Solar energy and heat pump combined heating device

Abstract

The utility model relates to energy -conserving energy utilization technical field discloses a kind of solar energy and heat pump combined heat supply device, including water storage tank and air source heat pump and controller, the both sides of water storage tank are provided with several solar energy heat collection pipe, first refrigerant inlet and outlet pipe and second refrigerant inlet and outlet pipe are respectively provided between water storage tank and air source heat pump, the both sides of air source heat pump are equipped with water tank, water tank top end is equipped with water pump, the output end of water pump is fixedly connected with the water guide pipe connected to the water storage tank inside, the integrated light panel of water storage tank outer wall is located in several solar energy heat collection pipe inner end, integrated light panel board surface is embedded with the auxiliary heating pipe of L type shape arrangement, and auxiliary heating pipe is connected to water tank inner bottom end and penetrates, auxiliary heating pipe wall cavity is filled with phase change material, the utility model stores the redundant heat when light is sufficient, release heat for water tank heat preservation after light weakening, prolong solar energy heating length, reduce the frequency of heat pump start due to solar energy deficiency.

Description

Technical Field

[0001] This utility model relates to the field of energy conservation and utilization technology, specifically to a solar energy and heat pump combined heating device. Background Technology

[0002] Solar energy, as a widely distributed and low-cost clean energy source, has great potential for application in the heating field. However, it has inherent defects of "intermittency and instability" - affected by the alternation of day and night and weather changes (cloudy, rainy, foggy and hazy), solar collectors can only generate heat during periods of sufficient sunlight. At night or in severe weather, they cannot meet the heating demand at all, which seriously limits their independent application scenarios.

[0003] To overcome the limitations of solar energy, the industry is gradually exploring a combined heating model of "solar energy + auxiliary heat source". Air source heat pumps, with their advantages of "not being limited by sunlight, high energy efficiency ratio and low operating cost", have become the core auxiliary heat source that is compatible with solar energy.

[0004] A solar energy and heat pump combined heating device, disclosed in Publication No. CN212692155U, includes: a water storage tank comprising a water tank coil, a first refrigerant inlet pipe and a first refrigerant outlet pipe, the first refrigerant inlet pipe and the first refrigerant outlet pipe being connected to both ends of the water tank coil; a first temperature sensor fixed to the water storage tank; a solar collector comprising multiple solar collector tubes connected to the water storage tank; both the first and second temperature sensors being electrically connected to the input terminal of a controller; and the output terminal of the controller being electrically connected to an air source heat pump. Its beneficial effects are: the air source heat pump and the water tank coil are connected via pipelines; when the air source heat pump is running, it heats the refrigerant in the water tank coil, which then heats the water in the water storage tank. The solar collector is connected to the water storage tank and can directly heat the water in the tank.

[0005] However, existing technologies have certain drawbacks: while air source heat pumps can supplement heat, they suffer from high energy consumption when operating alone. Existing solar-heat pump combined systems often lack efficient heat utilization designs; excess solar heat is easily lost, and the water tank dissipates heat quickly, causing the heat pump to frequently operate at full load to maintain water temperature. This results in high heating loads and high electricity consumption, making it difficult to balance clean energy utilization with energy-saving requirements.

[0006] In response, we propose a combined solar energy and heat pump heating device. Utility Model Content

[0007] The purpose of this invention is to provide a solar energy and heat pump combined heating device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a solar energy and heat pump combined heating device, including a water storage tank, a first temperature sensor, a second temperature sensor, an air source heat pump, and a controller. Several solar collector tubes are provided on both sides of the water storage tank, and a first refrigerant inlet / outlet pipe and a second refrigerant inlet / outlet pipe are respectively provided between the water storage tank and the air source heat pump. Water tanks are installed on both sides of the air source heat pump. A water pump is installed on the top of the water tank. The output end of the water pump is fixedly connected to a water pipe connected to the water storage tank. An integrated solar panel is located on the outer wall of the water storage tank, which is located inside several solar collector tubes. Several auxiliary heat pipes arranged in an L-shape are embedded on the surface of the integrated solar panel. The auxiliary heat pipes are connected to the bottom of the water tank. The cavity of the auxiliary heat pipe is filled with phase change material.

[0009] Preferably, both the first and second temperature sensors are electrically connected to the controller input terminal, and the controller output terminal is electrically connected to the air source heat pump.

[0010] Preferably, the air source heat pump is a variable frequency air source heat pump.

[0011] Preferably, several of the solar collector tubes are distributed at an angle on both sides of the water storage tank.

[0012] Preferably, the integrated light plate has several U-shaped light collection slots on its wall that correspond to the solar collector tubes.

[0013] Preferably, the phase change material is made of paraffin-expanded graphite composite material.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: the solar collector tubes, which are inclinedly distributed on both sides of the water tank, can be adapted to the solar altitude angle of the installation area, maximizing the reception of sunlight and directly heating the water in the tank; the U-shaped light-collecting groove of the integrated light plate can gather scattered and oblique light, further enhancing the light intensity on the surface of the solar collector tubes and improving the heat collection efficiency. Simultaneously, the paraffin-expanded graphite composite phase change material in the auxiliary heating pipe can store excess heat when sunlight is abundant, and release heat to insulate the water tank when sunlight weakens, extending the solar heating duration and reducing the frequency of heat pump start-ups due to insufficient solar energy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4This is a cross-sectional view of the auxiliary heat pipe of this utility model.

[0016] In the diagram: 1. Water storage tank; 110. First temperature sensor; 111. Second temperature sensor; 10. Controller; 11. Solar collector tube; 2. Air source heat pump; 21. First refrigerant inlet / outlet pipe; 22. Second refrigerant inlet / outlet pipe; 3. Water tank; 31. Water pump; 32. Water pipe; 33. Auxiliary heat pipe; 330. Phase change material; 4. Integrated light panel; 401. U-shaped light collection trough. Detailed Implementation

[0017] 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.

[0018] like Figures 1-4 As shown, this utility model provides the following technical solution: Example 1: A solar energy and heat pump combined heating device includes a water storage tank 1, a first temperature sensor 110, a second temperature sensor 111, an air source heat pump 2, and a controller 10. Several solar collector tubes 11 are provided on both sides of the water storage tank 1. A first refrigerant inlet / outlet pipe 21 and a second refrigerant inlet / outlet pipe 22 are respectively provided between the water storage tank 1 and the air source heat pump 2. The first temperature sensor 110 and the second temperature sensor 111 are electrically connected to the input terminal of the controller 10, and the output terminal of the controller 10 is electrically connected to the air source heat pump 2. The air source heat pump 2 is a variable frequency air source heat pump. The several solar collector tubes 11 are all distributed in an inclined manner on both sides of the water storage tank 1.

[0019] Among them, the sensor collects the water temperature of the water tank 1 and the temperature of the solar collector tube 11 in real time, and the controller 10 automatically determines whether to start the air source heat pump 2 based on the data, without the need for manual intervention. The air source heat pump 2 is a variable frequency type, which allows it to dynamically adjust its operating power according to the actual heating load. When the water temperature in the storage tank 1 is small compared with the target temperature, the heat pump operates at low power to reduce energy consumption; when the temperature difference is large or solar heating is insufficient, the heat pump automatically increases its power to quickly supplement the heat. The inclined distribution can reduce light reflection, improve solar energy absorption efficiency, and enhance the direct heating effect of solar energy on the solar collector tube 11.

[0020] In use, the device is installed in a well-lit area. The inclined distribution of the solar collector tubes 11 allows them to fully receive sunlight, directly heating the water in the storage tank 1 through heat conduction. A first temperature sensor 110 monitors the water temperature in the storage tank 1 in real time, while a second temperature sensor 111 monitors the temperature of the solar collector tubes 11, transmitting the data to the controller 10. When the temperature of the solar collector tubes 11 is high enough and the water temperature in the storage tank 1 meets the user's needs, the controller 10 shuts down the air source heat pump 2, relying solely on solar energy for heating. When insufficient solar energy causes the water temperature in the storage tank 1 to drop, the controller 10 activates the variable frequency air source heat pump 2, driving refrigerant circulation through the first and second refrigerant inlet / outlet pipes 21 and 22. The refrigerant, heated in the air source heat pump 2, enters the heat exchange structure within the storage tank 1 to replenish the water's heat. Furthermore, the variable frequency heat pump can dynamically adjust its power based on the water temperature difference, reducing energy consumption.

[0021] Example 2: The technical solution of this example, which differs from that of Example 1, includes: water tanks 3 are installed on both sides of the air source heat pump 2, a water pump 31 is installed on the top of the water tank 3, the output end of the water pump 31 is fixedly connected to a water pipe 32 connected to the water storage tank 1, the outer wall of the water storage tank 1 is located on an integrated light plate 4 at the inner end of several solar collector tubes 11, several auxiliary heat pipes 33 are embedded on the surface of the integrated light plate 4 in an L-shape, and the auxiliary heat pipes 33 are connected through to the bottom of the water tank 3, the tube wall cavity of the auxiliary heat pipes 33 is filled with phase change material 330, and several U-shaped light collection grooves 401 corresponding to the solar collector tubes 11 are opened on the wall of the integrated light plate 4, and the phase change material 330 is made of paraffin expanded graphite composite material.

[0022] The U-shaped structure can gather scattered and oblique light from the environment, and concentrate the dispersed light onto the surface of the solar collector tube 11 through reflection from the groove wall, thereby improving the local light intensity of the solar collector tube 11. The phase change material 330 is a paraffin-expanded graphite composite material. Taking advantage of the large latent heat of phase change and high heat storage density of paraffin, it can quickly absorb the heat transferred by the integrated light plate 4 and melt and store energy when the light is sufficient. When the light is weakened or at night, the phase change material 330 solidifies and releases heat, which is then used to replenish water and keep the water tank 3 warm through the auxiliary heating pipe 33.

[0023] In use, (first, water from storage tank 1 needs to flow into water tank 3 through water pipe 32 until several auxiliary heating pipes 33 are filled) while solar collector tubes 11 receive sunlight, the U-shaped light-collecting groove 401 of integrated light plate 4 can gather and scatter light, improve local light intensity, and assist solar collector tubes 11 in heating up. The heat absorbed by integrated light plate 4 is transferred to the embedded auxiliary heating pipes 33, where the paraffin expanded graphite composite phase change material 330 absorbs heat and melts to store heat. When the light intensity decreases, the phase change material 330 releases heat, continuously keeping the water in water tank 3 warm through auxiliary heating pipes 33. If the water temperature in storage tank 1 is insufficient, water pump 31 starts, transporting preheated water from water tank 3 to storage tank 1 through water pipe 32, reducing the temperature difference between storage tank 1 and the target water temperature; at the same time, controller 10 adjusts variable frequency air source heat pump 2 to supplement heat through refrigerant pipeline according to temperature sensor data, further reducing the heat pump heating load and achieving efficient and energy-saving heating.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar energy and heat pump combined heating device, comprising a water storage tank (1), a first temperature sensor (110), a second temperature sensor (111), an air source heat pump (2), and a controller (10), wherein a plurality of solar collector tubes (11) are provided on both sides of the water storage tank (1), and a first refrigerant inlet / outlet pipe (21) and a second refrigerant inlet / outlet pipe (22) are respectively provided between the water storage tank (1) and the air source heat pump (2); Its features are: Water tanks (3) are installed on both sides of the air source heat pump (2). A water pump (31) is installed at the top of the water tank (3). The output end of the water pump (31) is fixedly connected to a water pipe (32) connected to the water storage tank (1). The outer wall of the water storage tank (1) is located on an integrated light plate (4) at the inner end of several solar collector tubes (11). Several auxiliary heat pipes (33) arranged in an L-shape are embedded on the surface of the integrated light plate (4). The auxiliary heat pipes (33) are connected to the bottom of the water tank (3). The cavity of the auxiliary heat pipe (33) is filled with phase change material (330).

2. The solar energy and heat pump combined heating device according to claim 1, characterized in that: The first temperature sensor (110) and the second temperature sensor (111) are both electrically connected to the input terminal of the controller (10), and the output terminal of the controller (10) is electrically connected to the air source heat pump (2).

3. The solar energy and heat pump combined heating device according to claim 1, characterized in that: The air source heat pump (2) is a variable frequency air source heat pump.

4. The solar energy and heat pump combined heating device according to claim 1, characterized in that: Several of the solar collector tubes (11) are distributed at an angle on both sides of the water storage tank (1).

5. A solar energy and heat pump combined heating device according to claim 1, characterized in that: The integrated light plate (4) has several U-shaped light collection grooves (401) on its wall, which correspond to the solar heat collection tubes (11).

6. The solar energy and heat pump combined heating device according to claim 1, characterized in that: The phase change material (330) is made of paraffin expanded graphite composite material.

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