KR101622045B1 - Absorption Heat Pump - Google Patents

Abstract

The present invention relates to an absorption-type heat pump. The absorption-type heat pump according to the present invention includes: a regenerator separating coolant steam by heating a coolant solution; a condenser liquefying the coolant steam sent from the regenerator by condensing the coolant steam; an evaporator evaporating the coolant solution sent from the condenser; a coolant solution control unit controlling a supply amount of the coolant solution; and an absorber absorbing the coolant steam sent from the evaporator and supplying the coolant solution to the regenerator. The purpose of the present invention is to provide an absorption-type heat pump enabling effective cooling and heating using a single device.

Description

Absorption Heat Pump [0002]

The present invention relates to an absorption type heat pump.

Absorption type heat pump is driven by heat energy such as combustion heat, steam heat, hot water heat, unlike compression type which is driven by electric power, and it requires a little electricity for cycle formation.

Such an absorption heat pump can be an effective means of recovering the summer heat power peak load suppression and waste heat.

1 is a view for explaining a general absorption type heat pump.

1, in a general absorption type heat pump, the refrigerant vapor generated by the heat supplied from the evaporator cold water is absorbed in the absorber, and the generated absorption heat is removed through the cooling water.

The diluted solution in the absorber is moved to the regenerator by the circulation pump.

The solution supplied to the regenerator is heated by the returning high temperature and high concentration solution, and the solution supplied to the regenerator is concentrated by the heating source.

The concentrated solution is supplied through the heat exchanger to the absorber at a low temperature and high concentration to form a cycle. The refrigerant vapor generated in the regenerator is condensed into liquid phase by the cooling water in the condenser, and the condensed refrigerant is supplied to the evaporator through the expansion device.

2 is an absorption type heat pump heating and cooling duing line.

Referring to FIG. 2, temperature, pressure, and concentration conditions varying in the cooling operation and the heating operation of the absorption type heat pump can be known.

As shown in FIG. 2, when the absorption type heat pump is changed to the heating operation, the concentration of the refrigerant becomes thin and the temperature and the pressure increase. When the solution and the coolant are initially sealed based on the heating operation standard, the desired design conditions can not be satisfied when switching to the cooling operation, so that the performance is reduced.

For this reason, devices that simultaneously perform cooling and heating operations with a single device have not been commercialized.

An object of the present invention is to provide an absorption type heat pump capable of effectively performing both cooling operation and heating operation as a single unit.

The absorption type heat pump according to the present invention includes a regenerator for separating the refrigerant vapor by heating the refrigerant liquid, a condenser for condensing and liquefying the refrigerant vapor transferred from the regenerator, an evaporator for evaporating the refrigerant liquid transferred from the condenser, And an absorber for absorbing the refrigerant vapor transferred from the evaporator and supplying the refrigerant to the regenerator.

Also, the refrigerant liquid controller may adjust the supply amount of the refrigerant in the process from the transfer of the refrigerant liquid from the condenser to the discharge of the refrigerant liquid from the evaporator.

The apparatus may further include a first body on which the condenser and the regenerator are installed, and a second body on which the evaporator and the absorber are installed, wherein the first body includes a first compartment dividing a condensation space and a regeneration space, The two bodies may include a second compartment for partitioning the evaporation space and the absorption space.

Further, the evaporator may include a first injector installed in the evaporation space and injecting the refrigerant liquid, and the absorber may include a second injector installed in the absorption space and injecting the refrigerant liquid, May adjust the supply amount of the refrigerant supplied to the first injector.

Further, the refrigerant liquid control unit may increase the supply amount of the refrigerant liquid in the heating operation mode and decrease the supply amount of the refrigerant liquid in the cooling operation mode.

The refrigerant liquid control unit may include a refrigerant storage compartment, a float part installed in the refrigerant storage compartment, and a diaphragm to prevent the float part from flowing, a control valve for controlling the flow rate of the refrigerant liquid, And a control unit for controlling the control valve according to the position of the float part.

The refrigerant supply device according to claim 1, further comprising a refrigerant supply pipe for supplying the refrigerant liquid from the condenser to the evaporator, wherein the refrigerant supply pipe has a common portion, one side of which is connected to the evaporation space, Two portions, and the first portion and the second portion may be connected to the condensing space, respectively.

In addition, the height of the inlet of the first portion and the height of the inlet of the second portion in the condensing space may be different from each other.

The controller may further include a controller for selectively activating one of the first portion and the second portion in accordance with the operation mode.

Further, the maximum amount of the refrigerant liquid that can be stored in the condensing space in the state where the first portion is activated may be different from the maximum amount of the refrigerant liquid that can be stored in the condensing space in the activated state of the second portion .

The absorption type heat pump according to the present invention can effectively perform both the cooling operation and the heating operation by increasing the supply amount of the refrigerant liquid in the heating operation mode and decreasing the supply amount of the refrigerant liquid in the cooling operation mode, There is an effect that the efficiency of operation can be kept sufficiently high.

1 is a view for explaining a general absorption type heat pump;
FIG. 2 is an absorption type heat pump cooling / heating duing line; FIG.
3 is a view for explaining a configuration of an absorption type heat pump according to the present invention;
4 is a schematic view for explaining the function of the refrigerant liquid control unit;
5 is a view for explaining a configuration of a refrigerant liquid control unit;
FIGS. 6 to 8 are views for explaining the operation of the coolant liquid control unit; FIG. And
9 to 11 are views for explaining another method of controlling the amount of refrigerant liquid.

Hereinafter, an absorption type heat pump according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a view for explaining a configuration of an absorption type heat pump according to the present invention.

3, the absorption type heat pump 10 according to the present invention includes a regenerator 120 for separating refrigerant vapor by heating a refrigerant liquid, a condenser 110 for condensing and liquefying the refrigerant vapor delivered from the regenerator 120, An evaporator 210 for evaporating the refrigerant liquid transferred from the condenser 110, a refrigerant liquid adjusting unit 400 for adjusting the supply amount of the refrigerant liquid, a refrigerant vapor absorbed by the evaporator 210, And an absorber 220 for supplying a refrigerant liquid.

Here, as the refrigerant liquid, an aqueous solution of lithium bromide (LiBr) may be used. When lithium bromide (LiBr) absorbs moisture, the concentration of lithium bromide in the refrigerant liquid is lowered. Thus, a refrigerant liquid having a relatively low concentration of lithium bromide can be referred to as a dilute solution. On the other hand, if the refrigerant liquid is heated, moisture may evaporate from the refrigerant liquid to increase the concentration of lithium bromide. Thus, the refrigerant liquid having a relatively high concentration of lithium bromide can be referred to as a concentrated liquid.

The condenser 110 and the regenerator 120 may be installed in the first body 100 and the evaporator 210 and the absorber 220 may be installed in the second body 200.

The first body 100 and the second body 200 may be separately provided. Of course, it is also possible that the first body 100 and the second body 200 are integrally formed.

The first body 100 includes a first compartment 130 that defines a condensation space for the condenser 110 and a regeneration space for the regenerator 120. The second body 200 includes an evaporator 210, And a second compartment 250 for partitioning the evaporation space for the absorber 220 and the absorption space for the absorber 220.

That is, the first body 100 is partitioned by the first partition 130 into a condensation space and a regeneration space, and the second body 200 is partitioned by the second partition 250 into an evaporation space and an absorption space, .

The evaporator 210 may further include a first injector 230 installed in the evaporation space and injecting the refrigerant. The first injector 230 may be installed at an upper portion of the evaporation space for the injection efficiency.

The absorber 220 may further include a second injector 240 installed in the absorption space and injecting the refrigerant liquid. The second injector 240 may be installed above the absorption space for injection efficiency.

The regenerator 120 can pass through the first pipe 710. One side of the first pipe 710 is a hot water inlet, and the other side of the first pipe 710 is a hot water outlet.

In the heating operation mode, hot water supplied to the regenerator 120 through the first pipe 710 can be supplied by a drive heat source (main heat source). The driving heat source may be a boiler or an engine. That is, the regenerator 120 can use steam or hot water discharged from a boiler, an engine, or the like.

Hereinafter, the absorption type heat pump according to the present invention will be described as an example of operating in the heating operation mode, but the absorption type heat pump according to the present invention may also be operated in the cooling operation mode.

In the regenerator 120, a refrigerant liquid (diluting solution) supplied from the absorber 220 through the second pump 520 and the fourth pipe 740, in detail, is supplied through the first pipe 710 The hot water can be heated. Accordingly, in the regenerator 120, the refrigerant vapor can be separated from the refrigerant liquid. That is, moisture can be separated from the refrigerant liquid.

The refrigerant vapor separated from the low-concentration refrigerant liquid in the regenerator 120 may flow into the condenser 110 and be cooled / condensed. The refrigerant vapor may then be liquefied and stored in the lower portion of the condenser 110.

The third pipe 730 can pass through the condenser 110. The third pipe 730 may pass through the condenser 110 after passing first through the absorber 220. Accordingly, the cooling water supplied from one side of the third pipe 730 can pass through the absorber 220 and the condenser 110 in order.

The refrigerant liquid stored in the lower portion of the condenser 110 may be supplied to the evaporator 210 through the refrigerant supply pipe 700.

The refrigerant supplied to the evaporator 210 through the refrigerant supply pipe 700 is stored in the lower portion of the evaporator 210 and is supplied to the evaporation space through the eighth pipe 780 by the first pump 510 May be supplied to the first injector 230 and sprayed in the evaporation space.

The second pipe 720 can pass through the evaporator 210.

The cold water supplied from one side of the second pipe 720 may be discharged to the other side of the second pipe 720 through the evaporator 210.

On the other hand, the refrigerant liquid (concentrated solution) in which the refrigerant vapor is separated by the regenerator 120 and the concentration is increased can be supplied to the absorber 220 through the sixth pipe 760 and the third pump 530.

The refrigerant liquid supplied to the absorber 220 may be supplied to the second injector 240 installed in the absorption space and sprayed in the absorption space.

A heat exchanger 300 may be installed in the sixth pipe 760.

In the heat exchanger 300, the fourth pipe 740 through which the dilution solution passes can pass through. Thus, heat exchange can be achieved between a relatively hot hot concentrated solution and a relatively cold hot solution.

As a result, the concentrated solution can be supplied to the absorber 220 at a lowered temperature. Accordingly, when the concentrated solution is sprayed by the second injector 240, the absorption efficiency of the refrigerant vapor from the evaporator 210 can be improved. In addition, since the diluting solution can be supplied to the regenerator 120 at a high temperature, the refrigerant vapor can be more easily separated.

The operation of the absorption type heat pump according to the present invention having such a structure in the heating operation mode will be summarized as follows.

In the heating operation mode, for example, water vapor discharged from a boiler or an engine is supplied to the first pipe 710, and heat source water (cold water during cooling operation) may be supplied to the second pipe 720.

During the heating operation, the dilution solution in the regenerator 120 is heated by the water vapor supplied to the first pipe 710 as described above, whereby the refrigerant vapor can be separated from the dilution solution.

The refrigerant vapor separated from the regenerator 120 flows into the neighboring condenser 110 and dissipates heat to the hot water flowing through the third pipe 730 in the condenser 110 to become a refrigerant liquid, 110). ≪ / RTI >

The refrigerant liquid stored in the lower part of the condenser 110 is supplied to the evaporator 210 through the refrigerant supply pipe 700 and is supplied to the first injector 230 and may be sprayed toward the second pipe 720.

The sprayed refrigerant liquid can take the heat from the heat source water flowing in the second pipe 720 and evaporate and become refrigerant vapor and flow into the adjacent absorber 220.

The refrigerant vapor introduced into the absorber 220 can be absorbed into the concentrated solution injected from the second injector 240. Accordingly, the refrigerant liquid absorbing the refrigerant vapor and becoming the diluted solution can be stored in the lower portion of the absorber 220.

The diluted solution stored in the lower part of the absorber 220 may be supplied to the regenerator 120 through the fourth pipe 740 by the second pump 520. The solution is warmed by the heat exchange performed in the heat exchanger 300 in the process of being supplied from the absorber 220 to the regenerator 120 and can be returned to the regenerator 120.

In this process, the refrigerant liquid and the water circulate, and the hot water passing through the third pipe 730 can be heat-exchanged with the refrigerant vapor absorbed in the concentrated solution in the course of passing through the absorber 220, And then exchanges heat with the refrigerant vapor supplied from the regenerator 120 in the course of passing through the condenser 110, so that the temperature further rises and is supplied to a load such as an unillustrated indoor unit and used as a heat source for heating.

The hot water that has undergone the heat exchange by the load and is lowered in temperature can be discharged from the load and returned to the inlet side of the third pipe 730 through a circulation circuit (not shown).

The cycle principle applied to this absorption type heat pump is the same as the case of the heating operation and the cooling operation. However, in the cooling operation, the temperature condition of the evaporator, the absorber and the condenser is lowered compared with the heating operation, It is used as cooling water. The supplied heat source may be the same under cooling and heating conditions.

The controller 600 may control the overall operation of the absorption heat pump 10 according to the present invention. For example, the control unit 600 may control the operation of at least one of the first pump 510, the second pump 520, and the third pump 530.

In addition, the controller 600 may control at least one of the first to 9th valves V1 to V9. The first to ninth valves V1 to V9 can control the supply of refrigerant liquid or water through on / off operation.

Meanwhile, the absorption type heat pump 10 according to the present invention may further include a refrigerant liquid adjustment unit 400. The refrigerant liquid control unit 400 may adjust the supply amount of the refrigerant in the process from the transfer of the refrigerant liquid from the condenser 110 to the evaporator 210 until the refrigerant liquid is injected into the evaporation space.

The coolant liquid control unit 400 may control the supply amount of the coolant supplied to the first injector 230 installed in the evaporation space.

In other words, the refrigerant liquid control unit 400 can control the amount of the refrigerant liquid stored in the evaporation space.

In other words, the refrigerant liquid adjusting unit 400 can adjust the refrigerant liquid level of the evaporator 210.

The refrigerant liquid control unit will be described in more detail below.

FIG. 4 is a schematic view for explaining the function of the refrigerant liquid control unit, FIG. 5 is a view for explaining the configuration of the refrigerant liquid control unit, and FIGS. 6 to 8 are views for explaining the operation of the refrigerant liquid control unit to be. In the following, the description of the parts described above can be omitted.

4, the coolant control unit 400 may increase the supply amount of the coolant liquid in the heating operation mode and reduce the supply amount of the coolant liquid in the cooling operation mode.

Accordingly, the absorption heat pump 10 according to the present invention can be effectively operated in the cooling operation mode and the heating operation mode, respectively, and the cooling and heating operation efficiency can be maintained at a sufficiently high level.

As described above, if the supply amount of the refrigerant liquid in the heating operation mode is increased and the supply amount of the refrigerant liquid in the cooling operation mode is reduced, the heating and cooling operation can all be effective.

Referring to the prior art diagram of FIG. 2, when changing from an absorption type heat pump to heating operation, a dilute concentration refrigerant is required, while a dark concentration refrigerant may be required during cooling operation.

The refrigerant liquid control unit 400 is connected to the refrigerant storage compartment 410 and the refrigerant storage compartment 400 so that the absorption heat pump 10 according to the present invention can obtain a sufficiently high efficiency in both the heating operation and the cooling operation, A float part 420 to be installed, and a diaphragm 430 that prevents the float part 420 from flowing.

In addition, the coolant control part 400 may further include a guide part 440 for preventing the float part 420 from being separated. The float portion 420 can move up and down along the guide portion 440.

The control unit 600 may control the regulating valve for regulating the flow rate of the refrigerant liquid according to the position of the float part 420. [ Here, the control valve may be the ninth valve V9 in FIG.

To prevent corrosion of the float portion 420, the refrigerant storage compartment 410 may be filled with nitrogen. At least a part of the refrigerant storage compartment 410 may be made of a transparent material so that the visual inspection of the float part 420 can be performed.

When it is necessary to increase the supply amount of the refrigerant liquid, for example, in the heating operation mode, the float portion 420 can be controlled to be located at the lower portion in the refrigerant storage compartment 410 as in the case of FIG. 6A. For example, the control unit 600 may open the ninth valve V9 as much as possible to reduce the refrigerant liquid stored in the refrigerant storage compartment 410.

In this case, as in the case of FIG. 7, the amount of refrigerant remaining in the evaporation space of the second body 200 may be relatively small. In FIG. 7, the amount of the refrigerant liquid is indicated by a red dotted line.

In other words, in the heating mode, the control unit 600 controls the refrigerant liquid control unit 400 to reduce the amount of the refrigerant liquid stored in the evaporation space, thereby increasing the amount of the refrigerant liquid circulated.

On the other hand, when it is necessary to reduce the supply amount of the refrigerant liquid, for example, in the cooling operation mode, it is possible to control the float part 420 to be located at the upper part in the refrigerant storage compartment 410, as in the case of FIG. 6B. For example, the control unit 600 may reduce the aperture ratio of the ninth valve V9 so that a sufficiently large amount of refrigerant can be stored in the refrigerant storage compartment 410. [

In this case, as in the case of FIG. 8, the amount of refrigerant remaining in the evaporation space of the second body 200 may be relatively large. In FIG. 8, the amount of the refrigerant liquid is indicated by a red dotted line.

In other words, in the cooling mode, the controller 600 controls the refrigerant liquid control unit 400 to increase the amount of the refrigerant liquid stored in the evaporation space, thereby reducing the amount of circulating refrigerant.

For this operation, the coolant liquid control unit 400 can transmit information on the position of the float part 420 to the control unit 600. [

The coolant control unit 400 may use the guide unit 440 and the float part 420 to obtain information on the position of the float part 420. [ For example, a switch may be provided in a predetermined portion (e.g., upper, middle, and lower portions) of the guide portion 440, and as the float portion 420 moves, ) On / off.

Alternatively, a switch may be provided at the top and / or bottom of the refrigerant storage compartment 410. In this case, when the refrigerant liquid is filled in the refrigerant storage compartment 410 and the float part 420 is moved upward, the switch installed on the upper part of the refrigerant storage compartment 410 and the float part 420 come into contact with each other, . Alternatively, it is also possible that the coolant stored in the coolant compartment 410 is reduced and the switch installed at the lower portion of the coolant storage compartment 410 is connected to the float 420 to generate a control signal.

The method of transmitting information on the position of the float part 420 to the control unit 600 may not be limited to the above description. For example, the float part 420 may include a sensor such as a gyro sensor, and it may be possible to transmit the positional information to the control part 600 in accordance with the positional change of the float part 420. [

Alternatively, the refrigerant liquid control unit 400 may be used to maintain the amount of the refrigerant liquid stored in the evaporation space at a certain level.

For example, suppose that the lowest position of the float portion 420 is '0' and the highest position is '100'. Here, it is assumed that the position of the float portion 420 is maintained between '40' and '60' by adjusting the amount of the refrigerant liquid stored in the evaporation space.

In this case, when the position of the float part 420 is lowered to '40' or less, the controller 600 reduces the opening ratio of the ninth valve V9 to reduce the amount of the refrigerant liquid exiting the evaporation space, Quot; 40 " or more. On the other hand, if the position of the float part 420 is higher than '60', the control part 600 increases the opening ratio of the ninth valve V9 to increase the amount of the refrigerant liquid that exits the evaporation space, Quot; 60 " or less.

9 to 11 are views for explaining another method of controlling the amount of refrigerant liquid. In the following, the description of the parts described above may be omitted.

9, the refrigerant supply pipe 700 for supplying the refrigerant liquid from the condenser 110 to the evaporator 210 includes a common portion 700C having one side connected to the evaporation space of the evaporator 210, And may include a first portion 700A and a second portion 700B which are divided at the other end.

Here, the first portion 700A and the second portion 700B may be connected to a condensing space corresponding to the condenser 110, respectively.

In FIG. 9, a configuration in which one end of the common portion 700C is connected to the evaporator 210 is not shown. 3, one end of the refrigerant supply pipe 700 is connected to the evaporator 210 and the other end thereof is connected to the condenser 110, and one end of the common portion 700C is connected to the evaporator 210 Can be deduced.

The height of the inlet of the first part 700A and the height of the inlet of the second part 700B may be different in the condensing space provided in the first body 100. [

For example, weir 700D may be installed at the entrance of first portion 700A. The ware 700D may be the inlet of the first portion 700A. And may be installed inside the condensing space of the first body 100 of the ware 700D.

In order for the refrigerant liquid stored in the condensing space to be supplied to the evaporator 210 through the first portion 700A, the refrigerant liquid must flow over the ware 700D installed in a part of the first portion 700A. In other words, the refrigerant liquid can be supplied to the evaporator 210 through the first portion 700A only if the height of the refrigerant liquid stored in the condensing space is higher than the height of the ware 700D.

When the refrigerant liquid stored in the condensing space is supplied to the evaporator 210 through the second portion 700B, since the height of the inlet of the second portion 700B is relatively low, the refrigerant liquid stored in the condensing space This is possible if the amount is relatively small.

A second portion 700B is provided for selecting whether refrigerant liquid stored in the condensing space is supplied to the evaporator 210 through the first portion 700A or to the evaporator 210 through the second portion 700B A tenth valve V10 may be provided.

The tenth valve (V10) may be operated under the control of the control unit (600).

When the tenth valve V10 is locked or deactivated under the control of the controller 600, the second portion 700B is clogged as in the case of Fig. 10A, and thus the refrigerant liquid stored in the condensing space And may be supplied to the evaporator 210 only through the first portion 700A.

In this case, since the height of the refrigerant liquid stored in the condensing space is higher than the height of the ware 700D, the refrigerant can be supplied to the evaporator 210 through the first portion 700A, 700D can be maintained in a state in which a sufficient amount of the refrigerant liquid is stored.

This case corresponds to a case where the amount of circulating refrigerant liquid is relatively small, and may correspond to the cooling operation mode.

When the tenth valve V10 is locked (inactivated), it can be considered that the first portion 700A is activated when the second portion 700B is locked (inactivated).

When the tenth valve V10 is opened or activated under the control of the controller 600, the first portion 700A is opened as in the case of FIG. 10B, and thus the refrigerant liquid stored in the condensing space 2 portion 700B to the evaporator 210. [0033] In this case, if a sufficient amount of refrigerant liquid is stored in the condensing space, the refrigerant liquid can be supplied to the evaporation space through the first portion 700A as well as the second portion 700B.

In this case, since the refrigerant liquid stored in the condensing space can be supplied to the evaporator 210 through the inlet of the second portion 700B having a relatively low height, a relatively small amount of the refrigerant liquid is stored in the condensing space State can be maintained.

Such a case may correspond to a case where the amount of circulating refrigerant liquid is relatively large, and may correspond to a heating operation mode.

As such, the maximum amount of refrigerant liquid that can be stored in the condensing space in the state where the first portion 700A is activated and the second portion 700B is shut off is stored in the condensing space in the state where the second portion 700B is activated Can be different from the maximum amount of refrigerant liquid that can be. Preferably, the maximum amount of refrigerant liquid that can be stored in the condensing space in the activated state of the first portion 700A is greater than the maximum amount of refrigerant liquid that can be stored in the condensing space in the activated state of the second portion 700B Can be many.

When the tenth valve V10 is opened (when activated), the second portion 700B is opened (when activated). In this case, it may be considered that the first portion 700A is inactivated although the first portion 700A is not closed.

In consideration of this, the controller 600 may select one of the first portion 700A or the second portion 700B to be activated according to the operation mode.

Referring to the operation of the tenth valve V10 according to the operation mode, the tenth valve V10 can be turned on in the heating mode and off in the cooling mode as shown in FIG.

As described above, the amount of the refrigerant circulated through the refrigerant control unit 400, the first portion 700A, the second portion 700B, and the ware 700D can be adjusted. In other words, the amount of unused refrigerant liquid can be adjusted.

Accordingly, it is possible to effectively perform both the heating and cooling operation, and the efficiency thereof can be maintained at a sufficiently high level.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Claims (7)

A regenerator for separating the refrigerant vapor by heating the refrigerant liquid; A condenser for condensing and liquefying the refrigerant vapor delivered from the regenerator; An evaporator for evaporating the refrigerant liquid transferred from the condenser; A refrigerant liquid adjusting unit for adjusting a supply amount of the refrigerant liquid; An absorber for absorbing the refrigerant vapor transferred from the evaporator and supplying the refrigerant to the regenerator; A first body on which the condenser and the regenerator are installed; And a second body on which the evaporator and the absorber are installed, the first body including a first compartment for partitioning a condensation space and a regeneration space; And the second body includes a second compartment for partitioning the evaporation space and the absorption space, wherein the evaporator includes a first injector installed in the evaporation space and injecting the refrigerant liquid, And a second injector installed in the space for spraying the refrigerant liquid, wherein the coolant liquid controller adjusts a supply amount of the coolant supplied to the first injector,
Wherein the refrigerant liquid control unit increases the supply amount of the refrigerant liquid in the heating operation mode, decreases the supply amount of the refrigerant liquid in the cooling operation mode,
A refrigerant storage compartment provided in the second body, the refrigerant storage compartment being connected to a refrigerant storage part provided at a lower portion of the evaporator; A float part installed in the refrigerant storage compartment; A diaphragm for preventing the float portion from flowing; A regulating valve for regulating a flow rate of the refrigerant liquid; And a control unit for controlling the control valve according to a position of the float portion,
Further comprising: a refrigerant supply pipe for supplying the refrigerant liquid from the condenser to the evaporator, wherein the refrigerant supply pipe has a common portion, one side of which is connected to an evaporation space inside the evaporator; And a first portion and a second portion that are divided at the other end of the common portion, wherein the first portion and the second portion are each connected to a condensation space inside the condenser,
The height of the inlet of the first part and the height of the inlet of the second part in the condensing space are different from each other,
Wherein the controller selectively activates one of the first portion and the second portion according to an operation mode,
The maximum amount of the refrigerant liquid that can be stored in the condensing space in the activated state of the first portion is different from the maximum amount of the refrigerant liquid that can be stored in the condensing space in the activated state of the second portion, . delete delete delete delete delete delete

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