JPH06129727A - Absorption refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to cope with temporary load peaks without making the refrigeration rated capacity correspond to temporary load peaks, that is, without increasing the size of the entire device and increasing manufacturing costs. To do. [Structure] Generator 1, condenser 2, evaporator 4 and absorber 5
In the absorption refrigerating machine provided with, a solution producing system 20 comprising a heater 20c for taking in the solution in the circulating system to produce a crystal and accumulating the solution in the circulating system, and supplying and accumulating the solution. A crystal regeneration generator 22 having a solution regeneration means 21 for resolving crystals to regenerate a high concentration solution is provided, and at the time of high load, the high concentration solution regenerated by the solution regeneration means 21 is supplied to the absorber 5. The capacity adjusting means 23 including the controller 23a for adjusting the absorption capacity is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerating machine, and more particularly to an absorption refrigerating machine having a generator, a condenser, an evaporator and an absorber.

[0002]

2. Description of the Related Art Conventionally, as this type of absorption refrigerating machine, for example, one disclosed in Japanese Patent Laid-Open No. 59-107161 has been proposed. As shown in FIG. It is equipped with a high temperature generator A, a low temperature generator B, a condenser C, an evaporator D, an absorber E, a high temperature heat exchanger F and a low temperature heat exchanger G, and the burner a provided in the high temperature generator A internally A high-temperature refrigerant vapor is generated by heating the dilute solution of 1, and this high-temperature refrigerant vapor is sent to the low-temperature generator B and introduced from the high-temperature generator A through the high-temperature heat exchanger F into the low-temperature generator B. Part of the refrigerant vapor is condensed and liquefied by heat exchange with the intermediate-concentration solution, and the liquid refrigerant is sent to the low-temperature heat exchanger G and cooled in the low-temperature heat exchanger G. It is sent to the condenser C and liquefied. Also,
Refrigerant vapor is generated in the low temperature generator B by heat exchange with the refrigerant vapor, and the refrigerant vapor generated in the low temperature generator B is generated in the high temperature generator A and sent to the low temperature generator B. It is sent to the condenser C together with the refrigerant vapor to be condensed and liquefied, and the condensed liquid refrigerant is sent to the evaporator D to evaporate, and the heat of evaporation thereof cools the water in the cold water pipe H passing through the evaporator D. The refrigerant vapor evaporated in the evaporator D flows into the absorber E via an eliminator (not shown), and the low temperature heat exchanger G passes through the low temperature generator B. It is absorbed by the concentrated solution that is then sent to the absorber E, and this concentrated solution is returned to the high temperature generator A as a dilute solution by absorbing the refrigerant vapor. In FIG. 4, K is a cooling pipe and P is a solution pump.

[0003]

However, the absorption refrigerator as described above has a structure that cannot cope with a cooling load higher than the rated load even if the cooling load exceeds the rated capacity. Therefore, in order to cope with the peak cooling load in the summer in the past, it is necessary to design so as to have the ability to cope with this peak time. However, as a result, there is a problem in that the size of the entire apparatus becomes large and the manufacturing cost becomes high.

An object of the present invention is to provide an absorption refrigerating machine capable of coping with a temporary peak of cooling load without increasing the size of the entire apparatus and increasing the manufacturing cost.

[0005]

In order to achieve the above object, the present invention provides a solution circulation system in an absorption refrigerator having a generator 1, a condenser 2, an evaporator 4 and an absorber 5. , Crystal regeneration means 20 for taking in the solution in the circulation system to generate crystals from the solution and accumulating them, and solution regeneration means 21 for dissolving the accumulated crystals to regenerate a high-concentration solution The generator 22 is provided, and at the time of high load, the high-concentration solution regenerated by the solution regenerating means 21 is supplied to the absorber 5, and the capacity adjusting means 23 for adjusting the absorption capacity is provided.

The solution regenerating means 21 is preferably provided with a nozzle 21c for injecting a solution onto the accumulated crystals.

Further, the crystal regeneration generator 22 is preferably arranged in the body of the generator 1.

Further, the crystal regeneration generator 22 may be provided in the middle of the solution tube 9. Further, the crystal regeneration generator 22 may be provided inside the body of the absorber 5.

[0009]

During the normal rated operation of the absorption refrigerating machine described above, the crystal producing means 20 of the crystal regenerator 22 produces a crystal from the solution flowing through the circulation system and accumulates the crystal, and the solution having a predetermined concentration is dissolved. Rated operation is performed according to. Further, at the time of a temporary load peak, the crystals produced and accumulated by the crystal producing means 20 by the capacity adjusting means 23 are regenerated by the solution regenerating means 21 to be a high concentration solution, and this high concentration solution is absorbed by the absorption. It is sent to the vessel 5 and its absorption capacity is enhanced. Along with this, the evaporation ability by the evaporator 4 is enhanced, and a high load operation corresponding to a temporary load peak is performed. In other words, in the above absorption refrigerator,
Despite setting the refrigerating capacity to a rating, the crystals produced and accumulated by the crystal producing means 20 are regenerated by the solution regenerating means 21 to form a high concentration solution, and this high concentration solution is supplied to the absorber 5. By increasing the absorption capacity and the evaporation capacity of the evaporator 4, it is possible to cope with a temporary load peak, and therefore, the temporary cooling can be performed without increasing the size of the entire apparatus. The load peak can be dealt with, and the manufacturing cost of the absorption refrigerator can be reduced.

When the solution regenerating means 21 is provided with a nozzle 21c for injecting a solution into the accumulated crystals, when the crystals produced and accumulated by the crystal producing means 20 are dissolved during high load operation, the nozzles 21c are used. The solution injection can accelerate the dissolution of crystals by the impact, and the responsiveness of capacity increase can be excellently achieved.

Further, when the crystal regenerator 22 is arranged in the body of the generator 1, the existing equipment, that is, the generator 1 can be effectively used to attach the crystal regenerator 22. The entire structure can be simplified.

Further, when the crystal regenerator 22 is provided in the middle of the solution tube 9, the crystal regenerator 2 is used.
2 can be arranged at any position, and the installation space between each device can be effectively used.

When the crystal regeneration generator 22 is provided in the body of the absorber 5, a high-concentration solution that easily crystallizes immediately absorbs the refrigerant in the absorber 6, so that the crystal is formed in the middle of the circulation system. It is possible to avoid clogging of the pipes due to the connection.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a double-effect absorption refrigerator, which is equipped with a direct-heating high-temperature generator 1A having a burner 1a and a low-temperature generator 1B. The generator 1B and the condenser 2 are provided in the one body 3 having the partition wall 31, and the evaporator 4 having the spraying body 41 on the inner upper side and the spraying body 51 on the inner upper side as well. The absorber 5 and the absorber 5 are housed in a single body 6, and an eliminator 61 is interposed between the evaporator 4 and the absorber 5 inside the body 6.

Then, between the refrigerant vapor region above the high temperature generator 1A and the inner bottom portion of the condenser 2, the refrigerant vapor generated in the high temperature generator 1A is passed through the low temperature generator 1B to the condenser 2 Side is provided with a refrigerant vapor pipe 7 and a high temperature heat exchanger 8 is provided between the refrigerant solution region of the high temperature generator 1A and the inner upper side of the low temperature generator 1B to generate the high temperature. An intermediate solution pipe 9 for sending the solution of the vessel 1A to the low temperature generator 1B side is provided, and between the inner bottom portion of the low temperature generator 1B and the inner upper side of the spray body 51 provided in the absorber 5,
A low temperature heat exchanger 10 is provided in the middle, and a concentrated solution pipe 11 for supplying the concentrated solution stored in the inner bottom portion of the low temperature generator 1B to the upper side of the absorber 5 is provided. Further, a refrigerant liquid pipe 12 for feeding the refrigerant stored in the inner bottom portion of the condenser 2 to the evaporator 4 is provided between the inner bottom portion of the condenser 2 and the evaporator 4, and the evaporator is provided. Between the lower side of 4 and the spray body 41, a refrigerant circulation pipe 14 with a refrigerant pump 13 interposed is provided in the middle, and the inner bottom of the absorber 5 has a solution pump 15 in the middle. , The high and low heat exchangers 8, 1
A dilute solution pipe 16 that passes through 0 to reach the upper side of the high temperature generator 1A is provided.

Further, a cooling pipe 1 extending from the outside of the absorber 5 to the outside through the inside of the absorber 5 and the condenser 2.
A cooling water pipe 18 is provided in the evaporator 4, and the cooling water taken out by the cooling water pipe 18 is used as a cooling source for a room or the like.

In the absorption refrigerating machine described above, first, the high temperature refrigerant vapor is generated by heating the dilute solution charged inside by the burner 1a provided in the high temperature generator 1A, and this refrigerant vapor is After being sent to the low temperature generator 1B via the refrigerant vapor pipe 7 and exchanged heat with the intermediate concentration solution introduced from the high temperature generator 1A to the low temperature generator 1B via the intermediate solution pipe 9, It flows into the condenser 2 and is condensed and liquefied in the condenser 2.

Further, the refrigerant vapor generated in the low temperature generator 1B by heat exchange with the refrigerant vapor is sent to the condenser 2 through the upper gap of the partition wall 31 provided in the body 3, and the high temperature generator. 1A is generated and sent to the low temperature generator 1B, and is condensed and liquefied by the cooling water passing through the cooling pipe 17 together with the refrigerant vapor. Then, the condensed liquid refrigerant is sent to the spraying body 41 of the evaporator 4 through the refrigerant liquid pipe 12, is sprayed inward and downward from the spraying body 41, and comes into contact with the cooling water pipe 18 to evaporate. Also, the condensed liquid refrigerant that has reached the bottom of the evaporator 4 without evaporating while coming into contact with the cooling water pipe 18 is returned to the spraying body 41 by the refrigerant circulation pipe 14 provided with the pump 13, and the cooling is performed. It is sprayed again onto the water pipe 18. Thus, the cooling water passing through the inside of the cooling water pipe 18 is cooled by the evaporation of the refrigerant. For example, when the temperature of the inlet side of the cooling water pipe 18 to the evaporator 4 is about 12 ° C., its outlet side The temperature is 7
It is cooled to about ℃ and used as a heat source during cooling.

In the evaporator 4, the cooling water pipe 18
The refrigerant vapor evaporated by the contact with the refrigerant flows into the absorber 5 through the eliminator 61, and in the absorber 5, the concentrated solution pipe 11 flows from the low temperature generator 1B.
A concentrated solution is supplied via the
1 is sprayed to the inside and below of the absorber 5,
The refrigerant vapor flowing into the absorber 5 by this spraying is absorbed by the concentrated solution, and this concentrated solution becomes a rare solution by absorbing the refrigerant vapor, and the concentrated solution is provided with the pump 15. The diluted solution pipe 16 passes through the high and low heat exchangers 8 and 10 to return it to the high temperature generator 1.

With the above-mentioned structure, the crystal producing means 20 for producing and accumulating crystals from the refrigerant solution in the circulation system in the circulation system of the refrigerant solution for circulating various devices of the absorption refrigerator, and the accumulation A crystal regeneration generator 22 having a solution regenerating means 21 for regenerating a high concentration by dissolving the formed crystals is provided, and a high concentration solution regenerated by the solution regenerating means 21 is supplied to the absorber 5 when the load is high. The capacity adjusting means 23 for adjusting the absorption capacity is provided.

In the embodiment shown in FIG. 1, a lithium bromide (LiBr) solution is used as a refrigerant solution for circulating various devices of the absorption refrigerating machine, and the crystal generation which constitutes the crystal regeneration generator 22 is performed. The means 20 includes the body 3
Solution storage tank 20a on the side of the low temperature generator 1B in
Are arranged side by side integrally, and a heating source mainly composed of a plurality of heaters 20c is arranged in the tank 20a. The heaters 20c heat the lithium bromide solution stored in the tank 20a to remove moisture. By evaporating, a portion of this lithium bromide solution was converted into lithium bromide crystals (LiBr / H
80% by weight or more of 2 O) is accumulated in the tank 20a.

As the solution regeneration means 21 of the crystal regeneration generator 22, a solution pump 21a is provided midway between the inner bottom portion of the low temperature generator 1B and the upper inner side of the solution storage tank 20a. By supplying the solution pipe 21b to the tank 20a through the solution pipe 21b, a part of the lithium bromide solution stored in the inner bottom portion of the low temperature generator 1B is driven by the pump 21a. The tank 2
The lithium bromide crystal produced and accumulated in the liquid 0a is dissolved and regenerated into a high-concentration lithium bromide solution. For example, during the rated operation in which lithium bromide crystals are generated and accumulated in the tank 20a, when the concentration of the lithium bromide solution circulated between the respective devices of the refrigerator is about 62%, the temporary load peak At the time of high load operation corresponding to the above, by dissolving the lithium bromide crystal by the solution regenerating means 21, the lithium bromide solution supplied from the low temperature generator 1B to the absorber 5 side is about 64 to 66%. It is a high-concentration solution of.

The solution pipe 21 facing the inside of the tank 20a
The injection nozzle 21c is provided on the tip side of b.
By doing so, the tank 20a can be operated during high load operation.
When dissolving the lithium bromide crystals generated and accumulated in the crystals, the lithium bromide solution pumped up by the solution pipe 21b is vigorously jetted from the nozzle 21c to the crystals in the tank 20a, whereby Since it is given a shock, it can be dissolved well, and the response of the increased capacity can be improved accordingly.

Further, as the capacity adjusting means 23,
A controller 23a and temperature detection sensors 23b and 23c arranged on the inlet side and the outlet side of the cooling water pipe 18 to the evaporator 4 are provided, and these sensors 23b and 2c are provided.
3c is connected to the input side of the controller 23a, and the solution pipe 21 is connected to the output side of the controller 23a.
Output from the controller 23a when the solution pump 21a provided in the middle of b is connected and the temperature difference detected by each of the sensors 23b and 23c is above a certain level and it is determined that the cooling load peak state is reached. At the pump 2
1a is driven to supply the lithium bromide solution pumped up by the solution pipe 21b from the nozzle 21c to the tank 20.
A high concentration lithium bromide solution is regenerated by injecting the lithium bromide crystals generated and accumulated in a, and the high concentration lithium bromide solution is overflowed from the tank 20a to the low temperature generator 1B side, The low temperature generator 1B
From the above, the absorption capacity of the absorber 5 is increased by supplying it to the absorber 5 through the concentrated solution pipe 11.

Next, the operation of the absorption refrigerator having the above structure will be described. First, when the operation is stopped, the solution pump 21a is driven to store the lithium bromide solution in the low temperature generator 1b through the solution pipe 21b in the solution tank 20a constituting the crystal producing means 20. Yes, the lithium bromide solution in the tank 20a is heated by the heaters 20c, water is evaporated by this heating, and the lithium bromide solution becomes lithium bromide crystals and is accumulated in the tank 20a. ,As a result,
When the load is normal, rated operation is performed with a solution of a predetermined concentration (about 62%).

Then, the evaporator 4 of the cooling water pipe 18
Detection sensor 2 disposed on the inlet side and the outlet side of the
When the temperature difference detected by 3b and 23c exceeds a certain level and the load reaches a peak state, each sensor 23
The controller 23a based on the detection results of b and 23c
The pump 21a that constitutes the solution regenerating means 21 is driven by the output from the lithium bromide solution in the low temperature generator 1B, and the lithium bromide solution in the low temperature generator 1B is supplied to the tip nozzle 21 of the solution pipe 21b.
The lithium bromide crystals produced and accumulated in the tank 20a are injected from c, and the lithium bromide crystals are dissolved to form a high concentration lithium bromide solution (about 64 to 66%),
The high-concentration lithium bromide solution is supplied from the tank 20a to the absorber 5 via the concentrated solution pipe 11 to enhance the absorption capacity of the absorber 5, that is, in the evaporator 4. The absorption capacity of the absorber 5 for the refrigerant vapor that is evaporated by the contact with the cooling water pipe 18 and flows into the absorber 5 side is enhanced, and as a result, the evaporator 4
The evaporation capacity of the cooling water pipe 18 is also enhanced, and the evaporation effect on the cooling water pipe 18 is promoted.
Capacity), high-load operation capable of handling the load peak is performed.

In the absorption refrigerating machine described above, the lithium bromide crystal produced and accumulated by the crystal producing means 20 is regenerated by the solution regenerating means 21 in spite of its refrigerating capacity being rated. This is a lithium bromide solution, and this high-concentration lithium bromide solution is supplied to the absorber 5 to increase the absorption capacity, and the evaporation capacity of the evaporator 4 can be increased to cope with a temporary load peak. Therefore, it is possible to perform a high load operation corresponding to a temporary cooling load peak while reducing the manufacturing cost of the absorption chiller without increasing the size of the entire device as in the conventional case. Of.

Further, as shown in the above embodiments, the crystal generating means 20 constituting the crystal regenerator 22 is provided on the side of the body 3 which houses the condenser 2 and the low temperature generator 1B. By arranging the solution storage tank 20a in parallel with the low temperature generator 1B, a part of the crystal regenerator 22 can be disposed by effectively utilizing the existing equipment, that is, the body 3. The structure can be simplified.

Further, the crystal regenerator 22 shown in FIG.
As shown in FIG. 5, it may be provided in the middle of the solution pipe connecting each device of the refrigerator. That is, in the structure shown in FIG. 2, a solution container 91 is provided in the middle of the intermediate solution pipe 9 that connects the high-temperature generator 1A and the low-temperature generator 1B, and the crystal regeneration generation is performed in the container 91. The tank 20a of the crystal producing means 20 constituting the container 22 is arranged in an isolated manner, the heater 20c is provided in the tank 20a, and the solution pipe 2 having the solution pump 21a at the bottom of the accommodating portion 91.
1b is connected, and the tip nozzle 21c of the solution pipe 21b is made to face the tank 20a. It should be noted that the tank 20a and the solution storage portion 91 may communicate with each other in an overflowable manner as in the embodiment shown in FIG.
Then, an overflow pipe 93 having an opening / closing valve 92 is provided in the tank 20a. When it is provided in the middle of the solution tube as shown in FIG. 2, the crystal regenerator 22 can be arranged at a free position, and the installation space can be effectively utilized. Further, the embodiment shown in FIG. Although the crystal regenerator 22 is provided in the intermediate solution pipe 9 connecting the high temperature generator 1A and the low temperature generator 1B, it is provided in the middle of the concentrated solution pipe 11 connecting the low temperature generator 1B and the absorber 5. Good. When provided in the middle of the concentrated solution pipe 11, the low temperature heat exchanger 10
Downstream is preferred.

Further, the crystal regeneration generator 22 has the body 6 in which the evaporator 4 and the absorber 5 are installed as shown in FIG.
You may arrange | position in it. That is, in the structure shown in FIG. 3, the receiver 52 is provided inside the body 6 on the upper side of the spraying body 51 provided in the absorber 5, and the concentrated solution pipe 11 is provided on the upper side of the receiver 52. The lithium bromide solution supplied from the concentrated solution tube 11 is sent to the receiving body 52 so that the tip of the solution is supplied to the receiving body 52, and the lithium bromide solution overflows from the receiving body 52 and is supplied to the spraying body 51. The tank 20a of the crystal producing means 20 constituting the crystal regenerator 22 is integrally provided on one side of the inside of 52, and the heater 20c is provided in the tank 20a, while the solution is provided at the bottom of the receiver 52. A solution pipe 21b having a pump 21a is connected so that the tip nozzle 21c of the solution pipe 21b faces the tank 20a and the tank 20a can overflow into the receiver 52. In doing so, the tank 20a of the crystal producing means 20 is set to the body 6
Since the lithium bromide solution of high concentration, which is likely to crystallize, is immediately sprayed from the spraying body 51 and absorbs the refrigerant, since it is arranged inside the container and close to the upper position of the absorber 5, It is possible to prevent the lithium bromide solution from being crystallized or clogged during the process. In each of the above embodiments, the double-effect absorption refrigerator using the high-temperature generator 1A and the low-temperature generator 1B is shown. However, in the present invention, a single-effect absorption refrigerator is used. It can also be applied.
The solution is stored in the tank 20a of the crystal regenerator 22 during operation, but the heater 20
It is preferable to energize c to heat and crystallize it while the operation is stopped, and it is preferable to use midnight power.
Further, although the heater 20c uses an electric heater,
Other heat sources may be used.

Further, when the cooling load reaches the load peak above the rated load, temperature detection sensors 23b and 23c are provided on the inlet and outlet sides of the cooling water pipe 18 with respect to the evaporator 4, and the temperature difference between the inlet and outlet temperatures (usually 1-2). The temperature of the cooling water outlet side is detected, and it is determined that the load peak occurs when the temperature of 7 ° C. in the steady state reaches 10 ° C., and the solution pump 21a is controlled. You may.

Further, the solution pump 21a may be a constant capacity pump, but may be a variable capacity pump capable of controlling the capacity adjustment.

[0033]

As described above, according to the present invention, in an absorption refrigerator having a generator 1, a condenser 2, an evaporator 4 and an absorber 5, a solution circulation system is provided in the circulation system. A crystal regeneration generator 22 having a crystal generating means 20 for taking in the solution of (1) and generating and accumulating crystals from the solution, and a solution regenerating means 21 for dissolving the accumulated crystals to regenerate a high-concentration solution is provided. At the same time, when the load is high, the capacity adjusting means 23 for supplying the high-concentration solution regenerated by the solution regenerating means 21 to the absorber 5 to adjust the absorption capacity is provided. Even if the capacity corresponding to the above is not set, at the time of a temporary load peak, the crystal regenerated by the solution regenerating means 21 regenerates the crystal generated and accumulated in the crystal regenerating means 20 by the capacity adjusting means 23 to obtain a high concentration solution, This highly concentrated solution It is possible to cope with a temporary load peak by supplying it to the absorber 5 to enhance the absorption capacity and also to enhance the evaporation ability by the evaporator 4, and therefore, as in the conventional case, the entire apparatus can be large-sized. The absorption refrigerating machine can be manufactured at a low cost by responding to a temporary cooling load peak without causing a change.

Further, the solution regenerating means 21 is provided with a nozzle 21c for injecting a solution onto the accumulated crystals, so that when the crystals generated and accumulated by the crystal generating means 20 are dissolved during high load operation, the nozzle 21c is used. By injecting the solution from the above, the dissolution of the crystals can be promoted by the impact, and the responsiveness of the capacity increase can be excellently performed.

Furthermore, by disposing the crystal regenerator 22 in the body of the generator 1, it is possible to attach the crystal regenerator 22 by effectively utilizing the existing equipment, that is, the generator 1. Therefore, the entire structure can be simplified.

By providing the crystal regenerator 22 in the middle of the solution tube 9, the crystal regenerator 2 is provided.
2 can be arranged at any position, and the installation space between each device can be effectively used.

Further, by providing the crystal regeneration generator 22 in the body of the absorber 5, a high-concentration solution that easily crystallizes immediately absorbs the refrigerant in the absorber 5, so that the circulation system is in the middle. It is possible to avoid crystallization and clogging of the pipe.

[Brief description of drawings]

FIG. 1 is a piping diagram showing an absorption refrigerator according to the present invention.

FIG. 2 is a piping diagram showing another embodiment.

FIG. 3 is a piping diagram showing another embodiment of the present invention.

FIG. 4 is a piping diagram showing a conventional absorption refrigerator.

[Explanation of symbols]

 1 Generator 2 Condenser 4 Evaporator 5 Absorber 9 Solution Tube 20 Crystal Generation Means 21c Nozzle 21 Solution Regeneration Means 22 Crystal Regeneration Generator 23 Capacity Adjustment Means

Claims (5)

[Claims] 1. An absorption refrigerating machine comprising a generator 1, a condenser 2, an evaporator 4 and an absorber 5, wherein the solution in the circulation system is taken into the solution circulation system. A crystal regeneration generator 22 having a crystal generation means 20 for generating and accumulating crystals from the above and a solution regeneration means 21 for dissolving the accumulated crystals to regenerate a high-concentration solution is provided, and at the time of high load, the solution An absorption refrigerator comprising a capacity adjusting means 23 for supplying the high-concentration solution regenerated by the regenerating means 21 to the absorber 5 to adjust the absorption capacity. 2. The absorption refrigerator according to claim 1, wherein the regenerating means 21 includes a nozzle 21c for injecting a solution into the accumulated crystals. 3. An absorption chiller according to claim 1, wherein the crystal regeneration generator 22 is arranged in the body of the generator 1. 4. The absorption refrigerator according to claim 1, wherein the crystal regeneration generator 22 is provided in the middle of the solution pipe 9. 5. The absorption refrigerator according to claim 1, wherein the crystal regeneration generator 22 is provided in the body of the absorber 5.