KR101627659B1 - Hybrid heat pump boiler system - Google Patents

Abstract

The objective of the present invention is to provide a hybrid heat pump boiler system capable of suppressing dew condensation of an outdoor unit by preventing a temperature decrease of a coolant collected to a compressor, and at the same time capable of improving performance of a heat pump by stimulating vaporization of the coolant. To realize this, the hybrid heat pump boiler system of the present invention comprises: the outdoor unit (100) and an indoor unit (200) constituting the heat pump; a heat accumulation part (300) to collect and accumulate heat of condensation of the coolant circulating in the heat pump; and a boiler (400) to heat heating water and hot water using heat accumulated in the heat accumulation part (300) and combustion heat of a burner. The outdoor unit (100) includes a compressor (110), a four-way valve (120), a receive tank (140), an expansion valve (150), an outdoor heat exchanger (170), and an accumulator (180). The indoor unit (200) includes an indoor heat exchanger (210) and an expansion valve (220). The heat accumulation part (300) includes a heat accumulation heat exchanger (310) and a tank (320). The boiler (400) includes a first heat exchanger (410) to heat the heating water absorbing heat via the water tank (320) by combustion of the burner, and a second heat exchanger (420) to exchange heat of the heating water and the hot water passing through the first heat exchanger (410). The outdoor unit (100) comprises a coolant heat delivery part (130) which delivers heat of the coolant discharged from the compressor (110) to the coolant collected to the compressor (110).

Description

[0001] The present invention relates to a hybrid heat pump boiler system,

The present invention relates to a hybrid heat pump boiler system, and more particularly, to a hybrid heat pump boiler system capable of selectively or simultaneously performing heating and hot water operation using heating or cooling using a heat pump and refrigerant condensation heat of a heat pump as a heat source To a boiler system.

Generally, the heat pump system is a system in which a cooling cycle and a heating cycle are built in one system, cooling is performed in a cooling cycle in the summer, and heating is performed in a heating cycle in the opposite direction to the cooling cycle in the winter.

Further, the heat pump cooling / heating system can perform cooling and heating at the same time by switching the low temperature to the high temperature or switching the high temperature to the low temperature through the bidirectional flow of the refrigerant.

In recent years, a hybrid heat pump system has been developed in which a heat pump cooling and heating system and a boiler are connected to each other so that the heat of condensation of the refrigerant circulating through the heat pump and the heat of combustion by burning the burner in the boiler are used together as a heat source for heating and cooling.

As a prior art related to such a heat pump system, Korean Patent Registration No. 10-0877055 discloses a heat pump system which is installed in an indoor unit and connected to a refrigerant circulation portion where refrigerant gas discharged from a compressor circulates and is condensed, And a hot water coolant control valve provided in the coolant circulation unit and adapted to directly supply the coolant gas to the dual pipe heat exchanger without passing through the indoor heat exchanger in the hot water supply mode to selectively perform cooling, heating and hot water supply, , A hybrid heat pump system in which cooling and hot water supply, and heating and hot water supply can be simultaneously performed.

As another prior art, Korean Patent Laid-Open Publication No. 10-2015-0035012 discloses a method of connecting a cascade heat exchanger between a first cycle and a second cycle having a compressor, a four-way valve, a heat exchanger and an expansion mechanism, There is disclosed a regenerative heat pump boiler system configured to transfer condensation heat of a refrigerant to a heat medium to be utilized as an auxiliary heat source of the heat medium in a heat exchanger and to provide a four-way valve in a heat pump to perform defrost operation.

However, in the above-mentioned related arts, when the temperature of the refrigerant recovered by the compressor is low in an environment in which the temperature is significantly low in the winter season, the structure for effectively suppressing the phase phenomenon in which the outdoor air is frozen is insufficient, And the defrost cycle in which the cycle of the refrigerant is switched in the opposite direction is repeatedly performed in order to control the temperature, so that the heat pump can not be continuously operated in a desired operation mode.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a hybrid air conditioner capable of preventing a temperature drop of a refrigerant returned to a compressor, And a heat pump boiler system.

It is another object of the present invention to provide a hybrid heat pump boiler system that can reduce the combustion load of a boiler and reduce energy by utilizing the heat of condensation of the refrigerant as a heat source of heating water and hot water.

The hybrid heat pump boiler system according to the present invention for realizing the above-mentioned object includes an outdoor unit 100 and an indoor unit 200 constituting a heat pump, a heat storage unit 200 for recovering condensation heat of the refrigerant circulating through the heat pump, And a boiler (400) for heating the heating water and the hot water using the heat accumulated in the heat storage unit (300) as an auxiliary heat source, the outdoor unit (100) A four-way valve (120) for switching a flow path of a refrigerant discharged from the compressor (110) in accordance with an operation mode of the hard pump, and a receiver (120) for storing a refrigerant circulating through the heat pump A tank 140 and an expansion valve 150 for expanding the refrigerant discharged from the receiving tank 140. The refrigerant is supplied to the four-way valve 120 or the refrigerant passing through the four- Outdoor heat exchanger 170 is heat exchanger, and an accumulator 180 for separating liquid refrigerant from the refrigerant is recovered to the compressor (110); The indoor unit 200 includes an indoor heat exchanger 210 that is supplied to the receiving tank 140 or through which the refrigerant passes through the four-way valve 120 and exchanges heat with indoor air, Or an expansion valve (220) in which the refrigerant supplied to the indoor heat exchanger (210) is thermally expanded; The heat storage unit 300 includes a regenerative heat exchanger 310 through which refrigerant passes through the four-way valve 120 and is heat-exchanged with the heating water, and a heating water heat exchanger 310 through which the heat is transferred via the regenerative heat exchanger 310 And a water tank (320) in which hot water is stored; The boiler 400 includes a first heat exchanger 410 that heats the heated water that has absorbed heat through the water tank 320 by the burning of the burner and a second heat exchanger 410 that passes through the first heat exchanger 410 And a second heat exchanger (420) in which heating water and hot water are heat-exchanged; The outdoor unit 100 is provided with a refrigerant heat transfer unit 130 for transferring the heat of the refrigerant discharged from the compressor 110 to the refrigerant recovered by the compressor 110.

The refrigerant heat transfer part 130 includes a refrigerant supply pipe that passes through the four-way valve 120 and is directed to the heat storage heat exchanger 310, and a refrigerant flow path that passes through the four- And a refrigerant heat exchanger 130-1 in which heat exchange is carried out by incorporating a recovery pipe of the refrigerant heat exchanger 130-1.

A branch pipe for bypassing the refrigerant discharged from the compressor 110 to the outlet side of the refrigerant heat exchanger 130-1 without passing through the refrigerant heat exchanger 130-1 is connected to the supply pipe, The branch pipe may be provided with a valve for opening and closing the flow passage.

The refrigerant heat transfer part 130 is connected to the accumulator 180 by being branched from a refrigerant supply pipe that passes through the four-way valve 120 and flows toward the heat storage heat exchanger 310, And a refrigerant heat exchanger 130-2 through which the refrigerant return pipe passing through the four-way valve 120 and directed to the compressor 110 is installed to perform heat exchange.

The refrigerant heat transfer part 130 is branched from a refrigerant supply pipe which passes through the four-way valve 120 and is directed to the heat storage heat exchanger 310, passes through the four-way valve 120, A refrigerant tube 130a connected to the refrigerant recovery pipe and a flow rate control valve 130b for controlling the flow rate of the refrigerant passing through the refrigerant tube 130a.

A thermometer T1 and a pressure gauge P1 for measuring the temperature and pressure of the refrigerant recovered by the compressor 110 are provided in the refrigerant return pipe passing through the four-way valve 120 and directed to the compressor 110 , And a control unit for controlling the flow path of the refrigerant so that heat exchange is performed in the refrigerant heat transfer unit (130) only when the temperature and pressure measured by the thermometer (T1) and the pressure gauge (P1) And the like.

A thermometer T2 and a pressure gauge P2 for measuring the temperature and the pressure of the refrigerant passing through the compressor 110 are provided in a refrigerant supply pipe directed to the four-way valve 120 through the compressor 110 , The control unit may control the load of the compressor 110 such that the temperature and pressure measured by the thermometer T2 and the pressure gauge P2 become the set supply temperature and the set supply pressure.

The heat storage heat exchanger (310) may be provided in a plurality of ways so that the coolant flows in series, and the heating water passes through the heat exchanger in parallel.

In the heat storage operation mode of the heat pump, the refrigerant discharged from the compressor 110 flows through the four-way valve 120, the regenerative heat exchanger 310, the receive tank 140, the expansion valve 150, the outdoor heat exchanger 170, the four-way valve 120, and the accumulator 180, and is then recovered to the compressor 110.

The refrigerant discharged from the compressor 110 flows through the four-way valve 120, the heat storage heat exchanger 310, the receive tank 140, the expansion valve 150, the outdoor heat exchanger 150, The heat exchanger 170, the four-way valve 120 and the accumulator 180 are sequentially circulated to be recovered to the compressor 110 and the refrigerant is circulated through the piping connecting the four-way valve 120 and the heat storage heat exchanger 310 And is circulated so as to be merged into the receiving tank 140 via the expansion valve 220 and the indoor heat exchanger 210.

The refrigerant discharged from the compressor 110 flows through the four-way valve 120, the regenerative heat exchanger 310, the outdoor heat exchanger 170, the receive tank 140, And may be circulated so as to be recovered to the compressor 110 via the expansion valve 220, the indoor heat exchanger 210, the four-way valve 120 and the accumulator 180 in order.

According to the hybrid heat pump boiler system of the present invention, since the heat of the refrigerant discharged from the compressor to the high-temperature and high-pressure state is transferred to the refrigerant recovered by the compressor, the temperature of the refrigerant recovered by the compressor can be prevented from lowering, And at the same time, the refrigerant is introduced into the accumulator in a state where the temperature of the refrigerant is increased. Therefore, the vaporization of the refrigerant is promoted, and the heat exchange performance can be improved.

Also, the condensation heat of the refrigerant discharged from the compressor and condensed in the heat storage heat exchanger is used as the heat source of the heating water and the hot water. When the heat is insufficient, the boiler is operated to supply the heat source for heating and hot water supply, Energy can be saved.

In addition, it is possible to selectively operate the heat pump operation mode, the indoor heating and heat storage operation mode, the indoor cooling and heat storage operation mode in one system, and the heating and hot water supply operation of the boiler using the condensation heat of the refrigerant as a heat source. Can be performed at the same time.

1 is a view showing a heat storage operation mode in a hybrid heat pump boiler system according to a first embodiment of the present invention,
FIG. 2 is a view showing the indoor heating and storage heat in the hybrid heat pump boiler system according to the first embodiment of the present invention, the heating or hot water supply operation mode of the boiler,
FIG. 3 is a view showing modes of indoor cooling and storage, and heating or hot water supply operation of a boiler in the hybrid heat pump boiler system according to the first embodiment of the present invention,
4 is a configuration diagram of a hybrid heat pump boiler system according to a second embodiment of the present invention,
5 is a configuration diagram of a hybrid heat pump boiler system according to a third embodiment of the present invention,
6 is a configuration diagram of a hybrid heat pump boiler system according to a fourth embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the hybrid heat pump boiler system according to the first embodiment of the present invention includes an outdoor unit 100 and an indoor unit 200 constituting a heat pump, and a condensing heat of the refrigerant circulating through the heat pump And a boiler 400 for heating the hot water and the hot water using the heat of combustion of the burner. The heating water and the hot water discharged from the boiler 400 are heated by the heating unit 500 And the hot water supply unit 600.

The outdoor unit (100) includes a compressor (110) for compressing refrigerant to a high temperature and a high pressure state, and a switching unit for switching the flow path of the refrigerant discharged from the compressor (110) in accordance with a heat storage and heat storage operation mode and a cooling and heat storage operation mode A refrigerant heat transfer part 130 for transferring the heat of the refrigerant discharged from the compressor 110 to the high temperature and high pressure state to the low temperature and low pressure refrigerant recovered by the compressor 110, (140) in which a refrigerant circulating in a pump is stored; an expansion valve (150) in which the refrigerant discharged from the receiving tank (140) is subjected to a monotonic expansion in a low temperature and a low pressure state; And an accumulator 180 for separating the liquid refrigerant from the refrigerant recovered by the compressor 110. The outdoor heat exchanger 170 is a heat exchanger that exchanges heat with outdoor air.

The refrigerant heat transfer part 130 may include a refrigerant supply pipe that passes through the four-way valve 120 and is directed to the heat storage heat exchanger 310 and a refrigerant supply pipe that passes the four- And a refrigerant heat exchanger (130-1) in which heat exchange is carried out by incorporating a refrigerant recovery pipe directed to the refrigerant heat exchanger (130-1).

Here, the refrigerant supply pipe and the recovery pipe refer to the operation mode of the heat pump. In the heating / heating operation mode of the heat pump described later, the refrigerant supply pipe is the pipe 121, The refrigerant supply pipe becomes the pipe 191 and the refrigerant return pipe becomes the pipe 123 in the cooling and heat storage operation mode of the heat pump. The operation mode of the heat pump will be described later.

A check valve 160 (not shown) is provided at one side of the expansion valve 150 to allow the flow of the refrigerant only in the direction from the outdoor heat exchanger 170 to the receiving tank 140 and to block the flow of the refrigerant in the opposite direction. Is installed in parallel with the expansion valve (150).

The indoor unit 200 includes an indoor heat exchanger 210 that is supplied to the receiving tank 140 or through which the refrigerant passes through the four-way valve 120 and is heat-exchanged with the indoor air, and an indoor heat exchanger 210 that is supplied to the indoor heat exchanger 210, And an expansion valve 220 in which the refrigerant passing through the unit 210 is thermally expanded in a low-temperature and low-pressure state.

The heat storage unit 300 includes a heat storage heat exchanger 310 through which the refrigerant passes through the four-way valve 120 and is heat-exchanged with the heating water, And a water tank 320 in which hot water is stored.

The boiler 400 includes a first heat exchanger 410 and a second heat exchanger 410. The first heat exchanger 410 heats the heated water that has absorbed heat through the water tank 320 by the combustion of a burner And a second heat exchanger 420 for exchanging heat between the hot water and the hot water.

Hereinafter, the outdoor unit 100, the indoor unit 200, the heat storage unit 300, the boiler 400, the heating unit 500, and the hot water supply unit 600 are provided with refrigerant, hot water, The piping structure will be described.

First, a piping structure for connecting the outdoor unit 100 constituting the heat pump to the outdoor unit 200 and the heat storage heat exchanger 310 will be described.

A supply pipe 111 is connected between the outlet of the compressor 110 and the four-way valve 120. Between the four-way valve 120 and one side of the refrigerant heat exchanger 130-1, a pipe 121 and a pipe 123 are connected to each other. Between the four-way valve 120 and the outdoor heat exchanger 170, The pipe 172 is connected.

The pipe 131 connected to the pipe 121 and passing through the refrigerant heat exchanger 130-1 is connected to a pipe 311 extending to the inlet side of the heat storage heat exchanger 310, (301) is installed.

A branch pipe 134 that does not pass through the refrigerant heat exchanger 130-1 is connected between the pipe 121 and the pipe 131 and a valve 104 is installed in the branch pipe 134. [

A return pipe 132 connected to the pipe 123 and passing through the refrigerant heat exchanger 130-1 is connected to an inlet of the accumulator 180. [

The first bypass pipe 191 branches to the piping 172 and passes through the refrigerant heat exchanger 130-1 and is connected to the piping 131. On the refrigerant heat exchanger 130-1 side of the piping 131, A valve 102 is provided. A branch pipe 133 which does not pass through the refrigerant heat exchanger 130-1 is connected to the inlet side and the outlet side of the refrigerant heat exchanger 130-1 in the first bypass pipe 191, 133 are provided with a valve 103.

The second bypass pipe 192 branches to one side of the first bypass pipe 191 and is connected to the pipe 312 extending to the outlet side of the heat storage heat exchanger 310.

A valve 101 is installed in the pipe 172 located between the first bypass pipe 191 and the second bypass pipe 192.

The third bypass pipe 193 branches to the second bypass pipe 192 and is connected to the pipe 141 at one side of the receive tank 140. A valve 108 is provided in the third bypass pipe 193 and a valve 107 is connected to the second bypass pipe 192 located between the pipe 172 and the third bypass pipe 193. [ Respectively.

A piping 142 is connected between the receiving tank 140 and one side branch point of the expansion valve 150 and the check valve 160 and the other branch point of the expansion valve 150 and the check valve 160 is connected to the outdoor heat exchanger 170 are connected to a pipe 171.

A pipe 211 is branched to the indoor heat exchanger 210 side of the indoor unit 200 and a pipe 311 located between the pipe 211 and the pipe 191 is connected to a valve 106 Is installed.

Pipes 221 and 141 are connected between the expansion valve 220 and the receiving tank 140 of the indoor unit 200.

Next, the piping structure of the heat accumulating unit 300 will be described.

The outlet pipe 331 of the heat storage heat exchanger 310 is connected to the inlet of the three-way valve 340 and the pipe 341 is connected between one side of the three-way valve 340 and the inlet of the water tank 320 . The pipe (331) is provided with a pump (330) for feeding the heated water.

The inlet side pipe 351 of the heat storage heat exchanger 310 is connected to the inlet of the three-way valve 350 and the pipe 341 is branched to the outlet side of the water tank 320 .

Next, a piping structure for connecting the first heat exchanger 410 of the boiler 400 with the heating unit 500 and the water tank 320 will be described.

Way valve 440 is installed in the outlet side pipe 411 of the first heat exchanger 410 and the pipe 411 is connected to the inlet of the three way valve 510 provided in the heating part 500.

A heating pipe 511 is connected to one side of the three-way valve 510 to pass through a heating destination 520. An end of the heating pipe 511 is connected to the other side of the three- To the piping 512 for connection.

A pipe 321 extending to the inlet of the water tank 320 is connected to the other side of the three-way valve 350.

The pipe 321 passing through the water tank 320 is connected to the pipe 351 by a pipe 322.

A pipe 412 is connected between one side of the three-way valve 340 and an inlet of the first heat exchanger 410 and a pump 430 is installed in the pipe 412.

A pipe 413 is provided between the three-way valve 440 provided at the outlet side of the first heat exchanger 410 and the pipe 412 via the second heat exchanger 420.

Next, a piping structure for connecting the second heat exchanger 420 of the boiler 400 to the hot water supply unit 600 and the water tank 320 will be described.

An inlet pipe 620 branches to a lower portion of the water tank 320 and a discharge pipe 630 is connected to an upper portion of the water tank 320 so as to be connected to the three-way valve 640 .

An inlet pipe 650 extending to the inlet of the second heat exchanger 420 is connected to one side of the three-way valve 640.

A discharge pipe 660 for supplying hot water to the hot water supply destination 680 is connected to the outlet side of the second heat exchanger 420.

On the other hand, a mixed direct water supply pipe 670 is connected to the other side of the three-way valve 640 and connected to the discharge pipe 660. A check valve 671 and a mixing valve 672 are installed in the mixed direct water supply pipe 670 do.

Hereinafter, the operation mode of the hybrid heat pump boiler system of the present invention will be described.

<Heat storage operation mode>

1, in a heat storage operation mode of the heat pump, the high temperature and high pressure refrigerant discharged from the compressor 110 flows through the refrigerant heat exchanger 130-1 through the four-way valve 120 along the supply pipe 111, And the refrigerant that has passed through the refrigerant heat exchanger 130-1 flows into the heat storage heat exchanger 310 through the pipe 131 and the pipe 311. [

The refrigerant passing through the heat storage heat exchanger 310 and having transferred heat is introduced into the receiving tank 140 through the pipe 312, the pipe 192, the third bypass pipe 193 and the pipe 141.

The refrigerant discharged from the receiving tank 140 is thermally expanded into the low temperature and low pressure state through the expansion valve 150 through the pipe 142. Heat is absorbed through the outdoor heat exchanger 170 through the piping 171 and then is absorbed through the piping 123 through the piping 172 and the piping 122 through the four- The refrigerant having passed through the condenser 130-1 flows into the accumulator 180 through the recovery pipe 132 and the refrigerant separated from the liquid phase by the accumulator 180 is recovered by the compressor 110 through the pipe 181 do.

In the refrigerant heat exchanger 130-1, heat exchange is performed between the high temperature refrigerant discharged from the compressor 110 and the low temperature refrigerant recovered by the compressor 110, so that the refrigerant recovered by the compressor 110 is cooled So that the vaporization of the refrigerant flowing into the accumulator 180 can be promoted.

In the heat storage operation mode of the heat pump, the heating water that absorbs the heat of condensation of the refrigerant via the heat storage heat exchanger 310 is discharged through the pipe 331 by the operation of the pump 330, Flows into the water tank 320 through the water tank 341 and transfers heat to the hot water stored in the water tank 320 via the water tank 320. The heating water that has transferred heat from the water tank 320 is circulated to the heat storage heat exchanger 310 side through the pipe 342 and the pipe 351.

&Lt; Indoor heating and storage heat, boiler heating or hot water supply operation mode >

2, the refrigerant flow between the outdoor unit 100 and the regenerative heat exchanger 310 is the same as the regenerative operation mode of FIG. 2 in the indoor heating and regenerative operation mode, and additionally, the refrigerant heat exchanger 130-1 A part of the refrigerant passing through the pipe 131 flows into the indoor heat exchanger 210 of the indoor unit 200 through the pipe 211 branched from the pipe 131 and flows through the indoor heat exchanger 210 The refrigerant that has transferred heat to the indoor air passes through the expansion valve 220 and is configured to be joined to the receive tank 140 through the pipe 221 and the pipe 141 after the thermal expansion.

The heating water discharged from the first heat exchanger 410 passes through the pipe 411 through the three-way valve 440 and flows through the three-way valve 510 to the heating water supply pipe 511 The heat is transferred through the heating destination 520 through the heat source.

The heating water that has passed through the heating destination 520 flows into the water tank 320 through the pipe 512 and the three-way valve 350 and the pipe 321 to absorb the heat of the hot water stored in the water tank 320 One heating water passes through the pipe 322 and the pipe 351 to absorb the heat of condensation of the refrigerant through the heat storage heat exchanger 310 and then flows through the pipe 331 and the three- And is returned to the first heat exchanger 410. In the first heat exchanger 410, the heating water is heated by the burning of the burner (not shown).

When the temperature of the hot water stored in the water tank 320 is low in the heating operation mode of the boiler, the three-way valve 350 is switched to the pipe 351 so that the heating water does not pass through the water tank 320 .

The direct water flowing through the direct water supply pipe 610 flows into the water tank 320 through the inlet pipe 620 and the hot water stored in the water tank 320 flows into the drain pipe 630 And the hot water which has been exchanged with the heating water in the second heat exchanger 420 flows into the discharge pipe 660 through the three-way valve 640 and the inflow pipe 650, To the hot water requiring destination (680).

<Indoor cooling and storage heat, heating or hot water supply operation mode of boiler>

3, the refrigerant discharged from the compressor 110 flows into the refrigerant heat exchanger 130-1 through the pipe 122 and the first bypass pipe 191 in the indoor cooling and heat storage mode, The refrigerant discharged from the refrigerant heat exchanger 130-1 passes through the heat storage heat exchanger 310 through the pipe 311. The refrigerant discharged from the refrigerant heat exchanger 130-1 flows through the refrigerant heat exchanger 130-1, And conveys condensation heat to the heating water.

The refrigerant having passed through the heat storage heat exchanger 310 flows into the indoor heat exchanger 170 through the pipe 312, the second bypass pipe 192 and the pipe 172, The refrigerant passes through the pipe 171, the check valve 160, and the pipe 142, and flows into the receiving tank 140.

The refrigerant discharged from the receiving tank 140 flows through the pipe 141 and the pipe 221 to the indoor heat exchanger 210 through the expansion valve 220 of the indoor unit 200, And absorbs heat from indoor air to cool indoor air. The refrigerant passing through the indoor heat exchanger 210 is heated by heat exchange with the refrigerant discharged from the compressor 110 via the refrigerant heat exchanger 130-1 through the pipe 211 and the pipe 131 The refrigerant evaporated in the accumulator 180 flows into the accumulator 180 through the recovery pipe 132 after passing through the four-way valve 120 again through the refrigerant heat exchanger 130-1 And is recovered to the compressor 110 through the pipe 181.

The heating / hot water supply operation mode of the boiler is the same as that of FIG. 2, so that a duplicate description thereof will be omitted.

As described above, according to the present invention, since the refrigerant heat transfer unit 130 that transfers the heat of the refrigerant discharged from the compressor 110 to the refrigerant recovered by the compressor 110, that is, the refrigerant heat exchanger 130-1, Since the refrigerant in a state in which the temperature of the accumulator 180 is raised to a certain degree is introduced into the accumulator 180, vaporization of the refrigerant is promoted, and the performance of the heat pump can be improved.

In addition, the heat storage due to the condensation heat of the refrigerant can be utilized as a heat source in the heating or hot water supply operation of the boiler, thereby reducing the combustion load of the boiler 400 and reducing the energy required for burning the burner.

The hybrid heat pump boiler system according to the second embodiment of the present invention shown in FIG. 4 differs from the first embodiment in that the configuration of the refrigerant heat transfer unit 130 is changed, The same applies.

The refrigerant heat transfer portion 130 according to the present embodiment is branched from the refrigerant supply pipe 121 passing through the four-way valve 120 to the heat storage heat exchanger 310 and connected to the accumulator 180, A refrigerant heat exchanger 130-2 in which heat exchange is carried out by incorporating a refrigerant recovery pipe 123 passing through the four-way valve 120 to the compressor 110, .

With this configuration, in the heat accumulating or heating operation mode of the heat pump, a part of the refrigerant discharged from the compressor 110 and supplied through the pipe 121 through the four-way valve 120 is branched through the branch pipe 136 The heat is transferred to the recovered refrigerant via the refrigerant heat exchanger 130-2 through the pipe 123 via the refrigerant heat exchanger 130-2 and then flows into the accumulator 180 through the pipe 131 So that the image formation of the outdoor unit can be suppressed and the vaporization of the refrigerant can be promoted.

The hybrid heat pump boiler system according to the third embodiment of the present invention shown in FIG. 5 differs from the first and second embodiments in that the configuration of the refrigerant heat transfer unit 130 is changed And the other configurations are the same.

The refrigerant heat transfer part 130-3 according to the present embodiment is branched from the refrigerant supply pipe 121 passing through the four-way valve 120 and toward the heat storage heat exchanger 310, A flow control valve 130b for controlling the flow rate of the refrigerant passing through the refrigerant branch 130a, and a flow control valve 130b for controlling the flow rate of the refrigerant passing through the refrigerant branch 130a. The refrigerant pipe 130a is connected to the refrigerant return pipe 123, .

With this configuration, in the heat accumulation or heating operation mode of the heat pump, a part of the refrigerant discharged from the compressor 110 and supplied through the pipe 121 through the four-way valve 120 is branched through the branch pipe 130a The refrigerant is combined with the refrigerant recovery pipe 123 and flows into the accumulator 180, so that the image formation of the outdoor unit can be suppressed and the evaporation of the refrigerant can be promoted.

Referring to FIG. 6, the hybrid heat pump boiler system according to the fourth embodiment of the present invention differs from the first to third embodiments in that the heat storage heat exchanger 310 includes a plurality of heat storage heat exchangers 310-1, 310 -2), the refrigerant is passed through the refrigerant line in series, and the heating water passes through the refrigerant line in parallel and is heat-exchanged.

According to this configuration, since the refrigerant is heat-exchanged with the heating water in the plurality of heat storage heat exchangers (310-1, 310-2), the heat storage efficiency can be improved by increasing the heat exchange area.

In the above embodiments, a thermometer T1 for measuring the temperature and the pressure of the refrigerant recovered by the compressor 110 is connected to the refrigerant recovery pipe 132 passing through the four-way valve 120 and directed to the compressor 110, And a pressure gauge P1.

A control unit for controlling the flow path of the refrigerant so that heat exchange is performed in the refrigerant heat transfer unit 130 only when the temperature and pressure measured by the thermometer T1 and the pressure gauge P1 are lower than a predetermined set number of times and a set number of pressures (Not shown).

In this case, in the first embodiment, the flow paths of the refrigerant passing through the refrigerant heat exchanger 130-1 can be controlled by controlling the opening and closing of the valves 102, 103 and 104. In the second embodiment, by controlling the opening and closing of the valves 102, 103 and 109 The flow rate of the refrigerant passing through the refrigerant heat exchanger 130-2 can be controlled. In the third embodiment, by controlling the amount of opening of the flow rate control valve 130b, The flow rate can be controlled.

According to such a configuration, it is possible to control whether or not heat exchange with the refrigerant discharged from the compressor 110 corresponding to the temperature of the refrigerant recovered by the compressor 110 according to the seasonal change or the change of the installation environment.

A thermometer T2 and a pressure gauge P2 for measuring the temperature and pressure of the refrigerant having passed through the compressor 110 are connected to the refrigerant supply pipe 111 passing through the compressor 110 and directed to the four- And the control unit controls the load of the compressor 110 such that the temperature and pressure measured by the thermometer T2 and the pressure gauge P2 are equal to a predetermined set supply temperature and a preset supply pressure.

As described above, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention as defined in the appended claims. And such modifications are within the scope of the present invention.

100: outdoor unit 110: compressor
120: Four-way valve 130: Refrigerant heat transfer part
130-1, 130-2: refrigerant heat exchanger 130a:
130b: Flow control valve 140: Receive tank
150: expansion valve 160: check valve
170: indoor heat exchanger 180: accumulator
191: first bypass pipe 192: second bypass pipe
193: Third bypass pipe 200: indoor unit
210: indoor heat exchanger 220: expansion valve
300: Heat storage unit 310: Heat storage heat exchanger
320: Water tank 330: Pump
340,350: Three-way valve 400: Boiler
410: first heat exchanger 420: second heat exchanger
430: Pump 440: Three-way valve
500: heating part 510: three-way valve
520: Heating source 600: Hot water supply part
610: Direct water supply pipe 620: Inflow pipe
630: discharge pipe 640: three-way valve
650: inlet pipe 660: outlet pipe
670: Mixed direct supply pipe 680: Hot water supply destination

Claims (11)

A heat storage unit 300 for recovering and accumulating the heat of condensation of the refrigerant circulating through the heat pump and the heat of combustion of the heat and the burner stored in the heat storage unit 300, And a boiler (400) for heating the heating water and the hot water using the heating water,
The outdoor unit 100 includes a compressor 110 for compressing a refrigerant, a four-way valve 120 for switching a flow path of the refrigerant discharged from the compressor 110 according to an operation mode of the heat pump, (140) for storing circulating refrigerant, an expansion valve (150) for expanding the refrigerant discharged from the receiving tank (140) by a single thermal expansion, a refrigerant supplied through the four-way valve (120) And an accumulator 180 for separating the liquid refrigerant from the refrigerant recovered by the compressor 110, wherein the outdoor heat exchanger 170 exchanges heat with the outdoor air through the outdoor heat exchanger 170;
The indoor unit 200 includes an indoor heat exchanger 210 which is supplied to the receiving tank 140 or through which the refrigerant passes through the four-way valve 120 and exchanges heat with indoor air, Or an expansion valve (220) through which the refrigerant through the indoor heat exchanger (210) is thermally expanded;
The heat storage unit 300 includes a regenerative heat exchanger 310 through which refrigerant passes through the four-way valve 120 and is heat-exchanged with the heating water, and a heating water heat exchanger 310 through which the heat is transferred via the regenerative heat exchanger 310 And a water tank (320) in which hot water is stored;
The boiler 400 includes a first heat exchanger 410 that heats the heated water that has absorbed heat through the water tank 320 by the burning of the burner and a second heat exchanger 410 that passes through the first heat exchanger 410 And a second heat exchanger (420) in which heating water and hot water are heat-exchanged;
Wherein the outdoor unit (100) is provided with a refrigerant heat transfer unit (130) for transferring the heat of the refrigerant discharged from the compressor (110) to the refrigerant recovered by the compressor (110).
The method according to claim 1,
The refrigerant heat transfer part (130)
A supply pipe for the refrigerant passing through the four-way valve 120 and toward the heat storage heat exchanger 310 and a refrigerant recovery pipe for passing the refrigerant directed toward the compressor 110 through the four-way valve 120 are heat- And a refrigerant heat exchanger (130-1).
3. The method of claim 2,
A branch pipe for bypassing the refrigerant discharged from the compressor 110 to the outlet side of the refrigerant heat exchanger 130-1 without passing through the refrigerant heat exchanger 130-1 is connected to the supply pipe, Wherein the branch pipe is provided with a valve for opening and closing a flow path.
The method according to claim 1,
The refrigerant heat transfer part (130)
A branch pipe 136 branched from a refrigerant supply piping passing through the four-way valve 120 and directed to the heat storage heat exchanger 310 and connected to the accumulator 180 and opened and closed by a valve, And a refrigerant heat exchanger (130-2) through which the refrigerant return pipe passing through the compressor (120) and the refrigerant returning pipe toward the compressor (110) is installed to perform heat exchange.
The method according to claim 1,
The refrigerant heat transfer part (130)
A refrigerant flow branching from a refrigerant supply piping passing through the four-way valve 120 and toward the regenerative heat exchanger 310 and passing through the four-way valve 120 to a refrigerant return pipe directed to the compressor 110, And a flow control valve (130b) for controlling the flow rate of the refrigerant passing through the refrigerant tube (130a).
6. The method according to any one of claims 3 to 5,
A thermometer T1 and a pressure gauge P1 for measuring the temperature and pressure of the refrigerant recovered by the compressor 110 are provided in the refrigerant return pipe passing through the four-way valve 120 and directed to the compressor 110 ,
And a control unit for controlling the flow path of the refrigerant so that heat exchange is performed in the refrigerant heat transfer unit 130 only when the temperature and pressure measured by the thermometer T1 and the pressure gauge P1 are lower than the preset number of times and the set number of pressures A hybrid heat pump boiler system.
The method according to claim 6,
A thermometer T2 and a pressure gauge P2 for measuring the temperature and the pressure of the refrigerant passing through the compressor 110 are provided in a refrigerant supply pipe directed to the four-way valve 120 through the compressor 110 ,
Wherein the control unit controls the load of the compressor (110) so that the temperature and pressure measured by the thermometer (T2) and the pressure gauge (P2) become the set supply temperature and the set supply pressure.
The method according to claim 1,
Wherein the heat storage heat exchanger (310) is provided in plural, and the refrigerant is passed through in series, and the heat water is heat exchanged via the heat pipes in parallel.
The method according to claim 1,
In the heat storage operation mode of the heat pump,
The refrigerant discharged from the compressor 110 flows through the four-way valve 120, the regenerative heat exchanger 310, the receive tank 140, the expansion valve 150, the outdoor heat exchanger 170, the four- And the accumulator (180) are sequentially circulated and recovered to the compressor (110).
The method according to claim 1,
In the indoor heating and heat storage operation mode of the heat pump,
The refrigerant discharged from the compressor 110 flows through the four-way valve 120, the regenerative heat exchanger 310, the receive tank 140, the expansion valve 150, the outdoor heat exchanger 170, the four- And the accumulator 180 are sequentially circulated so as to be recovered to the compressor 110 and branched from a pipe connecting the four-way valve 120 and the regenerative heat exchanger 310 to be connected to the expansion valve 220 through indoor heat exchange (210) to the receiving tank (140). The hybrid heat pump boiler system according to claim 1,
The method according to claim 1,
In the indoor cooling and heat storage operation mode of the heat pump,
The refrigerant discharged from the compressor 110 flows through the four-way valve 120, the regenerative heat exchanger 310, the outdoor heat exchanger 170, the receive tank 140, the expansion valve 220, the indoor heat exchanger 210, , The four-way valve (120), and the accumulator (180) are sequentially circulated to be recovered to the compressor (110).

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