KR101507437B1 - Heat pump heating apparatus - Google Patents

Abstract

A heat pump water heater according to the present invention comprises a heat pump circuit including a compressor, a water refrigerant heat exchanger, an expansion mechanism, and an evaporator; A water circulation circuit for circulating the water heat exchanged with the refrigerant in the water refrigerant heat exchanger between the hot water pipe and the water refrigerant heat exchanger; An indoor unit having an indoor heat exchanger connected to the heat pump circuit so that the refrigerant compressed by the compressor can pass through; And a refrigerant regulating mechanism for regulating the refrigerant compressed in the compressor so that the refrigerant compressed in the compressor passes through both the indoor heat exchanger and the water-refrigerant heat exchanger or passes through the water-refrigerant heat exchanger alone, The heating performance of the room can be maximized and the refrigerant compressed by the compressor can be concentrated on the hot water only through the indoor heat exchanger of the indoor unit, There is an effect that can be.

Heat pump water heater, heat pump circuit, water refrigerant heat exchanger, hot water piping, water circulation circuit, indoor unit, indoor heat exchanger,

Description

[0001] Heat pump heating apparatus [0002]

The present invention relates to a heat pump water heater having a water circulation circuit for transferring heat of a heat pump circuit and a heat pump circuit to a hot water piping and a control method thereof, and more particularly to an indoor heat exchanger for heating a room, The present invention relates to a heat pump water heater and a control method thereof.

Generally, a heat pump water heater uses heat of a heat pump circuit composed of a compressor, a condenser, an expansion mechanism and an evaporator, and the like, and the condenser is composed of a water-refrigerant heat exchanger for heating water while condensing gas refrigerant of high temperature and high pressure .

In the heat pump water heater, the water refrigerant heat exchanger and the hot water pipe are connected to each other by a water circulation pipe, and a pump for circulating water is installed in the water circulation pipe. When water is circulated through the hot water pipe and the water- And the heat transferred to the hot water supply pipe is used for hot water supply such as floor heating in the room.

It is an object of the present invention to provide a heat pump water heater capable of heating indoor air together with hot water such as indoor floor heating by heat of a heat pump circuit.

Another object of the present invention is to provide a heat pump water heater capable of regulating the heat of a heat pump circuit with a simple structure.

Another object of the present invention is to provide a control method of a heat pump water heater in which the heat of a heat pump circuit can be optimally adapted to a demand of a user or the like.

According to an aspect of the present invention, there is provided a heat pump water heater comprising: a heat pump circuit including a compressor, a water refrigerant heat exchanger, an expansion mechanism, and an evaporator; A water circulation circuit for circulating the water heat exchanged with the refrigerant in the water refrigerant heat exchanger between the hot water pipe and the water refrigerant heat exchanger; And an indoor unit having an indoor heat exchanger connected to the heat pump circuit so that the refrigerant compressed by the compressor can pass through.

The heat pump water heater may further include a refrigerant adjusting mechanism that adjusts the refrigerant compressed in the compressor so that the refrigerant compressed in the compressor passes through the indoor heat exchanger and the water-refrigerant heat exchanger, or passes through the water-refrigerant heat exchanger alone.

The heat pump water heater includes a plurality of indoor units, and a plurality of the indoor heat exchangers are connected in parallel.

The indoor unit includes an indoor control valve for controlling the refrigerant flowing into the indoor heat exchanger and a check valve for blocking the refrigerant flowing back to the indoor heat exchanger from the heat pump circuit.

The heat pump water heater includes a plurality of indoor units, and a plurality of the indoor heat exchangers are connected in series.

The indoor unit and the hot water piping are installed to heat different rooms.

The indoor unit includes an indoor fan that sucks indoor air into the indoor unit to cause heat exchange with the indoor heat exchanger, and then discharges the indoor air to the outside of the indoor unit.

The refrigerant adjusting mechanism includes a three-way valve installed between the compressor and the water-refrigerant heat exchanger.

The heat pump water heater includes a compressor-three-way valve connecting pipe connecting the compressor and the three-way valve, a three-way valve-water refrigerant heat exchanger connecting pipe connecting the three-way valve and the water-refrigerant heat exchanger, An indoor heat exchanger inlet pipe connecting the heat exchanger and an indoor heat exchanger outlet pipe connecting the indoor heat exchanger and the three-way valve-water refrigerant heat exchanger connecting pipe.

And a control unit for controlling the compressor, the water circulation circuit, the three-way valve, and the indoor unit according to the adjustment of the operation control unit.

A heat pump water heater according to the present invention comprises a heat pump circuit including a compressor, a water refrigerant heat exchanger, an expansion mechanism, and an evaporator; A water circulation circuit for circulating the water heat exchanged with the refrigerant in the water refrigerant heat exchanger between the hot water pipe and the water refrigerant heat exchanger; And an indoor unit having an indoor heat exchanger connected to one of the heat pump circuit and the water circulation circuit.

A control method of a heat pump water heater according to the present invention includes: an operation input step of inputting an operation mode of a heat pump water heater; The refrigerant compressed by the compressor of the heat pump circuit is supplied to the indoor heat exchanger of the indoor unit and the water refrigerant heat exchanger of the heat pump circuit when the input of the operation input step is the simultaneous hot water supply and air conditioning mode, The refrigerant compressed by the compressor of the heat pump circuit is not supplied to the indoor heat exchanger of the indoor unit but is supplied to the water refrigerant heat exchanger of the heat pump circuit when the input of the operation input step is the water supply single mode, And a refrigerant adjusting step of controlling the refrigerant adjusting mechanism in a single supply mode of the water-refrigerant heat exchanger.

In the heat pump water heater according to the present invention configured as described above, the refrigerant compressed in the compressor of the heat pump circuit passes through both the indoor heat exchanger and the water-refrigerant heat exchanger of the indoor unit, The floor heating and the air conditioning heating can be performed simultaneously with the circuit, and the heating performance of the room is maximized.

The heat pump water heater according to the present invention has an advantage that the refrigerant compressed in the compressor of the heat pump circuit can pass through only the indoor heat exchanger of the indoor unit and concentrate on the hot water supply,

The heat pump water heater according to the present invention includes a plurality of indoor units, and a plurality of indoor heat exchangers are connected in parallel so that a plurality of indoor units can simultaneously perform a heating function.

The heat pump water heater according to the present invention includes an indoor control valve for controlling the refrigerant flowing through the indoor heat exchanger to the indoor unit and a check valve for shutting off the refrigerant flowing back to the indoor heat exchanger from the heat pump circuit, There is an advantage to be able to control.

The heat pump water heater according to the present invention includes a plurality of indoor units and a plurality of indoor heat exchangers are connected in series to perform the heating function of the highest temperature among the plurality of indoor heat exchangers through which water first passes, The indoor heat exchanger in which water is passed most later among the four indoor heat exchangers performs the function of heating the lowest temperature relatively. Therefore, there is an advantage that it can best cope with the heating preferences of various users in the building.

In the heat pump water heater according to the present invention, the indoor unit and the hot water supply pipe are installed to heat different rooms, and there is an advantage that a plurality of rooms can be simultaneously heated by different types of heating by one heat pump circuit.

 The heat pump water heater according to the present invention comprises a three-way valve provided between the compressor and the water-refrigerant heat exchanger for controlling the refrigerant compressed in the compressor, so that the floor heating and the air-conditioning can be controlled only by controlling the three- There is an advantage.

The heat pump water heater according to the present invention includes a compressor-three-way valve connecting pipe, a three-way valve-water refrigerant heat exchanger connecting pipe, an indoor heat exchanger inlet pipe and an indoor heat exchanger outlet pipe, There is an advantage in that the function can be performed.

 The heat pump water heater according to the present invention controls the compressor, the water circulation circuit, the three-way valve and the indoor unit according to the adjustment of the operation control unit, and one control unit controls both the flow of the refrigerant, There is an advantage.

A control method for a heat pump water heater according to the present invention is a control method for a heat pump water heater in which a refrigerant adjusting mechanism supplies refrigerant to an indoor heat exchanger of an indoor unit and a water refrigerant heat exchanger of a heat pump circuit, The refrigerant can be easily supplied to the water-refrigerant heat exchanger of the heat pump circuit without supplying the refrigerant, so that the refrigerant can be easily controlled and the heating type of the heat consumer can be easily changed.

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

FIG. 1 is a schematic configuration view of a heat pump hot water heater according to the present invention in the case of hot water supply and air conditioning heating in an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a hot water hot water heater according to an embodiment of the present invention, And a detailed configuration of the hot water supply unit shown in Fig.

1 to 3, the heat pump water heater according to the present embodiment includes a heat pump circuit 2 and a water circulation circuit 3 for transferring the heat generated in the heat pump circuit 2 to a heat consumer such as a floater (4).

The heat pump circuit 2 includes a compressor 6, a water-refrigerant heat exchanger 20, an expansion mechanism 30, and an evaporator 40.

The compressor (6) compresses the gaseous refrigerant at a low temperature and a low pressure into gaseous refrigerant at a high temperature and a high pressure, and is composed of a variable capacity compressor capable of varying the compression capacity in accordance with a hot water supply load and a heating load.

The compressor 6 may be constituted by a single inverter compressor whose compression capacity is variable according to the input frequency, or may be constituted by a combination of a plurality of constant speed compressors having a constant compression capacity, and a combination of an inverter compressor and a constant speed compressor As shown in FIG.

The water-refrigerant heat exchanger 20 is an air to water heat exchanger in which the gaseous refrigerant of high temperature and high pressure compressed by the compressor 6 and the water of the water circulation circuit 4 are heat-exchanged. The condensing duct 22, And a part of the water circulation circuit 4 is formed so as to be heat-exchanged with the condensing flow passage 22.

The water refrigerant heat exchanger 20 is connected to the compressor 6 side by the refrigerant pipe 23 and by the expansion mechanism 30 and the refrigerant pipe 24 by the condensing duct 22.

The expansion mechanism 30 is a kind of variable expansion mechanism for expanding or interrupting the refrigerant passing between the condensing flow path 22 of the water-refrigerant heat exchanger 20 and the evaporator 40. The expansion mechanism 30 is a variable expansion mechanism in which the opening value is varied And an electronic expansion valve such as LEV.

The evaporator 40 is connected to the expansion mechanism 30 and the refrigerant pipe 41 so that the refrigerant expanded while passing through the expansion mechanism 30 is evaporated while absorbing the surrounding heat. (42).

The evaporator 40 may be constituted by a heat exchanger in which the refrigerant is heat-exchanged with a fluid such as water or a heat exchanger in which the refrigerant is heat-exchanged with the outside air.

When the refrigerant is heat-exchanged with a fluid such as water, the evaporator 40 has a complicated structure and requires a separate water supply mechanism for supplying water or the like to the evaporator 40. On the other hand, An outdoor fan for blowing outdoor air to the evaporator 40 is required and an outdoor fan 46 for blowing outdoor air to the evaporator 40 is provided.

1 to 3, the water circulation circuit 4 is provided for heating a heat demanding place such as a floor or the like by water heat-exchanged with a refrigerant in the water refrigerant heat exchanger 20, A water heating passage 70 formed in the water refrigerant heat exchanger 20 and a hot water pipe-water refrigerant heat exchanger connecting pipe 80 connecting the hot water pipe 60 and the water heating channel 70 do.

The hot water piping 60 is a kind of heat transfer part or heat exchanging part for transferring heat transferred from the heat pump circuit 2 to a heat demanding place such as a floorer or the like and is installed in a hot water tank containing water used for hot water supply, Or a heating pipe embedded in a floor of the room, and the like, and is hereinafter referred to as a heating pipe installed in a floor.

The water heating passage 70 is a kind of water passage through which the heat of the water-refrigerant heat exchanger 20 is transmitted while passing water, and is formed to be a cross flow with the condensing passage 22.

The hot water pipe-water refrigerant heat exchanger connecting pipe 80 is connected to the water refrigerant heat exchanger inlet pipe 82 between the inlet of the water heating channel 70 and the outlet of the hot water pipe 60, And a water refrigerant heat exchanger outlet pipe (84) between the inlet of the hot water pipe (60).

The water circulation circuit 4 is configured such that the water of the water heating passage 70 formed in the water refrigerant heat exchanger 20 flows into the water refrigerant heat exchanger outlet pipe 84, the hot water supply pipe 60, the water refrigerant heat exchanger inlet pipe 82) in order to pump water to be circulated to the water heating channel (70) of the water-refrigerant heat exchanger (20).

The pump 90 is installed in one of the water-refrigerant heat exchanger inlet pipe 82 and the water-refrigerant heat exchanger outlet pipe 84 and is hereinafter referred to as the water-refrigerant heat exchanger outlet pipe 84.

The heat pump water heater according to the present embodiment can be configured as one heat pump hot water supply unit by installing the components other than the hot water supply pipe 60 in one chassis, H: Hydro kit), and it will be described that it includes an outdoor unit (O: Out door unit) and a hot water supply unit (H: Hydro kit).

Here, the outdoor unit (O) is installed outdoors and the hot water supply unit (H) is installed indoors.

The compressor 6, the inflator 30 and the evaporator 40 of the heat pump circuit 2 except for the water refrigerant heat exchanger 20 are connected to the evaporator 40 while the driving noise of the compressor 6 is not transmitted to the room, The outdoor unit O is installed in the outdoor unit O so as to blow out the outdoor air.

Since the water-refrigerant heat exchanger 20 of the heat pump circuit 2 is provided with the water heating flow passage 22 through which the water passes, it is preferable to install the water-heating unit 22 in the room, ).

The heat pump circuit 2 includes a refrigerant pipe 23 provided in the hot water supply unit H for connecting the water refrigerant heat exchanger 20 to the water refrigerant heat exchanger 20 and the compressor 6 side, The refrigerant pipe 24 connecting the unit 20 and the expansion mechanism 30 is arranged to pass through the hot water supply unit H and the outdoor unit O. [

That is, the outdoor unit O includes an outdoor chassis having an air inlet and an air outlet for discharging the outdoor air after the outdoor air is sucked, a compressor 6 installed inside the outdoor chassis, an expansion mechanism 30, an evaporator 40, .

 The water circulation circuit 20 is constructed such that the hot water piping 60 is buried in a heat demand place such as a floater where the heat demanding place is located and the pump 90 and the like other than the hot water piping 60 are installed together with the water- Is installed in the unit (H).

Here, the hot water supply unit H may be installed in a room to be heated, or may be installed in a multi-purpose room, a veranda, a basement, or the like other than a room for heating.

The water circulation circuit 4 is embedded in a heat demanding place such as the floor of the room where the hot water supply pipe 60 is to be heated and is connected to an outlet of the hot water supply pipe 60 and a water heating oil passage 22 ) Inlet pipe is connected between the hot water supply unit (H) and the hot water supply pipe (60) through the hot water supply unit (H), the water refrigerant heat exchanger outlet pipe (84) Is disposed between the hot water supply unit (H) and the hot water supply pipe (60) through the unit (H).

Meanwhile, the heat pump water heater according to the present embodiment further includes an indoor unit 100 for directly heating and heating the room by the heat of the heat pump water heater.

The indoor unit 100 can be connected to the heat pump circuit 2 to directly use the heat generated by the heat pump circuit 2 for air conditioning and cooling of the room. The indoor unit 100 is connected to the water circulation circuit 4, It is also possible to make the heat transferred to the heat pump circuit 4 used for the air conditioning cooling of the room and to be connected to the heat pump circuit 2 as follows.

The indoor unit (100) has an indoor heat exchanger (102) connected to the heat pump circuit (2) so that the refrigerant compressed in the compressor (6) can pass through it.

The indoor unit 100 may be installed so as to heat different rooms from the hot water piping 60 connected to the heat pump circuit 2 and may be installed in the same room as the hot water piping 60 connected to the heat pump circuit 2 It is also possible to be installed for heating.

When the hot water piping 60 is installed in the entire room such as a bedroom or a living room or a kitchen in a building or a house and the indoor unit 100 is installed in all or a part of the room as described above, (Main living space) such as a bedroom or a living room in a house, and the indoor unit 100 can be installed in a kitchen or the like When installed in the second room (auxiliary living space), it is also possible that the heat pump water heater is used to heat the first indoor space by the hot water piping 60, and the second indoor space can be heated by the indoor unit 100, It goes without saying that it is also possible to heat the room variously by various combinations of the hot water supply piping 60 and the indoor unit 100.

The indoor unit 100 includes a chassis 104 having an air inlet and an air outlet formed therein so that indoor air can be discharged after being sucked and an indoor heat exchanger 102 built therein, And an indoor fan 106 installed inside the chassis 104 to discharge heat to the outside of the indoor unit after heat exchange with the indoor unit 102.

It will be described that at least one indoor unit 100 is provided and a plurality of indoor units 100 are connected to the heat pump circuit 2 so as to intensively heat one room or to heat a plurality of rooms respectively.

That is, a plurality of indoor heat exchangers 102 are connected to the heat pump circuit 2, and refrigerant pipes of the indoor heat exchangers 102 are connected in parallel or in series.

When a plurality of indoor heat exchangers 102 are connected in parallel, a plurality of indoor units 100, 100 ', 100 " can simultaneously perform a heating function, while a plurality of indoor heat exchangers 102 are connected in series The indoor heat exchanger 102 in which the water first passes among the plurality of indoor heat exchangers 102 performs the heating function of the highest temperature and the water in the plurality of indoor heat exchangers 102 Since the indoor heat exchanger 102 performs the heating function of the lowest temperature, the indoor heat exchanger 102 can optimally respond to the heating preferences of the users in the building and the external conditions (for example, the distance to the outdoor).

A plurality of indoor units 100, 100 'and 100' 'include a room control valve 108 for controlling the refrigerant flowing into the indoor heat exchanger 102 and a room control valve 108 for controlling the indoor heat exchanger 102, And a check valve (110) for blocking the refrigerant flowing back into the refrigerant circuit.

  On the other hand, the heat pump water heater is configured such that the refrigerant compressed in the compressor 6 passes through both the indoor heat exchanger 102 and the water-refrigerant heat exchanger 20, passes through the water-refrigerant heat exchanger 20 alone, or passes through the indoor heat exchanger 102 And a refrigerant regulating mechanism for regulating the refrigerant compressed in the compressor so as to pass alone.

The refrigerant adjusting mechanism may have a simultaneous mode of floor heating and air conditioning heating, a floor heating single mode, and an air conditioning heating single mode, and hereinafter, the simultaneous mode of floor heating and air conditioning heating and the floor heating single mode are explained.

That is, the refrigerant adjusting mechanism is a mode in which the refrigerant compressed in the compressor 6 is simultaneously passed through both the indoor heat exchanger 102 and the water-refrigerant heat exchanger 20, and the indoor heat exchanger 102 So as to pass through only the water-refrigerant heat exchanger (20) without passing through the water-refrigerant heat exchanger (20).

The refrigerant circuit of the hot water piping 60 and the refrigerant circuit of the indoor heat exchanger 102 are connected in parallel so that the floor heating and the air conditioning heating can be independently performed. The refrigerant circuit of the indoor heat exchanger 102 and the refrigerant circuit of the indoor heat exchanger 102 are connected in series so that one of the floor heating and the air conditioning heating is performed first and then the other heating is performed later. 102, and then flows through the water-refrigerant heat exchanger (20) to perform floor heating after the refrigerant first performs air-conditioning heating, and the refrigerant flows into the indoor heat exchanger (102) And only the floor heating is performed so that the refrigerant passes through only the water-refrigerant heat exchanger 20 so that the refrigerant is subjected to floor heating only.

The refrigerant adjusting mechanism includes a three-way valve 120 installed in the refrigerant pipe 23 between the compressor 6 and the water-refrigerant heat exchanger 20.

The refrigerant pipe 23 between the compressor 6 and the water refrigerant heat exchanger 20 is connected to a compressor-three-way valve connecting pipe 23a for connecting the compressor 6 and the three-way valve 120, And a three-way valve-water refrigerant heat exchanger connecting pipe (23b) connecting the water refrigerant heat exchanger (20).

The heat pump water heater includes an indoor heat exchanger inlet pipe 122 for connecting the three-way valve 120 and the indoor heat exchanger 20, an indoor heat exchanger 102 and a three-way valve-water refrigerant heat exchanger connecting pipe 23b, And an indoor heat exchanger outlet pipe (124) connecting the outdoor heat exchanger outlet pipe

4 is a control block diagram of the heat pump water heater shown in Fig.

The heat pump water heater according to the present embodiment includes a driving control unit 130 for inputting inputs such as on / off of a heat pump water heater, a mode for simultaneous heating of floor heating and air conditioning, and a driving mode such as floor heating single mode, And controls the heat pump circuit 2, the water circulation circuit 4, the indoor units 100, 100 ', 100 "and the three-way valve 120 according to the control of the operation control unit 130, And a control unit 140.

5 is a flowchart showing an embodiment of a method of controlling a heat pump water heater according to the present invention.

First, when a user inputs an operation command of the heat pump water heater through the operation control unit 130 and inputs an operation mode, the control unit 140 controls the input of the operation control unit 130 (S1)

The control unit 140 controls the heat pump water heater according to the input of the operation control unit 130. In particular, the control unit 140 controls the three-way valve 120, which is a refrigerant regulator, according to the mode input through the operation control unit 130. [ .

Hereinafter, the control of the heat pump water heater by the control unit 140 will be described in detail.

The control unit 140 drives the compressor 6 and the expansion mechanism 30 and rotates the outdoor fan 46 when the operation command is input and the input operation mode is the simultaneous hot water supply and air conditioning mode, And the indoor fan 106 of the indoor unit to which the operation command is inputted among the indoor units 100, 100 'and 100 "is rotated and the refrigerant control valve 108 is opened and the compressor 6 Is connected to the indoor heat exchanger 102 of the indoor unit 100, 100 ', 100' ', and the water-refrigerant heat exchanger 20 of the heat pump circuit 2, (S1), (S2), (S3), and

In the above control, the compressor 6 compresses the low-temperature low-pressure gas refrigerant into the high-temperature high-pressure gas refrigerant, and the high-temperature high-pressure gas refrigerant discharged from the compressor 6 is supplied to the indoor heat exchanger (102). That is, the refrigerant discharged from the compressor 6 and passed through the compressor-three-way valve connecting pipe 23a is guided to the indoor heat exchanger inlet pipe 122 through the three-way valve 120, And is condensed while being drawn into room air blown to the indoor heat exchanger 102 by the indoor fan 106. [

The condensed refrigerant passes through the indoor heat exchanger outlet pipe 124 and then flows into the condensing duct 22 of the water-refrigerant heat exchanger 20. The refrigerant passes through the water-refrigerant heat exchanger 20, The heat is absorbed by the water pumped into the water-refrigerant heat exchanger 20 and condensed again.

The condensed refrigerant is then expanded while passing through the expansion mechanism 30 and then evaporated while taking the heat of the outdoor air blown by the outdoor fan 46 while passing through the evaporator 40 and is circulated to the compressor 6 do.

 When the indoor fan 106 rotates, the indoor units 100, 100 ', 100' 'suck the indoor air into the indoor unit, heat-exchange the indoor air with the indoor heat exchanger 102, The air discharged from the indoor units 100, 100 ', and 100 "

On the other hand, when the pump 90 is driven, the water circulation circuit 4 pumps the water in the hot water pipe 60 by the pump 90 and passes through the water refrigerant heat exchanger water inlet pipe 82, Is heated while being drawn from the refrigerant while passing through the water heating passage 70 and is then circulated to the hot water supply pipe 60 through the pump 90 , And the circulation hot water supply pipe (60) as described above causes the floor of the room to be heated.

The control unit 140 drives the compressor 6 and the expansion mechanism 30 and rotates the outdoor fan 46 and the pump 90 And the refrigerant compressed in the compressor 6 is supplied to the indoor heat exchanger 102 (100 '') of the indoor units 100, 100 'and 100' ', Way valve 120, which is a refrigerant regulator, is controlled so as to pass through the water-refrigerant heat exchanger 20 of the heat pump circuit 2 without passing through the water-refrigerant heat- )

In the above-described control, the compressor 6 compresses the low-temperature low-pressure gas refrigerant into the high-temperature high-pressure gas refrigerant, and the high-temperature and high-pressure gas refrigerant discharged from the compressor 6 is passed through the three- (20). That is, the refrigerant discharged from the compressor 6 and passed through the compressor-three-way valve connecting pipe 23a is directly guided to the three-way valve-water refrigerant heat exchanger connecting pipe 23b through the three-way valve 120, Refrigerant heat exchanger 20 and is condensed while being sucked by the water pumped into the water-refrigerant heat exchanger 20 by the pump 90 while passing through the water-refrigerant heat exchanger 20.

The condensed refrigerant is then expanded while passing through the expansion mechanism 30 and then evaporated while taking the heat of the outdoor air blown by the outdoor fan 46 while passing through the evaporator 40 and is circulated to the compressor 6 do.

The water circulation circuit 4 pumps water in the hot water supply pipe 60 by the pump 90 and passes through the water refrigerant heat exchanger water inlet pipe 82 when the pump 90 is driven and then flows into the water refrigerant heat exchanger The water is heated while being drawn from the refrigerant while passing through the water heating passage 70 and then is circulated to the hot water supply pipe 60 through the pump 90, The circulation of the hot water supply pipe 60 causes the floor of the room to be heated.

The present invention is not limited to the above embodiments and can be applied to the case where the refrigerant piping of the refrigerant of the heat pump circuit 2 flowing into and out of the indoor units 100, 100 ', 100 " 100 '' and 100 '' may be connected between the water circulation circuit 4 and the water refrigerant heat exchanger 20 before or after the condensing flow channel of the water refrigerant heat exchanger 20, The water in the water circulation circuit 4 flows into / out of the indoor units 100, 100 ', 100' 'and the water in the indoor heat exchanger 102 of the indoor units 100, 100' The water heat exchanger 102 is heated while passing through the water circulation circuit 4 so that water is passed through both the hot water pipe 60 and the indoor heat exchanger 12 or the hot water pipe 60 It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a heat pump hot water heater according to the present invention,

FIG. 2 is a schematic configuration diagram of a hot-water tank water heater according to an embodiment of the present invention,

3 is a detailed configuration diagram of the hot water supply unit shown in Figs. 1 and 2. Fig.

FIG. 4 is a control block diagram of the heat pump water heater shown in FIG. 1;

5 is a flowchart showing an embodiment of a method of controlling a heat pump water heater according to the present invention.

DESCRIPTION OF THE EMBODIMENTS

2: Body 4: Water circulation circuit

6: compressor 20: water-refrigerant heat exchanger

22: condensing duct 23: refrigerant pipe

23a: Compressor - Three-way valve connection piping

23b: Three-way valve - Water refrigerant heat exchanger connection piping

30: Expansion mechanism 40: Evaporator

60: Hot water piping 70: Water heating channel

82: Water refrigerant heat exchanger inlet piping 84: Water refrigerant heat exchanger outlet piping

90: Pump 100, 100 ', 100 ": indoor unit

102: indoor heat exchanger 104: indoor fan

108: Indoor control valve 110: Check valve

120: Three-way valve 122: Indoor heat exchanger inlet piping

124: Indoor heat exchanger outlet pipe 130: Temperature control unit

140:

Claims (12)

delete delete delete delete delete delete delete delete A heat pump circuit including a compressor, a water refrigerant heat exchanger, an expansion mechanism, and an evaporator; A water circulation circuit for circulating the water heat exchanged with the refrigerant in the water refrigerant heat exchanger between the hot water pipe and the water refrigerant heat exchanger; And an indoor unit having an indoor heat exchanger connected to the heat pump circuit so that the refrigerant compressed by the compressor can pass therethrough,  Further comprising a refrigerant adjusting mechanism for adjusting the refrigerant compressed in the compressor so that the refrigerant compressed in the compressor passes through the indoor heat exchanger and the water-refrigerant heat exchanger, or passes through the water-refrigerant heat exchanger, Wherein the refrigerant adjusting mechanism includes a three-way valve installed between the compressor and the water-refrigerant heat exchanger, A compressor-three-way valve connecting pipe connecting the compressor and the three-way valve, a three-way valve-water refrigerant heat exchanger connecting pipe connecting the three-way valve and the water-refrigerant heat exchanger, and an indoor heat exchanger connecting the three-way valve and the indoor heat exchanger Further comprising an indoor heat exchanger outlet piping connecting the heat exchanger inlet pipe and the indoor heat exchanger and the three-way valve-water refrigerant heat exchanger connecting pipe. 10. The method of claim 9, A drive controller for inputting an operation mode of the heat pump water heater, Further comprising a control unit for controlling the heat pump circuit, the water circulation circuit, the indoor unit, and the refrigerant adjustment unit according to the adjustment of the operation control unit. delete  11. The method of claim 10, The control unit Wherein the controller controls the refrigerant adjusting mechanism in a simultaneous supply mode in which the refrigerant compressed in the compressor is supplied to the indoor heat exchanger and the water-refrigerant heat exchanger when the operation mode input to the operation control unit is the hot water supply and air conditioning simultaneous mode, Wherein the refrigerant regulating mechanism is controlled in a single supply mode in which the refrigerant compressed in the compressor is not supplied to the indoor heat exchanger but is supplied to the water refrigerant heat exchanger when the operation mode input to the operation control unit is the single hot water supply mode, Heat pump water heater.

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