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

Abstract

The embodiment of the utility model provides an electric control box, a machine head assembly and a heat pump water heater, and the electric control box comprises a first box body, a second box body, an electric control board, a heat dissipation piece and a sealing piece; the first box body is provided with an avoiding opening; the second box body is arranged on one side of the first box body in an openable and closable mode and rotationally connected with the first box body, and the rotating axis of the second box body is located on the side, in the first direction, of the receding opening; the electric control board is arranged on the side, close to the first box body, of the second box body. The heat dissipation piece is arranged on the electric control board and located on the side, away from the second box body, of the electric control board, and when the second box body is in the closed state, the heat dissipation piece is arranged in the avoiding opening in a penetrating mode; the sealing element is arranged in the first box body, the sealing element is located on the side, away from the rotating axis in the first direction, of the receding opening, and at least part of the structure of the sealing element is located in the receding opening and makes sealing contact with the heat dissipation element arranged in the receding opening in a penetrating mode. According to the electric control box, the sealing effect can be improved.

Description

Technical Field

[0001] The present application relates to the field of electrical appliance technology, and in particular to an electric control box, a head assembly and a heat pump water heater. Background Art

[0002] In the related art, a heat pump water heater is equipped with an electrical control box with a heat sink, which is mounted on the electrical control board of the electrical control box. Due to the high heat generated by the heat sink, to achieve effective heat dissipation, the heat sink is generally extended to the outside of the box through a relief opening in the box body. Furthermore, to prevent the heat pump water heater's refrigerant from accidentally leaking through the heat sink and entering the electrical control box through the heat sink, potentially damaging components such as the electrical control board, a seal is required between the heat sink and the box body.

[0003] In the related art, one type of electronic control box has a lid that is rotatably connected to the box body, with the electronic control board mounted on the lid. When the lid is rotated closed, the heat sink automatically enters the escape opening. However, once the heat sink enters the escape opening, a large gap often forms between the heat sink and the box body, resulting in seal failure. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide an electric control box, a head assembly and a heat pump water heater that can improve the sealing reliability.

[0005] To achieve the above objectives, an embodiment of the present application provides an electric control box, comprising:

[0006] A first box body having an escape opening;

[0007] a second box body, the second box body being openably and closably disposed on one side of the first box body and being rotatably connected to the first box body, wherein the rotation axis of the second box body is located on one side of the avoidance opening along the first direction;

[0008] an electric control board, the electric control board being arranged on a side of the second box body close to the first box body;

[0009] a heat sink, the heat sink being arranged on the electric control board and being located on a side of the electric control board facing away from the second box body, and when the second box body is in a closed state, the heat sink is arranged in the avoidance opening;

[0010] A sealing member is provided on the first box body, the sealing member is located on the side of the avoidance opening away from the rotation axis along the first direction, at least part of the structure of the sealing member is located in the avoidance opening, and is in sealing contact with the heat dissipation member penetrating the avoidance opening.

[0011] In one embodiment, a portion of the sealing member is located on a movement path of the heat dissipating member entering the avoidance opening.

[0012] In one embodiment, the seal includes a mounting portion and a sealing portion located on one side of the mounting portion and in sealing contact with the heat sink, and the area of ​​the cross section of the sealing portion perpendicular to the first direction is smaller than the area of ​​the cross section of the mounting portion perpendicular to the first direction.

[0013] In one embodiment, the thickness of the sealing portion along the penetrating direction of the avoidance opening is less than or equal to 10 mm.

[0014] In one embodiment, the first box body has a mounting groove connected to the avoidance opening, the mounting groove is located on a side of the avoidance opening away from the rotation axis along the first direction, and the sealing member is arranged in the mounting groove.

[0015] In one embodiment, the first box body has an end surface located on a peripheral side of the avoidance opening, and a partial area of ​​the end surface is recessed along an extension direction of the avoidance opening to form the installation groove.

[0016] In one embodiment, the mounting groove includes a first sub-groove and a second sub-groove respectively connected to the first sub-groove and the avoidance opening, the groove depth of the first sub-groove along the extension direction is greater than the groove depth of the second sub-groove along the extension direction, and the sealing member includes a mounting portion and a sealing portion located on one side of the mounting portion, the mounting portion is arranged in the first sub-groove, and at least part of the structure of the sealing portion is located in the second sub-groove and is in sealing contact with the heat sink.

[0017] In one embodiment, the heat sink includes a heat sink body and a boss, the boss is arranged on the outer peripheral side of the heat sink body and is at least located on the side of the heat sink body close to the seal, and the side of the boss facing away from the electronic control board is in sealing contact with the seal.

[0018] In one embodiment, a portion of the boss is located on a side of the heat dissipation body close to the rotation axis along the first direction and is sealed with the first box body; and / or,

[0019] A portion of the boss is located on opposite sides of the heat dissipation body along a second direction and is sealed with the first box body. The second direction is perpendicular to the first direction and the extension direction of the avoidance opening.

[0020] Another embodiment of the present application provides a head assembly, comprising:

[0021] water tray;

[0022] A cover shell is arranged on one side of the water receiving tray;

[0023] The electric control box described above is arranged in the cover shell.

[0024] Yet another embodiment of the present application provides a heat pump water heater, comprising a water tank assembly and the aforementioned head assembly, wherein the head assembly is on the water tank assembly.

[0025] The embodiment of the present application provides an electric control box, a head assembly and a heat pump water heater. The electric control box of the embodiment of the present application is provided with a sealing member on the first box body, and the sealing member is located on the side of the avoidance opening away from the rotation axis along the first direction. When the second box body cover is provided on the first box body, the heat sink is inserted into the avoidance opening of the first box body and is sealed by sealing contact with the sealing member. Since the sealing member has good elastic deformation ability, during the process of the heat sink entering the avoidance opening, even if other parts of the heat sink contact with the sealing member, the heat sink can also resist the obstruction of the seal by squeezing the sealing member. That is to say, even if the distance between the seal and the heat sink is too close, the seal will not hinder the heat sink from entering the avoidance opening. Therefore, by providing the sealing member on the side of the avoidance opening away from the rotation axis along the first direction, and at least part of the structure of the sealing member is located in the avoidance opening, it can be ensured that the heat sink can enter the avoidance opening smoothly, and it can be ensured that the heat sink is located on the side of the avoidance opening away from the rotation axis along the first direction to achieve effective sealing, thereby improving the reliability of the sealing of the electric control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a head assembly according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 The schematic diagram of the structure of the head assembly is shown, with the cover omitted;

[0028] Figure 3 for Figure 1 The structure diagram of the head assembly from another angle is shown, with the cover omitted in the figure;

[0029] Figure 4 for Figure 3 An exploded view of the electrical control box is shown;

[0030] Figure 5 for Figure 4 The structural diagram of the electric control box shown;

[0031] Figure 6 for Figure 5 The cross-sectional view at AA in the middle shows the second box body in the open state;

[0032] Figure 7 for Figure 5 The cross-sectional view at AA in the middle shows that the second box body is in a closed state;

[0033] Figure 8for Figure 7 A partial enlarged view of point B in the middle;

[0034] Figure 9 for Figure 7 A partial enlarged view of point B in the middle, with the seal omitted;

[0035] Figure 10 for Figure 7 A partial enlarged view of point C in the middle.

[0036] Description of reference numerals:

[0037] 10. Electric control box; 11. First box body; 11a. Avoidance; 11b. Installation groove; 11b1. First sub-groove; 11b2. Second sub-groove; 11c. End face; 111. First shell; 112. Second shell; 12. Second box body; 121. Third shell; 122. Fourth shell; 13. Electric control board; 14. Heat sink; 141. Heat sink body; 142. Boss; 15. Sealing member; 151. Installation portion; 152. Sealing portion; 20. Water tray; 30. Cover. DETAILED DESCRIPTION

[0038] In the description of the embodiments of the present application, it should be noted that the term "second direction" is based on the attached Figure 5 The orientation or position relationship shown in the figure, "through direction" and "first 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 to 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 should not be understood as limiting the embodiments of the present application.

[0039] The present application embodiment provides an electric control box 10, see Figures 2 to 7 The electric control box 10 includes a first box body 11 , a second box body 12 , an electric control board 13 , a heat sink 14 and a sealing member 15 .

[0040] The first box body 11 has an escape opening 11 a for escaping the heat sink 14 .

[0041] See also Figure 4 、 Figure 6 and Figure 7 The second box body 12 is openably and closably disposed on one side of the first box body 11 and is rotatably connected to the first box body 11 . The rotation axis of the second box body 12 is located on one side of the avoidance opening 11 a along the first direction.

[0042] The electric control board 13 is disposed on a side of the second box body 12 close to the first box body 11 . That is, the electric control board 13 is fixed to the second box body 12 and rotates with the second box body 12 .

[0043] The heat dissipation member 14 is arranged on the electric control board 13 and is located on the side of the electric control board 13 away from the second box body 12. When the second box body 12 is in the closed state, the heat dissipation member 14 is arranged in the avoiding opening 11a.

[0044] The heat dissipation member 14 is used for heat dissipation of the electric control board 13. The heat dissipation member 14 rotates with the electric control board 13. After the second box body 12 is opened, the heat dissipation member 14 is away from the avoiding opening 11a. After the second box body 12 is closed, the heat dissipation member 14 is arranged in the avoiding opening 11a.

[0045] The structure of the first box body 11 is not limited. For example, please refer to Figure 4 The first box body 11 can include a first shell 111 and a second shell 112. The second shell 112 is arranged on the side of the first shell 111 close to the second box body 12.

[0046] The first shell 111 and the second shell 112 can be of the same material or different materials.

[0047] For the first shell 111 and the second shell 112 of different materials, for example, the first shell 111 can be of metal material, and the second shell 112 can be of plastic material. The second shell 112 of plastic material can have certain insulation effect, and the first shell 111 of metal material can have certain fireproof and explosion-proof effect. Therefore, the combination of the first shell 111 of metal material and the second shell 112 of plastic material can improve the safety of the electric control box 10.

[0048] In other embodiments, the first box body 11 can also have only one shell.

[0049] The structure of the second box body 12 is not limited. For example, please refer to the first box body 11. Figure 4 The second box body 12 can include a third shell 121 and a fourth shell 122. The fourth shell 122 is arranged on the side of the third shell 121 close to the first box body 11. For the third shell 121 and the fourth shell 122 of different materials, for example, the third shell 121 can be of metal material, and the fourth shell 122 can be of plastic material.

[0050] For example, please refer to Figure 4 , Figure 6 and Figure 7The sealing member 15 is arranged on the first box body 11, and is located on the side of the first direction away from the rotation axis of the avoiding opening 11a. At least part of the structure of the sealing member 15 is located in the avoiding opening 11a and is in sealing contact with the heat dissipation member 14 arranged in the avoiding opening 11a. That is, the sealing member 15 is used to seal the side of the heat dissipation member 14 away from the rotation axis in the first direction, and the sealing member 15 realizes sealing by extending into the avoiding opening 11a and being in sealing contact with the heat dissipation member 14.

[0051] The sealing member 15 realizes sealing by elastic deformation of itself. For example, the material of the sealing member 15 can be silica gel, rubber or the like.

[0052] The way in which the sealing member 15 extends into the avoiding opening 11a and is in sealing contact with the heat dissipation member 14 is not limited. For example, please refer to Figure 4 and Figure 8 The heat dissipation member 14 can include a heat dissipation body 141 and a boss 142. The boss 142 is arranged on the outer circumferential side of the heat dissipation body 141 and is located on at least the side of the heat dissipation body 141 close to the sealing member 15. The side of the boss 142 away from the electric control panel 13 is in sealing contact with the sealing member 15. That is, the side of the heat dissipation body 141 close to the sealing member 15 is provided with the boss 142, and the sealing member 15 is in sealing contact with the boss 142 to seal the side of the heat dissipation member 14 away from the rotation axis in the first direction.

[0053] It should be noted that the sealing member 15 in some embodiments is not limited to the sealing function. For the embodiment in which the side of the boss 142 away from the electric control panel 13 is in sealing contact with the sealing member 15, the sealing member 15 can also support the sealing member 15 to a certain extent. That is, when the sealing member 15 is located between the first box body 11 and the boss 142, the sealing member 15 is in abutment with the side of the boss 142 away from the electric control panel 13 to support the side of the heat dissipation member 14 away from the rotation axis in the first direction.

[0054] In other embodiments, the sealing member 15 can not be in sealing contact with the boss 142. For example, the sealing member 15 can be in sealing contact with the side of the heat dissipation member 14 away from the rotation axis.

[0055] In addition, generally, the sealing of the heat dissipation member 14 is to seal the circumferential direction of the heat dissipation member 14, and the side of the heat dissipation member 14 away from the rotation axis in the first direction is only one side of the heat dissipation member 14 in the circumferential direction. The sealing manner of the other sides of the heat dissipation member 14 in the circumferential direction is not limited.

[0056] For example, the boss 142 can be arranged on the other side of the heat dissipation body 141 close to the sealing member 15 or not arranged on the other side of the heat dissipation body 141 close to the sealing member 15 according to needs.

[0057] For example, see Figure 7 and Figure 10 A portion of the boss 142 can be located on a side of the heat dissipation body 141 close to the rotation axis along the first direction, and can be sealed with the first box body 11. In other words, the heat dissipation body 141 is also provided with a boss 142 on a side close to the rotation axis along the first direction, and the boss 142 there can achieve a sealed fit with the first box body 11 through sealing contact, that is, the boss 142 directly abuts against the first box body 11, and other sealing members can also be provided between the boss 142 and the first box body 11 to achieve a seal.

[0058] For example, a portion of the boss 142 may be located on opposite sides of the heat dissipation body 141 along the second direction, and may be sealed against the first housing 11. The second direction is perpendicular to the first direction and the direction in which the avoidance opening 11a extends. In other words, the heat dissipation body 141 may also be provided with bosses 142 on opposite sides of the second direction. The bosses 142 at these locations may achieve a sealed engagement with the first housing 11 through sealing contact. That is, the bosses 142 may directly abut against the first housing 11. Alternatively, another sealing member may be provided between the bosses 142 and the first housing 11 to achieve a seal.

[0059] The structure of the heat dissipation body 141 is not limited. For example, the heat dissipation body 141 may be a plurality of heat dissipation fins arranged at intervals.

[0060] The present application also provides a head assembly. Figures 1 to 3 The head assembly includes 20, a cover 30 and the electric control box 10 provided in any embodiment of the present application. The cover 30 is arranged on one side of the water receiving tray 20, and the electric control box 10 is arranged in the cover 30.

[0061] The housing 30 has an air inlet and an air outlet. In addition to the electric control box 10 , the housing 30 also contains components such as a heat exchanger, a compressor, and a wind wheel.

[0062] An embodiment of the present application further provides a heat pump water heater, which includes a water tank assembly and a head assembly provided by any embodiment of the present application, wherein the head assembly is arranged on the water tank assembly.

[0063] The head assembly is generally arranged at the top of the water tank assembly along the height direction. In other embodiments, the head assembly can also be arranged at other positions of the water tank assembly.

[0064] The water tank assembly has an outer shell and an inner tank and a water tank heat exchanger arranged in the outer shell. The inner tank is used to store domestic water. The water tank heat exchanger can heat the domestic water in the inner tank into hot water by exchanging heat with the heat exchanger in the head assembly.

[0065] In the related art, the heat sink is generally sealed by abutting against the end face of the box body located on the side of the avoidance opening. However, for an electric control box in which the electric control board is fixed on the box cover and the box cover is opened and closed by rotation, in order for the heat sink on the electric control board to smoothly enter the avoidance opening on the box body, sufficient space is required between the side of the heat sink facing away from the rotation axis and the side wall of the avoidance opening. However, this arrangement may result in a large gap between the side of the heat sink facing away from the rotation axis and the box body after the heat sink enters the avoidance opening, making it impossible to effectively seal the contact.

[0066] The electric control box 10 of the embodiment of the present application is provided with a sealing member 15 on the first box body 11, and the sealing member 15 is located on the side of the avoidance opening 11a away from the rotation axis along the first direction. When the second box body 12 is covered on the first box body 11, the heat sink 14 is passed through the avoidance opening 11a of the first box body 11 and is sealed by contacting with the sealing member 15. Since the sealing member 15 has good elastic deformation ability, when the heat sink 14 enters the avoidance opening 11a, even if other parts of the heat sink 14 contact the sealing member 15, the heat sink 14 can resist the deformation by squeezing the sealing member 15. The sealing member 15 blocks the heat sink 14, that is, even if the sealing member 15 is too close to the heat sink 14, the sealing member 15 will not hinder the heat sink 14 from entering the avoidance opening 11a. Therefore, by arranging the sealing member 15 on the side of the avoidance opening 11a away from the rotation axis along the first direction, and at least part of the structure of the sealing member 15 is located inside the avoidance opening, it can be ensured that the heat sink 14 can smoothly enter the avoidance opening 11a, and can also ensure that the heat sink 14 is located on the side of the avoidance opening 11a away from the rotation axis along the first direction to achieve effective sealing, thereby improving the reliability of the sealing of the electric control box 10.

[0067] It should be noted that the electric control box 10 of the embodiment of the present application is not limited to being used in heat pump water heaters, and the electric control box 10 can be used in any other electrical equipment that requires the installation of the electric control box 10.

[0068] In one embodiment, please refer to Figure 6 , a portion of the sealing member 15 may be located on the movement path of the heat sink 14 entering the avoidance opening 11 a.

[0069] That is to say, when the heat sink 14 enters the avoidance opening 11a, the heat sink 14 contacts the sealing member 15 and applies a thrust to the sealing member 15. Under the action of the thrust, the sealing member 15 avoids the heat sink 14 by generating a certain elastic deformation, so that the heat sink 14 can enter the avoidance opening 11a. This setting method can maximize the length of the sealing member 15 in the avoidance opening 11a (that is, the length of the sealing member 15 along the first direction), thereby further improving the sealing effect.

[0070] In order to prevent the sealing member 15 from falling off from the first box body under the action of thrust, the sealing member 15 can be fixed to the first box body by fastening, clamping, etc., so as to increase the installation stability of the sealing member 15.

[0071] Please continue reading Figure 8 The sealing member 15 may include a mounting portion 151 and a sealing portion 152 located on one side of the mounting portion 151 and in sealing contact with the heat sink 14 .

[0072] An area of ​​a cross section of the sealing portion 152 perpendicular to the first direction may be smaller than an area of ​​a cross section of the mounting portion 151 perpendicular to the first direction.

[0073] That is to say, the cross-sectional area of ​​the mounting portion 151 perpendicular to the first direction is larger to ensure that the seal 15 has sufficient structural strength, while the cross-sectional area of ​​the sealing portion 152 perpendicular to the first direction is smaller, which can facilitate the elastic deformation of the seal 15 under the thrust of the heat sink 14.

[0074] For example, see Figure 8 The thickness dimension H of the sealing portion 152 along the penetrating direction of the avoidance opening 11 a may be less than or equal to 10 mm, so that the sealing portion 152 can have good elastic deformation.

[0075] In other embodiments, the sealing member 15 may also be a structure with a constant cross-section, that is, the cross-sectional area of ​​the sealing portion 152 is equal to the cross-sectional area of ​​the mounting portion 151 .

[0076] In other embodiments, the seal 15 may not be located on the movement path of the heat sink 14 entering the avoidance opening 11a. That is, during the process of the heat sink 14 entering the avoidance opening 11a, the seal 15 does not contact the heat sink 14. When the heat sink 14 moves into place, the seal 15 is in sealing contact with the sealing part of the heat sink 14.

[0077] In one embodiment, please refer to Figure 8 and Figure 9 The first box body 11 may have a mounting groove 11b connected to the avoidance opening 11a. The mounting groove 11b is located on the side of the avoidance opening 11a away from the rotation axis along the first direction. The sealing member 15 is disposed in the mounting groove 11b. The mounting groove 11b is used to mount the sealing member 15 so that the sealing member 15 is not easily removed.

[0078] For example, see Figure 8 For the sealing member 15 having the mounting portion 151 and the sealing portion 152 , the mounting portion 151 is disposed in the mounting groove 11 b .

[0079] It should be noted that the installation portion 151 is not limited to the installation function, and in some embodiments, the installation portion 151 can also have a sealing function, that is, the installation portion 151 is arranged in the installation groove 11b and in sealing contact with the first box body 11.

[0080] In an embodiment, referring to Figure 8 and Figure 9 , the first box body 11 has an end face 11c located at the side of the avoiding opening 11a, and part of the end face 11c can be recessed along the extension direction of the avoiding opening 11a to form the installation groove 11b.

[0081] The end face 11c refers to the end face 11c of the first box body 11 close to the second box body 12, that is, part of the slot of the installation groove 11b can be towards the second box body 12, and the sealing member 15 can be inserted into the installation groove 11b from the side of the installation groove 11b close to the second box body 12 to facilitate the installation of the sealing member 15.

[0082] Referring to Figure 9 , the installation groove 11b can include a first sub-groove 11b1 and a second sub-groove 11b2 respectively communicating with the first sub-groove 11b1 and the avoiding opening 11a, the groove depth of the first sub-groove 11b1 along the extension direction is greater than the groove depth of the second sub-groove 11b2 along the extension direction, the installation portion 151 is arranged in the first sub-groove 11b1, and at least part of the structure of the sealing portion 152 is located in the second sub-groove 11b2.

[0083] The groove depth refers to the distance between the groove bottom of the installation groove 11b along the extension direction and the end face 11c. The groove depth of the first sub-groove 11b1 is greater than the groove depth of the second sub-groove 11b2, which not only makes the installation portion 151 more stably arranged in the first sub-groove 11b1, but also makes the installation portion 151 more stably support the sealing portion 152.

[0084] In the description of the present application, the description of the terms "in an embodiment", "in some embodiments", "in another embodiment", "in yet another embodiment", or "exemplary" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the exemplary description of the above terms is not necessarily for 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 different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0085] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An electric control box, characterized in that: include: A first box body having an escape opening; a second box body, the second box body being openably and closably disposed on one side of the first box body and being rotatably connected to the first box body, wherein the rotation axis of the second box body is located on one side of the avoidance opening along the first direction; an electric control board, the electric control board being arranged on a side of the second box body close to the first box body; a heat sink, the heat sink being arranged on the electric control board and being located on a side of the electric control board facing away from the second box body, and when the second box body is in a closed state, the heat sink is arranged in the avoidance opening; A sealing member is provided on the first box body, the sealing member is located on the side of the avoidance opening away from the rotation axis along the first direction, at least part of the structure of the sealing member is located in the avoidance opening, and is in sealing contact with the heat dissipation member penetrating the avoidance opening.

2. The electric control box according to claim 1, characterized in that: A portion of the sealing member is located on a movement path of the heat sink entering the escape opening.

3. The electric control box according to claim 2, characterized in that: The sealing member includes a mounting portion and a sealing portion located on one side of the mounting portion and in sealing contact with the heat sink. The area of ​​the cross section of the sealing portion perpendicular to the first direction is smaller than the area of ​​the cross section of the mounting portion perpendicular to the first direction.

4. The electric control box according to claim 3, characterized in that: The thickness of the sealing portion along the penetrating direction of the avoidance opening is less than or equal to 10 mm.

5. The electric control box according to claim 1 or 2, characterized in that: The first box body has a mounting groove communicated with the avoidance opening, the mounting groove is located on a side of the avoidance opening away from the rotation axis along the first direction, and the sealing member is arranged in the mounting groove.

6. The electric control box according to claim 5, characterized in that: The first box body has an end surface located on the peripheral side of the avoidance opening, and a partial area of ​​the end surface is recessed along the extending direction of the avoidance opening to form the installation groove.

7. The electric control box according to claim 6, characterized in that: The mounting groove includes a first sub-groove and a second sub-groove respectively connected to the first sub-groove and the avoidance opening, the groove depth of the first sub-groove along the extension direction is greater than the groove depth of the second sub-groove along the extension direction, the sealing component includes a mounting portion and a sealing portion located on one side of the mounting portion, the mounting portion is arranged in the first sub-groove, and at least part of the structure of the sealing portion is located in the second sub-groove and is in sealing contact with the heat sink.

8. The electric control box according to claim 1 or 2, characterized in that: The heat sink includes a heat sink body and a boss. The boss is arranged on the outer periphery of the heat sink body and at least located on a side of the heat sink body close to the seal. The boss is in sealing contact with the seal on a side away from the electric control board.

9. The electric control box according to claim 8, characterized in that: A portion of the boss is located on a side of the heat dissipation body close to the rotation axis along the first direction and is sealed with the first box body; and / or, A portion of the boss is located on opposite sides of the heat dissipation body along a second direction and is sealed with the first box body. The second direction is perpendicular to the first direction and the extension direction of the avoidance opening.

10. A head assembly, characterized in that: include: water tray; A cover shell is arranged on one side of the water receiving tray; The electric control box according to any one of claims 1 to 9 is arranged in the cover.

11. A heat pump water heater, characterized in that: It comprises a water tank assembly and the head assembly according to claim 10, wherein the head assembly is on the water tank assembly.

Images