KR100721420B1 - Heat pump system with means for heating and method for controlling thereof - Google Patents

Abstract

The present invention relates to a heat pump system having a heating means and a control method thereof, so that the evaporation of the refrigerant can be reliably performed in the heating means separately provided even at low ambient temperature environmental conditions, thereby improving the performance of the heat pump system. More specifically, in the present invention, when the temperature of the outside air is relatively low temperature, the air is heat-exchanged with the refrigerant while the evaporation of the refrigerant is performed in the outdoor unit by a conventional air heat source method, and the temperature of the outside air In the case of the cryogenic temperature, by absorbing heat from the brine refrigerant heated in the auxiliary heat exchanger installed separately, the refrigerant can evaporate, thereby overcoming the performance problem of the existing heat pump system caused by the decrease in the ambient temperature. At the same time, the present invention is provided with a heat storage means that can store the thermal energy of the existing system, there is an effect that can reduce the energy cost by using a midnight electricity.

Heat Pump, Brine, Air Conditioning, Four Way Valve, Heat Exchanger, Refrigerant

Description

Heat pump system with heating means and its control method {Heat Pump System with Means for Heating and Method for Controlling}

1 is a schematic view showing a heat pump system according to the present invention,

Figure 2 is a schematic diagram illustrating the operation during the cold storage operation of the heat pump system according to the present invention,

Figure 3 is a schematic diagram illustrating the operation during the cooling operation of the heat pump system according to the present invention,

4 to 6 is a schematic diagram illustrating the operation during the heat storage operation of the heat pump system according to the present invention.

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

10: Compressor 11: Inverter

13: refrigerant line 15: outdoor unit

17: valve 20: indoor unit

21: expansion valve 23: auxiliary line

25: four-way valve 27: auxiliary heat exchanger

30: storage 33: heater

40: first brine refrigerant line 41: heat exchanger

43, 73a, 73b, 91a, 91b: Three-way valve

45: blower 47,80: pump

50: second brine refrigerant line 60: third brine refrigerant line

65: brine pump 70: brine heat exchanger

75,85: 1st sequence line, 2nd sequence line

77,87: 1st storage tank, 2nd storage tank

83a, 83b: intermittent valve 90: brine refrigerant circulation line

100: heat pump system

The present invention relates to a heat pump system having a heating means and a control method thereof, so that the evaporation of the refrigerant can be reliably performed in the heating means separately provided even at low ambient temperature environmental conditions, thereby improving the performance of the heat pump system. More specifically, in the present invention, when the temperature of the outside air is relatively low temperature, the air is heat-exchanged with the refrigerant while the evaporation of the refrigerant is performed in the outdoor unit by a conventional air heat source method, and the temperature of the outside air In the case of the cryogenic temperature, by absorbing heat from the brine refrigerant heated in the auxiliary heat exchanger installed separately, the refrigerant can evaporate, thereby overcoming the performance problem of the existing heat pump system caused by the decrease in the ambient temperature. At the same time, the present invention is provided with a heat storage means that can store the thermal energy of the existing system, there is an effect that can reduce the energy cost by using a midnight electricity.

In order to increase the effectiveness of the already established ice storage cooling system, the technological change to a system that can operate it as a heating system, that is, a heat pump, is very natural, and the technology development and application of such a system are very diverse. . In other words, many companies in Korea have developed systems applied to cooling, heating and hot water supply of condominiums and bathrooms using wastewater, river water, groundwater, etc. as heat sources of heat pumps. Is being formed. In particular, in the case of geothermal heat-cooled air conditioners, it is expected to be greatly applied in the future after being certified by KEPCO. However, in the case of a system using renewable energy such as wastewater, groundwater, and geothermal heat, there is a limit in demand such as requiring a far-reaching site or a relatively large site from a heat source. On the other hand, it is easy to apply to small and medium-sized buildings of 200 ~ 300 pyeong or less requiring heating, and if it is miniaturized, an air heat source heat pump that is easy to apply to a single house is applied. There is no case of a certified supplier. The reason is that in the case of heat pumps using renewable energy such as groundwater, geothermal and wastewater, the temperature of the heat source is almost constant throughout the year, so that the overall energy use efficiency of the entire heating and cooling system is not difficult to exceed the standard value, while the air heat source is not difficult. This is because it is difficult to reach the threshold.

In addition, the problem of performance and capacity reduction caused by the decrease of the outside air temperature, which is the biggest disadvantage of the air heat source heat pump, is a problem that needs to be solved and becomes the biggest obstacle to the use of the system. Therefore, in order to secure a market as an air-conditioning system suitable for small and medium-sized buildings or houses in the traditional heating and cooling system of Korea, it is necessary to secure performance that exceeds KEPCO's accreditation standards. This requires the development of technology to improve the performance of the core heat pump, as well as the development of methods and technologies that make the most of the benefits of using midnight electricity.

The present invention has been made to solve the above problems, an object of the present invention is to improve the performance of the heat pump system by the reliable evaporation of the refrigerant to the heating means provided separately even in the environmental conditions of low ambient temperature. The present invention provides a heat pump system and a control method thereof.

In addition, another object of the present invention is to provide a heat pump system and a method of controlling the same, having a heat storage means capable of storing thermal energy of an existing system, which can reduce energy costs by using midnight electricity.

The present invention for solving the above problems in the air-conditioning system including a compressor, outdoor unit, indoor unit, expansion valve, and four-way valve, connecting the components between the expansion valve and the outdoor unit of the refrigerant line to move the refrigerant inside An auxiliary line connecting one point and another point of the compressor to the outdoor unit; An auxiliary heat exchanger installed on the auxiliary line and connected in parallel with the outdoor unit; Valves installed on the refrigerant movement path between the expansion valve of the refrigerant line and the outdoor unit and on the refrigerant movement path between the expansion valve and the auxiliary heat exchanger of the auxiliary line, respectively; Heating means for selectively exchanging the heated brine refrigerant from the reservoir having a heating means for forcibly heating the internally stored brine refrigerant in the outdoor unit and the auxiliary heat exchanger through a plurality of brine refrigerant lines; Characterized in that configured to include.

In addition, the present invention is a method for controlling the heat pump as described above, wherein the heat pump is driven divided into the first, second, and third modes according to the temperature set in order from high temperature to low temperature based on the temperature of the outside air during heating. In the first mode, the brine refrigerant does not move on both the first brine refrigerant line and the second brine refrigerant line, and the refrigerant is moved in the order of the compressor, the indoor unit, the expansion valve, and the outdoor unit, and the compressor in the second mode. , And the refrigerant is moved in the order of the indoor unit, the expansion valve, and the outdoor unit. The brine refrigerant is moved on the first brine refrigerant line by driving and controlling a pump and a three-way valve, and at the same time, operating a blower from the heat exchanger. Heat of the brine refrigerant is discharged to be transmitted to the outdoor unit, and in the third mode, the second valve is driven and controlled by a pump and a three-way valve. While the brine refrigerant is moved on the in-coolant line, the valves are closed and opened, and the refrigerant moved in the order of the compressor, the indoor unit, and the expansion valve is moved to the subsidiary heat exchanger without passing through the outdoor unit to be evaporated in the subsidiary heat exchanger. It is characterized by.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a heat pump system according to the present invention, Figure 2 is a schematic diagram illustrating the operation during the cold storage operation of the heat pump system according to the present invention, Figure 3 is a cold pump operation of the heat pump system according to the present invention 4 to 6 is a schematic diagram illustrating the operation during the heat storage operation of the heat pump system according to the present invention.

As shown, the heat pump system 100 according to the present invention

Assuming that the compressor 10, the outdoor unit 15, the indoor unit 20, the expansion valve 21, and the four-way valve 25,

An auxiliary line connecting one of the components and the other point between the expansion valve 21 and the outdoor unit 15 and the compressor 10 and the outdoor unit 15 of the refrigerant line 13 to which the refrigerant is moved inside by connecting the components, respectively. (23); An auxiliary heat exchanger (27) installed on the auxiliary line (23) and connected in parallel with the outdoor unit (15); On the refrigerant flow path between the expansion valve 21 and the outdoor unit 15 of the refrigerant line 13, and on the refrigerant flow path between the expansion valve 21 and the auxiliary heat exchanger 27 of the auxiliary line 23. Valves 17 and 19 respectively installed at the valves to regulate the flow of the refrigerant; The heated brine refrigerant from the storage unit 30 having heating means for forcibly heating the internally stored brine refrigerant is supplied to the outdoor unit 15 and the auxiliary heat exchanger 27 through a plurality of brine refrigerant lines 40 and 50. Heating means for selectively heat exchange in the; And it is comprised including a heat storage means.

The heating means in the above

A storage unit 30 having a heater 33 as heating means for forcibly heating the brine refrigerant stored therein; A first brine refrigerant line 40 in which one point and another point are connected to the storage unit 30 so that the brine refrigerant is moved inside; A heat exchanger (41) installed on the first brine refrigerant line (40); A blower (45) forcibly blowing air from the heat exchanger (41) side to the outdoor unit (15) so that the brine refrigerant moved to the heat exchanger (41) and the outdoor unit (15) are heat transferred; A pump 47 installed on the first brine refrigerant line 40 to impart a circulation movement force to the brine refrigerant; One point is connected between the pump 47 of the first brine refrigerant line 40 and the heat exchanger 41, the other point is connected to the storage unit 30, and the brine refrigerant moved inside the auxiliary heat exchanger ( A second brine refrigerant line (50) connected to the auxiliary heat exchanger (27) so as to be circulated to the 27; A three-way valve 43 installed at a connection point of the first brine refrigerant line 40 and the second brine refrigerant line 50 to control the flow direction of the brine refrigerant pumped by the pump 47; It is composed.

In addition, the heat storage means

A brine heat exchanger 70 connected to the brine refrigerant circulating through the indoor unit 20 and the third brine refrigerant line 60, and a brine pump 65 installed on the third brine refrigerant line 60. And brine circulation comprising; After the internally stored water is heat-exchanged in the brine heat exchanger 70, the first storage tank 77 is connected to the brine heat exchanger 70 and heat transfer through the first hydrothermal line 75 so that it can be stored again; ; A pump (80) installed on a moving path through which the water of the first hydrothermal line (75) proceeds to circulate the water; After the internally stored water is heat-exchanged in the brine heat exchanger 70, the brine heat exchanger is connected to the first heat transfer line 85 through one second point and the other point connected to the first heat transfer line 75 so that the stored water may be stored again. A second reservoir 87 which is heat transferably connected to 70; A plurality of three-way valves 73a and 73b which are installed at interconnected points of the first water line 75 and the second water line 85 to control the flow direction of the water to be moved; A plurality of intermittent valves 83a and 83b installed at points connected to the external load side of the second heat receiving line 85 to control the movement of water to the external load side; In addition, one point and the other point is connected to the third brine refrigerant line 60 so that the brine refrigerant from the third brine refrigerant line 60 is directly heat exchanged in the second reservoir (87). And a brine refrigerant circulation line 90 circulating in the second reservoir 87 and a brine refrigerant circulation line 90 and a connection point between the brine refrigerant circulation line 90 and the third brine refrigerant line 60. A plurality of three-way valves (91a, 91b) to control the flow or not is composed.

In the above configuration, the auxiliary heat exchanger 27, the indoor unit 20, and the brine heat exchanger 70 are all plate heat exchangers, and the outdoor unit 15 and the heat exchanger 41 are fin tube type heat exchangers.

Meanwhile, reference numeral 11 denotes an inverter, which serves to control the driving state of the compressor.

Hereinafter, an operation relationship of the heat pump system will be described, and for convenience of description, the description will be made for each operation state.

<Cooling operation>

The inverter 11 drives the compressor 10 at a rated frequency (60 Hz). Accordingly, the refrigerant compressed at high temperature and high pressure through the compressor 10 passes through the four-way valve 25 and is condensed by the air supplied from the outdoor unit 15 through the blower 45.

Again, the condensed refrigerant is cooled to the low temperature and low pressure in the expansion valve 21, and then evaporates in the indoor unit 20 and cools the brine refrigerant moving on the third brine refrigerant line 60. Thereafter, the refrigerant is in a gas state and passes through the four-way valve 25 to be returned to the compressor 10 again.

Here, looking at the flow of the brine refrigerant,

The brine refrigerant pumped by the brine pump 65 is cooled through the indoor unit 20 as described above, and then circulated inside the brine refrigerant circulation line 90 by opening the three-way valves 91a and 91b. When the water reaches the second reservoir 87 in which water is stored, ice is formed in the second reservoir 87 and circulated to the brine pump 65 through the three-way valves 91a and 91b.

<Cooling operation>

As the compressor 10 is driven by the inverter 11 at the rated frequency, the compressed refrigerant is condensed through the outdoor unit 15 and then moved to the expansion valve 21 and the indoor unit 20. The brine refrigerant on the brine refrigerant line 60 is cooled. In addition, the refrigerant from the indoor unit 20 is returned back to the compressor 10 via the four-way valve 25.

Looking at the flow of the brine refrigerant, the brine refrigerant pumped by the brine pump 65 is cooled in the indoor unit 20, and then moved to the brine heat exchanger 70 through the three-way valve (91a). At this time, in the brine heat exchanger 70, the brine refrigerant and the water supplied from the cooling load side are heat-exchanged, and thus, the brine refrigerant having a raised temperature is circulated again through the three-way valve 91b to the brine pump 65, Is moved.

On the other hand, looking at the flow of water that is heat-exchanged with the brine refrigerant,

The water supplied from the load side is mixed with the water supplied from the second reservoir 87 and the temperature is first lowered (about 12 ° C). Again, the water mixed by the pump 80 is transferred to the brine heat exchanger 70. Heat exchange to cool the temperature sufficiently (about 7 ℃)

The cooled water is supplied to the load side again through the three-way valve 73a and the intermittent valve 83a in succession.

Heat storage operation 1

The inverter 10 is driven by the inverter 11 at a frequency in a range lower than the rated frequency. The refrigerant compressed by the compressor 10 is condensed in the indoor unit via the four-way valve 25. In this process, condensation of the refrigerant is performed by exchanging the brine refrigerant and the brine refrigerant circulating through the third brine refrigerant line 60 by the brine pump 65.

Again, the refrigerant condensed as described above is moved to the outdoor unit 15 through the expansion valve 21, which is evaporated by heat exchange with the air supplied by the blower 45 in the outdoor unit 15, and then, in a gaseous state. After passing through the four-way valve 25, it is returned to the compressor 10 again.

Here, the flow of the brine refrigerant, the brine refrigerant pumped by the brine pump 65 is heated by the heat exchange action with the refrigerant in the indoor unit 20, and then moves to the brine heat exchanger 70 to the pump 80 The water supplied is heated. Then, the brine refrigerant having a lowered temperature is moved to the brine pump 65 again.

In addition, looking at the path in which the water of the heat storage means is moved in the above process,

First, when water from the first reservoir 77 is supplied to the pump 80 via the three-way valve (73b), by the pumping operation of the pump 80, the water to the brine refrigerant in the brine heat exchanger (70) Heated by a heat exchange action, the heated water flows back into the first reservoir 77 via the three-way valve 73a. Here, when the temperature of the water stored in the first reservoir (77) reaches a predetermined temperature (60 ℃), water from the second reservoir (87) is supplied to the pump 80 through the three-way valve (73b) and supplied The water is heated by the heat exchange action with the brine refrigerant in the brine heat exchanger 70 and then recovered to the second reservoir 87. Here, the water movement to the first reservoir 77 is blocked, which is possible by the operation of the three-way valve (73a).

Heat storage operation 2

The inverter 11 drives the compressor 10 to the rated frequency according to the outside temperature in a range lower than the rated frequency. The refrigerant compressed by the driving of the compressor 10 is condensed by heat exchange with the brine refrigerant in the indoor unit 20 through the four-way valve 25 and then the blower 45 in the outdoor unit 15 via the expansion valve 21. Heat exchange with the air supplied through the evaporation, and the evaporated refrigerant is returned to the compressor 10 again.

On the other hand, the brine refrigerant movement path of the heat storage means, the brine refrigerant pumped by the brine pump 65 is heated in the indoor unit 20 is moved to the brine heat exchanger 70, the pump (in the brine heat exchanger 70) The brine coolant whose temperature is supplied to 80 is raised and whose temperature is lowered again is circulated to the brine pump 65.

In addition, looking at the movement path of the brine refrigerant of the heating means in the above process, the brine refrigerant heated by the heater 33 using the late-night electricity in the storage unit 30 is pumped by the pump 47 to the first brine refrigerant line Circulated through 40. Here, the brine refrigerant is not moved to the second brine refrigerant line 50, which is possible by the operation of the three-way valve 43. As described above, the brine refrigerant circulating in the first brine refrigerant line 40 is heat-exchanged with the air supplied from the heat exchanger 41 to the outdoor unit 15 through the blower 45 to preheat the air, and then stored again. It is circulated and moved to the part 30 side.

In addition, looking at the path in which the water of the heat storage means is moved, as described above in the heat storage operation 1 described above.

Heat storage operation 3

The compressor 10 is driven by an inverter 11 at a frequency lower than the rated frequency, and the refrigerant compressed by the compressor 10 passes through the four-way valve 25 and exchanges heat with the brine refrigerant in the indoor unit 20. After condensation by, it is changed to the low temperature and low pressure state in the expansion valve (21). Again, the refrigerant from the expansion valve 21 is not moved to the outdoor unit 15 through the refrigerant line 13 by the opening and closing operation of the valve 17 and the valve 19, and the auxiliary heat exchange through the auxiliary line 23. And the refrigerant is supplied to the pump 47 from the subsidiary heat exchanger 27 and moved to the subsidiary heat exchanger 27 through the second brine refrigerant line 50. Heat exchange and evaporate. Then, the evaporated refrigerant is returned to the compressor 10 via the four-way valve 25 again.

Here, in the brine refrigerant flow of the heat storage means, the brine refrigerant pumped by the brine pump 65 is heated by heat exchange with the refrigerant in the outdoor unit 15, the heated brine refrigerant is pumped in the brine heat exchanger 70 (80) Increase the temperature of the water supplied to the), and the brine refrigerant having a lower temperature is circulated and moved to the brine pump (65) side.

On the other hand, looking at the brine refrigerant flow of the heating means in the above,

The brine refrigerant heated by the heater 33 of the storage unit 30 using the late-night electricity is pumped by the pump 47, and the auxiliary heat exchanger through the second brine refrigerant line 50 by the opening and closing operation of the three-way valve 43. Is moved to (27). At this time, the moved brine refrigerant is relatively high in the state heated by the heater 33. This high temperature brine refrigerant is used as a heat source for refrigerant evaporation in the auxiliary heat exchanger 27. Again, the brine refrigerant that transfers heat from the auxiliary heat exchanger 27 to the refrigerant is moved to the storage unit 30.

Water movement process of the heat storage means is the same as in the heat storage operation 1,2 described above.

<Radiation operation>

In the heat dissipation operation, the flows of the refrigerant and the brine refrigerant are operated to have the same shape as the heat storage operations 1, 2, and 3 according to the outside air condition.

That is, under the rated operating conditions, it is not required to move the brine refrigerant through the first and second brine refrigerant lines to exchange heat with the refrigerant. In addition, when the temperature is relatively low, the brine refrigerant is moved to the heat exchanger 41 through the first brine refrigerant line 40 so that the air blown to the outdoor unit 15 is preheated. In addition, when the temperature of the outside air is very low temperature, the brine refrigerant is moved to the subsidiary heat exchanger 27 through the second brine refrigerant line 50, and the refrigerant is also transferred to the subsidiary heat exchanger 27 instead of the outdoor unit 15. Induction, the auxiliary heat exchanger 27 absorbs the heat of the brine refrigerant to be evaporated.

Looking at the water movement path of the heat storage means in this operation process,

The water supplied from the load side is mixed with the relatively high temperature water supplied from the second reservoir 87 in the intermittent valve 83b to raise the temperature first. (About 50 ° C) After that, the mixed water is pumped 80 It is moved to the brine heat exchanger 70 by the pumping operation of the temperature rises in accordance with the heat exchange action with the brine refrigerant in the brine heat exchanger 70 (about 60 ° C). By the operation of 73a, it is supplied to the load side again without being moved to the first reservoir 77.

On the other hand, after a certain operation, when the temperature of the water stored in the second reservoir 87 reaches a predetermined temperature (about 40 ℃) or less, the high temperature water stored in the first reservoir 77 is used. That is, when the water supplied from the load side is mixed with the water supplied from the first reservoir 77 in the three-way valve 73b, the temperature of the mixed water is increased (about 50 ° C), and the mixed water is pumped ( By the pumping operation of 80, heat is exchanged with the brine refrigerant to raise the temperature (about 60 ° C). The water whose temperature is raised in this way is again supplied to the load side via the three-way valve 73a and the intermittent valve 83a. .

As described above, according to the present invention, it can be seen that the flow direction of the brine refrigerant varies in the refrigerant and the heating means depending on the outside temperature during heating.

Hereinafter, a control method of a heat pump system according to the present invention will be described. Prior to the description, description of the brine refrigerant and water flow of the heat storage means will be avoided in order to avoid diluting the gist of the present invention.

The heat pump system 100 according to the present invention is driven by being divided into first, second, and third modes according to temperatures set in order from high temperature to low temperature based on the temperature of the outside air during heating. At this time, the outside air temperature set in the first, second, and third modes is 7 ° C. or more, 7 ° C. to −5 ° C., or less than −5 ° C., respectively.

Looking at the driving in each mode,

In the first mode

The brine refrigerant does not move on both the first brine refrigerant line 40 and the second brine refrigerant line 50, and the refrigerant 10, the indoor unit 20, the expansion valve 21, and the outdoor unit 15 in the order of the refrigerant. Works to move,

In the second mode

The refrigerant 10 is operated to move the refrigerant in the order of the compressor 10, the indoor unit 20, the expansion valve 21, and the outdoor unit 15. The first brine refrigerant is driven and controlled by the pump 47 and the three-way valve 43. The brine refrigerant is moved on the line 40 and at the same time the blower 45 is operated to release the heat of the brine refrigerant from the heat exchanger 41 to be transferred to the outdoor unit 15,

In the third mode

By driving and controlling the pump 47 and the three-way valve 43, the brine refrigerant is moved onto the second brine refrigerant line 50, and at the same time, the valves 17 and 19 are closed and opened so that the compressor ( 10), the refrigerant moved in the order of the indoor unit 20, the expansion valve 21 is moved to the auxiliary heat exchanger 27 side without passing through the outdoor unit 15 to be evaporated in the auxiliary heat exchanger 27.

As a result, as described above, when the temperature of the outside air is relatively normal temperature, the refrigerant and the brine refrigerant are operated normally without heat exchange, and when the temperature of the outside air is relatively low, the refrigerant moves to the existing refrigerant line 13. When the refrigerant is heat-exchanged, the refrigerant is heat-exchanged by the existing air heat source method, whereas when the temperature of the outside air is extremely low, the refrigerant is moved through the auxiliary line 23 instead of the existing refrigerant line 13. In addition, the refrigerant is to be easily evaporated by receiving heat from the brine refrigerant in the auxiliary heat exchanger (27), not the outdoor unit (15).

As described above, the present invention has the effect of improving the performance of the heat pump system by making the evaporation of the refrigerant to the heating means provided separately in the environmental conditions of the low outside temperature.

Specifically, when the temperature of the outside air is relatively low temperature, while the evaporation of the refrigerant in the outdoor unit by the existing air heat source method while heating the air heat-exchanged with the refrigerant at a constant, when the temperature of the outside air is cryogenic, The refrigerant is absorbed from the brine refrigerant heated in the auxiliary heat exchanger separately installed to be evaporated, there is an effect that can overcome the performance problems of the existing heat pump system caused by the decrease in the outside air temperature.

In addition, the present invention is provided with a heat storage means that can store the thermal energy of the existing system, there is an effect that can reduce the energy cost by using a midnight electricity.

Claims (6)

In a cooling and heating system including a compressor (10), an outdoor unit (15), an indoor unit (20), an expansion valve (21), and a four-way valve (25), An auxiliary line connecting one of the components and the other point between the expansion valve 21 and the outdoor unit 15 and the compressor 10 and the outdoor unit 15 of the refrigerant line 13 to which the refrigerant is moved by connecting the components ( 23); An auxiliary heat exchanger (27) installed on the auxiliary line (23) and connected in parallel with the outdoor unit (15); On the refrigerant flow path between the expansion valve 21 and the outdoor unit 15 of the refrigerant line 13, and on the refrigerant flow path between the expansion valve 21 and the auxiliary heat exchanger 27 of the auxiliary line 23. Valves 17 and 19 respectively installed at the valves to regulate the flow of the refrigerant; The heated brine refrigerant from the storage unit 30 having heating means for forcibly heating the internally stored brine refrigerant is supplied to the outdoor unit 15 and the auxiliary heat exchanger 27 through a plurality of brine refrigerant lines 40 and 50. Heating means for selectively heat exchange in the; Heat pump system having a heating means characterized in that comprises a. The method of claim 1, The auxiliary heat exchanger (27) is a plate heat exchanger, the outdoor unit (15) is a heat pump system with a heating means, characterized in that the fin tube type heat exchanger. The method of claim 1, The heating means A storage unit 30 having heating means for forcibly heating the brine refrigerant stored therein; A first brine refrigerant line 40 in which one point and another point are connected to the storage unit 30 so that the brine refrigerant is moved inside; A heat exchanger (41) installed on the first brine refrigerant line (40); A blower (45) forcibly blowing air from the heat exchanger (41) side to the outdoor unit (15) so that the brine refrigerant moved to the heat exchanger (41) and the outdoor unit (15) are heat transferred; A pump 47 installed on the first brine refrigerant line 40 to impart a circulation movement force to the brine refrigerant; One point is connected between the pump 47 of the first brine refrigerant line 40 and the heat exchanger 41, the other point is connected to the storage unit 30, and the brine refrigerant moved inside the auxiliary heat exchanger ( A second brine refrigerant line (50) connected to the auxiliary heat exchanger (27) so as to be circulated to the 27; A three-way valve 43 installed at a connection point between the first brine refrigerant line 40 and the second brine refrigerant line 50 to control a flow direction of the brine refrigerant pumped by the pump 47; Heat pump system having a heating means, characterized in that configured to include. The method according to any one of claims 1 to 3, A brine heat exchanger 70 connected to the brine refrigerant circulating through the indoor unit 20 and the third brine refrigerant line 60, and a brine pump 65 installed on the third brine refrigerant line 60. And brine circulation comprising; After the internally stored water is heat-exchanged in the brine heat exchanger 70, the first storage tank 77 is connected to the brine heat exchanger 70 and heat transfer through the first hydrothermal line 75 so that it can be stored again; ; A pump (80) installed on a moving path through which the water of the first hydrothermal line (75) proceeds to circulate the water; After the internally stored water is heat-exchanged in the brine heat exchanger 70, the brine heat exchanger (1) and the other spots are connected to the first hydrothermal line 75 through the second hydrothermal line 85 so as to be stored again. A second reservoir 87 which is heat transferably connected to 70; A plurality of three-way valves 73a and 73b which are installed at interconnected points of the first water line 75 and the second water line 85 to control the flow direction of the water to be moved; A plurality of intermittent valves 83a and 83b installed at points connected to the external load side of the second heat receiving line 85 to control the movement of water to the external load side; Heat pump system having a heating means further comprises a heat storage means configured to include. In the control method of the heat pump system according to claim 3, The heat pump system 100 is driven divided into the first, second, third mode according to the temperature set in order from high temperature to low temperature based on the temperature of the outside air during heating, In the first mode The brine refrigerant does not move on both the first brine refrigerant line 40 and the second brine refrigerant line 50, and the refrigerant 10, the indoor unit 20, the expansion valve 21, and the outdoor unit 15 in the order of the refrigerant. Works to move, In the second mode The refrigerant 10 is operated to move the refrigerant in the order of the compressor 10, the indoor unit 20, the expansion valve 21, and the outdoor unit 15. The first brine refrigerant is driven and controlled by the pump 47 and the three-way valve 43. The brine refrigerant is moved on the line 40 and at the same time the blower 45 is operated to release the heat of the brine refrigerant from the heat exchanger 41 to be transferred to the outdoor unit 15, In the third mode By driving and controlling the pump 47 and the three-way valve 43, the brine refrigerant is moved onto the second brine refrigerant line 50, and the valves 17 and 19 are closed and opened, thereby providing a compressor ( 10), the refrigerant moved in the order of the indoor unit 20, the expansion valve 21 is moved to the auxiliary heat exchanger 27 side without passing through the outdoor unit 15 to be evaporated in the auxiliary heat exchanger (27) Control method of a heat pump system provided with a heating means. The method of claim 5, The control method of the heat pump system with a heating means, characterized in that the set outside temperature in the first, second, third mode is 7 ℃ or more, 7 ℃ ~ -5 ℃, -5 ℃ or less, respectively.

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