KR20080001998U - Apparatus for preventing thick absorption solution pump from crystallization in absorption water cooler and heater - Google Patents

Abstract

Disclosed is a concentrated absorption liquid pump determination preventing device of an absorption chiller. Determination of the concentrated absorbent liquid pump of the absorption chiller according to the present invention, the high temperature regenerator 100, low temperature regenerator 110, condenser 120, evaporator 130, absorber 140, low temperature heat exchanger 150, high temperature A heat exchanger 160 and a connection pipe 183 connecting the low temperature regenerator side and the low temperature heat exchanger to supply the concentrated absorbent liquid having a high concentration on the low temperature regenerator side to the absorber via the low temperature heat exchanger; Of the absorption type cold / hot water machine having a concentrated absorbent liquid pump 182 for pumping the concentrated absorbent liquid and a rare absorbent liquid pump 181 installed at a pipe 142 connecting the rare absorbent liquid receiver 141 below the absorber and the low temperature heat exchanger. In the absorption liquid pump determination prevention device, a branch pipe (184) for supplying the rare absorbing liquid from the rare absorbent liquid pump to the connecting pipe by connecting the outlet of the rare absorbent liquid pump and the outlet side of the concentrated absorbent liquid pump of the connecting pipe. ; And a throttling device 185 installed in the branch pipe to throttle the rare water absorbing liquid. According to this, the concentrated absorbent pump installed in the connection pipe connecting the low temperature regenerator side and the low temperature heat exchanger to supply the concentrated absorbent liquid having a high concentration from the low temperature regenerator to the absorber is stopped by crystallization of the concentrated absorbent liquid. It is effective to prevent.

Description

Determination device for concentrated absorption liquid pump of absorption cold / hot water machine {APPARATUS FOR PREVENTING THICK ABSORPTION SOLUTION PUMP FROM CRYSTALLIZATION IN ABSORPTION WATER COOLER AND HEATER}

The present invention relates to an apparatus for preventing the determination of a concentrated absorbent liquid pump of an absorption cold / hot water machine, and particularly, a concentrated absorbent liquid installed in a connection pipe connecting the low temperature regenerator side and the low temperature heat exchanger to supply a high concentration of the absorbent liquid through the low temperature heat exchanger to the absorber. The present invention relates to an apparatus for preventing the absorption of a concentrated absorbent liquid pump of an absorption cold / hot water machine capable of preventing the pump from being stopped by crystallization of the concentrated absorbent liquid.

In general, the absorption refrigeration and cold and hot water, as shown in Figure 1, the hot regenerator 10, cold regenerator 20, condenser 30, evaporator 40, one or two absorbers 50, low temperature heat exchange Group 60 and a high temperature heat exchanger 70.

In the case of such absorption refrigeration and cold and hot water heaters, the high temperature regenerator 10 is heated by a heat source 11 such as a burner to separate the rare absorbent liquid into the intermediate absorption liquid and the refrigerant gas, and the refrigerant gas is supplied to the low temperature regenerator 20 to exchange the high temperature heat. The intermediate absorbent liquid heat-exchanged by the gas 70 is separated into the concentrated absorbent liquid and the refrigerant vapor, and the refrigerant vapor and the condensation refrigerant are condensed by heat exchange with the cooling water passing through the condenser 30 to the condenser 30 from the condenser 30 to the evaporator 40. Supplied. The cooling water passing through the condenser 30 is converted into hot water and discharged by heat exchange with a high temperature refrigerant.

The condensation refrigerant supplied from the condenser 30 to the evaporator 40 is supplied to the evaporator 40 and evaporated, and the evaporated refrigerant gas is absorbed through the low temperature regenerator 20 through the low temperature heat exchanger 60. Absorbed by the high concentration of the concentrated absorption liquid supplied to the), made into a dilute absorbent liquid of a low concentration, the liquid refrigerant contained in the refrigerant gas is collected in the refrigerant liquid receiver 41 in the lower part of the evaporator (40). In this process, the water supplied to the evaporator 41 side is cooled by heat exchange with the refrigerant and is converted into cold water and discharged.

On the other hand, the rare absorbent liquid is supplied to the absorber 50 from the low temperature regenerator 20 side via the low temperature heat exchanger 60 while passing through the low temperature heat exchanger 60 and the high temperature heat exchanger 70 in turn. The absorbent liquid and the intermediate absorbent liquid of medium concentration supplied to the low temperature regenerator 20 side from the high temperature regenerator 10 side via the high temperature heat exchanger 70 are sequentially heat exchanged, and then supplied to the high temperature regenerator 10 and supplied to the heat source. By heating, it is converted into refrigerant gas again. The rare water absorbing liquid supplied to the high temperature regenerator 10 may be heat-exchanged with the exhaust gas generated by the heat source 11 and then supplied to the high temperature regenerator 10.

Reference numeral 80 denotes a heating valve for selectively supplying condensation refrigerant from the condenser 30 side to the absorber 50 side, and reference numeral 81 denotes a white space below the absorber 50 in the refrigerant liquid receiver 41 below the evaporator 40. A heating valve for selectively supplying the refrigerant to the absorbent liquid receiver 51, and reference numeral 82 denotes a heating valve for selectively supplying the refrigerant gas to the absorber 50 in a pipe connecting the high temperature regenerator 10 and the low temperature regenerator 20. to be. Reference numeral 83 is a heating valve installed in the connecting pipe 84 connecting the high temperature regenerator 10 side and the high temperature heat exchanger 70 to selectively supply the intermediate absorbent liquid from the high temperature regenerator 10 to the absorber 50. Indicates.

In addition, reference numeral 90 is a refrigerant pump which is installed in the bypass pipe for spraying the refrigerant in a spray type from the refrigerant liquid receiver 41 under the evaporator 40 back to the evaporator 40 side, and selectively pumps the refrigerant. 91 is a rare absorbing liquid pump installed in a pipe connecting the rare absorbing liquid receiver 51 and the low temperature heat exchanger 60 under the absorber 50 to selectively pump the rare absorbing liquid, and the reference numeral 92 denotes the low temperature regenerator 20 side. And a concentrated absorbent liquid pump installed in the connection pipe 93 connecting the low temperature heat exchanger 60 to selectively pump the concentrated absorbent liquid.

By the way, in the above-mentioned conventional absorption chiller, the concentrated absorbent liquid stays over the connecting pipe 93 and the concentrated absorbent liquid pump 92 in the state where the concentrated absorbent liquid pump 92 is stopped during operation or stop of the absorbent cold water heater. As the concentration of the concentrated absorbent liquid is high, the concentrated absorbent liquid is crystallized in the connection pipe 93 and the concentrated absorbent liquid pump 92. As such, when the concentrated absorbent liquid is crystallized in the connecting pipe 93 and the concentrated absorbent liquid pump 92, the concentrated absorbent liquid pump 92 is operated to supply the concentrated absorbent liquid from the low temperature regenerator 20 to the absorber 50. In this case, there is a problem in that the concentrated absorbent liquid pump 92 is not operated and the concentrated absorbent liquid cannot be supplied to the absorber 50.

The present invention has been made in consideration of the above-mentioned conventional problems, and the concentrated absorbent liquid pump installed in the connection pipe connecting the low temperature regenerator side and the low temperature heat exchanger to supply the concentrated absorbent liquid having a high concentration from the low temperature regenerator through the low temperature heat exchanger is An object of the present invention is to provide an apparatus for preventing the absorption of a concentrated absorbent liquid of an absorption cold / hot water machine, which can be prevented from being stopped by crystallization of the concentrated absorbent.

In order to achieve the above object, the present invention is a high temperature regenerator, a low temperature regenerator, a condenser, an evaporator, an absorber, a low temperature heat exchanger, a high temperature heat exchanger, the absorber having a high concentration on the low temperature regenerator side through the low temperature heat exchanger and the absorber A connection pipe connecting the low temperature regenerator side and the low temperature heat exchanger, a concentrated water absorbing pump installed at the connecting pipe to pump the concentrated absorbing liquid, and a pipe connected to the rare absorbing liquid receiving portion below the absorber and the low temperature heat exchanger. An apparatus for preventing the determination of a concentrated absorbent liquid pump of an absorption type cold / hot water machine having a rare absorbent liquid pump, the outlet of the rare absorbent liquid pump and the outlet side of the concentrated absorbent liquid pump in the connecting pipe, Branch pipe for supplying the absorbent liquid; And a throttling device installed in the branch pipe to throttle the rare absorbent liquid.

According to the condensation refrigerant supply apparatus of the absorption type cold and hot water heater according to the present invention configured as described above, the concentrated concentration of the absorbent liquid from the low temperature regenerator 110 side connection pipe 183 and the concentrated absorbent liquid pump 182 and the low temperature heat exchanger (150) It is supplied to the absorber 140, a part of the rare absorbing liquid pumped from the rare absorbing liquid receiving 141 by the driving of the rare absorbing liquid pump 181 through the branch pipe 184 and the throttling device 185 through the connection pipe ( 183, the concentrated absorbent liquid in the connection pipe 183 and the concentrated absorbent liquid pump 182 is diluted by the rare absorbent liquid. Therefore, when the absorption cold or hot water operation or stop, the concentrated absorption liquid in the connection pipe 183 and the concentrated absorbent liquid pump 182 is effectively diluted by the supply of the rare absorbent liquid, the connection tube 183 and the concentrated absorbent liquid pump 182 Crystallization of the concentrated absorbent liquid in the can be prevented, and as a result, the concentrated absorbent liquid pump 182 is prevented from being stopped by the crystallization of the concentrated absorbent liquid, so that the concentrated absorbent liquid from the low temperature regenerator 110 through the low temperature heat exchanger 150 Supply to the absorber 140 can be performed smoothly.

1 is a configuration diagram showing an example of a conventional absorption chiller.

Figure 2 is a partial configuration of the absorption type cold and hot water heater is applied to the concentrated absorption liquid pump determination prevention device according to the present invention.

Figure 3 is an overall configuration of the absorption type cold and hot water heater is applied to the concentrated absorption liquid pump determination prevention device according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: high temperature regenerator 110: low temperature regenerator

120: condenser 130: evaporator

140: absorber 141: rare absorbing liquid receiving

142: pipe 150: low temperature heat exchanger

160: high temperature heat exchanger 181: rare absorption liquid pump

182: concentrated absorption liquid pump 183: connection pipe

184: branch pipe 185: throttle

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

2 shows a partial configuration of the absorption type cold water heater according to the present invention is applied to the absorbent liquid pump determination prevention device, Figure 3 shows the entire configuration of the absorption type cold water heater applied to the concentration absorbent liquid pump determination prevention device according to the present invention.

Absorption-type cold and hot water to which the concentrated absorption liquid pump determination prevention device of the present invention is applied, as shown in Figure 3, the high temperature regenerator 100, the low temperature regenerator 110, the condenser 120, the evaporator 130, One or two absorbers 140, a low temperature heat exchanger 150, and a high temperature heat exchanger 160.

The high temperature regenerator 100 heats the diluted water absorbing liquid supplied to a heat source 101 such as a burner to generate and discharge a refrigerant gas having a high temperature and high pressure. At this time, the exhaust gas discharged to the heat source 101 is heat-exchanged with the rare absorbing liquid supplied to the high temperature regenerator 100 and the waste heat recovery 102, thereby recycling the waste heat to increase the thermal efficiency.

The low temperature regenerator 110 supplies the refrigerant gas supplied from the high temperature regenerator 100 to the high temperature heat exchanger 160 from the high temperature regenerator 100 by a pressure difference between the high temperature regenerator 100 and the low temperature regenerator 110. The refrigerant gas heat-exchanged with the intermediate absorbent liquid supplied through the low temperature is regenerated at low temperature, and the concentrated absorbent liquid is made high.

The condenser 120 heat-exchanges the refrigerant gas supplied from the low temperature regenerator 110 with the cooling water passing through the condenser 120 to form a condensation refrigerant and supplies it to the evaporator 130, wherein the cooling water is heated by heat exchange. To be discharged.

The evaporator 130 has a function of evaporating the condensation refrigerant supplied from the condenser 120 by heat exchange with water passing through the evaporator 130. In this process, the water supplied to the evaporator 130 is cooled by heat exchange with the refrigerant gas to be evaporated, converted into cold water, and discharged. The liquid refrigerant contained in the refrigerant gas is a refrigerant liquid receiver under the evaporator 130. 131 is collected.

The absorber 140 is installed on one side of the evaporator 130 or installed on both sides of the evaporator 130, and the absorber 140 passes through the low temperature heat exchanger 150 from the low temperature regenerator 110. The refrigerant gas evaporated by the evaporator 130 is absorbed into the concentrated solution absorbed in a high concentration to act as a rare absorbent liquid of a thin concentration. A rare water absorbing liquid receiver 141 is installed below the absorber 140, and the rare water absorbing liquid is collected therein.

The low temperature heat exchanger 150 has a function of exchanging the rare absorbent liquid discharged from the rare absorbent liquid receiver 141 by exchanging heat with the concentrated absorbent liquid supplied from the low temperature regenerator 110 to the absorber 140.

The high temperature heat exchanger 160 heat-exchanges the intermediate absorbent liquid of intermediate concentration supplied from the high temperature regenerator 100 side to the low temperature regenerator 110 side by heat-exchanging the rare absorbent liquid discharged from the low temperature heat exchanger 150. ) Will be supplied.

On the other hand, in order to selectively supply the condensation refrigerant to the absorber 140, a pipe for connecting the condenser 120 and the upper part of the absorber 140 is installed, the heating valve 170 for selectively opening and closing the flow path in this pipe. Is installed. In addition, in order to selectively supply the refrigerant collected in the coolant receiver 131 under the evaporator 130 to the rare water receiver 141 under the absorber 140, the coolant receiver 131 and the rare water receiver. A pipe connecting 141 to each other is provided, and a heating valve 171 for selectively opening and closing the flow path is provided in the pipe. In addition, in order to selectively supply the refrigerant gas discharged from the high temperature regenerator 100 to the absorber 140, a pipe connecting the high temperature regenerator 100 and the low temperature regenerator 110 and a pipe connecting the absorber 140 to each other. The pipe is provided with a heating valve 172 for selectively opening and closing the flow path. In addition, in order to selectively supply the intermediate absorbing liquid discharged from the high temperature regenerator 100 to the absorber 140, a pipe connecting the high temperature regenerator 100 (specifically, the high temperature regenerator 100 and the high temperature heat exchanger 160). A pipe connecting the) side and the absorber 140 is installed, and a heating valve 173 for selectively opening and closing the flow path is installed in the pipe.

In addition, in order to bypass the refrigerant collected in the coolant receiver 131 under the evaporator 130 and supply it to the upper part of the evaporator 130 again, the coolant receiver 131 is connected to the upper part of the evaporator 130. The bypass pipe is installed, and the bypass pipe is provided with a refrigerant pump 180 for selectively pumping the refrigerant collected in the refrigerant liquid receiver 131 to supply the upper portion of the evaporator 130. In addition, the pipe 142 connecting the rare water absorbing receiver 141 and the low temperature heat exchanger 150 in the lower part of the absorber 140 has the rare absorbent liquid collected in the rare water absorbing receiver 141 as the low temperature heat exchanger 150. A rare water absorbing pump 181 for pumping selectively is installed.

In addition, the connector 183 connecting the low temperature regenerator 110 and the low temperature heat exchanger 150 to supply the concentrated absorbent liquid from the low temperature regenerator 110 to the absorber 140 via the low temperature heat exchanger 150. There is a concentrated absorption liquid pump 182 for selectively pumping the concentrated absorption liquid.

In the absorbent liquid pump determination prevention device according to the present invention, in the absorption type cold and hot water machine as described above, the low temperature regenerator 110 is supplied to the absorber 140 through the connection pipe 183 and the low temperature heat exchanger 150 side. The concentrated absorption liquid is prevented from being crystallized over the connection pipe 183 and the concentrated absorption liquid pump 182, and includes a branch pipe 184 and a throttling device 185.

The branch pipe 184 is installed to communicate the outlet of the rare absorbing liquid pump 181 and the outlet side of the concentrated absorbing liquid pump 182 of the connection pipe 183. Accordingly, a part of the rare absorbing liquid pumped from the rare absorbing liquid receiver 141 by the driving of the rare absorbing liquid pump 181 is supplied to the low temperature heat exchanger 150, and the other part of the rare absorbing liquid is supplied to the branch pipe 184. It is supplied to the connecting pipe 183 through, and dilutes the concentrated absorbing liquid in the connecting pipe 183 and the concentrated absorbent liquid pump 182.

The throttling device 185 is installed in the branch pipe 184, when supplying the rare absorbing liquid to the connecting pipe 183 through the branch pipe 184, by reducing the rare absorbing liquid by the throttling action, the connection pipe It is supplied to (183).

Therefore, when the absorption cold or hot water operation or stop, the concentrated absorption liquid in the connection pipe 183 is effectively diluted by the supply of the rare absorption liquid, thereby preventing the crystallization of the concentrated absorption liquid in the connection pipe 183 and the concentrated absorption liquid pump 182. Can be.

Next, the operation of the concentrated absorption liquid pump determination device of the absorption type cold and hot water machine according to the present invention configured as described above will be described.

When the rare absorbent liquid supplied to the high temperature regenerator 100 is heated by the operation of the heat source 101, a high temperature and high pressure refrigerant gas is generated, and the refrigerant gas is supplied to the condenser 120 through the low temperature regenerator 110. It condenses by heat exchange with cooling water passing through the condenser 120. In this process, the cooling water is discharged into hot water.

The condensation refrigerant condensed by the condenser 120 is supplied to the evaporator 130 and is converted into a refrigerant gas while being evaporated by heat exchange with water passing through the evaporator 130. The water is changed into cold water and discharged. This condensation refrigerant supply process may be made by the pressure difference between the condenser 120 side and the evaporator 130 side.

The refrigerant gas evaporated as described above is absorbed by the high concentration concentrated absorbent liquid supplied from the low temperature regenerator 110 through the low temperature heat exchanger 150 to the absorber 140 to be converted into a dilute absorbent liquid, and the rare absorbent liquid is absorbed. It is collected in the rare water absorption receiver 141 at the bottom (140).

In the case of heating mode operation, the condensation refrigerant is supplied from the condenser 120 to the absorber 140 when the heating valve 170 is opened, and from the high temperature regenerator 100 when the heating valve 172 is opened. The discharged refrigerant gas is supplied to the absorber 140, and when the concentrated absorbent liquid pump 182 is driven, the concentrated absorbent liquid is supplied to the absorber 140 from the low temperature regenerator 110 through the low temperature heat exchanger 150, and is heated. When the valve 173 is opened, the intermediate absorbent liquid is supplied to the absorber 140 from the high temperature regenerator 100 side. Thus, the refrigerant gas evaporated in the absorbent liquids supplied to the absorber 140 is absorbed into a rare absorbent liquid. .

Meanwhile, the liquid refrigerant collected in the refrigerant gas is collected in the refrigerant liquid receiver 131 under the evaporator 130. The refrigerant collected in the refrigerant liquid receiver 131 is rare when the heating valve 171 is opened. The absorption liquid receiver 141 is supplied to the upper part of the absorber 140 through the bypass pipe from the refrigerant liquid receiver 131 according to the driving of the refrigerant pump 180.

The rare water absorbed by the rare water absorbing receiver 141 is sequentially passed through the low temperature heat exchanger 150 and the high temperature heat exchanger 160. That is, the rare absorbent liquid is heat-exchanged in the low temperature heat exchanger 150 and the concentrated absorbent liquid supplied from the low temperature regenerator 110 to the absorber 140 when the concentrated absorbent liquid pump 182 is driven. The rare absorbent liquid discharged from the heat exchanger is heat-exchanged in the high temperature heat exchanger 160 with the intermediate absorbent liquid supplied from the high temperature regenerator 100 side to the low temperature regenerator 110 side, and then is generated from the heat source 101 to generate the waste heat recovery unit 102. Heat exchange with the exhaust gas passing through is supplied to the high temperature regenerator (100).

On the other hand, when the operation of the absorption chiller or the stop, when the driving of the concentrated absorbent liquid pump 182 is stopped, the connection pipe 183 and the connection pipe connecting the low temperature regenerator 110 and the low temperature heat exchanger 150 ( Concentrated absorbent liquid is retained over the concentrated absorbent liquid pump 182 installed at 183. The concentrated absorbent liquid may be crystallized in the connection pipe 183 and the concentrated absorbent liquid pump 182. However, in the present invention, a part of the rare absorbing liquid pumped from the rare absorbing liquid receiver 141 by the driving of the rare absorbing liquid pump 181 is supplied to the connecting pipe 183 through the branch pipe 184 and the throttling device 185. The dilution of the concentrated absorbent liquid in the connection pipe 183 and the concentrated absorbent liquid pump 182 is performed. Therefore, during operation or stop of the absorption chiller, the concentrated absorbent liquid in the connection pipe 183 and the concentrated absorbent liquid pump 182 is effectively diluted by the supply of the rare absorbent liquid, and thus, in the connection tube 183 and the concentrated absorbent liquid pump 182. Crystallization of the concentrated absorbent liquid can be effectively prevented.

Claims (1)

The high temperature regenerator 100, the low temperature regenerator 110, the condenser 120, the evaporator 130, the absorber 140, the low temperature heat exchanger 150, the high temperature heat exchanger 160, and the high temperature regenerator side have a high concentration. A connection pipe 183 connecting the low temperature regenerator side and the low temperature heat exchanger to supply a concentrated absorption liquid to the absorber via the low temperature heat exchanger, a concentrated absorption liquid pump 182 installed at the connection pipe to pump the concentrated absorption liquid, and the In the absorption absorption pump determination prevention device of the absorption type cold and hot water heater having a rare absorption liquid pump 181 which is installed in the pipe 142 connecting the low temperature heat exchanger and the rare absorption liquid receiving unit 141 in the lower part of the absorber, A branch pipe 184 which connects the outlet of the rare absorbing liquid pump and the outlet side of the concentrated absorbing liquid pump of the connecting pipe to supply the rare absorbing liquid from the rare absorbing liquid pump to the connecting pipe; And Decontamination apparatus for absorption absorption pump of the absorption type cold and hot water heater, characterized in that it comprises a;