Heat pump spiral ground source pile

Abstract

The utility model relates to the technical field of ground source heat pumps and ground source piles, in particular to a heat pump spiral ground source pile with internal and external spiral blades, which is used as a building foundation to be arranged below a ground anti-freezing layer so as to realize exchange and storage of cold and heat source energy of soil below the ground anti-freezing layer. The heat pump spiral ground source pile is provided with the inner spiral blade and the outer spiral blade, and is characterized in that the outer spiral blade is used for screwing the heat pump spiral ground source pile into the ground surface layer under the action of mechanical pressure and rotation, the screwing depths are different according to different geologies, and the deeper the screwing depth is, the more the exchanged energy is. According to the utility model, the temperature of discharged air or seawater is transferred into the soil below the anti-freezing layer of the earth surface, so that the heat pump efficiency can be improved, the investment cost can be reduced, and the environment can be protected.

Description

Technical Field

[0001] The utility model relates to the technical fields of ground source heat pumps and ground source piles, and particularly relates to a heat pump spiral ground source pile with inner and outer spiral blades. Background Art

[0002] The temperature of the climate is related to life safety. Whether it is humans or various animals and plants, the temperature environment dominates the living space. In order to survive, humans have invented various products to improve and regulate the temperature. Among them, heating and cooling are typical case products for regulating the temperature. Now, humans have become inseparable from products such as air conditioners to meet the daily temperature regulation. However, the seemingly simple heating and cooling problems hide major hidden dangers in nature.

[0003] For example, the air source heat pump that is now widely promoted and applied all over the world is the chief culprit for environmental damage. Now, most areas in the south have installed air conditioners, also known as air source heat pumps. However, in recent years, winters in the south have become colder and colder. In the past, it was the north that had snow, but now, on the contrary, the south has become prone to snow disasters, and there are continuous heavy rains in summer. The reasons are thought-provoking. In order to improve the living environment and create a comfortable space with warm winters and cool summers, humans have adopted the natural energy that should not be used, namely entropy energy.

[0004] In summer, in order to keep the indoor cool, the heat in the room is discharged to the outside at a high density. In a city with high-density housing, every household discharges heat into the air, which rapidly raises the outside temperature. Thinking carefully, the ability of humans is so great that they have raised the environmental temperature by at least two to four degrees. The increase in temperature accelerates the evaporation of water. The rapidly rising warm and humid air has no time to diffuse, and too much water vapor quickly condenses into rain, resulting in frequent heavy rain and flood disasters.

[0005] Especially in winter, in order to get warm, humans discharge cold air to the outside, resulting in a rapid drop in the environmental air temperature. The wet and cold air quickly shrinks and is difficult to diffuse, condensing into heavy snow.

[0006] According to statistics, there are fewer air sources installed in cold regions in the north. The air source heat pumps in the south form a low-pressure circulation phenomenon, and the dry and wet air currents are rarely exchanged, resulting in less snow in winter and less rain in summer in the north. Such a vicious cycle has led to environmental deterioration and created disasters artificially.

[0007] Since we want to improve the environment, we have to solve the problem fundamentally. As far as the existing technology is concerned, the ground source heat pump is the best method, but it requires drilling holes and installing U-shaped pipes, with high construction difficulty and high cost, which is generally difficult for general projects to bear. Summary of the Invention

[0008] In view of the current technical status of existing ground source heat pumps and ground source piles, the following solution is proposed. The present utility model mainly uses a heat pump spiral ground source pile as a building foundation and installs it below the ground frost protection layer to achieve energy exchange and storage with the soil cold and heat sources below the surface frost protection layer. The heat pump spiral ground source pile of the present utility model is provided with an inner spiral blade and an outer spiral blade. Its characteristic is that the heat pump spiral ground source pile is screwed into the soil below the surface frost protection layer under the action of pressure and rotation. According to different geological conditions, the screwing depth is also different. The deeper it is screwed in, the more energy is exchanged.

[0009] The inner spiral blade mainly realizes the flow contact area of the energy circulation medium in the ground source pile pipeline. The heat or cold absorbed by the circulation medium in the building is lifted in energy density under the action of the heat pump and then transferred to the surface layer through the wall of the ground source pile pipeline. The earth is a huge energy storage pool. Under the action of the heat pump, the circulation medium carrying high-density heat or cold expands the conduction area through the inner wall of the spiral blade, effectively improving the temperature conduction efficiency. Especially, the pile body driven into the ground by pressing, punching, rotating and squeezing is closely combined with the geology, and no empty layer will be generated, truly realizing the goal of high-efficiency ground source exchange.

[0010] The technical solution of the present utility model is: a heat pump spiral ground source pile, which includes a ground source pile, a cone head, an outer spiral blade, a circulation medium inlet, a circulation medium outlet, a pile foundation pipe, a pile foundation flange, a return circulation medium pipe, a heat insulation pipe, a return circulation medium port, a heat insulation flange, a circulation medium isolation flange, and an inner spiral blade. The ground source pile is in a cylindrical shape. A conical cone head is installed at the lower end of the ground source pile. An outer spiral blade is provided on the outer walls of the ground source pile and the cone head. An inner spiral blade is installed on the inner wall of the ground source pile. The outer spiral blade and the inner spiral blade form an integral co-directional spiral. A pile foundation pipe is installed at the upper end of the ground source pile. The circulation medium inlet is tangentially installed at the upper end of the ground source pile. The circulation medium outlet is installed at the lower end of the pile foundation pipe. A return circulation medium pipe is arranged at the center of the ground source pile. A heat insulation pipe is installed on the outer wall of the return circulation medium pipe. The circulation medium isolation flange is arranged at the top of the return circulation medium pipe in the ground source pile. A heat insulation flange is installed at the lower end of the heat insulation pipe.

[0011] The ground source pile and the cone head are installed below the frozen soil layer of the place of use. The height of the pile foundation pipe is determined according to the building requirements and the heights of the ground surface and the frozen soil layer.

[0012] Preferably, the manufacturing materials of the outer spiral blade, the ground source pile, and the inner spiral blade are selected as new corrosion-resistant strip steel and are formed by synchronous roll welding under the action of machinery.

[0013] Preferably, the circulation medium isolation flange at the lower end of the pile foundation pipe isolates the circulation medium below the frozen soil layer. The pile foundation pipe plays the roles of frost protection and supporting the building height on the ground. All the circulation medium pipelines are laid below the frozen soil layer.

[0014] Advantages of the present utility model:

[0015] 1. The present utility model can replace the existing concrete foundation of a building, saving investment costs, effectively enhancing the strength of the building foundation, improving the seismic resistance, and ensuring the service life of the building.

[0016] 2. Through mechanical means, the present utility model is closely combined with the soil, effectively increasing the temperature exchange capacity, transferring the temperature discharged into the air or seawater to the soil below the surface frost protection layer, which can not only improve the heat pump efficiency and reduce the investment cost, but also protect the environment.

[0017] 3. The pile foundation pipe is isolated from the circulating medium, playing a role in preventing freezing and supporting the building height on the ground. All the circulating medium pipes are laid below the frozen soil layer. Description of the drawings

[0018] Figure 1 The front view structural schematic diagram of the heat pump spiral ground source pile of the present utility model is shown;

[0019] Figure 2 The cross-sectional schematic diagram of the heat pump spiral ground source pile of the present utility model is shown;

[0020] Figure 3 The partial cross-sectional enlarged structural schematic diagram of the heat pump spiral ground source pile of the present utility model is shown;

[0021] Description of the reference numerals: 1. Ground source pile; 2. Cone head; 3. Outer spiral blade; 4. Circulating medium inlet; 5. Circulating medium outlet; 6. Pile foundation pipe pile; 7. Pile foundation flange; 8. Return circulating medium pipe; 9. Heat insulation pipe; 10. Return circulating medium port; 11. Heat insulation flange; 12. Circulating medium isolation flange; 13. Inner spiral blade. Detailed implementation manners

[0022] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0023] Please refer to Figures 1-3, the present utility model provides an embodiment: a heat pump spiral ground source pile, which is composed of a ground source pile 1, a cone head 2, an outer spiral blade 3, a circulating medium inlet 4, a circulating medium outlet 5, a pile foundation pipe 6, a pile foundation flange 7, a return circulating medium pipe 8, a heat insulation pipe 9, a return circulating medium port 10, a heat insulation flange 11, a circulating medium isolation flange 12, and an inner spiral blade 13. The ground source pile 1 is cylindrical. A conical cone head 2 is installed at the lower end of the ground source pile 1. An outer spiral blade 3 is provided on the outer walls of the ground source pile 1 and the cone head 2. An inner spiral blade 13 is installed on the inner wall of the ground source pile 1. The outer spiral blade 3 and the inner spiral blade 13 form an integral co-directional spiral. A pile foundation pipe 6 is installed at the upper end of the ground source pile 1. The circulating medium inlet 4 is tangentially installed at the upper end of the ground source pile 1. The circulating medium outlet 5 is installed at the lower end of the pile foundation pipe 6. A return circulating medium pipe 8 is arranged at the center inside the ground source pile 1. A heat insulation pipe 9 is installed on the outer wall of the return circulating medium pipe 8. The circulating medium isolation flange 12 is arranged at the top of the return circulating medium pipe 8 inside the ground source pile 1. A heat insulation flange 11 is installed at the lower end of the heat insulation pipe 9.

[0024] The ground source pile 1 and the cone head 2 are installed under the frozen soil layer of the place of use. The height of the pile foundation pipe 6 is determined according to the building requirements and the heights of the ground surface and the frozen soil layer.

[0025] The embodiments of the present utility model are as follows. In summer, the heat pump or air conditioner compresses the temperature heat absorbed from the environment and sends it into the circulating medium inlet 4 through the circulating medium. The circulating medium tangentially follows the inner wall of the ground source pile 1 and is conveyed to the inside of the cone head 2 by the inner spiral blade 13. The cooled circulating medium passes through the return circulating medium port 10, through the return circulating medium pipe 8, and is docked with the heat pump or air conditioner from the circulating medium outlet. In winter, the heat pump or air conditioner compresses and cools the cold in the room and sends it into the ground source pile 1 to exchange the heat of the surface layer for heating. The circulating medium carrying the temperature enters through the circulating medium inlet 4. Under the action of the inner spiral blade 13, the circulating medium spirally descends. The inner spiral blade 13 and the outer spiral blade 3 are of an integral structure. The temperature carried by the circulating medium is transferred to the soil through the wall of the ground source pile 1 and the surface of the outer spiral blade 3. The outer spiral blade effectively expands the temperature exchange area, improves the temperature exchange efficiency, reduces the investment cost. After the temperature exchange, the circulating medium circulates back into the heat pump or air conditioner through the return circulating medium pipe 8 to carry the temperature again, and the energy is exchanged in a cycle.

[0026] The above has described in detail the embodiments of the present utility model in conjunction with the drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A heat pump spiral ground source pile, comprising a ground source pile (1), a cone head (2), an outer spiral blade (3), a circulating medium inlet (4), a circulating medium outlet (5), a pile foundation pipe (6), a pile foundation flange (7), a return circulating medium pipe (8), an insulation pipe (9), a return circulating medium port (10), an insulation flange (11), a circulating medium isolation flange (12), and an inner spiral blade (13), wherein: The ground source pile (1) is cylindrical, a conical cone head (2) is installed at the lower end of the ground source pile (1), outer spiral blades (3) are installed on the outer walls of the ground source pile (1) and the cone head (2), inner spiral blades (13) are installed on the inner wall of the ground source pile (1), the outer spiral blades (3) and the inner spiral blades (13) are integrally spiraled in the same direction, a pile foundation pipe (6) is installed at the upper end of the ground source pile (1), the circulating medium inlet (4) is tangentially installed at the upper end of the ground source pile (1), the circulating medium outlet (5) is installed at the lower end of the pile foundation pipe (6), a return circulating medium pipe (8) is arranged at the center of the ground source pile (1), a thermal insulation pipe (9) is installed on the outer wall of the return circulating medium pipe (8), the circulating medium isolation flange (12) is arranged at the top end of the return circulating medium pipe (8) in the ground source pile (1), and a thermal insulation flange (11) is installed at the lower end of the thermal insulation pipe (9).

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