KR102178937B1 - Module-type Ground Heat Exchanger - Google Patents

Abstract

It relates to an underground heat exchange device in which the heat exchange area of the heat medium circulating inside is improved, and each portion is configured in a modular form.
The underground heat exchange device includes a supply pipe that supplies a heat medium from the outside to the ground, a heat exchange pipe connected to the supply pipe to receive a heat medium and heat exchange of the heat medium, a reverse pipe and a reverse pipe connected to the heat exchange pipe and collecting the heat exchanged heat medium. It is connected and includes a return pipe that discharges the heat medium from the ground to the outside, and the heat exchange pipe surrounds the supply pipe, the return pipe, and the reverse pipe, and a plurality of peaks are formed along the length direction of the supply pipe, the return pipe and the reverse pipe It is arranged in a spiral manner as possible, and the heat medium flows downward along the heat exchange pipe and flows into the reverse pipe, and then flows upward through the water return pipe.

Description

Modular underground heat exchanger {Module-type Ground Heat Exchanger}

The present invention relates to a modular underground heat exchange device, and more specifically, to an underground heat exchange device in which a heat exchange area of a heat medium circulating inside is improved, and each portion is configured in a modular form.

In general, fossil fuels such as coal, petroleum, and natural gas are used as energy sources used in homes and industries, and these fossil fuels are rapidly increasing in cost due to depletion of reserves. In addition, water quality and air environment are polluted due to various pollutants generated during the combustion process of fossil fuels. Due to this problem, in recent years, development of eco-friendly alternative energy that can replace fossil fuels has been actively progressed.

Eco-friendly alternative energy sources include solar heat, wind power, tidal power, and geothermal heat. Among these, in the case of a cooling and heating system that uses geothermal heat, it can save energy by up to 40% or more compared to existing cooling and heating systems. Unlike wind and solar heat, stable operation is possible by the characteristics of geothermal heat that maintains a constant temperature throughout the year. There is a growing interest in geothermal heat.

In general, a cooling and heating system using geothermal heat as a heat source recovers geothermal heat or releases heat to the ground through an underground heat exchanger buried in the ground as a heat source. The underground heat exchanger performs cooling and heating in connection with a heat pump. The inside of the underground heat exchanger is filled with a heat medium, and heat exchange with the ground is achieved by circulating the heat medium along the pipeline. Accordingly, various technologies have been developed to improve heat exchange efficiency of an underground heat exchange device.

1 is a cross-sectional view schematically showing a conventional underground heat exchange device.

The underground heat exchanger 10 is inserted into a hole 1 drilled at a predetermined depth along a vertical direction from the ground. In general, the underground heat exchanger 10 is composed of an inlet pipe 11 through which the heat medium flows in, an outlet pipe 12 through which the heat medium flows out, and a connection part 13 connecting the inlet pipe 11 and the outlet pipe 12 do.

The underground heat exchange device 10 of FIG. 1 adopts a method of lengthening the circulation path of the heat medium as a way to maximize the heat exchange efficiency during circulation of the heat medium. Specifically, by forming the outflow pipe 12 of the underground heat exchanger 10 in a spiral shape, the heat medium flowing into the inflow pipe 11 rises to the surface near the surface through the outflow pipe 12 and sufficiently heats the soil or groundwater in the ground. Let this happen.

However, such a conventional underground heat exchange device has an advantage in that it improves heat exchange efficiency, but since the inlet pipe 11 and the outlet pipe 12 for circulating the heat medium are integrally formed, there are limitations in terms of installation and maintenance. . For example, when a defect occurs in some of the inlet pipe 11 and the outlet pipe 12, the entire underground heat exchange device 10 has to be replaced, and thus there is a problem that a considerable cost is required for maintenance.

In addition, there is a problem in that it is not easy to manufacture an underground heat exchanger in an integrally long form and transport it to an installation point.

1. Korean Patent Registration No. 10-1746194 (Name of invention: Spiral underground heat exchanger) 2. Korean Registered Publication No. 10-2014-0132118 (Name of invention: coil type underground heat exchanger installation device and underground heat exchanger construction method using the same) 3. Korean Patent Publication No. 10-2018-0033993 (Name of invention: module type underground heat exchanger)

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide an underground heat exchange device capable of performing reverse-return heat exchange in order to greatly improve a heat exchange area when heat exchange of a heat medium is performed in the ground.

Further, an object of the present invention is to provide an underground heat exchange device in which a part of a pipe is formed in a spiral or coil shape so as to maximize an area in which heat exchange takes place without greatly expanding the area buried in the ground.

In addition, it is an object of the present invention to provide an underground heat exchange device in which each part is configured in a modular form so that transportation and installation convenience in a vertical underground heat exchange device can be improved, and maintenance and repair can be easily performed.

In addition, an object of the present invention is to provide an underground heat exchange device provided with a reinforcing means in order to prevent a spiral or coiled heat exchange tube from moving by the surrounding underground environment when the underground heat exchange device is buried in the ground.

The subject of the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

An underground heat exchange device according to an embodiment of the present invention for solving the above problem includes: a supply pipe for supplying a heat medium from the outside to the underground; A heat exchange tube connected to the supply pipe to receive a heat medium and heat exchange between the heat medium; A reverse pipe connected to the heat exchange pipe and collecting the heat exchanged heat medium; And a water return pipe connected to the reverse pipe and flowing out the heat medium from the ground to the outside. Including, the heat exchange pipe is arranged in a spiral so as to surround and surround the supply pipe, the water return pipe, and the reverse pipe and form a plurality of ridges along the longitudinal direction of the supply pipe, the water return pipe, and the reverse pipe, , The heat medium may flow downward along the heat exchange pipe and flow into the reverse pipe, and then flow upward through the water return pipe.

The underground heat exchange device includes: a gap maintaining member disposed along the length direction of the heat exchange tube and coupled to the plurality of peaks so that the gap between the plurality of peaks is fixed; It may further include.

The spacing member may be formed in a rod shape and may be attached along the plurality of peaks at an inner or outer periphery of the spiral heat exchange tube.

The gap maintaining member may include an uneven portion formed to correspond to the shape of the spiral heat exchange tube, and may be formed to accommodate the plurality of acid portions in the uneven portion.

A delivery module that supplies a heat medium and returns the heat exchanged heat medium to the outside; A heat exchange module for performing heat exchange of the heat medium supplied from the transfer module and transferring the heat exchanged heat medium to the transfer module; And at least one return module for transferring the heat exchanged heat medium to the heat exchange module by switching the flow of the heat exchanged heat medium passing through the heat exchange module. Including, the transfer module and the return module may be formed to be detachable from each other and the heat exchange module.

The heat exchange module includes: a pipe spacer member configured to allow the supply pipe, the reverse pipe, and the water return pipe to be spaced apart from each other by a predetermined distance; Including, the tube spacing member may be disposed adjacent to a point at which the heat exchange pipe is connected to the supply pipe or a point at which the heat exchange pipe is connected to the reverse pipe.

The pipe spacing member may include a plurality of holes formed in a disk shape and formed to pass through the supply pipe, the reverse pipe, and the water return pipe, and at least one protrusion protruding in a center direction of the plurality of holes.

The transfer module is formed by extending the supply pipe and the return pipe of the heat exchange module in a direction opposite to the direction in which the return module is attached and detached, and transfers the heat medium from the outside to the heat exchange module and transfers the heat medium from the heat exchange module to the outside. Can be configured to deliver.

The transfer module, the heat exchange module, and the return module may be sequentially disposed.

A flange or socket part is interposed between the transfer module and the heat exchange module and between the heat exchange module and the return module, and the transfer module, the heat exchange module and the return module are detachable by fastening the flange or the socket part. Can be configured.

The underground heat exchanger comprises: a plurality of cap portions coupled to one end of the supply pipe to close one end of the supply pipe, and coupled to one end of the reverse pipe to close one end of the reverse pipe; It may further include.

An underground heat exchange device according to an embodiment of the present invention includes: a supply pipe for supplying a heat medium from the outside to the underground; A heat exchange pipe connected to the supply pipe and formed to perform heat exchange of the heat medium; A reverse pipe connected to the heat exchange pipe and collecting the heat exchanged heat medium; And a water return pipe connected to the reverse pipe and flowing out the heat medium from the ground to the outside. Including, the heat exchange tube is formed in a spiral, the supply pipe, the water return pipe, and the reverse pipe are disposed inside the spiral heat exchange pipe, the supply pipe, the heat exchange pipe, the reverse pipe and the water return pipe, The heat medium supplied to the heat exchange pipe through the supply pipe may be configured to flow downward along the heat exchange pipe and flow into the reverse pipe, and then flow upward through the water return pipe.

An underground heat exchange device according to an embodiment of the present invention includes: a supply pipe for supplying a heat medium from the outside to the underground; A heat exchange pipe connected to the supply pipe and formed in a spiral shape to guide the heat medium introduced from the supply pipe downward; A reverse pipe connected to the heat exchange pipe and into which the heat medium heat exchanged in the heat exchange pipe flows; And a water return pipe connected to the reverse pipe and flowing out the heat medium from the ground to the outside. Including, the supply pipe may communicate with the heat exchange pipe at at least two or more portions, and the heat exchange pipe may communicate with the reverse pipe at at least two portions.

According to the modular underground heat exchanger of the present invention, by adding a reverse pipe in addition to the supply pipe and the return pipe of the heating medium, and forming a connection pipe connecting each pipe in a spiral structure, heat exchange of the heating medium in the buried space of the heat exchanger The area can be greatly improved. As a result, heat exchange efficiency is improved compared to a general heat exchange device.

In addition, according to the modular underground heat exchange device of the present invention, it is possible to improve the convenience of transportation and installation of the device by configuring each part in a modular form. Further, it is possible to save cost by performing maintenance and repair by replacing only defective modules among the devices.

In addition, according to the modular underground heat exchange device of the present invention, each part can be extended or reduced in plural according to the environment of the buried area or the capacity of the cooling/heating system, and thus various types such as the depth of the buried area and the capacity of the heat pump There is an advantage that it can be applied appropriately to the conditions.

In addition, according to the modular underground heat exchange device of the present invention, when a spacer member of the heat exchange tube is provided so that the underground heat exchanger is buried in the ground, the heat exchanger tube configured in a spiral or coil shape is spaced apart at a predetermined interval by the surrounding underground environment. By supporting so that it is possible to prevent the problem of lowering the heat exchange efficiency.

In addition, according to the modular underground heat exchange apparatus of the present invention, there is an advantage of improving mechanical stability by configuring a spiral or coil-type heat exchange tube to be firmly supported without moving.

1 is a cross-sectional view showing a conventional underground heat exchange device.
2 is a perspective view showing an underground heat exchange device according to an embodiment of the present invention.
3 is a schematic conceptual diagram showing a process of circulating a heat medium in the underground heat exchanger of the present invention.
4 is a perspective view showing a delivery module.
FIG. 5 is a cross-sectional view illustrating a cross section taken along line aa of FIG. 4.
6 is a perspective view showing a portion to which the transfer module and the heat exchange module are connected.
7 is a perspective view showing a heat exchange module.
FIG. 8 is a cross-sectional view taken along line bb in FIG. 7.
9 is a front view showing a tube spacer member.
10 is a perspective view illustrating a portion to which a heat exchange module and a return module are connected.
11 is a perspective view showing a return module.
12 is a cross-sectional view showing a cross section taken along line cc of FIG. 11.
13 is a perspective view showing a heat exchange tube and a gap maintaining member coupled to the heat exchange tube.
14 is a cross-sectional view showing a cross-section of an underground heat exchange device including a gap maintaining member.
15 is a front view showing another example of the spacing member.
16 is a perspective view illustrating a state in which a plurality of modules are connected to each other through a socket part.
FIG. 17 is a schematic cross-sectional view of a section “A” of FIG. 16.
18 is a perspective view schematically showing a state in which a cap portion is installed in the supply pipe of the return module.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present invention are illustrative and are illustrated for convenience of description, so the present invention is not limited to the illustrated matters. In addition, in describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

When'to include','have','to be made', etc. mentioned in the present specification are used, other parts may be added unless'only' is used. In the case of expressing the constituent elements in the singular, it includes the case of including the plural unless specifically stated otherwise. In interpreting the constituent elements, it is interpreted as including an error range even if there is no explicit description.

Meanwhile, a "module" or "unit" for a component used in the present specification performs at least one function or operation. And, the "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of "modules" or a plurality of "units" excluding "module" or "unit" to be performed in specific hardware or performed by at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly indicates otherwise.

When an element or layer is referred to as “on” another element or layer, it includes all cases where another layer or other element is interposed directly on or in the middle of another element.

The same reference numerals refer to the same components throughout the specification.

Each of the features of the various embodiments of the present invention can be partially or entirely combined or combined with each other, and as a person skilled in the art can fully understand, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other. It may be possible to do it together in a related relationship.

Hereinafter, a modular underground heat exchange device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, with reference to FIGS. 2 and 3, the overall structure of the underground heat exchanger of the present invention and the circulation process of the heat medium will be described.

FIG. 2 is a perspective view showing an underground heat exchanger 100 according to an embodiment of the present invention, and FIG. 3 is a schematic conceptual diagram showing a process of circulating the heat medium 1 in the underground heat exchanger 100 of the present invention to be.

Referring to Figures 2 and 3, the underground heat exchange device 100 of the present invention is a supply pipe 110 for supplying a heat medium (not shown) from the outside to the underground, a heat exchange pipe 120 connected to the supply pipe for heat exchange of the heat medium. , A reverse pipe 130 connected to the heat exchange pipe and collecting the heat exchanged heat medium, and a return pipe 140 connected to the reverse pipe and flowing the heat medium to the outside from the ground. In the underground heat exchange apparatus 100 of the present invention, when the heat medium is supplied to the supply pipe 110, the heat medium flows through the heat exchange pipe 120 to the reverse pipe 130, and the heat medium collected by the reverse pipe 130 is a return pipe 140. It is formed to flow out through through.

The supply pipe 110 supplies the heat medium to the underground heat exchanger 100 of the present invention from the outside, and the water return pipe 140 returns the heat medium heat exchanged in the underground heat exchanger 100 to the outside. These supply pipes 110 and water return pipes 140 are opened toward the ground, and although not shown, may be connected to a heat pump on the cooling and heating system through an external pipe.

The supply pipe 110 and the return pipe 140 may be vertically inserted into the ground from the ground as shown. The supply pipe 110 and the return pipe 140 are pipes for introducing the heat medium from the outside and outflowing the heat medium back to the outside, and their length and diameter may be appropriately determined according to the depth of the buried area or the capacity of the cooling and heating system. In addition, the supply pipe 110 and the water return pipe 140 may each be formed as one pipe, as shown, of course, that a plurality of pipes may also be formed in an aggregated form.

Meanwhile, in the supply pipe 110, only the opening 111 through which the heat medium is introduced from the outside and the opening 112 connected to the heat exchange pipe 120 are opened, and the remaining regions are formed in a closed form. Accordingly, all the heat medium introduced into the supply pipe 110 flows into the heat exchange pipe 120.

The underground heat exchange device 100 includes a heat exchange pipe 120 and a reverse pipe 130 connected to the supply pipe 110 and the return pipe 140 in order to further improve heat exchange efficiency in the underground.

The heat exchange pipe 120 is connected to the supply pipe 110 to receive the heat medium from the supply pipe 110. The heat exchange tube 120 is formed to allow heat exchange of the heat medium in the ground, and is preferably formed so as to contact the soil, groundwater, and the like in the widest surface area.

As shown in Figure 2, the heat exchange pipe 120 is wrapped around the supply pipe 110, the reverse pipe 130 and the return pipe 140, and the supply pipe 110, the reverse pipe 130, and the return pipe 140 It may be formed in a spiral (or coil type) along the length direction. In this way, the heat exchange tube 120 is preferably formed in a spiral structure so that the heat medium introduced from the supply pipe 110 can flow through the heat exchange tube 120 for as long as possible and for a long time. Further, the heat exchange tube 120 is preferably disposed outside the underground heat exchange device 100 of the present invention to be formed so as to sufficiently contact heat medium materials such as soil and groundwater.

A plurality of heat exchange tubes 120 may be included. That is, a plurality of heat exchange pipes 120 may be connected between the supply pipe 110 and the reverse pipe 130.

Meanwhile, the structure of the heat exchange tube 120 is not limited to the illustrated bar. For example, the heat exchange pipe 120 extending from the supply pipe 110 may be separated into a plurality of tubular tubes and then recombined to be connected to the reverse pipe 130, and the heat exchange pipe 120 may be connected to the reverse pipe 130 by adopting various structures to increase the surface area. Of course this can be formed.

The reverse pipe 130 is a pipe connected to the heat exchange pipe 120 and collecting the heat exchanged heat medium.

The reverse pipe 130 may be vertically inserted into the ground from the ground, such as the supply pipe 110 and the return pipe 140. One end of the reverse pipe 130 is connected to the water return pipe 140. In the reverse pipe 130, only the end portion 131 through which the heat medium flows from the heat exchange pipe 120 and the portion 132 connected to the water return pipe 140 are opened, and the remaining regions may be formed in a closed form. In this way, the heat transfer medium collected by the reverse pipe 130 flows to the return pipe 140.

The heat exchange pipe 120 and the reverse pipe 130 can greatly improve the heat exchange area of the heat medium in the buried space of the underground heat exchange device 100. In other words, the heat exchange pipe 120 and the reverse pipe 130 serve to secure a flow path of the heat medium so that the heat medium introduced into the ground through the supply pipe 110 can sufficiently stay in the underground space and perform heat exchange. Therefore, the underground heat exchange device 100 of the present invention can greatly improve heat exchange efficiency in the ground by including the heat exchange tube 120 and the reverse tube 130.

In addition, the underground heat exchange device 100 of the present invention may be formed of a stainless steel material (or, a sus (SUS) material) or a polyethylene (PE) material. For example, the entire configuration of the underground heat exchange device 100 may be formed only with a sus material, and the supply pipe 110, the reverse pipe 130 and the water return pipe 140 are formed of a sus material, but a curved surface is formed to increase the surface area. The heat exchange tube 120 containing a lot may be formed of a polyethylene (PE) material. However, the present invention is not limited thereto, and it is a matter of course that the underground heat exchange device 100 of the present invention may be selected without limitation as long as it is a material used to form the conventional underground heat exchange device 100.

Meanwhile, the underground heat exchange device 100 of the present invention may be divided into a transfer module (A), a heat exchange module (B), and a return module (C) according to its function, and each module may be formed to be detachable from each other. have.

Specifically, referring to FIG. 2, the underground heat exchange device 100 of the present invention supplies a heat medium, and a transfer module (A) that returns the heat exchanged heat medium to the outside, and heat exchange of the heat medium supplied from the delivery module (A). And the heat exchange module (B) for transferring the heat exchanged heat medium to the transfer module (A), and the heat exchanger module (B) passing through the heat exchanger to switch the flow of the heat exchanged heat exchanger to convert the heat exchanged heat medium to the heat exchange module ( It includes at least one return module (C) to pass to B).

Here, a connecting means capable of connecting a plurality of modules to each other may be interposed between a plurality of modules sequentially arranged along one direction.

16 is a perspective view showing a state in which a plurality of modules are connected to each other through a socket unit 180, FIG. 17 is a schematic cross-sectional view of a section “A” of FIG. 16, and FIG. 18 is a return module (C ) Is a perspective view schematically showing a state in which the cap unit 190 is installed in the supply pipe 110 of).

2 and 16, the connecting means includes at least one of a flange 150 and a socket unit 180, and accordingly, a plurality of modules sequentially arranged along one direction is a flange 150 and a socket unit They are connected or separated from each other through at least one of (180) coupling and separation.

Hereinafter, each module and structure thereof of the heat exchange device 100 of the present invention will be described in detail with reference to FIGS. 4 to 12. For convenience of description, FIGS. 1 to 3 may be referred to together.

Figure 4 is a perspective view showing the delivery module (A), Figure 5 is a cross-sectional view showing a cross-sectional view taken along line aa of Figure 4, Figure 6 is a portion to which the transfer module (A) and the heat exchange module (B) are connected. FIG. 7 is a perspective view showing a heat exchange module (B), FIG. 8 is a cross-sectional view taken along line bb in FIG. 7, and FIG. 9 is a front view showing the tube spacer 160 , FIG. 10 is a perspective view showing a portion to which the heat exchange module (B) and the return module (C) are connected, FIG. 11 is a perspective view showing the return module (C), and FIG. 12 is a cross-sectional view taken along line cc of FIG. 11 Is a cross-sectional view showing.

2, 4 to 6 and 16, the delivery module (A) includes a supply pipe 110 and a return pipe 140 to supply a heat medium to the underground heat exchange device 100, and the underground heat exchange device 100 It is a module that returns the heat exchanged heat exchanged in) to the outside.

The delivery module (A) may be formed in a double pipe structure including a supply pipe 110 and a water return pipe 140. In addition, at least one of the flange 150 and the socket unit 180 may be installed at both ends of the supply pipe 110 and the return pipe 140 for connection with the heat exchange module (B).

6, the flange 150 connects the delivery module (A) and the heat exchange module (B) while connecting the supply pipe 110 and the water return pipe 140 so that the supply pipe 110 and the water return pipe 140 communicate with each other. It may include a plurality of holes 151 passing through. And, the flange 150 is formed in a disk shape as shown, and includes a bolt fastening portion 152 along the outer periphery.

Referring to FIGS. 16 and 17, the socket unit 180 may be formed in a tubular shape stepped inside along the axial direction. In more detail, the socket unit 180 is a supply pipe 110 and a water return pipe so that each of the supply pipes 110 and the water return pipe 140 provided in the delivery module A and the heat exchange module B can be coupled to a set position. (140) It may include a plurality of coupling grooves 181 are inserted and seated, and a communication hole 182 for communicating the supply pipe 110 and the return pipe 140 inserted into the plurality of coupling grooves 181 . For example, the socket unit 180 and the connection portion of each pipe coupled to the socket unit 180 may be integrally connected through welding, thermal welding, ultrasonic welding, or the like. In addition, threads capable of engaging with each other may be further formed on the inner circumferential surface of the socket unit 180 and the outer circumferential surface of each tube in contact with the inner circumferential surface of the socket unit 180.

In addition, one side of the delivery module (A) is disposed toward the ground and the supply pipe 110 and the water return pipe 140 are formed to be open to the outside, so that the heat medium can flow. Further, the opposite side is disposed in contact with the heat exchange module (B) and is opened to be connected to the supply pipe 110 and the water return pipe 140 of the heat exchange module (B).

On the other hand, in the delivery module (A), the supply pipe 110 and the return pipe 140 are preferably arranged parallel to each other, and the reference point as shown in FIG. 5 in consideration of the arrangement form with the reverse pipe 130 to be described later. It is preferable that they are arranged to achieve a stateful position of +60 degrees and -60 degrees based on 0 degrees.

6 to 10, the heat exchange module (B) includes a supply pipe 110, a reverse pipe 130, and a return pipe 140 so that the heat medium supplied from the delivery module A can heat exchange in the ground. It is a module that does.

The heat exchange module (B) may be configured in a form in which the heat exchange pipe 120 is spirally wrapped in a triple pipe structure including the supply pipe 110, the reverse pipe 130 and the return pipe 140.

The supply pipe 110 and the water return pipe 140 of the heat exchange module B are in communication with the supply pipe 110 and the water return pipe 140 of the delivery module A. Accordingly, the heat exchange module (B) performs heat exchange of the heat medium transferred from the supply pipe 110 of the transfer module (A) and transfers the heat exchanged heat medium to the return pipe 140 of the transfer module (A).

The heat exchange tube 120 of the heat exchange module B is an end 121 connected to the supply pipe 110 (hereinafter referred to as a first end) and an end 122 connected to the reverse pipe 130 (hereinafter referred to as a second end) Including, it may be formed in a spiral between the first end 121 and the second end 122. The first end 121 is an end of the side where the heat medium flows from the supply pipe 110 to the heat exchange tube 120, and the second end 122 is an end of the side where the heat exchanged heat medium flows out to the reverse pipe 130. Therefore, it is preferable that the first end 121 is disposed adjacent to the delivery module A side and the second end 122 is adjacent to the return module C side to be described later in consideration of the flow of the heat medium.

A plurality of such heat exchange tubes 120 may be included, and the plurality of heat exchange tubes 120 may be disposed along the longitudinal direction of the heat exchange module (B).

Further, the heat exchange module (B) may include a pipe spacing member 160 to allow the supply pipe 110, the reverse pipe 130, and the return pipe 140 to be spaced apart from each other by a predetermined interval.

The pipe spacer member 160 is formed in a disk shape, as shown in FIG. 9(a), and a plurality of holes 161 through which the supply pipe 110, the reverse pipe 130, and the water return pipe 140 may pass. ). The plurality of holes 161 may be formed to have a size corresponding to the outer diameter of each tube. Accordingly, the supply pipe 110, the reverse pipe 130, and the water return pipe 140 passing through the plurality of holes 161 are supported on the inner surface of the pipe separation member 160 to stably maintain a vertical state without distortion of the central axis. Can be maintained.

Meanwhile, referring to (b) of FIG. 9, a separate support structure capable of supporting the supply pipe 110, the reverse pipe 130, and the return pipe 140 may be further formed in the pipe spacer member 160. have.

In more detail, the plurality of holes 161 provided in the tube spacer member 160 are formed larger than the diameter of each corresponding tube, and holes 161 on the inner circumferential surface of the tube spacer member 160 in which each hole 161 is formed. ) At least one protrusion 162 protruding toward the center of the hole 161 may be formed in order to prevent the supply pipe 110, the reverse pipe 130, and the water return pipe 140 from flowing inside.

Here, the end of the protrusion 162 supporting the outer surface of each pipe may be formed in a shape corresponding to the outer surface of the pipe, and the end of the protrusion 162 is in contact with the outer surface of each pipe, such as vibration or impact transmitted from the pipe. A buffer material made of an elastic material may be provided to absorb and disperse it. In addition, the protrusion 162 may be formed integrally with the tube spacer member 160, or may be manufactured separately from the tube spacer member 160 and installed inside the hole 161, as well as the tube spacer member through heterogeneous injection. Doedoe provided integrally with the 160, it can be applied to the above-described elastic material.

Therefore, by supporting the supply pipe 110, the reverse pipe 130, and the return pipe 140 through which the protrusion 162 penetrates the inside of the hole 161, each pipe is inserted into the ground while being spaced apart by a predetermined distance from each other. If it is, it can be firmly fixed so that its position does not deviate.

In addition, the tube spacing member 160 is in the vicinity of the first end 121 to which the heat exchange tube 120 is connected to the supply pipe 110, and the second end 122 to which the heat exchange tube 120 is connected to the reverse pipe 130 ) Can be deployed in the vicinity of. The tube spacer member 160 disposed in this position may serve to support the heat exchange tube 120 so that it does not flow along the lengthwise direction of the heat exchange module (B). Thereby, the pipe spacer member 160 allows the supply pipe 110, the reverse pipe 130, and the return pipe 140 to be spaced apart by a predetermined interval and at the same time support the heat exchange pipe 120, so that the underground heat exchange device of the present invention The durability of (100) can be improved.

However, the shape of the tube spacing member 160 is not limited to that shown, and various types of spacing members may be employed to maintain the spacing of each tube.

For example, referring to (c) of Figure 9, the pipe spacer member 160 is divided into a plurality of parts to support the outer peripheral surface of the supply pipe 110, the reverse pipe 130, and the return pipe 140 as an inner peripheral surface during assembly It may be formed in a ring-shaped assembly structure, wherein a buffer of an elastic material capable of supporting each tube from inside to outside is provided between the supply pipe 110, the reverse pipe 130, and the water return pipe 140. I can.

2, 3, and 16, the heat exchange module (B) is detachably connected to the return module (C) through at least one of the flange 150 and the socket 180. At this time, the supply pipe 110 of the heat exchange module (B) communicates with the supply pipe 110 of the transfer module (A) and the remaining portions except for the portion connected to the heat exchange pipe 120 are formed in a closed form. For example, as shown in FIG. 17, a cap portion 190 for closing an opening on one side of the supply pipe 110 may be installed at an end of the supply pipe 110 of the heat exchange module (B). Therefore, the supply pipe 110 of the heat exchange module (B) is formed to be sealed toward the return module (C), and only the reverse pipe 130 and the return pipe 140 of the heat exchange module (B) are flanged toward the return module (C). 150) and the socket portion 180 is formed to communicate with at least one.

On the other hand, in the heat exchange module (B), the supply pipe 110, the reverse pipe 130 and the water return pipe 140 are preferably arranged parallel to each other, and the supply pipe 110 and the water return pipe extended from the delivery module (A) ( 140) In the same way as the supply pipe 110 and the return pipe 140 of the delivery module (A), the position of +60 degrees and -60 degrees based on the reference point 0 degrees is achieved, and the reverse pipe 130 is the supply pipe 110 ) And the return pipe 140 and are preferably disposed to form an angle of 120 degrees, respectively.

10 to 12, the return module (C) serves to transfer the heat medium collected by the reverse pipe 130 by heat exchange to the return pipe 140, and from the ground to the reverse pipe 130 It is a module that plays the role of converting the flow of the heat medium that has been moved to. The heat medium introduced from the outside moves in the underground direction through the supply pipe 110, the heat exchange pipe 120 and the reverse pipe 130, and the return module (C) changes the direction of the heat medium to change the return pipe 140. It serves to guide the heat medium to flow back to the surface.

In the return module (C), the reverse pipe 130 and the return pipe 140 are connected to each other, and the connection portion of the reverse pipe 130 and the return pipe 140 is formed in a U-shape to switch the flow of the heat medium. Can be.

In the return module (C), the reverse pipe 130 and the water return pipe 140 are preferably arranged to be parallel and connected to each other (ie, like a U), and the reverse pipe 130 and the water return pipe at a parallel portion It is preferable that the tube 140 is arranged to achieve a stateful position of +60 degrees and +180 degrees based on the reference point 0 degrees.

Referring to (a) and (b) of FIG. 11, it is shown that the end of the supply pipe 110 extends and protrudes to the return module (C). However, the end of the supply pipe 110 is formed only up to the boundary portion between the heat exchange module (B) and the return module (C), unlike shown, may be formed so as not to protrude toward the return module (C). However, the end of the supply pipe 110 is in a closed form in any case.

On the other hand, in the underground heat exchange apparatus 100 of the present invention, a transmission module (A), a heat exchange module (B), and a return module (C) are sequentially arranged and coupled to each other in a modular manner, the transmission module (A) and the heat exchange module ( Of course, a plurality of B) may be included, and a plurality of modules may be coupled to each other in an extended form.

In other words, in consideration of the depth of the buried area and the length of each module, a plurality of delivery modules (A), a plurality of heat exchange modules (B), and a return module (C) may be combined and fastened.

For example, in order to heat exchange in a groundwater tank located at a predetermined depth of the ground, a plurality of transfer modules (A) are extended and fastened from the surface to the groundwater table, and a plurality of heat exchange modules (B ) To extend and finally connect the return module (C) to the underground heat exchange device 100 of the present invention. Furthermore, if a plurality of groundwater basins exist at different depths, the transfer module (A) is extended to the upper groundwater basin, and the heat exchange module (B) is extended and fastened by the depth of the upper groundwater basin. Underground heat exchange according to the present invention by extending the delivery module (A) to the groundwater basin of and connecting the heat exchange module (B) to the depth of the lower groundwater basin, and finally fastening the return module (C). The device 100 can also be configured.

According to the modular underground heat exchange device 100 of the present invention, which can be assembled and fastened in this manner, the modules of each part can be extended or reduced in plurality according to the environment of the buried area or the capacity of the cooling and heating system, There is an advantage that it can be appropriately applied to various conditions such as the depth of the area and the capacity of the heat pump.

Further, it is possible to improve the convenience of transport and installation of the device by configuring each part of the present invention in a modular form. In addition, if a defect occurs in the underground heat exchange device 100, there is an advantage that cost can be saved by performing maintenance by replacing only the module in which the defect is located.

Hereinafter, with reference to FIGS. 13 to 15, the spacing members 170 and 170 ′ coupled to the heat exchange tube 120 of the heat exchange device 100 of the present invention will be described in detail. For convenience of description, FIGS. 1 to 12 may be referred to together.

FIG. 13 is a perspective view showing a heat exchange tube 120 and a gap maintaining member 170 coupled to the heat exchange tube 120, and FIG. 14 is a cross-sectional view of the underground heat exchange device 100 including the gap maintaining member 170 It is a sectional view shown, and FIG. 15 is a front view showing another example of the space keeping member 170'.

13 and 14, the heat exchange device 100 of the present invention includes a gap maintaining member 170 coupled to the heat exchange tube 120.

The heat exchange pipe 120 surrounds and surrounds the supply pipe 110, the reverse pipe 130, and the water return pipe 140, and includes a plurality of peaks along the length direction of the supply pipe 110, the reverse pipe 130, and the water return pipe 140.山部) (121) and is arranged in a spiral.

The gap maintaining member 170 is coupled to the heat exchange tube 120 to maintain a gap along the length direction of the heat exchange tube 120. Specifically, the spacing member 170 may maintain and support the spacing between the adjacent peaks 121 of the heat exchange tube 120 at a predetermined spacing.

When the heat exchange device 100 of the present invention is buried in the ground, the space maintaining member 170 prevents the spiral heat exchange tube 120 from moving by the surrounding underground environment. As a result, the heat exchange tube 120 may be supported at predetermined intervals, and a problem in that heat exchange efficiency of the underground heat exchange device 100 of the present invention is deteriorated may be prevented. In addition, the underground heat exchange apparatus 100 of the present invention has the advantage that mechanical stability is high because the spiral heat exchange tube 120 can be firmly supported without moving by including the spacing member 170.

The spacing member 170 may be formed in a rod shape and may be attached along the plurality of peaks 121 of the heat exchange tube 120. At this time, the gap maintaining member 170 may be attached along the inner periphery of the spiral heat exchange tube 120 as shown in FIG. 14(a), and the spiral heat exchange tube 120 as shown in FIG. 14(b) It can also be attached along the outer periphery.

The spacing member 170 may be a reinforcing bar commonly used as a reinforcing bar, and such a reinforcing bar structure may be attached to the heat exchange tube 120 in a welding manner. However, the present invention is not limited thereto, and any member and attachment method that is attached along the plurality of peaks 121 of the heat exchange tube 120 to support the spiral heat exchange tube 120 may be employed.

Meanwhile, the spacing member 170' may have a structure as shown in FIG. 15.

Referring to FIG. 15, an uneven portion 171 ′ having a plurality of protrusions formed on the spacing member 170 ′ is formed, and this uneven portion 171 ′ is formed to correspond to the shape of the spiral heat exchange tube 120. It is desirable to be. A plurality of peaks 121 of the heat exchange tube 120 may be inserted into the uneven portions 171' of the space maintaining member 170'.

The spacing member 170 ′ may maintain the spacing between the mutually adjacent peaks 121 of the heat exchange tube 120 at a predetermined spacing like the spacing member 170 in FIG. 13.

Embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

100… Underground heat exchanger
A… Delivery module
B… Heat exchange module
C… Return module
110… Supply pipe
120… Heat exchange tube
121 ... Obstetrics
130… Reverse Hall
140… Return pipe
150… flange
151 ... hall
152 ... Bolted part
160… Tube separation member
161 ... hall
162 ... spin
170 ... Spacing member
170'… Spacing member
171'… Irregularities
180… Socket
181 ... Coupling groove
182 ... Communication ball
190 ... Cap

Claims (13)

A supply pipe for supplying the heat medium from the outside to the ground;
A heat exchange tube connected to the supply pipe to receive a heat medium and heat exchange between the heat medium;
A reverse pipe connected to the heat exchange pipe and collecting the heat exchanged heat medium;
A return pipe connected to the reverse pipe and flowing out the heat medium from the ground to the outside; And
A plurality of cap portions coupled to one end of the supply pipe to close one end of the supply pipe, and coupled to one end of the reverse pipe to close one end of the reverse pipe; Including,
The heat exchange pipe is arranged in a spiral so as to surround and surround the supply pipe, the water return pipe, and the reverse pipe, and form a plurality of ridges along the length direction of the supply pipe, the water return pipe, and the reverse pipe,
The heat medium flows downward along the heat exchange pipe, flows into the reverse pipe, and then flows upward through the water return pipe. The method of claim 1,
A gap maintaining member disposed along the longitudinal direction of the heat exchange tube and coupled to the plurality of peaks so that a gap between the plurality of peaks is fixed; Underground heat exchanger device further comprising a. The method of claim 2,
The spacing member,
An underground heat exchanger device formed in a rod shape and attached along the plurality of ridges at an inner or outer periphery formed by the spiral heat exchange tube. The method of claim 2,
The spacing member,
An underground heat exchanger apparatus including an uneven portion formed to correspond to the shape of the spiral heat exchange tube and being formed to be inserted and accommodated in the uneven portion of the plurality of acid portions. The method of claim 1,
A delivery module that supplies a heat medium and returns the heat exchanged heat medium to the outside;
A heat exchange module for performing heat exchange of the heat medium supplied from the transfer module and transferring the heat exchanged heat medium to the transfer module; And
At least one return module which passes through the heat exchange module and converts the flow of the heat exchange medium to be transferred to the heat exchange module; Including,
The transfer module and the return module are formed to be detachable from each other with the heat exchange module. The method of claim 5,
The heat exchange module includes: a pipe spacer member configured to allow the supply pipe, the reverse pipe, and the water return pipe to be spaced apart from each other by a predetermined distance; Including,
The tube spacing member is disposed adjacent to a point at which the heat exchange pipe is connected to the supply pipe or a point at which the heat exchange pipe is connected to the reverse pipe. A supply pipe for supplying the heat medium from the outside to the ground;
A heat exchange tube connected to the supply pipe to receive a heat medium and heat exchange between the heat medium;
A reverse pipe connected to the heat exchange pipe and collecting the heat exchanged heat medium; And
A return pipe connected to the reverse pipe and flowing out the heat medium from the ground to the outside; Including,
The heat exchange pipe is arranged in a spiral so as to surround and surround the supply pipe, the water return pipe, and the reverse pipe, and form a plurality of ridges along the length direction of the supply pipe, the water return pipe, and the reverse pipe,
The heat medium flows downward along the heat exchange pipe and flows into the reverse pipe, and then flows upward through the water return pipe,
A delivery module that supplies a heat medium and returns the heat exchanged heat medium to the outside;
A heat exchange module for performing heat exchange of the heat medium supplied from the transfer module and transferring the heat exchanged heat medium to the transfer module; And
At least one return module which passes through the heat exchange module and converts the flow of the heat exchange medium to be transferred to the heat exchange module; Including,
The transfer module and the return module are formed to be detachable from each other with the heat exchange module,
The heat exchange module includes: a pipe spacer member configured to allow the supply pipe, the reverse pipe, and the water return pipe to be spaced apart from each other by a predetermined distance; Including,
The tube spacing member is disposed adjacent to a point at which the heat exchange pipe is connected to the supply pipe or a point at which the heat exchange pipe is connected to the reverse pipe,
The tube spacer member is formed in a disk shape and includes a plurality of holes formed to pass through the supply pipe, the reverse pipe, and the water return pipe, and at least one protrusion protruding in the center direction of the plurality of holes. . The method of claim 5,
The delivery module,
The supply pipe and the water return pipe of the heat exchange module are formed to extend in a direction opposite to the direction in which the return module is attached and detached, and configured to transfer the heat medium from the outside to the heat exchange module and transfer the heat medium from the heat exchange module to the outside, Underground heat exchanger. The method of claim 8,
The transfer module, the heat exchange module, and the return module are sequentially arranged. The method of claim 8,
A flange or socket part is interposed between the transfer module and the heat exchange module and between the heat exchange module and the return module, and the transfer module, the heat exchange module and the return module are detachable by fastening the flange or the socket part. The underground heat exchanger is configured to be. delete delete delete

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