Heat pump water heater and head assembly thereof

Abstract

Provided in the present invention are a heat pump water heater and a head assembly thereof. The head assembly comprises: a housing (100); an electrical control module (200) arranged in the housing (100); and a relay module (300) arranged in the housing (100) and spaced apart from the electrical control module (200) in a circumferential direction of the housing (100).

Description

[0001] This application claims priority of a Chinese patent application filed to CNPIA on August 31, 2023 with application number 2023111228985 and entitled "Heat Pump Water Heater and Head Assembly Thereof", and a Chinese patent application filed to CNIPA on August 31, 2023 with application number 202322371628X and entitled "Heat Pump Water Heater and Head Assembly Thereof", and a Chinese patent application filed to CNIPA on August 31, 2023 with application number 2023111200072 and entitled "Electrical Control Box, Wire-passing Structure and Heat Pump Water Heater", the contents of which should be understood to be incorporated herein by reference.Technical Field

[0002] The present application relates to, but is not limited to, the technical field of household appliances, and specifically relates to a heat pump water heater and a head assembly thereof.Background

[0003] A head assembly of the related heat pump water heater includes a housing, an electrical control box, a wiring module and a DR (Demand Respond) module, and etc. The electrical control box is upright mounted in the housing, the DR module is mounted on a top wall of the housing and protrudes upward relative to the top wall of the housing, and a side wall of the housing is provided with an access port for inspecting and maintaining the electrical control box. The electrical control box includes a box main body, a box lid, an electrical control main board and a relay main board. An opening of the housing faces the access port. The electrical control main board and the relay main board are both arranged in the box main body and are upright arranged in an up-down direction in sequence. The box lid covers and is mounted on the box main body. Improving the operating performance of heat pump water heaters in high-temperature environments is a technical challenge that those skilled in the art have been continuously dedicated to addressing.Summary

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the protection scope of the claims.

[0005] A head assembly for a heat pump water heater according to an embodiment of the present disclosure includes: a housing; an electrical control module arranged in the housing; and a relay module arranged in the housing and spaced apart from the electrical control module in a circumferential direction of the housing.

[0006] In some exemplary embodiments, the head assembly further includes a wiring module located outside the relay module in a radial direction of the housing and arranged on a side wall of the housing.

[0007] In some exemplary embodiments, the wiring module includes a junction box. The side wall of the housing is provided with a first mounting port, and the junction box is fixedly connected at the first mounting port from outside to inside along the radial direction of the housing.

[0008] In some exemplary embodiments, the relay module includes: a first accommodation box main body arranged in the housing, an opening of the first accommodation box main body facing the first mounting port; a relay main board arranged in the first accommodation box main body; and a first cover-mounted box lid fixedly connected to the first accommodation box main body from outside to inside along the radial direction of the housing.

[0009] In some exemplary embodiments, a size of the first mounting port is not less than a size of the first cover-mounted box lid.

[0010] In some exemplary embodiments, the head assembly further includes a display module located outside the electrical control module in a radial direction of the housing and arranged on a side wall of the housing.

[0011] In some exemplary embodiments, the display module includes a display panel. The side wall of the housing is provided with a second mounting port, and the display panel is fixedly connected at the second mounting port from outside to inside along the radial direction of the housing.

[0012] In some exemplary embodiments, the electrical control module includes: a second accommodation box main body arranged in the housing, an opening of the second accommodation box main body facing the second mounting port; an electrical control main board arranged in the second accommodation box main body; and a second cover-mounted box lid fixedly connected to the second accommodation box main body from outside to inside along the radial direction of the housing.

[0013] In some exemplary embodiments, a size of the second mounting port is not less than a size of the second cover-mounted box lid.

[0014] In some exemplary embodiments, the head assembly further includes a DR module arranged on a side surface of the wiring module facing away from the relay module, and a size of the DR module is not larger than a size of the wiring module.

[0015] In some exemplary embodiments, a center angle formed by a projection of a center of the electrical control module and a center of the relay module on a bottom wall of the housing and a center of the bottom wall of the housing is no greater than 90 degrees.

[0016] In some exemplary embodiments, the electrical control module or the relay module includes: a first housing having a mounting port, the first housing including a first box body and a first box lid covering the first box body; a wire-passing structure arranged at the mounting port, the wire-passing structure including a first sealing portion having a first sealing port and a second sealing portion having a second sealing port. Both the first sealing port and the second sealing port are recoverably expanded, the second sealing portion is arranged outside the first sealing portion, and the first sealing port is in communication with the second sealing port.

[0017] In some exemplary embodiments, an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, and the water-baffling enclosure shields at least a part of the wire-passing structure.

[0018] In some exemplary embodiments, the first sealing port and the second sealing port respectively extend from a first side of the wire-passing structure to a second side opposite to the first side. One end of the first sealing port close to the second side penetrates the first sealing portion to form a first wire-passing opening, and one end of the second sealing port close to the second side penetrates the second sealing portion to form a second wire-passing opening.

[0019] In some exemplary embodiments, the first sealing portion further has a first guide groove in communication with the first wire-passing opening, a side of the first guide groove facing away from the first wire-passing opening is open to form a first opening mouth, and the first guide groove gradually expands from the first wire-passing opening to the first opening mouth.

[0020] In some exemplary embodiments, the second sealing portion further has a second guide groove in communication with the second wire-passing opening, a side of the second guide groove facing away from the second wire-passing opening is open to form a second opening mouth, and the second guide groove gradually expands from the second wire-passing opening to the second opening mouth.

[0021] In some exemplary embodiments, the mounting port is arranged on a side wall of the first box body, the first opening mouth faces the first box lid, an edge of the first box lid has a protrusion protruding toward the first box body, and the protrusion extends into the first guide groove and abuts against the first sealing portion.

[0022] In some exemplary embodiments, a portion of a region of the first sealing portion facing away from the second sealing portion protrudes in a direction away from the second sealing portion to form a convex rib, and the convex rib encloses to form a first wire-passing groove in communication with the first sealing port and the first wire-passing opening, respectively.

[0023] In some exemplary embodiments, a buckle is provided on a side of the convex rib facing away from the first wire-passing groove, and the buckle is snapped into the first housing.

[0024] In some exemplary embodiments, a portion of a region of the second sealing portion close to the first sealing portion is recessed in a direction away from the first sealing portion to form a second wire-passing groove in communication with the first sealing port, the second sealing port, and the second wire-passing opening, respectively.

[0025] In some exemplary embodiments, a groove opening in communication with the second wire-passing groove is provided on a side of the second wire-passing groove opposite to the second wire-passing opening, and a side of the second sealing portion having the groove opening is sealingly fitted with the first housing to close the groove opening.

[0026] In some exemplary embodiments, an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, the water-baffling enclosure shields at least a part of the wire-passing structure, and a side of the second sealing portion having the groove opening is located in the water-baffling enclosure and sealingly fitted with the water-baffling enclosure.

[0027] In some exemplary embodiments, the second sealing port penetrates a side of the second sealing portion having the groove opening, and the second sealing portion further has at least one cutting slit that intersects the second sealing port.

[0028] In some exemplary embodiments, the water-baffling enclosure includes a first wall and a second wall, and the first wall and the second wall define a water-baffling groove having an avoidance port and the wire-passing port. The first wall and the avoidance port are respectively located on opposite sides of the second wall in a first direction. At least the first side of the wire-passing structure is located in the water-baffling groove and faces the first wall.

[0029] In some exemplary embodiments, the wire-passing port is located on a side of the second wall along a second direction. The wire-passing port is located on a bottom side of the second wall when the head assembly is in an operational state. The second direction intersects the first direction.

[0030] In some exemplary embodiments, one of the first box body and the first box lid has a sealing groove, and the other of the first box body and the first box lid is inserted into the sealing groove so that the first box body is sealingly fitted with the first box lid.

[0031] In some exemplary embodiments, the head assembly further includes a second housing, and the second housing includes a second box body arranged outside the first box body and a second box lid arranged outside the first box lid.

[0032] In some exemplary embodiments, the head assembly includes a capacitor and a sealing sleeve, and the first box body is provided with a mounting tube. A first end of the mounting tube protrudes from an outer surface of the first box body, the capacitor extends through the mounting tube, and the sealing sleeve is sealingly sleeved at the first end of the mounting tube to close the first end.

[0033] In some exemplary embodiments, the head assembly further includes a second housing, the second housing includes a second box body arranged outside the first box body and having a through hole, the mounting tube extends through the through hole, and the first box body is fitted against a part of the second box body located on a peripheral side of the through hole.

[0034] In some exemplary embodiments, the first box body and the second box body are spaced apart in a partial region to form a spacing space, and a plurality of reinforcing ribs located in the spacing space are provided on a side of the first box body close to the second box body. When the head assembly is in an operational state, at least one of the reinforcing ribs is located on a lower side of the mounting tube, and the reinforcing rib located on the lower side of the mounting tube is spaced apart from the second box body, so that a drainage gap is formed at the spacing.

[0035] A heat pump water heater according to an embodiment of the present disclosure includes the head assembly described in any one of the above embodiments.

[0036] According to the technical solution provided by an embodiment of the present disclosure, the relay module is independent of the electrical control module, so that a height of the electrical control module can be made less compared to a height of the electrical control box in the related art, and a height of the relay module can also be made less compared to the height of the electrical control box in the related art. Further, the relay module and the electrical control module are spaced apart in the circumferential direction of the housing, therefore, the height of the housing is not required to be increased. In addition, a heat generation of the electrical control module is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module in the high-temperature environment is lower, and the temperature inside the relay module in the high-temperature environment is also lower. Therefore, the relay module and the electrical control module have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0037] Other aspects will become apparent after reading and understanding the drawings and detailed description.Brief Description of Drawings

[0038] FIG. 1 is a schematic front view of a structure of a head assembly provided by some embodiments of the present application; FIG. 2 is a schematic top view of a cross-sectional structure of the head assembly shown in FIG. 1; FIG. 3 is a schematic exploded view of a structure of the head assembly shown in FIG. 1; FIG. 4 is a schematic view of a structure of a head assembly of a heat pump water heater according to an embodiment of the present application; FIG. 5 is a schematic view of an internal structure of the head assembly shown in FIG. 4, in which an electrical control module is in an operational state; FIG. 6 is an exploded view of the electrical control module shown in FIG. 5; FIG. 7 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 8 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 9 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 10 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5, in which a wire harness is shown; FIG. 11 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 12 is a schematic structural view of a wire-passing structure shown in FIG. 6 from one perspective; FIG. 13 is a schematic structural view of the wire-passing structure shown in FIG. 12 from another perspective; FIG. 14 is a schematic structural view of the wire-passing structure shown in FIG. 12 from yet another perspective; FIG. 15 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 16 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 17 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; and FIG. 18 is a schematic view of a portion of a structure of a first box body shown in FIG. 5.

[0039] In the drawings, components represented by reference signs are listed as follows: 100 housing, 110 first mounting port, 120 second mounting port, 200 electrical control module, 210 second accommodation box main body, 220 electrical control main board, 230 second cover-mounted box lid, 300 relay module, 310 first accommodation box main body, 320 relay main board, 330 first cover-mounted box lid, 400 wiring module, 500 display module, 600 DR module; 1000 head assembly, 11 first housing, 11a mounting port, 11b water-baffling enclosure, 11b1 first wall, 11b2 second wall, 11c wire-passing port, 11d avoidance port, 11e water-baffling groove, 111 first box body, 111a mounting tube, 111b reinforcing rib, 111c drainage gap, 112 first box lid, 112a protrusion, 112b sealing groove, 12 wire-passing structure, 121 first sealing portion, 121a first sealing port, 121b first wire-passing opening, 121c first guide groove, 121d convex rib, 121e first wire-passing groove, 121f buckle, 122 second sealing portion, 122a second sealing port, 122b second wire-passing opening, 122c second guide groove, 122d second wire-passing groove, 122e groove opening, 122f cutting slit, 13 second housing, 131 second box body, 131a through hole, 131b spacing space, 132 second box lid, 14 capacitor, 14a vent hole, 15 sealing sleeve, 20 wire harness. Detailed Description

[0040] A clear and complete description of the technical solutions of the embodiments of the present application will be given below with reference to the accompanying drawings in the embodiments of the present application, and it will be apparent that the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained without creative effort by those of ordinary skills in the art fall within the scope of protection of the present application.

[0041] The present application provides a head assembly that exhibits better operating performance in high-temperature environments.

[0042] The present application also provides a heat pump water heater.

[0043] As shown in FIGs. 1 to 3, a head assembly for a heat pump water heater provided by an embodiment of the present disclosure includes: a housing 100; an electrical control module 200 arranged in the housing 100; and a relay module 300 arranged in the housing 100 and spaced apart from the electrical control module 200 in a circumferential direction of the housing 100.

[0044] The relay module 300 is independent of the electrical control module 200, so that a height of the electrical control module 200 can be made less than a height of the electrical control box in the related art, and a height of the relay module 300 can also be made less than the height of the electrical control box in the related art. Further, the relay module 300 and the electrical control module 200 are spaced apart in a circumferential direction of the housing 100. Therefore, the height of the housing 100 is not required to be increased. In addition, a heat generation of the electrical control module 200 is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module 300 is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module 200 in the high-temperature environment is lower, and the temperature inside the relay module 300 in the high-temperature environment is also lower. Therefore, the relay module 300 and the electrical control module 200 have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0045] In some exemplary embodiments, the head assembly further includes a wiring module 400 located outside the relay module 300 in a radial direction of the housing 100 and provided on a side wall of the housing 100, and the wiring module 400 is configured to be electrically connected to a mains power supply. The wiring module 400 is located outside the relay module 300 in the radial direction of the housing 100, which facilitates wiring between the wiring module 400 and the relay module 300.

[0046] In some examples, as shown in FIGs. 1 to 3, the wiring module 400 includes a junction box. The side wall of the housing 100 is provided with a first mounting port 110, and the junction box is fixedly connected at the first mounting port 110 from outside to inside along the radial direction of the housing 100.

[0047] The side wall of the housing 100 is provided with the first mounting port 110, and the junction box is fixedly connected at the first mounting port 110 from outside to inside along the radial direction of the housing 100. The relay module 300 can be inspected and maintained from the first mounting port 110 by disassembling the junction box from the housing 100 outside the housing 100. In this technical scheme, the process of inspecting and maintaining the relay module 300 is more convenient, and there is no need to specially provide an access port for inspecting and maintaining the relay module 300 on the housing 100, so that the aesthetic and integrity of the head assembly can be improved.

[0048] A port wall of the first mounting port 110 may be provided with a buckle position, the junction box may be provided with a buckle, and the buckle is snapped on the buckle position from outside to inside along the radial direction of the housing 100, so that the junction box is fixedly connected to the port wall of the first mounting port 110. Alternatively, the port wall of the first mounting port 110 may be provided with a screw hole, the junction box is provided with a through hole, and a screw is screwed in the screw hole through the through hole from outside to inside along the radial direction of the housing 100, so that the junction box is fixedly connected to the port wall of the first mounting port 110, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0049] In some examples, as shown in FIGs. 2 and 3, the relay module 300 includes: a first accommodation box main body 310, the first accommodation box main body 310 being upright arranged in the housing 100, an opening of the first accommodation box main body 310 facing the first mounting port 110; a relay main board 320 arranged in the first accommodation box main body 310 and arranged along an up-down direction; and a first cover-mounted box lid 330 fixedly connected to the first accommodation box main body 310 from outside to inside along the radial direction of the housing 100.

[0050] By disassembling the junction box outside the housing 100, and then disassembling the first cover-mounted box lid 330 from the first mounting port 110, the relay main board 320 can be inspected and maintained from the first mounting port 110. The inspection and maintenance process of the relay main board 320 (i.e., the process of point inspecting the relay main board 320) in this technical scheme is more convenient.

[0051] In some examples, as shown in FIG. 3, a size (including length and width) of the first mounting port 110 is not less than a size (including length and width) of the first cover-mounted box lid 330. This facilitates disassembling the first cover-mounted box lid 330 from the first mounting port 110, and can also realize that the first cover-mounted box lid 330 is taken out from the first mounting port 110 and mounted into the first mounting port 110. It is more beneficial for the inspecting and maintaining the relay main board 320 after the first cover-mounted box lid 330 is taken out from the first mounting port 110. In this technical scheme, the inspection and maintenance process of the relay main board 320 is more convenient.

[0052] In some exemplary embodiments, as shown in FIGs. 1 to 3, the head assembly further includes a display module 500 located outside the electrical control module 200 in the radial direction of the housing 100 and arranged on the side wall of the housing 100 to facilitate wiring between the display module 500 and the electrical control module 200.

[0053] In some examples, as shown in FIGs. 1 to 3, the display module 500 includes a display panel, and the side wall of the housing 100 is provided with a second mounting port 120. The display panel is fixedly connected at the second mounting port 120 from outside to inside along the radial direction of the housing 100.

[0054] The side wall of the housing 100 is provided with the second mounting port 120, and the display panel is fixedly connected to the second mounting port 120 from outside to inside along the radial direction of the housing 100. The electrical control module 200 can be inspected and maintained from the second mounting port 120 by disassembling the display panel outside the housing 100. In this technical scheme, the inspection and maintenance process of the electrical control module 200 is simpler, and there is no need to specially provide an access port for inspecting and maintaining the electrical control module 200 on the housing 100, so that the aesthetic and integrity of the head assembly can be improved.

[0055] In some examples, the port wall of the second mounting port 120 is provided with a buckle position, the display panel is provided with a buckle, and the buckle is snapped on the buckle position from outside to inside along the radial direction of the housing 100, so that the display panel is fixedly connected to the port wall of the second mounting port 120. In this technical scheme, a side surface of the display panel facing away from the electrical control module 200 is smoother and more aesthetic.

[0056] In some examples, as shown in FIGs. 2 and 3, the electrical control module 200 includes: a second accommodation box main body 210, the second accommodation box main body 210 being upright arranged in the housing 100, and an opening of the second accommodation box main body 210 facing the second mounting port 120; an electrical control main board 220 arranged in the second accommodation box main body 210 and arranged in the up-down direction; and a second cover-mounted box lid 230 fixedly connected to the second accommodation box main body 210 from outside to inside along the radial direction of the housing 100.

[0057] The display panel is disassembled outside the housing 100, and then the second cover-mounted box lid 230 is disassembled from the second mounting port 120, so that the electrical control main board 220 can be inspected and maintained from the second mounting port 120. In this technical scheme, the inspection and maintenance process of the electrical control main board 220 (i.e., the process of point inspecting the electrical control main board 220) is simpler.

[0058] In some examples, as shown in FIG. 3, a size (including length and width) of the second mounting port 120 is not less than a size (including length and width) of the second cover-mounted box lid 230. This facilitates disassembling the second cover-mounted box lid 230 from the second mounting port 120, and can also realize that the second cover-mounted box lid 230 is taken out from the second mounting port 120 and mounted into the second mounting port 120. It is more beneficial for the inspecting and maintaining the electrical control main board 220 after the second cover-mounted box lid 230 is taken out from the second mounting port 120. In this technical scheme, the inspection and maintenance process of the electrical control main board 220 is more convenient.

[0059] In some exemplary embodiments, as shown in FIGs. 1 to 3, the head assembly further includes a DR module 600, and the DR module 600 is arranged on a side surface of the wiring module 400 facing away from the relay module 300. This is more conducive to the wiring between the DR module 600 and the relay module 300, and can also reduce the overall height of the head assembly, and the height of the corresponding heat pump water heater is less. The DR module 600 is convex to the outside of the housing 100 with respect to the side wall of the housing 100, which facilitates inspection and maintenance of the DR module 600.

[0060] In some examples, as shown in FIGs. 1 to 3, a size (including length and width) of the DR module 600 is not greater than a size (including length and width) of the wiring module 400, which facilitates quick mounting of the DR module 600 on the wiring module 400.

[0061] The wiring module 400 may be provided with a buckle position, the DR module 600 may be provided with a buckle, and the buckle is snapped on the buckle position, so that the DR module 600 is fixedly connected to the side surface of the wiring module 400 facing away from the relay module 300. Alternatively, the wiring module 400 may be provided with a screw hole, the DR module 600 may be provided with a through hole, and a screw is screwed in the screw hole through the through hole, so that the DR module 600 is fixedly connected to the side surface of the wiring module 400 facing away from the relay module 300, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0062] In some exemplary embodiments, as shown in FIG. 2, a center angle formed by a projection of a center (i.e., a geometric center) of the electrical control module 200 and a center (i.e., a geometric center) of the relay module 300 on a bottom wall of the housing 100 and a center (i.e., a geometric center) of the bottom wall of the housing 100 is not more than 90 degrees. This facilitates the smooth wiring of the electrical control module 200, the display module 500, the relay module 300, the wiring module 400 and the DR module 600, and the DR module 600 will not interfere with the wall when the heat pump water heater is mounted on the wall.

[0063] An electrical control box provided by a related art has a height of 342 mm. After designed into the electrical control module 200 and the relay module 300 of the present application, the height of the electrical control module 200 is 312 mm (the height of the relay module 300 is less than the height of the electrical control module 200), which is beneficial to reducing the height of the housing 100. Moreover, a maximum temperature inside the electrical control module 200 and a maximum temperature inside the relay module 300 are both less than the maximum temperature inside the electrical control box in the related art, so the electrical control module 200 and the relay module 300 have better operating performance and longer service life.

[0064] An electrical control box provided by another related art has a height of 456 mm. After designed into the electrical control module 200 and the relay module 300 of the present application, the height of the electrical control module 200 is 426 mm (the height of the relay module 300 is less than the height of the electrical control module 200), which is beneficial to reducing the height of the housing 100. Moreover, a maximum temperature inside the electrical control module 200 and a maximum temperature inside the relay module 300 are both less than the maximum temperature inside the electrical control box in the related art, so the electrical control module 200 and the relay module 300 have better operating performance and longer service life.

[0065] In some exemplary embodiments, referring to FIGs. 5, 6, and 8, the electrical control module includes a first housing 11 and a wire-passing structure 12.

[0066] The first housing 11 includes a first box body 111 and a first box lid 112 covering the first box body 111, and the first housing 11 further includes a mounting port 11a.

[0067] In order to achieve a better sealing effect, the first box lid 112 and the first box body 111 are generally required to be sealingly fitted. For example, the first box lid 112 and the first box body 111 may be directly sealed and in contact with each other, and a sealing member such as a sealing ring may be provided between the first box lid 112 and the first box body 111.

[0068] The first accommodation box main body includes a first box body 111, and the first cover-mounted box lid includes a first box lid 112. Alternatively, the second accommodation box main body may include the first box body 111, and the second cover-mounted box lid may include the first box lid 112, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0069] In some examples, referring to FIG. 7, the first box lid 112 may be provided with a sealing groove 112b. The first box body 111 is inserted into the sealing groove 112b, so that the first box body 111 and the first box lid 112 are sealingly fitted.

[0070] In FIG. 7, a part of the first box body 111 that is inserted into the sealing groove 112b is in sealing contact with a groove wall of the sealing groove 112b to achieve sealing fitting. In other examples, a sealing member such as a sealing ring may be provided in the sealing groove 112b, and the first box body 111 may abut against the sealing member to achieve sealing fitting between the first box body 111 and the first box lid 112.

[0071] In another example, the first box body 111 may be provided with the sealing groove 112b, and the first box lid 112 may be inserted into the sealing groove 112b.

[0072] The mounting port 11a in FIG. 6 is provided on the first box body 111. In other examples, the mounting port 11a may be provided on the first box lid 112, or the mounting ports 11a may be provided on the first box body 111 and the first box lid 112, respectively.

[0073] The number of mounting ports 11a may be one or a plurality.

[0074] The wire-passing structure 12 is arranged at the mounting port 11a. It can be understood that when the number of the mounting ports 11a is a plurality, each mounting port 11a is respectively provided with the wire-passing structure 12.

[0075] Referring to FIGs. 12 to 14, the wire-passing structure 12 includes a first sealing portion 121 having a first sealing port 121a and a second sealing portion 122 having a second sealing port 122a. Both the first sealing port 121a and the second sealing port 122a can be recoverably expanded. The second sealing portion 122 is arranged outside of the first sealing portion 121, and the first sealing port 121a is in communication with the second sealing port 122a.

[0076] An electrical control main board 220 is mounted in the first housing 11, the electrical control main board 220 has components, and the wire-passing structure 12 is configured for a wire harness 20 electrically connected to the components (i.e., the electrical control board 220) to pass therethrough.

[0077] In some examples, the first sealing port 121a is in communication with an internal space of the first housing 11, the second sealing port 122a is in communication with the outside of the first housing 11, and the wire harness 20 extends through the first sealing port 121a and the second sealing port 122a.

[0078] The wire-passing structure 12 may be an integrally formed structure. For example, the wire-passing structure 12 may be integrally formed by injection molding. Alternatively, the wire-passing structure 12 may be assembled from the first sealing portion 121 and the second sealing portion 122 which are separated from each other. For example, the first sealing portion 121 and the second sealing portion 122 may be assembled to form the wire-passing structure 12 by adhesive bonding.

[0079] The wire-passing structure 12 may be provided with only one first sealing portion 121 and only one second sealing portion 122. Alternatively, the wire-passing structures 12 may be provided with a plurality of first sealing portions 121 and a plurality of sealing portions 122, and the first sealing portions 121 and the second sealing portions 122 are provided in one-to-one correspondence. For example, in FIG. 6, a part of the wire-passing structures 12 is provided with only one first sealing portion 121 and only one second sealing portion 122, a part of the wire-passing structures 12 is provided with two first sealing portions 121 and two second sealing portions 122, and the two first sealing portions 121 and the two sealing portions 122 are provided in one-to-one correspondence.

[0080] Both the first sealing port 121a and the second sealing port 122a can be recoverably expanded, meaning that the wire harness 20 extends through the first sealing port 121a and the second sealing port 122a by expanding the first sealing port 121a and the second sealing port 122a, and the first sealing port 121a and the second sealing port 122a can be restored to the original state when the wire harness 20 is taken out from the first sealing port 121a and the second sealing port 122a.

[0081] In order to facilitate the recoverable expansion of the first sealing port 121a and the second sealing port 122a, in some examples, the wire-passing structure 12 may be made of a material capable of generating certain elastic deformation, such as rubber, plastic, or the like.

[0082] A width dimension of the first sealing port 121a should be less than a diameter of the clamped-in wire harness 20. In some examples, referring to FIG. 13, the first sealing port 121a may have a slit shape.

[0083] Referring to FIG. 13, in order to ensure that the first sealing port 121a can have a good sealing effect, the width dimension D1 of the first sealing port 121a may be greater than or equal to 0.3 mm and less than or equal to 0.8 mm. In some examples, the width dimension D1 of the first sealing port 121a having a slit shape may be greater than 0.3 mm and less than 0.8 mm.

[0084] In order to prevent a thickness of the first sealing portion 121 from being small and affecting the sealing effect, in some examples, referring to FIG. 16, a thickness dimension H1 of the first sealing port 121a may be greater than or equal to 1 mm and less than or equal to 2 mm. In some embodiments, the thickness dimension H1 of the first sealing port 121a may be greater than 1 mm and less than 2 mm.

[0085] In some examples, a width dimension of the second sealing port 122a should also be less than the diameter of the clamped-in wire harness 20, and in some examples, referring to FIG. 12, the second sealing port 122a may have a slit shape.

[0086] Referring to FIG. 12, in order to ensure that the second sealing port 122a can have a good sealing effect, the width dimension D2 of the second sealing port 122a may be less than or equal to 0.8 mm. In some examples, the width dimension D2 of the second sealing port 122a having a slit shape may be greater than 0.3 mm and less than or equal to 0.8 mm.

[0087] In order to prevent a thickness of the second sealing portion 122 from being small and affecting the sealing effect, in some examples, referring to FIG. 16, a thickness dimension H2 of the second sealing port 122a may be greater than or equal to 1 mm and less than or equal to 2 mm. In some embodiments, the thickness dimension H2 of the second sealing port 122a may be greater than 1 mm and less than 2 mm.

[0088] Another embodiment of the present application provides a heat pump water heater. Referring to FIGs. 4 and 5, the heat pump water heater includes a water tank and a head assembly 1000 arranged on the water tank.

[0089] The electrical control module and the relay module can be electrically connected to a motor, a heating device, a compressor, a display panel, various sensors, and the like of the heat pump water heater through the wire harness 20. The electrical control module and the relay module are also electrically connected by the wire harness 20.

[0090] It should be noted that the electrical control module described in the embodiment of the present application is not limited to being mounted in the heat pump water heater, and the electrical control module described in the embodiment of the present application can also be used in other electrical apparatuses.

[0091] In the related art, the wire-passing structure on the electrical control module is generally provided with a circular wire-passing hole with a relatively large dimension, a diameter of the wire-passing hole is larger than the diameter of the wire harness, and one or more wire harnesses directly pass through the wire-passing hole. Such wire-passing hole has almost no sealing effect, and water such as rainwater can easily permeate into the electrical control module from the wire-passing hole, causing the components in the electrical control module to short circuit.

[0092] The electrical control module according to the embodiment of the present application is provided with the wire-passing structure 12 including the first sealing portion 121 and the second sealing portion 122. The first sealing portion 121 has a first sealing port 121a, the second sealing portion 122 has a second sealing port 122a, and both the first sealing port 121a and the second sealing port 122a can be recoverably expanded. The first sealing portion 121 is the main sealing structure of the wire-passing structure 12, and the second sealing portion 122 is arranged outside the first sealing portion 121 to increase the resistance to the external air flow, block the impact of the external water flow, and reduce the power of the water flow. That is, the second sealing portion 122 functions to protect the first sealing portion 121. Since the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a by expanding the first sealing port 121a and the second sealing port 122a, both the side wall surfaces of the first sealing port 121a and the second sealing port 122a will be in contact with the wire harness 20 after the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a. A gap between the first sealing port 121a and the wire harness 20 as well as a gap between the second sealing port 122a and the wire harness 20 are relatively small, it is difficult for the external water to pass through the gaps. Therefore, both the first sealing port 121a and the second sealing port 122a can bring good sealing effect. That is, by providing the first sealing portion 121 and the second sealing portion 122 in the wire-passing structure 12 of the embodiment of the present application, at least two layers of sealing can be realized, and the first sealing port 121a and the second sealing port 122a that can be recoverably expanded can also effectively block the external water flow such as rainwater. The wire-passing structure 12 can prevent water flow such as rainwater from permeating into the electrical control module from the wire-passing structure 12, and further can improve the sealing performance of the electrical control module.

[0093] In one embodiment, referring to FIG. 6, the electrical control module may further be provided with a second housing 13. The second housing 13 includes a second box body 131 arranged outside the first box body 111 and a second box lid 132 arranged outside the first box lid 112, which is equivalent to the first housing 11 being arranged in the second housing 13. That is, the electrical control module can be provided with at least two layers of housings to improve the fire-proof and explosion-proof performance of the electrical control module.

[0094] The materials of the first housing 11 and the second housing 13 may be the same or different. For example, both the first housing 11 and the second housing 13 may be a plastic member or a metal member, or one of the first housing 11 and the second housing 13 may be a plastic member and the other thereof may be a metal member.

[0095] The first accommodation box main body includes the first box body 111 and the second box body 131, and the first cover-mounted box lid includes the first box lid 112 and the second box lid 132. The first accommodation box main body and the first cover-mounted box lid collectively include the first housing 11 and the second housing 13. The first housing 11 includes the first box body 111 and the first box lid 112, and the second housing 13 includes the second box body 131 and the second box lid 132. Alternatively, the second accommodation box main body includes the first box body 111 and the second box body 131, and the second cover-mounted box lid includes the first box lid 112 and the second box lid 132; the second accommodation box main body and the second cover-mounted box lid collectively include the first housing 11 and the second housing 13; the first housing 11 includes the first box body 111 and the first box lid 112, and the second housing 13 includes the second box body 131 and the second box lid 132. Alternatively, the housing of the electrical control module (including the first accommodation box main body and the first cover-mounted box lid) and the housing of the relay module (including the second accommodation box main body and the second cover-mounted box lid) may have the same structure, and both include the first box body 111, the first box lid 112, the second box body 131, the second box lid 132; and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0096] In order to achieve a better fire-proof effect, flame retardant plastics can be used for plastic members.

[0097] In order to facilitate processing and manufacturing, the metal member may be a sheet metal member.

[0098] In some examples, the first housing 11 is a plastic member and the second housing 13 is a metal member in FIG. 6.

[0099] In the related art, a refrigerant used in the heat pump water heater is R290 (propane) refrigerant. As a natural gas, R290 refrigerant is more environmentally friendly, can effectively alleviate the greenhouse effect and reduce the harm caused to the atmosphere. However, R290 refrigerant is flammable and explosive refrigerant, and once ignition occurs, it may cause damage to the heat pump water heater. Therefore, for this type of heat pump water heater, the electrical control module also needs to have good fire-proof and explosion-proof performance.

[0100] By providing the first housing 11 as a plastic member and the second housing 13 as a metal member, not only the second housing 13 provided outside the first housing 11 can be used for fire-proof, but also the components can be protected and heat insulated by the first housing 11, thereby better improving the fire-proof and explosion-proof performance of the electrical control module.

[0101] In some examples, referring to FIGs. 6, and 8 to 11, an outer surface of the first housing 11 may be provided with a water-baffling enclosure 11b having a wire-passing port 11c, and the water-baffling enclosure 11b shields at least a part of the wire-passing structure 12. That is, the water-baffling enclosure 11b may shield only a part of the wire-passing structure 12, or may shield the entire wire-passing structure 12.

[0102] The wire-passing port 11c is a port through which the wire harness 20 passes, and the water-baffling enclosure 11b in FIG. 10 forms the wire-passing port 11c by opening a hole or a notch in the water-baffling enclosure 11b. In other examples, the water-baffling enclosure11b may be spaced apart from the first housing 11 such that the wire-passing port 11c is formed at the spacing.

[0103] The setting position of the wire-passing port 11c may be adjusted as required, and in some examples, referring to FIG. 10, when the electrical control module is in an operational state, the wire-passing port 11c may be located on a bottom side of the water-baffling enclosure 11b. The operational state refers to a state in which the electrical control module is mounted on an electrical apparatus such as heat pump water heater and can be used normally on the electrical apparatus.

[0104] The wire-passing port 11c is located on the bottom side of the water-baffling enclosure 11b, meaning that the wire harness 20 exits from the bottom side of the water-baffling enclosure 11b, so that water on the wire harness 20 can be effectively prevented from flowing along the wire harness 20 to the wire-passing structure 12.

[0105] By shielding at least a part of the structure of the wire-passing structure 12, the water-baffling enclosure 11b can function to block water for the wire-passing structure 12 to prevent water from flowing to the wire-passing structure 12 as much as possible, thereby further improving the waterproof effect.

[0106] In some examples, referring to FIGs. 12 to 14, the first sealing port 121a of the first sealing portion 121 and the second sealing port 122a of the second sealing portion 122 may extend from a first side of the wire-passing structure 12 to an opposite second side of the wire-passing structure 12, respectively. One end of the first sealing port 121a close to the second side penetrates the first sealing portion 121 to form a first wire-passing opening 121b, and one end of the second sealing port 122a close to the second side penetrates the second sealing portion 122 to form a second wire-passing opening 122b.

[0107] That is, the wire harness 20 can be clamped into the first sealing port 121a and the second sealing port 122a from the first wire-passing opening 121b and the second wire-passing opening 122b, whereby the wire harness 20 can extend through the first sealing port 121a and the second sealing port 122a. In addition, the first sealing port 121a and the second sealing port 122a respectively extend from the first side of the wire-passing structure 12 to the opposite second side of the wire-passing structure 12, or the first sealing port 121a and the second sealing port 122a may have a long dimension in an extension direction so as to accommodate the plurality of wire harnesses 20.

[0108] In some examples, referring to FIGs. 12 and 13, the first sealing portion 121 may be provided with a first guide groove 121c in communication with the first wire-passing opening 121b, a side of the first guide groove 121c facing away from the first wire-passing opening 121b is open to form a first opening mouth, and the first guide groove 121c gradually expands from the first wire-passing opening 121b to the first opening mouth. In the process of extending the wire, the wire harness 20 enters the first guide groove 121c from the first opening mouth, and then moves along the first guide groove 121c to the first wire-passing opening 121b. That is, the first guide groove 121c may function to guide the wire harness 20 to the first wire-passing opening 121b, thereby improving the convenience of the wire harness 20 being clamped into the first sealing port 121a from the first wire-passing opening 121b.

[0109] Referring to FIG. 12, the second sealing portion 122 may be provided with a second guide groove 122c in communication with the second wire-passing opening 122b, a side of the second guide groove 122c facing away from the second wire-passing opening 122b is open to form a second opening mouth, and the second guide groove 122c gradually expands from the second wire-passing opening 122b to the second opening mouth. In the process of extending the wire, the wire harness 20 enters the second guide groove 122c from the second opening mouth, and then moves along the second guide groove 122c to the second wire-passing opening 122b. The second guide groove 122c may function to guide the wire harness 20 to the second wire-passing opening 122b, thereby improving the convenience of the wire harness 20 being clamped into the second sealing port 122a from the second wire-passing opening 122b.

[0110] The wire-passing structure 12 in FIG. 12 is provided with the first guide groove 121c and the second guide groove 122c. In some other examples, the wire-passing structure 12 may be provided with only the first guide groove 121c without the second guide groove 122c. In some other examples, the wire-passing structure 12 may be provided with only the second guide groove 122c without the first guide groove 121c.

[0111] In some examples, referring to FIGs. 6 and 15, the mounting port 11a may be provided on the side wall of the first box body 111, and for the wire-passing structure 12 having the first guide groove 121c, the first opening mouth of the first guide groove 121c may face the first box lid 112. Continuing to refer to FIG. 15, an edge of the first box lid 112 may be provided with a protrusion 112a protruding toward the first box body 111, and the protrusion 112a extends into the first guide groove 121c and abuts against the first sealing portion 121.

[0112] Since the wire harness 20 clamped into the first sealing port 121a expands the first sealing port 121a, the protrusion 112a is provided on the first box lid 112 and extends into the first guide groove 121c to abut against the first sealing portion 121. This design not only can effectively prevent the first wire-passing opening 121b from opening under the action of the wire harness 20, which could affect the sealing effect, but also can function to close the first wire-passing opening 121b to prevent the wire harness 20 from escaping from the first wire-passing opening 121b.

[0113] In addition, it is noted that, since the second sealing portion 122 is arranged outside the first sealing portion 121 and the sealing effect is mainly provided by the first sealing portion 121, the sealing effect of the wire-passing structure 12 is substantially not affected even if the second wire-passing opening 122b is opened to some extent under the action of the wire harness 20. Further, the wire harness 20 is less likely to escape from the second wire-passing opening 122b after the protrusion 112a closes the first wire-passing opening 121b. Therefore, even if the second sealing portion 122 is provided with the second guide groove 122c, the protrusion 112a only needs to extend into the first guide groove 121c and abut against the first sealing portion 121, and does not need to extend into the second guide groove 122c and abut against the second sealing portion 122. It is clear that, in some examples, the protrusion 112a may extend into the second guide groove 122c and abut against the second sealing portion 122.

[0114] In some examples, referring to FIG. 13, a portion of a region of the first sealing portion 121 facing away from the second sealing portion 122 may protrude in a direction away from the second sealing portion 122 to form a convex rib 121d. The convex rib 121d encloses to form a first wire-passing groove 121e in communication with the first sealing port 121a and the first wire-passing opening 121b, respectively. That is, the wire harness 20 also extends through the first wire-passing groove 121e.

[0115] The convex rib 121d can improve the strength of the wire-passing structure 12 to better prevent the wire-passing structure 12 from being deformed.

[0116] In some examples, referring to FIGs. 13 and 15, a buckle 121f may also be provided on a side of the convex rib 121d facing away from the first wire-passing groove 121e, and the buckle 121f is snapped into the first housing 11. That is, the wire-passing structure 12 can be fixed at the mounting port 11a by being snapped into the first housing 11, and the convex rib 121d also provides a suitable position for providing the buckle 121f.

[0117] In some examples, referring to FIGs. 14 and 16, a portion of a region of the second sealing portion 122 close to the first sealing portion 121 may be recessed in a direction away from the first sealing portion 121 to form a second wire-passing groove 122d in communication with the first sealing port 121a, the second sealing port 122a, and the second wire-passing opening 122b, respectively.

[0118] The second wire-passing groove 122d corresponds to a transition space between the first sealing portion 121 and the second sealing portion 122, and the wire harness 20 also extends through the second wire-passing groove 122d. The second wire-passing groove 122d may function to separate the first sealing port 121a from the second sealing port 122a, so as to better prevent water flow permeating into the second sealing port 122a from directly flowing into the first sealing port 121a.

[0119] In some examples, referring to FIGs. 14 and 16, on a side of the second wire-passing groove 122d opposite to the second wire-passing opening 122b, there is a groove opening 122e in communication with the interior of the second wire-passing groove 122d. A side of the second sealing portion 122 having the groove opening 122e is sealingly fitted with the first housing 11 to close the groove opening 122e.

[0120] In some examples, when the wire-passing structure 12 is produced by certain processing methods, for example, since such processing method is adopted, when the wire-passing structure 12 is formed through injection molding, the groove opening 122e is inevitably formed on the second wire-passing groove 122d due to mold ejection, and the groove opening 122e will have a certain influence on the sealing performance of the wire-passing structure 12. Therefore, the side of the second sealing portion 122 having the groove opening 122e can be sealingly fitted with the first housing 11, for example, the side of the second sealing portion 122 having the groove opening 122e can be in sealing contact with the first housing 11 to close the groove opening 122e.

[0121] In some examples, referring to FIG. 16, for the wire-passing structure 12 having the water-baffling enclosure 11b, the side of the second sealing portion 122 having the groove opening 122e may be located in and sealingly fitted with the water-baffling enclosure 11b.

[0122] In some examples, referring to FIGs. 12 and 14, the second sealing port 122a may penetrate the side of the second sealing portion 122 having the groove opening 122e, meaning that an end of the second sealing port 122a opposite to the second wire-passing opening 122b may be an opening end. In some examples, the second sealing portion 122 may be provided with at least one cutting slit 122f that intersects with the second sealing port 122a.

[0123] The second sealing portion 122 in FIGs. 12 and 14 is provided with two cutting slits 122f, and in some other examples, the second sealing portion 122 may be provided with one cutting slit 122f or two or more cutting slits 122f.

[0124] The second sealing port 122a penetrates the side of the second sealing portion 122 having the groove opening 122e in order to facilitate processing and manufacturing. However, since the wire harness 20 clamped into the second sealing port 122a will expand the second sealing port 122a, by providing the cutting slit 122f intersecting the second sealing port 122a, it is possible to better prevent the wire harness 20 from excessively expanding an end of the second sealing port 122a opposite to the second wire-passing opening 122b, which could otherwise affect the sealing performance.

[0125] It can be understood that, on the premise of satisfying processing requirements, the second sealing port 122a may not penetrate the side of the second sealing portion 122 having the groove opening 122e, and in the same way, the side of the second passing groove 122d opposite to the second wire-passing opening 122b may not be provided with the groove opening 122e.

[0126] In some examples, referring to FIGs. 8 to 11, the water-baffling enclosure 11b may be provided with a first wall 11b1 and a second wall 11b2 defining a water-baffling groove 11e having an avoidance port 11d and a wire-passing port 11c. The first wall 11b1 and the avoidance port 11d are respectively located on opposite sides of the second wall 11b2 in a first direction. At least the first side of the wire-passing structure 12 is located in the water-baffling groove 11e and faces the first wall 11b1. That is, the first wire-passing opening 121b and the second wire-passing opening 122b are located on a side of the water-baffling groove 11e provided with the avoidance port 11d, and the avoidance port 11d is configured to avoid the wire harness 20 when the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a.

[0127] In FIG. 8, two wire-passing structures 12 are provided in the water-baffling groove 11e, and in other examples, one wire-passing structure 12 may be provided in the water-baffling groove 11e, or two or more wire-passing structures 12 may be provided in the water-baffling groove 11e.

[0128] In addition, when the electrical control module is in the operational state, an outer surface of the first wall 11b1 can be used as a water-facing surface, that is, water flow such as rainwater mainly flushes the outer surface of the first wall 11b1. Therefore, the water-baffling enclosure 11b can exhibit a good water-baffling effect.

[0129] Continuing to refer to FIGs. 8 and 10, the wire-passing port 11c may be located on a side of the second wall 11b2 along a second direction, and the wire-passing port 11c is located on a bottom side of the second wall 11b2 when the electrical control module is in the operational state. The second direction intersects the first direction.

[0130] The second direction in FIG. 10 is orthogonal to (i.e., perpendicularly intersects) the first direction in FIG. 11, and in other examples, the second direction obliquely intersects the first direction.

[0131] Referring to FIG. 10, in order to better prevent the water flow from flowing back to the second sealing port 122a along the wire harness 20, a shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in a height direction may be greater than or equal to 10 mm.

[0132] The height direction described herein refers to a height direction of the electrical control module in the operational state. When at least two wire-passing structures 12 are provided in the water-baffling groove 11e, the shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in the height direction is a distance between the second sealing port 122a on the wire-passing structure 12 closest to the wire-passing port 11c and the wire-passing port 11c in the height direction, as shown in FIG. 10. When only one wire-passing structure 12 is provided in the water-baffling groove 11e, the shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in the height direction is a distance between the second sealing port 122a on the wire-passing structure 12 and the wire-passing port 11c in the height direction.

[0133] Referring to FIG. 11, in order to achieve a better water-baffling effect, a dimension L2 of the second wall 11b2 in the first direction may be greater than or equal to 15 mm.

[0134] In some examples, referring to FIGs. 6, 17, and 18, the electrical control module may be provided with a capacitor 14 and a sealing sleeve 15. The first box body 111 is provided with a mounting tube 111a, a first end of the mounting tube 111a protrudes from the outer surface of the first box body 111, the capacitor 14 extends through the mounting tube, and the sealing sleeve 15 is sealingly sleeved at the first end of the mounting tube 111a to close the first end.

[0135] The sealing sleeve 15 can not only protect the capacitor 14, but also prevent water vapor from entering the interior of the electrical control module.

[0136] In some examples, referring to FIG. 17, the sealing sleeve 15 may be provided with a vent hole 14a. When mounting the sealing sleeve 15, the vent hole 14a may be used for venting, so as to facilitate the mounting of the sealing sleeve 15.

[0137] Referring to FIG. 17, for the electrical control module provided with the second housing 13, the second box body 131 may be provided with a through hole 131a, and the mounting tube 111a extends through the through hole 131a. The first box body 111 may be fitted against a part of the second box body 131 located on a peripheral side of the through hole 131a to prevent water vapor from entering the internal of the electrical control module from a junction between the through hole 131a and the mounting tube 111a as much as possible.

[0138] In some examples, referring to FIGs. 17 and 18, the first box body 111 and the second box body 131 may be spaced apart in a partial region to form a spacing space 131b, a plurality of reinforcing ribs 111b may be provided on a side of the first box body 111 close to the second box body 131, and the reinforcing ribs 111b are located in the spacing space 131b. The reinforcing ribs 111b are mainly used to reinforce the first box body 111 to improve the strength of the first box body 111.

[0139] In some examples, referring to FIG. 17, when the electrical control module is in the operational state, at least one reinforcing rib 111b is located on a lower side of the mounting tube 111a. The reinforcing rib 111b located on the lower side of the mounting tube 111a is spaced apart from the second box body 131, so that a drainage gap 111c is formed at the spacing.

[0140] When water vapor permeates into the junction between the through hole 131a and the mounting tube 111a, the water flow formed by the accumulation of water vapor flows into the spacing space 131b on the lower side of the mounting tube 111a, and the reinforcing rib 111b located on the lower side of the mounting tube 111a is spaced apart from the second box body 131. In this way, the water flow flowing into the spacing space 131b can be discharged from the drainage gap 111c to avoid the accumulation of water flow at the reinforcing rib 111b as much as possible.

[0141] A heat pump water heater (not shown in the figure) according to an embodiment of the present disclosure includes the head assembly described in any of the above embodiments.

[0142] The heat pump water heater has all the advantages of the head assembly provided in any of the above embodiments, which will not be repeatedly described herein.

[0143] In summary, according to the technical solution provided by an embodiment of the present disclosure, the relay module is independent of the electrical control module, so that a height of the electrical control module can be made less compared to a height of the electrical control box in the related art, and a height of the relay module can also be made less compared to the height of the electrical control box in the related art. Further, the relay module and the electrical control module are spaced apart in the circumferential direction of the housing, therefore, the height of the housing is not required to be increased. In addition, a heat generation of the electrical control module is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module in the high-temperature environment is lower, and the temperature inside the relay module in the high-temperature environment is also lower. Therefore, the relay module and the electrical control module have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0144] In the description of the present disclosure, it is to be understood that orientation or positional relationships indicated by terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on those shown in the drawings and are intended only for ease of description of the present application and simplification of the description, and are not intended to indicate or imply that the device or element referred must have a particular orientation, or is constructed and operated in a particular orientation and therefore cannot be construed as limitations on the present application.

[0145] Furthermore, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, the features defined by "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "multiple / a plurality of" means at least two, e.g. two, three, etc., unless expressly specified otherwise.

[0146] In the present application, unless otherwise expressly specified and limited, terms "mounted", "connected", "connection", "fixed" and the like are understood in a broad sense. It may be, for example, a fixed connection, a detachable connection, or an integrated structure. It may be a mechanical connection or an electrical connection, may be a direct connection or an indirect connection through an intermediate medium, or may be an internal connection between two elements or an interactive relationship between two elements, unless otherwise expressly defined. For those of ordinary skills in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0147] In the present application, the first feature being "above" or "below" the second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature via an intermediate medium, unless otherwise expressly specified and defined. Moreover, the first feature being "above", "on" and "over" the second feature may be the first feature being directly above or obliquely above the second feature, or simply indicate that a horizontal height of the first feature is greater than that of the second feature. The first feature being "below", "under" and "underneath" the second feature may be the first feature being directly below or obliquely below the second feature, or simply mean that the horizontal height of the first feature is less than that of the second feature.

[0148] In the description of this specification, descriptions with reference to terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like mean that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic description of the above terms needs not be directed to the same embodiments or examples. Further, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, one skilled in the art may combine and integrate different embodiments or examples described in this specification and features of different embodiments or examples if there is no conflict.

[0149] Although implementations disclosed herein are described above, the described contents are only implementations used for facilitating understanding of the present application, and are not intended to limit the present application. It should be noted that the above-described embodiments or implementations are merely exemplary and not limiting. Accordingly, the present disclosure is not limited to what is specifically shown and described herein. Various modifications, substitutions, or omissions may be made to the forms and details of the embodiments without departing from the scope of the present disclosure.

Examples

Embodiment Construction

[0040]A clear and complete description of the technical solutions of the embodiments of the present application will be given below with reference to the accompanying drawings in the embodiments of the present application, and it will be apparent that the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained without creative effort by those of ordinary skills in the art fall within the scope of protection of the present application.

[0041]The present application provides a head assembly that exhibits better operating performance in high-temperature environments.

[0042]The present application also provides a heat pump water heater.

[0043]As shown in FIGs. 1 to 3, a head assembly for a heat pump water heater provided by an embodiment of the present disclosure includes: a housing 100; an electrical control module 200 arranged in the housing 100; and a relay mod...

[0001] This application claims priority of a Chinese patent application filed to CNPIA on August 31, 2023 with application number 2023111228985 and entitled "Heat Pump Water Heater and Head Assembly Thereof", and a Chinese patent application filed to CNIPA on August 31, 2023 with application number 202322371628X and entitled "Heat Pump Water Heater and Head Assembly Thereof", and a Chinese patent application filed to CNIPA on August 31, 2023 with application number 2023111200072 and entitled "Electrical Control Box, Wire-passing Structure and Heat Pump Water Heater", the contents of which should be understood to be incorporated herein by reference.Technical Field

[0002] The present application relates to, but is not limited to, the technical field of household appliances, and specifically relates to a heat pump water heater and a head assembly thereof.Background

[0003] A head assembly of the related heat pump water heater includes a housing, an electrical control box, a wiring module and a DR (Demand Respond) module, and etc. The electrical control box is upright mounted in the housing, the DR module is mounted on a top wall of the housing and protrudes upward relative to the top wall of the housing, and a side wall of the housing is provided with an access port for inspecting and maintaining the electrical control box. The electrical control box includes a box main body, a box lid, an electrical control main board and a relay main board. An opening of the housing faces the access port. The electrical control main board and the relay main board are both arranged in the box main body and are upright arranged in an up-down direction in sequence. The box lid covers and is mounted on the box main body. Improving the operating performance of heat pump water heaters in high-temperature environments is a technical challenge that those skilled in the art have been continuously dedicated to addressing.Summary

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the protection scope of the claims.

[0005] A head assembly for a heat pump water heater according to an embodiment of the present disclosure includes: a housing; an electrical control module arranged in the housing; and a relay module arranged in the housing and spaced apart from the electrical control module in a circumferential direction of the housing.

[0006] In some exemplary embodiments, the head assembly further includes a wiring module located outside the relay module in a radial direction of the housing and arranged on a side wall of the housing.

[0007] In some exemplary embodiments, the wiring module includes a junction box. The side wall of the housing is provided with a first mounting port, and the junction box is fixedly connected at the first mounting port from outside to inside along the radial direction of the housing.

[0008] In some exemplary embodiments, the relay module includes: a first accommodation box main body arranged in the housing, an opening of the first accommodation box main body facing the first mounting port; a relay main board arranged in the first accommodation box main body; and a first cover-mounted box lid fixedly connected to the first accommodation box main body from outside to inside along the radial direction of the housing.

[0009] In some exemplary embodiments, a size of the first mounting port is not less than a size of the first cover-mounted box lid.

[0010] In some exemplary embodiments, the head assembly further includes a display module located outside the electrical control module in a radial direction of the housing and arranged on a side wall of the housing.

[0011] In some exemplary embodiments, the display module includes a display panel. The side wall of the housing is provided with a second mounting port, and the display panel is fixedly connected at the second mounting port from outside to inside along the radial direction of the housing.

[0012] In some exemplary embodiments, the electrical control module includes: a second accommodation box main body arranged in the housing, an opening of the second accommodation box main body facing the second mounting port; an electrical control main board arranged in the second accommodation box main body; and a second cover-mounted box lid fixedly connected to the second accommodation box main body from outside to inside along the radial direction of the housing.

[0013] In some exemplary embodiments, a size of the second mounting port is not less than a size of the second cover-mounted box lid.

[0014] In some exemplary embodiments, the head assembly further includes a DR module arranged on a side surface of the wiring module facing away from the relay module, and a size of the DR module is not larger than a size of the wiring module.

[0015] In some exemplary embodiments, a center angle formed by a projection of a center of the electrical control module and a center of the relay module on a bottom wall of the housing and a center of the bottom wall of the housing is no greater than 90 degrees.

[0016] In some exemplary embodiments, the electrical control module or the relay module includes: a first housing having a mounting port, the first housing including a first box body and a first box lid covering the first box body; a wire-passing structure arranged at the mounting port, the wire-passing structure including a first sealing portion having a first sealing port and a second sealing portion having a second sealing port. Both the first sealing port and the second sealing port are recoverably expanded, the second sealing portion is arranged outside the first sealing portion, and the first sealing port is in communication with the second sealing port.

[0017] In some exemplary embodiments, an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, and the water-baffling enclosure shields at least a part of the wire-passing structure.

[0018] In some exemplary embodiments, the first sealing port and the second sealing port respectively extend from a first side of the wire-passing structure to a second side opposite to the first side. One end of the first sealing port close to the second side penetrates the first sealing portion to form a first wire-passing opening, and one end of the second sealing port close to the second side penetrates the second sealing portion to form a second wire-passing opening.

[0019] In some exemplary embodiments, the first sealing portion further has a first guide groove in communication with the first wire-passing opening, a side of the first guide groove facing away from the first wire-passing opening is open to form a first opening mouth, and the first guide groove gradually expands from the first wire-passing opening to the first opening mouth.

[0020] In some exemplary embodiments, the second sealing portion further has a second guide groove in communication with the second wire-passing opening, a side of the second guide groove facing away from the second wire-passing opening is open to form a second opening mouth, and the second guide groove gradually expands from the second wire-passing opening to the second opening mouth.

[0021] In some exemplary embodiments, the mounting port is arranged on a side wall of the first box body, the first opening mouth faces the first box lid, an edge of the first box lid has a protrusion protruding toward the first box body, and the protrusion extends into the first guide groove and abuts against the first sealing portion.

[0022] In some exemplary embodiments, a portion of a region of the first sealing portion facing away from the second sealing portion protrudes in a direction away from the second sealing portion to form a convex rib, and the convex rib encloses to form a first wire-passing groove in communication with the first sealing port and the first wire-passing opening, respectively.

[0023] In some exemplary embodiments, a buckle is provided on a side of the convex rib facing away from the first wire-passing groove, and the buckle is snapped into the first housing.

[0024] In some exemplary embodiments, a portion of a region of the second sealing portion close to the first sealing portion is recessed in a direction away from the first sealing portion to form a second wire-passing groove in communication with the first sealing port, the second sealing port, and the second wire-passing opening, respectively.

[0025] In some exemplary embodiments, a groove opening in communication with the second wire-passing groove is provided on a side of the second wire-passing groove opposite to the second wire-passing opening, and a side of the second sealing portion having the groove opening is sealingly fitted with the first housing to close the groove opening.

[0026] In some exemplary embodiments, an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, the water-baffling enclosure shields at least a part of the wire-passing structure, and a side of the second sealing portion having the groove opening is located in the water-baffling enclosure and sealingly fitted with the water-baffling enclosure.

[0027] In some exemplary embodiments, the second sealing port penetrates a side of the second sealing portion having the groove opening, and the second sealing portion further has at least one cutting slit that intersects the second sealing port.

[0028] In some exemplary embodiments, the water-baffling enclosure includes a first wall and a second wall, and the first wall and the second wall define a water-baffling groove having an avoidance port and the wire-passing port. The first wall and the avoidance port are respectively located on opposite sides of the second wall in a first direction. At least the first side of the wire-passing structure is located in the water-baffling groove and faces the first wall.

[0029] In some exemplary embodiments, the wire-passing port is located on a side of the second wall along a second direction. The wire-passing port is located on a bottom side of the second wall when the head assembly is in an operational state. The second direction intersects the first direction.

[0030] In some exemplary embodiments, one of the first box body and the first box lid has a sealing groove, and the other of the first box body and the first box lid is inserted into the sealing groove so that the first box body is sealingly fitted with the first box lid.

[0031] In some exemplary embodiments, the head assembly further includes a second housing, and the second housing includes a second box body arranged outside the first box body and a second box lid arranged outside the first box lid.

[0032] In some exemplary embodiments, the head assembly includes a capacitor and a sealing sleeve, and the first box body is provided with a mounting tube. A first end of the mounting tube protrudes from an outer surface of the first box body, the capacitor extends through the mounting tube, and the sealing sleeve is sealingly sleeved at the first end of the mounting tube to close the first end.

[0033] In some exemplary embodiments, the head assembly further includes a second housing, the second housing includes a second box body arranged outside the first box body and having a through hole, the mounting tube extends through the through hole, and the first box body is fitted against a part of the second box body located on a peripheral side of the through hole.

[0034] In some exemplary embodiments, the first box body and the second box body are spaced apart in a partial region to form a spacing space, and a plurality of reinforcing ribs located in the spacing space are provided on a side of the first box body close to the second box body. When the head assembly is in an operational state, at least one of the reinforcing ribs is located on a lower side of the mounting tube, and the reinforcing rib located on the lower side of the mounting tube is spaced apart from the second box body, so that a drainage gap is formed at the spacing.

[0035] A heat pump water heater according to an embodiment of the present disclosure includes the head assembly described in any one of the above embodiments.

[0036] According to the technical solution provided by an embodiment of the present disclosure, the relay module is independent of the electrical control module, so that a height of the electrical control module can be made less compared to a height of the electrical control box in the related art, and a height of the relay module can also be made less compared to the height of the electrical control box in the related art. Further, the relay module and the electrical control module are spaced apart in the circumferential direction of the housing, therefore, the height of the housing is not required to be increased. In addition, a heat generation of the electrical control module is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module in the high-temperature environment is lower, and the temperature inside the relay module in the high-temperature environment is also lower. Therefore, the relay module and the electrical control module have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0037] Other aspects will become apparent after reading and understanding the drawings and detailed description.Brief Description of Drawings

[0038] FIG. 1 is a schematic front view of a structure of a head assembly provided by some embodiments of the present application; FIG. 2 is a schematic top view of a cross-sectional structure of the head assembly shown in FIG. 1; FIG. 3 is a schematic exploded view of a structure of the head assembly shown in FIG. 1; FIG. 4 is a schematic view of a structure of a head assembly of a heat pump water heater according to an embodiment of the present application; FIG. 5 is a schematic view of an internal structure of the head assembly shown in FIG. 4, in which an electrical control module is in an operational state; FIG. 6 is an exploded view of the electrical control module shown in FIG. 5; FIG. 7 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 8 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 9 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 10 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5, in which a wire harness is shown; FIG. 11 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 12 is a schematic structural view of a wire-passing structure shown in FIG. 6 from one perspective; FIG. 13 is a schematic structural view of the wire-passing structure shown in FIG. 12 from another perspective; FIG. 14 is a schematic structural view of the wire-passing structure shown in FIG. 12 from yet another perspective; FIG. 15 is a schematic view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 16 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; FIG. 17 is a cross-sectional view of a portion of a structure of the electrical control module shown in FIG. 5; and FIG. 18 is a schematic view of a portion of a structure of a first box body shown in FIG. 5.

[0039] In the drawings, components represented by reference signs are listed as follows: 100 housing, 110 first mounting port, 120 second mounting port, 200 electrical control module, 210 second accommodation box main body, 220 electrical control main board, 230 second cover-mounted box lid, 300 relay module, 310 first accommodation box main body, 320 relay main board, 330 first cover-mounted box lid, 400 wiring module, 500 display module, 600 DR module; 1000 head assembly, 11 first housing, 11a mounting port, 11b water-baffling enclosure, 11b1 first wall, 11b2 second wall, 11c wire-passing port, 11d avoidance port, 11e water-baffling groove, 111 first box body, 111a mounting tube, 111b reinforcing rib, 111c drainage gap, 112 first box lid, 112a protrusion, 112b sealing groove, 12 wire-passing structure, 121 first sealing portion, 121a first sealing port, 121b first wire-passing opening, 121c first guide groove, 121d convex rib, 121e first wire-passing groove, 121f buckle, 122 second sealing portion, 122a second sealing port, 122b second wire-passing opening, 122c second guide groove, 122d second wire-passing groove, 122e groove opening, 122f cutting slit, 13 second housing, 131 second box body, 131a through hole, 131b spacing space, 132 second box lid, 14 capacitor, 14a vent hole, 15 sealing sleeve, 20 wire harness. Detailed Description

[0040] A clear and complete description of the technical solutions of the embodiments of the present application will be given below with reference to the accompanying drawings in the embodiments of the present application, and it will be apparent that the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained without creative effort by those of ordinary skills in the art fall within the scope of protection of the present application.

[0041] The present application provides a head assembly that exhibits better operating performance in high-temperature environments.

[0042] The present application also provides a heat pump water heater.

[0043] As shown in FIGs. 1 to 3, a head assembly for a heat pump water heater provided by an embodiment of the present disclosure includes: a housing 100; an electrical control module 200 arranged in the housing 100; and a relay module 300 arranged in the housing 100 and spaced apart from the electrical control module 200 in a circumferential direction of the housing 100.

[0044] The relay module 300 is independent of the electrical control module 200, so that a height of the electrical control module 200 can be made less than a height of the electrical control box in the related art, and a height of the relay module 300 can also be made less than the height of the electrical control box in the related art. Further, the relay module 300 and the electrical control module 200 are spaced apart in a circumferential direction of the housing 100. Therefore, the height of the housing 100 is not required to be increased. In addition, a heat generation of the electrical control module 200 is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module 300 is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module 200 in the high-temperature environment is lower, and the temperature inside the relay module 300 in the high-temperature environment is also lower. Therefore, the relay module 300 and the electrical control module 200 have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0045] In some exemplary embodiments, the head assembly further includes a wiring module 400 located outside the relay module 300 in a radial direction of the housing 100 and provided on a side wall of the housing 100, and the wiring module 400 is configured to be electrically connected to a mains power supply. The wiring module 400 is located outside the relay module 300 in the radial direction of the housing 100, which facilitates wiring between the wiring module 400 and the relay module 300.

[0046] In some examples, as shown in FIGs. 1 to 3, the wiring module 400 includes a junction box. The side wall of the housing 100 is provided with a first mounting port 110, and the junction box is fixedly connected at the first mounting port 110 from outside to inside along the radial direction of the housing 100.

[0047] The side wall of the housing 100 is provided with the first mounting port 110, and the junction box is fixedly connected at the first mounting port 110 from outside to inside along the radial direction of the housing 100. The relay module 300 can be inspected and maintained from the first mounting port 110 by disassembling the junction box from the housing 100 outside the housing 100. In this technical scheme, the process of inspecting and maintaining the relay module 300 is more convenient, and there is no need to specially provide an access port for inspecting and maintaining the relay module 300 on the housing 100, so that the aesthetic and integrity of the head assembly can be improved.

[0048] A port wall of the first mounting port 110 may be provided with a buckle position, the junction box may be provided with a buckle, and the buckle is snapped on the buckle position from outside to inside along the radial direction of the housing 100, so that the junction box is fixedly connected to the port wall of the first mounting port 110. Alternatively, the port wall of the first mounting port 110 may be provided with a screw hole, the junction box is provided with a through hole, and a screw is screwed in the screw hole through the through hole from outside to inside along the radial direction of the housing 100, so that the junction box is fixedly connected to the port wall of the first mounting port 110, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0049] In some examples, as shown in FIGs. 2 and 3, the relay module 300 includes: a first accommodation box main body 310, the first accommodation box main body 310 being upright arranged in the housing 100, an opening of the first accommodation box main body 310 facing the first mounting port 110; a relay main board 320 arranged in the first accommodation box main body 310 and arranged along an up-down direction; and a first cover-mounted box lid 330 fixedly connected to the first accommodation box main body 310 from outside to inside along the radial direction of the housing 100.

[0050] By disassembling the junction box outside the housing 100, and then disassembling the first cover-mounted box lid 330 from the first mounting port 110, the relay main board 320 can be inspected and maintained from the first mounting port 110. The inspection and maintenance process of the relay main board 320 (i.e., the process of point inspecting the relay main board 320) in this technical scheme is more convenient.

[0051] In some examples, as shown in FIG. 3, a size (including length and width) of the first mounting port 110 is not less than a size (including length and width) of the first cover-mounted box lid 330. This facilitates disassembling the first cover-mounted box lid 330 from the first mounting port 110, and can also realize that the first cover-mounted box lid 330 is taken out from the first mounting port 110 and mounted into the first mounting port 110. It is more beneficial for the inspecting and maintaining the relay main board 320 after the first cover-mounted box lid 330 is taken out from the first mounting port 110. In this technical scheme, the inspection and maintenance process of the relay main board 320 is more convenient.

[0052] In some exemplary embodiments, as shown in FIGs. 1 to 3, the head assembly further includes a display module 500 located outside the electrical control module 200 in the radial direction of the housing 100 and arranged on the side wall of the housing 100 to facilitate wiring between the display module 500 and the electrical control module 200.

[0053] In some examples, as shown in FIGs. 1 to 3, the display module 500 includes a display panel, and the side wall of the housing 100 is provided with a second mounting port 120. The display panel is fixedly connected at the second mounting port 120 from outside to inside along the radial direction of the housing 100.

[0054] The side wall of the housing 100 is provided with the second mounting port 120, and the display panel is fixedly connected to the second mounting port 120 from outside to inside along the radial direction of the housing 100. The electrical control module 200 can be inspected and maintained from the second mounting port 120 by disassembling the display panel outside the housing 100. In this technical scheme, the inspection and maintenance process of the electrical control module 200 is simpler, and there is no need to specially provide an access port for inspecting and maintaining the electrical control module 200 on the housing 100, so that the aesthetic and integrity of the head assembly can be improved.

[0055] In some examples, the port wall of the second mounting port 120 is provided with a buckle position, the display panel is provided with a buckle, and the buckle is snapped on the buckle position from outside to inside along the radial direction of the housing 100, so that the display panel is fixedly connected to the port wall of the second mounting port 120. In this technical scheme, a side surface of the display panel facing away from the electrical control module 200 is smoother and more aesthetic.

[0056] In some examples, as shown in FIGs. 2 and 3, the electrical control module 200 includes: a second accommodation box main body 210, the second accommodation box main body 210 being upright arranged in the housing 100, and an opening of the second accommodation box main body 210 facing the second mounting port 120; an electrical control main board 220 arranged in the second accommodation box main body 210 and arranged in the up-down direction; and a second cover-mounted box lid 230 fixedly connected to the second accommodation box main body 210 from outside to inside along the radial direction of the housing 100.

[0057] The display panel is disassembled outside the housing 100, and then the second cover-mounted box lid 230 is disassembled from the second mounting port 120, so that the electrical control main board 220 can be inspected and maintained from the second mounting port 120. In this technical scheme, the inspection and maintenance process of the electrical control main board 220 (i.e., the process of point inspecting the electrical control main board 220) is simpler.

[0058] In some examples, as shown in FIG. 3, a size (including length and width) of the second mounting port 120 is not less than a size (including length and width) of the second cover-mounted box lid 230. This facilitates disassembling the second cover-mounted box lid 230 from the second mounting port 120, and can also realize that the second cover-mounted box lid 230 is taken out from the second mounting port 120 and mounted into the second mounting port 120. It is more beneficial for the inspecting and maintaining the electrical control main board 220 after the second cover-mounted box lid 230 is taken out from the second mounting port 120. In this technical scheme, the inspection and maintenance process of the electrical control main board 220 is more convenient.

[0059] In some exemplary embodiments, as shown in FIGs. 1 to 3, the head assembly further includes a DR module 600, and the DR module 600 is arranged on a side surface of the wiring module 400 facing away from the relay module 300. This is more conducive to the wiring between the DR module 600 and the relay module 300, and can also reduce the overall height of the head assembly, and the height of the corresponding heat pump water heater is less. The DR module 600 is convex to the outside of the housing 100 with respect to the side wall of the housing 100, which facilitates inspection and maintenance of the DR module 600.

[0060] In some examples, as shown in FIGs. 1 to 3, a size (including length and width) of the DR module 600 is not greater than a size (including length and width) of the wiring module 400, which facilitates quick mounting of the DR module 600 on the wiring module 400.

[0061] The wiring module 400 may be provided with a buckle position, the DR module 600 may be provided with a buckle, and the buckle is snapped on the buckle position, so that the DR module 600 is fixedly connected to the side surface of the wiring module 400 facing away from the relay module 300. Alternatively, the wiring module 400 may be provided with a screw hole, the DR module 600 may be provided with a through hole, and a screw is screwed in the screw hole through the through hole, so that the DR module 600 is fixedly connected to the side surface of the wiring module 400 facing away from the relay module 300, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0062] In some exemplary embodiments, as shown in FIG. 2, a center angle formed by a projection of a center (i.e., a geometric center) of the electrical control module 200 and a center (i.e., a geometric center) of the relay module 300 on a bottom wall of the housing 100 and a center (i.e., a geometric center) of the bottom wall of the housing 100 is not more than 90 degrees. This facilitates the smooth wiring of the electrical control module 200, the display module 500, the relay module 300, the wiring module 400 and the DR module 600, and the DR module 600 will not interfere with the wall when the heat pump water heater is mounted on the wall.

[0063] An electrical control box provided by a related art has a height of 342 mm. After designed into the electrical control module 200 and the relay module 300 of the present application, the height of the electrical control module 200 is 312 mm (the height of the relay module 300 is less than the height of the electrical control module 200), which is beneficial to reducing the height of the housing 100. Moreover, a maximum temperature inside the electrical control module 200 and a maximum temperature inside the relay module 300 are both less than the maximum temperature inside the electrical control box in the related art, so the electrical control module 200 and the relay module 300 have better operating performance and longer service life.

[0064] An electrical control box provided by another related art has a height of 456 mm. After designed into the electrical control module 200 and the relay module 300 of the present application, the height of the electrical control module 200 is 426 mm (the height of the relay module 300 is less than the height of the electrical control module 200), which is beneficial to reducing the height of the housing 100. Moreover, a maximum temperature inside the electrical control module 200 and a maximum temperature inside the relay module 300 are both less than the maximum temperature inside the electrical control box in the related art, so the electrical control module 200 and the relay module 300 have better operating performance and longer service life.

[0065] In some exemplary embodiments, referring to FIGs. 5, 6, and 8, the electrical control module includes a first housing 11 and a wire-passing structure 12.

[0066] The first housing 11 includes a first box body 111 and a first box lid 112 covering the first box body 111, and the first housing 11 further includes a mounting port 11a.

[0067] In order to achieve a better sealing effect, the first box lid 112 and the first box body 111 are generally required to be sealingly fitted. For example, the first box lid 112 and the first box body 111 may be directly sealed and in contact with each other, and a sealing member such as a sealing ring may be provided between the first box lid 112 and the first box body 111.

[0068] The first accommodation box main body includes a first box body 111, and the first cover-mounted box lid includes a first box lid 112. Alternatively, the second accommodation box main body may include the first box body 111, and the second cover-mounted box lid may include the first box lid 112, and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0069] In some examples, referring to FIG. 7, the first box lid 112 may be provided with a sealing groove 112b. The first box body 111 is inserted into the sealing groove 112b, so that the first box body 111 and the first box lid 112 are sealingly fitted.

[0070] In FIG. 7, a part of the first box body 111 that is inserted into the sealing groove 112b is in sealing contact with a groove wall of the sealing groove 112b to achieve sealing fitting. In other examples, a sealing member such as a sealing ring may be provided in the sealing groove 112b, and the first box body 111 may abut against the sealing member to achieve sealing fitting between the first box body 111 and the first box lid 112.

[0071] In another example, the first box body 111 may be provided with the sealing groove 112b, and the first box lid 112 may be inserted into the sealing groove 112b.

[0072] The mounting port 11a in FIG. 6 is provided on the first box body 111. In other examples, the mounting port 11a may be provided on the first box lid 112, or the mounting ports 11a may be provided on the first box body 111 and the first box lid 112, respectively.

[0073] The number of mounting ports 11a may be one or a plurality.

[0074] The wire-passing structure 12 is arranged at the mounting port 11a. It can be understood that when the number of the mounting ports 11a is a plurality, each mounting port 11a is respectively provided with the wire-passing structure 12.

[0075] Referring to FIGs. 12 to 14, the wire-passing structure 12 includes a first sealing portion 121 having a first sealing port 121a and a second sealing portion 122 having a second sealing port 122a. Both the first sealing port 121a and the second sealing port 122a can be recoverably expanded. The second sealing portion 122 is arranged outside of the first sealing portion 121, and the first sealing port 121a is in communication with the second sealing port 122a.

[0076] An electrical control main board 220 is mounted in the first housing 11, the electrical control main board 220 has components, and the wire-passing structure 12 is configured for a wire harness 20 electrically connected to the components (i.e., the electrical control board 220) to pass therethrough.

[0077] In some examples, the first sealing port 121a is in communication with an internal space of the first housing 11, the second sealing port 122a is in communication with the outside of the first housing 11, and the wire harness 20 extends through the first sealing port 121a and the second sealing port 122a.

[0078] The wire-passing structure 12 may be an integrally formed structure. For example, the wire-passing structure 12 may be integrally formed by injection molding. Alternatively, the wire-passing structure 12 may be assembled from the first sealing portion 121 and the second sealing portion 122 which are separated from each other. For example, the first sealing portion 121 and the second sealing portion 122 may be assembled to form the wire-passing structure 12 by adhesive bonding.

[0079] The wire-passing structure 12 may be provided with only one first sealing portion 121 and only one second sealing portion 122. Alternatively, the wire-passing structures 12 may be provided with a plurality of first sealing portions 121 and a plurality of sealing portions 122, and the first sealing portions 121 and the second sealing portions 122 are provided in one-to-one correspondence. For example, in FIG. 6, a part of the wire-passing structures 12 is provided with only one first sealing portion 121 and only one second sealing portion 122, a part of the wire-passing structures 12 is provided with two first sealing portions 121 and two second sealing portions 122, and the two first sealing portions 121 and the two sealing portions 122 are provided in one-to-one correspondence.

[0080] Both the first sealing port 121a and the second sealing port 122a can be recoverably expanded, meaning that the wire harness 20 extends through the first sealing port 121a and the second sealing port 122a by expanding the first sealing port 121a and the second sealing port 122a, and the first sealing port 121a and the second sealing port 122a can be restored to the original state when the wire harness 20 is taken out from the first sealing port 121a and the second sealing port 122a.

[0081] In order to facilitate the recoverable expansion of the first sealing port 121a and the second sealing port 122a, in some examples, the wire-passing structure 12 may be made of a material capable of generating certain elastic deformation, such as rubber, plastic, or the like.

[0082] A width dimension of the first sealing port 121a should be less than a diameter of the clamped-in wire harness 20. In some examples, referring to FIG. 13, the first sealing port 121a may have a slit shape.

[0083] Referring to FIG. 13, in order to ensure that the first sealing port 121a can have a good sealing effect, the width dimension D1 of the first sealing port 121a may be greater than or equal to 0.3 mm and less than or equal to 0.8 mm. In some examples, the width dimension D1 of the first sealing port 121a having a slit shape may be greater than 0.3 mm and less than 0.8 mm.

[0084] In order to prevent a thickness of the first sealing portion 121 from being small and affecting the sealing effect, in some examples, referring to FIG. 16, a thickness dimension H1 of the first sealing port 121a may be greater than or equal to 1 mm and less than or equal to 2 mm. In some embodiments, the thickness dimension H1 of the first sealing port 121a may be greater than 1 mm and less than 2 mm.

[0085] In some examples, a width dimension of the second sealing port 122a should also be less than the diameter of the clamped-in wire harness 20, and in some examples, referring to FIG. 12, the second sealing port 122a may have a slit shape.

[0086] Referring to FIG. 12, in order to ensure that the second sealing port 122a can have a good sealing effect, the width dimension D2 of the second sealing port 122a may be less than or equal to 0.8 mm. In some examples, the width dimension D2 of the second sealing port 122a having a slit shape may be greater than 0.3 mm and less than or equal to 0.8 mm.

[0087] In order to prevent a thickness of the second sealing portion 122 from being small and affecting the sealing effect, in some examples, referring to FIG. 16, a thickness dimension H2 of the second sealing port 122a may be greater than or equal to 1 mm and less than or equal to 2 mm. In some embodiments, the thickness dimension H2 of the second sealing port 122a may be greater than 1 mm and less than 2 mm.

[0088] Another embodiment of the present application provides a heat pump water heater. Referring to FIGs. 4 and 5, the heat pump water heater includes a water tank and a head assembly 1000 arranged on the water tank.

[0089] The electrical control module and the relay module can be electrically connected to a motor, a heating device, a compressor, a display panel, various sensors, and the like of the heat pump water heater through the wire harness 20. The electrical control module and the relay module are also electrically connected by the wire harness 20.

[0090] It should be noted that the electrical control module described in the embodiment of the present application is not limited to being mounted in the heat pump water heater, and the electrical control module described in the embodiment of the present application can also be used in other electrical apparatuses.

[0091] In the related art, the wire-passing structure on the electrical control module is generally provided with a circular wire-passing hole with a relatively large dimension, a diameter of the wire-passing hole is larger than the diameter of the wire harness, and one or more wire harnesses directly pass through the wire-passing hole. Such wire-passing hole has almost no sealing effect, and water such as rainwater can easily permeate into the electrical control module from the wire-passing hole, causing the components in the electrical control module to short circuit.

[0092] The electrical control module according to the embodiment of the present application is provided with the wire-passing structure 12 including the first sealing portion 121 and the second sealing portion 122. The first sealing portion 121 has a first sealing port 121a, the second sealing portion 122 has a second sealing port 122a, and both the first sealing port 121a and the second sealing port 122a can be recoverably expanded. The first sealing portion 121 is the main sealing structure of the wire-passing structure 12, and the second sealing portion 122 is arranged outside the first sealing portion 121 to increase the resistance to the external air flow, block the impact of the external water flow, and reduce the power of the water flow. That is, the second sealing portion 122 functions to protect the first sealing portion 121. Since the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a by expanding the first sealing port 121a and the second sealing port 122a, both the side wall surfaces of the first sealing port 121a and the second sealing port 122a will be in contact with the wire harness 20 after the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a. A gap between the first sealing port 121a and the wire harness 20 as well as a gap between the second sealing port 122a and the wire harness 20 are relatively small, it is difficult for the external water to pass through the gaps. Therefore, both the first sealing port 121a and the second sealing port 122a can bring good sealing effect. That is, by providing the first sealing portion 121 and the second sealing portion 122 in the wire-passing structure 12 of the embodiment of the present application, at least two layers of sealing can be realized, and the first sealing port 121a and the second sealing port 122a that can be recoverably expanded can also effectively block the external water flow such as rainwater. The wire-passing structure 12 can prevent water flow such as rainwater from permeating into the electrical control module from the wire-passing structure 12, and further can improve the sealing performance of the electrical control module.

[0093] In one embodiment, referring to FIG. 6, the electrical control module may further be provided with a second housing 13. The second housing 13 includes a second box body 131 arranged outside the first box body 111 and a second box lid 132 arranged outside the first box lid 112, which is equivalent to the first housing 11 being arranged in the second housing 13. That is, the electrical control module can be provided with at least two layers of housings to improve the fire-proof and explosion-proof performance of the electrical control module.

[0094] The materials of the first housing 11 and the second housing 13 may be the same or different. For example, both the first housing 11 and the second housing 13 may be a plastic member or a metal member, or one of the first housing 11 and the second housing 13 may be a plastic member and the other thereof may be a metal member.

[0095] The first accommodation box main body includes the first box body 111 and the second box body 131, and the first cover-mounted box lid includes the first box lid 112 and the second box lid 132. The first accommodation box main body and the first cover-mounted box lid collectively include the first housing 11 and the second housing 13. The first housing 11 includes the first box body 111 and the first box lid 112, and the second housing 13 includes the second box body 131 and the second box lid 132. Alternatively, the second accommodation box main body includes the first box body 111 and the second box body 131, and the second cover-mounted box lid includes the first box lid 112 and the second box lid 132; the second accommodation box main body and the second cover-mounted box lid collectively include the first housing 11 and the second housing 13; the first housing 11 includes the first box body 111 and the first box lid 112, and the second housing 13 includes the second box body 131 and the second box lid 132. Alternatively, the housing of the electrical control module (including the first accommodation box main body and the first cover-mounted box lid) and the housing of the relay module (including the second accommodation box main body and the second cover-mounted box lid) may have the same structure, and both include the first box body 111, the first box lid 112, the second box body 131, the second box lid 132; and so on. All of the above can achieve the purpose of the present application, and the purpose thereof does not deviate from the design idea of the present application, so they will not be repeated herein, and all of them should fall within the scope of protection of the present application.

[0096] In order to achieve a better fire-proof effect, flame retardant plastics can be used for plastic members.

[0097] In order to facilitate processing and manufacturing, the metal member may be a sheet metal member.

[0098] In some examples, the first housing 11 is a plastic member and the second housing 13 is a metal member in FIG. 6.

[0099] In the related art, a refrigerant used in the heat pump water heater is R290 (propane) refrigerant. As a natural gas, R290 refrigerant is more environmentally friendly, can effectively alleviate the greenhouse effect and reduce the harm caused to the atmosphere. However, R290 refrigerant is flammable and explosive refrigerant, and once ignition occurs, it may cause damage to the heat pump water heater. Therefore, for this type of heat pump water heater, the electrical control module also needs to have good fire-proof and explosion-proof performance.

[0100] By providing the first housing 11 as a plastic member and the second housing 13 as a metal member, not only the second housing 13 provided outside the first housing 11 can be used for fire-proof, but also the components can be protected and heat insulated by the first housing 11, thereby better improving the fire-proof and explosion-proof performance of the electrical control module.

[0101] In some examples, referring to FIGs. 6, and 8 to 11, an outer surface of the first housing 11 may be provided with a water-baffling enclosure 11b having a wire-passing port 11c, and the water-baffling enclosure 11b shields at least a part of the wire-passing structure 12. That is, the water-baffling enclosure 11b may shield only a part of the wire-passing structure 12, or may shield the entire wire-passing structure 12.

[0102] The wire-passing port 11c is a port through which the wire harness 20 passes, and the water-baffling enclosure 11b in FIG. 10 forms the wire-passing port 11c by opening a hole or a notch in the water-baffling enclosure 11b. In other examples, the water-baffling enclosure11b may be spaced apart from the first housing 11 such that the wire-passing port 11c is formed at the spacing.

[0103] The setting position of the wire-passing port 11c may be adjusted as required, and in some examples, referring to FIG. 10, when the electrical control module is in an operational state, the wire-passing port 11c may be located on a bottom side of the water-baffling enclosure 11b. The operational state refers to a state in which the electrical control module is mounted on an electrical apparatus such as heat pump water heater and can be used normally on the electrical apparatus.

[0104] The wire-passing port 11c is located on the bottom side of the water-baffling enclosure 11b, meaning that the wire harness 20 exits from the bottom side of the water-baffling enclosure 11b, so that water on the wire harness 20 can be effectively prevented from flowing along the wire harness 20 to the wire-passing structure 12.

[0105] By shielding at least a part of the structure of the wire-passing structure 12, the water-baffling enclosure 11b can function to block water for the wire-passing structure 12 to prevent water from flowing to the wire-passing structure 12 as much as possible, thereby further improving the waterproof effect.

[0106] In some examples, referring to FIGs. 12 to 14, the first sealing port 121a of the first sealing portion 121 and the second sealing port 122a of the second sealing portion 122 may extend from a first side of the wire-passing structure 12 to an opposite second side of the wire-passing structure 12, respectively. One end of the first sealing port 121a close to the second side penetrates the first sealing portion 121 to form a first wire-passing opening 121b, and one end of the second sealing port 122a close to the second side penetrates the second sealing portion 122 to form a second wire-passing opening 122b.

[0107] That is, the wire harness 20 can be clamped into the first sealing port 121a and the second sealing port 122a from the first wire-passing opening 121b and the second wire-passing opening 122b, whereby the wire harness 20 can extend through the first sealing port 121a and the second sealing port 122a. In addition, the first sealing port 121a and the second sealing port 122a respectively extend from the first side of the wire-passing structure 12 to the opposite second side of the wire-passing structure 12, or the first sealing port 121a and the second sealing port 122a may have a long dimension in an extension direction so as to accommodate the plurality of wire harnesses 20.

[0108] In some examples, referring to FIGs. 12 and 13, the first sealing portion 121 may be provided with a first guide groove 121c in communication with the first wire-passing opening 121b, a side of the first guide groove 121c facing away from the first wire-passing opening 121b is open to form a first opening mouth, and the first guide groove 121c gradually expands from the first wire-passing opening 121b to the first opening mouth. In the process of extending the wire, the wire harness 20 enters the first guide groove 121c from the first opening mouth, and then moves along the first guide groove 121c to the first wire-passing opening 121b. That is, the first guide groove 121c may function to guide the wire harness 20 to the first wire-passing opening 121b, thereby improving the convenience of the wire harness 20 being clamped into the first sealing port 121a from the first wire-passing opening 121b.

[0109] Referring to FIG. 12, the second sealing portion 122 may be provided with a second guide groove 122c in communication with the second wire-passing opening 122b, a side of the second guide groove 122c facing away from the second wire-passing opening 122b is open to form a second opening mouth, and the second guide groove 122c gradually expands from the second wire-passing opening 122b to the second opening mouth. In the process of extending the wire, the wire harness 20 enters the second guide groove 122c from the second opening mouth, and then moves along the second guide groove 122c to the second wire-passing opening 122b. The second guide groove 122c may function to guide the wire harness 20 to the second wire-passing opening 122b, thereby improving the convenience of the wire harness 20 being clamped into the second sealing port 122a from the second wire-passing opening 122b.

[0110] The wire-passing structure 12 in FIG. 12 is provided with the first guide groove 121c and the second guide groove 122c. In some other examples, the wire-passing structure 12 may be provided with only the first guide groove 121c without the second guide groove 122c. In some other examples, the wire-passing structure 12 may be provided with only the second guide groove 122c without the first guide groove 121c.

[0111] In some examples, referring to FIGs. 6 and 15, the mounting port 11a may be provided on the side wall of the first box body 111, and for the wire-passing structure 12 having the first guide groove 121c, the first opening mouth of the first guide groove 121c may face the first box lid 112. Continuing to refer to FIG. 15, an edge of the first box lid 112 may be provided with a protrusion 112a protruding toward the first box body 111, and the protrusion 112a extends into the first guide groove 121c and abuts against the first sealing portion 121.

[0112] Since the wire harness 20 clamped into the first sealing port 121a expands the first sealing port 121a, the protrusion 112a is provided on the first box lid 112 and extends into the first guide groove 121c to abut against the first sealing portion 121. This design not only can effectively prevent the first wire-passing opening 121b from opening under the action of the wire harness 20, which could affect the sealing effect, but also can function to close the first wire-passing opening 121b to prevent the wire harness 20 from escaping from the first wire-passing opening 121b.

[0113] In addition, it is noted that, since the second sealing portion 122 is arranged outside the first sealing portion 121 and the sealing effect is mainly provided by the first sealing portion 121, the sealing effect of the wire-passing structure 12 is substantially not affected even if the second wire-passing opening 122b is opened to some extent under the action of the wire harness 20. Further, the wire harness 20 is less likely to escape from the second wire-passing opening 122b after the protrusion 112a closes the first wire-passing opening 121b. Therefore, even if the second sealing portion 122 is provided with the second guide groove 122c, the protrusion 112a only needs to extend into the first guide groove 121c and abut against the first sealing portion 121, and does not need to extend into the second guide groove 122c and abut against the second sealing portion 122. It is clear that, in some examples, the protrusion 112a may extend into the second guide groove 122c and abut against the second sealing portion 122.

[0114] In some examples, referring to FIG. 13, a portion of a region of the first sealing portion 121 facing away from the second sealing portion 122 may protrude in a direction away from the second sealing portion 122 to form a convex rib 121d. The convex rib 121d encloses to form a first wire-passing groove 121e in communication with the first sealing port 121a and the first wire-passing opening 121b, respectively. That is, the wire harness 20 also extends through the first wire-passing groove 121e.

[0115] The convex rib 121d can improve the strength of the wire-passing structure 12 to better prevent the wire-passing structure 12 from being deformed.

[0116] In some examples, referring to FIGs. 13 and 15, a buckle 121f may also be provided on a side of the convex rib 121d facing away from the first wire-passing groove 121e, and the buckle 121f is snapped into the first housing 11. That is, the wire-passing structure 12 can be fixed at the mounting port 11a by being snapped into the first housing 11, and the convex rib 121d also provides a suitable position for providing the buckle 121f.

[0117] In some examples, referring to FIGs. 14 and 16, a portion of a region of the second sealing portion 122 close to the first sealing portion 121 may be recessed in a direction away from the first sealing portion 121 to form a second wire-passing groove 122d in communication with the first sealing port 121a, the second sealing port 122a, and the second wire-passing opening 122b, respectively.

[0118] The second wire-passing groove 122d corresponds to a transition space between the first sealing portion 121 and the second sealing portion 122, and the wire harness 20 also extends through the second wire-passing groove 122d. The second wire-passing groove 122d may function to separate the first sealing port 121a from the second sealing port 122a, so as to better prevent water flow permeating into the second sealing port 122a from directly flowing into the first sealing port 121a.

[0119] In some examples, referring to FIGs. 14 and 16, on a side of the second wire-passing groove 122d opposite to the second wire-passing opening 122b, there is a groove opening 122e in communication with the interior of the second wire-passing groove 122d. A side of the second sealing portion 122 having the groove opening 122e is sealingly fitted with the first housing 11 to close the groove opening 122e.

[0120] In some examples, when the wire-passing structure 12 is produced by certain processing methods, for example, since such processing method is adopted, when the wire-passing structure 12 is formed through injection molding, the groove opening 122e is inevitably formed on the second wire-passing groove 122d due to mold ejection, and the groove opening 122e will have a certain influence on the sealing performance of the wire-passing structure 12. Therefore, the side of the second sealing portion 122 having the groove opening 122e can be sealingly fitted with the first housing 11, for example, the side of the second sealing portion 122 having the groove opening 122e can be in sealing contact with the first housing 11 to close the groove opening 122e.

[0121] In some examples, referring to FIG. 16, for the wire-passing structure 12 having the water-baffling enclosure 11b, the side of the second sealing portion 122 having the groove opening 122e may be located in and sealingly fitted with the water-baffling enclosure 11b.

[0122] In some examples, referring to FIGs. 12 and 14, the second sealing port 122a may penetrate the side of the second sealing portion 122 having the groove opening 122e, meaning that an end of the second sealing port 122a opposite to the second wire-passing opening 122b may be an opening end. In some examples, the second sealing portion 122 may be provided with at least one cutting slit 122f that intersects with the second sealing port 122a.

[0123] The second sealing portion 122 in FIGs. 12 and 14 is provided with two cutting slits 122f, and in some other examples, the second sealing portion 122 may be provided with one cutting slit 122f or two or more cutting slits 122f.

[0124] The second sealing port 122a penetrates the side of the second sealing portion 122 having the groove opening 122e in order to facilitate processing and manufacturing. However, since the wire harness 20 clamped into the second sealing port 122a will expand the second sealing port 122a, by providing the cutting slit 122f intersecting the second sealing port 122a, it is possible to better prevent the wire harness 20 from excessively expanding an end of the second sealing port 122a opposite to the second wire-passing opening 122b, which could otherwise affect the sealing performance.

[0125] It can be understood that, on the premise of satisfying processing requirements, the second sealing port 122a may not penetrate the side of the second sealing portion 122 having the groove opening 122e, and in the same way, the side of the second passing groove 122d opposite to the second wire-passing opening 122b may not be provided with the groove opening 122e.

[0126] In some examples, referring to FIGs. 8 to 11, the water-baffling enclosure 11b may be provided with a first wall 11b1 and a second wall 11b2 defining a water-baffling groove 11e having an avoidance port 11d and a wire-passing port 11c. The first wall 11b1 and the avoidance port 11d are respectively located on opposite sides of the second wall 11b2 in a first direction. At least the first side of the wire-passing structure 12 is located in the water-baffling groove 11e and faces the first wall 11b1. That is, the first wire-passing opening 121b and the second wire-passing opening 122b are located on a side of the water-baffling groove 11e provided with the avoidance port 11d, and the avoidance port 11d is configured to avoid the wire harness 20 when the wire harness 20 is clamped into the first sealing port 121a and the second sealing port 122a.

[0127] In FIG. 8, two wire-passing structures 12 are provided in the water-baffling groove 11e, and in other examples, one wire-passing structure 12 may be provided in the water-baffling groove 11e, or two or more wire-passing structures 12 may be provided in the water-baffling groove 11e.

[0128] In addition, when the electrical control module is in the operational state, an outer surface of the first wall 11b1 can be used as a water-facing surface, that is, water flow such as rainwater mainly flushes the outer surface of the first wall 11b1. Therefore, the water-baffling enclosure 11b can exhibit a good water-baffling effect.

[0129] Continuing to refer to FIGs. 8 and 10, the wire-passing port 11c may be located on a side of the second wall 11b2 along a second direction, and the wire-passing port 11c is located on a bottom side of the second wall 11b2 when the electrical control module is in the operational state. The second direction intersects the first direction.

[0130] The second direction in FIG. 10 is orthogonal to (i.e., perpendicularly intersects) the first direction in FIG. 11, and in other examples, the second direction obliquely intersects the first direction.

[0131] Referring to FIG. 10, in order to better prevent the water flow from flowing back to the second sealing port 122a along the wire harness 20, a shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in a height direction may be greater than or equal to 10 mm.

[0132] The height direction described herein refers to a height direction of the electrical control module in the operational state. When at least two wire-passing structures 12 are provided in the water-baffling groove 11e, the shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in the height direction is a distance between the second sealing port 122a on the wire-passing structure 12 closest to the wire-passing port 11c and the wire-passing port 11c in the height direction, as shown in FIG. 10. When only one wire-passing structure 12 is provided in the water-baffling groove 11e, the shortest distance L1 between the wire-passing port 11c and the second sealing port 122a in the height direction is a distance between the second sealing port 122a on the wire-passing structure 12 and the wire-passing port 11c in the height direction.

[0133] Referring to FIG. 11, in order to achieve a better water-baffling effect, a dimension L2 of the second wall 11b2 in the first direction may be greater than or equal to 15 mm.

[0134] In some examples, referring to FIGs. 6, 17, and 18, the electrical control module may be provided with a capacitor 14 and a sealing sleeve 15. The first box body 111 is provided with a mounting tube 111a, a first end of the mounting tube 111a protrudes from the outer surface of the first box body 111, the capacitor 14 extends through the mounting tube, and the sealing sleeve 15 is sealingly sleeved at the first end of the mounting tube 111a to close the first end.

[0135] The sealing sleeve 15 can not only protect the capacitor 14, but also prevent water vapor from entering the interior of the electrical control module.

[0136] In some examples, referring to FIG. 17, the sealing sleeve 15 may be provided with a vent hole 14a. When mounting the sealing sleeve 15, the vent hole 14a may be used for venting, so as to facilitate the mounting of the sealing sleeve 15.

[0137] Referring to FIG. 17, for the electrical control module provided with the second housing 13, the second box body 131 may be provided with a through hole 131a, and the mounting tube 111a extends through the through hole 131a. The first box body 111 may be fitted against a part of the second box body 131 located on a peripheral side of the through hole 131a to prevent water vapor from entering the internal of the electrical control module from a junction between the through hole 131a and the mounting tube 111a as much as possible.

[0138] In some examples, referring to FIGs. 17 and 18, the first box body 111 and the second box body 131 may be spaced apart in a partial region to form a spacing space 131b, a plurality of reinforcing ribs 111b may be provided on a side of the first box body 111 close to the second box body 131, and the reinforcing ribs 111b are located in the spacing space 131b. The reinforcing ribs 111b are mainly used to reinforce the first box body 111 to improve the strength of the first box body 111.

[0139] In some examples, referring to FIG. 17, when the electrical control module is in the operational state, at least one reinforcing rib 111b is located on a lower side of the mounting tube 111a. The reinforcing rib 111b located on the lower side of the mounting tube 111a is spaced apart from the second box body 131, so that a drainage gap 111c is formed at the spacing.

[0140] When water vapor permeates into the junction between the through hole 131a and the mounting tube 111a, the water flow formed by the accumulation of water vapor flows into the spacing space 131b on the lower side of the mounting tube 111a, and the reinforcing rib 111b located on the lower side of the mounting tube 111a is spaced apart from the second box body 131. In this way, the water flow flowing into the spacing space 131b can be discharged from the drainage gap 111c to avoid the accumulation of water flow at the reinforcing rib 111b as much as possible.

[0141] A heat pump water heater (not shown in the figure) according to an embodiment of the present disclosure includes the head assembly described in any of the above embodiments.

[0142] The heat pump water heater has all the advantages of the head assembly provided in any of the above embodiments, which will not be repeatedly described herein.

[0143] In summary, according to the technical solution provided by an embodiment of the present disclosure, the relay module is independent of the electrical control module, so that a height of the electrical control module can be made less compared to a height of the electrical control box in the related art, and a height of the relay module can also be made less compared to the height of the electrical control box in the related art. Further, the relay module and the electrical control module are spaced apart in the circumferential direction of the housing, therefore, the height of the housing is not required to be increased. In addition, a heat generation of the electrical control module is reduced compared to a heat generation of the electrical control box in the related art, and a heat generation of the relay module is also reduced compared to the heat generation of the electrical control box in the related art, so that the temperature inside the electrical control module in the high-temperature environment is lower, and the temperature inside the relay module in the high-temperature environment is also lower. Therefore, the relay module and the electrical control module have better operating performance and longer service life in the high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in the high-temperature environment.

[0144] In the description of the present disclosure, it is to be understood that orientation or positional relationships indicated by terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on those shown in the drawings and are intended only for ease of description of the present application and simplification of the description, and are not intended to indicate or imply that the device or element referred must have a particular orientation, or is constructed and operated in a particular orientation and therefore cannot be construed as limitations on the present application.

[0145] Furthermore, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, the features defined by "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "multiple / a plurality of" means at least two, e.g. two, three, etc., unless expressly specified otherwise.

[0146] In the present application, unless otherwise expressly specified and limited, terms "mounted", "connected", "connection", "fixed" and the like are understood in a broad sense. It may be, for example, a fixed connection, a detachable connection, or an integrated structure. It may be a mechanical connection or an electrical connection, may be a direct connection or an indirect connection through an intermediate medium, or may be an internal connection between two elements or an interactive relationship between two elements, unless otherwise expressly defined. For those of ordinary skills in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0147] In the present application, the first feature being "above" or "below" the second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature via an intermediate medium, unless otherwise expressly specified and defined. Moreover, the first feature being "above", "on" and "over" the second feature may be the first feature being directly above or obliquely above the second feature, or simply indicate that a horizontal height of the first feature is greater than that of the second feature. The first feature being "below", "under" and "underneath" the second feature may be the first feature being directly below or obliquely below the second feature, or simply mean that the horizontal height of the first feature is less than that of the second feature.

[0148] In the description of this specification, descriptions with reference to terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like mean that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic description of the above terms needs not be directed to the same embodiments or examples. Further, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, one skilled in the art may combine and integrate different embodiments or examples described in this specification and features of different embodiments or examples if there is no conflict.

[0149] Although implementations disclosed herein are described above, the described contents are only implementations used for facilitating understanding of the present application, and are not intended to limit the present application. It should be noted that the above-described embodiments or implementations are merely exemplary and not limiting. Accordingly, the present disclosure is not limited to what is specifically shown and described herein. Various modifications, substitutions, or omissions may be made to the forms and details of the embodiments without departing from the scope of the present disclosure.

Examples

Embodiment Construction

[0040]A clear and complete description of the technical solutions of the embodiments of the present application will be given below with reference to the accompanying drawings in the embodiments of the present application, and it will be apparent that the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained without creative effort by those of ordinary skills in the art fall within the scope of protection of the present application.

[0041]The present application provides a head assembly that exhibits better operating performance in high-temperature environments.

[0042]The present application also provides a heat pump water heater.

[0043]As shown in FIGs. 1 to 3, a head assembly for a heat pump water heater provided by an embodiment of the present disclosure includes: a housing 100; an electrical control module 200 arranged in the housing 100; and a relay mod...

Claims

1. A head assembly for a heat pump water heater, comprising: a housing; an electrical control module arranged in the housing; and a relay module arranged in the housing and spaced apart from the electrical control module in a circumferential direction of the housing.

2. The head assembly of claim 1, further comprising a wiring module located outside the relay module in a radial direction of the housing and arranged on a side wall of the housing.

3. The head assembly of claim 2, wherein the wiring module comprises a junction box, and the side wall of the housing is provided with a first mounting port, the junction box being fixedly connected at the first mounting port from outside to inside along the radial direction of the housing.

4. The head assembly of claim 3, wherein the relay module comprises: a first box main body arranged in the housing, an opening of the first box main body facing the first mounting port; a relay main board arranged in the first box main body; and a first box lid fixedly connected to the first box main body from outside to inside along the radial direction of the housing.

5. The head assembly of claim 4, wherein a size of the first mounting port is not less than a size of the first box lid.

6. The head assembly of any one of claims 1 to 5, further comprising a display module located outside the electrical control module in a radial direction of the housing and arranged on a side wall of the housing.

7. The head assembly of claim 6, wherein the display module comprises a display panel, and the side wall of the housing being provided with a second mounting port, the display panel being fixedly connected at the second mounting port from outside to inside along the radial direction of the housing.

8. The head assembly of claim 7, wherein the electrical control module comprises: a second box main body arranged in the housing, an opening of the second box main body facing the second mounting port; an electrical control main board arranged in the second box main body; and a second box lid fixedly connected to the second box main body from outside to inside along the radial direction of the housing.

9. The head assembly of claim 8, wherein a size of the second mounting port is not less than a size of the second box lid.

10. The head assembly of any one of claims 2 to 5, further comprising a demand respond module arranged on a side surface of the wiring module facing away from the relay module, a size of the demand respond module being not larger than a size of the wiring module.

11. The head assembly of any one of claims 1 to 5, wherein a center angle formed by a projection of a center of the electrical control module and a center of the relay module on a bottom wall of the housing and a center of the bottom wall of the housing is no greater than 90 degrees.

12. The head assembly of claim 1, wherein the electrical control module or the relay module comprises: a first housing having a mounting port, the first housing comprising a first box body and a first box lid covering the first box body; and a wire-passing structure arranged at the mounting port, the wire-passing structure comprising a first sealing portion having a first sealing port and a second sealing portion having a second sealing port, both the first sealing port and the second sealing port being recoverably expanded, the second sealing portion being arranged outside the first sealing portion, and the first sealing port being in communication with the second sealing port.

13. The head assembly of claim 12, wherein an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, the water-baffling enclosure shielding at least a part of the wire-passing structure.

14. The head assembly of claim 13, wherein the first sealing port and the second sealing port extend from a first side of the wire-passing structure toward a second side opposite to the first side, wherein an end of the first sealing port close to the second side penetrates the first sealing portion to form a first wire-passing opening, and an end of the second sealing port close to the second side penetrates the second sealing portion to form a second wire-passing opening.

15. The head assembly of claim 14, wherein: the first sealing portion further has a first guide groove in communication with the first wire-passing opening, wherein a side of the first guide groove facing away from the first wire-passing opening is open to form a first opening mouth, and the first guide groove gradually expands from the first wire-passing opening to the first opening mouth; and the second sealing portion further has a second guide groove in communication with the second wire-passing opening, wherein a side of the second guide groove facing away from the second wire-passing opening is open to form a second opening mouth, and the second guide groove gradually expands from the second wire-passing opening to the second opening mouth.

16. The head assembly of claim 15, wherein: the mounting port is arranged on a side wall of the first box body; the first opening mouth faces the first box lid; and an edge of the first box lid has a protrusion protruding toward the first box body, wherein the protrusion extends into the first guide groove and abuts against the first sealing portion.

17. The head assembly of any one of claims 14 to 16, wherein a portion of a region of the first sealing portion facing away from the second sealing portion protrudes in a direction away from the second sealing portion to form a convex rib, and the convex rib encloses to form a first wire-passing groove in communication with the first sealing port and the first wire-passing opening.

18. The head assembly of claim 17, wherein a buckle is provided on a side of the convex rib facing away from the first wire-passing groove, and the buckle is snapped into the first housing.

19. The head assembly of any one of claims 14 to 16, wherein a portion of a region of the second sealing portion close to the first sealing portion is recessed in a direction away from the first sealing portion to form a second wire-passing groove in communication with the first sealing port, the second sealing port, and the second wire-passing opening.

20. The head assembly of claim 19, wherein a groove opening in communication with the second wire-passing groove is provided on a side of the second wire-passing groove opposite to the second wire-passing opening, and a side of the second sealing portion having the groove opening is sealingly fitted with the first housing to close the groove opening.

21. The head assembly of claim 20, wherein an outer surface of the first housing is provided with a water-baffling enclosure having a wire-passing port, wherein the water-baffling enclosure shields at least a part of the wire-passing structure, and the side of the second sealing portion having the groove opening is located in the water-baffling enclosure and sealingly fitted with the water-baffling enclosure.

22. The head assembly of claim 20, wherein the second sealing port penetrates the side of the second sealing portion having the groove opening, and the second sealing portion further has at least one cutting slit that intersects the second sealing port.

23. The head assembly of claim 14, wherein the water-baffling enclosure comprises a first wall and a second wall, the first wall and the second wall defining a water-baffling groove having an avoidance port and the wire-passing port, wherein the first wall and the avoidance port are respectively located on opposite sides of the second wall in a first direction, and at least the first side of the wire-passing structure is located in the water-baffling groove and faces the first wall.

24. The head assembly of claim 23, wherein the wire-passing port is located on a side of the second wall along a second direction, and the wire-passing port is located on a bottom side of the second wall when the head assembly is in an operational state, wherein the second direction intersects the first direction.

25. The head assembly of any one of claims 12 to 16, wherein one of the first box body and the first box lid has a sealing groove, and the other of the first box body and the first box lid is inserted into the sealing groove, so that the first box body is sealingly fitted with the first box lid.

26. The head assembly of any one of claims 12 to 16, further comprising a second housing, wherein the second housing comprises a second box body arranged outside the first box body and a second box lid arranged outside the first box lid.

27. The head assembly of any one of claims 12 to 16, wherein the head assembly comprises a capacitor and a sealing sleeve, and the first box body is provided with a mounting tube, wherein: a first end of the mounting tube protrudes from an outer surface of the first box body; the capacitor extends through the mounting tube; and the sealing sleeve is sealingly sleeved at the first end of the mounting tube to close the first end.

28. The head assembly of claim 27, further comprising a second housing, wherein: the second housing comprises a second box body arranged outside the first box body and having a through hole; the mounting tube extends through the through hole; and the first box body is fitted against a part of the second box body located on a peripheral side of the through hole.

29. The head assembly of claim 28, wherein the first box body and the second box body are spaced apart in a partial region to form a spacing space, and a plurality of reinforcing ribs located in the spacing space are provided on a side of the first box body close to the second box body, wherein when the head assembly is in an operational state, at least one reinforcing rib of the plurality of reinforcing ribs is located on a lower side of the mounting tube, and the reinforcing rib located on the lower side of the mounting tube is spaced apart from the second box body, so that a drainage gap is formed at the spacing.

30. A heat pump water heater, comprising the head assembly of any one of claims 1 to 29.

Images