Electric control box, machine head assembly and heat pump water heater

Abstract

The embodiment of the utility model provides an electric control box, a machine head assembly and a heat pump water heater, the electric control box comprises a first box body, an electric control board and an inductance assembly, the first box body is provided with a first air channel, a first air inlet, an air outlet and a first avoiding opening, and the first air inlet, the air outlet and the first avoiding opening communicate with the first air channel; the first receding opening is formed in the side, in the first direction of the electric control box, of the first air duct and located between the first air inlet and the air outlet, and the first air inlet faces the inner side wall of the first air duct. The electric control board is arranged on the outer side of the first air channel and located on the side, provided with the first receding opening, of the first air channel. The inductor assembly is arranged on the electric control board and comprises an inductor element electrically connected with the electric control board, at least part of the structure of the inductor element extends into the first air channel from the second avoiding opening and the first avoiding opening, and the side, away from the electric control board, of the inductor element is suspended in the air in the first direction. The electric control box provided by the embodiment of the utility model not only can improve the heat dissipation effect, but also has better waterproof performance.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to an electrical control box, a head assembly, and a heat pump water heater. Background Technology

[0002] In related technologies, control boxes typically have inductor components mounted on the control board. Because inductor components generate significant heat, they generally require heat dissipation. In addition, they also need to be waterproof. However, in related technologies, the inductor components within the control box often fail to simultaneously meet both heat dissipation and waterproofing requirements. Utility Model Content

[0003] In view of this, the embodiments of this application aim to provide an electrical control box, a head assembly, and a heat pump water heater that can improve heat dissipation and have good waterproof performance.

[0004] To achieve the above objectives, one embodiment of this application provides an electronic control box, including:

[0005] The first housing has a first air duct and a first air inlet, an air outlet and a first clearance opening respectively connected to the first air duct. The first clearance opening is located on one side of the first air duct along the first direction of the electrical control box and is located between the first air inlet and the air outlet. The first air inlet faces the inner wall of the first air duct.

[0006] An electronic control board is disposed on the outside of the first air duct and on the side of the first air duct where the first clearance opening is provided;

[0007] An inductor assembly disposed on the electronic control board includes an inductor element electrically connected to the electronic control board. At least a portion of the structure of the inductor element extends into the first air duct from the first clearance opening, and the inductor element is suspended on the side opposite to the electronic control board along the first direction.

[0008] In one embodiment, the first air inlet and the air outlet are located on opposite sides of the first air duct along a second direction perpendicular to the first direction, and the first air inlet is located on the side of the first air duct away from the electronic control board.

[0009] In one embodiment, the first air inlet and the air outlet are respectively located on opposite sides of the first air duct along a second direction perpendicular to the first direction. The first air duct includes a first sub-channel communicating with the first air inlet and an inductor receiving cavity communicating with the first sub-channel through a first air passage. The inductor receiving cavity is located on the side of the first sub-channel closer to the electronic control board, and the first air passage is located on the side of the first air inlet closer to the air outlet along the second direction. The first clearance opening is communicating with the inductor receiving cavity.

[0010] In one embodiment, the first sub-channel includes a first channel segment and a second channel segment. The first channel segment is located on the side of the second channel segment away from the air outlet along the second direction, and the side of the first channel segment near the electronic control board protrudes from the second channel segment. The first channel segment is connected to the first air inlet. The inductor receiving cavity is located on the side of the second channel segment near the electronic control board, and the inductor receiving cavity is connected to the second channel segment through the first air outlet.

[0011] In one embodiment, the first housing has a protrusion located within the first channel segment, the protrusion being disposed between the second channel segment and the first air inlet, and extending toward the direction close to the electronic control board to construct a second air outlet within the first channel segment, the second air outlet being located on the side of the protrusion close to the electronic control board.

[0012] In one embodiment, the first air inlet and the air outlet are located on opposite sides of the first air duct along a second direction perpendicular to the first direction. The first air duct includes the inductor housing cavity and a second sub-channel communicating with the inductor housing cavity through a third air outlet. The second sub-channel is located on the side of the inductor housing cavity away from the first air inlet along the second direction and extends away from the electronic control board.

[0013] In one embodiment, the third air inlet and the air outlet are located on opposite sides of the second sub-channel along the second direction, and the third air inlet and the air outlet are offset from each other.

[0014] In one embodiment, the first housing has a first air guide vane disposed outside the first air inlet. The first air guide vane is located on the side of the first air inlet near the air outlet along a second direction perpendicular to the first direction, and is inclined toward the direction of the first air inlet.

[0015] In one embodiment, the electrical control box includes a heat sink disposed on the electrical control board, and the air outlet faces the heat sink.

[0016] In one embodiment, the first housing has a second air duct and a second air inlet, the second air duct being connected to the second air inlet and the air outlet respectively.

[0017] In one embodiment, the second air duct and the first air duct are located on the same side of the air outlet along a second direction, and the second direction is perpendicular to the first direction;

[0018] The second air duct is located on one side of the first air duct along a third direction, which is perpendicular to both the first and second directions; and / or,

[0019] The first air duct and the second air duct are separated, a portion of the air outlet is connected to the first air duct, and another portion of the air outlet is connected to the second air duct; and / or,

[0020] The first housing has a second air guide vane disposed outside the second air inlet. The second air guide vane is located on the side of the second air inlet close to the air outlet along the second direction and is inclined toward the direction close to the second air inlet.

[0021] In one embodiment, the first housing has a through-hole extending through the first housing in the first direction, and the heat sink is disposed in the through-hole and extends to the outside of the first housing through the through-hole.

[0022] In one embodiment, the air outlet is located on one side of the heat sink along the second direction and at least toward the portion of the heat sink located outside the first housing. The heat sink includes a heat sink body with multiple heat sinks, and the multiple heat sinks are spaced apart along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0023] In one embodiment, the inductor assembly includes a base with a mounting port, the base being disposed on the control board, a portion of the inductor element being located in the mounting port, and the control box including a sealing assembly, the sealing assembly including a first sealing ring and a second sealing ring, the first sealing ring being sleeved on the outer periphery of the inductor element and respectively sealingly contacting the portion of the base located on the periphery of the mounting port and the first box body, the second sealing ring being sleeved on the outer periphery of the heat sink and sealingly contacting the first box body.

[0024] In one embodiment, the portion of the first housing located around the first clearance opening is in sealing contact with the first sealing ring; and / or,

[0025] The first housing has a through-hole extending through the first housing in the first direction. The heat sink is inserted through the through-hole and extends to the outside of the first housing through the through-hole. The portion of the first housing located around the through-hole is in sealing contact with the second sealing ring.

[0026] In one embodiment, the first sealing ring has a first snap-fit ​​portion, and the base has a second snap-fit ​​portion. One of the first snap-fit ​​portion and the second snap-fit ​​portion is a slot, and the other is a buckle, which snaps into the slot.

[0027] In one embodiment, the first sealing ring has a first sealing opening that penetrates the first sealing ring, the inductor element passes through the first sealing opening, the first snap-fit ​​portion is disposed on the side of the first sealing ring near the first sealing opening, the base includes a mounting portion located within the first sealing opening, the mounting opening penetrates the mounting portion, and the second snap-fit ​​portion is disposed on the side of the mounting portion opposite to the mounting opening.

[0028] In one embodiment, the base includes a seat portion having a first sealing surface on one side, a mounting portion being disposed on the side of the seat portion having the first sealing surface, and the first sealing surface surrounding the outer periphery of the mounting portion, the mounting opening penetrating the seat portion, and the first sealing ring making sealing contact with the first sealing surface; and / or,

[0029] The first sealing ring has a first segment and a second segment arranged along the through direction of the first sealing opening. The first segment protrudes into the first sealing opening so that the side of the first segment near the second segment forms a second sealing surface. The second sealing surface makes sealing contact with the mounting portion. The side of the first segment opposite to the second segment makes sealing contact with the first housing body; and / or,

[0030] The sealing assembly includes a connector that is connected to the first sealing ring and the second sealing ring respectively.

[0031] In one embodiment, the heat sink includes a heat sink body and a boss surrounding the outer periphery of the heat sink body, and the second sealing ring is fitted onto the heat sink body and makes sealing contact with the boss.

[0032] In one embodiment, the second sealing ring has a second sealing opening that penetrates the second sealing ring and a sealing groove located on the side of the second sealing ring near the second sealing opening, and the heat sink is disposed in the second sealing opening;

[0033] The boss extends into the sealing groove; or...

[0034] The electrical control box includes a bracket disposed on the electrical control board and supporting the heat sink, wherein at least one of the boss and the bracket extends into the sealing groove.

[0035] In one embodiment, the electrical control box further includes an openable and closable second housing, and the electrical control board is disposed in the second housing.

[0036] In one embodiment, the first housing includes a first shell and a second shell, the second shell is disposed on one side of the first shell along the first direction and together with the first shell to form the first air duct, the first air inlet is disposed in the first shell, the first clearance opening is disposed in the second shell, and the air outlet is disposed in at least one of the first shell and the second shell.

[0037] Another embodiment of this application provides a nose cone assembly, including:

[0038] Water tray;

[0039] A cover is provided on one side of the water receiving tray. The cover has a mounting cavity and an airflow inlet and an airflow outlet respectively communicating with the mounting cavity. An airflow path is formed between the airflow inlet and the airflow outlet.

[0040] The aforementioned electrical control box is disposed within the mounting cavity and located on the airflow path, with the electrical control board located on the side of the inductor assembly facing away from the water receiving tray.

[0041] In one embodiment, the head assembly further includes a heat exchanger and a compressor disposed within the mounting cavity, the airflow inlet and the airflow outlet being located on opposite sides of the heat exchanger, the compressor being located on the side of the heat exchanger closer to the airflow inlet, and the electrical control box being located on the side of the compressor away from the water receiving tray.

[0042] In one embodiment, the first air inlet faces the water receiving tray; and / or,

[0043] The first housing has a through-hole extending through the first housing along the first direction. The electrical control box includes a heat sink disposed on the electrical control board. The heat sink passes through the through-hole and extends to the outside of the first housing through the through-hole. The air outlet is located on the side of the heat sink away from the heat exchanger and is at least facing the portion of the heat sink located outside the first housing; and / or,

[0044] The head assembly includes a support member and a fan wheel bracket. The support member is located on the side of the heat exchanger near the airflow inlet, and the fan wheel bracket is located on the side of the heat exchanger away from the support member. The electrical control box is connected to both the fan wheel bracket and the support member.

[0045] Another embodiment of this application provides a heat pump water heater, including a water tank assembly and the aforementioned head assembly, wherein the head assembly is disposed on the water tank assembly.

[0046] This application provides an electrical control box, a head assembly, and a heat pump water heater. The electrical control box provided in this application improves the heat dissipation effect of the electrical control box by placing at least a portion of the inductor's structure within a first air duct, allowing airflow to exchange heat with the inductor and carry away heat. Furthermore, in some cases, rainwater, condensate, or other liquids outside the electrical control box may enter the first air duct through the first air inlet. Therefore, the first air inlet faces the inner wall of the first air duct, which can effectively block rainwater, condensate, and other liquids from entering the first air duct. Simultaneously, since the side of the inductor facing away from the control board along the first direction is suspended—that is, the side of the inductor near the water tray 20 is suspended within the first air duct—even if rainwater, condensate, or other liquids enter the first air duct, they are unlikely to directly contact the inductor. Therefore, the electrical control box of this application improves the heat dissipation effect of the inductor while also having good waterproof performance. Attached Figure Description

[0047] Figure 1 This is an exploded view of a nose cone assembly according to an embodiment of this application;

[0048] Figure 2 for Figure 1 The diagram shows the structure of the nose assembly;

[0049] Figure 3 for Figure 1 A top view of the nose assembly shown;

[0050] Figure 4 for Figure 1 A cross-sectional view of the nose assembly shown;

[0051] Figure 5 for Figure 1 The diagram shows the structure of the electrical control box.

[0052] Figure 6 for Figure 5 Sectional view at point AA;

[0053] Figure 7 for Figure 5 Sectional view at point BB;

[0054] Figure 8 for Figure 5 Sectional view at CC;

[0055] Figure 9 for Figure 8 A magnified view of a section at point D;

[0056] Figure 10 This is an exploded view of the first box shown in Figure 5;

[0057] Figure 11 for Figure 5 The diagram shows the structure of the electrical control box, with the first box body omitted in the diagram;

[0058] Figure 12 for Figure 1 The diagram shows the structure of the sealing assembly.

[0059] Explanation of reference numerals in the attached figures:

[0060] 10. Electrical control box; 11. First box body; 11a. First air duct; 11a1. First sub-channel; 11a11. First channel segment; 11a12. Second channel segment; 11a2. First air inlet; 11a3. Inductor housing cavity; 11a4. Third air inlet; 11a5. Second sub-channel; 11b. First air inlet; 11c. Air outlet; 11d. Second air duct; 11e. Second air inlet; 111. First housing; 111a, second clearance opening; 1111, first air guide vane; 1112, second air guide vane; 112, second housing; 112a, connecting opening; 112b, first clearance opening; 1121, protrusion; 1121a, second air outlet; 12, electronic control board; 13, inductor assembly; 131, inductor element; 132, base; 132a, mounting opening; 1321, second snap-fit ​​part; 1322, mounting 1323, Sealing body; 1323a, First sealing surface; 14, Heat sink; 141, Heat sink body; 142, Boss; 15, Sealing assembly; 151, First sealing ring; 151a, First sealing port; 1511, First snap-fit ​​part; 1512, First section; 1512a, Second sealing surface; 1513, Second section; 152, Second sealing ring; 152a, Second sealing port; 152b, Sealing groove ; 1521, snap-fit ​​block; 1522, protruding edge; 153, connector; 16, bracket; 17, second housing; 171, third housing; 172, fourth housing; 20, water tray; 30, cover; 30a, mounting cavity; 30b, airflow inlet; 30c, airflow outlet; 31, shell; 32, top cover; 40, heat exchanger; 50, compressor; 60, support component; 70, impeller bracket; 80, fan box. Detailed Implementation

[0061] In the description of the embodiments in this application, it should be noted that the terms "first direction" and "second direction" are based on the appended... Figure 6 The indicated orientation or positional relationship, the term "third orientation" is based on the attached... Figure 5 The orientation or positional relationship shown is merely for the convenience of describing the embodiments of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0062] This application provides an electronic control box 10, please refer to... Figure 1 , Figures 5 to 8 , Figure 10 The control box 10 includes a first box body 11, a control board 12, and an inductor assembly 13.

[0063] The first housing 11 has a first air duct 11a and a first air inlet 11b, an air outlet 11c and a first clearance opening 112b respectively connected to the first air duct 11a. The first clearance opening 112b is located on one side of the first air duct 11a along the first direction of the electrical control box and is located between the first air inlet 11b and the air outlet 11c. The first air inlet 11b faces the inner wall of the first air duct 11a.

[0064] The first air duct 11a is a channel for airflow. The first air inlet 11b is the entrance for external airflow into the first air duct 11a. The air outlet 11c is the exit for airflow out of the first air duct 11a.

[0065] The relative positions of the first air inlet 11b and the air outlet 11c are not limited. For example, please refer to [link to relevant documentation]. Figures 5 to 8 The first air inlet 11b and the air outlet 11c can be located on opposite sides of the first air duct 11a along a second direction perpendicular to the first direction.

[0066] The first air inlet 11b facing the inner wall of the first air duct 11a means that on a projection plane parallel to the first air inlet 11b, the projection of the first air inlet 11b is located in the projection area of ​​the inner wall of the first air duct 11a. In other words, after the external airflow enters the first air inlet 11b, it flows towards the inner wall of the first air duct 11a.

[0067] Provided that the first air inlet 11b faces the inner wall of the first air duct 11a, the first air inlet 11b can be located on the side of the first air duct 11a away from the electronic control board 12, or it can be located on other sides of the first air duct 11a.

[0068] For example, please refer to Figures 5 to 8 , Figure 10The first box body 11 may include a first shell 111 and a second shell 112. The second shell 112 is disposed on one side of the first shell 111 along the first direction and together with the first shell 111, forms a first air duct 11a.

[0069] The first air inlet 11b can be located in the first housing 111, and the first clearance opening 112b can be located in the second housing 112. Figure 6 The air outlet 11c shown is disposed on the second housing 112. In some other embodiments, the air outlet 11c may also be disposed on the first housing 111, or the first housing 111 and the second housing 112 may each be provided with an air outlet 11c.

[0070] The first housing 111 and the second housing 112 can be made of the same material or different materials.

[0071] For the first housing 111 and the second housing 112 made of different materials, for example, the first housing 111 can be made of metal, and the second housing 112 can be made of plastic. The second housing 112 can be disposed inside the first housing 111. The plastic second housing 112 can provide a certain degree of insulation, while the metal first housing 111 can provide a certain degree of fire resistance and explosion resistance. Therefore, the combination of the metal first housing 111 and the plastic second housing 112 can improve the safety of the electrical control box.

[0072] Please see Figures 6 to 8 The electronic control board 12 can be located on the side of the second housing 112 opposite to the first housing 111.

[0073] In other embodiments, the first housing 11 may also have only one shell.

[0074] Please see Figure 1 , Figures 6 to 8 The control box 10 can also be equipped with an openable and closable second box 17. The control board 12 can be set in the second box 17. That is to say, after the second box 17 is opened, the control board 12, the inductor assembly 13 and the heat sink 14 are all located in the second box 17.

[0075] In some other embodiments, the control board 12 may also be located in the first housing 11. That is, after the second housing 17 is opened, the control board 12, the inductor assembly 13 and the heat sink 14 are all located in the first housing 11.

[0076] The structure of the second box 17 is not limited; for example, please refer to [link to relevant documentation]. Figure 1 The second housing 17 may include a third housing 171 and a fourth housing 172. The fourth housing 172 is disposed on the side of the third housing 171 near the first housing 11, and the electronic control board 12 may be disposed on the fourth housing 172.

[0077] In other words, the third shell 171 and the fourth shell 172 can be integrally formed or they can be separate structures. The third shell 171 and the fourth shell 172 can be made of the same material or different materials.

[0078] For the third housing 171 and the fourth housing 172 which are made of different materials, for example, the third housing 171 may be made of metal and the fourth housing 172 may be made of plastic.

[0079] In other embodiments, the second housing 17 may also consist of only one shell.

[0080] Please continue reading. Figures 6 to 8 An inductor assembly 13 is disposed on the control board 12. The inductor assembly 13 includes an inductor element 131 electrically connected to the control board 12. At least a portion of the structure of the inductor element 131 extends into the first air duct 11a from the first clearance opening 112b. The side of the inductor element 131 facing away from the control board 12 along the first direction is suspended, that is, the side of the inductor element 131 facing away from the control board 12 along the first direction does not contact the inner wall of the first air duct 11a.

[0081] Additionally, it should be noted that the location of the first clearance opening 112b should be such that the part of the inductor 131 extending into the first air duct 11a is offset from the first air inlet 11b. In other words, on the projection plane parallel to the first air inlet 11b, the projection of the part of the inductor 131 located in the first air duct 11a is located outside the projection of the first air inlet 11b. Or, after the airflow enters the first air inlet 11b, it will not flow directly toward the part of the inductor 131 located in the first air duct 11a.

[0082] This application also provides a nose cone assembly; please refer to [link / reference]. Figures 1 to 4 The head assembly includes a water receiving tray 20, a cover 30, and an electrical control box 10 provided in any embodiment of this application.

[0083] A housing 30 is fitted over one side of the water receiving tray 20. The housing 30 has a mounting cavity 30a and an airflow inlet 30b and an airflow outlet 30c that are respectively connected to the mounting cavity 30a. An airflow path is formed between the airflow inlet 30b and the airflow outlet 30c. The electrical control box 10 is disposed inside the mounting cavity 30a and is located on the airflow path. The electrical control board 12 is located on the side of the inductor assembly 13 away from the water receiving tray 20.

[0084] The structure of the housing 30 is not limited; for example, please refer to [reference needed]. Figure 1The housing 30 may include a housing body 31 and a top cover 32 disposed on top of the housing body 31. The housing body 31 has an airflow inlet 30b and an airflow outlet 30c. To facilitate the assembly and maintenance of the head assembly, the top cover 32 and the housing body 31 may be detachably connected. In another embodiment, the top cover 32 and the housing body 31 may also be an integral structure.

[0085] Please see Figure 1 , Figure 3 and Figure 4 The head assembly also includes a heat exchanger 40 and a compressor 50 disposed in the mounting cavity 30a. The air inlet 30b and the air outlet 30c are located on opposite sides of the heat exchanger 40, respectively. The compressor 50 can be located on the side of the heat exchanger 40 closer to the air inlet 30b, and the electrical control box 10 is located on the side of the compressor 50 away from the water receiving pan 20.

[0086] During operation, external airflow enters the mounting cavity 30a through the airflow inlet 30b and exchanges heat with the heat exchanger 40. During this process, the heat exchanger 40 produces condensate, which is collected by the drip tray 20. By placing the electrical control box 10 on the side of the compressor 50 away from the drip tray 20, the probability of condensate entering the electrical control box 10 can be reduced.

[0087] Please see Figure 4 The head assembly may include a support member 60 and a fan wheel bracket 70. The support member 60 is located on the side of the heat exchanger 40 near the airflow inlet 30b, and the fan wheel bracket 70 is located on the side of the heat exchanger 40 away from the support member 60. The electrical control box 10 is connected to the fan wheel bracket 70 and the support member 60 respectively.

[0088] The wind turbine bracket 70 and the support member 60 can support the electrical control box 10, thereby improving the installation stability of the electrical control box 10.

[0089] The impeller bracket 70 is used to mount the impeller. The impeller bracket 70 is located on the side of the heat exchanger 40 away from the support member 60. That is, the impeller bracket 70 is located downstream of the heat exchanger 40 along the airflow path and on the side of the heat exchanger 40 near the airflow outlet 30c.

[0090] Please see Figure 1 , Figure 3 and Figure 4 The head assembly may also include a fan box 80, which is located on the side of the heat exchanger 40 away from the airflow outlet 30c, and one side of the electrical control box 10 may be connected to the fan box 80.

[0091] The electrical control box 10 is located on the airflow path, which means that a portion of the airflow entering the mounting cavity 30a from the airflow inlet 30b can enter the first air duct 11a from the first air inlet 11b to dissipate heat from the inductor 131.

[0092] The control board 12 is located on the side of the inductor assembly 13 away from the water receiving tray 20. In other words, the first clearance opening 112b is located at the top of the first air duct 11a, and the inductor assembly 13 extends into the first air duct 11a from the top of the first air duct 11a.

[0093] This application also provides a heat pump water heater, which includes a water tank assembly and a head assembly provided in any embodiment of this application, wherein the head assembly is disposed on the water tank assembly.

[0094] The head assembly is generally located at the top of the water tank assembly along the height direction. In other embodiments, the head assembly may also be located at other positions on the water tank assembly.

[0095] The water tank assembly has an outer shell and an inner tank and a water tank heat exchanger disposed within the outer shell. The inner tank is used to store domestic water, and the water tank heat exchanger heats the domestic water in the inner tank into hot water by exchanging heat with the heat exchanger in the head assembly.

[0096] Please see Figure 6 and Figure 8 When the inductor 131 is working, it will generate a lot of heat. By placing at least a part of the structure of the inductor 131 in the first air duct 11a, the airflow can exchange heat with the inductor 131 when it flows in the first air duct 11a and carry away the heat, thereby improving the heat dissipation effect of the control box 10. In addition, in some cases, rainwater, condensate, and other liquids outside the control box 10 may enter the first air duct 11a from the first air inlet 11b. Therefore, the inner wall of the first air inlet 11b facing the first air duct 11a can block rainwater, condensate, and other liquids from entering the first air duct 11a. At the same time, since the side of the inductor 131 away from the control board 12 along the first direction is suspended, that is, the side of the inductor 131 near the water tray 20 is suspended in the first air duct 11a, even if rainwater, condensate, and other liquids enter the first air duct 11a, it is difficult for them to directly contact the inductor 131. Therefore, the control box 10 of this application embodiment improves the heat dissipation effect of the inductor 131 while also having good waterproof performance.

[0097] Additionally, please see Figure 4When the first air inlet 11b is located on the side of the first air duct 11a away from the electronic control board 12, the first air inlet 11b is actually facing the water collection tray 20. It is difficult for rainwater, condensate and other liquids to enter the first air duct 11a from the first air inlet 11b. Even if rainwater, condensate and other liquids enter the first air duct 11a from the first air inlet 11b, at least some of the rainwater, condensate and other liquids can drip from the first air inlet 11b into the water collection tray 20 under their own gravity. Thus, the probability of rainwater, condensate and other liquids entering the first air duct 11a from the first air inlet 11b can be further reduced.

[0098] It should be noted that when the electrical control box 10 is installed inside the head assembly, the installation method of the electrical control box 10 inside the head assembly is not limited to placing the electrical control board 12 of the electrical control box 10 on the side of the inductor assembly 13 away from the water receiving pan 20. Depending on the specific design, the electrical control box 10 can also adopt other installation methods. For example, the electrical control board 12 can also be placed on the side of the inductor assembly 13 away from the heat exchanger 40.

[0099] Furthermore, the electrical control box 10 of this application embodiment is not limited to use in heat pump water heaters; the electrical control box can be used in any other electrical equipment that requires an electrical control box.

[0100] In one embodiment, please refer to Figure 6 The first air inlet 11b and the air outlet 11c can be located on opposite sides of the first air duct 11a along a second direction perpendicular to the first direction. The first air duct 11a includes a first sub-channel 11a1 connected to the first air inlet 11b and an inductor receiving cavity 11a3 connected to the first sub-channel 11a1 through a first air outlet 11a2. The first clearance opening 112b is connected to the inductor receiving cavity 11a3. That is to say, the inductor element 131 extends into the inductor receiving cavity 11a3.

[0101] The first air inlet 11b and air outlet 11c being located on opposite sides of the first air duct 11a along the second direction means that the first air inlet 11b and air outlet 11c can be located on opposite sides of the first air duct 11a, or they can be located close to opposite sides of the first air duct 11a. For example, Figure 6 The first air inlet 11b shown is located on the side of the first air duct 11a along the second direction, while the air outlet 11c is located on the side of the first air duct 11a along the second direction. That is to say, the orientation of the first air inlet 11b and the air outlet 11c is not parallel.

[0102] The inductor housing cavity 11a3 is used to house at least a portion of the structure of the inductor element 131, and the airflow exchanges heat with the inductor element 131 when it flows through the inductor housing cavity 11a3.

[0103] Figure 6 and Figure 8 The inductor housing 11a3 shown is located on the side of the first sub-channel 11a1 closer to the electronic control board 12, and the first air outlet 11a2 is located on the side of the first air inlet 11b closer to the air outlet 11c along the second direction. That is to say, the inductor housing 11a3 is closer to the electronic control board 12 than the first sub-channel 11a1. Therefore, not only can as much of the structure of the inductor element 131 be extended into the inductor housing 11a3, but the probability of rainwater or other liquids entering the inductor housing 11a3 from the first sub-channel 11a1 can also be reduced.

[0104] Please continue reading. Figure 6 and Figure 8 The first sub-channel 11a1 may include a first channel segment 11a11 and a second channel segment 11a12. The first channel segment 11a11 is located on the side of the second channel segment 11a12 away from the air outlet 11c along the second direction, and the side of the first channel segment 11a11 near the electronic control board 12 protrudes from the second channel segment 11a12. The first channel segment 11a11 is connected to the first air inlet 11b. The inductor receiving cavity 11a3 is located on the side of the second channel segment 11a12 near the electronic control board 12, and the inductor receiving cavity 11a3 is connected to the second channel segment 11a12 through the first air outlet 11a2.

[0105] When the airflow flows in the first sub-channel 11a1, it first enters the first channel section 11a11 from the first air inlet 11b, then enters the second channel section 11a12, and then enters the inductor housing cavity 11a3 through the first air outlet 11a2 to exchange heat with the inductor element 131.

[0106] The side of the first channel segment 11a11 near the electronic control board 12 protrudes from the second channel segment 11a12. That is, the sidewall at the junction of the first channel segment 11a11 and the second channel segment 11a12 forms a stepped structure. This structure can prevent rainwater from entering the inductor housing cavity 11a3 from the second channel segment 11a12, thereby reducing the probability of rainwater entering the motor housing cavity from the first sub-channel 11a1.

[0107] For example, please continue reading Figure 6 and Figure 8 The first box 11 may have a protrusion 1121 located in the first channel section 11a11. The protrusion 1121 is disposed between the second channel section 11a12 and the first air inlet 11b, and extends in a direction close to the electronic control board 12 to form a second air passage 1121a in the first channel section 11a11. The second air passage 1121a is located on the side of the protrusion 1121 close to the electronic control board 12. That is, the protrusion 1121 is located on the side of the first air duct 11a close to the first air inlet 11b along the first direction, which can prevent rainwater, condensate and other liquids from entering the second channel section 11a12.

[0108] In an embodiment where the first housing 11 includes a first shell 111 and a second shell 112, the protrusion 1121 may be a part of the second shell 112 or a part of the first shell 111.

[0109] In one embodiment, please refer to Figure 6 and Figure 8 The first air inlet 11b and the air outlet 11c can be located on opposite sides of the first air duct 11a along a second direction perpendicular to the first direction. The first air duct 11a includes an inductor housing cavity 11a3 and a second sub-channel 11a5 connected to the inductor housing cavity 11a3 through a third air outlet 11a4. The second sub-channel 11a5 is located on the side of the inductor housing cavity 11a3 away from the first air inlet 11b along the second direction and extends away from the electronic control board 12.

[0110] The second sub-channel 11a5 is located on the side of the inductor housing facing away from the first air inlet 11b along the second direction. That is, the second sub-channel 11a5 is located on the side of the inductor housing close to the air outlet 11c along the second direction. When the airflow flows in the first air duct 11a, it enters the second sub-channel 11a5 from the inductor housing cavity 11a3 through the third air outlet 11a4.

[0111] The second sub-channel 11a5 extends away from the electronic control board 12. In other words, the airflow flows away from the electronic control board 12 within the second sub-channel 11a5 and flows towards the air outlet 11c. This structure can further reduce the probability of rainwater, condensate, and other liquids entering the inductor housing 11a3 from the air outlet 11c.

[0112] For example, please refer to Figure 6 and Figure 8 The third air inlet 11a4 and the air outlet 11c can be located on opposite sides of the second sub-channel 11a5 along the second direction, and the third air inlet 11a4 and the air outlet 11c are staggered.

[0113] The third air inlet 11a4 and the air outlet 11c are offset because their projections on the projection plane perpendicular to the second direction do not overlap. This reduces the probability of rainwater, condensate, and other liquids entering the inductor cavity 11a3 from the second sub-channel 11a5.

[0114] Figure 1 and Figure 4 In the head assembly shown, the inductor assembly 13 is located on the side of the compressor 50 away from the water tray 20. The third air inlet 11a4 can be further away from the water tray 20 than the air outlet 11c. Under the action of gravity, rainwater, condensate and other liquids cannot enter the inductor housing cavity 11a3 from the third air inlet 11a4, thereby enhancing the waterproofness of the control box 10.

[0115] In one embodiment, please refer to Figures 4 to 6 , Figure 8 and Figure 10 The first box body 11 may have a first air guide 1111 disposed outside the first air inlet 11b.

[0116] In an embodiment where the first housing 11 includes a first shell 111 and a second shell 112, the first air guide vane 1111 may be disposed on the first shell 111.

[0117] The first guide vane 1111 is used to increase the air volume entering the first air duct 11a. The first guide vane 1111 can be located on the side of the first air inlet 11b close to the air outlet 11c along the second direction, and is inclined towards the first air inlet 11b. When the airflow reaches the first guide vane 1111, it can enter the first air duct 11a from the first air inlet 11b along the first guide vane 1111.

[0118] Please see Figure 4 The first air guide vane 1111 can be located on the side of the first air inlet 11b away from the air inlet 30b along the airflow path.

[0119] The tilt angle of the first air guide vane 1111 is not limited. More preferably, the tilt angle of the first air guide vane 1111 is 10° to 90° (including the endpoint value). It should be noted that the tilt angle of the first air guide vane 1111 refers to the angle between the first air guide vane 1111 and the plane where the first air inlet 11b is located.

[0120] In addition, the first air guide plate 1111 can also play a certain role in blocking water, thereby further reducing the probability of rainwater, condensate and other liquids entering the first air duct 11a from the first air inlet 11b.

[0121] In one embodiment, please refer to Figure 1 , Figure 6 and Figure 7 The control box 10 may include a heat sink 14 disposed on the control board 12, with the air outlet 11c facing the heat sink 14.

[0122] The heat sink 14 is used to dissipate heat from the electronic control board 12. The heat sink 14 is disposed on the electronic control board 12, allowing heat generated by the electronic control board 12 to be transferred to the heat sink 14. Airflow from the air outlet 11c can flow towards the heat sink 14 and exchange heat with it, thus completing the heat dissipation of the electronic control board 12. By orienting the air outlet 11c towards the heat sink 14, the heat dissipation effect of the heat sink 14 can be improved.

[0123] For example, please refer to Figure 7The first box 11 may have a second air duct 11d and a second air inlet 11e, wherein the second air duct 11d is connected to the second air inlet 11e and the air outlet 11c respectively.

[0124] The second air duct 11d is used to increase the airflow to the heat sink 14. The airflow can enter the second air duct 11d from the second air inlet 11e, and then flow to the heat sink 14 from the air outlet 11c, thereby improving the heat dissipation effect of the heat sink 14.

[0125] In an embodiment where the first housing 11 includes a first shell 111 and a second shell 112, the first shell 111 and the second shell 112 can jointly enclose a second air duct 11d, and the second air inlet 11e can be disposed in the first shell 111.

[0126] Please see Figures 5 to 8 The second air duct 11d and the first air duct 11a can be located on the same side of the air outlet 11c along the second direction, and the second air duct 11d is located on the side of the first air duct 11a along the third direction. The third direction is perpendicular to the first direction and the second direction, respectively. This can simplify the structure of the electrical control box 10 and make the arrangement of the first air duct 11a and the second air duct 11d more compact.

[0127] Please continue reading. Figures 5 to 8 The first air duct 11a and the second air duct 11d can be separated. A part of the air outlet 11c is connected to the first air duct 11a, and the other part of the air outlet 11c is connected to the second air duct 11d.

[0128] Separation means that the first air duct 11a and the second air duct 11d are not connected, and the airflow can only enter one of the first air duct 11a and the second air duct 11d, thereby ensuring the heat dissipation effect of the inductor 131 and the heat sink 14 at the same time.

[0129] In another embodiment, parts of the first air duct 11a and the second air duct 11d can be connected; for example, the ends of the first air duct 11a and the second air duct 11d near the air outlet 11c are connected. Please refer to [link / reference]. Figure 5 and Figure 7 The first box 11 may have a second air guide 1112 disposed outside the second air inlet 11e.

[0130] In an embodiment where the first housing 11 includes a first shell 111 and a second shell 112, the second air guide vane 1112 may be disposed on the first shell 111.

[0131] The second guide vane 1112 is used to increase the airflow entering the second air duct 11d. The second guide vane 1112 can be located on the side of the second air inlet 11e close to the air outlet 11c along the second direction, and is inclined towards the direction close to the second air inlet 11e. When the airflow reaches the second guide vane 1112, it can enter the second air duct 11d from the second air inlet 11e along the second guide vane 1112.

[0132] The tilt angle of the second air guide 1112 can be the same as the tilt angle of the first air guide 1111.

[0133] In addition, the second air guide plate 1112 can also play a certain role in blocking water, so as to prevent rainwater, condensate and other liquids from entering the second air duct 11d from the second air inlet 11e.

[0134] In one embodiment, please refer to Figure 7 and Figure 10 The first box 11 may have a connecting opening 112a that extends through the first box 11 in a first direction. The heat sink 14 is inserted into the connecting opening 112a and extends to the outside of the first box 11 through the connecting opening 112a, which can further improve the heat dissipation effect of the heat sink 14.

[0135] In an embodiment where the first housing 11 includes a first shell 111 and a second shell 112, the second shell 112 may have a connecting opening 112a extending through the second shell 112 in a first direction, and the first shell 111 has a second clearance opening 111a that avoids the connecting opening 112a. The heat sink 14 passes through the connecting opening 112a and the second clearance opening 111a and extends to the outside of the first housing 11 through the second clearance opening 111a.

[0136] For example, please refer to Figure 4 The air outlet 11c can be located on the side of the heat sink 14 away from the heat exchanger 40, and at least towards the part of the heat sink 14 located outside the first housing 11. That is to say, the airflow from the air outlet 11c can flow directly to the part of the heat sink 14 located outside the first housing 11, so as to improve the heat dissipation effect of the heat sink 14.

[0137] Taking the heat sink 14 as an example, which includes multiple spaced heat sinks, a heat dissipation channel is formed between adjacent heat sinks so that airflow can pass through. The angle between each heat sink and the evaporator can be 70° to 90° (including the endpoint value) so that the airflow from the heat dissipation channel can flow more smoothly to the heat exchanger 40, thereby increasing the heat exchange efficiency of the heat exchanger 40.

[0138] In one embodiment, please refer to Figure 8 , Figure 9 and Figure 11The inductor assembly 13 may include a base 132 with a mounting port, the base 132 being disposed on the control board 12, and a portion of the inductor element 131 being located within the mounting port. The control box 10 includes a sealing assembly 15, which includes a first sealing ring 151 and a second sealing ring 152. The first sealing ring 151 is fitted onto the outer periphery of the inductor element 131 and makes sealing contact with the portion of the base 132 located around the mounting port and with the first box body 11, respectively. The second sealing ring 152 is fitted onto the outer periphery of the heat sink 14 and makes sealing contact with the first box body 11. In other words, the inductor assembly 13 and the first box body 11 are sealed together by providing sealing rings.

[0139] The base 132 is used to mount the inductor 131. For example, the pins of the inductor 131 can be fixed on the base 132, and then the base 132 can be directly plugged into the control board 12 to realize the electrical connection between the inductor 131 and the control board 12.

[0140] The materials of the first sealing ring 151 and the second sealing ring 152 are not limited. For example, the first sealing ring 151 and the second sealing ring 152 can be made of materials with certain elasticity and compressibility, such as rubber and silicone. The first sealing ring 151 and the second sealing ring 152 made of rubber, silicone and other materials not only have good sealing performance, but also can improve the assembly tolerance through their own elastic deformation, thereby achieving stable sealing.

[0141] For example, please refer to Figure 8 and Figure 9 The electrical control box 10 includes a second housing 112. The electrical control box 10 may have an installation space located on the side of the second housing 112 opposite to the first air duct 11a, and the electrical control board 12 is disposed in the installation space. The first sealing ring 151, by sealingly contacting the base 132 and the first box body 11 respectively, allows a portion of the inductor 131 to extend into the first air duct 11a for heat dissipation, and also seals the installation space at the location of the first sealing ring 151. The second sealing ring 152, by sealingly contacting the heat sink 14 and the second housing 112 respectively, allows a portion of the heat sink 14 to extend outside the installation space for heat dissipation, and also seals the installation space at the location of the second sealing ring 152.

[0142] In an embodiment where the control box 10 also includes a second box body 17, the second box body 17 is closably disposed on the side of the second housing 112 away from the first housing 111, and together with the second housing 112, it encloses an installation space, thereby facilitating the maintenance of the control board 12.

[0143] When the second housing 17 is in the closed state, the second housing 17 can apply a certain compressive force to the first sealing ring 151 and the second sealing ring 152, so that the first sealing ring 151 and the second sealing ring 152 will produce a certain elastic deformation under the action of the compressive force, thereby enhancing the sealing effect and sealing stability.

[0144] Preferably, the elastic deformation of both the first sealing ring 151 and the second sealing ring 152 can be less than 2 mm.

[0145] For example, please refer to Figure 9 and Figure 10 The portion of the first housing 11 located around the first clearance opening 112b can seal the first clearance opening 112b by making sealing contact with the first sealing ring 151. For example, please refer to... Figure 7 and Figure 10 The first housing 11 has a second clearance opening 111a that avoids the connecting opening 112a. The heat sink 14 passes through the connecting opening 112a and the second clearance opening 111a and extends to the outside of the first housing 11 through the second clearance opening 111a. The part of the first housing 11 located on the periphery of the connecting opening 112a is in sealing contact with the second sealing ring 152, which can seal the connecting opening 112a.

[0146] Please see Figure 11 and Figure 12 The sealing assembly 15 may also include a connector 153, which is connected to the first sealing ring 151 and the second sealing ring 152 respectively.

[0147] In other words, the first sealing ring 151 and the second sealing ring 152 can be connected into a whole by the connector 153, thereby improving the assembly efficiency of the first sealing ring 151 and the second sealing ring 152.

[0148] Preferably, the first sealing ring 151, the second sealing ring 152, and the connector 153 can be integrally formed.

[0149] To reduce the distance between the first sealing ring 151 and the second sealing ring 152, the positions of the inductor assembly 13 and the heat sink 14 can be as close as possible. For example, the distance between the inductor assembly 13 and the heat sink 14 can be less than 80mm. This can reduce the size of the connector 153, which not only helps to improve the reliability of the connector 153 connection, but also helps to reduce the production cost of the sealing assembly 15.

[0150] In some other embodiments, the sealing assembly 15 may not have a connector 153, that is, the first sealing ring 151 and the second sealing ring 152 are two separate sealing rings.

[0151] In one embodiment, please refer to Figure 9 , Figure 11 and Figure 12 The first sealing ring 151 may have a first snap-fit ​​portion 1511, and the base 132 may have a second snap-fit ​​portion 1321. Figure 9 The first snap-fit ​​portion 1511 shown is a slot, and the second snap-fit ​​portion 1321 is a buckle. In another embodiment, the first snap-fit ​​portion 1511 can be a buckle, and the second snap-fit ​​portion 1321 can be a slot. By snapping the buckle into the slot, the first sealing ring 151 can be fixed, thereby facilitating the assembly and disassembly of the first sealing ring 151 and improving the assembly efficiency of the first sealing ring 151.

[0152] It should be noted that, depending on the specific structural form of the slot and the buckle, some buckles and slots are only used to fix the first sealing ring 151 on the base 132 through snap-fit, while some buckles and slots can also serve as a seal in addition to snap-fit.

[0153] For example, please refer to Figure 11 and Figure 12 The first sealing ring 151 has a first sealing opening 151a penetrating through the first sealing ring 151. An inductor 131 passes through the first sealing opening 151a. In one embodiment, a first engaging portion 1511 may be disposed on the side of the first sealing ring 151 near the first sealing opening 151a; that is, the first engaging portion 1511 is located within the first sealing opening 151a. The base 132 includes a mounting portion 1322 located within the first sealing opening 151a, with the mounting opening penetrating through the mounting portion 1322. A second engaging portion 1321 is disposed on the side of the mounting portion 1322 opposite to the mounting opening; that is, the second engaging portion 1321 is located on the outer periphery of the mounting portion 1322. The inductor 131 passes through the first sealing opening 151a so that the second engaging portion 1321 can extend into the first sealing opening 151a and engage with the first engaging portion 1511.

[0154] Please see Figure 9 and Figure 11 The base 132 may include a seat portion 1323 having a first sealing surface 1323a on one side, and a mounting portion 1322 is disposed on the side of the seat portion 1323 having the first sealing surface 1323a, and the first sealing surface 1323a surrounds the outer periphery of the mounting portion 1322, and the first sealing ring 151 is in sealing contact with the first sealing surface 1323a.

[0155] When the first sealing ring 151 is engaged with the mounting portion 1322, the first sealing surface 1323a of the seat portion 1323 makes sealing contact with the first sealing ring 151. By having the first sealing surface 1323a surround the outer periphery of the mounting portion 1322, the sealing stability between the first sealing ring 151 and the first sealing surface 1323a can be ensured.

[0156] Please continue reading. Figure 9 and Figure 12 The first sealing ring 151 may have a first segment 1512 and a second segment 1513 arranged along the through direction of the first sealing opening 151a. The first segment 1512 protrudes into the first sealing opening 151a so that the side of the first segment 1512 close to the second segment 1513 forms a second sealing surface 1512a. The second sealing surface 1512a is in sealing contact with the mounting part 1322, and the side of the first segment 1512 away from the second segment 1513 is in sealing contact with the first housing 11.

[0157] In other words, the first segment 1512, along the through direction of the first sealing port 151a, makes sealing contact with the base 132 and the first housing 11 on opposite sides to achieve sealing between the inductor assembly 13 and the first housing 11.

[0158] The first segment 1512 protrudes into the interior of the first sealing port 151a and makes sealing contact with the mounting portion 1322 of the base 132, thereby improving the reliability of the seal between the first sealing ring 151 and the base 132, and thus further improving the sealing stability of the electrical control box 10.

[0159] In one embodiment, please refer to Figure 8 and Figure 11 The heat sink 14 may include a heat sink body 141 and a boss 142 surrounding the outer periphery of the heat sink body 141. The second sealing ring 152 is sleeved on the heat sink body 141 and is in sealing contact with the boss 142.

[0160] The heat sink 141 is used for heat dissipation. The type of heat sink 141 is not limited. For example, the heat sink 141 may have a plurality of spaced heat sinks, and airflow passes through the gaps between the heat sinks to achieve heat dissipation.

[0161] The boss 142 is used to install the second sealing ring 152. The second sealing ring 152 makes sealing contact with both the boss 142 and the first housing 11, thereby achieving a better sealing effect.

[0162] Please see Figure 11 and Figure 12 The second sealing ring 152 has a second sealing opening 152a that penetrates the second sealing ring 152, and the heat sink 14 passes through the second sealing opening 152a. In one embodiment, a sealing groove 152b can be provided on the side of the second sealing ring 152 near the second sealing opening 152a, and the boss 142 can extend into the sealing groove 152b.

[0163] The sealing groove 152b is used to engage with the boss 142. The sealing groove 152b is located on the side of the second sealing ring 152 near the second sealing opening 152a, that is, the sealing groove 152b is located on the periphery of the second sealing opening 152a and communicates with the second sealing opening 152a. When the heat sink 14 passes through the second sealing opening 152a and the boss 142 extends into the sealing groove 152b, it can not only fix the second sealing ring 152 on the heat sink 14, but also maintain a stable sealing contact between the second sealing ring 152 and the boss 142. Therefore, it can not only ensure the installation stability of the second sealing ring 152, but also improve the sealing effect of the second sealing ring 152.

[0164] In other embodiments, for those provided with Figure 11 The electrical control box 10 of the bracket 16 shown can also have at least one of the boss 142 and the bracket 16 extending into the sealing groove 152b. That is, the bracket 16 can be engaged with the sealing groove 152b to achieve fixation and sealing, or the boss 142 and the bracket 16 can be engaged with the sealing groove 152b together to achieve fixation and sealing.

[0165] For example, please refer to Figure 11 and Figure 12 The side of the second sealing ring 152 near the second sealing port 152a may have a snap-fit ​​block 1521 and a protruding edge 1522 spaced apart along the through direction of the second sealing port 152a, and a sealing groove 152b is formed at the interval between the snap-fit ​​block 1521 and the protruding edge 1522.

[0166] In addition to forming the sealing groove 152b, the protruding edge 1522 can also be used for sealing contact with the first housing 11.

[0167] For example, please refer to Figure 8 , Figure 11 and Figure 12 When the outer surface of the protruding edge 1522 facing away from the snap-fit ​​block 1521 is flush with the end face of the second sealing ring 152 located on the outer periphery of the second sealing port 152a, the opposite sides of the protruding edge 1522 along the through direction of the second sealing port 152a can respectively seal and contact the heat sink 14 and the first box 11. This can improve the reliability of the seal between the second sealing ring 152 and the heat sink 14, and further improve the sealing stability of the electrical control box 10.

[0168] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0169] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. An electrical control box, characterized in that, include: The first housing has a first air duct and a first air inlet, an air outlet and a first clearance opening respectively connected to the first air duct. The first clearance opening is located on one side of the first air duct along the first direction of the electrical control box and is located between the first air inlet and the air outlet. The first air inlet faces the inner wall of the first air duct. An electronic control board is disposed on the outside of the first air duct and on the side of the first air duct where the first clearance opening is provided; An inductor assembly disposed on the electronic control board includes an inductor element electrically connected to the electronic control board. At least a portion of the structure of the inductor element extends into the first air duct from the first clearance opening, and the inductor element is suspended on the side opposite to the electronic control board along the first direction.

2. The electrical control box according to claim 1, characterized in that, The first air inlet and the air outlet are located on opposite sides of the first air duct along a second direction perpendicular to the first direction, and the first air inlet is located on the side of the first air duct away from the electronic control board.

3. The electrical control box according to claim 1, characterized in that, The first air inlet and the air outlet are respectively located on opposite sides of the first air duct along a second direction perpendicular to the first direction. The first air duct includes a first sub-channel communicating with the first air inlet and an inductor receiving cavity communicating with the first sub-channel through a first air passage. The inductor receiving cavity is located on the side of the first sub-channel closer to the electronic control board, and the first air passage is located on the side of the first air inlet along the second direction closer to the air outlet. The first clearance is communicating with the inductor receiving cavity.

4. The electrical control box according to claim 3, characterized in that, The first sub-channel includes a first channel segment and a second channel segment. The first channel segment is located on the side of the second channel segment away from the air outlet along the second direction, and the side of the first channel segment near the electronic control board protrudes from the second channel segment. The first channel segment is connected to the first air inlet. The inductor receiving cavity is located on the side of the second channel segment near the electronic control board, and the inductor receiving cavity is connected to the second channel segment through the first air outlet.

5. The electrical control box according to claim 4, characterized in that, The first housing has a protrusion located within the first channel segment. The protrusion is disposed between the second channel segment and the first air inlet, and extends toward the electronic control board to form a second air outlet within the first channel segment. The second air outlet is located on the side of the protrusion near the electronic control board.

6. The electrical control box according to claim 1, characterized in that, The first air inlet and the air outlet are located on opposite sides of the first air duct along a second direction perpendicular to the first direction. The first air duct includes an inductor housing cavity and a second sub-channel that communicates with the inductor housing cavity through a third air outlet. The second sub-channel is located on the side of the inductor housing cavity away from the first air inlet along the second direction and extends away from the electronic control board.

7. The electrical control box according to claim 6, characterized in that, The third air inlet and the air outlet are located on opposite sides of the second sub-channel along the second direction, and the third air inlet and the air outlet are offset from each other.

8. The electrical control box according to any one of claims 1-7, characterized in that, The first housing has a first air guide vane disposed outside the first air inlet. The first air guide vane is located on the side of the first air inlet near the air outlet along a second direction perpendicular to the first direction, and is inclined toward the direction of the first air inlet.

9. The electrical control box according to claim 1, characterized in that, The electrical control box includes a heat sink disposed on the electrical control board, and the air outlet faces the heat sink.

10. The electrical control box according to claim 9, characterized in that, The first box has a second air duct and a second air inlet, and the second air duct is connected to the second air inlet and the air outlet respectively.

11. The electrical control box according to claim 10, characterized in that, The second air duct and the first air duct are located on the same side of the air outlet along the second direction, and the second direction is perpendicular to the first direction; The second air duct is located on one side of the first air duct along a third direction, which is perpendicular to both the first and second directions; and / or, The first air duct and the second air duct are separated, a portion of the air outlet is connected to the first air duct, and another portion of the air outlet is connected to the second air duct; and / or, The first housing has a second air guide vane disposed outside the second air inlet. The second air guide vane is located on the side of the second air inlet close to the air outlet along the second direction and is inclined toward the direction close to the second air inlet.

12. The electrical control box according to claim 9 or 10, characterized in that, The first housing has a through-hole extending through the first housing in the first direction, and the heat sink is disposed in the through-hole and extends to the outside of the first housing through the through-hole.

13. The electrical control box according to claim 12, characterized in that, The air outlet is located on one side of the heat sink along the second direction, and at least towards the part of the heat sink located outside the first housing. The heat sink includes a heat sink body with multiple heat sinks, and the multiple heat sinks are spaced apart along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

14. The electrical control box according to any one of claims 9-11, characterized in that, The inductor assembly includes a base with a mounting port, the base being disposed on the control board, and a portion of the inductor element's structure being located within the mounting port. The control box includes a sealing assembly, which includes a first sealing ring and a second sealing ring. The first sealing ring is fitted around the outer periphery of the inductor element and makes sealing contact with the portion of the base located around the mounting port and the first box body, respectively. The second sealing ring is fitted around the outer periphery of the heat sink and makes sealing contact with the first box body.

15. The electrical control box according to claim 14, characterized in that, The portion of the first housing located around the first clearance opening is in sealing contact with the first sealing ring; and / or, The first housing has a through-hole extending through the first housing in the first direction. The heat sink passes through the through-hole and extends to the outside of the first housing through the through-hole. The portion of the first housing located around the through-hole is in sealing contact with the second sealing ring; and / or, The sealing assembly includes a connector that is connected to the first sealing ring and the second sealing ring respectively.

16. The electrical control box according to claim 14, characterized in that, The first sealing ring has a first snap-fit ​​portion, and the base has a second snap-fit ​​portion. One of the first snap-fit ​​portion and the second snap-fit ​​portion is a slot, and the other is a buckle. The buckle is snapped into the slot.

17. The electrical control box according to claim 16, characterized in that, The first sealing ring has a first sealing opening that penetrates the first sealing ring, the inductor element is disposed in the first sealing opening, the first snap-fit ​​portion is disposed on the side of the first sealing ring near the first sealing opening, the base includes a mounting portion located in the first sealing opening, the mounting opening penetrates the mounting portion, and the second snap-fit ​​portion is disposed on the side of the mounting portion opposite to the mounting opening.

18. The electrical control box according to claim 17, characterized in that, The base includes a seat portion having a first sealing surface on one side, a mounting portion disposed on the side of the seat portion having the first sealing surface, and the first sealing surface surrounding the outer periphery of the mounting portion, the mounting opening penetrating the seat portion, and the first sealing ring in sealing contact with the first sealing surface; and / or, The first sealing ring has a first segment and a second segment arranged along the through direction of the first sealing opening. The first segment protrudes into the first sealing opening so that the side of the first segment close to the second segment forms a second sealing surface. The second sealing surface is in sealing contact with the mounting part, and the side of the first segment away from the second segment is in sealing contact with the first housing.

19. The electrical control box according to claim 14, characterized in that, The heat sink includes a heat sink body and a boss surrounding the outer periphery of the heat sink body. The second sealing ring is fitted onto the heat sink body and makes sealing contact with the boss.

20. The electrical control box according to claim 19, characterized in that, The second sealing ring has a second sealing opening that penetrates the second sealing ring and a sealing groove located on the side of the second sealing ring near the second sealing opening, and the heat dissipation component passes through the second sealing opening; The boss extends into the sealing groove; or... The electrical control box includes a bracket disposed on the electrical control board and supporting the heat sink, wherein at least one of the boss and the bracket extends into the sealing groove.

21. The electrical control box according to any one of claims 1-7, characterized in that, The electrical control box also includes an openable and closable second box, and the electrical control board is disposed in the second box.

22. The electrical control box according to any one of claims 1-7, characterized in that, The first housing includes a first shell and a second shell. The second shell is disposed on one side of the first shell along the first direction and together with the first shell, forms the first air duct. The first air inlet is disposed on the first shell, the first clearance opening is disposed on the second shell, and the air outlet is disposed on at least one of the first shell and the second shell.

23. A head assembly, characterized in that, include: Water tray; A cover is provided on one side of the water receiving tray. The cover has a mounting cavity and an airflow inlet and an airflow outlet respectively communicating with the mounting cavity. An airflow path is formed between the airflow inlet and the airflow outlet. The electrical control box according to any one of claims 1-22, wherein the electrical control box is disposed in the mounting cavity and located on the airflow path, and the electrical control board is located on the side of the inductor assembly away from the water receiving tray.

24. The head assembly according to claim 23, characterized in that, The head assembly also includes a heat exchanger and a compressor disposed in the mounting cavity. The airflow inlet and the airflow outlet are respectively located on opposite sides of the heat exchanger. The compressor is located on the side of the heat exchanger closer to the airflow inlet, and the electrical control box is located on the side of the compressor away from the water receiving tray.

25. The head assembly according to claim 24, characterized in that, The first air inlet faces the water receiving tray; and / or, The first housing has a through-hole extending through the first housing along the first direction. The electrical control box includes a heat sink disposed on the electrical control board. The heat sink passes through the through-hole and extends to the outside of the first housing through the through-hole. The air outlet is located on the side of the heat sink away from the heat exchanger and is at least facing the portion of the heat sink located outside the first housing; and / or, The head assembly includes a support member and a fan wheel bracket. The support member is located on the side of the heat exchanger near the airflow inlet, and the fan wheel bracket is located on the side of the heat exchanger away from the support member. The electrical control box is connected to both the fan wheel bracket and the support member.

26. A heat pump water heater, characterized in that, It includes a water tank assembly and a machine head assembly as described in any one of claims 23-25, wherein the machine head assembly is disposed on the water tank assembly.

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