KR101238875B1 - Ground heat transfer pipe with mounter type spacer - Google Patents

Abstract

PURPOSE: A ground heat exchange pipe with a mounter type spacer is provided to vary the shape of a connector which connects the intervals in a mounter and to improve convenience during grouting work by using space which is formed inside according to the shape of the connector. CONSTITUTION: A ground heat exchange pipe with a mounter type spacer comprises a mounter(20), a connector(30), an auxiliary connector, and a reinforcing force part. The mounter comprises a facing portion(21) which is closely adhered to the surface where a first pipe and a second pipe face each other; and a separation portion(22) which is closely adhered to the extended surface where the first and second pipes do not face each other. The mounter is detachably coupled with the outer circumference of the first and second pipes. The connector comprises an extension part of the connector which has the curvature and is extended to the outside from one end of the mounter; and a connecting portion. An auxiliary space is formed to the inner side of the extended line of the connector. The connector includes penetrating part which one end is penetrated. The auxiliary connector connects the opposing end of the mounter which connects the connector and is convexly extended to the outer circumference from the tangent line of the end part of the mounter. The reinforcing force part is adhered to the inner side surface of the boundary between the extension part and the connecting portion of the connector.

Description

Ground heat exchanger pipe with mounter type spacer {GROUND HEAT TRANSFER PIPE WITH MOUNTER TYPE SPACER}

The present invention is an underground heat exchanger pipe having a mounter type spacer, and more particularly, to prevent the waste heat supply pipe (first pipe) and the geothermal heat recovery pipe (second pipe) constituting the underground heat exchange pipe from being unnecessarily contacted or twisted with each other. In order to provide a spacer for maintaining a space between the first and second pipes at a predetermined interval, the spacer is mounted in a mounter type detachably fitted to the outer periphery of the first and second pipes while providing ease of construction It is to provide an underground heat exchanger pipe that simultaneously seeks the convenience of the grouting method.

Unlike thermal energy, which requires fuel, geothermal energy does not require fuel and does not cost much to establish power generation facilities compared to hydro energy, which requires huge costs for large-scale power generation facilities such as dam construction. Although it is in the spotlight, the geothermal power generation terrain is limited and the efficiency is not high.

Such geothermal energy can be used for cooling and heating by using the temperature difference of water, groundwater, underground heat, etc. In such geothermal power generation system, the geothermal energy system is divided into closed circuit and open circuit according to the circuit configuration of geothermal heat exchange pipe that recovers geothermal heat. .

In general, the closed circuit that is widely used is a pipe is composed of a closed type, the fruit to recover the geothermal heat is circulated in the pipe, the high density polyethylene (HDPE) is mainly used.

Specifically, the geothermal heat exchange pipe is composed of a waste heat supply pipe that can transfer the waste heat of the ground or building underground, and a geothermal recovery pipe that circulates waste heat introduced along the waste heat supply pipe underground and flows it to the building side. The geothermal heat recovery pipe has a U-shaped connecting pipe.

Since the waste heat supply pipe and the geothermal heat recovery pipe are installed side by side in a vertical direction on one bore hole, the geothermal heat exchange pipe is twisted with each other when the waste heat supply pipe and the geothermal heat recovery pipe are twisted together when inserted into the borehole. As a result, the heat exchange performance is deteriorated due to thermal interference between the pipes by being caught, twisted or adhered to the outer wall of the bore hole.

In addition, when a tremie pipe is inserted into a bore hole for grouting after installation of the geothermal heat exchange pipe, the twisted pipe between the waste heat supply pipe and the geothermal recovery pipe and irregular directionality causes the tremi pipe to reach the bottom of the bore hole. There is a frequent occurrence that the grouting cannot be done firmly because it is not clearly reached.

In order to prevent such a problem, the heat exchange pipe for the geothermal heat exchanger of the domestic patent No. 1044737 is connected to the waste heat supply pipe and the geothermal heat return pipe, and the guide surface concave in a ∪ or ∩ shape with the outer surface of the waste heat supply pipe, the geothermal return pipe. And a pipe connecting rod forming a rail for continually guiding the lower end of the tremie pipe in a vertical direction, wherein a plurality of protrusions are formed around the outer circumferential surface of the waste heat supply pipe and the geothermal return pipe to prevent twisting. And it has been published that it has the effect of strengthening the fixing force according to the volume expansion when grouting.

In the above technology, the pipe connecting part is connected to the waste heat supply pipe and the geothermal return pipe to provide a role as a spacer. The pipe connecting part is continuously connected along the length direction of the waste heat supply pipe and the geothermal return pipe. Although this may provide a problem, the result is that the waste heat supply pipe and the geothermal return pipe are connected without being spaced apart, and the probability of thermal interference between each other is increased, thereby lowering the power generation efficiency.

Therefore, there is a need to develop a new and advanced geothermal heat exchanger pipe that has a spacer to properly maintain the waste heat supply pipe and the geothermal return pipe to minimize the thermal interference between the two and to promote the convenience and stability of the grouting construction. It is a reality.

The present invention has been made in order to overcome the problems of the above technology, the connection between the waste heat supply pipe and the geothermal recovery pipe, but a plurality of connections at regular intervals in the longitudinal direction of both so as not to interfere with the thermal interference between the two / It is a main object to provide a geothermal heat exchange pipe having a spacer that performs an anti-twist function.

Another object of the present invention is to provide a mounter detachably coupled to the waste heat supply pipe and the geothermal heat recovery pipe to increase the convenience of installation as well as cost savings.

Still another object of the present invention is to not only vary the shape of the connector connecting the mounters, but also to facilitate convenience in grouting construction by the space formed therein according to the shape of the connector.

A further object of the present invention is to provide a structure that is optimized for retaining elasticity and maintaining tension, to ensure structural stability as well as to ensure overall durability of the spacer.

In order to achieve the above object, the underground heat exchanger pipe having the mounter type spacer according to the present invention is installed in the first and second pipes inserted into the bore holes, and can be attached to and detached from each of the outer peripheral surfaces of the first and second pipes. Mounter coupled; The connector for connecting the mounter, characterized in that coupled to the outer peripheral surface of the plurality of first and second pipes at regular intervals along the extending direction of the first and second pipes.

The mounter may include an opposing portion in close contact with the surfaces of the first and second pipes facing each other, and a spaced portion in close contact with a portion extending from the opposing portion to a surface not facing each other. And surround a portion of the outer circumferential surface of the first and second pipes.

In addition, the connector, characterized in that it further comprises a through portion formed to penetrate one side, and a rounding taper portion extended to concave rounding so as to reduce the width at the joining point with the mounter.

In addition, the connector is composed of an extension part which is curvaturely extended outward from one end of the mounter, and a connecting part connecting the end of the extension portion, the auxiliary space is formed inside the extension line of the mounter and the connector. It is done.

The spacer may further include an auxiliary connector connecting opposite ends of the mounter to which the connector is connected and extending outwardly from the tangent of the mounter.

In addition, the connector, one side end of the mounter is convexly connected to the outside, and the spacer further comprises an auxiliary connector for convexly connecting the opposite end of the mounter connected to the connector to the outside, the spacer It is characterized by consisting of a symmetrical structure around the horizontal axis.

According to the underground heat exchange pipe provided with the mounter type spacer according to the present invention,

1) It is possible to maintain a constant interval without connecting the first and second pipes continuously to minimize thermal interference while preventing close or twist of the first and second pipes,

2) not only to facilitate construction and assembly by a mounter detachably coupled to the outer circumferential surface of the first and second pipes,

3) The various shapes of the connector connecting the mounter not only ensures a strong coupling relationship between the first and second pipes by strengthening durability, improving structural stability and maintaining tension.

4) The reinforcement space and auxiliary space provide convenience of grouting construction and can replace the role of tremi pipe.

5) Provides the effect of ensuring structural stability and durability by members such as auxiliary connectors and supporters.

1 is a perspective view and a cross-sectional view showing a basic embodiment of an underground heat exchange pipe with a mounter type spacer according to the present invention.
2 is a cross-sectional view showing a first modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention.
3 is a cross-sectional view of a second modified embodiment of an underground heat exchanger pipe with mounter type spacers in accordance with the present invention.
4 is a perspective view and a cross-sectional view showing a third modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention;
5 is a perspective view and a sectional view showing a fourth modified embodiment of the underground heat exchanger pipe with mounter type spacer according to the present invention;
6 is a sectional view showing a fifth modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention;
7 is a sectional view showing a sixth modified embodiment of the underground heat exchanger pipe with mounter type spacer according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale and wherein like reference numerals in the various drawings refer to like elements.

1 is a perspective view and a cross-sectional view showing a basic embodiment of an underground heat exchange pipe having a mounter type spacer according to the present invention.

Underground heat exchange pipe is inserted into the bore hole (5), basically waste heat supply pipe that transfers the waste heat of the ground to the ground, and waste heat introduced through the waste heat supply pipe is heat exchanged underground and then transferred to the ground. It consists of a geothermal recovery pipe, and a connecting pipe for connecting the waste heat supply pipe and the lower end of the geothermal recovery pipe, for example in a U shape.

In the present invention, the waste heat supply pipe is defined as the first pipe 1 and the geothermal heat recovery pipe as the second pipe 2.

These first and second pipes (1, 2) are formed along the bore hole (5) at regular intervals, and are formed to extend substantially in parallel at regular intervals, so that they face each other and not The outer circumferential surface of the first and second pipes 1 and 2 is configured.

The spacer 10 according to the present invention basically includes two mounters 20 and two mounters 20 detachably fitted to the first and second pipes 1 and 2, respectively. It consists of a connector (connector) 30 for connecting, provided with a plurality of spaced apart at regular intervals along the extending direction of the first and second pipes (1, 2) having a space (15) between each spacer (10) It is based on.

The mounter 20 of the present invention covers each of the first and second pipes 1 and 2 on the outer circumferential surfaces of the first and second pipes 1 and 2, respectively, and surrounds a part of the surfaces not facing each other. It is formed in total of two (first and second pipes) so as to be detachably coupled. Usually, since the first and second pipes (1 and 2) are formed in a cylindrical shape, It extends rounded along the curved surface but does not surround the entire outer circumferential surface of the first and second pipes (1, 2), but the one side is open, that is, the mutually facing surfaces of the first and second pipes (1, 2) and It is made to have a shape similar to 'C' to surround its surroundings.

If the first and second pipes (1, 2) is not a cylindrical shape but is a rectangular parallelepiped type, it is also possible to have an open side, such as a 'c' shape, and ultimately the mounter 20 of the present invention. ) Has various shapes such as flat and curved surfaces corresponding to the shapes of the first and second pipes 1 and 2 regardless of the cross-sectional shape of the first and second pipes 1 and 2. It is formed so as to cover up to a part of the facing surface of the side facing away from the opposite side and the facing side of, 2).

Here, when the mounter 20 has a size limited to a part of the surface A of the first and second pipes 1 and 2 facing each other and the area thereof, the mounter 20 is the first and second pipes 1 and 2. 2) there is a possibility that the first and second pipes (1, 2) are mutually separated from each other, because there is a possibility that the first and second pipes (1, 2) may be separated from each other. It is to be wrapped to a certain side (B) to the outside facing away without facing so as to be able to be stably coupled to the first and second pipes (1, 2) in a state of securing a sufficient coupling area.

In addition, when the entire outer circumferential surface of the first and second pipes 1 and 2 is wrapped, not only detachment is performed, but also the thermal interference of the first and second pipes 1 and 2 may result in the configuration of the mounter 20. Based on the drawings, it is preferable that the portion B can be made smaller in area than A.

In order to organize this more systematically, the mounter 20 does not face the opposing portion 21 and the first and second pipes 1 and 2 that surround the mutually facing surfaces of the first and second pipes 1 and 2. It is composed of a spaced portion 22 surrounding the surface, the opposing portion 21 and the spaced portion 22 may be modified in various structures in the following embodiments.

That is, in the mounter 20 according to FIG. 1, the separation part 22 has a form configured to extend in correspondence with the surface shape of the first and second pipes 1 and 2 at both ends of the opposing part 21.

By the shape and configuration of the mounter 20, it is not necessary to bring about the inconvenience of complicated construction while using it as it is without the hassle of changing the structure of the known first and second pipes 1 and 2 separately. Due to this, the mounter 20 can be fitted to the first and second pipes 1 and 2, and at the same time, a detachable fitting connection relationship can be provided to enable a convenient release.

The connector 30 of the present invention is configured to connect the mounter 20 and provides a role of providing a physical structure capable of maintaining the first and second pipes 1 and 2 at regular intervals.

In the embodiment of FIG. 1, the connector 30 extends in the form of a straight line at one side of the mounter 20, that is, at the opposite side of the mounter 20, such a connector 30. Is additionally provided with a penetrating portion 11 having at least one penetrating size (in the drawing, penetrating in the horizontal direction to widen the penetrating area, but a vertical penetrating structure is also possible).

The penetrating portion 11 minimizes the area of the connector 30 to minimize thermal interference between the first and second pipes 1 and 2 and fills the penetrating portion 11 with the filling material during grouting. In addition to providing a foundation for stably mounting the geothermal heat exchange pipe within (5), it is possible to provide the characteristics of grouting construction through such a penetrating portion 11 without using a tremi pipe. .

The mounter 20 and the connector 30 may be manufactured by a dual injection process or may be combined by an adhesive method. The mounter 20 and the connector 30 may have a curved shape mainly according to the curved shape of the first and second pipes 1 and 2. When the step is angled at the portion extending from the mounter 20 to the connector 30, the external pressure is increased in this portion, so that the mounter 20 and the connector 30 may be separated, so that the connector ( Both ends of the 30, that is, the portion connected to the mounter 20 is preferably formed as a rounding taper portion 33 as shown in FIG.

The rounding taper portion 33 refers to a configuration in which the width of the rounding taper portion 33 is extended (that is, tapered) at the coupling point of the mounter 20, but is rounded in a concave shape.

According to the rounding taper part 33, the outer taper portion 33 is connected to the mounter 20 in a larger area, but does not step apart so that the coupling portion of the mounter 20 and the connector 33 is angulated so that external impact is reduced by external force. The mounter 20 and the connector 30 provide a property to be firmly coupled without being easily separated.

The spacer 10 including the mounter 20 and the connector 30 is not formed along the entire extension direction of the first and second pipes 1 and 2, but is not formed in the first and second pipes 1 and 2. It is formed in plural at regular intervals in the extending direction, to minimize the connection area of the first and second pipes (1, 2) to prevent the occurrence of both thermal interference and heat loss.

That is, the spacer 10 of the present invention extends a predetermined pattern or a specific portion while maintaining a space corresponding to a predetermined height as the space 15 based on the longitudinal extension lines of the first and second pipes 1 and 2. By preventing the problem that the first and second pipes (1, 2) is twisted or tightly provided while providing a role of minimizing the thermal interference caused by the connection of both.

The spacer 10 may be made of the same material as that of the first and second pipes 1 and 2, or may be made of another material, if necessary, and may be made of a synthetic resin material or a metal material capable of retaining a certain bending property and elasticity. Do.

Figure 2 is a perspective view and a cross-sectional view showing a first modified embodiment of the underground heat exchange pipe having a mounter type spacer according to the present invention.

In the first modified embodiment according to FIG. 2, the connector 30 extends outwardly along the extension direction of the mounter 20 of the spacer 22 at one end of the mounter 20, and It consists of a connecting portion 32 for connecting both ends of the extension (31).

In this case, the connecting part 32 is connected to one end of the opposing part 21 or one end of the spaced apart part of the configuration of the mounter 20, and when the connecting part 32 is connected to the opposing part 21, the mounter 20 is connected. The spacer 22 extends only at one end of the opposing portion 21, and when the spacer 22 is connected to the spacer 22, the spacer 22 connected to the connecting portion 32 is connected to another spacer ( With an extension length shorter than 22).

That is, the mounter 20 according to FIG. 1 is spaced apart from each other with respect to the opposing part 21 and the spaced part 22 extends to the outside with respect to the surfaces facing each other of the first and second pipes 1 and 2. While the spaced portion 22 is symmetrically formed to wrap around the surface of the first and second pipes 1 and 2, the mounter 20 according to FIG. 2 is spaced only at one side thereof. 1 extends longer than the spaced portion 22 of FIG. 1, or has a difference in length between the two spaced portions 22 so as to deviate approximately 90 degrees outward from the opposite sides of the 1,2 pipes 1, 2; The difference is that the area is mainly covered.

 In particular, the connector 30 of FIG. 2 does not connect one side of the mounter 20 in a straight line, but the connecting portion 32 connects the end portion extended outwardly by the extension portion 31 to the extension portion 31. An auxiliary space 40 is further provided by the extension line of the 31 and the connecting portion 32.

At this time, the extension part 31 may be extended to be curved to spread outward, and the connecting part 32 may also be connected to the edge of the extension part 31 in a rounded manner rather than being connected to the angle of the fork. Preferably, the connecting portion of the extension part 31 and the connecting part 32 is formed of a chamfered part 34 which is chamfered to be rounded.

According to this first variant, the auxiliary space 40 is provided with a stable space into which a separate tremi pipe for grouting is inserted or the auxiliary space 40 serves as a tremi pipe without a tremi pipe. It is possible to replace the, and because the extension line of the extension portion 31 and the connecting portion 32 has a structure as if it is inflated while maintaining a feeling of tension, it is possible to simultaneously maintain elasticity and tension force, the mounter 20 The first and second pipes 1 and 2 can be more firmly engaged, and in particular, the chamfered structure of the chamfer portion 34 allows the connector 30 to maintain proper elasticity and tension while maintaining the connector 30. The curved structure of the provides a property to prevent the problem of being easily broken or bent.

Alternatively, it is also possible to thicken the connection portion of the extension portion and the connecting portion without such a chamfer portion to prevent breakage when the external pressure is concentrated on the connection portion.

Figure 3 is a perspective view and a cross-sectional view showing a second modified embodiment of the underground heat exchanger pipe with a mounter type spacer according to the present invention.

The second modified embodiment according to FIG. 3 is convexly extended outwardly from one end of the mounter 20 to which the connector 30 is not connected in a state including the configuration and structure of the modified embodiment of FIG. 2. 20) It is further provided with an auxiliary connector 50 for connecting each.

This modified embodiment according to FIG. 3, while seeking structural stability as compared to the modified embodiment according to FIG. 2 biased to one side, the reinforcing space between the auxiliary connector 50 and the mounter 20 in addition to the auxiliary space 40 ( 60) to provide the convenience of using the reinforcement space 60 as a substitute for the tremi pipe when grouting, and the auxiliary connector 50 is extended from the tangent of the mounter 20. It provides a property that the area in contact with the first and second pipes (1, 2) can be reduced to minimize thermal interference.

4 is a perspective view and a cross-sectional view showing a third modified embodiment of the underground heat exchanger pipe with a mounter type spacer according to the present invention.

The third modified embodiment of the spacer according to FIG. 4 has a structure similar to the embodiment of FIG. 2, with the extension 31 of the connector 30 extending outwardly at each end of the mounter 20. The structure is shown.

As a result, as the volume of the auxiliary space 40 increases, the extension end portion of the extension portion 31 occupies a large area corresponding to the width between the ends (separation portions) of the mounter 20. By expanding the volume of the reinforcement space 60 to ensure the convenience of grouting construction, and at the same time as the size of the connector 30 to increase to the level corresponding to the mounter 20 can be reinforced structural stability unbiased to one side Provide properties to ensure that

At this time, the connector 30 is made of an elastic material so as not to be broken or broken when taking the structure as shown in FIG.

In addition, a reinforcing piece 80 may be additionally attached between the extension part 31 and the connecting part 32.

The reinforcing piece 80 is attached to the inner surface portion of the curved boundary portion between the extension portion 31 and the connecting portion 32, and may be composed of any one having a hollow portion or an inner portion thereof. have.

Since the boundary portion between the extension portion 31 and the connecting portion 32 is opened at a large angle, the reinforcement piece 80 prevents fatigue from being easily deformed by the external force and at the same time prevents the deformation easily by the external force. Provides a role to reinforce durability. The reinforcing piece 80 may be selectively provided in the embodiment described later in which the extension portion 31 and the connecting portion 32 are opened at a large angle as in the embodiment of FIG. 4.

5 is a perspective view and a cross-sectional view showing a fourth modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention.

The fourth modified embodiment according to FIG. 5 is based on the embodiment of FIG. 2 or FIG. 4, but in the spacer 10 as in the above-described embodiment, a supporter 70 connecting between the connectors 30 is provided. It is provided further.

The supporter 70 extends from any one of the boundary portions of the mounter 20 and the connector 30 or the opposing portion 21 of the mounter 20 and the extension portion 31 of the connector 30 so that the reinforcement spacing tm It has a shape that connects both across the (60).

When the supporter 70 has a curved shape in which the extension part 31 extends outward to secure the reinforcement space 60 or the connector 30 is bent outward so that the volume of the reinforcement space 60 is large, The tension is applied to the extension of the connector 30 to prevent the occurrence of fatigue, and as a result serves to present a more stable and durable structure of the connector 30.

6 is a perspective view and a cross-sectional view showing a fifth modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention.

FIG. 6 is a fused form of the modified embodiment of FIGS. 3 and 4, and provides an auxiliary connector 50 and a structure in which the extension part 31 of the connector 30 is spread outward.

Again, the auxiliary connector 50 provides overall structural stability to the spacer of the present invention and the extension 31 expands the volume of the reinforcement space 60 while corresponding to the width of the mounter 20. It is configured to open to provide a role of suggesting a stable structure rather than a biased or unbalanced structure to one side.

7 is a perspective view and a cross-sectional view showing a sixth modified embodiment of the underground heat exchange pipe with mounter type spacer according to the present invention.

The sixth modified embodiment according to FIG. 7 is a fusion of the structures of FIGS. 1 and 3, and the auxiliary connector 50 and the connector 30 are symmetrical with respect to the line crossing the center of the mounter 20 horizontally. to provide.

That is, the auxiliary connector 50 is formed to be convex outward from the top of the mounter 20 with reference to FIG. 7, and at the same time, the connector 30 is extended to be convex outward from the bottom of the mounter 20. In addition, the connector 30 and the auxiliary connector 50 are formed symmetrically with each other, which causes the auxiliary space 40 to have a closed space having a sufficient volume, thereby trembling this space in the grouting construction. Efficient use without pipes, or provide enough space for Tremi pipes to be reliably inserted.

The underground heat exchange pipe having the spacer 10 having various configurations and shapes as described above has been described. The core idea of the present invention is that the mounter 20 is detachable to the first and second pipes 1 and 2. And the connector 30 connects the mounter 20 and provides an auxiliary space 40 having various shapes in an extension line with the mounter 20 to provide convenience in grouting the auxiliary space 40. It is to be understood that various modifications which are not limited to the above and not described in the above description in the state based on the core technical idea are also included in the technical idea of the present invention.

As described so far, the configuration and operation of the underground heat exchanger pipe having the mounter type spacer according to the present invention have been described in the above description and the drawings, but this is merely an example and the idea of the present invention is described in the above description and the drawings. Without being limited, various changes and modifications are possible without departing from the technical spirit of the present invention.

1: first pipe 2: second pipe
5: bore hole 10: spacer
11: penetrating portion 15: space
20: Mounter 21: Opposing Part
22: separation part 30: connector
31: extension part 32: connecting part
33: rounding taper portion 34: chamfer portion
40: auxiliary space 50: auxiliary connector
60: reinforcement space 70: supporter
80: reinforcing piece

Claims (8)

An underground heat exchange pipe having a mounter-type spacer coupled to the outer circumferential surface of the first and second pipes at a plurality of intervals along the extension direction of the first and second pipes inserted into the boreholes.
The opposing part is in close contact with the surface facing each other and the first and second pipes, and the spacing part is in close contact with a portion extending from the opposing part to the surface not facing each other, A mounter detachably coupled to each of the outer circumferential surfaces of the pipe;
Comprising an extension portion extending from the one end of the mount to the curvature and a connecting portion connecting the end portion of the extension portion is formed with an auxiliary space formed inside the extension line of the mounter and the connector, one side has a through portion formed through One connector;
An auxiliary connector connecting opposite ends of the mounter to which the connector is connected, wherein the auxiliary connector extends outwardly at a tangent of the end of the mounter;
A reinforcing piece attached to an inner surface portion of a boundary portion between the extension portion and the connecting portion of the connector;
Underground heat exchange pipe having a mounter type spacer, characterized in that it comprises a spacer comprising a. The method of claim 1,
The connection portion of the extension portion and the connecting portion,
An underground heat exchange pipe having a mounter type spacer, characterized in that the chamfer portion is rounded and chamfered. The method of claim 1,
The spacer
And a supporter extending horizontally across the reinforcement space at one side of the mounter to connect the mounter, wherein the underground heat exchanger pipe having a mounter type spacer is further included. delete delete delete delete delete

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