Head assembly of heat-pump water heater and heat-pump water heater

Abstract

The utility model relates to the technical field of heat pump water heaters, and provides a machine head assembly of a heat pump water heater and the heat pump water heater. The upper cover is located above the base, and a mounting space is formed between the upper cover and the base; the top column connects the upper cover and the base. According to the machine head assembly of the heat-pump water heater and the heat-pump water heater, the installation space is formed between the upper cover and the base, and the installation space is used for installing internal parts of the machine head assembly; the top column plays a role in supporting the upper cover and is used for improving the structural strength of the machine head assembly and preventing the upper cover from collapsing and damaging internal parts of the machine head assembly by pressing.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump water heaters, in particular to a head assembly of a heat pump water heater and a heat pump water heater. Background Art

[0002] Heat pump water heaters are also called air energy water heaters. They absorb low-temperature heat from the air, gasify the medium, compress it through a compressor, increase the pressure and temperature, and then convert it into water through a heat exchanger to heat the water. The compressed high-temperature heat energy is used to heat the water. The head assembly of an existing heat pump water heater includes multiple internal parts such as an evaporator, a compressor, and a fan. The head assembly needs to be strong enough to support the internal parts. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a head assembly of a heat pump water heater and a heat pump water heater, which play an effect of enhancing the structural strength.

[0004] The utility model provides a head assembly of a heat pump water heater, comprising:

[0005] Base;

[0006] An upper cover is located above the base, and an installation space is formed between the upper cover and the base;

[0007] A top column connects the upper cover and the base.

[0008] According to one embodiment of the utility model, the number of the top columns is not less than three, and at least three of the top columns are arranged on the edge of the base. The head assembly also includes a enclosure, which is arranged on the outside of the base to form the installation space between the base, the enclosure and the upper cover.

[0009] According to an embodiment of the utility model, the enclosure is assembled from at least two splicing plates, and the splicing plate corresponds to at least one of the top columns.

[0010] According to an embodiment of the utility model, the head assembly includes a fixing column and an internal part, the fixing column is arranged on the base, and the fixing column is suitable for fixing the internal part.

[0011] According to one embodiment of the utility model, it also includes a partition, at least one end of which is connected to the top column or the fixed column, and the partition is used to divide the installation space into at least two compartments to separate the internal parts of the head assembly.

[0012] According to one embodiment of the utility model, the internal parts include a fan bracket, an air duct and a compressor, the fixed column is arranged on the base; one end of the partition is connected to the top column, and the other end is connected to the fixed column, and the chamber includes a first chamber and a second chamber; at least a portion of the fan bracket is fixed between the two fixed columns, the fan bracket and the air duct are arranged in the first chamber; the air duct is located between the partition and the fan bracket, and the compressor is arranged in the second chamber.

[0013] According to an embodiment of the utility model, the fixing column is provided with a slide groove, and the air duct and / or the fan bracket is provided with a slide rail corresponding to the slide groove.

[0014] According to one embodiment of the utility model, the internal parts also include an evaporator, a clamping gap is formed between the top column and the fixed column, an end of the evaporator is arranged in the clamping gap, and the evaporator is connected to the fixed column or the top column.

[0015] According to an embodiment of the present invention, the fixing column has a supporting wall, and the supporting wall is used to abut against the side wall of the internal part;

[0016] and / or,

[0017] A reinforcing plate is provided on the back of the fixing column;

[0018] and / or,

[0019] The fixing column is provided with a wire threading hole, and the wire threading hole is suitable for the wire to pass through.

[0020] The utility model also provides a heat pump water heater, comprising a head assembly of the heat pump water heater.

[0021] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0022] An installation space is formed between the upper cover and the base, and the installation space is used to install the internal parts of the head assembly; the top column plays a role in supporting the upper cover to improve the structural strength of the head assembly and prevent the upper cover from collapsing and damaging the internal parts of the head assembly.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the internal structure of the head assembly of the heat pump water heater provided by the embodiment of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of a head assembly of a heat pump water heater provided by an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the installation of the top column, the fixing column, the partition and the base of the head assembly of the heat pump water heater provided by the embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the installation of the air duct, fan bracket and fixing column of the head assembly of the heat pump water heater provided by the embodiment of the utility model;

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the air duct of the head assembly of the heat pump water heater provided by the embodiment of the utility model;

[0030] Figure 6 It is a three-dimensional structural schematic diagram of a fixing column of a head assembly of a heat pump water heater provided in an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100, base; 110, installation space; 111, first room; 112, second room;

[0033] 200, upper cover;

[0034] 300, top column;

[0035] 400, hoarding; 410, splicing board;

[0036] 500, fixed column; 510, slide groove; 520, clamping gap; 530, supporting wall; 540, avoidance gap; 550, reinforcement plate; 560, threading hole; 570, stop protrusion;

[0037] 600, partition; 610, insert; 620, avoidance groove;

[0038] 710, fan bracket; 720, air duct; 730, slide rail;

[0039] 810, compressor; 820, electric control box;

[0040] 900. Evaporator. DETAILED DESCRIPTION

[0041] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0042] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] Heat pump water heaters, also known as "air source heat pump water heaters" and "air energy water heaters", absorb low-temperature heat from the air, gasify the refrigerant in the evaporator, and turn it into low-temperature steam. The low-temperature steam is then compressed by a compressor and converted into high-temperature, high-pressure gas, and then the compressed high-temperature heat is converted into water heating by a heat exchanger. Therefore, compared with traditional electric water heaters and gas water heaters, heat pump water heaters have many advantages such as high efficiency, energy saving, environmental protection, and safety.

[0047] The head assembly of an existing heat pump water heater includes multiple internal parts such as an evaporator, a compressor, and a fan. Therefore, the outer shell of the head assembly needs to have sufficient bearing capacity to support the internal parts. However, the outer shell of the head assembly of a heat pump water heater in the prior art is generally composed of an upper cover, a base, and a panel, and the panel is connected between the upper cover and the base. Since the internal parts of the head assembly are arranged between the upper cover and the base, and the upper cover and the base are only supported by the panel, if the panel is deformed, the internal parts of the head assembly will be damaged. The inner tank of some heat pump water heaters is arranged above the upper cover. The upper cover and the panel need to bear the weight of the inner tank. After a long period of stress, the panel is easily deformed, causing the upper cover to collapse and the internal parts of the head assembly to be damaged.

[0048] See also Figure 1 to Figure 2 The first embodiment of the utility model provides a head assembly of a heat pump water heater, including a base 100, an upper cover 200 and a top column 300; the upper cover 200 is located above the base 100, and an installation space 110 is formed between the upper cover 200 and the base 100; the top column 300 connects the upper cover 200 and the base 100.

[0049] An installation space 110 is formed between the upper cover 200 and the base 100, and the installation space 110 is used to install the internal parts of the head assembly; the top column 300 supports the upper cover 200 to improve the structural strength of the head assembly and prevent the upper cover 200 from collapsing and damaging the internal parts of the head assembly.

[0050] It can be understood that at least two top columns 300 can be provided, and multiple top columns 300 are distributed on the base 100 to support various parts of the upper cover 200 to prevent local collapse due to local weak strength of the head assembly; the top column 300 can also be provided with one, three or four, and the embodiment of the utility model does not particularly limit the number of the top columns 300.

[0051] It can be understood that the top column 300 can be set at the edge of the base 100 to improve the stability of the head assembly while avoiding occupying the installation space 110 of the internal parts and affecting the installation of the internal parts; or, in some embodiments, support can be provided for a part with relatively weak strength, or support can be provided for a part with a larger load to improve the overall strength. For example, the inner tank of the heat pump water heater refers to the part that stores hot water inside the water heater. The inner tank of the heat pump water heater is arranged on the upper cover 200, and the top column 300 is arranged in the middle of the base 100. The top column 300 is connected to the upper cover 200, which can improve the bearing capacity of the upper cover 200 to better support the inner tank of the water heater.

[0052] Generally, the lengths of the plurality of top columns 300 connecting the upper cover 200 and the base 100 are consistent, so that the upper cover 200 and the base 100 are arranged in parallel, which is convenient for fixing other parts on the base 100 and the upper cover 200; of course, in other embodiments, the plurality of top columns 300 may be of different lengths to adapt to different structural layouts.

[0053] It is understandable that the cross-section of the top column 300 may be sheet-shaped to avoid affecting the installation of internal parts in the installation space 110, or, in some embodiments, the cross-section of the top column 300 may be circular, square, etc.

[0054] In one embodiment, the number of top columns 300 is not less than three, and at least three top columns 300 are arranged on the edge of the base 100. The head assembly also includes a surround 400, which is arranged on the outside of the base 100 to form an installation space 110 between the base 100, the surround 400 and the upper cover 200.

[0055] At least three top columns 300 are arranged on the base 100. The three top columns 300 can form a stable structure, maintain the balance of the upper cover 200, strengthen the strength of the head assembly, and prevent the upper cover 200 from collapsing; the top columns 300 are arranged on the edge of the base 100 to avoid occupying the installation space 110 of internal parts and affecting the installation of internal parts; the enclosure 400 is arranged on the outside of the base 100 to form an installation space 110 between the base 100, the enclosure 400 and the upper cover 200. The enclosure 400 plays a role in protecting the internal parts and can isolate impurities such as dust and water vapor to prevent impurities such as dust and water vapor from affecting the normal operation of internal parts.

[0056] Generally, the enclosure 400 is cylindrical, and the top column 300 can be an arc-shaped sheet to better fit the enclosure 400 .

[0057] See also Figure 2 In one embodiment, the enclosure 400 is assembled from at least two splicing plates 410 , and the splicing plate 410 corresponds to at least one top column 300 .

[0058] The enclosure 400 is assembled from at least two splicing plates 410. If an internal part of the head assembly fails, only the splicing plate 410 needs to be removed to check the internal condition of the head assembly without removing the entire enclosure 400, thus saving maintenance time. During maintenance, at least one splicing plate 410 can be removed to check the internal condition of the head assembly. If one splicing plate 410 is removed, an inspection port is formed on the enclosure 400 for easy maintenance. After the maintenance is completed, the splicing plate 410 can be installed. During the entire maintenance process, there is no need to remove other parts such as the upper cover 200 or the base 100, nor is there any need to remove the entire enclosure 400, so the operation is simple and convenient. In addition, during maintenance, the splicing plate 410 at the corresponding position can be removed for maintenance according to the specific location of the internal part of the failure without removing the entire enclosure 400. If a part of the enclosure 400 is damaged, only the corresponding splicing plate 410 needs to be replaced without replacing the entire enclosure 400.

[0059] The splicing plate 410 corresponds to at least one top column 300, that is, at least one top column 300 is arranged on the inner side of the splicing plate 410 to support the corresponding splicing plate 410 and prevent the splicing plate 410 from deforming; the splicing plate 410 can be arranged on the outside of one or more top columns 300, and the splicing plate 410 can also be arranged between two top columns 300, and the embodiment of the utility model is not limited to this.

[0060] See also Figure 1 The head assembly of the heat pump water heater of the embodiment of the utility model further includes a fixing column 500 and internal parts. The fixing column 500 is arranged on the base 100, and the fixing column 500 is suitable for fixing the internal parts.

[0061] It can be understood that the fixing column 500 is set on the base 100 to fix the internal parts of the head assembly to provide better support and prevent the internal parts from loosening or tilting; the fixing column 500 can be connected to the upper cover 200 to support the upper cover 200. Of course, in other embodiments, the fixing column 500 may not be connected to the upper cover 200, and only needs to be fixed on the base 100.

[0062] See also Figure 1 and Figure 3The head assembly of the heat pump water heater of the embodiment of the utility model also includes a partition 600, at least one end of which is connected to the top column 300 or the fixed column 500, and the partition 600 is used to divide the installation space 110 into at least two compartments to separate the internal parts of the head assembly.

[0063] The partition 600 can be provided to divide the installation space 110 into at least two compartments so as to separate the internal parts of the machine head assembly, which is beneficial to the internal layout of the installation space 110 and prevents the various parts from interfering with each other. The end of the partition 600 can be connected to the top column 300 or the fixed column 500. The fixed column 500 or the top column 300 can play the role of fixing the partition 600; the partition 600 can be fixed at one end or at both ends; the top and bottom of the partition 600 can be provided with insert strips 610 respectively, and the upper cover 200 and the base 100 are provided with corresponding slots. Through the cooperation of the insert strips 610 and the slots, the partition 600 is fixed to the base 100. The partition 600 can be curved to facilitate the installation of internal parts in the installation space 110, which is conducive to the coordination between various parts; through the curved shape of the partition 600 itself, the installation space 110 can be divided into two, three or four compartments to separate the various internal parts; of course, the partition 600 can also be a straight plate to divide the installation space 110 into two compartments; generally, one partition 600 can be set, of course, it is not ruled out that multiple partitions 600 are set to better divide the installation space 110.

[0064] The embodiment of the utility model does not impose any particular limitation on the number and shape of the partitions 600 .

[0065] In one embodiment, the internal parts include a fan bracket 710, an air duct 720 and a compressor 810, and the fixing column 500 is arranged on the base 100; one end of the partition 600 is connected to the top column 300, and the other end is connected to the fixing column 500, and the chamber includes a first chamber 111 and a second chamber 112; at least a portion of the fan bracket 710 is fixed between the two fixing columns 500, and the fan bracket 710 and the air duct 720 are arranged in the first chamber 111; the air duct 720 is located between the partition 600 and the fan bracket 710, and the compressor 810 is arranged in the second chamber 112.

[0066] The fan bracket 710 is installed with a fan, and the fan includes at least fan blades; since the fan will vibrate when it is working, at least part of the fan bracket 710 is fixed between two fixing columns 500, and support can be provided from both sides of the fan bracket 710 to fix the fan bracket 710 and prevent the fan bracket 710 from collapsing.

[0067] There is no need for direct connection between the air duct 720 and the compressor 810, and the air supply work of the air duct 720 is likely to affect the normal operation of the compressor 810. If the air duct 720 is damaged, it will have a direct impact on the operation of the compressor 810. The fan bracket 710 and the air duct 720 are arranged in the first chamber 111, and the compressor 810 is arranged in the second chamber 112, so that the compressor 810 can be isolated from the air duct 720 and the fan bracket 710 to avoid mutual interference. The air duct 720 is located between the partition 600 and the fan bracket 710, which is conducive to the separate disassembly and assembly of the air duct 720 to prevent the disassembly and assembly of the air duct 720 from affecting the operation of other parts.

[0068] See also Figure 1 In one embodiment, the internal parts further include an electric control box 820 , and an avoidance groove may be provided on the partition 600 to avoid the electric control box 820 and other parts.

[0069] See also Figure 4 and Figure 5 In one embodiment, the fixing column 500 is provided with a slide groove 510 , and at least one of the air duct 720 and the fan bracket 710 is provided with a slide rail 730 corresponding to the slide groove 510 .

[0070] The cooperation between the slide rail 730 and the slide groove 510 facilitates the air duct 720 or the fan bracket 710 to be fixed between the two fixed columns 500; during disassembly and assembly, the air duct 720 or the fan bracket 710 can be pulled along the slide groove 510, which facilitates disassembly and installation.

[0071] See also Figure 1 and Figure 3 In one embodiment, the internal parts further include an evaporator 900 , a clamping gap 520 is formed between the top column 300 and the fixed column 500 , an end of the evaporator 900 is disposed in the clamping gap 520 , and the evaporator 900 is connected to the fixed column 500 or the top column 300 .

[0072] The clamping gap 520 formed between the top column 300 and the fixed column 500 plays a role in fixing the evaporator 900; the evaporator 900 is connected to the fixed column 500 or the top column 300 to fix the evaporator 900. Side plates can be arranged on both sides of the evaporator 900, and at least one side of the side plate is provided with a connecting plate, which is used to connect the fixed column 500 or the top column 300; the side plate can be provided with connecting plates on both sides to connect the fixed column 500 and the top column 300; the side plate can be connected to the fixed column 500 or the top column 300 by threaded connection; and the side plate can be provided with perforations for the heat exchange tubes of the evaporator 900 to pass through.

[0073] See also Figure 6In one embodiment, the fixing column 500 has a supporting wall 530, and the supporting wall 530 is used to abut against the side wall of the internal part to provide further supporting effect.

[0074] For example, Figure 1 As shown, at least part of the air duct 720 and the fan bracket 710 are fixed between the same two fixing columns 500. While fixing the air duct 720 and the fan bracket 710, the relative positions of the air duct 720 and the fan bracket 710 can be kept unchanged, which is beneficial for the fan on the fan bracket 710 to deliver wind into the air duct 720; the air duct 720 and the fan bracket 710 can be directly connected, and a first buckle can be provided on both sides of the air duct 720, and a second buckle can be provided on both sides of the air duct 720 corresponding to the avoidance gap 540, and the first buckle and the second buckle cooperate. The cooperation of the first buckle and the second buckle facilitates the assembly and disassembly of the air duct 720 and the fan bracket 710. An avoidance gap 540 can be provided on the fixing column 500 to avoid the first buckle or the second buckle; or, in some embodiments, the air duct 720 and the fan bracket 710 can also be indirectly connected through the fixing column 500; as shown in FIG. Figure 1 and Figure 6 As shown, the support wall 530 includes a first wall and a second wall, the first wall supports the side wall of the fan bracket 710 , and the second wall supports the side wall of the air duct 720 , thereby increasing the stability of the air duct 720 and the fan bracket 710 .

[0075] See also Figure 6 In one embodiment, a reinforcing plate 550 is provided on the back of the fixing column 500 to enhance the strength of the fixing column 500; a plurality of reinforcing plates 550 may be provided to further enhance the strength of the fixing column 500; the reinforcing plate 550 may be provided horizontally, and the reinforcing plate 550 connects the first wall and the second wall to support the first wall and the second wall and enhance the supporting force of the first wall and the second wall; of course, the reinforcing plate 550 may also be provided vertically.

[0076] See also Figure 6 In one embodiment, a wire threading hole 560 is provided on the fixing column 500, and the wire threading hole 560 is suitable for passing the wire to avoid line disorder.

[0077] See also Figure 6 For example, a threading hole 560 may be provided on the fixing column 500 connected to one end of the fan bracket 710, and the wires of the fan may pass through the threading hole 560 to prevent the wires from hitting the evaporator 900 and causing a safety accident; a stopper protrusion 570 may be provided on the side of the threading hole 560 close to the evaporator 900 to further guide the routing of the wires. The stopper protrusion 570 may be an arc sheet or a bump.

[0078] The second aspect of the present invention also provides a heat pump water heater, including a head assembly of the heat pump water heater.

[0079] It can be understood that if the head assembly of the heat pump water heater has the beneficial effects of the above embodiments, then the heat pump water heater correspondingly has the beneficial effects of the above embodiments. Its specific implementation method can refer to the above embodiments, and this application will not go into details.

[0080] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A head assembly of a heat pump water heater, characterized in that: include: Base (100); An upper cover (200) is located above the base (100), and an installation space (110) is formed between the upper cover (200) and the base (100); A top column (300) connects the upper cover (200) and the base (100).

2. The head assembly of the heat pump water heater according to claim 1, characterized in that: The number of the top columns (300) is not less than three, and at least three of the top columns (300) are arranged on the edge of the base (100). The head assembly also includes a surrounding plate (400), and the surrounding plate (400) is surrounded on the outside of the base (100) to form the installation space (110) between the base (100), the surrounding plate (400) and the upper cover (200).

3. The head assembly of the heat pump water heater according to claim 2, characterized in that: The enclosure (400) is assembled from at least two splicing plates (410), and the splicing plates (410) correspond to at least one of the top columns (300).

4. The head assembly of the heat pump water heater according to any one of claims 1 to 3, characterized in that: The head assembly comprises a fixing column (500) and internal parts. The fixing column (500) is arranged on the base (100), and the fixing column (500) is suitable for fixing the internal parts.

5. The head assembly of the heat pump water heater according to claim 4, characterized in that: It also includes a partition (600), at least one end of which is connected to the top column (300) or the fixed column (500), and the partition (600) is used to divide the installation space (110) into at least two compartments to separate the internal parts of the head assembly.

6. The head assembly of the heat pump water heater according to claim 5, characterized in that: The internal parts include a fan bracket (710), an air duct (720) and a compressor (810); the fixing column (500) is arranged on the base (100); one end of the partition (600) is connected to the top column (300), and the other end is connected to the fixing column (500); the chamber includes a first chamber (111) and a second chamber (112); at least a portion of the fan bracket (710) is fixed between the two fixing columns (500); the fan bracket (710) and the air duct (720) are arranged in the first chamber (111); the air duct (720) is located between the partition (600) and the fan bracket (710), and the compressor (810) is arranged in the second chamber (112).

7. The head assembly of the heat pump water heater according to claim 6, characterized in that: The fixing column (500) is provided with a slide groove (510), and the air duct (720) and / or the fan bracket (710) are provided with a slide rail (730) corresponding to the slide groove (510).

8. The head assembly of the heat pump water heater according to claim 4, characterized in that: The internal parts also include an evaporator (900), a clamping gap (520) is formed between the top column (300) and the fixed column (500), an end of the evaporator (900) is arranged in the clamping gap (520), and the evaporator (900) is connected to the fixed column (500) or the top column (300).

9. The head assembly of the heat pump water heater according to claim 4, characterized in that: The fixing column (500) has a supporting wall (530), and the supporting wall (530) is used to abut against the side wall of the internal part; and / or, A reinforcing plate (550) is provided on the back side of the fixing column (500); and / or, The fixing column (500) is provided with a wire threading hole (560), and the wire threading hole (560) is suitable for passing an electric wire.

10. A heat pump water heater, characterized in that: The invention comprises a head assembly of a heat pump water heater according to any one of claims 1 to 9.

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