KR20100046694A - A water heat exchanging type air conditioner associated with heat pump - Google Patents

Abstract

PURPOSE: A water heat exchanging type air conditioner associated with heat pump is provided to maximize the operating efficiency of an indoor unit by preventing the refrigerant shortage of the indoor unit. CONSTITUTION: A water heat exchanging type air conditioner associated with heat pump comprises an outdoor unit(100), a plurality of indoor units(200), a distributor, a flow rate control valve(240). The outdoor unit comprises a compressor and a water heat exchanger(120). The indoor unit comprises an air heat exchanger(210) and an expansion valve(220). The air heat exchanger heat-exchanges the refrigerant heat-exchanged in the water heat exchanger with the water and indoor air. The distributor is installed between the outdoor unit and indoor unit and controls a refrigerant flow. The opening angel of the flow rate control valve is controlled according to the operation mode of the indoor unit.

Description

Heat pump interchangeable air conditioner {A water heat exchanging type air conditioner associated with heat pump}

1 is a block diagram of a heat pump interlocking water heat exchanger type air conditioner according to the present invention.

Figure 2 is a detailed block diagram showing the internal configuration of the outdoor unit of the heat pump interlocking water heat exchanger air conditioner according to the present invention.

Figure 3 is an operation configuration showing the refrigerant flow during the operation of the heat dissipation heat exchange type air conditioner of the heat pump according to the present invention.

Figure 4 is an operation configuration showing the refrigerant flow during operation of the cooling main body of the heat pump interlocking water heat exchange type air conditioner according to the present invention.

Figure 5 is an operation configuration showing the refrigerant flow during the heating operation of the heat pump interlocking water heat exchange type air conditioner according to the present invention.

Figure 6 is an operation configuration showing the flow of refrigerant during the operation of the heating main body of the heat pump interlocking water heat exchange type air conditioner according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Outdoor unit 110. Compressor

112. Compressor discharge temperature sensor 120. Water refrigerant exchanger

200. Indoor unit 240. Flow control valve

300. Dispenser 400. Motion control means

The present invention is provided with a flow control valve corresponding to the number of the indoor unit between the plurality of indoor unit and the distributor, and configured to be able to adjust the opening degree of the plurality of flow control valve at the same time cooling and heating operation heat pump interworking to improve heat exchange efficiency A water heat exchange air conditioner.

In general, an air conditioner is a cooling / heating system that cools a room by a repetitive action of inhaling hot air in a room, exchanging heat with a low temperature refrigerant, and then discharging it into the room. A condenser, expansion valve, and evaporator that forms a series of refrigerant cycles.

In recent years, in order to improve the quality of life and meet the needs of customers, in addition to cooling and heating, air polluting and filtering indoor polluted air and making it into clean air and re-injecting it into the room. It has several additional functions such as re-dehumidification function.

The air conditioner can be divided into a separate type air conditioner in which the outdoor side and the indoor side are separately installed, and an integrated air conditioner in which the outdoor side and the indoor side are integrally installed. The trend is a favored trend.

In addition, hydrothermal exchange type air conditioners are preferred as an alternative for reducing power consumption excessively generated when harmonizing indoor air, and active research and development are in progress.

The water heat exchange air conditioner, unlike a heat exchanger of a general air conditioner in which a refrigerant is heat-exchanged by outdoor air, is provided with a water refrigerant heat exchanger which allows the water and refrigerant to flow together without being mixed with each other. The refrigerant heat exchanged in the heat exchanger is configured to form part of the refrigerant cycle.

However, the conventional hydrothermal exchange air conditioner having such a configuration has the following problems.

That is, the water heat exchange air conditioner operates a plurality of indoor spaces in the same mode.

That is, many indoor units are all operated in the cooling mode or all are operated in the heating mode.

Therefore, there is a problem that the ease of use and heat exchange efficiency of the air conditioner is lowered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat pump interlocking water heat exchanger type air conditioner capable of simultaneously performing cooling and heating in a plurality of indoor spaces.

Another object of the present invention is to provide a flow rate control valve corresponding to the number of indoor units between a plurality of indoor units and distributors, and to improve both cooling and heating operation efficiency by adjusting the opening degree of the multiple flow rate control valves during simultaneous cooling and heating operations. It is to provide a heat pump interlocking water exchange air conditioner as possible.

The heat pump interlocking water heat exchange air conditioner according to the present invention includes an outdoor unit including a compressor for compressing a refrigerant and a water refrigerant exchanger for exchanging water and refrigerant; An air-cooled heat exchanger for heat-exchanging the refrigerant and heat exchanged with water in the water-cooled heat exchanger, and a plurality of indoor units including an expansion valve for reducing the pressure of the refrigerant; A distributor provided between the outdoor unit and the indoor unit to control a refrigerant flow; It is characterized in that it comprises a flow rate control valve provided between the plurality of expansion valves and the distributor and corresponding to the plurality of indoor units, respectively, the opening degree is adjusted according to the operation mode of the indoor unit.

The flow rate control valve is characterized in that the plurality of indoor units have the same opening degree when operating in the same mode.

The flow control valve is characterized in that it has a maximum opening degree when it corresponds to an indoor unit operating in an operation mode exceeding (n / 2) pieces with respect to the number n of the indoor units.

The flow rate control valve has the same opening degree when the indoor unit operating in the cooling operation mode and the indoor unit operating in the heating operation mode are each (n / 2) with respect to the number n of the indoor units.

The compressor is characterized by increasing or decreasing the refrigerant compression amount in accordance with the opening amount of the plurality of flow control valve.

The flow control valve is characterized in that the linear expansion valve (LEV).

According to the heat pump interlocking water heat exchange type air conditioner having such a configuration, there is an advantage that the heat exchange efficiency is improved when operating in the simultaneous cooling and heating mode.

Hereinafter, a configuration of a heat pump interlocking water heat exchange type air conditioner according to the present invention will be described with reference to FIG. 1.

1 is a block diagram of a heat pump interlocking water heat exchanger type air conditioner according to the present invention.

As shown in the figure, the heat pump-linked water heat exchanger type air conditioner includes one or more outdoor units 100 and a plurality of indoor units 200, and a refrigerant flow is provided between the indoor units 200 and the outdoor units 100. It is configured to include a distributor 300 for controlling.

In addition, one side of the indoor unit 200 and the outdoor unit 100 is provided with operation control means 400 for controlling the operation of the indoor unit 200 and the outdoor unit 100.

The outdoor unit 100 includes a compressor 110 for compressing a refrigerant, which is a working fluid, at a high temperature and high pressure, a water refrigerant heat exchanger 120 for exchanging heat between the refrigerant and water, an accumulator 130 for storing a liquid refrigerant, and outdoor electronics. Valve 104 and the like.

Therefore, when the heat pump interlocked water heat exchanger air conditioner is operated, the water refrigerant heat exchanger 120 is installed in a separate place of an indoor space to prevent freezing due to rapid temperature drop in the winter season because water passes through the water. .

Then, the water passing through the water refrigerant heat exchanger 120 is moved along the several circuits 102 forming a closed circuit.

The water circuit 102 may be further provided with a separate water circuit device 104 such as a boiler or a cooler.

That is, the boiler or the cooler may be selectively installed according to the climatic characteristics of the place where the heat pump interlocking water heat exchange air conditioner is installed.

For example, when installed in a hot area, the water refrigerant heat exchanger 120 has a long period of being used as a condenser, so a cooler must be installed to increase the heat exchange efficiency of the water refrigerant heat exchanger 120, and when installed in a cold area, the water refrigerant Since the heat exchanger 120 is used as an evaporator for a long time, it is preferable that a boiler be connected to increase the heat exchange efficiency of the water refrigerant exchanger 120.

The indoor unit 200 is installed in the interior of the building to discharge air directly into the space for air conditioning, respectively provided in a plurality of indoor space to perform the cooling or heating at the same time.

In addition, the indoor unit 200 is generally provided with an air coolant heat exchanger 210 and an expansion valve 220.

Between the outdoor unit 100 and the distributor 300, the liquid pipe 105, which is a single pipe through which the liquid refrigerant flows, the high pressure engine 106 through which the high pressure gas refrigerant flows, and the low pressure engine 108 through which the low pressure gas refrigerant flows, are in communication. It is installed.

The indoor unit 200 includes an indoor liquid pipe 230 through which a liquid refrigerant flows, and an indoor engine 240 through which gas refrigerant flows, and the indoor liquid pipe 230 and the indoor engine 240 include a liquid pipe 105. The high pressure engine 106 and the low pressure engine 108 are connected to communicate with the distributor 300.

In the exemplary embodiment of the present invention, a plurality of indoor units 200 may be installed, and the plurality of indoor units 200 may operate in the same operation mode, or may operate in the simultaneous operation mode in which all of different operations are simultaneously performed.

That is, the indoor unit 200 includes a first indoor unit 200a, a second indoor unit 200b, a third indoor unit 200c, and a fourth indoor unit 200d in the embodiment of the present invention. The first air refrigerant heat exchanger 210a, the second air refrigerant heat exchanger 210b, the third air refrigerant heat exchanger 210c, and the fourth air refrigerant heat exchanger 210d are respectively provided therein.

In addition, the plurality of indoor units are provided with a first expansion valve 220a, a second expansion valve 220b, a third expansion valve 220c and a fourth expansion valve 220d, respectively.

In addition, the plurality of indoor unit 200 is provided with a flow rate control valve 240 for controlling the flow rate of the refrigerant by opening degree is adjusted according to the operation mode of the air conditioner.

The flow control valve 240 is a linear expansion valve (LEV) is applied between the expansion valve 220 and the distributor 300, and configured to correspond to the plurality of indoor units 200, respectively, And a first flow rate control valve 240a, a second flow rate control valve 240b, a third flow rate control valve 240c, and a fourth flow rate control valve 240d.

Therefore, when the first indoor unit 200a is operated in the cooling mode and the remaining indoor units except the first indoor unit 200a are operated in the heating mode, (n / 2) of the number n of the indoor units 200. A second flow control valve 240b and a third flow control valve corresponding to the indoor units (the second indoor unit 200b, the third indoor unit 200c, and the fourth indoor unit 200d) operating in more than two operation modes ( 240c) and the fourth flow rate control valve 240d maintain the maximum opening degree.

On the contrary, the opening amount of the first flow rate control valve 240a corresponding to the first chamber 200a is reduced.

Therefore, the heat exchanger efficiency can be improved by increasing the flow rate of the refrigerant by increasing the opening degree of the flow control valve 240 corresponding to the mode in which the air conditioner operates in operation.

Of course, when the plurality of indoor units 200 are all operated in the cooling mode or the heating mode, the first flow rate control valve 240a, the second flow rate control valve 240b, the third flow rate control valve 240c and the third The four flow rate control valve 240d has the same opening degree, and the amount of refrigerant compression of the compressor 110 increases or decreases according to the increase or decrease of the number of indoor units that operate.

On the other hand, the distributor 300 is also called a H Recovery Unit (Heat Recovery Unit), although not shown, a plurality of pipes are provided therein and a plurality of valves are installed in these pipes.

Hereinafter, the configuration of the outdoor unit 100 will be described in detail with reference to FIG. 2.

2 is a detailed configuration diagram showing the internal configuration of the outdoor unit of the heat pump interlocking water heat exchanger air conditioner according to the present invention.

As shown in the figure, the compressor 110 compresses the refrigerant to be at a high temperature and high pressure, and an inverter compressor 110 that is a variable speed heat pump having a variable compression capacity is applied.

In addition, the compressor 110 may further include a constant speed compressor according to the capacity of the air conditioner and the number of the indoor units 200 to be connected.

The compressor discharge temperature sensor 112 and the oil separator 114 for measuring the temperature of the refrigerant discharged from the compressor 110 is provided at the outlet side of the compressor 110, respectively. The oil separator 114 filters the oil mixed in the refrigerant discharged from the compressor 110 to be recovered to the compressor 110 again.

That is, oil used to cool the frictional heat generated when the compressor 110 is driven is discharged to the outlet of the compressor 110 together with the refrigerant. The oil in the refrigerant is separated from the oil separator 114. By returning to the compressor 110 through the oil return pipe (116).

And a check valve 118 is further installed on the outlet side of the oil separator 114 to prevent the backflow of the refrigerant.

One side of the oil return pipe 116 is further provided with an electronic oil recovery pipe 140. The electronic oil recovery pipe 140 is selectively opened when the oil is not smoothly recovered through the oil recovery pipe 116.

That is, the electromagnetic oil return pipe 140 is provided with a solenoid valve 142, and the solenoid valve 142 selectively opens the electronic oil recovery pipe 140 when the operation capacity of the compressor 110 is increased. .

More specifically, more oil is included in the refrigerant compressed and discharged from the compressor 110 when the compressor 110 operates at a high compression ratio.

Therefore, the oil return pipe 116 alone is not sufficient to recover the oil separated from the oil separator 114 to the compressor 110, so that the solenoid valve 142 is opened to allow the oil recovery pipe 140 to be opened. Efficient oil recovery is possible.

The oil separator 114 is connected to communicate with the four-way valve 150 by the pipe. The four-way valve 150 is installed to change the flow direction of the refrigerant according to the cooling and heating operation, each port is an outlet (or oil separator) of the compressor 110, the inlet (or accumulator) of the compressor 110. It is connected to the water refrigerant heat exchanger 120 and the indoor unit 200.

Therefore, the refrigerant discharged from the compressor 110 is collected in one place, and then flows into the four-way valve 150. At the inlet of the four-way valve 150, a high pressure for checking the pressure of the refrigerant discharged from the compressor 110 is obtained. The sensor 118 is installed.

The right side of the four-way valve 150 is provided with a hot gas pipe (132). The hot gas pipe is configured to allow a part of the refrigerant flowing into the four-way valve 150 from the oil separator 114 to be directly introduced into the accumulator 130.

That is, when the hot gas pipe 132 needs to increase the pressure of the low pressure refrigerant flowing into the accumulator 130 during operation of the air conditioner, the high pressure refrigerant at the discharge port side of the compressor 110 is directly directed to the inlet side of the compressor 110. In order to be supplied, the hot gas valve 134 is installed and selectively opened and closed.

An outdoor supercooler 160 is provided below the compressor 110. The outdoor supercooler 160 is to further cool the refrigerant heat-exchanged in the water refrigerant heat exchanger 120 to be described in detail below, any position of the liquid pipe 105 connected to the outlet side of the water refrigerant heat exchanger (120). Is formed.

The outdoor supercooler 160 is formed of a double pipe. That is, the outdoor supercooler 160 includes an inner tube (not shown) in communication with the liquid tube 105, and an outer tube (not shown) in communication with the back transfer pipe 162 which will be separated from the inner tube and will be described below. It is configured by.

Meanwhile, a reverse transfer pipe 162 is provided at the outlet of the outdoor supercooler 160. The reverse transfer pipe 162 serves to guide the refrigerant flowing out of the water refrigerant exchanger 120 and flowing through the liquid pipe 105 to flow into the outer pipe and flow back.

In addition, the reverse transfer pipe 162 is provided with a subcooled expansion valve 164 for converting the liquid refrigerant into a low temperature gas refrigerant by expansion. In addition, the subcooled expansion valve 164 can adjust the amount of refrigerant flowed back through the back conveying pipe 162.

In addition, the refrigerant passing through the outdoor supercooler 160 may be changed to a temperature desired by the user. In addition, as the amount of refrigerant flowing back through the back transfer pipe 162 increases, the temperature of the refrigerant passing through the outdoor supercooler 160 is lowered.

As such, the liquid refrigerant discharged from the water refrigerant heat exchanger 120 is further cooled by the heat conduction while passing through the outdoor supercooler 130, and is supplied to the indoor unit 200, and the outer tube of the outdoor supercooler 130 is provided. The reflux refrigerant discharged from (not shown) is supplied to the compressor 110 and circulated through the accumulator 132 to be described below.

Meanwhile, a liquid pipe temperature sensor 166 measuring a temperature of the refrigerant discharged from the outdoor unit 100 is installed at an outlet of the outdoor supercooler 130, and a subcooling inlet sensor 168 is provided at an outlet of the subcooling expansion valve 164. It is provided to measure the temperature of the reverse flow refrigerant flowing into the outdoor supercooler (160), and the subcooling outlet discharged from the outdoor supercooler (160) is provided with a subcooling outlet sensor (169).

A drier 161 is provided at the right side of the subcooling expansion valve 164. The dryer serves to remove moisture contained in the refrigerant flowing through the liquid pipe 105.

An accumulator 130 is provided above the dryer 161. The accumulator 130 filters the liquid refrigerant so that only the refrigerant in the gas state flows into the compressor 110.

That is, when the refrigerant remaining in the liquid phase is not directly evaporated into the gas of the refrigerant flowing from the indoor unit 200 directly flows into the compressor 110, the compressor 110 to compress the refrigerant into a gas state of high temperature and high pressure load Is increased to cause damage.

Therefore, among the refrigerants introduced into the accumulator 130, the refrigerant that is not evaporated and remains in the liquid state is stored in the lower part of the accumulator 130 because it is relatively heavier than the refrigerant in the gas phase, and only the upper gaseous refrigerant is compressed in the compressor 110. Flows into).

The inlet side of the accumulator 130 is provided with a suction pipe temperature sensor 136 for measuring the temperature of the refrigerant sucked and a low pressure sensor 138 for checking the pressure of the refrigerant.

On the other hand, the operation control means 400 is provided on the upper left inside of the outdoor unit (100). The operation control means 400 is a configuration for controlling the operation of the indoor unit 200 and the outdoor unit 100, although not shown is provided with a control component such as a printed circuit board (PCB) voltage transformer, capacitor, etc. .

In addition, the operation control means 400 also serves to adjust the opening degree of the flow control valve 240 described above.

The opening degree control action of the flow rate control valve 240 of the operation control means 400 will be described in detail when the cooling subject and the heating subject operation mode of the heat pump-linked water heat exchanger type air conditioner are explained.

On the left side of the outdoor solenoid valve 104, a cooling only pipe 170 is further provided. The cooling dedicated piping 170 is configured to flow the refrigerant condensed in the water refrigerant heat exchange 120 when the air conditioner is operating in the cooling mode, the cooling dedicated piping 170 is provided with a cooling valve 172 is optional Is opened.

The receiver 180 is provided on the right side of the cooling dedicated pipe 170. The receiver 180 stores liquid refrigerant condensed while passing through the water refrigerant heat exchanger 120, and is installed to communicate between the water refrigerant heat exchanger 120 and the distributor 300.

On the other hand, the receiver 180, the water refrigerant exchanger 120 is provided. The water refrigerant heat exchanger 120 performs the function opposite to the air refrigerant heat exchanger 210 as a main component of the present invention. That is, when the water refrigerant exchanger 120 acts as an evaporator, the air refrigerant exchanger 210 performs a condenser function.

The water refrigerant exchanger 120 is a plate heat exchanger such that heat exchange between water and refrigerant occurs. That is, the water refrigerant heat exchanger 120 is composed of a plate-type heat exchanger is formed by separating a plurality of thin plates (薄板) at regular intervals, the space in which the refrigerant and water flows.

The water refrigerant exchanger 120 formed of the plate heat exchanger is installed in an upright state as shown in the drawing.

The inlet pipe 121 and the outlet pipe 122 are provided on the left side of the water refrigerant exchanger 120. The inlet pipe 121 guides the water passing through the water circuit device 104 to be introduced into the water refrigerant heat exchanger 120, and is located below the water refrigerant heat exchanger 120.

In addition, the water outlet pipe 122 is provided on the upper side of the left side of the water refrigerant exchanger (120). The outlet pipe 122 serves to allow the water passing through the water refrigerant exchanger 120 through the inlet pipe to be recovered to the water circuit device 104.

The right side of the water refrigerant exchanger 120 is provided with a refrigerant pipe 125 for guiding the inlet and outlet of the refrigerant. The refrigerant pipe 125 includes a first refrigerant pipe 126 located on the upper right side of the water refrigerant heat exchanger 120 and a second refrigerant pipe 127 located on the lower right side.

In addition, the first refrigerant pipe 126 and the second refrigerant pipe 127 guide the flow direction of the refrigerant differently according to the operation mode of the air conditioner.

That is, when the water refrigerant heat exchanger 120 is used as an evaporator, the first refrigerant pipe 126 guides the refrigerant flow into the water refrigerant heat exchanger 120, and the water refrigerant heat exchanger 120 condensers. When used as the second refrigerant pipe 127 is to guide the refrigerant flow into the water refrigerant heat exchanger (120).

Hereinafter, the operation of the heat pump interlocking heat exchanger type air conditioner according to the present invention having the configuration as described above will be described with reference to FIG. 3.

3 is an operation configuration diagram showing the refrigerant flow during the operation of the cooling chamber discharge of the heat pump interlocking water heat exchange type air conditioner according to the present invention.

First, the plurality of indoor units 200 are all used for cooling. Looking at the refrigerant flow of the outdoor unit 100, the gas refrigerant flowing from the indoor unit 200 is compressed from the compressor 110 and then discharged. Oil contained in the refrigerant discharged from the 110 is separated while passing through the oil separator 114 is recovered to the compressor (110).

That is, as the refrigerant is compressed in the compressor 110, oil is mixed in the refrigerant. Since the oil is in the liquid state and the refrigerant is in the gas state, the oil is separated from the oil separator 114 which is the gas-liquid separator.

The refrigerant passing through the oil separator 114 is introduced into the water refrigerant exchanger 120 through the four-way valve 150. Since the water refrigerant heat exchanger 120 acts as a condenser (in the cooling mode), the refrigerant is cooled through water passing through the water refrigerant heat exchanger 120 to become a liquid refrigerant.

The refrigerant discharged from the water refrigerant heat exchanger 120 passes through the cooling only pipe 170. That is, since the cooling valve 172 is open during the operation of the cooling chamber, the refrigerant passing through the water refrigerant exchanger 120 does not pass through the outdoor solenoid valve 104, but only for cooling cooling piping 170. Will pass through.

In the cooling and discharging chamber operation, the subcooling expansion valve 164 is opened to operate the outdoor supercooler 160. Therefore, the refrigerant passing through the cooling only pipe 170 is further cooled in the outdoor supercooler 160 becomes a liquid refrigerant.

The refrigerant passing through the outdoor supercooler 160 passes through a dryer, which removes water contained in the refrigerant, and then flows into the distributor 300 through the liquid pipe 105.

The refrigerant introduced into the distributor 300 is distributed and supplied to the plurality of indoor units 200.

The refrigerant introduced into each indoor unit 200 is expanded and decompressed by the expansion valve 220, and heat exchanges in each air refrigerant heat exchanger 210. At this time, since the air refrigerant heat exchanger 210 all serves as an evaporator, the refrigerant becomes a low pressure gas through heat exchange.

The refrigerant discharged from the air coolant heat exchanger 210 is introduced into the distributor 300 again via the flow control valve 240.

At this time, since the plurality of indoor units 200 are all operated in the same mode (cooling mode), the flow control valve 240 has the same opening degree.

The refrigerant via the distributor 300 flows into the accumulator 130 through the low pressure engine 108.

In the accumulator 130, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressor 110. Through this process, one cycle is completed.

On the other hand, during the operation of the cold discharge chamber as described above, part of the high pressure refrigerant discharged from the compressor 110 is partially moved to the high pressure engine 106. However, the flow of the refrigerant through the high pressure engine 106 is blocked in the distributor 300.

Hereinafter, with reference to the accompanying Figure 4 the operating state of the cooling main unit operation of the air conditioner.

In the cooling main body operation of the embodiment of the present invention, the second indoor unit 200b, the third indoor unit 200c, and the fourth indoor unit 200d of the plurality of indoor units 200 operate in a cooling mode, and the first indoor unit 200a. ) Only works with heating.

To this end, the operation control means 400 controls the opening degree of the second flow rate control valve 240b, the third flow rate control valve 240c and the fourth flow rate control valve 240d among the plurality of flow rate control valves 240 to the maximum. And, the first flow rate control valve 240a is to reduce the open state.

Therefore, even when the plurality of indoor units 200 are simultaneously operated by cooling or heating, the number of indoor units 200 that operate the cooling main body exceeds (n / 2) with respect to the number n of the entire indoor units, and thus the second flow rate corresponding thereto. The control valve 240b, the third flow control valve 240c, and the fourth flow control valve 240d maintain the maximum opening degree to adjust the flow rate of the refrigerant.

In the outdoor unit 100, the refrigerant discharged from the compressor 110 passes through the oil separator 114, and oil is separated and recovered to the compressor 110.

The refrigerant passing through the oil separator 114 is introduced into the water refrigerant exchanger 120 through the four-way valve 150. Since the water refrigerant heat exchanger 120 acts as a condenser (in the cooling mode), the refrigerant exchanges heat with water passing through the inside to become a liquid refrigerant.

The refrigerant discharged from the water refrigerant heat exchanger 120 passes through the outdoor solenoid valve 104. At this time, the cooling only pipe 170 is blocked by the cooling valve (172). In addition, since the supercooled expansion valve 164 is turned off, the refrigerant flows into the distributor 300 through the liquid pipe 105.

The refrigerant passing through the distributor 300 flows into the first, second, third and fourth indoor rooms 200a, 200b, 200c, and 200d.

At this time, the refrigerant introduced into the first chamber (200a) is guided to the indoor engine 240 by the distributor 300, the first air refrigerant heat exchanger (210a), the first expansion valve (220a), the first flow rate control The refrigerant flows through the valve 240a sequentially, and the refrigerant flowing into the 2,3,4 indoor chambers 200b, 200c, and 200d is guided to the indoor liquid pipe 230 by the distributor 300 to the second, third, and fourth chambers. The flow control valves 240b, 240c and 240d, the second, third and fourth expansion valves 220b, 220c and 220d and the second, third and fourth air coolant heat exchangers 210b, 220c and 220d are sequentially passed. .

In this case, the second, third, and fourth indoor units 200b, 200c, and 200d operate in a cooling mode, and the first indoor unit 200a operates in a heating mode.

The refrigerant passing through the first, second, third, and fourth indoor chambers 200a, 200b, 200c, and 200d again flows into the distributor 300, and the refrigerant passing through the distributor 300 flows into the outdoor unit 100. Enter the accumulator 130.

In the accumulator 132, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressor 110. Through this process, one cycle is completed.

Hereinafter will be described with reference to Figure 5 attached to the operating state during the heating operation of the air conditioner.

5 is an operation configuration diagram showing the refrigerant flow during the heating chamber operation of the heat pump interlocking water heat exchange type air conditioner according to the present invention.

When the air conditioner is operated in the heating room, the plurality of indoor units 200 are all used for heating. In addition, since the functions of the respective components have been described in the state description during the cooling and discharging chamber operation, detailed functions of the respective components will be omitted.

First, referring to the refrigerant flow in the outdoor unit 100, the refrigerant discharged from the compressor 110 passes through the oil separator 114 and flows into the distributor 300 through the high pressure engine 106.

The refrigerant introduced into the distributor 300 is supplied into the indoor unit 200 through the indoor engine 240.

The refrigerant passing through the air coolant heat exchanger 210 inside the indoor unit 200 is condensed by heat exchange with water introduced through the inlet pipe 121.

That is, in the case of heating, the air refrigerant heat exchanger 210 acts as a condenser to warm the internal air by heat generation.

Since the expansion valves 220 are all open, the refrigerant changed into the liquid phase while passing through the air coolant heat exchanger 210 is introduced into the distributor 300 through the indoor liquid pipe 230.

The liquid refrigerant in the distributor 300 flows into the outdoor unit 100 through the liquid pipe 105, and the refrigerant introduced into the outdoor unit 100 passes through the outdoor solenoid valve 104 while passing through the outdoor solenoid valve 104. It is supplied to heat exchange.

In this case, since the water refrigerant heat exchanger 120 acts as an evaporator, the liquid refrigerant is changed into a gas state by heat exchange with water.

The low-pressure refrigerant in the gas phase discharged from the water refrigerant heat exchanger 120 passes through the four-way valve 150 and is supplied to the compressor 110 through the accumulator 130. Through this process, one heating cycle is formed.

Hereinafter, with reference to Figure 6 attached to the operation state of the heating main operation of the air conditioner.

6 is an operation configuration diagram showing the refrigerant flow during the operation of the heating main body of the heat pump interlocking water heat exchanger air conditioner according to the present invention.

In the heating main body operation of the embodiment of the present invention, the second indoor unit 200b, the third indoor unit 200c, and the fourth indoor unit 200d of the plurality of indoor units 200 operate in a heating mode, and the first indoor unit 200a. ) Only works with cooling.

To this end, the second flow control valve 240b, the third flow control valve 240c, and the fourth flow control valve 240d of the plurality of flow control valves 240 all have the maximum open state, and the first flow control The valve 240a is reduced in the open state.

Therefore, even when the plurality of indoor units 200 are operated simultaneously with cooling or heating, the number of indoor units 200 that operate the heating subject is greater than (n / 2) with respect to the number n of the entire indoor units 200. The second flow rate control valve 240b, the third flow rate control valve 240c, and the fourth flow rate control valve 240d maintain the maximum opening degree to adjust the flow rate of the refrigerant.

The refrigerant discharged from the compressor 110 of the outdoor unit 100 passes through the oil separator 114, and oil is separated and recovered to the compressor 110.

The refrigerant discharged from the compressor 110 passes through the oil separator 114 and flows into the distributor 300 through the high pressure engine 106.

At this time, the refrigerant passing through the distributor 300 flows into the first, second, third and fourth indoor rooms 200a, 200b, 200c, and 200d.

And the refrigerant flowing into the first chamber (200a) is guided to the room liquid pipe 230 by the distributor 300, the first flow control valve 240a, the first expansion valve 220a, the first air refrigerant heat exchanger Through the 210a sequentially, the refrigerant flowing into the 2, 3, 4 indoors (200b, 200c, 200d) is guided to the indoor engine 240 by the distributor 300 to the 2, 3, 4 holes The refrigerant heat exchangers 210b, 220c, and 220d, the second, third and fourth expansion valves 220b, 220c and 220d, and the second, third and fourth flow control valves 240b, 240c and 240d are sequentially passed.

In this case, the second, third, and fourth indoor units 200b, 200c, and 200d operate in a heating mode, and the first indoor unit 200a operates in a cooling mode.

The refrigerant passing through the first, second, third, and fourth indoor chambers 200a, 200b, 200c, and 200d is introduced into the distributor 300 again, and the refrigerant passing through the distributor 300 is a water refrigerant exchanger 120. After the accumulator 130 is supplied to the compressor 110. Through this process, one cycle is completed.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

In the present invention, the air conditioning mode of a plurality of indoor spaces is configured to simultaneously perform cooling and heating.

Therefore, there is an advantage that the ease of use of the air conditioner is improved.

In addition, in the present invention, a flow rate control valve corresponding to the number of indoor units is provided between the plurality of indoor units and the distributors, and the opening degree of the plurality of flow rate control valves is controlled during simultaneous cooling and heating operations.

Therefore, since the refrigerant shortage of all indoor units for cooling and heating operation is blocked in advance, there is an advantage of maximizing driving efficiency.

Claims (6)

An outdoor unit including a compressor for compressing a refrigerant and a water refrigerant exchanger for exchanging water and refrigerant; An air-cooled heat exchanger for heat-exchanging the refrigerant and heat exchanged with water in the water-cooled heat exchanger, and a plurality of indoor units including an expansion valve for reducing the pressure of the refrigerant; A distributor provided between the outdoor unit and the indoor unit to control a refrigerant flow; And a flow rate control valve provided between the plurality of expansion valves and the distributor and corresponding to each of the plurality of indoor units, the flow control valve being configured to adjust the opening degree according to the operation mode of the indoor unit. The method of claim 1, wherein the flow control valve, Heat pump interlocking water heat exchange type air conditioner, characterized in that when the plurality of indoor units to operate in the same mode having the same opening degree. The method of claim 1, wherein the flow control valve, And a maximum opening degree when the indoor unit is operated in an operation mode exceeding (n / 2) of the number n of indoor units. The method of claim 1, wherein the flow control valve, The heat pump interlocking water exchange type air conditioner of the indoor unit operating in the cooling operation mode and the indoor unit operating in the heating operation mode (n / 2) have the same opening degree with respect to the number n of the indoor units. The method according to any one of claims 2 to 4, The compressor is a heat pump interlocking water heat exchange type air conditioner, characterized in that for increasing the amount of refrigerant compression in accordance with the opening amount of the plurality of flow control valve. The heat pump interlocking water heat exchange air conditioner according to claim 1, wherein the flow control valve is a linear expansion valve (LEV).

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