KR20100074387A - Low temperature water two-stage absorbtion type refrigerator and heater - Google Patents

Abstract

PURPOSE: A low temperature 2 stage absorption air conditioner is provided to respectively process cooling and heating using one instrument. CONSTITUTION: A low temperature 2 stage absorption air conditioner(200) comprises: a first shell(110) which comprises a first regenerator, an assisting regenerator, and a condenser; a second shell(120) which comprises an evaporator, an absorber, and an eliminator; a third shell(130) which comprises a second regenerator, a secondary absorber, and a second eliminator; a high temperature heat exchanger(150); a low temperature heat exchanger(140); a sub heat-exchanger(160); pumps(101,102,103,104,105,106); a cooling water line; a refrigerant line; an absorption liquid line; and a cold water line. Steam generating by spraying absorption liquid to the first regenerator of the first shell is supplied to the evaporator of the second shell through a heating steam line(210) in the heating cycle. The absorption liquid supplied from the low temperature heat exchanger is sprayed on the top of the evaporator of the second shell through the heating absorption liquid line and heats up and discharges heating water of the evaporator inside.

Description

LOW TEMPERATURE WATER TWO-STAGE ABSORBTION TYPE REFRIGERATOR AND HEATER}

The present invention relates to a cold water two-stage absorption type air conditioner, and more particularly, to a cold water two-stage absorption type air conditioner capable of performing cooling and heating respectively using a low temperature water two-stage absorption type air conditioner.

The absorption chiller is a refrigerator that cools water flowing through a pipe by using evaporation heat when the refrigerant evaporates, and condenses and reuses the evaporated refrigerant.

On the other hand, a low temperature two-stage absorption chiller using a district heating hot water pipe network has been developed. The low temperature two-stage absorption chiller has two cycles, and when the cooling load falls below 80%, one cycle is stopped to use energy. 25% increase in efficiency (COP). Most of the cooling season, except for the cold weather, is operated with a cooling load of 80% or less.

Low temperature water two stage absorption chiller is a pollution-free product that uses water as a refrigerant, and it is a product that can prevent electric power concentration in summer by using heat energy as a driving source. In addition, it is very safe because it is operated in a vacuum state, and it can be operated unattended as it can be operated automatically with the product combined with heat exchanger.

1 is a system diagram showing the configuration of a conventional low temperature two-stage absorption chiller.

Referring to Figure 1, the conventional low-temperature water two-stage absorption chiller 10 is the circulation system of the absorption liquid consists of two parts of the main system and the auxiliary system.

Referring to the main system, the absorbed liquid which is sprayed from the upper end of the absorber 16 to absorb the refrigerant vapor is discharged from the absorber 16 and pressurized by the solution pump 23 to be a low temperature heat exchanger 19 and a high temperature heat exchanger. Passed through the 18 to the first regenerator 11 and sprayed from the upper portion of the first regenerator 11, a part of the refrigerant vapor is discharged by the cold water through the eliminator 26, the absorbing liquid mediumly thickened Is delivered to the second regenerator 14 via the high temperature heat exchanger 18 and sprayed on top of the second regenerator 14. The refrigerant vapor is discharged from the second regenerator 14 and the concentrated absorbent liquid is returned to the absorber 16 through the low temperature heat exchanger 19 and sprayed at the top of the absorber 16.

Referring to the auxiliary system, the auxiliary absorbent liquid absorbed by the refrigerant vapor passed from the second regenerator 14 through the eliminator 24 and diluted is discharged from the auxiliary absorber 15 and pressurized by the solution pump 21 to perform auxiliary heat exchange. The apparatus 20 goes to the auxiliary player 12. Sprayed from the upper end of the auxiliary regenerator 12 discharges the refrigerant vapor and the concentrated absorbent liquid is returned to the auxiliary absorber 15 through the auxiliary heat exchanger 20.

On the other hand, the refrigerant vapor generated in the first regenerator 11 and the auxiliary regenerator 12 is condensed in the condenser 13, and the refrigerant liquid is transferred to the evaporator 17. In the evaporator 17, the refrigerant is sprayed to the upper portion of the evaporator 17 by the refrigerant pump 23, and some vaporized refrigerant vapor is transferred to the absorber 16 through the eliminator 25. The refrigerant liquid not evaporated is collected under the evaporator 17 and sprayed again by the refrigerant pump 23 to the top of the evaporator 17.

In addition, the cold water is cooled while flowing inside the tube of the evaporator 17 and used for cooling, and the cooling water absorbs heat through the absorber 16, the auxiliary absorber 15, and the condenser 13, thereby cooling tower (not shown). To continue to circulate heat released to the atmosphere and cooled to return to absorber 16. The hot water separates the refrigerant vapor by heating the absorption liquid through the first regenerator 11, the second regenerator 14, and the auxiliary regenerator 12.

However, such a conventional low temperature two-stage absorption chiller has an auxiliary absorber located at the top of the evaporator and the condenser is located next to the auxiliary regenerator, which complicates the piping of the coolant having the largest diameter, resulting in the pressure of the cooling water line. There is a problem in that the drop is lowered cooling efficiency.

In addition, the conventional low temperature two-stage absorption chiller has a problem in that the width of the refrigerator increases as the auxiliary regenerator is installed on the side of the first regenerator.

In order to solve this problem, Korean Patent Publication No. 10-0746241 (name: cold water two-stage absorption chiller) filed by the applicant has been filed.

Figure 2 is a system diagram showing the configuration of the cold water two-stage absorption chiller.

Referring to FIG. 2, the cold water two-stage absorption chiller 100 includes a first shell 110, a second shell 120, and a third shell 130.

First, the first shell 110, the first regenerator 111, the auxiliary regenerator 112 and the condenser 113 are sequentially installed from the bottom, and the eliminator 114 is provided on the side of the responder 113 Is installed. Here, the first shell 100 is provided with a first pedestal 115 having a downward inclined surface so that the absorption liquid and the refrigerant dropped in the auxiliary regenerator 112 and the condenser 113 are collected on one side to facilitate the discharge. The lower end portion is formed in a hemispherical shape so that the absorbent liquid dropped from the first regenerator 111 is collected at the center and easily discharged.

In the second shell 120, the evaporator 121 is installed at the left side as shown in the drawing, the absorber 122 is installed at the right side, and the first eliminator (B) is disposed between the evaporator 121 and the absorber 122. 123 is installed, and the first shell 110 is installed on the side. Here, the second shell 120 is provided with a second pedestal 124 having a downward inclined surface so that the refrigerant dripping from the evaporator 121 is collected on one side to facilitate the discharge, and the absorbent liquid dripping from the absorber 122 is The lower end is formed in a hemispherical shape to facilitate the discharge to the center.

In addition, the third shell 130, the second regenerator 131 is installed on the left side as shown in the drawing, the auxiliary absorber 132 is installed on the right side, the second regenerator 131 and the auxiliary absorber 132 on the bottom surface In order to facilitate the discharge of the liquid absorbed in each side in the downward inclined surface 133 is formed in two stages, the lower end of the second regenerator 131 is installed at a position higher than the lower end of the auxiliary absorber 132, the second regenerator ( A second eliminator 134 is installed between the 131 and the auxiliary absorber 132, and the second shell 120 is installed at the top, so as to simplify the coolant line 170 of the second shell 120. Position the secondary absorber 132 on top of the absorber 122.

Meanwhile, the low temperature heat exchanger 140, the high temperature heat exchanger 150, and the auxiliary heat exchanger 160 are installed at the lower end of the low temperature water two stage absorption chiller 100, and are connected to the respective devices through the absorbent liquid line.

Hereinafter, the operation of the cold water two-stage absorption type refrigerator will be described in detail with reference to the accompanying drawings.

Referring to the operation of the main system, the absorbent liquid sprayed from the upper end of the absorber 122 to absorb the refrigerant vapor is discharged from the absorber 122 and pressurized by the rare pump 101, which is an absorbent pump, to thereby cool the heat exchanger 140. ) And the high temperature heat exchanger 150 are transferred to the first regenerator 111 and sprayed from the upper part of the first regenerator 111 to discharge some refrigerant vapor, and the intermediate liquid absorbed medium is an intermediate liquid pump which is an absorption liquid pump. Passed through the high temperature heat exchanger 150 to the second regenerator 131 via the 102, and is sprayed on the top of the second regenerator 131. The refrigerant vapor is discharged from the second regenerator 131, and the concentrated absorbent liquid is sprayed from the upper end of the absorber 122 by the concentrate pump 103, which is the absorbent pump, back to the absorber 122 through the low temperature heat exchanger 140. . At this time, the absorbent liquid dropped by the U-shaped shape of the bottom surface of the first shell 110 and the inclined surface 133 of the third shell 130 is easily collected and discharged to one side.

Referring to the auxiliary system, the auxiliary absorbent liquid absorbed by the refrigerant vapor passed from the second regenerator 131 via the second eliminator 134 and diluted is discharged from the auxiliary absorber 132 and pressurized by the auxiliary lean pump 104. And goes to the auxiliary regenerator 112 via the auxiliary heat exchanger (160). Sprayed from the top of the auxiliary regenerator 112 to discharge the refrigerant vapor and the concentrated absorbent liquid is returned to the auxiliary absorber 132 via the auxiliary heat exchanger (160). At this time, the absorbent liquid is dropped by the inclined surface 133 of the third shell 130 formed at the lower end of the auxiliary absorber 132 and the first pedestal 115 of the first shell 110 installed at the lower end of the auxiliary regenerator 112. Are gathered to one side to facilitate discharge.

Meanwhile, the refrigerant vapor generated in the first regenerator 111 and the auxiliary regenerator 112 is condensed in the condenser 113, and the refrigerant liquid is delivered to the evaporator 121. In the evaporator 121, the refrigerant is sprayed to the upper portion of the evaporator 121 by the refrigerant pump 105, and the partially evaporated refrigerant vapor is transferred to the absorber 122 through the second eliminator 123. The refrigerant liquid not evaporated is collected under the evaporator 121 and sprayed back to the top of the evaporator 121 by the auxiliary concentrate pump 106. At this time, the coolant liquid dropped by the second support 124 formed at the lower end of the evaporator is easily collected and discharged to one side.

In addition, the cold water is cooled while flowing inside the tube of the evaporator 121 is used for cooling, the cooling water absorbs heat while passing through the absorber 122, the auxiliary absorber 132, the condenser 113 to cool the cooling tower (not shown) To continue to circulate with the heat released to the atmosphere and cooled to return to absorber 122. At this time, since the coolant line 170 is transferred from the absorber 122 directly to the auxiliary absorber 132, the path of the pipe is simplified.

Meanwhile, the hot water separates the refrigerant vapor by heating the absorbent liquid through the first regenerator 111, the second regenerator 131, and the auxiliary regenerator 112, and the flow of hot water flows smoothly from the bottom to the top. This is provided.

However, such a conventional low temperature two-stage absorption chiller does not provide heating simply by performing only cooling.

The present invention is to solve the above problems, by supplying the water vapor generated by spraying the absorbent liquid to the first regenerator during the heating cycle to the evaporator, by spraying the absorbent liquid on the top of the evaporator through the absorbent liquid line for heating from the low temperature heat exchanger It is an object of the present invention to provide a low-temperature two-stage absorption type air conditioner for cooling and heating as a machine by heating and discharging the heating water inside the evaporator.

Features of the present invention for achieving the above object,

A first cell having a first regenerator, an auxiliary regenerator and a condenser, a second cell having an evaporator, an absorber and an eliminator, a third cell having a second regenerator, an auxiliary absorber and a second eliminator; A low temperature water two-stage absorption type air conditioner comprising a high temperature heat exchanger, a low temperature heat exchanger, an auxiliary heat exchanger, a plurality of pumps, and a cooling water line, a refrigerant line, an absorbent liquid line, and a cold water line connecting them; During the heating cycle, water vapor generated by spraying the absorbent liquid to the first regenerator in the first cell is supplied to the evaporator of the third cell through a heating steam line, and the absorbent liquid supplied from the low temperature heat exchanger is supplied through the heating absorbent liquid line. Spraying the upper portion of the evaporator of the third cell, characterized in that for heating the heating water inside the evaporator to discharge.

Herein, the absorbent liquid is absorbed by water vapor and falls to the lower part of the evaporator in a diluted state and is collected in the absorber of the second cell, and sprayed from the upper part of the first regenerator of the first cell through the low temperature heat exchanger and the high temperature heat exchanger. It is concentrated while boiling by heat of district heating water flowing in the first regenerator, and is sprayed on the upper end of the second regenerator of the third cell through the high temperature heat exchanger and then the absorber of the second cell through the low temperature heat exchanger. Each is sprayed from the top of the evaporator.

Here, the cold water two-stage absorption type air conditioner is a heating absorbent liquid first branch line for branching the absorbent liquid discharged from the absorber of the second cell to the low temperature heat exchanger through the absorbent liquid line to bypass the absorber of the second cell. It is further provided.

Here, the cold water two-stage absorption type air conditioner further includes a heating absorption liquid second branch line interconnecting the heating steam line and the heating absorption liquid first branch line.

Here, the heating steam line further includes a first opening and closing means on the line to be opened only during the heating cycle.

Here, the first opening and closing means is a U trap.

Here, the U trap is connected to the heating absorbing liquid second branch line so that the absorption liquid is supplied to the inside during cooling to block the movement of the water vapor, and the absorption liquid is discharged during the heating to allow the movement of the water vapor.

Here, the heating absorbent liquid line further includes a second opening and closing means for supplying the absorbent liquid which is opened only during a heating cycle and is supplied from the low temperature heat exchanger to the evaporator of the second cell.

Here, the second opening and closing means is a solenoid valve.

Here, the heating absorbent liquid first branch line is opened only during a cooling cycle, and the absorbent liquid discharged from the absorber of the second cell and supplied to the low temperature heat exchanger is supplied to the U trap through the heating absorbent liquid second branch line. And a third opening and closing means for closing the heating steam line.

Here, the third opening and closing means is a solenoid valve.

Here, the heating absorbent liquid second branch line is composed of a supply line connected to the front end of the third opening and closing means to supply the absorbent liquid, and a discharge line connected to the rear end of the third opening and closing means to discharge the absorbent liquid, The discharge line is formed with an orifice for discharging the absorbent liquid by the pressure difference.

According to the present invention, the cold water two-stage absorption type air conditioner configured as described above supplies water vapor generated by spraying the absorbent liquid to the first regenerator during the heating cycle to the evaporator, and the absorbent liquid to the upper part of the evaporator through the absorbent liquid line for heating from the low temperature heat exchanger. By spraying the heating water in the evaporator to be discharged by heating there is an advantage that can be performed cooling and heating.

Hereinafter, with reference to the accompanying drawings, the configuration of the cold water two-stage absorption type air conditioner according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that specific descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be made based on the contents throughout the specification.

Figure 3 is a system diagram showing the configuration of the cold water two-stage absorption type air conditioner according to the present invention, Figure 4 is a side view showing the configuration of the first and second branch line of the absorption liquid for heating in the cold water two-stage absorption type air conditioner according to the present invention.

First, the cold water two-stage absorption type air conditioner 200 according to the present invention includes a first shell 110, a second shell 120, and a third of the conventional low temperature two-stage absorption type chiller 100 (see FIG. 2). Shell 130, Low Temperature Heat Exchanger 140, High Temperature Heat Exchanger 150, Auxiliary Heat Exchanger 160, Absorbent Pumps 101, 102, 103, Auxiliary Absorbent Pump 104, and Refrigerant The pumps 105 and 106, and the cooling water line, the refrigerant line, the absorbent liquid line, and the cold water line which connect them, have the same configuration, and their description is omitted.

3 and 4, the cold water two-stage absorption type air conditioner 200 according to the present invention includes a first shell 110, a second shell 120, a third shell 130, and steam for heating. It further includes a line 210, a heating absorbent liquid line 220, a heating absorbent liquid first branch line 230, and a heating absorbent liquid second branch line 240.

First, the heating steam line 210 interconnects the first cell 110 and the second cell 120 to supply water vapor generated in the first cell 110 to the inside of the second cell 120 during the heating cycle. do. Here, the heating steam line 210 is further provided with opening and closing means on the line so as to open only during the heating cycle, it is preferable that the opening and closing means is a U trap 211, a manual valve or a solenoid valve may be used depending on the selection. It may be. Here, the U trap 211 is supplied with an absorbent liquid during cooling to block the movement of water vapor, and the absorbent liquid is discharged during heating so that the movement of the water vapor may be described in the following. Connected with

In addition, one end of the heating absorbent liquid line 220 is connected to the output side absorbent liquid line of the low temperature heat exchanger 140, and the other end thereof is connected to the input side absorbent liquid line of the evaporator 121 of the second cell 120. Here, the heating absorbent liquid line 220 is provided with a first solenoid valve 221 on the line so as to open only during the heating cycle, branching the absorbent liquid supplied from the low temperature heat exchanger 140 to the absorber during the heating cycle, and thus the second cell. Supply to the evaporator 121 of 120 to be sprayed on the top of the evaporator 121. Here, a manual valve may also be used in place of the first solenoid valve 221.

In addition, the heating absorbent liquid first branch line 230 branches the absorbent liquid discharged from the absorber 122 of the second cell 120 to the low temperature heat exchanger 140 through the absorbent liquid line (the absorber of the second cell 120). Bypass 122). Here, the absorbent liquid for heating the first branch line 230 is opened only during the cooling cycle and is discharged from the absorber 122 of the second cell 120 to be supplied to the low temperature heat exchanger 140. A second solenoid valve 231 is provided to supply the U trap 211 through the 240 to close the heating steam line 210. Here, a manual valve may also be used in place of the second solenoid valve 231.

In addition, the heating absorbent liquid second branch line 240 interconnects the heating steam line 210 and the heating absorbent liquid first branch line 230 so that the absorbent liquid is supplied and discharged to the U trap 211. Here, the heating absorbent liquid second branch line 240 is provided at a supply line 241 connected to the front end of the second solenoid valve 231 to supply the absorbent liquid, and at the rear end of the second solenoid valve 231 to discharge the absorbent liquid. It consists of a discharge line 243 is connected, the discharge line 243 is formed with an orifice 245 for discharging the absorbent liquid by the pressure difference.

Hereinafter, with reference to the accompanying drawings, the operation of the cold water two-stage absorption type air conditioner according to the present invention will be described in detail.

5 is a system diagram showing a cooling cycle of the cold water two-stage absorption type air conditioner according to the present invention, Figure 6 is a system diagram showing a heating cycle of the cold water two-stage absorption type air conditioner according to the present invention.

First, referring to FIG. 5, the main system operation of the cooling cycle will be described. The absorbent liquid diluted by absorbing the refrigerant vapor sprayed from the upper end of the absorber 122 is discharged from the absorber 122 and is a liquid pump 101 which is an absorbent pump. Pressurized by the low temperature heat exchanger 140 and the high temperature heat exchanger 150 is passed to the first regenerator 111 is sprayed from the upper portion of the first regenerator 111 to discharge some refrigerant steam, medium The absorbed liquid is transferred to the second regenerator 131 through the high temperature heat exchanger 150 via the intermediate liquid pump 102 which is the absorbent pump, and is sprayed on the upper part of the second regenerator 131. The refrigerant vapor is discharged from the second regenerator 131, and the concentrated absorbent liquid is sprayed from the upper end of the absorber 122 by the concentrate pump 103, which is the absorbent pump, back to the absorber 122 through the low temperature heat exchanger 140. . At this time, the absorbent liquid dropped by the U-shaped shape of the bottom surface of the first shell 110 and the inclined surface 133 of the third shell 130 is easily collected and discharged to one side.

Referring to the auxiliary system, the auxiliary absorbent liquid absorbed by the refrigerant vapor passed from the second regenerator 131 via the second eliminator 134 and diluted is discharged from the auxiliary absorber 132 and pressurized by the auxiliary lean pump 104. And goes to the auxiliary regenerator 112 via the auxiliary heat exchanger (160). Sprayed from the top of the auxiliary regenerator 112 to discharge the refrigerant vapor and the concentrated absorbent liquid is returned to the auxiliary absorber 132 via the auxiliary heat exchanger (160). At this time, the absorbent liquid is dropped by the inclined surface 133 of the third shell 130 formed at the lower end of the auxiliary absorber 132 and the first pedestal 115 of the first shell 110 installed at the lower end of the auxiliary regenerator 112. Are gathered to one side to facilitate discharge.

Meanwhile, the refrigerant vapor generated in the first regenerator 111 and the auxiliary regenerator 112 is condensed in the condenser 113, and the refrigerant liquid is delivered to the evaporator 121. In the evaporator 121, the refrigerant is sprayed to the upper portion of the evaporator 121 by the refrigerant pump 105, and the partially evaporated refrigerant vapor is transferred to the absorber 122 through the second eliminator 124. The refrigerant liquid not evaporated is collected under the evaporator 121 and sprayed back to the top of the evaporator 121 by the auxiliary concentrate pump 106. At this time, the coolant liquid dropped by the second support 124 formed at the lower end of the evaporator is easily collected and discharged to one side.

In addition, the cold water is cooled while flowing inside the tube of the evaporator 121 is used for cooling, the cooling water absorbs heat while passing through the absorber 122, the auxiliary absorber 132, the condenser 113 to cool the cooling tower (not shown) To continue to circulate with the heat released to the atmosphere and cooled to return to absorber 122.

Meanwhile, the hot water separates the refrigerant vapor by heating the absorbent liquid through the first regenerator 111, the second regenerator 131, and the auxiliary regenerator 112, and the flow of hot water flows smoothly from the bottom to the top. This is provided.

At this time, the second solenoid valve 231 of the heating absorbent liquid first branch line 230 is closed so that the absorbent liquid is supplied to the U trap 211 through the heating absorbent liquid second branch line 240 to provide the heating steam line 210. The first conversion valve 221 of the heating absorbent liquid line 220 is closed to block the absorbent liquid from being sprayed on the evaporator 121.

On the other hand, the first conversion valve 221 and the second conversion valve 231 can be easily switched between heating and cooling by controlling the opening and closing through the operation of a switch (not shown).

That is, the manager can switch heating and cooling through a switch operation, and when switching to heating, the first conversion valve 221 and the second conversion valve 231 are opened.

In addition, during the heating cycle, only the main system is operated, and the auxiliary system is stopped. The stopping of the auxiliary system is preferably performed through a PLC (not shown) connected with the switch. The heating cycle is operated after repeating blowdown of 121 several times.

Referring to FIG. 6, the main system operation of the heating cycle will be described. The surface of the first regenerator 111 is discharged from the upper part of the first regenerator 111 by district heating water circulating through the first regenerator 111. When water vapor is generated in the generated water vapor is supplied into the third cell 130 through the heating steam line 210. At this time, the second conversion valve 231 of the heating absorbent liquid first branch line 230 is opened so that the absorbent liquid is supplied to the absorbent liquid line through the heating absorbent liquid first branch line 230, and the absorbent liquid in the U trap 211 is pressurized. The U trap 211 is opened by being discharged into the absorbent liquid line through the first absorbent liquid first branch line 230 for heating through the discharge line 243 of the second absorbent liquid second branch line 240 for heating.

In addition, the first conversion valve 221 of the heating absorbent liquid line 220 is opened so that the absorbent liquid is sprayed from the upper part of the evaporator 121 to heat and discharge the heating water inside the evaporator 121 to perform heating.

On the other hand, the absorbent liquid in a state in which water vapor is diluted by diluting falls to the lower part of the evaporator 121 and is gathered in the absorber of the second cell 120 to collect the low temperature heat exchanger 140 and the high temperature heat exchanger by the rare pump 101 as the absorbent pump. Sprayed from the upper part of the first regenerator 111 of the first cell 110 through the 150, it is concentrated while boiling by the heat of the district heating water flowing inside the first regenerator (111).

Then, the absorbent liquid is sprayed on the upper end of the second regenerator 131 of the third cell 130 by the intermediate liquid pump 102, which is the absorbent pump, through the high temperature heat exchanger 150, and then, the absorbent pump, which is the absorbent pump ( 103 is sprayed through the low temperature heat exchanger 140 at the upper end of the absorber 122 and the evaporator 121 of the second cell 120, respectively. At this time, the coolant flow is blocked into the absorber 122.

The auxiliary system stops during the heating cycle, i.e., the auxiliary lean pump 104, the refrigerant pump 105, the auxiliary concentrate pump 106, the absorber 122, the auxiliary absorber 132, and the auxiliary Operation of the regenerator 112 and the auxiliary heat exchanger 160 is stopped.

Therefore, by adding a heating steam line and a heating absorbing liquid line to the low temperature water two-stage absorption type freezer, heating and supplying the heating water using district heating water can provide cooling and heating.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

1 and 2 is a system diagram showing the configuration of a conventional low temperature two-stage absorption chiller,

3 is a schematic diagram showing the configuration of a cold water two-stage absorption air conditioner according to the present invention;

Figure 4 is a side view showing the configuration of the first and second branch line of the absorption liquid for heating in the cold water two-stage absorption air-conditioner according to the present invention,

5 is a system diagram showing a cooling cycle of the cold water two-stage absorption type air conditioner according to the present invention;

Figure 6 is a schematic diagram showing the heating cycle of the cold water two-stage absorption air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

210: steam line for heating 211: U trap

220: absorption liquid line for heating 221: first solenoid valve

230: absorption liquid for heating first branch line 231: second solenoid valve

240: heating absorbent liquid second branch line 241: supply line

243: discharge line 245: orifice

Claims (12)

A first cell having a first regenerator, an auxiliary regenerator and a condenser, a second cell having an evaporator, an absorber and an eliminator, a third cell having a second regenerator, an auxiliary absorber and a second eliminator; A low temperature water two-stage absorption type air conditioner comprising a high temperature heat exchanger, a low temperature heat exchanger, an auxiliary heat exchanger, a plurality of pumps, and a cooling water line, a refrigerant line, an absorbent liquid line, and a cold water line connecting them; During the heating cycle, water vapor generated by spraying the absorbent liquid to the first regenerator in the first cell is supplied to the evaporator of the second cell through a heating steam line, and the absorbent liquid supplied from the low temperature heat exchanger is supplied through the heating absorbent liquid line. Spraying the upper part of the evaporator of the second cell to heat and discharge the heating water in the evaporator characterized in that the low-temperature water two-stage absorption air conditioner. The method of claim 1, The absorbent liquid, Water vapor absorbs water vapor and falls to the lower part of the evaporator in a diluted state, is collected in the absorber of the second cell, sprayed from the upper part of the first regenerator of the first cell through the low temperature heat exchanger and the high temperature heat exchanger, and flows inside the first regenerator. It is concentrated while boiling by heat of district heating water, and then sprayed on the upper end of the second regenerator of the third cell through the high temperature heat exchanger, and then sprayed on the upper end of the absorber and the evaporator of the second cell through the low temperature heat exchanger. Cold water two-stage absorption type air conditioner, characterized in that. The method of claim 1, The cold water two-stage absorption type air conditioner, And further comprising a first absorbing liquid first branch line for branching the absorbent liquid discharged from the absorber of the second cell to the low temperature heat exchanger through the absorbent liquid line and bypassing the absorbent liquid to the absorber of the second cell. Absorption air conditioner. The method of claim 1, The cold water two-stage absorption type air conditioner, And a heating absorbing liquid second branch line interconnecting the heating steam line and the heating absorbing liquid first branch line. The method of claim 1, In the steam line for heating, And a first opening / closing means on the line so as to be opened only during the heating cycle. The method of claim 5, The first opening and closing means, Low temperature water two-stage absorption type air conditioner, characterized in that the U trap. The method of claim 4, wherein The U trap, Cooling water two-stage absorption type air conditioner characterized in that the absorption liquid is supplied inside to block the movement of water vapor, and the absorbing liquid is discharged during heating to be connected to the second branch line of the heating absorbent liquid to enable the movement of water vapor. The method of claim 1, In the absorption liquid line for heating, And a second opening and closing means for supplying the absorbent liquid which is opened only during the heating cycle and is supplied from the low temperature heat exchanger to the evaporator of the second cell. The method of claim 8, The second opening and closing means, Low temperature water two-stage absorption type air conditioner, characterized in that the solenoid valve. The method according to claim 3 or 4, In the first absorption line for absorbing liquid for heating, A third opening and closing means for closing the heating steam line by supplying the absorbing liquid which is opened only during a cooling cycle and is discharged from the absorber of the third cell and supplied to the low temperature heat exchanger to the U trap through the heating absorbing liquid second branch line. A cold water two-stage absorption type air conditioner, characterized in that it further comprises. The method of claim 10, The third opening and closing means, Low temperature water two-stage absorption type air conditioner, characterized in that the solenoid valve. The method of claim 10, The second absorbent liquid for branch line, A supply line connected to the front end of the third opening and closing means for supplying the absorbent liquid, and a discharge line connected to the rear end of the third opening and closing means for discharging the absorbent liquid, wherein the discharge line discharges the absorbent liquid by a pressure difference. Cold water two-stage absorption type air conditioner, characterized in that the orifice is formed.

Images