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 machine head assembly comprises a shell and a pressure release valve, and a mounting space is formed in the shell; the pressure release valve is used for measuring the pressure of the inner container of the water heater, and the pressure release valve is mounted in the mounting space; an operation opening is formed in the shell and is communicated with the mounting space; the operation opening is suitable for controlling the pressure release valve. According to the machine head assembly of the heat-pump water heater and the heat-pump water heater, the pressure release valve is arranged, the pressure release valve detects the pressure of the inner container of the water heater, and when the pressure exceeds a set range, the pressure release valve is automatically opened to release the pressure so as to ensure that the pressure of the inner container of the water heater is maintained within a safe range. The pressure release valve is installed in the installation space, the operation opening is communicated with the installation space, the pressure release valve can be disassembled and installed through the operation opening, and regular maintenance of the pressure release valve is facilitated.

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. Heat pump water heaters 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 for heating through a heat exchanger. The compressed high-temperature heat energy is used to heat the water. In the prior art, a TP valve (Temperature Pressure Relief Valve, also known as a temperature and pressure relief valve) is set on the inside of the water heater tank to prevent the internal pressure of the water heater from being too high and causing explosions or other safety accidents. When the internal pressure of the water heater exceeds the set value of the pressure relief valve, the TP valve will automatically open and release part of the pressure to ensure that the internal pressure of the water heater is maintained within a safe range. The TP valve of the existing heat pump water heater is installed on the inside of the inner tank, which is inconvenient to install and inconvenient to maintain. 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 is convenient for maintenance.

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

[0005] A housing, the interior of which forms an installation space;

[0006] A pressure relief valve, used to measure the pressure of the inner tank of the water heater, the pressure relief valve being installed in the installation space;

[0007] An operating port is formed on the shell, and the operating port is connected to the installation space; the operating port is suitable for operating the pressure relief valve.

[0008] According to one embodiment of the utility model, the head assembly also includes at least two columns, the outer shell includes an upper cover, a base and a surrounding plate, the installation space is formed between the upper cover and the base, the columns are connected between the upper cover and the base; the operating port is formed between the two columns; the surrounding plate is arranged around the edges of the upper cover and the base, and the two ends of the surrounding plate are connected to the opening of the operating port.

[0009] According to an embodiment of the utility model, a reinforcement is provided above and / or below the operation port, the reinforcement connects the two columns adjacent to the operation port, and the reinforcement is connected to the upper cover or the base.

[0010] According to an embodiment of the present invention, the reinforcement member has an inclined surface, and the inclined surface is inclined from the outer side of the operation opening to the inner side of the operation opening.

[0011] According to an embodiment of the present invention, a temperature limiter is further included, and the temperature limiter is located in the installation space.

[0012] According to an embodiment of the utility model, it further comprises a protection cover, wherein the protection cover is connected to the shell, and a placement cavity is formed between the protection cover and the shell, and the temperature limiter is arranged in the placement cavity.

[0013] According to one embodiment of the utility model, a partition is also included, at least one end of which is connected to the opening of the operating port, and the partition is suitable for isolating internal parts of the head assembly.

[0014] According to an embodiment of the utility model, an avoidance groove is provided on the partition, and the avoidance groove is suitable for avoiding the operating handle of the pressure relief valve.

[0015] According to an embodiment of the utility model, it also includes a water inlet pipe, the water inlet pipe is connected to the water heater inner tank, and the pressure relief valve is arranged on the water inlet pipe.

[0016] The utility model also provides a heat pump water heater, comprising a head assembly of the heat pump water heater.

[0017] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0018] A pressure relief valve is provided to detect the pressure of the inner tank of the water heater. When the pressure exceeds the set range, the pressure relief valve automatically opens to release the pressure to ensure that the pressure of the inner tank of the water heater is maintained within a safe range. The pressure relief valve is installed in the installation space, and the operating port is connected to the installation space. The pressure relief valve can be disassembled and installed through the operating port, which is conducive to regular maintenance of the pressure relief valve.

[0019] 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

[0020] 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.

[0021] Figure 1It 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;

[0022] Figure 2 It is a schematic diagram of the installation of the partition, column and base of the head assembly of the heat pump water heater provided by the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the installation of a temperature limiter and a protective cover of a heat pump water heater provided in an embodiment of the utility model;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the base of the head assembly of the heat pump water heater provided by the embodiment of the utility model.

[0025] Reference numerals:

[0026] 100, housing; 110, operation port; 120, upper cover; 130, base; 131, slot; 132, water tank; 133, drainage hole; 140, enclosure; 150, installation space;

[0027] 200, pressure relief valve;

[0028] 300, pillar;

[0029] 400, reinforcement member; 410, inclined surface;

[0030] 500, water inlet pipe;

[0031] 600, temperature limiter;

[0032] 700, protective cover;

[0033] 800, partition; 810, insert; 820, avoidance groove; 830, pipe hole. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] In the prior art, a TP valve is installed inside the inner tank of the water heater to prevent the water heater from exploding or other safety accidents due to excessive internal pressure. When the internal pressure of the water heater exceeds the set value of the pressure relief valve, the TP valve will automatically open and release part of the pressure to ensure that the internal pressure of the water heater is maintained within a safe range. The TP valve of the existing heat pump water heater is installed inside the inner tank, which is inconvenient to install and maintain.

[0041] See also Figures 1 to 2 In a first aspect, an embodiment of the utility model provides a head assembly of a heat pump water heater, including a shell 100 and a pressure relief valve 200 , wherein an installation space 150 is formed inside the shell 100 ; the pressure relief valve 200 is installed in the installation space 150 ; an operation port 110 is formed on the shell 100 , and the operation port 110 is connected to the installation space 150 .

[0042] The embodiment of the utility model is provided with a pressure relief valve 200, which detects the pressure of the inner tank of the water heater. When the pressure exceeds the set range, the pressure relief valve 200 automatically opens to release the pressure to ensure that the pressure of the inner tank of the water heater is maintained within a safe range. The pressure relief valve 200 is installed in the installation space 150, and the operation port 110 is connected to the installation space 150. The pressure relief valve 200 can be disassembled and installed through the operation port 110, which is conducive to regular maintenance of the pressure relief valve 200.

[0043] It can be understood that the pressure in the water heater tank can be hydraulic. A drain outlet is set on the pressure relief valve 200, and a drain pipe is connected to the drain outlet to discharge the water in the water heater tank to reduce the pressure of the water heater; the pressure relief valve 200 detects the hydraulic pressure of the water heater tank. If the hydraulic pressure exceeds the set range, the drain outlet is opened to drain the water, and the water in the water heater tank is released to ensure that the pressure in the water heater tank is maintained within a safe range.

[0044] It can be understood that the pressure relief valve 200 can be directly disassembled and installed through the operation port 110, without disassembling the entire machine, which is convenient for regular maintenance of the pressure relief valve 200. The pressure relief valve 200 is arranged in the installation space 150, and the housing 100 protects the pressure relief valve 200 from external impact and water vapor erosion. At the same time, the housing 100 shields the pressure relief valve 200 to prevent the pressure relief valve 200 from being exposed to the outside. When the pressure relief valve 200 needs to be repaired, it can be operated directly through the operation port 110.

[0045] In one embodiment, the head assembly also includes at least two columns 300, the outer shell 100 includes an upper cover 120, a base 130 and a panel 140, an installation space 150 is formed between the upper cover 120 and the base 130, the column 300 is connected between the upper cover 120 and the base 130; an operating port 110 is formed between the two columns 300; the panel 140 is arranged around the edges of the upper cover 120 and the base 130, and the two ends of the panel 140 are connected to the opening of the operating port 110.

[0046] It can be understood that the column 300 is connected between the upper cover 120 and the base 130 to support the enclosure 140. An operating port 110 is formed between the two columns 300. The enclosure 140 is arranged around the edges of the upper cover 120 and the base 130, and both ends of the enclosure 140 are connected to the opening of the operating port 110. Due to the supporting effect of the column 300, the operating port 110 can be effectively prevented from being deformed.

[0047] It can be understood that the column 300 is connected between the upper cover 120 and the base 130, and an operating port 110 is formed between the two columns 300, that is, the upper cover 120 is above the operating port 110, and the lower part thereof is the base 130, so that the size of the operating port 110 in the vertical direction is maximized, which facilitates the pressure relief valve 200 to pass through the operating port 110 and facilitates disassembly and assembly.

[0048] It can be understood that the column 300 plays a role in supporting the upper cover 120, so as to improve the structural strength of the head assembly and prevent the upper cover 120 column 300 from collapsing and damaging the internal parts of the head assembly. At least two columns 300 can be provided, and multiple columns 300 are distributed on the base 130 to support various parts of the upper cover 120 to prevent local collapse due to local weak strength of the head assembly; the column 300 can also be provided with one, three or four, and the embodiment of the utility model does not specifically limit the number of columns 300.

[0049] See also Figure 1In one embodiment, a reinforcement member 400 may be provided above the operation port 110, the reinforcement member 400 connects two columns 300 adjacent to the operation port 110, and the reinforcement member 400 is connected to the upper cover 120. The reinforcement member 400 is used to increase the strength of the opening end of the operation port 110 to prevent the operation port 110 from being deformed by external forces; the reinforcement member 400 may also be provided below the operation port 110, and the reinforcement member 400 is connected to the base 130; or, in some embodiments, the reinforcement member 400 may be provided above and below the operation port 110, and the reinforcement member 400 located above the operation port 110 is connected to the upper cover 120, and the reinforcement member 400 located below the operation port 110 is connected to the base 130, so as to increase the strength of the opening end of the operation port 110. The reinforcement member 400 may be in the form of a sheet, a block, etc. In order to increase the rigidity and reduce the dead weight at the same time, the reinforcement member 400 may be a hollow shell.

[0050] See also Figure 1 In one embodiment, the reinforcement member 400 has an inclined surface 410, which is inclined from the outside of the operation port 110 to the inside of the operation port 110, so that the edge of the operation port 110 is smoother to prevent the operator's hand from being scratched. The inclined surface 410 can be a flat surface for easy processing, or a curved surface.

[0051] In one embodiment, the operating port 110 may also be directly processed on the outer shell 100. For example, the operating port 110 may be opened on the enclosure 140, the top cover or the base 130, and the pressure relief valve 200 may be directly disassembled and assembled through the operating port 110. A cover may also be provided on the operating port 110 to prevent dust and moisture.

[0052] See also Figure 1 The head assembly of the heat pump water heater of the embodiment of the utility model further includes a water inlet pipe 500, which is connected to the inner tank of the water heater, and a pressure relief valve 200 is arranged on the water inlet pipe 500. When the pressure relief valve 200 detects that the pressure of the water heater is too high, the water inlet pipe 500 can be closed while the drain port is opened to prevent the water in the inner tank of the water heater from flowing back.

[0053] See also Figure 1 and Figure 3 The head assembly of the heat pump water heater of the embodiment of the utility model further includes a temperature limiter 600, which is located in the installation space 150 and is suitable for measuring the temperature of the inner tank of the water heater.

[0054] The temperature limiter 600 measures the temperature of the inner tank of the water heater. If the temperature of the inner tank of the water heater exceeds the set temperature, the compressor and the heater of the water heater are stopped to prevent the temperature of the water heater from exceeding the safe range. The temperature limiter 600 is installed in the installation space 150 for easy installation; the probe of the temperature limiter 600 extends into the temperature measuring tube of the water heater to detect the temperature of the water heater.

[0055] See also Figure 1 and Figure 3 The head assembly of the heat pump water heater of the embodiment of the utility model further includes a protective cover 700, which is connected to the housing 100, and a placement cavity is formed between the protective cover 700 and the housing 100, and the temperature limiter 600 is arranged in the placement cavity.

[0056] The protective cover 700 can fix the temperature limiter 600, and the protective cover 700 shields the temperature limiter 600, isolates the temperature limiter 600 from the outside world, and prevents the outside temperature and humidity from affecting the operation of the temperature limiter 600. The shape of the placement cavity can match the temperature limiter 600, or it can not match, as long as the placement cavity can accommodate the temperature limiter 600.

[0057] See also Figure 2 The head assembly of the heat pump water heater of the embodiment of the utility model also includes a partition 800. At least one end of the partition 800 is connected to the opening of the operating port 110. The partition 800 is suitable for isolating the internal parts of the head assembly, which is beneficial to the internal layout of the installation space 150 and prevents the various parts from interfering with each other. At the same time, the partition 800 plays a role in shielding the internal parts of the head assembly.

[0058] It is understandable that the partition 800 can be fixed at one end or at both ends; the top and bottom of the partition 800 can be provided with insert strips 810, respectively, and the upper cover 120 and the base 130 are provided with slots 131, and the partition 800 is fixed on the base 130 through the cooperation of the insert strips 810 and the slots 131. The partition 800 can be curved to facilitate the installation of internal parts in the installation space 150, which is conducive to the coordination between various parts; of course, the partition 800 can also be a straight plate; generally, one partition 800 can be provided, and of course, it is not ruled out that multiple partitions 800 are provided to better divide the installation space 150. The embodiment of the utility model does not specifically limit the number and shape of the partition 800.

[0059] See also Figure 1 and Figure 2 In one embodiment, an avoidance groove 820 is provided on the partition 800 , and the avoidance groove 820 is suitable for avoiding the operating handle of the pressure relief valve 200 .

[0060] An operating handle is provided on the pressure relief valve 200. When installing and disassembling the pressure relief valve 200, the pressure relief valve 200 needs to be rotated, and the operating handle of the pressure relief valve 200 rotates accordingly. Due to space limitations, the setting of the partition 800 may hinder the installation of the pressure relief valve 200. Therefore, an avoidance groove 820 is provided on the partition 800 to avoid the operating handle of the pressure relief valve 200. The avoidance groove 820 can effectively coordinate the spatial distribution, making the overall structure more compact.

[0061] See also Figure 2 and Figure 4 In one embodiment, a water receiving trough 132 is provided on the base 130, and a drainage hole 133 is provided at the bottom of the water receiving trough 132. A pipe hole 830 can be provided on the partition 800 for the drainage pipe to pass through. The water discharged by pressure relief is discharged into the water receiving trough 132 through the pipe hole 830 and the drainage pipe, and then flows out from the drainage hole 133. The water discharged during pressure relief is collected uniformly by the water receiving trough 132 and then discharged together.

[0062] The second aspect of the present invention also provides a heat pump water heater, including a head assembly of the heat pump water heater.

[0063] 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.

[0064] 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: A housing (100) having an installation space (150) formed therein; A pressure relief valve (200), the pressure relief valve (200) being installed in the installation space (150); An operating port (110) is formed on the housing (100), and the operating port (110) is connected to the installation space (150).

2. The head assembly of the heat pump water heater according to claim 1, characterized in that: The head assembly further comprises at least two columns (300); the housing (100) comprises an upper cover (120), a base (130) and a panel (140); the installation space (150) is formed between the upper cover (120) and the base (130); the column (300) is connected between the upper cover (120) and the base (130); the operating port (110) is formed between the two columns (300); the panel (140) is arranged around the edges of the upper cover (120) and the base (130), and the two ends of the panel (140) are connected to the opening of the operating port (110).

3. The head assembly of the heat pump water heater according to claim 2, characterized in that: A reinforcement member (400) is provided above and / or below the operation port (110), the reinforcement member (400) is connected to two of the upright posts (300) adjacent to the operation port (110), and the reinforcement member (400) is connected to the upper cover (120) or the base (130).

4. The head assembly of the heat pump water heater according to claim 3, characterized in that: The reinforcement member (400) has an inclined surface (410), and the inclined surface (410) is inclined from the outside of the operation opening (110) to the inside of the operation opening (110).

5. The head assembly of the heat pump water heater according to any one of claims 1 to 4, characterized in that: It also includes a temperature limiter (600), wherein the temperature limiter (600) is located in the installation space (150).

6. The head assembly of the heat pump water heater according to claim 5, characterized in that: It also comprises a protective cover (700), the protective cover (700) being connected to the outer shell (100), and a placement cavity being formed between the protective cover (700) and the outer shell (100), and the temperature limiter (600) being arranged in the placement cavity.

7. The head assembly of the heat pump water heater according to any one of claims 1 to 4, characterized in that: It also includes a partition (800), at least one end of which is connected to the opening of the operating port (110), and the partition (800) is suitable for isolating internal parts of the head assembly.

8. The head assembly of the heat pump water heater according to claim 7, characterized in that: An avoidance groove (820) is provided on the partition plate (800), and the avoidance groove (820) is suitable for avoiding an operating handle of the pressure relief valve (200).

9. The head assembly of the heat pump water heater according to any one of claims 1 to 4, characterized in that: It also comprises a water inlet pipe (500), the water inlet pipe (500) being connected to the inner tank of the water heater, and the pressure relief valve (200) being arranged on the water inlet pipe (500).

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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