KR20090077730A - Cooling/heating system by using heat pump - Google Patents

Abstract

A cooling/heating system using a heat pump is provided to minimize heat loss in cooling and heating by using natural convection within the heat storage tank so as to stabilize the flow of fluid. A cooling/heating system, in which a compressor, a first heat exchanger, an expansion valve and a second heat exchanger constitute one cycle, includes a heat pump(10), a heat storage tank(20), and a radiation unit(30). The heat pump comprises an all-direction valve which converts the refrigerant discharged from the compressor to one of the first and second heat exchangers. The heat storage tank is located apart from the heater pump and connected to a first circulation line(21) to store or circulate cold or hot water obtained through water heat exchange method in the first heat exchanger. The radiation unit is provided in a heating-cooling part(40) located apart from the heat storage tank and connected to a second circulation line(31) to emit the cold or hot air through the circulation of cold or hot water in the heat storage tank.

Description

Heating and Cooling System using Heat Pump {Cooling / Heating system by using heat pump}

The present invention relates to a cooling and heating device using a heat pump, and more particularly, using a water heat exchange type heat pump to store cold and hot water in a heat storage tank and circulating the cold and hot water in the heat storage tank to a facility that is a heating and cooling unit for cooling or When heating, it is stored in the upper part of the heat storage tank when heating and is sucked from the upper part, and stored in the lower part of the heat storage tank when cooling, and it is sucked and circulated from the lower part in order to stabilize the fluid flow in the heat storage tank as well as heat loss. The present invention relates to a cooling and heating device using a heat pump that can minimize and efficiently cool and heat.

In general, a house or a house for crop cultivation is equipped with a heat pump which is capable of cooling in the summer and heating in the winter. The heat pump comprises a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger in one cycle as in a normal cooling cycle, but the refrigerant discharged from the compressor in a flow path between the compressor and the first and second heat exchangers. A four-way valve for switching to either one of the first and second heat exchangers is added.

The heat pump may be installed and used in a plentiful manner, but a heat storage tank may be added to a position spaced apart from the heater pump at a predetermined distance, and a radiation unit may be installed and installed in a facility that is a heating and cooling unit spaced apart from the heat storage tank. Can be. At this time, the first heat exchanger and the heat storage tank of the heat pump is connected to the heat storage tank and the first circulation line for storing or circulating the cold water or hot water obtained by the water heat exchange method in the first heat exchanger in the heat storage tank and the heat storage tank and the radiating unit The second circulation line is connected to circulate the cold water or hot water in the heat storage tank to radiate cold or warm air from the radiating unit of the heat exchange method.

The conventional air conditioning and heating device operates the heat pump, but when the heating mode is selected, the refrigerant is compressed in the compressor to be a high-temperature, high-pressure gas refrigerant, and the compressed refrigerant is pumped through the four-way valve to the first heat exchanger while being passed. Heat exchange (heat dissipation) through water heat exchange in one heat exchanger, condensing into liquid refrigerant of high temperature and high pressure. At this time, the first heat exchanger functions as a condenser.

The liquid refrigerant of the condensed high temperature and high pressure is transformed into a low pressure state in the expansion valve and is evaporated in the second heat exchanger, thereby absorbing the vaporization heat of the refrigerant required for vaporization from the outside, thereby cooling the surroundings of the second heat exchanger. At this time, the second heat exchanger functions as an evaporator.

The low temperature and low pressure gas refrigerant passing through the second heat exchanger is suction compressed by a compressor and repeatedly circulates the above-mentioned process, so that continuous heat exchange is performed in the first and second heat exchangers.

As mentioned above, during the operation of the heat pump, the high heat of the refrigerant continuously pumped from the compressor of the heat pump is conducted through the water heat exchange method in the first heat exchanger.

In this state, as the pump installed in the first circulation line is operated, water in the heat storage tank is sucked and discharged so that the water is circulated from the heat storage tank to the heat storage tank again along the first circulation line. As a result, the high temperature and high pressure gas refrigerant passing through the first heat exchanger is condensed into the liquid phase, and the water flowing along the first circulation line becomes hot water while passing through the first heat exchanger and is continuously supplied to the inside of the heat storage tank. It becomes

At the same time, when the second pump installed in the second circulation line is operated, the hot water in the heat storage tank is sucked and discharged so that it flows along the second circulation line including the radiating unit, thereby returning from the heat storage tank to the heat storage tank again through the second circulation line. The process of continually being made is circulated. At this time, since the heat radiates from the radiating unit in the facility, which is a heating and cooling unit, heating is achieved.

On the contrary, if the cooling mode is selected, the refrigerant is compressed in the compressor to become a high-temperature, high-pressure gas refrigerant, and the compressed refrigerant is transferred to the second heat exchanger through the four-way valve, and is heated by the heat exchange method in the second heat exchanger. Exchange (heat dissipation) condenses into liquid refrigerant at high temperature and high pressure. At this time, the second heat exchanger functions as a condenser.

The liquid refrigerant of the high temperature and high pressure condensed in this way is transformed into a low pressure state in the expansion valve, and as it is evaporated in the first heat exchanger, the vaporization heat of the refrigerant required for vaporization is absorbed from the outside, thereby cooling the inside of the first heat exchanger. At this time, the first heat exchanger functions as an evaporator.

The low temperature and low pressure gas refrigerant passing through the first heat exchanger is suction compressed by a compressor and repeatedly circulates the above-described process, so that continuous heat exchange is performed in the first and second heat exchangers.

As mentioned above, while the heat pump is in operation, the refrigerant having a low pressure is evaporated in the first heat exchanger by the expansion valve, so that the vaporization heat necessary for evaporation is absorbed through the water heat exchange method in the first heat exchanger.

In this state, as the pump installed in the first circulation line operates and sucks and discharges water in the heat storage tank, the process of returning from the heat storage tank to the heat storage tank again along the first circulation line is continuously circulated. As a result, the low pressure liquid refrigerant passing through the first heat exchanger is vaporized, and the water flowing along the first circulation line becomes cold water while passing through the first heat exchanger and is continuously circulated and supplied into the heat storage tank, so that the water in the heat storage tank becomes cold water.

At the same time, when the second pump installed in the second circulation line is operated, the cold water in the heat storage tank is sucked in and discharged, so that it flows along the second circulation line including the spinning unit, thereby returning from the heat storage tank to the heat storage tank again through the second circulation line. The process continues and circulates. At this time, cooling is achieved because the radiating unit radiates cold air from the radiation unit within the facility.

Existing cooling and heating device using the heat pump as described above, when operating in the cooling mode or heating mode, when the first pump on the first circulation line is driven in any position of the heat storage tank in the first heat exchanger of the heat pump After discharging the cold and hot water obtained by heat exchange to the arbitrary position of the heat storage tank, and when the second pump on the second circulation line is operated, it is sucked in the arbitrary position of the heat storage tank and radiated from the radiating unit to perform the cooling and heating. To discharge.

Therefore, in the existing air conditioner using a heat pump, despite the high temperature of the hot water and the low temperature of the upper part of the hot and cold water in the heat storage tank, the suction is simply sucked in the arbitrary position of the heat storage tank and discharged to an arbitrary position without distinguishing the cooling mode or the heating mode. The bar can not be sucked to the optimum conditions required for cooling and heating, and this has the problem that the cooling and heating efficiency is bound to fall.

The present invention has been researched and developed in order to solve the above-mentioned closed end and problems, and stores the cold and hot water obtained by using the first heat exchanger of the heat pump in the heat storage tank and circulates the cold and hot water in the heat storage tank to the facility which is a heating and cooling part. When cooling or heating, the hot water is stored in the upper part of the heat storage tank when heating, and the hot water is sucked in from the upper part and supplied to the facility as a cooling and heating unit. When cooling, the cold water is stored in the lower part of the heat storage tank and the cold water is sucked in from the lower part. It is possible to stabilize the flow of fluid by using natural convection in the heat storage tank by supplying it to facilities, thereby providing a heating and cooling device using a heat pump to minimize heat loss of cooling and heating and to provide efficient cooling and heating.

Another object of the present invention is to provide the auxiliary heat source, which is various boilers in the first circulation line connected to the first heat exchanger and the heat storage tank of the heat pump to run the time limit can replace the deterioration of the efficiency of the time limit heat pump and thereby insufficient heating It is to provide a heating and cooling device using a heat pump that can afford a smooth heating and heating efficiency at all times to handle the load.

It is still another object of the present invention to induce and discharge the warmth of a facility that is warmer than outside air in winter when the outside temperature is low in the second heat exchanger of the heat pump through the exhaust guide to the second heat exchanger of the heat pump or through underground air. By suctioning with a blower fan and inducing discharge, the temperature of the second heat exchanger of the heat pump is prevented from falling low, thereby providing a heating and cooling device using a heat pump that can prevent the performance degradation and mechanical damage of the heat pump even when the outside air temperature is low. It is.

In order to achieve the above object, the present invention comprises a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger configured in one cycle so that the refrigerant is compressed, cooled, and then vaporized into a liquid. And a heat pump including a four-way valve for converting the refrigerant discharged from the compressor between the compressor and the first and second heat exchangers to either one of the first and second heat exchangers. A heat storage tank provided at a position spaced apart from the heater pump and connected to store or circulate the cold water or hot water obtained by the heat exchange method in the first heat exchanger by the first pump; A radiation unit provided in a facility that is a cooling / heating unit spaced apart from the heat storage tank and connected to a second circulation line to circulate cold water or hot water in the heat storage tank by a second pump to radiate cold or warm air; In the cooling and heating device using a heat pump consisting of, the first and the second circulation line is stored in the upper part of the heat storage tank when heating, and sucked from the upper side and supplied to the radiating unit of the facility and stored in the lower part of the heat storage tank when cooling. Ends of the first and second circulation lines, which are connected to the heat storage tank and connected to the upper and lower part base lines, are respectively connected to the upper and lower parts of the heat storage tank so as to be sucked from and supplied to the radiation unit of the facility, and a valve for opening and closing the flow path in the upper and lower part base lines. Characterized in that provided.

In addition, the valve provided in the upper and lower part base line of the first and second circulation line may be an on / off valve that simply opens and closes the flow path, but is adopted as a three-way valve which is switched manually or automatically according to a cooling and heating mode. It can be provided at the branch of.

In order to achieve a more convective phenomenon in the heat storage tank, an end of the lower branch line connected to the bottom of the heat storage tank is provided to face the bottom, and an end of the lower branch line connected to the top of the heat storage tank is preferably provided to face the ceiling.

Various auxiliary heat sources such as an oil boiler, a solar boiler, an electric boiler, a firewood boiler, and the like may be added to the first circulation line to replace the deterioration of the efficiency of the heat pump during an extreme time and to handle insufficient heating load.

The radiating unit is preferably provided with a drain pipe for draining the water generated during condensation during cooling, and at the lower end of the drain pipe to prevent the clogging of the drain pipe and a drain box having a damper function.

In the air-conditioning and heating device using a heat pump according to the present invention, an exhaust port having an exhaust fan is provided on an upper portion of a facility that is an air-conditioning unit, and the exhaust fan is closed at the stop and opened at the time of operation so as to block outside air from entering the facility. It is preferable to provide a type (louver type).

The exhaust guide of the facility is characterized in that the exhaust guide is extended to supply the bet exhausted from the inside of the facility to the second heat exchanger of the heat pump when the exhaust fan is operated.

In the air-conditioning and heating apparatus using a heat pump according to the present invention, the heat pump is supplied with underground air in order to prevent the performance degradation and mechanical damage of the heat pump generated when the temperature of the second heat exchanger falls below 5 ° C in winter. Buried underground air supply pipe underground so as to be connected to the top of the underground air supply pipe is characterized in that the blower pipe including a blowing fan is provided.

At the upper end of the underground air supply pipe, a gravity type separator for separating and removing water in the underground air by dropping the flow rate of the underground air being sucked is provided.

The present invention stores the hot and cold water obtained by using the first heat exchanger of the heat pump in the heat storage tank and circulates the cold and hot water in the heat storage tank to the facility of the heating and cooling unit to store the hot water at the top of the heat storage tank when cooling or heating. In addition, by sucking hot water from the upper part and supplying it to the facility, which is the heating and cooling unit, and storing the cold water in the lower part of the heat storage tank during cooling, and sucking the cold water from the lower part and supplying it to the facility, which is the heating and cooling unit, by using natural convection in the storage tank. Stabilization can be achieved, which has a useful effect of minimizing heat loss of air conditioning and heating and efficient air conditioning.

In addition, by providing auxiliary heat sources, which are various boilers, in the first circulation line to which the first heat exchanger and the heat storage tank of the heat pump are connected, it is possible to replace the deterioration of the efficiency of the extreme heat pump by limiting the heat load. Smooth heating and cooling efficiency can be achieved.

In the second heat exchanger of the heat pump, when the exhaust fan of the exhaust port is operated in the winter, when the outside temperature is lower than the outside temperature, the exhaust fan guides and discharges the underground air to the second heat exchanger of the heat pump through the exhaust guide. By suctioning and inducing discharge, the temperature of the second heat exchanger of the heat pump is prevented from being lowered. Thus, even when the outside air temperature is low, the performance of the heat pump and the mechanical damage are prevented.

Hereinafter, a cooling and heating device using a heat pump of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, the heating and cooling device using the heat pump of the present invention includes a heat pump 10 for obtaining cold and hot water, a heat storage tank 20 for storing the cold and hot water obtained by the heat pump 10, and the heat storage tank 20. Cold and hot water stored in is divided into a radiating unit 30 for radiating cold or warm air from the facility 40 which is the heating and cooling unit.

The heat pump 10 includes a compressor 13, a first heat exchanger 11, an expansion valve 14, and a second heat exchanger 12 such that the refrigerant is compressed, cooled, and becomes a liquid and then vaporized. ) Constitutes one cycle, and the refrigerant discharged from the compressor 13 between the compressor 13 and the first and second heat exchangers 11 and 12 is the first and second heat exchangers 11 and 12. It is comprised including the four-way valve 15 for switching to either.

The heat storage tank 20 is provided at a position spaced apart from the heater pump 10 at a predetermined distance, it is sufficient that can store the cold water or hot water obtained by the water heat exchange method in the first heat exchanger (11). The outer surface of the heat storage tank 20 is preferably provided with a heat insulating material so that the insulation and heat insulation. The heat storage tank 20 and the first heat exchanger 11 store the cold / hot water obtained from the first heat exchanger 11 as the heat storage tank 20 by the first pump 22 or store the cold / hot water in the heat storage tank 20 in a first manner. The first circulation line 21 is connected to circulate through the heat exchanger 11.

The radiating unit 30 is provided in the facility 40, which is a cooling and heating unit at a position spaced apart from the heat storage tank 20, and circulates cold or hot water in the heat storage tank 20 by the second pump 32. It is connected to the second circulation line 31 to radiate. The radiating unit 30 is a normal fan coil unit is used to radiate cold or warm air to the fan when the cold and hot water of the heat storage tank 20 passes through the radiating unit (30).

In addition, the radiating unit 30 is provided with a drain pipe 33 for draining the water generated by condensation during cooling, and the drain pipe having a plurality of openings in the bottom of the drain pipe 33 is empty ( 34).

In addition, an exhaust port 41 having an exhaust fan 42 is provided at an upper portion of the facility 40, which is a heating and cooling unit, and the exhaust fan 42 is closed at the stop and opened at the time of operation so as to block outside air from entering the facility. It is preferable to provide a louver type.

The first and second circulation lines 21 and 31 are stored at the upper part of the heat storage tank 20 when heated and sucked from the upper part to be supplied to the radiation unit 30 of the facility, and are stored at the bottom of the heat storage tank 20 when cooling. In addition, the end portions of the first and second circulation lines 21 and 31, which are connected to the heat storage tank 20, to be sucked from the lower part and supplied to the radiation unit 30 of the facility 40, the upper and lower part line lines 21a, 21b, and 31a. Branches (31b) are connected to the upper and lower portions of the heat storage tank 20, respectively, and the valves 25 and 35 are provided in the upper and lower portion lines 21a, 21b, 31a, and 31b to open and close the flow path only on one side.

The upper and lower part base lines 21a, 21b, 31a, and 31b of the first and second circulation lines 21 and 31 connected to the upper and lower parts of the heat storage tank 20 are provided to achieve a more convective phenomenon in the heat storage tank 20. This is preferred. For example, end portions of the lower branch lines 21b and 31b connected to the lower portion of the heat storage tank 20 are provided so as to face the bottom in the middle of the heat storage tank 20 and are connected to the upper portion of the heat storage tank 20. The end portion of 31a is provided so as to face the ceiling in the middle of the heat storage tank 20.

In addition, the valves 25 and 35 are upper and lower side open / close valves for simply opening and closing a flow path to upper and lower part line lines 21a, 21b, 31a, and 31b which are end portions of the first and second circulation lines 21 and 31. 25a, 25b, 35a, 35b) (25c, 25d, 35c, 35d), which is preferably provided to be switched manually or automatically according to the heating and cooling mode.

Although the valves 25 and 35 are illustrated and described only as being provided in both branched lines, the branch of the upper and lower part base lines 21a, 21b, 31a, and 31b of the first and second circulation lines 21 and 31, respectively. Each part may be provided with three-way valves.

It will be described in detail with respect to the cooling and heating mode of the heating and cooling device using a heat pump according to the present invention configured as described above.

When the heating mode is selected when the outside air temperature is low, such as in winter, the compressor 13 of the heat pump 10 is operated. As the compressor 13 is operated, the refrigerant is sucked from the second heat exchanger 12 to obtain a high temperature and high pressure. The refrigerant is compressed into a gas refrigerant, and thus the compressed refrigerant is pumped to the first heat exchanger 11 through the four-way valve 15 and heat exchanged through the water heat exchange method while passing through the first heat exchanger 11. Condensed into a liquid refrigerant at high temperature and high pressure. At this time, the first heat exchanger 11 performs the function of a condenser.

The liquid refrigerant of the condensed high temperature and high pressure is transformed into a low pressure state in the expansion valve 14 and is evaporated in the second heat exchanger 12 so as to absorb the vaporization heat of the refrigerant required for vaporization from the outside of the second heat exchanger 12. Cool around. At this time, the second heat exchanger 12 performs a function as an evaporator.

The low-temperature, low-pressure gas refrigerant passing through the second heat exchanger 12 is compressed by suction by the compressor 13 to circulate the above-mentioned process repeatedly, so that the first and second heat exchangers 11 and 12 ) Is a continuous heat exchange.

As mentioned above, while the heat pump 10 is operating, the high heat of the refrigerant continuously pumped from the compressor 13 of the heat pump 10 is conducted in the first heat exchanger 11 through water heat exchange. do.

When the heating mode is selected as described above, the on / off valves 25a and 25d on the first circulation line 21 are closed and the on / off valves 25b and 25c are open and the on / off valves on the second circulation line 31 are opened. 35a, 35d should be closed and on / off valves 35b, 35c should be open.

In this state, as the first pump 22 is operated on the first circulation line 21, the water in the lower portion of the heat storage tank 20 is sucked from the lower branch line 21b of the first circulation line 21. The water is passed through the first heat exchanger 11 and is discharged to the heat storage tank 20 through the upper branch line 21a of the first circulation line 21. In other words, a process of sucking the lower water in the heat storage tank 20 and discharging it to the upper side of the heat storage tank 20 through the first heat exchanger 11 is continuously performed.

At this time, the gas refrigerant having a high temperature and high pressure in the first heat exchanger 11 and water flowing along the first circulation line 21 having a lower temperature than the gas refrigerant exchange heat. Therefore, the high-temperature, high-pressure gas refrigerant passing through the first heat exchanger 11 is condensed into the liquid phase, and the water flowing along the first circulation line 21 becomes hot water while passing through the first heat exchanger 11. Since the circulation is continuously supplied to the inside, the water in the heat storage tank 20 becomes hot water.

Since the hot water heated by the first heat exchanger 11 is heated to the upper portion of the heat storage tank 20, the temperature is relatively higher than the lower part, and this is because natural convection occurs. Water does not flow.

At the same time, when the second pump 32 installed in the second circulation line 31 is operated, the hot water in the upper part of the heat storage tank 20 is sucked through the upper branch line 31a of the second circulation line 31 to radiate the unit 30. ) And is returned to the lower portion of the heat storage tank 20 through the second circulation line 32 and its lower branch line 32b in the spinning unit 30. As the process of returning to the heat storage tank 20 again through the second circulation line 31 in the heat storage tank 20 continues to be circulated, the heat is radiated from the radiation unit 30 in the facility 40 which is a heating and cooling unit. This is done.

The cold water cooled by heat dissipation is supplied to the lower portion of the heat storage tank 20 so that the temperature is relatively lower than the upper part. This is because natural convection occurs, so that the water of the upper and lower heat storage tank 20 does not flow.

As described above, the hot water of the upper part having a relatively high temperature is supplied to the upper branch lines 21a and 31a of the first and second circulation lines 21 and 31 during the heating and the natural convection phenomenon. As intended, the fluid flow can be stabilized, thereby minimizing heat loss of the heating and efficient heating.

In the daytime when the facility 40 grows crops during the day when the sun shines, the damage to crops may occur because the temperature is high, so if the temperature in the house is higher than the set value, it is installed at the exhaust port 41 above the facility 40. Exhaust fan 42 is operated, thereby discharging the hot air in the facility 40, the internal temperature of the facility 40 is lowered to the set point temperature. When the temperature is lowered to the set value, the exhaust fan 42 in the exhaust port 41 is stopped. At this time, the exhaust fan 42 is a louver type, which blocks the flow in the facility 40, thereby reducing heat loss.

On the contrary, when the cooling mode is selected, the refrigerant flow path of the refrigerant in the heat pump 10 is switched by the four-way valve 15 to be reversed in the heating mode. Therefore, the refrigerant is sucked from the first heat exchanger 11 and compressed in the compressor 13, and thus the refrigerant is compressed in the compressor 13, thereby becoming a high-temperature, high-pressure gas refrigerant, and the compressed refrigerant is provided through the four-way valve 15. The heat exchange (heat dissipation) through the heat exchange method in the second heat exchanger 12 is condensed into a liquid refrigerant at a high temperature and high pressure while being passed to the second heat exchanger 12. At this time, the second heat exchanger 12 performs the function of a condenser.

The liquid refrigerant of the condensed high temperature and high pressure is transformed into a low pressure state in the expansion valve 14 and evaporated in the first heat exchanger 11 so as to absorb the vaporization heat of the refrigerant required for vaporization from the outside, so that the inside of the first heat exchanger 11 Is cooled. At this time, the first heat exchanger 11 performs a function as an evaporator.

The low-temperature low-pressure gas refrigerant passing through the first heat exchanger 11 is compressed by suction by the compressor 13 to circulate the above-mentioned process repeatedly, thereby providing the first and second heat exchangers 11 and 12. ) Is a continuous heat exchange.

While the heat pump 10 is operating, the refrigerant, which has become low pressure by the expansion valve 14, is evaporated in the first heat exchanger 11, and vaporization heat necessary for evaporation is transferred through the water heat exchange method in the first heat exchanger 11. Will be absorbed.

When the cooling mode is selected as described above, the on / off valves 25b and 25c on the first circulation line 21 are closed and the on / off valves 25a and 25d are open and the on / off valves on the second circulation line 31 35b and 35c should be closed and on / off valves 35a and 35d should be open.

In this state, as the first pump 22 on the first circulation line 21 operates, the water in the upper portion of the heat storage tank 20 is sucked through the upper branch line 21a of the first circulation line 21. The sucked water passes through the first heat exchanger 11 and is discharged to the heat storage tank 20 through the lower branch line 21b of the first circulation line 21. In other words, the process of sucking the upper water in the heat storage tank 20 and discharging it to the lower side of the heat storage tank 20 through the first heat exchanger 11 is continuously performed.

At this time, the low-pressure gas refrigerant in the first heat exchanger 11 and the water flowing along the first circulation line 21 having a higher temperature than the gas refrigerant exchange heat. Therefore, the low pressure liquid refrigerant passing through the first heat exchanger 11 is vaporized, and the water flowing along the first circulation line 21 becomes cold water while passing through the first heat exchanger 11 into the heat storage tank 20. Since the water is circulated continuously, the water in the heat storage tank 20 becomes cold water.

At the same time, when the second pump 32 on the second circulation line 31 is operated, cold water in the heat storage tank 20 is sucked through the lower branch line 31b of the second circulation line 32 to the radiation unit 30. It is supplied and returned to the upper portion of the heat storage tank 20 through the second circulation line 31 and its upper branch line (31a) in the spinning unit (30).

Since the warm water warmed by releasing cold air is supplied to the upper portion of the heat storage tank 20, the temperature is relatively higher than the lower part, which is the same as the natural convection phenomenon, so that water above and below the heat storage tank 20 does not flow.

As described above, the cooling water is supplied to the lower branch lines 21b and 31b of the first and second circulation lines 21 and 31 at a lower temperature in the heat storage tank 20 and thus sucked. As intended, stabilization of the fluid flow can be achieved, thereby minimizing heat loss of the cooling and efficient cooling.

As described above, the process of returning from the heat storage tank 20 to the heat storage tank 20 again through the second circulation line 31 in the cooling mode is continuously circulated, thereby circulating. Cooling is achieved by releasing cold air from). At this time, since the hot air of the second circulation line 31 and the facility 40 is in contact with the spinning unit 30, water is generated in the spinning unit 30 due to condensation.

Water generated in this way is drained into the ground through the drain pipe 33 and the drain pipe 34 is provided at the lower end of the drain pipe 33 to prevent clogging of the drain pipe 33 by foreign matter or soil, condensation phenomenon As well as securing a sufficient space for the large amount of water generated by the flow flows into the ground through a number of through holes are drained.

4 is a view showing another embodiment of a heating and cooling device using a heat pump according to the present invention. Here, in the first circulation line 21, various auxiliary heat sources 26 such as oil boilers, solar boilers, electric boilers, firewood boilers, and the like, to replace insufficient efficiency of the heat pump 10 during an extreme time, and to handle insufficient heating loads. Except for this addition is the same as in one embodiment of the present invention.

According to the configuration of another embodiment as described above, it is known that the performance of the heat pump 10 is reduced when the temperature of the outside air is 5 ° C. or lower. In this case, the auxiliary heat source 26 is operated to operate the heat pump 10. It replaces the decrease in efficiency and will bear the insufficient heating load of the heat pump (10), thereby allowing sufficient heating of the facility 40 even in extreme times.

5 is a view showing another embodiment of a heating and cooling device using a heat pump according to the present invention. In this case, when the exhaust fan 42 is operated in the exhaust port 41 of the facility 40, the exhaust guide is configured to supply the bet exhausted from the interior of the facility 40 to the second heat exchanger 12 of the heat pump 10. 44) is extended, and underground air is supplied to the heat pump 10 to supply underground air to prevent the performance degradation and mechanical damage of the heat pump 10 generated when the outside temperature drops below 5 ° C. It is the same as the configuration of the embodiment of the present invention except that the pipe 50 is buried and connected to the upper end of the underground air supply pipe 50 to provide a blower pipe 52 including a blower fan 53.

At the upper end of the underground air supply pipe 50, a gravity type separator 54 is provided for separating and removing water in the underground air by reducing the flow rate of the underground air being sucked.

According to another embodiment of the configuration as described above, the second heat exchanger 12 of the heat pump 10 should function as an evaporator in the winter season when the outside air temperature is lower than 5 ℃, but if the outside air temperature is low second It is known that the temperature difference between the temperature of the heat exchanger 12 and the outside air is small so that the performance degradation and mechanical damage of the heat pump 10 are likely to occur.

At this time, when the blower fan 53 on the blower pipe 52 is operated, underground air (about 15-16 ° C.) warmer than outside air in winter is sucked through the underground air supply pipe 50 to be heated through the blower pipe 52. It is discharged to the second heat exchanger 12 of the pump 10. As a result, by preventing the temperature drop around the second heat exchanger 12, it is possible to prevent the degradation of the performance of the heat pump 10 and the mechanical damage.

When the underground air is sucked by the blower fan 53 of the blower pipe 52 as described above, the moisture in the underground air is separated by the gravity type separator 54 and then discharged to the second heat exchanger 12. The adverse effect of the two heat exchangers 12 can be excluded.

In addition, when the temperature in the facility 40 is higher than the set point temperature, the exhaust fan 42 of the exhaust port 41 is activated, and the air in the facility 40 is heated by the exhaust guide 44 by the exhaust fan 42. Since it is discharged to the second heat exchanger 12 of the pump 10, the preheating effect of the second heat exchanger 12 may be obtained.

The present invention can be usefully used in a cooling and heating device including a heat storage tank, that is, a heating and cooling device having a first heat exchanger of a water heat exchange system among the cooling and heating devices of a large house for growing crops.

1 is a view showing a heating and cooling device using a heat pump according to an embodiment of the present invention,

Figure 2 is a schematic view showing an extract of the heat pump in Figure 1,

Figure 3a is a view showing for explaining the flow of hot water in the heating mode in the heating and cooling device of Figure 1,

Figure 3b is a view showing a cold water flow in the cooling mode in the cooling and heating device of Figure 1,

4 is a view showing a heating and cooling device using a heat pump according to another embodiment of the present invention;

5 is a view showing a heating and cooling device using a heat pump of another embodiment according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: heat pump 11: the first heat exchanger

12: second heat exchanger 13: compressor

14: expansion valve 15: four-way valve

20: heat storage tank 21: the first circulation line

21a, 31a: upper branch line 21b, 31b: lower branch line

22: first pump 25, 35: valve

30: spinning unit 31: the second circulation line

32: second pump 33: drain pipe

34: Drain 40: Facility

41: exhaust port 42: exhaust fan

44: exhaust guide 50: underground air supply pipe

52: blower pipe 53: blower fan

Claims (8)

The compressor, the first heat exchanger, the expansion valve, and the second heat exchanger are configured in one cycle so that the refrigerant is compressed, cooled, and then vaporized into a liquid, and the compressor and the first and second heat exchangers are configured in one cycle. A heat pump including a four-way valve for converting the refrigerant discharged from the compressor into one of the first and second heat exchangers; A heat storage tank provided at a position spaced apart from the heater pump at a predetermined distance and connected to a first circulation line to store or circulate cold water or hot water obtained by the water heat exchange method in the first heat exchanger; A radiation unit provided in a facility that is a cooling / heating unit spaced apart from the heat storage tank and connected to a second circulation line to circulate cold water or hot water in the heat storage tank to radiate cold or warm air; In the cooling and heating device using a heat pump, The first and second circulation lines are stored in the upper part of the heat storage tank when heated and sucked from the upper part to be supplied to the radiation unit of the facility, and when stored in the lower part of the heat storage tank, the first and second circulation lines can be sucked from the lower part and supplied to the radiation unit of the facility by suction. And end portions of the first and second circulation lines, which are connected to each other, are connected to upper and lower portions of the heat storage tank, respectively, and are connected to upper and lower portions of the heat storage tank, and a valve for opening and closing the flow path is provided in the upper and lower portion gas lines. The method of claim 1, In order to achieve more reliable convection in the heat storage tank, the lower branch line end connected to the bottom of the heat storage tank is provided to face the bottom, and the upper branch line end connected to the top of the heat storage tank is arranged to face the ceiling. Device. The method of claim 1, The valve is provided in the branch portion of the upper and lower part line and the heating and cooling device using a heat pump, characterized in that provided with a three-way valve is switched manually or automatically in accordance with the heating and cooling mode. The method of claim 1, The first circulation line is equipped with various auxiliary heat sources such as an oil boiler, a solar boiler, an electric boiler, and a firewood boiler to replace insufficient efficiency of the heat pump while reducing the efficiency of the heat pump during extreme heat. Device. The method of claim 4, wherein The radiating unit is provided with a drain pipe for draining the water generated during condensation during cooling, and a drain pipe having a hollow and a plurality of through holes is provided at the bottom of the drain pipe to prevent clogging of the drain pipe. Heating and cooling device using a heat pump. The method of claim 1, An exhaust port having an exhaust fan is provided at an upper portion of the facility, and when the exhaust fan is operated, the exhaust guide is extended to supply the bet exhausted from the inside of the facility to the second heat exchanger of the heat pump. Air conditioning unit. The method of claim 1, In the heat pump, underground air supply pipes are buried underground to supply underground air in order to prevent performance degradation and mechanical damage of the heat pump generated when the temperature of the second heat exchanger falls below 5 ° C in winter. Cooling and heating device using a heat pump, characterized in that the blower pipe is connected to the top of the pipe including a blowing fan. The method of claim 7, wherein Cooling and heating device using a heat pump on the top of the underground air supply pipe is provided with a gravity type separator for separating and removing the water in the underground air by dropping the flow rate of the underground air sucked.

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