KR20100134496A - Heating and cooling system and using a heat pump - Google Patents

Abstract

PURPOSE: A cooling and heating device using a heat pump is provided to heat a house in the night by storing underground heat and inner heat of the house and using the stored heat. CONSTITUTION: A cooling and heating device(10) using a heat pump comprises multiple heat exchangers(11), a heat storage tank(14), a heat pump(30), and a first auxiliary heat supply unit(50). The heat exchangers are installed inside a house and emit and absorb heat. The heat storage tank is connected to a first supply pipe(12) and a first return pipe(13). The heat pump has a first heat exchanger(32), a second heat exchanger(34), a circulation pipe(35), and a four-way valve(38). The first and second heat exchangers are installed in first and second heat exchanging chambers(31,33). The first auxiliary heat supply unit is connected to the second heat exchanging chamber.

Description

Heating and cooling system {heating and cooling system and using a heat pump}

The present invention relates to a cold and heating device using an underground heat source, and more particularly, to a cold and heating device capable of heating by using heat storage after absorbing heat from the underground heat or the inside of the house during the day.

In general, in agricultural production facilities such as greenhouses and greenhouses, energy emitted by the sun during the day is directly used by photosynthesis, and is stored in the ground or other heat-retaining materials for heating.

On the other hand, in order to use the heat or ground heat accumulated as described above is to use a groundwater relatively easy to recover heat. However, when groundwater is used as a heat exchange medium, the amount of heat generated by heating of a facility house or building for growing crops is relatively insufficient.

On the other hand, Korean Patent Laid-Open Publication No. 2000-63299 discloses a geothermal heat exchanger for circulating geothermal heat contained in the ground and groundwater or open water, and geothermal heat drawn up by the geothermal heat exchanger. The cooling and heating cycle which is made to make, and the apparatus which talks with the said heating cycle and heat the indoor hot water are disclosed.

And Korea Patent Publication No. 10-0628466 discloses a heating and cooling device using the underground air layer. The air-conditioning and heating system is formed by drilling and embedding the volcanic ash terrain to extend to the underground space, and a suction pipe for sucking underground air from the porous rock layer, and a blower having an air blower inside to blow and blow underground air through the suction pipe. And an induction pipe for guiding underground air blown from a blower inherent to the blower into a facility, and a technical configuration incorporating a heater in the blower.

However, since such a heating apparatus uses a heater as an auxiliary heat source, there is a problem in that a relatively high cost is required, and it is difficult to apply to a large-capacity heating and cooling apparatus such as a facility house.

The present invention is to solve the problems as described above, as a secondary heat source for heating the heat exchange medium, the geothermal heat during the day and the heat inside the facility house is recovered by the heat pump and stored in the heat storage tank, using the same Therefore, the purpose is to provide a cold, heating device using a heat pump that can heat the interior of the facility house at a relatively low temperature at night.

Cooling and heating apparatus using a heat pump of the present invention for achieving the above object is a plurality of heat exchangers are installed in the interior of the facility house to release and absorb heat,

A heat storage tank connected to a first supply pipe and a first return pipe for supplying a heat exchange medium to the heat exchangers;

A first heat exchanger installed in the first heat exchange chamber, a second heat exchanger installed in the second heat exchange chamber, a circulation pipe connecting the first and second heat exchangers to form a closed circuit, and an expansion installed in the circulation pipe A heat pump having a valve, a compressor, and a four-way valve installed in the circulation pipe to circulate in the forward and reverse directions through the expansion valve toward the first heat exchanger or the second heat exchanger;

A first auxiliary heat source supply means connected to the first heat exchange chamber and configured to circulate an auxiliary heat exchange medium underground to allow heat exchange with the first heat exchanger;

A second supply pipe and a second return pipe for connecting the second heat exchange chamber and the heat storage tank to circulate the heat exchange medium in the heat storage tank;

First and second branch pipes branched from the first supply pipe and the first return pipe, respectively, and connected to the first heat exchange chamber, and connecting pipes of the first and second branch pipes, the first supply pipe, and the first return pipe. It is characterized in that it is provided with valve units for selectively connecting the heat storage tank and the first and second branch engines.

The cold and heating device using the heat pump of the present invention absorbs the heated heat inside the facility house during the underground heat and daytime, stores it in the heat storage tank and heats the inside of the facility house at night using this heat. The heating efficiency can be maximized, and furthermore, the heating cost can be reduced.

Cooling, heating device using a heat pump using an underground heat source according to the present invention is capable of heating and heating a facility house or building, an embodiment thereof is shown in FIG.

Referring to the drawings, the cold heating device 10 using the heat pump is installed in the interior of the facility house 200 a plurality of heat exchangers 11 for dissipating and absorbing heat, and the heat exchangers (11) The heat storage tank 14 is connected to the first supply pipe 12 and the first return pipe 13 for supplying the heat exchange medium 100 to the. The first supply pipe 12 and the first return pipe 13 has a first circulation pump 21 for circulating the heat exchange medium 100 in the heat storage tank 14 to a fan coil unit which is the heat exchanger 11. Is installed. The heat exchanger 11 is not limited to the fan coil unit, and may be any structure as long as it is installed inside the house to exchange heat between the heat exchange medium and the air.

The heat exchange medium stored in the heat storage tank 14 is heated by the heat pump 30. The heat pump 30 includes a first heat exchanger 32 installed in the first heat exchange chamber 31, a second heat exchanger 34 installed in the second heat exchange chamber 33, and the first, A circulation pipe 35 that connects two heat exchangers 32 and 34 to form a closed circuit, an expansion valve 36 and a compressor 37 installed in the circulation pipe 35, and the circulation pipe 35. It is provided on the first heat exchanger 32 or the second heat exchanger (34) side is provided with a four-way valve 38 to circulate in the forward and reverse direction through the expansion valve to achieve one cycle. In addition, the heat storage tank 14 is thermally connected with the first heat exchange chamber 31, and the second heat exchange chamber 33 circulates a heat exchange medium in order to absorb heat therein, thereby allowing heat exchange with the second heat exchanger. And a first auxiliary heat source supply means (50). The second supply pipe 15 and the second return pipe 16 for circulating the heat exchange medium in the heat storage tank by connecting the first heat exchange chamber 31 and the heat storage tank 14, and the first supply pipe ( 12 and first and second branch pipes 17 and 18 branched from the first return pipe 13 and connected to the second heat exchange chamber 33, respectively. A second circulation pump 15a is installed in the second supply pipe 15.

The first and second branch pipes 17 and 18 and the first supply pipe 12 and the first return pipe 13 are installed at the connection part of the heat storage tank 14 and the first and second branch pipes 17. First and second valve units 25 and 26 to selectively connect the " 18 " Herein, the valve unit preferably uses a three-way valve.

The first auxiliary heat source supply means 50 extends from the ground to the ground to exchange the heat exchange unit 51, the heat exchange unit 51, and the second heat exchange chamber 33 for heat exchange between the geothermal heat and the heat exchange medium 100. And a third supply pipe 52 and a third return pipe 53 for connecting. The third supply pipe 52 is provided with a third circulation pump 54 for pumping a heat exchange medium.

Figure 2 shows another embodiment of the cooling, heating apparatus using the underground heat source according to the present invention. In the above embodiment, the same reference numerals refer to the same components.

Referring to the drawings, the underground air-conditioning apparatus using the heat pump is provided with a third branch pipe (71) connecting the first return pipe 13 and the third supply pipe 52, the connecting portion of the third, Three-way valves, which are four-valve units 72 and 73, are provided. In addition, the first supply pipe 12 further includes groundwater supply means 60 for supplying groundwater to the fan coil unit as shown in FIG. 2. The ground water supply means 60 is a ground water supply pipe 61 for pumping ground water is connected to the first supply pipe 12, the connection portion selectively heat exchange medium 100 and ground water in the heat storage tank 14 A fifth valve unit 74, which is a three-way valve for supplying the first supply pipe 12, is provided. And the third return pipe 53 is further provided with a ground water discharge pipe 62 for selectively discarding the ground water. Here, the groundwater discharge pipe 62 may allow the groundwater to return to the basement.

3 shows another embodiment of a cooling and heating device using a heat pump according to the present invention. The same reference numerals as in the above embodiments refer to the same components.

Referring to the drawings, a heating and cooling device 10 using a heat pump is installed in the facility house 200 and a plurality of heat exchangers 11 for dissipating and absorbing heat, and the heat exchangers 11 A heat storage tank 14 connected to the first supply pipe 12 and the first return pipe 13 for supplying the heat exchange medium 100 is provided.

The first supply pipe 12 is provided with a first circulation pump 21 for circulating the heat exchange medium in the heat storage tank 14 to the fan coil unit which is the heat exchanger 11.

The heat pump 30 and the second heat exchange chamber 33 for heating the heat exchange medium stored in the heat storage tank 14 and the second heat exchange chamber 33 circulate the heat exchange medium so as to absorb the heat of the underground. A first auxiliary heat source supply means 50 and the auxiliary cooling means 80 to enable heat exchange is provided.

The first auxiliary heat source supply means 50 extends from the ground to the ground to connect the heat exchange unit 51 and the heat exchange unit 51 and the second heat exchange chamber 33 for heat exchange between the geothermal heat and the heat exchange medium 100. And a third supply pipe 52 and a third return pipe 53. The third supply pipe 52 is provided with a third circulation pump 54 for pumping a heat exchange medium.

The auxiliary cooling means 80 is connected to the auxiliary heat storage tank 81, the first supply pipe 12, and the fourth branch pipe 82 connected to the auxiliary heat storage tank 81, and the first supply pipe 12. The fifth component is installed at the connecting portion of the fourth branch pipe 82 and connects the sixth valve unit 83 to selectively control the supply of water, and the first return pipe 13 and the auxiliary heat storage tank 81. It is provided with the engine 88 and the 7th valve unit 89 which is installed in the connection part of the said 1st return pipe 13 and the 5th branch engine 88, and supplies water selectively. In addition, the auxiliary heat exchanger 84 is installed in the auxiliary heat storage tank 81 and the auxiliary circulation pipe 85 forming a closed circuit connecting the third return pipe 53 or the second heat exchange chamber 33. The coupling portions of the auxiliary circulation pipe 85 and the third return pipe 53 are provided with eighth and ninth valve units 86 and 87, respectively. In the above embodiment, the valve unit may be a three-way valve, but is not limited thereto.

Referring to the operation of the cooling, heating apparatus using a heat pump according to the present invention configured as described above are as follows.

First, in the spring, autumn or early summer, where the temperature inside the house is high during the day and heating is required for plant growth at night, as shown in FIG. 1, the heat is absorbed and stored in the heat storage tank during the day. In the heat storage tank, the facility house is heated using heated heat exchange medium and geothermal heat.

This will be described in more detail. During the day when the temperature of the facility house 200 is relatively high, the second heat exchange chamber 33 and the first supply pipe 12 in which the heat pump, that is, the second heat exchanger 34 which is an evaporator, are installed. The heat exchange medium cooled through the first branch pipe 17 is supplied to the heat exchanger side, and the heat exchange medium absorbing heat in the chamber chamber 200 is transferred through the first return pipe 13 to the second heat exchange chamber 33. ) To be recovered. That is, the second heat exchange chamber 33, the first branch pipe 17, the first valve unit 25, the first supply pipe 12, the heat exchanger 11, the first return pipe 13, and the second valve unit 26 are made. The two-return tube 18 circulates the heat exchange medium to the second heat exchange chamber 33. In this way, the second heat exchanger 34, which is an evaporator installed in the second heat exchange chamber 33, absorbs heat, and the first heat exchanger 32, which is a condenser, absorbs heat and heat corresponding to the amount of the compressor. Heat radiation to the heat exchange medium in the first heat exchange chamber (31). Since the first heat exchange chamber 31 is connected by the heat storage tank 14, the second supply pipe 15, and the second return pipe 16, the heat exchange medium in the heat storage tank 14 is heated.

In the case of a relatively low temperature at night, the first and second valve units 25 and 26 are operated so that the heat storage tank 14 and the first supply pipe 12 and the return pipe 13 communicate with each other. In addition, the third supply pipe 52 and the third return pipe 53 of the first auxiliary heat source supply means 50 are connected to the second heat exchange chamber 33. In this state, when the heat pump 30 and the circulation pump are driven, the heat exchange medium in the second heat exchange chamber 33 is a heat exchange unit 51 for heat exchange with geothermal heat, the heat exchange unit 51 and the second heat exchange chamber. It is circulated through the third supply pipe 52 and the third return pipe 53 connecting the 33. Accordingly, the ground heat is recovered through the evaporator, which is the second heat exchanger 34, and the heat corresponding to the amount of the heat and the compressor is discharged from the first heat exchanger 32, which is the condenser.

Therefore, the heat exchange medium in the heat storage tank 14 connected by the second supply pipe 15 and the second return pipe 16 is heated, and the heat exchange medium in the heated heat storage tank 14 is heat-exchanged in the facility house 200. Heating is performed by circulating through the machine 11, the first supply pipe 12, and the return pipe 13. This action is the same for the heating of the winter facility house 200.

In summer, the second heat exchanger 34 inside the second heat exchange chamber 33 is changed by changing a circulation path of the refrigerant of the heat pump 30 to cool the inside of the facility house 200 as shown in FIG. 2. ) Is used as the condenser, and the first heat exchanger 32 in the first heat exchange chamber 31 is used as the evaporator.

Then, the ground water is supplied to the first supply pipe, and the ground water returned through the first return pipe 13 is supplied to the third supply pipe 52 and cooled through the heat exchange unit 51. Therefore, the heat exchange medium of the heat storage tank 14 circulating through the first heat exchange chamber 31 is cooled, and the facility house 200 is cooled by using the cooled heat exchange medium. At this time, the groundwater passing through the third return pipe 53 is discarded or returned to the basement.

Meanwhile, as shown in FIG. 3, the cooling and heating apparatus using the heat pump is connected to the first supply pipe 12 through the auxiliary heat storage tank 81 and the fourth branch pipe 82 to recover heat in the facility house during the day. By supplying a cooled heat exchange medium, the heat in the facility house is recovered through the first heat exchanger and returned to the auxiliary heat storage tank 81 through the fifth branch pipe 88. In this process, the heat exchange medium in the auxiliary heat storage tank 81 is connected to the second heat exchange chamber 33 and the first auxiliary heat source supply means 50 in the auxiliary heat exchanger 84 installed in the auxiliary heat storage tank 81. The heat exchange medium is circulated to cool the heat exchange medium inside the auxiliary heat storage tank.

At night, the heat exchange medium heated in the heat storage tank 14 is circulated through the first supply pipe 12, the heat exchanger 11, and the first return pipe 13 to heat the inside of the facility house.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a circuit diagram showing a heating apparatus using a heat pump according to the present invention,

2 and 3 is a circuit diagram showing other embodiments of a heating and cooling device using a heat pump according to the present invention,

Claims (2)

A plurality of heat exchangers installed inside the facility house for dissipating and absorbing heat, a heat storage tank connected to a first supply pipe and a first return pipe for supplying a heat exchange medium to the heat exchangers; A first heat exchanger installed in the first heat exchange chamber, a second heat exchanger installed in the second heat exchange chamber, a circulation pipe connecting the first and second heat exchangers to form a closed circuit, an expansion valve installed in the circulation pipe, and A heat pump having a compressor and a four-way valve installed in the circulation pipe to circulate in the forward and reverse directions through the expansion valve toward the first heat exchanger or the second heat exchanger; A first auxiliary heat source supply means connected with the second heat exchange chamber and circulating a heat exchange medium underground to allow heat exchange with the second heat exchanger; The second supply pipe and the second return pipe connecting the first heat exchange chamber and the heat storage tank to circulate the heat exchange medium in the heat storage tank; First and second branch pipes branched from the first supply pipe and the first return pipe, respectively, and connected to the first heat exchange chamber, and installed at a connection portion between the first and second branch pipes, the first supply pipe, and the first return pipe. Cooling and heating using a heat pump, characterized in that provided with valve units for selectively connecting the heat storage tank and the first and second branches. A plurality of heat exchangers installed inside the facility house for dissipating and absorbing heat, A heat storage tank connected to a first supply pipe and a first return pipe for supplying a heat exchange medium to the heat exchangers; A first heat exchanger installed in the first heat exchange chamber, a second heat exchanger installed in the second heat exchange chamber, a circulation pipe connecting the first and second heat exchangers to form a closed circuit, an expansion valve installed in the circulation pipe, and A heat pump having a compressor and a four-way valve installed in the circulation pipe to circulate in the forward and reverse directions through the expansion valve toward the first heat exchanger or the second heat exchanger; The second heat exchange chamber further comprises a first auxiliary heat source supply means and an auxiliary cooling means for circulating a heat exchange medium to absorb heat in the underground to exchange heat with the second heat exchanger. Heating and cooling device using.

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