A geothermal exchange device and a method of use in heating and cooling

Abstract

The present invention discloses a geothermal exchange device and a method of using the same in heating and cooling, aiming to provide a geothermal exchange device and a method of using the same. The device includes heat exchange pipes, the earth, a water pool which is underground and has an inlet, an outlet and a water level control device, as well as a blocking device for blocking the longitudinal flow of high-temperature water or low-temperature water. The cross-sectional areas of the water inlet and the water outlet are much smaller than the cross-sectional area of the water pool. The heat exchange pipes are arranged in the high-temperature water or low-temperature water in the water pool through brackets. Using the earth as the cold and heat source of the heat pump, in winter, the heat exchange tube bundle is connected in series with the evaporator of the heat pump to form a closed loop, and the water level control plate is adjusted to a state lower than the horizontal blocking plate, so that the heat exchange tube bundle absorbs heat from the earth through the upper-layer high-temperature water in the water pool for heating; in summer, the heat exchange tube bundle is connected in series with the condenser of the heat pump to form a closed loop, and the water level control plate is adjusted to a state higher than the horizontal blocking plate, so that the heat exchange tube bundle releases heat to the earth through the lower-layer low-temperature water in the water pool for cooling.

Description

Technical Field

[0001] The present invention relates to a heat exchange device, in particular to a geothermal exchange device and a method for its use in heating and cooling. Background Art

[0002] The earth is an ideal cold and heat source for heat pump heating and cooling (warm in winter and cool in summer), and the heat energy exchange device between the heat pump and the earth is a very important equipment. Chinese Patent Publication No. CN200943924Y, publication date September 5, 2007, the name of the invention-creation is "A ground energy air conditioner", this application discloses a ground energy air conditioner, and specifically discloses a ground energy (heat) exchange system, including a cold and heat exchanger 18, the ground 1, a sewage pool 19, the sewage pool 19 is arranged underground, and the cold and heat exchanger 18 is arranged in the flowing sewage in the sewage pool 19. Its disadvantages are that since the air conditioner needs to release a large amount of heat during refrigeration, for this ground energy "heat" exchange system to exchange enough heat, a large enough sewage flow rate is required, and the structure of the sewage pool 19 does not have the technical function of automatically stratifying the sewage. Therefore, a large amount of flowing sewage is in a turbulent state and cannot be automatically stratified according to temperature. In addition, the cold and heat exchanger 18 is not arranged in the low-temperature sewage layer, but in the sewage from the bottom layer to the top layer, and the average temperature of the sewage is high, which is not conducive to heat dissipation and the heat exchange efficiency is low. Summary of the Invention

[0003] The present invention absorbs the advantages of the existing ground energy exchange systems, overcomes their disadvantages, and provides a geothermal exchange device and a method for its use in heating and cooling.

[0004] To solve the above technical problem of too low heat exchange efficiency, the present invention adopts the following solution: A geothermal exchange device includes a heat exchange tube, the earth, and a water pool. The water pool is arranged underground, the water pool is provided with an inlet and an outlet, the cross-sectional areas of the inlet and the outlet of the water pool are much smaller than the cross-sectional area of the water pool, the water pool is provided with a water level control device for adjusting the water level height, and in front of the outlet, there is a blocking device (abbreviated as "blocking device") for blocking the longitudinal flow of the upper high-temperature water or the lower low-temperature water. The heat exchange tube is arranged in the upper high-temperature water or the lower low-temperature water in the water pool through a bracket.

[0005] The present invention can also be: The heat exchange tube is a heat exchange tube bundle, the heat exchange tube bundle is a bundle of metal materials, a permeable wall is arranged around the water pool, a permeable ground is arranged at the bottom of the water pool, the water level control device for adjusting the water level height is composed of an inlet, an outlet, and a water level control plate. The water level control plate is located at the outlet, and the blocking device is composed of a horizontal blocking plate and a water level control plate, and flowing water channels are respectively arranged above and below the horizontal blocking plate.

[0006] A method for using a geothermal exchange device of the present invention in heating and cooling is as follows: Using the earth as the cold and heat source of the heat pump. In winter, the heat exchange tube bundle of the geothermal exchange device is connected in series with the evaporator of the heat pump to form a closed loop, and the water level control plate is adjusted to a state lower than the horizontal baffle plate, so that the heat exchange tube bundle of the geothermal exchange device absorbs heat from the earth through the upper layer of high-temperature water in the pool for heating; in summer, the heat exchange tube bundle of the geothermal exchange device is connected in series with the condenser of the heat pump to form a closed loop, and the water level control plate is adjusted to a state higher than the horizontal baffle plate, so that the heat exchange tube bundle of the geothermal exchange device releases heat to the earth through the lower layer of low-temperature water in the pool for cooling.

[0007] Compared with the prior art, the advantages of the present invention are as follows: The water in the pool diffuses into the surrounding soil, which can improve the thermal conductivity of the soil and is beneficial to heat transfer in the soil. The water in the pool is static or slowly flowing, which is beneficial to the automatic stratification of water according to different temperatures and can also precipitate impurities in the water. The heat exchange tube bundle is arranged in the upper layer of high-temperature water, which is convenient for heat absorption in winter; on the contrary, it is convenient for heat dissipation in summer. Therefore, the geothermal exchange device of the present invention has high efficiency. In actual use, the configuration of the heat exchange area can be reduced, and the operating cost can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a half-sectional top view of the geothermal exchange device;

[0009] Figure 2 is a sectional view taken along line A-A of the high-temperature heat exchange of the geothermal exchange device;

[0010] Figure 3 is a sectional view taken along line A-A of the low-temperature heat exchange of the geothermal exchange device;

[0011] Figure 4 is a sectional view taken along line B-B of the geothermal exchange device;

[0012] Figure 5 is a schematic diagram of the usage method of the geothermal exchange device for winter heating;

[0013] Figure 6 is a schematic diagram of the usage method of the geothermal exchange device for summer cooling.

[0014] In the figure: water inlet 1, water outlet 2, sewer 3, circulating water outlet 4, circulating water collector 5, heat exchange tube bundle 6, circulating water distributor 7, circulating water inlet 8, heat exchange tube bundle support 9, horizontal baffle plate 10, water-permeable material 11, cover plate 12, water 13, soil 14, water level control plate 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0016] In Figure 2 、Figure 3 In it, a pool made of water-permeable material 11 is arranged in soil 14. The pool is provided with a water inlet 1 and a water outlet 2. A sewer 3 is arranged outside the water outlet 2. A water level control board 15 is arranged at the water outlet 2. A transverse baffle 10 is arranged in front of the water outlet 2. Flow channels are arranged above and below the transverse baffle 10. The heat exchange tube bundle 6 is fixed in the pool by a heat exchange tube bundle support 9. One end of the heat exchange tube bundle 6 is connected to a circulating water inlet 8 through a circulating water distributor 7, and the other end of the heat exchange tube bundle 6 is connected to a circulating water outlet 4 through a circulating water collector 5. A cover plate 12 is arranged above the pool. The height of water 13 is controlled by the water level control board 15, and the water level just submerges the heat exchange tube bundle 6 or submerges the transverse baffle 10.

[0017] Example 1:

[0018] In Figure 5 it, the heat pump consists of an evaporator, a compressor, a condenser and a throttle valve. During the winter heating cycle, one end of the heat exchange tube bundle successively passes through a circulating water collector, a circulating water outlet, a circulating water pump 2, a conversion device 2, an evaporator, a conversion device 1, a circulating water inlet 8, a circulating water distributor 7 and returns to the other end of the heat exchange tube bundle to form a closed loop. The heat exchange tube bundle is made of stainless steel material. One end of the terminal device successively passes through a circulating water pump 1, a conversion device 1, a condenser, a conversion device 2 and returns to the other end of the terminal device to form a closed loop. The water level in the pool is controlled by the water level control board, and the water level just submerges the heat exchange tube bundle. The periphery and bottom of the pool are made of water-permeable bricks.

[0019] Example 2:

[0020] In Figure 6 it, the heat pump consists of an evaporator, a compressor, a condenser and a throttle valve. During the summer refrigeration cycle, one end of the heat exchange tube bundle successively passes through a circulating water collector, a circulating water outlet, a circulating water pump 2, a conversion device 2, a condenser, a conversion device 1, a circulating water inlet 8, a circulating water distributor 7 and returns to the other end of the heat exchange tube bundle to form a closed loop. The heat exchange tube bundle is made of stainless steel material. One end of the terminal device successively passes through a circulating water pump 1, a conversion device 1, an evaporator, a conversion device 2 and returns to the other end of the terminal device to form a closed loop. The water level in the pool is controlled by the water level control board, and the water level just submerges the transverse baffle. The periphery and bottom of the pool are made of water-permeable bricks.

Claims

1. A geothermal heat exchange device, comprising a heat exchange tube, the earth, and a water pool, wherein the water pool is arranged underground and is provided with a water inlet and a water outlet, wherein: The cross-sectional areas of the water inlet and the water outlet are much smaller than the cross-sectional area of the water pool. The water pool is provided with a water level control device for adjusting the water level. A blocking device is provided in front of the water outlet to block the longitudinal flow of the upper high-temperature water or the lower low-temperature water. The heat exchange tube is arranged in the upper high-temperature water or the lower low-temperature water in the water pool through a bracket.

2. A geothermal heat exchange device according to claim 1, characterized in that: The heat exchange tubes are heat exchange tube bundles, and the heat exchange tube bundles are made of metal materials.

3. A geothermal heat exchange device according to claim 2, characterized in that: A water seepage wall is arranged around the water pool, and a water seepage ground is arranged at the bottom of the water pool.

4. A geothermal heat exchange device according to claim 3, characterized in that: The water level control device for adjusting the water level height consists of a water inlet, a water outlet and a water level control plate, and the water level control plate is located at the water outlet.

5. A geothermal heat exchange device according to claim 4, characterized in that: The blocking device is composed of a transverse blocking plate and a water level control plate, and water flow channels are respectively provided on the upper and lower sides of the transverse blocking plate.

6. A method for using the geothermal heat exchange device according to claim 5 in heating and cooling, characterized in that: The earth is used as the heat source of the heat pump. In winter, the heat exchange tube bundle of the geothermal exchange device is connected in series with the evaporator of the heat pump to form a closed loop, and the water level control plate is adjusted to a state lower than the transverse baffle plate, so that the heat exchange tube bundle of the geothermal exchange device absorbs heat from the earth through the upper high-temperature water of the water pool for heating; in summer, the heat exchange tube bundle of the geothermal exchange device is connected in series with the condenser of the heat pump to form a closed loop, and the water level control plate is adjusted to a state higher than the transverse baffle plate, so that the heat exchange tube bundle of the geothermal exchange device releases heat to the earth through the lower low-temperature water of the water pool for cooling.

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