KR102292401B1 - Absorbed chiller and the control method thereof - Google Patents

Abstract

A chiller according to an embodiment of the present invention includes: an evaporator having a refrigerant injection unit for injecting a refrigerant, and exchanging heat with the refrigerant injected through the refrigerant injection unit and cold water; an absorber through which a gaseous refrigerant is supplied from the evaporator, and through which cooling water passes; a first regenerator for heating the absorbent liquid supplied from the absorber; a condenser to which the gaseous refrigerant generated in the first regenerator is supplied and through which the cooling water passes; a second regenerator for heating the low-concentration absorbent liquid discharged from the absorber to generate a medium-concentration absorbent liquid and discharging it to the first regenerator; and a control module for simultaneously controlling the flow rates of the raw material applied to the second regenerator and the low concentration absorption liquid. Therefore, it is possible to design the circulation amount to be controlled according to the heat input amount of the high-temperature regenerator. In addition, the amount of circulation can be controlled together using the damping motor that controls the amount of fuel and air. By controlling the damping motor through an algorithm that links the amount of heat input and the amount of circulation together, the control factors in the inverter and microcomputer are reduced, thereby reducing costs and improving convenience. is improved

Description

ABSORBED CHILLER AND THE CONTROL METHOD THEREOF

The present invention relates to an absorption chiller, and more particularly, to an absorption chiller capable of controlling the circulation amount according to the operation of a high-temperature regenerator.

The absorption chiller is a device for cooling the cold water by exchanging the refrigerant and the cold water without a separate compressor.

1 is a schematic view of a general absorption chiller (1).

Referring to Figure 1, the conventional absorption iron (1) is an evaporator (2) for exchanging refrigerant and cold water, an absorber (3) for absorbing the gaseous refrigerant evaporated in the evaporator (2) through an absorbent liquid, the absorber (3) and a regenerator (4) for separating the gaseous refrigerant from the absorption liquid supplied from the regenerator (4), and a condenser (5) for condensing the gaseous refrigerant by exchanging heat with the gaseous refrigerant separated in the regenerator (4) and cooling water.

The evaporator 2 and the absorber 3 may be implemented through a single shell, and the regenerator 4 and the condenser 5 may also be implemented through a single shell.

The cycle of the absorption chiller 1 will be described as follows.

The low-concentration absorption liquid (ie, the absorption liquid containing a relatively large amount of gaseous refrigerant) from the absorber 3 is supplied to the regenerator 4 through the low-concentration pipe 3'.

When the low-concentration absorption liquid is heated in the regenerator 4, the gaseous refrigerant is separated from the low-concentration absorption liquid. The high-concentration absorption liquid from which the gaseous refrigerant is separated (ie, the absorption liquid containing relatively little gas-phase refrigerant) is supplied back to the absorber 3 through the high-concentration pipe 4'.

A cooling water pipe 7 passes into the absorber 3, and the cooling water pipe 7 lowers the temperature in the absorber 3 to increase the absorption efficiency of the gaseous refrigerant by the absorber.

The gaseous refrigerant separated from the low-concentration absorption liquid in the regenerator 4 is supplied to the condenser 5 provided at one side of the regenerator 4 .

The condenser 5 is formed to condense the gaseous refrigerant by exchanging heat with the gaseous refrigerant and cooling water.

For example, a cooling water pipe 6 passes into the condenser 5 , and the cooling water pipe 7 exchanges heat with the gaseous refrigerant in the condenser 5 .

The liquid refrigerant condensed in the condenser 5 is supplied to the evaporator 2 through the high-pressure pipe 5 ′, and the liquid refrigerant and cold water exchange heat in the evaporator 2 .

For example, a cold water pipe 6 passes into the evaporator 2 , and the cold water pipe 6 and the liquid refrigerant exchange heat to cool the cold water.

The gaseous refrigerant generated by evaporation of the liquid refrigerant in the evaporator 2 is supplied to the absorber 3 on one side of the evaporator 2 .

Between the evaporator (2) and the absorber (3), the gaseous refrigerant from the evaporator (2) is supplied to the absorber (3), and the absorption liquid in the absorber (3) is not supplied to the evaporator (2) An eliminator 9 may be provided.

That is, the eliminator 9 passes the gaseous refrigerant generated in the evaporator 2 toward the absorber 3 and prevents the absorption liquid supplied to the absorber 3 from flowing into the evaporator 2 . can be formed to

Such an absorption chiller further includes a high-temperature regenerator that increases the temperature of the absorption liquid injected into the regenerator and sends it to the regenerator.

Such a high-temperature regenerator includes a separate valve to control the amount of the applied circulating fluid, and a motor for opening and closing the corresponding valve.

A technique for controlling an inverter frequency for driving such a motor is disclosed in Korean Patent No. 10-2008-0036505.

In this prior art, the amount of circulating fluid is adjusted by controlling the frequency of the inverter according to the measurement of the inlet temperature of the cooling water and the temperature of the high-temperature asher.

However, each inverter frequency control algorithm must be programmed according to product groups and driving conditions, and it is impossible to set all control algorithms according to product groups. In addition, when applying such an algorithm to different driving conditions of other product groups, it may be difficult to control the optimal circulation amount.

In addition, an increase in cost due to the provision of a separate inverter for the circulating fluid is also a problem.

Korean Patent 10-2008-0036505 (published on 28.04.2008)

The absorption liquid pump of the conventional absorption chiller has a problem of cost by controlling the circulation amount with an inverter. The first object to be solved by the present invention is to provide an absorption chiller designed to control the circulation amount according to the heat input amount of the high-temperature regenerator. .

At this time, the amount of heat input of the high-temperature regenerator is controlled by the damping motor on the burner side to control the amount of fuel and air.

A second object of the present invention is to provide an absorption chiller capable of controlling the circulation amount together by using a damping motor that controls the fuel and air amounts.

In addition, a third object of the present invention is to provide an absorption chiller that reduces cost and improves convenience by reducing control factors in the inverter and the microcomputer by controlling the damping motor through an algorithm that links the amount of heat input and the amount of circulation together.

In order to achieve the above object, an evaporator having a refrigerant injection unit for injecting a refrigerant, and exchanging heat with the refrigerant injected through the refrigerant injection unit and cold water; an absorber through which a gaseous refrigerant is supplied from the evaporator, and through which cooling water passes; a first regenerator for heating the absorbent liquid supplied from the absorber; a condenser to which the gaseous refrigerant generated in the first regenerator is supplied and through which the cooling water passes; a second regenerator for heating the low-concentration absorbent liquid discharged from the absorber to generate a medium-concentration absorbent liquid and discharging it to the first regenerator; and a control module for simultaneously controlling the flow rates of the raw material applied to the second regenerator and the low-concentration absorption liquid.

On the other hand, the embodiment is provided with a refrigerant injection unit for injecting a refrigerant, the evaporator for exchanging heat with the refrigerant and cold water injected through the refrigerant injection unit; an absorber through which a gaseous refrigerant is supplied from the evaporator, and through which cooling water passes; a first regenerator for heating the absorbent liquid supplied from the absorber; A method of controlling an absorption chiller comprising a condenser through which the gaseous refrigerant generated in the regenerator is supplied and cooling water passes through, and a second regenerator that heats the low-concentration absorption liquid from the absorber to generate a medium-concentration absorption liquid and discharges it to the first regenerator. calculating heat input information for the absorption chiller; calculating a flow rate of the low-concentration absorption liquid introduced into the second regenerator corresponding to the amount of heat input; and flowing the low-concentration absorption liquid to the second regenerator according to the calculated flow rate of the low-concentration absorption liquid.

Through the above solution, it is possible to design the circulation amount to be controlled according to the heat input amount of the high-temperature regenerator. In addition, the amount of circulation can be controlled together using the damping motor that controls the amount of fuel and air. By controlling the damping motor through an algorithm that links the amount of heat input and the amount of circulation together, the control factors in the inverter and microcomputer are reduced, thereby reducing costs and improving convenience. is improved

1 is a view showing a conventional absorption chiller.
2 is a view showing an absorption type chiller according to the present invention.
3 is a view showing the high-temperature regenerator shown in FIG.
4 is an enlarged configuration diagram of the high-temperature regenerator of FIG. 3 .
5 is a flowchart illustrating an operation of the chiller performing the absorption liquid circulation control of FIG. 3 .
6 is a view showing the flow of the absorbent liquid when the absorbent liquid circulation control of FIG. 5 is applied.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" means that a referenced component, step and/or action excludes the presence or addition of one or more other components, steps and/or actions. I never do that.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

In the drawings, the thickness or size of each component is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size and area of each component do not fully reflect the actual size or area.

In addition, angles and directions mentioned in the process of describing the structure of the embodiment are based on those described in the drawings. In the description of the structure constituting the embodiment in the specification, if the reference point for the angle and the positional relationship are not clearly mentioned, reference is made to the related drawings.

2 is a view showing an absorption chiller according to the present invention, FIG. 3 is a view showing the high-temperature regenerator shown in FIG. 2, and FIG. 4 is an enlarged configuration diagram of the high-temperature regenerator of FIG. 3 .

2, the absorption chiller 10 according to the present invention is an evaporator 200 for exchanging a refrigerant (eg, water) and cold water, an absorber 300 to which a gaseous refrigerant is supplied from the evaporator 200, It may include a regenerator 400 for heating the absorbent liquid supplied from the absorber 300 and a condenser 500 to which the gaseous refrigerant generated in the regenerator 400 is supplied.

The evaporator 200 and the absorber 300 may be implemented as a single shell, and the regenerator 400 and the condenser 500 may also be implemented as a single shell.

The evaporator 200 may include a refrigerant pump 251 for pressurizing the refrigerant therein, and a refrigerant injection unit 252 for injecting the refrigerant pressurized by the refrigerant pump 251 .

Specifically, the liquid refrigerant supplied from the condenser 500 through the high-pressure pipe 550 may be accommodated in the evaporator 200 . The liquid refrigerant contained in the evaporator 200 is pressurized by the refrigerant pump 251 provided at the lower end of the evaporator 200 , and is guided to the upper part of the evaporator 200 through the circulation line 250 .

The liquid refrigerant guided to the upper part of the evaporator 200 through the circulation line 250 may be injected into the evaporator 200 through the refrigerant spray unit 252 . At this time, the refrigerant spraying unit 252 may be formed to spray the liquid refrigerant in the form of fine particles.

That is, the refrigerant spraying unit 252 may be provided above the evaporator 200 . More specifically, the refrigerant injection unit 252 may be provided at an upper portion of the evaporator 200 .

A cold water pipe 600 through which cold water flows may pass through the evaporator 200 . That is, a part of the cold water pipe 600 may be disposed in the evaporator 200 .

Accordingly, the refrigerant sprayed from the refrigerant spraying unit 252 and the cold water flowing through the cold water pipe 600 exchange heat to cool the cold water. The cooled cold water may be used as a heat exchange medium in a separate air conditioner (not shown) or an indoor unit (not shown).

The absorber 300 may be formed such that a gaseous refrigerant is supplied from the evaporator 200 and an absorbent liquid is supplied through the regenerator 400 described above. The absorption liquid may be a lithium bromide (LiBr) aqueous solution.

Specifically, the gaseous refrigerant evaporated through heat exchange with cold water in the evaporator 200 may be supplied to the absorber 300 provided at one side of the evaporator 200 .

A first eliminator E1 is provided between the evaporator 200 and the absorber 300 . The first eliminator E1 may be formed to pass a gas and block a liquid. In addition, the pressure inside the evaporator 200 is higher than the pressure inside the absorber 300 .

Accordingly, the gaseous refrigerant generated in the evaporator 200 may be guided to the absorber 300 through the first eliminator E1 . The gaseous refrigerant guided to the absorber 300 may be absorbed in the absorption liquid supplied to the absorber 300 .

On the other hand, the absorbent liquid in the absorber 300 cannot be guided to the evaporator 200 by the first eliminator E1. That is, the first eliminator E1 may be formed to prevent the absorption liquid in the absorber 300 from being guided into the evaporator 200 .

A cooling water pipe 700 may pass through the absorber 300 . This is to lower the temperature in the absorber 300 because heat is generated when the absorption liquid absorbs the gaseous refrigerant.

That is, the absorption efficiency of the gaseous refrigerant by the absorption liquid may be increased by the cooling water pipe 700 passing through the absorber 300 .

An absorption liquid pump 351 may be provided at a lower end of the absorber 300 . The absorbent liquid that has absorbed the gaseous refrigerant in the absorber 300 may be guided to the regenerator 400 by driving the absorbent liquid pump 351 .

More specifically, the absorber 300 may be connected to the regenerator 400 through an absorbent liquid supply line 350 , and the absorbent liquid pump 351 may be provided on the absorbent liquid supply line 350 .

The regenerator 400 may be formed to heat the absorbent liquid supplied from the absorber 300 (hereinafter, also referred to as “low-concentration absorbent liquid”).

The regenerator 400 may be formed to heat the low-concentration absorbent liquid supplied from the absorber 300 by a heat source (eg, steam, hot water or gas, etc.) in the high-temperature regenerator 100 .

When the absorbent liquid is heated in the regenerator 400 , a gaseous refrigerant may be separated from the absorbent liquid. The gaseous refrigerant separated from the absorption liquid is guided to the condenser 500 at one side of the regenerator 400 .

In this case, a second eliminator E2 may be provided between the regenerator 400 and the condenser 500 provided on one side of the regenerator. The second eliminator E2 may be formed to pass a gas and block a liquid. In addition, the pressure inside the regenerator 400 is higher than the pressure inside the condenser 500 .

Accordingly, the gaseous refrigerant generated in the regenerator 400 may be guided to the condenser 500 through the second eliminator E2 . The gaseous refrigerant guided to the condenser 500 is condensed into the liquid refrigerant in the condenser 500 .

On the other hand, the liquid refrigerant in the condenser 500 cannot be guided to the regenerator 400 by the second eliminator E2. That is, the second eliminator E2 may be formed to prevent the liquid refrigerant in the condenser 500 from being guided into the regenerator 400 .

The absorbent liquid from which the gaseous refrigerant is separated by being heated in the regenerator 400 may be recovered to the absorber 300 through the absorbent liquid recovery line 450 . At this time, in order to recover the absorbent liquid through the absorbent liquid recovery line 450 , the absorber 300 is preferably disposed below the regenerator 400 .

One end of the absorbent liquid recovery line 450 may communicate with the regenerator 400 , and the other end of the absorbent liquid recovery line 450 may communicate with the absorber 300 .

An absorbent liquid spraying unit 452 may be provided at the other end of the absorbent liquid recovery line 450 . The absorbent liquid spraying unit 452 may be formed to spray the absorbent liquid into the absorber 300 in the form of fine particles. When the absorbent liquid is sprayed in the form of fine particles, absorption efficiency of the gaseous refrigerant by the absorbent liquid may be increased.

The absorbent liquid supply line 350 may be formed to heat exchange with the absorbent liquid recovery line 450 . Specifically, a portion of the absorption liquid supply line 350 may exchange heat with a portion of the absorption liquid recovery line 450 through the absorption liquid heat exchanger 900 .

Specifically, a portion of the absorption liquid supply line 350 and a portion of the absorption liquid recovery line 450 may pass through the absorption liquid heat exchanger 900 . That is, through the absorption liquid heat exchanger 900 , heat exchange may be performed between the low concentration absorption liquid in the absorption liquid supply line 350 and the high concentration absorption liquid in the absorption liquid recovery line 450 .

At this time, the low concentration absorption liquid in the absorption liquid supply line 350 may absorb heat, and the high concentration absorption liquid in the absorption liquid recovery line 450 may release heat.

Here, the low-concentration absorption liquid may indicate an absorption liquid in a state in which the gaseous refrigerant is absorbed by the absorber 300 , and the high-concentration absorption liquid may indicate an absorption liquid in a state in which the vapor-phase refrigerant is separated in the regenerator 400 .

By the absorption liquid heat exchanger 900 , the separation efficiency of the gaseous refrigerant from the absorbent liquid in the regenerator 400 (ie, the regeneration efficiency of the absorbent liquid) is increased, and at the same time, the absorption efficiency of the gaseous refrigerant by the absorbent liquid in the absorber 300 is increased. (that is, the absorption efficiency of the absorbent liquid) can be increased.

Meanwhile, the condenser 500 may be configured to supply the gaseous refrigerant generated by the regenerator 400 . That is, the gaseous refrigerant separated from the absorption liquid in the regenerator 400 may be supplied to the condenser 500 .

The aforementioned cooling water pipe 700 may pass through the condenser 500 . Accordingly, the gaseous refrigerant supplied into the condenser 500 may be condensed by heat exchange with the cooling water pipe 700 .

The cooling water pipe 700 may be provided to sequentially pass through the absorber 300 and the condenser 500 described above.

This is because the absorber 300 requires more cooling water than the condenser 500 .

The cooling water guided to the cooling water pipe 700 may pass through the absorber 300 and the condenser 500 and then be cooled again through a separate cooling tower (not shown).

The liquid refrigerant condensed in the condenser 500 may be guided to the evaporator 200 through the refrigerant pipe 550 . At this time, in order to guide the liquid refrigerant through the refrigerant pipe 550 , the condenser 500 may be disposed above the evaporator 200 .

On the other hand, in the high-temperature regenerator 100 of the embodiment of the present invention, as shown in FIG. 3 , the absorption liquid mixed with the absorption liquid and the refrigerant is heated by the thermal power of the gas burner 120 using city gas as a fuel, and the refrigerant is evaporated. The absorption liquid and the refrigerant are separated and transferred to the regenerator 400 .

Specifically, referring to FIGS. 3 and 4 , the low-concentration absorption liquid is discharged from the absorber 300 and passes through the absorption liquid heat exchanger 900 , and then the inlet line 800 is introduced into the high-temperature regenerator 100 , the high-temperature regenerator 100 . ) and a discharge line 850 through which the refrigerant decomposed absorption liquid is discharged and delivered to the regenerator 400 .

The high-temperature regenerator 100 includes a blower 160 for supplying air to the gas burner 120, an air supply line 133 connected thereto, and a gas supply line for supplying fuel gas to the gas burner 120 ( 132), the air supply line 133, and the intake control line 130 connected to the absorption liquid inlet line 800 to control the amount of intake from each line (132, 133, 800) to the high-temperature regenerator (100). .

Each of the supply lines 132 and 133 and the inlet line 800 is opened and closed at the intersection of the inlet control line 130 and the gas supply line 132, the air supply line 133, and the absorbent liquid inlet line 800. A valve to control the damper 135 is formed at the same time.

In addition, the embodiment of the present invention includes a damping motor 140 for simultaneously controlling the opening and closing of each valve of the inlet control line 130 , and controls the damping motor 140 , and the absorption chiller 10 ) includes a control unit 150 for controlling the overall operation.

As such, the damper (valve) 135 disposed in the inlet control line 130 passes through each of the supply lines 132 and 133 and the inlet line 800 while varying the inclination by driving the damping motor 140 . control the flow.

The control unit 150 controls the opening and closing of the absorption liquid inlet line 800 in conjunction with the amount of heat input of the high-temperature regenerator 100 , that is, the opening and closing amounts of the gas supply line 132 and the air supply line 133 . The amount of circulation is also adjustable.

The opening/closing amount of the three valves on the intake control line 130, that is, the slope of the damper 135, is programmed with an algorithm in the control unit 150, and the amount of circulation according to the amount of heat input is simultaneously controlled according to the algorithm.

The control unit 150 includes an MPU (microprocessor unit), a ROM that stores programs, etc., a RAM that stores data such as the amount of heat input for control commands, the flow rate of gas, air, and absorption liquid, and an input/output interface as a communication means. It is provided to control the operation of the absorption chiller (10).

The high-temperature regenerator 100 is connected to the gas supply line 132, and a blower 160 for blowing air into the gas burner 120 and an igniter (not shown) for igniting the gas of the gas burner 120 are provided. may include more.

Hereinafter, the driving of the absorption chiller 10 according to the embodiment of the present invention will be described with reference to FIGS. 5 and 6 .

5 is a flowchart illustrating an operation of the chiller performing the absorption liquid circulation control of FIG. 3 , and FIG. 6 is a diagram illustrating the flow of the absorbent liquid when the absorption liquid circulation control of FIG. 5 is applied.

First, the control unit 150 calculates the open amount of the damper 135 according to the calorie value required at the current time of the absorption chiller 10 of the present invention (S10).

Such an open amount of the damper 135 may be already calculated in the control unit 150, and accordingly, the circulation amount of the absorbent liquid is also calculated.

Such a calculated value may be linked to the pump flow rate of the absorbent pump 351 .

At this time, the open amount may be tabled according to the heat input amount of the burner 120 as follows.

state fuel supply air supply heat input circulation Damper open amount One 10 l/h 10 l/h 450 kcal/h 10 l/h 20% 2 10 l/h 15 l/h 500 kcal/h 15 l/h 25% 3 20 l/h 20 l/h 700 kcal/h 20 l/h 40% 4 30 l/h 30 l/h 900 kcal/h 30 l/h 60%

The control unit 150 calculates a desired amount of heat input according to the applied control command, and reads the fuel supply amount, the air supply amount, and the absorption liquid circulation amount accordingly. At this time, the most approximate damper open amount is derived from the above table, and when the exact numerical value is not tabled, the corresponding open amount can be calculated by applying the approximate method (S20). As such, the damper corresponding to the desired heat input amount When the open amount is calculated, the control unit 150 drives the damping motor 140 according to the corresponding damper open amount to rotate the shaft of the inlet control line 130 .

As the inclination of the damper 135 is changed by such rotation, the flow rates of gas, air, and absorption liquid flowing through each line are changed (S30).

At this time, the control unit 150 may read the flow rate flowing through each line, and it is possible to compare whether such a flow rate matches the flow rate of Table 1 above.

In this way, while driving one damper motor 140, the flow rate flowing through each of the inlet lines 132, 133, and 800 is increased by simultaneously controlling the circulating amounts of gas, air, and absorption liquid according to the change in the slope of the damper 135 interlocked therewith. controllable at the same time.

As such, when the damper 135 is opened, the separation of the absorbent liquid circulated in the high-temperature regenerator 100 is started, and the absorption chiller 10 is smoothly driven to generate cooled cold water, and drives normally (S40).

That is, the absorption chiller 10 is a cooling operation that takes out cold water from the outlet of the cold water pipe 600 , the cooling water is introduced, and as shown in FIG. 6 , the gas burner 120 is ignited and circulated in the high temperature regenerator 100 . When the absorbed liquid is heated, a refrigerant vapor separated by evaporation from the absorbent liquid and an intermediate absorbent liquid in which the concentration of the absorbent liquid is increased by separating the refrigerant vapor is obtained.

The high-temperature refrigerant vapor generated in the high-temperature regenerator 100 enters the low-temperature regenerator 400 through the discharge line 850, and the low-temperature regenerator 400 is generated in the high-temperature regenerator 100 and passes through the high-temperature heat exchanger 851. Thus, the medium-concentration absorption liquid that has entered the low-temperature regenerator 400 is heated, radiated and condensed, and then supplied to the condenser 500 .

In addition, the refrigerant heated in the low-temperature regenerator 400 and evaporated and separated from the intermediate absorption liquid enters the condenser 500 , heat-exchanges with water flowing through the inside of the heat transfer tube from the cooling water pipe, condensates and liquefies, and enters the evaporator 200 .

The refrigerant liquid stored in the bottom of the evaporator 200 is spread by the refrigerant pump 252 on the heat transfer tube, heat exchanges with water supplied through the cold/hot water tube 600, and evaporates, and cools the water flowing through the heat transfer tube .

Then, the refrigerant evaporated in the evaporator 200 enters the absorber 300 , and is heated in the low-temperature regenerator 400 to evaporate and separate the refrigerant, that is, the absorption liquid with a higher concentration of the absorbent liquid, that is, from the recovery line 450 , it is dispersed from above. It is absorbed in a highly concentrated absorbent solution.

The absorbent liquid whose concentration has decreased by absorbing the refrigerant in the absorber 300, that is, the low-concentration absorbent liquid, is sent to the high-temperature regenerator 100 through the circulation line 350 by the operation of the absorbent liquid pump 351, and one damper motor 140 ) is simultaneously driven and regenerated in the high-temperature regenerator 100 .

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

Claims (20)

an evaporator having a refrigerant injection unit for injecting a refrigerant, and exchanging heat with the refrigerant injected through the refrigerant injection unit and cold water;
an absorber through which a gaseous refrigerant is supplied from the evaporator, and through which cooling water passes;
a first regenerator for heating the absorbent liquid supplied from the absorber;
a condenser to which the gaseous refrigerant generated in the first regenerator is supplied and through which the cooling water passes;
a second regenerator for heating the low-concentration absorbent liquid discharged from the absorber to generate a medium-concentration absorbent liquid and discharging it to the first regenerator; and
A control module for simultaneously controlling the flow rates of the raw material applied to the second regenerator and the low-concentration absorption liquid
including,
the second player
a burner that ignites and supplies heat,
a fuel supply line for injecting fuel into the burner;
an air supply line for injecting air into the burner;
an absorption liquid injection line for injecting the low-concentration absorption liquid, and
A control line connecting all of the fuel supply line, the air supply line, and the absorbent liquid injection line
It characterized in that it comprises, an absorption chiller. delete delete According to claim 1,
An absorption chiller, characterized in that a damper for controlling the flow rates of the fuel supply line, the air supply line, and the absorption liquid injection line is formed inside the control line. 5. The method of claim 4,
The absorption chiller,
Absorption chiller, characterized in that it further comprises a damper motor for controlling the inclination of the damper of the control line. 6. The method of claim 5,
The control module is
An absorption chiller, characterized in that the inclination of the damper is controlled by driving the damper motor according to a control command. 7. The method of claim 6,
The control module calculates an amount of heat input in response to a control command for the absorption chiller, and calculates an amount of opening of the damper according to the amount of heat input, the absorption chiller. 8. The method of claim 7,
The control module is characterized in that the flow rates of the fuel supply line, the air supply line, and the absorption liquid injection line are simultaneously controlled according to the opening amount of the damper. 9. The method of claim 8,
The control module, an absorption chiller, characterized in that it includes a table corresponding to the heat input amount and the open amount of the damper as data therein. 10. The method of claim 9,
The absorption chiller, characterized in that the second regenerator is a high-temperature regenerator, and the first regenerator is a low-temperature regenerator. an evaporator having a refrigerant injection unit for injecting a refrigerant, and exchanging heat with the refrigerant injected through the refrigerant injection unit and cold water; an absorber through which a gaseous refrigerant is supplied from the evaporator, and through which cooling water passes; a first regenerator for heating the absorbent liquid supplied from the absorber; A method for controlling an absorption chiller comprising a condenser through which the gaseous refrigerant generated in the regenerator is supplied and a cooling water passes through, and a second regenerator that heats the low-concentration absorption liquid from the absorber to generate a medium-concentration absorption liquid and discharges it to the first regenerator in,
calculating heat input information for the absorption chiller;
calculating a flow rate of the low-concentration absorption liquid introduced into the second regenerator corresponding to the amount of heat input; and
Flowing the low-concentration absorbent liquid by simultaneously controlling the flow rates of the raw material applied to the second regenerator and the low-concentration absorbent liquid according to the calculated flow rate of the low-concentration absorbent liquid
includes,
The second regenerator includes a burner that is ignited to supply heat, a fuel supply line for injecting fuel into the burner, an air supply line for injecting air into the burner, an absorption liquid injection line for injecting the low concentration absorption liquid, and the fuel supply line , The control method of the absorption chiller, characterized in that it comprises a control line for connecting all of the air supply line and the absorption liquid injection line.
delete delete delete 12. The method of claim 11,
A control method of an absorption chiller, characterized in that a damper for controlling the flow rates of the fuel supply line, the air supply line, and the absorption liquid injection line is formed inside the control line. 16. The method of claim 15,
Further comprising a damper motor for controlling the inclination of the damper of the control line,
The step of flowing the low-concentration absorbent liquid,
The control method of the absorption chiller, characterized in that by driving the damper motor to change the inclination of the damper to control the flow rate. 17. The method of claim 16,
Calculating the flow rate of the low-concentration absorption liquid introduced into the second regenerator corresponding to the amount of heat input includes:
The control method of the absorption chiller, characterized in that calculating the amount of heat input in response to a control command for the absorption chiller, and calculating the amount of opening of the damper according to the amount of heat input. 18. The method of claim 17,
The control method of the absorption chiller, characterized in that the flow rate of the fuel supply line, the air supply line, and the absorption liquid injection line is changed at the same time as the slope of the damper is changed. 19. The method of claim 18,
The control method of the absorption chiller, characterized in that the inclination of the damper reads the heat input amount and the open amount of the damper from the corresponding table data. 20. The method of claim 19,
The method for controlling an absorption chiller, characterized in that the second regenerator is a high-temperature regenerator, and the first regenerator is a low-temperature regenerator.

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