Local radiation heating system based on solar heat collection and control method thereof

Abstract

The invention provides a local radiation heating system based on solar heat collection, which comprises a solar heat collector, an energy storage water tank, a local radiation heating tail end and a control module, the solar heat collector is connected with the energy storage water tank through a circulation module, and the energy storage water tank is connected with the heating tail end through a conveying module. An electric auxiliary heating device and a temperature sensor are arranged in the energy storage water tank, the temperature sensor is used for transmitting water temperature information in the energy storage water tank to the control module, and the control method comprises the steps that the control module controls the circulation module to convey water heated by the solar heat collector into the energy storage water tank to be stored; temperature information T in the energy storage water tank is detected through the temperature sensor, and the temperature sensor transmits the temperature information T to the control module; a threshold value T of the water temperature of the energy storage water tank is preset on the control module; and when T is larger than or equal to T, the control module controls the conveying module to convey the water in the energy storage water tank to the heating tail end, and the problem that in the prior art, an existing water circulation heating system is single in heat source is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of solar heating, and particularly relates to a local radiation heating system based on solar heat collection and a control method thereof. Background Art

[0002] In hot summer and cold winter regions, hot summer and warm winter regions, and temperate regions, there are no centralized heating facilities, and the indoor temperature is relatively low for some time in winter, so decentralized heating is mostly adopted. The direct expansion air source heat pump system directly heats the indoor air, which will cause air dryness and low comfort; electric heating equipment such as electric oil radiators, electric radiant heaters, and air heaters has problems such as low energy efficiency, uneven local heat, and insufficient safety protection, and is prone to leakage or scalding risks. As a result, the indoor heating problems in these climate zones are prominent. Although the local radiation heating system based on water circulation can achieve uniform heat distribution, traditional designs mostly use a single heat source, resulting in low energy utilization efficiency. Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the present invention provides a local radiation heating system based on solar heat collection and a control method thereof, which solves the problem of the single heat source in the existing water circulation heating system.

[0004] According to an embodiment of the present invention, a local radiation heating system based on solar heat collection includes: a solar collector, a storage water tank, a local radiation heating terminal, and a control module. The solar collector is connected to the storage water tank through a circulation module, and the storage water tank is connected to the heating terminal through a conveying module. An electric auxiliary heating device and a temperature sensor are arranged in the storage water tank, and the circulation module, the temperature sensor, the conveying module, and the electric auxiliary heating device are all connected to the control module. The temperature sensor is used to transmit the water temperature information in the storage water tank to the control module.

[0005] Compared with the prior art, the present invention has the following beneficial effects: When there is insufficient sunlight, the water temperature in the storage water tank cannot reach the heating water temperature. At this time, the control module controls the electric auxiliary heating device to heat the water in the storage water tank so that it can reach the predetermined heating temperature, and then the conveying module conveys the water in the storage water tank to the heating terminal. The water in the storage water tank circulates between the heating terminal and the storage water tank through the conveying module, thereby achieving the heating effect. When there is sufficient sunlight, the electric energy generated by the photovoltaic panel of the solar collector is sufficient to heat the water in the storage water tank to the specified temperature; Through the above method, solar energy and electric energy are reasonably utilized to ensure the normal operation of the local radiation heating terminal. Compared with directly using electric energy to heat the water of the heating terminal, the natural energy in the environment can be fully utilized, thereby saving electric energy.

[0006] Further, the electric auxiliary heating device includes a heating wire and a control switch. The control switch is used to control the operation of the heating wire. The heating wire is electrically connected to an external power supply, and the control switch is electrically connected to the control module.

[0007] Further, the control module includes: a controller and a user display control panel. The controller is electrically connected to the circulation module, the temperature sensor, the delivery module, and the electric auxiliary heating device. A display screen for displaying the temperature information of the water in the energy storage water tank is provided on the user display control panel.

[0008] Further, the local radiant heating terminal is divided into a warm blanket type heating end and a floating floor type heating end.

[0009] Further, the warm blanket type heating end includes: a memory foam layer and coiled pipes. The coiled pipes are arranged in an S-shaped fold in the memory foam layer, and soft pads are provided at the gaps between adjacent coiled pipes.

[0010] Further, the floating floor type heating end includes: floating floors and a return water pipe. The floating floors are several pieces, and two adjacent floating floors are spliced by buckles. A bent groove is provided at the bottom of each floating floor, and the return water pipe is clamped in the groove.

[0011] Further, the delivery module includes: a first circulation water pump and a delivery pipe. The first circulation water pump is connected to the control module and is electrically connected to an external power supply. The first circulation water pump, the delivery pipe, and the corresponding coiled pipe or return water pipe form a water supply circuit communicating with the energy storage water tank.

[0012] Further, the circulation module includes: a second circulation water pump. The second circulation water pump forms a circuit communicating with the storage tank of the solar collector and the energy storage water tank through a water delivery pipe. The second circulation water pump is also electrically connected to the control module and an external power supply.

[0013] There is also provided a control method for a local radiant heating system based on solar heat collection. The control module is used to control the circulation module to deliver the water heated by the solar collector to the energy storage water tank for storage and to deliver the unheated water in the energy storage water tank to the solar collector for heating; the temperature sensor is used to detect the temperature information T in the energy storage water tank, and the temperature sensor transmits the temperature information T to the control module; a threshold value T of the water temperature in the energy storage water tank is preset on the control module; when providing hot water for the heating terminal and when T≥T, the control module controls the delivery module to deliver the water in the energy storage water tank to the heating terminal; when T<T, the control module controls the electric auxiliary heating device to heat the water in the energy storage water tank until the water temperature reaches T, and then the control module controls the delivery module to deliver the water in the energy storage water tank to the heating terminal. Description of the Drawings

[0014] Figure 1It is a schematic structural diagram of an embodiment of the present invention.

[0015] Figure 2 It is a schematic structural diagram of a warm blanket type end.

[0016] Figure 3 It is a sectional view of a warm blanket type end.

[0017] Figure 4 It is a schematic structural diagram of a suspended floor contacting end.

[0018] In the above-mentioned drawings: 1, solar collector; 2, energy storage water tank; 3, control module; 4, heating end; 5, first circulation water pump; 6, second circulation water pump; 7, electric auxiliary heating device; 8, return water pipe; 9, memory cotton layer; 10, coil pipe; 11, soft pad; 12, suspended floor; 13, buckle. Detailed implementation manners

[0019] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0020] As Figure 1 shown, an embodiment of the present invention provides a local radiation heating system based on solar heat collection, including: a solar collector 1, an energy storage water tank 2, a heating end 4, and a control module 3. The solar collector 1 is connected to the energy storage water tank 2 through a circulation module, and the energy storage water tank 2 is connected to the heating end 4 through a delivery module. An electric auxiliary heating device 7 and a temperature sensor are arranged in the energy storage water tank 2, and the circulation module, the temperature sensor, the delivery module, and the electric auxiliary heating device 7 are all connected to the control module 3. The temperature sensor is used to transmit the water temperature information in the energy storage water tank 2 to the control module 3.

[0021] When there is insufficient sunlight, the water temperature in the energy storage water tank 2 cannot reach the heating water temperature. At this time, the control module 3 controls the electric auxiliary heating device 7 to heat the water in the energy storage water tank 2 so that it can reach the predetermined heating temperature, and then the delivery module transports the water in the energy storage water tank 2 to the heating end 4. The water in the energy storage water tank 2 circulates between the heating end 4 and the energy storage water tank 2 through the delivery module, thereby achieving the heating effect. When there is sufficient sunlight, the electric energy generated by the photovoltaic panel of the solar collector 1 is sufficient to heat the water in the energy storage water tank 2 to the specified temperature; through the above method, solar energy and electric energy are reasonably utilized to ensure that the heating end 4 can work normally. Compared with directly using electric energy to heat the water used by the heating end 4, it can make full use of the energy in the natural environment, thereby saving electric energy.

[0022] Specifically, the control method of the local radiation heating system with solar heat collection is as follows: The control module 3 controls the circulation module to deliver the water heated by the solar collector 1 to the energy storage water tank 2 for storage and deliver the unheated water in the energy storage water tank 2 to the solar collector 1 for heating; The temperature sensor detects the temperature information T in the energy storage water tank 2, and the temperature sensor transmits the temperature information T to the control module 3; A threshold value T of the water temperature in the energy storage water tank 2 is preset on the control module 3; When providing hot water for the heating terminal 4 and when T≥T, the control module 3 controls the delivery module to deliver the water in the energy storage water tank 2 to the heating terminal 4; When T<T, the control module 3 controls the electric auxiliary heating device 7 to heat the water in the energy storage water tank 2 until the water temperature reaches T, and then the control module 3 controls the delivery module to deliver the water in the energy storage water tank 2 to the heating terminal 4.

[0023] Furthermore, the electric auxiliary heating device 7 includes an electric heating wire and a control switch. The control switch is used to control the operation of the electric heating wire. The electric heating wire is electrically connected to an external power supply, and the control switch is electrically connected to the control module 3. The control module 3 includes: a controller and a user display control panel. The controller is electrically connected to the circulation module, the temperature sensor, the delivery module, and the electric auxiliary heating device 7. A display screen for displaying the temperature information of the water in the energy storage water tank 2 is arranged on the user display control panel.

[0024] The temperature sensor transmits the temperature information of the energy storage water tank 2 to the controller, and the controller determines whether it is necessary to start the electric heating wire to heat the water in the energy storage water tank 2. Furthermore, the heating terminal 4 can be divided into a blanket-type heating terminal and a floating floor 12-type heating terminal.

[0025] As an embodiment, as Figure 2 and Figure 3 shown, the blanket-type heating terminal includes: a memory foam layer 9 and coiled pipes 10. The coiled pipes 10 are arranged in an S-shaped fold in the memory foam layer 9, and soft pads 11 are arranged at the gaps between adjacent coiled pipes 10 to ensure that the memory foam layer 9 can be evenly heated, and the arrangement of the soft pads 11 also facilitates folding. This blanket-type heating terminal can be used for paving in environments such as desktops.

[0026] As another embodiment, as Figure 4 shown, the floating floor 12-type heating terminal includes: floating floors 12 and a return water pipe 8. The floating floors 12 are several pieces, and two adjacent floating floors 12 are spliced by buckles 13. A bent groove is arranged at the bottom of each floating floor 12, and the return water pipe 8 is clamped in the groove to ensure uniform heating of the floating floors 12.

[0027] Specifically, the conveying module includes: a first circulating water pump 5 and a conveying pipe. The first circulating water pump 5 is connected to the control module 3 and is electrically connected to an external power supply. The first circulating water pump 5, the conveying pipe, and the corresponding coil pipe 10 or the return water pipe 8 form a water supply circuit communicating with the energy storage water tank 2. The circulating module includes: a second circulating water pump 6. The second circulating water pump 6 forms a circuit communicating with both the water storage tank of the solar collector 1 and the energy storage water tank 2 through a water delivery pipe. The second circulating water pump 6 is also electrically connected to the control module 3 and the external power supply. Both the first circulating water pump 5 and the second circulating water pump 6 are electrically connected to a controller. The first circulating water pump 5 and the second circulating water pump 6 are powered by the external power supply. The controller is used to control the operation of the first circulating water pump 5 to realize the water circulation between the energy storage water tank 2 and the heating terminal 4, and the controller is used to control the operation of the second circulating water pump 6 to realize the water circulation between the energy storage water tank 2 and the solar collector 1.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A local radiation heating system based on solar thermal collection, characterized in that: include: A solar thermal collector (1), an energy storage water tank (2), a local radiation heating terminal (4) and a control module (3), wherein the solar thermal collector (1) is connected to the energy storage water tank (2) via a circulation module, and the energy storage water tank (2) is connected to the heating terminal (4) via a conveying module, an electric auxiliary heating device (7) and a temperature sensor are arranged in the energy storage water tank (2), and the circulation module, the temperature sensor, the conveying module and the electric auxiliary heating device (7) are all connected to the control module (3), and the temperature sensor is used to transmit water temperature information in the energy storage water tank (2) to the control module (3).

2. A local radiant heating system based on solar thermal collection as claimed in claim 1, characterized in that: The electric auxiliary heating device (7) comprises a heating wire and a control switch, wherein the control switch is used to control the operation of the heating wire, the heating wire is electrically connected to an external power source, and the control switch is electrically connected to the control module (3).

3. A local radiation heating system based on solar thermal collection as claimed in claim 1, characterized in that: The control module (3) comprises: a controller and a user display control panel, the controller is electrically connected to the circulation module, the temperature sensor, the conveying module and the electric auxiliary heating device (7), and the user display control panel is provided with a display screen for displaying temperature information of water in the energy storage water tank (2).

4. A local radiation heating system based on solar thermal collection as claimed in claim 1, characterized in that: The heating terminal (4) is divided into a warm blanket type heating terminal and a suspended floor type heating terminal.

5. A local radiation heating system based on solar thermal collection as claimed in claim 4, characterized in that: The warm blanket type heating end comprises: a memory cotton layer (9) and a coil (10); the coil (10) is arranged in an S-shaped folded manner inside the memory cotton layer (9), and a soft pad (11) is provided in the gap between adjacent coils (10).

6. A local radiation heating system based on solar thermal collection as claimed in claim 4, characterized in that: The suspended floor heating end comprises: a suspended floor (12) and a water return pipe (8); the suspended floor (12) is composed of a plurality of pieces; two adjacent suspended floors (12) are spliced ​​together by means of buckles (13); a bent groove is provided at the bottom of each suspended floor (12), and the water return pipe (8) is snap-fitted into the groove.

7. A local radiation heating system based on solar thermal collection as claimed in claim 5 or 6, characterized in that: The delivery module comprises: a first circulating water pump (5) and a delivery pipe, the first circulating water pump (5) is connected to the control module (3), and the first circulating water pump (5) is electrically connected to an external power supply, and the first circulating water pump (5), the delivery pipe and the corresponding coil (10) or return pipe (8) form a water supply circuit connected to the energy storage water tank (2).

8. A local radiation heating system based on solar thermal collection as claimed in claim 1, characterized in that: The circulation module comprises: a second circulation water pump (6), the second circulation water pump (6) forms a loop connected to the water storage tank and the energy storage tank (2) of the solar collector (1) through a water pipe, and the second circulation water pump (6) is also electrically connected to the control module (3) and the external power supply.

9. The control method of the local radiation heating system based on solar thermal collection according to any one of claims 1 to 6, characterized in that: The control module (3) controls the circulation module to transport the water heated by the solar thermal collector (1) to the energy storage tank (2) for storage and to transport the unheated water in the energy storage tank (2) to the solar thermal collector (1) for heating; The temperature information T1 in the energy storage water tank (2) is detected by a temperature sensor, and the temperature sensor transmits the temperature information T1 to the control module (3); A threshold value T of the water temperature of the energy storage water tank (2) is preset on the control module (3); When hot water is provided to the heating terminal (4), and when T1 ≥ T, the control module (3) controls the delivery module to deliver water in the energy storage water tank (2) to the heating terminal (4); When T1<T, the control module (3) controls the electric auxiliary heating device (7) to heat the water in the energy storage water tank (2) until the water temperature reaches T, and then the control module (3) controls the transport module to transport the water in the energy storage water tank (2) to the heating terminal (4).

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