A ground cooling and heating system

Abstract

The utility model discloses a ground cold and warm system belongs to circulating floor heating technical field, and its technical scheme main points are: including inlet pipe, water distributor, water collector, return pipe, ground pipe, temperature controller, control valve and temperature control flow valve, and inlet pipe is connected with water distributor, and the both ends of ground pipe are connected with water distributor and water collector respectively, and return pipe includes main channel and bypass channel, and the both ends of bypass channel are connected with the inlet end of main channel and the outlet end of main channel respectively, and the inlet end of main channel and the outlet end of main channel are connected with water collector and external water storage unit respectively, and control valve controls the on-off of main channel, and temperature control flow valve is used for controlling the on-off of bypass channel, when the water flow temperature that flows through temperature control flow valve is lower than predetermined temperature, temperature control flow valve will cut off bypass channel, and this cold and warm system can avoid the situation that ground condensation appears because of too low water temperature when using in summer.

Description

Technical Field

[0001] This utility model belongs to the field of circulating floor heating technology, and specifically relates to a floor heating and cooling system. Background Technology

[0002] Energy issues have become a global problem. With social development, people have higher and higher requirements for living comfort, and energy consumption is also increasing. Heat pumps, as an important energy-saving technology, have been widely used in life. Underfloor radiant heating and cooling systems involve pre-burying pipes under the floor or underfloor heating system. When cooling is needed in summer, cold water circulates in the pipes, and when heating is needed in winter, hot water circulates in the pipes. The floor then acts as the entire radiator, transferring the cold or hot air mainly through radiation, thereby achieving the purpose of cooling or heating.

[0003] Chinese Patent No. CN206846871U discloses a comprehensive heat pump water heater for floor radiant heating and cooling, including an insulated water storage tank. One side of the insulated water storage tank is provided with a water supply pipe and a water inlet pipe, and the other side of the insulated water storage tank is connected to a heat exchange box through an inlet pipe and an outlet pipe. A water pump is installed at the connection between the inlet pipe and the heat exchange box, and a condenser is fixed inside the heat exchange box. One end of the condenser is connected to the first outlet of a first three-way valve, and the second outlet of the first three-way valve is connected to one end of a circulation pump through a water pipe. The other end of the circulation pump is connected to one end of a floor heat exchanger fixed under the floor.

[0004] The above technical solution has at least the following drawbacks: when the device is used in summer, condensation may easily occur on the ground due to the low water temperature. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a ground heating and cooling system. The technical problem to be solved by this utility model is: how to avoid condensation on the ground due to excessively low water temperature during summer use.

[0006] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a floor heating and cooling system, including an inlet pipe, a distributor, a collector, a return pipe, a ground pipe, a thermostat, a control valve, and a temperature-controlled flow valve. The inlet pipe is connected to the distributor, and the two ends of the ground pipe are respectively connected to the distributor and the collector. The return pipe includes a main channel and a bypass channel. The two ends of the bypass channel are respectively connected to the inlet and outlet of the main channel. The inlet and outlet of the main channel are respectively connected to the collector and an external water storage unit. The control valve controls the opening and closing of the main channel, and the temperature-controlled flow valve controls the opening and closing of the bypass channel. When the water temperature flowing through the temperature-controlled flow valve is lower than a predetermined temperature, the temperature-controlled flow valve shuts off the bypass channel.

[0007] In the aforementioned floor heating and cooling system, the system further includes a temperature sensor and an electric valve. The temperature sensor is used to detect the water temperature in the return pipe and transmit it to the thermostat. The electric valve is used to control the on / off state of the heating and cooling system. When the temperature sensor detects that the water temperature in the bypass channel is lower than a preset temperature, the thermostat controls the electric valve to cut off the flow of the heating and cooling system.

[0008] In one of the above-mentioned floor heating and cooling systems, the electric valve is installed on the return water pipe, and the electric valve is used to control the opening and closing of the bypass channel.

[0009] In one of the above-mentioned floor heating and cooling systems, the electric valve is installed on the water inlet pipe, and the electric valve is used to control the opening and closing of the water inlet pipe.

[0010] In the aforementioned floor heating and cooling system, the temperature-controlled flow valve includes a valve body, a temperature bulb, a positioning sleeve, a plug, a first return spring, and a second return spring. A water inlet is provided within the valve body, connecting the inlet and outlet of the valve body. The positioning sleeve and the plug are slidably disposed within the valve body. The plug blocks the water inlet. The temperature bulb pushes the positioning sleeve to slide, thereby causing the positioning sleeve to push the plug away from the water inlet. The first return spring causes the plug to slide back to its original position, re-blocking the water inlet. The second return spring causes the positioning sleeve to slide back to its original position.

[0011] In one of the above-mentioned floor heating and cooling systems, a locking cap is installed inside the valve body, which is used to limit the movement of the heating element along its axial direction.

[0012] In one of the above-mentioned floor heating and cooling systems, the heating element passes through the locking cap, and the heating element has a positioning flange, the end face of which abuts against the end face of the locking cap.

[0013] In the aforementioned floor heating and cooling system, a valve cap is installed on the valve body, and a limiting flange is provided on the valve cap. One end of the return spring abuts against or is connected to the end face of the limiting flange, and the other end of the return spring abuts against or is connected to the end face of the plug.

[0014] In the aforementioned floor heating and cooling system, the positioning sleeve is fitted onto the end of the heating element, the positioning sleeve has a second limiting flange, the valve body is provided with a limiting step, one end of the second return spring abuts or connects to the step surface of the limiting step, and the other end of the second return spring abuts or connects to the end face of the second limiting flange.

[0015] In one of the above-mentioned floor heating and cooling systems, the lock cap is provided with a water passage hole for water to flow through.

[0016] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0017] Water flows in from the inlet pipe, then sequentially through the distributor, ground pipe, and collector, before flowing into the main channel of the return pipe. A portion of the water flows directly through the main channel to the external storage unit, while the remainder flows through the bypass channel to the outlet of the main channel, ultimately also flowing to the external storage unit. In summer, the user controls the main channel to disconnect via a control valve, preventing water from flowing to the external storage unit. At this time, the water flows through the bypass channel to the outlet of the main channel and finally into the external storage unit. When the water temperature flowing through the temperature-controlled flow valve is lower than the preset temperature, the valve closes, thus isolating the bypass channel and preventing water from flowing through it. This stops the water flow in the heating and cooling system, preventing further temperature drops due to continuous cold water injection and thus preventing condensation on the floor caused by excessively low water temperature. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0019] Figure 2 This is a cross-sectional view of the temperature-controlled flow valve in Example 1;

[0020] Figure 3 This is a schematic diagram of the structure of Example 2.

[0021] Attached reference numerals: 1. Inlet pipe; 2. Diverter; 3. Collector; 4. Return pipe; 41. Main channel; 42. Bypass channel; 5. Ground pipe; 6. Thermostat; 7. Control valve; 8. Thermostatic flow valve; 81. Valve body; 82. Temperature sensor; 83. Positioning sleeve; 84. Plug; 85. Return spring one; 86. Return spring two; 87. Lock cap; 88. Valve cap; 9. Temperature sensor; 10. Electric valve; 11. Water inlet; 12. Positioning flange; 13. Limiting flange one; 14. Limiting flange two; 15. Limiting step; 16. Water passage hole. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example 1:

[0023] A type of floor heating and cooling system, such as Figures 1 to 2 As shown, it includes an inlet pipe 1, a distributor 2, a collector 3, a return pipe 4, a ground pipe 5, a thermostat 6, a control valve 7, a temperature-controlled flow valve 8, a temperature sensor 9, and an electric valve 10.

[0024] Water inlet pipe 1 is connected to an external water supply unit, continuously injecting hot water in winter to increase the water temperature in the heating and cooling system and achieve a heating effect, while continuously injecting cold water in summer to decrease the water temperature in the heating and cooling system and achieve a cooling effect.

[0025] The inlet pipe 1 is connected to the distributor 2. The two ends of the ground pipe 5 are connected to the distributor 2 and the collector 3 respectively. The return pipe 4 includes a main channel 41 and a bypass channel 42. The two ends of the bypass channel 42 are connected to the inlet end and the outlet end of the main channel 41 respectively. The inlet end and the outlet end of the main channel 41 are connected to the collector 3 and the external water storage unit respectively. The external water storage unit is such as a water tank.

[0026] Water flows in from the inlet pipe 1, then flows through the distributor 2, the ground pipe 5 and the collector 3 in sequence, and then flows into the main channel 41 of the return pipe 4. Part of the water flows directly through the main channel 41 to the external water storage unit, and the rest flows through the bypass channel 42 to the outlet end of the main channel 41, and finally flows to the external water storage unit as well.

[0027] Control valve 7 controls the opening and closing of main channel 41. In this embodiment, control valve 7 is a ball valve. In other cases, control valve 7 can also be a gate valve.

[0028] The temperature control flow valve 8 is used to control the opening and closing of the bypass channel 42. When the temperature of the water flowing through the temperature control flow valve 8 is lower than the predetermined temperature, the temperature control flow valve 8 will shut off the bypass channel 42.

[0029] Specifically, the temperature control flow valve 8 includes a valve body 81, a temperature bulb 82, a positioning sleeve 83, a plug 84, a first return spring 85, and a second return spring 86. The valve body 81 is provided with a water inlet 11, which is used to connect the water inlet end of the valve body 81 with the water outlet end of the valve body 81. The positioning sleeve 83 and the plug 84 are both slidably disposed in the valve body 81. The plug 84 is used to block the water inlet 11. That is, by controlling whether the plug 84 blocks the water inlet 11, the opening or closing of the temperature control flow valve 8 is controlled.

[0030] A locking cap 87 is installed inside the valve body 81. The locking cap 87 is threadedly connected to the valve body 81. The locking cap 87 is used to limit the movement of the temperature bulb 82 along the axial direction. Specifically, the temperature bulb 82 passes through the locking cap 87. The temperature bulb 82 has a positioning flange 12. The end face of the positioning flange 12 abuts against the end face of the locking cap 87. That is, the abutting action of the two realizes the limitation of the temperature bulb 82 along the axial direction, thereby ensuring the stable position of the temperature bulb 82 inside the valve body 81.

[0031] Furthermore, the lock cap 87 is provided with water passage holes 16 for water to flow through, that is, the water flowing through the valve body 81 all passes through the water passage holes 16. Preferably, there are several water passage holes 16 and they are evenly distributed along the circumference of the lock cap 87.

[0032] A valve cap 88 is installed on the valve body 81. The valve cap 88 is threadedly connected to the valve body 81. A limiting flange 13 is provided on the valve cap 88. One end of the return spring 85 abuts or is connected to the end face of the limiting flange 13, and the other end of the return spring 85 abuts or is connected to the end face of the plug 84, thereby ensuring the stability of the return spring 85.

[0033] The positioning sleeve 83 is fitted onto the end of the temperature bulb 82. The positioning sleeve 83 has a limiting flange 14. A limiting step 15 is provided inside the valve body 81. One end of the return spring 86 abuts or connects with the step surface of the limiting step 15, and the other end of the return spring 86 abuts or connects with the end face of the limiting flange 14, thereby ensuring the stability of the return spring 86.

[0034] The heating element 82 can push the positioning sleeve 83 to slide, thereby causing the positioning sleeve 83 to push the plug 84 away from the water inlet 11. Specifically, the heating element 82 expands and contracts with temperature. When the temperature is high, the heating element 82 expands and pushes the positioning sleeve 83 to slide. The limiting flange 14 on the positioning sleeve 83, together with the limiting step 15 in the valve body 81, squeezes the reset spring 86. The positioning sleeve 83 pushes the plug 84 away from the water inlet 11. The plug 84, together with the limiting flange 13 on the valve cap 88, squeezes the reset spring 85. At this time, the water inlet 11 is in the open state. Conversely, when the temperature is low, the heating element 82 contracts. At this time, the spring restoring force of the reset spring 85 pushes the plug 84 to slide back to reseal the water inlet 11. The elastic restoring force of the reset spring 86 pushes the positioning sleeve 83 to slide back to its original position.

[0035] The temperature sensor 9 is used to detect the water temperature in the return pipe 4 and transmit it to the thermostat 6. In this embodiment, the temperature sensor 9 is installed on the bypass channel 42 of the return pipe 4. The temperature sensor 9 detects the water temperature in the bypass channel 42 and is located behind the temperature control flow valve 8 along the water flow direction. Alternatively, the temperature sensor 9 is located in front of the temperature control flow valve 8 along the water flow direction.

[0036] The electric valve 10 is used to control the on / off state of the heating and cooling system. When the temperature sensor 9 detects that the water temperature in the bypass channel 42 is lower than the preset temperature, the thermostat 6 controls the electric valve 10 to cut off the passage of the heating and cooling system. In this embodiment, the electric valve 10 is installed on the return water pipe 4 and is used to control the on / off state of the bypass channel 42.

[0037] It should be noted that when the temperature control flow valve 8 malfunctions, and the temperature sensor 9 detects that the water temperature in the bypass channel 42 is lower than the preset temperature, the thermostat 6 controls the electric valve 10 to close, thereby isolating the bypass channel 42.

[0038] It is important to note that during summer use, the user must first disconnect the main channel 41 via control valve 7 to prevent water from flowing from the main channel 41 to the external water storage unit. The water should then flow through the bypass channel 42 to the outlet of the main channel 41 before entering the external water storage unit. When the water temperature flowing through the temperature-controlled flow valve 8 is lower than the preset temperature, the valve closes, thus isolating the bypass channel 42 and preventing water from flowing through it. If the temperature-controlled flow valve 8 malfunctions, the temperature sensor 9 detects that the water temperature in the bypass channel 42 is lower than the preset temperature, and the thermostat 6 controls the electric valve 10 to close, similarly isolating the bypass channel 42. At this point, the water flow in the heating and cooling system stops, preventing further temperature drops due to continuous injection of cold water and thus preventing condensation on the floor caused by excessively low water temperature. During winter use, control valve 7 remains open normally. Example 2:

[0039] The difference between Example 2 and Example 1 is that, as Figure 3 As shown, the electric valve 10 is installed on the water inlet pipe 1. The electric valve 10 is used to control the opening and closing of the water inlet pipe 1, thereby controlling the opening and closing of the entire heating and cooling system. It should be noted that when the temperature control flow valve 8 malfunctions, when the temperature sensor 9 detects that the water temperature in the bypass channel 42 is lower than the preset temperature, the thermostat 6 controls the electric valve 10 to close, controlling the water inlet pipe 1 to disconnect, so that water cannot pass through the water inlet pipe 1. This avoids the continuous injection of cold water, which would cause the water temperature in the heating and cooling system to drop further, thereby preventing the problem of condensation on the ground caused by the water temperature being too low.

[0040] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A floor heating and cooling system, characterized in that: The system includes an inlet pipe (1), a distributor (2), a collector (3), a return pipe (4), a ground pipe (5), a thermostat (6), a control valve (7), and a temperature-controlled flow valve (8). The inlet pipe (1) is connected to the distributor (2). The two ends of the ground pipe (5) are connected to the distributor (2) and the collector (3), respectively. The return pipe (4) includes a main channel (41) and a bypass channel (42). The two ends of the bypass channel (42) are connected to the inlet of the main channel (41). The inlet end is connected to the outlet end of the main channel (41). The inlet end and the outlet end of the main channel (41) are respectively connected to the water collector (3) and the external water storage unit. The control valve (7) controls the opening and closing of the main channel (41). The temperature control flow valve (8) is used to control the opening and closing of the bypass channel (42). When the water temperature flowing through the temperature control flow valve (8) is lower than the predetermined temperature, the temperature control flow valve (8) will disconnect the bypass channel (42).

2. The floor heating and cooling system according to claim 1, characterized in that: The heating and cooling system also includes a temperature sensor (9) and an electric valve (10). The temperature sensor (9) is used to detect the water temperature in the return pipe (4) and transmit it to the thermostat (6). The electric valve (10) is used to control the on / off state of the heating and cooling system. When the temperature sensor (9) detects that the water temperature in the bypass channel (42) is lower than the preset temperature, the thermostat (6) controls the electric valve (10) to cut off the passage of the heating and cooling system.

3. A floor heating and cooling system according to claim 2, characterized in that: The electric valve (10) is installed on the return water pipe (4) and is used to control the opening and closing of the bypass channel (42).

4. A floor heating and cooling system according to claim 2, characterized in that: The electric valve (10) is installed on the water inlet pipe (1) and is used to control the opening and closing of the water inlet pipe (1).

5. A floor heating and cooling system according to any one of claims 1, 2, 3, or 4, characterized in that: The temperature-controlled flow valve (8) includes a valve body (81), a temperature bulb (82), a positioning sleeve (83), a plug (84), a first reset spring (85), and a second reset spring (86). The valve body (81) is provided with a water inlet (11), which is used to connect the water inlet end of the valve body (81) with the water outlet end of the valve body (81). The positioning sleeve (83) and the plug (84) are both slidably disposed in the valve body (81). The plug (84) is used to block the water inlet (11). The temperature bulb (82) can push the positioning sleeve (83) to slide, thereby causing the positioning sleeve (83) to push the plug (84) away from the water inlet (11). The first reset spring (85) is used to make the plug (84) slide back to re-seal the water inlet (11). The second reset spring (86) is used to make the positioning sleeve (83) slide back to reset.

6. A floor heating and cooling system according to claim 5, characterized in that: A locking cap (87) is installed inside the valve body (81), and the locking cap (87) is used to limit the movement of the temperature bulb (82) along the axial direction.

7. A floor heating and cooling system according to claim 6, characterized in that: The warming bag (82) passes through the lock cap (87), and the warming bag (82) has a positioning flange (12), the end face of which abuts against the end face of the lock cap (87).

8. A floor heating and cooling system according to claim 5, characterized in that: A valve cap (88) is installed on the valve body (81). A limiting flange (13) is provided on the valve cap (88). One end of the reset spring (85) abuts or is connected to the end face of the limiting flange (13). The other end of the reset spring (85) abuts or is connected to the end face of the plug (84).

9. A floor heating and cooling system according to claim 5, characterized in that: The positioning sleeve (83) is fitted onto the end of the temperature bulb (82). The positioning sleeve (83) has a limiting flange (14). A limiting step (15) is provided inside the valve body (81). One end of the reset spring (86) abuts or connects to the step surface of the limiting step (15). The other end of the reset spring (86) abuts or connects to the end face of the limiting flange (14).

10. A floor heating and cooling system according to claim 7, characterized in that: The lock cap (87) is provided with a water passage hole (16) for water to flow through.

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