Coupling type solar heating device

Abstract

The utility model provides a coupling type solar heat supply device. The coupling type solar heat supply device comprises a cascade heat storage device, a solar heat collection device, a stove waste heat utilization device, a heat pump device, a heat supply terminal and a low-temperature terminal. The cascade heat storage device is provided with a heat supply port and a heat outlet, the heat supply port is connected with the solar heat collection device and the stove waste heat utilization device, the heat outlet is connected with the heat supply terminal, the heat supply terminal and the low-temperature terminal, and a high-temperature phase change heat storage assembly, a medium-temperature phase change heat storage assembly and a low-temperature phase change heat storage assembly which are sequentially connected in series are arranged in the cascade heat storage device. The stove waste heat utilization device is further connected with the heat supply terminal and the low-temperature terminal. The heat pump device is connected with the cascade heat storage device, the heat supply terminal, the heat supply terminal and the low-temperature terminal. Different heat storage and energy supply modes are achieved, and the requirements of terminal users for low-temperature water, domestic hot water and heat supply are met.

Description

Technical Field

[0001] This utility model belongs to the field of solar heating technology and relates to a coupled solar heating device. Background Technology

[0002] Solar energy, as a renewable and clean energy source, has the advantages of abundant resources, wide distribution, and easy access. It can be converted into electrical or thermal energy through photovoltaic panels or collectors and applied to daily heating. However, solar energy is affected by factors such as climate and region, and its seasonal distribution is uneven, making it difficult to continuously supply heat. There is a common problem of "insufficient heat in winter and excessive heat in summer." Therefore, it usually needs to be used in conjunction with other heat sources to stably output heat energy.

[0003] CN216346526U discloses a heating system that couples geothermal and solar energy, including a solar collector, a first separate heat pipe, a second separate heat pipe, a heat storage tank, a first heat exchange pipe, and a geothermal energy system. The heat user is equipped with the heat storage tank and the first heat exchange pipe. The hot end of the first heat exchange pipe is connected to the heat storage tank, and the cold end of the first heat exchange pipe is located inside the heat user's home. A circulation pump is installed on the first heat exchange pipe. The hot end of the first separate heat pipe is connected to the solar collector, and the cold end of the first separate heat pipe is connected to the heat storage tank. The hot end of the second separate heat pipe is connected to the geothermal energy system, and the cold end of the second separate heat pipe is connected to the heat storage tank. This system can efficiently and energy-savingly extract and transmit geothermal and solar energy, preventing the problem of insufficient heat from renewable energy sources failing to meet the heat user's needs.

[0004] CN207455686U discloses an air-source heat pump coupled with solar energy for waterless heating, cooling and hot water supply, including: a solar collector, an evaporator, a compressor, a hot water storage tank, a second water tank, buried coils, water-using equipment, a first heat exchanger and a second heat exchanger. It utilizes air and solar energy as dual heat sources and adopts an air-source heat pump coupled with solar energy for waterless heating, cooling and hot water supply, which can solve the problems of evaporator frosting and solar collector tube bursting in winter, while maximizing system performance.

[0005] However, traditional solar-coupled heating systems have some drawbacks, such as high energy consumption, high investment costs, and a gradual decrease in heat storage efficiency over time, leading to heat loss. Furthermore, their functionality is relatively limited, and they cannot adjust the heating mode according to different user needs. Therefore, it is necessary to find a lower-cost solar coupling method to further improve the system's operational energy efficiency. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a coupled solar heating device. Through the coupled design of solar heat collection, stove waste heat, heat pump heating and phase change heat storage, different heat storage and energy supply modes are realized to meet the end users' needs for low-temperature water, domestic hot water and heating.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model provides a coupled solar heating device, which includes a cascaded heat storage device, a solar collector, a stove waste heat utilization device, a heat pump device, a heating terminal, a warming terminal, and a low-temperature terminal. The cascaded heat storage device is provided with a heating port and a heating outlet. The heating port is connected to the solar collector and the stove waste heat utilization device, respectively. The heating outlet is connected to the heating terminal, the warming terminal, and the low-temperature terminal, respectively. The cascaded heat storage device is provided with a high-temperature phase change heat storage component, a medium-temperature phase change heat storage component, and a low-temperature phase change heat storage component connected in series. The outlet end of the solar collector is provided with a first temperature detection component. The stove waste heat utilization device is also connected to the heating terminal and the low-temperature terminal, and is provided with a second temperature detection component. The heat pump device is connected to the cascaded heat storage device, the heating terminal, the warming terminal, and the low-temperature terminal, and is provided with a third temperature detection component.

[0009] This utility model makes full use of solar energy collection and recovers waste heat from stoves. It uses a stepped heat storage device to perform stepped phase change heat storage of solar energy and waste heat from stoves, realizing the storage of heat energy at different temperatures, thereby meeting the different heating needs of end users. At the same time, it is coupled with a heat pump design to provide users with stable and reliable heat energy, and has high adaptability and practicality.

[0010] As a preferred embodiment of this utility model, the heat outlet is connected to a first output pipe, the outlet of the first output pipe is divided into three paths: one path is connected to the heating terminal through the first pipe, one path is connected to the warming terminal through the second pipe, and the other path is connected to the low-temperature terminal through the third pipe. The warming terminal is also connected to the cascade heat storage device through a return pipe. A first drive pump is installed on the first pipe, a second drive pump is installed on the second pipe, and a third drive pump is installed on the third pipe.

[0011] As a preferred embodiment of this utility model, the heating port is connected to the inlet ends of the high-temperature phase change heat storage component, the medium-temperature phase change heat storage component and the low-temperature phase change heat storage component respectively through three conveying branch pipes.

[0012] As a preferred embodiment of this utility model, the high-temperature phase change heat storage component, the medium-temperature phase change heat storage component, and the low-temperature phase change heat storage component each independently include a heat storage jacket, and a phase change energy storage layer is disposed inside the heat storage jacket; the phase change temperature of the phase change energy storage layer in the high-temperature phase change heat storage component, the phase change temperature of the phase change energy storage layer in the medium-temperature phase change heat storage component, and the phase change temperature of the phase change energy storage layer in the low-temperature phase change heat storage component are different from each other.

[0013] This invention utilizes cascade phase change thermal storage technology to supply the heat required for daily life within different temperature ranges, maintaining a constant heat output, reducing energy loss during the thermal storage process, and improving energy utilization efficiency.

[0014] As a preferred embodiment of this utility model, the solar thermal collector includes a solar collector and a first circulating pump. The solar collector is circulatedly connected to the cascade thermal storage device through a first heating pipeline, and the first circulating pump is installed on the first heating pipeline.

[0015] This utility model makes full use of clean solar energy for heat collection, and has high environmental and economic benefits.

[0016] As a preferred embodiment of this utility model, the first heating network is also connected to an external water supply branch pipe, which is connected to the low-temperature terminal and used to supply water to the solar collector.

[0017] This invention utilizes low-temperature water from a low-temperature terminal to replenish the solar collector, which helps reduce heat loss and ensures stable operation of the solar collector.

[0018] As a preferred embodiment of this utility model, the stove waste heat utilization device includes a stove assembly and a waste heat coil that are fixedly connected. The stove assembly is used to heat the waste heat coil. The inlet end of the waste heat coil is connected to the low-temperature terminal. The outlet end of the waste heat coil is circulated and connected to the cascade heat storage device through a second heating network. A second circulation pump is provided on the second heating network. The waste heat coil is also connected to the inlet end of the heating terminal through an auxiliary pipe. A second temperature detection component is provided at the outlet end of the waste heat coil.

[0019] As a preferred embodiment of this utility model, the outer peripheral wall of the waste heat coil is provided with a heat insulation layer.

[0020] This utility model recovers waste heat from stoves and cooktops for phase change heat storage, and applies it to the heat supply of end users. When solar thermal collection cannot meet the heat demand, it can output heat energy to end users in a safe, reliable, energy-saving and environmentally friendly manner.

[0021] As a preferred embodiment of this utility model, the heat pump device includes a heat source pump and a heat exchange component. The heat exchange component is provided with a first heat exchange tube and a second heat exchange tube. The first heat exchange tube is circulatedly connected to the heat source pump, and a heat exchange medium flows through the first heat exchange tube. The inlet and outlet of the second heat exchange tube are respectively connected to the low-temperature terminal and the heating terminal. The heat source pump is circulatedly connected to the cascade heat storage device through a third heating pipeline network. The heat source pump is also circulatedly connected to the heating terminal through a second output pipeline. The outlet end of the heat source pump is provided with the third temperature detection component.

[0022] When solar thermal collection and waste heat from stoves cannot meet user requirements, this utility model utilizes an auxiliary heat pump to provide heat energy to end users, ensuring stable system operation.

[0023] As a preferred embodiment of this invention, the low-temperature terminal includes a low-temperature water tank.

[0024] The heating terminal includes a faucet or a shower head.

[0025] The heating terminals include underfloor heating or radiators.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This utility model provides a coupled solar heating device that uses a cascaded phase change heat storage mechanism to achieve direct solar heating, direct heating from waste heat from stoves, direct heating from heat pumps, or combined heating based on different temperature distributions. This ensures the provision of efficient and stable heat energy, meets users' needs for low-temperature water, domestic hot water, and heating, and improves heat utilization. Attached Figure Description

[0028] Figure 1 A schematic diagram of the coupled solar heating device provided by this utility model.

[0029] Figure 2 A schematic diagram of the solar thermal collector device provided by this utility model for independent heating.

[0030] Figure 3 A schematic diagram of the stove waste heat utilization device provided by this utility model for separate heating.

[0031] Figure 4 A schematic diagram of the heat pump device provided by this utility model for independent heating.

[0032] Figure 5 A schematic diagram illustrating the combined use of a solar thermal collector and a heat pump device for heating, as provided by this utility model.

[0033] Figure 6This is a schematic diagram illustrating the combined use of a stove waste heat utilization device and a heat pump device for heating, as provided by this utility model.

[0034] 10-Cascaded heat storage device; 11-First output pipe; 12-First pipe; 13-Second pipe; 14-Third pipe; 15-Return pipe; 16-First drive pump; 17-Second drive pump; 18-Third drive pump; 19-Transport branch pipe; 101-High temperature phase change heat storage component; 102-Medium temperature phase change heat storage component; 103-Low temperature phase change heat storage component; 20-Solar collector; 201-First temperature detection component; 202-Solar collector; 203-First circulation pump; 204-Water supply branch pipe; 30-Waste heat utilization device; 301-Second temperature detection component; 302-Waste heat assembly; 303-Waste heat coil; 304-Second heating network; 305-The 40-Second circulation pump; 40-Heat pump unit; 401-Third temperature detection component; 402-Heat source pump; 403-Heat exchange component; 405-First heat exchange tube; 406-Second heat exchange tube; 407-Third heating network; 50-Heating terminal; 60-Heating terminal; 70-Low temperature terminal; 701-Fourth drive pump; k1-Fifth control valve; k2-Fourth control valve; k3-Third control valve; k4-Second control valve; k5-First control valve; k6-Tenth control valve; k7-Eleventh control valve; k8-Twelfth control valve; k9-Ninth control valve; k10-Eighth control valve; k11-Sixth control valve; k12-Seventh control valve; p1-First regulating valve; p2-Second regulating valve. Detailed Implementation

[0035] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] In one specific embodiment, the present invention provides a coupled solar heating device, such as... Figure 1 As shown, the system includes a cascaded heat storage device 10, a solar collector 20, a stove waste heat utilization device 30, a heat pump device 40, a heating terminal 50, a warming terminal 60, and a low-temperature terminal 70. The cascaded heat storage device 10 is equipped with a heating inlet and a heating outlet. The heating inlet is connected to the solar collector 20 and the stove waste heat utilization device 30, respectively, while the heating outlet is connected to the heating terminal 50, the warming terminal 60, and the low-temperature terminal 70, respectively. The heat from the solar collector 20 and the stove waste heat utilization device 30 is transferred to the cascaded heat storage device 10 for storage at different temperatures, and then the heat is input to the terminals with different needs through the cascaded heat storage device 10. The cascaded heat storage device 10 contains a high-temperature phase change heat storage component 101, a medium-temperature phase change heat storage component 102, and a low-temperature phase change heat storage component 103 connected in series. The solar collector 20 is equipped with a first temperature detection component 201 at its outlet end to measure the temperature of the heat output by the solar collector 20. The stove waste heat utilization device 30 is also connected to the heating terminal 50 and the low-temperature terminal 70, respectively. The stove waste heat utilization device 30 is equipped with a second temperature detection component 301 to measure the temperature at its outlet end. The heat pump device 40 is connected to the cascade heat storage device 10, the heating terminal 50, the heating terminal 60, and the low-temperature terminal 70, respectively. The heat pump device 40 is equipped with a third temperature detection component 401 to measure the temperature at its outlet end. The solar collector 20, the stove waste heat utilization device 30, and the heat pump device 40 can provide energy individually or in combination.

[0039] In some embodiments, the cryogenic terminal 70 includes a cryogenic water tank.

[0040] The heating terminal 50 includes a faucet or shower head.

[0041] The heating terminal 60 includes underfloor heating or radiators.

[0042] In some embodiments, the heat outlet is connected to a first output pipe 11. The outlet of the first output pipe 11 is divided into three paths: one path connects to the heating terminal 50 via a first pipe 12; another path connects to the heating terminal 60 via a second pipe 13; and the third path connects to the low-temperature terminal 70 via a third pipe 14. The heating terminal 60 is also connected to the cascade heat storage device 10 via a return pipe 15. A first drive pump 16 is installed on the first pipe 12, a second drive pump 17 is installed on the second pipe 13, and a third drive pump 18 is installed on the third pipe 14. Specifically, a first control valve k5 is also installed on the first pipe 12 for switching the connection between the cascade heat storage device 10 and the heating terminal 50. A second control valve k4 is installed on the second pipe 13, and a third control valve k3 is installed on the return pipe 15 for switching the connection between the cascade heat storage device 10 and the heating terminal 60. A fourth control valve k2 is installed on the third pipe 14 for switching the connection between the cascade heat storage device 10 and the low-temperature terminal 70. The heating port is connected to the inlet ends of the high-temperature phase change heat storage component 101, the medium-temperature phase change heat storage component 102, and the low-temperature phase change heat storage component 103 via three delivery branch pipes 19. Specifically, each of the high-temperature phase change heat storage component 101, the medium-temperature phase change heat storage component 102, and the low-temperature phase change heat storage component 103 independently includes a heat storage jacket, and a phase change energy storage layer is provided inside the heat storage jacket for filling with a phase change material well known to those skilled in the art. The phase change temperature of the phase change energy storage layer in the high-temperature phase change heat storage component 101, the medium-temperature phase change heat storage component 102, and the low-temperature phase change heat storage component 103 are different from each other. Specifically, the phase change temperature relationship of the phase change material in each heat storage component is: phase change material in high-temperature phase change heat storage component 101 > phase change material in medium-temperature phase change heat storage component 102 > phase change material in low-temperature phase change heat storage component 103. During use, the temperature of the heat at the outlet of the solar collector 20 and / or the waste heat utilization device 30 is measured. When this temperature is higher than that of the phase change material in any phase change heat storage component, the heat is sent to the corresponding phase change heat storage component through the corresponding transmission branch pipe 19 for heat storage. Heat is transferred from the high-temperature phase change heat storage component 101 to the medium-temperature phase change heat storage component 102. The phase change material in the medium-temperature phase change heat storage component 102 heats up and undergoes a phase change. After reaching the phase change temperature, heat is transferred from the medium-temperature phase change heat storage component 102 to the low-temperature phase change heat storage component 103, causing the low-temperature phase change material in the low-temperature phase change heat storage component 103 to gradually heat up and undergo a phase change. When the input heat temperature is low, and the high-temperature phase change material in the high-temperature phase change heat storage component 101 has not fully undergone a phase change, less heat is transferred to the medium-temperature phase change heat storage component 102, ensuring sufficient heat storage for the high-temperature phase change material to undergo a phase change.When the input heat temperature is moderate, the phase change material in the high-temperature phase change heat storage component 101 undergoes a full phase change, and excess solar energy or waste heat from the stove can heat the phase change material in the medium-temperature phase change heat storage component 102. When the phase change material in the medium-temperature phase change heat storage component 102 has not fully undergone a phase change, less heat is transferred to the low-temperature phase change heat storage component 103, ensuring the amount of heat stored for the phase change material in the medium-temperature phase change heat storage component 102 to undergo a phase change. The cascade heat storage device 10 also necessarily includes the necessary pipelines, conventional valves, and general-purpose pumps for achieving complete process operation. Those skilled in the art can add layouts based on the process flow and equipment structure selection, and this utility model does not make any special requirements or specific limitations in this regard.

[0043] In some embodiments, the solar thermal collector 20 includes a solar collector 202 and a first circulating pump 203. The solar collector 202 is circulatedly connected to the cascade thermal storage device 10 through a first heating pipeline, and the first circulating pump 203 is installed on the first heating pipeline. A fifth control valve k1, necessary for ensuring process integrity, is also installed on the first heating pipeline, capable of switching the connection between the solar collector 202 and the cascade thermal storage device 10.

[0044] Furthermore, the first heating network is also connected to an external water supply branch pipe 204, which is connected to the low-temperature terminal 70. The water supply branch pipe 204 is equipped with a sixth control valve k11, which is necessary to achieve process integrity, for switching the solar collector 202 and the low-temperature terminal 70, and for supplying water to the solar collector 202.

[0045] In some embodiments, the stove waste heat utilization device 30 includes a stove assembly 302 and a waste heat coil 303 fixedly connected. The stove assembly 302 heats the waste heat coil 303, and a heat storage medium, which can be water, flows inside the waste heat coil 303. The heat from the stove assembly 302 is transferred to the heat storage medium for storage. The inlet end of the waste heat coil 303 is connected to the low-temperature terminal 70 to provide low-temperature water for circulation and heat storage. A seventh control valve k12 is installed on the connecting pipeline between the waste heat coil 303 and the low-temperature terminal 70 to switch the connection between the waste heat coil 303 and the low-temperature terminal 70. The outlet end of the waste heat coil 303 is circulatedly connected to the cascade heat storage device 10 through a second heating network 304, and a second circulation pump 305 is installed on the second heating network 304. The second heating network 304 is also equipped with an eighth control valve k10, necessary for the completion of the process, used to switch the connection between the waste heat coil 303 and the cascade heat storage device 10. The waste heat coil 303 is also connected to the inlet of the heating terminal 50 via an auxiliary pipe, on which a ninth control valve k9 is installed, used to switch the connection between the waste heat coil 303 and the heating terminal 50. The outlet of the waste heat coil 303 is equipped with a second temperature detection component 301, used to measure the outlet water temperature of the waste heat coil 303. Furthermore, the outer peripheral wall of the waste heat coil 303 is provided with an insulation layer to reduce heat loss.

[0046] In some embodiments, the heat pump device 40 includes a heat source pump 402 and a heat exchange assembly 403. The heat exchange assembly 403 is provided with a first heat exchange tube 405 and a second heat exchange tube 406. The first heat exchange tube 405 is circulatedly connected to the heat source pump 402, and a heat exchange medium flows through it. The inlet and outlet of the second heat exchange tube 406 are respectively connected to the low-temperature terminal 70 and the heating terminal 50. Low-temperature water provided by the low-temperature terminal 70 enters the second heat exchange tube 406, exchanges heat with the heat exchange medium in the first heat exchange tube 405, and then flows into the heating terminal 50 to meet the user's hot water needs. The outlet end of the low-temperature terminal 70 is provided with a tenth control valve k6 and a fourth drive pump 701, used to transport the low-temperature water in the low-temperature terminal 70 to other required devices. The heat source pump 402 is circulatedly connected to the cascade heat storage device 10 through a third heating pipeline network 407. The third heating pipeline network 407 is equipped with an eleventh control valve k7 and a twelfth control valve k8 for switching the connection between the heat source pump 402 and the cascade heat storage device 10. The heat source pump 402 is also circulatedly connected to the heating terminal 60 through a second output pipeline. The second output pipeline includes independent supply branch pipes and return branch pipes. The inlet of the supply branch pipe is connected to the heat source pump 402, and the outlet is connected to the second pipeline 13. The outlet of the return branch pipe is connected to the heating terminal 60, and the inlet is connected to the return pipeline 15. Furthermore, a first regulating valve p1 and a second regulating valve p2 are respectively installed on the supply branch pipe and the return branch pipe to achieve connection between the heat source pump 402 and the heating terminal 60. A third temperature detection component 401 is installed at the outlet end of the heat source pump 402 for measuring the outlet heat temperature of the heat source pump 402. The control valve and regulating valve involved in this utility model can both be solenoid valves for electrical control.

[0047] The coupled solar heating device provided by this utility model can realize the following heating modes.

[0048] (1) Solar-powered individual heating, the specific process of which includes: such as Figure 2 As shown, the first circulation pump 203, the first drive pump 16, the second drive pump 17, the third drive pump 18, and the fifth control valve k1, the first control valve k5, the second control valve k4, the third control valve k3, and the fourth control valve k2 are turned on, while the remaining circulation pumps, drive pumps, control valves, and regulating valves are turned off. The solar collector 202 provides heat to the cascade heat storage device 10 independently, and the heat is then delivered to the heating terminal 50, the warming terminal 60, and the low-temperature terminal 70, respectively. When the solar collector 202 needs to be replenished with water, the sixth control valve k11, the tenth control valve k6, and the fourth drive pump 701 are turned on to replenish the solar collector 202 with low-temperature water from the low-temperature terminal 70.

[0049] (2) Waste heat from the stove is supplied separately, and the specific process includes: such as Figure 3 As shown, the second circulation pump 305, the first drive pump 16, the second drive pump 17, the third drive pump 18, and the eighth control valve k10, the ninth control valve k9, the first control valve k5, the second control valve k4, the third control valve k3, and the fourth control valve k2 are turned on. Simultaneously, the remaining circulation pumps, drive pumps, control valves, and regulating valves are turned off. The waste heat utilization device 30 provides heat to the cascade heat storage device 10 separately, and this heat is then delivered to the heating terminal 50, the warming terminal 60, and the low-temperature terminal 70, respectively. When the waste heat coil 303 needs to be replenished with water, the seventh control valve k12, the tenth control valve k6, and the fourth drive pump 701 are turned on to replenish the waste heat coil 303 with low-temperature water from the low-temperature terminal 70.

[0050] (3) The heat pump provides heating independently, and its specific process includes: such as Figure 4 As shown, the first drive pump 16, the second drive pump 17, the fourth drive pump 701, the first control valve k5, the tenth control valve k6, the first regulating valve p1 and the second regulating valve p2 are turned on, while the remaining circulation pumps, drive pumps and control valves are turned off. The heat pump device 40 provides heat to the heating terminal 60 alone, and the low-temperature water in the low-temperature terminal 70 exchanges heat with the heat exchange medium in the heat exchange component 403 to provide domestic hot water to the heating terminal 50.

[0051] (4) Combined solar energy and heat pump heating, the specific process includes: such as Figure 5 As shown, the first circulation pump 203, the first drive pump 16, the second drive pump 17, the third drive pump 18, and the eleventh control valve k7, the twelfth control valve k8, the first regulating valve p1, the second regulating valve p2, the first control valve k5, and the fourth control valve k2 are turned on, while the remaining circulation pumps, drive pumps, and control valves are turned off. The solar collector 202 provides heat to the cascade heat storage device 10, and, in conjunction with the heat pump device 40, delivers the heat to the heating terminal 50, the warming terminal 60, and the low-temperature terminal 70, respectively. When the solar collector 202 needs to be replenished with water, the sixth control valve k11, the tenth control valve k6, and the fourth drive pump 701 are turned on to replenish the solar collector 202 with low-temperature water from the low-temperature terminal 70.

[0052] (5) Combined heating of stove waste heat and heat pump, the specific process includes: such as Figure 6As shown, the second circulation pump 305, the first drive pump 16, the second drive pump 17, the third drive pump 18, and the eighth control valve k10, the ninth control valve k9, the eleventh control valve k7, the twelfth control valve k8, the first regulating valve p1, the second regulating valve p2, the first control valve k5, and the fourth control valve k2 are turned on, while the remaining circulation pumps, drive pumps, and control valves are turned off. The waste heat utilization device 30 provides heat to the cascade heat storage device 10, and together with the heat pump device 40, the heat is delivered to the heating terminal 50, the heating terminal 60, and the low-temperature terminal 70, respectively. When the waste heat coil 303 needs to be replenished with water, the seventh control valve k12, the tenth control valve k6, and the fourth drive pump 701 are turned on to replenish the low-temperature water from the low-temperature terminal 70 to the waste heat coil 303.

[0053] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A coupled solar heating device, characterized in that, The coupled solar heating device includes a cascade heat storage device, a solar collector, a stove waste heat utilization device, a heat pump device, a heating terminal, a warming terminal, and a low-temperature terminal. The cascade heat storage device is equipped with a heating port and a heating outlet. The heating port is connected to the solar collector and the stove waste heat utilization device, respectively. The heating outlet is connected to the heating terminal, the warming terminal, and the low-temperature terminal, respectively. The cascade heat storage device is equipped with a high-temperature phase change heat storage component, a medium-temperature phase change heat storage component, and a low-temperature phase change heat storage component connected in series. The outlet end of the solar collector is equipped with a first temperature detection component. The stove waste heat utilization device is also connected to the heating terminal and the low-temperature terminal, respectively, and is equipped with a second temperature detection component. The heat pump device is connected to the cascade heat storage device, the heating terminal, the warming terminal, and the low-temperature terminal, respectively, and is equipped with a third temperature detection component.

2. The coupled solar heating device according to claim 1, characterized in that, The heat outlet is connected to a first output pipe. The outlet of the first output pipe is divided into three paths: one path is connected to the heating terminal through the first pipe, one path is connected to the heating terminal through the second pipe, and the other path is connected to the low-temperature terminal through the third pipe. The heating terminal is also connected to the cascade heat storage device through a return pipe. A first drive pump is installed on the first pipeline, a second drive pump is installed on the second pipeline, and a third drive pump is installed on the third pipeline.

3. The coupled solar heating device according to claim 1, characterized in that, The heating port is connected to the inlet of the high-temperature phase change heat storage component, the medium-temperature phase change heat storage component and the low-temperature phase change heat storage component through three delivery branch pipes.

4. The coupled solar heating device according to claim 3, characterized in that, The high-temperature phase change heat storage component, the medium-temperature phase change heat storage component, and the low-temperature phase change heat storage component each independently include a heat storage jacket, and a phase change energy storage layer is provided inside the heat storage jacket; The phase change temperature of the phase change energy storage layer in the high-temperature phase change thermal energy storage component, the phase change temperature of the phase change energy storage layer in the medium-temperature phase change thermal energy storage component, and the phase change temperature of the phase change energy storage layer in the low-temperature phase change thermal energy storage component are different from each other.

5. The coupled solar heating device according to claim 1, characterized in that, The solar thermal collector includes a solar collector and a first circulating pump. The solar collector is circulated and connected to the cascade thermal storage device through a first heating pipeline network. The first circulating pump is installed on the first heating pipeline network.

6. The coupled solar heating device according to claim 5, characterized in that, The first heating network is also connected to an external water supply branch pipe, which is connected to the low-temperature terminal and used to supply water to the solar collector.

7. The coupled solar heating device according to claim 1, characterized in that, The waste heat utilization device for the stove includes a stove assembly and a waste heat coil that are fixedly connected. The stove assembly is used to heat the waste heat coil. The inlet end of the waste heat coil is connected to the low-temperature terminal. The outlet end of the waste heat coil is circulated and connected to the cascade heat storage device through a second heating network. A second circulation pump is installed on the second heating network. The waste heat coil is also connected to the inlet end of the heating terminal through an auxiliary pipe. A second temperature detection assembly is installed at the outlet end of the waste heat coil.

8. The coupled solar heating device according to claim 7, characterized in that, The outer peripheral wall of the waste heat coil is provided with a heat insulation layer.

9. The coupled solar heating device according to claim 1, characterized in that, The heat pump device includes a heat source pump and a heat exchange component. The heat exchange component is provided with a first heat exchange tube and a second heat exchange tube. The first heat exchange tube is circulatedly connected to the heat source pump. A heat exchange medium flows in the first heat exchange tube. The inlet and outlet of the second heat exchange tube are respectively connected to the low-temperature terminal and the heating terminal. The heat source pump is circulated and connected to the cascade heat storage device through a third heating pipeline network. The heat source pump is also circulated and connected to the heating terminal through a second output pipeline. The third temperature detection component is installed at the outlet end of the heat source pump.

10. The coupled solar heating device according to claim 1, characterized in that, The low-temperature terminal includes a low-temperature water tank; The heating terminal includes a faucet or a shower head; The heating terminals include underfloor heating or radiators.

Images