Solar and heat pump combined heating system applicable to alpine regions and its method

Abstract

The present invention discloses a solar energy and heat pump combined heating system and method applicable to alpine regions. The present invention combines a solar collector, a heat pump, and a heat storage device to achieve stable and continuous heating in alpine regions. When the sun is insufficient or the outside air temperature is too low, and when it is not working, it is flipped inside the device, thereby protecting the collector tube from being damaged by external impacts, greatly improving the service life of the device. The provided cleaning mechanism can clean and maintain the collector tube, thus avoiding the reduction of solar heat collection efficiency due to dust adhering to the collector tube, avoiding the reduction of the heating efficiency of the device, and ensuring the energy utilization rate. The present invention has beneficial effects such as stable heating connection, long service life of the device, fast heat storage speed of the device, high energy utilization rate, and cleaning and maintenance of the solar collector.

Description

Technical Field

[0001] The present invention belongs to the field of heating systems and relates to solar energy and heat pump technology, and specifically to a solar energy and heat pump combined heating system and method suitable for high-cold areas. Background Art

[0002] The demand for heating in winter in high-altitude cold regions is prominent. However, high-altitude cold regions are often too high or sparsely populated. Therefore, their energy is extremely scarce, and oil and gas transportation is extremely difficult and costly. Therefore, in order to solve the winter heating demand in high-altitude cold regions, it is necessary to develop an efficient, clean and stable heating system taking into account the energy, climate and terrain characteristics of high-altitude cold regions. Most of the existing clean heating systems use solar energy resources and solar radiation for heating. However, solar energy is discontinuous, unstable, and easily affected by climate and day and night environment, making it impossible to provide stable and continuous heating. An air source heat pump is a system that uses the external ambient temperature as a source to reversely convert the temperature in the air into the indoor heating temperature. However, the extremely low temperature in high-altitude and cold regions greatly affects its heating performance, making it impossible to provide heating effectively. Therefore, a heating system that combines solar energy and air source heat pumps has emerged. However, the existing solar energy and heat pump combined heating system has a heat storage device that only stores the water temperature of the solar energy flowing out, and the water temperature limit is 100°C, which causes a large amount of additional temperature inside the solar collector due to the water temperature limit. This extra temperature cannot be discharged through the water body, and then when the sun disappears, the temperature in the solar collector is wasted. The traditional solar collector is a fixed structure. Regardless of whether the solar collector is working or not, its collecting tubes are in the outside world and cannot be protected. Therefore, dust is very easy to appear, resulting in a significant decrease in the working efficiency of the collecting tubes, or the collecting tubes are hit and cause damage to the solar collector. Therefore, a solar energy and heat pump combined heating system that can recover the internal temperature of the solar collector and clean and maintain the solar collector and is suitable for high-altitude and cold areas is imminent. Summary of the invention

[0003] The object of the present invention is to provide a solar energy and heat pump combined heating system and method suitable for high-cold areas.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A solar energy and heat pump combined heating system applicable to alpine regions, comprising a solar collector, a hot water supply tank, a circulation pipeline, a heating terminal, a first condenser, a first heat pump compressor, a first dryer, a first evaporator, a first circulation water pump, a second dryer, a heat accumulator, a second condenser, a second heat pump compressor, a second evaporator, a pressure water tank, a second circulation water pump and a three-way valve. The three-way valve includes a first three-way valve, a second three-way valve, a third three-way valve and a fourth three-way valve. The solar collector is fixedly connected to the hot water supply tank in a through manner. The hot water supply tank is fixedly connected to the pressure water tank through the circulation pipeline in a through manner. The pressure water tank is connected to the second evaporator in a through manner. One end of the second evaporator is connected to the second heat pump compressor in a through manner. The other end of the second evaporator is connected to the second dryer in a through manner, and a one-way valve is provided between the second evaporator and the second dryer. The second heat pump compressor is connected to one end of the second condenser through the circulation pipeline in a through manner. The other end of the second condenser is connected to the second dryer through the circulation pipeline in a through manner. The second condenser is connected to the heat accumulator in a through manner. The water outlet end of the hot water supply tank is sequentially connected with the second circulation water pump and the first three-way valve through the circulation pipeline. The first three-way valve is fixedly connected to the third three-way valve and the water inlet end of the heating terminal through the circulation pipeline in a through manner. The water inlet end of the hot water supply tank is fixedly connected to the second three-way valve through the circulation pipeline. The second three-way valve is fixedly connected to the fourth three-way valve and the water outlet end of the heating terminal through the circulation pipeline in a through manner. The third three-way valve is fixedly connected to the water inlet end of the heat accumulator and the water outlet end of the first condenser through the circulation pipeline in a through manner. The fourth three-way valve is fixedly connected to the water inlet end of the first condenser and the water outlet end of the heat accumulator through the circulation pipeline in a through manner. One end of the first circulation water pump is connected to the circulation pipeline between the second three-way valve and the water outlet end of the heating terminal in a through manner. The other end of the first circulation water pump is connected to the circulation pipeline between the second three-way valve and the fourth three-way valve in a through manner. One end of the first condenser is fixedly connected to one end of the first dryer through the circulation pipeline. The other end of the first condenser is fixedly connected to one end of the first heat pump compressor through the circulation pipeline. The other end of the first heat pump compressor is connected to one end of the first evaporator through the circulation pipeline. The other end of the first evaporator is connected to the first dryer through the circulation pipeline;

[0006] The solar collector includes a through-water pipe, a heating water tank, a solar heat collection plate, a heat conduction pipe, a heat collection plate support frame, a rotating mechanism, a collector housing, a cleaning mechanism, and a heating water tank support frame. There are two heating water tank support frames and two heating water tanks. The two heating water tank support frames are symmetrically fixed on the left and right side walls of the collector housing. The two heating water tanks are slidably arranged on the two heating water tank support frames. The two heating water tanks are fixedly penetrated with through-water pipes. The two through-water pipes are fixedly connected to the hot water supply tank in a penetrating manner. There are two heat collection plate support frames in total. The two heat collection plate support frames are slidably arranged on the inner side wall of the collector housing. The two ends of the solar heat collection plate are fixedly provided with heat conduction pipes. The solar heat collection plate is rotationally fixed on the heat collection plate support frame through the heat conduction pipes. The heat conduction pipes are fixedly connected to the heating water tank in a penetrating manner. The rotating mechanism is embedded in the collector housing and is in transmission connection with the heat conduction pipe. The cleaning mechanism is slidably fixed on the inner side of the collector housing;

[0007] The pressure water tank includes a pressure valve, a pressure water tank one-way valve, a pressure water tank housing, and a heat conduction fin. The pressure water tank housing is fixed on the upper end face of the hot water supply tank. The pressure valve and the pressure water tank one-way valve are both fixed on the inner bottom surface of the pressure water tank housing. The lower ends of the pressure valve and the pressure water tank one-way valve penetrate the lower end face of the pressure water tank housing and the upper end face of the hot water supply tank and extend into the hot water supply tank in a penetrating manner. The heat conduction fin is arranged on the outer side wall of the pressure water tank housing, and one end of the heat conduction fin penetrates the outer side wall of the pressure water tank housing and extends into the inner side of the pressure water tank housing. The other end of the heat conduction fin is connected to the second evaporator in a penetrating manner.

[0008] Further, the heating water tank includes a water tank bearing, a limit card slot, a heating water tank body, and an inlet and outlet. The side wall of the heating water tank body is fixedly provided with a limit card slot. The front end face of the heating water tank body is provided with a water tank bearing. The rear end face of the heating water tank body is provided with an inlet and outlet. The inlet and outlet and the water tank bearing both penetrate the inner and outer side walls of the heating water tank body. The inlet and outlet is connected to the through-water pipe in a penetrating manner. The water tank bearing is fixedly connected to the heat conduction pipe.

[0009] Further, the solar heat collection plate includes a heat collection fixing plate and heat collection pipes. There are multiple heat collection pipes in total. The multiple heat collection pipes are evenly fixed on the heat collection fixing plate. The front and rear end faces of the multiple heat collection pipes are fixedly provided with heat conduction pipes. One end of the heat conduction pipe is arranged outside the heat collection pipe, and the other end is embedded inside the heat collection pipe.

[0010] Furthermore, the heat conduction tube includes a heat dissipation tube frame, a heat collection pipe frame, and a heat conduction connecting pipe. The heat collection pipe frame is embedded inside the heat collection pipe. The heat dissipation tube frame is arranged inside the heating water tank body. The heat collection pipe frame and the heat dissipation tube frame are fixedly connected by the heat conduction connecting pipe. An insulating layer is fixed on the outer side wall of the heat conduction connecting pipe. The heat conduction connecting pipe penetrates the side wall of the heating water tank body and is fixed inside the water tank bearing.

[0011] Furthermore, the heat collection plate support frame includes a telescopic rod and a heat collection plate support frame body. The telescopic rod is fixed on the lower end face inside the collector housing. The heat collection plate support frame body is slidably embedded on the inner side wall of the collector housing, and the lower end of the heat collection plate support frame body is fixedly connected to the upper end of the telescopic rod.

[0012] Furthermore, the rotation mechanism includes a first chain gear, a rotation drive motor, a second chain gear, a compression spring, a chain gear rotating shaft, a third chain gear, and a chain. The rotation drive motor is embedded on the inner side wall of the collector housing. The first chain gear is fixed on the output shaft of the rotation drive motor. The second chain gear is rotatably fixed on the chain gear rotating shaft. The chain gear rotating shaft is slidably arranged on the inner side wall of the collector housing. The compression spring is embedded on the inner side wall of the collector housing, and one end of the compression spring is fixedly connected to the collector housing, and the other end is fixedly connected to the chain gear rotating shaft. The third chain gear is fixed on the heat conduction connecting pipe. The first chain gear, the second chain gear, and the third chain gear are connected by the chain for transmission.

[0013] Furthermore, the cleaning mechanism includes a first pulley, a first threaded rod, a base, a second threaded rod, a cleaning motor, a second pulley, a belt, a chute, a brush, and a moving frame. Two chutes are provided on the upper end face of the base. The first threaded rod and the second threaded rod are respectively fixed in the two chutes. One end of the first threaded rod is rotatably fixed on the base, and the other end is fixed with the first pulley. One end of the second threaded rod is rotatably fixed on the base, and the other end is fixed with the second pulley. The cleaning motor is embedded in the base, and the second threaded rod is fixedly connected to the output shaft of the cleaning motor. The moving frame is slidably arranged on the upper end face of the base, and the lower side of the moving frame is slidably matched with the inner side of the chute. The lower side of the moving frame is in threaded cooperation with the first threaded rod and the second threaded rod. Brushes are evenly fixed on the upper end face of the moving frame. The first pulley and the second pulley are connected by the belt for transmission. The base is fixed on the inner bottom surface of the collector housing.

[0014] Furthermore, the working steps of the solar collector are as follows:

[0015] (1) When there is sunlight in the outside world, the solar collector conducts normal heat collection work;

[0016] (2) When there is no sunlight from outside, the telescopic rod extends, causing the main body of the heat collector support frame to move upward, and then driving the solar heat collector to move upward;

[0017] (3) Then the rotation drive motor starts, driving the first chain gear, the second chain gear, and the third chain gear to rotate. The rotation of the third chain gear causes the heat collection fixing plate to rotate, and then the heat collection pipeline rotates to the lower side, making the heat collection pipeline correspond to the upper end face of the base;

[0018] (4) At this time, the telescopic rod contracts, causing the main body of the heat collector support frame to move downward, and then driving the solar heat collector to move downward, making the heat collection pipeline contact with the brush. The cleaning motor starts, driving the second pulley and the first pulley to rotate, and then driving the first threaded rod and the second threaded rod to rotate, making the first threaded rod and the second threaded rod rotate relative to the moving frame, and then causing the moving frame to move along the chute on the upper end face of the base, and then cleaning the heat collection pipeline through the brush.

[0019] Furthermore, a solar energy and heat pump combined heating method applicable to alpine regions, the heating method includes a solar energy heating mode, a solar energy and heat pump hybrid heating mode, a heat pump heating mode, and a heat storage heater heating mode. The working modes of each mode are as follows:

[0020] 1) The specific working mode of the solar energy heating mode is as follows:

[0021] (1) Sunlight irradiates the solar energy collector, and the solar energy collector heats the water body in the hot water supply tank. Through the first three-way valve, the water outlet end of the hot water supply tank is connected to the water inlet end of the heating terminal and the water inlet end of the heat storage heater. Through the second three-way valve, the water outlet end of the heating terminal is connected to the water inlet end of the hot water supply tank and the water outlet end of the heat storage heater. The second circulation pump is started, and the warm water in the hot water supply tank enters the heating terminal and the heat storage heater respectively through the three-way valve. The warm water entering the heating terminal is used for heating through the heating terminal, and the cold water cooled after heating returns to the hot water supply tank through the water outlet end of the heating terminal. The warm water entering the heat storage heater stores the temperature in the heat storage heater, and the water body in the heat storage heater after storing the temperature returns to the hot water supply tank through the water outlet end of the heat storage heater;

[0022] (2) When the temperature in the hot water supply tank is too high, resulting in too high pressure in the hot water supply tank, and then the high-temperature and high-pressure gas in the hot water supply tank enters the pressure water tank housing through the pressure valve, causing the temperature in the pressure water tank housing to rise. The heat conduction sheet transfers the temperature in the pressure water tank housing to the second evaporator, causing the temperature of the gas in the second evaporator to rise;

[0023] (3) At this time, the second heat pump compressor starts. The high-temperature gas in the second evaporator enters the second heat pump compressor and becomes high-temperature and high-pressure gas. The second heat pump compressor transfers the high-temperature and high-pressure gas to the second condenser. At this time, the high-temperature and high-pressure gas transfers its temperature to the heat accumulator for storage in the second condenser, causing the high-temperature and high-pressure gas in the second condenser to become normal-temperature and high-pressure gas. The normal-temperature and high-pressure gas in the second condenser enters the second dryer;

[0024] (4) The second dryer dries the normal-temperature and high-pressure gas. The dried normal-temperature and high-pressure gas enters the second evaporator for pressure reduction. At this time, it absorbs the heat in the second evaporator, causing the normal-temperature and high-pressure gas to become high-temperature and normal-pressure gas. Repeat the steps until the excessive temperature in the hot water supply tank is stored in the heat accumulator;

[0025] 2) The specific working mode of the solar and heat pump hybrid heating method is as follows:

[0026] (1) The sun shines on the solar collector. The solar collector heats the water body in the hot water supply tank. The water outlet end of the hot water supply tank is connected to the third three-way valve and the water inlet end of the heating terminal through the first three-way valve. The water outlet end of the heating terminal is connected to the water inlet end of the hot water supply tank and the fourth three-way valve through the second three-way valve. The first three-way valve is connected to the water outlet end of the first condenser through the third three-way valve. The second three-way valve is connected to the water inlet end of the first condenser through the fourth three-way valve;

[0027] (2) Start the second circulation water pump. The warm water in the hot water supply tank enters the heating terminal through the three-way valve. At the same time, start the first heat pump compressor. The first heat pump compressor compresses the gas, generating high-temperature and high-pressure gas in the first heat pump compressor. The high-temperature and high-pressure gas enters the first condenser and heats the water body in the first condenser. The heated hot water in the first condenser reaches the first three-way valve through the third three-way valve and enters the heating terminal through the first three-way valve. The gas after heat conduction in the first condenser becomes high-pressure and normal-temperature gas. The high-pressure and normal-temperature gas in the first condenser enters the first dryer for drying. The dried high-pressure and normal-temperature gas enters the first evaporator for pressure relief. At this time, the high-pressure and normal-temperature gas becomes high-temperature and normal-pressure gas. The high-temperature and normal-pressure gas enters the first heat pump compressor again and becomes high-temperature and high-pressure gas again through the first heat pump compressor, continuing the cycle. The warm water entering the heating terminal supplies heat externally through the heating terminal. Part of the cold water after heating and cooling returns to the hot water supply tank through the second three-way valve at the water outlet end of the heating terminal, and the other part enters the fourth three-way valve through the second three-way valve and enters the first condenser through the fourth three-way valve;

[0028] 3) The specific working mode of the heat pump heating method is as follows:

[0029] (1) Connect the water inlet end of the first condenser to the second three-way valve and the water outlet end of the heat accumulator through the fourth three-way valve. Connect the water outlet end of the first condenser to the first three-way valve and the water inlet end of the heat accumulator through the third three-way valve. Connect the water outlet end of the heat supply terminal to the fourth three-way valve through the second three-way valve. Connect the water inlet end of the heat supply terminal to the third three-way valve through the first three-way valve;

[0030] (2) Start the first heat pump compressor. The first heat pump compressor compresses the gas, generating high-pressure and high-temperature gas inside the first heat pump compressor. The high-temperature and high-pressure gas enters the first condenser and heats the water body inside the first condenser. The heated hot water in the first condenser reaches the first three-way valve and the heat accumulator through the third three-way valve. The water body reaching the first three-way valve enters the heat supply terminal. The gas after heat conduction in the first condenser becomes high-pressure and normal-temperature gas. The high-pressure and normal-temperature gas in the first condenser enters the first dryer for drying. The dried high-pressure and normal-temperature gas enters the first evaporator for pressure relief. At this time, the high-pressure and normal-temperature gas becomes high-temperature and normal-pressure gas. The high-temperature and normal-pressure gas enters the first heat pump compressor again and becomes high-pressure and high-temperature gas again through the first heat pump compressor, continuing the cycle. The warm water entering the heat supply terminal supplies heat to the outside through the heat supply terminal. Part of the cold water after heat supply cooling enters the fourth three-way valve through the second three-way valve at the water outlet end of the heat supply terminal and enters the first condenser through the fourth three-way valve. The warm water entering the heat accumulator stores the temperature in the heat accumulator. The water body in the heat accumulator after storing the temperature reaches the fourth three-way valve from the water outlet end of the heat accumulator and enters the first condenser through the fourth three-way valve;

[0031] 4) The specific working mode of the heat supply of the heat accumulator is as follows:

[0032] (1) Connect the water inlet end of the heat accumulator to the second three-way valve through the fourth three-way valve. Connect the water outlet end of the heat accumulator to the first three-way valve through the third three-way valve;

[0033] (2) The warm water in the heat accumulator reaches the first three-way valve through the third three-way valve and enters the heat supply terminal through the first three-way valve;

[0034] (3) The cooling water in the heat supply terminal reaches the fourth three-way valve through the second three-way valve and enters the heat accumulator through the fourth three-way valve.

[0035] Advantages of the present invention: The present invention combines a solar collector, a heat pump, and a heat storage device, enabling stable and continuous heating in alpine regions. When sunlight is insufficient or the external air temperature is too low, combined heating is carried out, greatly improving the heating efficiency of the system. The present invention is provided with a second evaporator and a pressure water tank, enabling the present invention to export the excessive temperature in the hot water supply tank in the form of steam and store the exported temperature in the heat storage device through the heat pump mechanism, greatly reducing temperature waste, while improving temperature storage efficiency, thereby reducing energy consumption and improving heating efficiency. The provided solar collector exposes the heat collection tube to the outside during operation and flips it inside the device when not in operation, thereby protecting the heat collection tube from being damaged by external impacts and greatly increasing the service life of the device. The provided cleaning mechanism can clean and maintain the heat collection tube, thereby preventing dust from adhering to the heat collection tube and causing a decrease in solar heat collection efficiency, avoiding a decrease in the heating efficiency of the device, and ensuring energy utilization efficiency. The present invention has the beneficial effects of stable heating connection, long service life of the device, fast heat storage speed of the device, high energy utilization rate, and cleaning and maintenance of the solar collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 It is a system block diagram of the present invention;

[0038] Figure 2 It is a general structure schematic diagram of the solar collector of the present invention;

[0039] Figure 3 It is a structure schematic diagram of the pressure water tank of the present invention;

[0040] Figure 4 It is a structure schematic diagram of the heating water tank of the present invention;

[0041] Figure 5 It is a structure schematic diagram of the solar heat collection plate of the present invention;

[0042] Figure 6 It is a structure schematic diagram of the heat conduction tube of the present invention;

[0043] Figure 7 It is a structure schematic diagram of the heat collection plate support frame of the present invention;

[0044] Figure 8 It is a structure schematic diagram of the rotation mechanism of the present invention;

[0045] Figure 9 It is a structure schematic diagram of the cleaning mechanism of the present invention.

[0046] In the figure: solar collector 1, hot water supply tank 2, circulation pipeline 3, heat supply end 4, first condenser 5, first heat pump compressor 6, first dryer 7, first evaporator 8, first circulation water pump 9, second dryer 10, heat accumulator 11, second condenser 12, second heat pump compressor 13, second evaporator 14, pressure water tank 15, second circulation water pump 16, three-way valve 17, through water pipe 101, heating water tank 102, solar heat collection plate 103, heat conduction pipe 104, heat collection plate support frame 105, rotation mechanism 106, collector housing 107, cleaning mechanism 108, heating water tank support frame 109, pressure valve 151, pressure water tank one-way valve 152, pressure water tank housing 153, heat conduction fin 154, water tank bearing 1021, limit card slot 1022, heating water tank body 1023, water inlet and outlet 1024, heat collection fixing plate 1031, heat collection pipeline 1032, heat dissipation pipe rack 1041, heat collection pipeline rack 1042, heat conduction connecting pipe 1043, telescopic rod 1051, heat collection plate support frame body 1052, first chain gear 1061, rotation drive motor 1062, second chain gear 1063, contraction spring 1064, chain gear rotating shaft 1065, third chain gear 1066, chain 1067, first pulley 1081, first threaded rod 1082, base 1083, second threaded rod 1084, cleaning motor 1085, second pulley 1086, belt 1087, chute 1088, brush 1089, moving frame 10810. Detailed implementation manner

[0047] Refer to Figures 1-9As shown in the figure, a combined solar energy and heat pump heating system applicable to alpine regions includes a solar collector 1, a hot water supply tank 2, a circulating pipeline 3, a heating terminal 4, a first condenser 5, a first heat pump compressor 6, a first dryer 7, a first evaporator 8, a first circulating water pump 9, a second dryer 10, a heat accumulator 11, a second condenser 12, a second heat pump compressor 13, a second evaporator 14, a pressure water tank 15, a second circulating water pump 16, and a three-way valve 17. The three-way valve 17 includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve. The solar collector 1 is fixedly connected to the hot water supply tank 2 in a through manner. The hot water supply tank 2 is fixedly connected to the pressure water tank 15 in a through manner through the circulating pipeline 3. The pressure water tank 15 is connected to the second evaporator 14 in a through manner. One end of the second evaporator 14 is connected to the second heat pump compressor 13 in a through manner. The other end of the second evaporator 14 is connected to the second dryer 10 in a through manner. And a check valve is provided between the second evaporator 14 and the second dryer 10. The second heat pump compressor 13 is connected to one end of the second condenser 12 in a through manner through the circulating pipeline 3. The other end of the second condenser 12 is connected to the second dryer 10 in a through manner through the circulating pipeline 3. The second condenser 12 is connected to the heat accumulator 11 in a through manner. The water outlet end of the hot water supply tank 2 is sequentially connected with the second circulating water pump 16 and the first three-way valve through the circulating pipeline 3. The first three-way valve is fixedly connected to the third three-way valve and the water inlet end of the heating terminal 4 respectively in a through manner through the circulating pipeline 3. The water inlet end of the hot water supply tank 2 is connected to the second three-way valve in a through manner through the circulating pipeline 3. The second three-way valve is fixedly connected to the fourth three-way valve and the water outlet end of the heating terminal 4 respectively in a through manner through the circulating pipeline 3. The third three-way valve is fixedly connected to the water inlet end of the heat accumulator 11 and the water outlet end of the first condenser 5 respectively in a through manner through the circulating pipeline 3. The fourth three-way valve is fixedly connected to the water inlet end of the first condenser 5 and the water outlet end of the heat accumulator 11 respectively in a through manner through the circulating pipeline 3. One end of the first circulating water pump 9 is connected to the circulating pipeline 3 between the second three-way valve and the water outlet end of the heating terminal 4 in a through manner. The other end of the first circulating water pump 9 is connected to the circulating pipeline 3 between the second three-way valve and the fourth three-way valve in a through manner. One end of the first condenser 5 is fixedly connected to one end of the first dryer 7 in a through manner through the circulating pipeline 3. The other end of the first condenser 5 is connected to one end of the first heat pump compressor 6 in a through manner through the circulating pipeline 3. The other end of the first heat pump compressor 6 is connected to one end of the first evaporator 8 in a through manner through the circulating pipeline 3. The other end of the first evaporator 8 is connected to the first dryer 7 in a through manner through the circulating pipeline 3.

[0048] As Figure 2As shown in the figure, the solar collector 1 includes a through-water pipe 101, a heating water tank 102, a solar heat collection plate 103, a heat conduction pipe 104, a heat collection plate support frame 105, a rotating mechanism 106, a collector housing 107, a cleaning mechanism 108, and a heating water tank support frame 109. There are two heating water tank support frames 109 and two heating water tanks 102. The two heating water tank support frames 109 are symmetrically fixed on the left and right side walls of the collector housing 107. The two heating water tanks 102 are slidably arranged on the two heating water tank support frames 109. The two through-water pipes 101 are fixedly penetrated and fixed on the two heating water tanks 102. The two through-water pipes 101 are fixedly connected to the hot water supply tank 2 through penetration. There are two heat collection plate support frames 105 in total. The two heat collection plate support frames 105 are slidably arranged on the inner side wall of the collector housing 107. Heat conduction pipes 104 are fixedly arranged at both ends of the solar heat collection plate 103. The solar heat collection plate 103 is rotatably fixed on the heat collection plate support frame 105 through the heat conduction pipes 104. The heat conduction pipes 104 are fixedly connected to the heating water tank 102 through penetration. The rotating mechanism 106 is embedded in the collector housing 107, and the rotating mechanism 106 is in transmission connection with the heat conduction pipe 104. The cleaning mechanism 108 is slidably fixed on the inner side of the collector housing 107.

[0049] As Figure 3 shown, the pressure water tank 15 includes a pressure valve 151, a pressure water tank check valve 152, a pressure water tank housing 153, and a heat conduction fin 154. The pressure water tank housing 153 is fixed on the upper end face of the hot water supply tank 2. The pressure valve 151 and the pressure water tank check valve 152 are both fixed on the inner bottom surface of the pressure water tank housing 153. The lower ends of the pressure valve 151 and the pressure water tank check valve 152 penetrate the lower end face of the pressure water tank housing 153 and the upper end face of the hot water supply tank 2 and extend through to the inside of the hot water supply tank 2. The heat conduction fin 154 is arranged on the outer side wall of the pressure water tank housing 153. One end of the heat conduction fin 154 penetrates the outer side wall of the pressure water tank housing 153 and extends to the inside of the pressure water tank housing 153. The other end of the heat conduction fin 154 is connected to the second evaporator 14 through penetration.

[0050] As Figure 4 shown, the heating water tank 102 includes a water tank bearing 1021, a limit card slot 1022, a heating water tank body 1023, and an inlet and outlet 1024. The limit card slot 1022 is fixed on the side wall of the heating water tank body 1023. The water tank bearing 1021 is arranged on the front end face of the heating water tank body 1023. The inlet and outlet 1024 is arranged on the rear end face of the heating water tank body 1023. The inlet and outlet 1024 and the water tank bearing 1021 both penetrate the inner and outer side walls of the heating water tank body 1023. The inlet and outlet 1024 is connected to the through-water pipe 101 through penetration. The water tank bearing 1021 is fixedly connected to the heat conduction pipe 104.

[0051] As Figure 5As shown, the solar thermal collector panel 103 includes a heat collecting fixed plate 1031 and a heat collecting pipe 1032. There are a plurality of heat collecting pipes 1032, and the plurality of heat collecting pipes 1032 are evenly fixed on the heat collecting fixed plate 1031. The front and rear end surfaces of the plurality of heat collecting pipes 1032 are fixedly provided with a heat conducting pipe 104. One end of the heat conducting pipe 104 is arranged on the outside of the heat collecting pipe 1032, and the other end is embedded in the inside of the heat collecting pipe 1032.

[0052] like Figure 6 As shown, the heat-conducting pipe 104 includes a heat-dissipating pipe rack 1041, a heat-collecting pipe rack 1042 and a heat-conducting connecting pipe 1043. The heat-collecting pipe rack 1042 is embedded in the inner side of the heat-collecting pipe 1032, and the heat-dissipating pipe rack 1041 is arranged on the inner side of the heating water tank body 1023. The heat-collecting pipe rack 1042 and the heat-dissipating pipe rack 1041 are fixedly connected by the heat-conducting connecting pipe 1043. An insulating layer is fixed on the outer wall of the heat-conducting connecting pipe 1043. The heat-conducting connecting pipe 1043 penetrates the side wall of the heating water tank body 1023 and is fixed to the inner side of the water tank bearing 1021.

[0053] like Figure 7 As shown, the collector plate support frame 105 includes a telescopic rod 1051 and a collector plate support frame body 1052. The telescopic rod 1051 is fixed to the lower inner end surface of the collector shell 107, and the collector plate support frame body 1052 is slidably embedded in the inner wall of the collector shell 107, and the lower end of the collector plate support frame body 1052 is fixedly connected to the upper end of the telescopic rod 1051.

[0054] like Figure 8 As shown, the rotating mechanism 106 includes a first chain gear 1061, a rotating drive motor 1062, a second chain gear 1063, a contraction spring 1064, a chain gear shaft 1065, a third chain gear 1066 and a chain 1067. The rotating drive motor 1062 is embedded in the inner wall of the collector housing 107, the first chain gear 1061 is fixed to the output shaft of the rotating drive motor 1062, and the second chain gear 1063 is rotatably fixed to the chain gear shaft 1065. The chain gear shaft 1065 is slidably arranged on the inner wall of the collector shell 107, the contraction spring 1064 is embedded in the inner wall of the collector shell 107, and one end of the contraction spring 1064 is fixedly connected to the collector shell 107, and the other end is fixedly connected to the chain gear shaft 1065, the third chain gear 1066 is fixed on the heat-conducting connecting tube 1043, and the first chain gear 1061, the second chain gear 1063 and the third chain gear 1066 are connected through the chain 1067.

[0055] like Figure 9As shown, the cleaning mechanism 108 includes a first pulley 1081, a first threaded rod 1082, a base 1083, a second threaded rod 1084, a cleaning motor 1085, a second pulley 1086, a belt 1087, a slide 1088, a brush 1089 and a movable frame 10810. Two slides 1088 are provided on the upper end surface of the base 1083, and the first threaded rod 1082 and the second threaded rod 1084 are fixed in the two slides 1088 respectively. One end of the first threaded rod 1082 is rotatably fixed to the base 1083, and the other end is fixed with the first pulley 1081. One end of the second threaded rod 1084 is rotatably fixed to the base 1083, and the other end is fixed with the first pulley 1081. A second pulley 1086 is fixed, a cleaning motor 1085 is embedded in the base 1083, and the second threaded rod 1084 is fixedly connected to the output shaft of the cleaning motor 1085, a movable frame 10810 is slidably arranged on the upper end surface of the base 1083, and the lower side of the movable frame 10810 is slidably matched with the inner side of the slide groove 1088, the lower side of the movable frame 10810 is threadedly matched with the first threaded rod 1082 and the second threaded rod 1084, a brush 1089 is evenly fixed on the upper end surface of the movable frame 10810, the first pulley 1081 and the second pulley 1086 are connected by a belt 1087, and the base 1083 is fixed to the inner bottom surface of the collector housing 107.

[0056] The working steps of the solar collector 1 are as follows:

[0057] (1) When there is sunlight outside, the solar collector 1 collects heat;

[0058] (2) When there is no sunlight outside, the telescopic rod 1051 is extended, so that the collector support frame body 1052 moves upward, thereby driving the solar collector panel 103 to move upward;

[0059] (3) Then, the rotation drive motor 1062 is started, driving the first chain gear 1061, the second chain gear 1063 and the third chain gear 1066 to rotate. The rotation of the third chain gear 1066 causes the heat collecting fixing plate 1031 to rotate, thereby causing the heat collecting pipe 1032 to rotate to the lower side, so that the heat collecting pipe 1032 corresponds to the upper end surface of the base 1083;

[0060] (4) At this time, the telescopic rod 1051 contracts, causing the main body 1052 of the solar collector support frame to move downward, thereby driving the solar collector 103 to move downward, bringing the heat collection pipe 1032 into contact with the brush 1089. The cleaning motor 1085 is started, driving the second pulley 1086 and the first pulley 1081 to rotate, thereby driving the first threaded rod 1082 and the second threaded rod 1084 to rotate, causing the first threaded rod 1082 and the second threaded rod 1084 to rotate relative to the moving frame 10810, and then enabling the moving frame 10810 to move along the chute 1088 on the upper end surface of the base 1083, and then cleaning the heat collection pipe 1032 through the brush 1089.

[0061] The heating method includes a solar heating mode, a solar and heat pump hybrid heating mode, a heat pump heating mode, and a heat storage device heating mode. The working modes of each mode are as follows:

[0062] 1) The specific working mode of the solar heating mode is as follows:

[0063] (1) The sun shines on the solar collector 1. The solar collector 1 heats the water body in the hot water supply tank 2. Through the first three-way valve, the water outlet end of the hot water supply tank 2 is connected to the water inlet end of the heating terminal 4 and the water inlet end of the heat storage device 11. Through the second three-way valve, the water outlet end of the heating terminal 4 is connected to the water inlet end of the hot water supply tank 2 and the water outlet end of the heat storage device 11. The second circulation pump 16 is started. The warm water in the hot water supply tank 2 enters the heating terminal 4 and the heat storage device 11 respectively through the three-way valve. The warm water entering the heating terminal 4 is used for heating through the heating terminal 4. The cooled cold water returns to the hot water supply tank 2 through the water outlet end of the heating terminal 4. The warm water entering the heat storage device 11 stores the temperature in the heat storage device 11. The water body with the stored temperature in the heat storage device 11 returns to the hot water supply tank 2 from the water outlet end of the heat storage device 11;

[0064] (2) When the temperature in the hot water supply tank 2 is too high, resulting in too high pressure in the hot water supply tank 2, the high-temperature and high-pressure gas in the hot water supply tank 2 enters the pressure water tank housing 153 through the pressure valve 151, increasing the temperature in the pressure water tank housing 153. The heat conducting sheet 154 transfers the temperature in the pressure water tank housing 153 to the second evaporator 14, increasing the gas temperature in the second evaporator 14;

[0065] (3) At this time, the second heat pump compressor 13 is started. The high-temperature gas in the second evaporator 14 enters the second heat pump compressor 13 and becomes high-temperature and high-pressure gas. The second heat pump compressor 13 transfers the high-temperature and high-pressure gas to the second condenser 12. At this time, the high-temperature and high-pressure gas transfers the temperature to the heat storage device 11 for storage in the second condenser 12, causing the high-temperature and high-pressure gas in the second condenser 12 to become normal-temperature and high-pressure gas. The normal-temperature and high-pressure gas in the second condenser 12 enters the second dryer 10;

[0066] (4) The second dryer 10 dries the normal-temperature high-pressure gas. The dried normal-temperature high-pressure gas enters the second evaporator 14 to reduce the pressure. At this time, it absorbs the heat in the second evaporator 14, turning the normal-temperature high-pressure gas into a high-temperature normal-pressure gas. Repeat steps 3 to 4 to store the excessive temperature in the hot water supply tank 2 into the heat accumulator 11;

[0067] (2) The specific working mode of the solar energy and heat pump hybrid heating method is as follows:

[0068] (1) The sun shines on the solar collector 1. The solar collector 1 heats the water body in the hot water supply tank 2. Through the first three-way valve, the water outlet end of the hot water supply tank 2 is connected to the third three-way valve and the water inlet end of the heating terminal 4. Through the second three-way valve, the water outlet end of the heating terminal 4 is connected to the water inlet end of the hot water supply tank 2 and the fourth three-way valve. Through the third three-way valve, the first three-way valve is connected to the water outlet end of the first condenser 5. Through the fourth three-way valve, the second three-way valve is connected to the water inlet end of the first condenser 5;

[0069] (2) Start the second circulation water pump 16. The warm water in the hot water supply tank 2 enters the heating terminal 4 through the three-way valve. At the same time, start the first heat pump compressor 6. The first heat pump compressor 6 compresses the gas, generating high-pressure and high-temperature gas in the first heat pump compressor 6. The high-temperature and high-pressure gas enters the first condenser 5 to heat the water body in the first condenser 5. The heated hot water in the first condenser 5 reaches the first three-way valve through the third three-way valve and enters the heating terminal 4 through the first three-way valve. The gas after heat conduction in the first condenser 5 becomes high-pressure normal-temperature gas. The high-pressure normal-temperature gas in the first condenser 5 enters the first dryer 7 for drying. The dried high-pressure normal-temperature gas enters the first evaporator 8 to release pressure. At this time, the high-pressure normal-temperature gas becomes high-temperature normal-pressure gas. The high-temperature normal-pressure gas enters the first heat pump compressor 6 again and becomes high-pressure and high-temperature gas again through the first heat pump compressor 6, continuing to circulate. The warm water entering the heating terminal 4 supplies heat to the outside through the heating terminal 4. Part of the cold water after heating and cooling returns to the hot water supply tank 2 through the second three-way valve at the water outlet end of the heating terminal 4, and the other part enters the fourth three-way valve through the second three-way valve and enters the first condenser 5 through the fourth three-way valve;

[0070] (3) The specific working mode of the heat pump heating method is as follows:

[0071] (1) Through the fourth three-way valve, the water inlet end of the first condenser 5 is connected to the second three-way valve and the water outlet end of the heat accumulator 11. Through the third three-way valve, the water outlet end of the first condenser 5 is connected to the first three-way valve and the water inlet end of the heat accumulator 11. Through the second three-way valve, the water outlet end of the heating terminal 4 is connected to the fourth three-way valve. Through the first three-way valve, the water inlet end of the heating terminal 4 is connected to the third three-way valve;

[0072] (2) Start the first heat pump compressor 6. The first heat pump compressor 6 compresses the gas, generating high-pressure and high-temperature gas inside the first heat pump compressor 6. The high-temperature and high-pressure gas enters the first condenser 5, heating the water body inside the first condenser 5. The heated hot water in the first condenser 5 reaches the first three-way valve and the heat accumulator 11 through the third three-way valve. The water body reaching the first three-way valve enters the heat supply end 4. The gas after heat conduction in the first condenser 5 becomes high-pressure and normal-temperature gas. The high-pressure and normal-temperature gas in the first condenser 5 enters the first dryer 7 for drying. The dried high-pressure and normal-temperature gas enters the first evaporator 8 for pressure relief. At this time, the high-pressure and normal-temperature gas becomes high-temperature and normal-pressure gas. The high-temperature and normal-pressure gas enters the first heat pump compressor 6 again and becomes high-pressure and high-temperature gas again through the first heat pump compressor 6, continuing the cycle. The warm water entering the heat supply end 4 supplies heat to the outside through the heat supply end 4. Part of the cold water after heat supply and cooling enters the fourth three-way valve through the second three-way valve at the water outlet end of the heat supply end 4 and enters the first condenser 5 through the fourth three-way valve. The warm water entering the heat accumulator 11 stores the temperature in the heat accumulator 11. The water body with the stored temperature in the heat accumulator 11 reaches the fourth three-way valve from the water outlet end of the heat accumulator 11 and enters the first condenser 5 through the fourth three-way valve;

[0073] (4) The specific working mode of the heat supply by the heat accumulator is as follows:

[0074] (1) Connect the water inlet end of the heat accumulator 11 and the second three-way valve in a through manner through the fourth three-way valve, and connect the water outlet end of the heat accumulator 11 and the first three-way valve in a through manner through the third three-way valve;

[0075] (2) The warm water in the heat accumulator 11 reaches the first three-way valve through the third three-way valve and enters the heat supply end 4 through the first three-way valve;

[0076] (3) The cooling water in the heat supply end 4 reaches the fourth three-way valve through the second three-way valve and enters the heat accumulator 11 through the fourth three-way valve.

[0077] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the invention or exceed the scope defined by this claim book, it shall fall within the protection scope of the present invention.

Claims

1. A solar energy and heat pump combined heating system applicable to alpine regions, comprising a solar collector (1), a hot water supply tank (2), a circulating pipeline (3), a heating terminal (4), a first condenser (5), a first heat pump compressor (6), a first dryer (7), a first evaporator (8), a first circulating water pump (9), a second dryer (10), a heat accumulator (11), a second condenser (12), a second heat pump compressor (13), a second evaporator (14), a pressure water tank (15), a second circulating water pump (16) and a three-way valve (17), characterized in that, The three-way valve (17) includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve. The solar collector (1) is fixedly connected in communication with the hot water supply tank (2). The hot water supply tank (2) is fixedly connected in communication with the pressure water tank (15) through a circulation pipeline (3). The pressure water tank (15) is connected in communication with the second evaporator (14). One end of the second evaporator (14) is connected in communication with the second heat pump compressor (13). The other end of the second evaporator (14) is connected in communication with the second dryer (10), and a check valve is provided between the second evaporator (14) and the second dryer (10). The second heat pump compressor (13) is connected in communication with one end of the second condenser (12) through a circulation pipeline (3). The other end of the second condenser (12) is connected in communication with the second dryer (10) through a circulation pipeline (3). The second condenser (12) is connected in communication with the heat accumulator (11). The water outlet end of the hot water supply tank (2) is sequentially connected with a second circulation pump (16) and a first three-way valve through a circulation pipeline (3). The first three-way valve is fixedly connected in communication with the third three-way valve and the water inlet end of the heating terminal (4) through a circulation pipeline (3). The water inlet end of the hot water supply tank (2) is fixedly connected in communication with the second three-way valve through a circulation pipeline (3). The second three-way valve is fixedly connected in communication with the fourth three-way valve and the water outlet end of the heating terminal (4) through a circulation pipeline (3). The third three-way valve is fixedly connected in communication with the water inlet end of the heat accumulator (11) and the water outlet end of the first condenser (5) through a circulation pipeline (3). The fourth three-way valve is fixedly connected in communication with the water inlet end of the first condenser (5) and the water outlet end of the heat accumulator (11) through a circulation pipeline (3). One end of the first circulation pump (9) is connected in communication with the circulation pipeline (3) between the second three-way valve and the water outlet end of the heating terminal (4). The other end of the first circulation pump (9) is connected in communication with the circulation pipeline (3) between the second three-way valve and the fourth three-way valve. One end of the first condenser (5) is fixedly connected in communication with one end of the first dryer (7) through a circulation pipeline (3). The other end of the first condenser (5) is connected in communication with one end of the first heat pump compressor (6) through a circulation pipeline (3). The other end of the first heat pump compressor (6) is connected in communication with one end of the first evaporator (8) through a circulation pipeline (3). The other end of the first evaporator (8) is connected in communication with the first dryer (7) through a circulation pipeline (3); The solar collector (1) includes a through water pipe (101), a heating water tank (102), a solar heat collecting plate (103), a heat conducting pipe (104), a heat collecting plate support frame (105), a rotating mechanism (106), a collector housing (107), a cleaning mechanism (108), and a heating water tank support frame (109). There are two heating water tank support frames (109) and two heating water tanks (102). The two heating water tank support frames (109) are symmetrically fixed on the left and right side walls of the collector housing (107). The two heating water tanks (102) are slidably arranged on the two heating water tank support frames (109). The two heating water tanks (102) are fixedly connected with the through water pipe (101) in a penetrating manner. The two through water pipes (101) are fixedly connected with the hot water supply tank (2) in a penetrating manner. There are two heat collecting plate support frames (105) in total. The two heat collecting plate support frames (105) are slidably arranged on the inner side wall of the collector housing (107). The two ends of the solar heat collecting plate (103) are fixedly provided with heat conducting pipes (104). The solar heat collecting plate (103) is rotationally fixed on the heat collecting plate support frame (105) through the heat conducting pipes (104). The heat conducting pipes (104) are fixedly connected with the heating water tank (102) in a penetrating manner. The rotating mechanism (106) is embedded in the collector housing (107), and the rotating mechanism (106) is in transmission connection with the heat conducting pipe (104). The cleaning mechanism (108) is slidably fixed on the inner side of the collector housing (107); The pressure water tank (15) includes a pressure valve (151), a pressure water tank check valve (152), a pressure water tank housing (153), and a heat conducting sheet (154). The pressure water tank housing (153) is fixed on the upper end surface of the hot water supply tank (2). The pressure valve (151) and the pressure water tank check valve (152) are both fixed on the inner bottom surface of the pressure water tank housing (153), and the lower ends of the pressure valve (151) and the pressure water tank check valve (152) penetrate the lower end surface of the pressure water tank housing (153) and the upper end surface of the hot water supply tank (2) and extend into the hot water supply tank (2) in a penetrating manner. The heat conducting sheet (154) is arranged on the outer side wall of the pressure water tank housing (153), and one end of the heat conducting sheet (154) penetrates the outer side wall of the pressure water tank housing (153) and extends into the pressure water tank housing (153). The other end of the heat conducting sheet (154) is connected with the second evaporator (14) in a penetrating manner.

2. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 1, wherein The heating water tank (102) includes a water tank bearing (1021), a limit card slot (1022), a heating water tank body (1023), and an inlet / outlet (1024). The limit card slot (1022) is fixed on the side wall of the heating water tank body (1023). The water tank bearing (1021) is provided on the front end face of the heating water tank body (1023). The inlet / outlet (1024) is provided on the rear end face of the heating water tank body (1023). Both the inlet / outlet (1024) and the water tank bearing (1021) penetrate the inner and outer side walls of the heating water tank body (1023). The inlet / outlet (1024) is connected to the through pipe (101) in a through connection. The water tank bearing (1021) is fixedly connected to the heat conduction pipe (104).

3. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 2, characterized in that, The solar heat collecting panel (103) includes a heat collecting fixing plate (1031) and heat collecting pipes (1032). A plurality of the heat collecting pipes (1032) are provided. The plurality of heat collecting pipes (1032) are uniformly fixed on the heat collecting fixing plate (1031). Heat conduction pipes (104) are fixedly provided on the front and rear end faces of the plurality of heat collecting pipes (1032). One end of the heat conduction pipe (104) is arranged outside the heat collecting pipe (1032), and the other end is embedded inside the heat collecting pipe (1032).

4. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 3, characterized in that, The heat conduction pipe (104) includes a heat dissipation pipe frame (1041), a heat collecting pipe frame (1042), and a heat conduction connecting pipe (1043). The heat collecting pipe frame (1042) is embedded inside the heat collecting pipe (1032). The heat dissipation pipe frame (1041) is arranged inside the heating water tank body (1023). The heat collecting pipe frame (1042) and the heat dissipation pipe frame (1041) are fixedly connected by the heat conduction connecting pipe (1043). An insulating layer is fixed on the outer side wall of the heat conduction connecting pipe (1043). The heat conduction connecting pipe (1043) penetrates the side wall of the heating water tank body (1023) and is fixed inside the water tank bearing (1021).

5. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 4, characterized in that, The heat collecting panel support frame (105) includes a telescopic rod (1051) and a heat collecting panel support frame body (1052). The telescopic rod (1051) is fixed on the lower end face inside the collector housing (107). The heat collecting panel support frame body (1052) is slidably embedded on the inner side wall of the collector housing (107), and the lower end of the heat collecting panel support frame body (1052) is fixedly connected to the upper end of the telescopic rod (1051).

6. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 5, characterized in that, The rotating mechanism (106) comprises a first chain gear (1061), a rotating drive motor (1062), a second chain gear (1063), a contraction spring (1064), a chain gear rotating shaft (1065), a third chain gear (1066) and a chain (1067); the rotating drive motor (1062) is embedded in the inner wall of the collector housing (107); the first chain gear (1061) is fixed to the output shaft of the rotating drive motor (1062); the second chain gear (1063) is rotatably fixed to the chain gear rotating shaft (1065); The chain gear shaft (1065) is slidably arranged on the inner wall of the collector housing (107), the contraction spring (1064) is embedded in the inner wall of the collector housing (107), and one end of the contraction spring (1064) is fixedly connected to the collector housing (107), and the other end is fixedly connected to the chain gear shaft (1065), the third chain gear (1066) is fixed on the heat-conducting connecting tube (1043), and the first chain gear (1061), the second chain gear (1063) and the third chain gear (1066) are connected by a chain (1067).

7. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 6, characterized in that, The cleaning mechanism (108) comprises a first pulley (1081), a first threaded rod (1082), a base (1083), a second threaded rod (1084), a cleaning motor (1085), a second pulley (1086), a belt (1087), a slide groove (1088), a brush (1089) and a movable frame (10810). Two slide grooves (1088) are provided on the upper end surface of the base (1083). The first threaded rod (1082) and the second threaded rod (1084) are respectively fixed in the two slide grooves (1088). One end of the first threaded rod (1082) is rotatably fixed to the base (1083), and the other end is fixed with the first pulley (1081). One end of the second threaded rod (1084) is rotatably fixed to the base (1083), and the other end is fixed with the first pulley (1081). A second pulley (1086) is fixed, the cleaning motor (1085) is embedded in the base (1083), and the second threaded rod (1084) is fixedly connected to the output shaft of the cleaning motor (1085), the movable frame (10810) is slidably arranged on the upper end surface of the base (1083), and the lower side of the movable frame (10810) is slidably matched with the inner side of the slide groove (1088), the lower side of the movable frame (10810) is threadedly matched with the first threaded rod (1082) and the second threaded rod (1084), a brush (1089) is evenly fixed on the upper end surface of the movable frame (10810), the first pulley (1081) and the second pulley (1086) are connected by a belt (1087), and the base (1083) is fixed to the inner bottom surface of the collector housing (107).

8. The solar energy and heat pump combined heating system applicable to alpine regions according to claim 7, characterized in that, The working steps of the solar thermal collector (1) are specifically as follows: (1) When there is sunlight outside, the solar collector (1) collects heat; (2) When there is no sunlight from the outside, the telescopic rod (1051) extends, causing the collector plate support frame body (1052) to move upward, and then driving the solar collector plate (103) to move upward; (3) Then the rotation drive motor (1062) starts, driving the first chain gear (1061), the second chain gear (1063), and the third chain gear (1066) to rotate. The rotation of the third chain gear (1066) causes the collector fixing plate (1031) to rotate, and then the collector pipe (1032) rotates to the lower side, making the collector pipe (1032) correspond to the upper end surface of the base (1083); (4) At this time, the telescopic rod (1051) contracts, causing the collector plate support frame body (1052) to move downward, and then driving the solar collector plate (103) to move downward, making the collector pipe (1032) contact the brush (1089). The cleaning motor (1085) starts, driving the second pulley (1086) and the first pulley (1081) to rotate, and then driving the first threaded rod (1082) and the second threaded rod (1084) to rotate, making the first threaded rod (1082) and the second threaded rod (1084) rotate relative to the moving frame (10810). As a result, the moving frame (10810) moves along the sliding groove (1088) on the upper end surface of the base (1083), and then the collector pipe (1032) is cleaned by the brush (1089).

9. The heating method of the solar energy and heat pump combined heating system applicable to alpine regions according to claim 8, characterized in that, The heating method includes a solar heating method, a solar and heat pump hybrid heating method, a heat pump heating method, and a heat accumulator heating method. The specific working methods of each method are as follows: 1) The specific working method of the solar heating method is as follows: (1) Sunlight irradiates the solar collector (1). The solar collector (1) heats the water body in the hot water supply tank (2). Through the first three-way valve, the water outlet end of the hot water supply tank (2) is connected to the water inlet end of the heating terminal (4) and the water inlet end of the heat accumulator (11). Through the second three-way valve, the water outlet end of the heating terminal (4) is connected to the water inlet end of the hot water supply tank (2) and the water outlet end of the heat accumulator (11). The second circulation pump (16) is started. The warm water in the hot water supply tank (2) enters the heating terminal (4) and the heat accumulator (11) respectively through the three-way valve. The warm water entering the heating terminal (4) is used for heating through the heating terminal (4). The cold water after heating and cooling returns to the hot water supply tank (2) through the water outlet end of the heating terminal (4). The warm water entering the heat accumulator (11) stores the temperature in the heat accumulator (11). The water body with the stored temperature in the heat accumulator (11) returns to the hot water supply tank (2) through the water outlet end of the heat accumulator (11); (2) When the temperature in the hot water supply tank (2) is too high, resulting in too high pressure in the hot water supply tank (2), the high-temperature and high-pressure gas in the hot water supply tank (2) enters the pressure water tank housing (153) through the pressure valve (151), increasing the temperature in the pressure water tank housing (153). The heat conducting sheet (154) transfers the temperature in the pressure water tank housing (153) to the second evaporator (14), increasing the gas temperature in the second evaporator (14); (3) At this time, the second heat pump compressor (13) starts. The high-temperature gas in the second evaporator (14) enters the second heat pump compressor (13) and becomes high-temperature and high-pressure gas. The second heat pump compressor (13) transfers the high-temperature and high-pressure gas to the second condenser (12). At this time, the high-temperature and high-pressure gas transfers its temperature to the heat accumulator (11) for storage in the second condenser (12), causing the high-temperature and high-pressure gas in the second condenser (12) to become normal-temperature and high-pressure gas. The normal-temperature and high-pressure gas in the second condenser (12) enters the second dryer (10). (4) The second dryer (10) dries the normal-temperature and high-pressure gas. The dried normal-temperature and high-pressure gas enters the second evaporator (14) for pressure reduction. At this time, it absorbs the heat in the second evaporator (14), causing the normal-temperature and high-pressure gas to become high-temperature and normal-pressure gas. Repeat steps (3) to (4) to store the excessive temperature in the hot water supply tank (2) in the heat accumulator (11). 2) The specific working mode of the solar and heat pump hybrid heating method is as follows: (1) The sun shines on the solar collector (1). The solar collector (1) heats the water body in the hot water supply tank (2). Through the first three-way valve, the water outlet end of the hot water supply tank (2) is connected to the third three-way valve and the water inlet end of the heating terminal (4). Through the second three-way valve, the water outlet end of the heating terminal (4) is connected to the water inlet end of the hot water supply tank (2) and the fourth three-way valve. Through the third three-way valve, the first three-way valve is connected to the water outlet end of the first condenser (5). Through the fourth three-way valve, the second three-way valve is connected to the water inlet end of the first condenser (5). (2) Start the second circulation pump (16). The warm water in the hot water supply tank (2) enters the heating terminal (4) through the three-way valve. At the same time, start the first heat pump compressor (6). The first heat pump compressor (6) compresses the gas, causing high-pressure and high-temperature gas to be generated in the first heat pump compressor (6). The high-temperature and high-pressure gas enters the first condenser (5) and heats the water body in the first condenser (5). The heated hot water in the first condenser (5) reaches the first three-way valve through the third three-way valve and enters the heating terminal (4) through the first three-way valve. The gas after heat conduction in the first condenser (5) becomes high-pressure and normal-temperature gas. The high-pressure and normal-temperature gas in the first condenser (5) enters the first dryer (7) for drying. The dried high-pressure and normal-temperature gas enters the first evaporator (8) for pressure relief. At this time, the high-pressure and normal-temperature gas becomes high-temperature and normal-pressure gas. The high-temperature and normal-pressure gas enters the first heat pump compressor (6) again and becomes high-pressure and high-temperature gas again through the first heat pump compressor (6), continuing the cycle. The warm water entering the heating terminal (4) supplies heat externally through the heating terminal (4). Part of the cold water after heating and cooling returns to the hot water supply tank (2) through the second three-way valve at the water outlet end of the heating terminal (4), and the other part enters the fourth three-way valve through the second three-way valve and enters the first condenser (5) through the fourth three-way valve. 3) The specific working mode of the heat pump heating method is as follows: (1) Connect the water inlet end of the first condenser (5) to the second three-way valve and the water outlet end of the heat accumulator (11) through the fourth three-way valve. Connect the water outlet end of the first condenser (5) to the first three-way valve and the water inlet end of the heat accumulator (11) through the third three-way valve. Connect the water outlet end of the heat supply terminal (4) to the fourth three-way valve through the second three-way valve. Connect the water inlet end of the heat supply terminal (4) to the third three-way valve through the first three-way valve; (2) Start the first heat pump compressor (6). The first heat pump compressor (6) compresses the gas, generating high-pressure and high-temperature gas inside the first heat pump compressor (6). The high-temperature and high-pressure gas enters the first condenser (5) and heats the water body inside the first condenser (5). The heated hot water in the first condenser (5) reaches the first three-way valve and the heat accumulator (11) through the third three-way valve. The water body reaching the first three-way valve enters the heat supply terminal (4). The gas after heat conduction in the first condenser (5) becomes high-pressure and normal-temperature gas. The high-pressure and normal-temperature gas in the first condenser (5) enters the first dryer (7) for drying. The dried high-pressure and normal-temperature gas enters the first evaporator (8) for pressure relief. At this time, the high-pressure and normal-temperature gas becomes high-temperature and normal-pressure gas. The high-temperature and normal-pressure gas enters the first heat pump compressor (6) again and becomes high-pressure and high-temperature gas again through the first heat pump compressor (6), continuing the cycle. The warm water entering the heat supply terminal (4) supplies heat to the outside through the heat supply terminal (4). Part of the cold water after heat supply cooling enters the fourth three-way valve through the second three-way valve at the water outlet end of the heat supply terminal (4) and enters the first condenser (5) through the fourth three-way valve. The warm water entering the heat accumulator (11) stores the temperature in the heat accumulator (11). The water body after storing the temperature in the heat accumulator (11) reaches the fourth three-way valve from the water outlet end of the heat accumulator (11) and enters the first condenser (5) through the fourth three-way valve; (4) The specific working mode of the heat supply of the heat accumulator is as follows: (1) Connect the water inlet end of the heat accumulator (11) to the second three-way valve through the fourth three-way valve. Connect the water outlet end of the heat accumulator (11) to the first three-way valve through the third three-way valve; (2) The warm water in the heat accumulator (11) reaches the first three-way valve through the third three-way valve and enters the heat supply terminal (4) through the first three-way valve; (3) The cooling water in the heat supply terminal (4) reaches the fourth three-way valve through the second three-way valve and enters the heat accumulator (11) through the fourth three-way valve.

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