Floor with floor heating air-conditioning structure and commercial building with floor heating air-conditioning structure

Abstract

The invention relates to the technical field of floor heating installation, in particular to a floor with a floor heating air conditioner structure and a commercial building thereof.The floor with the floor heating air conditioner structure comprises a floor heating pipe used for transmitting carbon dioxide, a valve and a floor, and the floor heating pipe is arranged in the floor and can transfer heat to the floor; the valve is arranged on the floor heating pipe and can adjust the flow velocity of carbon dioxide in the floor heating pipe; the floor heating pipe comprises an air supply pipe, a liquid return pipe and a plurality of branch pipes, one end of each branch pipe is communicated with the liquid return pipe, and the other end of each branch pipe is communicated with the air supply pipe. Carbon dioxide is used as a heat transfer medium, the ground can be directly heated, the intermediate transfer link of Freon heat transfer water supply and water heat transfer to the ground is omitted, the heat transfer efficiency is improved, heat transfer loss is reduced, higher indoor temperature is provided, and the use cost of floor heating is reduced.

Description

Technical Field

[0001] This application relates to the field of underfloor heating installation technology, and in particular to a floor and commercial building with an underfloor heating and air conditioning structure. Background Technology

[0002] Underfloor heating, short for radiant floor heating, uses the entire floor as a radiator. The heat medium in the radiant floor layer evenly heats the entire floor, and then heats the room through radiation and convection to achieve comfortable heating.

[0003] Underfloor heating systems are classified into two categories based on different heat transfer media: water-based and electric. They are also mainly divided into two types based on different installation structures: dry and wet. Water-based underfloor heating refers to a heating method that heats water to a certain temperature and then delivers it to a network of pipes beneath the floor for heat dissipation. The floor heats up to achieve the purpose of heating. Water-based underfloor heating uses hot water at a temperature not exceeding 60℃ as the heat medium, circulating within water pipes embedded in the floor lining. This heats the entire floor, and heat is then transferred to the room through radiation and convection. This heat transfer method only heats the floor slab, resulting in a slower heating rate, lower heat transfer efficiency, and higher energy consumption when heating the room. Summary of the Invention

[0004] The purpose of this application is to provide a more energy-efficient and effective underfloor heating structure and its commercial building.

[0005] Firstly, the technical solution provided in this application for a floor with underfloor heating and air conditioning structure is as follows: A floor with a floor heating and air conditioning structure includes floor heating pipes for transmitting carbon dioxide, valves and a floor, wherein the floor heating pipes are disposed in the floor and are capable of transferring heat to the floor, and the valves are disposed on the floor heating pipes and are capable of regulating the flow rate of carbon dioxide in the floor heating pipes. The underfloor heating pipe includes a gas supply pipe, a return pipe, and several branch pipes. One end of each of the several branch pipes is connected to the return pipe, and the other end of each of the several branch pipes is connected to the gas supply pipe.

[0006] By adopting the above technical solution, carbon dioxide is used as the medium for heat transfer to the ground. Carbon dioxide has excellent thermal conductivity. During the heat transfer process, carbon dioxide enters the branch pipe from the gas supply pipe in gaseous form. After exchanging heat with the floor in the branch pipe, the temperature decreases and it turns into liquid and flows out from the return pipe. Compared with traditional underfloor heating that uses water as the medium, carbon dioxide directly heats the ground, eliminating the intermediate transfer link of Freon heat transfer to water and then water heat transfer to the ground. This helps to improve heat transfer efficiency, reduce heat transfer loss, provide a higher indoor temperature, and reduce the cost of using underfloor heating.

[0007] Optionally, the valve includes a check valve and a throttle valve, wherein the check valve is connected to the outlet end of the branch pipe and the throttle valve is connected to the inlet end of the branch pipe.

[0008] By adopting the above technical solutions, the check valve can reduce the possibility of liquid carbon dioxide backflow, which is beneficial to improving the safety of the underfloor heating and air conditioning structure. The check valve has a variety of selection methods, and its adaptability and versatility are higher.

[0009] Optionally, the valve may further include an overflow valve connected to the return pipe.

[0010] By adopting the above technical solution, the overflow valve remains closed when the system is working normally. When the load on the return pipe exceeds the specified limit, the overflow valve opens to provide overload protection, so that the system pressure no longer increases and the pressure in the return pipe remains relatively stable, which is beneficial to improving the stability of the underfloor heating air conditioner.

[0011] Optionally, carbon dioxide enters the branch pipe in gaseous form from the gas supply pipe, and flows out in liquid form from the return pipe after passing through the overflow valve.

[0012] By adopting the above technical solution, the gas accumulates at the overflow valve, causing the pressure to rise. When the carbon dioxide reaches the set pressure of the overflow valve, the overflow valve opens, and the liquefied carbon dioxide enters the return pipe and is compressed into high-temperature and high-pressure gaseous carbon dioxide by the compressor. This helps to improve the efficiency of heating carbon dioxide and reduce heat loss.

[0013] Optionally, the check valve is any one of a one-way valve, a solenoid valve, an electronic expansion valve, or a one-way relief valve, the throttle valve is an electronic expansion valve, and the relief valve is any one of an electronic expansion valve, a solenoid valve, or a one-way valve.

[0014] By adopting the above technical solutions, the selection of relief valves becomes more diverse, with higher adaptability and greater versatility. When both check valves and relief valves use solenoid valves or electronic expansion valves, the adjustment of check valves and relief valves can be controlled by a control panel that matches the solenoid valve or electronic expansion valve, realizing the opening and closing of each branch, which is conducive to precise control.

[0015] Optionally, the gas supply pipe, the liquid return pipe, and the branch pipes are all made of steel, copper, or alloy materials.

[0016] In related technologies, underfloor heating pipes using water as the heat transfer medium are made of plastic pipes, which can withstand very low pressure. However, in order to ensure that carbon dioxide can transfer heat within the underfloor heating pipes and smoothly transform from a gaseous state to a liquid state, the underfloor heating pipes need to withstand greater pressure. By adopting the above-mentioned technical solution, the overall strength of the underfloor heating pipes is improved, ensuring the normal operation of the underfloor heating pipes.

[0017] Optionally, it may also include a fan, which is placed on the floor and connected to the underfloor heating pipe, the fan being used to transfer heat from the underfloor heating pipe.

[0018] By adopting the above technical solution, the fan can generate airflow, which carries and transfers the heat from the underfloor heating pipes into the floor. Through the synchronous delivery of heat into the floor by the underfloor heating pipes and the fan, the heat is more evenly distributed in the room, which helps to improve the efficiency of heat utilization and reduce the cost of using underfloor heating.

[0019] Optionally, the floor includes a concrete slab, a reflective layer, a wire mesh, a heat storage layer, and a rock slab laid in sequence, and the branch pipe is installed on the wire mesh and abuts against the heat storage layer.

[0020] By adopting the above technical solutions, the insulation effect of the base plate can be improved, enabling the base plate to transfer heat to the room more persistently, which helps to reduce heat loss and further reduce the operating cost of underfloor heating and air conditioning.

[0021] Optionally, the reflective layer is made of aluminum foil or extruded insulation board with aluminum foil, and the heat storage layer is made of a mixture of pebbles, sand and cement.

[0022] By adopting the above technical solution, aluminum foil can effectively reflect heat radiation. The heat transmitted downward by the underfloor heating pipes is reflected by the reflective layer and then radiated in the height direction of the base plate, which helps to reduce heat radiation loss. The surface of the pebbles is smooth, without sharp edges, and has good thermal conductivity, which reduces the possibility of the heat storage layer scratching the underfloor heating pipes. While improving the heat transfer efficiency, it can also protect the underfloor heating pipes, further reducing heat loss and improving the safety of using underfloor heating.

[0023] Secondly, the commercial building provided in this application adopts the following technical solution: A commercial building includes several ventilated floors and several floors with underfloor heating and air conditioning structures. The floor with underfloor heating and air conditioning structures is provided between two adjacent ventilated floors, and the fans are provided in each of the several ventilated floors.

[0024] Traditional commercial buildings typically have underfloor heating and air conditioning systems installed on every floor. During winter, all the underfloor heating is turned on, resulting in high indoor temperatures and energy waste. Furthermore, installing underfloor heating on every floor increases installation costs. By adopting the above-mentioned technology, fans can transfer some heat to the ventilated floors, raising their temperature and creating a more even heat distribution between the two floors. A single underfloor heating and air conditioning system can heat both floors, reducing energy consumption and lowering construction and operating costs for commercial buildings.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. In this application, carbon dioxide is used as the medium for heat transfer to the floor. Carbon dioxide has excellent thermal conductivity. During the heat transfer process, carbon dioxide enters the branch pipe from the gas supply pipe in gaseous form. After exchanging heat with the floor in the branch pipe, the temperature decreases and it turns into liquid and flows out from the return pipe. Compared with traditional underfloor heating that uses water as the medium, carbon dioxide directly heats the floor, eliminating the intermediate transfer link of Freon heat transfer to water and then water heat transfer to the floor. This helps to improve heat transfer efficiency, reduce heat transfer loss, provide a higher indoor temperature, and reduce the cost of using underfloor heating.

[0026] 2. The check valve and relief valve in this application can be selected in various ways, which makes them more adaptable and versatile. When both the check valve and relief valve are solenoid valves or electronic expansion valves, the adjustment of the check valve and relief valve can be controlled by a control panel that matches the solenoid valve or electronic expansion valve, so as to realize the opening and closing of each branch, which is conducive to precise control. In addition, carbon dioxide transfers heat and is converted from gaseous to liquid after passing through the relief valve, which facilitates the heating of the medium by the corresponding heating equipment and reduces heat loss.

[0027] 3. The underfloor heating pipes in this application transfer some heat to the ventilated floors under the action of the fan, thereby increasing the temperature in the ventilated floors and making the heat distribution between the two floors more uniform. The underfloor heating and air conditioning structure can heat both floors, which helps to reduce energy consumption and reduce the construction cost and subsequent operating cost of commercial buildings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a floor with underfloor heating and air conditioning in Embodiment 1 of this application; Figure 2 yes Figure 1 A magnified view of part A in the middle; Figure 3 This is a three-dimensional structural diagram of the underfloor heating pipe and valve in Embodiment 1 of this application; Figure 4 This is a cross-sectional view of the floor and underfloor heating pipes in Embodiment 1 of this application; Figure 5 yes Figure 4 A magnified view of part B in the middle section; Figure 6 yes Figure 4 A magnified view of part C in the middle; Figure 7 This is a cross-sectional structural diagram of the wall in Embodiment 1 of this application; Figure 8This is a schematic diagram of the overall structure of a floor with underfloor heating and air conditioning and a ventilation floor, as shown in Embodiment 1 of this application.

[0029] Figure 9 This is a three-dimensional structural diagram of the underfloor heating pipe and valve after adding an overflow valve in Embodiment 1 of this application; In the diagram, 1. Underfloor heating pipe; 11. Gas supply pipe; 12. Return pipe; 13. Branch pipe; 131. Inlet end; 132. Outlet end; 2. Valve; 21. Check valve; 22. Throttling valve; 23. Overflow valve; 3. Fan; 4. Floor; 41. Concrete slab; 42. Reflective layer; 43. Wire mesh; 44. Heat storage layer; 45. Rock slab; 5. Wall; 6. Ceiling; 7. Floor slab; 8. Ventilated floor; 9. Heat transfer pipe. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail below.

[0031] Example 1: A floor with underfloor heating and air conditioning structure, refer to Figure 1 and Figure 2 The system includes a floor heating pipe 1 for transmitting carbon dioxide, a valve 2, a fan 3, a floor 4, and a wall 5. The wall 5 is fixedly connected to the floor 4. The floor heating pipe 1 is installed inside the floor 4. The valve 2 is installed on the floor heating pipe 1 and can adjust the flow rate of carbon dioxide in the floor heating pipe 1. Preferably, in this embodiment, the valve 2 is integrated at an integration hole 51 opened in the wall 5 for easy adjustment.

[0032] Combination Figure 1 and Figure 3 The underfloor heating pipe 1 includes a gas supply pipe 11, a return pipe 12, and several branch pipes 13. The branch pipes 13 bend outwards multiple times and are coiled inside the floor. As a preferred embodiment of this application, the number of branch pipes 13 in this embodiment 1 is 2. In other embodiments, the number of branch pipes 13 can be more than 2, depending on the number of rooms formed by the wall partition. The outer diameter of the gas supply pipe 11, the return pipe 12, and the two branch pipes 13 is 6mm.

[0033] Reference Figure 2 and Figure 3 The wall 5 surrounds the outer perimeter of the branch pipe 13 and is fixedly connected to the floor 4. The gas supply pipe 11, the return liquid pipe 12, and the two branch pipes 13 are all made of steel, copper, or alloy materials. As a preferred embodiment of this application, in this embodiment 1, the gas supply pipe 11, the return liquid pipe 12, and the two branch pipes 13 are all made of copper pipe. One end of each of the two branch pipes 13 is connected to the return liquid pipe 12, and the other end of each of the two branch pipes 13 is connected to the gas supply pipe 11. Figure 2Valve 2 includes a check valve 21 and a throttle valve 22. The check valve 21 is connected to the outlet end 132 of the branch pipe 13, and the throttle valve 22 is connected to the inlet end 131 of the branch pipe 13. The check valve 21 is any one of a check valve, a solenoid valve, an electronic expansion valve, or a one-way relief valve 23. The throttle valve 22 is an electronic expansion valve. As a preferred embodiment of this application, in this embodiment 1, the check valve 21 is selected as a one-way relief valve 23.

[0034] Reference Figure 2 and Figure 3 By opening the throttle valve 22 and controlling the flow rate in the pipe, gaseous carbon dioxide flows from the gas supply pipe 11 into each branch pipe 13. After heat exchange between the branch pipe 13 and the base plate, the carbon dioxide changes from gaseous to liquid and eventually flows from each branch pipe 13 into the return pipe 12. The throttle valve 22 prevents liquid carbon dioxide from flowing back into the branch pipe 13, reducing the possibility of pipe explosion caused by the impact between the backflowing carbon dioxide and the normally flowing carbon dioxide, thus improving the safety of the underfloor heating pipe 1.

[0035] Reference Figure 4 Valve 2 also includes an overflow valve 23, which is connected to the return pipe 12. After heat exchange in the branch pipe 13, the temperature of carbon dioxide gas decreases and then flows into the return pipe 12. It begins to accumulate at the overflow valve 23, causing the pressure to rise. The increased pressure causes the carbon dioxide to liquefy. The liquefied carbon dioxide reaches the set pressure of the overflow valve 23, causing the overflow valve 23 to open. The liquefied carbon dioxide enters the return pipe 12 and is heated by the corresponding equipment, then converted into high-temperature gaseous carbon dioxide and enters the gas supply pipe 11. It circulates repeatedly in the underfloor heating pipe 1, improving the efficiency of heating carbon dioxide and reducing heat loss.

[0036] Reference Figure 9 The overflow valve 23 can be any one of an electronic expansion valve, a solenoid valve, or a check valve. As a preferred embodiment of this application, both the overflow valve 23 and the throttle valve 22 in this embodiment 1 are electronic expansion valves, and both the overflow valve 23 and the throttle valve 22 are controlled by a control panel.

[0037] Reference Figure 4 and Figure 5 The floor 4 includes a concrete slab 41, a reflective layer 42, a wire mesh 43, a heat storage layer 44, and a rock slab 45 laid in sequence. The branch pipe 13 is fixed to the wire mesh 43 by a retaining ring and abuts against the heat storage layer 44. Specifically, the mesh size of the wire mesh 43 is 50X50mm. The retaining ring reduces the possibility of the branch pipe 13 moving or deforming during installation, so as to ensure the normal operation of the branch pipe 13. The reflective layer 42 is made of aluminum foil or extruded insulation board with aluminum foil. As a preferred embodiment of this application, the reflective layer 42 in this embodiment 1 is made of aluminum foil. The heat radiated by the branch pipe 13 is reflected and transferred to the upper end of the reflective layer 42 through the aluminum foil to achieve uniform heat conduction.

[0038] Reference Figure 4 and Figure 5 The heat storage layer 44 is made of a mixture of pebbles, sand and cement. As a preferred embodiment of this application, the mixing ratio of pebbles, sand and cement in this embodiment 1 is 3:2:1. The mixed material is poured onto the branch pipe 13 and finally solidifies to form the heat storage layer 44. Specifically, the thickness of the heat storage layer 44 is 6 cm. Pebbles have good thermal conductivity and a smooth surface without sharp edges, which is beneficial to protect the branch pipe 13 and reduce the possibility of the branch pipe 13 being scratched while fully transferring heat.

[0039] This embodiment 1 also discloses a commercial building, referring to... Figure 8 It includes several ventilated floors 8 and several floors with underfloor heating and air conditioning structures. The floor with underfloor heating and air conditioning structure is set between two adjacent ventilated floors 8. The fan 3 is set in each of the several ventilated floors. The fan 3 can be set as a floor-standing type, abutting against the floor 4 of the corresponding floor, or it can be set as a ceiling type, forming a concealed installation. In this embodiment, the fan 3 is set as a ceiling-mounted fan. It should be noted that when a ceiling-mounted fan is used, an air outlet 61 needs to be opened on the ceiling 6.

[0040] The specific installation method of fan 3 is as follows: (Refer to...) Figure 6 and Figure 7 The top of the wall 5 is vertically upward, with a suspended ceiling 6 and a floor slab 7 installed in sequence. The fan 3 is installed on the suspended ceiling 6 and connected to the underfloor heating pipes in the upper floor with underfloor heating and air conditioning structure to reduce the use of pipes and optimize the pipe structure. Specifically, a heat transfer pipe 9 is installed between the fan 3 and the underfloor heating pipes. The heat transfer pipe 9 is connected to the branch pipe 13 to allow carbon dioxide to circulate in the heat transfer pipe 9, while part of the heat transfer pipe 9 is connected to the fan 3. It should be noted that the heat transfer pipe 9 in this embodiment is made of the same material as the underfloor heating pipe 1. When the fan 3 is working, it forms an airflow, which transfers the heat from the heat transfer pipe 9 to the ventilated floor 8 for heating. Correspondingly, the suspended ceiling 6 has an air outlet 61 that matches the fan 3, and the fan 3 is connected to the suspended ceiling 6 through the air outlet 61.

[0041] The implementation principle of Embodiment 1 of this application is as follows: the throttling valve 22 and the fan 3 in the floor with the underfloor heating and air conditioning structure are opened, so that carbon dioxide flows from the gas supply pipe 11 into each branch pipe 13, forming a heat transfer system with the branch pipe 13 as the first heat transfer body and the bottom plate as the second heat transfer body. The branch pipe 13 placed in the floor 4 transfers heat to the upper end of the bottom plate under the action of the reflective layer 42 and the heat storage layer 44, so that the indoor temperature rises, while the temperature of the carbon dioxide after heat exchange decreases and finally flows into the return pipe 12. During the heat transfer process, some carbon dioxide enters the heat transfer tube, while the airflow generated by the fan 3 carries the heat from the heat transfer tube to the ventilation floor. The heated airflow is output from the ceiling, making the heat more evenly distributed in the ventilation floor 8, thus raising the temperature in the ventilation floor 8. In this way, a floor heating and air conditioning structure can heat two floors, which helps to reduce energy consumption and reduce the construction cost of commercial buildings.

[0042] Example 2: The difference between this embodiment 2 and embodiment 1 is that both check valve 21 and throttle valve 22 are electronic expansion valves, and both check valve 21 and throttle valve 22 are controlled by a control panel.

[0043] The implementation principle of Embodiment 2 of this application is as follows: both the check valve 21 and the throttle valve 22 are selected from the same type of valve 2, which is conducive to precise control and facilitates the installation of valve 2 and subsequent replacement of valve 2.

[0044] Example 3: The difference between this embodiment 3 and embodiment 1 is that the heat storage layer 44 is made of a phase change material. As a preferred embodiment of this application, the phase change material in this embodiment 3 is paraffin wax.

[0045] The implementation principle of Embodiment 3 of this application is as follows: Paraffin wax can melt as the temperature rises, so that the part of the paraffin wax that is in direct contact with the branch pipe 13 can better cover the branch pipe 13, thereby improving the heat storage performance. The surface of the paraffin wax is smooth, which reduces the possibility of sand and cement scratching the branch pipe 13 compared with the mixture of pebbles, sand and cement, and is conducive to better protecting the branch pipe 13 and improving the stability of the operation of the branch pipe 13.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A floor with an underfloor heating and air conditioning structure, characterized in that, It includes a floor heating pipe (1) for transmitting carbon dioxide, a valve (2) and a floor (4), the floor heating pipe (1) being disposed in the floor (4) and capable of transferring heat to the floor (4), and the valve (2) being disposed on the floor heating pipe (1) and capable of regulating the flow rate of carbon dioxide in the floor heating pipe (1); The floor heating pipe (1) includes a gas supply pipe (11), a return pipe (12) and several branch pipes (13). One end of each of the several branch pipes (13) is connected to the return pipe (12), and the other end of each of the several branch pipes (13) is connected to the gas supply pipe (11).

2. A floor with underfloor heating and air conditioning structure according to claim 1, characterized in that, The valve (2) includes a check valve (21) and a throttle valve (22). The check valve (21) is connected to the outlet end (132) of the branch pipe (13), and the throttle valve (22) is connected to the inlet end (131) of the branch pipe (13).

3. A floor with underfloor heating and air conditioning structure according to claim 2, characterized in that, The valve (2) also includes an overflow valve (23), which is connected to the return pipe (12).

4. A floor with underfloor heating and air conditioning structure according to claim 3, characterized in that, Carbon dioxide enters the branch pipe (13) in the form of gas from the gas supply pipe (11), and flows out in the form of liquid from the return pipe (12) after passing through the overflow valve (23).

5. A floor with underfloor heating and air conditioning structure according to claim 3, characterized in that, The check valve (21) is any one of a check valve, a solenoid valve, an electronic expansion valve, or a one-way relief valve (23), and the relief valve (23) is any one of a check valve, a solenoid valve, or an electronic expansion valve.

6. A floor with underfloor heating and air conditioning structure according to claim 1, characterized in that, The gas supply pipe (11), the liquid return pipe (12), and several branch pipes (13) are all made of steel, copper, or alloy materials.

7. A floor with underfloor heating and air conditioning structure according to claim 1, characterized in that, It also includes a fan (3), which is placed on the floor (4) and connected to the underfloor heating pipe (1), and the fan (3) is used to transfer the heat of the underfloor heating pipe (1).

8. A floor with underfloor heating and air conditioning structure according to claim 1, characterized in that, The floor (4) includes a concrete slab (41), a reflective layer (42), a wire mesh (43), a heat storage layer (44), and a rock slab (45) laid in sequence. The branch pipe (13) is installed on the wire mesh (43) and abuts against the heat storage layer (44).

9. A floor with underfloor heating and air conditioning structure according to claim 8, characterized in that, The reflective layer (42) is made of aluminum foil or extruded insulation board with aluminum foil, and the heat storage layer (44) is made of a mixture of pebbles, sand and cement.

10. A commercial building, characterized in that, It includes several ventilation floors (8) and several floors with a floor heating and air conditioning structure as described in any one of claims 1-9, with the floor with the floor heating and air conditioning structure provided between two adjacent ventilation floors (8), and the fan (3) provided in each of the several ventilation floors (8).

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