WO2021235727A1

WO2021235727A1 - Heat pump system using air heat of bipvt

Info

Publication number: WO2021235727A1
Application number: PCT/KR2021/005433
Authority: WO
Inventors: 서영태; 최윤식
Original assignee: (주)이너지테크놀러지스
Priority date: 2020-05-20
Filing date: 2021-04-29
Publication date: 2021-11-25
Also published as: KR20210143973A

Abstract

A heat pump system using the air heat of BIPVT includes a cooling plate heat exchanger that is installed so as to be in contact with a heat emission unit of an inverter, wherein refrigerant that has yet to be suctioned into a compressor exchanges heat with the heat emission unit, and the refrigerant evaporates by additionally exchanging heat while passing through the cooling plate heat exchanger, thus increasing the capacity of the evaporator and increasing performance and efficiency. Moreover, since the temperature of the heat emission unit of the inverter can be reduced, less noise is generated as compared to the case of using a cooling fan to cool the inverter.

Description

Heat pump system using air heat of BIPVT

The present invention relates to a heat pump system using air heat of BIPVT, and more particularly, using air heat produced by a BIPVT (Building Integrated Photovoltaic Thermal) collector as a heat source of a heat pump to maximize efficiency. It relates to a heat pump system.

In general, a heat pump is a device for cooling or heating an indoor space by sequentially performing processes of compressing, condensing, expanding, and evaporating a refrigerant.

Conventional heat pumps perform only cooling and heating, and hot water supply is a type of indirect heat exchange with heating water by using an auxiliary heat source or a hot water supply tank separately. When hot water supply is required during cooling, the cooling operation is limited because hot water supply is produced by stopping the cooling operation and switching to the heating operation.

In addition, since the conventional heat pump is affected by ambient and outdoor temperature, there is a limitation in that the performance of the heat pump is rapidly deteriorated because the outdoor temperature in winter is very low.

An object of the present invention is to provide a heat pump system using the air heat of the BIPVT that can effectively use the air heat produced by the BIPVT collector.

A heat pump system using air heat of BIPVT according to the present invention includes a compressor, a plurality of heat exchangers, an expansion valve and a four-way valve, and uses a heat source of air that has absorbed heat from a BIPVT (Building Integrated Photovoltaic Thermal) collector. A pump system comprising: a hot water heat exchanger for exchanging heat with a refrigerant discharged from the compressor and a hot water heat source; a hot water supply tank having a flow path through which the hot water supply heat source absorbing heat from the hot water supply heat exchanger passes, and storing hot water supply water supplied with heat from the hot water supply heat source; a hot water supply pump installed in a flow path connecting the hot water supply heat exchanger and the hot water supply tank; a heating and cooling heat exchanger for exchanging heat with the refrigerant from the hot water supply heat exchanger; a heating and cooling water tank having an internal flow passage through which the heating and cooling heat source absorbed heat from the heating and cooling heat exchanger passes, and storing heating and cooling water exchanging heat with the heating and cooling heat source; a heating and cooling pump installed in a flow path connecting the heating and cooling heat exchanger and the heating and cooling water tank; an air heat exchanger for producing hot water by exchanging heat with air that has absorbed heat while passing through the BIPVT collector; a buffer tank configured to temporarily store the hot water produced by the air heat exchanger and preheat the water supplied from the outside; a first BIPVT heat source supply passage connecting the air heat exchanger and the buffer tank to guide hot water from the air heat exchanger to the buffer tank; a first BIPVT heat source pump installed in the first BIPVT heat source supply passage; a water supply preheating passage installed inside the buffer tank and configured to preheat the water supply while passing without being mixed with the hot water in the buffer tank; a water supply storage passage connecting the water supply preheating passage and the heating and cooling water tank to guide the water preheated in the water supply preheating passage to the heating and cooling water tank; A refrigerant passage through which the refrigerant from any one of the hot water supply heat exchanger and the air-conditioning heat exchanger passes and a hot water passage through which the hot water from the buffer tank passes are respectively formed therein, and outdoor heat exchange for exchanging the refrigerant and the hot water with each other tile; a second BIPVT heat source supply passage connecting the buffer tank and the outdoor heat exchanger to guide the hot water from the buffer tank to pass through the outdoor heat exchanger; a second BIPVT heat source pump installed in the second BIPVT heat source supply passage; Operation modes including cooling operation, cooling hot water supply operation requiring both cooling and hot water supply, heating operation, heating hot water supply operation requiring both heating and hot water supply, summer hot water supply operation requiring only hot water supply, and winter hot water supply operation, internal temperature of the hot water supply tank, the above and a controller for controlling operations of the hot water supply pump, the air conditioning pump, and the first and second BIPVT heat source pumps according to the internal temperature of the heating and cooling water tank, wherein the compressor is controlled by an inverter and connected to a suction side flow path of the compressor and a cooling plate heat exchanger provided in the heating unit of the inverter to heat exchange with the refrigerant before being sucked into the compressor to cool the heating unit of the inverter and evaporate the refrigerant, wherein the cooling plate heat exchanger includes: A cooling plate formed in a plate shape so as to be in contact with the heating unit and having a plurality of through-holes formed therein, and a plurality of cooling plates fitted to the through-holes so as to penetrate the cooling plate and through which the refrigerant before being sucked into the compressor passes. Includes refrigerant tubes.

The cooling plate includes a first cooling plate having a first semicircular groove formed on one side of the cooling plate in contact with the heat generating unit and having a first semicircular groove on the other side to be fitted with the refrigerant pipe, and is coupled to the other side of the first cooling plate, and and a second cooling plate having a second semicircular groove portion opposite to the first groove portion.

a cooling plate heat exchanger suction passage branching from the suction-side flow passage of the compressor to guide the refrigerant before being sucked into the compressor to the cooling plate heat exchanger; a first on/off valve installed between a cooling plate heat exchanger discharge flow path for guiding and a point at which the cooling plate heat exchanger suction flow path is branched from the suction side flow path of the compressor and a point where the cooling plate heat exchanger discharge flow path is merged; and a second opening/closing valve for opening and closing the cooling plate heat exchanger discharge flow path, wherein the control unit is configured to, when the temperature of the heating unit of the inverter is equal to or higher than a preset first heating unit temperature, in an open state of the first opening/closing valve The second on-off valve is opened, and when the temperature of the heating part of the inverter is less than a preset second set heating part temperature, the second on-off valve is closed.

The control unit, after opening the second opening/closing valve, when the temperature of the heat generating unit reaches the highest set temperature in which the first set heat generating unit temperature is higher than the first set heat generating unit temperature, the first open/close valve to shield

A hot gas bypass flow path installed in the discharge side flow path of the compressor to supply some of the refrigerant discharged from the compressor to the suction side flow path of the air-conditioning heat exchanger, and a hot gas flow rate control valve for opening and closing the hot gas bypass flow path It further includes, wherein the control unit controls the opening degree of the hot gas flow control valve according to the defrost operation mode or the suction side pressure of the compressor.

An economizer into which the refrigerant condensed in any one of the outdoor heat exchanger and the air-conditioning heat exchanger is introduced, is formed inside the economizer, and the refrigerant discharged from the outdoor heat exchanger during a cooling operation flows in, and the air-conditioning heat exchanger during a heating operation a first economizer flow path through which the refrigerant discharged from A second economizer flow path that exchanges heat with the refrigerant passing through the first economizer flow path, an injection flow path for guiding the refrigerant discharged from the second economizer flow path to the compressor, and the remainder of the refrigerant discharged from the first economizer flow path to the expansion valve An expansion valve suction flow path for guiding, an expansion valve discharge flow path connected to the discharge side of the expansion valve, and a cooling system that branches from the expansion valve discharge flow path and guides the refrigerant discharged from the expansion valve discharge flow path to the air-conditioning heat exchanger during cooling operation an expansion valve discharge flow path for cooling, a first check valve installed in the cooling expansion valve discharge flow path, and branched from the expansion valve discharge flow path to guide the refrigerant discharged from the expansion valve discharge flow path during heating operation to the outdoor heat exchanger It further includes a heating expansion valve discharge flow path and a second check valve installed in the heating expansion valve discharge flow path, wherein the control unit controls opening and closing of the first and second check valves according to the operation mode.

a receiver into which the refrigerant condensed in any one of the outdoor heat exchanger and the air-conditioning heat exchanger is introduced and temporarily stored; A third check valve installed in the cooling receiver inlet flow path, a heating receiver inlet channel configured to guide the refrigerant from the cooling and heating heat exchanger to the receiver during heating operation, and a fourth check valve installed in the heating receiver inlet channel and a receiver discharge passage for guiding the refrigerant from the receiver to the economizer, wherein the controller controls opening and closing of the third and fourth check valves according to the operation mode.

A first air flow path connecting the BIPVT collector and the inlet side of the air heat exchanger, an air fan installed in the first air flow path, and a second air flow path connecting the outlet side of the air heat exchanger and the BIPVT collector; , an air replenishment flow passage connected to the second air flow path to additionally introduce external air, an air replenishment flow passage valve for opening and closing the air replenishment flow passage, and the second air flow passage connected to the second air flow path. It further includes an air discharge passage for discharging air to the outside, and an air discharge passage valve for opening and closing the air discharge passage.

When the control unit operates the first BIPVT heat source pump, stops the second BIPVT heat source pump, stops the hot water supply pump, and operates the air conditioning pump during the cooling operation, heat is absorbed from the BIPVT collector A heat source of one air is transferred to the air heat exchanger, the hot water produced in the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage, and the refrigerant compressed in the compressor is transferred to the hot water heat exchanger in the four directions. After passing through the valve, the outdoor heat exchanger, the expansion valve, and the air-conditioning heat exchanger in sequence, it circulates to the compressor, heat exchange is not performed in the hot water supply heat exchanger, and in the outdoor heat exchanger, the refrigerant and the outside air exchange heat with the refrigerant. is condensed, the refrigerant is evaporated in the air-conditioning heat exchanger, the cooling/cooling heat source is cooled, the cooling/cooling heat source cools the cooling/cooling water stored in the cooling/cooling water tank, and the cooling/cooling water is used to cool the room.

When the control unit operates the first BIPVT heat source pump, stops the second BIPVT heat source pump, operates the hot water supply pump, and stops the heating/cooling pump during the summer hot water supply operation, heat is removed from the BIPVT collector The absorbed air heat source is transferred to the air heat exchanger, and the hot water produced in the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage to preheat the water supplied to the hot water supply tank, and in the compressor The compressed refrigerant passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in order, and then circulates to the compressor. It is transmitted to the hot water supply heat source, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank, heat exchange is not performed in the air-conditioning heat exchanger, and the outdoor heat exchanger serves as an evaporator.

When the control unit operates the first BIPVT heat source pump, stops the second BIPVT heat source pump, and operates both the hot water supply pump and the air conditioning pump during the cooling and hot water supply operation, the air absorbed heat from the BIPVT collector of the heat source is transferred to the air heat exchanger, and the hot water produced in the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage to preheat the water supplied to the hot water supply tank, and the refrigerant compressed in the compressor circulates to the compressor after passing through the hot water supply heat exchanger, the four-way valve, the outdoor heat exchanger, the expansion valve, and the air-conditioning heat exchanger in turn, and in the hot water supply heat exchanger, condensation heat generated while the refrigerant is condensed is the hot water supply heat source is transferred to, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank, the outdoor heat exchanger serves as a condenser, and the refrigerant is evaporated in the air conditioning heat exchanger and the cooling and heating heat source is cooled, and the heating and cooling heat source is cooled. The heat source cools the heating and cooling water stored in the heating and cooling water tank, and the heating and cooling water is used to cool the room.

When the control unit operates the first and second BIPVT heat source pumps during the heating operation, stops the hot water supply pump, and operates the heating/cooling pump, the heat source of the air that has absorbed heat from the BIPVT collector is transferred to the air heat exchanger. The hot water produced by the air heat exchanger passes through the first BIPVT heat source supply passage, the buffer tank, the second BIPVT heat source supply passage, and the outdoor heat exchanger in order to transfer heat to the outdoor heat exchanger, and is compressed by the compressor. After passing through the hot water supply heat exchanger, the four-way valve, the air conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in sequence, the refrigerant is circulated to the compressor, and heat exchange is not performed in the hot water supply heat exchanger, and the air conditioning heat exchanger The condensed heat generated in the is transferred to the heating and cooling water tank and used to heat the room, and the outdoor heat exchanger absorbs heat from the second BIPVT heat source supply flow path and evaporates it.

When the control unit operates the first and second BIPVT heat source pumps during the heating and hot water supply operation, and both the hot water supply pump and the heating/cooling pump operate, the heat source of the air absorbed by the BIPVT collector is transferred to the air heat exchanger and , the hot water produced in the air heat exchanger passes through the outdoor heat exchanger sequentially through the first BIPVT heat source supply passage, the buffer tank, and the second BIPVT heat source supply passage to transfer heat to the outdoor heat exchanger, and is compressed by the compressor. The refrigerant passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, and the expansion valve in turn, and then circulates back to the compressor. , the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank, and in the air conditioning heat exchanger, the condensed heat generated while the refrigerant is condensed is transferred to the heating and cooling water tank to be used to heat the room, and the outdoor heat exchange In the air, the refrigerant absorbs heat from the second BIPVT heat source supply passage and is evaporated.

When the control unit operates both the first BIPVT heat source pump and the second BIPVT heat source pump during the winter hot water supply operation, operates the hot water supply pump, and stops the air conditioning pump, the air absorbed heat from the BIPVT collector of the heat source is transferred to the air heat exchanger, and the hot water produced in the air heat exchanger sequentially passes through the outdoor heat exchanger through the first BIPVT heat source supply passage, the buffer tank, and the second BIPVT heat source supply passage to heat the outdoor heat exchanger. and the refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in order, and then circulates to the compressor, and in the hot water heat exchanger, the refrigerant Condensation heat generated while condensing is transferred to the hot water supply heat source, the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank, heat exchange is not performed in the air conditioning heat exchanger, and the refrigerant in the outdoor heat exchanger is evaporated by absorbing heat from the second BIPVT heat source supply passage.

A heat pump system using air heat of BIPVT according to another aspect of the present invention includes a compressor, a plurality of heat exchangers, an expansion valve and a four-way valve, and a heat source of air that has absorbed heat from a BIPVT (Building Integrated Photovoltaic Thermal) collector A heat pump system using a hot water supply tank having a flow path through which the hot water supply heat source absorbing heat from the hot water supply heat exchanger passes, and storing hot water supply water supplied with heat from the hot water supply heat source; a hot water supply pump installed in a flow path connecting the hot water supply heat exchanger and the hot water supply tank; a heating and cooling heat exchanger for exchanging heat with the refrigerant from the hot water supply heat exchanger; a heating and cooling water tank having an internal flow passage through which the heating and cooling heat source absorbed heat from the heating and cooling heat exchanger passes, and storing heating and cooling water exchanging heat with the heating and cooling heat source; a heating and cooling pump installed in a flow path connecting the heating and cooling heat exchanger and the heating and cooling water tank; an air heat exchanger for producing hot water by exchanging heat with air that has absorbed heat while passing through the BIPVT collector; a buffer tank configured to temporarily store the hot water produced by the air heat exchanger and preheat the water supplied from the outside; a first BIPVT heat source supply passage connecting the air heat exchanger and the buffer tank to guide hot water from the air heat exchanger to the buffer tank; a first BIPVT heat source pump installed in the first BIPVT heat source supply passage; a water supply preheating passage installed inside the buffer tank and configured to preheat the water supply while passing without being mixed with the hot water in the buffer tank; a water supply storage passage connecting the water supply preheating passage and the heating and cooling water tank to guide the water preheated in the water supply preheating passage to the heating and cooling water tank; A refrigerant passage through which the refrigerant from any one of the hot water supply heat exchanger and the air-conditioning heat exchanger passes and a hot water passage through which the hot water from the buffer tank passes are respectively formed therein, and outdoor heat exchange for exchanging the refrigerant and the hot water with each other tile; a second BIPVT heat source supply passage connecting the buffer tank and the outdoor heat exchanger to guide the hot water from the buffer tank to pass through the outdoor heat exchanger; a second BIPVT heat source pump installed in the second BIPVT heat source supply passage; Operation modes including cooling operation, cooling hot water supply operation requiring both cooling and hot water supply, heating operation, heating hot water supply operation requiring both heating and hot water supply, summer hot water supply operation requiring only hot water supply, and winter hot water supply operation, internal temperature of the hot water supply tank, the above and a controller for controlling operations of the hot water supply pump, the air conditioning pump, and the first and second BIPVT heat source pumps according to the internal temperature of the heating and cooling water tank, wherein the compressor is controlled by an inverter and connected to a suction side flow path of the compressor and a cooling plate heat exchanger provided in the heating unit of the inverter to heat exchange with the refrigerant before being sucked into the compressor to cool the heating unit of the inverter and evaporate the refrigerant, wherein the cooling plate heat exchanger includes: A cooling plate formed in a plate shape so as to be in contact with the heating unit and having a plurality of through-holes formed therein, and a plurality of cooling plates fitted to the through-holes so as to penetrate the cooling plate and through which the refrigerant before being sucked into the compressor passes. A first cooling plate including refrigerant tubes, wherein one side of the cooling plate is in contact with the heating unit and the other side is formed with a first semi-circular groove in which the refrigerant tube is fitted; and the other of the first cooling plate. and a second cooling plate coupled to a side surface and formed with a second semicircular groove portion opposite to the first groove portion, and is branched from the suction-side flow path of the compressor to cool the refrigerant before being sucked into the compressor. a cooling plate heat exchanger suction flow path guiding to the heat exchanger; a cooling plate heat exchanger discharge flow path guiding the refrigerant discharged from the cooling plate heat exchanger to a suction side flow path of the compressor; Further comprising: a first on/off valve installed between a point at which the suction flow path branches and a point at which the cooling plate heat exchanger discharge flow path is combined; and a second on/off valve for opening and closing the cooling plate heat exchanger discharge flow path, the control unit comprising: If the temperature of the heating part of the inverter is equal to or higher than the first preset heating part temperature, the second opening/closing valve is opened, and when the temperature of the heating part of the inverter is less than the preset second heating part temperature, the first opening and closing valve B opens, and the second on-off valve closes.

The heat pump system using air heat of the BIPVT according to the present invention includes a cooling plate heat exchanger installed to be in contact with the heat generating part of the inverter, and by exchanging heat with the refrigerant before being sucked into the compressor and the heat generating part, the refrigerant passes through the cooling plate heat exchanger By additional heat exchange and evaporation, the capacity and efficiency of the evaporator can be increased, and the temperature of the heating part of the inverter can be lowered, so that noise is reduced compared to the case of using a cooling fan to cool the inverter. there is no advantage.

In addition, there is an advantage that the coefficient of performance of the system can be maximized by absorbing the heat source of air produced by the BIPVT collector during heating operation or hot water supply operation through the outdoor heat exchanger and using it as a heat source for the heat pump cycle.

In addition, during the cooling operation, since the heat source of the air produced by the BIPVT collector can be used for preheating the water supply, there is an advantage in that the temperature of the hot water supply tank can be constantly secured.

In addition, since the condensed heat of the refrigerant is recovered from the outdoor heat exchanger during the cooling operation and transferred to the buffer tank, it can be used for preheating the water supply, so there is an advantage in that the temperature of the hot water supply tank can be kept constant.

1 is a view showing a cooling operation state of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

2 is a diagram illustrating a hot water supply operation state in summer of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

3 is a view showing a cooling and hot water supply operation state of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

4 is a view illustrating a heating operation state of a heat pump system using air heat of BIPVT according to an embodiment of the present invention.

5 is a diagram illustrating a heating and hot water supply operation state of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

6 is a view illustrating a winter hot water supply operation state of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

7 is a view illustrating a state in which a cooling plate heat exchanger is coupled to an inverter of a heat pump system according to an embodiment of the present invention.

8 is an exploded perspective view of the cooling plate heat exchanger shown in FIG. 7 .

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 , the heat pump system using air heat of BIPVT according to an embodiment of the present invention connects the BIPVT (Building Integrated Photovoltaic Thermal) hot water production cycle and the heat pump cycle, It is a system that uses a heat source.

The BIPVT hot water production cycle 100 includes the BIPVT collector 110 , the air heat exchanger 120 , the buffer tank 130 , the first air flow path 101 , the second air flow path 102 , and the air fan 103 . ), air replenishment passage 104, air replenishment passage valve 105, air discharge passage 106, air discharge passage valve 107, first BIPVT heat source supply passage 131, second BIPVT heat source supply passage 132, It includes a first BIPVT heat source pump 141 , a second BIPVT heat source pump 142 , and a water supply preheating passage 150 .

The BIPVT collector 110 is a device that replaces the exterior material of the building and is integrated with the building and absorbs sunlight to produce heat and electricity at the same time. An air passage through which air for absorbing heat passes is formed in the BIPVT collector 110 .

The air heat exchanger 120 is a heat exchanger for producing hot water by exchanging heat with air that has absorbed heat while passing through the BIPVT collector 110 .

The buffer tank 130 is a tank formed to temporarily store the hot water produced by the air heat exchanger 120 and preheat the water supplied from the outside. The buffer tank 130 and the air heat exchanger 120 are connected to the first BIPVT heat source supply passage 131 .

The water supply preheating passage 150 is a passage formed inside the buffer tank 130 to allow water supplied from the outside to pass therethrough. The water supply preheating passage 150 is separately formed so that the hot water stored in the buffer tank 130 and the water supply do not mix. The water supply preheated in the water supply preheating passage 150 is supplied to a heating and cooling water tank to be described later through the water supply storage passage 152 .

The first air flow path 101 connects the BIPVT collector 110 and the inlet of the air heat exchanger 120 to transfer the air that has absorbed heat in the BIPVT collector 110 to the air heat exchanger 120 . Euro leading to

The air fan 103 is installed in the first air flow path 101 and blows the air that has absorbed heat from the BIPVT collector 110 to the air heat exchanger 120 .

The second air flow path 102 connects the outlet of the air heat exchanger 120 and the BIPVT collector 110 to return the air cooled by heat exchange in the air heat exchanger 120 to the BIPVT collector 110 again. ) is the Euro leading to

The air replenishment flow path 104 is connected to the second air flow path 102 and is a flow path for additionally introducing external air.

The air replenishment passage valve 105 is installed at a point where the air replenishment passage 104 and the second air passage 102 are connected, and regulates the additional inflow of external air.

The air discharge flow path 106 is connected to the second air flow path 102 and is a flow path for discharging the air in the second air flow path 102 to the outside. The air discharge passage 106 is connected to a position closer to the outlet side of the air heat exchanger 120 than the air replenishment passage 104 in the second air passage 102 .

The air discharge passage valve 107 is installed at a point where the air discharge passage 106 and the second air passage 102 are connected, and regulates air discharge.

The first BIPVT heat source supply passage 131 is a passage connecting the air heat exchanger 120 and the buffer tank 130 . The first BIPVT heat source supply flow path 131 guides the hot water heated from the air heat exchanger 120 to the buffer tank 130 , and supplies the heat source of the BIPVT collector 110 to the buffer tank 130 . supply

The first BIPVT heat source pump 141 is installed at the outlet side of the buffer tank 130 in the first BIPVT heat source supply passage 131 to convert the hot water stored in the buffer tank 130 to the air heat exchanger 120 . It is a pump that pumps

The second BIPVT heat source supply passage 132 is a passage connecting the buffer tank 130 and an outdoor heat exchanger 40 to be described later. The second BIPVT heat source supply passage 132 guides the hot water stored in the buffer tank 130 to the outdoor heat exchanger 40, and transfers the heat source of the BIPVT collector 110 to the outdoor heat exchanger of the heat pump cycle. (40) is supplied.

The second BIPVT heat source pump 142 is installed at the outlet side of the buffer tank 130 in the second BIPVT heat source supply flow path 132 and converts the hot water stored in the buffer tank 130 to the outdoor heat exchanger 40 . It is a pump that pumps

The heat pump cycle includes a compressor (10), hot water heat exchanger (20), hot water supply tank (22), air-conditioning heat exchanger (30), air-conditioning water tank (32), outdoor heat exchanger (40), cold plate heat exchanger ( 50 ), an economizer 60 , a receiver 70 , a four-way valve 80 and an expansion valve 90 .

The compressor 10 is a BLDC compressor that compresses a refrigerant circulating in the heat pump cycle. The compressor 10 is an inverter compressor controlled by the inverter 300 .

The hot water supply heat exchanger 20 is a heat exchanger for exchanging the refrigerant discharged from the compressor 10 and the hot water supply water.

In the hot water supply tank 22 , time water is supplied from the outside and stored as hot water water, and an internal flow path is formed through which a hot water source, which is hot water that has absorbed heat from the hot water heat exchanger 20 , passes. The hot water supply and the hot water supply heat source are not mixed in the hot water supply tank 22 , and only heat exchange between the hot water supply water and the hot water supply heat source is performed. Here, the hot water supply heat source will be described as an example of water.

The hot water supply heat exchanger 20 and the hot water supply tank 22 are connected by a hot water supply passage 24 . A hot water supply pump 26 is installed in the hot water supply passage 24 .

The air-conditioning heat exchanger 30 is a heat exchanger that heat-exchanges the refrigerant discharged from the hot water supply heat exchanger 20 and the cooling/heating heat source.

In the cooling and heating water tank 32 , city water is supplied from the outside and stored as cooling and cooling water, and an internal flow path is formed through which a heating and cooling heat source, which is hot water that has absorbed heat from the heating and cooling heat exchanger 30 , passes. The heating and cooling water and the heating and cooling heat source are not mixed in the inside of the heating and cooling water tank 32 , and only heat exchange between the heating and cooling water and the heating and cooling heat source is performed. Here, the heating and cooling heat source will be described as an example of water.

The heating and cooling heat exchanger 30 and the cooling and heating water tank 32 are connected to each other by a heating and cooling heat source flow path 34 . A cooling/heating pump 36 is installed in the cooling/heating heat source flow path 34 .

The outdoor heat exchanger 40 is a heat exchanger that exchanges heat between the refrigerant from any one of the hot water supply heat exchanger 20 and the air-conditioning heat exchanger 30 and the hot water supplied from the buffer tank 130 and outdoor air. . A refrigerant passage 40a through which the refrigerant passes and a hot water passage 40b through which the hot water passes are formed in the outdoor heat exchanger 40 in a double coil type. The hot water flow path is a flow path connected to the second BIPVT heat source supply flow path 132 . An outdoor heat exchange fan 40c for blowing outside air is installed in the outdoor heat exchanger 40 .

The cold plate heat exchanger 50 is connected to a flow path branched from the suction side flow path 11 of the compressor 10 . More specifically, the cooling plate heat exchanger 50 branches from a main flow path 53 connecting the four-way valve 80 and the accumulator 55 among the suction side flow paths 11 of the compressor 10 . installed in the flow path.

The cooling plate heat exchanger 50 is provided in the heat generating unit 301 of the inverter 300 to cool the heat generating unit 301 of the inverter 300 using the refrigerant before being sucked into the compressor. , the refrigerant evaporates. The heating unit 301 is a current supply device (PSD, POWER SUPPLY DEVICE).

7 and 8 , the cooling plate heat exchanger 50 is formed in a plate shape so as to be in contact with the heat generating part 301 of the inverter 300 and a cooling plate having a plurality of through holes formed therein. 510 , and a plurality of refrigerant tubes 520 inserted into the through holes to pass through the cooling plate 510 , and through which the refrigerant passes.

The cooling plate 510 is formed to be in contact with the heat generating unit 301 . It will be described as an example in which the two first and

second cooling plates

511 and 512 of the cooling plate 510 are coupled to each other.

One side of the first cooling plate 511 is formed as a flat surface to be in contact with the heat generating unit 301 , and a first groove portion 511a having a semicircular shape is formed on the other side of the first cooling plate 511 so that the refrigerant pipe 520 is fitted. do.

The second cooling plate 512 is coupled to the other side of the first cooling plate 511 . The second cooling plate 512 is formed with a second groove portion 512a having a semicircular shape opposite to the first groove portion 511a, so that the first groove portion 511a and the second groove portion 512a pass through the second cooling plate 512 . form a hall

The first and

second cooling plates

511 and 512 may be fastened to the heating unit 301 by a plurality of fastening members 530 . The fastening member 530 will be described as an example of a fastening bolt. A fastening hole 531 through which the fastening member 530 is fastened is formed in the first and

second cooling plates

511 and 512 , and a fastening hole through which the fastening member 530 is fastened also to the heating part 301 . 301a is formed. However, the present invention is not limited thereto, and the first and

second cooling plates

511 and 512 are fastened and fixed by the fastening member 530 , and the cooling plate 510 and the heat generating unit 301 are connected to the fastening member. It may be fixed with a coupling member or an adhesive member other than the 530 .

Each of the refrigerant tubes 520 has one end connected to a cooling plate heat exchanger suction passage 51 to be described later, and the other end connected to a cooling plate heat exchanger discharge passage 52 to be described later. That is, the refrigerant pipes 520 are a plurality of pipes branched from the cooling plate heat exchanger suction passage 51 through which the refrigerant passes, and after passing through the cooling plate 510 , the cooling plate heat exchanger is discharged again. It is laminated to the flow path (52).

A cooling plate heat exchanger suction passage 51 and a cooling plate heat exchanger discharge passage 52 are connected to the cold plate heat exchanger 50 .

The cooling plate heat exchanger suction flow path 51 is a flow path branching from the main flow path 53 and guiding the refrigerant before being sucked into the compressor 10 to the cooling plate heat exchanger 50 .

The cooling plate heat exchanger discharge flow path 52 is a flow path for guiding the refrigerant discharged from the cooling plate heat exchanger 50 to the suction side flow path 11 of the compressor 10 .

A first opening/closing valve 54 is installed between a point where the cooling plate heat exchanger suction passage 51 is branched from the main flow passage 53 and a point where the cooling plate heat exchanger discharge passage 52 is combined.

The first on/off valve 54 is a flow control valve that controls the flow rate sucked into the compressor 10 . When the first on/off valve 54 is closed, the refrigerant flows into the cooling plate heat exchanger 50 .

A second on-off valve 56 for controlling the refrigerant discharged from the cooling plate heat exchanger 50 is installed in the cooling plate heat exchanger discharge passage 52 .

The opening and closing of the first and second opening/

closing valves

54 and 56 are controlled by the control unit.

The control unit opens the first on-off valve 54 when the compressor 10 is operated.

When the temperature of the heating part 301 of the inverter 300 is equal to or higher than the first preset heating part temperature, the second on-off valve 56 in the state in which the first on-off valve 54 is opened open up After the second on-off valve 56 is opened, when the temperature of the heating part 301 does not fall below the first set heating part temperature and reaches the maximum set temperature set higher than the first set heating part temperature, the The control unit blocks the first on/off valve 54 .

In addition, when the temperature of the heating part 301 of the inverter 300 is equal to or less than the second set heating part temperature, the control unit blocks the second on-off valve 56 .

Here, the first set heating part temperature is about 75 ℃, the second set heating part temperature will be described as an example of about 70 ℃. However, the present invention is not limited thereto, and the first and second set temperature of the heating unit may be preset to an optimal temperature through an experiment or the like. In addition, the first and second opening/

closing valves

54 and 56 may be manually operated if necessary.

An accumulator 55 is installed between the cooling plate heat exchanger 50 and the compressor 10 .

An oil separator 13 is installed in the discharge-side flow path 12 of the compressor 10 .

A hot gas bypass passage 14 is branched from the discharge-side passage 12 of the compressor 10 .

The hot gas bypass passage 14 is a passage for supplying a portion of the refrigerant from the compressor 10 to the suction-side passage of the air-conditioning heat exchanger 30 .

A hot gas flow control valve 15 for controlling the flow rate is installed in the hot gas bypass passage 14 . The hot gas flow control valve 15 is controlled according to the defrost operation mode or the suction side pressure of the compressor 10 .

The economizer 60 is installed so that the refrigerant condensed in any one of the outdoor heat exchanger 40 and the air-conditioning heat exchanger 30 flows in.

A first economizer flow path 60a and a second economizer flow path 60b are formed inside the economizer 60 .

The first economizer flow path 60a is a flow path through which the refrigerant discharged from the outdoor heat exchanger 40 flows in during a cooling operation, and into which the refrigerant discharged from the air conditioning heat exchanger 30 flows during a heating operation.

The second economizer flow path 60b is formed separately from the first economizer flow path 60a and exchanges heat with a refrigerant passing through the first economizer flow path 60a. In the second economizer flow path 60b, refrigerant from a branch flow path 61 to be described later flows in.

The branch flow path 61 is a flow path branching from the discharge side flow path of the economizer 60 and guiding some of the refrigerant discharged from the economizer 60 to the second economizer flow path 60b.

The branch flow path 61 is provided with a branch opening/closing valve 62 for controlling opening and closing of the flow path, and a branch flow control valve 63 for controlling the flow rate of the refrigerant passing through the branch flow path 61 . The opening/closing of the branch opening/closing valve 62 is controlled according to the temperature of the refrigerant discharged from the economizer 60 through the second economizer flow path 60b.

The economizer 60 and the compressor 10 are connected by an injection flow path 65 .

The injection flow path 65 is a flow path for injecting the refrigerant discharged from the second economizer flow path 60b toward the suction side of the compressor 10 .

A first injection flow control valve 66 is installed in the injection flow path 65 .

An injection branch passage 67 for guiding a portion of the refrigerant discharged from the second economizer passage 60b toward the suction side of the accumulator 55 is branched from the injection passage 65 .

A second injection flow control valve 68 is installed in the injection branch passage 67 .

The receiver 70 is installed on the upstream side of the economizer 60 , and the refrigerant condensed in any one of the outdoor heat exchanger 40 and the air-conditioning heat exchanger 30 flows in and is temporarily stored.

To the suction flow path 71 of the receiver 70 , the receiver inflow path 72 for cooling and the receiver inflow path 73 for heating are connected.

The cooling receiver inflow passage 72 is formed to guide the refrigerant from the outdoor heat exchanger 40 to the receiver 70 during the cooling operation. The cooling receiver inlet passage 72 connects the first refrigerant passage 41 that is the discharge passage of the outdoor heat exchanger 40 and the intake passage 71 of the receiver 70 during the cooling operation. it is euro

A third check valve 203 is installed in the cooling receiver inlet passage 72 to prevent backflow during heating operation.

The heating receiver inlet flow path 73 is a flow path formed to guide the refrigerant from the air-conditioning heat exchanger 30 to the receiver 70 during heating operation. The heating receiver inlet passage 73 is a passage connecting the third refrigerant passage 43 that is the discharge passage of the air-conditioning heat exchanger 30 and the suction passage 71 of the receiver 70 during the heating operation. am.

A fourth check valve 204 is installed in the heating receiver inlet flow path 73 to prevent reverse flow during cooling operation.

A receiver discharge passage 75 is connected to the discharge side of the receiver 70 . The receiver discharge passage 75 is a passage for guiding the refrigerant discharged from the receiver 70 to the economizer 60 . The receiver discharge passage 75 connects the receiver 70 and the first economizer passage 60a.

The expansion valve 90 is an expansion device that expands the refrigerant discharged from the economizer 60 . The expansion valve suction flow path 91 is connected to the suction side of the expansion valve 90 , and the expansion valve discharge flow path 92 is connected to the discharge side.

The expansion valve discharge flow path 92 is branched into a cooling expansion valve discharge flow path 93 and a heating expansion valve discharge flow path 94 .

The cooling expansion valve discharge flow path 93 is a flow path for guiding the refrigerant discharged from the expansion valve 90 to the air conditioning heat exchanger 30 during cooling operation. The cooling expansion valve discharge passage 93 is connected to the third refrigerant passage 43 .

A first check valve 201 is installed in the cooling expansion valve discharge passage 93 to prevent reverse flow during heating operation.

The heating expansion valve discharge flow path 94 is a flow path for guiding the refrigerant discharged from the expansion valve 90 to the outdoor heat exchanger 40 during a heating operation. The heating expansion valve discharge passage 94 is connected to the first refrigerant passage 41 .

A second check valve 202 is installed in the heating expansion valve discharge passage 94 to prevent reverse flow during cooling operation.

The four-way valve 80 is a valve that switches the direction of the flow path according to the operation mode.

Meanwhile, in the system, an operation mode including a cooling operation, a cooling hot water supply operation requiring both cooling and hot water supply, a heating operation, a heating hot water supply operation requiring both heating and hot water supply, and a hot water supply operation requiring only hot water supply, of the hot water supply tank 22 A controller (not shown) for controlling the operation of the hot water supply pump 26, the air conditioning pump 36, and the first and second BIPVT heat source pumps 141 and 142 according to the internal temperature and the internal temperature of the heating and cooling water tank 32 city) is further included.

The system also includes a plurality of sensors. The plurality of sensors include a first temperature sensor 201 installed in the suction-side passage 11 of the compressor 10 , second and third temperature sensors 202 and 203 installed in the hot water supply passage 24 , and the The fourth and fifth temperature sensors 204 and 205 installed in the heating and cooling heat source flow path 34, the sixth temperature sensor 206 installed in the first refrigerant flow path, and the refrigerant flow path 40a of the outdoor heat exchanger 40 The seventh temperature sensor 207 installed, the eighth temperature sensor 208 installed in the second BIPVT heat source supply passage 132 , the ninth temperature sensor 209 installed in the hot water supply tank 22 , and the heating and cooling water tank 32 ) and a tenth temperature sensor 210 installed in the eleventh temperature sensor 211 installed in the injection passage 65 .

The cooling operation state of the heat pump according to the embodiment of the present invention configured as described above will be described as follows.

Referring to FIG. 1 , during cooling operation, the controller (not shown) operates the first BIPVT heat source pump 141 , stops the second BIPVT heat source pump 142 , and the hot water pump 26 operates stopped, and the heating/cooling pump 136 operates.

When the first BIPVT heat source pump 141 is operated, the heat source of the air that has absorbed heat from the BIPVT collector 110 is transferred to the air heat exchanger 120 .

The hot water heated by the air in the air heat exchanger 120 is stored in the buffer tank 130 through the first BIPVT heat source supply passage 131 .

In addition, the water supply preheating passage 150 is formed in the buffer tank 130 , so that water supplied from the outside can be preheated by exchanging heat with the hot water. The water supply preheated in the buffer tank 130 is stored in the hot water supply tank 22 through the water supply storage passage 152 . That is, the heat source stored in the buffer tank 130 through the first BIPVT heat source supply passage 131 may be used to preheat the water supplied to the hot water supply tank 22 .

Since water supplied from the outside is preheated in the buffer tank 130 and then stored in the hot water supply tank 22 , the temperature of the hot water supply tank 22 can be maintained within a predetermined range.

Meanwhile, the flow of the refrigerant during the cooling operation will be described as follows.

The refrigerant compressed in the compressor (10) is the hot water heat exchanger (20), the four-way valve (80), the outdoor heat exchanger (40), the receiver (70), the economizer (60), and the expansion valve ( 90), after passing through the air-conditioning heat exchanger 30 and the cooling plate heat exchanger 50 in sequence, it circulates back to the compressor 10 .

The refrigerant compressed in the compressor 10 flows into the hot water heat exchanger 20 .

At this time, since the hot water supply pump 26 is not operated, the refrigerant does not heat exchange in the hot water supply heat exchanger 20 .

The refrigerant from the hot water supply heat exchanger (20) flows into the outdoor heat exchanger (40) through the four-way valve (80). The refrigerant not heat-exchanged in the hot water supply heat exchanger 20 flows into the outdoor heat exchanger 40 in a high temperature state.

In the outdoor heat exchanger 40, heat exchange between the refrigerant and outdoor air is performed. The outdoor heat exchanger 40 serves as a refrigerant condenser. In the outdoor heat exchanger 40 , heat of condensation is generated as the refrigerant is condensed.

As described above, during the cooling operation, the outdoor heat exchanger 40 serves as a condenser of the refrigerant.

The outdoor heat exchange fan 40c operates when the condensing pressure of the refrigerant exceeds a preset pressure.

The refrigerant from the outdoor heat exchanger 40 passes through the receiver 70 , the economizer 60 , and the expansion valve 90 in order, and then flows into the air-conditioning heat exchanger 30 .

At this time, the control unit (not shown) intermittently controls the opening and closing of the branch opening/closing valve 62 according to the temperature sensed by the eleventh temperature sensor 211 .

When the branch opening/closing valve 62 opens the branch flow path 61 , some of the refrigerant that has passed through the economizer 60 flows back into the second economizer flow path 60b through the branch flow path 61 . .

In the economizer 60 , heat exchange between the refrigerant passing through the first economizer channel 60a and the refrigerant passing through the second economizer channel 60b is performed.

The refrigerant heated in the second economizer passage 60b is injected into the suction side of the compressor 10 through the injection passage 65 .

The refrigerant discharged from the economizer 60 is expanded and cooled by the expansion valve 90 , and then flows into the air-conditioning heat exchanger 30 .

In the air-conditioning heat exchanger 30, heat exchange is made between the refrigerant and the air-conditioning heat source, so that the refrigerant is evaporated and the air-conditioning heat source is cooled. That is, during the cooling operation, the air conditioning heat exchanger 30 serves as an evaporator of the refrigerant.

The cooling and heating heat source cooled in the heating and cooling heat exchanger 30 flows into the cooling and heating water tank 32 .

In the cooling and heating water tank 32 , heat exchange is performed between the heating and cooling heat source and the cooling and heating water, and the cooling and heating heat source cools the heating and cooling water.

The cooling and heating water stored in the heating and cooling water tank 32 and cooled by the heating and cooling heat source is used to cool the room. For example, it is used as a refrigerant of a cooling device installed in a room, and can be used to cool indoor air.

The refrigerant evaporated from the air-conditioning heat exchanger 30 passes through the cooling plate heat exchanger 50 or passes through the cooling plate heat exchanger 50 according to the operation of the first and second opening/

closing valves

54 and 56 . After bypassing, it is circulated to the compressor 10 .

When the temperature of the heating part 301 of the inverter 300 is equal to or higher than the first set heating part temperature, the first on-off valve 54 is opened to cool the heating part 301 of the inverter 300 . In this state, the second on/off valve 56 is opened to guide the refrigerant to the cooling plate heat exchanger 50 .

As the refrigerant is additionally heat-exchanged and evaporated while passing through the cooling plate heat exchanger 50 , the capacity of the evaporator is increased, and thus capability and efficiency can be increased.

In addition, the refrigerant may lower the temperature of the heating part of the inverter. By using the refrigerant as described above, there is an advantage in that there is no noise compared to the case of using a cooling fan to cool the inverter.

On the other hand, after the second on-off valve 56 is opened, the temperature of the heating part 301 does not fall below the first set heating part temperature and reaches the highest set temperature set higher than the first set heating part temperature. Then, the control unit blocks the first on-off valve 54 . That is, when the first on-off valve 54 is closed and the second on-off valve 56 is opened, all of the refrigerant passes through the cooling plate heat exchanger 50 , so that the heat generating unit 301 operates more quickly. can be cooled down.

When the temperature of the heating part 301 of the inverter 300 falls below the second set heating part temperature, the first on-off valve 54 opens and the second on-off valve 56 is closed, The refrigerant is guided to bypass the cold plate heat exchanger (50).

During the cooling operation as described above, the heat source produced by the BIPVT collector 110 is stored in the buffer tank 130 and used to preheat the water supplied to the hot water supply tank 22 .

Meanwhile, the hot water supply operation in summer will be described as follows.

2 is a diagram illustrating a hot water supply operation state of a heat pump system using air heat of a BIPVT according to an embodiment of the present invention.

Referring to FIG. 2, during summer hot water supply operation, the controller (not shown) operates the first BIPVT heat source pump 141, stops the second BIPVT heat source pump 142, and the hot water supply pump 26 operates, and the heating/cooling pump 136 stops the operation.

The heat source stored in the buffer tank 130 through the first BIPVT heat source supply passage 131 may be used to preheat the water supplied to the hot water supply tank 22 .

On the other hand, the refrigerant compressed in the compressor 10 is the hot water heat exchanger 20 , the four-way valve 80 , the air-conditioning heat exchanger 30 , the receiver 70 , the economizer 60 , and the expansion After passing through the valve 90 and the outdoor heat exchanger 40 in order, it circulates back to the compressor 10 .

The refrigerant discharged from the compressor (10) flows into the hot water heat exchanger (20).

In the hot water supply heat exchanger 20, heat exchange is performed between the refrigerant and the hot water supply heat source, and the heat of the refrigerant is transferred to the hot water supply heat source, and the hot water supply heat source is heated.

The hot water supply heat source heated in the hot water supply heat exchanger 20 flows into the hot water supply tank 22 .

In the hot water supply tank 22, heat exchange between the hot water supply heat source and the hot water supply water is performed, and the heat from the hot water supply heat source is transferred to the hot water supply water. The hot water supply is used for hot water supply.

The refrigerant, which has been deprived of heat from the hot water supply heat exchanger (20), flows into the air-conditioning heat exchanger (30) through the four-way valve (80).

Since the operation of the air-conditioning pump 36 is stopped, heat exchange is not performed in the air-conditioning heat exchanger 30 .

The refrigerant that has passed through the air-conditioning heat exchanger 30 passes through the receiver 70 , the economizer 60 , and the expansion valve 90 in sequence, and then flows into the outdoor heat exchanger 40 .

During the hot water supply operation, the outdoor heat exchanger functions as an evaporator, and the outdoor heat exchange fan 40c operates when the evaporation pressure of the refrigerant is less than or equal to a preset pressure.

The operation of the outdoor heat exchange fan 40c is stopped, and heat exchange is not performed in the outdoor heat exchanger 40 .

At this time, the use of the cooling plate heat exchanger 50 is controlled according to the temperature of the heating part of the inverter.

As described above, during the hot water supply operation in summer, the heat source produced by the BIPVT collector 110 is stored in the buffer tank 130 and used to preheat the water supplied to the hot water supply tank 22 .

Meanwhile, the cooling and hot water supply operation will be described as follows.

Referring to FIG. 3 , during cooling hot water supply operation, the controller (not shown) operates the first BIPVT heat source pump 141 , stops the second BIPVT heat source pump 142 , and operates the hot water supply pump 26 and All of the heating and cooling pumps 136 are also operated.

On the other hand, the refrigerant compressed in the compressor 10 is the hot water heat exchanger 20 , the four-way valve 80 , the outdoor heat exchanger 40 , the receiver 70 , the economizer 60 , and the expansion After passing through the valve 90 and the air-conditioning heat exchanger 30 in sequence, it circulates back to the compressor 10 .

The high-temperature refrigerant from the compressor 10 flows into the hot water heat exchanger 20 .

In the hot water supply heat exchanger 20, heat exchange is performed between the high-temperature refrigerant and the hot water supply heat source, and the heat of the refrigerant is transferred to the hot water supply heat source, and the hot water supply heat source is heated.

The refrigerant from the hot water supply heat exchanger (20) flows into the outdoor heat exchanger (40) through the four-way valve (80).

During the cooling and hot water supply operation, the outdoor heat exchanger 40 functions as a condenser, and the outdoor heat exchange fan 40c operates when the condensing pressure of the refrigerant exceeds a preset pressure.

In the air-conditioning heat exchanger 30, heat exchange is made between the refrigerant and the air-conditioning heat source, so that the refrigerant is evaporated and the air-conditioning heat source is cooled.

closing valves

54 and 56 . After bypassing, it is circulated to the compressor 10 .

When the temperature of the heating part 301 of the inverter 300 is less than the second set heating part temperature, the first on-off valve 54 is opened and the second on-off valve 56 is closed, and the refrigerant guides the cooling plate heat exchanger 50 to bypass.

As described above, during the cooling and hot water supply operation, the heat source produced by the BIPVT collector 110 is stored in the buffer tank 130 and used to preheat the water supplied to the hot water supply tank 22 .

Meanwhile, the heating operation will be described as follows.

Referring to FIG. 4 , during heating operation, the control unit (not shown) operates the first and second BIPVT heat source pumps 141 and 142 , stops the hot water supply pump 26 , and the heating/cooling pump 136 . ) works.

When the first and second BIPVT heat source pumps 141 and 142 are operated, the heat source of air that has absorbed heat from the BIPVT collector 110 is transferred to the air heat exchanger 120 .

The hot water stored in the buffer tank 130 is supplied to the outdoor heat exchanger 40 through the second BIPVT heat source supply passage 132 .

On the other hand, the refrigerant compressed in the compressor 10 is the hot water heat exchanger 20 , the four-way valve 80 , the air-conditioning heat exchanger 30 , the receiver 70 , the economizer 60 , and the expansion After passing through the valve 90 and the outdoor heat exchanger 30 in sequence, it circulates back to the compressor 10 .

The refrigerant from the hot water supply heat exchanger 20 flows into the air conditioning heat exchanger 30 through the four-way valve 80 .

In the air-conditioning heat exchanger 30, heat exchange is made between the high-temperature refrigerant and the air-conditioning heat source, so that the refrigerant is condensed and the air-conditioning heat source is heated. That is, during the heating operation, the air-conditioning heat exchanger 30 serves as a condenser.

The heating and cooling heat source heated in the heating and cooling heat exchanger 30 flows into the heating and cooling water tank 32 .

In the heating/cooling water tank 32, heat exchange is made between the cooling/cooling heat source and the cooling/cooling water, and the cooling/cooling heat source heats the cooling/cooling water.

The heating and cooling water stored in the heating and cooling water tank 32 and heated by the heating and cooling heat source is used to heat the room. For example, it is used as a refrigerant of a heating device installed in a room, and can be used to heat the room.

During the heating operation, the outdoor heat exchanger functions as an evaporator, and the outdoor heat exchange fan 40c operates when the evaporation pressure of the refrigerant is less than or equal to a preset pressure.

The refrigerant discharged from the economizer 60 is expanded and cooled by the expansion valve 90 and then flows into the outdoor heat exchanger 40 .

In the outdoor heat exchanger 40 , heat exchange is performed between the refrigerant and the hot water introduced through the second BIPVT heat source supply passage 132 . In the outdoor heat exchanger 40, the refrigerant receives the heat of the hot water. That is, during the heating operation, the outdoor heat exchanger 40 functions as an evaporator.

The refrigerant heated in the outdoor heat exchanger 40 passes through the cooling plate heat exchanger 50 or bypasses the cooling plate heat exchanger 50 according to the operation of the first and second opening/

closing valves

54 and 56 . After passing, it is circulated to the compressor (10).

During the heating operation as described above, the heat source produced by the BIPVT collector 110 is stored in the buffer tank 130 and transferred to the outdoor heat exchanger 40 through the second BIPVT heat source supply passage 132 .

On the other hand, the heating and hot water supply operation will be described as follows.

Referring to FIG. 5 , during the heating and hot water supply operation, the controller (not shown) operates the first and second BIPVT heat source pumps 141 and 142 , and both the hot water supply pump 26 and the air conditioning pump 136 are also operated. make it work

On the other hand, the refrigerant compressed in the compressor 10 is the hot water heat exchanger 20 , the four-way valve 80 , the air-conditioning heat exchanger 30 , the receiver 70 , the economizer 60 , and the expansion After passing through the valve 90 and the outdoor heat exchanger 40 in sequence, it circulates back to the compressor 10 .

In the air-conditioning heat exchanger 30, heat exchange is made between the high-temperature refrigerant and the air-conditioning heat source, so that the refrigerant is condensed and the air-conditioning heat source is heated. That is, during the heating and hot water supply operation, the air-conditioning heat exchanger 30 serves as a condenser.

During the heating and hot water supply operation, the outdoor heat exchanger 40 functions as an evaporator, and the outdoor heat exchange fan 40c operates when the evaporation pressure of the refrigerant is less than or equal to a preset pressure.

In the outdoor heat exchanger 40, heat exchange between the refrigerant and the hot water is performed. In the outdoor heat exchanger 40, the refrigerant receives the heat of the hot water. That is, during the heating and hot water supply operation, the outdoor heat exchanger 40 functions as an evaporator.

closing valves

54 and 56 . After passing, it is circulated to the compressor (10).

As described above, in the present invention, the heat source of the air produced by the BIPVT collector 110 is absorbed through the outdoor heat exchanger 40 during heating operation or hot water supply operation, and used as a heat source of the heat pump cycle. Accordingly, there is an advantage that the coefficient of performance can be maximized.

In addition, in the present invention, since the heat source of the air produced by the BIPVT collector 110 can be used for preheating the water supply during the cooling operation, there is an advantage in that the temperature of the hot water supply tank can be constantly secured. In addition, during the cooling operation, the condensed heat of the refrigerant is recovered from the outdoor heat exchanger 40 and transferred to the buffer tank 130, so that it can be used for preheating the water supply, thereby ensuring a constant temperature of the hot water supply tank there is this

Meanwhile, the operation of hot water supply in winter will be described as follows.

Referring to FIG. 6 , during winter hot water supply operation, the control unit (not shown) operates both the first BIPVT heat source pump 141 and the second BIPVT heat source pump 142, and the hot water supply pump 26 operates, The air conditioning pump 136 stops the operation.

During the hot water supply operation, the outdoor heat exchanger 40 functions as an evaporator, and the outdoor heat exchange fan 40c operates when the evaporation pressure of the refrigerant is less than or equal to a preset pressure.

The operation of the outdoor heat exchange fan 40c is stopped, and heat exchange between the refrigerant and the hot water is performed in the outdoor heat exchanger 40 . In the outdoor heat exchanger 40, the refrigerant receives the heat of the hot water. That is, the outdoor heat exchanger 40 serves as an evaporator during hot water supply operation in winter when the outdoor temperature is low.

closing valves

54 and 56 . After passing, it is circulated to the compressor (10).

Although the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

According to the present invention, it is possible to manufacture a heat pump system using the air heat of BIPVT that can maximize efficiency.

Claims

a compressor, a plurality of heat exchangers, an expansion valve and a four-way valve;

In a heat pump system using a heat source of air that has absorbed heat from a BIPVT (Building Integrated Photovoltaic Thermal) collector,

a hot water heat exchanger for exchanging heat with the refrigerant discharged from the compressor and a hot water heat source;

a hot water supply tank having a flow path through which the hot water supply heat source absorbing heat from the hot water supply heat exchanger passes, and storing hot water supply water supplied with heat from the hot water supply heat source;

a hot water supply pump installed in a flow path connecting the hot water supply heat exchanger and the hot water supply tank;

a heating and cooling heat exchanger for exchanging heat with the refrigerant from the hot water supply heat exchanger;

a heating and cooling water tank having an internal flow passage through which the heating and cooling heat source absorbed heat from the heating and cooling heat exchanger passes, and storing heating and cooling water exchanging heat with the heating and cooling heat source;

a heating and cooling pump installed in a flow path connecting the heating and cooling heat exchanger and the heating and cooling water tank;

an air heat exchanger for producing hot water by exchanging heat with air that has absorbed heat while passing through the BIPVT collector;

a buffer tank configured to temporarily store the hot water produced by the air heat exchanger and preheat the water supplied from the outside;

a first BIPVT heat source supply passage connecting the air heat exchanger and the buffer tank to guide hot water from the air heat exchanger to the buffer tank;

a first BIPVT heat source pump installed in the first BIPVT heat source supply passage;

a water supply preheating passage installed inside the buffer tank and configured to preheat the water supply while passing without being mixed with the hot water in the buffer tank;

a water supply storage passage connecting the water supply preheating passage and the heating and cooling water tank to guide the water preheated in the water supply preheating passage to the heating and cooling water tank;

A refrigerant passage through which the refrigerant from any one of the hot water supply heat exchanger and the air-conditioning heat exchanger passes and a hot water passage through which the hot water from the buffer tank passes are respectively formed therein, and outdoor heat exchange for exchanging the refrigerant and the hot water with each other tile;

a second BIPVT heat source supply passage connecting the buffer tank and the outdoor heat exchanger to guide the hot water from the buffer tank to pass through the outdoor heat exchanger;

a second BIPVT heat source pump installed in the second BIPVT heat source supply passage;

Operation modes including cooling operation, cooling hot water supply operation requiring both cooling and hot water supply, heating operation, heating hot water supply operation requiring both heating and hot water supply, summer hot water supply operation requiring only hot water supply, and winter hot water supply operation, internal temperature of the hot water supply tank, the above A control unit for controlling the operation of the hot water supply pump, the air conditioning pump, and the first and second BIPVT heat source pumps according to the internal temperature of the heating and cooling water tank,

The compressor is controlled by an inverter,

and a cooling plate heat exchanger connected to the suction side flow path of the compressor and provided in the heating part of the inverter to exchange heat with the refrigerant before being sucked into the compressor to cool the heating part of the inverter and evaporate the refrigerant,

The cold plate heat exchanger,

a cooling plate formed in a plate shape so as to be in contact with the heating part of the inverter and having a plurality of through-holes formed therein;

A heat pump system using air heat of a BIPVT comprising a plurality of refrigerant tubes fitted into the through holes to pass through the cooling plate and through which refrigerant before being sucked into the compressor passes.
The method according to claim 1,

The cooling plate is

a first cooling plate having a semicircular first groove formed on one side thereof to be in contact with the heating unit and the other side to be fitted with the refrigerant pipe;

A heat pump system using air heat of a BIPVT comprising a second cooling plate coupled to the other side of the first cooling plate and having a second semicircular groove portion opposite to the first groove portion.
The method according to claim 1,

a cooling plate heat exchanger suction flow path branched from the suction side flow path of the compressor and guiding the refrigerant before being sucked into the compressor to the cooling plate heat exchanger;

a cooling plate heat exchanger discharge flow path for guiding the refrigerant discharged from the cooling plate heat exchanger to a suction side flow path of the compressor;

a first opening/closing valve installed between a point where the cooling plate heat exchanger suction flow path is branched from the suction side flow path of the compressor and a point where the cooling plate heat exchanger discharge flow path is merged;

Further comprising a second on-off valve for opening and closing the cooling plate heat exchanger discharge flow path,

The control unit is

When the temperature of the heating part of the inverter is equal to or higher than the first preset heating part temperature, the second on-off valve is opened in the state in which the first on-off valve is opened,

When the temperature of the heating part of the inverter is less than the second preset heating part temperature, the second on-off valve is shielded. A heat pump system using air heat of the BIPVT.
4. The method according to claim 3,

The control unit is

After opening the second on-off valve, when the temperature of the heating unit reaches the highest set temperature set by the first set heat generating unit temperature is higher than the first set heat generating unit temperature,

A heat pump system using air heat of a BIPVT that shields the first open/close valve.
The method according to claim 1,

a hot gas bypass flow path installed in the discharge side flow path of the compressor and supplying some of the refrigerant discharged from the compressor to the suction side flow path of the air conditioning heat exchanger;

Further comprising a hot gas flow control valve for opening and closing the hot gas bypass flow path,

The control unit is a heat pump system using air heat of a BIPVT for controlling an opening degree of the hot gas flow control valve according to a defrosting operation mode or a suction side pressure of the compressor.
The method according to claim 1,

an economizer into which the refrigerant condensed in any one of the outdoor heat exchanger and the air-conditioning heat exchanger flows;

a first economizer flow path formed inside the economizer, through which the refrigerant discharged from the outdoor heat exchanger flows in during a cooling operation and through which the refrigerant discharged from the air conditioning heat exchanger flows in during a heating operation;

a branch passage through which a portion of the refrigerant discharged from the first economizer passage is branched;

a second economizer flow path formed inside the economizer, through which the refrigerant passing through the branch flow path is introduced and heat-exchanged with the refrigerant passing through the first economizer flow path;

an injection flow path for guiding the refrigerant discharged from the second economizer flow path to the compressor;

an expansion valve suction flow path for guiding the remainder of the refrigerant from the first economizer flow path to the expansion valve;

an expansion valve discharge passage connected to the discharge side of the expansion valve;

a cooling expansion valve discharge passage branched from the expansion valve discharge passage and guiding the refrigerant discharged from the expansion valve discharge passage to the heating and cooling heat exchanger during a cooling operation;

a first check valve installed in the cooling expansion valve discharge passage;

a heating expansion valve discharge flow path branched from the expansion valve discharge flow path to guide the refrigerant discharged from the expansion valve discharge flow path to the outdoor heat exchanger during heating operation;

Further comprising a second check valve installed in the discharge passage for the heating expansion valve,

The control unit, a heat pump system using the air heat of the BIPVT to control the opening and closing of the first and second check valves according to the operation mode.
7. The method of claim 6,

a receiver into which the refrigerant condensed in any one of the outdoor heat exchanger and the air-conditioning heat exchanger is introduced and temporarily stored;

a cooling receiver inflow passage formed to guide the refrigerant from the outdoor heat exchanger to the receiver during a cooling operation;

a third check valve installed in the cooling receiver inlet passage;

a heating receiver inflow passage formed to guide the refrigerant from the air conditioning heat exchanger to the receiver during heating operation;

a fourth check valve installed in the inflow path of the receiver for heating;

Further comprising a receiver discharge flow path for guiding the refrigerant from the receiver to the economizer,

The control unit, a heat pump system using the air heat of the BIPVT to control the opening and closing of the third and fourth check valves according to the operation mode.
The method according to claim 1,

a first air flow path connecting the BIPVT collector and an inlet side of the air heat exchanger;

an air fan installed in the first air flow path;

a second air flow path connecting the outlet side of the air heat exchanger and the BIPVT collector;

an air replenishment passage connected to the second air passage and additionally introducing external air;

an air replenishment passage valve for opening and closing the air replenishment passage;

an air discharge flow path connected to the second air flow path to discharge air in the second air flow path to the outside;

A heat pump system using air heat of the BIPVT further comprising an air discharge passage valve for opening and closing the air discharge passage.
The method according to claim 1,

The control unit is

During the cooling operation, when the first BIPVT heat source pump is operated, the second BIPVT heat source pump is stopped, the hot water supply pump is stopped, and the air conditioning pump is operated,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced by the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage,

The refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the outdoor heat exchanger, the expansion valve, and the air-conditioning heat exchanger in turn and then circulates to the compressor,

Heat exchange is not made in the hot water heat exchanger,

In the outdoor heat exchanger, the refrigerant and outdoor air exchange heat to condense the refrigerant,

In the heating and cooling heat exchanger, the refrigerant is evaporated, the heating and cooling heat source is cooled, and the heating and cooling heat source cools the heating and cooling water stored in the heating and cooling water tank, and the heating and cooling water is a heat pump using air heat of BIPVT used to cool the room. system.
The method according to claim 1,

the control unit,

During the summer hot water supply operation, when the first BIPVT heat source pump is operated, the second BIPVT heat source pump is stopped, the hot water supply pump is operated, and the air conditioning pump is stopped,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced by the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage to preheat the water supplied to the hot water supply tank,

The refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in order, and is then circulated to the compressor,

In the hot water supply heat exchanger, condensation heat generated while the refrigerant is condensed is transferred to the hot water supply heat source, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank,

Heat pump system using air heat of BIPVT, which does not exchange heat in the air-conditioning heat exchanger, and the outdoor heat exchanger serves as an evaporator.
The method according to claim 1,

the control unit,

During the cooling and hot water supply operation, when the first BIPVT heat source pump is operated, the second BIPVT heat source pump is stopped, and both the hot water supply pump and the heating and cooling pump are operated,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced by the air heat exchanger is stored in the buffer tank through the first BIPVT heat source supply passage to preheat the water supplied to the hot water supply tank,

The refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the outdoor heat exchanger, the expansion valve, and the air-conditioning heat exchanger in order and then circulates to the compressor,

In the hot water supply heat exchanger, condensation heat generated while the refrigerant is condensed is transferred to the hot water supply heat source, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank,

The outdoor heat exchanger serves as a condenser,

In the heating and cooling heat exchanger, the refrigerant is evaporated, the heating and cooling heat source is cooled, and the heating and cooling heat source cools the heating and cooling water stored in the heating and cooling water tank, and the heating and cooling water is a heat pump using air heat of BIPVT used to cool the room. system.
The method according to claim 1,

the control unit

When the heating operation is performed, the first and second BIPVT heat source pumps are operated, the hot water supply pump is stopped, and the air conditioning pump is operated,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced in the air heat exchanger sequentially passes through the first BIPVT heat source supply passage, the buffer tank, the second BIPVT heat source supply passage, and the outdoor heat exchanger to transfer heat to the outdoor heat exchanger,

The refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in turn, and then is circulated to the compressor,

Heat exchange is not made in the hot water heat exchanger,

Condensation heat generated in the heating and cooling heat exchanger is transferred to the heating and cooling water tank and used to heat the room,

In the outdoor heat exchanger, a heat pump system using air heat of the BIPVT that is evaporated by absorbing heat from the second BIPVT heat source supply passage.
The method according to claim 1,

the control unit

During the heating and hot water supply operation, when the first and second BIPVT heat source pumps are operated, and both the hot water supply pump and the heating and cooling pump are operated,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced in the air heat exchanger passes through the outdoor heat exchanger sequentially through the first BIPVT heat source supply passage, the buffer tank, and the second BIPVT heat source supply passage to transfer heat to the outdoor heat exchanger,

The refrigerant compressed in the compressor passes through the hot water heat exchanger, the four-way valve, the air-conditioning heat exchanger, and the expansion valve in turn, and then is circulated back to the compressor,

In the hot water supply heat exchanger, condensation heat generated while the refrigerant is condensed is transferred to the hot water supply heat source, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank,

In the air-conditioning heat exchanger, the condensed heat generated while the refrigerant is condensed is transferred to the air-conditioning water tank and used to heat the room,

In the outdoor heat exchanger, the refrigerant absorbs heat from the second BIPVT heat source supply passage and is evaporated. A heat pump system using air heat of the BIPVT.
The method according to claim 1,

the control unit,

During the winter hot water supply operation, when both the first BIPVT heat source pump and the second BIPVT heat source pump are operated, the hot water supply pump is operated, and the air conditioning pump is stopped,

The heat source of the air that has absorbed heat in the BIPVT collector is transferred to the air heat exchanger,

The hot water produced in the air heat exchanger passes through the outdoor heat exchanger sequentially through the first BIPVT heat source supply passage, the buffer tank, and the second BIPVT heat source supply passage to transfer heat to the outdoor heat exchanger,

The refrigerant compressed in the compressor passes through the hot water supply heat exchanger, the four-way valve, the air-conditioning heat exchanger, the expansion valve, and the outdoor heat exchanger in order, and is then circulated to the compressor,

In the hot water supply heat exchanger, condensation heat generated while the refrigerant is condensed is transferred to the hot water supply heat source, and the hot water supply heat source supplies heat to the hot water supply water stored in the hot water supply tank,

Heat exchange is not performed in the air-conditioning heat exchanger,

In the outdoor heat exchanger, the refrigerant absorbs heat from the second BIPVT heat source supply passage and is evaporated. A heat pump system using air heat of the BIPVT.
a compressor, a plurality of heat exchangers, an expansion valve and a four-way valve;

In a heat pump system using a heat source of air that has absorbed heat from a BIPVT (Building Integrated Photovoltaic Thermal) collector,

a hot water heat exchanger for exchanging heat with the refrigerant discharged from the compressor and a hot water heat source;

a hot water supply tank having a flow path through which the hot water supply heat source absorbing heat from the hot water supply heat exchanger passes, and storing hot water supply water supplied with heat from the hot water supply heat source;

a hot water supply pump installed in a flow path connecting the hot water supply heat exchanger and the hot water supply tank;

a heating and cooling heat exchanger for exchanging heat with the refrigerant from the hot water supply heat exchanger;

a heating and cooling water tank having an internal flow passage through which the heating and cooling heat source absorbed heat from the heating and cooling heat exchanger passes, and storing heating and cooling water exchanging heat with the heating and cooling heat source;

a heating and cooling pump installed in a flow path connecting the heating and cooling heat exchanger and the heating and cooling water tank;

an air heat exchanger for producing hot water by exchanging heat with air that has absorbed heat while passing through the BIPVT collector;

a buffer tank configured to temporarily store the hot water produced by the air heat exchanger and preheat the water supplied from the outside;

a first BIPVT heat source supply passage connecting the air heat exchanger and the buffer tank to guide hot water from the air heat exchanger to the buffer tank;

a first BIPVT heat source pump installed in the first BIPVT heat source supply passage;

a water supply preheating passage installed inside the buffer tank and configured to preheat the water supply while passing without being mixed with the hot water in the buffer tank;

a water supply storage passage connecting the water supply preheating passage and the heating and cooling water tank to guide the water preheated in the water supply preheating passage to the heating and cooling water tank;

A refrigerant passage through which the refrigerant from any one of the hot water supply heat exchanger and the air-conditioning heat exchanger passes and a hot water passage through which the hot water from the buffer tank passes are respectively formed therein, and outdoor heat exchange for exchanging the refrigerant and the hot water with each other tile;

a second BIPVT heat source supply passage connecting the buffer tank and the outdoor heat exchanger to guide the hot water from the buffer tank to pass through the outdoor heat exchanger;

a second BIPVT heat source pump installed in the second BIPVT heat source supply passage;

Operation modes including cooling operation, cooling hot water supply operation requiring both cooling and hot water supply, heating operation, heating hot water supply operation requiring both heating and hot water supply, summer hot water supply operation requiring only hot water supply, and winter hot water supply operation, internal temperature of the hot water supply tank, the above A control unit for controlling the operation of the hot water supply pump, the air conditioning pump, and the first and second BIPVT heat source pumps according to the internal temperature of the heating and cooling water tank,

The compressor is controlled by an inverter,

and a cooling plate heat exchanger connected to the suction side flow path of the compressor and provided in the heating part of the inverter to exchange heat with the refrigerant before being sucked into the compressor to cool the heating part of the inverter and evaporate the refrigerant,

The cooling plate heat exchanger includes a cooling plate formed in a plate shape so as to be in contact with the heating part of the inverter and having a plurality of through-holes formed therein, fitted into the through-holes to penetrate the cooling plate, and sucked into the compressor. Including a plurality of refrigerant tubes through which the refrigerant before becoming

The cooling plate includes a first cooling plate having a first semicircular groove formed on one side of the cooling plate in contact with the heat generating unit and having a first semicircular groove on the other side to fit the refrigerant pipe, and is coupled to the other side of the first cooling plate, A second cooling plate having a semicircular second groove portion opposite to the first groove portion is formed;

a cooling plate heat exchanger suction flow path branched from the suction side flow path of the compressor and guiding the refrigerant before being sucked into the compressor to the cooling plate heat exchanger;

a cooling plate heat exchanger discharge flow path for guiding the refrigerant discharged from the cooling plate heat exchanger to a suction side flow path of the compressor;

a first opening/closing valve installed between a point where the cooling plate heat exchanger suction flow path is branched from the suction side flow path of the compressor and a point where the cooling plate heat exchanger discharge flow path is merged;

Further comprising a second on-off valve for opening and closing the cooling plate heat exchanger discharge flow path,

The control unit is

When the temperature of the heating part of the inverter is equal to or higher than the first preset heating part temperature, the second on-off valve is opened in the state in which the first on-off valve is opened,

When the temperature of the heating part of the inverter is less than the second preset heating part temperature, the second on-off valve is shielded. A heat pump system using air heat of the BIPVT.