KR102346509B1 - Thermo-hygrostat including hot water geothermal heat pump - Google Patents

Abstract

The present invention relates to a thermo-hygrostat including a hot water geothermal heat pump. According to the present invention, the thermo-hygrostat comprises: a heat pump unit which has a pair of heat exchangers, a compressor, a four-way valve and an expansion valve; a buried pipe which is buried underground and stores groundwater; a hot water tank which stores hot water flowing into the heat pump unit and exchanges heat with the heat pump unit; a cold water tank which stores cold water flowing into the heat pump unit and exchanges heat with the heat pump unit; a hot water coil which is installed in a building and exchanges heat with the hot water tank; and a cold water coil which is installed in the building and exchanges heat with the cold water tank.

Description

{Thermo-hygrostat including hot water geothermal heat pump}

The present invention relates to a thermo-hygrostat including a high-temperature water geothermal heat pump and a method for controlling the same.

In general, as an energy source used for heating and cooling, fossil fuels such as coal, oil, natural gas, or the like, or electric power energy produced using these fossil fuels or nuclear power is mainly used. However, fossil fuels have the disadvantage of polluting water quality and the environment due to various pollutants generated in the combustion process.

Among these alternative energies, research on wind power, solar heat and geothermal energy, which have infinite energy sources, and heating and cooling devices using them are being used. These energy sources have the advantage of obtaining energy without affecting air pollution and climate change. On the other hand, there is a disadvantage that the energy density is very low.

As the depletion of fossil energy and environmental pollution problems have emerged, research and development on the use of clean energy, that is, natural energy such as solar heat, geothermal heat, and wind power, is being actively conducted. The use of thermo-hygrostats that do this is increasing.

A thermo-hygrostat using a heat pump that transfers a low-temperature heat source to a high temperature using the heat or condensation heat of a refrigerant or transfers a high-temperature heat source to a low temperature has the advantage of being able to perform both cooling, heating and dehumidification in one system. have.

In the case of a thermohygrostat using a conventional geothermal heat pump, groundwater is directly introduced into the pipe line provided inside the heat pump, and the water circulating the external cold and hot water coil is also directly introduced into the pipe line provided inside the heat pump, and then the two are heat exchanged. method has been used

In this case, since the amount of heat to be exchanged per unit time in the heat pump is large, the capacity of the heat pump must be increased unnecessarily, or excessive power is required to drive the compressor inside the heat pump.

In addition, when hot water of a high temperature is instantaneously introduced into the heat pump, an overload due to thermal shock occurs inside the heat pump, causing a serious problem that the entire system is stopped.

An object of the present invention is to provide a thermo-hygrostat that selectively opens and closes a valve to efficiently perform cooling, heating, and dehumidification.

Another object of the present invention is to reduce the amount of electric power required for heating and cooling by selectively using a cold water tank and a hot water tank.

The present invention provides a heat pump unit including a pair of heat exchangers, a compressor, a four-way valve and an expansion valve; a landfill pipe that is buried underground and stores groundwater; a hot water tank storing hot water flowing into the heat pump unit and exchanging heat with the heat pump unit; a cold water tank storing cold water flowing into the heat pump unit and exchanging heat with the heat pump unit; a hot water coil installed in a building and exchanging heat with the hot water tank; and a cold water coil installed in a building and exchanging heat with the cold water tank.

According to an aspect of the present invention, a first conduit and a second conduit forming a flow path circulating the buried pipe and the cold water tank; a fifth conduit branched from the first conduit and connected to the heat pump unit; a sixth conduit branched from the second conduit and connected to the heat pump unit; a second three-way valve provided at a branching point of the fifth pipe among the first pipe; and a fourth three-way valve provided at a branching point of the sixth pipeline among the second pipelines.

According to an aspect of the present invention, a third circulation pump provided in the sixth conduit and providing power to the water flowing into the heat pump unit; may further include.

According to an aspect of the present invention, a seventh conduit branched from the first conduit and connected to the heat pump unit;

an eighth conduit branched from the second conduit and connected to the heat pump unit; a first three-way valve provided at a branching point of the seventh conduit among the first conduits; and a third three-way valve provided at a branching point of the eighth conduit among the second conduits.

According to an aspect of the present invention, a ninth pipe branched from the seventh pipe and connected to the hot water tank; a tenth pipeline branched from the eighth pipeline and connected to the hot water tank; a fifth three-way valve provided at a branching point of the ninth pipeline among the seventh pipelines; and a sixth three-way valve provided at a branching point of the tenth pipeline among the eighth pipelines.

According to an aspect of the present invention, it is provided in the ninth pipe line, the fourth circulation pump for providing power to the water flowing into the hot water tank; may further include.

According to an aspect of the present invention, a third pipe and a fourth pipe forming a flow path circulating the cold water tank and the cold water coil; and a first circulation pump provided in the third conduit and providing power to the water flowing into the cold water tank.

According to an aspect of the present invention, the eleventh conduit and the twelfth conduit forming a flow path circulating the hot water tank and the hot water coil; and a second circulation pump provided in the twelfth pipe line and providing power to the water flowing into the cold water tank.

According to one aspect of the present invention, it is installed in a building, the blower for discharging the air that has passed through the cold water coil and the hot water coil into the room; further comprising, wherein the hot water coil may be installed between the cold water coil and the blower.

According to an aspect of the present invention, at least one of the hot water tank and the cold water tank may be a laminar flow tank.

According to an aspect of the present invention, it is provided between the hot water tank and the heat pump unit, the first flow rate control valve for controlling the flow rate of water flowing from the hot water tank to the heat pump unit; and a second flow rate control valve provided between the cold water tank and the heat pump unit to control a flow rate of water flowing from the cold water tank to the heat pump unit.

The present invention has the effect of providing a thermo-hygrostat that selectively opens and closes a valve to efficiently perform cooling, heating, and dehumidification.

The present invention has the effect of reducing the amount of power required for heating and cooling by selectively using a cold water tank and a hot water tank.

1 is a schematic diagram of a thermo-hygrostat including a high-temperature water geothermal heat pump according to the present invention.
2 illustrates a state in which the thermo-hygrostat including the high-temperature water geothermal heat pump is driven in the cooling mode.
3 illustrates a state in which the thermo-hygrostat including the high-temperature water geothermal heat pump is driven in a heating mode.
4 is a diagram illustrating a state in which the thermo-hygrostat including the high-temperature water geothermal heat pump is driven in a dehumidifying mode.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

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

First, an overall configuration of a thermo-hygrostat including a high-temperature water geothermal heat pump according to an embodiment of the present invention will be described with reference to FIG. 1 .

A thermohygrostat including a high-temperature water geothermal heat pump according to an embodiment of the present invention includes a heat pump unit 10 having a pair of heat exchangers, a compressor, a four-way valve and an expansion valve, and is buried underground and stores groundwater. A pipe 40, a hot water tank 20 that stores hot water circulating in the heat pump unit 10 and exchanges heat with the heat pump unit, and cold water circulating in the heat pump unit 10 is stored and the heat pump A cold water tank 30 that exchanges heat with the unit, a hot water coil 70 installed in a building and heat exchanged with the hot water tank 20, a cold water coil 60 installed in a building and heat exchanged with the cold water tank 30, and a building It is installed in the hot water coil 70 and the cold water coil 60 may include a blower 80 for sucking in the air introduced into the room and discharging it.

The hot water tank 20 is a laminar flow tank, and the temperature difference between the uppermost part and the lowermost part may be about 5-10 degrees Celsius, preferably about 7-8 degrees Celsius, and the upper part is maintained at a higher temperature than the lower part. can be

The laminar flow type hot water tank 20 temporarily accommodates the water flowing into the heat pump unit 10, while selectively adjusting the flow rate of water flowing into the heat pump unit 10 according to the temperature of the water or the required amount of heat. can

Similarly, the cold water tank 30 is a laminar flow tank, and the temperature difference between the uppermost part and the lowermost part may be about 5 to 10 degrees Celsius, preferably about 7 to 8 degrees Celsius, and the upper part has a higher temperature than the lower part. can be maintained as

The hot water coil 70 may be installed between the cold water coil 60 and the air blower 80, and after dehumidification is performed through the cold water coil 60 during dehumidification mode operation, the hot water coil ( 70), the air can be heated and discharged back into the indoor space.

Hereinafter, the configurations related to the conduits and valves and the circulation pump for guiding the water circulating in the above-described components and controlling the flow will be described.

First, in the thermo-hygrostat including the high-temperature water geothermal heat pump according to an embodiment of the present invention, a first pipe line (L1) and a second pipe line (L1) and second It may further include a pipe line (L2) and a third pipe line (L3) and a fourth pipe line (L4) forming a flow path circulating the cold water tank (30) and the cold water coil (60).

In addition, the thermo-hygrostat including a high-temperature water geothermal heat pump according to an embodiment of the present invention is branched from the first pipe line L1 and connected to the heat pump unit 10 by a fifth pipe line L5, the second A sixth pipeline (L6) branched from the pipeline (L2) and connected to the heat pump unit 10, a seventh pipeline (L7) branched from the first pipeline (L1) and connected to the heat pump unit (10) and an eighth conduit L8 branched from the second conduit L2 and connected to the heat pump unit 10 .

In addition, the thermo-hygrostat including the high-temperature water geothermal heat pump according to an embodiment of the present invention is branched from the seventh pipe line (L7) and connected to the hot water tank 20 through the ninth pipe line (L9) and the eighth pipe line. A tenth pipeline (L10) branched from (L8) and connected to the hot water tank 20, and an eleventh pipeline (L11) forming a channel for circulating the hot water tank 20 and the hot water coil 70; A twelfth conduit L12 may be further included.

Through the above-described pipe configuration, water passes through the buried pipe 40 , the heat pump unit 10 , the hot water tank 20 , the cold water tank 30 , the hot water coil 70 and the cold water coil 60 . A circulating flow path may be formed.

A thermo-hygrostat including a high-temperature water geothermal heat pump according to an embodiment of the present invention, configured to provide power to water flowing through the pipeline, is provided in the third pipeline (L3) and the cold water tank (30) ), a first circulation pump (P1) for providing power to the water flowing through, a second circulation pump (P2) provided in the twelfth conduit (L12) and providing power to the water flowing into the hot water tank (20), the A third circulation pump (P3) provided in the sixth conduit (L6) and providing power to the water flowing into the heat pump unit (100), and a third circulation pump (P3) provided in the ninth conduit (L9) to the hot water tank (20) It may further include a fourth circulation pump (P4) for providing power to flowing water.

Next, as a configuration for controlling the flow direction of water by selectively opening and closing the pipeline, the thermo-hygrostat including a high-temperature water geothermal heat pump according to an embodiment of the present invention is the seventh pipeline among the first pipelines L1. A first three-way valve (V1) provided at a branching point of (L7), a second three-way valve (V2) provided at a branching point of the fifth pipe line (L5) among the first pipe lines (L1), the first A third three-way valve (V3) provided at a branching point of the eighth pipe line (L8) among the two pipe lines (L2), a point at which the sixth pipe line (L6) of the second pipe line (L2) branches off A fourth three-way valve (V4), a fifth three-way valve (V5) provided at a branching point of the ninth pipeline (L9) of the seventh pipeline (L7), and the tenth of the eighth pipeline (L8) It may further include a sixth three-way valve (V6) provided at a branching point of the pipeline (L10).

In addition, the thermo-hygrostat including the high-temperature water geothermal heat pump according to an embodiment of the present invention is provided in the eighth pipe line (L8) to control the flow rate of water flowing from the hot water tank (20) to the heat pump unit (10). A first flow rate control valve 61 to selectively control, and a second flow rate provided in the sixth pipe line L6 to selectively control the flow rate of water flowing from the cold water tank 30 to the heat pump unit 10 It may further include a control valve (62).

The amount of heat flowing into the heat pump unit 10 may be controlled through the flow control valve, so that a large amount of water is instantaneously introduced into the heat pump unit 10, causing an overload in the compressor or sudden power consumption. The rising problem can be effectively prevented.

Through the above-described configurations, the thermo-hygrostat according to an embodiment of the present invention can perform cooling, heating, and dehumidification while reducing energy loss.

Hereinafter, with reference to FIGS. 2 to 4, the operating aspects and effects thereof of the above components will be described in more detail.

First, a path through which water flows during cooling and related detailed configurations will be described with reference to FIG. 2 .

In the cooling mode, the first conduit (L1) and the seventh conduit (L7), and the second conduit (L2) and the eighth conduit (L8) allow water to pass through the buried pipe 40 and the heat pump unit 10. A circulating flow path may be formed.

In this case, the fifth three-way valve (V5) blocks the movement of water to the ninth conduit (L9), and the sixth three-way valve (V6) blocks water movement to the tenth conduit (L10), It is possible to prevent water from circulating to the hot water tank 20 .

In addition, the second three-way valve V2 controls so that water flows from the heat pump unit 10 to the cold water tank 30 through a portion of the fifth pipe line L5 and the first pipe line L1. and the fourth three-way valve V4 controls so that water flows from the cold water tank 30 to the heat pump unit 10 through a part of the second pipe line L2 and the sixth pipe line L6. can be

Then, the cold water introduced into the cold water coil 60 through the fourth pipe line (L4) obtains heat from the internal air, and then re-introduced into the cold water tank 30 through the third pipe line (L3). heat can be expelled.

Thereafter, the discharged heat may be discharged to the buried pipe through the heat pump unit 10 , and in the process, when the temperature of water to be cooled by flowing into the heat pump unit 10 is too high, the second flow rate The flow rate introduced through the control valve 62 may be reduced to lower the load applied to the heat pump unit 10 .

Next, Figure 3 With reference, a path through which water flows in the heating mode and related detailed configurations will be described.

In the heating mode, the first conduit (L1) and the fifth conduit (L5), and the second conduit (L2) and the sixth conduit (L6) are filled with water through the buried pipe (40) and the heat pump unit (10). A circulating flow path may be formed.

In this case, the second three-way valve (V2) and the fourth three-way valve (V4) block the water movement to the cold water tank (30), and the first three-way valve (V1) is connected to the first pipe line (L1) to block the movement of water from the to the seventh conduit L7, and the third three-way valve V3 may block the movement of water from the second conduit L2 to the eighth conduit L8.

In addition, the fifth three-way valve V5 controls so that water flows from the heat pump unit 10 to the hot water tank 20 only through a part of the seventh pipe line L7 and the ninth pipe line L9. and the sixth three-way valve V6 controls so that water flows from the hot water tank 20 to the heat pump unit 10 only through a part of the tenth pipeline L10 and the eighth pipeline L8. can be

Then, the hot water flowing into the hot water coil 70 through the 11th pipe line (L11) is re-introduced into the hot water tank 20 through the 12th pipe line (L12) after discharging heat to the internal air. You can get your calories back.

Thereafter, the amount of heat can be obtained again from the buried pipe through the heat pump unit 10 , and in the process, when the temperature of water to be heated by flowing into the heat pump unit 10 is too low, the first flow rate is adjusted The flow rate flowing in through the valve 61 may be reduced to lower the load applied to the heat pump unit 10 .

Next, a path through which water flows in the dehumidification mode and related detailed configurations will be described with reference to FIG. 4 .

In the dehumidification mode, water (cold water) flows from the fourth pipe line L4 to the cold water coil 60 to remove moisture in the process of taking heat from the air, and then through the third pipe line L3. It may flow into the cold water tank 30 and lose heat to be cooled.

Thereafter, water is transferred from the cold water tank 30 to the heat pump unit 10 through a part of the second conduit L2 and the sixth conduit L6 by opening and closing the fourth three-way valve V4. flows through the heat pump unit 10, and through a portion of the fifth conduit L5 and the first conduit L1 by opening and closing of the second three-way valve V2, the heat pump unit 10 may flow into the cold water tank 30 .

Next, the water heated by the heat pump unit is

The hot water flows from the heat pump unit 10 to the hot water tank 20 through a part of the seventh conduit L7 and the ninth conduit L9 by opening and closing the fifth three-way valve V5. Through the tank 20, the heat pump unit ( 10) can flow.

Thereafter, the water heated in the hot water tank 20 moves to the hot water coil 70 through the eleventh conduit L11 to heat the dehumidified air, and again through the twelfth conduit L12. It can be guided to the tank 20 .

The hot water coil 70 may be installed between the cold water coil 60 and the air blower 80, and after dehumidification is performed through the cold water coil 60 during dehumidification mode operation, the hot water coil ( 70), the air is heated and discharged back to the indoor space, so that the temperature of the indoor air can be kept constant.

According to the above-described configuration, the present invention selectively operates the cooling, heating and dehumidifying modes as one system as needed, but in the cooling mode, water flows without passing through the hot water tank, and in the heating mode, water without passing through the cold water tank Because of this flow, it has an excellent effect of increasing the thermal efficiency by reducing the number of heat exchanges.

Even if the effect is not described in this specification, the present invention may additionally have different effects of each of the above-described components, and derive a new effect that cannot be seen in the prior art according to the organic coupling relationship between each of the above-described components can do.

In addition, the embodiments shown in the drawings may be modified and implemented in other forms, and when implemented including the configuration claimed in the claims of the present invention or implemented within the scope of equivalents, it should be considered to belong to the scope of the present invention. something to do.

Heat pump unit 10 Hot water tank 20
Cold water tank 30 Landfill pipe 40
Hot water coil 60 Cold water coil 70
Blower 80 No. 1 Pipe L1
Pipeline 2 L2 Pipeline 3 L3
Pipeline 4 L4 Pipeline 5 L5
Pipeline 6 L6 Pipeline 7 L7
Pipeline 8 L8 Pipeline 9 L9
Pipeline 10 L10 Pipeline 11 L11
1st 3-way valve V1 2nd 3-way valve V2
3rd three way valve V3 4th three way valve V4
The 5th three-way valve V5 The 6th three-way valve V6
1st circulation pump P1 2nd circulation pump P2
3rd circulation pump P3 4th circulation pump P4
1st flow control valve 61 2nd flow control valve 62

Claims (11)

a heat pump unit having a pair of heat exchangers, a compressor, a four-way valve and an expansion valve;
a landfill pipe that is buried underground and stores groundwater;
a hot water tank storing hot water flowing into the heat pump unit and exchanging heat with the heat pump unit;
a cold water tank storing cold water flowing into the heat pump unit and exchanging heat with the heat pump unit;
a hot water coil installed in a building and exchanging heat with the hot water tank;
a cold water coil installed in a building and exchanging heat with the cold water tank;
a first conduit and a second conduit forming a flow path circulating the buried pipe and the cold water tank;
a third conduit and a fourth conduit forming a flow path circulating the cold water tank and the cold water coil;
a fifth conduit branched from the first conduit and connected to the cold water tank side of the heat pump unit;
a sixth conduit branched from the second conduit and connected to the cold water tank side of the heat pump unit;
a seventh conduit branched from the first conduit and connected to the hot water tank side of the heat pump unit;
an eighth conduit branched from the second conduit and connected to the hot water tank side of the heat pump unit;
a ninth pipe branched from the seventh pipe and connected to the hot water tank;
a tenth pipeline branched from the eighth pipeline and connected to the hot water tank;
a second three-way valve provided at a branching point of the fifth pipe among the first pipe;
a fourth three-way valve provided at a branching point of the sixth pipeline among the second pipelines;
a fifth three-way valve provided at a branching point of the ninth pipeline among the seventh pipelines; and
a sixth three-way valve provided at a branching point of the tenth pipeline among the eighth pipelines;
It is possible to control the humidity without changing the temperature of the indoor air, including
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. delete The method of claim 1,
A third circulation pump provided in the sixth conduit and providing power to the water flowing into the heat pump unit; further comprising
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
a first three-way valve provided at a branching point of the seventh conduit among the first conduits; and
A third three-way valve provided at a branching point of the eighth pipeline among the second pipelines; further comprising
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. delete The method of claim 1,
A fourth circulation pump provided in the ninth conduit and providing power to the water flowing into the hot water tank; further comprising
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
A first circulation pump provided in the third conduit and providing power to the water flowing into the cold water tank; further comprising
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
11th and 12th pipes forming a flow path circulating the hot water tank and the hot water coil; and
A second circulation pump provided in the twelfth conduit and providing power to the water flowing into the cold water tank; further comprising
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
A blower installed in a building and discharging air that has passed through the cold water coil and the hot water coil into the room; further comprising,
The hot water coil is installed between the cold water coil and the blower.
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
At least one of the hot water tank and the cold water tank is a laminar flow tank
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that. The method of claim 1,
a first flow rate control valve provided between the hot water tank and the heat pump unit to control a flow rate of water flowing from the hot water tank to the heat pump unit; and
a second flow rate control valve provided between the cold water tank and the heat pump unit to control a flow rate of water flowing from the cold water tank to the heat pump unit;
Thermo-hygrostat comprising a high-temperature water geothermal heat pump, characterized in that.

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