JPH07218050A - Noncondensed gas discharging device - Google Patents

Abstract

PURPOSE:To improve hydrogen gas-discharge capacity of a noncondensed gas discharging device. CONSTITUTION:A heat-exchanger 54 to cool a noncondensed gas tank 50 is located in the middle of a refrigerant piping 52 which runs from a condenser 7 to a vaporizer 1 and in which refrigerant liquid in the condenser 7 flows, and an orifice 53 is disposed upper stream from the heat-exchanger. Steam flowing in togetherwith noncondensed gas is cooled and condensed by the heat- exchanger 54 which is arranged in the noncondensed gas tank 50 and through which flow temperature steam flows. Adhesion of steam on the surface of a palladium cell 51, i.e., a hydrogen permeation surface, is suppressed, hydrogen discharge capacity of the palladium cell 51 is maintained, and the increase of noncondensed gas in a device, especially hydrogen gas concentration, is prevented from occurring to stabilize operation of an absorption type freezer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-condensable gas discharge device provided in an absorption refrigerator.

[0002]

2. Description of the Related Art For example, Japanese Utility Model Laid-Open No. 60-111854 discloses a gas extraction device for extracting uncondensed gas in an evaporator or an absorber using an absorption liquid in an absorption refrigerator, and this extraction device. Absorption refrigeration equipped with a gas storage chamber for storing the extracted non-condensable gas, and a hydrogen release pipe made of palladium metal or palladium alloy that is connected to the gas storage chamber and transmits hydrogen in the non-condensed gas to the outside to release it. Machine is disclosed.

[0003]

In the prior art as described above, the refrigerant vapor of the evaporator or the absorber is extracted together with the non-condensable gas such as hydrogen into the gas extraction apparatus during operation of the absorption refrigerator, and the refrigerant vapor is extracted. When the gas flows into the gas storage chamber, the refrigerant vapor adheres to the surface of the hydrogen discharge pipe, and the amount of hydrogen permeation through the hydrogen discharge pipe decreases, resulting in a decrease in the hydrogen discharge capacity. Then, if the state in which the hydrogen discharge capacity is reduced continues for a long time, the pressure in the gas storage chamber rises, the extraction capacity of the gas extraction device also decreases, and the concentration of non-condensed gas in the equipment increases and There is also a problem that a high temperature or a high pressure occurs and an abnormal stop device of the absorption refrigerator operates to cause an abnormal stop.

The present invention ensures the ability to release hydrogen from the gas storage chamber and stabilizes the operation of the absorption refrigerator.

[0005]

In order to solve the above-mentioned problems, according to the present invention, the absorber 2, the high temperature generator 4, the condenser 7 and the evaporator 1 are connected by piping. And a gas extraction device 37 for extracting the non-condensed gas in the machine using the absorption liquid in the machine of the absorption refrigerating machine in which a circulation path of the absorption liquid and the refrigerant is formed, and the non-condensed gas extracted in communication with the gas extraction device In the non-condensable gas discharge device provided with a gas storage chamber 50 for storing hydrogen and a palladium cell 51 communicating with the non-condensable gas tank and transmitting and releasing hydrogen gas in the non-condensed gas, from the condenser 7 to the evaporator 1. A refrigerant pipe 52 through which the refrigerant liquid of the condenser 7 flows is provided, a heat exchanger 54 for cooling the non-condensable gas tank 50 is provided in the middle of the refrigerant pipe, and an orifice 53 is provided upstream of the heat exchanger. Characterized by There is provided a gas discharge device.

According to the second aspect of the present invention, the refrigerant having the refrigerant liquid circulation pump 21 is connected to the refrigerant liquid reservoir in the lower portion of the evaporator 1 and the refrigerant liquid spraying device in the upper portion of the evaporator by pipe connection. A liquid circulation pipe 20 and a refrigerant pipe 61 provided with a heat exchanger 62 that branches from the refrigerant liquid circulation pipe on the outlet side of the refrigerant liquid circulation pump to reach the condenser 7 and cools the noncondensable gas tank 50 midway. And a non-condensable gas discharge device.

Further, according to the invention described in claim 3, the refrigerant liquid having the refrigerant liquid circulating pump 21 is connected in the middle between the refrigerant liquid reservoir in the lower portion of the evaporator and the refrigerant liquid spraying device in the upper portion of the evaporator. The non-condensable gas discharge device is provided with the circulation pipe 20, and the refrigerant liquid circulation pump outlet side pipe of the refrigerant liquid circulation pipe penetrates the non-condensed gas tank 50. Also,
According to the invention described in claim 4, the heat exchanger 54 for cooling the non-condensable gas tank 50 after the refrigerant liquid flowing out from the condenser 7 is evaporated or the refrigerant liquid flowing out from the evaporator flows.
And a gas supply pipe 56 pipe-connected to the non-condensable gas tank 50 and having an opening / closing valve 58 in the middle, and a condensed water discharge pipe 55 pipe-connected to the bottom of the non-condensing gas tank and having an opening / closing valve 57 in the middle. A non-condensable gas discharge device is provided.

According to the fifth aspect of the present invention, the heat exchanger cools the non-condensable gas tank 50 after the refrigerant liquid flowing out of the condenser 7 is evaporated or the refrigerant liquid flowing out of the evaporator 1 flows. And a condensed water discharge pipe 55 having an opening / closing valve 57 on the way to the gas extraction device 37 from the bottom of the non-condensed gas tank 50.

[0009]

According to the first aspect of the present invention, the water vapor that has flown in together with the non-condensable gas is cooled and condensed by the heat exchanger 54 provided in the non-condensed gas tank 50 through which the low-temperature refrigerant vapor flows, and the surface of the palladium cell 51, Adhesion of water vapor to the hydrogen permeable surface can be suppressed, and the hydrogen discharge capacity of the palladium cell 51 can be maintained. As a result, the operation of the absorption chiller can be performed while avoiding an increase in the concentration of non-condensable gas, especially hydrogen gas in the equipment. It becomes possible to stabilize.

According to the second aspect of the invention, the water vapor that has flown in together with the non-condensable gas is cooled and condensed by the heat exchanger 62 provided in the non-condensed gas tank 50 through which the low-temperature refrigerant liquid flows, and the surface of the palladium cell 51. That is, it becomes possible to suppress the adhesion of water vapor to the hydrogen permeable surface and maintain the hydrogen discharge capacity of the palladium cell 51, and the refrigerant liquid whose temperature has risen in the heat exchanger 62 is returned to the condenser 7 to collect in the refrigerant liquid pool. 7
Since it flows to the evaporator 1 together with the refrigerant liquid accumulated in 7,
The refrigerant liquid discharged from the refrigerant pump 21 does not mix with the refrigerant liquid whose temperature has risen by passing through the heat exchanger 62, and the refrigerant liquid discharged from the refrigerant pump 21 hardly rises in temperature in the evaporator 1 as it is. After being sprayed, it becomes possible to maintain the cooling efficiency in the evaporator 1.

Further, according to the third aspect of the invention, the water vapor that has flown in together with the non-condensable gas is cooled and condensed by the heat exchanger 63 which passes through the non-condensed gas tank 50 and the low-temperature refrigerant liquid flows, and the surface of the palladium cell 51 is condensed. That is, it is possible to suppress the adhesion of water vapor to the hydrogen permeable surface and maintain the hydrogen discharge capacity of the palladium cell 51. As a result, the operation of the absorption chiller / heater is avoided while avoiding the increase of the non-condensable gas in the equipment, especially the hydrogen gas concentration. And the total amount of the refrigerant liquid flowing through the refrigerant circulation pipe 20 flows through the heat exchanger 63, so that the amount of condensed steam in the heat exchanger 63 increases and the noncondensable gas tank 5
The amount of water vapor in 0 can be suppressed to an extremely small amount, and as a result, the hydrogen discharge capacity of the palladium cell 51 can be further improved.

According to the invention of claim 4, the condensed water accumulated in the non-condensable gas tank 50 can be discharged to the outside from the bottom of the non-condensed gas tank by switching the opening / closing valves 58 and 59. It is possible to prevent a large amount of condensed water from accumulating in the gas tank 50 and reaching the heat exchanger 54, and to continue the condensation action of water vapor by the heat exchanger 54.
The amount of water vapor in the non-condensable gas tank can be slightly suppressed for a long period of time.

Further, according to the invention of claim 5, there is no need to provide the gas supply pipe 56 and the opening / closing valve 58, the structure can be simplified, and there is no need to provide a pipe or the like for communicating with the outside. It becomes possible to more reliably keep the water-cooling machine confidential and to prevent the infiltration of non-condensable gas from the outside.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment according to claim 1 of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an absorption chiller-heater, which is an absorption refrigerator using water as a refrigerant and a lithium bromide (LiBr) solution as an absorption liquid (solution), where 1 is an evaporator and 2 is an absorber. Reference numeral 3 denotes an evaporator absorber body (hereinafter referred to as a lower body) accommodating the evaporator 1 and the absorber 2, 4 denotes a high temperature regenerator that is equipped with a gas burner 5 and is heated by a high temperature heat source, 6 denotes a low temperature regenerator, and 7 Is a condenser,
Reference numeral 8 is a low temperature regenerator condenser barrel (hereinafter referred to as the upper barrel) that houses the low temperature regenerator 6 and the condenser 7, 9 is a low temperature heat exchanger, 10
Is a high temperature heat exchanger, 11 to 15 are absorbing liquid pipes, 16 is an absorbing liquid pump provided in the middle of the absorbing liquid pipe 11, 17
Reference numeral 19 is a refrigerant pipe, 20 is a refrigerant circulation pipe, 21 is a refrigerant pump, 22 is a gas pipe connected to the gas burner 5,
23 is a heating amount control valve, 24 is an evaporator heat exchanger 25 on the way
Are provided for the cold water, and each is connected as shown in FIG.

Reference numeral 26 is a cooling water pipe, and an absorber heat exchanger 27 and a condenser heat exchanger 28 are provided in the middle of the cooling water pipe 26. Reference numeral 29 is a refrigerant bypass pipe that connects the refrigerant reservoir 30 of the evaporator 1 and the absorbent liquid reservoir 31 of the absorber 2 by piping, 32 is an on-off valve, and 33 is an absorption liquid bypass pipe that connects the absorbent liquid pipe 12 and the absorber 2. , 34 is an on-off valve,
Reference numeral 35 is a refrigerant vapor bypass pipe connecting the refrigerant pipe 17 and the absorber 2, 36 is an on-off valve, and each on-off valve 32, 34,
36 is closed when cold water is supplied and is opened when hot water is supplied.

Reference numeral 37 is a conventionally known non-condensable gas extraction device for separating and storing the non-condensed gas extracted from the absorption chiller / heater. Reference numeral 38 is a container of the non-condensed gas extraction device 37. This container 38 has an extraction chamber 39 in the upper part and a storage chamber 40 in the middle part.
And a separation chamber 41 at the bottom. And the extraction chamber 3
The ejector 42 is provided in 9 and the downflow pipe 39A of the noncondensable gas and the absorbing liquid extends downward from the extraction chamber 39. A discharge end of an absorption liquid supply pipe 42 branched from the discharge side pipe of the absorption liquid pump 16 is opened in the extraction chamber 39 in the middle of the absorption liquid pipe 11. 43 is provided in the middle of the absorption liquid supply pipe 42,
This is an absorption liquid cooler in which part of the cooling water sent to the absorber heat exchanger 27 flows to cool the absorption liquid.

Reference numeral 44 denotes a first extraction pipe having one end opened to the gas phase portion of the absorber 2 and the other end opened to the extraction chamber 39. 45 is one end opened to the gas phase portion of the condenser 7 and the other end is extracted. It is a second bleeder tube that opens to the chamber 39. 46 is a non-condensable gas discharge pipe,
This non-condensable gas discharge pipe 46 has an opening / closing valve 47 on the way,
It is connected to a vacuum pump (not shown). Reference numeral 48 is a connecting pipe, and an opening / closing valve 49 is provided in the middle of the connecting pipe 48, one end of which is connected to the extraction chamber 39 and the other end of which is connected to the non-condensing gas tank 50. A plurality of palladium cells 51 made of palladium, for example, are connected to the non-condensing gas tank 50. Further, 52 is a refrigerant liquid pool 77 of the condenser 7.
From the evaporator 30 to the evaporator 30, a refrigerant evaporating mechanism 53, which is, for example, an orifice, is provided in the middle of the refrigerant tube 52, and the refrigerant tube 52 on the downstream side of the refrigerant evaporating mechanism 53.
Part of the heat passes through the non-condensable gas tank 50 and passes through the heat exchanger 54.
Acts as.

Further, as shown in FIG. 1, a condensed water discharge pipe 55 and a gas supply pipe 56 are connected to the non-condensed gas tank 50, and an opening / closing valve is provided between the condensed water discharge pipe 55 and the gas supply pipe 56. 57 and 58 are provided. Further, the on-off valve 49 is open during the normal operation of the absorption chiller-heater,
The on-off valves 47, 57 and 58 are closed. Further, reference numeral 60 is an absorbent return pipe from the separation chamber 41 to the gas phase portion of the absorber 2.

During the cold water supply operation of the absorption refrigerating machine, the refrigerant evaporated in the high temperature regenerator 4 flows to the condenser 7 via the low temperature regenerator 6 as in the conventional absorption refrigerating machine, and the condenser heat exchanger. After heat exchange with the cooling water flowing through 28 to condense and liquefy, it flows to the evaporator 1 through the refrigerant pipe 19. The refrigerant exchanges heat with the water flowing through the evaporator heat exchanger 24 to evaporate, and the water flowing through the evaporator heat exchanger 25 is cooled by the heat of vaporization.
Then, cold water circulates through the load. Further, the refrigerant evaporated in the evaporator 1 is absorbed by the absorbing liquid in the absorber 2. The absorption liquid, which has absorbed the refrigerant and becomes thin in concentration, is sent to the high temperature regenerator 4 through the low temperature heat exchanger 9 and the high temperature heat exchanger 10 by the operation of the absorption liquid pump 16. The absorbing liquid sent to the high temperature regenerator 4 is heated by the burner 5 to evaporate the refrigerant, and the medium concentration absorbing liquid passes through the high temperature heat exchanger 10 and flows to the low temperature regenerator 6. In the low temperature regenerator 6, the absorption liquid is heated by the refrigerant vapor flowing from the high temperature regenerator 10 through the refrigerant pipe 17, and the refrigerant vapor is further separated to have a high concentration. The absorption liquid having a high concentration is sent to the absorber 2 after being lowered in temperature through the low temperature heat exchanger 9 and is sprayed.

The discharge operation of the non-condensable gas when the absorption refrigerator is operated as described above will be described. Part of the absorbing liquid discharged from the absorbing liquid pump 16 flows into the absorbing liquid pipe 42, the temperature of the absorbing liquid cools in the absorbing liquid cooler 43, is sent to the extraction chamber 39, and is discharged to the ejector 42. In the bleeding chamber 39, hydrogen gas and other non-condensed gas such as oxygen or water vapor in the absorber 2 and the condenser 7 are passed through the first bleeder pipe 44 and the second bleeder pipe 45 by the ejector action of the discharged absorbing liquid. Is extracted. The extracted non-condensable gas flows down the downflow pipe 39A together with the absorbing liquid, and the non-condensing gas separated from the absorbing liquid in the separation chamber 41 is stored in the storage chamber 40.

The non-condensable gas or water vapor stored in the storage chamber 40 flows to the non-condensable gas tank 50 through the connecting pipe 48,
Hydrogen gas of the non-condensed gas is released from the palladium cell 51 to the outside. Further, the liquid refrigerant flowing from the condenser 7 into the refrigerant pipe 52 is evaporated by the refrigerant evaporation mechanism 53 and the heat exchanger 54.
Flows to. Therefore, the steam that has flowed into the non-condensable gas tank 50 is cooled and condensed by the heat exchanger 54.

As described above, the water vapor flowing into the non-condensable gas tank 50 is condensed, and the amount of condensed water in the non-condensable gas tank 50 is gradually increased with the operation of the absorption chiller-heater and the operation of the non-condensable gas extraction device 37. To do. For this reason, the operation manager of the absorption chiller-heater closes the on-off valve 49 and opens the on-off valve 58 when a predetermined period of time has passed or during the periodic inspection of the absorption chiller-heater, and opens, for example, nitrogen gas from the gas supply pipe 56 into the non-condensing gas tank 50. send. Then, by closing the on-off valve 58 and opening the on-off valve 57, the condensed water stored in the non-condensable gas tank 50 is discharged to the outside through the condensed water discharge pipe 55.

After the condensed water is discharged, the downstream vacuum pump is operated for a predetermined time with the opening / closing valve 57 closed and the opening / closing valve 47 closed. Then, the on-off valve 47 and the on-off valve 49 are opened to discharge the nitrogen gas and other gases in the non-condensing gas tank 50 and the connecting pipe 48 through the connecting pipe 48, the storage chamber 40 and the non-condensing gas discharge pipe 46. Then, by closing the opening / closing valve 47, the noncondensable gas again flows into the noncondensable gas tank 50 from the storage chamber 40, the hydrogen gas is discharged in the same manner as described above, and the water vapor is condensed and accumulated in the noncondensable gas tank 50. In addition, the vacuum pump continues to operate for a predetermined time after closing the opening / closing valve 47.

According to the above-described embodiment, the water vapor flowing in together with the noncondensable gas is cooled and condensed by the heat exchanger 54 provided in the noncondensable gas tank 50, and the palladium cell 5
It is possible to suppress the adhesion of water vapor to the surface of No. 1 or the hydrogen permeation surface and maintain the hydrogen discharge capacity of the palladium cell 51. As a result, the non-condensable gas in the equipment, especially the hydrogen gas concentration is prevented from increasing, and the absorption cold / hot water is absorbed. The operation of the machine can be stabilized.

In the above embodiment, the condensed water accumulated in the non-condensable gas tank 50 can be discharged to the outside from the bottom of the non-condensable gas tank by switching the opening / closing valves 49, 58 and 59. It is possible to prevent a large amount of condensed water from accumulating in 50 and reaching the heat exchanger 54. As a result, the condensation action of water vapor by the heat exchanger 54 is continued, and the amount of water vapor in the non-condensed gas tank is slightly suppressed for a long period of time. You can

Note that, for example, the condensed water discharge pipe 55 is connected to the storage chamber 40 of the noncondensable gas extraction device 37 by piping as shown by the alternate long and short dash line. Then, the open / close valve 57 may be opened every predetermined period or at the time of periodical inspection to return the condensed water that has accumulated to the non-condensed gas extraction device 37. In this case,
It is not necessary to provide the opening / closing valve 49, the gas supply pipe 56, and the opening / closing valve 58, the configuration can be simplified, and the confidentiality of the absorption chiller-heater can be further ensured without the need for providing piping or the like communicating with the outside. Can also keep heat exchanger 54
May be installed along the outer wall of the non-condensable gas tank 50, and the wall surface of the non-condensable gas tank 50 may be cooled by heat conduction from the heat exchanger 54 so that the water vapor is condensed on the inner wall.

A second embodiment according to claim 2 of the present invention will be described below with reference to FIG. It should be noted that the configuration, which is not particularly described, is similar to that of the first embodiment, and detailed description thereof will be omitted. Reference numeral 61 denotes a refrigerant pipe that branches from the middle of the discharge side pipe of the refrigerant pump 21 of the refrigerant circulation pipe 20 to reach the vapor phase portion of the condenser 7, and is arranged in the non-condensable gas tank 50 in the middle of the refrigerant pipe 61. A heat exchanger 62 is provided.

When the absorption chiller-heater is operating, the non-condensable gas flows into the non-condensable gas tank 50 and the hydrogen gas is discharged to the outside through the palladium cell 51, as in the first embodiment. In addition, a part of the refrigerant liquid discharged from the refrigerant pump 21 flows into the refrigerant pipe 61, and the refrigerant liquid of, for example, 7 to 8 ° C. flows to the heat exchanger 62. The steam that has flown into the non-condensable gas tank 50 together with the non-condensable gas is heat-exchanged and cooled in the heat exchanger 62 through which the refrigerant liquid flows, is condensed, and gradually accumulates at the bottom of the non-condensable gas tank 50. The refrigerant liquid that has passed through the heat exchanger 62 flows into the condenser 7 and flows into the evaporator 1 together with the refrigerant liquid in the refrigerant reservoir 77.

As described above, the steam flowing into the non-condensable gas tank 50 is condensed, and the amount of condensed water in the non-condensable gas tank 50 gradually increases as the absorption chiller-heater and the non-condensable gas extraction device 37 operate. To do. For this reason, the operation manager of the absorption chiller-heater opens the on-off valve 57 after a predetermined period has elapsed or during the periodic inspection of the absorption chiller-heater, and the non-condensing gas tank 5 is opened.
The condensed water accumulated in 0 flows into the storage chamber 40 of the non-condensed gas extraction device 37 via the condensed water discharge pipe 55. After the condensed water is discharged, the non-condensable gas is again passed from the storage chamber 40 through the communication pipe 48 by closing the opening / closing valve 57.
In the same manner as described above, hydrogen gas is discharged and water vapor is condensed and accumulated in the non-condensed gas tank 50. Here, similarly to the embodiment of claim 1, the non-condensable gas tank 50 is connected to the gas supply pipe 56 having the opening / closing valve 58, the communication pipe 48 is provided with the opening / closing valve 49, and the condensed water discharge pipe 55.
May be opened to the outside to discharge the condensed water to the outside.

The heat exchanger 62 is connected to the non-condensing gas tank 5
0 may be provided along the outer wall, and the wall surface of the noncondensable gas tank 50 may be cooled by heat conduction from the heat exchanger 62 so that water vapor is condensed on the inner wall. According to the above-described embodiment, the water vapor that has flown in together with the non-condensable gas is cooled and condensed by the heat exchanger 62 provided in the non-condensable gas tank 50 through which the low-temperature refrigerant liquid flows, and the water vapor to the surface of the palladium cell 51, that is, the hydrogen permeable surface. Suppresses adhesion of palladium 51
It is possible to maintain the hydrogen discharge capacity of the above, and as a result, it is possible to avoid an increase in the concentration of the non-condensable gas in the equipment, especially the hydrogen gas, and to stabilize the operation of the absorption chiller-heater.

Further, the refrigerant liquid whose temperature has risen in the heat exchanger 62 is returned to the condenser 7 and flows into the evaporator 1 together with the refrigerant liquid accumulated in the refrigerant liquid pool 77, so that the refrigerant liquid discharged from the refrigerant pump 21 becomes Does not mix with the refrigerant liquid that has passed through the heat exchanger 62 and has increased in temperature. As a result, the refrigerant liquid discharged from the refrigerant pump 21 is sprayed as it is in the evaporator 1 with almost no temperature rise, and the cooling efficiency can be maintained in the evaporator 1.

A third embodiment relating to claim 3 of the present invention will be described below with reference to FIG. It should be noted that the configurations that are not particularly described are similar to those of the first and second embodiments, and detailed description thereof will be omitted. As shown by the broken line in FIG. 3, the non-condensable gas tank 5 is provided in the middle of the refrigerant circulation pipe 20.
A heat exchanger 63 is formed by vertically penetrating substantially the center of 0.

During operation of the absorption chiller-heater, the non-condensable gas flows into the non-condensable gas tank 50 and the hydrogen gas is discharged to the outside through the palladium cell 51, as in the first and second embodiments. . Further, the refrigerant liquid of, for example, 7 to 8 ° C. discharged from the refrigerant pump 21 flows into the heat exchanger 63. Then, the steam that has flown into the non-condensable gas tank 50 together with the non-condensable gas is heat-exchanged and cooled in the heat exchanger 63 through which the refrigerant liquid flows, is condensed on the outer wall of the heat exchanger 63 and flows downward to flow in the non-condensed gas tank 50. Gradually accumulates at the bottom of. Further, the refrigerant liquid that has passed through the heat exchanger 63 is sprayed by the evaporator 1.

As described above, the water vapor flowing into the non-condensable gas tank 50 is condensed in the heat exchanger 63 and gradually condensed in the non-condensable gas tank 50 with the operation of the absorption chiller-heater and the operation of the non-condensable gas extraction device 37. The amount of water increases. For this reason, when a predetermined period of time elapses or during periodical inspection of the absorption chiller-heater, the operation manager of the absorption chiller-heater opens the on-off valve 57 to prevent the condensed water accumulated in the non-condensed gas tank 50 from passing through the condensed water discharge pipe 55. It flows into the storage chamber 40 of the condensed gas extraction device 37. After the condensed water is discharged, the on-off valve 57 is closed so that the non-condensed gas flows into the non-condensed gas tank 50 again from the storage chamber 40 through the communication pipe 48, and the hydrogen gas is discharged and the water vapor is condensed as described above. Accumulate in the non-condensing gas tank 50. Here, the gas supply pipe 56 having the open / close valve 58 is connected to the non-condensable gas tank 50 and the open / close valve 49 is provided in the communication pipe 48, as in the embodiments of claims 1 and 2.
The condensed water discharge pipe 55 may be opened to the outside to discharge the condensed water to the outside.

According to the above-described embodiment, the water vapor flowing in together with the non-condensable gas is cooled and condensed by the heat exchanger 63 which passes through the non-condensed gas tank 50 and the low-temperature refrigerant liquid flows, and the surface of the palladium cell 51, that is, the hydrogen permeable surface. It is possible to suppress the adhesion of water vapor to the palladium cell 51 and maintain the hydrogen discharge capacity of the palladium cell 51, and as a result, to prevent the non-condensable gas in the equipment, especially the hydrogen gas concentration from rising, and stabilize the operation of the absorption chiller-heater. You can

The heat exchanger 63 has a refrigerant circulation pipe 20.
Since the entire amount of the refrigerant liquid flowing through the tank flows, the amount of water vapor condensed in the heat exchanger 63 increases, and the amount of water vapor in the non-condensed gas tank 50 can be suppressed to an extremely small amount. As a result, the hydrogen discharge capacity of the palladium cell 51 can be reduced. Can be further improved.

[0037]

The present invention is a non-condensable gas discharge device configured as in the above embodiment, and according to the invention of claim 1,
A heat exchanger for cooling the non-condensable gas tank is provided in the middle of the refrigerant pipe where the refrigerant liquid of the condenser flows from the condenser to the condenser, and since the refrigerant evaporation mechanism is provided upstream of this heat exchanger, The water vapor that has flowed into the non-condensable gas tank together with the non-condensable gas is cooled and condensed by the heat exchanger provided in the non-condensable gas tank and through which the low-temperature refrigerant vapor flows. The discharge capacity can be maintained, and as a result, the operation of the absorption chiller can be stabilized by avoiding an increase in the concentration of non-condensable gas, especially hydrogen gas, in the equipment.

According to the second aspect of the present invention, the refrigerant liquid circulation pump in the middle of the refrigerant liquid circulation pipe connecting the refrigerant liquid reservoir in the lower portion of the evaporator and the refrigerant liquid distribution device in the upper portion of the evaporator is connected. Since a heat exchanger that cools the noncondensable gas tank is provided in the middle of the refrigerant pipe that branches from the refrigerant liquid circulation pipe on the outlet side and reaches the condenser, the steam that flows in together with the noncondensable gas is provided in the noncondensable gas tank. The low-temperature refrigerant liquid is cooled and condensed by the heat exchanger, and the adhesion of water vapor to the surface of the hydrogen discharger, that is, the hydrogen permeation surface can be suppressed to maintain the hydrogen discharge capability of the hydrogen discharger. The operation of the absorption chiller-heater can be stabilized by avoiding an increase in the concentration of the non-condensable gas, especially the hydrogen gas.

Further, since the refrigerant liquid whose temperature has risen in the heat exchanger is returned to the condenser and flows to the evaporator together with the refrigerant liquid accumulated in the condenser, the temperature rise of the refrigerant liquid sprayed in the evaporator can be avoided. As a result, the cooling efficiency can be maintained in the evaporator. Further, according to the invention described in claim 3, the refrigerant in the refrigerant liquid circulation pipe having a refrigerant liquid circulation pump in the lower part of the evaporator and the refrigerant liquid distribution device in the upper part of the evaporator connected by piping. Since the liquid circulation pump outlet side pipe penetrates the non-condensable gas tank, the water vapor flowing into the non-condensable gas tank together with the non-condensable gas is cooled and condensed by the refrigerant liquid circulation pipe that penetrates the non-condensable gas tank and the low-temperature refrigerant liquid flows. , It is possible to suppress the adhesion of water vapor to the surface of the hydrogen discharger, that is, the hydrogen permeation surface, and to maintain the hydrogen discharge capacity of the hydrogen discharger. The operation of the absorption chiller-heater can be stabilized.

Further, since the entire amount of the circulating refrigerant liquid flows through the refrigerant circulation pipe 20 penetrating the noncondensable gas tank, the amount of condensed water vapor in the noncondensable gas tank increases, and the amount of water vapor in the noncondensable gas tank becomes extremely small. As a result, it is possible to further improve the hydrogen discharge capacity of the hydrogen discharger. According to the invention described in claim 4, the heat exchanger for cooling the non-condensable gas tank after the refrigerant liquid flowing out of the condenser is evaporated or the refrigerant liquid flowing out of the evaporator flows into the non-condensable gas tank. Condensed water collected in the non-condensable gas tank because it is equipped with a gas injection pipe that is connected to the pipe and has an on-off valve in the middle, and a condensed water discharge pipe that is connected to the bottom of the non-condensable gas tank and has an on-off valve in the middle The on-off valve can be opened and closed to discharge from the bottom of the non-condensable gas tank to the outside, and a large amount of condensed water can be prevented from reaching the heat exchanger in the non-condensable gas tank. It is possible to keep the amount of water vapor in the non-condensed gas tank slightly suppressed over a long period of time by continuing the condensing action of.

According to the invention described in claim 5, after the refrigerant liquid flowing out of the condenser is evaporated or the refrigerant liquid flowing out of the evaporator flows, a heat exchanger for cooling the non-condensed gas tank is provided. Since it has a condensed water discharge pipe having an opening / closing valve on the way from the bottom of the condensed gas tank to the gas extraction device, it is not necessary to connect a plurality of pipes having an opening / closing valve, and the configuration can be simplified. In addition, since it is not necessary to provide a pipe or the like that communicates with the outside, it is possible to more reliably keep the secret of the absorption refrigerator, and it is possible to suppress a decrease in operating efficiency due to non-condensable gas.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an absorption chiller-heater showing one embodiment of claim 1, claim 4 and claim 5 of the present invention.

FIG. 2 is a schematic configuration diagram of an absorption chiller-heater showing one embodiment according to claims 2 and 5 of the present invention.

FIG. 3 is a schematic configuration diagram of an absorption chiller-heater showing one embodiment relating to claims 3 and 5 of the present invention.

[Explanation of symbols]

 1 Evaporator 2 Absorber 4 High Temperature Regenerator 6 Low Temperature Regenerator 9 Low Temperature Heat Exchanger 10 High Temperature Heat Exchanger 20 Refrigerant Circulation Piping 21 Refrigerant Pump 37 Noncondensable Gas Extractor 48 Communication Pipe 49 Open / Close Valve 50 Noncondensable Gas Tank 51 Palladium Cell 52 Refrigerant pipe 55 Condensed water discharge pipe 56 Gas supply pipe 57 Open / close valve 58 Open / close valve 61 Refrigerant pipe 62 Heat exchanger 63 Heat exchanger

Claims (5)

[Claims] 1. An uncondensed gas in a machine is extracted by using an absorption solution in an absorption refrigerating machine in which an absorber, a generator, a condenser and an evaporator are connected by piping to form a circulation path for the absorption solution and a refrigerant. Gas extraction device, a non-condensable gas tank that communicates with this gas extraction device and stores the extracted non-condensed gas, and a palladium metal or its alloy that communicates with this non-condensed gas tank and allows hydrogen gas in the non-condensed gas to permeate and be released In a non-condensable gas discharge device equipped with a hydrogen discharger made of hydrogen, a refrigerant pipe from the condenser to the evaporator, through which the refrigerant liquid of the condenser flows, is provided, and heat exchange for cooling the non-condensable gas tank in the middle of this refrigerant pipe. A non-condensable gas discharge device, characterized in that a condenser is provided and a refrigerant evaporation mechanism is provided upstream of the heat exchanger. 2. The non-condensable gas in the machine is extracted by using the absorption solution in the absorption refrigerating machine in which an absorber, a generator, a condenser and an evaporator are connected by piping to form a circulation path for the absorption solution and the refrigerant. Gas extraction device, a non-condensable gas tank that communicates with this gas extraction device and stores the extracted non-condensed gas, and a palladium metal or its alloy that communicates with this non-condensed gas tank and allows hydrogen gas in the non-condensed gas to permeate and be released In a non-condensable gas discharge device equipped with a hydrogen discharger made of hydrogen, a refrigerant liquid circulation pipe having a refrigerant liquid circulation pump in the middle of the refrigerant liquid reservoir in the lower part of the evaporator and a refrigerant liquid distribution device in the upper part of the evaporator. When,
Noncondensable gas discharge, characterized in that the refrigerant liquid circulation pipe on the outlet side of the refrigerant liquid circulation pump is branched from the refrigerant liquid circulation pipe to a condenser and a refrigerant pipe provided with a heat exchanger for cooling the noncondensable gas tank is provided on the way. apparatus. 3. The non-condensable gas in the machine is extracted by using the absorption liquid in the absorption refrigerating machine in which the absorber, the generator, the condenser and the evaporator are connected by piping to form a circulation path for the absorption liquid and the refrigerant. Gas extraction device, a non-condensable gas tank that communicates with this gas extraction device and stores the extracted non-condensed gas, and a palladium metal or its alloy that communicates with this non-condensed gas tank and allows hydrogen gas in the non-condensed gas to permeate and be released In a non-condensable gas discharge device equipped with a hydrogen discharger made of hydrogen, a refrigerant liquid circulation pipe having a refrigerant liquid circulation pump in the middle of the refrigerant liquid reservoir in the lower part of the evaporator and a refrigerant liquid distribution device in the upper part of the evaporator. A non-condensable gas discharge device, characterized in that the refrigerant liquid circulation pump outlet side pipe of the refrigerant liquid circulation pipe penetrates the non-condensable gas tank. 4. The non-condensable gas in the machine is extracted by using the absorbent in the machine of the absorption type refrigerator in which the absorber, the generator, the condenser and the evaporator are connected by piping to form a circulation path for the absorbent and the refrigerant. Gas extraction device, a non-condensable gas tank that communicates with this gas extraction device and stores the extracted non-condensed gas, and a palladium metal or its alloy that communicates with this non-condensed gas tank and allows hydrogen gas in the non-condensed gas to permeate and be released In a non-condensable gas discharge device having a hydrogen discharger made of, a heat exchanger for cooling the non-condensable gas tank after the refrigerant liquid flowing out from the condenser is evaporated or the refrigerant liquid flowing out from the evaporator flows,
A non-condensable gas characterized by comprising a gas injection pipe connected to the storage chamber with a switching valve in the middle, and a condensed water discharge pipe connected to the bottom of the non-condensing gas tank with a switching valve in the middle. Ejection device. 5. The non-condensable gas in the machine is extracted by using the absorption solution in the absorption refrigerating machine in which an absorber, a generator, a condenser and an evaporator are connected by piping to form a circulation path for the absorption solution and the refrigerant. Gas extraction device, a non-condensable gas tank that communicates with this gas extraction device and stores the extracted non-condensed gas, and a palladium metal or its alloy that communicates with this non-condensed gas tank and allows hydrogen gas in the non-condensed gas to permeate and be released In a non-condensable gas discharge device having a hydrogen discharger made of, a heat exchanger for cooling the non-condensable gas tank after the refrigerant liquid flowing out from the condenser is evaporated or the refrigerant liquid flowing out from the evaporator flows,
A non-condensable gas discharge device, comprising: a non-condensable gas tank, a bottom part of the non-condensable gas tank, and a condensed water discharge pipe having an opening / closing valve in the middle thereof.