A heating system for poultry farming

Abstract

The utility model relates to the technical field of breeding equipment discloses a heating system for poultry breeding, including air energy heat pump, first heat exchange pipe subassembly, heat exchanger, second heat exchange pipe subassembly, third heat exchange pipe subassembly, floor heating pipe subassembly and circulating pump, first heat exchange pipe subassembly connects air energy heat pump and floor heating pipe subassembly, heat exchanger connects second heat exchange pipe subassembly and third heat exchange pipe subassembly, second heat exchange pipe subassembly is connected with floor heating pipe subassembly, third heat exchange pipe subassembly is used for the heat exchange medium that goes into and generates electricity, first heat exchange pipe subassembly, second heat exchange pipe subassembly all are connected with circulating pump, air energy heat pump, first heat exchange pipe subassembly, heat exchanger, second heat exchange pipe subassembly and floor heating pipe subassembly cooperation form heating pipeline loop, and the heating pipeline loop is used for going in heating water, and the floor heating pipe subassembly is used for connecting with poultry breeding house, since the heating system for poultry breeding adopts air heat energy pump and the heat that generates to realize heating of engine work, it has the advantages, such as environmental protection and energy saving.

Description

Technical Field

[0001] This utility model belongs to the field of breeding equipment technology, and more specifically, relates to a heating system for poultry farming. Background Technology

[0002] In the poultry farming sector, a suitable temperature environment is a key factor in ensuring the healthy growth of poultry and improving farming efficiency. In some large-scale poultry farms, diesel generators and other power generation equipment are used to ensure the stability of power supply. Currently, the heating systems commonly used in poultry farming rely on coal-fired boilers or electric resistance hot air furnaces. This heating method does not utilize the heat generated during the operation of the generator, resulting in energy waste and hindering energy conservation and emission reduction. Summary of the Invention

[0003] The main purpose of this utility model is to provide an environmentally friendly and energy-saving heating system for poultry farming.

[0004] According to a first aspect of this utility model, a heating system for poultry farming is provided, comprising an air source heat pump, a first heat exchange tube assembly, a heat exchanger, a second heat exchange tube assembly, a third heat exchange tube assembly, a floor heating pipe assembly, and a circulation pump. The first heat exchange tube assembly connects the air source heat pump and the floor heating pipe assembly. The heat exchanger connects the second heat exchange tube assembly and the third heat exchange tube assembly. The second heat exchange tube assembly is connected to the floor heating pipe assembly. The third heat exchange tube assembly is used to introduce a heat exchange medium that exchanges heat with a generator. The first heat exchange tube assembly and the second heat exchange tube assembly are both connected to the circulation pump. The air source heat pump, the first heat exchange tube assembly, the heat exchanger, the second heat exchange tube assembly, and the floor heating pipe assembly cooperate to form a heating pipe loop. The heating pipe loop is used to introduce heating water. The floor heating pipe assembly is used to connect to the poultry farm shed.

[0005] In a specific embodiment of this utility model, the underfloor heating pipe assembly includes an underfloor heating main pipe, an underfloor heating inlet pipe, and an underfloor heating outlet pipe. The underfloor heating inlet pipe, the underfloor heating main pipe, and the underfloor heating outlet pipe are connected in sequence. The underfloor heating main pipe is used to connect to a poultry farm. The first heat exchange tube assembly includes a first water supply pipe and a first water return pipe. The first water supply pipe is connected to the air source heat pump and the underfloor heating inlet pipe, and the first water return pipe is connected to the air source heat pump and the underfloor heating outlet pipe. The second heat exchange tube assembly includes a second water supply pipe and a second water return pipe. The second water supply pipe connects the heat exchanger and the underfloor heating inlet pipe, and the second water return pipe connects the heat exchanger and the underfloor heating outlet pipe. The heating system consists of the underfloor heating inlet pipe, the underfloor heating main pipe, the underfloor heating outlet pipe, the air source heat pump, the first water supply pipe, the first return pipe, the heat exchanger, the second water supply pipe, and the second return pipe, forming the heating pipeline circuit.

[0006] In a specific embodiment of this utility model, the poultry farming heating system further includes a check valve, the first return water pipe and the second return water pipe are both connected to the circulation pump, and the first water supply pipe and the second water supply pipe are both connected to the check valve.

[0007] In a specific embodiment of this utility model, the poultry farming heating system further includes an exhaust pipe and an exhaust valve, wherein the exhaust pipe is connected to the underfloor heating water outlet pipe, and the exhaust valve is connected to the exhaust pipe.

[0008] In a specific embodiment of this utility model, the third heat exchange tube assembly includes a third water supply pipe and a third water return pipe. Both the third water supply pipe and the third water return pipe are connected to the heat exchanger. The third water supply pipe and the third water return pipe are used to introduce a heat exchange medium that exchanges heat with the generator. The poultry farming heating system also includes a thermometer, a first pressure gauge, and an electric valve. The thermometer is connected to both the second water supply pipe and the second water return pipe. The first pressure gauge is connected to the third water supply pipe, and the electric valve is connected to the third water return pipe.

[0009] In a specific embodiment of this utility model, the poultry farming heating system further includes a water supply component and a second pressure gauge. The water supply component is connected to the underfloor heating outlet pipe and is used to supply water to the underfloor heating outlet pipe. The second pressure gauge is connected to the first return pipe.

[0010] In a specific embodiment of this utility model, the water replenishment component includes a water replenishment pipe, a filter, a water softener, and a water replenishment valve. The outlet end of the water replenishment pipe is connected to the underfloor heating water outlet pipe. Along the conveying direction of the water replenishment pipe, the filter, the water softener, and the water replenishment valve are sequentially connected to the water replenishment pipe.

[0011] In a specific embodiment of this utility model, the water replenishment component further includes an expansion tank and a connecting pipe, the connecting pipe connecting the expansion tank and the water replenishment pipe, and the connection point between the connecting pipe and the water replenishment pipe is located between the water replenishment valve and the water outlet end of the water replenishment pipe.

[0012] In a specific embodiment of this utility model, the water replenishment component further includes a safety valve, which is connected to the water replenishment pipe and is located on the side of the water replenishment valve away from the water softener.

[0013] In a specific embodiment of this utility model, the number of the underfloor heating pipe assemblies is at least two, and each of the underfloor heating pipe assemblies is connected to the first heat exchange pipe assembly and the second heat exchange pipe assembly.

[0014] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects: This utility model discloses a poultry farming heating system. An air-source heat pump, a first heat exchange tube assembly, a heat exchanger, a second heat exchange tube assembly, and a floor heating pipe assembly work together to form a heating pipeline loop. In practical applications, the floor heating pipe assembly is connected to the poultry shed. Heating water flows through the heating pipeline loop and circulates under the action of a circulating pump. A heat exchange medium is introduced into the third heat exchange tube assembly. This medium exchanges heat with the heat generated by the generator to achieve a certain temperature. When heating is needed for the poultry shed, the heat exchange medium exchanges heat with the heating water in the second heat exchange tube assembly through the heat exchanger, transferring heat to the water. Meanwhile, the air-source heat pump exchanges heat with the heating water in the first heat exchange tube assembly, transferring heat to the water. The heating water flowing through the floor heating pipe assembly heats the poultry shed. Because the heating is achieved using an air-source heat pump and the heat generated by the engine, this poultry farming heating system has the advantages of being environmentally friendly and energy-saving. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of a heating system for poultry farming according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of a heating system for poultry farming according to another embodiment of this utility model.

[0016] In the diagram, 1. Air source heat pump; 2. First heat exchanger tube assembly; 21. First water supply pipe; 22. First return water pipe; 3. Heat exchanger; 4. Second heat exchanger tube assembly; 41. Second water supply pipe; 42. Second return water pipe; 5. Third heat exchanger tube assembly; 51. Third water supply pipe; 52. Third return water pipe; 6. Underfloor heating pipe assembly; 61. Underfloor heating main pipe; 62. Underfloor heating inlet pipe; 63. Underfloor heating outlet pipe; 7. Circulation pump; 8. Check valve; 9. Vent pipe; 10. Vent valve; 11. Thermometer; 12. First pressure gauge; 13. Electric valve; 14. Water supply assembly; 141. Water supply pipe; 142. Filter; 143. Water softener; 144. Water supply valve; 145. Expansion tank; 146. Connecting pipe; 147. Safety valve; 15. Second pressure gauge. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] Reference Figure 1 As shown in the preferred embodiment of this application, a poultry farming heating system includes an air source heat pump 1, a first heat exchange tube assembly 2, a heat exchanger 3, a second heat exchange tube assembly 4, a third heat exchange tube assembly 5, a floor heating pipe assembly 6, and a circulation pump 7. The first heat exchange tube assembly 2 connects the air source heat pump 1 and the floor heating pipe assembly 6. The heat exchanger 3 connects the second heat exchange tube assembly 4 and the third heat exchange tube assembly 5. The second heat exchange tube assembly 4 is connected to the floor heating pipe assembly 6. The third heat exchange tube assembly 5 is used to introduce a heat exchange medium that exchanges heat with a generator. The first heat exchange tube assembly 2 and the second heat exchange tube assembly 4 are both connected to the circulation pump 7. The air source heat pump 1, the first heat exchange tube assembly 2, the heat exchanger 3, the second heat exchange tube assembly 4, and the floor heating pipe assembly 6 cooperate to form a heating pipe loop. The heating pipe loop is used to introduce heating water. The floor heating pipe assembly 6 is used to connect to the poultry farmhouse.

[0019] The poultry farming heating system of this application comprises an air source heat pump 1, a first heat exchange tube assembly 2, a heat exchanger 3, a second heat exchange tube assembly 4, and a floor heating tube assembly 6, which together form a heating pipe loop. In practical applications, the floor heating tube assembly 6 is connected to the poultry shed. Heating water flows through the heating pipe loop and circulates within it under the action of a circulating pump 7. A heat exchange medium is introduced into the third heat exchange tube assembly 5. This heat exchange medium exchanges heat with the heat generated by the generator to achieve a certain temperature. When heating is required for poultry farms, the heat exchange medium exchanges heat with the heating water in the second heat exchange tube assembly 4 through the heat exchanger 3 to transfer heat to the heating water. Meanwhile, the air source heat pump 1 exchanges heat with the heating water in the first heat exchange tube assembly 2 to transfer heat to the heating water. When the heating water flows in the floor heating pipe assembly 6, it can heat the poultry farm. In this process, the heating is achieved by using the heat generated by the air source heat pump and the engine. Therefore, the heating system for poultry farming has the advantages of being environmentally friendly and energy-saving.

[0020] For example, a poultry house is a chicken house used for raising chickens.

[0021] In this embodiment, the underfloor heating pipe assembly 6 includes an underfloor heating main pipe 61, an underfloor heating inlet pipe 62, and an underfloor heating outlet pipe 63. The underfloor heating inlet pipe 62, the underfloor heating main pipe 61, and the underfloor heating outlet pipe 63 are connected sequentially. The underfloor heating main pipe 61 is used to connect to the poultry farm. The underfloor heating main pipe 61 includes multiple pipe bodies arranged side by side. The first heat exchange pipe assembly 2 includes a first water supply pipe 21 and a first water return pipe 22. The first water supply pipe 21 connects the air source heat pump 1 and the underfloor heating inlet pipe 62, and the first water return pipe 22 connects the air source heat pump 1 and the underfloor heating outlet pipe 63. Specifically, the air source heat pump 1 has a heat exchange chamber, and the first water supply pipe 21 and the first water return pipe 22 are connected to the heat exchange chamber, which constitutes a heating pipe loop. Part 4; the second heat exchanger assembly 4 includes a second water supply pipe 41 and a second water return pipe 42. The second water supply pipe 41 connects the heat exchanger 3 and the underfloor heating inlet pipe 62, and the second water return pipe 42 connects the heat exchanger 3 and the underfloor heating outlet pipe 63. Specifically, the heat exchanger 3 is a plate heat exchanger 3. The heating water flows into the heat exchanger 3 from the second water return pipe 42 and is output from the second water supply pipe 41. The heating water exchanges heat with the heat exchange medium in the heat exchanger 3, and the heat exchange medium transfers heat to the heating water. The underfloor heating inlet pipe 62, the underfloor heating main pipe 61, the underfloor heating outlet pipe 63, the air source heat pump 1, the first water supply pipe 21, the first water return pipe 22, the heat exchanger 3, the second water supply pipe 41, and the second water return pipe 42 form a heating pipeline loop.

[0022] It should be noted that both the air source heat pump 1 and the heat exchanger 3 are existing technologies, and this application will not elaborate on them further.

[0023] In this embodiment, the poultry farming heating system also includes a check valve 8. The first return water pipe 22 and the second return water pipe 42 are both connected to a circulation pump 7. The circulation pump 7 on the first return water pipe 22 is used to ensure that the heating water flows smoothly into the air source heat pump 1 for heat exchange. The circulation pump 7 on the second return water pipe 42 is used to ensure that the heating water flows smoothly into the heat exchanger 3 for heat exchange. The first supply water pipe 21 and the second supply water pipe 41 are both connected to a check valve 8. The check valve 8 on the first supply water pipe 21 can prevent the heating water from flowing back into the air source heat pump 1, while the check valve 8 on the second supply water pipe 41 can prevent the heating water from flowing back into the heat exchanger 3.

[0024] In this embodiment, the poultry farming heating system also includes an exhaust pipe 9 and an exhaust valve 10. The exhaust pipe 9 is connected to the underfloor heating outlet pipe 63, and the exhaust valve 10 is connected to the exhaust pipe 9. In practical applications, the exhaust pipe 9 extends vertically upward, with its lower end connected to the underfloor heating outlet pipe 63 and its upper end open. The exhaust valve 10 is normally closed. Opening the exhaust valve 10 can allow the gas in the heating pipe circuit to be discharged, ensuring the circulation efficiency of the heating water.

[0025] In this embodiment, the third heat exchanger assembly 5 includes a third water supply pipe 51 and a third water return pipe 52. Both the third water supply pipe 51 and the third water return pipe 52 are connected to the heat exchanger 3. The third water supply pipe 51 and the third water return pipe 52 are used to introduce a heat exchange medium that exchanges heat with the generator. Specifically, the heat exchange medium is liquid water. The heat exchange medium is input into the heat exchanger 3 through the third water supply pipe 51 and output from the third water return pipe 52. The heat exchange medium exchanges heat with the heating water in the heat exchanger 3 to transfer heat to the heating water. The poultry farming heating system also includes a thermometer 11, a first pressure gauge 12, and an electric valve 13, and a second water supply pipe 41. The second return water pipe 42 is connected to a thermometer 11, the third supply water pipe 51 is connected to a first pressure gauge 12, and the third return water pipe 52 is connected to an electric valve 13. Specifically, the function of the thermometer 11 is to monitor the temperature of the heating water flowing through the heat exchanger 3. When the temperature is too low, adjusting the opening of the electric valve 13 can increase the flow rate of the heat exchange medium, thereby increasing the temperature of the heating water and ensuring the normal operation of the heating work. The function of the pressure gauge is to provide feedback on the pressure change of the third supply water pipe 51. The pressure gauge and the electric valve 13 work together to avoid excessive pressure fluctuations caused by the electric valve 13 when adjusting the opening, thus ensuring safe operation.

[0026] In this embodiment, the poultry farming heating system also includes a water supply component 14 and a second pressure gauge 15. The water supply component 14 is connected to the underfloor heating outlet pipe 63 and is used to supply water to the underfloor heating outlet pipe 63. The second pressure gauge 15 is connected to the first return pipe 22. The function of the second pressure gauge 15 is to provide feedback on the pressure change of the first return pipe 22. When the pressure in the first return pipe 22 decreases, water is supplied to the underfloor heating outlet pipe through the water supply component 14 to maintain the stable pressure of the heating pipeline circuit, thereby ensuring the normal operation of the heating water circulation.

[0027] Furthermore, the water replenishment component 14 includes a water replenishment pipe 141, a filter 142, a water softener 143, and a water replenishment valve 144. The outlet end of the water replenishment pipe 141 is connected to the underfloor heating outlet pipe 63. Along the conveying direction of the water replenishment pipe 141, the filter 142, the water softener 143, and the water replenishment valve 144 are sequentially connected to the water replenishment pipe 141. The inlet end of the water replenishment pipe 141 is connected to the water supply source. When replenishing water, the water replenishment valve 144 is opened, and the water supply source supplies water to the water replenishment pipe 141. The water flows through pipe 141, passing through filter 142, water softener 143, and water supply valve 144, and is output to the underfloor heating outlet pipe 63, thereby replenishing the heating pipe circuit. Specifically, the function of filter 142 is to filter impurities in the water to prevent impurities from accumulating in the heating pipe circuit and to ensure the heating effect. For example, filter 142 is a cartridge filter. The function of water softener 143 is to remove calcium and magnesium ions from the water, reduce the formation of scale, and ensure the heating effect.

[0028] Furthermore, the water replenishment component 14 also includes an expansion tank 145 and a connecting pipe 146. The connecting pipe 146 connects the expansion tank 145 and the water replenishment pipe 141, and the connection point between the connecting pipe 146 and the water replenishment pipe 141 is located between the water replenishment valve 144 and the water outlet of the water replenishment pipe 141. The function of the expansion tank 145 is to buffer the fluctuation of the water replenishment pressure.

[0029] Furthermore, the water replenishment component 14 also includes a safety valve 147, which is connected to the water replenishment pipe 141 and is located on the side of the water replenishment valve 144 away from the water softener 143. The function of the safety valve 147 is to prevent overpressure and ensure the safe operation of the water replenishment.

[0030] In some embodiments, refer to Figure 2 As shown, there are at least two underfloor heating pipe assemblies 6, each connected to a first heat exchange pipe assembly 2 and a second heat exchange pipe assembly 4. For example, there are two poultry sheds, each connected to one of the two underfloor heating pipe assemblies 6. In this case, the first supply pipe 21 of the first heat exchange pipe assembly 2 is simultaneously connected to the underfloor heating inlet pipes 62 of both underfloor heating pipe assemblies 6, and the first return pipe 22 of the first heat exchange pipe assembly 2 is simultaneously connected to the underfloor heating outlet pipes 63 of both underfloor heating pipe assemblies 6. Similarly, the second supply pipe 41 of the second heat exchange pipe assembly 4 is simultaneously connected to the underfloor heating inlet pipes 62 of both underfloor heating pipe assemblies 6, and the second return pipe 42 of the second heat exchange pipe assembly 4 is simultaneously connected to the two underfloor heating outlet pipes 63 of both underfloor heating pipe assemblies 6. The underfloor heating pipe assembly 6 has an outlet pipe 63, and the two main pipes 61 of the underfloor heating pipe assembly 6 are respectively connected to two poultry farms, thereby realizing the heating work of the two poultry farms. Furthermore, each of the two outlet pipes 63 of the underfloor heating pipe assembly 6 is connected to an electric control valve, which controls the opening and closing of the outlet pipe 63. Thus, when heating is needed to both poultry farms at the same time, both electric control valves are opened. When heating is only needed to one poultry farm, the electric control valve of the corresponding outlet pipe 63 is opened, and the other electric control valve remains closed. Based on this, the heating system for poultry farming can flexibly control the heating work.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heating system for poultry farming, characterized in that, The system includes an air source heat pump (1), a first heat exchange tube assembly (2), a heat exchanger (3), a second heat exchange tube assembly (4), a third heat exchange tube assembly (5), a floor heating tube assembly (6), and a circulation pump (7). The first heat exchange tube assembly (2) is connected to the air source heat pump (1) and the floor heating tube assembly (6). The heat exchanger (3) is connected to the second heat exchange tube assembly (4) and the third heat exchange tube assembly (5). The second heat exchange tube assembly (4) is connected to the floor heating tube assembly (6). The third heat exchange tube assembly (5) is used to introduce a heat exchange medium that exchanges heat with the generator. The first heat exchange tube assembly (2) and the second heat exchange tube assembly (4) are both connected to the circulation pump (7). The air source heat pump (1), the first heat exchange tube assembly (2), the heat exchanger (3), the second heat exchange tube assembly (4), and the floor heating tube assembly (6) cooperate to form a heating pipe loop. The heating pipe loop is used to introduce heating water. The floor heating tube assembly (6) is used to connect to a poultry farm.

2. The poultry farming heating system according to claim 1, characterized in that, The floor heating pipe assembly (6) includes a floor heating main pipe (61), a floor heating inlet pipe (62), and a floor heating outlet pipe (63). The floor heating inlet pipe (62), the floor heating main pipe (61), and the floor heating outlet pipe (63) are connected in sequence. The floor heating main pipe (61) is used to connect to the poultry farmhouse. The first heat exchange tube assembly (2) includes a first water supply pipe (21) and a first water return pipe (22). The first water supply pipe (21) is connected to the air source heat pump (1) and the floor heating inlet pipe (62). The first water return pipe (22) is connected to the air source heat pump (1) and the floor heating outlet pipe (63). The second heat exchange tube assembly (4) includes a second water supply pipe (41) and a second water return pipe (42). The second water supply pipe (41) connects the heat exchanger (3) and the underfloor heating inlet pipe (62), and the second water return pipe (42) connects the heat exchanger (3) and the underfloor heating outlet pipe (63). The heating pipe circuit consists of the floor heating inlet pipe (62), the floor heating main pipe (61), the floor heating outlet pipe (63), the air source heat pump (1), the first water supply pipe (21), the first water return pipe (22), the heat exchanger (3), the second water supply pipe (41), and the second water return pipe (42).

3. The poultry farming heating system according to claim 2, characterized in that, The poultry farming heating system also includes a check valve (8), the first return water pipe (22) and the second return water pipe (42) are both connected to the circulation pump (7), and the first water supply pipe (21) and the second water supply pipe (41) are both connected to the check valve (8).

4. The poultry farming heating system according to claim 2, characterized in that, The poultry farming heating system also includes an exhaust pipe (9) and an exhaust valve (10). The exhaust pipe (9) is connected to the floor heating outlet pipe (63), and the exhaust valve (10) is connected to the exhaust pipe (9).

5. The poultry farming heating system according to claim 2, characterized in that, The third heat exchange tube assembly (5) includes a third water supply pipe (51) and a third water return pipe (52). The third water supply pipe (51) and the third water return pipe (52) are both connected to the heat exchanger (3). The third water supply pipe (51) and the third water return pipe (52) are used to introduce the heat exchange medium that exchanges heat with the generator. The poultry farming heating system also includes a thermometer (11), a first pressure gauge (12) and an electric valve (13). The thermometer (11) is connected to the second water supply pipe (41) and the second water return pipe (42). The first pressure gauge (12) is connected to the third water supply pipe (51), and the electric valve (13) is connected to the third water return pipe (52).

6. The poultry farming heating system according to claim 2, characterized in that, The poultry farming heating system also includes a water supply component (14) and a second pressure gauge (15). The water supply component (14) is connected to the floor heating outlet pipe (63) and is used to supply water to the floor heating outlet pipe (63). The second pressure gauge (15) is connected to the first return pipe (22).

7. The poultry farming heating system according to claim 6, characterized in that, The water supply component (14) includes a water supply pipe (141), a filter (142), a water softener (143), and a water supply valve (144). The outlet end of the water supply pipe (141) is connected to the floor heating outlet pipe (63). Along the conveying direction of the water supply pipe (141), the filter (142), the water softener (143), and the water supply valve (144) are sequentially connected to the water supply pipe (141).

8. The poultry farming heating system according to claim 7, characterized in that, The water replenishment component (14) also includes an expansion tank (145) and a connecting pipe (146), the connecting pipe (146) connecting the expansion tank (145) and the water replenishment pipe (141), and the connection point of the connecting pipe (146) and the water replenishment pipe (141) is located between the water replenishment valve (144) and the water outlet of the water replenishment pipe (141).

9. The poultry farming heating system according to claim 7, characterized in that, The water supply assembly (14) also includes a safety valve (147), which is connected to the water supply pipe (141) and is located on the side of the water supply valve (144) away from the water softener (143).

10. The poultry farming heating system according to claim 1, characterized in that, The number of the floor heating pipe assembly (6) is at least two, and each floor heating pipe assembly (6) is connected to the first heat exchange pipe assembly (2) and the second heat exchange pipe assembly (4).

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