An electric control device, an air conditioner outdoor unit and an air conditioner

Abstract

An electronic control device, an outdoor air conditioning unit, and an air conditioner are disclosed. The electronic control device includes: an electronic control box, comprising a cover and a box body with an opening on one side, the cover being fitted onto the opening of the box body, the cover and the box body forming a heat dissipation duct; a heating element disposed within the box body; and a duct cover located outside the electronic control box and disposed on the side wall of the box body opposite the opening, with a duct passage provided between the duct cover and the box body. A first port of the heat dissipation duct is connected to the outside of the electronic control box, a second port of the heat dissipation duct is connected to the first port of the duct passage, and a second port of the duct passage is connected to the outside of the electronic control box. The opening of the box body faces forward, and the second port of the duct passage is connected to the heat exchange chamber of the outdoor air conditioning unit through a connecting hole. Even if water droplets splashed by the fan blades reach the connecting hole from the heat exchange chamber, they enter the duct passage through the connecting hole, making it difficult for them to pass through the duct passage and turn approximately 90 degrees horizontally into the electronic control device. Therefore, the electronic control device is less prone to damage from water.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of air conditioning equipment technology, specifically to an electronic control device, an outdoor air conditioning unit, and an air conditioner. Background Technology

[0002] The existing air conditioner outdoor unit includes a casing, an electronic control unit, a rain cover, and a cooling fan. The casing contains a heat exchange chamber and a mounting chamber, which share a common wall with a connecting hole. The rain cover is located inside the heat exchange chamber and at the connecting hole, with an air outlet duct between the rain cover and the common wall. The cooling fan is located inside the mounting chamber. The electronic control unit is located inside the mounting chamber and at the connecting hole, with a cooling duct inside. The connecting hole connects to the heat exchange chamber via the air outlet duct and also connects to the mounting chamber via the cooling duct.

[0003] In heavy rain and when the outdoor unit of an air conditioner is running, rainwater droplets will enter the heat exchange chamber from its front. Some of these droplets will fall onto the blades of the cooling fan. Since the fan blades are rotating, the droplets that fall onto the fan blades will be flung away by the fan blades. When there are a lot of droplets flung away by the fan blades, some droplets will enter the electrical control device directly through the air outlet duct and connecting hole, causing the electrical control device to short-circuit and be damaged by water. Utility Model Content

[0004] This application provides an electronic control device, including: an electronic control box, the electronic control box including a box cover and a box body with an opening on one side, the box cover being installed on the opening of the box body, the box cover and the box body forming a heat dissipation duct; a heat-generating device disposed inside the box body; and a duct cover located outside the electronic control box and disposed on the side wall of the box body opposite to the opening, and a through-flow duct is provided between the duct cover and the box body, the first port of the heat dissipation duct being connected to the outside of the electronic control box, the second port of the heat dissipation duct being connected to the first port of the through-flow duct, and the second port of the through-flow duct being connected to the outside of the electronic control box.

[0005] In some exemplary embodiments, the heat-generating device includes a circuit board and an inductor, with the circuit board located below the inductor, a first port of the heat dissipation duct located below the circuit board, and a second port of the heat dissipation duct located above the circuit board.

[0006] In some exemplary embodiments, the inductor is mounted on the side wall of the housing opposite the opening via an inductor support. The inductor support and the side wall of the housing opposite the opening together form a protective cavity. The protective cavity is located between the heat dissipation duct and the air passage duct. The second port of the heat dissipation duct and the first port of the air passage duct are both located on the cavity wall of the protective cavity.

[0007] In some exemplary embodiments, both the second port of the heat dissipation duct and the first port of the air passage duct are elongated grille holes.

[0008] In some exemplary embodiments, the electrical control box further includes a terminal block located inside the box and on the side of the circuit board facing the opening, with one end of the terminal block hinged to the box body and the other end of the terminal block detachably fixedly connected to the box body.

[0009] In some exemplary embodiments, the duct cover and the side wall of the box body opposite the opening form the air passage duct.

[0010] This application also provides an air conditioner outdoor unit, including a housing and an electronic control device as described in any of the above embodiments. The housing has a heat exchange chamber and an installation chamber arranged sequentially in a first direction. The heat exchange chamber and the installation chamber have a common wall. The upper part of the common wall is provided with a connecting hole. The electronic control device is located in the upper part of the installation chamber. The second port of the air duct is connected to the heat exchange chamber through the connecting hole. The first direction intersects with the vertical direction.

[0011] In some exemplary embodiments, the first direction is the left-right direction, the opening of the box body faces the front side of the mounting chamber, and the connecting hole and the air duct cover are both located on the rear side of the box body.

[0012] In some exemplary embodiments, the outdoor unit of the air conditioner further includes: a rain cover located inside the heat exchange chamber and disposed at the connecting hole, and an air outlet duct is provided between the rain cover and the common wall, and the connecting hole is connected to the heat exchange chamber through the air outlet duct.

[0013] This application also provides an air conditioner, including the outdoor unit of the air conditioner described in any of the above embodiments.

[0014] The technical solution provided in this application embodiment is that the electronic control device is applied to the outdoor unit of the air conditioner. The opening of the box faces forward, and the second port of the air duct is connected to the heat exchange chamber of the outdoor unit of the air conditioner through the connecting hole. Even if the water droplets thrown by the fan blades reach the connecting hole from the heat exchange chamber, they will enter the air duct through the connecting hole. It is difficult for them to pass through the air duct and turn roughly horizontally by 90 degrees to enter the electronic control device. Therefore, the electronic control device is less likely to be damaged by short circuit when exposed to water.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0017] Figure 1 This is a three-dimensional structural diagram of an air conditioner outdoor unit from one perspective, provided in some embodiments of this application. The mounting plate and the first mounting bracket are not connected.

[0018] Figure 2 for Figure 1 A three-dimensional structural diagram of the air conditioner outdoor unit from another perspective;

[0019] Figure 3 for Figure 1 The diagram shows a partial structure of the outdoor unit of the air conditioner. The mounting plate is not connected to the first mounting bracket.

[0020] Figure 4 for Figure 1 A partial structural diagram of the heat exchanger assembly of the outdoor unit of the air conditioner, showing the state in which it is removed from the first installation area and moved forward.

[0021] Figure 5 for Figure 1 The diagram shows a top view of the assembled chassis, partition, and heat exchanger assembly of the outdoor unit of the air conditioner.

[0022] Figure 6 A partial structural schematic diagram of the heat exchanger assembly of an air conditioner outdoor unit in a forward-removed state from the first mounting area, as provided in some other embodiments of this application;

[0023] Figure 7 This is a partial front view of the assembled structure of the electronic control device, partition, duct cover and rain cover in an air conditioner outdoor unit according to some embodiments of this application. The arrows indicate the direction of airflow.

[0024] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the structure shown, with arrows indicating the direction of airflow.

[0025] Figure 9 This is a structural schematic diagram of the maintenance status of an air conditioner outdoor unit electrical control device provided in some embodiments of this application;

[0026] Figure 10 This is a three-dimensional structural diagram of an air conditioner outdoor unit provided in some embodiments of this application.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 100 Shell, 110 Heat exchange chamber, 120 Mounting chamber, 121 First mounting area, 122 Second mounting area, 123 Third mounting area, 130 Chassis, 140 Middle partition, 141 Connecting hole, 151 First bracket, 152 Second bracket, 1521 First positioning hole, 153 Third bracket, 160 First mounting bracket, 161 First operating window, 162 Second operating window, 163 Third operating window, 170 Support bracket, 180 Fourth bracket, 190 Fifth bracket, 200 Heat exchanger assembly, 210 Water inlet pipe, 220 Mounting flange, 230 Shell-and-tube heat exchanger, 240 Second mounting bracket, 241 Mounting foot, 242 Mounting plate, 300 Compressor, 400 Electrical control device, 410 Electrical control box, 411 Heat dissipation duct, 412 Grille hole, 413 Box body, 415 Terminal block, 421 Circuit board, 422 Inductor, 423 Inductor bracket, 430 Air duct cover, 431 Air duct, 440 Protective cavity, 510 First threaded connector, 520 Second threaded connector, 530 Third threaded connector, 600 Cooling fan, 700 Rainproof cover, 710 Exhaust air duct. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0030] This application provides an outdoor unit for an air conditioning system used in a high-capacity multi-split heating unit, such as... Figures 1 to 10 As shown, it includes: a housing 100, which has a heat exchange chamber 110 and an installation chamber 120 arranged sequentially in a first direction. The installation chamber 120 includes a first installation area 121, a second installation area 122, and a third installation area 123, which are arranged sequentially in a vertical direction and intersect with the vertical direction; a heat exchanger assembly 200, which is located in the first installation area 121 and includes multiple sub-heat exchange modules. Each sub-heat exchange module includes a refrigerant flow channel and a water flow channel that exchanges heat with the refrigerant flow channel. The multiple refrigerant flow channels are not interconnected; multiple compressors 300, which are located in the second installation area 122 and are connected to the multiple refrigerant flow channels one by one; and an electronic control device 400, which is located in the third installation area 123.

[0031] The outdoor unit of this air conditioner for a high-capacity multi-split heating unit has an electrical control device 400, multiple compressors 300, and a heat exchanger assembly 200 arranged sequentially in the vertical direction within the mounting cavity. This arrangement makes the layout of the electrical control device 400, multiple compressors 300, and heat exchanger assembly 200 within the mounting cavity 120 more compact in the vertical direction. By fully utilizing the vertical space within the mounting cavity 120, the minimum size required for the mounting cavity 120 in the first direction is reduced, resulting in a smaller minimum size required for the casing 100 in the first direction. Therefore, this design is suitable for high-capacity multi-split heating units, resulting in a more compact layout and a smaller footprint for the outdoor unit of the high-capacity multi-split heating unit.

[0032] In some examples, such as Figures 1 to 4 , Figure 6 As shown, the housing 100 includes: a chassis 130; a partition 140, which is erected on the chassis 130 along a second direction, with a heat exchange chamber 110 and a mounting chamber 120 located on both sides of the partition 140, intersecting the first direction, the second direction, and the vertical direction; a bracket disposed on the chassis 130, located on the side of the partition 140 opposite to the heat exchange chamber 110; and a first mounting bracket 160, located on the side of the partition 140 opposite to the heat exchange chamber 110 and positioned above the bracket and the heat exchanger assembly 200. Multiple compressors 300 are mounted on a first mounting bracket 160. A first mounting area 121 is located between a chassis 130, a middle partition 140, the first mounting bracket 160, and a support. A second mounting area 122 is located between the first mounting bracket 160 and an electrical control device 400. The support, chassis 130, middle partition 140, and first mounting bracket 160 together form an operating window. A heat exchanger assembly 200 is fixed within the first mounting area 121 by a first threaded connector 510, which is designed to be detached and reassembled from the operating window. The first direction is left-right, and the second direction is front-back.

[0033] When the heat exchanger assembly 200 needs to be repaired or replaced, the first threaded connector 510 can be disassembled and installed through the operation window without removing the first mounting bracket 160 and the compressor 300, making the disassembly and installation of the first threaded connector 510 simpler.

[0034] In some embodiments, such as Figures 1 to 3 As shown, the bracket includes a first bracket 151 and a second bracket 152. The first bracket 151 is located in front of the second bracket 152. The first bracket 151, chassis 130, middle partition 140 and first mounting bracket 160 together form a first operating window 161. The second bracket 152, chassis 130, middle partition 140 and first mounting bracket 160 together form a second operating window 162. The first operating window 161 is located in front of the second operating window 162. The operating window includes the first operating window 161 and the second operating window 162.

[0035] The heat exchanger assembly 200 is fixed within the first mounting area 121 by multiple first threaded connectors 510. Depending on the installation and removal positions of the first threaded connectors 510, the first threaded connector 510 near the first operating window 161 is installed and removed from the first operating window 161, and the first threaded connector 510 near the second operating window 162 is installed and removed from the second operating window 162. This increases the efficiency of installing and removing the first threaded connectors 510. Alternatively, a third operating window 163 can be formed between the first bracket 151 and the second bracket 152. The first threaded connector 510 near the third operating window 163 can be installed and removed from the third operating window 163. This allows for a more dispersed arrangement of the multiple first threaded connectors 510, which helps improve the stability of the heat exchanger assembly 200 after it is fixed.

[0036] like Figures 1 to 6 As shown, the water flow channel includes two water inlet pipes 210, one of which is an inlet water inlet pipe and the other is an outlet water inlet pipe.

[0037] It can be, such as Figures 1 to 4 As shown, the second bracket 152 includes a first plate segment erected along a second direction. A first positioning hole 1521 is provided at one end of the first plate segment adjacent to the first bracket 151. A water inlet pipe 210 of the water flow channel is provided with a mounting flange 220, which is placed within the first positioning hole 1521. The mounting flange 220 and the first plate segment are connected by a second threaded connector 520 screwed from the outside of the first mounting area 121 to the inside of the first mounting area 121. The heat exchange chamber 110 is located on the left side of the mounting chamber 120, and in this configuration, the water inlet pipe 210 extends towards the right side of the housing 100. When maintenance or replacement of the heat exchanger assembly 200 is required, the second threaded connector 520 can be disassembled and installed from the right side of the first plate segment without removing the first mounting bracket 160 and the compressor 300. This simplifies the disassembly and installation of the second threaded connector 520. The first positioning hole 1521 can be a round hole or a notch. After disconnecting the first threaded connector 510 and the second threaded connector 520, the connecting pipe connected to the refrigerant flow channel, and the connecting pipe connected to the water flow channel, the heat exchanger assembly 200 can be removed from the front of the first installation area 121 (if the heat exchanger assembly 200 is blocked by the first bracket 151 and cannot be removed from the front of the first installation area 121, the first bracket 151 also needs to be removed). This solution makes the disassembly and assembly process of the heat exchanger assembly 200 simpler.

[0038] Or it could be, such as Figure 6As shown, the second bracket 152 includes a second plate segment erected along the first direction. The second plate segment has a second positioning hole. The water inlet pipe 210 of the water flow channel has a mounting flange 220, which is placed inside the second positioning hole. The mounting flange 220 and the second plate segment are connected by a second threaded connector 520 screwed from back to front. The heat exchange chamber 110 is located to the left of the mounting chamber 120. In this configuration, the water inlet pipe 210 extends towards the rear side of the housing 100. When the heat exchanger assembly 200 needs maintenance or replacement, the second threaded connector 520 can be disassembled and installed from the rear side of the second plate segment without removing the first mounting bracket 160 and the compressor 300. This simplifies the disassembly and installation of the second threaded connector 520. The second positioning hole can be a round hole or a notch. After disconnecting the first threaded connector 510 and the second threaded connector 520, the connecting pipe connected to the refrigerant flow channel, and the connecting pipe connected to the water flow channel, the heat exchanger assembly 200 can be removed from the front of the first installation area 121 (if the heat exchanger assembly 200 is blocked by the first bracket 151 and cannot be removed from the front of the first installation area 121, the first bracket 151 also needs to be removed). This solution makes the disassembly and assembly process of the heat exchanger assembly 200 simpler.

[0039] Alternatively, the first bracket 151 may include a third plate segment erected along the second direction. The third plate segment has a third positioning hole. The water inlet pipe 210 of the water flow channel has a mounting flange 220, which is placed within the third positioning hole. The mounting flange 220 and the second plate segment are connected by a second threaded connector 520 screwed from the outside of the first mounting area 121 to the inside of the first mounting area 121. The heat exchange chamber 110 is located on the left side of the mounting chamber 120. In this configuration, the water inlet pipe 210 extends towards the right side of the housing 100. When maintenance or replacement of the heat exchanger assembly 200 is required, the second threaded connector 520 can be disassembled and installed from the right side of the third plate segment without removing the first mounting bracket 160 and the compressor 300. This simplifies the disassembly and installation of the second threaded connector 520. The third positioning hole can be a round hole or a notch. After disconnecting the first threaded connector 510 and the second threaded connector 520, the connecting pipe connected to the refrigerant flow channel, and the connecting pipe connected to the water flow channel, the heat exchanger assembly 200 can be removed from the front of the first installation area 121 (if the heat exchanger assembly 200 is blocked by the first bracket 151 and cannot be removed from the front of the first installation area 121, the first bracket 151 also needs to be removed). This solution makes the disassembly and assembly process of the heat exchanger assembly 200 simpler.

[0040] Those skilled in the art can design it as needed: both water inlet pipes 210 extend toward the right side of the housing 100; or both water inlet pipes 210 extend toward the rear side of the housing 100; or one water inlet pipe 210 extends toward the right side of the housing 100 and the other water inlet pipe 210 extends toward the rear side of the housing 100, etc.; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this utility model, and will not be elaborated here, and should all fall within the protection scope of this application.

[0041] In some embodiments, such as Figures 1 to 4 , Figure 6 As shown, both the first bracket 151 and the second bracket 152 are configured as folded brackets, which makes the first bracket 151 and the second bracket 152 stronger and able to better support the first mounting bracket 160. At this time, after removing the first threaded connector 510 and the second threaded connector 520, the connecting pipe connected to the refrigerant flow channel, and the connecting pipe connected to the water flow channel, the first bracket 151 can be removed, and the heat exchanger assembly 200 can be taken out from the front side of the first installation area 121.

[0042] In some embodiments, such as Figure 2 As shown, the housing 100 also includes a third bracket 153, which is located behind the first mounting bracket 160 and between the partition plate 140 and the second bracket 152. The lower end of the third bracket 153 is fixedly connected to the chassis 130, and the upper end of the third bracket 153 is fixedly connected to the first mounting bracket 160. The first mounting bracket 160 is also fixedly connected to the partition plate 140. After the first bracket 151 is removed, the second bracket 152, the third bracket 153, and the partition plate 140 together support the first mounting bracket 160.

[0043] In some embodiments, such as Figure 1 and Figure 5 As shown, the housing 100 also includes a support frame 170, which is located within the first mounting area 121. The top surface of the support frame 170 is not lower than the side of the chassis 130. The heat exchanger assembly 200 is fixed to the top surface of the support frame 170 via a first threaded connector 510. Thus, after removing the first threaded connector 510, the second threaded connector 520, the connecting pipes connected to the refrigerant channel, the connecting pipes connected to the water channel, and the first bracket 151, the heat exchanger assembly 200 can be removed from the first mounting area 121 by simply pulling it forward without lifting it up. This design simplifies the removal process of the heat exchanger assembly 200.

[0044] In some embodiments, such as Figure 3 , Figure 4 and Figure 6As shown, the heat exchanger assembly 200 includes a shell-and-tube heat exchanger 230 and a second mounting bracket 240 assembled together. The shell-and-tube heat exchanger 230 includes multiple sub-heat exchange modules. The second mounting bracket 240 has mounting feet 241 at the bottom and mounting plate 242 at the top. A first threaded connector 510 passes through the mounting feet 241 from top to bottom and is screwed onto the support frame 170. The mounting plate 242 is located on the front and rear sides of the first mounting bracket 160, and the mounting plate 242 and the first mounting bracket 160 are connected by a third threaded connector 530 screwed in the front-to-back direction.

[0045] When the heat exchanger assembly 200 needs maintenance or replacement, the third threaded connector 530 can be disassembled and installed from the front and rear sides of the first mounting area 121 without removing the first mounting bracket 160 and the compressor 300. This method of disassembling and installing the third threaded connector 530 is simpler. After removing the first threaded connector 510, the second threaded connector 520, the third threaded connector 530, the connecting pipe connected to the refrigerant flow channel, the connecting pipe connected to the water flow channel, and the first bracket 151, the second mounting bracket 240 can be pulled forward to remove the heat exchanger assembly 200 from the first mounting area 121.

[0046] In some embodiments, such as Figure 1 and Figure 2 As shown, multiple compressors 300 are two compressors 300, multiple sub-heat exchange modules are two sub-heat exchange modules, and the two sub-heat exchange modules are arranged sequentially in the vertical direction or nested inside and outside. There are two refrigerant channels and two water channels. The two compressors 300 are arranged sequentially in the first direction, and the two water channels are connected in series or in parallel.

[0047] Alternatively, the multiple compressors 300 can be configured as three compressors 300, and the multiple sub-heat exchange modules can be configured as three sub-heat exchange modules. The three sub-heat exchange modules are arranged sequentially in the vertical direction or nested internally and externally. There are three refrigerant channels and three water channels, which are connected in series or in parallel. In this case, the three compressors 300 can be arranged horizontally at the three vertices of a triangle. Alternatively, the multiple compressors 300 can be configured as four compressors 300, and the multiple sub-heat exchange modules can be configured as four sub-heat exchange modules. The four sub-heat exchange modules are arranged sequentially in the vertical direction or nested internally and externally. There are four refrigerant channels and four water channels, which are connected in series or in parallel. In this case, the four compressors 300 can be arranged horizontally at the four vertices of a rectangle. All of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of this utility model. They will not be elaborated further here and should all fall within the protection scope of this application.

[0048] In some examples, such as Figure 2 , Figure 7 and Figure 8As shown, the heat exchange chamber 110 and the mounting chamber 120 have a common wall (i.e., a partition plate 140) with a connecting hole 141. The electrical control device 400 includes: an electrical control box 410, which has a heat dissipation duct 411 inside, and the heat dissipation duct 411 and the connecting hole 141 are arranged sequentially in the second direction; a heating element, which is disposed inside the electrical control box 410; and a duct cover 430, which is arranged sequentially in the second direction, and there is a through air duct 431 between the electrical control box 410 and the duct cover 430. The first port of the heat dissipation duct 411 is connected to the mounting chamber 120, the second port of the heat dissipation duct 411 is connected to the first port of the through air duct 431, and the second port of the through air duct 431 is connected to the heat exchange chamber 110 through the connecting hole 141.

[0049] Among them, such as Figure 1 , Figure 7 and Figure 8 As shown, a cooling fan 600 is installed inside the heat exchange chamber 110. The connecting hole 141 is located behind the fan blades of the cooling fan 600. When the cooling fan 600 operates, it forms a back-to-forth airflow, creating a negative pressure at the connecting hole 141. Under the suction effect of the negative pressure at the connecting hole 141, outside air enters the mounting chamber 120, then enters the cooling duct 411 from the first port, and after passing the heat-generating device, enters the air duct 431 from the second port, then passes through the air duct 431 and enters the heat exchange chamber 110 through the connecting hole 141, finally being blown out from the front of the heat exchange chamber 110, thus achieving heat dissipation and cooling of the heat-generating device. In this design, the water droplets flung off by the fan blades of the cooling fan 600 during rotation (especially in rainy weather) are unlikely to enter the air duct 431 through the connecting hole 141. Even if some of the water droplets enter the air duct 431, they are unlikely to return to the control box 410 and will turn roughly horizontally by 90 degrees. Therefore, the control device 400 is less likely to be damaged by short circuits when exposed to water.

[0050] In one embodiment, such as Figure 7 As shown, the outdoor unit of the air conditioner also includes a rain cover 700, which is located inside the heat exchange chamber 110 and installed at the connecting hole 141. An air outlet duct 710 is provided between the rain cover 700 and the partition plate 140. The connecting hole 141 is connected to the heat exchange chamber 110 through the air outlet duct 710. The outlet of the air outlet duct 710 faces downward. This solution uses the rain cover 700 to prevent water droplets thrown by the fan blades during rotation from reaching the connecting hole 141. Therefore, water droplets thrown by the fan blades are less likely to reach the electrical control box 410 from the heat exchange chamber 110 along the air outlet duct 710 and the air passage duct 431. As a result, the electrical control device 400 is less likely to be damaged by short circuit due to water.

[0051] In some embodiments, such as Figure 7 and Figure 8 As shown, the heat-generating device includes a circuit board 421 and an inductor 422. The inductor 422 is mounted inside the control box 410 via an inductor bracket 423. The circuit board 421 is located below the inductor 422. The first port of the heat dissipation duct 411 is located below the circuit board 421, and the second port of the heat dissipation duct 411 is located above the circuit board 421. The connecting hole 141 and the duct cover 430 are both located on the rear side of the control box 410. The duct cover 430 and the control box 410 together form the air duct 431. The inductor bracket 423 and the rear wall of the control box 410 together form a protective cavity 440. The protective cavity 440 is located between the heat dissipation duct 411 and the air passage duct 431. The second port of the heat dissipation duct 411 is located on the front wall of the protective cavity 440 (the front wall of the protective cavity 440 is the inductor bracket 423), and the first port of the air passage duct 431 is located on the rear wall of the protective cavity 440. This design further waterproofs the control device 400. Even if water droplets reach the air passage duct 431, it is difficult for the water droplets in the air passage duct 431 to turn roughly horizontally by 90 degrees and fall onto the inductor 422 and the circuit board 421 through the protective cavity 440. Therefore, the inductor 422 and the circuit board 421 are less likely to be damaged by short circuits when exposed to water.

[0052] In one embodiment, such as Figure 1 and Figure 7 As shown, the first port of the heat dissipation duct 411 is set as a long strip-shaped grille hole 412, so that the air passage area of ​​the first port of the heat dissipation duct 411 is larger and the air passage effect is better.

[0053] In some embodiments, such as Figure 1 , Figure 7 and Figure 8 As shown, the electrical control box 410 includes a box body 413 and a box cover. The box body 413 has a front opening, and the box cover is located on the front side of the box body 413 and is installed over the front opening of the box body 413. By opening the box cover, the electrical control device 400 can be inspected and maintained from the front opening of the box body 413 on the front side of the third installation area 123. This solution makes the inspection and maintenance process of the electrical control device 400 simpler.

[0054] In some embodiments, such as Figure 1 , Figure 7 and Figure 9 As shown, the electrical control box 410 also includes a terminal block 415. The terminal block 415 is erected in the box body 413 along the left-right direction and is located in front of the circuit board 421. One end of the terminal block 415 is hinged to the box body 413, and the other end of the terminal block 415 is detachably and fixedly connected to the box body 413. By removing the box cover, releasing the other end of the terminal block 415 (i.e., separating the other end of the terminal block 415 from the box body 413), and swinging the other end of the terminal block 415 forward, the portion of the circuit board 421 previously covered by the terminal block 415 is now exposed forward (e.g., ...). Figure 9 As shown in the figure, this allows for the inspection and repair of the portion of the circuit board 421 that is covered by the terminal block 415.

[0055] In one embodiment, the circuit board 421 includes two circuit boards arranged sequentially in a first direction (i.e., left-right direction), the terminal block 415 and one circuit board 421 are arranged facing each other in a second direction (i.e. front-back direction), and the terminal block 415 and the other circuit board 421 are arranged offset in the first direction (i.e., left-right direction).

[0056] In some examples, such as Figure 1 and Figure 2 As shown, the outdoor unit of the air conditioner also includes a fourth bracket 180 and a fifth bracket 190. The fourth bracket 180 and the fifth bracket 190 are located between the electronic control device 400 and the first mounting bracket 160. One end of the electronic control device 400 near the middle partition 140 is connected to the middle partition 140 through the fourth bracket 180, and the other end of the electronic control device 400 away from the middle partition 140 is connected to the first mounting bracket 160 through the fifth bracket 190. The second mounting area 122 is located between the electronic control device 400, the fifth bracket 190, the first mounting bracket 160 and the middle partition 140.

[0057] This application also provides an air conditioner outdoor unit, such as... Figure 10 As shown, the difference between this air conditioner outdoor unit and the air conditioner outdoor unit provided in the aforementioned embodiments is as follows:

[0058] There is one compressor 300 and one sub-heat exchange module. The installation chamber includes a first installation area 121 and a second installation area 122, but does not include a third installation area. The second installation area 122 is located above the first installation area 121. The compressor 300 and the electronic control device 400 are both located in the second installation area 122, and the compressor 300 is located between the electronic control device 400 and the middle partition 140. This air conditioner outdoor unit also has a more compact layout and occupies less space.

[0059] This application also provides an air conditioner (not shown in the figure) including the outdoor unit of the air conditioner described in any of the above embodiments.

[0060] This air conditioner possesses all the advantages of the outdoor unit provided in any of the above embodiments, which will not be repeated here.

[0061] In one embodiment, the air conditioner is a high-capacity multi-split heating unit.

[0062] In summary, the technical solution provided in this application embodiment has a forward-facing box opening. The second port of the air duct is connected to the heat exchange chamber of the outdoor unit of the air conditioner through a connecting hole. Even if water droplets thrown by the fan blades reach the connecting hole from the heat exchange chamber, they enter the air duct through the connecting hole and are unlikely to pass through the air duct again and turn roughly horizontally by 90 degrees into the electronic control device. Therefore, the electronic control device is less likely to be damaged by short circuits when exposed to water.

[0063] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "square structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0065] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. An electronic control device, characterized in that, include: An electrical control box, comprising a cover and a box body with an opening on one side, wherein the cover is fitted onto the opening of the box body, and the cover and the box body together form a heat dissipation duct; A heating element is disposed inside the housing; and A duct cover is located outside the electrical control box and on the side wall of the box body opposite to the opening. An air passage is provided between the duct cover and the box body. The first port of the heat dissipation air passage is connected to the outside of the electrical control box, and the second port of the heat dissipation air passage is connected to the first port of the air passage. The second port of the air passage is connected to the outside of the electrical control box.

2. The electronic control device according to claim 1, characterized in that, The heat-generating device includes a circuit board and an inductor. The circuit board is located below the inductor, the first port of the heat dissipation duct is located below the circuit board, and the second port of the heat dissipation duct is located above the circuit board.

3. The electronic control device according to claim 2, characterized in that, The inductor is mounted on the side wall of the box opposite the opening via an inductor bracket. The inductor bracket and the side wall of the box opposite the opening together form a protective cavity. The protective cavity is located between the heat dissipation duct and the air passage duct. The second port of the heat dissipation duct and the first port of the air passage duct are both located on the cavity wall of the protective cavity.

4. The electronic control device according to claim 3, characterized in that, Both the second port of the heat dissipation duct and the first port of the air passage duct are elongated grille holes.

5. The electronic control device according to claim 2, characterized in that, The electrical control box also includes a terminal block, which is located inside the box and on the side of the circuit board facing the opening. One end of the terminal block is hinged to the box body, and the other end of the terminal block is detachably fixed to the box body.

6. The electronic control device according to any one of claims 1 to 5, characterized in that, The air duct cover and the side wall of the box body opposite the opening together form the air passage duct.

7. An outdoor unit for an air conditioner, characterized in that, The device includes a housing and an electronic control device as described in any one of claims 1 to 6. The housing has a heat exchange chamber and an installation chamber arranged sequentially in a first direction. The heat exchange chamber and the installation chamber share a common wall. The upper part of the common wall is provided with a connecting hole. The electronic control device is located in the upper part of the installation chamber. The second port of the air duct is connected to the heat exchange chamber through the connecting hole. The first direction intersects with the vertical direction.

8. The outdoor unit of the air conditioner according to claim 7, characterized in that, The first direction is the left-right direction, the opening of the box body faces the front of the mounting chamber, and the connecting hole and the air duct cover are both located on the rear side of the box body.

9. The outdoor unit of the air conditioner according to claim 7, characterized in that, Also includes: A rain cover is located inside the heat exchange chamber and at the connecting hole. An air outlet duct is provided between the rain cover and the common wall. The connecting hole is connected to the heat exchange chamber through the air outlet duct.

10. An air conditioner, characterized in that, Includes an outdoor air conditioning unit as described in any one of claims 7 to 9.

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