Air circulation heating system combined with solar heat storage cobblestone air source heat pump

Abstract

The invention discloses an air circulation heating system combined with a solar heat storage cobblestone air source heat pump. The air circulation heating system combined with the solar heat storage cobblestone air source heat pump comprises a solar heat collector, a heat storage device, an air heat circulation device and an air source heat pump host which are connected in sequence. The heat storage device comprises a heat preservation device and cobblestones used for storing heat. The solar heat collector is used for capturing solar radiation and converting the solar radiation into heat, the heat storage device is used for storing the heat collected by the solar heat collector, and the air heat circulation device is used for transferring the heat of the heat storage device and the heat in the environment into the air source heat pump main machine. And the air source heat pump host is used for heating. According to the air circulation heating system combined with the solar heat storage cobblestone air source heat pump, the night low-temperature operation efficiency of the air source heat pump is improved, and the power consumption of the air source heat pump is remarkably reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of heating, and in particular relates to an air circulation heating system combined with a solar heat storage pebble air source heat pump. Background Art

[0002] With the progress of society and the improvement of the quality of life, people's requirements for the comfort of living environment are increasing day by day, and the problem of building heating energy consumption has become an important issue that needs to be solved urgently. In China, building energy consumption accounts for about 30% of the total social terminal energy consumption, and the proportion of energy consumed by cooling and heating is as high as 40% to 50%. With the implementation of the coal-to-gas policy, the traditional coal-fired heating method has been gradually eliminated due to its serious pollution to the environment. China is actively promoting the application of new energy technologies to replace this increasingly abandoned traditional coal-fired heating method. At present, solar water heating systems and air source heat pump systems, as common forms of new energy heating devices, are being widely promoted and applied.

[0003] As one of the renewable energy sources strongly advocated by China, solar energy has many advantages, including its universality, safety, sustainability and huge potential. It is an inexhaustible energy source, and its significant economic benefits have made it widely used in production and daily life. As a relatively mature heat pump heating technology, air source heat pump uses the air in the environment as a low-temperature heat source, extracts low-grade heat energy from the air by consuming electricity, and converts it into high-grade heat energy for building use. This technology has the advantages of small footprint, energy saving and environmental protection, and high heating energy efficiency ratio. It has become an important part of China's building energy field and has been widely used in cold areas and hot summer and cold winter areas, showing great application potential and value.

[0004] However, there are some problems with current solar energy technology and air source heat pumps. Solar energy is subject to natural conditions such as day and night, seasons, geographical latitude and altitude, as well as random factors such as sunny, cloudy, cloudy and rainy weather, and is highly unstable. In particular, solar radiation fluctuations in northern regions are more serious, and the solar heat flux density is low. The operating efficiency of solar water heating systems is greatly reduced. A single solar water heating system is not enough to supply the heat required by buildings, especially in severe weather conditions. The impact is more serious, and electric heating systems are often required for auxiliary heating, which is not energy-efficient. Therefore, solar heating has a certain degree of intermittence and is unstable.

[0005] Theoretically, the air source heat pump hot water system can maintain stable and efficient operation all year round without being affected by environmental factors. However, during actual operation in winter nights, the outdoor ambient temperature is often below 0°C, which causes frost to form on the surface of the outdoor heat exchanger. Especially in humid areas in winter, the air is humid and frost is easy to form. Air source heat pumps face the problem of frequent frosting, which not only causes poor heat exchange effects, but also increases energy consumption due to defrosting, which seriously restricts the application and development of air source heat pumps.

[0006] At present, heating and hot water systems combining solar energy and air source heat pumps are gradually appearing on the market. For example, the invention patent application authorization announcement number CN101351373B discloses an invention name of a heating device combining solar energy and air source heat pump. The structure of the device is too complicated and the cost is high. In addition, the circulation pipelines of the two energy sources operate separately, and the organic combination of the two heating devices is not achieved.

[0007] In view of the above technical problems existing in the prior art, the present invention provides an air circulation heating system combined with a solar heat storage pebble air source heat pump. Summary of the invention

[0008] The present invention adopts the following technical solutions:

[0009] The present invention provides an air circulation heating system combined with a solar energy heat storage pebble air source heat pump, and the air circulation heating system combined with a solar energy heat storage pebble air source heat pump comprises:

[0010] Solar collector, heat storage device, air heat circulation device, and air source heat pump host connected in sequence;

[0011] The heat storage device comprises a heat preservation device and pebbles for heat storage;

[0012] The solar collector is used to capture solar radiation and convert it into heat, the heat storage device is used to store the heat collected by the solar collector, the air heat circulation device is used to transfer the heat of the heat storage device and the heat in the environment to the air source heat pump host, and the air source heat pump host is used for heating.

[0013] Furthermore, the solar thermal collector and the heat storage device are connected via a circulation pipe, the circulation pipe is used to transfer the heat collected by the solar thermal collector to the heat storage device, and the circulation pipe is provided with a heat-conducting medium, which is air or water.

[0014] Furthermore, the air circulation heating system combined with the solar heat storage pebble air source heat pump also includes a photovoltaic panel, which is used for photovoltaic power generation to provide electricity for the air source heat pump host.

[0015] Furthermore, a circulation control device is provided on the circulation pipeline, and the circulation control device controls the opening and closing of the heat transfer process through the photovoltaic panel or the pebble temperature sensor arranged in the heat storage device and the collector temperature sensor arranged in the solar collector.

[0016] Furthermore, the circulation control device is controlled by the photovoltaic panel. When the photovoltaic panel detects that the light intensity reaches a preset threshold, the photovoltaic panel runs and supplies power to the circulation control device to start the heat transfer process. When the photovoltaic panel detects that the light intensity does not reach the preset threshold, the photovoltaic panel shuts down and stops supplying power to the circulation control device to shut down the heat transfer process.

[0017] Furthermore, the circulation control device is controlled by the pebble temperature sensor and the collector temperature sensor, and the heat transfer process is started when the temperature value of the collector temperature sensor exceeds the temperature value of the pebble temperature sensor and reaches a preset threshold.

[0018] Furthermore, the air heat circulation device comprises:

[0019] A box body, the box body connecting the heat storage device and the air source heat pump host;

[0020] A heat storage air outlet valve and a heat storage air return valve are provided at the connection between the box body and the heat storage device, and the heat storage air outlet valve and the heat storage air return valve are used to exchange heat with the heat storage device;

[0021] An environmental exhaust valve and an environmental air inlet valve are arranged on the box body, and the environmental exhaust valve and the environmental air inlet valve are used to exchange heat with the outside world;

[0022] The heat storage air outlet valve, the heat storage air return valve, the environmental exhaust valve and the environmental air inlet valve are controlled by the pebble temperature sensor and an environmental temperature sensor arranged in the outside.

[0023] Furthermore, the heat storage air outlet valve, the heat storage air return valve, the environment air exhaust valve and the environment air inlet valve are controlled by a clock:

[0024] During the day, the environment exhaust valve and the environment air inlet valve are opened, and the heat storage air outlet valve and the heat storage air return valve are closed;

[0025] At night, the environmental exhaust valve and the environmental air inlet valve are closed, and the heat storage air outlet valve and the heat storage air return valve are opened.

[0026] Furthermore, the air source heat pump host includes: an evaporator and an evaporator fan arranged in the air heat cycle device; the air source heat pump host is connected to the evaporator.

[0027] Furthermore, the heat preservation device is a heat preservation tank or a heat storage pile provided with a heat preservation layer underground.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. The air circulation heating system of the present invention combined with the solar energy heat storage pebble air source heat pump stores heat through pebbles. Compared with traditional liquid heat storage materials such as water or oily substances, the shape is extremely stable, easy to store, and has no pollution.

[0030] 2. The air circulation heating system combined with the solar heat storage pebble air source heat pump described in the present invention uses air as the circulation medium, reduces the maintenance rate and maintenance cost, and avoids the antifreeze problem of pipes and water pumps faced by traditional water circulation.

[0031] 3. The air circulation heating system combined with the solar heat storage pebble air source heat pump described in the present invention combines the advantages of the air source heat pump and the solar collector, improves the low-temperature operation efficiency of the air source heat pump at night, and significantly reduces the power consumption of the air source heat pump.

[0032] 4. The air circulation heating system of the pebble air source heat pump combined with solar heat storage described in the present invention, when operating at night, the air source heat pump host absorbs heat from the heat storage module. The heat storage module is provided with a heat preservation device, and the temperature generally does not fall below 7°C. The air source heat pump host is not easy to frost during operation, thus saving defrosting energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the air circulation heating system combined with the solar heat storage pebble air source heat pump described in the present invention.

[0034] As shown in the figure: 1-solar collector, 2-circulation pipeline, 3-photovoltaic panel, 4-fan, 5-heat storage device, 6-air heat circulation device, 7-air source heat pump main unit. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] Example

[0037] like Figure 1 As shown, the air circulation heating system combined with the solar heat storage pebble air source heat pump includes: a solar collector 1, a circulation pipeline 2, a photovoltaic panel 3, a heat storage device 5, an air heat circulation device 6, and an air source heat pump host 7.

[0038] The solar thermal collector 1 is installed in an outdoor place with sufficient sunlight to capture solar radiation and convert it into heat. The heat storage device 5 connected to the solar thermal collector 1 is used to store the heat. The circulation pipe 2 connects the solar thermal collector 1 and the heat storage device 5 to ensure that the heat energy collected by the solar thermal collector 1 is effectively transferred to the heat storage device 5.

[0039] The air heat circulation device 6 and the air source heat pump host 7 are sequentially connected to the heat storage device 5, and are used to transfer the heat of the heat storage device 5 to the air source heat pump host 7. The air source heat pump host 7 extracts the heat in the heat storage device 5 or the heat in the air for indoor heating;

[0040] The photovoltaic panel 3 is connected to the air source heat pump host 7 , and the photovoltaic panel 3 is used for photovoltaic power generation to provide electrical energy to the air source heat pump host 7 .

[0041] In this embodiment, a plurality of solar thermal collectors 1 are placed on the top of a building, and a circulation pipe 2 connects these solar thermal collectors 1 and a heat storage device 5 to each other.

[0042] The circulation pipe 2 includes a heat transfer medium circulating in the circulation pipe 2 and a circulation control device for promoting the circulation of the heat transfer medium. The specific configuration of the circulation pipe 2 needs to be selected according to the environmental conditions. The material of the circulation pipe 2 is determined according to the maximum temperature that the solar collector 1 can reach. If the maximum temperature does not exceed 80°C, a PVC pipe is used; if it exceeds 80°C, a metal pipe is used. The heat transfer medium can be air or water. Water has a higher specific heat capacity and can carry more heat in a single cycle, but it is greatly affected by the environment, especially under low temperature conditions in winter. If it stops flowing, it is easy to freeze, thereby damaging the pipeline. In contrast, air circulation heat conduction does not need to consider antifreeze issues, and can save antifreeze energy consumption for pipelines and water pumps, avoid water leakage, corrosion and other problems, and is easier to maintain and construct, and has a longer service life.

[0043] The control logic of the circulation control device is based on temperature difference or light intensity control. When controlled by light intensity, a photosensitive sensor will be installed near the solar collector 1. When the photosensitive sensor detects that the light intensity reaches the preset threshold, it will start the circulation of the heat transfer medium in the circulation pipe 2; conversely, if the light intensity does not reach the preset threshold, the circulation of the heat transfer medium in the circulation pipe 2 will be stopped. When the control is based on temperature difference, a pebble temperature sensor will be configured in the heat storage device 5, and a collector temperature sensor will be configured in the solar collector 1. When the temperature of the solar collector 1 exceeds the temperature of the heat storage device 5, and the difference exceeds the preset threshold, the circulation of the heat transfer medium in the circulation pipe 2 will be started.

[0044] In this embodiment, the circulation pipe 2 adopts a PVC pipe, an insulation layer is provided on the outside of the PVC pipe, and the heat transfer medium adopts air. The air inlet of the circulation pipe 2 is connected to the upper part of the heat storage device 5, and the air outlet of the circulation pipe 2 is connected to the lower part of the heat storage device 5. A fan 4 is arranged near the air outlet of the circulation pipe 2 to promote the air circulation in the circulation pipe 2.

[0045] In this embodiment, the operation of the fan 4 is controlled by the light intensity. The photovoltaic panel 3 is directly connected to the fan 4, and the fan 4 is provided with energy by the photovoltaic panel 3. The working time of the fan 4 is roughly the same as the running time of the photovoltaic panel 3. When the photovoltaic panel 3 stops working due to insufficient light, the fan 4 will also stop running automatically. In this embodiment, the photovoltaic panel 3 can not only provide the required electricity for the air source heat pump host 7 during the day, but also adjust the operation of the fan 4, so that the solar collector 1 can collect heat during the day and provide corresponding heat to the heat storage device 5. At night, the fan 4 stops running to prevent the heat in the heat storage device 5 from flowing back to the solar collector 1.

[0046] In a specific embodiment, the operation of the fan 4 is controlled by temperature difference, and when the temperature of the solar thermal collector 1 is 5° C. higher than the temperature of the heat storage device 5 , the fan 4 is started.

[0047] The heat storage device 5 includes a heat preservation device, pebbles for heat storage, and a pebble temperature sensor. The heat preservation device is a heat preservation tank or a heat storage pile with an insulation layer located underground. In this embodiment, the heat storage device 5 is a heat preservation tank arranged in a building. Compared with other heat storage materials, the pebbles used in the present invention have significant cost advantages and are easy to obtain; compared with liquid heat storage media such as water or oil substances, pebbles are stable in shape, do not require the addition of chemicals, do not have shelf life issues, are easy to store, and are pollution-free, odorless, and non-corrosive, and are suitable for both burying underground and placing in containers; in addition, pebbles are convenient for medium circulation, and there are large gaps between particles, which support water circulation or air circulation, and have low circulation resistance. The heat storage temperature of pebbles can reach 1000°C, and the physical properties are stable. Its specific gravity is relatively large, at 2500kg / m 3 , so it takes up less space. The comparison of the heat storage performance of pebbles and water is shown in Table 1 below.

[0048] Table 1 Comparison of heat storage performance between pebbles and water

[0049]

[0050] The air heat circulation device 6 includes: a box, a heat storage air outlet valve, a heat storage air return valve, an environmental exhaust valve, and an environmental air inlet valve. The box is connected to the heat storage device 5 and the air source heat pump host 7. The heat storage air outlet valve and the heat storage air return valve are arranged at the connection between the box and the heat storage device 5. The heat storage air outlet valve and the heat storage air return valve are used to transfer the heat of the heat storage device 5 to the box. The environmental exhaust valve and the environmental air inlet valve are arranged on the box. The environmental exhaust valve and the environmental air inlet valve are responsible for connecting the outside world and the box to realize the exchange of heat between the box and the outside world.

[0051] In this embodiment, the heat storage return air valve is arranged at the upper part of the connection between the box body and the heat storage device 5, and the heat storage air outlet valve is arranged at the lower part of the connection between the box body and the heat storage device 5. The heat storage return air valve and the air inlet of the circulation pipe 2 are both located at the upper part of the heat storage device 5, and the heat storage air outlet valve and the air outlet of the circulation pipe 2 are both located at the lower part of the heat storage device 5. Such a layout ensures that when the solar collector 1 directly provides heat for the air source heat pump host 7, the air path circulation can run smoothly. As for the environmental exhaust valve and the environmental air inlet valve, since they are connected to the outside world, their specific configuration needs to be determined according to the external environmental conditions, and factors such as dust prevention and noise reduction need to be taken into account at the same time.

[0052] The control logic of the heat storage air outlet valve, the heat storage air return valve, the environment air exhaust valve, and the environment air inlet valve is time control and temperature control. The heat storage air outlet valve, the heat storage air return valve, the environment air exhaust valve, and the environment air inlet valve are controlled by a clock or pebble temperature sensor and an environment temperature sensor set in the outside.

[0053] When the heat storage air outlet valve, heat storage air return valve, environmental exhaust valve and environmental air inlet valve are controlled by the clock,

[0054] During the day, due to sufficient sunlight, the solar collector 1 and the photovoltaic panel 3 can operate efficiently. At this time, according to environmental conditions, the heat storage air outlet valve and the heat storage air return valve can be selectively opened, and the ambient exhaust valve and the ambient air inlet valve can be closed at the same time; or conversely, the heat storage air outlet valve and the heat storage air return valve can be closed, and the ambient exhaust valve and the ambient air inlet valve can be opened. When the heat storage air outlet valve and the heat storage air return valve are in the open state, and the ambient exhaust valve and the ambient air inlet valve are closed, the heat of the solar collector 1 will be directly supplied to the air source heat pump host 7, significantly reducing its power consumption. At the same time, the electricity generated by the photovoltaic panel 3 can be stored for use at night. In this process, the solar collector 1 provides heat to the heat storage device 5 and the air source heat pump host 7 at the same time. If the heat generated by the solar collector 1 is not enough to meet the needs of the whole day, the heat storage air outlet valve and the heat storage air return valve will be closed, and the ambient exhaust valve and the ambient air inlet valve will be opened at the same time, so that the heat generated by the solar collector 1 is stored in the heat storage device 5. Since the ambient temperature during the day is usually higher than that at night, the power consumption of the air source heat pump host 7 to absorb heat from the environment during the day is less than that of directly absorbing heat from the environment at night. Therefore, in this case, the solar collector 1 is responsible for storing heat for the heat storage device 5, while the air source heat pump host 7 absorbs heat from the environment to heat the building.

[0055] At night, due to insufficient light, the solar collector 1 and the photovoltaic panel 3 will stop operating. At this time, the fan 4 in the circulation pipe 2 will also stop running to prevent the heat in the heat storage device 5 from flowing back to the solar collector 1. The air heat circulation device 6 will open the heat storage outlet valve and the heat storage return valve, and close the ambient exhaust valve and the ambient air inlet valve. The heat stored in the pebbles in the heat storage device 5 is transported to the box through air circulation, and the air pump heat source absorbs heat from the box for heating. Since the heat in the box is significantly higher than the ambient temperature, the power consumption of the air pump heat source can be reduced. At the same time, the heat source temperature of the air source heat pump host 7 (i.e., the pebble-box temperature) at night is usually higher than 7°C, which makes it impossible for the air source heat pump host 7 to reach the defrosting condition, thereby saving about 6% of the defrosting energy consumption. This series of measures improves the stability of the equipment operation.

[0056] When the heat storage air outlet valve, heat storage air return valve, ambient air exhaust valve and ambient air inlet valve are controlled by temperature difference, the temperature of the heat storage device 5 and the ambient temperature are collected by a pebble temperature sensor and an ambient temperature sensor arranged outside. When the temperature of the heat storage device 5 is higher than the ambient temperature, the heat storage air outlet valve and the heat storage air return valve are opened, and the ambient air exhaust valve and the ambient air inlet valve are closed; conversely, when the temperature of the heat storage device 5 is lower than the ambient temperature, the heat storage air outlet valve and the heat storage air return valve are closed, and the ambient air exhaust valve and the ambient air inlet valve are opened.

[0057] The air source heat pump host 7 includes: an evaporator and an evaporator fan. The evaporator and the evaporator fan are arranged in the air heat circulation device 6. The air source heat pump host 7 is connected to the evaporator, and the evaporator fan is responsible for directing the hot air to the evaporator.

[0058] In this embodiment, the air source heat pump main unit 7 is connected to the water supply pipe and the return pipe, and a circulating water pump is provided on the return pipe. The air source heat pump main unit 7 is responsible for heating the water introduced by the water supply pipe and delivering hot water to the building through the return pipe. In a specific embodiment, multiple groups of water supply pipes and return pipes are provided, which are respectively used for heating or providing domestic hot water.

[0059] The operating cost of air source heat pump heating is directly related to the outdoor ambient temperature. In a specific embodiment, the experimental example and the comparative example are both equipped with a full-frequency 5.0HP air source heat pump unit, and no photovoltaic panel 3 is configured to prevent the power consumption statistics from being affected by different lighting conditions. The experimental example and the comparative example are operated in the same environment in Beijing in winter. The daytime load index of heating is 65w / ㎡; the nighttime load index is 100w / ㎡. The data of the experimental example and the comparative example are shown in Table 2 and Table 3 below:

[0060] Table 2 Comparison of traditional air source heat pumps

[0061]

[0062] Table 3 Experimental example of the system of the present invention

[0063]

[0064] From Table 2 and Table 3 above, it can be seen that the present invention focuses on improving the low-temperature operation efficiency of the air source heat pump host 7 at night, which is even higher than the daytime operation efficiency, and can save 30% of electricity consumption.

[0065] The present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, which are within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the appended claims.

Claims

1. An air circulation heating system combined with a solar thermal storage pebble air source heat pump, characterized in that: include: Solar collector, heat storage device, air heat circulation device, and air source heat pump host connected in sequence; The heat storage device comprises a heat preservation device and pebbles for heat storage; The solar collector is used to capture solar radiation and convert it into heat, the heat storage device is used to store the heat collected by the solar collector, the air heat circulation device is used to transfer the heat of the heat storage device and the heat in the environment to the air source heat pump host, and the air source heat pump host is used for heating.

2. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 1 is characterized in that: The solar thermal collector and the heat storage device are connected via a circulation pipeline, and the circulation pipeline is used to transfer the heat collected by the solar thermal collector to the heat storage device. The circulation pipeline is provided with a heat-conducting medium, and the heat-conducting medium is air or water.

3. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 1 is characterized in that: The air circulation heating system combined with the solar thermal storage pebble air source heat pump also includes a photovoltaic panel, which is used for photovoltaic power generation to provide electricity for the air source heat pump host.

4. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 2 is characterized in that: The circulation pipeline is provided with a circulation control device, and the circulation control device controls the opening and closing of the heat transfer process through the photovoltaic panel or the pebble temperature sensor arranged in the heat storage device and the collector temperature sensor arranged in the solar collector.

5. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 4 is characterized in that: The circulation control device is controlled by the photovoltaic panel. When the photovoltaic panel detects that the light intensity reaches a preset threshold, the photovoltaic panel runs and supplies power to the circulation control device to start the heat transfer process. When the photovoltaic panel detects that the light intensity does not reach the preset threshold, the photovoltaic panel shuts down and stops supplying power to the circulation control device to shut down the heat transfer process.

6. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 4 is characterized in that: The circulation control device is controlled by the pebble temperature sensor and the collector temperature sensor. When the temperature value of the collector temperature sensor exceeds the temperature value of the pebble temperature sensor and reaches a preset threshold, the heat transfer process is started.

7. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 1 is characterized in that: The air heat circulation device comprises: A box body, the box body connecting the heat storage device and the air source heat pump host; A heat storage air outlet valve and a heat storage air return valve are provided at the connection between the box body and the heat storage device, and the heat storage air outlet valve and the heat storage air return valve are used to exchange heat with the heat storage device; An environmental exhaust valve and an environmental air inlet valve are arranged on the box body, and the environmental exhaust valve and the environmental air inlet valve are used to exchange heat with the outside world; The heat storage air outlet valve, the heat storage air return valve, the environmental exhaust valve and the environmental air inlet valve are controlled by the pebble temperature sensor and an environmental temperature sensor arranged in the outside.

8. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 7 is characterized in that: The heat storage air outlet valve, the heat storage air return valve, the environment air exhaust valve and the environment air inlet valve are controlled by a clock: During the day, the environment exhaust valve and the environment air inlet valve are opened, and the heat storage air outlet valve and the heat storage air return valve are closed; At night, the environmental exhaust valve and the environmental air inlet valve are closed, and the heat storage air outlet valve and the heat storage air return valve are opened.

9. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 1 is characterized in that: The air source heat pump host comprises: an evaporator and an evaporator fan arranged in the air heat cycle device; the air source heat pump host is connected to the evaporator.

10. The air circulation heating system combined with the solar thermal storage pebble air source heat pump according to claim 1, characterized in that: The heat preservation device is a heat preservation tank or a heat storage pile provided with a heat preservation layer in the ground.

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