Heating and ventilation system and electric control box thereof

Abstract

The embodiment of the invention provides a heating and ventilation system and an electric control box thereof, the electric control box comprises a box body, an isolation cover and a wire holder, an inner cavity is formed in the box body, at least part of the isolation cover is located in the inner cavity, and a mounting cavity formed by the isolation cover is isolated from an interval outside the isolation cover and located in the inner cavity, so that external dust and other impurities are difficult to enter the interval outside the isolation cover and located in the inner cavity; therefore, the possibility of short circuit caused by accumulation of dust and other impurities is reduced, and the normal operation environment of internal electrical components is improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular to a HVAC system and an electric control box thereof. Background Art

[0002] The electrical components in the electric control box need to be wired to the outside world, so holes need to be opened on the side walls of the electric control box. This will cause some dust to enter the interior of the electric control box through the holes, which may affect the normal operation of the internal electrical components. Summary of the invention

[0003] The present application provides a HVAC system and a junction box thereof, wherein an installation cavity formed by a partition cover is isolated from an area outside the partition cover and located in an inner cavity, making it difficult for dust and other impurities to enter the area outside the partition cover and located in the inner cavity, thereby improving the normal operating environment of internal electrical components.

[0004] In a first aspect, an embodiment of the present application provides an electric control box for a HVAC system, comprising:

[0005] The box body is formed with an inner cavity and a mounting opening communicated with the inner cavity;

[0006] A partition cover is disposed in the inner cavity and covers the mounting opening, the partition cover forms a mounting cavity, and the mounting cavity is isolated from a region outside the partition cover and located in the inner cavity; and

[0007] The wiring seat is at least partially located in the mounting cavity.

[0008] In some embodiments, the wiring seat is provided with a first wiring portion and a second wiring portion, and the second wiring portion is electrically connected to the first wiring portion.

[0009] The second wiring part is separated from the first wiring part by a partition cover; or, the second wiring part and the first wiring part are both located in the installation cavity, a threading hole is provided on the partition cover, and a sealing member is provided in the threading hole.

[0010] In some embodiments, the shroud comprises:

[0011] A base, the wiring seat is fixed relative to the base, and the base is formed with a wire passing opening; and

[0012] The cover plate is movably connected to the base, and has a first position and a second position. In the first position, the cover plate is connected to the base and encloses a mounting cavity, and the mounting cavity is connected to the wire port; in the second position, the cover plate exposes at least a portion of the wiring seat.

[0013] In some embodiments, the shroud further comprises:

[0014] The baffle is fixed relative to the base. When the cover plate is in the first position, the baffle and the cover plate are located on the same side of the base, and the baffle is located on the side where the wire passing opening is located. A wire passing cavity connected to the installation cavity is formed between the baffle and the base, and the wire passing cavity forms an opening on the side away from the wire passing opening.

[0015] In some embodiments, the shroud further comprises:

[0016] The lap plate is fixed relative to the cover plate. When the cover plate is in a first position, the lap plate is lapped on the baffle plate. When the cover plate is in a second position, the lap plate is separated from the baffle plate.

[0017] In some of the embodiments, the baffle forms a lap groove on a side away from the wire passing cavity, and when the cover plate is in the first position, the lap plate is at least partially located in the lap groove and fits against the inner wall of the lap groove.

[0018] In some embodiments, the overlapping groove extends to an end surface of the baffle facing away from the opening;

[0019] And / or, when the cover plate is in the first position, the cover plate is in contact with an end surface of the baffle plate facing away from the opening.

[0020] In some embodiments, the cover plate is rotatably connected to the base at one side of the base, and the cover plate is detachably connected to the base at the other side of the base.

[0021] In some embodiments, it also includes:

[0022] A partition is provided in the inner cavity of the box body and divides the inner cavity into a first chamber and a second chamber. A first vent and a second vent are provided at intervals on the partition, and the first vent and the second vent are both connected to the first chamber and the second chamber.

[0023] An electronic device is disposed in the first chamber;

[0024] a heat sink, at least partially disposed in the second chamber;

[0025] a heat dissipation fan, disposed in one of the first chamber and the second chamber, for circulating air between the first chamber and the second chamber;

[0026] The installation port is communicated with the first chamber, and the partition cover is located in the first chamber.

[0027] In some of the embodiments, the shroud is located on a side of the first chamber.

[0028] In some embodiments, the cooling fan and the electronic components are located in the first chamber;

[0029] The cooling fan comprises a first cooling fan and a second cooling fan, the first cooling fan is arranged at one side of the first chamber along the first direction, the second cooling fan is arranged at the other side of the first chamber along the first direction, and the electronic device is arranged between the first cooling fan and the second cooling fan;

[0030] The shield is arranged at a side of the first cooling fan away from the second cooling fan along the first direction, or the shield is arranged at a side of the second cooling fan away from the first cooling fan along the first direction.

[0031] In some embodiments, the heat sink includes a heat exchange body and a heat dissipation portion fixed relative to the heat exchange body, and the heat exchange body is located in the second chamber;

[0032] The partition is provided with a heat exchange port communicating with the first chamber and the second chamber;

[0033] Wherein, the heat dissipation part is arranged adjacent to the heat exchange port.

[0034] In a second aspect, an embodiment of the present application provides a HVAC system, including:

[0035] The electric control box mentioned above;

[0036] compressor;

[0037] outdoor heat exchanger; and

[0038] The indoor heat exchanger, the compressor, the outdoor heat exchanger, the electric control box and the indoor heat exchanger are connected in sequence.

[0039] The HVAC system and its junction box provided in the embodiment of the present application include a box body, a partition cover and a terminal block. The box body forms an inner cavity, and the partition cover is at least partially located in the inner cavity. The installation cavity formed by the partition cover is isolated from the area outside the partition cover and located in the inner cavity. In this way, dust and other impurities from the outside are difficult to enter the area outside the partition cover and located in the inner cavity, thereby improving the normal operating environment of the internal electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is a schematic diagram of the structure of a HVAC system provided in one embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of the structure inside the electric control box in one embodiment of the present application;

[0043] Figure 3 For this application Figure 2 A schematic diagram of another perspective of the structure shown in FIG.

[0044] Figure 4 This is a schematic diagram of the structure inside the electric control box in one embodiment of the present application (the arrow indicates the wind direction);

[0045] Figure 5 For this application Figure 2 A structural schematic diagram of another perspective of the structure shown;

[0046] Figure 6 This is a schematic diagram of the exploded structure of an electric control box in one embodiment of the present application;

[0047] Figure 7 For this application Figure 6 A structural schematic diagram of another perspective of the structure shown;

[0048] Figure 8 For this application Figure 6 A schematic diagram of the structure of the partition in the structure shown;

[0049] Fig. 9 This is a schematic structural diagram of a heat exchange body in one embodiment of the present application;

[0050] Fig.10 This is a structural schematic diagram of a cover plate in an embodiment of the present application in a second position;

[0051] Fig.11 This is a structural schematic diagram of a cover plate in an embodiment of the present application in a first position;

[0052] Fig.12 For this application Fig.10 A schematic structural diagram of another perspective of the structure shown;

[0053] Fig.13 This is a schematic structural diagram of a cover plate in another embodiment of the present application in a second position;

[0054] Fig.14 This is a structural schematic diagram of a cover plate in another embodiment of the present application in a first position;

[0055] Fig.15 This is a schematic diagram of the structure of an electric control box in one embodiment of the present application;

[0056] Fig.16 For this application Fig.15 Schematic diagram of the enlarged structure of part A in the middle.

[0057] Description of the accompanying drawings:

[0058] 1000, HVAC system; 1000a, first heat exchange flow path; 1000b, second heat exchange flow path;

[0059] 100. Electric control box;

[0060] 10, box body; 10a, inner cavity; 11a, first chamber; 11b, second chamber; 10b, installation port; 10c, drainage port;

[0061] 20, shield; 20a, installation cavity; 20b, wire opening; 20c, wire cavity; 20d, opening; 21, base; 22, cover plate; 23, baffle plate; 23a, lap groove; 24, lap plate;

[0062] 30. Wiring seat; 31. First wiring part; 32. Second wiring part;

[0063] 40, partition; 40a, first vent; 40b, second vent; 40c, heat exchange port;

[0064] 50. electronic device; 51. first electronic device; 52. second electronic device;

[0065] 60. Radiator; 61. Heat exchange main body; 611. First heat exchange pipeline; 612. Second heat exchange pipeline; 613. Main inlet pipe; 614. Main outlet pipe; 615. Auxiliary inlet pipe; 616. Auxiliary outlet pipe; 62. Heat dissipation unit;

[0066] 70. cooling fan; 71. first cooling fan; 72. second cooling fan;

[0067] 80, plug body; 80a, wire passage; 90, guide plate;

[0068] 200. Outdoor heat exchanger;

[0069] 300. Indoor heat exchanger;

[0070] 400. Compressor;

[0071] 500, a first expansion valve;

[0072] 600, second expansion valve;

[0073] 700, gas-liquid separator;

[0074] 800, four-way valve;

[0075] XX, first direction; YY, second direction; ZZ, third direction. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0077] An embodiment of the present application provides a HVAC system 1000, which includes air conditioners, multi-split units, heat pumps and other systems for heating or cooling. The heating or cooling system can heat a heat exchange medium, which can be water, ethylene glycol or other heat exchange medium. The source of the water can be municipal water or drinking water. In this embodiment, the heat exchange medium in the HVAC system 1000 is municipal water for illustrative description.

[0078] The HVAC system 1000 generally includes HVAC equipment, which refers to equipment that can be used for regulating the temperature of air or water. For example, the HVAC equipment may include but is not limited to air conditioning equipment, heat pump equipment, multi-split units, swimming pool machines or water heaters. The HVAC equipment generally includes a water circuit component and a refrigerant component. The water circuit component is used to transport water. The refrigerant component is used to transport refrigerant, wherein the refrigerant component includes a refrigerant pipeline for transporting the refrigerant. Generally, the refrigerant component in the HVAC equipment may include a compressor 400, a condenser, an evaporator, etc. The refrigerant pipeline may be connected between the compressor 400 and the condenser, and between the compressor 400 and the evaporator. The refrigerant pipeline may form a refrigerant flow path with the compressor 400, the condenser and the evaporator, so as to utilize the phase change of the refrigerant in the refrigerant flow path to heat the water in the water circuit component.

[0079] See also Figure 1 The HVAC system 1000 includes an outdoor heat exchanger 200, an indoor heat exchanger 300, a compressor 400, a first expansion valve 500, a second expansion valve 600 and an electric control box 100. The HVAC system 1000 has a first heat exchange flow path 1000a and a second heat exchange flow path 1000b, and the HVAC system 1000 has a cooling mode and a heating mode.

[0080] In cooling mode, the path of the refrigerant flow is:

[0081] Compressor 400 - outdoor heat exchanger 200 - electric control box 100 - outdoor heat exchanger 200 - indoor heat exchanger 300 - compressor 400 .

[0082] In cooling mode, refrigerant exists in both the first heat exchange flow path 1000a and the second heat exchange flow path 1000b, wherein the path of the refrigerant flow on the first heat exchange flow path 1000a is: compressor 400-outdoor heat exchanger 200-electric control box 100-first expansion valve 500-indoor heat exchanger 300-compressor 400;

[0083] The path of the refrigerant flow on the second heat exchange flow path 1000b is: compressor 400-outdoor heat exchanger 200-electric control box 100-second expansion valve 600-compressor 400;

[0084] The first heat exchange flow path 1000a is a main flow path, and the second heat exchange flow path 1000b is an auxiliary flow path. Since the compressor 400 is mainly used to compress gas, on the second heat exchange flow path 1000b, Figure 1 As shown, a gas-liquid separator 700 is further provided between the second expansion valve 600 and the compressor 400 to filter the liquid refrigerant.

[0085] In the heating mode, the path of the refrigerant flow on the first heat exchange flow path 1000a is: compressor 400-indoor heat exchanger 300-first expansion valve 500-electric control box 100-outdoor heat exchanger 200-compressor 400;

[0086] The path of the refrigerant flow on the second heat exchange flow path 1000b is: compressor 400-indoor heat exchanger 300-first expansion valve 500-electric control box 100-second expansion valve 600-gas-liquid separator 700-compressor 400;

[0087] It should be noted that the HVAC system 1000 may also include a four-way valve 800, which is used to switch the forward and reverse flow directions of the refrigerant to achieve the switching of the HVAC system 1000 between the cooling mode and the heating mode. In the embodiment of the present application, the HVAC system 1000 will be exemplified in the cooling mode.

[0088] For example, Figure 1 In the cooling mode of the HVAC system 1000 shown, when the refrigerant passes through the outdoor heat exchanger 200 and enters the electrical control box 100, the refrigerant is a medium-pressure and medium-temperature liquid phase refrigerant flow, and then part of the refrigerant enters the second heat exchange flow path 1000b through the first heat exchange flow path 1000a, and passes through the second expansion valve 600 to become a gas-liquid two-phase refrigerant. At this time, the refrigerant on the first heat exchange flow path 1000a is defined as the first refrigerant, and the refrigerant on the second heat exchange flow path 1000b is defined as the second refrigerant.

[0089] In addition, the first heat exchange flow path 1000a and the second heat exchange flow path 1000b are arranged adjacent to each other, so the second refrigerant absorbs heat from the first refrigerant flow on the first heat exchange flow path 1000a while flowing along the second heat exchange flow path 1000b, and further vaporizes, so that the first refrigerant is further supercooled, thereby improving the refrigeration efficiency.

[0090] It is worth noting that the "first" and "second" of the first heat exchange flow path 1000a and the second heat exchange flow path 1000b and the first refrigerant and the second refrigerant flow are only used to distinguish different heat exchange flow paths and refrigerants, and should not be regarded as limiting the specific application of the heat exchange flow paths and refrigerants. For example, in other embodiments or working modes, the first refrigerant flowing through the first heat exchange flow path 1000a can absorb heat from the second refrigerant in the second heat exchange flow path 1000b, and the states of the first refrigerant and the second refrigerant are not limited to the liquid phase or gas-liquid two-phase defined above.

[0091] refer to Figure 2-3 An electric control box 100 is usually provided in the HVAC equipment so as to control the water circuit components through the electric control box 100. The electric control box 100 includes a box body 10, a partition cover 20 and a wiring socket 30.

[0092] The box body 10 generally includes multiple side shells, such as an upper side shell, a lower side shell, a front side shell and a rear side shell, which are connected together by screws or snaps. The multiple side shells are enclosed to form an inner cavity 10a, and some electrical components can be placed in the inner cavity 10a. An installation port 10b is opened on one of the side shells. Generally speaking, the side shell is the lower side shell. The setting of the installation port 10b allows the wires to pass through the installation port 10b to electrically connect the external power supply equipment with the electrical components in the inner cavity 10a.

[0093] See also Figure 3-4 For example, the box body 10 may be a rectangular box body. Of course, the shape of the box body 10 is not limited to the rectangle mentioned above, and it may also be other shapes. For example, the box body 10 may also be a cylindrical box body or a special-shaped box body. In addition, when assembling the electric control box, any suitable surface may be selected for fixing.

[0094] The partition cover 20 is disposed in the inner cavity 10a and covers the mounting opening 10b. The partition cover 20 forms a mounting cavity 20a, and the mounting cavity 20a is isolated from the area outside the partition cover 20 and located in the inner cavity 10a.

[0095] The wiring base 30 is at least partially located in the installation cavity 20a. The main function of the wiring base 30 is to connect wires, allowing the wires of the external power supply equipment to be connected to the wires of the electronic device in the inner cavity 10a. Specifically, the wires of the external power supply equipment enter the installation cavity 20a through the installation opening 10b and are connected to the corresponding wiring terminals on the wiring base 30.

[0096] In this embodiment, since the external wires are only electrically connected to the terminal block 30 in the installation cavity 20a, and the installation cavity 20a is isolated from the area outside the partition cover 20 and located in the inner cavity 10a, it is difficult for external dust and other impurities to enter the area outside the partition cover 20 and located in the inner cavity 10a through the connection point between the external wires and the terminal block 30, thereby avoiding the accumulation of dust and other impurities that cause circuit short circuits, thereby improving the normal operating environment of internal electrical components.

[0097] See also Figure 1-2 In the embodiment of the present application, the partition cover 20 is located in the inner cavity 10a, so that the appearance of the entire electric control box 100 looks neat and generous, which facilitates the modular design of the entire electric control box 100. In addition, when the partition cover 20 is located in the inner cavity 10a, it can also reduce the interference and damage of the external environment to the terminal block 30 located in the installation cavity 20a.

[0098] In the electric control box 100, refer to Figure 5-6 The electric control box 100 further includes a partition 40 , an electronic device 50 (also called an electrical component), a radiator 60 and a cooling fan 70 .

[0099] The partition 40 is arranged in the inner cavity 10a of the box body 10, and divides the inner cavity 10a into a first chamber 11a and a second chamber 11b. The partition 40 is provided with a first vent 40a and a second vent 40b which are spaced apart. The first vent 40a and the second vent 40b are connected to the first chamber 11a and the second chamber 11b. The partition 40 can be fixed to the box body 10 by screws or welding, and the exchange of airflow between the first chamber 11a and the second chamber 11b is achieved through the first vent 40a and the second vent 40b. One of them is a low-temperature chamber and the other is a high-temperature chamber. At least part of the radiator 60 (not shown in the figure) is provided in the low-temperature chamber, and the electronic device 50 which generates heat during operation is provided in the high-temperature chamber.

[0100] The electronic device 50 is disposed in the first chamber 11 a . The chamber where the electronic device 50 is located is a high-temperature chamber, and the second chamber 11 b is a low-temperature chamber.

[0101] The cooling fan 70 is disposed in one of the first chamber 11a and the second chamber 11b, and is used to circulate air between the first chamber 11a and the second chamber 11b. The number of cooling fans 70 can be set to multiple, and can be distributed according to the position of the electronic device 50 so that the circulating airflow passes through the electronic device 50 more.

[0102] Through the guiding effect of the heat dissipation fan 70 , airflow circulates in the first chamber 11 a and the second chamber 11 b , thereby cooling the electronic device 50 .

[0103] In addition, in this embodiment, see Figure 6 The first vent 40a is arranged at the upper end of the second vent 40b. In this way, the electronic device 50 generates heat so that the temperature of the air in the first chamber 11a is relatively high. The heat dissipation fan 70 sends the hot air into the second vent 40b. Since the density of the hot air is relatively small, the hot air naturally rises to contact the radiator 60 arranged in the second chamber 11b. The radiator 60 is used to cool the hot air to form cold air. The cold air flows into the first chamber 11a from the first vent 40a. The heat dissipation fan 70 is used to accelerate the cold air so as to use the cold air to cool the electronic device 50 arranged in the first chamber 11a. The temperature of the cold air increases after heat exchange with the electronic device 50. The cold air with increased temperature further continues to enter the second vent 40b under the action of the heat dissipation fan 70, and circulates in this way. Then, the electronic device 50 arranged in the inner chamber 10a is cooled by internal circulation, and no negative pressure difference is generated with the external environment, thereby sucking impurities such as dust and iron filings from the outside into the first chamber 11a and the second chamber 11b.

[0104] The cooling fan 70 is preferably disposed in the first chamber 11a, which can accelerate the flow speed of the air in the first chamber 11a, thereby accelerating the circulation speed of the air between the first chamber 11a and the second chamber 11b, thereby improving the cooling efficiency of the electronic device 50.

[0105] For further information, please refer to Figure 6 The cooling fan 70 may be disposed near the first vent 40 a so that the cold air at the top of the first chamber 11 a can enter the second chamber 11 b in time, and the cooling fan 70 may accelerate the cold air to improve the heat dissipation efficiency of the electronic device 50 .

[0106] An air guide cover (not shown) may also be provided in the first chamber 11 a . The air guide cover is provided on the cooling fan 70 to guide the air blown out by the cooling fan 70 so that the air outlet direction of the cooling fan 70 is toward the electronic device 50 .

[0107] In order to facilitate the connection between the wiring base 30 and the electronic device 50 in the inner cavity 10a and to prevent the external environment from interfering with and damaging the wiring base 30, the wiring base 30 and the shield 40 are both located in the inner cavity 10a.

[0108] It should be understood that in the embodiments of this application, please refer to Figure 6-7 The radiator 60 includes a heat exchange body 61, and the refrigerant flowing through the heat exchange body 61 can exchange heat with the heat generated by the electronic device 50, wherein the heat exchange body 61 is located in the second chamber 11b, and the second chamber 11b can have sufficient space for the heat exchange body 61 to be distributed.

[0109] In the embodiment of the present application, the refrigerant flowing through the HVAC system 1000 can exchange heat with the airflow inside the electric control box 100 , and the airflow inside the electric control box 100 can be cooled without providing heat dissipation holes on the electric control box 100 .

[0110] Further, see Figure 6-7 The heat exchange body 61 includes a first heat exchange pipe 611, a second heat exchange pipe 612, a main inlet pipe 613, a main outlet pipe 614, an auxiliary inlet pipe 615 and an auxiliary outlet pipe 616, wherein the main inlet pipe 613, the first heat exchange pipe 611 and the main outlet pipe 614 are located on the first heat exchange flow path 1000a. In the cooling mode, the first refrigerant flows through the main inlet pipe 613, the first heat exchange pipe 611, and the main outlet pipe 614 in sequence, and the second refrigerant flows through the auxiliary inlet pipe 615, the second heat exchange pipe 612 and the auxiliary outlet pipe 616 in sequence.

[0111] In order to increase the heat exchange efficiency between the first refrigerant and the second refrigerant, the first heat exchange pipe 611 and the second heat exchange pipe 612 are both provided with a plurality of main inlet pipes 613, main outlet pipes 614, auxiliary inlet pipes 615 and auxiliary outlet pipes 616, which also play the role of collecting flow. Fig. 9 The shown orientation is for reference. Along the second direction YY, i.e., the front-to-back direction, the first heat exchange pipes 611 and the second heat exchange pipes 612 are alternately distributed. Specifically in the embodiment of the present application, the second heat exchange pipes 612 are arranged on both sides of the first heat exchange pipes 611 .

[0112] Taking into account the miniaturized design of the entire electric control box 100, the first heat exchange pipe 611 and the second heat exchange pipe 612 are extended and distributed along the first direction XX, and the main inlet pipe 613, the main outlet pipe 614, the auxiliary inlet pipe 615 and the auxiliary outlet pipe 616 are all arranged at both ends of the first heat exchange pipe 611 and the second heat exchange pipe 612 along the first direction XX, wherein the main inlet pipe 613 and the auxiliary outlet pipe 616 are located upstream of the first heat exchange pipe 611, and the main outlet pipe 614 and the auxiliary inlet pipe 615 are located downstream of the first heat exchange pipe 611. In this way, the internal space of the electric control box 100 can be reasonably utilized, making the internal structure compact, which is conducive to the miniaturized design of the electric control box 100.

[0113] In some embodiments, in order to shorten the overall length of the heat exchange body 61, the first heat exchange pipe 611 and the second heat exchange pipe 612 can be bent at both ends along the first direction XX toward the second direction YY. The overall length of the heat exchange body 61 can be shortened while ensuring that the heat exchange body 61 has a sufficiently long extension length. The length of the electrical control box 100 that cooperates with the radiator 60 along the first direction XX can then be shortened to reduce the volume of the electrical control box 100.

[0114] Furthermore, in order to improve the heat exchange efficiency, in the embodiment of the present application, the radiator 60 includes a heat dissipation portion 62 fixed relative to the heat exchange body 61, that is, the heat dissipation portion 62 can be fixed on the partition 40 or on the heat exchange body 61, and in order to improve the heat exchange efficiency between the heat exchange body 61 and the heat dissipation portion 62, the heat dissipation portion 62 is designed to fit the heat exchange body 61, which can further improve the heat exchange efficiency.

[0115] Please continue to read Figure 6-7 A heat exchange port 40c connecting the first chamber 11a and the second chamber 11b is provided on the partition 40, and the heat dissipation portion 62 is arranged adjacent to the heat exchange port 40c, so that the heat dissipation portion 62 can more quickly exchange heat with the gas in the first chamber 11a, that is, the electronic device 50 can be quickly cooled down.

[0116] In some embodiments, the heat dissipation portion 62 is a plate-shaped structure, and the heat dissipation portion 62 is attached to the main surface of the heat exchange body 61 to increase the contact area of ​​the heat dissipation portion 62 and the heat exchange body 61, thereby improving the heat conduction efficiency.

[0117] On the basis that the heat dissipation part 62 is a plate-shaped structure, the heat dissipation part 62 can be made of a metal plate or alloy plate with good thermal conductivity. For example, the heat dissipation part 62 can be made of an aluminum plate, a copper plate, an aluminum alloy plate, etc. to improve the heat conduction efficiency.

[0118] In some other implementations, the heat dissipation portion 62 is a heat dissipation fin, which can be connected to the surface of the heat exchange body 61 by welding, bonding or fastening. By providing a small number of heat dissipation fins with a large surface area, on the one hand, it is easy to connect the heat dissipation fins to the heat exchange body 61, thereby improving the installation efficiency of the heat dissipation fins and the heat exchange body 61; on the other hand, it can also increase the contact area between the heat dissipation fins and the air, thereby enhancing the heat exchange effect.

[0119] It is understandable that when the heat dissipation portion 62 is disposed adjacent to the heat exchange port 40c, the electronic device 50 in the first chamber 11a is also disposed adjacent to the heat exchange port 40c, thereby greatly improving the heat exchange efficiency.

[0120] The flow of the refrigerant makes the temperature of the heat dissipation part 62 lower. Since the electronic device 50 in the electric control box 100 generates heat, the temperature in the inner cavity of the electric control box 100 is higher. When the air with higher temperature in the electric control box 100 contacts the heat dissipation part 62, it is easy to condense, and then condensed water is formed on the surface of the electronic device 50. If the generated condensed water flows to the position of the electronic device 50, it is easy to cause the electronic device 50 to short-circuit or be damaged, and more seriously, it will cause a fire hazard.

[0121] Therefore, the first heat exchange flow path 1000a in the heat exchange body 61 can be divided into an upstream end and a downstream end along the flow direction of the first refrigerant, and the second heat exchange flow path 1000b in the heat exchange body 61 can also be divided into an upstream end and a downstream end along the flow direction of the first refrigerant. Figure 6-7 As shown, along the first direction XX, the upstream end of the first heat exchange flow path 1000a and the downstream end of the second heat exchange flow path 1000b are on the same side, and the downstream end of the first heat exchange flow path 1000a and the upstream end of the second heat exchange flow path 1000b are on the same side, and the second refrigerant can absorb heat from the first heat exchange flow path 1000a during the flow process, so the temperature of the first heat exchange flow path 1000a gradually decreases from the upstream end to the downstream end, that is, the temperature of the upstream end of the first heat exchange flow path 1000a is higher than the temperature of the downstream end. Similarly, the temperature of the second heat exchange flow path 1000b gradually increases from the upstream end to the downstream end, that is, the temperature of the upstream end of the second heat exchange flow path 1000b is lower than the temperature of the downstream end.

[0122] Since the temperature of the upstream end of the first heat exchange path 1000a and the downstream end of the second heat exchange path 1000b are higher and are on the same side, the temperature on this side is higher and the temperature difference between this side and the hot air is smaller, so no condensation water is generated or the amount of condensation water generated is small. By setting the electronic device 50 close to the upstream end of the first heat exchange path 1000a, the probability of the electronic device 50 coming into contact with condensation water can be reduced, thereby protecting the electronic device 50.

[0123] In addition, due to the presence of the partition 40, the electronic device 50 is located in the first chamber 11a, and the heat exchange body 61 is located in the second chamber 11b. In this way, even if there is condensed water on the heat exchange body 61, it is difficult to enter the first chamber 11a, thereby ensuring the normal operating environment of the electronic device 50.

[0124] Furthermore, if a large amount of condensed water is generated on the heat exchange body 61, in order to prevent the condensed water from corroding the housing of the electric control box 100, in the embodiment of the present application, Figure 8 As shown, a guide plate 90 can be provided in the electric control box 100, specifically, a guide plate 90 is provided in the second chamber 11b, and the guide plate 90 is provided at the lower side of the heat exchange body 61 along the gravity direction, and is used to collect condensed water dripping from the heat exchange body 61. The provision of the guide plate 90 can not only reduce the height of the condensed water dripping, thereby reducing the noise, but also the guide plate 90 has a certain accumulation effect on the condensed water, which is convenient for the condensed water to be discharged from the electric control box 100 after converging.

[0125] Furthermore, in order to facilitate the timely discharge of condensed water on the guide plate 90 from the electric control box 100, a drainage port 10c may be provided on the bottom wall of the box body. Figure 8As shown, the guide plate 90 is tilted relative to the bottom wall of the electric control box 100, and the condensed water is guided by the guide plate 90 and then discharged from the electric control box 100 through the drain port 10c.

[0126] Since the heat generated by the electronic device 50 is relatively large, it is difficult to heat all the gas through the heat dissipation portion 62. Therefore, in order to quickly remove the heat of the electronic device 50, in the embodiment of the present application, please refer to Figure 6 Since the electronic device 50 is located in the first chamber 11a, the cooling fan 70 is located in the first chamber 11a. In this way, the cooling fan 70 can quickly blow the heat of the electronic device 50 from the first chamber 11a to the second chamber 11b, thereby exchanging heat with the heat exchange body 61 and the heat dissipation part 62.

[0127] More specifically, the cooling fan 70 includes a first cooling fan 71 and a second cooling fan 72. The first cooling fan 71 is arranged on one side of the first chamber 11a along the first direction XX, and the second cooling fan 72 is arranged on the other side of the first chamber 11a along the first direction XX. The electronic device 50 is arranged between the first cooling fan 71 and the second cooling fan 72.

[0128] like Figure 6 As shown, there are multiple electronic devices 50, wherein multiple electronic devices 50 are installed on the partition 40 and distributed along the third direction ZZ, wherein the first electronic device 51 is located at the upper end, and the second electronic device 52 is located at the lower end, the air outlet side of the first cooling fan 71 faces the first electronic device 51, and the air outlet side of the second cooling fan 72 faces the second electronic device 52, and along the third direction ZZ, the first cooling fan 71 is located at the upper end of the second cooling fan 72, wherein the first direction XX, the second direction YY and the third direction ZZ are perpendicular to each other.

[0129] Therefore, after the first cooling fan 71 blows the cold air to the first electronic device 51, it blows the cold air to the second electronic device 52 through the second cooling fan 72. In this way, the airflow can circulate in the first chamber 11a and the second chamber 11b through the first cooling fan 71 and the second cooling fan 72, thereby increasing the cooling speed of the electronic device 50.

[0130] See also Figure 2-4Furthermore, the shield 20 is located at the side of the first chamber 11a, and can be arranged on the side of the first cooling fan 71 away from the second cooling fan 72 along the first direction XX, or can be arranged on the side of the second cooling fan 72 away from the first cooling fan 71 along the first direction XX. In this way, the existence of the shield 20 will not block the flow of the circulating airflow and will not affect the heat dissipation of the electronic device 50. In order to make the overall structure of the shield 20 more compact, and to make the remaining space of the first chamber 11a larger, so as to accommodate more electronic devices 50 or reserve more space, so as to facilitate possible future expansion or maintenance, Figure 3 The orientation shown is for reference only, with the shroud 20 being located at the lower left corner of the first chamber 11 a .

[0131] In addition, based on the position of the partition cover 20 at the lower left corner of the first chamber 11a, the terminal block can be closer to the installation port, which is convenient for wiring the terminal block with the outside. On the other hand, the partition cover 20 and the electronic device 50 are staggered, which also makes the internal structure of the electric control box compact, facilitating the miniaturization design of the electric control box.

[0132] In this example, see Figure 10-11 The wiring socket 30 in the electric control box 100 is provided with a first wiring part 31 and a second wiring part 32. The second wiring part 32 is electrically connected to the first wiring part 31. The first wiring part 31 is electrically connected to the power supply equipment located outside the electric control box 100 through wires, and the second wiring part 32 is electrically connected to the electronic device 50 located in the inner cavity 10a of the electric control box 100 through wires. In this way, the power transmission of the power supply equipment inside and outside the electric control box 100 can be realized.

[0133] In one embodiment, please continue to refer to Figure 9-10 The second wiring part 32 is separated from the first wiring part 31 by the partition cover 20, that is, the second wiring part 32 is located outside the installation cavity 20a, and the first wiring part 31 is located inside the installation cavity 20a. The partition cover 20 does not cover the second wiring part 32, and only needs to cover the first wiring part 31. In this way, for the junction box 100, the space occupied by the entire first wiring part 31 is smaller, and the partition cover 20 only needs to cover the first wiring part 31, thereby reducing the manufacturing cost.

[0134] In another embodiment, see Figure 12-14 The second wiring portion 32 and the first wiring portion 31 are both located in the installation cavity 20a, and a threading hole (not shown in the figure) is provided on the partition cover 20, and a sealing member (not shown in the figure) is provided in the threading hole. Since the first wiring portion 31 and the second wiring portion 32 are not separated by the partition cover 20, the manufacturing process of the entire junction box 100 is simplified, and the overall manufacturing process difficulty is reduced.

[0135] Based on the above, the wire threading hole is used for the wires connecting the electrical components of the inner cavity 10a and the second wiring part 32 to pass through. In order to prevent external dust from entering the inner cavity 10a through the wire threading hole, a sealing member is provided in the wire threading hole. The sealing member can be an elastic rubber plug such as a rubber dust plug or a silicone dust plug, or can be an elastic sealing ring. The rubber dust plug and the sealing ring can be embedded in the wire threading hole, or fixed to the wire threading hole by glue or the like.

[0136] Exemplarily, the seal of this embodiment adopts a rubber dust plug, and a channel is formed inside the seal for the power line to pass through. When not squeezed, the cross-sectional area of ​​the internal channel is larger than the cross-sectional area of ​​the wire. When the wire passes through the internal channel of the rubber dust plug, the inner wall of the rubber dust plug can fit tightly with the wire under the action of elasticity, and the outer wall of the rubber dust plug can also fit together with the inner wall of the threading hole. This can maximize the sealing effect of the seal, thereby preventing dust from entering the inner cavity 10a through the threading hole.

[0137] It should be understood that in order to ensure that the entire terminal block 30 is not disturbed or damaged by the external environment, the entire terminal block 30 is located in the inner cavity 10a. Specifically, in this embodiment, the first terminal portion 31 and the second terminal portion 32 are preferably located in the inner cavity 10a, and the first terminal portion 31 is also located in the installation cavity 20a, while the second terminal portion 32 is located outside the installation cavity 20a.

[0138] In this example, see Figure 11-12 The partition cover 20 includes a base 21 and a cover plate 22 .

[0139] The base 21 can be fixed to the box body 10 by means of screws, bolts or snaps, and the terminal block 30 can be fixedly connected by means of screws, bolts or snaps, or can be connected by integral injection molding. In the present embodiment, it is preferred to adopt an integral injection molding connection method, that is, the base 21 and the terminal block 30 are integrally injection molded. In this way, the base 21 and the terminal block 30 have higher structural stability. Secondly, the integrally injection molded terminal block 30 has a neat and beautiful appearance, without redundant screws, bolts or snaps and other connectors, which improves the overall aesthetics. At the same time, the neat appearance is also conducive to keeping the product clean and reducing the accumulation of impurities such as dust. On the other hand, the integrally injection molded terminal block 30 has better sealing performance, which can effectively prevent the intrusion of external factors such as moisture and dust, and protect the normal operation of internal electrical components.

[0140] In addition, since the wiring socket 30 and the base 21 are integrally injection molded, the base 21 and the wiring socket 30 are assembled during the manufacturing process, so that they can be assembled into the electric control box 100 together, and the assembly is more convenient.

[0141] The base is formed with a wire passing opening, the cover plate 22 is movably connected to the base 21, and the cover plate 22 has a first position and a second position. In the first position, the cover plate 22 is connected to the base 21 and encloses an installation cavity 20a, and the installation cavity 20a is connected to the wire passing opening 20b; in the second position, the cover plate 22 exposes at least a portion of the terminal block 30.

[0142] When the cover 22 is in the first position, the cover 22 and the base 21 cooperate to provide good protection for the terminal block 30, and can protect the terminal block 30 and prevent dust and the like. The design of the wire opening 20b enables the wires to enter the installation cavity 20a in an orderly manner and connect with the terminal block 30, thereby avoiding confusion and entanglement of the wires and improving the overall aesthetics of the electric control box 100. When the cover 22 is in the second position, the installation cavity 20a is exposed, which is convenient for users to connect and repair the terminal block 30.

[0143] Combination Figure 10-11 The partition cover 20 also includes a baffle 23, which is fixed relative to the base 21. The baffle 23 can be fixedly connected to the base 21 by means of screws, bolts or snaps, or can be integrally injection molded with the base 21. In this embodiment, in order to ensure the strength of the structure, it is preferred to adopt an integral injection molding connection method.

[0144] When the cover plate 22 is in the first position, the baffle plate 23 and the cover plate 22 are located on the same side of the base 21, and the baffle plate 23 is located on the side where the wire passing opening 20b is located, and a wire passing cavity 20c connected to the installation cavity 20a is formed between the baffle plate 23 and the base 21, and the wire passing cavity 20c forms an opening 20d on the side away from the wire passing opening 20b.

[0145] The wires connected to the external electrical components can be passed through the opening 20d, the wire cavity 20c and the wire port 20b in sequence, and finally enter the installation cavity 20a to be connected to the terminal block 30. Since the baffle 23 is fixed relative to the base 21, when the cover 22 is opened, the wires can still pass through the wire cavity 20c in an orderly manner and extend into the installation cavity 20a, which not only improves the cleanliness of the electric control box 100, but also helps to improve the maintenance efficiency and safety of the electric control box 100.

[0146] When the partition cover 20 is arranged inside the inner cavity 10a, in order to make the overall structure of the partition cover 20 more compact, and to make the remaining space of the inner cavity 10a larger to accommodate more electrical components or reserve more space, so as to facilitate possible future expansion or maintenance, the partition cover 20 is generally arranged on the lower shell of the electric control box 100, and the installation port 10b is also opened on the lower shell, so that the opening 20d faces downward and is arranged directly opposite to the installation port 10b, so that the side of the baffle plate 23 close to the opening 20d is attached to the inner wall of the lower shell of the electric control box 100. In this way, with the baffle plate 23 blocking, the cover plate 22 is effectively prevented from directly contacting the lower shell of the box body 10 when it is active, thereby avoiding possible friction and wear. This not only prolongs the service life of the electric control box 100, but also improves the overall stability and reliability.

[0147] On the other hand, the base 21 and the baffle 23 are attached to the lower shell of the electrical control box 100, and the installation port 10b is also opened on the lower shell, which makes it more direct and convenient for the wires to enter and exit the junction box 100, reducing the space occupied by the wires in the inner cavity 10a, which not only reduces the manufacturing cost, but also facilitates the arrangement and management of the wires.

[0148] In addition, since the baffle 23 is fixed relative to the base 21, a sealing ring or a sealing gasket can be set between the contact surface of the baffle 23 and the lower shell of the electrical control box 100 to prevent external dust and other substances from entering the inner cavity 10a, and the space outside the junction box 100 can effectively prevent external dust and other substances from affecting the electrical components in the inner cavity 10a.

[0149] Furthermore, in order to reduce the impact of dust, water droplets and other impurities entering the installation cavity 20a on the wiring seat 30, a plug body 80 is provided at the opening 20a. Figure 15-16 As shown, a wire passage 80a is formed in the plug body 80, and the wire passage 80a is connected to the installation cavity 20a, that is, it is connected to the wire passage cavity 100c and the installation cavity 20a. The setting of the wire passage 80a prolongs the path for impurities such as dust and water droplets to enter the wire passage cavity 20c and the installation cavity 20a, thereby reducing the possibility of impurities such as dust and water droplets entering the wire passage cavity 20c and the installation cavity 20a to a certain extent, thereby ensuring the wiring stability of the terminal block 30.

[0150] The plug body 80 can be installed at the opening 20d by means of snaps, screws or gluing, etc., depending on the material of the plug body 80 and actual conditions, and no further restrictions are made here.

[0151] Following the above, please continue to refer to Figure 10-11When the partition 20 is set inside the inner cavity 10a, since the cover 22 needs to be movable to facilitate wiring or maintenance of the terminal block 30, when the cover 22 is in the first position, in order to prevent external dust from entering the space outside the partition 20 in the inner cavity 10a through the space between the cover 22 and the baffle 23, it is necessary to pay attention to the sealing between the cover 22 and the baffle 23. Therefore, in this embodiment, the partition 20 also includes a lap plate 24, and the lap plate 24 is fixed relative to the cover 22. When the cover 22 is in the first position, the lap plate 24 is lapped on the baffle 23. When the cover 22 is in the second position, the lap plate 24 is separated from the baffle 23.

[0152] When the cover 22 is closed (i.e., the first position), the lap plate 24 is placed on the baffle 23 to form a close contact surface. This design can effectively prevent dust, moisture or other pollutants from entering the inner cavity 10a through the gap between the cover 22 and the baffle 23, thereby protecting the normal use of the internal electrical components.

[0153] It is understandable that the lap plate 24 and the cover plate 22 can be fixedly connected by screws, bolts or snaps, or can be connected by one-piece injection molding. In this embodiment, for the sake of sealing and structural strength, the lap plate 24 and the cover plate 22 are an one-piece injection molding structure.

[0154] For further information, please refer to Fig. 9 , the baffle plate 23 forms a lap groove 23a on the side away from the wire passing cavity 20c, and when the cover plate 22 is in the first position, the lap plate 24 is at least partially located in the lap groove 23a and fits with the inner wall of the lap groove 23a, that is, the lap plate 24 can be partially located in the lap groove 23a and fit with the inner wall of the lap groove 23a, or the lap plate 24 can be completely located in the lap groove 23a and fit with the inner wall of the lap groove 23a. Both embodiments can play a sealing role, but in this embodiment, in order to make the entire partition cover 20 occupy a smaller space in the inner cavity 10a, so as to provide more installation space for the electrical components in the inner cavity 10a, the lap plate 24 is completely located in the lap groove 23a and fits with the inner wall of the lap groove 23a.

[0155] That is, the lap plate 24 is completely embedded in the lap groove 23a and fits tightly with the inner wall of the lap groove 23a, forming a sealing surface with almost no gap. This greatly enhances the sealing between the cover plate 22 and the baffle plate 23, effectively preventing external dust, moisture or other pollutants from entering the inner cavity 10a, thereby ensuring the safety and stability of the internal electronic device 50.

[0156] Due to the close fit between the lap plate 24 and the lap groove 23a, the entire structure is more stable in the first position (i.e., closed state), which helps to reduce the risk of accidental opening of the cover plate 22 due to factors such as vibration or impact, and improves the reliability and safety of the device.

[0157] Although the sealing performance and structural stability are enhanced in addition, this design does not increase the complexity of operation. When the cover plate 22 needs to be opened, it only needs to be operated according to normal steps without the need for additional tools or steps to release the cooperation between the lap plate 24 and the lap groove 23a.

[0158] Based on the previous embodiment, please continue to refer to Fig.10 , the overlap groove 23a extends to the end face of the baffle 23 away from the opening 20d. In this way, the difficulty of the groove is reduced during the groove process, and the manufacturing personnel can more easily determine the starting and ending positions of the groove. This reduces the measurement and positioning steps required during the processing, and the processing equipment can more easily cut or punch along the predetermined path. This helps to reduce processing errors and improve the accuracy and consistency of the overlap groove 23a.

[0159] When the cover 22 is in the first position, the cover 22 and the end surface of the baffle 23 facing away from the opening 20d are in contact with each other, and the end surfaces of the cover 22 and the baffle 23 are in contact with each other to form a tight contact surface, thereby effectively preventing external dust, moisture or other contaminants from entering the inner cavity 10a through the gap between them. This structure, together with the close fit between the lap plate 24 and the lap groove 23a mentioned above, can greatly improve the sealing between the installation cavity 20a and the remaining space of the inner cavity 10a when the cover 22 is in the first position (i.e., the closed state), and can prevent external dust, moisture or other contaminants from entering the remaining space of the inner cavity 10a through the gap between them.

[0160] For further information, please refer to Fig. 9 The cover plate 22 and the base 21 are rotatably connected at one side of the base 21. For example, the cover plate 22 can be connected to the base 21 by a hinge, so that the cover plate 22 can rotate relative to the base 21; or, both the cover plate 22 and the base 21 are provided with a shaft hole, and the shaft passes through the shaft holes of the cover plate 22 and the base 21, so that the cover plate 22 can rotate relative to the base 21; or, one of the cover plate 22 and the base 21 is provided with a shaft hole, and the other is provided with a shaft, and the shaft passes through the shaft hole, so that the cover plate 22 can rotate relative to the base 21.

[0161] The cover 22 can rotate to a first position and a second position relative to the base 21. When the cover 22 rotates to the first position, the cover 22 covers the wiring socket 30 located in the installation cavity 20a; when the cover 22 rotates to the second position, the cover 22 is opened to expose the wiring socket 30 located in the installation cavity 20a, so as to perform inspection, maintenance or wiring operations on the wiring socket 30.

[0162] The cover plate 22 and the base 21 are detachably connected at the other side of the base 21 , and the side where the cover plate 22 and the base 21 are rotatably connected can be an adjacent side or an opposite side, and in this embodiment, no further limitation is made.

[0163] The detachable connection method can be specifically that the cover plate 22 and the base 21 have magnetic parts respectively, and the magnetic parts on the cover plate 22 and the magnetic parts on the base 21 are different in magnetism. When the cover plate 22 is in the first position, the two magnetic parts attract each other, so that the cover plate 22 and the base 21 are relatively fixed; or, the cover plate 22 and the base 21 have buckles respectively, and when the cover plate 22 is in the first position, the buckles on the cover plate 22 and the buckles on the base 22 can be snap-connected, so that the cover plate 22 and the base 21 are relatively fixed. In this way, after the cover plate 22 is in the first position, the cover plate 22 is not easy to shake, which can ensure the stability of the entire partition 20, and at the same time, it is not easy for foreign matter such as dust to enter the remaining space of the inner cavity 10a from the installation cavity 20a.

[0164] The same or similar numbers in the drawings of this embodiment correspond to the same or similar items; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, it is based on the orientation or position relationship described in the drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0165] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electric control box for a HVAC system, characterized in that: include: A box body is formed with an inner cavity and a mounting opening communicated with the inner cavity; A partition cover is arranged in the inner cavity and covers the installation opening, the partition cover forms an installation cavity, and the installation cavity is isolated from the area outside the partition cover and located in the inner cavity; as well as The wiring seat is at least partially located in the installation cavity.

2. The electric control box according to claim 1, characterized in that: The wiring seat is provided with a first wiring portion and a second wiring portion, wherein the second wiring portion is electrically connected to the first wiring portion. The second wiring portion is separated from the first wiring portion by the partition cover; or, the second wiring portion and the first wiring portion are both located in the installation cavity, the partition cover is provided with a threading hole, and a sealing member is provided in the threading hole.

3. The electric control box according to claim 1, characterized in that: The partition cover comprises: A base, the wiring seat is fixed relative to the base, and the base is formed with a wire passing opening; and A cover plate is movably connected to the base, and the cover plate has a first position and a second position. In the first position, the cover plate is connected to the base and encloses the installation cavity, and the installation cavity is connected to the wire passing port; in the second position, the cover plate exposes at least a portion of the wiring seat.

4. The electric control box according to claim 3, characterized in that: The shield also includes: The baffle is fixed relative to the base. When the cover plate is in the first position, the baffle and the cover plate are located on the same side of the base, and the baffle is located on the side where the wire passing opening is located. A wire passing cavity connected to the installation cavity is formed between the baffle and the base, and the wire passing cavity forms an opening on the side away from the wire passing opening.

5. The electric control box according to claim 4, characterized in that: The shield also includes: The lap plate is fixed relative to the cover plate. When the cover plate is in the first position, the lap plate is overlapped on the baffle plate. When the cover plate is in the second position, the lap plate is separated from the baffle plate.

6. The electric control box according to claim 5, characterized in that: The baffle forms a lap groove on a side away from the wire passage cavity. When the cover plate is in the first position, the lap plate is at least partially located in the lap groove and fits against the inner wall of the lap groove.

7. The electric control box according to claim 6, characterized in that: The overlapping groove extends to an end surface of the baffle facing away from the opening; And / or, when the cover plate is in the first position, the cover plate is in contact with an end surface of the baffle plate that is away from the opening.

8. The electric control box according to claim 3, characterized in that: The cover plate is rotatably connected to the base at one side of the base, and the cover plate is detachably connected to the base at the other side of the base.

9. The electric control box according to claim 1, characterized in that: Also includes: A partition is provided in the inner cavity of the box body and divides the inner cavity into a first chamber and a second chamber, and a first vent and a second vent are provided on the partition, and the first vent and the second vent are both connected to the first chamber and the second chamber; An electronic device is disposed in the first chamber; a heat sink, at least partially disposed in the second chamber; a cooling fan, disposed in one of the first chamber and the second chamber, for circulating air between the first chamber and the second chamber; Wherein, the installation port is communicated with the first chamber, and the partition cover is located in the first chamber.

10. The electric control box according to claim 9, characterized in that: The partition cover is located at a side of the first chamber.

11. The electric control box according to claim 10, characterized in that: The cooling fan and the electronic device are both located in the first chamber; The cooling fan comprises a first cooling fan and a second cooling fan, the first cooling fan is arranged at one side of the first chamber along a first direction, the second cooling fan is arranged at the other side of the first chamber along the first direction, and the electronic device is arranged between the first cooling fan and the second cooling fan; The shield is disposed on a side of the first cooling fan away from the second cooling fan along the first direction, or the shield is disposed on a side of the second cooling fan away from the first cooling fan along the first direction.

12. The electric control box according to claim 9, characterized in that: The radiator comprises a heat exchange body and a heat dissipation portion fixed relative to the heat exchange body, and the heat exchange body is located in the second chamber; The partition is provided with a heat exchange port communicating with the first chamber and the second chamber; Wherein, the heat dissipation portion is arranged adjacent to the heat exchange port.

13. A HVAC system, characterized in that: include: The electric control box according to any one of claims 1 to 12; compressor; Outdoor heat exchanger; as well as The indoor heat exchanger, the compressor, the outdoor heat exchanger, the electric control box and the indoor heat exchanger are connected in sequence.

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