Heat pump assembly and heat pump water heater

Abstract

The invention provides a heat pump assembly and a heat pump water heater. The heat pump assembly comprises an electric appliance box, a draught fan, a water pan and a heat pipe structure. The heat pipe structure is provided with a first heat absorption section, a second heat absorption section and a heat dissipation section. According to the heat pump assembly and the heat pump water heater, heat generated by the electric appliance box is obtained through the first heat absorption section, heat generated by the draught fan is obtained through the second heat absorption section, the heat is transferred to the water pan through the heat transfer effect of the heat pipe, and then heating of the water pan is achieved; the heat of the electric appliance box and the heat of the fan can be utilized to avoid the problem of ice accumulation at the water pan, and the heat dissipation effect on the electric appliance box and the fan can be realized by utilizing the heat dissipation capability at the water pan; the problems that in the prior art, a heat dissipation structure and a heating structure need to be additionally arranged, so that energy consumption is increased, cost is increased, and the requirements for energy conservation and emission reduction are not met are effectively solved, additional energy consumption is reduced, and the energy conservation performance and reliability of the heat pump water heater are improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat pump water heaters, in particular to a heat pump component and a heat pump water heater. Background Art

[0002] During the operation of the heat pump water heater, the frequency converter and the motor will generate heat, especially the components on the frequency converter, which will generate a lot of heat. If the temperature of the components on the motor and the frequency converter cannot be effectively reduced, it will affect the reliability of the product and greatly reduce the service life of the product. Therefore, it is necessary to dissipate heat for the electrical box and the frequency converter. The heat dissipation method of the prior art is generally air-cooled convection heat dissipation or refrigerant heat dissipation. At the same time, when the heat pump water heater is running in cold weather, the water receiving tray will freeze due to the accumulation of condensed water and block the drainage hole, causing the water receiving tray to be unable to drain normally and cause ice accumulation problems, which will cause damage to the heat exchanger and affect the normal operation of the heat pump water heater. In the prior art, electric heating belts are generally used for heating. In other words, the heat pump water heater in the prior art needs to set up an additional heat dissipation structure for the electrical box to dissipate heat, and also needs to set up an additional heating structure for the water receiving tray to heat, which will increase the energy consumption and cost of the heat pump water heater, and does not meet the requirements of energy conservation and emission reduction. Summary of the invention

[0003] In order to solve the technical problem in the prior art that both the heat dissipation of the electrical box and the like and the heating of the water tray increase the energy consumption and cost, a heat pump assembly and a heat pump water heater are provided which utilize a heat pipe to transfer the heat of the electrical box and the heat of the fan to the water tray for utilization so as to reduce energy consumption and production costs and meet the requirements of energy conservation and emission reduction.

[0004] A heat pump assembly comprises an electrical box, a fan, a water receiving tray and a heat pipe structure, wherein the heat pipe structure comprises a first heat absorbing section, a second heat absorbing section and a heat dissipating section, wherein the first heat absorbing section and the second heat absorbing section are both connected to the heat dissipating section, and the first heat absorbing section is arranged on the electrical box, the second heat absorbing section is arranged on the fan, and the heat dissipating section is arranged on the water receiving tray.

[0005] The first heat absorbing section and the second heat absorbing section are arranged in parallel; or, the first heat absorbing section is connected to the heat dissipating section through the second heat absorbing section.

[0006] The heat pump assembly further comprises a heat absorbing sheet, which is arranged on the first heat absorbing section and is fitted to the electrical box.

[0007] A heat-conducting material layer is arranged between the heat-absorbing sheet and the electrical appliance box.

[0008] A power module is arranged in the electrical box, and the heat absorbing sheet is arranged in close contact with the power module.

[0009] The fan has a driving motor, and the second heat absorption section surrounds the outer shell of the driving motor.

[0010] The heat pump assembly further comprises a heat-conducting pressure plate, which is arranged on the heat dissipation section and on the water receiving tray.

[0011] The heat pump assembly further comprises a heat exchanger, wherein the heat exchanger is arranged on the water receiving tray, and the heat dissipation section and / or the heat conduction pressure plate are arranged between the heat exchanger and the water receiving tray.

[0012] The heat-conducting pressure plate is located on one side of the fan, and the fan can drive gas to flow through the heat-conducting pressure plate.

[0013] A heat pump water heater comprises the above-mentioned heat pump assembly.

[0014] The heat pump assembly and heat pump water heater provided by the present invention obtain heat generated by the electrical box through the first heat absorption section, obtain heat generated by the fan through the second heat absorption section, and utilize the heat transfer effect of the heat pipe to transfer the heat to the water receiving tray, thereby realizing heating of the water receiving tray. It can not only utilize the heat of the electrical box and the heat of the fan to avoid the problem of ice accumulation in the water receiving tray, but also utilize the heat dissipation capacity of the water receiving tray to achieve the heat dissipation effect of the electrical box and the fan, effectively overcoming the problems in the prior art of requiring additional heat dissipation structure and heating structure, resulting in increased energy consumption, increased cost, and non-compliance with energy conservation and emission reduction requirements, reducing additional energy consumption, and improving the energy saving and reliability of the heat pump water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of a heat pump assembly provided by an embodiment of the present invention;

[0016] Figure 2 Another cross-sectional view of a heat pump assembly provided by an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of the structure of a heat pipe structure of a heat pump assembly provided by an embodiment of the present invention;

[0018] Figure 4 A three-dimensional diagram of a heat pipe structure of a heat pump assembly provided by an embodiment of the present invention;

[0019] Figure 5 A schematic diagram of the structure of a heat dissipation section and a heat-conducting pressure plate of a heat pump assembly provided in an embodiment of the present invention;

[0020] In the figure:

[0021] 1. Electrical box; 2. Fan; 3. Water tray; 4. Heat pipe structure; 41. First heat absorption section; 42. Second heat absorption section; 43. Heat dissipation section; 5. Heat absorption sheet; 6. Heat conduction pressure plate; 7. Heat exchanger. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", 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 direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] During the operation of the heat pump water heater, the frequency converter and the motor will generate heat, especially the components on the frequency converter, which will generate a lot of heat. If the temperature of the components on the motor and the frequency converter cannot be effectively reduced, it will affect the reliability of the product and greatly reduce the service life of the product. Therefore, it is necessary to dissipate heat for the electrical box and the frequency converter. The heat dissipation method of the prior art is generally air-cooled convection heat dissipation or refrigerant heat dissipation. At the same time, when the heat pump water heater is running in cold weather, the water receiving tray will freeze due to the accumulation of condensed water and block the drainage hole, causing the water receiving tray to be unable to drain normally and cause ice accumulation problems, which will cause damage to the heat exchanger and affect the normal operation of the heat pump water heater. In the prior art, electric heating belts are generally used for heating. In other words, the heat pump water heater in the prior art needs to set up an additional heat dissipation structure for the electrical box to dissipate heat, and also needs to set up an additional heating structure for the water receiving tray to heat, which will increase the energy consumption and cost of the heat pump water heater, and does not meet the requirements of energy conservation and emission reduction.

[0028] To this end, the present application provides a Figures 1 to 5 The heat pump assembly shown includes an electrical box 1, a fan 2, a water receiving tray 3 and a heat pipe structure 4, wherein the heat pipe structure 4 has a first heat absorbing section 41, a second heat absorbing section 42 and a heat dissipating section 43, wherein the first heat absorbing section 41 and the second heat absorbing section 42 are both connected to the heat dissipating section 43, and the first heat absorbing section 41 is arranged on the electrical box 1, the second heat absorbing section 42 is arranged on the fan 2, and the heat dissipating section 43 is arranged on the water receiving tray 3. The heat generated by the electrical box 1 is obtained through the first heat absorbing section 41, and the heat generated by the fan 2 is obtained through the second heat absorbing section 42, and the heat is transferred to the water receiving tray 3 by utilizing the heat transfer effect of the heat pipe, thereby achieving heating of the water receiving tray 3. The heat of the electrical box 1 and the heat of the fan 2 can be utilized to avoid the problem of ice accumulation in the water receiving tray 3, and the heat dissipation capacity of the water receiving tray 3 can be utilized to achieve the heat dissipation effect of the electrical box 1 and the fan 2, effectively overcoming the problems in the prior art of requiring additional heat dissipation structures and heating structures, resulting in increased energy consumption, increased costs, and non-compliance with energy conservation and emission reduction requirements, reducing additional energy consumption, and improving the energy saving and reliability of the heat pump water heater.

[0029] When the heat pump assembly is working, the electronic components (such as power module, frequency conversion controller, etc.) arranged in the electrical box 1 will generate heat, causing the temperature of the electrical box 1 to rise. At the same time, when the fan 2 is rotating, the motor driving the fan 2 to rotate will also generate heat and need to be dissipated. For this reason, the heat pipe structure 4 of the present application has a first heat absorption section 41 and a second heat absorption section 42, so that the heat of the electrical box 1 and the heat of the fan 2 can be absorbed and transferred to the heat dissipation section 43, and the heat is used to heat the water tray 3, thereby avoiding the water tray 3 from being heated. Ice formation, especially when the ambient temperature is low, is avoided to form ice in the water receiving pan 3, thereby ensuring the reliability of the heat exchanger above the water receiving pan 3. When the ambient temperature is high, although there is no freezing temperature in the water receiving pan 3, the heat exchanger above the water receiving pan 3 needs to absorb heat to meet the heating of the indoor environment of the heat pump, and can also absorb and use the heat of the heat dissipation section 43. At the same time, the fan 2 can drive the gas to flow through the water receiving pan 3 and the heat dissipation section 43, and can further dissipate the heat of the heat dissipation section 43, thereby ensuring the working reliability of the heat pipe structure 4.

[0030] Among them, a liquid absorption core is arranged in the heat pipe structure 4, one end of the liquid absorption core is arranged in the heat dissipation section 43, and the other end is connected with the first heat absorption section 41 and the second heat absorption section 42. The working medium in the heat pipe structure 4 absorbs heat and vaporizes in the first heat absorption section 41 and the second heat absorption section 42, and then flows to the heat dissipation section 43 for heat dissipation. The working medium liquefies after heat dissipation in the heat dissipation section 43, and the liquefied working medium can be sent back to the first heat absorption section 41 and the second heat absorption section 42 by the liquid absorption core, thereby realizing the circulation of the working medium in the heat pipe structure 4. In the whole process, no additional energy is required, so the purpose of reducing additional energy consumption and improving the energy saving and reliability of the heat pump water heater can be achieved.

[0031] As an implementation mode, the first heat absorption section 41 and the second heat absorption section 42 are arranged in parallel. At this time, the heat of the electrical box 1 and the heat of the fan 2 form two paths and are sent to the heat dissipation section 43 for heat dissipation, which can avoid the heat of the electrical box 1 and the heat of the fan 2 from interfering with each other. However, the flow rate of the liquid working medium flowing back from the heat dissipation section 43 to the first heat absorption section 41 and the second heat absorption section 42 cannot be controlled, and there will be a problem of unreliable heat dissipation of the electrical box 1 and / or the heat dissipation of the fan 2.

[0032] As another embodiment, the first heat absorption section 41 is connected to the heat dissipation section 43 through the second heat absorption section 42. Although the heat of the electrical box 1 will affect the temperature of the fan 2, the gaseous working fluid generated at the electrical box 1 has limited heating capacity for the fan 2. The fan 2 can still be ensured to work under normal temperature conditions and take away the heat that exceeds the normal temperature conditions. At the same time, the circulation reliability of the working fluid in the heat pipe structure 4 can also be ensured, thereby ensuring the working reliability of the heat pump assembly.

[0033] The heat pump assembly further includes a heat absorbing sheet 5, which is disposed on the first heat absorbing section 41 and is fitted to the electrical box 1. The heat absorbing sheet 5 is used to adjust the pipe shape of the first heat absorbing section 41 to a flat plate shape, thereby increasing the contact area with the electrical box 1, thereby improving the heat exchange efficiency between the first heat absorbing section 41 and the electrical box 1, and ensuring the heat dissipation effect of the electrical box 1.

[0034] A heat-conducting material layer is provided between the heat-absorbing sheet 5 and the electrical box 1, and the heat-conducting material layer is utilized to further improve the heat exchange efficiency between the heat-absorbing sheet 5 and the electrical box 1, thereby improving the heat exchange efficiency between the first heat-absorbing section 41 and the electrical box 1, and ensuring the heat dissipation effect of the electrical box 1.

[0035] Specifically, the electrical box 1 is provided with a power module, and the heat absorbing sheet 5 is arranged in close contact with the power module. At this time, the heat absorbing sheet 5 is directly used to absorb the heat of the power module in the electrical box 1, thereby directly avoiding the temperature rise of the electrical box 1, and directly ensuring the temperature of the power module is reliable without transferring the heat of the power module, thereby ensuring the reliability of the electrical box 1 and the power module arranged therein. The power module includes a controller power device (such as an IPM module).

[0036] The fan 2 has a driving motor, and the second heat absorption section 42 surrounds the outer shell of the driving motor. By surrounding the outer shell of the driving motor with the second heat absorption section 42, the heat absorption of the driving motor by the second heat absorption section 42 can be improved, thereby improving the heat dissipation effect of the driving motor and the fan 2.

[0037] The heat pump assembly also includes a heat-conducting pressure plate 6, which is arranged on the heat dissipation section 43, and the heat-conducting pressure plate 6 is arranged on the water receiving tray 3. The heat-conducting pressure plate 6 is used to increase the heat transfer area between the heat dissipation section 43 and the water receiving tray 3, thereby improving the heating efficiency of the heat dissipation section 43 to the water receiving tray 3, and also improving the heat dissipation capacity of the heat dissipation section 43.

[0038] The heat pump assembly also includes a heat exchanger 7, which is arranged on the water receiving tray 3, and the heat dissipation section 43 and / or the heat conductive pressure plate 6 are arranged between the heat exchanger 7 and the water receiving tray 3. When the ambient temperature is high, the water receiving tray 3 will not freeze and the heat absorption of the heat dissipation section 43 is less. However, since the heat pump assembly always needs to be in a heating state, its heat exchanger 7 is always in a heat absorption state. At this time, the heat exchanger 7 can also absorb the heat of the heat dissipation section 43, thereby ensuring the heat dissipation capacity of the heat dissipation section 43, thereby improving the reliability of the heat pipe structure 4 and the working reliability of the heat pump assembly.

[0039] The heat-conducting pressure plate 6 is located on one side of the fan 2, and the fan 2 can drive the gas to flow through the heat-conducting pressure plate 6. The airflow generated by the fan 2 flows through the heat-conducting pressure plate 6, so as to dissipate the heat of the heat dissipation section 43, thereby ensuring the heat dissipation capacity of the heat dissipation section 43, and improving the reliability of the heat pipe structure 4 and the working reliability of the heat pump assembly.

[0040] A heat pump water heater comprises the above-mentioned heat pump assembly.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heat pump assembly, characterized in that: The invention comprises an electrical box (1), a fan (2), a water receiving tray (3) and a heat pipe structure (4); the heat pipe structure (4) comprises a first heat absorbing section (41), a second heat absorbing section (42) and a heat dissipating section (43); the first heat absorbing section (41) and the second heat absorbing section (42) are both connected to the heat dissipating section (43); the first heat absorbing section (41) is arranged on the electrical box (1), the second heat absorbing section (42) is arranged on the fan (2), and the heat dissipating section (43) is arranged on the water receiving tray (3).

2. The heat pump assembly according to claim 1, characterized in that: The first heat absorbing section (41) and the second heat absorbing section (42) are arranged in parallel; or the first heat absorbing section (41) is connected to the heat dissipating section (43) through the second heat absorbing section (42).

3. The heat pump assembly according to claim 1, characterized in that: The heat pump assembly further comprises a heat absorbing sheet (5), wherein the heat absorbing sheet (5) is arranged on the first heat absorbing section (41), and the heat absorbing sheet (5) is arranged in close contact with the electrical box (1).

4. The heat pump assembly according to claim 3, characterized in that: A heat-conducting material layer is provided between the heat-absorbing sheet (5) and the electrical appliance box (1).

5. The heat pump assembly according to claim 3, characterized in that: A power module is arranged in the electrical box (1), and the heat absorbing sheet (5) is arranged in close contact with the power module.

6. The heat pump assembly according to claim 1, characterized in that: The fan (2) has a driving motor, and the second heat absorption section (42) surrounds the outer shell of the driving motor.

7. The heat pump assembly according to claim 1, characterized in that: The heat pump assembly further comprises a heat-conducting pressure plate (6), wherein the heat-conducting pressure plate (6) is arranged on the heat dissipation section (43), and the heat-conducting pressure plate (6) is arranged on the water receiving tray (3).

8. The heat pump assembly according to claim 7, characterized in that: The heat pump assembly further comprises a heat exchanger (7), wherein the heat exchanger (7) is arranged on the water receiving tray (3), and the heat dissipation section (43) and / or the heat conduction pressure plate (6) are arranged between the heat exchanger (7) and the water receiving tray (3).

9. The heat pump assembly according to claim 7, characterized in that: The heat-conducting pressure plate (6) is located on one side of the fan (2), and the fan (2) is capable of driving gas to flow through the heat-conducting pressure plate (6).

10. A heat pump water heater, comprising the heat pump assembly according to any one of claims 1 to 9.

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