Solar heat pump

Abstract

The utility model relates to the technical field of solar equipment, in particular to a solar heat pump which comprises an integrated box body and an evaporator arranged outside the integrated box body, the external evaporator is arranged at the position where the sun can effectively irradiate and can effectively ventilate, and a compressor, a condenser and a throttling device are arranged in the integrated box body. The evaporator furthest utilizes the energy of solar radiation, so that the energy efficiency ratio of the system is improved, and the medium is preheated once before being absorbed by the compressor. Meanwhile, the evaporator is arranged outdoors, the indoor occupied area is reduced, noise can be effectively reduced, the contact area between the surface of the evaporator and air can be greatly increased, the air inflow of the compressor is increased, and the efficiency of the compressor is in the optimal operation state. According to the spiral black gold fins of the evaporator, the superficial area for heat exchange with a refrigerant is increased, when the refrigerant flows through the fins, a flowing path is twisted, flowing disturbance is increased, the thickness of a temperature boundary layer is reduced, the contact time of air and the fins is prolonged, and the heat exchange efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of solar energy heating equipment technology, specifically a solar heat pump. Background Technology

[0002] Currently, integrated heat pump units are widely used in many engineering projects. While this high degree of integration integrates the compressor and housing, the limited surface area of ​​the evaporator's heat-absorbing portion in contact with the air means that the compressor's full efficiency cannot be maximized. Furthermore, the compressor's internal location hinders heat dissipation, and noise levels increase over time, becoming a major source of consumer complaints. Therefore, it is urgent to address these technical challenges encountered during use. Summary of the Invention

[0003] In view of the shortcomings of the prior art and to solve the problems mentioned in the background art, the technical problem to be solved by this utility model is to provide a solar heat pump that solves the heat dissipation and noise problems and greatly improves the energy efficiency of the system by removing the evaporator from the original integrated casing and placing it outdoors.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution: a solar heat pump, comprising an integrated housing and an evaporator disposed outside the integrated housing. The external evaporator is positioned in a location with effective solar radiation and ventilation. The integrated housing contains a compressor, a condenser, and a throttling device. A compressor circulation loop is provided between the compressor and the evaporator. The compressor circulation loop includes an outlet pipe located between the compressor outlet and the evaporator inlet, and a return pipe located between the evaporator outlet and the compressor return port. A heat exchange coil is connected to the return pipe and is wound around the outer wall of the condenser. The throttling device is located on the outlet pipe between the heat exchange coil and the evaporator inlet. The evaporator is positioned in a location with effective solar radiation, maximizing the utilization of solar radiation energy and improving the system's energy efficiency ratio, allowing the medium to be preheated once before being absorbed by the compressor. Simultaneously, placing the evaporator outdoors reduces the indoor footprint and effectively reduces noise. The increased surface area of ​​the evaporator in contact with the air increases the compressor's air intake, ensuring optimal compressor efficiency.

[0005] As a further embodiment of this invention, the evaporator is a finned evaporator, comprising a set of horizontally and parallelly arranged evaporation tubes. Fins are provided on both sides of the evaporation tubes, with an air inlet on the outside of one side of the fins. A fan is installed at the air inlet. One end of the evaporation tube is connected to an evaporation inlet pipe, which is connected to an outlet pipe. The other end of the evaporation tube is connected to an evaporation outlet pipe, which is connected to a return pipe. The fan drives air to flow along the surface of the evaporator, accelerating the heat exchange process. The fins increase the flow of refrigerant and the evaporation speed. The refrigerant flows through the evaporation tubes, absorbing heat from the surrounding air and evaporating within the tubes. The faster the airflow, the higher the evaporation efficiency.

[0006] As a further embodiment of this invention, the evaporator fins are spiral-shaped black-gold fins, arranged vertically along the axis of the evaporator tube. The spiral-shaped black-gold fins increase the surface area for heat exchange with the refrigerant. When the refrigerant flows through the fins, the flow path is twisted, increasing flow disturbance, reducing the thickness of the temperature boundary layer, increasing the contact time between the air and the fins, and improving heat exchange efficiency.

[0007] As a further embodiment of this invention, a collection tray is provided below the evaporator. Water vapor in the air condenses into condensate on the surface of the evaporator, and the condensate falls into the collection tray for collection. This collects the condensate generated during the evaporation process. Since the condensate comes from water vapor in the air, the collection tray prevents the condensate from dripping directly onto the equipment, protecting the evaporator from corrosion or damage.

[0008] As a further embodiment of this invention, the evaporator is provided with an outer casing, on which a connecting frame is mounted. The outer casing is installed on the exterior wall of a building or house via the connecting frame. This installation of the evaporator's outer casing on the exterior wall ensures stable and reliable installation while effectively freeing up space within the building, making the indoor environment more spacious. Outdoor installation also ensures that the noise and heat emissions from the evaporator do not affect the indoor environment, improving living comfort.

[0009] As a further embodiment of this invention, the throttling device is an expansion valve, an orifice plate, a short tube, or a capillary tube. The throttling device effectively reduces the pressure and temperature of the refrigerant and effectively controls the refrigerant flow rate, allowing the refrigerant to enter a saturated evaporation state in the evaporator, thereby improving heat exchange efficiency and enabling the system to efficiently absorb and release heat.

[0010] As a further improvement of this invention, a liquid outlet temperature sensor is provided at the compressor outlet, and an inlet temperature sensor is provided at the compressor inlet. This enables real-time monitoring and precise control of the refrigeration system, ensuring its efficient, safe, and stable operation.

[0011] As a further embodiment of this invention, the heat exchange coil includes a coil inlet and a coil outlet. Both the coil inlet and outlet are equipped with coil connectors, each with a first flared end. A liquid outlet pipe, which mates with the coil connector, has a second flared end that matches the first flared end. The first and second flared ends are then joined and sealed together. This flared connection effectively improves the sealing of the pipeline, preventing refrigerant or fluid leakage and ensuring the stability and safety of the system. Especially under high pressure or high temperature environments, it effectively prevents leakage.

[0012] As a further improvement of this invention, the compressor circulation loop contains a refrigerant, and all pipes in the compressor circulation loop are connected by copper pipes. Copper pipes have excellent thermal conductivity, effectively improving heat transfer efficiency and ensuring that the refrigerant rapidly absorbs and releases heat in the system, thereby improving the overall cooling efficiency. They also have strong corrosion resistance and high-temperature resistance, stably bearing the flow pressure of high-temperature refrigerant and reducing damage to the system caused by pipe rupture or deformation.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This system includes an integrated housing and an evaporator installed outside the integrated housing. The external evaporator is positioned in a location with effective sunlight exposure and ventilation. The integrated housing houses a compressor, a condenser, and a throttling device. The evaporator maximizes the utilization of solar radiation energy, improving the system's energy efficiency ratio and preheating the medium before it is absorbed by the compressor. Simultaneously, placing the evaporator outdoors reduces the indoor footprint and effectively lowers noise. The increased surface area of ​​the evaporator in contact with air increases the compressor's air intake, allowing the compressor to operate at its optimal efficiency.

[0014] The spiral black-gold fins of the evaporator increase the surface area for heat exchange with the refrigerant. When the refrigerant flows through the fins, the flow path is twisted, which increases the flow disturbance, reduces the thickness of the temperature boundary layer, and increases the contact time between the air and the fins, resulting in high heat exchange efficiency.

[0015] The compressor's circulation loop uses copper tubing connections. This provides excellent thermal conductivity, effectively improving heat transfer efficiency and ensuring rapid heat absorption and release by the refrigerant within the system, thereby enhancing overall cooling efficiency. It also exhibits strong corrosion resistance and high-temperature resistance, stably bearing the flow pressure of high-temperature refrigerants and reducing damage caused by pipe ruptures or deformation. The flared connections at all pipe ends effectively improve the piping's sealing, preventing refrigerant or fluid leakage and ensuring system stability and safety, especially under high-pressure or high-temperature environments. This ensures reliable and stable system operation. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall process of this utility model.

[0017] In the diagram: 1-Integrated housing, 2-Condenser, 3-Compressor circulation loop, 301-Liquid outlet pipe, 311-First flare, 302-Heat exchange coil, 303-Liquid return pipe, 4-Throttling device, 5-Evaporator, 501-Outer casing, 511-Connecting frame, 502-Fan, 503-Liquid collection tray, 6-Inlet temperature sensor, 7-Compressor, 8-Outlet temperature sensor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The serial numbers assigned to components in this document, such as "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application...

[0020] Unless otherwise specified, "connection" includes both direct and indirect connections. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature means that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature means that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] As shown in Figure 1, a solar heat pump includes an integrated housing 1 and an evaporator 5 disposed outside the integrated housing. The evaporator 5 is a finned evaporator, comprising a set of horizontally and parallelly arranged evaporation tubes with fins on both sides. The fins of the evaporator are spiral-shaped black-gold fins, arranged vertically along the axis of the evaporation tubes. An air inlet is provided on the outside of one side of the fins, and a fan 502 is provided at the air inlet. The external evaporator is positioned in a location with effective solar radiation and ventilation. An external casing 501 is provided outside the evaporator, and a connecting frame 511 is provided on the external casing. The external casing is mounted on the exterior wall of a building or house via the connecting frame. The installation of the evaporator's external casing on the exterior wall of a building or house via the connecting frame saves indoor space, and the noise and heat exchange of the evaporator do not affect the indoor environment, improving living comfort. When outdoor air passes through the surface of the evaporator, the flow rate is high and the flow is sufficient, resulting in sufficient heat exchange with the refrigerant.

[0023] The evaporator is located in a position where it is effectively exposed to sunlight, maximizing the absorption of solar radiation energy. The air passing through the evaporator fins is preheated into hot air. When the hot air passes through the surface of the evaporator fins, the spiral black-gold fins exchange heat with the refrigerant. As the refrigerant flows through the fins, its flow path is twisted, generating turbulent flow. The temperature boundary layer is thin, allowing the air to fully contact the fins and transfer heat to the refrigerant, thus raising the refrigerant temperature.

[0024] A liquid collection tray 503 is provided below the evaporator. Water vapor in the air condenses into condensate on the surface of the evaporator, and the condensate falls into the liquid collection tray for collection. Water vapor in the air undergoes heat exchange and condenses into water droplets on the surface of the fins, and the condensate falls into the liquid collection tray for collection.

[0025] The integrated housing 1 houses a compressor 7, a condenser 2, and a throttling device 4. The throttling device 4 is located on the liquid outlet pipe between the heat exchange coil and the evaporator inlet. The throttling device 4 can be an expansion valve, orifice plate, short pipe, or capillary tube. When the compressor starts, the refrigerant is compressed by the compressor 7 to form a high-temperature, high-pressure gaseous refrigerant. After heat exchange in the condenser, it becomes a medium-temperature, high-pressure gaseous refrigerant. The throttling device then opens, and the medium-temperature, high-pressure gaseous refrigerant is cooled by throttling to form a low-temperature, low-pressure gaseous-liquid refrigerant. This refrigerant then enters the evaporator for heat exchange and heating to form a low-temperature, low-pressure gaseous refrigerant.

[0026] A compressor circulation loop 3 is provided between the compressor and the evaporator. Refrigerant is circulated in the compressor circulation loop, and all pipes in the compressor circulation loop 3 are connected by copper pipes.

[0027] The compressor circulation loop 3 includes a liquid outlet pipe 301 located between the compressor liquid outlet and the evaporator inlet, a liquid outlet temperature sensor 8 located at the compressor liquid outlet, a liquid return pipe 303 located between the evaporator outlet and the compressor liquid return port, and an inlet liquid temperature sensor 6 located at the compressor liquid inlet. The liquid outlet temperature sensor and the inlet liquid temperature sensor monitor and precisely control the refrigerant circulation temperature in real time.

[0028] A heat exchange coil 302 is connected to the return liquid pipeline. The heat exchange coil includes a coil inlet and a coil outlet. Both the coil inlet and the coil outlet are provided with coil connectors 1. The coil connectors are configured as first flared openings 311. The outlet pipe, which mates with the coil connectors, is provided with a second flared opening that matches the first flared opening. The first flared opening and the second flared opening are connected and sealed together. The heat exchange coil is wound around the outer wall of the condenser. Chilled water circulates inside the condenser, and the chilled water exchanges heat with the refrigerant in the heat exchange coil.

[0029] After heat exchange in condenser 2, the refrigerant becomes a medium-temperature, high-pressure gaseous refrigerant. When throttling device 4 is opened, the medium-temperature, high-pressure gaseous refrigerant is cooled by throttling to form a low-temperature, low-pressure gaseous-liquid refrigerant. It then enters evaporator 5 for heat exchange and heating to form a low-temperature, low-pressure gaseous refrigerant. The low-temperature, low-pressure gaseous refrigerant is then circulated back to compressor 7 and compressed again to form a high-temperature, high-pressure gaseous refrigerant.

[0030] In this specification, the terms "connection," "installation," "fixing," and "setting" are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via intermediate components without affecting the relationship between components or the technical effect; it can also mean an integral connection or a partial connection. Those skilled in the art can understand the specific meaning of these terms in this utility model or utility model based on the specific circumstances. The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A solar heat pump, characterized in that: The integrated housing includes an integrated housing (1) and an evaporator (5) located outside the integrated housing. The external evaporator is located in a position where it is effectively exposed to sunlight and can be effectively ventilated. The integrated housing contains a compressor (7), a condenser (2), and a throttling device (4). A compressor circulation loop (3) is provided between the compressor and the evaporator. The compressor circulation loop includes an outlet pipe (301) located between the compressor outlet and the evaporator inlet, and a return pipe (303) located between the evaporator outlet and the compressor return port. A heat exchange coil (302) is connected to the return pipe. The heat exchange coil is wound around the outer wall of the condenser. The throttling device (4) is located on the outlet pipe between the heat exchange coil and the evaporator inlet.

2. A solar heat pump according to claim 1, characterized in that: The evaporator (5) is a finned evaporator. The finned evaporator includes a set of horizontally and parallelly arranged evaporation tubes. Fins are provided on both sides of the evaporation tubes. An air inlet is set on the outside of one side of the fin. A fan (502) is provided at the air inlet. One end of the evaporation tube is connected to an evaporation liquid inlet pipe, which is connected to an evaporation liquid outlet pipe. The other end of the evaporation tube is connected to an evaporation liquid outlet pipe, which is connected to a return liquid pipe.

3. A solar heat pump according to claim 2, characterized in that: The evaporator (5) has spiral black and gold fins, which are arranged vertically along the axis of the evaporator tube.

4. A solar heat pump according to claim 2, characterized in that: The evaporator (5) is provided with a liquid collection tray (503) below it. Water vapor in the air condenses into condensate on the surface of the evaporator and falls into the liquid collection tray for collection.

5. A solar heat pump according to claim 1, characterized in that: The evaporator is provided with an outer shell (501), and a connecting frame (511) is provided on the outer shell. The outer shell is installed on the exterior wall of a building or house through the connecting frame.

6. A solar heat pump according to claim 1, characterized in that: The throttling device (4) is an expansion valve, orifice plate, short pipe or capillary tube.

7. A solar heat pump according to claim 1, characterized in that: The compressor is equipped with an outlet temperature sensor (8) and an inlet temperature sensor (6).

8. A solar heat pump according to claim 1, characterized in that: The heat exchange coil (302) includes a coil inlet and a coil outlet. Both the coil inlet and the coil outlet are provided with coil connectors. The coil connectors are configured as a first flared port (311). The liquid outlet pipe that cooperates with the coil connectors is provided with a second flared port that matches the first flared port. The first flared port and the second flared port are connected and sealed.

9. A solar heat pump according to claim 1, characterized in that: The compressor circulation loop (3) contains a refrigerant, and all the pipes in the compressor circulation loop (3) are connected by copper pipes.

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