Heat pump heating structure in dual-energy integrated water heating device

Abstract

The utility model belongs to the technical field of water heating devices, and discloses a heat pump heating structure in a dual-energy integrated water heating device, which is mainly used for solving the problems that heat pump heating structure components in the existing dual-energy integrated water heating device combining heat pump heating and other energy heating are difficult to integrate and are disordered in assembly. According to the heat pump heating system, the evaporator, the heat exchanger and the compressor in the heat pump heating system are integrally assembled through the mounting frame, and the partition plates are arranged in the mounting frame to correspondingly form the multi-layer mounting space for independent assembly of all assemblies in the heat pump heating system. According to the dual-energy integrated water heating device, integration and unification of all components in the mounting rack are achieved, the structural integration degree of a heat pump heating system is improved, and the dual-energy integrated water heating device of the type can be standardized and productized.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot water devices, specifically, it relates to a heat pump heating structure in a dual-energy integrated hot water device. Background Technology

[0002] Hot water systems are common household appliances in people's daily lives. In the traditional field of hot water systems, electric and gas hot water systems are the most widely used. However, with the continuous progress of society and the continuous development of science and technology, more and more new energy hot water systems have been created. Among them, solar hot water systems and air source hot water systems are the most efficient. Both types of hot water systems use the energy of nature itself to generate heat, which is not only energy-saving and environmentally friendly, but also more in line with China's concept of sustainable development.

[0003] Among them, air source heat pump water heaters use air source heat pump technology for heating. Utilizing the reverse Carnot principle, they absorb low-temperature heat energy from the air and convert it into high-temperature heat energy inside the machine, which is then used to heat the water. They not only have strong operational stability and simple control, but also have the advantages of high thermal efficiency and low cost, making them one of the most advanced energy utilization products in the world today. The unique heating principle of air source heat pumps also makes them the best solution for large, medium, and small centralized hot water supply systems in places such as school dormitories, hotels, and bath centers.

[0004] In recent years, with economic development and the improvement of people's living standards, hot water supply systems that combine two different energy sources have become increasingly common, such as the dual-energy water heater combining wind and solar power disclosed in patent application number "CN200920253664.3"; and products that incorporate heat pump heating systems as part of dual-energy hot water devices are also becoming more and more common, such as the dual-energy water heater combining solar and air energy disclosed in patent application number "CN201721591231.X" and the dual-energy hot water supply system that achieves economical operation disclosed in patent application number "CN201010297968.7".

[0005] However, current applications of heat pump heating systems in dual-energy hot water systems focus more on the workflow between the two heating systems, while integrated products combining a heat pump heating system with another energy heating system are rare. Since heat pump heating systems typically include multiple components such as evaporators, heat exchangers, and compressors, the final challenge in manufacturing this type of product is how to rationally integrate, unify, and standardize the assembly of these components so that the structure of the heat pump heating system can be perfectly combined with the structure of another energy heating system to form a dual-energy integrated hot water system. Utility Model Content

[0006] The purpose of this utility model is to provide a heat pump heating structure in a dual-energy integrated water heater, aiming to solve the problem of difficult integration and chaotic assembly of heat pump heating structure components in existing dual-energy integrated water heaters that combine heat pump heating with other energy heating.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The heat pump heating structure in a dual-energy integrated hot water device includes an evaporator, a heat exchanger, and a compressor. It is characterized by further including a mounting frame with multiple layers of mounting spaces, in which the evaporator, heat exchanger, and compressor are each installed in a separate layer. The mounting frame is rectangular and includes a back plate, side plates, a top plate, and a bottom plate, with the side of the mounting frame away from the back plate being open. Multiple partitions are also installed within the mounting frame, forming multiple layers of mounting spaces corresponding to the partitions and the back plate, side plates, top plate, and bottom plate.

[0009] As a further preferred embodiment of this technical solution, the partition includes a first partition, a second partition, and a third partition. A first installation space for reserving space for installation is formed between the first partition and the top plate. A second installation space for installing the evaporator is formed between the second partition and the first partition. A third installation space for installing the heat exchanger is formed between the third partition and the second partition. A fourth installation space for installing the compressor is formed between the third partition and the bottom plate.

[0010] As a further preferred embodiment of this technical solution, the evaporator is positioned between the first partition and the second partition and is installed close to the back plate. The two ends of the evaporator are respectively connected to the heat exchanger and the compressor. A heat pump air inlet is provided on the side plate corresponding to the second installation space area.

[0011] As a further preferred embodiment of this technical solution, an evaporator fan is installed on the back plate at the mounting position corresponding to the evaporator.

[0012] As a further preferred embodiment of this technical solution, the heat exchanger is a shell-and-tube heat exchanger, which is fixedly mounted on the third partition plate by the heat exchanger base; the two ends of the inner tube of the heat exchanger are used to connect to the water storage tank in the dual-energy integrated hot water device, and the two ends of its outer tube are respectively connected to the evaporator and the compressor.

[0013] As a further preferred embodiment of this technical solution, a circulation pump is also provided at the water inlet end of the inner tube of the heat exchanger, and the circulation pump is suspended on the third partition plate through a pump body mounting base; an expansion valve is also provided on the connecting pipe between the heat exchanger and the evaporator.

[0014] As a further preferred embodiment of this technical solution, reinforcing strips are also provided at the corner connections between the third partition and the back plate on both sides.

[0015] As a further preferred embodiment of this technical solution, the compressor is fixedly mounted on the base plate via a compressor base, and the medium outlet end of the compressor is connected to the evaporator and the heat exchanger via a four-way valve.

[0016] As a further preferred embodiment of this technical solution, a base pad is also installed at the bottom of the mounting bracket.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This utility model integrates the evaporator, heat exchanger, and compressor in a heat pump heating system using a mounting frame. Multiple partitions within the mounting frame create multi-layered installation spaces for the individual assembly of each component. This not only achieves integration and standardization of all components within the mounting frame, improving the structural integration of the heat pump heating system and enabling the standardization and commercialization of this type of dual-energy integrated hot water device, but also achieves modularization of different components within different installation spaces. This facilitates modular assembly of each component by workers, provides a clearer understanding of the pipe connections between components, avoids connection errors, and facilitates systematic management and maintenance of the modular components in the heat pump heating system.

[0019] 2. In order to increase the contact area between the evaporator and the outside air, the evaporator is installed between the first partition and the second partition and close to the back plate. A heat pump air inlet is opened on the side plate corresponding to the second installation space area. Outside air enters the second installation space area through the heat pump air inlet and is absorbed by the evaporator.

[0020] 3. In order to ensure that a large amount of outside air can flow over the surface of the evaporator, an evaporator fan is installed on the back plate at the installation position of the evaporator. When the evaporator fan is working, it blows air outward, which can accelerate the exhaust of air in the second installation space, thereby allowing outside air to be continuously and quickly drawn in from the heat pump air inlet, realizing rapid air circulation.

[0021] 4. In order to enable the two heating systems in the dual-energy integrated hot water device to be independently controlled, the heat exchanger adopts a shell-and-tube heat exchanger. The water storage tank in the dual-energy integrated hot water device is connected to both ends of the inner tube of the heat exchanger through the outlet pipe and the return pipe respectively, so that the water in the storage tank can circulate through the heat exchanger to achieve heat exchange. In order to ensure the stable installation of the heat exchanger, the heat exchanger base is used to fix it on the third partition plate.

[0022] 5. In order to provide sufficient power for the water in the storage tank to flow to the heat exchanger, a circulation pump is installed at the water inlet end of the inner tube of the heat exchanger; in order to fix the circulation pump, a pump body mounting base is provided to suspend it on the third partition plate; in order to realize the throttling and pressure reduction and flow regulation of the medium that has completed the heat exchange when it flows to the evaporator, an expansion valve is also provided on the connecting pipe between the heat exchanger and the evaporator.

[0023] 6. To prevent the heat exchanger from collapsing due to its excessive weight during operation, this utility model provides reinforcing strips at the corner connections between the third partition and the back plate on both sides.

[0024] 7. To ensure the compressor is securely installed, the compressor base is used to fix it to the base plate. At the same time, to prevent the evaporator from frosting in low-temperature environments, a four-way valve is provided at the medium outlet end of the compressor to connect the evaporator and the heat exchanger. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the heating process of this utility model;

[0029] Figure 4 This is a schematic diagram of the defrosting process of this utility model;

[0030] Among them, 1-evaporator, 2-heat exchanger, 3-compressor, 4-back plate, 5-side plate, 6-top plate, 7-bottom plate, 8-partition, 801-first partition, 802-second partition, 803-third partition, 9-heat pump air inlet, 10-evaporator fan, 11-heat exchanger base, 12-circulating pump, 13-pump body mounting base, 14-expansion valve, 15-reinforcing strip, 16-compressor base, 17-four-way valve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figures 1 to 4 The heat pump heating structure of the dual-energy integrated hot water device shown includes an evaporator 1, a heat exchanger 2, and a compressor 3, as well as a mounting frame. The mounting frame has multiple mounting spaces, with the evaporator 1, heat exchanger 2, and compressor 3 each installed in a separate mounting space. The mounting frame is rectangular and includes a back plate 4, side plates 5, a top plate 6, and a bottom plate 7. The two sides of the back plate 4 are connected to the two side plates 5 by a column on each side. The top plate 6 and the bottom plate 7 are connected to the back plate 4, side plates 5, and columns by screws. The side of the mounting frame away from the back plate 4 is open. Multiple partitions 8 are also installed inside the mounting frame, forming multiple mounting spaces between the partitions 8 and between them and the back plate 4, side plates 5, top plate 6, and bottom plate 7.

[0034] Furthermore, the partition 8 includes a first partition 801, a second partition 802, and a third partition 803. The first partition 801 and the top plate 6 form a first installation space for reserving space for installation. The second partition 802 and the first partition 801 form a second installation space for installing the evaporator 1. The third partition 803 and the second partition 802 form a third installation space for installing the heat exchanger 2. The third partition 803 and the bottom plate 7 form a fourth installation space for installing the compressor 3. A base pad is also installed at the bottom of the mounting bracket. The base pad is used for positioning and installing the heat pump heating structure in the dual-energy integrated hot water device in this embodiment.

[0035] In addition, to reduce the production difficulty of the mounting bracket, the back plate 4 and the side plate 5 can be set as upper and lower sections, with the upper and lower sections interlocking with each other.

[0036] In this embodiment, the mounting bracket is rectangular in shape and is attached to the other heating system and water storage tank structure in the dual-energy integrated hot water device. In order to facilitate the installation of the mounting bracket and the overall aesthetics of the dual-energy integrated hot water device, the side of the mounting bracket away from the back plate 4 is set to a shape that is compatible with the other heating system and water storage tank structure. In this embodiment, it is specifically set to an arc shape. Of course, those skilled in the art can design it to other shapes according to actual conditions.

[0037] In this embodiment, the dual-energy integrated hot water device combines a gas heating system and a heat pump heating system. The first installation space is used to house the air duct of the gas heating system, and correspondingly, an air inlet is provided on the side plate of the first installation space. Of course, in other embodiments, a solar heating system and a heat pump heating system can be combined. The first installation space is used to house the light energy conversion module of the solar heating system, etc. In short, the first installation space is a portion of the installation space reserved in advance for the corresponding external or protruding structural part of the other heating system in the dual-energy integrated hot water device.

[0038] This embodiment integrates the evaporator 1, heat exchanger 2, and compressor 3 in the heat pump heating system using a mounting frame. The mounting frame also incorporates three layers of partitions 8 to create four mounting spaces for the individual assembly of each component. This not only achieves integration and standardization of all components within the mounting frame, improving the structural integration of the heat pump heating system and facilitating the installation of this part of the structure, but also enables the standardization and commercialization of this type of dual-energy integrated hot water device. Furthermore, it achieves modularity for different components within different mounting spaces, facilitating modular assembly by workers, providing a clearer understanding of the pipe connections between components to avoid errors, and simplifying the systematic management and maintenance of the modular components in the heat pump heating system.

[0039] Example 2

[0040] This embodiment is a further supplement to Embodiment 1. In this embodiment, to increase the contact area between the evaporator 1 and the outside air, the evaporator 1 is positioned between the first partition 801 and the second partition 802, and installed close to the back plate 4. The two ends of the evaporator 1 are connected to the heat exchanger 2 and the compressor 3 respectively through pipes. More specifically, a through hole is provided on the second partition 802 for the pipes connecting the evaporator 1 to the heat exchanger 2 and the compressor 3 to pass through. A heat pump air inlet 9 is opened on the side plate 5 corresponding to the second installation space area. Outside air enters the second installation space area through the heat pump air inlet 9 and is heated by the evaporator 1.

[0041] Example 3

[0042] This embodiment is a further supplement to embodiment 2. In order to ensure that a large amount of outside air can flow over the surface of the evaporator 1, an evaporator fan 10 is installed on the back plate 4 at the installation position corresponding to the evaporator 1. More specifically, a fan mounting port is provided on the back plate 4 at the installation position corresponding to the evaporator 1. The evaporator fan 10 is installed at the fan mounting port through a fan mounting base. The two ends of the fan mounting base are fixed to two columns in the mounting frame with screws. When the evaporator fan 10 is working, it blows air outward, which can accelerate the exhaust of air in the second installation space, thereby allowing outside air to be continuously and quickly drawn in from the heat pump air inlet 9, realizing rapid air circulation.

[0043] Example 4

[0044] This embodiment is a further supplement to Embodiment 1. In this embodiment, to enable independent control of the two heating systems in the dual-energy integrated hot water device, the heat exchanger 2 is a shell-and-tube heat exchanger, which includes an inner tube and an outer tube. The two ends of the inner tube are connected to the water storage tank in the dual-energy integrated hot water device through pipes. The water to be heated flows in the inner tube. The two ends of the outer tube are connected to the evaporator 1 and the compressor 3 through pipes. The heat exchange medium flows in the outer tube. It should be noted that the corresponding substances in the inner tube and the outer tube flow in opposite directions. In order to ensure the stable installation of the heat exchanger 2, it is fixed to the third partition 803 using heat exchanger feet 11. In this embodiment, there are three heat exchanger feet 11, which are fixed to the third partition 803 with screws.

[0045] Example 5

[0046] This embodiment is a further supplement to embodiment 1. In order to provide sufficient power for the water in the water storage tank to flow to the heat exchanger 2, a circulation pump 12 is also provided at the water inlet end of the inner tube of the heat exchanger 2. In order to fix the circulation pump 12, a pump body mounting base 13 is provided to suspend it on the third partition 803. In order to realize the throttling and pressure reduction and flow regulation of the medium that has completed heat exchange when it flows to the evaporator 1, an expansion valve 14 is also provided on the connecting pipe between the heat exchanger 2 and the evaporator 1.

[0047] Example 6

[0048] This embodiment is a further supplement to embodiment 1. In order to prevent the heat exchanger 2 from collapsing the third partition 803 due to its own excessive weight during operation, reinforcing strips 15 are provided at the corner connections between the third partition 803 and the back plate 4 on both sides.

[0049] Example 7

[0050] This embodiment is a further supplement to embodiment 1. In order to ensure the stable installation of compressor 3, compressor base 16 is used to fix it on base plate 7. Compressor base 16 is triangular in shape and is connected to base plate 7 by screws at its triangular positions.

[0051] In this embodiment, to prevent frost formation on the evaporator 1 in low-temperature environments, a four-way valve 17 is installed at the medium outlet of the compressor 3 to connect the evaporator 1 and the heat exchanger 2. Because the heating principle of the heat pump is to absorb heat from the external environment by cooling the evaporator 1, it is usually required that the evaporator 1 maintain a temperature difference of about 15°C with the outside temperature in order to absorb enough heat. When the outside temperature drops below 15°C, the temperature of the evaporator 1 must drop below 0°C to work normally. If there is water on the evaporator fins at this time, frost will form. The thickening of the frost will reduce the heat absorption effect of the evaporator 1, or even prevent it from working. Therefore, defrosting is required.

[0052] In this embodiment, the direction of movement of the heat transfer medium is changed by using a four-way valve 17, and the evaporator 1 and heat exchanger 2 are swapped. In this way, the high-temperature medium compressed by the compressor 3 will directly enter the evaporator 1 to defrost the evaporator 1.

[0053] like Figure 3 As shown, when the heat pump heating system is operating normally, the solenoid coil of the four-way valve 17 is not energized. The heat transfer medium compressed by the compressor 3 flows through the four-way valve 17 to the heat exchanger 2 for heat exchange circulation; as... Figure 4 As shown, when the system needs to defrost, the solenoid coil of the four-way valve 17 is energized, the internal passage of the four-way valve 17 changes, connecting the compressor 3 and the evaporator 1. The heat exchanger 2 is then forced to become a heat-absorbing component, and the evaporator 1 obtains a high-temperature and high-pressure heat transfer medium to complete the defrosting.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat pump heating structure in a dual-energy integrated hot water system, comprising an evaporator (1), a heat exchanger (2), and a compressor (3), characterized in that, It also includes a mounting frame, which has multiple mounting spaces, in which the evaporator (1), heat exchanger (2) and compressor (3) are respectively installed in a separate mounting space; the mounting frame is rectangular and includes a back plate (4), side plates (5), top plate (6) and bottom plate (7), with the side of the mounting frame away from the back plate (4) being open; multiple partitions (8) are also installed in the mounting frame, and multiple mounting spaces are formed between the multiple partitions (8) and between them and the back plate (4), side plates (5), top plate (6) and bottom plate (7).

2. The heat pump heating structure according to claim 1, characterized in that, The partition (8) includes a first partition (801), a second partition (802), and a third partition (803). The first partition (801) and the top plate (6) form a first installation space for reserving installation space. The second partition (802) and the first partition (801) form a second installation space for installing the evaporator (1). The third partition (803) and the second partition (802) form a third installation space for installing the heat exchanger (2). The third partition (803) and the bottom plate (7) form a fourth installation space for installing the compressor (3).

3. The heat pump heating structure according to claim 2, characterized in that, The evaporator (1) is positioned between the first partition (801) and the second partition (802) and is installed close to the back plate (4). The two ends of the evaporator (1) are connected to the heat exchanger (2) and the compressor (3) respectively. A heat pump air inlet (9) is opened on the side plate (5) corresponding to the second installation space area.

4. The heat pump heating structure according to claim 3, characterized in that, An evaporator fan (10) is installed on the back plate (4) at the installation position corresponding to the evaporator (1).

5. The heat pump heating structure according to claim 2, characterized in that, The heat exchanger (2) is a shell-and-tube heat exchanger, which is fixedly installed on the third partition (803) by the heat exchanger base (11); the two ends of the inner tube of the heat exchanger (2) are used to connect to the water storage tank, and the two ends of its outer tube are respectively connected to the evaporator (1) and the compressor (3).

6. The heat pump heating structure according to claim 5, characterized in that, The heat exchanger (2) is also equipped with a circulating pump (12) at the water inlet end of the inner tube. The circulating pump (12) is suspended on the third partition (803) by a pump body mounting base (13). An expansion valve (14) is also provided on the connecting pipe between the heat exchanger (2) and the evaporator (1).

7. The heat pump heating structure according to claim 5, characterized in that, The third partition (803) is also provided with reinforcing strips (15) at the corners where it connects to the back plate (4).

8. The heat pump heating structure according to claim 2, characterized in that, The compressor (3) is fixedly mounted on the base plate (7) via the compressor base (16), and the medium outlet end of the compressor (3) is connected to the evaporator (1) and the heat exchanger (2) via a four-way valve (17).

9. The heat pump heating structure according to any one of claims 1 to 8, characterized in that, The mounting bracket is also equipped with a base pad at its bottom.

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