CN105546696A - Terrestrial heat air conditioning system - Google Patents

Abstract

The invention provides a geothermal air-conditioning system, which includes a first high-level tank, a well inlet pipe, a heat exchange pipe, a well outlet pipe and a second high-level tank connected in sequence, and also includes an underground water storage tank, a circulating water pump and a circulating pipe. The heat pipe is located in the underground water storage tank, the pipe body of the well inlet pipe and the well outlet pipe are both located under the first high-level barrel or the second high-level barrel, and the well outlet pipe is provided with an indoor replacement pipe. Heater, the circulating water pump is located in the second high level bucket, one end of the circulation pipe is connected to the outlet of the circulating water pump, and the other end is located in the first high level bucket. When the circulating water pump pumps the liquid in the second high-level tank into the first high-level tank, under the action of the liquid pressure difference, the liquid in the first high-level tank will flow into the second high-level tank along the corresponding pipeline to realize For the circulating flow of liquid, only the energy consumption of the circulating water pump is used in the whole circulating process, which is more energy-saving; at the same time, because the geothermal energy is used, it is more environmentally friendly.

Description

A geothermal air conditioning system

technical field

The invention relates to an air-conditioning system, in particular to a geothermal air-conditioning system.

Background technique

With the improvement of people's living standards, air conditioners have gradually become an indispensable electrical appliance in people's lives. At present, most air conditioners use electric energy for cooling or heating, which imposes a heavy burden on the power grid and is not environmentally friendly.

Chinese invention patent application ZL201410026111.X discloses a ground-source central air-conditioning system, including an indoor cooling device, a user circulation pump, a screw unit, a water source circulation pump, and a geothermal energy collection device with circulation in the same well. The pipe is connected to the water inlet end of the screw unit, the water outlet end of the screw unit is connected to the indoor cooling device through the water supply pipe, the return water end of the indoor cooling device is connected to the screw unit through the return pipe and the user circulation pump, and the return water end of the screw unit is connected through the return pipe. The water pipe and the water source circulation pump are connected with the return pipe of the same well circulation geothermal energy collection device. The ground-source central air-conditioning system uses geothermal instead of electric energy, which is more environmentally friendly, but the circulation of water in each pipeline of the ground-source central air-conditioning system needs to be driven by the water source circulation pump and the user circulation pump, and the screw unit also needs to be driven by electric energy. The power consumption is relatively large, and there is still room for further improvement.

In view of this, the applicant conducted in-depth research on the structure of the air-conditioning system using geothermal heat, and this case arose.

Contents of the invention

The object of the present invention is to provide an energy-saving and environment-friendly geothermal air-conditioning system.

In order to achieve the above object, the present invention adopts the following technical solutions:

A geothermal air-conditioning system, including a first high-level tank, a well inlet pipe, a heat exchange pipe, a well outlet pipe and a second high-level tank connected in sequence, and also includes an underground water storage tank, a circulating water pump and a circulation pipe, and the heat exchange pipe is located at In the underground storage tank, the first high-level barrel and the second high-level barrel are located on the same level, and the pipe bodies of the well inlet pipe and the well outlet pipe are both located in the first high-level barrel or the second high-level barrel. Below the second high-level tank, the well outlet pipe is provided with an indoor heat exchanger, the circulating water pump is located in the second high-level tank, one end of the circulating pipe is connected to the outlet of the circulating water pump, and the other end is located in the second high-level tank. In the first high level bucket.

With the above technical solution, by setting the first high-level tank, the second high-level tank and the circulating water pump, when the circulating water pump pumps the liquid in the second high-level tank into the first high-level tank, under the action of the liquid pressure difference, the first The liquid in the high-level tank will follow the corresponding pipeline flow channel into the second high-level tank to realize the circulation of the liquid. The whole circulation process only consumes energy of the circulating water pump, which is more energy-saving; at the same time, during this circulation process, the liquid in the pipeline is in the When passing through the heat exchange pipe, it will absorb underground heating or cooling air, and then be released in the indoor heat exchanger to provide heating or cooling for the room. Because it uses geothermal energy, it is more environmentally friendly.

As an improvement of the present invention, the pipe diameter of the well entry pipe is larger than the pipe diameter of the well exit pipe. Through the above improvements, it is ensured that the liquid in the well outlet pipe has sufficient pressure to flow into the second high-level barrel.

As an improvement of the present invention, the underground water storage pool is located six meters below the ground. Through the above improvements, it is ensured that there is sufficient geothermal energy in the reservoir.

As an improvement of the present invention, the heat exchange pipe is in a continuous S-shape or in a spiral shape. Through the above improvements, the contact area between the heat exchange pipe and the water storage tank is increased to facilitate heat exchange.

As an improvement of the present invention, both the well inlet pipe and the well outlet pipe are thermal insulation pipes, and the heat exchange pipes are metal heat conduction pipes. Through the above improvements, heat loss in the pipeline is effectively prevented.

As an improvement of the present invention, there are multiple indoor heat exchangers, and multiple indoor heat exchangers are connected in series on the well outlet pipe. Through the above improvements, the pressure of the liquid in the well outlet pipe is relatively high, which is beneficial to the flow of the liquid in the pipe.

As another improvement of the present invention, there are multiple indoor heat exchangers, and multiple indoor heat exchangers are connected in parallel on the well outlet pipe. Through the above improvements, it is ensured that the cooling or heating effects of each heat exchanger are the same.

Description of drawings

Fig. 1 is a structural schematic diagram of the geothermal air-conditioning system of the present invention.

The corresponding marks in the figure are as follows:

10-the first high level barrel; 20-well inlet pipe;

30-heat exchange pipe; 40-well pipe;

50-the second high-level barrel; 60-underground storage tank;

70-circulating water pump; 80-circulating pipe;

90 - Indoor heat exchanger.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the geothermal air-conditioning system provided by this embodiment includes the first high-level barrel 10, the well inlet pipe 20, the heat exchange pipe 30, the well-outlet pipe 40, and the second high-level barrel 50 connected in sequence, and also includes underground water storage Pond 60, circulating water pump 70 and circulation pipe 80, the first high level bucket 10 and the second high level bucket 50 are preferably sealed buckets, prevent the liquid in the bucket from being dissipated in the air, and the underground storage tank 60 can be open type, it can also be closed, in this embodiment, the underground reservoir 60 is an open well pool, the water in the pool is well water, so the water in the underground reservoir 60 can also be used as industrial or domestic water.

The heat exchange pipe 30 is located in the underground storage tank 60 and is used for exchanging heat with the water in the underground storage tank 60 . The heat exchange pipe 30 is preferably a metal heat conduction pipe, preferably a metal heat conduction pipe with high corrosion resistance and high heat transfer coefficient. The specific type of the heat exchange pipe 30 can be selected from existing metal heat conduction pipes, and will not be detailed here. stated. In addition, the heat exchange pipe 30 is in a continuous S-shape or in a spiral shape, which can increase the contact area between the heat exchange pipe 30 and the water in the underground storage tank 60 and facilitate heat exchange.

The underground storage tank 60 is located at a position below six meters above the ground. The specific location needs to be determined according to the geology, climate and local actual environment where the underground storage tank 60 is located. Of course, the underground storage tank 60 needs to be located in a place with sufficient underground water sources. place for heat exchange with the help of groundwater sources. It should be noted that the depth of the underground storage tank 60 is preferably the same as that of a conventional domestic water well. If the underground storage tank 60 is too shallow, the water temperature in the pool will vary greatly with the seasons, making it difficult to achieve warm winter and summer. Cooling effect will affect the cooling or heating effect of the geothermal air-conditioning system; if the underground reservoir 60 is too deep, the cost of drilling the well will be too high, and the cooling or heating effect will not be significantly improved, because when the reservoir 60 reaches When the depth of domestic water well is reached, the water temperature in the pool tends to be constant.

The first high-level bucket 10 and the second high-level bucket 50 are located on the same level, and the first high-level bucket 10 and the second high-level bucket 50 are located above other parts of the geothermal air-conditioning system, that is, the well inlet pipe 20 and the well outlet pipe 40. The tube bodies are all located below the first high level barrel 10 or the second high level barrel 50 . In actual use, the first high-level bucket 10 and the second high-level bucket 50 can be arranged on the roof of a building, and there is no need for an additional support to place the first high-level bucket 10 and the second high-level bucket 50 .

Before use, the first high-level tank 10 should be filled with a liquid as a heat-conducting medium. The liquid preferably has a good thermal conductivity. The specific liquid can be selected according to actual needs, such as using water as a heat-conducting medium. After the liquid is poured into the first high level barrel 10, it will flow into the second high level barrel 50 sequentially along the well inlet pipe 20, the heat exchange pipe 30 and the well outlet pipe 40 under the action of hydraulic pressure, when the second high level barrel 50 There is also a certain amount of liquid, and after the liquid level in the first high-level tank 10 is equal to that in the second high-level tank 50 , stop pouring liquid into the first high-level tank 10 .

The circulating water pump 70 is located in the second high level bucket 50 and soaked in the liquid of the second high level bucket 50 . One end of the circulation pipe 80 is connected to the outlet of the circulating water pump 70 , and the other end is located in the first high level bucket 10 . When the circulating water pump 70 pumps the liquid in the second high-level tank 50 into the first high-level tank 10, under the action of the pressure difference, the liquid in the first high-level tank 10 will follow the well inlet pipe 20 and the heat exchange pipe in sequence. 30 and well outlet pipe 40 flow into the second high level barrel 50 to form a flow cycle.

An indoor heat exchanger 90 is arranged on the outlet pipe 40, and the indoor heat exchanger 90 can be an indoor unit used in a conventional air conditioner, and its specific structure will not be described in detail here. There can be only one or two indoor heat exchangers 90, or there can be multiple ones. When there are multiple indoor heat exchangers 90, multiple indoor heat exchangers 90 can be connected in series on the well outlet pipe 40, or can be connected in parallel on the well outlet pipe. 40 on. The advantage of multiple indoor heat exchangers 90 connected in series is that only one well outlet pipe 40 is needed, and the pressure inside the pipe is relatively stable. The disadvantage is that the initial cooling or heating effect of the indoor heat exchanger 90 near the second high-level barrel 50 is relatively poor; The advantage of multiple indoor heat exchangers 90 being connected in parallel is that the cooling or heating effects of each indoor heat exchanger 90 are not much different. The disadvantage is that the well outlet pipe 40 needs to have multiple branch pipes, and the liquid pressure at the junction of the branch pipes of the well outlet pipe 40 and the main pipe. There will be a sudden change, which will make the pressure in the outlet pipe 40 unstable and affect the cooling or heating effect. In this embodiment, there are multiple indoor heat exchangers 90, and the multiple indoor heat exchangers 90 are connected in series to each other on the well outlet pipe 40. Although the initial cooling or heating effect of some indoor heat exchangers 90 is relatively poor in this connection method, But the temperature of the liquid in the well outlet pipe 40 will tend to be consistent after long-term operation.

Preferably, in this embodiment, the pipe diameter of the well inlet pipe 20 is larger than the pipe diameter of the well exit pipe 40, so that under hydraulic pressure, the liquid flow rate in the well exit pipe 40 will be greater than the liquid flow rate in the well entry pipe 20, which can Continuously provide cooling or heating for the indoor heat exchanger 90 . In addition, both the well inlet pipe 20 and the well outlet pipe 40 are thermal insulation pipes, which can effectively prevent heat loss in the pipes.

The present invention has been described in detail above in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited to the above-mentioned embodiments. Those skilled in the art can make various modifications to the present invention according to the prior art, such as adding The liquid is changed to gas, and the air pump is used to replace the circulating water pump 70 in the above embodiment, etc., all of which belong to the protection scope of the present invention.

Claims (7)

1. a geothermal air conditioning system, it is characterized in that, comprise the first high-order bucket connected successively, enter well casing, heat exchange pipeline, go out well casing and the second high-order bucket, also comprise underground conservation pool, water circulating pump and circulation pipe, described heat exchange pipeline is positioned at described underground conservation pool, described first high-order bucket and described second high-order bucket are positioned in same level, and described in enter well casing and described go out the pipe shaft of well casing be all positioned at the below of described first high-order bucket or described second high-order bucket, describedly go out well casing is provided with indoor heat exchanger, described water circulating pump is positioned at described second high-order bucket, one end of described circulation pipe is connected with described recirculated water delivery side of pump, the other end is positioned at described first high-order bucket.

2. geothermal air conditioning system as claimed in claim 1, is characterized in that, described in enter well casing caliber be greater than described in go out the caliber of well casing.

3. geothermal air conditioning system as claimed in claim 1, it is characterized in that, described underground conservation pool is positioned at the position on less than six meters, ground.

4. geothermal air conditioning system as claimed in claim 1, is characterized in that, described heat exchange pipeline be continuous print S shape or in the shape of a spiral around.

5. geothermal air conditioning system as claimed in claim 1, is characterized in that, described in enter well casing and described go out well casing be all thermal insulation pipe, described heat exchange pipeline is metal heat-conducting pipeline.

6. the geothermal air conditioning system as described in claim arbitrary in claim 1-5, is characterized in that, described indoor heat exchanger has multiple, goes out on well casing described in multiple described indoor heat exchanger is connected on.

7. the geothermal air conditioning system as described in claim arbitrary in claim 1-5, is characterized in that, described indoor heat exchanger has multiple, goes out on well casing described in multiple described indoor heat exchanger is connected in parallel on.