box is conducted through the radiator, air cooling is carried out by using the convection of the natural wind through the heat dissipation holes on both sides of the electric control cavity and the outside.
[0004] In the process of implementing this application, the inventor found that there are at least the following problems in the prior art:
[0005] When the outdoor temperature is too high, the inlet air temperature of the radiator is high, and the natural wind cooling effect will be greatly affected, resulting in poor heat dissipation effect of the electric control box. Summary of the Utility Model
[0006] This application proposes a heat dissipation structure for an electric control box and an air conditioner, aiming to improve the heat dissipation effect of the electric control box.
[0007] In a first aspect, an embodiment of this application provides a heat dissipation structure for an electric control box, which is used for an air conditioner. The air conditioner includes an indoor air outlet and an indoor air return opening. The heat dissipation structure for the electric control box includes:
[0008] A radiator, arranged on one side of the electric control box, for dissipating heat from the electric control box;
[0009] An air duct assembly, including a first air duct and a second air duct. The first air duct and the second air duct are connected through the radiator. The first air duct is used to connect one end of the radiator with the indoor air return opening, and the second air duct is used to connect the other end of the radiator with the indoor air outlet;
[0010] A heat dissipation fan, for introducing indoor air from the indoor air return opening into the first air duct, the radiator, and the second air duct, and discharging it back into the room through the indoor air outlet.
[0011] In some embodiments, the radiator is formed with a heat dissipation cavity, and a plurality of heat dissipation fins are arranged in the heat dissipation cavity to dissipate heat from the electric control box. The plurality of heat dissipation fins are arranged in sequence along a first direction, and the plurality of heat dissipation fins divide the heat dissipation cavity into a plurality of heat dissipation channels. Both ends of the plurality of heat dissipation channels are respectively communicated with the first air duct and the second air duct.
[0012] In some embodiments, the first air duct and the second air duct are respectively arranged on opposite sides of the radiator. The first air duct and / or the second air duct includes a first channel and a second channel that are communicated with each other. The first channel is arranged on one side of the radiator and extends along the first direction. The first channel is communicated with the heat dissipation channel;
[0013] In the first air duct, the inlet of the first channel is docked with the indoor return air outlet through the second channel;
[0014] In the second air duct, the inlet of the first channel is docked with the indoor air outlet through the second channel.
[0015] In some embodiments, the first air duct further includes a third channel. The first channel is communicated with the third channel through the second channel, and the inlet of the second channel is docked with the indoor air outlet through the third channel.
[0016] In some embodiments, a heat insulation material is arranged on the outer side of the first air duct and / or the second air duct, and the heat insulation material wraps the first air duct and the second air duct.
[0017] In a second aspect, the present application further provides an air conditioner. The air conditioner includes the electric control box heat dissipation structure as described above, and further includes:
[0018] A housing, which forms an evaporation cavity;
[0019] An evaporator, which is arranged in the evaporation cavity to exchange heat with indoor air. The evaporator divides the evaporation cavity into a return air cavity and an air outlet cavity. The indoor air outlet is arranged in the air outlet cavity, and the indoor return air outlet is arranged in the return air cavity. The first air duct is communicated with the return air cavity, and the second air duct is communicated with the air outlet cavity.
[0020] In some embodiments, the housing further forms a compressor cavity. The air conditioner further includes an electric control box, and both the electric control box and the radiator are arranged in the compressor cavity.
[0021] In some embodiments, the compressor chamber and the evaporation chamber are separated by a partition board. The first channel and the second channel are disposed in the compressor chamber, and the third channel is disposed in the evaporation chamber. The third channel communicates with the return air chamber. The partition board is partially penetrated to communicate the third channel and the second channel of the first air duct, and to communicate the second channel of the second air duct with the air outlet chamber.
[0022] In some embodiments, heat dissipation holes are provided on the side wall of the compressor chamber to communicate the compressor chamber with the outside.
[0023] In some embodiments, the number of the evaporators is two. The two evaporators divide the evaporation chamber into a return air chamber and two air outlet chambers. The return air chamber is located between the two evaporators, and the two air outlet chambers are located on both sides of the return air chamber. The second air duct communicates with at least one of the air outlet chambers.
[0024] Compared with the prior art, the technical solution of the present application has at least the following technical effects:
[0025] In the heat dissipation structure of the electric control box provided in the present application, by respectively providing a first air duct and a second air duct at both ends of the radiator, and connecting the first air duct, the radiator and the second air duct into a sealed channel with both ends respectively communicating with the indoor air outlet and the indoor air return of the air conditioner, indoor cold air can flow in this sealed channel, thereby taking away the heat on the electric control box. In the technical solution of the present application, the indoor cold air enters the first air duct from the indoor air return, and then enters the radiator to take away the heat conducted from the electric control box to the radiator, so as to realize the heat dissipation of the electric control box, and then passes through the second channel and returns to the room from the indoor air outlet. In the technical solution of the present application, the heat dissipation of the electric control box depends on the indoor air, and the influence of the outdoor air on the heat dissipation effect of the electric control box is small, avoiding the situation that the heat dissipation effect of the electric control box is greatly reduced due to too high outdoor temperature, and the heat dissipation effect of the electric control box is better and more stable. Description of the Drawings
[0026] The following further describes the present invention in conjunction with the drawings and embodiments.
[0027] Figure 1 It is a schematic structural diagram of the air conditioner of the present application in an embodiment;
[0028] Figure 2 It is Figure 1 the top view of;
[0029] Figure 3 It is Figure 1 the schematic structural diagram of the heat dissipation structure of the electric control box in;
[0030] Reference numerals:
[0031]
[0032] Specific embodiments
[0033] For a better understanding of the technical solution of the present utility model, the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
[0034] It should be clear that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.
[0035] The terms used in the embodiments of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The singular forms of "a", "the" and "said" used in the embodiments of the present utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.
[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.
[0037] It should be understood that the term " / and" used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.
[0038] This application provides an air conditioner 100, and the air conditioner 100 can be applied to electric passenger vehicles. Of course, the air conditioner 100 can also be applied to rail transit vehicles.
[0039] When describing the air conditioner 100 in this embodiment, the orientation terms such as "up", "down", "top", "bottom", "left", "right", "front" and "back" are mainly based on the air conditioner 100 in the attached Figure 1The display orientation in [the figure] is described. Taking the positive direction of the Z-axis as "top" and "upper", the negative direction of the Z-axis as "bottom" and "lower", the positive direction of the X-axis as "right", the negative direction of the X-axis as "left", the positive direction of the Y-axis as "rear", and the negative direction of the Y-axis as "front", which does not form a limitation on the orientation of the air conditioner 100 in the actual application scenario.
[0040] Please refer to Figure 1 and Figure 2 In this embodiment, the air conditioner 100 includes a housing 110, an evaporator 122, and an indoor fan (or indoor-side fan); the housing 110 forms an evaporation chamber 111, and the evaporator 122 is disposed in the evaporation chamber 111 to exchange heat with indoor air. The evaporator 122 divides the evaporation chamber 111 into a return air chamber 111a and an air outlet chamber 111b. An indoor air outlet (or indoor-side air outlet) 111b1 is provided at the bottom of the air outlet chamber 111b, and an indoor air return port (or indoor-side air return port) 111a1 is provided at the bottom of the return air chamber 111a.
[0041] The indoor fan is disposed in the evaporation chamber 111. During the operation of the air conditioner 100, the indoor fan draws indoor (in-vehicle) air from the indoor air return port 111a1 into the return air chamber 111a. Then, the indoor (in-vehicle) air is cooled by the evaporator 122 and enters the air outlet chamber 111b, and then returns to the room (in the vehicle) from the indoor air outlet 111b1.
[0042] In this embodiment, the number of the evaporators 122 is two. The two evaporators 122 divide the evaporation chamber 111 into one return air chamber 111a and two air outlet chambers 111b. The return air chamber 111a is located between the two evaporators 122, and the two air outlet chambers 111b are located on both sides of the return air chamber 111a, specifically on the front and rear sides of the return air chamber 111a. The second air duct 132 is at least in communication with one of the air outlet chambers 111b.
[0043] In this embodiment, the evaporator 122 extends along the X-axis direction. A plurality of evaporation fans 123 arranged in sequence along the X-axis direction are provided in both of the two air outlet chambers 111b. The evaporation fans 123 are axial fans, and the axial direction of the evaporation fans 123 is the X-axis direction.
[0044] In this embodiment, the air conditioner 100 further includes a condenser and a plurality of condensing fans 124 disposed on one side of the condenser. The condensing fans 124 are used to drive the outdoor air to perform convective heat exchange with the condenser.
[0045] In this embodiment, the air conditioner 100 further includes a compressor 125. The housing 110 further forms a compressor chamber 111c. The compressor chamber 111c is provided on a side of the evaporation chamber 111 close to the condensation fan 124, specifically located on the left side of the evaporation chamber 111. The compressor 125 is disposed in the compressor chamber 111c.
[0046] In this embodiment, the side wall of the compressor chamber 111c is provided with heat dissipation holes 111c1 to communicate the compressor chamber 111c with the outside. By providing the heat dissipation holes 111c1 communicating with the outside on the side wall of the compressor chamber 111c, fresh air can continuously enter the compressor chamber 111c, which is beneficial to the heat dissipation of the compressor 125.
[0047] In this embodiment, the air conditioner 100 further includes an expansion valve. The compressor 125, the condenser, the expansion valve, and the evaporator 122 are sequentially connected through pipelines to form a circulation loop, and a refrigerant that can circulate is provided in the circulation loop. During the refrigeration process of the air conditioner 100, the low-pressure steam of the refrigerant in the circulation loop is sucked by the compressor 125 and compressed into high-pressure steam and then discharged to the condenser. The outdoor air sucked by the condensation fan 124 flows through the condenser, taking away the heat released by the refrigerant, causing the high-pressure refrigerant steam to condense into high-pressure liquid. Then, the high-pressure liquid is sprayed into the evaporator 122 after passing through the expansion valve and evaporates at the corresponding low pressure, absorbing the surrounding heat. At the same time, the evaporation fan 123 causes the indoor air to continuously enter the fins (or fins) of the evaporator 122 for heat exchange, and sends the cooled air after heat release to the indoor.
[0048] In this embodiment, the air conditioner 100 further includes an electric control box 126. The electric control box 126 is disposed in the compressor chamber 111c. By reserving a space for the electric control box 126 in the compressor chamber 111c, on the one hand, the space utilization rate inside the housing 110 can be improved, and on the other hand, the electric control box 126 can be prevented from blocking the indoor air inlet or the indoor air return opening 111a1, so as not to affect the cooling efficiency of the air conditioner 100.
[0049] The heat dissipation effect of the electronic control box 126 affects the normal operation of the air conditioner 100. When the temperature inside the electronic control box 126 is very high and reaches the temperature point of the electronic control components inside the electronic control box 126, the electronic control components will stop working, thus affecting the operation of the air conditioner 100. In the prior art, generally, a radiator 133 is provided to dissipate heat from the electronic control box 126. The electronic control cavity where the electronic control box 126 is located is communicated with the outside. The heat in the electronic control box 126 is conducted through the radiator 133, and the natural wind outside enters the electronic control cavity to cool the radiator 133 by air cooling. This heat dissipation method has the following disadvantages: when the outdoor temperature is relatively high, the inlet air temperature is high, and the cooling effect is not ideal, and the heat dissipation effect of the electronic control box 126 will be greatly reduced.
[0050] Based on the above technical problems, this embodiment proposes an electronic control box heat dissipation structure, which is applied to the air conditioner 100 to dissipate heat from the electronic control box 126 of the air conditioner 100.
[0051] Please refer to Figure 1 、 Figure 2 and Figure 3 In this embodiment, the electronic control box heat dissipation structure includes a radiator 133, a duct assembly, and a cooling fan; the radiator 133 is disposed on one side of the electronic control box 126. Specifically, the radiator 133 is disposed below the electronic control box 126, and the radiator 133 is used to dissipate heat from the electronic control box 126; the duct assembly includes a first duct 131 and a second duct 132. The first duct 131 and the second duct 132 are communicated through the radiator 133. The first duct 131 is used to connect one end of the radiator 133 to the indoor return air outlet 111a1, and the second duct 132 is used to connect the other end of the radiator 133 to the indoor air outlet 111b1; the cooling fan can be disposed in the first duct 131 and / or the second duct 132. The cooling fan is used to introduce indoor air from the indoor return air outlet 111a1 into the first duct 131, the radiator 133, and the second duct 132 in sequence, and discharge it back into the room through the indoor air outlet 111b1.
[0052] Please refer to Figure 1In the heat dissipation structure of the electric control box of the present application, by respectively setting the first air duct 131 and the second air duct 132 at both ends of the radiator 133, and connecting the first air duct 131, the radiator 133 and the second air duct 132 to form a sealed channel whose two ends are respectively connected to the indoor air outlet 111b1 and the indoor return air outlet 111a1 of the air conditioner 100, the indoor cold air can flow in the sealed channel, thereby taking away the heat on the electric control box 126. In the technical solution of the present application, the indoor cold air enters the first air duct 131 from the indoor return air outlet 111a1, and then enters the radiator 133 to take away the heat conducted from the electric control box 126 to the radiator 133, thereby achieving the heat dissipation of the electric control box 126, and then passes through the second channel 1312 and returns to the room from the indoor air outlet 111b1. In the technical solution of the present application, the heat dissipation of the electric control box 126 depends on the indoor air, and the outdoor air has little effect on the heat dissipation effect of the electric control box 126, thereby avoiding the situation where the heat dissipation effect of the electric control box 126 is greatly reduced due to the excessively high outdoor temperature. The heat dissipation effect of the electric control box 126 is better and more stable.
[0053] In this embodiment, a heat-insulating material is disposed outside the first air duct 131 and / or the second air duct 132, and the heat-insulating material wraps the first air duct 131 and the second air duct 132. By disposing the heat-insulating material outside the first air duct 131 and / or the second air duct 132, the influence of outdoor air on the heat dissipation effect of the electric control box 126 can be reduced.
[0054] In this embodiment, the radiator 133 forms a heat dissipation cavity, and a plurality of heat sinks are arranged in the heat dissipation cavity to dissipate heat for the electric control box 126. The plurality of heat sinks are arranged in sequence along a first direction, which is specifically the X-axis direction. The plurality of heat sinks divide the heat dissipation cavity into a plurality of heat dissipation channels, and both ends of the plurality of heat dissipation channels are connected to the first air duct 131 and the second air duct 132 respectively. During the heat dissipation process of the electric control box, the heat on the electric control box 126 is transferred to the heat sink, and the indoor cold air enters the first air duct 131 from the indoor return air port 111a1, and then enters the heat dissipation cavity to take away the heat on the heat sink, and passes through the second channel 1312 to merge with the indoor air cooled by the evaporator 122 in the evaporation cavity 111, and then is guided back to the room from the indoor air outlet 111b1. By arranging a plurality of heat sinks in the heat dissipation cavity, the conduction area between the radiator 133 and the electric control box 126 is increased, which is conducive to quickly exporting the heat in the electric control box 126.
[0055] See also Figure 2 and Figure 3, in this embodiment, the first air duct 131 and the second air duct 132 are respectively arranged on the front and rear sides of the radiator 133. The first air duct 131 and / or the second air duct 132 include a first channel 1311 and a second channel 1312 that are connected and communicate with each other. The first channel 1311 is arranged on one side of the radiator 133 and extends along the first direction, and the first channel 1311 communicates with the heat dissipation channel. In the first air duct 131, the inlet of the first channel 1311 is docked with the indoor return air outlet 111a1 through the second channel 1312. In the second air duct 132, the inlet of the first channel 1311 is docked with the indoor air outlet 111b1 through the second channel 1312.
[0056] Specifically, the inlet at the right end and the outlet at the left end of the second channel 1312 in the first air duct 131 are arranged in a staggered manner to dock the first channel 1311 of the first air duct 131 with the indoor return air outlet 111a1. The inlet at the left end and the outlet at the right end of the second channel 1312 in the second air duct 132 are arranged in a staggered manner to dock the first channel 1311 of the second air duct 132 with the indoor air outlet 111b1.
[0057] The first air duct 131 further includes a third channel 1313. The first channel 1311 communicates with the third channel 1313 through the second channel 1312. The inlet at the right end of the second channel 1312 of the first air duct 131 is docked with the indoor air outlet 111b1 through the third channel 1313.
[0058] Specifically, the shapes of the first channel 1311 and the third channel 1313 are both cuboids extending in the X-axis direction. The extension length of the first channel 1311 in the X-axis direction is the same as the extension length of the radiator 133 in the X-axis direction, and the extension height of the first channel 1311 in the Z-axis direction is the same as the extension height of the radiator 133 in the Z-axis direction. The rear end of the first channel 1311 of the first air duct 131 is docked with the front end of the radiator 133, and the front end of the first channel 1311 of the second air duct 132 is docked with the rear end of the radiator 133. The shape of the second channel 1312 is a cube or a cuboid extending in the Z-axis direction. The extension width of the second channel 1312 in the Y-axis direction is the same as the extension width of the first channel 1311 in the Y-axis direction. The extension height of the second channel 1312 in the Z-axis direction is greater than the extension height of the first channel 1311 in the Z-axis direction. The left side of the lower end of the second channel 1312 of the first air duct 131 or the second air duct 132 is docked with the right end of the first channel 1311, and the right side of the upper end of the second channel 1312 of the first air duct 131 is docked with the left end of the third channel 1313. Of course, due to the different internal structures of different types of air conditioners 100, for the convenience of installation, those skilled in the art can adjust the shapes and sizes of the first channel 1311, the second channel 1312, and the third channel 1313 according to the actual situation, and this application does not make any limitations in this regard.
[0059] In this embodiment, by making the first air duct 131 and / or the second air duct 132 composed of a plurality of channels (the first channel 1311 / the second channel 1312 / the third channel 1313) spliced together, the installation convenience of the electric control box heat dissipation structure in the air conditioner 100 can be improved.
[0060] In this embodiment, the compressor chamber 111c and the evaporation chamber 111 are separated by a partition 121. The first channel 1311 and the second channel 1312 are arranged in the compressor chamber 111c, and the third channel 1313 is arranged in the evaporation chamber 111. The third channel 1313 is communicated with the return air chamber 111a. The partition 121 partially penetrates to communicate the third channel 1313 and the second channel 1312 of the first air duct 131, and to communicate the second channel 1312 of the second air duct 132 with the air outlet chamber 111b.
[0061] Specifically, a first through hole and a second through hole are formed in the partition plate 121. Among them, the first through hole is provided between the return air cavity 111a and the second channel 1312 of the first air duct 131. The right end of the second channel 1312 of the first air duct 131 is docked with the left side of the first through hole. The third channel 1313 is arranged in the evaporation cavity 111. The left end of the third channel 1313 is docked with the right side of the first through hole, and the right end of the third channel 1313 is communicated with the return air cavity 111a. The second through hole communicates the air outlet cavity 111b with the compressor cavity 111c, and the right end of the second channel 1312 of the second air duct 132 is docked with the second through hole.
[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An electric control box heat dissipation structure, used for an air conditioner, the air conditioner comprising an indoor air outlet and an indoor air return outlet, characterized in that: The heat dissipation structure of the electric control box includes: A radiator, disposed on one side of the electric control box, for dissipating heat from the electric control box; An air duct assembly, comprising a first air duct and a second air duct, wherein the first air duct and the second air duct are connected through the radiator, the first air duct is used to connect one end of the radiator with the indoor return air outlet, and the second air duct is used to connect the other end of the radiator with the indoor air outlet; The heat dissipation fan is used to introduce indoor air from the indoor return air outlet into the first air duct, the radiator and the second air duct, and discharge it back into the room through the indoor air outlet.
2. The heat dissipation structure of the electric control box according to claim 1, characterized in that: The radiator forms a heat dissipation cavity, in which a plurality of heat dissipation fins are arranged to dissipate heat from the electric control box. The plurality of heat dissipation fins are arranged in sequence along a first direction, and the plurality of heat dissipation fins divide the heat dissipation cavity into a plurality of heat dissipation channels, and both ends of the plurality of heat dissipation channels are connected to the first air duct and the second air duct respectively.
3. The heat dissipation structure of the electric control box according to claim 2, characterized in that: The first air duct and the second air duct are respectively arranged on opposite sides of the radiator, the first air duct and / or the second air duct include a first channel and a second channel that are connected, the first channel is arranged on one side of the radiator and extends along the first direction, and the first channel is connected to the heat dissipation channel; In the first air duct, the inlet of the first channel is connected to the indoor return air outlet through the second channel; In the second air duct, the inlet of the first channel is connected to the indoor air outlet through the second channel.
4. The heat dissipation structure of the electric control box according to claim 3, characterized in that: The first air duct also includes a third channel, the first channel is connected to the third channel through the second channel, and the inlet of the second channel is connected to the indoor air outlet through the third channel.
5. The heat dissipation structure of the electric control box according to claim 1, characterized in that: A heat-insulating material is disposed on the outer side of the first air duct and / or the second air duct, and the heat-insulating material wraps the first air duct and the second air duct.
6. An air conditioner, characterized in that: The heat dissipation structure of the electric control box according to any one of claims 1 to 5 further comprises: A shell body, forming an evaporation chamber; The evaporator is arranged in the evaporation chamber to exchange heat for indoor air. The evaporator divides the evaporation chamber into a return air chamber and an air outlet chamber. The indoor air outlet is arranged in the air outlet chamber, and the indoor return air outlet is arranged in the return air chamber. The first air duct is connected to the return air chamber, and the second air duct is connected to the air outlet chamber.
7. An air conditioner, characterized in that: The heat dissipation structure of the electric control box as claimed in claim 4 further comprises: A shell is formed with an evaporation chamber and a compressor chamber, and the radiator is arranged in the compressor chamber; An electric control box, arranged in the compressor cavity; The evaporator is arranged in the evaporation chamber to exchange heat for indoor air. The evaporator divides the evaporation chamber into a return air chamber and an air outlet chamber. The indoor air outlet is arranged in the air outlet chamber, and the indoor return air outlet is arranged in the return air chamber. The first air duct is connected to the return air chamber, and the second air duct is connected to the air outlet chamber.
8. The air conditioner according to claim 7, characterized in that: The compressor chamber is separated from the evaporation chamber by a partition, the first channel and the second channel are arranged in the compressor chamber, the third channel is arranged in the evaporation chamber, the third channel is connected with the return air chamber, and the partition is partially penetrated to connect the third channel and the second channel of the first air duct, and to connect the second channel of the second air duct with the air outlet chamber.
9. The air conditioner according to claim 7, characterized in that: The side wall of the compressor cavity is provided with a heat dissipation hole to connect the compressor cavity with the outdoors.
10. The air conditioner according to any one of claims 6 to 9, characterized in that: There are two evaporators, and the two evaporation chambers divide the evaporation chamber into a return air chamber and two outlet air chambers. The return air chamber is located between the two evaporators, and the two outlet air chambers are located on both sides of the return air chamber. The second air duct is connected to at least one of the outlet air chambers.