Head assembly for heat pump water heater, and heat pump water heater

Abstract

The present application relates to the field of heat pump water heater, and provides a head assembly of heat pump water heater and a heat pump water heater, including a base, a fan bracket, a fan and an air duct, where the base is provided with an exhaust port; the fan bracket is mounted at the base; the fan is mounted at the fan bracket; the air duct is mounted at the base, an air inlet is provided at a side of the air duct facing the fan, an air outlet is provided at a side of the air duct facing the base, and the air outlet communicates with the exhaust port. In the head assembly of heat pump water heater and a heat pump water heater provided by the present application, the exhaust port is provided at the base, and the heat-exchanged air is guided to the base through the air duct and then directly discharged from the exhaust port to avoid the airflow being directly sprayed onto the wall, which causes the wall to become moldy.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The present application claims priority to Chinese patent application No. 2023117427605 filed on December 18, 2023, entitled "Head Assembly of Heat Pump Water Heater and Heat Pump Water Heater", and to Chinese patent application No. 2023234521266 filed on December 18, 2023, entitled "Head Assembly of Heat Pump Water Heater and Heat Pump Water Heater", which are hereby incorporated by reference in their entirety.FIELD

[0002] The present application relates to the field of heat pump water heater, and in particular, to a head assembly of heat pump water heater and a heat pump water heater.BACKGROUND

[0003] A head assembly of a traditional heat pump water heater comprises parts such as a housing, an evaporator, etc. The housing is provided with an air inlet and an exhaust port. When the heat pump water heater is operating, air enters the housing through the air inlet, directly exchanges heat with the evaporator, and then is discharged through the exhaust port after heat exchange. The heat pump water heater is generally hung on a wall, and the air blown out of an air outlet is directly sprayed on the wall. It is easy to cause mold on the wall since the air blown out of the air outlet contains water vapor.BRIEF SUMMARY

[0004] The present application aims to solve at least one of the problems in the related art. The present application provides a head assembly of heat pump water heater and the heat pump water heater itself, which guide heat-exchanged air to be discharged from a base to prevent mold on a wall.

[0005] The present application provides a head assembly of a heat pump water heater, comprising: a base provided with an exhaust port; a fan bracket mounted at the base; a fan mounted at the fan bracket; and an air duct mounted at the base, where an air inlet is provided at a side of the air duct facing the fan, an air outlet is provided at a side of the air duct facing the base, and the air outlet communicates with the exhaust port.

[0006] In an embodiment, an air inflow passage and an air outflow passage are provided inside the air duct.

[0007] In an embodiment, an airflow in the air inflow passage flows in a transverse direction.

[0008] In an embodiment, an airflow in the air outflow passage flows in a longitudinal direction.

[0009] In an embodiment, an arc-shaped transition air duct is provided inside the air duct, the transition air duct is located between the air inflow passage and the air outflow passage and communicates the air inflow passage with the air outflow passage.

[0010] In an embodiment, the air duct comprises: a first air duct plate; a second air duct plate; and a support seat, where a first air guide plate is provided at a top of the support seat, and the first air guide plate is connected to the first air duct plate.

[0011] In an embodiment, the air inflow passage and the air inlet are formed between the first air guide plate and the first air duct plate.

[0012] In an embodiment, a second air guide plate is provided at a side of the support seat, and the second air guide plate is connected to the second air duct plate.

[0013] In an embodiment, the air outflow passage and the air outlet are formed between the second air guide plate and the second air duct plate.

[0014] In an embodiment, a support plate is provided at a side of the support seat facing the fan bracket.

[0015] In an embodiment, the support plate is in fit with the fan bracket.

[0016] In an embodiment, a support cavity is formed between the support plate, the first air guide plate and the second air guide plate.

[0017] In an embodiment, reinforcement ribs are provided inside the support cavity.

[0018] In an embodiment, an evaporator top cover is provided at a side of a top of the fan bracket facing away from the air duct.

[0019] In an embodiment, the head assembly comprises an evaporator.

[0020] In an embodiment, the evaporator is mounted between the evaporator top cover and the base.

[0021] In an embodiment, a mount groove is provided at a bottom surface of the evaporator top cover.

[0022] In an embodiment, a top of the evaporator is inserted and mounted into the mount groove.

[0023] In an embodiment, the evaporator comprises at least two arc segments.

[0024] In an embodiment, the base comprises a chassis and a chassis cover.

[0025] In an embodiment, the chassis is provided with a dismount-mount hole for the air duct, and the chassis cover is detachably mounted at the dismount-mount hole.

[0026] In an embodiment, the air duct is detachably mounted at the base.

[0027] In an embodiment, the air duct is detachably mounted at the fan bracket, and the fan bracket comprises: a bracket body; and an assembly plate fixed to a side of the bracket body facing the air duct; where an avoidance notch is provided at a top of the air duct, and the avoidance notch is used to avoid interference with the fan during the mounting and dismounting of the air duct; and when the air duct is fixed to the bracket body, the assembly plate is assembled in the avoidance notch.

[0028] In an embodiment, an avoidance groove is provided at a side of the air duct facing away from the fan bracket, and the avoidance groove is used to avoid interference with internal parts of a heat pump water heater.

[0029] The present application further provides a heat pump water heater, comprising the head assembly of heat pump water heater.

[0030] The above one or more solutions in the embodiments of the present application have at least one of the following technical effects: the exhaust port is provided at the base, and the heat-exchanged air is guided to the base through the air duct and then directly discharged from the exhaust port to avoid the airflow from directly spraying onto the wall, which causes mold on the wall.

[0031] Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the present application.BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to illustrate solutions in the embodiments of the present application or in the related art more clearly, the drawings used in the description of the embodiments or the related art are briefly described below. The drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without any creative work for those skilled in the art. FIG. 1 is a schematic diagram of mounting an air duct of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 2 is a three-dimensional schematic structural diagram of an air duct of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 3 is a three-dimensional schematic structural diagram of a fan bracket for heat pump water heater according to an embodiment of the present application; FIG. 4 is another schematic diagram of mounting an air duct of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 5 is an exploded view of a base of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 6 is a three-dimensional schematic structural diagram of an upper bracket of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 7 is a schematic diagram of mounting of an enclosure plate of a head assembly of heat pump water heater according to an embodiment of the present application; FIG. 8 is a three-dimensional schematic structural diagram of a splice plate of a head assembly of heat pump water heater according to an embodiment of the present application; and FIG. 9 is a three-dimensional schematic structural diagram of a chassis of a head assembly of heat pump water heater according to an embodiment of the present application.

[0033] Reference numerals: 100: base; 110: exhaust port; 120: chassis; 121: dismount-mount hole; 122: dismount-mount notch; 130: chassis cover; 140: fixation step; 141: position post; 150: finger buckle portion; 200: fan bracket; 210: evaporator top cover; 211: mount groove; 220: bracket body; 221: lower bracket; 222: upper bracket; 2221: first assembly surface; 2222: second assembly surface; 223: fan port; 224: bracket guide rail; 230: assembly plate; 231: first buckle; 240: bottom plate; 250: top plate; 300: fan; 400: air duct; 410: air inflow passage; 411: air inlet; 420: air outflow passage; 421: air outlet; 430: first air duct plate; 440: second air duct plate; 450: support seat; 451: first air guide plate; 452: second air guide plate; 453: support plate; 454: support cavity; 455: reinforcement rib; 460: avoidance notch; 470: avoidance groove; 480: vertical plate; 490: second buckle; 510: connect component; 520: mount portion; 530: air duct guide rail; 600: evaporator; 700: post; 710: bracket guide groove; 810: electric control box; 820: compressor; 830: upper cover; 831: protrusion; 900: enclosure plate; 910, splice plate; 911: snap plate; 920: mount space. DETAILED DESCRIPTION

[0034] Embodiments of the present application are further described in detail below with reference to the drawings and embodiments. The following embodiments are intended to illustrate the application, but are not intended to limit the scope of the application.

[0035] In the description of the embodiments of the present application, it is to be noted that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or component stated must have a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting the embodiments of the present application. Moreover, the terms "first", "second", "third", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless explicitly specified and defined otherwise, the terms "connected to" and "connected" shall be understood broadly, for example, it may be either fixedly connected or detachably connected, or can be integrated; it may be either mechanically connected, or electrically connected; it may be either directly connected, or indirectly connected through an intermediate medium. The specific meanings of the terms above in the present application can be understood by a person skilled in the art in accordance with specific conditions.

[0037] In the embodiments of this application, unless otherwise clearly stated and defined, the first feature being located "on" or "under" the second feature means that the first feature is in direct contact with the second feature or the first feature is in contact with the second feature by an intervening media. In addition, the first feature is "on", "above" and "over" the second feature can refer to that the first feature is directly above or obliquely above the second feature, or simply refer to that the level height of the first feature is higher than that of the second feature. The first feature is "under", "below" and "beneath" the second feature can refer to that the first feature is directly below or obliquely below the second feature, or simply refer to that the level height of the first feature is lower than that of the second feature.

[0038] In the description of this specification, description with reference to the terms "one embodiment", "some embodiments", "an example", "specific example", "some examples" and the like, refers to that specific features, structures, materials or characteristics described in combination with an embodiment or an example are comprised in at least one embodiment or example according to the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to a same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described can be combined in any 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 this specification, as well as the features of the different embodiments or examples, without conflicting each other.

[0039] A heat pump water heater is also referred to as an "air source heat pump water heater" and "air energy water heater". The heat pump water heater absorbs low-temperature heat in the air, a refrigerant in an evaporator is gasified and turned into low-temperature steam, the low-temperature steam is compressed by a compressor to be converted into high-temperature, high-pressure gas, and then the compressed high-temperature heat energy is converted by a heat exchanger to heat water. Therefore, compared with traditional electric water heater and gas water heater, the heat pump water heater has many advantages such as high efficiency, energy saving, environmental protection, and safety.

[0040] The traditional heat pump water heater provides parts such as a compressor, an evaporator, and a fan at a base, and a housing is provided at the base to protect the internal parts. Since the water heater needs to exchange a large amount of air with the outside during operation, an air inlet and exhaust port are provided on a large range of surrounding sides of the housing. When the heat pump water heater is operating, air enters the housing through the air inlet, directly exchanges heat with the evaporator, and then is discharged through the exhaust port after heat exchange. The heat pump water heater is generally hung on a wall, and the air blown out of the air outlet is directly sprayed on the wall. It is easy to cause mold on the wall since the air blown out of the air outlet contains water vapor.

[0041] Referring to FIG. 1 to FIG. 3, an embodiment of the present application provides a head assembly of heat pump water heater, comprising a base 100, a fan bracket 200, a fan 300 and an air duct 400. The base 100 is provided with an exhaust port 110; the fan bracket 200 is mounted at the base 100; the fan 300 is mounted at the fan bracket 200; the air duct 400 is mounted at the base 100, and an air inlet 411 is provided at a side of the air duct 400 facing the fan 300, an air outlet 421 is provided at a side of the air duct 400 facing the base 100, and the air outlet 421 communicates with the exhaust port 110.

[0042] The exhaust port 110 is provided at the base 100, and the heat-exchanged air is guided to the base 100 through the air duct 400 and then directly discharged from the exhaust port 110 to avoid the airflow from directly spraying onto the wall, which causes mold on the wall.

[0043] The fan bracket 200 and the air duct 400 are fixedly mounted at the base 100, and the exhaust port 110 is provided at the base 100, which has both the function of bearing and exhausting air. The fan 300 is mounted at the fan bracket 200, and the fan 300 is used to drive the air in the water heater to flow for improving the heat exchange efficiency between the water heater and the outside. The air duct 400 may adjust the direction of the air flow. The air inlet 411 is provided at the side of the air duct 400 facing the fan 300, the air outlet 421 is provided at the side of the air duct 400 facing the base 100, and the air outlet 421 communicates with the exhaust port 110 to guide the heat-exchanged airflow to be discharged from the exhaust port 110 of the base 100.

[0044] In an embodiment, the exhaust port 110 and the air duct 400 are arranged correspondingly and the airflow of the air duct 400 may be discharged. A shape of the exhaust port 110 may match with the air outlet 421 of the air duct 400 to discharge air and an area of the exhaust port 110 may also be greater than or equal to the air outlet 421 of the air duct 400 as long as the air may be discharged. The air duct 400 may be directly connected to the exhaust port 110 of the base 100 to prevent air leakage, and the air duct 400 may also be indirectly connected to the base 100.

[0045] In an embodiment, the downward air outlet manner may prevent the airflow from spraying onto the user, which improves the user experience, and is beneficial to hide the exhaust port 110 and improve the aesthetics.

[0046] In an embodiment, as shown in FIG. 1, partition plates are provided at the exhaust port 110, and the partition plates are formed by connecting a plurality of rib plates in a grid shape to prevent hands from inserting while achieving exhaust. The partition plates may improve the rigidity and stability of the base 100 at the exhaust port 110 to effectively resist the influence of air pressure and air torque and prevent deformation. The grid structure formed between the plurality of rib plates may effectively reduce the vibration and noise of the exhaust port 110.

[0047] In an embodiment, referring to FIG. 2, an air inflow passage 410 and an air outflow passage 420 are provided inside the air duct 400, and the airflow in the air inflow passage 410 flows in a transverse direction, and airflow in the air outflow passage 420 flows in a longitudinal direction.

[0048] The air flows in the transverse direction under action of the fan 300, enters the air inflow passage 410, and is then blown out from the air outflow passage 420. Since the airflow in the air inflow passage 410 flows in the transverse direction and the airflow in the air outflow passage 420 flows in the longitudinal direction, the airflow in the transverse direction is converted into the airflow in the longitudinal direction to guide the air to the exhaust port 110 of the base 100, which changes the flowing direction of air, and prevents the air flowing in the transverse direction from being directly discharged from the water heater and causing damage to the wall.

[0049] In an embodiment, an arc-shaped transition air duct is provided inside the air duct 400, the transition air duct is provided between the air inflow passage 410 and the air outflow passage 420 and communicates with the air inflow passage 410 and the air outflow passage 420.

[0050] The transition air duct plays a role in connection between the air inflow passage 410 and the air outflow passage 420. The arc-shaped design reduces the flow resistance of the air in the transition air duct, changes the flowing direction, and may effectively reduce noise.

[0051] In an embodiment, the air duct 400 comprises a first air duct plate 430, a second air duct plate 440 and a support seat 450, where a first air guide plate 451 is provided at a top of the support seat 450, the first air guide plate 451 is connected to the first air duct plate 430 to form the air inlet 411, and the air inflow passage 410 is provided between the first air guide plate 451 and the first air duct plate 430. A second air guide plate 452 is provided at a side of the support seat 450, the second air guide plate 452 is connected to the second air duct plate 400 to form the air outlet 421, and the air outflow passage 420 is provided between the second air guide plate 452 and the second air duct plate 440.

[0052] The first air guide plate 451 of the support seat 450 forms a part of the air inflow passage 410, and the second air guide plate 452 of the support seat 450 forms a part of the air outflow passage 420. The support seat 450 plays a role in supporting, and the air duct 400 may be placed independently to prevent the air duct 400 from collapsing. For example, during maintenance, after the air duct 400 is dismounted, the air duct 400 may be directly placed on the ground or a tabletop without a need for an additional fix object to support the air duct 400, which prevents the air duct 400 from collapsing and being damaged. In addition, due to the support effect of the support seat 450, the stability of the air duct 400 may be improved during mounting, which prevents collapse or tilting, and makes the mount process of the air duct 400 more efficient and faster.

[0053] As shown in FIG. 2, the air duct 400 also comprises an arc plate, and the arc plate is used to connects the first air duct plate 430 and the second air duct plate 440 to connect the air inflow passage 410 and the air outflow passage 420.

[0054] In an embodiment, a support plate 453 is provided at a side of the support seat 450 facing the fan bracket 200, and the support plate 453 is in contact with the fan bracket 200.

[0055] The support plate 453 plays a role in connecting the fan bracket 200, and the support plate 453 is in contact with the fan bracket 200, which increases the support force of the fan bracket 200 on the support plate 453, improves the overall stability and bearing capacity of the air duct 400, and ensures that the air duct 400 does not generate excessive vibration or deformation during operation.

[0056] In an embodiment, the fan bracket 200 comprises a bracket body 220, a support surface is provided at a side of the bracket body 220 facing the air duct 400, and the support surface is in contact with the support plate 453. Through the surface contact between the support plate 453 and the support surface, the pressure on the support surface may be more evenly dispersed, and the possibility of local stress concentration is reduced.

[0057] In an embodiment, a support cavity 454 is provided between the support plate 453, the first air guide plate 451 and the second air guide plate 452, and reinforcement ribs 455 are provided inside the support cavity 454.

[0058] The design of the support cavity 454 may reduce the deadweight of the air duct 400 while ensuring the stability of the air duct 400, facilitate transportation, and save material costs. The reinforcement ribs 455 are provided inside the support cavity 454 to make the support seat 450 stronger and withstand greater loads and pressures to better play a supporting role.

[0059] By appropriately increasing a thickness of the support plate 453, the bearing capacity of the support seat 450 may be improved through the rigidity of the support plate 453. The support plate 453 may be hollow in design to reduce the deadweight. Reinforcement ribs 455 may be provided inside the support plate 453 to improve the rigidity of the support plate 453.

[0060] In an embodiment, as shown in FIG. 2, the second air guide plate 452 is gradually away from the support plate 453 from the middle to its two ends. As such, the bottom area of the support seat 450 is increased without increasing the overall size of the air duct 400 to better play a supporting role.

[0061] In an embodiment, the air duct 400 further comprises two vertical plates 480 respectively provided at both sides of the air duct 400, and the vertical plates 480 connect the second air duct plate 440 and the support plate 453. The vertical plates 480 are perpendicular to the support plate 453 to further enhance the stability of the air duct 400. The first air duct plate 430, the second air duct plate 440, the first air guide plate 451, the second air guide plate 452, the vertical plates 480 and the side plates are integrated to simplify the processing flow.

[0062] In an embodiment, referring to FIG. 3 and FIG. 4, an evaporator top cover 210 is provided at a side of a top of the fan bracket 200 facing away from the air duct 400, the head assembly comprises an evaporator 600, and the evaporator 600 is mounted between the evaporator top cover 210 and the base 100.

[0063] The air passes through a side of the evaporator 600, flows to another side of the evaporator 600, passes through the air duct 400 and is discharged from the exhaust port 110. The evaporator top cover 210 plays a role in shielding the evaporator 600 to prevent the evaporator 600 from being exposed. Since the evaporator top cover 210 is connected to a side of the fan bracket 200 facing away from the air duct 400, the evaporator 600 and the air duct 400 are arranged opposite to each other, and the heat-exchanged air flows directly into the air duct 400.

[0064] In an embodiment, a mount groove 211 is provided at a bottom surface of the evaporator top cover 210, and a top of the evaporator 600 is inserted into the mount groove 211. By matching the mount groove 211 with the evaporator 600, the evaporator 600 may be fixed to prevent the evaporator 600 from moving.

[0065] In an embodiment, the evaporator 600 comprises at least two arc segments. The arc segments are curved shapes, and it may be a plurality of continuous arc segments or a plurality of arc segments arranged at intervals. The arc-shaped design may also increase the heat exchange area of the evaporator 600 without changing the overall size to increase the heat exchange efficiency of the evaporator 600. In addition, the arc-shaped design may increase the strength of the evaporator 600, reduce air resistance, and speed up the flow speed of air on the surface of the evaporator 600.

[0066] In an embodiment, referring to FIG. 5, the base 100 comprises a chassis 120 and a chassis cover 130, the chassis 120 is provided with a dismount-mount hole 121 for the air duct 400, and the chassis cover 130 may be detachably mounted at the dismount-mount hole 121, and the air duct 400 may be detachably mounted at the base 100.

[0067] In an embodiment, the air duct 400 may be dismounted and mounted through the dismount-mount hole 121 without disassembling the entire machine. The chassis cover 130 may be detachably mounted at the dismount-mount hole 121, and the chassis cover 130 may open and close the dismount-mount hole 121. The shape of the chassis cover 130 may match with the dismount-mount hole 121 to close the dismount-mount hole 121. The shape of the chassis cover 130 does not match the dismount-mount hole 121, and the dismount-mount hole 121 may be opened or closed by dismounting or mounting the chassis cover 130. The chassis cover 130 may be directly connected to the base 100, or may be indirectly connected to the base 100, for example, the chassis cover 130 may be mounted at the fan bracket 200.

[0068] In an embodiment, the exhaust port 110 is provided at the chassis cover 130, and the exhaust port 110 corresponds to the air duct 400. Compared with the chassis 120 used for bearing, the thickness of the chassis cover 130 is smaller, and it is easier to process the exhaust port 110. Since the chassis cover 130 may be detachably mounted at the dismount-mount hole 121, the dismount-mount hole 121 is not only used for the mounting or dismounting the air duct 400, but also reserves an exhaust position for exhaust during the use of the heat pump water heater.

[0069] In an embodiment, the air duct 400 may be detachably mounted at the fan bracket 200. Referring to FIG. 2 to FIG. 3, the fan bracket 200 comprises an assembly plate 230, and the assembly plate 230 is fixed to a side of the bracket body 220 facing the air duct 400. An avoidance notch 460 is provided at a top of the air duct 400, and the avoidance notch 460 is used to avoid the fan 300 when the air duct 400 is dismounted or mounted. In case that the air duct 400 is fixed to the bracket body 220, the assembly plate 230 is assembled in the avoidance notch 460.

[0070] The air duct 400 may be detachably mounted at the fan bracket 200. During maintenance, the air duct 400 may be dismounted separately through the dismount-mount hole 121. For example, when it is necessary to conduct separate maintenance on the air duct 400, the air duct 400 may be dismounted from the fan bracket 200 through the dismount-mount hole 121, and the air duct 400 may be removed without dismounting the fan bracket 200.

[0071] In order to better guide air into the air duct 400, the blades of the fan 300 at least partially stretch into the air duct 400. Since the dismount-mount hole 121 is provided at the base 100, the air duct 400 needs to be taken out from top to bottom when the air duct 400 is removed. Therefore, the avoidance notch 460 is provided at the top of the air duct 400. When the air duct 400 is removed, the blades of the fan 300 may pass through the avoidance notch 460 to prevent the fan 300 from obstructing the disassembly work of the air duct 400.

[0072] Referring to FIG. 6, in case that the air duct 400 is fixed to the bracket body 220, the assembly plate 230 is assembled in the avoidance notch 460. While the assembly plate 230 is connected to the air duct 400, the air duct 400 is appropriately extended. The fan bracket 200 may also comprise a top plate 250, and the top plate 250 is located above the assembly plate 230. The top plate 250 may overlap the assembly gap to avoid air leakage. In case that the assembly plate 230 is assembled in the avoidance notch 460, the top plate 250 plays a limiting role, and the air duct 400 is mounted at the correct position. The top plate 250 is in a shape that matches the air duct 400. In case that the air duct 400 is a square air duct, a groove may be provided at a lower end of the top plate 250 to match the shape of the air duct 400. In case that the air duct 400 is a circular air duct, the top plate 250 may be a corresponding arc shape to fit the air duct 400.

[0073] Specifically, as shown in FIG. 2 and FIG. 6, first buckles 231 are provided at both ends of the assembly plate 230, second buckles 490 are provided at both sides of the air duct 400corresponding to the avoidance notch 460 , and the first buckles 231 are matched with the second buckles 490. Through the matching of the first buckles 231 and the second buckles 490, it is convenient to assemble and disassemble the air duct 400 and the fan bracket 200. The air duct 400 may be dismounted by taking the air duct 400 from the dismount-mount hole 121 and disengaging the first buckles 231 from the second buckles 490, without removing the entire fan 300 and the air duct 400 together. The first buckles 231 are clips provided at the assembly plate 230, and a gap is provided between the clips and the assembly plate 230. The second buckle 490 is a protrude. When the air duct 400 is mounted, a side wall of the air duct 400 corresponding to the avoidance notch 460 is inserted into a gap between the clips and the assembly plate 230, and the protrude opens the gap to fix the air duct 400. A surface of the protrude portion is arc-shaped, and the ends of the clips are arc-shaped accordingly, which is convenient for insertion. The first buckles 231 may also be two clips arranged opposite to each other, and a gap is provided between the two clips. The first buckle 231 may also be provided at the top plate 250. The air duct 400 and the fan bracket 200 may also be connected by threaded connection and other manners.

[0074] Referring to FIG. 2, a connect component 510 is provided at a side of the air duct 400 facing the fan bracket 200, the connect component 510 is provided with a mount portion 520, and the mount portion 520 is provided corresponding to the bottom surface of the base 100 to conveniently mount and fix the air duct 400 from the bottom of the base 100. A fixation groove may be provided at the mount portion 520, a fixation protrusion may be provided at a corresponding position of the base 100, and the air duct 400 may be fixed at the base 100 by the cooperation of the fixation protrusion and the fixation groove. A through hole may also be provided at the mount portion 520, and a threaded hole may be provided correspondingly at the base 100. The embodiment of the present application may also comprise a fastening screw, and the fastening screw may pass through the through hole and the threaded hole in sequence for a connection effect.

[0075] Referring to FIG. 4, a post 700 is fixed at the base 100, one of the connect component 510 and the post 700 is provided with an air duct guide rail 530, the other of the connect component 510 and the post 700 is provided with an air duct guide groove, and the air duct guide rail 530 is slidably provided in the air duct guide groove. Through the cooperation of the air duct guide rail 530 and the air duct guide groove, the mount error may be reduced, the mount accuracy may be improved, and the mount position of the air duct 400 may be more easily determined and the air duct 400 may be more easily fixed during the mounting process, which ensures the stability of the mounting and makes it easier to disassemble and assemble.

[0076] Referring to FIG. 3 and FIG. 6, the bracket body 220 comprises a lower bracket 221 and an upper bracket 222, the upper bracket 222 is provided with a first assembly surface 2221 and a second assembly surface 2222, the first assembly surface 2221 is in fit with an upper end surface of the lower bracket 221, and the second assembly surface 2222 is in fit with an upper end surface of the connect component 510.

[0077] In an embodiment, the first assembly surface 2221 is in fit with the upper end surface of the lower bracket 221, and the second assembly surface 2222 is in fit with the upper end surface of the connect component 510 to support the upper bracket 222. The pressure of the upper bracket 222 may be more evenly dispersed, and the possibility of local stress concentration is reduced through the surface contact between the first assembly surface 2221 and the upper end surface of the lower bracket 221 and the surface contact between the second assembly surface 2222 and the upper end surface of the connect component 510. The upper bracket 222 is provided with a first recess at a side away from the assembly plate 230, and the lower bracket 221 is provided with a second recess corresponding to the first recess. The first recess and the second recess are connected to form a fan port 223, and the fan port 223 communicates with the air inlet 411 of the air duct 400. The fan 300 is mounted at the fan bracket 200, and the fan 300 extends into the fan port 223 to facilitate the introduction of air into the air duct 400. the first recess may be flush with the assembly plate 230 to avoid obstructing the flow of air.

[0078] Specifically, one of the upper bracket 222 and the post 700 is provided with a bracket guide rail 224, and the other of the upper bracket 222 and the post 700 is provided with a bracket guide rail 224, and the bracket guide rail 224 is slidably provided in the bracket guide groove 710. Through the cooperation of the bracket guide rail 224 and the bracket guide groove 710, the mount error may be reduced, the mounting accuracy may be improved, and the mount position of the upper bracket 222 may be more easily determined and the upper bracket 222 may be fixed during the mounting process, which ensures the stability of the mounting and makes it easier to disassemble and assemble.

[0079] In order to facilitate mounting, the bracket guide groove 710 and the air duct guide groove may be provided at the post 700, the air duct guide rail 530 may be provided at the connect component 510 of the air duct 400, and the bracket guide rails 224 may be provided on both sides of the upper bracket 222. The bracket guide groove 710 may communicate with the air duct guide groove, which is convenient for processing and convenient for the second assembly surface 2222 to be in fit with the upper end surface of the connect component 510.

[0080] In an embodiment, an avoidance groove 470 is provided at a side of the air duct 400 facing away from the fan bracket 200, and the avoidance groove 470 is used to avoid the internal parts of the heat pump water heater.

[0081] Referring to FIG. 4 and FIG. 7, the head assembly of heat pump water heater comprises an upper cover 830 and an enclosure plate 900 located above the base 100. The enclosure plate 900 encloses between the base 100 and the upper cover 830 to form a mount space 920. A compressor 830, an evaporator 600, an electric control box 810 and many other internal parts are provided inside the mount space 920. An avoidance groove 470 is provided at the air duct 400, which may effectively layout the mount space 920 and coordinate the relationship between the various internal parts. For example, a capacitor is protruded from a surface of the electric control box 810, and the capacitor of the electric control box 810 is provided toward the air duct 400. The avoidance groove 470 may avoid the capacitor and use part of the space of the air duct 400. The electric control box 810 may be mounted without expanding the heat pump water heater.

[0082] The air duct 400 may be provided at the middle of the base 100, and the internal parts such as the compressor 830, the evaporator 600, and the electric control box 810 are provided at the periphery of the air duct 400. In case that the size of the mount space 920 is not sufficient to accommodate other internal parts, the avoidance groove 470 may be provided at a corresponding position of the air duct 400 to coordinate the mounting of other internal parts.

[0083] In addition, the avoidance groove 470 may communicate with the top of the air duct 400 to avoid hindering the air duct 400 from being taken out from the dismount-mount hole 121 of the base 100 from top to bottom.

[0084] The shape of the enclosure plate 900 may be cylindrical. When the surface area is the same, the internal space formed by the cylindrical shape is larger than that of other shapes such as a square shape, which saves material.

[0085] In an embodiment, the enclosure plate 900 may comprise at least two splice plates 910, and the splice plates 910 encloses and forms a mount space 920. The enclosure plate 900 is formed by splicing a plurality of splice plates 910, which is convenient for maintenance. Only the corresponding splice plate 910 needs to be replaced in case that a part of the enclosure plate 900 is damaged. Only the corresponding splice plate 910 needs to be dismounted without dismounting the entire enclosure plate 900 in case that one of the internal parts is damaged. According to the usage requirements, a plurality of the same splice plates 910 may be used to assemble different enclosure plates 900, the shape of the enclosure plate 900 is more flexible and adapts to different user needs and market needs. Using the same splice plates 910 to form different enclosure plates 900 may also save manufacturing costs and relieve inventory pressure.

[0086] In an embodiment, at least one of the base 100 and the upper cover 830 is provided with a first buckle portion, and a second buckle portion is provided at the splice plates 910, and the first buckle portion cooperates with and the second buckle portion. The first buckle portion cooperates with the second buckle portion to conveniently mount and dismount the splice plates 910. As shown in FIG. 8, the splice plates 910 are provided with second buckle portions at both sides opposite to each other, the second buckle portions are engagement plates 911, the first buckle portions are protrusions 831, and the protrusions 831 are provided at inner sides of the engagement plates 911. The side of one engagement plate 911 facing another engagement plate 911 is the inner side of the engagement plate 911. The engagement plates 911 abut against the protrusions 831, the splice plates 910 are connected to at least one of the base 100 and the upper cover 830. The splice plates 910 are arc-shaped, which is convenient for splicing to form a cylindrical enclosure plate 900. Two engagement plates 911 are provided at both sides of the bending direction of the splice plates 910. Through the tension of the arc-shaped splice plates 910, the engagement plates 911 are firmly connected to at least one of the base 100 and the upper cover 830.

[0087] In an embodiment, the fan bracket 200 may be detachably mounted at the base 100, which is convenient for maintaining the fan 300. The fan bracket 200 comprises a bottom plate, the bracket body 220 is provided at the bottom plate, and the bottom plate is connected to a lower end of the base 100. In an embodiment, the fan bracket 200 may be dismounted or mounted from the lower end of the base 100 without disassembling the entire machine. The dismount-mount hole 121 may extend to the lower end of the fan bracket 200, and the fan bracket 200 and the air duct 400 may be dismounted and maintained together by opening the dismount-mount hole 121. If it is determined that the air duct 400 is faulty, the air duct 400 may be dismounted separately. If it is determined that the fan 300 and the air duct 400 are faulty at the same time, since the air duct 400 and the fan bracket 200 may be taken out through the same dismount-mount hole 121, it is not necessary to remove the air duct 400 from the fan bracket 200, and the air duct 400 and the fan bracket 200 may be directly dismounted entirely from the dismount-mount hole 121, which saves maintenance time.

[0088] In an embodiment, as shown in FIG. 9, a fixation step 140 is provided at a side of the base 100 facing the dismount-mount hole 121. An edge of the bottom plate matches with the fixation step 140, and the fan bracket 200 may be dismounted and mounted from the dismount-mount hole 121 at the bottom of the base 100. A position post 141 is provided at the fixation step 140, a position hole is provided at the bottom plate, and the position post 141 penetrates through the position hole. The position post 141 may guide the mounting of the fan bracket 200, the fan bracket 200 is mounted in the correct mount position. The cooperation between the position hole and the position post 141 may prevent the mounted fan bracket 200 from shifting.

[0089] In an embodiment, the chassis 120 is provided with a dismount-mount notch 122, and the dismount-mount notch 122 is located above the chassis cover 130. When the chassis cover 130 is dismounted, the dismounting may be completed by only buckling a finger on the dismount-mount notch 122 and prying the chassis cover 130.

[0090] In an embodiment, the dismount-mount notch 122 may communicate with the dismount-mount hole 121 for easy processing. The dismount-mount notch 122 may not communicate with the dismount-mount hole 121, and only needs to be located above the chassis cover 130.

[0091] In an embodiment, a first match portion is provided at an opening of the dismount-mount hole 121, a second match portion is provided at the chassis cover 130, and the first match portion is at least partially interlocked with the second match portion.

[0092] In an embodiment, the first match portion may be a complex structure, such as a step structure, a buckle structure, etc. The present application does not limit the structure of the first match portion, as long as the first match portion may be at least partially interlocked with the second match portion.

[0093] In an embodiment, as shown in FIG. 7, a finger buckle portion 150 is provided at a lower end of the base 100, and the finger buckle portion 150 is used as a buckle position for fingers to facilitate carrying and prevent sliding. The finger buckle portion 150 is a groove for easy finger entry. The finger buckle portion 150 is provided at a cover gap between the chassis cover 130 and the chassis 120 to facilitate positioning of the chassis cover 130 during mounting.

[0094] The present application also provides a heat pump water heater, comprising the head assembly of heat pump water heater.

[0095] It should be noted that the above embodiments are only used to illustrate the present application, but not to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the solutions of the application do not depart from the scope of the solutions of the present application, and should all be covered in the scope of the claims of the present application.

Claims

1. A head assembly of a heat pump water heater, comprising: a base (100) provided with an exhaust port (110); a fan bracket (200) mounted at the base (100); a fan (300) mounted at the fan bracket (200); and an air duct (400) mounted at the base (100), wherein an air inlet (411) is provided at a side of the air duct (400) facing the fan (300), an air outlet (421) is provided at a side of the air duct (400) facing the base (100), and the air outlet (421) communicates with the exhaust port (110).

2. The head assembly of claim 1, wherein an air inflow passage (410) and an air outflow passage (420) are provided inside the air duct (400), an airflow in the air inflow passage (410) flows in a transverse direction, and an airflow in the air outflow passage (420) flows in a longitudinal direction.

3. The head assembly of claim 2, wherein a transition air duct, which is arc-shaped, is provided inside the air duct (400), the transition air duct is provided between the air inflow passage (410) and the air outflow passage (420) and communicates the air inflow passage (410) with the air outflow passage (420).

4. The head assembly of claim 2 or 3, wherein the air duct (400) comprises: a first air duct plate (430); a second air duct plate (440); and a support seat (450), wherein a first air guide plate (451) is provided at a top of the support seat (450), the first air guide plate (451) is connected to the first air duct plate (430), and the air inflow passage (410) and the air inlet (411) are formed between the first air guide plate (451) and the first air duct plate (430); a second air guide plate (452) is provided at a side of the support seat (450), the second air guide plate (452) is connected to the second air duct plate (440), and the air outflow passage (420) and the air outlet (421) are formed between the second air guide plate (452) and the second air duct plate (440).

5. The head assembly of claim 4, wherein a support plate (453) is provided at a side of the support seat (450) facing the fan bracket (200), and the support plate (453) is in fit with the fan bracket (200).

6. The head assembly of claim 5, wherein a support cavity (454) is formed between the support plate (453), the first air guide plate (451) and the second air guide plate (452), and a reinforcement rib (455) are provided inside the support cavity (454).

7. The head assembly of any of claims 1 to 6, wherein an evaporator top cover (210) is provided at a side of a top of the fan bracket (200) facing away from the air duct (400), the head assembly comprises an evaporator (600), and the evaporator (600) is mounted between the evaporator top cover (210) and the base (100).

8. The head assembly of claim 7, wherein a mount groove (211) is provided at a bottom surface of the evaporator top cover (210), and a top of the evaporator (600) is inserted and mounted into the mount groove (211).

9. The head assembly of claim 7 or 8, wherein the evaporator (600) comprises at least two arc segments.

10. The head assembly of any of claims 1 to 9, wherein the base (100) comprises a chassis (120) and a chassis cover (130), the chassis (120) is provided with a dismount-mount hole (121) for the air duct (400), the chassis cover (130) is detachably mounted at the dismount-mount hole (121), and the air duct (400) is detachably mounted at the base (100).

11. The head assembly of any of claims 1 to 9, wherein the air duct (400) is detachably mounted at the fan bracket (200), and the fan bracket (200) comprises: a bracket body (220); and an assembly plate (230) fixed to a side of the bracket body (220) facing the air duct (400); wherein an avoidance notch (460) is provided at a top of the air duct (400), and the avoidance notch (460) is used to avoid interference with the fan (300) during the mounting and dismounting of the air duct (400); when the air duct (400) is fixed to the bracket body (220), the assembly plate (230) is assembled in the avoidance notch (460).

12. The head assembly of any of claims 1 to 9, wherein an avoidance groove (470) is provided at a side of the air duct (400) facing away from the fan bracket, and the avoidance groove (470) is used to avoid interference with internal parts of the heat pump water heater.

13. A heat pump water heater, comprising a head assembly of any of claims 1 to 12.

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