Box body assembly and heat pump water heater

Abstract

The utility model discloses a box body assembly and a heat pump water heater and relates to the technical field of heat pump equipment, the box body assembly comprises a plate body, a shell part and a filter screen assembly, the plate body is provided with an air inlet, the shell part is arranged on the plate body and covers the air inlet end of the air inlet, the shell part is provided with a containing cavity, an opening and a ventilation opening, and the filter screen assembly is arranged in the containing cavity. The filter screen assembly comprises a filter screen and a screen frame, the filter screen is arranged on the screen frame, the filter screen assembly can be inserted into or pulled out of the containing cavity along the opening, and when the filter screen assembly is inserted along the opening, the filter screen is located in the containing cavity so that the filter screen can shield the air inlet; a traditional dismounting mode that the air inlet pipe needs to be dismounted in advance or the shell part needs to be dismounted can be abandoned, maintenance personnel can directly pull out the filter screen assembly from the outer side of the plate body, operation is easy, convenient and rapid, and the filter screen assembly can be conveniently dismounted.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump equipment, and particularly relates to a box body assembly and a heat pump water heater. Background Art

[0002] In order to filter the air inhaled from the air inlet of the heat pump water heater, a filter screen capable of blocking the air inlet is generally arranged in the air inlet pipe of the heat pump water heater. During use, the filter screen needs to be disassembled regularly for cleaning. Before disassembling the filter screen of the traditional heat pump water heater, the body or the air inlet pipe needs to be disassembled to take out the filter screen, and the operation is complex and inconvenient to disassemble the filter screen. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a box body assembly which can facilitate the disassembly of the filter screen.

[0004] The utility model also provides a heat pump water heater with the above box body assembly.

[0005] The box body assembly according to the first aspect embodiment of the utility model includes:

[0006] A plate body provided with an air inlet;

[0007] A housing member disposed on the plate body and covering the air inlet end of the air inlet. The housing member is provided with a receiving cavity, an opening and a ventilation opening, and the opening, the ventilation opening and the air inlet are all communicated with the receiving cavity;

[0008] A filter screen assembly including a filter screen and a screen frame. The filter screen is disposed in the screen frame, and the filter screen assembly can be inserted into or withdrawn from the receiving cavity along the opening. When the filter screen assembly is inserted along the opening, the filter screen is located in the receiving cavity so that the filter screen blocks the air inlet or the ventilation opening.

[0009] The box body assembly according to the embodiment of the utility model has at least the following beneficial effects:

[0010] By arranging the housing member and the filter screen assembly outside the plate body, when disassembling the filter screen assembly, the filter screen assembly is withdrawn from the receiving cavity along the opening so that the filter screen does not block the air inlet. The traditional disassembly method that requires prior disassembly of the air inlet pipe or the body can be abandoned. The maintenance personnel can directly withdraw the filter screen assembly outside the plate body, and the operation is simple, convenient and fast, which can facilitate the disassembly of the filter screen assembly.

[0011] According to some embodiments of the utility model, a limiting structure is provided between the screen frame and the housing member, and the limiting structure is used to limit the filter screen assembly from withdrawing from the receiving cavity.

[0012] According to some embodiments of the utility model, the limiting structure includes a first limiting protrusion provided on the screen frame and a second limiting protrusion provided on the shell member, and along the direction in which the filter assembly exits the accommodating cavity, the first limiting protrusion abuts against the second limiting protrusion, and the first limiting protrusion is located on the side of the second limiting protrusion away from the opening.

[0013] According to some embodiments of the present utility model, the box assembly further includes a heat-insulating cover, which is disposed on the shell member, and the heat-insulating cover is provided with a avoidance opening for avoiding the opening.

[0014] According to some embodiments of the present invention, the heat-insulating cover is detachably provided on the shell member.

[0015] According to some embodiments of the present utility model, the filter assembly further includes a seal connected to one side of the screen frame, and the seal is used to seal the avoidance opening.

[0016] According to some embodiments of the present utility model, a handle is provided on a side of the sealing member facing away from the plate body.

[0017] According to some embodiments of the present invention, the shell member and the plate body are an integrated structure.

[0018] According to some embodiments of the present utility model, a guide structure is provided between the screen frame and the shell member, and the guide structure is used to guide the screen frame to move along a direction of entering or exiting the accommodating cavity.

[0019] According to some embodiments of the utility model, the guide structure includes a first frame and a second frame provided on the mesh frame, and along the length direction of the opening, the first frame and the second frame are arranged opposite to each other, and the first frame and the second frame are respectively abutted against opposite side walls of the accommodating cavity.

[0020] The heat pump water heater according to the second embodiment of the utility model comprises the tank assembly described in the above embodiment.

[0021] The heat pump water heater according to the embodiment of the utility model has at least the following beneficial effects:

[0022] A box assembly of the first aspect of the embodiment is adopted, by arranging a shell member and a filter assembly on the outer side of the plate body, the filter assembly includes a filter and a mesh frame, the filter is arranged on the mesh frame, and when the filter assembly is disassembled, the filter assembly is pulled out of the accommodating cavity along the opening so that the filter does not block the air inlet. The traditional disassembly method that requires pre-disassembly of the air inlet duct or disassembly of the fuselage can be abandoned. The maintenance personnel can directly pull out the filter assembly from the outer side of the plate body. The operation is simple, convenient and quick, and the filter assembly can be easily disassembled.

[0023] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0024] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0025] Figure 1 It is a schematic structural diagram of a box body assembly according to an embodiment of the present utility model, in which the filter screen blocks the air inlet;

[0026] Figure 2 It is an exploded schematic diagram of a box body assembly according to an embodiment of the present utility model;

[0027] Figure 3 It is an exploded schematic diagram of a plate body and a filter screen assembly according to an embodiment of the present utility model;

[0028] Figure 4 It is an assembled schematic diagram of a plate body and a filter screen assembly according to an embodiment of the present utility model, in which the filter screen blocks the air inlet;

[0029] Figure 5 is Figure 4 top view of;

[0030] Figure 6 is Figure 5 cross-sectional view taken along line A-A in;

[0031] Figure 7 is Figure 4 side view of;

[0032] Figure 8 is Figure 7 cross-sectional view taken along line B-B in;

[0033] Figure 9 is Figure 8 partial enlarged view of part C in;

[0034] Figure 10 It is a schematic structural diagram of a filter screen assembly according to an embodiment of the present utility model;

[0035] Figure 11 It is an exploded schematic diagram of a seal and a mesh frame according to an embodiment of the present utility model.

[0036] Reference Numerals in the Drawings:

[0037] Plate body 100, air inlet 110;

[0038] Housing part 200, accommodation cavity 210, opening 220, ventilation opening 230, second limiting protrusion 240, third guiding part 241, fourth guiding part 242;

[0039] Filter screen assembly 300, filter screen 310, screen frame 320, first limiting protrusion 321, first guiding portion 3211, second guiding portion 3212, first side frame 322, second side frame 323, mounting block 324, seal 330, handle 331, mounting groove 332, reinforcing frame 340;

[0040] Thermal insulation cover 400, avoidance opening 410;

[0041] Side plate 510, bottom plate 520. Specific embodiments

[0042] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0044] In the description of the present utility model, "a plurality of" means more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0045] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0046] In the related art, in order to filter the air inhaled from the air inlet of a heat pump water heater, a filter screen capable of blocking the air inlet is generally provided in the air inlet pipe of the heat pump water heater. During use, the filter screen needs to be regularly disassembled for cleaning. The installation methods of the filter screen of traditional heat pump water heaters include the following two:

[0047] First, before connecting the air inlet pipe, the filter screen is installed at the air inlet by a snap connection method. After that, the air inlet pipe is installed at the air inlet. When disassembling the filter screen, the air inlet pipe needs to be disassembled in advance before the filter screen can be taken out from the air inlet. The disassembly operation of the air inlet pipe is complex, resulting in an increase in the disassembly difficulty for maintenance personnel and making it inconvenient to disassemble the filter screen;

[0048] Second, between the bodies of the heat pump water heater without installation, the filter screen is detachably installed inside the heat pump water heater. After that, the bodies of the heat pump water heater are assembled to encapsulate the interior of the heat pump water heater. When disassembling the filter screen, it is necessary to pre-disassemble the body of the heat pump water heater before the filter screen can be taken out from the interior of the heat pump water heater. The operation steps are complicated and it is not convenient to disassemble.

[0049] Based on this, in the present utility model, by providing a housing member 200 and a filter screen assembly 300 on the outer side of the plate body 100, when disassembling the filter screen assembly 300, the filter screen assembly 300 is withdrawn from the receiving cavity 210 along the opening 220, so that the filter screen 310 does not block the air inlet 110. It is possible to abandon the traditional disassembly method that requires pre-disassembling the air inlet pipe or the body. The maintenance personnel can directly withdraw the filter screen assembly 300 on the outer side of the plate body 100. The operation is simple, convenient and fast, and it is convenient to disassemble the filter screen assembly 300.

[0050] Refer to Figures 1 to 2 , Figure 1 is a schematic structural view of a heat pump water heater according to an embodiment of the present utility model, Figure 2 is an exploded view of a heat pump water heater according to an embodiment of the present utility model, Figure 1 In, the filter screen 310 blocks the air inlet 110. In this embodiment, the box body assembly includes a top plate, a bottom plate 520 and a plurality of side plates 510. Along the up and down direction, the top plate and the bottom plate 520 are oppositely arranged, the top plate is located above the bottom plate 520, the upper end of the side plate 510 is connected to the top plate, the lower end of the side plate 510 is connected to the bottom plate 520, and the top plate, the bottom plate 520 and the plurality of side plates 510 enclose to form the inner cavity of the box body assembly.

[0051] It should be noted that the plate body 100 can be the top plate or any one of the side plates 510.

[0052] It should be noted that the filter screen assembly 300 is a flat structure as a whole. When the filter screen assembly 300 exits the receiving cavity 210, the dust attached to the filter screen 310 will not be raised, and there is no need to worry about the problem of dust raising during disassembly and maintenance, which can avoid the internal environment of the receiving cavity 210 being polluted by the dust on the filter screen 310.

[0053] It can be understood that when installing the filter screen assembly 300, the wire frame 320 is inserted into the receiving cavity 210 through the opening 220. After that, the wire frame 320 is moved so that the filter screen 310 blocks the air inlet 110. The filter screen 310 can filter and screen out the air entering the receiving cavity 210 from the ventilation opening 230. The operation is simple, convenient and fast, and it is convenient to install the filter screen assembly 300.

[0054] It should be noted that along the thickness direction of the plate body 100, the outer side and the inner side of the plate body 100 are oppositely arranged. The inner side of the plate body 100 refers to the side of the plate body 100 facing the inner cavity of the heat pump water heater, and the outer side of the plate body 100 refers to the side of the plate body 100 facing away from the inner cavity of the heat pump water heater.

[0055] It should be noted that the wire frame 320 can also be rotatably arranged on the housing part 200. When the wire frame 320 rotates, the filter screen 310 enters or exits the accommodation cavity 210. The filter screen 310 is detachably arranged on the wire frame 320. When the filter screen 310 exits the accommodation cavity 210, the connection between the filter screen 310 and the wire frame 320 can be disconnected to detach the filter screen 310, which is also convenient for detaching the filter screen 310.

[0056] Refer to Figures 3 to 6 , Figure 3 is an exploded schematic view of the plate body 100 and the filter screen assembly 300 according to an embodiment of the present invention, Figure 4 is an assembled schematic view of the plate body 100 and the filter screen assembly 300 according to an embodiment of the present invention, Figure 5 is Figure 4 the top view of Figure 6 is Figure 5 the cross-sectional view taken along line A-A in Figure 3 wherein the filter screen 310 is drawn out of the accommodation cavity 210 in Figure 4 and the filter screen 310 blocks the air inlet 110 in

[0057] It should be noted that the opening 220 and the ventilation opening 230 can be arranged on different sides of the housing part 200. For example, the ventilation opening 230 is arranged on the side of the housing part 200 facing away from the air inlet 110, and the opening 220 is arranged on the side of the housing part 200 located in the circumferential direction of the air inlet 110. In addition, the positions of the opening 220 and the ventilation opening 230 can be interchanged, which will not be elaborated here.

[0058] It should be noted that when the filter screen assembly 300 enters the accommodation cavity 210 along the opening 220, the filter screen 310 is located between the air inlet 110 and the ventilation opening 230, so that the filter screen 310 can block the air inlet 110 or the ventilation opening 230.

[0059] To avoid the situation where the filter screen 310 exits the accommodation cavity 210 under unexpected circumstances, a limiting structure is provided between the frame 320 and the housing member 200 to restrict the frame 320 from exiting the accommodation cavity 210, which can improve the reliability of the heat pump water heater. During the process of the filter screen 310 being pulled out of the accommodation cavity 210, an external force is applied to the frame 320 in the direction of exiting the accommodation cavity 210. Under the action of the external force, the limiting structure disconnects, enabling the filter screen assembly 300 to move in the direction of exiting the accommodation cavity 210, and the filter screen assembly 300 can be pulled out of the accommodation cavity 210, facilitating the maintenance personnel to disassemble the filter screen assembly 300.

[0060] It should be noted that the limiting structure can also be provided between the frame 320 and the plate body 100, as long as it can restrict the frame 320 from moving in the direction of exiting the accommodation cavity 210, which will not be elaborated here.

[0061] Refer to Figures 7 to 9 , Figure 7 For Figure 4 the side view of Figure 8 For Figure 7 the sectional view taken along line B - B in Figure 9 For Figure 8 the partial enlarged view of part C in

[0062] It should be pointed out that, for example Figure 9 as shown in

[0063] During the process of inserting the filter assembly 300 into the receiving cavity 210, the second guiding portion 3212 is in sliding contact with the third guiding portion 241 to guide the first limiting protrusion 321 to cross the second limiting protrusion 240 along the direction of entering the receiving cavity 210, so that the first guiding portion 3211 can abut against the fourth guiding portion 242, enabling the filter 310 to stably block the air inlet 110.

[0064] During the process of extracting the filter assembly 300 from the receiving cavity 210, the first guiding portion 3211 is in sliding contact with the fourth guiding portion to guide the first limiting protrusion 321 to cross the second limiting protrusion 240 along the direction of exiting the receiving cavity 210, so that the first limiting protrusion 321 is separated from the second limiting protrusion 240, facilitating the disassembly of the filter 310.

[0065] Of course, in some specific embodiments, any one of the first guiding portion, the second guiding portion, the third guiding portion, and the fourth guiding portion can also be replaced with a rounded corner structure, which will not be elaborated herein.

[0066] As another embodiment, the limiting structure may further include a limiting hole provided on the frame 320 and a limiting block provided on the housing member 200. When the filter 310 blocks the air inlet 110, the limiting block is received in the limiting hole and can abut against the side wall of the limiting hole to limit the movement of the frame 320 along the direction of exiting the receiving cavity 210, which can also improve the use reliability of the heat pump water heater. It can be understood that the positions of the limiting hole and the limiting block can be interchanged, that is, the limiting hole is provided on the housing member 200 and the limiting block is provided on the frame 320, which will not be elaborated herein.

[0067] As another embodiment, the limiting structure may further include a first magnet provided on the frame 320 and a second magnet provided on the housing member 200. The magnetism of the first magnet is different from that of the second magnet, so that the first magnet can magnetically attract the second magnet. When the filter 310 blocks the air inlet 110, the first magnet and the second magnet are attracted to each other, which can also limit the frame 320 from exiting the receiving cavity 210. During the process of extracting the filter 310 from the receiving cavity 210, only an external force greater than the magnetic attraction force between the first magnet and the second magnet is required, facilitating the disassembly of the filter 310. Of course, in some other specific embodiments, the frame 320 can also be fixed by bolts or screws and other components, which will not be elaborated herein.

[0068] In this embodiment, one end of the first limiting protrusion 321 is connected to the mesh frame 320, and the opposite end of the first limiting protrusion 321 is a free end. One end of the second limiting protrusion 240 is connected to the housing member 200, and the opposite end of the second limiting protrusion 240 is a free end. When the first limiting protrusion 321 abuts against the second limiting protrusion 240, the free ends of both the first limiting protrusion 321 and the second limiting protrusion 240 can be deformed to reduce the sliding resistance of the mesh frame 320, facilitating the installation or disassembly of the filter assembly 300.

[0069] It should be noted that the positions of the first limiting protrusion 321 and the second limiting protrusion 240 can be interchanged, that is, the first limiting protrusion 321 is provided on the housing member 200 and the second limiting protrusion 240 is provided on the mesh frame 320, which will not be elaborated here.

[0070] In this embodiment, for example Figure 1 As shown, in order to reduce the heat dissipation of the heat pump water heater, a heat insulation cover 400 is provided on the housing member 200. The heat insulation cover 400 covers the housing member 200 and is made of heat insulation material, so that the heat insulation cover 400 can isolate the heat transfer. After connecting the air inlet pipe, the heat insulation cover 400 is connected to the heat insulation layer of the air inlet pipe, which can improve the aesthetic degree of the heat pump water heater.

[0071] For example, an avoidance opening 410 is provided on the heat insulation cover 400. The avoidance opening 410 communicates with the opening 220, and the size of the avoidance opening 410 matches the size of the opening 220. When the filter assembly 300 is inserted into the accommodation cavity 210, the mesh frame 320 passes through the avoidance opening 410 and the opening 220 in sequence, so that the filter screen 310 can be inserted into the accommodation cavity 210, facilitating the installation of the filter assembly 300.

[0072] Referring to Figure 10 、 Figure 11 , Figure 10 is a schematic structural diagram of a filter assembly 300 according to an embodiment of the present invention, Figure 11 is an exploded schematic diagram of a mesh frame 320 according to an embodiment of the present invention. In order to improve the sealing performance of the box body assembly, a sealing member 330 is provided on one side of the mesh frame 320. When the filter screen 310 blocks the air inlet 110, the mesh frame 320 closely adheres to the periphery of the avoidance opening 410 to block the avoidance opening 410, preventing external dust or rainwater from flowing into the accommodation cavity 210 through the gap between the mesh frame 320 and the periphery of the avoidance opening 410. On the one hand, it can prevent dust in the air from entering the interior of the heat pump water heater body through the avoidance hole without being filtered by the filter screen 310, improving the cleanliness of the interior of the heat pump water heater body. On the other hand, it can extend the maintenance cycle of the heat pump water heater and reduce the repair frequency of the heat pump water heater, thereby improving the service life of the heat pump water heater.

[0073] It should be noted that, for the convenience of manufacturing the mesh frame 320, the seal 330 and the mesh frame 320 are set as a split structure, which can simplify the mold structure to facilitate the manufacturing of the mesh frame 320.

[0074] It should be noted that, for example Figure 11 As shown, for the convenience of assembling the seal 330 and the mesh frame 320, an installation structure is provided between the seal 330 and the mesh frame 320. The installation structure includes an installation groove 332 provided on the seal 330 and an installation block 324 provided on the mesh frame 320. The installation groove 332 is of a T-shaped structure, and the installation block 324 correspondingly is of a T-shaped structure. The installation block 324 is accommodated in the installation groove 332 and can abut against the side wall of the installation groove 332, so that the seal 330 and the mesh frame 320 can be relatively fixed, and there is no need to assemble the seal 330 and the mesh frame 320 by bolting, which can improve the assembly efficiency of the mesh frame 320. Of course, in some other specific embodiments, the seal 330 and the mesh frame 320 can also be an integral structure, and the seal 330 and the mesh frame 320 can be integrally formed by injection molding, which can reduce the number of molds to reduce the production and manufacturing cost of the molds, thereby reducing the production and manufacturing cost of the box assembly.

[0075] It should be noted that the filter screen 310 is connected to the mesh frame 320 by bonding, which can facilitate the assembly of the filter screen 310, thereby improving the production efficiency of the filter screen assembly 300. Of course, in some specific embodiments, the filter screen 310 can also be pre-installed in the mold, and then the mesh frame 320 is injection molded through the mold, so that the mesh frame 320 and the filter screen 310 are an integral structure, which can also facilitate the production of the filter screen assembly 300 and will not be elaborated here. In addition, the filter screen 310 can be a flat filter screen, a corrugated filter screen or a W-shaped filter screen, which will not be elaborated here.

[0076] For example Figure 10 As shown, in order to reduce the deformation of the mesh frame 320, a reinforcing frame 340 is provided on the mesh frame 320. The reinforcing frame 340 is connected to the outer peripheral side of the mesh frame 320, and the thickness of the reinforcing frame 340 is greater than the thickness of the mesh frame 320, which can improve the structural strength of the mesh frame 320 to prevent the mesh frame 320 from swinging relatively when the maintenance personnel disassemble the filter screen assembly 300, and can prevent the dust attached to the filter screen 310 from being raised.

[0077] It can be understood that a plurality of spaced-apart hollow holes are provided on the mesh frame 320, and the filter screen 310 covers the plurality of hollow holes. On the one hand, it can increase the connection strength of the filter screen 310 to prevent the filter screen 310 from collapsing. On the other hand, it can ensure the effective ventilation area of the filter screen assembly 300 and can effectively reduce the resistance formed by the filter screen 310 during air intake.

[0078] In order to improve the waterproof and dustproof performance of the heat pump water heater, a sealing structure is provided between the seal 330 and the heat preservation cover 400. The sealing structure is used to seal the avoidance opening 410 to prevent external dust or rainwater from entering the accommodation cavity 210 through the gap between the seal 330 and the periphery of the avoidance opening 410. For example, the sealing structure includes a gasket provided on the periphery of the avoidance opening 410. The gasket extends along the circumferential direction of the avoidance opening 410. When the filter screen 310 blocks the air inlet 110, the gasket is clamped between the seal 330 and the heat preservation cover 400 to eliminate the gap between the seal 330 and the periphery of the avoidance opening 410, and can seal the avoidance opening 410 in all directions, thereby preventing external dust or rainwater from entering the interior of the heat pump water heater from the connection between the heat preservation cover 400 and the seal 330.

[0079] It should be noted that the gasket can be configured as a sponge or a rubber strip. The gasket can be installed on the periphery of the avoidance opening 410 by bonding, which can facilitate the installation of the gasket and improve the assembly efficiency of the box body assembly. Of course, in some other specific embodiments, the gasket can also be replaced with a sealing ring as long as it can improve the waterproof and dustproof performance of the heat pump water heater, and details will not be elaborated here.

[0080] In this embodiment, in order to facilitate the replacement of the heat preservation cover 400, the heat preservation cover 400 is detachably arranged on the housing part 200. When the heat preservation cover 400 is damaged or loses its heat preservation function, the maintenance personnel can separately disassemble the heat preservation cover 400 without having to replace the housing part 200 and the heat preservation cover 400 as a whole, which can not only facilitate the replacement of the heat preservation cover 400 but also reduce the maintenance cost of the box body assembly.

[0081] For example, the heat preservation cover 400 is detachably installed on the housing part 200 through fasteners. The heat preservation cover 400 is provided with through holes, and the housing part 200 is provided with threaded holes corresponding to the through holes. The fasteners pass through the through holes and one end of the fasteners is threadedly engaged with the threaded holes, so that the maintenance personnel can disassemble the heat preservation cover 400 by loosening the fasteners. The operation is simple, convenient and fast, which can facilitate the disassembly of the heat preservation cover 400.

[0082] It should be noted that the fasteners can be bolts or screws and the like. Two fasteners are configured, and the two fasteners are arranged diagonally, which can not only reduce the number of fasteners but also improve the assembly efficiency of the heat preservation cover 400.

[0083] As another implementation manner, the heat preservation cover 400 can also be detachably connected to the housing part 200 through a snap connection structure. The snap connection structure includes hooks provided on the heat preservation cover 400 and clamping grooves provided on the housing part 200. The hook parts of the hooks are accommodated in the clamping grooves and can be abutted against the side walls of the clamping grooves, which can also facilitate the installation or disassembly of the heat preservation cover 400.

[0084] In this embodiment, the housing member 200 and the plate body 100 are of an integral structure. The housing member 200 and the plate body 100 can be integrally formed by injection molding or die-casting, which can reduce the number of molds, so as to reduce the production and manufacturing cost of the molds, and thus reduce the production and manufacturing cost of the box assembly. Of course, in some other specific embodiments, the housing member 200 can also be connected to the plate body 100 by bolting or welding. Among them, the welding directions include but are not limited to resistance welding, ultrasonic welding or laser welding.

[0085] In this embodiment, in order to facilitate the maintenance personnel to pull the mesh frame 320, a handle 331 is provided on the side of the seal 330 facing away from the plate body 100. The handle 331 is configured as a groove structure. The maintenance personnel can apply force to the side wall of the groove structure so that the mesh frame 320 can withdraw from the accommodation cavity 210. When the filter screen 310 is withdrawn from the accommodation cavity 210, the operation space of the maintenance personnel is increased, so as to facilitate the disassembly of the filter screen assembly 300.

[0086] As another implementation manner, the handle 331 can also be replaced by a grip. The grip is provided on the side of the seal 330 facing away from the opening 220. The maintenance personnel can hold the grip to apply an external force to the seal 330, so that the mesh frame 320 can withdraw from or enter the accommodation cavity 210, which can facilitate the installation or disassembly of the filter screen assembly 300.

[0087] In order to improve the sliding stability of the mesh frame 320, a guiding structure is provided between the mesh frame 320 and the housing member 200. The guiding structure can guide the filter screen assembly 300 to move in the direction of entering or withdrawing from the accommodation cavity 210. On the one hand, it can position the relative position between the mesh frame 320 and the housing member 200 so that the filter screen 310 can completely block the air inlet 110 to prevent the situation that part of the air enters the fan interior without being filtered by the filter screen 310. On the other hand, it can improve the connection reliability between the first limiting protrusion 321 and the second limiting protrusion 240 to prevent the situation that the first limiting protrusion 321 and the second limiting protrusion 240 are automatically separated under unexpected circumstances, and can improve the installation stability of the filter screen assembly 300.

[0088] For example Figure 9 、 Figure 10 As shown, along the length direction of the opening 220, the mesh frame 320 has a first frame 322 and a second frame 323 which are oppositely arranged. During the process of inserting the filter screen assembly 300 into the accommodation cavity 210, the first frame 322 abuts against the side wall of the accommodation cavity 210, and the second frame 323 abuts against the other opposite side wall of the accommodation cavity 210, which can guide the mesh frame 320 to move in the direction of entering or withdrawing from the accommodation cavity 210, and can both position the relative position between the mesh frame 320 and the housing member 200 and improve the connection reliability between the first limiting protrusion 321 and the second limiting protrusion 240.

[0089] It should be noted that there are two first limiting protrusions 321 configured. The two first limiting protrusions 321 are arranged oppositely along the length direction of the opening 220. One of the two first limiting protrusions 321 is arranged on the first frame 322, and the other is arranged on the second frame 323. Correspondingly, there are two second limiting protrusions 240, which can improve the connection reliability between the first limiting protrusion 321 and the second limiting protrusion 240.

[0090] As another implementation manner, the guiding structure can also be a structure in which a waist-shaped groove cooperates with a guiding pin. The waist-shaped groove is arranged on the side wall of the accommodating cavity 210, and the guiding pin is arranged on the mesh frame 320. The length direction of the waist-shaped groove extends along the sliding direction of the filter screen assembly 300. One end of the guiding pin is accommodated in the waist-shaped groove and can abut against the side wall of the waist-shaped groove, and can also guide the mesh frame 320 to move in the direction of entering or exiting the accommodating cavity 210, which will not be elaborated here. In addition, the positions of the waist-shaped groove and the guiding pin can be interchanged, that is, the waist-shaped groove is arranged on the mesh frame 320, and the guiding pin is arranged on the side wall of the accommodating cavity 210, which is not limited here.

[0091] As another implementation manner, the guiding structure can also be a linear module structure, which can guide the mesh frame 320 to move in the direction of entering or exiting the accommodating cavity 210, which will not be elaborated here.

[0092] A heat pump water heater according to an embodiment of the present utility model includes the box body assembly of the above embodiment.

[0093] The heat pump water heater according to the embodiment of the present utility model adopts the box body assembly of the embodiment of the first aspect. By arranging the housing part 200 and the filter screen assembly 300 outside the plate body 100, when the filter screen assembly 300 is disassembled, the filter screen assembly 300 is withdrawn from the accommodating cavity 210 along the opening 220, so that the filter screen 310 does not block the air inlet 110. It can abandon the traditional disassembly method that requires pre-disassembling the air inlet pipe or disassembling the fuselage. The maintenance personnel can directly withdraw the filter screen assembly 300 outside the plate body 100. The operation is simple, convenient and fast, and it is convenient to disassemble the filter screen assembly 300.

[0094] Since the heat pump water heater adopts all the technical solutions of the box body assembly of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated here.

[0095] The above has described the embodiments of the present utility model in detail with reference to the drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which it pertains, various changes can also be made without departing from the gist of the present utility model.

Claims

1. A box assembly for a heat pump water heater, characterized in that: include: The plate body is provided with an air inlet; A shell member is arranged on the plate body and covers the air inlet end of the air inlet, the shell member is provided with a receiving cavity, an opening and a vent, and the opening, the vent and the air inlet are all connected with the receiving cavity; The filter assembly comprises a filter and a mesh frame, wherein the filter is arranged on the mesh frame, and the filter assembly can be inserted into or withdrawn from the accommodating cavity along the opening. When the filter assembly is inserted along the opening, the filter is located in the accommodating cavity so that the filter blocks the air inlet or the vent.

2. The box assembly according to claim 1, characterized in that: A limiting structure is provided between the screen frame and the shell member, and the limiting structure is used to limit the filter screen assembly from exiting the accommodating cavity.

3. The box assembly according to claim 2, characterized in that: The limiting structure includes a first limiting protrusion arranged on the screen frame and a second limiting protrusion arranged on the shell member. Along the direction in which the filter assembly exits the accommodating cavity, the first limiting protrusion abuts against the second limiting protrusion, and the first limiting protrusion is located on the side of the second limiting protrusion away from the opening.

4. The box assembly according to claim 1, characterized in that: The box assembly also includes a heat-insulating cover, which is arranged on the shell member and is provided with a relief opening for avoiding the opening.

5. The box assembly according to claim 4, characterized in that: The heat-insulating cover is detachably arranged on the shell member.

6. The box assembly according to claim 4, characterized in that: The filter assembly also includes a seal connected to one side of the screen frame, and the seal is used to seal the avoidance opening.

7. The box assembly according to claim 6, characterized in that: A handle is provided on the side of the sealing member facing away from the plate body.

8. The box assembly according to claim 1, characterized in that: The shell member and the plate body are an integrated structure.

9. The box assembly according to claim 1, characterized in that: A guide structure is provided between the screen frame and the housing member, and the guide structure is used to guide the screen frame to move along a direction of entering or exiting the accommodating cavity.

10. The box assembly according to claim 9, characterized in that: The guide structure includes a first frame and a second frame provided on the screen frame. The first frame and the second frame are arranged opposite to each other along the length direction of the opening. The first frame and the second frame are respectively in contact with opposite side walls of the accommodating cavity.

11. Heat pump water heater, characterized in that: The invention comprises a box assembly as described in any one of claims 1 to 10.

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