KR102233883B1 - constantflow control unit for open type geothemal heat exchanging device and open type geothemal heat exchanging device having the same - Google Patents

Abstract

The present invention relates to a constant flow rate control unit for an open-type ground heat exchanger and an open-type ground heat exchanger including the same. According to the present invention, the constant flow rate control unit includes: a body connected to a water inflow pipe connected to the inside of a deep well, while providing flow paths, which lead underground water introduced through the water inflow pipe and underground water introduced through a return pipe connected from an external heat exchanger to flow separately, and discharging the underground water introduced through the return pipe to the inside of the deep well; a lifting member inserted into the body, while controlling an opening width of the flow path where the underground water introduced through the water inflow pipe flows, by being lifted up by water pressure from the underground water introduced through the water inflow pipe, and opening and closing the flow path where the underground water introduced through the return pipe flows; and a control member combined with an upper part of the body to be liftable to control a lifting width of the lifting member through pressurization by lifting. Therefore, the present invention is capable of reducing costs for materials, construction and personnel by simplifying the whole structure.

Description

Constant flow control unit for open type geothemal heat exchanging device and open type geothemal heat exchanging device having the same}

The present invention relates to an open-type underground heat exchange device, and more particularly, by smoothly supplying and returning groundwater, not only can the heat exchange by heat of the groundwater be continuously performed, but also the return flow rate is controlled by itself, Regardless of the height difference, the constant flow rate is exchanged, minimizing the installation of a separate construction member to control the amount of water exchanged, thereby simplifying the entire structure, thereby reducing material requirements, construction costs, and labor costs for an open underground heat exchanger. It relates to an intermittent unit and an open underground heat exchanger having the same.

Geothermal energy is one of the non-polluting energy that replaces fossil fuels and nuclear power.

Geothermal energy, which uses groundwater and heat from the ground, is renewable as well as eco-friendly, and thus, interest in its use is increasing in recent years.

Meanwhile, the use of geothermal energy is achieved through heat exchange through a heat exchange device.

At this time, the heat exchanger is a closed underground heat exchanger that buries a pipe for heat exchange there after excavating deeply below the surface, and after pumping groundwater from the deep well through a pump and a pumping pipe, the heat of the groundwater is transferred to the ground. It can be classified as an open-type underground heat exchanger that returns the groundwater that has been heat-exchanged after being used in the heat pump of, and returns it back to the inside of the deep well through the return pipe.

Here, it is known that an open-type underground heat exchanger using groundwater as a circulation medium has superior thermal efficiency compared to a closed-type underground heat exchanger in which an antifreeze or the like circulates through a fluid circulation pipe and indirectly contacts underground heat.

In other words, using antifreeze, etc., a closed underground heat exchanger installed at a depth of approximately 150 meters from the ground acquires approximately 3RT of heat energy (approximately 10 pyeong for cooling and heating per RT), while using groundwater directly, but approximately 500 from the surface. The open-type underground heat exchanger installed at a depth of meters acquires approximately 30RT of heat energy. Except for the hassle of drilling, the thermal efficiency of the open-type underground heat exchanger is significantly higher than that of the closed-type underground heat exchanger.

However, the conventional open-type underground heat exchanger has a problem in that it is troublesome to supply water and return water.

That is, as shown in FIG. 8, the conventional open underground heat exchange device includes a water supply pipe 300 connected to each of a plurality of deep wells 100 to the water supply header 600 and the return header 700 disposed before and after the heat exchanger 200, as shown in FIG. The water return pipe 400 is connected, and an electric valve (not shown in the drawing) and a manual valve (not shown in the drawing) for controlling water supply and return were installed in the water supply pipe 300 and the return pipe 400, respectively. Since it is required to manipulate a plurality of valves during an intermittent operation, there is a considerable problem of hassle.

In order to solve such a problem, the water supply pipe 300 and the water return pipe 400 are connected by groups to the branch lines 610 and 710 of the water supply header 600 and the water return header 700 as shown in FIG. 9, Electric valves (not shown) and manual valves (not shown) are installed in each of the branch lines 610 and 710 to reduce the number of valves installed. There was a problem that caused the hassle.

In addition, when the water supply header 600 and the return header 700 are branched to connect the water supply pipe 300 and the water return pipe 400 to each branch line 610 and 710 by group, either branch line 610 or 710 When the pump (not shown in the drawing) of the water supply pipe 300 connected to the water supply pipe 300 and the water return pipe 400 is broken, the water supply is blocked in the core 100 while the water return is continued, causing an overload. There was a problem in that it was difficult to regulate water supply and water exchange such as flow generation.

In order to solve such a problem, when the pump of a specific core 100 connected to one branch line 710 for water exchange is stopped due to a failure, the pump of the other deep well 100 connected to the branch line 710 is stopped. If so, overflow can be prevented, but there is a problem in that thermal efficiency is deteriorated since heat exchange through the heat exchanger is rapidly reduced because water cannot be supplied by stopping the pump.

For the above reasons, in the relevant field, the supply and return of groundwater is smooth, so that heat exchange by heat of the groundwater can be continuously performed, and the flow rate of the return is controlled by itself, so that the constant flow rate is returned regardless of the difference in height of the ground on which the deep well is installed. As a result, the installation of a separate construction member for controlling the amount of water exchange is minimized and the overall structure is simplified, so that the development of a constant flow rate control unit for an open underground heat exchanger and an open heat exchanger that can reduce material requirements, construction costs, and labor costs. It has been attempting, but up to now, satisfactory results have not been obtained.

Republic of Korea Patent Publication No. 10-1403041

The present invention has been proposed in order to solve the problems of the prior art as described above. By smoothly supplying and returning groundwater, not only can the heat exchange by heat of the groundwater be continuously performed, but also the return flow rate is controlled by itself. An open underground heat exchanger that reduces material and construction costs and labor costs as the entire structure is simplified by minimizing the installation of a separate construction member to control the amount of water, as the constant flow rate is returned regardless of the height difference of the installed ground. It is an object of the present invention to provide a constant flow rate control unit and an open underground heat exchanger having the same.

In order to achieve the above object, the present invention,

A body for supplying groundwater flowing in through a water inlet pipe leading to the inside of the deep well into a water supply pipe leading to an external heat exchanger, and introducing groundwater flowing into the inside of the deep well through a water return pipe connected from the external heat exchanger; It is inserted into the body, and as it rises and descends by the hydraulic pressure of the groundwater flowing through the water inlet pipe, the opening width of the passage through which the groundwater flowing through the water inlet pipe flows is adjusted, and flows through the water inlet pipe. An elevating member for opening and closing a passage through which groundwater flows; And an adjustment member that is coupled to the upper end of the body so as to be able to move up and down to adjust the lifting width of the lifting member through pressurization by lifting and lowering.

The body, the first flow passage in communication with the water inlet pipe, the inlet portion and the outlet portion orthogonal to each other; A second passage communicating with the water return pipe, wherein the inlet portion and the outlet portion are perpendicular to each other, and a stepped portion is formed between the inlet portion and the outlet portion; And a discharge port communicating with the outlet of the second passage.

The body may further include an airtight member disposed at a front end of the outlet portion of the first passage, a front end of the inlet portion of the second passage, and a penetrating portion of the elevating member.

The elevating member may include a bottom plate formed at one end in a longitudinal direction and inserted into the flow path through which groundwater flowing through the water inlet pipe flows; And a head formed between one end and the other end in the longitudinal direction and inserted into a flow passage through which groundwater flowing through the water return pipe flows.

The diameter of the bottom plate is formed smaller than the diameter of the first passage.

The outermost diameter of the head is formed larger than the inner diameter of the stepped portion formed between the inlet and the outlet of the second passage.

The adjusting member may include an elastic body elastically supporting one end of the elevating member protruding above the body; A support coupled to an upper portion of the body to properly erect and support the elastic body; And a pressing rod for pressing the elastic body by being helically bitten by the support.

The constant flow rate control unit for an open-type underground heat exchanger according to the present invention and an open-type underground heat exchanger having the same include a lifting member that ascends and descends by the hydraulic pressure of groundwater flowing through the water inlet pipe. Since the groundwater flow path introduced through the water inlet pipe and the groundwater flow path introduced through the water return pipe are opened, water supply and return water may be desired, thereby heat exchange in the heat exchanger can be continuously performed.

In addition, the constant flow rate control unit for an open underground heat exchange device and an open underground heat exchange device having the same according to the present invention include an adjustment member for adjusting the lifting width of the lifting member, and the lifting width of the lifting member by the adjusting member is adjusted. As a result, the opening width of the groundwater flow path flowing through the water inlet pipe is controlled, as well as the groundwater flow path flowing through the water inlet pipe is opened and closed, so that the return flow rate can be controlled by itself. As member installation is minimized and the overall structure is simplified, it is possible not only to reduce the cost of materials, construction cost, and labor cost, but also reduce the hassle of management.

1 is a cross-sectional view for explaining the structure of a constant flow rate control unit for an open underground heat exchange device according to the present invention.
2 is an exemplary view showing an installation form of a constant flow rate control unit for an open underground heat exchange device according to the present invention.
3 is an exemplary view for explaining the water supply in the constant flow rate control unit for an open underground heat exchange device according to the present invention.
4 is an exemplary view for explaining the water exchange in the constant flow rate control unit for an open underground heat exchange device according to the present invention.
5 is another exemplary view for explaining the water exchange in the constant flow rate control unit for an open underground heat exchange device according to the present invention.
6 is an exemplary view showing the water exchange block in the constant flow rate control unit for an open underground heat exchanger according to the present invention.
7 is a schematic view for explaining the structure of an open-type underground heat exchanger having a constant flow rate control unit for an open-type underground heat exchanger according to the present invention.
8 is a schematic diagram showing an installation form of a water supply pipe and a water return pipe in a conventional open underground heat exchanger.
9 is a schematic diagram showing another installation form of a water supply pipe and a water return pipe in a conventional open underground heat exchanger.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 1, the constant flow rate control unit (A) for an open underground heat exchange device according to the present invention includes a body (10); Elevating member 20; And the adjusting member 30;

The body 10 of the present invention supplies groundwater flowing through the water inlet pipe 110 leading to the inner side of the core 100 to the water supply pipe 300 leading to the external heat exchanger 200, and the external heat exchanger ( Groundwater flowing in through the water return pipe 400 leading from 200) is injected into the deep well 100.

At this time, the body 10, but in communication with the water inlet pipe 110, the inlet portion (11a) and the outlet portion (11b) is orthogonal to the first passage (11); A second flow passage 12 in communication with the water return pipe 400, wherein the inlet portion 12a and the outlet portion 12b are orthogonal, and a stepped portion 12c is formed between the inlet portion 12a and the outlet portion 12b; And a discharge port 13 communicating with the outlet portion 12b of the second passage 12, thereby allowing the flow of groundwater flowing through the water inlet pipe 110 by the first passage 11, and The groundwater flowing through the water return pipe 400 connected from the external heat exchanger 200 is made by the flow path 12, and the groundwater flowing through the water return pipe 400 through the discharge port 13 is discharged. This is done.

Here, groundwater flowing through the water inlet pipe 110 is coupled to the outlet portion 11b of the first flow path 11 by a connection pipe 40 connected to the water supply pipe 300 leading to the external heat exchanger 200 Is supplied to the heat exchanger 200 through the connection pipe 40 and the water supply pipe 300.

In addition, groundwater flowing through the water return pipe 400 is coupled to the inlet portion 12a of the second flow path 12, which is connected to the water return pipe 400 connected from the external heat exchanger 200. Through the connection pipe 40, it is injected into the inner core 100, that is, it is returned.

In addition, the body 10 is an airtight member 14 disposed at the tip of the outlet 11b of the first passage 11, the tip of the inlet 12a of the second passage 12 and the penetrating portion of the elevating member 20 By further including a connection portion of the outlet portion 11b of the first passage 11 and the connection pipe 40 by the airtight member 14, the inlet portion 12a and the connecting pipe 40 of the second passage 12 ) Can be prevented from leaking in the connecting portion and the penetrating portion of the elevating member 20.

On the other hand, the pump 120 is operated by providing a pump 120 at one end of the water inlet pipe 110 in communication with the first flow path 11 of the body 10, and more specifically, at one end located inside the deep well 100 As a result, the groundwater in the deep hole 100 flows into the water inlet pipe 110.

In addition, the body 10 is formed to be inclined on one side where the tip of the inlet portion 12a of the second flow path 12 is located, and more specifically, the upper end is formed in a more protruding shape than the lower end, so that the pipe connection described below Since the member 530 is in inclined contact, the front end of the inlet portion 12a of the second passage 12 may be in close contact with the pipe connection member 530 by the lowering of the body 10.

The elevating member 20 of the present invention is inserted and installed in the body 10, and the groundwater flowing through the water inlet pipe 110 flows as it rises and descends by the hydraulic pressure of the groundwater flowing through the water inlet pipe 110. The opening width of the first passage 11 is adjusted, and the passage through which groundwater flowing through the water return pipe 400 flows, and more specifically, the second passage 12 is opened and closed.

In this case, the elevating member 20 includes a bottom plate 21 formed at one end in the longitudinal direction to flow groundwater flowing through the water inlet pipe 110, and more specifically, a bottom plate 21 inserted into the first passage 11; And a passage formed between one end of the longitudinal direction and the other end and flowing groundwater flowing through the water return pipe 400, more specifically, a head 22 inserted into the second passage 12; The elevation of the elevating member 20 can be made by the hydraulic pressure when the groundwater flowing through the 110) contacts the bottom plate 21, and the head 22 is changed as the head 22 descends by the descending of the elevating member 20. The passage through which groundwater flowing through the pipe 400 flows, more specifically, the second passage 12 may be closed.

Here, the diameter of the bottom plate 21 is formed smaller than the diameter of the first channel 11, so that the bottom plate 21 is lowered at its maximum, through the outer circumference of the bottom plate 21 and the inner circumference of the first channel 11 Groundwater can flow.

And the outermost diameter of the head 22 is formed larger than the inner diameter of the stepped (12c) formed between the inlet portion (12a) and the outlet portion (12b) of the second passage 12 Accordingly, the second flow path 12 may be closed as the lowered head 22 is caught by the stepped step 12c.

The adjusting member 30 of the present invention is coupled to the upper body 10 so as to be elevating, and adjusts the elevating width of the elevating member 20 through pressurization by elevating.

At this time, the adjusting member 30, the body 10, the elastic body 31 for elastically supporting one end of the lifting member 20 protruding upward; A support 32 that is coupled to the upper portion of the body 10 to support the elastic body 31 properly; By including; a pressing rod 33 that is helically engaged with the support 32 to pressurize the elastic body 31; as the elastic force of the elastic body 31 is adjusted by elevating the pressing rod 33 in the support 32, the lifting member The elevating width of (20) is adjusted, whereby the return flow rate can be adjusted, and the constant flow rate can be returned.

In addition, the pressure bar 33 includes a handle 33a disposed at one end in the longitudinal direction, so that the pressure bar 33 in the support 32 may be easily lifted and lowered as the handle 33a is gripped and rotated.

When explaining in detail the groundwater supply and return through the constant flow rate control unit (A) for an open underground heat exchange device according to the present invention will be described in detail.

In the present invention, the first passage 11 of the body 10 communicates with the water inlet pipe 110 leading to the inner core 100, and as shown in FIG. 3, the first passage 11 in the body 10 communicates with the water inlet pipe 110. Groundwater in (100) flows along the first flow path (11).

At this time, the water inlet pipe 110 is provided with a pump 120 at one end located inside the deep well 100, and the groundwater in the deep well 100 flows into the water inlet pipe 110 by the operation of the pump 120 do.

In addition, a connection pipe 40 connected to the water supply pipe 300 leading to the external heat exchanger 200 is coupled to the outlet 11b of the first flow path 11, which flows along the first flow path 11 Since groundwater is supplied to the heat exchanger 200 through the connection pipe 40 and the water supply pipe 300, heat exchange is performed by the heat of the groundwater in the heat exchanger 200.

And in the present invention, the second flow path 12 of the body 10 communicates with the water return pipe 400 connected from the heat exchanger 200, that is, an external heat exchanger at the inlet 12a of the second flow path 12. The connection pipe 40 connected to the water return pipe 400 connected from the 200 is coupled, and the groundwater discharged after the heat exchange in the heat exchanger 200 passes through the water return pipe 400 and passes through the second flow path 12. Flow along.

At this time, the body 10 is provided with a discharge port 13 communicating with the outlet portion 12b of the second passage 12, and the groundwater flowing along the second passage 12 is discharged through the discharge port 13 Accordingly, since the water is returned to the inside of the deep well 100, the groundwater may be circulated.

And the elevating member 20 of the present invention is arranged to be elevating in the body 10, so that the water pressure rises as the water flow occurs in the first flow path 11, it is shown in FIGS. 4 and 5 As described above, since the head 22 is located above the discharge port 13, the discharge port 13 is opened, so that the flow rate of each water return pipe 400 connected to the entire pipe is even and water to the discharge port 13 As the inflow is smooth, the circulation of groundwater is smooth and the heat exchange cycle is achieved.

At this time, the present invention can adjust the return water flow rate. This will be described in detail as follows.

The adjusting member 30 of the present invention includes an elastic body 31 for elastically supporting one end of the elevating member 20 protruding above the body 10; A support 32 that is coupled to the upper portion of the body 10 to support the elastic body 31 properly; A pressure rod 33 that pressurizes the elastic body 31 by spirally biting the support 32; includes, as the pressure rod 33 is lifted and lowered on the support 32 by rotation of the handle 33a, the elastic body ( 31) is elongated or contracted to adjust the elastic force, thereby adjusting the elevating width of the elevating member 20 to adjust the amount of constant flow.

Therefore, the amount of water exchange can be reduced as the opening width of the discharge port 13 decreases due to the decrease in the rising width of the lifting member 20, and conversely, the opening width of the discharge port 13 is increased by increasing the rising width of the lifting member 20. As the amount of water exchanged can be increased, the amount of water exchanged can be adjusted, and more specifically, the amount of water exchanged can be made into a constant amount of water, so that the installation of a separate construction member, such as valves 330 and 430, for adjusting the amount of water exchanged is minimized. Since the structure can be simplified, it is possible to reduce the cost of materials, construction costs, and labor costs, as well as reduce the hassle of management.

In addition, according to the present invention, not only the flow rate of the water exchange can be adjusted, but overflow can be prevented by automatically blocking the water exchange when the pump 120 located in the deep well 100 fails. This will be described in detail as follows.

In the present invention, one end of the lifting member 20 is elastically supported by the elastic body 31 of the pressing member. As shown in FIG. 6, the water supply is stopped due to the pump 120 or the like, so that the lifting member 20, in particular When the water pressure applied to the bottom plate 21 is released, the elevating member 20 is lowered by the elongation of the elastic body 31 so that the head 22 of the elevating member 20 is moved to the inlet of the second flow path 12 ( Since it is caught in the stepped step 12c between the 12a) and the outlet 12b, the groundwater cannot be discharged through the discharge port 13 due to the opening of the second channel 12, so that the groundwater input into the deep hole 100 is stopped. Therefore, the water exchange can be automatically blocked by this.

At this time, the outermost diameter of the head 22 is formed larger than the inner diameter of the stepped portion 12c formed between the inlet portion 12a and the outlet portion 12b of the second passage 12, the lifting member 20 ) Since the head 22, which is lowered by the lowering, is stably caught on the stepped jaw 12c, the opening of the second passage 12 by the head 22 can be stably blocked.

Accordingly, overflow in the deep well 100 due to the change of water in the state of stopping the water supply can be prevented, so that the water level in the deep 100 can be easily managed.

In addition, as the water return is automatically shut off when the water supply is stopped, the installation of a separate member, such as the valves 330 and 430, can be minimized, so that the overall structure can be simplified, thereby increasing the efficiency of heat exchange for groundwater Of course, it is possible to reduce the cost of materials, construction costs, and labor costs, and reduce the hassle of management.

However, in the process of blocking the water exchange, it may be difficult to block the water exchange if the head 22 caught on the stepped step 12c is raised by the groundwater pressure in the second flow path 12.

However, in the present invention, the water pressure of the groundwater flowing along the water return pipe 400 is significantly lower than the water pressure of the groundwater flowing along the water supply pipe 300 and is less than the elastic force of the elastic body 31. 2 Since the groundwater pressure in the passage 12 is also less than the elastic force of the elastic body 31, the head 22 cannot be raised by the groundwater pressure in the second passage 12, so that the water exchange by the head 22 can be blocked smoothly. have.

On the other hand, an open underground heat exchange device (D) having a constant flow rate control unit (A) for an open underground heat exchange device according to the present invention includes a plurality of cores (100); A water supply pipe 300 for supplying groundwater supplied from each of the cores 100; A heat exchanger 200 in which heat exchange is performed by heat of groundwater supplied by the water supply pipe 300; And a return pipe 400 for returning the groundwater discharged from the heat exchanger 200 to the inner side of each of the deep wells 100.

Therefore, as shown in Fig. 2, as the constant flow rate control unit (A) for an open underground heat exchange device according to the present invention is inserted and installed in the case 500 disposed at the top of each of the cores 100, each of the cores 100 Water supply and exchange of water can be smooth.

At this time, the constant flow rate control unit (A) for an open underground heat exchange device according to the present invention is individually connected to the water supply pipe 300 and the water return pipe 400 by a connection pipe 40 as shown in FIG. 7.

In addition, the water supply pipe 300 and the water return pipe 400 include thermometers 310 and 410 to display the temperature of the groundwater flowing into the interior, and by including the pressure gauges 320 and 420, the Pressure can be displayed, and the flow of groundwater inside can be regulated by including the valves 330 and 430.

And the case 500 in which the constant flow rate control unit (A) is inserted and installed for an open underground heat exchange device according to the present invention includes: a circular tube 510 having a predetermined diameter; And a cover 520 that blocks the opening of the upper end of the tube body 510; as the cover 520 is opened, the body 10 may be drawn out from the inside of the tube body 510 to the outside.

At this time, the tubular body 510 is formed in multiple stages, so that the height of the case 500 may be adjusted by separating any one end.

In addition, the case 500 is a flow path through which groundwater flowing through the water inlet pipe 110 from the constant flow rate control unit A for an open underground heat exchange device according to the present invention flows, that is, a first flow path 11 A flow path through which groundwater flows through the outlet 11b and the return pipe 400 of the flow path, that is, a pipe connecting member 530 communicating with the inlet 12a of the second flow path 12, respectively; includes; By doing so, the coupling of the connection pipe 40 by the pipe connection member 530 may be facilitated.

The present invention as described above is not limited to the above-described embodiments, and thus can be changed within the scope not departing from the gist of the present invention claimed in the claims, and such changes are defined by the following claims. It is within the scope of the invention.

10: body 11: first flow path
11a: inlet 11b: outlet
12: second flow path 12a: inlet
12b: outlet 12c: stepped
13: discharge port 14: airtight member
20: lifting member 21: bottom plate
22: head 30: adjustment member
31: elastic body 32: support
33: pressure rod 33a: handle
40: connector 100: heart
110: water inlet pipe 120: pump
200: heat exchanger 300: water supply pipe
310: thermometer 320: pressure gauge
330: valve 400: return pipe
410: thermometer 420: pressure gauge
430: valve 500: case
510: tube body 520: cover
530: pipe connection member 600: water supply header
610: branch line 700: return header
710: branch line A: constant flow control unit
D: Open underground heat exchanger

Claims (7)

A first flow passage connected to a water inlet pipe leading to the inner side of the heart, and communicating with the water inlet pipe, and having an inlet and an outlet perpendicular to each other; A second flow passage in communication with a water return pipe leading from an external heat exchanger, wherein the inlet and the outlet are perpendicular to each other, and a stepped portion is formed between the inlet and the outlet; And a discharge port communicating with the outlet of the second passage; including groundwater flowing from the water inlet pipe through the first passage, and groundwater flowing from the water return pipe through the second passage And a body for discharging groundwater flowing from the water return pipe through the discharge port;
A bottom plate inserted into the body and inserted into the first passage; And a head inserted into the second flow path; including, groundwater introduced through the water inlet pipe comes into contact with the bottom plate and rises as the water pressure intensifies, and falls as the water pressure on the bottom plate is released, An elevating member for closing the second passage when the head is caught by the stepped jaws of the second passage by lowering; And
A constant flow rate control unit for an open underground heat exchange device, comprising: a control member that is coupled to the upper end of the body so as to be able to move up and down to adjust the lifting width of the lifting member through pressurization by lifting and lowering. delete The method of claim 1,
The adjusting member may include an elastic body elastically supporting one end of the elevating member protruding above the body; A support coupled to an upper portion of the body to properly erect and support the elastic body; And a pressure rod for pressing the elastic body by spirally biting the support. Including a constant flow rate control unit for an open underground heat exchange device according to claim 1 or 3,
Multiple hearts;
A water supply pipe for supplying groundwater supplied from each of the deep waters;
A heat exchanger in which heat exchange is performed by heat of the groundwater supplied by the water supply pipe; And
Includes; a water return pipe for returning the groundwater discharged from the heat exchanger to the inner side of each of the deep wells
A fluid flow control unit for the open underground heat exchange device is inserted and installed in a case disposed at the upper end of each of the deep wells,
The fluid flow control unit for the open underground heat exchange device is an open underground heat exchange device having a constant flow rate control unit for an open underground heat exchange device, characterized in that the fluid flow control unit is individually connected to the water supply pipe and the water return pipe by a connection pipe. The method of claim 4,
The water supply pipe and the water return pipe may include a thermometer that displays the temperature of the groundwater flowing into the interior; A pressure gauge that displays the pressure of the groundwater flowing into the interior; And a valve that regulates the flow of the groundwater therein. The method of claim 4,
The case, a circular tube of a constant diameter; And a cover for blocking the opening of the upper end of the tube. The method of claim 6,
The tube body is an open type underground heat exchanger having a constant flow rate control unit for an open type underground heat exchanger, characterized in that it is formed in multiple stages.

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