Electric appliance box and air conditioner

Abstract

The utility model discloses an electric appliance box and an air conditioner. The electrical box comprises an electrical box body, a heat absorption part and a heat exchange tube. The heat absorption part is arranged in the electric appliance box body. And the heat absorption part comprises a heat absorption shell and a fan. The heat absorption shell is provided with a heat absorption channel. The first end of the heat absorption channel is provided with an air inlet, and the second end is provided with an air outlet. The fan is configured to drive air in the electric appliance box body to enter the heat absorption channel from the air inlet and flow along the heat absorption channel. The heat exchange pipe is adjacent to the heat absorption part, and a heat exchange medium circulates in the heat exchange pipe and absorbs heat of air in the heat absorption channel. According to the embodiment of the invention, the heat dissipation performance of the electrical box is improved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an electric appliance box and an air conditioner. Background Art

[0002] Existing outdoor air conditioners operate outdoors for a long time. In some areas, the outdoor temperature can reach as high as 52°C, and even the local temperature can reach 60°C. When the unit operates in a high-temperature environment, the heat dissipation capacity of the components in the electric appliance box decreases, and the surface temperature rise of the components intensifies, which will lead to a decrease in the reliability of the unit or even failure. Therefore, how to improve the heat dissipation performance of the electric appliance box is an urgent problem to be solved.

[0003] It should be noted here that the statements in this background art section only provide background art related to this application and do not necessarily constitute prior art. Summary of the Utility Model

[0004] This application provides an electric appliance box and an air conditioner to improve the heat dissipation performance of the electric appliance box.

[0005] In a first aspect of this application, an electric appliance box is provided, including:

[0006] The electric appliance box body;

[0007] A heat absorption part, which is arranged inside the electric appliance box body, and the heat absorption part includes a heat absorption housing and a fan. The heat absorption housing has a heat absorption channel. The first end of the heat absorption channel has an air inlet, and the second end of the heat absorption channel has an air outlet. The fan is configured to drive the air inside the electric appliance box body to enter the heat absorption channel from the air inlet and flow along the heat absorption channel; and

[0008] A heat exchange tube, which is arranged adjacent to the heat absorption part and has a heat exchange medium flowing inside. The heat exchange medium absorbs the heat of the air in the heat absorption channel.

[0009] In some embodiments, the heat absorption channel is configured to extend in the height direction of the electric appliance box body, and the first end is higher than the second end so that the air inside the electric appliance box body flows downward along the heat absorption channel under the drive of the fan.

[0010] In some embodiments, the heat exchange tubes are distributed in the extending direction of the heat absorption channel.

[0011] In some embodiments, the flow direction of the heat exchange medium in the heat exchange tube is opposite to the flow direction of the air in the heat absorption channel.

[0012] In some embodiments, the fan is arranged inside the heat absorption channel.

[0013] In some embodiments, in the extending direction of the heat absorption channel, the fan is arranged at a position close to the air inlet.

[0014] In some embodiments, the blower is disposed outside the heat absorption channel.

[0015] In some embodiments, the heat absorption part further includes a plurality of heat absorption fins disposed inside the heat absorption housing, and gaps between the plurality of heat absorption fins form a plurality of heat absorption channels.

[0016] In some embodiments, the electrical box further includes a heat dissipation part, the heat dissipation part is disposed inside the electrical box body and is in contact heat exchange with heat dissipation components inside the electrical box body. The heat absorption part, the heat exchange tube and the heat dissipation part are stacked in sequence in the thickness direction, the heat exchange tube is disposed between the heat absorption part and the heat dissipation part, and the heat dissipation part transfers the heat dissipated by the heat dissipation components to the heat exchange tube.

[0017] In some embodiments, a first receiving groove is disposed on the wall surface of the heat absorption housing in contact with the heat exchange tube, and a first surface of the heat exchange tube in the thickness direction is clamped in the first receiving groove; and / or, the heat dissipation part includes a heat dissipation plate, and a second receiving groove is disposed on the wall surface of the heat dissipation plate in contact with the heat exchange tube, and a second surface of the heat exchange tube in the thickness direction is clamped in the second receiving groove.

[0018] In some embodiments, the heat absorption part and the heat dissipation part clamp the heat exchange tube in the middle. The electrical box further includes a separation part disposed between the heat absorption part and the heat dissipation part. The separation part extends in the thickness direction and has a gap between the heat absorption part and the heat dissipation part.

[0019] In some embodiments, the electrical box further includes a PCB board, and the heat dissipation part is in contact with heat dissipation components on the PCB board.

[0020] In some embodiments, the electrical box body is enclosed.

[0021] The first aspect of the present application provides an air conditioner, including an outdoor unit housing and the above electrical box, and the electrical box is disposed inside the outdoor unit housing.

[0022] In some embodiments, the air conditioner further includes a partition board, an outdoor heat exchange blower and an outdoor heat exchanger. The partition board divides the inner cavity of the outdoor unit housing into a first cavity and a second cavity in the width direction. The outdoor heat exchange blower and the outdoor heat exchanger are disposed in the first cavity, the electrical box is disposed in the second cavity, and the first cavity and the second cavity are isolated from each other.

[0023] Based on the technical solution provided by this application, the electrical box includes an electrical box body, a heat absorption part, and a heat exchange tube. The heat absorption part is arranged inside the electrical box body. And the heat absorption part includes a heat absorption housing and a fan. The heat absorption housing has a heat absorption channel. The first end of the heat absorption channel has an air inlet, and the second end of the heat absorption channel has an air outlet. The fan is configured to drive the air inside the electrical box body to enter the heat absorption channel from the air inlet and flow along the heat absorption channel. The heat exchange tube is arranged adjacent to the heat absorption part and a heat exchange medium flows through the heat exchange tube, and the heat exchange medium absorbs the heat of the air in the heat absorption channel. In the electrical box according to the embodiment of the present application, by arranging a heat absorption part inside the electrical box body, the heat absorption part uses the fan to suck the air inside the electrical box body into the heat absorption housing and make the air flow along the heat absorption channel of the heat absorption housing. Moreover, during the flow of the air, heat exchange occurs with the heat exchange medium in the heat exchange tube. The heat absorption channel guides the flow of the air, so that the flow direction of the air is consistent. Therefore, during the flow process, heat exchange with the heat exchange medium can be achieved throughout the process to cool the air, realizing the functions of dissipating heat and lowering the temperature of the air inside the electrical box body. Moreover, this temperature reduction does not depend on the outside world, and the electrical box itself can achieve temperature reduction, thereby improving the heat dissipation performance of the electrical box.

[0024] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0026] Figure 1 It is a schematic exploded view of the internal structure of the electrical box according to some embodiments of the present application.

[0027] Figure 2 It is a front view structural schematic diagram of the internal structure of the electrical box according to some embodiments of the present application.

[0028] Figure 3 It is a side view structural schematic diagram of the internal structure of the electrical box according to some embodiments of the present application.

[0029] Figure 4 It is a top view structural schematic diagram of the internal structure of the electrical box according to some embodiments of the present application.

[0030] Figure 5 It is a side view structural schematic diagram of the heat absorption part of the electrical box according to some embodiments of the present application.

[0031] Figure 6 is Figure 5 a schematic diagram of the air flow direction inside the heat absorption part shown.

[0032] Figure 7 is Figure 5 a top - view structural schematic diagram of the heat - absorbing part shown.

[0033] Figure 8 is a structural schematic diagram of an outdoor unit of an air conditioner according to some embodiments of the present application.

[0034] Figure 9 is Figure 8 a top - view structural schematic diagram of the outdoor unit of the air conditioner shown. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0036] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, and corresponding interpretations are made for the spatial relative descriptions used here.

[0038] In the related art, the outdoor unit of an air conditioner includes an outdoor unit housing and a partition disposed inside the outdoor unit housing. The partition divides the outdoor unit housing into a first chamber and a second chamber on the left and right sides. The outdoor fan and the outdoor heat exchanger are disposed in the first chamber, and the electrical box is disposed in the second chamber. Since the components in the electrical box have a relatively fast temperature rise, in order to dissipate heat from the electrical box, ventilation holes are usually formed in the partition to utilize the air pressure in the first chamber to generate air flow, thereby taking away the heat inside the electrical box located in the second chamber.

[0039] The inventor found during the research process that since the outdoor temperature at which the outdoor unit of the air conditioner operates is relatively high, for example, the ambient temperature is 52 °C, then the temperature of the air can reach 60 °C or even higher after passing through the condenser. Therefore, the temperature is even higher when flowing into the electrical box through the ventilation holes in the partition, which further leads to poor heat dissipation of the electrical box, resulting in an increase in the failure rate of the unit.

[0040] Based on the above findings, the present application proposes a self-cooling electrical box. The self-cooling electrical box absorbs heat from the high-temperature air inside the electrical box by providing a heat absorption part inside the electrical box to achieve self-heat dissipation, so that the electrical box can still operate normally at high temperatures, greatly improving the operation reliability of the unit.

[0041] Next, refer to Figures 1 to 9 Some embodiments of the electrical box of the present application and the air conditioner including the electrical box will be described in detail.

[0042] Refer to Figures 1 to 3, The electrical box 100 of some embodiments of the present application includes an electrical box body, a heat absorption part 10, and a heat exchange tube 20. The heat absorption part 10 is arranged inside the electrical box body. And the heat absorption part 10 includes a heat absorption housing 11 and a fan 12. The heat absorption housing 11 has a heat absorption channel. The first end of the heat absorption channel has an air inlet, and the second end of the heat absorption channel has an air outlet. The fan 12 is configured to drive the air inside the electrical box body to enter the heat absorption channel from the air inlet and flow along the heat absorption channel. The heat exchange tube 20 is arranged adjacent to the heat absorption part 10 and a heat exchange medium flows through the heat exchange tube 20, and the heat exchange medium absorbs the heat of the air in the heat absorption channel.

[0043] In the electrical box 100 of the embodiments of the present application, by arranging the heat absorption part 10 inside the electrical box body, the heat absorption part 10 uses the fan 12 to suck the air inside the electrical box body into the heat absorption housing 11 and make the air flow along the heat absorption channel of the heat absorption housing 11. Moreover, during the flow of the air, heat exchange occurs with the heat exchange medium in the heat exchange tube 20, and the heat absorption channel guides the flow of the air, so that the flow direction of the air is consistent. Therefore, during the flow process, heat exchange with the heat exchange medium can be achieved throughout the process to cool the air, realizing the functions of dissipating heat and lowering the temperature of the air inside the electrical box body. Moreover, this cooling does not need to rely on the outside world, and the electrical box itself can achieve cooling, thereby improving the heat dissipation performance of the electrical box.

[0044] In some embodiments, the heat absorption channel is configured to extend in the height direction Z of the electrical box body. The first end is higher than the second end so that the air inside the electrical box body flows downward along the heat absorption channel under the drive of the fan. The first end is higher than the second end, so that the air inlet is arranged at a higher position of the electrical box body, and the hot air will gather at the high place of the electrical box body. Therefore, a large amount of hot air can be sucked into the air inlet under the drive of the fan and blown downward along the height direction Z, and during the downward blowing process of the air, heat exchange occurs with the heat exchange medium in the heat exchange tube 20 to cool the air flow. Therefore, the extension direction of the heat absorption channel of the embodiments of the present application is set to extend in the height direction Z based on the inventor's discovery that the hot air will gather at the high place of the electrical box body, so that more hot air can be cooled during the process of blowing from top to bottom.

[0045] In some embodiments, referring to Figure 1 , the electrical box 100 further includes some power devices such as an inductor 60 and a capacitor 50. The heat of these power devices will be taken away by the circulating air inside the electrical box and enter the heat absorption channel to exchange heat with the heat exchange tube.

[0046] Furthermore, the electrical box body of the electrical box 100 of the embodiments of the present application is enclosed, which can effectively prevent insects, dust, and rain, thereby improving the use reliability of the electrical box 100.

[0047] Generally, the hot air with a relatively high temperature in the electrical appliance box will accumulate at the top of the electrical appliance box. In some cases, the temperature of the hot air may reach 70°C to 80°C. Therefore, to address this problem, the upper end of the heat absorption channel of the embodiment of the present application in the height direction Z has an air inlet. In this way, the hot air accumulated at the top of the electrical appliance box will be driven by the fan to enter the interior of the heat absorption channel through the air inlet at the upper end and exchange heat with the heat exchange medium in the heat exchange tube 20 to cool down, and then flow out through the air outlet at the lower end. Therefore, when the air flows out of the heat absorption housing 11 and flows back into the electrical appliance box body, it has been cooled, thus realizing self-circulation heat dissipation, keeping the temperature in the electrical appliance box body relatively stable, reducing the influence of the environment, and further improving the adaptability of the unit to the environment.

[0048] The fan 12 of the embodiment of the present application functions to suck the air in the electrical appliance box body to the air inlet of the heat absorption channel. Driven by the fan 12, the air flows towards the air inlet and enters the interior of the heat absorption channel through the air inlet to exchange heat with the heat exchange medium in the heat exchange tube.

[0049] In some embodiments, the heat exchange tube 20 extends and distributes in the extending direction of the heat absorption channel. This enables the hot air to exchange heat with the heat exchange medium throughout the process of flowing along the heat absorption channel in the heat absorption channel, thereby achieving sufficient heat exchange and optimizing the cooling effect. For example, in Figure 1 the shown embodiment, the heat absorption channel extends along the height direction Z. Correspondingly, the heat exchange tube 20 also extends in the height direction Z. In this way, the hot air can achieve heat exchange with the heat exchange medium in the heat exchange tube 20 at each position during the process of flowing from top to bottom, and the heat exchange effect is better.

[0050] The heat exchange medium in the heat exchange tube 20 flows along the height direction Z. The fan 12 of the heat absorption part 10 of the electrical appliance box of the embodiment of the present application is arranged at a position close to the upper end of the electrical appliance box. In this way, the hot air flow gathered at the top of the electrical appliance box can be sucked into the heat absorption housing 11 and make the hot air flow downward along the heat absorption channel extending in the height direction, and exchange heat with the heat exchange medium flowing along the height direction during the flowing process.

[0051] To further optimize the heat exchange effect, in some embodiments, the flowing direction of the heat exchange medium in the heat exchange tube 20 is opposite to the flowing direction of the air in the heat absorption channel. That is to say, specifically, the air in the heat absorption channel flows from top to bottom, while the heat exchange medium in the heat exchange tube 20 flows from bottom to top. Relative to the flowing direction of the air, the heat exchange medium flows reversely. In this way, the heat exchange medium needs to overcome gravity and flow upward, so the flowing speed can be slowed down, the heat exchange time between the heat exchange medium and the air can be lengthened, and sufficient heat exchange can be achieved.

[0052] In some embodiments, the fan 12 is disposed outside the heat absorption channel. The fan 12 is used to suck hot air into the air inlet. Specifically, for example, the fan 12 is disposed outside the first end of the heat absorption channel. The windward surface of the fan 12 faces the first end, that is, faces the air inlet, so as to form a greater driving force on the air inside the electrical box body, causing the air to flow towards the air inlet under the drive of the fan, and then entering the heat absorption channel through the air inlet for heat dissipation.

[0053] To suck more hot air into the heat absorption channel, refer to Figure 1 , Figures 5 to 7 , in some embodiments, the fan 12 is disposed inside the heat absorption channel. The fan 12 is disposed inside the heat absorption channel, so that the suction force of the fan 12 acts on the inside of the heat absorption channel, and the acting point of the acting force is more focused. As a result, the hot air inside the electrical box body will gather towards the heat absorption channel under the suction force of the fan 12, that is, more hot air will be sucked into the heat absorption channel.

[0054] To further improve the sucking effect on the hot air gathered at the top of the electrical box, in some embodiments, in the extending direction of the heat absorption channel, the fan 12 is disposed at a position close to the air inlet.

[0055] Specifically, an opening 111 is provided on the side surface of the heat absorption housing 11. The opening 111 is provided close to the air inlet, and the fan 12 is installed at the opening 111. An air inlet is provided at the upper end of the heat absorption housing 11, an air outlet is provided at the lower end of the heat absorption housing 11, and the heat absorption housing 11 has a heat absorption channel extending from the upper end to the lower end. The fan 12 is disposed inside the heat absorption channel and at a position close to the air inlet, that is, the fan 12 is disposed at a position close to the upper end of the heat absorption channel.

[0056] A heat absorption channel extending in the height direction Z is provided inside the heat absorption housing 11. The fan 12 is disposed in the heat absorption channel. At this time, the heat absorption channel has a first channel section close to the air inlet, a second channel section close to the air outlet, and a fan installation section between the first channel section and the second channel section. The fan installation section is installed with the fan. After the hot air enters the heat absorption channel from the air inlet, it will first flow through the first channel section, then through the fan, and finally through the second channel section, and flow out through the air outlet. In the height direction Z, the extending length of the first channel section is less than that of the second channel section. This makes the fan 12 close to the air inlet, and thus can generate a greater acting force on the hot air gathered at the top of the electrical box.

[0057] Refer to Figure 5 and Figure 7, when installing the fan, the base of the fan 12 is installed at the opening 111, and the air supply surface of the fan 12 faces the inner side of the heat absorption housing 11. After the fan 12 operates, driven by the fan 12, hot air flows from top to bottom, thereby realizing heat exchange with the heat exchange medium in the heat exchange tube 20.

[0058] Reference Figure 1 , the heat absorption housing 11 of the embodiment of the present application includes a plurality of heat absorption channels extending in the height direction Z. Hot air is sucked into the heat absorption channels under the operation of the fan, and the hot air flows along the heat absorption channels in the heat absorption channels, and absorbs heat from the heat exchange medium in the heat exchange tube 20 during the flow process. By providing a plurality of heat absorption channels in the heat absorption part 10 of the embodiment of the present application, the heat exchange area can be increased and the heat transfer effect can be improved.

[0059] Reference Figure 1 , in some embodiments, the heat absorption part 10 further includes a plurality of heat absorption fins provided in the heat absorption housing 11. The gaps between the plurality of heat absorption fins form a plurality of heat absorption channels. The plurality of heat absorption channels further increase the heat exchange area and optimize the heat exchange effect.

[0060] Specifically, as Figure 1 shown, the heat absorption channels in the heat absorption housing 11 extend in the height direction Z. The upper end of the heat absorption channel forms an air inlet, and the lower end of the heat absorption channel forms an air outlet. Here, the upper end and the lower end refer to the two ends in the height direction of the heat absorption channel. Therefore, the air in the electrical box body enters the heat absorption channel from the upper end of the heat absorption channel and flows out through the lower end.

[0061] In some embodiments, the electrical box further includes a heat dissipation part 30. The heat dissipation part 30 is arranged in the electrical box body and is in contact with the heat dissipation components in the electrical box body for heat exchange. The heat absorption part 10, the heat exchange tube 20 and the heat dissipation part 30 are stacked in sequence in the thickness direction X. The heat exchange tube 20 is arranged between the heat absorption part 10 and the heat dissipation part 30. The heat dissipation part 30 transfers the heat dissipated by the heat dissipation components to the heat exchange tube 20. The electrical box 100 of the embodiment of the present application is specifically provided with a heat dissipation part 30 in contact with the heat dissipation components to transfer the heat dissipated by the heat dissipation components to the heat exchange tube 20. That is to say, the electrical box 100 of the embodiment of the present application uses the heat absorption part 10 to realize the heat dissipation of the air inside the electrical box, and uses the heat dissipation part 30 to realize the targeted heat dissipation of the heat dissipation components, thereby realizing the automatic temperature control inside the electrical box and reducing the influence of the ambient temperature on heat dissipation.

[0062] In order to further improve the heat transfer effect, in some embodiments, reference Figure 1, a first receiving groove 112 is provided on the wall surface of the heat absorption housing 11 that contacts the heat exchange tube 20. The first surface of the heat exchange tube 20 in the thickness direction X is clamped in the first receiving groove 112. The first surface of the heat exchange tube 20 is clamped in the first receiving groove 112, so that the first surface of the heat exchange tube 20 forms a fitting contact with the first receiving groove 112, and the contact surface is large, improving the heat transfer effect.

[0063] Specifically, the heat exchange tube 20 is a columnar tube. The cross-sectional shape of the first receiving groove 112 is semi-circular to contact and transfer heat with the upper half of the heat exchange tube 20.

[0064] In some embodiments, the heat dissipation part 30 includes a heat dissipation plate. A second receiving groove is provided on the wall surface of the heat dissipation plate that contacts the heat exchange tube 20. The second surface of the heat exchange tube 20 in the thickness direction X is clamped in the second receiving groove. Similarly, the second surface of the heat exchange tube 20 is clamped in the second receiving groove, so that the second surface of the heat exchange tube 20 forms a fitting contact with the second receiving groove, and the contact surface is large, improving the heat transfer effect.

[0065] Reference Figure 1 , in some embodiments, the electrical box 100 includes a heat absorption part 10, a heat dissipation part 30, and a heat exchange tube 20. The heat absorption part 10 is used to transfer the heat of the air inside the electrical box body to the heat exchange tube 20. The heat dissipation part 30 is used to transfer the heat dissipated by the heat dissipation components to the heat exchange tube 20. That is to say, the heat of the electrical box 100 in the embodiments of the present application is ultimately absorbed by the heat exchange medium in the heat exchange tube 20. Specifically, the heat absorption part 10 is provided on one side of the heat exchange tube 20, so that the heat absorption part 10 transfers heat with one surface of the heat exchange tube 20, and the heat dissipation part 30 is provided on the other side of the heat exchange tube 20, so that the heat dissipation part 30 transfers heat with the other surface of the heat exchange tube 20.

[0066] Since the heat dissipation part 30 contacts and exchanges heat with the heat dissipation components in the electrical box body to absorb the heat dissipated by the heat dissipation components, the temperature of the heat dissipation part 30 will be relatively high. In order to avoid heat exchange between the heat absorption part 10 and the heat dissipation part 30 resulting in an increase in the temperature of the heat absorption part 10, in some embodiments, reference Figure 4 , the heat absorption part 10 and the heat dissipation part 30 clamp the heat exchange tube 20 in the middle, and the electrical box 10 further includes an isolation part 70 provided between the heat absorption part 10 and the heat dissipation part 30. The isolation part 70 extends in the thickness direction X and has a gap between the heat absorption part 10 and the heat dissipation part 30. There is a gap between the heat absorption part 10 and the heat dissipation part 30, so that the heat absorption part 10 and the heat dissipation part 30 do not directly exchange heat. In some embodiments, the isolation part 70 includes a plurality of isolation columns arranged at intervals. The plurality of isolation columns make there be gaps at different positions between the heat absorption part 10 and the heat dissipation part 30, realizing all-round heat isolation.

[0067] In some embodiments, the heat exchange tube 20 includes a refrigerant tube. Refrigerant flows in the refrigerant tube. The embodiment of the present application utilizes the refrigerant circulating in the refrigerant circulation loop of the air conditioner to absorb the heat in the electrical box, and does not need to set up a special cold source for the heat dissipation of the electrical box, thereby reducing costs. Moreover, since the flow rate of the refrigerant circulating in the refrigerant circulation loop is large, the temperature on the surface of the heat exchange tube is less affected by the heat dissipation components, so the single-sided heat transfer effect of the heat exchange tube is good.

[0068] In some embodiments, the electrical box further includes a PCB board 40. The heat dissipation portion 30 contacts the heat dissipation components on the PCB board 40. The heat dissipation components include high heat generation modules. The heat dissipation components on the PCB board 40 include driving components, such as a driving module for driving a compressor. The driving components have a high power and therefore dissipate more heat. The heat dissipation portion 30 contacts the heat dissipation components on the PCB board 40, so that the heat of the heat dissipation components during operation can be directly transferred to the heat dissipation portion 30, and then heat exchange is achieved through the heat dissipation portion 30 and the heat exchange tube 20, thereby allowing the heat dissipation of the heat dissipation components to be timely conducted to prevent the components from overheating.

[0069] like Figure 1 As shown, the high heat generation module is a component with a large heat generation per unit volume / area. In some embodiments, the high heat generation module includes a chip. The high heat generation module has a regular shape, so the heat dissipation part 30 is specially provided in this embodiment to directly contact the high heat generation module for heat dissipation. For other components with irregular shapes or low heat generation per unit volume / area, the heat absorption part drives the air inside the electrical box to circulate and dissipate heat. For example, in Figure 1 In the illustrated embodiment, the capacitor 50 and the inductor 60 are irregular in shape and do not generate much heat, so the heat is dissipated by circulating air using a heat absorbing portion.

[0070] In some embodiments, the heat dissipation unit 30 includes a heat dissipation plate. The heat dissipation plate can be made of a material with good thermal conductivity such as aluminum. The heat dissipation unit 30 is set as a heat dissipation plate, so that the heat dissipation unit 30, the heat exchange tube 20 and the heat absorption unit 10 are sequentially arranged in the thickness direction to form a stacked arrangement, so that the structure of the electrical box is compact.

[0071] refer to Figure 8 and Figure 9 The embodiment of the present application further provides an air conditioner, comprising an outdoor unit housing 500 and the above-mentioned electrical box 100. The electrical box 100 is disposed in the outdoor unit housing 500.

[0072] In some embodiments, reference Figure 8 and Figure 9, the air conditioner further includes a partition 300, an outdoor heat exchange fan 200, and an outdoor heat exchanger 400. The partition 300 divides the inner cavity of the outdoor unit housing 500 into a first cavity and a second cavity in the width direction Y. The outdoor heat exchange fan 200 and the outdoor heat exchanger 400 are disposed in the first cavity. The electrical box 100 is disposed in the second cavity. The first cavity and the second cavity are isolated from each other. In the embodiment of the present application, the isolation between the first cavity and the second cavity means that there is no communication hole between the first cavity and the second cavity. Compared with the related art in which ventilation holes are provided on the partition, the performance of rain prevention, insect prevention, dust prevention, etc. is improved.

[0073] In some embodiments, the air conditioner further includes a refrigerant circulation circuit. The heat exchange tube 20 is fluidly connected to the refrigerant circulation circuit so that the refrigerant flows into the heat exchange tube 20. In the embodiment of the present application, the refrigerant flowing in the refrigerant circulation circuit of the air conditioner itself is used to absorb the heat in the electrical box, and there is no need to provide a dedicated cold source for the heat dissipation of the electrical box, thereby reducing costs. Moreover, since the flow rate of the refrigerant flowing in the refrigerant circulation circuit is large, the temperature on the surface of the heat exchange tube is less affected by the heat dissipation components, and thus the single-sided heat transfer effect of the heat exchange tube is good.

[0074] Next, according to Figures 1 to 7 a detailed description will be given of the structure of the electrical box in a specific embodiment of the present application.

[0075] As Figure 1 and Figure 2 shown, the electrical box includes an electrical box body, a heat absorption part 10, a heat exchange tube 20, a heat dissipation part 30, a PCB board 40, a capacitor 50, and an inductor 60.

[0076] Among them, the PCB board 40 is fixedly connected to the electrical box body. And heat dissipation components, such as driving components, are provided on the PCB board 40. The lower surface of the PCB board 40 is connected to the electrical box body, and the heat dissipation components are provided on the upper surface of the PCB board 40. The heat dissipation part 30 is pressed against the heat dissipation components. Specifically, a second receiving groove is provided on the heat dissipation part 30. The heat exchange tube 20 is received in the second receiving groove. The heat absorption part 10 is provided above the heat exchange tube 20. That is to say, the heat absorption part 10 and the heat dissipation part 30 are respectively provided on both sides of the heat exchange tube 20.

[0077] The heat exchange tube 20 extends in the height direction Z. Specifically, the heat exchange tube 20 has a U-shaped tube structure. The U-shaped tube structure extends in the entire height direction Z of the PCB board. In the height direction Z, the heat exchange tube 20 covers the heat absorption part 10 and the heat dissipation part 30 to achieve comprehensive heat conduction and heat exchange.

[0078] As Figure 1 and Figure 2 shown, in the width direction Y, the capacitor 50 and the inductor 60 are provided on one side of the heat absorption part 10.

[0079] AsFigure 4 As shown, the heat dissipation part 30 and the heat absorption part 10 are isolated from each other by the isolation part 70 so that there is a gap between the heat dissipation part 30 and the heat absorption part 10 to prevent heat from affecting each other.

[0080] As Figures 4 to 7 shown, the heat absorption part 10 includes a heat absorption housing 11 and a fan 12. Among them, the heat absorption housing 11 is a square housing and is provided with a heat absorption channel. And the heat absorption channel extends in the height direction Z. From Figure 4 the top view, it can be seen that the suction port of the heat absorption channel is provided at the upper end of the heat absorption housing 11. Therefore, the hot air gathered at the upper end of the electrical box body will be sucked into the heat absorption channel from the upper suction port. As Figure 5 shown, the fan 12 is arranged at a position close to the upper end of the heat absorption housing 11, closer to the hot air, increasing the amount of hot air entering the heat absorption housing 11. It should be noted here that Figure 5 and Figure 7 only the fan 12 is drawn out of the heat absorption housing 11 to show the fan 12, which does not represent the installation position of the fan 12. When the fan 12 is installed in the heat absorption housing 11, the fan 12 is completely hidden in the heat absorption housing 11. Specifically, as Figure 1 shown, an opening 111 is provided on the wall surface of the heat absorption housing 11 near the upper end. The fan 12 is installed inside the opening 111.

[0081] Furthermore, in order to improve heat dissipation, as Figure 1 and Figure 4 shown, a plurality of heat absorption fins extending in the height direction Z are provided inside the heat absorption housing 11. An absorption channel is formed between two adjacent heat absorption fins. In order to further optimize the heat dissipation effect, as Figure 4 shown, an arc portion is provided on the heat absorption fin to further increase the heat transfer area.

[0082] The self-cooling electrical box radiator according to the embodiment of the present application can be effectively attached to the heat exchange tube 20 by providing a heat absorption part 10 with a receiving groove provided thereon. The heat dissipation part 30 and the heat absorption part 10 press the heat exchange tube 20 in the middle, and a heat insulation part 70 is provided between the heat dissipation part 30 and the heat absorption part 10. The function of the heat insulation part 70 is to effectively isolate the heat transfer between the heat dissipation part 30 and the heat absorption part 10. The heat dissipation part 30 transfers heat to one surface of the heat exchange tube 20, and the heat absorption part 10 transfers heat to the other surface of the heat exchange tube 20. By providing the heat insulation part 70 between the heat dissipation part 30 and the heat absorption part 10, heat transfer is minimized as much as possible. The heat dissipation part 30 transfers the heat generated by the high-heat generation module to the heat exchange tube 20, which is carried away by the refrigerant. When the fan 12 is started, the air in the upper part of the electrical box body flows downward from top to bottom through the heat absorption housing 11, and the heat of the hot air in the upper part of the electrical box body is absorbed by the heat absorption fins and transferred to the heat exchange tube. The air inside the electrical box body is self-circulating air, and the heat of power devices such as capacitors and inductors is carried away by the circulating air. The temperature inside the electrical box can be self-cooled even when the ambient temperature is high.

[0083] Moreover, the heat exchange tube 20 of this embodiment is connected to the refrigerant circulation circuit. Since the refrigerant flow rate in the refrigerant tube is large, the surface temperature of the heat exchange tube is less affected by the power device. Therefore, the single-sided heat transfer effect of the heat exchange tube is good, and a heat insulation part is also provided between the heat dissipation part and the heat absorption part. The heat absorber absorbs and transfers heat independently, and the electrical box can be effectively self-cooled. The air flow flows from top to bottom, which can make the high-temperature air flow downward and fully absorb and transfer heat with the fins in the heat absorption housing. The temperature of the air coming out is close to the refrigerant temperature, so that the temperature inside the electrical box remains constant and is not affected by the ambient temperature, greatly improving the environmental adaptability of the unit.

[0084] The self-cooling radiator electrical box of this embodiment does not need to provide ventilation holes in the partition for heat dissipation, and can also conduct heat away in a closed space, improving the performance of rain prevention, insect prevention, dust prevention, etc. It realizes automatic temperature control of the electrical box, enables the unit to still operate normally in a harsh environment, and expands the operating temperature range of the unit. The sealed electrical box design effectively prevents insects, dust, and rain, and the operating life of the unit is better.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present application or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present application, they should all be covered within the scope of the technical solutions claimed in the present application.

Claims

1. An electrical box, characterized in that, Comprising: The electrical box body; A heat absorption part (10), which is arranged inside the electrical box body, and the heat absorption part (10) includes a heat absorption housing (11) and a fan (12). The heat absorption housing (11) has a heat absorption channel. The first end of the heat absorption channel has an air inlet, and the second end of the heat absorption channel has an air outlet. The fan (12) is configured to drive the air inside the electrical box body to enter the heat absorption channel from the air inlet and flow along the heat absorption channel; And A heat exchange tube (20), the heat exchange tube (20) is arranged adjacent to the heat absorption part (10), and a heat exchange medium flows through the heat exchange tube (20), and the heat exchange medium absorbs the heat of the air in the heat absorption channel.

2. The electrical box according to claim 1, characterized in that, The heat absorption channel is configured to extend in the height direction (Z) of the electrical box body, and the first end is higher than the second end so that the air inside the electrical box body flows downward along the heat absorption channel under the drive of the fan (12).

3. The electrical box according to claim 1, characterized in that, The heat exchange tube (20) extends and is distributed in the extending direction of the heat absorption channel.

4. The electrical box according to claim 3, characterized in that, The flowing direction of the heat exchange medium in the heat exchange tube (20) is opposite to the flowing direction of the air in the heat absorption channel.

5. The electrical box according to claim 1, characterized in that, The fan (12) is arranged inside the heat absorption channel.

6. The electrical box according to claim 5, characterized in that, In the extending direction of the heat absorption channel, the fan (12) is arranged at a position close to the air inlet.

7. The electrical box according to claim 1, characterized in that, The fan (12) is arranged outside the heat absorption channel.

8. The electrical box according to claim 1, characterized in that The heat absorption part (10) further includes a plurality of heat absorption fins arranged inside the heat absorption housing (11), and gaps between the plurality of heat absorption fins form a plurality of the heat absorption channels.

9. The electrical box according to any one of claims 1 to 8, characterized in that The electrical box further includes a heat dissipation part (30), the heat dissipation part (30) is arranged inside the electrical box body and is in contact heat exchange with heat dissipation components inside the electrical box body. The heat absorption part (10), the heat exchange tube (20) and the heat dissipation part (30) are sequentially stacked in the thickness direction (X). The heat exchange tube (20) is arranged between the heat absorption part (10) and the heat dissipation part (30), and the heat dissipation part (30) transfers the heat dissipated by the heat dissipation components to the heat exchange tube (20).

10. The electrical box according to claim 9, characterized in that A first accommodation groove (112) is arranged on the wall surface of the heat absorption housing (11) in contact with the heat exchange tube (20), and the first surface of the heat exchange tube (20) in the thickness direction (X) is clamped in the first accommodation groove (112); and / or, the heat dissipation part (30) includes a heat dissipation plate, and a second accommodation groove is arranged on the wall surface of the heat dissipation plate in contact with the heat exchange tube (20), and the second surface of the heat exchange tube (20) in the thickness direction (X) is clamped in the second accommodation groove.

11. The electrical box according to claim 9, characterized in that, The heat absorption part (10) and the heat dissipation part (30) clamp the heat exchange tube (20) in the middle. The electrical box (10) further includes an isolation part (70) arranged between the heat absorption part (10) and the heat dissipation part (30). The isolation part (70) extends in the thickness direction (X) and has a gap between the heat absorption part (10) and the heat dissipation part (30).

12. The electrical box according to claim 9, characterized in that, The electrical box further includes a PCB board (40), and the heat dissipation part (30) contacts with the heat dissipation components on the PCB board (40).

13. The electrical box according to any one of claims 1 to 8, characterized in that The electrical box body is enclosed.

14. An air conditioner, comprising an outdoor unit housing (500) and the electrical box (100) according to any one of claims 1 to 13, wherein the electrical box (100) is disposed inside the outdoor unit housing (500).

15. The air conditioner according to claim 14, characterized in that, The air conditioner further includes a partition (300), an outdoor heat exchange fan (200), and an outdoor heat exchanger (400). The partition (300) divides the inner cavity of the outdoor unit housing (500) into a first cavity and a second cavity in the width direction (Y). The outdoor heat exchange fan (200) and the outdoor heat exchanger (400) are disposed in the first cavity, and the electrical box (100) is disposed in the second cavity. The first cavity and the second cavity are separated from each other.

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