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

Heat pump water heater and head assembly thereof

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on August 31, 2023, with application number 2023111228985, titled "A heat pump water heater and its head assembly", the Chinese patent application filed with the Patent Office of China on August 31, 2023, with application number 202322371628X, titled "A heat pump water heater and its head assembly", and the Chinese patent application filed with the Patent Office of China on August 31, 2023, with application number 2023111200072, titled "An electric control box, a wire passing structure and a heat pump water heater", the contents of which should be understood as being incorporated into this application by reference. Technical Field

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

[0003] The relevant heat pump water heater has a head assembly including a housing, an electric control box, a wiring module and a DR module (DR module is a Demand Respond module), etc. The electric control box is vertically installed in the housing, the DR module is installed on the top wall of the housing and protrudes upward relative to the top wall of the housing, and the side wall of the housing is provided with an inspection port for inspecting the electric control box. Among them, the electric control box includes a box body, a box cover, an electric control main board and a relay main board. The opening of the housing faces the inspection port. The electric control main board and the relay main board are both arranged in the box body and vertically arranged in sequence in the upper and lower directions. The box cover is installed on the box body. Improving the operating performance of heat pump water heaters in high temperature environments is a technical problem that those skilled in the art have been committed to solving.

[0004] Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The head assembly for a heat pump water heater provided in an embodiment of the present invention includes: a housing; an electronic control module disposed in the housing; and a relay module disposed in the housing and spaced apart from the electronic control module in the circumferential direction of the housing.

[0007] In some exemplary embodiments, the head assembly further includes: a wiring module, which is located outside the relay module in the radial direction of the housing and is provided on a side wall of the housing.

[0008] In some exemplary embodiments, the junction module includes a junction box, a side wall of the housing is provided with a first mounting opening, and the junction box is fixedly connected to the first mounting opening from outside to inside along the radial direction of the housing.

[0009] In some exemplary embodiments, the relay module includes: a first accommodating box body, which is arranged in the shell, and the opening of the first accommodating box body faces the first mounting port; a relay main board, which is arranged in the first accommodating box body; and a first cover, which is fixed to the first accommodating box body from the outside to the inside along the radial direction of the shell.

[0010] In some exemplary embodiments, a size of the first mounting opening is not less than a size of the first cover mounting box lid.

[0011] In some exemplary embodiments, the head assembly further includes: a display module, which is located outside the electronic control module in the radial direction of the shell and is provided on the side wall of the shell.

[0012] In some exemplary embodiments, the display module includes a display panel, a side wall of the housing is provided with a second mounting opening, and the display panel is fixedly connected to the second mounting opening from outside to inside along the radial direction of the housing.

[0013] In some exemplary embodiments, the electronic control module includes: a second accommodating box body, which is arranged in the shell, and the opening of the second accommodating box body faces the second mounting port; an electronic control main board, which is arranged in the second accommodating box body; and a second cover, which is fixed to the second accommodating box body from the outside to the inside along the radial direction of the shell.

[0014] In some exemplary embodiments, a size of the second mounting opening is not less than a size of the second cover mounting box cover.

[0015] In some exemplary embodiments, the head assembly further includes: a DR module, which is disposed on a side 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.

[0016] In some exemplary embodiments, a central angle formed by projections of the center of the electric control module and the center of the relay module on the bottom wall of the housing and the center of the bottom wall of the housing is no greater than 90 degrees.

[0017] In some exemplary embodiments, the electronic control module or the relay module includes: a first shell having an installation opening, the first shell including a first box body and a first box cover provided on the first box body; a wire-passing structure arranged at the installation opening, the wire-passing structure including a first sealing portion having a first sealing opening and a second sealing portion having a second sealing opening, the first sealing opening and the second sealing opening can both be restorably expanded, the second sealing portion is arranged on the outside of the first sealing portion, and the first sealing port is connected to the second sealing port.

[0018] In some exemplary embodiments, a water shield having a wire passing opening is provided on the outer surface of the first shell, and the water shield at least covers a portion of the wire passing structure.

[0019] In some exemplary embodiments, the first sealing port and the second sealing port extend respectively from a first side of the wire-passing structure to a second side corresponding to the first side, and an end of the first sealing port close to the second side passes through the first sealing portion to form a first wire-passing opening, and an end of the second sealing port close to the second side passes through the second sealing portion to form a second wire-passing opening.

[0020] In some exemplary embodiments, the first sealing portion further has a first guide groove connected to the first wire opening, and the first guide groove is open on a side away from the first wire opening to form a first opening, and the first guide groove gradually expands from the first wire opening to the first opening.

[0021] In some exemplary embodiments, the second sealing portion further has a second guide groove connected to the second wire opening, and the second guide groove is open on the side away from the second wire opening to form a second opening, and the second guide groove gradually expands from the second wire opening to the second opening.

[0022] In some exemplary embodiments, the mounting opening is arranged on the side wall of the first box body, the first opening faces the first box cover, the edge of the first box cover has a protrusion protruding toward the first box body, the protrusion extends into the first guide groove, and abuts against the first sealing portion.

[0023] In some exemplary embodiments, a partial area of ​​the first sealing portion on a side facing away from the second sealing portion protrudes toward the second sealing portion to form a rib, and the rib encloses a first wire passing groove respectively connected to the first sealing port and the first wire passing opening.

[0024] In some exemplary embodiments, the rib has a buckle on the side facing away from the first wire groove, and the buckle is engaged with the first shell.

[0025] In some exemplary embodiments, a partial area of ​​the second sealing portion on a side close to the first sealing portion is recessed in a direction away from the first sealing portion to form a second wire passing groove respectively connected to the first sealing port, the second sealing port and the second wire passing opening.

[0026] In some exemplary embodiments, the side of the second wire-passing groove opposite to the second wire-passing opening has a slot connected to the second wire-passing groove, and the second sealing portion has a side of the slot that seals with the first shell to close the slot.

[0027] In some exemplary embodiments, the outer surface of the first shell is provided with a water shield having a wire passing opening, and the water shield at least covers a portion of the wire passing structure, and the second sealing portion has a side of the slot located in the water shield and sealed with the water shield.

[0028] In some exemplary embodiments, the second sealing opening penetrates the side of the second sealing portion having the notch, and the second sealing portion further has at least one slit intersecting the second sealing opening.

[0029] In some exemplary embodiments, the water retaining cover includes a first wall body and a second wall body, and the first wall body and the second wall body define a water retaining groove having an avoidance opening and the passing line opening, wherein the first wall body and the avoidance opening are respectively located on two opposite sides of the second wall body along the first direction; at least the first side of the passing line structure is located in the water retaining groove and facing the first wall body.

[0030] In some exemplary embodiments, the wire passing opening is located on one side of the second wall along the second direction, and when the head assembly is in use, the wire passing opening is located on the bottom side of the second wall, wherein the second direction intersects with the first direction.

[0031] In some exemplary embodiments, one of the first box body and the first box cover has a sealing groove, and the other of the first box body and the first box cover is inserted into the sealing groove to ensure a sealing fit between the first box body and the first box cover.

[0032] In some exemplary embodiments, the head assembly further includes a second shell, wherein the second shell includes a second box body disposed outside the first box body and a second box cover disposed outside the first box cover.

[0033] In some exemplary embodiments, the head assembly includes a capacitor and a sealing sleeve, the first box body is provided with a mounting tube, the first end of the mounting tube protrudes from the outer surface of the first box body, the capacitor is inserted into the mounting tube, and the sealing sleeve is sealingly mounted on the first end of the mounting tube to close the first end.

[0034] In some exemplary embodiments, the head assembly also includes a second shell, the second shell includes a second box body arranged on the outside of the first box body and having a through hole, the mounting tube is passed through the through hole, and the first box body and the second box body are fitted at the parts located around the through hole.

[0035] In some exemplary embodiments, a partial area between the first box body and the second box body is spaced apart to form a spacing space, and the side of the first box body close to the second box body has a plurality of reinforcing ribs located in the spacing space; wherein, when the head assembly is in use, at least one of the reinforcing ribs is located on the 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 to form a drainage gap at the spacing.

[0036] The heat pump water heater provided in an embodiment of the present invention includes the head assembly described in any one of the above embodiments.

[0037] According to the technical solution proposed in the embodiment of the present invention, the relay module is independent of the electronic control module, so that the height of the electronic control module can be made smaller than the height of the electronic control box in the related art, and the height of the relay module can also be made smaller than the height of the electronic control box in the related art, and the relay module and the electronic control module are spaced apart in the circumferential direction of the shell, so there is no need to increase the height of the shell; in addition, the heat generation of the electronic control module is reduced compared with the heat generation of the electronic control box in the related art, and the heat generation of the relay module is also reduced compared with the heat generation of the electronic control box in the related art, so that the temperature inside the electronic control module is lower in a high-temperature environment, and the temperature inside the relay module is also lower in a high-temperature environment, so the relay module and the electronic control module have better operating performance and longer service life in a high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in a high-temperature environment.

[0038] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description.

[0039] Summary of the Figures

[0040] FIG1 is a schematic diagram of the front view of a head assembly provided in some embodiments of the present application;

[0041] FIG2 is a schematic cross-sectional view of the head assembly shown in FIG1 ;

[0042] FIG3 is a schematic diagram of the exploded structure of the head assembly shown in FIG1 ;

[0043] FIG4 is a schematic structural diagram of a head assembly of a heat pump water heater according to an embodiment of the present application;

[0044] FIG5 is a schematic diagram of the internal structure of the head assembly shown in FIG4 , in which the electronic control module is in use;

[0045] FIG6 is an exploded view of the electronic control module shown in FIG5 ;

[0046] FIG7 is a cross-sectional view of a portion of the structure of the electronic control module shown in FIG5 ;

[0047] FIG8 is a schematic diagram of a partial structure of the electronic control module shown in FIG5 ;

[0048] FIG9 is a schematic diagram of a partial structure of the electronic control module shown in FIG5 ;

[0049] FIG10 is a schematic diagram of a partial structure of the electronic control module shown in FIG5 , showing a wiring harness;

[0050] FIG11 is a schematic diagram of a partial structure of the electronic control module shown in FIG5 ;

[0051] FIG12 is a structural diagram of the wire-passing structure shown in FIG6 from one perspective;

[0052] FIG13 is a schematic structural diagram of the wire-passing structure shown in FIG12 from another perspective;

[0053] FIG14 is a structural diagram of the wire-passing structure shown in FIG12 from another perspective;

[0054] FIG15 is a schematic diagram of a partial structure of the electronic control module shown in FIG5 ;

[0055] FIG16 is a cross-sectional view of a portion of the structure of the electronic control module shown in FIG5 ;

[0056] FIG17 is a cross-sectional view of a portion of the structure of the electronic control module shown in FIG5 ;

[0057] FIG18 is a schematic diagram of a partial structure of the first box body shown in FIG5 .

[0058] In the drawings, the components represented by the reference numerals are as follows: 100 housing, 110 first mounting port, 120 second mounting port, 200 electronic control module, 210 second accommodating box body, 220 electronic control main board, 230 second cover mounting box cover, 300 relay module, 310 first accommodating box body, 320 relay main board, 330 first cover mounting box cover, 400 wiring module, 500 display module, 600 DR module; 1000, head assembly; 11, first shell; 11a, mounting port; 11b, water shield; 11b1, first wall; 11b2, second wall; 11c, wire opening; 11d, avoidance port; 11e, water retaining groove; 111, first box body; 111a, mounting pipe; 111b, reinforcing rib; 111c, drainage gap; 112, first box cover; 112a, raised portion; 112b, sealing groove; 12, wire structure; 121, first sealing portion; 121a, first sealing port; 121b, first wire opening opening; 121c, first guide groove; 121d, rib; 121e, first wire-passing groove; 121f, buckle; 122, second sealing portion; 122a, second sealing opening; 122b, second wire-passing opening; 122c, second guide groove; 122d, second wire-passing groove; 122e, notch; 122f, slit; 13, second shell; 131, second box body; 131a, through hole; 131b, partition space; 132, second box cover; 14, capacitor; 14a, vent; 15, sealing sleeve; 20, wiring harness.

[0059] Details

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0061] The present application provides a head assembly that has better operating performance in a high-temperature environment.

[0062] The present application also provides a heat pump water heater.

[0063] The head assembly for a heat pump water heater provided by an embodiment of the present invention, as shown in Figures 1 to 3, includes: a shell 100; an electronic control module 200, which is arranged in the shell 100; and a relay module 300, which is arranged in the shell 100 and is spaced apart from the electronic control module 200 in the circumferential direction of the shell 100.

[0064] The relay module 300 is independent of the electronic control module 200, so that the height of the electronic control module 200 can be made smaller than the height of the electronic control box in the related art, and the height of the relay module 300 can also be made smaller than the height of the electronic control box in the related art, and the relay module 300 and the electronic control module 200 are spaced apart in the circumferential direction of the shell 100, so there is no need to increase the height of the shell 100; in addition, the heat generation of the electronic control module 200 is reduced compared with the heat generation of the electronic control box in the related art, and the heat generation of the relay module 300 is also reduced compared with the heat generation of the electronic control box in the related art. In this way, the temperature inside the electronic control module 200 is lower in a high temperature environment, and the temperature inside the relay module 300 is also lower in a high temperature environment. Therefore, the relay module 300 and the electronic control module 200 have better operating performance and longer service life in a high temperature environment, and the corresponding head assembly has better operating performance and longer service life in a high temperature environment.

[0065] In some exemplary embodiments, the head assembly further includes a wiring module 400, which is radially located outside the relay module 300 and disposed on a sidewall of the housing 100. The wiring module 400 is configured to electrically connect to a mains power source. The wiring module 400 is radially located outside the relay module 300 in the housing 100, facilitating connection between the wiring module 400 and the relay module 300.

[0066] In some examples, as shown in FIG. 1 to FIG. 3 , the junction module 400 includes a junction box, a first mounting opening 110 is provided on a side wall of the housing 100 , and the junction box is fixed to the first mounting opening 110 from outside to inside along the radial direction of the housing 100 .

[0067] A first mounting port 110 is provided on the side wall of the shell 100, and the junction box is fixed at the first mounting port 110 from the outside to the inside along the radial direction of the shell 100. The junction box can be removed from the shell 100 outside the shell 100, and the relay module 300 can be inspected from the first mounting port 110. This solution simplifies the inspection process of the relay module 300, and there is no need to specially open an inspection port on the shell 100 for inspecting the relay module 300, which can improve the aesthetics and integrity of the head assembly.

[0068] It can be that the mouth wall of the first mounting port 110 is provided with a buckle position, and the junction box is provided with a buckle, and the buckle is clamped on the buckle position from the outside to the inside along the radial direction of the shell 100, so that the junction box is fixed to the mouth wall of the first mounting port 110; or it can be that the mouth wall of the first mounting port 110 is provided with a screw hole, and the junction box is provided with a through hole, and the screw passes through the through hole from the outside to the inside along the radial direction of the shell 100 and is tightened in the screw hole, so that the junction box is fixed to the mouth wall of the first mounting port 110, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of this application, and will not be repeated here, and should all fall within the scope of protection of this application.

[0069] In some examples, as shown in Figures 2 and 3, the relay module 300 includes: a first accommodating box body 310, the first accommodating box body 310 is upright in the shell 100, and the opening of the first accommodating box body 310 faces the first mounting port 110; a relay main board 320, the relay main board 320 is arranged in the first accommodating box body 310 and arranged in the up and down directions; and a first cover 330, the first cover 330 is fixed to the first accommodating box body 310 from the outside to the inside along the radial direction of the shell 100.

[0070] Remove the junction box outside the shell 100, and then remove the first cover 330 from the first installation port 110, and then repair the relay main board 320 from the first installation port 110. This solution makes the repair process of the relay main board 320 (i.e., the process of spot checking the relay main board 320) simpler.

[0071] In some examples, as shown in Figure 3, the size (including length and width) of the first mounting port 110 is not less than the size (including length and width) of the first cover-mounted box cover 330. This is more conducive to removing the first cover-mounted box cover 330 from the first mounting port 110, and it is also possible to take out and install the first cover-mounted box cover 330 from the first mounting port 110. After the first cover-mounted box cover 330 is taken out from the first mounting port 110, it is more conducive to the maintenance of the relay main board 320. This solution makes the maintenance process of the relay main board 320 simpler.

[0072] In some exemplary embodiments, as shown in Figures 1 to 3, the head assembly also includes: a display module 500, which is located on the outside of the electronic control module 200 in the radial direction of the shell 100 and is arranged on the side wall of the shell 100 to facilitate wiring of the display module 500 and the electronic control module 200.

[0073] In some examples, as shown in FIG. 1 to FIG. 3 , the display module 500 includes a display panel, a second mounting opening 120 is provided on the side wall of the housing 100 , and the display panel is fixed to the second mounting opening 120 from outside to inside along the radial direction of the housing 100 .

[0074] A second mounting port 120 is provided on the side wall of the shell 100, and the display panel is fixed at the second mounting port 120 from the outside to the inside along the radial direction of the shell 100. The display panel can be removed from the outside of the shell 100, and the electronic control module 200 can be inspected from the second mounting port 120. This solution makes the inspection process of the electronic control module 200 simpler, and there is no need to specially open an inspection port on the shell 100 for inspecting the electronic control module 200, which can improve the aesthetics and integrity of the head assembly.

[0075] In some examples, the wall of the second mounting port 120 is provided with a buckle position, and the display panel is provided with a clip, which is snapped onto the buckle position from the outside to the inside along the radial direction of the shell 100 to achieve the display panel being fixed to the wall of the second mounting port 120. In this solution, the side of the display panel facing away from the electronic control module 200 is smoother and more beautiful.

[0076] In some examples, as shown in Figures 2 and 3, the electronic control module 200 includes: a second accommodating box body 210, which is upright in the shell 100, with the opening of the second accommodating box body 210 facing the second mounting port 120; an electronic control mainboard 220, which is arranged in the second accommodating box body 210 and in the up and down directions; and a second cover 230, which is fixed to the second accommodating box body 210 from the outside to the inside along the radial direction of the shell 100.

[0077] Remove the display panel from the outside of the shell 100, and then remove the second cover 230 from the second installation port 120, and then repair the electronic control motherboard 220 from the second installation port 120. This solution makes the repair process of the electronic control motherboard 220 (i.e., the process of inspecting the electronic control motherboard 220) simpler.

[0078] In some examples, as shown in Figure 3, the size (including length and width) of the second mounting port 120 is not less than the size (including length and width) of the second cover-mounted box cover 230. This is more conducive to removing the second cover-mounted box cover 230 from the second mounting port 120, and it is also possible to take out and install the second cover-mounted box cover 230 from the second mounting port 120. After the second cover-mounted box cover 230 is taken out from the second mounting port 120, it is more conducive to the maintenance of the electronic control main board 220. This solution makes the maintenance process of the electronic control main board 220 simpler.

[0079] In some exemplary embodiments, as shown in Figures 1 to 3, the head assembly further includes a DR module 600. The DR module 600 is located on the side of the wiring module 400 facing away from the relay module 300. This facilitates connection between the DR module 600 and the relay module 300 and reduces the overall height of the head assembly, resulting in a smaller heat pump water heater. The DR module 600 protrudes outward from the sidewall of the housing 100, facilitating access for maintenance.

[0080] In some examples, as shown in Figures 1 to 3, the size (including length and width) of the DR module 600 is no larger than the size (including length and width) of the wiring module 400, which makes it easier for the DR module 600 to be quickly installed on the wiring module 400.

[0081] It can be that the wiring module 400 is provided with a buckle position, and the DR module 600 is provided with a clip, and the clip is mounted on the buckle position, so that the DR module 600 is fixedly connected to the side of the wiring module 400 facing away from the relay module 300; or it can be that the wiring module 400 is provided with a screw hole, and the DR module 600 is provided with a through hole, and the screw passes through the through hole and is tightened in the screw hole, so that the DR module 600 is fixedly connected to the side of the wiring module 400 facing away from the relay module 300, etc.; all of the above can achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present application, and will not be repeated here, and should all fall within the scope of protection of the present application.

[0082] In some exemplary embodiments, as shown in Figure 2, the center angle formed by the projections of the center (i.e., geometric center) of the electric control module 200 and the center (i.e., geometric center) of the relay module 300 on the bottom wall of the shell 100 and the center (i.e., geometric center) of the bottom wall of the shell 100 is no more than 90 degrees. This facilitates smooth wiring of the electric control module 200, the display module 500, the relay module 300, the wiring module 400 and the DR module 600, and when the heat pump water heater is installed on the wall, the DR module 600 will not interfere with the wall.

[0083] An electric control box provided by a related technology has a height of 342 mm. After the electric control module 200 and the relay module 300 are designed and applied for, the height of the electric control module 200 is 312 mm (the height of the relay module 300 is less than the height of the electric control module 200), which is conducive to reducing the height of the shell 100. Moreover, the maximum temperature inside the electric control module 200 and the maximum temperature inside the relay module 300 are both lower than the maximum temperature inside the electric control box in the related technology. Therefore, the operating performance of the electric control module 200 and the relay module 300 are better and the service life is longer.

[0084] Another related technology provides an electric control box with a height of 456 mm. After the electric control module 200 and the relay module 300 are designed and applied for, the height of the electric control module 200 is 426 mm (the height of the relay module 300 is less than the height of the electric control module 200), which is beneficial to reducing the height of the shell 100. Moreover, the maximum temperature inside the electric control module 200 and the maximum temperature inside the relay module 300 are both lower than the maximum temperature inside the electric control box in the related technology. Therefore, the operating performance of the electric control module 200 and the relay module 300 are better and the service life is longer.

[0085] In some exemplary embodiments, referring to FIG. 5 , FIG. 6 and FIG. 8 , the electric control module includes a first housing 11 and a wire-passing structure 12 .

[0086] The first housing 11 includes a first box body 111 and a first box cover 112 covered on the first box body 111 . The first housing 11 further has a mounting opening 11 a .

[0087] In order to achieve a better sealing effect, the first box cover 112 and the first box body 111 generally need to be sealed together. For example, the first box cover 112 and the first box body 111 can be in direct sealing contact, and a sealing ring or other sealing member can also be set between the first box cover 112 and the first box body 111.

[0088] The first receiving box body includes a first box body 111, and the first cover includes a first cover 112. Alternatively, the second receiving box body includes the first box body 111, and the second cover includes the first cover 112, etc.; all of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of this application, so they will not be repeated here, and all should fall within the scope of protection of this application.

[0089] In some examples, referring to FIG. 7 , the first box cover 112 may be provided with a sealing groove 112 b , and the first box body 111 is inserted into the sealing groove 112 b so that the first box body 111 and the first box cover 112 are sealed and matched.

[0090] The portion of the first box body 111 in Figure 7 that is inserted into the sealing groove 112b is in sealing contact with the groove wall of the sealing groove 112b to achieve a sealed fit. In other examples, a sealing ring or other sealing member may also be provided in the sealing groove 112b, and the first box body 111 may be in contact with the sealing member to achieve a sealed fit between the first box body 111 and the first box cover 112.

[0091] In other examples, the first box body 111 may be provided with a sealing groove 112 b , and the first box cover 112 may be inserted into the sealing groove 112 b .

[0092] The mounting opening 11a in FIG6 is provided on the first box body 111 . In other examples, the mounting opening 11a may be provided on the first box cover 112 , or the mounting opening 11a may be provided on both the first box body 111 and the first box cover 112 .

[0093] The number of the mounting opening 11 a may be one, or may be plural.

[0094] The wire passing structure 12 is provided at the installation opening 11 a . It can be understood that when there are multiple installation openings 11 a , a wire passing structure 12 is provided at each installation opening 11 a .

[0095] Please refer to Figures 12 to 14. The wire-passing structure 12 includes a first sealing portion 121 having a first sealing opening 121a and a second sealing portion 122 having a second sealing opening 122a. The first sealing opening 121a and the second sealing opening 122a can both be restorably expanded. The second sealing portion 122 is arranged on the outside of the first sealing portion 121, and the first sealing opening 121a is connected to the second sealing opening 122a.

[0096] An electric control main board 220 is installed in the first housing 11 . The electric control main board 220 has components. The wire passing structure 12 is configured to allow a wire harness 20 electrically connected to the components (ie, the electric control main board 220 ) to pass through.

[0097] In some examples, the first sealing port 121a is in communication with the interior space of the first housing 11 , the second sealing port 122a is in communication with the exterior of the first housing 11 , and the wiring harness 20 is passed through the first sealing port 121a and the second sealing port 122a .

[0098] The wire passing structure 12 may be an integrally molded structure, for example, the wire passing structure 12 may be integrally molded by injection molding; or the wire passing structure 12 may be assembled from a first sealing portion 121 and a second sealing portion 122 that are separated from each other, for example, the first sealing portion 121 and the second sealing portion 122 may be assembled into the wire passing structure 12 by bonding.

[0099] The line-passing structure 12 may be provided with only one first sealing portion 121 and one second sealing portion 122, or may be provided with multiple first sealing portions 121 and multiple second sealing portions 122, and the first sealing portion 121 corresponds to the second sealing portion 122 one to one. For example, in FIG6 , part of the line-passing structure 12 is provided with only one first sealing portion 121 and one second sealing portion 122, and part of the line-passing structure 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 second sealing portions 122 are provided in one-to-one correspondence.

[0100] The first sealing opening 121a and the second sealing opening 122a are both capable of being restorably expanded, which means that the wiring harness 20 is inserted into the first sealing opening 121a and the second sealing opening 122a by expanding the first sealing opening 121a and the second sealing opening 122a. When the wiring harness 20 is taken out of the first sealing opening 121a and the second sealing opening 122a, the first sealing opening 121a and the second sealing opening 122a can be restored to their original state.

[0101] In order to facilitate the first sealing opening 121a and the second sealing opening 122a to be able to be restored to open, in some examples, the wire-passing structure 12 can be made of a material that can produce a certain elastic deformation, such as rubber, plastic, etc.

[0102] The width of the first sealing opening 121 a should be smaller than the diameter of the inserted wiring harness 20 . In some examples, referring to FIG. 13 , the first sealing opening 121 a may be in the shape of a slit.

[0103] Please refer to Figure 13. In order to ensure that the first sealing opening 121a can have a better sealing effect, the width dimension D1 of the first sealing opening 121a can 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 slit-shaped first sealing opening 121a can be greater than 0.3 mm and less than 0.8 mm.

[0104] To avoid the first sealing portion 121 affecting the sealing effect due to its thin thickness, in some examples, please refer to Figure 16, the thickness dimension H1 of the first sealing port 121a can 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 can be greater than 1 mm and less than 2 mm.

[0105] In some examples, the width of the second sealing opening 122a should also be smaller than the diameter of the inserted wiring harness 20. In some examples, referring to FIG. 12 , the second sealing opening 122a may be in the shape of a slit.

[0106] Please refer to Figure 12. To ensure that the second sealing opening 122a has a better sealing effect, the width dimension D2 of the second sealing opening 122a can be less than or equal to 0.8 mm. In some examples, the width dimension D2 of the slit-shaped second sealing opening 122a can be greater than 0.3 mm and less than or equal to 0.8 mm.

[0107] To avoid the second sealing portion 122 being too thin and affecting the sealing effect, in some examples, please refer to Figure 16, the thickness dimension H2 of the second sealing port 122a can 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 can be greater than 1 mm and less than 2 mm.

[0108] Another embodiment of the present application provides a heat pump water heater. Please refer to Figures 4 and 5. The heat pump water heater includes a water tank and a head assembly 1000 arranged on the water tank.

[0109] The electric control module and the relay module can be electrically connected to the motor, heating device, compressor, display panel and various sensors of the heat pump water heater through the wiring harness 20. The electric control module and the relay module are also electrically connected through the wiring harness 20.

[0110] It should be noted that the electronic control module described in the embodiment of the present application is not limited to being set in a heat pump water heater, and the electronic control module described in the embodiment of the present application can also be used in other electrical equipment.

[0111] In the prior art, the wiring harness on the electronic control module typically features a relatively large circular hole. The hole's diameter is larger than the diameter of the wiring harness, through which one or more wiring harnesses pass directly. These holes offer little sealing effect, allowing rainwater and other water to easily seep into the electronic control module through the hole, potentially short-circuiting components within the module.

[0112] The electric control module of the embodiment of the present application is provided with a wire-passing structure 12 having a first sealing portion 121 and a second sealing portion 122, wherein the first sealing portion 121 has a first sealing opening 121a, and the second sealing portion 122 has a second sealing opening 122a, and both the first sealing opening 121a and the second sealing opening 122a can be restored to open. The first sealing portion 121 is the main sealing structure on the wire-passing structure 12, and the second sealing portion 122 is provided on the outside of the first sealing portion 121 to increase the resistance to the flow of external air, block the impact of external water flow, and reduce the power of the water flow. In other words, the second sealing portion 122 plays a protective role for the first sealing portion 121. Since the wiring harness 20 is inserted into the first sealing opening 121a and the second sealing opening 122a by stretching the first sealing opening 121a and the second sealing opening 122a, after the wiring harness 20 is inserted into the first sealing opening 121a and the second sealing opening 122a, the side wall surface of the first sealing opening 121a and the side wall surface of the second sealing opening 122a will contact the wiring harness 20. The gap between the first sealing opening 121a and the wiring harness 20 and the gap between the second sealing opening 122a and the wiring harness 20 are relatively small, and it is difficult for external water such as rainwater to pass through the gap. Therefore, the first sealing opening 121a and the second sealing opening 122a can play a good sealing role. In other words, the wire-passing structure 12 of the embodiment of the present application can achieve at least two layers of sealing by providing the first sealing portion 121 and the second sealing portion 122. The first sealing opening 121a and the second sealing opening 122a that can be restorably stretched can also effectively block external water such as rainwater. The wire passing structure 12 can effectively prevent water such as rainwater from penetrating into the electronic control module through the wire passing structure 12, thereby improving the sealing performance of the electronic control module.

[0113] In one embodiment, referring to FIG6 , the electronic control module may further include a second housing 13. The second housing 13 includes a second body 131 disposed outside the first body 111 and a second cover 132 disposed outside the first cover 112. This is equivalent to the first housing 11 being disposed within the second housing 13. In other words, the electronic control module may include at least two layers of housing to enhance its fire and explosion resistance.

[0114] The materials of the first shell 11 and the second shell 13 can be the same or different. For example, the first shell 11 and the second shell 13 can both be plastic, both can be metal, or one of the first shell 11 and the second shell 13 can be plastic and the other can be metal.

[0115] Among them, the first accommodating box body includes a first box body 111 and a second box body 131, the first cover-mounted box lid includes a first box lid 112 and a second box lid 132, the first accommodating box body and the first cover-mounted box lid together include a first shell 11 and a second shell 13, the first shell 11 includes a first box body 111 and a first box lid 112, and the second shell 13 includes a second box body 131 and a second box lid 132. Or it can be that the second accommodating box body includes the first box body 111 and the second box body 131, the second cover-mounted box cover includes the first box cover 112 and the second box cover 132, the second accommodating box body and the second cover-mounted box cover together include the first shell 11 and the second shell 13, the first shell 11 includes the first box body 111 and the first box cover 112, and the second shell 13 includes the second box body 131 and the second box cover 132; or it can be that the shell of the electronic control module (including the first accommodating box body and the first cover-mounted box cover) and the shell of the relay module (including the second accommodating box body and the second cover-mounted box cover) have the same structure, both including the first box body 111, the first box cover 112, the second box body 131 and the second box cover 132, etc.; the above can all achieve the purpose of this application, and its purpose does not deviate from the design concept of this application, and will not be repeated here, and should all fall within the scope of protection of this application.

[0116] In order to achieve better fire prevention effect, plastic parts can be made of flame retardant plastic.

[0117] In order to facilitate processing and manufacturing, the metal parts can be sheet metal parts.

[0118] In some examples, the first housing 11 in FIG. 6 is a plastic component, and the second housing 13 is a metal component.

[0119] In related technology, one heat pump water heater uses R290 (propane) as a refrigerant. As a natural gas, R290 is more environmentally friendly, effectively mitigating the greenhouse effect and reducing atmospheric damage. However, R290 is flammable and explosive, and ignition could damage the heat pump water heater. Therefore, the electronic control module of this heat pump water heater must also have good fire and explosion resistance.

[0120] By setting the first shell 11 as a plastic part and the second shell 13 as a metal part, not only can the second shell 13 arranged on the outside of the first shell 11 be used for fire protection, but the first shell 11 can also be used to protect and insulate components, thereby better improving the fire and explosion resistance of the electronic control module.

[0121] In some examples, referring to Figures 6, 8 to 11, the outer surface of the first shell 11 can be provided with a water shield 11b having a wire-passing opening 11c, and the water shield 11b at least blocks a portion of the wire-passing structure 12, that is, the water shield 11b can only block a portion of the wire-passing structure 12, or can block the entire wire-passing structure 12.

[0122] The wire passage 11c is a passage for the wire harness 20 to pass through. The water shield 11b in Figure 10 is formed by opening a hole or notch in the water shield 11b. In other examples, the water shield 11b can be spaced apart from the first housing 11 to form the wire passage 11c.

[0123] The location of the cable opening 11c can be adjusted as needed. In some examples, see Figure 10 , when the electronic control module is in use, the cable opening 11c can be located on the bottom side of the water shield 11b. The use state refers to when the electronic control module is installed on an electrical device such as a heat pump water heater and is in normal use on the electrical device.

[0124] The wire passing opening 11 c is located at the bottom side of the water shield 11 b , which is equivalent to the wire harness 20 exiting from the bottom side of the water shield 11 b . This can better prevent water on the wire harness 20 from flowing along the wire harness 20 to the wire passing structure 12 .

[0125] The water shield 11b can shield the wire-passing structure 12 from water by shielding at least part of the structure of the wire-passing structure 12, thereby preventing water from flowing onto the wire-passing structure 12 as much as possible, thereby further improving the waterproof effect.

[0126] In some examples, referring to Figures 12 to 14, the first sealing opening 121a of the first sealing portion 121 and the second sealing opening 122a of the second sealing portion 122 can respectively extend from the first side of the wire-passing structure 12 to the opposite second side, and the end of the first sealing opening 121a close to the second side passes through the first sealing portion 121 to form a first wire-passing opening 121b, and the end of the second sealing opening 122a close to the second side passes through the second sealing portion 122 to form a second wire-passing opening 122b.

[0127] That is, the wire harness 20 can be inserted into the first sealing opening 121a and the second sealing opening 122a from the first wire passing opening 121b and the second wire passing opening 122b, thereby facilitating the insertion of the wire harness 20 into the first sealing opening 121a and the second sealing opening 122a. In addition, the first sealing opening 121a and the second sealing opening 122a extend from a first side of the wire passing structure 12 to an opposite second side, respectively, or the first sealing opening 121a and the second sealing opening 122a can be made longer in the extension direction to facilitate accommodating multiple wire harnesses 20.

[0128] In some examples, referring to Figures 12 and 13, the first sealing portion 121 can be provided with a first guide groove 121c in communication with the first wire-passing opening 121b. The first guide groove 121c is open on a side away from the first wire-passing opening 121b to form a first opening. The first guide groove 121c gradually expands from the first wire-passing opening 121b to the first opening. During the threading process, the wiring harness 20 enters the first guide groove 121c from the first opening and then moves along the first guide groove 121c to the first wire-passing opening 121b. In other words, the first guide groove 121c can guide the wiring harness 20 to the first wire-passing opening 121b, thereby improving the convenience of the wiring harness 20 being inserted into the first sealing opening 121a from the first wire-passing opening 121b.

[0129] Referring to Figure 12, the second sealing portion 122 can be provided with a second guide groove 122c in communication with the second wire opening 122b. The second guide groove 122c is open on the side facing away from the second wire opening 122b to form a second opening. The second guide groove 122c gradually expands from the second wire opening 122b to the second opening. During the threading process, the wiring harness 20 enters the second guide groove 122c from the second opening and then moves along the second guide groove 122c to the second wire opening 122b. The second guide groove 122c can guide the wiring harness 20 to the second wire opening 122b, thereby improving the convenience of the wiring harness 20 being inserted into the second sealing opening 122a from the second wire opening 122b.

[0130] The wire-passing structure 12 in FIG12 is provided with a first guide groove 121c and a second guide groove 122c. In other examples, the wire-passing structure 12 may be provided with only the first guide groove 121c without the second guide groove 122c. In other examples, the wire-passing structure 12 may be provided with only the second guide groove 122c without the first guide groove 121c.

[0131] In some examples, referring to Figures 6 and 15 , the mounting opening 11a can be provided on a sidewall of the first box body 111. For the wire-passing structure 12 having the first guide groove 121c, the first opening of the first guide groove 121c can face the first box cover 112. Further referring to Figure 15 , the edge of the first box cover 112 can be provided with a protrusion 112a protruding toward the first box body 111. The protrusion 112a extends into the first guide groove 121c and abuts against the first sealing portion 121.

[0132] Since the wiring harness 20 inserted into the first sealing opening 121a will stretch the first sealing opening 121a, by providing a protrusion 112a on the first box cover 112 and extending the protrusion 112a into the first guide groove 121c and abutting against the first sealing portion 121, it can not only effectively prevent the first wire-passing opening 121b from opening under the action of the wiring harness 20 and affecting the sealing effect, but also can play a closing role on the first wire-passing opening 121b to prevent the wiring harness 20 from escaping from the first wire-passing opening 121b.

[0133] In addition, it should be noted that since the second sealing portion 122 is arranged on the outside of the first sealing portion 121, and the first sealing portion 121 mainly plays a sealing role, even if the second wire-passing opening 122b is opened to a certain extent under the action of the wiring harness 20, it will basically not affect the sealing effect of the wire-passing structure 12, and after the protrusion 112a closes the first wire-passing opening 121b, it is difficult for the wiring harness 20 to escape from the second wire-passing opening 122b. Therefore, even if the second sealing portion 122 is provided with a 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. Of course, in some examples, the protrusion 112a can extend into the second guide groove 122c and abut against the second sealing portion 122.

[0134] In some examples, referring to FIG. 13 , a partial area of ​​the first sealing portion 121 on a side 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 a first wire-passing groove 121e that is respectively connected to the first sealing port 121a and the first wire-passing opening 121b. That is, the wiring harness 20 also passes through the first wire-passing groove 121e.

[0135] The rib 121d can improve the strength of the wire-passing structure 12 to better prevent the wire-passing structure 12 from being deformed.

[0136] In some examples, referring to Figures 13 and 15 , a buckle 121f may be provided on the side of the rib 121d facing away from the first wire-passing groove 121e, and the buckle 121f is engaged with the first housing 11. In other words, the wire-passing structure 12 can be fixed to the mounting opening 11a by engaging with the first housing 11, and the rib 121d also provides a suitable location for the buckle 121f.

[0137] In some examples, referring to Figures 14 and 16, a partial area of ​​the second sealing portion 122 on one side close to the first sealing portion 121 can be recessed in a direction away from the first sealing portion 121 to form a second wire groove 122d that is respectively connected to the first sealing port 121a, the second sealing port 122a and the second wire opening 122b.

[0138] The second wire channel 122d serves as a transitional space between the first sealing portion 121 and the second sealing portion 122, through which the wiring harness 20 passes. The second wire channel 122d serves to separate the first sealing opening 121a from the second sealing opening 122a, thereby preventing water that has infiltrated the second sealing opening 122a from flowing directly into the first sealing opening 121a.

[0139] In some examples, referring to Figures 14 and 16, the side of the second wire groove 122d opposite to the second wire opening 122b has a slot 122e that is connected to the interior of the second wire groove 122d, and the side of the second sealing portion 122 having the slot 122e is sealed with the first shell 11 to close the slot 122e.

[0140] In some examples, when the wire-passing structure 12 adopts certain processing methods, due to the processing methods, for example, when the wire-passing structure 12 is injection molded, due to the mold demolding, a notch 122e will inevitably be formed on the second wire-passing groove 122d, and the notch 122e will have a certain impact on the sealing of the wire-passing structure 12. Therefore, the side of the second sealing portion 122 having the notch 122e can be sealed with the first shell 11. For example, the side of the second sealing portion 122 having the notch 122e can be sealed with the first shell 11 to close the notch 122e.

[0141] In some examples, referring to FIG. 16 , for the wire-passing structure 12 having the water shield 11 b , the side of the second sealing portion 122 having the notch 122 e can be located inside the water shield 11 b and sealably cooperate with the water shield 11 b .

[0142] In some examples, referring to Figures 12 and 14 , the second sealing opening 122a can extend through the side of the second sealing portion 122 having the notch 122e, with the end of the second sealing opening 122a opposite the second wire opening 122b being the open end. In some examples, the second sealing portion 122 can be provided with at least one slit 122f that intersects the second sealing opening 122a.

[0143] The second sealing portion 122 in FIG. 12 and FIG. 14 is provided with two slits 122 f . In other examples, the second sealing portion 122 may be provided with one slit 122 f or more than two slits 122 f .

[0144] The second sealing opening 122a passes through the side of the second sealing portion 122 having the notch 122e, also for the convenience of processing and manufacturing. However, since the wiring harness 20 inserted into the second sealing opening 122a will stretch the second sealing opening 122a, the slit 122f intersecting with the second sealing opening 122a is provided to better prevent the wiring harness 20 from stretching the second sealing opening 122a too much at the end opposite to the second wire opening 122b, thereby affecting the sealing performance.

[0145] It is understandable that, under the premise of meeting processing requirements, the second sealing opening 122a may not penetrate the side of the second sealing portion 122 having the notch 122e. Similarly, the side of the second wire groove 122d opposite to the second wire opening 122b may not be provided with the notch 122e.

[0146] In some examples, referring to Figures 8 to 11, the water shield 11b can be provided with a first wall 11b1 and a second wall 11b2, wherein the first wall 11b1 and the second wall 11b2 define a water retaining groove 11e having an escape opening 11d and a wire passing opening 11c, wherein the first wall 11b1 and the escape opening 11d are respectively located on opposite sides of the second wall 11b2 along a first direction. At least a first side of the wire passing structure 12 is located within the water retaining 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 the side of the water retaining groove 11e provided with the escape opening 11d, and the escape opening 11d is configured to avoid the wiring harness 20 when the wiring harness 20 is engaged with the first sealing opening 121a and the second sealing opening 122a.

[0147] Two wire-passing structures 12 are provided in the water retaining groove 11 e in FIG8 . In other examples, one wire-passing structure 12 may be provided in the water retaining groove 11 e , or more than two wire-passing structures 12 may be provided.

[0148] In addition, when the electronic control module is in use, the outer surface of the first wall 11b1 can serve as the water-facing surface, that is, rainwater and other water flows mainly flush toward the outer surface of the first wall 11b1, thereby enabling the water shield 11b to have a better water-blocking effect.

[0149] Please continue to refer to Figures 8 and 10. The wire opening 11c can be located on one side of the second wall 11b2 along the second direction. When the electronic control module is in use, the wire opening 11c is located on the bottom side of the second wall 11b2, wherein the second direction intersects with the first direction.

[0150] The second direction in FIG. 10 is orthogonal to (ie, perpendicular to) the first direction in FIG. 11 . In other examples, the second direction intersects the first direction at an angle.

[0151] 10 , in order to better prevent water from flowing back along the wire harness 20 to the second sealing opening 122 a , the shortest distance L1 between the wire opening 11 c and the second sealing opening 122 a along the height direction may be greater than or equal to 10 mm.

[0152] The height direction described herein refers to the height direction of the electronic control module when in use. When at least two wire-passing structures 12 are provided in the water retaining groove 11e, the shortest distance L1 along the height direction between the wire-passing opening 11c and the second sealing opening 122a refers to the height distance between the second sealing opening 122a on the wire-passing structure 12 closest to the wire-passing opening 11c as shown in FIG10 and the wire-passing opening 11c. When only one wire-passing structure 12 is provided in the water retaining groove 11e, the shortest distance L1 along the height direction between the wire-passing opening 11c and the second sealing opening 122a refers to the height distance between the second sealing opening 122a on the wire-passing structure 12 and the wire-passing opening 11c.

[0153] Please refer to FIG. 11 . In order to achieve a better water-blocking effect, the dimension L2 of the second wall 11 b 2 along the first direction may be greater than or equal to 15 mm.

[0154] In some examples, referring to Figures 6, 17 and 18, the electric control module can be provided with a capacitor 14 and a sealing sleeve 15, the first box body 111 is provided with a mounting tube 111a, the first end of the mounting tube 111a protrudes from the outer surface of the first box body 111, the capacitor 14 is passed through the mounting tube, and the sealing sleeve 15 is sealedly mounted on the first end of the mounting tube 111a to close the first end.

[0155] The sealing sleeve 15 not only protects the capacitor 14 but also prevents moisture from entering the interior of the electronic control module.

[0156] In some examples, referring to FIG. 17 , a vent hole 14 a may be provided on the sealing sleeve 15 . When the sealing sleeve 15 is installed, air is exhausted through the vent hole 14 a , which facilitates the installation of the sealing sleeve 15 .

[0157] Please refer to Figure 17. For the electronic control module provided with a second shell 13, the second box body 131 can be provided with a through hole 131a, and the mounting tube 111a is passed through the through hole 131a. The first box body 111 can be fitted with the part of the second box body 131 located around the through hole 131a to minimize moisture from entering the interior of the electronic control module from the junction of the through hole 131a and the mounting tube 111a.

[0158] In some examples, as shown in Figures 17 and 18, a portion of the area between the first body 111 and the second body 131 can be spaced apart to form a separation space 131b. A plurality of reinforcing ribs 111b can be provided on a side of the first body 111 adjacent to the second body 131. The reinforcing ribs 111b are located within the separation space 131b. The reinforcing ribs 111b are primarily used to reinforce the first body 111, thereby increasing its strength.

[0159] In some examples, please refer to Figure 17, when the electronic control module is in use, at least one reinforcing rib 111b is located 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 to form a drainage gap 111c at the interval.

[0160] When water vapor seeps into the junction of the through hole 131a and the mounting tube 111a, the water flow formed by the accumulation of water vapor will flow into the spacing space 131b on the 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 the water flowing into the spacing space 131b can be discharged from the drainage gap 111c to minimize the accumulation of water at the reinforcing rib 111b.

[0161] The heat pump water heater (not shown in the figures) proposed in the embodiment of the present invention includes the head assembly described in any of the above embodiments.

[0162] This heat pump water heater has all the advantages of the head assembly provided by any of the above embodiments, which will not be described in detail here.

[0163] To sum up, according to the technical solution proposed in the embodiment of the present invention, the relay module is independent of the electronic control module, so that the height of the electronic control module can be made smaller than the height of the electronic control box in the related art, and the height of the relay module can also be made smaller than the height of the electronic control box in the related art, and the relay module and the electronic control module are spaced apart in the circumferential direction of the shell, so there is no need to increase the height of the shell; in addition, the heat generation of the electronic control module is reduced compared with the heat generation of the electronic control box in the related art, and the heat generation of the relay module is also reduced compared with the heat generation of the electronic control box in the related art, so that the temperature inside the electronic control module is lower in a high-temperature environment, and the temperature inside the relay module is also lower in a high-temperature environment, so the relay module and the electronic control module have better operating performance and longer service life in a high-temperature environment, and the corresponding head assembly has better operating performance and longer service life in a high-temperature environment.

[0164] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0165] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0166] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0167] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0168] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0169] Although the embodiments disclosed herein are as described above, the contents described are merely embodiments for facilitating understanding of the present invention and are not intended to limit the present invention. It should be noted that the above embodiments or implementations are merely illustrative and not restrictive. Therefore, the present disclosure is not limited to the contents specifically shown and described herein. Various modifications, substitutions, or omissions may be made to the forms and details of the implementations without departing from the scope of the present disclosure.

Claims

1. A head assembly for a heat pump water heater, comprising: case; An electric control module is disposed in the housing; and The relay module is arranged in the housing and is spaced apart from the electric control module in the circumferential direction of the housing.

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

3. The head assembly according to claim 2, wherein: The wiring module comprises: The junction box has a first mounting opening on the side wall of the shell, and the junction box is fixedly connected to the first mounting opening from outside to inside along the radial direction of the shell.

4. The head assembly according to claim 3, wherein: The relay module comprises: A first box body, disposed in the housing, wherein an opening of the first box body faces the first installation opening; A relay main board is disposed in the first box body; and The first box cover is fixedly connected to the first box body from outside to inside along the radial direction of the shell.

5. The head assembly according to claim 4, wherein: The size of the first installation opening is not less than the size of the first box cover.

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

7. The head assembly according to claim 6, wherein: The display module comprises: The display panel has a second mounting opening on the side wall of the shell, and the display panel is fixedly connected to the second mounting opening from outside to inside along the radial direction of the shell.

8. The head assembly according to claim 7, wherein: The electronic control module comprises: A second box body is disposed in the housing, and an opening of the second box body faces the second installation opening; An electric control mainboard is disposed in the second box body; and The second box cover is fixedly connected to the second box body from outside to inside along the radial direction of the shell.

9. The head assembly according to claim 8, wherein: The size of the second installation opening is not less than the size of the second box cover.

10. The head assembly according to any one of claims 2 to 5, further comprising: The DR module is arranged on the side of the wiring module facing away from the relay module, and the size of the DR module is not greater than that of the wiring module.

11. The head assembly according to any one of claims 1 to 5, wherein: A central angle formed by projections of the center of the electric control module and the center of the relay module on the bottom wall of the housing and the center of the bottom wall of the housing is not greater than 90 degrees.

12. The head assembly according to claim 1, wherein: The electric control module or the relay module comprises: A first shell having a mounting opening, wherein the first shell comprises a first box body and a first box cover disposed on the first box body; A wire-passing structure is arranged at the installation port, and the wire-passing structure includes a first sealing portion with a first sealing port and a second sealing portion with a second sealing port. Both the first sealing port and the second sealing port can be restorably expanded, and the second sealing portion is arranged on the outer side of the first sealing portion. The first sealing port is connected to the second sealing port.

13. The head assembly according to claim 12, wherein: The outer surface of the first shell is provided with a water shield with a wire passing opening, and the water shield at least shields a part of the wire passing structure.

14. The head assembly according to claim 13, wherein: The first sealing port and the second sealing port extend respectively from a first side of the wire-passing structure to a second side corresponding to the first side, and an end of the first sealing port close to the second side passes through the first sealing portion to form a first wire-passing opening, and an end of the second sealing port close to the second side passes through the second sealing portion to form a second wire-passing opening.

15. The head assembly according to claim 14, wherein: The first sealing portion further comprises a first guide groove connected to the first wire-passing opening, the first guide groove is open at a side away from the first wire-passing opening to form a first opening, and the first guide groove gradually expands from the first wire-passing opening to the first opening; The second sealing portion also has a second guide groove connected to the second wire opening, and the second guide groove is open on a side away from the second wire opening to form a second opening. The second guide groove gradually expands from the second wire opening to the second opening.

16. The head assembly according to claim 15, wherein: The installation opening is arranged on the side wall of the first box body, the first opening faces the first box cover, the edge of the first box cover has a protrusion protruding toward the first box body, the protrusion extends into the first guide groove and abuts against the first sealing portion.

17. The head assembly according to any one of claims 14 to 16, wherein: A partial area of ​​the first sealing portion on a side 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 surrounds a first wire passing groove respectively connected to the first sealing port and the first wire passing opening.

18. The head assembly according to claim 17, wherein: The convex rib has a buckle on the side away from the first wire passing groove, and the buckle is engaged with the first shell.

19. The head assembly according to any one of claims 14 to 16, wherein: A partial area of ​​the second sealing portion on a side close to the first sealing portion is recessed in a direction away from the first sealing portion to form a second wire passing groove respectively connected to the first sealing port, the second sealing port and the second wire passing opening.

20. The head assembly of claim 19, wherein: The side of the second wire passing groove opposite to the second wire passing opening has a notch communicated with the second wire passing groove, and the side of the second sealing portion having the notch is sealed with the first shell to close the notch.

21. The head assembly of claim 20, wherein: The outer surface of the first shell is provided with a water shield with a wire passing opening, and the water shield at least shields a part of the wire passing structure. The second sealing part has a side of the notch located in the water shield and sealed with the water shield.

22. The head assembly of claim 20, wherein: The second sealing opening passes through a side of the second sealing portion having the notch, and the second sealing portion further has at least one slit intersecting with the second sealing opening.

23. The head assembly of claim 14, wherein: The water retaining cover includes a first wall body and a second wall body, wherein the first wall body and the second wall body define a water retaining groove having an avoidance opening and the passing line opening, wherein the first wall body and the avoidance opening are respectively located on two opposite sides of the second wall body along a first direction; at least the first side of the passing line structure is located in the water retaining groove and faces the first wall body.

24. The head assembly of claim 23, wherein: The wire passing opening is located on one side of the second wall along the second direction, and when the head assembly is in use, the wire passing opening is located on the bottom side of the second wall, wherein the second direction intersects with the first direction.

25. The head assembly according to any one of claims 12 to 16, wherein: One of the first box body and the first box cover has a sealing groove, and the other of the first box body and the first box cover is inserted into the sealing groove so that the first box body and the first box cover are sealed and matched.

26. The head assembly according to any one of claims 12 to 16, wherein: The head assembly also includes a second shell, which includes a second box body arranged outside the first box body and a second box cover arranged outside the first box cover.

27. The head assembly according to any one of claims 12 to 16, wherein: The head assembly includes a capacitor and a sealing sleeve. The first box body is provided with a mounting tube. The first end of the mounting tube protrudes from the outer surface of the first box body. The capacitor is inserted into the mounting tube. The sealing sleeve is sealingly mounted on the first end of the mounting tube to close the first end.

28. The head assembly of claim 27, wherein: The head assembly also includes a second shell, which includes a second box body arranged on the outside of the first box body and having a through hole, the mounting tube is passed through the through hole, and the first box body and the second box body are fitted at the parts located around the through hole.

29. The head assembly of claim 28, wherein: A partial area between the first box body and the second box body is spaced apart to form a spacing space, and a side of the first box body close to the second box body has a plurality of reinforcing ribs located in the spacing space; wherein, when the head assembly is in use, at least one of the reinforcing ribs is located on the 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 to form a drainage gap at the spacing.

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

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