Heat pump water heater

Abstract

The embodiment of the invention provides a heat pump water heater. The heat pump water heater comprises a water tank assembly, a magnesium rod assembly and a machine head assembly. The water tank assembly comprises a shell and an inner container arranged in the shell. A mounting opening is formed in the top, in the height direction of the heat pump water heater, of the shell. The magnesium rod assembly comprises a magnesium rod and a mounting base arranged at one end of the magnesium rod, the magnesium rod extends into the inner container from the mounting opening, and the mounting base is exposed out of the mounting opening; the machine head assembly comprises an electric control box, a housing and a water pan with an avoiding hole, the electric control box comprises a first box body, and the first box body is provided with an access hole penetrating through the first box body; the water pan is arranged at the top of the shell, the avoiding hole avoids the mounting opening, and the housing covers the side, away from the shell, of the water pan; the electric control box is arranged in the housing and located on the upper side of the magnesium rod assembly, and the access hole faces the water pan. According to the heat pump water heater, the magnesium rod assembly can be conveniently overhauled.

Description

Technical Field

[0001] The present application relates to the technical field of heat pumps, and in particular to a heat pump water heater. Background Art

[0002] Heat pump water heaters are generally divided into split type and integral type. The integral heat pump water heater has a head assembly arranged on a water tank assembly. The head assembly is provided with a cover having an air inlet and an air outlet. The cover is provided with components such as a heat exchanger, a compressor, and an electronic control box.

[0003] The head assembly is generally arranged at the top of the water tank assembly. At the same time, in order to delay the corrosion of the inner tank in the water tank assembly, a magnesium rod assembly is generally inserted into the inner tank. However, in the related art, there is an integrated heat pump water heater that can only insert the magnesium rod assembly into the inner tank from the top of the water tank assembly according to relevant requirements. Since the head assembly is also arranged at the top of the water tank assembly, the setting position of the electric control box blocks the magnesium rod assembly. Therefore, during the maintenance of the magnesium rod assembly, the maintenance personnel must remove the entire electric control box after disassembling the cover to take out the magnesium rod assembly, which is not convenient for the maintenance of the magnesium rod assembly. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide a heat pump water heater that can facilitate the maintenance of the magnesium rod assembly.

[0005] To achieve the above object, the present application provides a heat pump water heater, comprising:

[0006] A water tank assembly, the water tank assembly comprising an outer shell and an inner tank disposed in the outer shell, wherein the outer shell has a mounting opening at the top along the height direction of the heat pump water heater;

[0007] A magnesium rod assembly, the magnesium rod assembly comprising a magnesium rod and a mounting seat disposed at one end of the magnesium rod, the magnesium rod extending into the inner tank from the mounting opening, and the mounting seat exposed at the mounting opening;

[0008] A machine head assembly, the machine head assembly includes an electric control box, a cover shell and a water receiving tray with an avoidance hole, the electric control box includes a first box body, the first box body has an inspection port penetrating the first box body; the water receiving tray is arranged on the top of the outer shell, the avoidance hole avoids the installation port, and the cover shell is arranged on the side of the water receiving tray away from the outer shell; the electric control box is arranged in the cover shell and is located on the upper side of the magnesium rod assembly, and the inspection port faces the water receiving tray.

[0009] In one embodiment, on a projection plane perpendicular to the height direction, the projection of the mounting seat is located outside the projection area of ​​the electric control box, or at least a portion of the projection of the mounting seat is located within the projection range of the electric control box.

[0010] In one embodiment, on a projection plane perpendicular to the height direction, a projection of the mounting seat and a projection of the inspection opening are staggered or at least partially overlapped.

[0011] In one embodiment, the projection of the mounting seat is staggered from the projection of the inspection port, and the minimum distance between the projection of the mounting seat and the projection of the inspection port is greater than 0 and less than or equal to 50 mm.

[0012] In one embodiment, the cover shell includes a shell body and a shell cover detachably connected to the shell body, and the shell cover is located on a side of the shell body away from the water receiving tray.

[0013] In one embodiment, the head assembly includes a heat exchanger and a compressor disposed in the housing, the compressor and the avoidance hole are located on the same side of the heat exchanger, and the electric control box is disposed on the upper side of the compressor.

[0014] In one embodiment, the head assembly includes a support frame and a wind wheel bracket, the support frame is arranged on a side of the heat exchanger close to the compressor, the wind wheel bracket is arranged on a side of the heat exchanger away from the compressor, and the first box body is respectively connected to the support frame and the wind wheel bracket.

[0015] In one embodiment, the electric control box includes a second box body, and the second box body is openably and closably arranged on the first box body to avoid or cover the inspection port by opening and closing.

[0016] In one embodiment, the second box body is detachably connected to the first box body.

[0017] In one embodiment, the electric control box includes an electric control board and a heat sink, the electric control board is arranged on a side of the second box body close to the first box body, and the heat sink is arranged on a side of the electric control board close to the first box body. When the second box body is in a closed state, the heat sink is passed through the inspection port.

[0018] In one embodiment, the heat sink is sealed with the first box body in a circumferential direction, wherein the first box body includes a first side wall having a mounting groove, the first side wall is located on a side of the inspection port along a first direction of the electrical control box, and the heat sink is located on a side of the electrical control board along the first direction close to the first side wall; the electrical control box also includes a first seal arranged in the mounting groove, and when the first box body is in a closed state, the first seal is in sealing contact with the heat sink.

[0019] In one embodiment, the first sealing member includes a mounting portion and a sealing portion located on one side of the mounting portion, the mounting portion is disposed in the mounting groove, and the sealing portion is in sealing contact with the heat sink;

[0020] The area of ​​the cross section of the sealing portion perpendicular to the first direction gradually decreases in a direction away from the mounting portion; and / or,

[0021] A first step surface located at the mounting portion is formed at the junction of the mounting portion and the sealing portion, and the mounting groove passes through the first side wall; the mounting groove includes a first sub-groove and a second sub-groove, the second sub-groove is located on the side of the first sub-groove away from the heat sink, and a second step surface facing the first sub-groove is formed at the junction of the second sub-groove and the first sub-groove, the mounting portion is arranged in the first sub-groove, the first step surface is abutted against the second step surface, and the sealing portion is passed through the second sub-groove.

[0022] In one embodiment, the first box body includes a first shell and a second shell having the first side wall, and the second shell is arranged in the first shell; and / or,

[0023] The heat sink includes a heat sink body, which includes a connecting portion and a heat sink located on a side of the connecting portion facing away from the electric control board. The projections of the connecting portion and the heat sink on the electric control board are respectively a first projection and a second projection. The outer contour of the first projection on a side close to the first sealing member is located within the projection range of the second projection. The first sealing member is in sealing contact with the connecting portion.

[0024] In one embodiment, the heat sink comprises a heat sink body and a boss, a side of the heat sink body close to the first seal is a first side of the heat sink body along the circumferential direction, the boss is arranged on the outer peripheral side of the heat sink body along the circumferential direction and avoids the first side, and the first seal is in sealing contact with the first side of the heat sink body;

[0025] The first box body is in sealing contact with a side of the boss facing away from the electric control board; or,

[0026] The electric control box comprises a second sealing member, which is arranged on a side of the boss away from the electric control board and is in sealing contact with the boss and the first box body respectively.

[0027] In one embodiment, the electric control board has a first length dimension along the first direction and a second length dimension along a second direction perpendicular to the first direction, and the first length dimension is greater than the second length dimension.

[0028] An embodiment of the present application provides a heat pump water heater, in which an electrical control box within a head assembly of the heat pump water heater is provided with a first box body having an inspection port, through which maintenance personnel can disassemble and assemble the magnesium rod assembly without removing the entire electrical control box, thereby improving the convenience of maintenance of the magnesium rod assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a heat pump water heater according to an embodiment of the present application;

[0030] Figure 2 for Figure 1 AA section view;

[0031] Figure 3 for Figure 2 A partial enlarged view of point B in the middle;

[0032] Figure 4 for Figure 2 A partial structural schematic diagram of the housing shown in FIG. 1 , and a magnesium rod assembly is also shown in the figure;

[0033] Figure 5 for Figure 1 An exploded view of the nose assembly is shown, with the housing omitted;

[0034] Figure 6 for Figure 1 The internal structure diagram of the head assembly is shown, in which the cover of the housing is omitted;

[0035] Figure 7 for Figure 1 The structural schematic diagram of the heat pump water heater shown in the figure, the second box body in the figure is in an open state;

[0036] Figure 8 for Figure 7 CC section view;

[0037] Fig. 9 for Figure 2 Schematic diagram of the removal process of the magnesium rod assembly shown;

[0038] Fig.10 for Fig. 9 DD cross-sectional view;

[0039] Fig.11 An exploded view of another electric control box according to an embodiment of the present application;

[0040] Fig.12 for Fig.11 A partial enlarged view of point E in the middle;

[0041] Fig.13 for Fig.12 A schematic structural diagram of the first sealing member shown;

[0042] Fig.14 for Fig.11 The structural schematic diagram of the electric control box shown;

[0043] Fig.15 for Fig.14 FF cross-sectional view;

[0044] Fig.16 for Fig.15 A partial enlarged view of the H in the middle;

[0045] Fig.17 for Fig.14 GG cross-sectional view;

[0046] Fig.18 for Fig.17 A partial enlarged view of point I in the middle.

[0047] Description of Reference Numerals

[0048] 10, water tank assembly; 11, shell; 11a, installation port; 12, liner; 20, magnesium rod assembly; 21, magnesium rod; 22, mounting seat; 30, head assembly; 31, electric control box; 311, first box body; 311a, inspection port; 3111, first shell; 3112, second shell; 31121, first side wall; 31121a, installation groove; 31121a1, first sub-groove; 31121a2, second sub-groove; 31121b, second step surface; 312, second box body; 31121a, installation slot; 31121a1, first sub-groove; 31121a2, second sub-groove; 31121b, second step surface; 312, second box body; 31121a, installation slot; 31121a2, second sub-groove; 31121b, second step surface; 3112, second box body; 31121a, installation slot; 31121a1, first sub-groove; 31121a2, second sub-groove; 31121b, second step surface; 31 ... 13. Electric control board; 314. Heat sink; 3141. Heat sink body; 31411. Connecting part; 31412. Heat sink; 3142. Boss; 315. First sealing part; 3151. Mounting part; 3151a. First step surface; 3152. Sealing part; 32. Cover; 32a. Air inlet; 32b. Air outlet; 321. Shell; 322. Shell cover; 33. Water tray; 33a. Avoidance hole; 34. Heat exchanger; 35. Compressor; 36. Support frame; 37. Wind wheel bracket. DETAILED DESCRIPTION

[0049] In the description of the embodiments of the present application, it should be noted that the term "height direction" is based on the attached Figure 1 The orientation or position relationship shown in the figure, "first direction" and "second direction" are based on the attached Figure 6 These directional terms are only used to facilitate the description of the embodiments of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0050] The present application embodiment provides a heat pump water heater. Figures 1 to 6The heat pump water heater includes a water tank assembly 10, a magnesium rod assembly 20 and a head assembly 30.

[0051] The water tank assembly 10 includes an outer shell 11 and an inner tank 12 disposed in the outer shell 11, and the inner tank 12 is used to store domestic water. The outer shell 11 has a mounting opening 11a at the top along the height direction of the heat pump water heater. The magnesium rod assembly 20 includes a magnesium rod 21 and a mounting seat 22 disposed at one end of the magnesium rod 21, the magnesium rod 21 extends into the inner tank 12 from the mounting opening 11a, and the mounting seat 22 is exposed at the mounting opening 11a.

[0052] The mounting seat 22 is used for mounting the magnesium rod 21 and also for connecting the magnesium rod assembly 20 .

[0053] The magnesium rod 21 is used to protect the inner tank 12 from corrosion.

[0054] The magnesium rod 21 extends into the inner container 12 from the mounting opening 11a, that is, the magnesium rod 21 can be placed into the inner container 12 from the mounting opening 11a, and can also be taken out from the mounting opening 11a. It can be understood that the inner container 12 is provided with a through hole connected to the mounting opening 11a, and the magnesium rod 21 extends into the inner container 12 from the through hole.

[0055] The installation seat 22 is exposed at the installation opening 11a, which means that the installation seat 22 can be seen at the installation opening 11a. The installation seat 22 can be located in the installation opening 11a, or can protrude from the installation opening 11a.

[0056] Please continue reading Figures 1 to 6 The head assembly 30 includes an electric control box 31, a cover 32, and a water receiving tray 33 having an avoidance hole 33a. The electric control box 31 includes a first box body 311, and the first box body 311 has an inspection port 311a that penetrates the first box body 311. The water receiving tray 33 is arranged on the top of the housing 11, and the avoidance hole 33a avoids the installation port 11a. The cover 32 is arranged on the side of the water receiving tray 33 away from the housing 11; the electric control box 31 is arranged in the cover 32 and is located on the upper side of the magnesium rod assembly 20, and the inspection port 311a faces the water receiving tray 33.

[0057] Specifically, the head assembly 30 is installed on the top of the water tank assembly 10, and the cover 32 has an air inlet 32a and an air outlet 32b. An installation space connected to the air inlet 32a and the air outlet 32b is set between the cover 32 and the water receiving tray 33. In addition to the electronic control box 31, the installation space also includes components such as a heat exchanger 34, a compressor 35, and a wind wheel.

[0058] The heat exchanger 34 can heat the domestic water in the inner tank 12 into hot water by exchanging heat with the water tank heat exchanger disposed in the outer shell 11 of the water tank assembly 10 .

[0059] The water receiving pan 33 is used to receive condensed water dripping from the heat exchanger 34. The avoidance hole 33a avoids the installation opening 11a, which means that the installation opening 11a is exposed at the avoidance hole 33a, so that the mounting seat 22 of the magnesium rod assembly 20 can be seen on the side of the water receiving pan 33 away from the water tank assembly 10.

[0060] It is understandable that the avoidance hole 33a is only for avoiding the installation opening 11a, and its arrangement needs to prevent the condensed water in the water receiving tray 33 from seeping out from the avoidance hole 33a as much as possible. Figure 3 and Figure 5 A portion of the water receiving tray 33 may protrude in a direction away from the water tank assembly 10 to form a raised portion, and the avoidance hole 33a may be disposed at the raised portion. In other embodiments, the avoidance hole 33a may also be separated by a water retaining edge disposed around the avoidance hole 33a.

[0061] The electric control box 31 is provided with an electric control board 313 and related components for realizing the electric control of the heat pump water heater.

[0062] See also Fig.10 The inspection port 311a on the first box body 311 is used for disassembling and assembling the magnesium rod assembly 20. That is to say, the maintenance personnel's hand can pass through the inspection port 311a and grab the mounting seat 22 of the magnesium rod assembly 20 to take the magnesium rod assembly 20 out of the inspection port 311a. Similarly, when installing the magnesium rod assembly 20, the magnesium rod assembly 20 also passes through the inspection port 311a and then is inserted into the inner tank 12 from the mounting port 11a.

[0063] See also Figure 1 and Figure 2 The housing 32 includes a housing body 321 and a housing cover 322. The housing cover 322 is located on a side of the housing body 321 away from the water receiving tray 33. Figure 1 and Figure 2 The shell cover 322 is detachably connected to the shell body 321. During the maintenance process, the maintenance personnel only need to disassemble the shell cover 322 alone without disassembling the shell body 321. In other implementations, if the shell cover 322 is fixedly connected to the shell body 321, the maintenance personnel need to disassemble the entire cover 32.

[0064] Please continue reading Figure 5 , Figure 5 The electric control box 31 shown in the figure is also provided with a second box body 312, which is openably provided on the first box body 311, so as to avoid or block the inspection port 311a by opening and closing. That is to say, after the cover 32 is disassembled, the second box body 312 blocks the inspection port 311a, and the maintenance personnel cannot see the inspection port 311a. Figures 7 to 10The maintenance personnel can see the inspection port 311 a only after opening the second box body 312 , which is equivalent to taking the magnesium rod assembly 20 out of the inspection port 311 a only after the second box body 312 is opened.

[0065] In other embodiments, the electric control box 31 may not be provided with the second box body 312 capable of shielding the inspection port 311 a , that is, after the cover shell 32 is disassembled, the maintenance personnel can directly see the inspection port 311 a .

[0066] Please continue reading Figure 2 , Figure 5 , Figure 8 and Fig.10 The electric control box 31 is arranged in the cover shell 32 and is located on the upper side of the magnesium rod assembly 20. The inspection port 311a faces the water receiving tray 33, which means that the relative position of the magnesium rod assembly 20 and the electric control box 31 meets the disassembly and assembly requirements of the maintenance personnel to disassemble and assemble the magnesium rod assembly 20 from the side of the inspection port 311a away from the water receiving tray 33.

[0067] The specific manner in which the electric control box 31 is arranged on the upper side of the magnesium rod assembly 20 is not limited. For example, please refer to Figure 2 and 5 The compressor 35 and the avoidance hole 33 a may be located on the same side of the heat exchanger 34 , and the electric control box 31 may be disposed on the upper side of the compressor 35 , that is, the electric control box 31 may be disposed between the compressor 35 and the shell cover 322 of the housing 32 .

[0068] Please continue reading Figure 2 and 5 The head assembly 30 may be provided with a support frame 36 and a wind wheel bracket 37, the wind wheel bracket 37 is used to install the wind wheel, the support frame 36 is provided on the side of the heat exchanger 34 close to the compressor 35, the wind wheel bracket 37 is provided on the side of the heat exchanger 34 away from the compressor 35, and the first box body 311 may be connected to the support frame 36 and the wind wheel bracket 37 respectively. In other words, the support frame 36 and the wind wheel bracket 37 may be used to support the electric control box 31.

[0069] Under the premise of meeting the above-mentioned disassembly and assembly requirements, there may be various relative positions of the mounting seat 22 and the electric control box 31 .

[0070] For example, on the projection plane perpendicular to the height direction, at least part of the projection of the mounting seat 22 may be located within the projection area of ​​the electric control box 31, that is, the projection of the mounting seat 22 may be entirely located within the projection area of ​​the electric control box 31. For the electric control box 31 having the second box body 312, after the cover 32 is disassembled, the maintenance personnel cannot see the mounting seat 22 from the side of the electric control box 31 away from the water receiving tray 33 (i.e., the mounting seat 22 is not visible from the side of the electric control box 31 away from the water receiving tray 33, at least before the second box body 312 is opened. Figure 6The projection of the mounting seat 22 may also partially overlap with the projection of the electric control box 31, that is, when looking down from the side of the electric control box 31 away from the water receiving tray 33, a part of the mounting seat 22 is located outside the electric control box 31, and if the part of the mounting seat 22 located outside the electric control box 31 is not blocked by other components or structures in the head assembly 30, then after the cover 32 is disassembled, the maintenance personnel can see the part of the mounting seat 22 located outside the electric control box 31 from the side of the electric control box 31 away from the water receiving tray 33.

[0071] Exemplarily, the projection of the mounting seat 22 may also be located outside the projection area of ​​the electrical control box 31, that is, if it is not blocked by other components or structures in the head assembly 30, then after the cover 32 is disassembled, the maintenance personnel can see the entire mounting seat 22 from the side of the electrical control box 31 away from the water tray 33.

[0072] In addition, there may be various relative positions of the mounting seat 22 and the inspection opening 311 a , as long as the maintenance personnel can grasp the mounting seat 22 of the magnesium rod assembly 20 after passing through the inspection opening 311 a .

[0073] Exemplarily, on the projection plane perpendicular to the height direction, the projection of the mounting seat 22 may at least partially overlap with the projection of the inspection port 311a, that is, the projection of the mounting seat 22 may overlap with the projection of the inspection port 311a, that is, the entire mounting seat 22 is located directly below the inspection port 311a, and the maintenance personnel can see the entire mounting seat 22 from the inspection port 311a, and the magnesium rod assembly 20 can be disassembled and assembled along the height direction, or, the projection of the mounting seat 22 may also partially overlap with the projection of the inspection port 311a, that is, only a portion of the mounting seat 22 is located directly below the inspection port 311a, and the maintenance personnel can see the portion of the mounting seat 22 exposed at the inspection port 311a from the inspection port 311a, and the magnesium rod assembly 20 can be disassembled and assembled by tilting relative to the height direction.

[0074] For example, on the projection plane perpendicular to the height direction, the projection of the mounting seat 22 may also be staggered with the projection of the inspection port 311a, that is, the mounting seat 22 is not arranged directly below the inspection port 311a, and the maintenance personnel may be able to see the mounting seat 22 from the inspection port 311a (for example, the maintenance personnel can see at least a part of the mounting seat 22 from the inspection port 311a with an inclined perspective by tilting their heads), or they may not be able to see the mounting seat 22 from the inspection port 311a. Regardless of whether the maintenance personnel can see the mounting seat 22, the magnesium rod assembly 20 can be disassembled and assembled by tilting it relative to the height direction.

[0075] It can be understood that for the staggered arrangement of the projection of the mounting seat 22 and the projection of the inspection port 311a, in order to facilitate the disassembly and assembly of the magnesium rod assembly 20, the mounting seat 22 should be as close to the inspection port 311a as possible. Preferably, the minimum distance between the projection of the mounting seat 22 and the projection of the inspection port 311a can be greater than 0 and less than or equal to 50 mm (when the minimum distance between the projection of the mounting seat 22 and the projection of the inspection port 311a is equal to 0, it can be regarded that the projection of the mounting seat 22 partially overlaps with the projection of the inspection port 311a).

[0076] In the related art, the installation space enclosed between the cover and the water tray is generally relatively small. In order to prevent the electric control box from blocking the air inlet and / or outlet of the cover and causing a decrease in the energy efficiency of the heat pump water heater, the electric control box is generally placed flat in the cover. However, for an integrated heat pump water heater in which the magnesium rod assembly is inserted into the inner tank from the top of the water tank assembly, the flat electric control box will block the magnesium rod assembly. Therefore, during the inspection and maintenance of the magnesium rod assembly, the maintenance personnel must remove the entire electric control box after disassembling the cover to take out the magnesium rod assembly, which is not convenient for the inspection and maintenance of the magnesium rod assembly.

[0077] The electric control box 31 of the embodiment of the present application is provided with a first box body 311 having an inspection port 311a, through which maintenance personnel can disassemble and assemble the magnesium rod assembly 20 without removing the entire electric control box 31. Therefore, the electric control box 31 of the embodiment of the present application can improve the convenience of maintenance of the magnesium rod assembly 20.

[0078] In one embodiment, please refer to Figure 5 For the electric control box 31 having the second box body 312, the second box body 312 can be detachably connected to the first box body 311. That is, after the second box body 312 is opened, the second box body 312 can be separated from the first box body 311, but the first box body 311 is still installed in the cover 32. After the maintenance personnel complete the maintenance of the magnesium rod assembly 20, they can connect the second box body 312 to the first box body 311.

[0079] The second box body 312 is detachably connected to the first box body 311 , which can better prevent the opened second box body 312 from hindering maintenance personnel's maintenance to a certain extent, thereby further improving the convenience of maintenance of the magnesium rod assembly 20 .

[0080] In some other embodiments, the second box body 312 may also be inseparably connected to the first box body 311 , that is, after the second box body 312 is opened, the second box body 312 and the first box body 311 still remain connected.

[0081] In one embodiment, please refer to Figure 2 and Figure 5The electric control box 31 may be provided with a heat sink 314, and the heat sink 314 is used to dissipate heat for the electric control board 313. For the electric control box 31 with a second box body 312, the electric control board 313 may be provided on a side of the second box body 312 close to the first box body 311, and the heat sink 314 is provided on a side of the electric control board 313 close to the first box body 311. When the second box body 312 is in a closed state, the heat sink 314 is provided through the inspection port 311a.

[0082] That is, the electric control board 313 is fixed to the second box body 312. After the second box body 312 is opened, the electric control board 313 and the heat sink 314 are both located in the second box body 312. After the second box body 312 is closed, the heat sink 314 is inserted into the inspection port 311a. Since the inspection port 311a passes through the first box body 311, the heat sink 314 can exchange heat with the external environment through the inspection port 311a, thereby improving the heat dissipation effect.

[0083] In order to ensure safety, the parts of the electric control box 31 including the heat sink 314 generally need to be sealed. The sealing of the heat sink 314 is to seal the circumference of the heat sink 314 .

[0084] The circumference of the heat sink 314 can be sealed with the first box body 311. Figures 11 to 18 The first box body 311 may be provided with a first side wall 31121 having a mounting groove 31121a, the first side wall 31121 is located at one side of the inspection port 311a along the first direction of the electric control box 31, and the heat sink 314 is located at one side of the electric control board 313 along the first direction close to the first side wall 31121. The electric control box 31 further includes a first sealing member 315 provided in the mounting groove 31121a, and when the first box body 311 is in a closed state, the first sealing member 315 is in sealing contact with the heat sink 314.

[0085] The first sealing member 315 seals one side of the heat sink 314 along the circumferential direction. That is, one side of the heat sink 314 along the circumferential direction can be sealed by the first sealing member 315 .

[0086] See also Fig.12 and Fig.16 , the first sealing member 315 can extend from the mounting groove 31121a and be in sealing contact with the heat sink 314.

[0087] In other embodiments, the side of the first seal 315 close to the inspection port 311a may also be flush with the first side wall 31121, or the entire first seal 315 may also be located in the mounting groove 31121a. For the first seal 315 located in the mounting groove 31121a, the side of the heat sink 314 close to the first side wall 31121 may extend into the mounting groove 31121a and be in sealing contact with the heat sink 314.

[0088] Except for one side of the heat sink 314 close to the first side wall 31121 , the sealing method of other sides of the heat sink 314 along the circumferential direction is not limited.

[0089] For example, see Fig.17 and Fig.18 The heat sink 314 may include a heat sink body 3141 and a boss 3142. For ease of description, the side of the heat sink body 3141 close to the first seal 315 may be referred to as the first side of the heat sink body 3141 along the circumferential direction. The boss 3142 is disposed on the outer peripheral side of the heat sink body 3141 along the circumferential direction and avoids the first side. In other words, the first side of the heat sink body 3141 does not have the boss 3142. The first seal 315 is in sealing contact with the first side of the heat sink body 3141. The first box body 311 is in sealing cooperation with the side of the boss 3142 away from the electric control board 313. In other words, the other sides of the heat sink 314 along the circumferential direction may be sealed by providing the boss 3142.

[0090] The first box body 311 and the side of the boss 3142 facing away from the electric control board 313 can achieve sealing cooperation through sealing contact, that is, the first box body 311 can directly abut against the boss 3142 .

[0091] The first box body 311 may also be provided with a second seal, which is arranged on the side of the boss 3142 away from the electronic control board 313 and is in sealing contact with the boss 3142 and the first box body 311 respectively. That is, the second seal can be clamped between the boss 3142 and the first box body 311 to achieve sealing fit.

[0092] In the related art, the sealing of the heat sink in the electric control box is generally achieved by providing a protruding step around the entire circumference of the heat sink, and the box body of the electric control box abuts against the step to achieve the sealing of the heat sink. Since the step is provided around the entire circumference of the heat sink, a part of the step is located between the heat sink and the first side wall of the box body. The part of the step located between the heat sink and the first side wall needs to occupy the installation space of the box body along the first direction, which results in a longer length dimension of the box body along the first direction, and further results in a relatively large overall size of the electric control box.

[0093] In this embodiment, a mounting groove 31121a is provided on the first side wall 31121 of the first box body 311. At the same time, the electric control box 31 is also provided with a first sealing member 315, which is provided in the mounting groove 31121a and is in sealing contact with the heat sink 314. This sealing method can eliminate the step between the heat sink 314 and the first side wall 31121, which is equivalent to eliminating the installation space occupied by the step in the first direction. In addition, since the first sealing member 315 is provided in the mounting groove 31121a, the installation space of the first sealing member 315 in the first direction is basically located in the first side wall 31121, and the first sealing member 315 hardly occupies the installation space of the first box body 311 along the first direction. Therefore, this sealing method is conducive to reducing the length dimension of the electric control box 31 along the first direction, thereby meeting the sealing requirements of the heat sink 314 and realizing the miniaturization of the electric control box 31.

[0094] Also, see Figure 6 and Fig.11 The electric control board 313 has a first length dimension along a first direction and a second length dimension along a second direction perpendicular to the first direction. For the electric control board 313 whose first length dimension is different from the second length dimension, the first length dimension may preferably be greater than the second length dimension, that is, the heat sink 314 is arranged on the side of the electric control board 313 with a relatively longer dimension.

[0095] Specifically, in some cases, the external dimensions of the electric control board 313 determine the external dimensions of the electric control box 31. For example, if the first length dimension is greater than the second length dimension, the length dimension of the electric control box 31 along the first direction is also correspondingly greater than the length dimension of the electric control box 31 along the second direction. Therefore, the first length dimension is preferably greater than the second length dimension, which can reduce the relatively larger dimensions of the external dimensions of the electric control box 31 (equivalent to reducing the aspect ratio of the electric control box 31), thereby being more conducive to the miniaturization of the electric control box 31.

[0096] In some other embodiments, the first length dimension may also be smaller than the second length dimension, that is, the heat sink 314 may also be disposed on the side of the electric control board 313 where the dimension is relatively shorter.

[0097] In other embodiments, the first length dimension may also be equal to the second length dimension, for example, the electric control board 313 may be square.

[0098] Furthermore, since the first side wall 31121 of the first box body 311 is located on one side of the inspection port 311a along the first direction of the electric control box 31, after the electric control box 31 is installed in the cover shell 32, the opposite sides of the electric control box 31 along the first direction are both facing the shell body 321. It should be noted that the opposite sides of the electric control box 31 along the first direction are both facing the shell body 321, which is to explain the setting method of the electric control box 31 from the perspective of both the electric control box 31 and the shell body 321. Any side of the opposite sides of the electric control box 31 along the first direction can directly face the shell body 321, that is, there is no other component or structure blocking between any side of the opposite sides of the electric control box 31 along the first direction and the shell body 321. Any side of the opposite sides of the electric control box 31 along the first direction can also indirectly face the shell body 321, that is, other components or structures can also be arranged between any side of the opposite sides of the electric control box 31 along the first direction and the shell body 321. Since the installation space enclosed between the cover shell 32 and the water receiving tray 33 is generally relatively small, after the length dimension along the first direction of the electric control box 31 of this embodiment is reduced, the distance between the electric control box 31 and the shell body 321 in the first direction of the electric control box 31 is increased. Therefore, during the falling and transportation of the head assembly 30 and / or the heat pump water heater, it is also possible to better avoid the electric control box 31 colliding with the cover shell 32 in the first direction and causing damage to related components of the electric control box 31 and / or the cover shell 32.

[0099] In one embodiment, please refer to Fig.13 and Fig.16 The first sealing member 315 may include a mounting portion 3151 and a sealing portion 3152 located on one side of the mounting portion 3151 , the mounting portion 3151 is disposed in the mounting groove 31121 a , and the sealing portion 3152 is in sealing contact with the heat sink 314 .

[0100] See also Fig.16 The area of ​​the cross section of the sealing portion 3152 perpendicular to the first direction can gradually decrease in the direction away from the mounting portion 3151, that is, the area of ​​the cross section of the sealing portion 3152 close to the mounting portion 3151 is larger than the area of ​​the cross section of the sealing portion 3152 away from the mounting portion 3151.

[0101] Exemplarily, the shape of the longitudinal section of the sealing portion 3152 perpendicular to the cross section can be a trapezoid, a triangle, a semicircle, a semi-ellipse, etc.

[0102] The cross-sectional area of ​​the sealing portion 3152 gradually decreases in the direction away from the mounting portion 3151 , which can ensure that the sealing portion 3152 can be reliably sealed with the heat sink 314 and can also ensure that the sealing portion 3152 can be reliably connected with the mounting portion 3151 .

[0103] In other embodiments, the sealing portion 3152 may also be a structure with a uniform cross-section, that is, the cross-sectional area of ​​the sealing portion 3152 may also be the same everywhere.

[0104] In one embodiment, please refer to Fig.16 The junction of the mounting portion 3151 and the sealing portion 3152 may form a first step surface 3151a located at the mounting portion 3151, and the mounting groove 31121a passes through the first side wall 31121. The mounting groove 31121a includes a first sub-groove 31121a1 and a second sub-groove 31121a2, the second sub-groove 31121a2 is located on the side of the first sub-groove 31121a1 away from the heat sink 314, and the junction of the second sub-groove 31121a2 and the first sub-groove 31121a1 forms a second step surface 31121b facing the first sub-groove 31121a1. The mounting portion 3151 is disposed in the first sub-groove 31121a1, the first step surface 3151a abuts against the second step surface 31121b, and the sealing portion 3152 passes through the second sub-groove 31121a2.

[0105] Specifically, during the process of installing the first seal 315, the first seal 315 can be placed into the installation groove 31121a from the side of the first side wall 31121 facing away from the heat sink 314. When the first step surface 3151a on the installation portion 3151 abuts against the second step surface 31121b on the first side wall 31121, it indicates that the first seal 315 has been installed in place, thereby facilitating the installation of the first seal 315.

[0106] In other embodiments, the installation groove 31121a may not penetrate the first side wall 31121. For example, the side of the installation groove 31121a facing away from the heat sink 314 may be closed, and the first seal 315 is inserted into the installation groove 31121a from the side of the first side wall 31121 close to the heat sink 314.

[0107] In one embodiment, please refer to Fig.11 , Fig.15 and Fig.16 The first box body 311 may include a first shell 3111 and a second shell 3112 having a first side wall 31121, and the second shell 3112 is disposed in the first shell 3111. That is, the first box body 311 may be composed of at least two shells.

[0108] The first shell 3111 and the second shell 3112 can be made of different materials. For example, the first shell 3111 can be made of metal, and the second shell 3112 can be made of plastic. The second shell 3112 made of plastic can play a certain insulating role, and the first shell 3111 made of metal can play a certain fire-proof and explosion-proof role. Therefore, the combination of the first shell 3111 made of metal and the second shell 3112 made of plastic can improve the safety of the electric control box 31.

[0109] In some other embodiments, the first shell 3111 and the second shell 3112 may also be made of the same material.

[0110] For the second shell 3112 with the installation groove 31121a passing through the first side wall 31121, the first seal 315 can be placed into the installation groove 31121a from the side of the first side wall 31121 away from the heat sink 314, and then the second shell 3112 can be placed into the first shell 3111 to shield the first seal 315 through the first shell 3111.

[0111] In other embodiments, regardless of whether the installation groove 31121a penetrates the first side wall 31121, the first box body 311 may also have only one shell.

[0112] In addition, similar to the first box body 311 , the second box body 312 may also be composed of at least two shells.

[0113] In one embodiment, please refer to Fig.16 The heat sink 314 includes a heat sink body 3141 , the heat sink body 3141 includes a connecting portion 31411 and a heat sink 31412 located on a side of the connecting portion 31411 away from the electric control board 313 , and the first sealing member 315 can be in sealing contact with the connecting portion 31411 .

[0114] The heat dissipation part 31412 is the part of the heat dissipation element 314 for heat dissipation. The specific structural form of the heat dissipation part 31412 is not limited. For example, the heat dissipation part 31412 can be provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins are arranged at intervals. The airflow passes through the intervals between the heat dissipation fins to achieve heat dissipation.

[0115] For ease of description, the projections of the connecting portion 31411 and the heat dissipating portion 31412 on the electric control board 313 may be referred to as the first projection and the second projection, respectively. Preferably, the outer contour of the first projection close to the first sealing member 315 may be located within the projection range of the second projection, see Fig.16 That is to say, the side of the connecting portion 31411 close to the first sealing member 315 does not protrude from the heat dissipation portion 31412, thereby effectively preventing the connecting portion 31411 from occupying too much installation space of the first box body 311 in the first direction.

[0116] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. 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 embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0117] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A heat pump water heater, characterized in that: include: A water tank assembly, the water tank assembly comprising an outer shell and an inner tank disposed in the outer shell, wherein the outer shell has a mounting opening at the top along the height direction of the heat pump water heater; A magnesium rod assembly, the magnesium rod assembly comprising a magnesium rod and a mounting seat disposed at one end of the magnesium rod, the magnesium rod extending into the inner tank from the mounting opening, and the mounting seat exposed at the mounting opening; A machine head assembly, the machine head assembly includes an electric control box, a cover shell and a water receiving tray with an avoidance hole, the electric control box includes a first box body, the first box body has an inspection port penetrating the first box body; the water receiving tray is arranged on the top of the outer shell, the avoidance hole avoids the installation port, and the cover shell is arranged on the side of the water receiving tray away from the outer shell; the electric control box is arranged in the cover shell and is located on the upper side of the magnesium rod assembly, and the inspection port faces the water receiving tray.

2. The heat pump water heater according to claim 1, characterized in that: On a projection plane perpendicular to the height direction, the projection of the mounting seat is located outside the projection area of ​​the electric control box, or at least a portion of the projection of the mounting seat is located within the projection range of the electric control box.

3. The heat pump water heater according to claim 1 or 2, characterized in that: On a projection plane perpendicular to the height direction, the projection of the mounting seat and the projection of the inspection opening are staggered or at least partially overlapped.

4. The heat pump water heater according to claim 3, characterized in that: The projection of the mounting seat is staggered from the projection of the inspection opening, and the minimum distance between the projection of the mounting seat and the projection of the inspection opening is greater than 0 and less than or equal to 50 mm.

5. The heat pump water heater according to claim 1 or 2, characterized in that: The cover shell comprises a shell body and a shell cover detachably connected to the shell body, and the shell cover is located at a side of the shell body away from the water receiving tray.

6. The heat pump water heater according to claim 1 or 2, characterized in that: The head assembly comprises a heat exchanger and a compressor which are arranged in the housing, the compressor and the avoidance hole are located on the same side of the heat exchanger, and the electric control box is arranged on the upper side of the compressor.

7. The heat pump water heater according to claim 6, characterized in that: The head assembly includes a support frame and a wind wheel bracket. The support frame is arranged on a side of the heat exchanger close to the compressor, and the wind wheel bracket is arranged on a side of the heat exchanger away from the compressor. The first box body is respectively connected to the support frame and the wind wheel bracket.

8. The heat pump water heater according to claim 1 or 2, characterized in that: The electric control box comprises a second box body, and the second box body is openably and closably arranged on the first box body, so as to avoid or cover the inspection port by opening and closing.

9. The heat pump water heater according to claim 8, characterized in that: The second box body is detachably connected to the first box body.

10. The heat pump water heater according to claim 8, characterized in that: The electric control box includes an electric control board and a heat sink. The electric control board is arranged on a side of the second box body close to the first box body, and the heat sink is arranged on a side of the electric control board close to the first box body. When the second box body is in a closed state, the heat sink is inserted into the inspection port.

11. The heat pump water heater according to claim 10, characterized in that: The heat sink is sealed with the first box body in the circumference, wherein the first box body includes a first side wall having a mounting groove, the first side wall is located on a side of the inspection port along a first direction of the electric control box, and the heat sink is located on a side of the electric control board along the first direction close to the first side wall; the electric control box also includes a first seal arranged in the mounting groove, and when the first box body is in a closed state, the first seal is in sealing contact with the heat sink.

12. The heat pump water heater according to claim 11, characterized in that: The first sealing member comprises a mounting portion and a sealing portion located at one side of the mounting portion, the mounting portion is arranged in the mounting groove, and the sealing portion is in sealing contact with the heat sink; The area of ​​the cross section of the sealing portion perpendicular to the first direction gradually decreases in a direction away from the mounting portion; and / or, A first step surface located at the mounting portion is formed at the junction of the mounting portion and the sealing portion, and the mounting groove passes through the first side wall; the mounting groove includes a first sub-groove and a second sub-groove, the second sub-groove is located on the side of the first sub-groove away from the heat sink, and a second step surface facing the first sub-groove is formed at the junction of the second sub-groove and the first sub-groove, the mounting portion is arranged in the first sub-groove, the first step surface is abutted against the second step surface, and the sealing portion is passed through the second sub-groove.

13. The electric control box according to claim 11, characterized in that: The first box body includes a first shell and a second shell having the first side wall, and the second shell is arranged in the first shell; and / or, The heat sink includes a heat sink body, which includes a connecting portion and a heat sink located on a side of the connecting portion facing away from the electric control board. The projections of the connecting portion and the heat sink on the electric control board are respectively a first projection and a second projection. The outer contour of the first projection on a side close to the first sealing member is located within the projection range of the second projection. The first sealing member is in sealing contact with the connecting portion.

14. The electric control box according to claim 11, characterized in that: The heat sink comprises a heat sink body and a boss, a side of the heat sink body close to the first seal is a first side of the heat sink body along the circumferential direction, the boss is arranged on the outer circumferential side of the heat sink body along the circumferential direction and avoids the first side, and the first seal is in sealing contact with the first side of the heat sink body; The first box body is in sealing contact with a side of the boss facing away from the electric control board; or, The electric control box comprises a second sealing member, which is arranged on a side of the boss away from the electric control board and is in sealing contact with the boss and the first box body respectively.

15. The electric control box according to claim 11, characterized in that: The electric control board has a first length dimension along the first direction and a second length dimension along a second direction perpendicular to the first direction, and the first length dimension is greater than the second length dimension.

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