JP4879125B2 - Absorption refrigerator - Google Patents

Description

  The present invention is provided with an absorbing liquid spraying means for spraying the absorbing liquid as droplets on the upper side of the absorber body provided with an introduction path for introducing the refrigerant vapor connected to the evaporator on the lateral side, and supplies the absorbing liquid spraying means to the absorbing liquid spraying means A supercooler is provided to supercool the absorbing liquid before being absorbed, and an intermediate tray that receives the droplets of the absorbing liquid sprayed from the absorbing liquid spraying means and absorbing the refrigerant vapor is installed vertically below the absorbing liquid spraying means. It is related with the absorption refrigeration machine which was provided in multiple stages, and was disperse | distributing the absorption liquid dispersion | spreading hole which disperse | distributes the received absorption liquid and distribute | spreads it as a droplet on an intermediate tray.

As an absorber of an absorption refrigerator, a so-called cooling type absorber is known in which a cooling means is provided in the absorber body, and the absorbing liquid whose temperature has risen due to heat generated during absorption of refrigerant vapor in the absorber is cooled. ing.
However, since the structure is complicated and a dedicated heat exchanger is incorporated in the absorber body, there is a disadvantage that it is expensive.

In order to avoid such inconvenience, a so-called adiabatic absorber that can use an air heat exchanger used for a general-purpose heat exchanger or a packaged air conditioner as a subcooler is advantageous. Something like that is known.
That is, the refrigerant liquid collected in the receiving tray provided over almost the entire length of the body in the sealed container made of the hollow body is passed through the conduit to the spraying device by the refrigerant pump provided in the conduit, and the evaporator located above the receiving tray. It is comprised so that it may spread on the pipe outer surface of a pipe group. A reservoir of an absorbing solution such as an aqueous solution of lithium bromide is provided at the lower part of the sealed container, and an absorber is configured by providing a plurality of trays having a plurality of through holes at the upper part of the reservoir with a predetermined interval. A spraying device is provided in the upper space of the absorber, and the absorbing liquid is supplied from the reservoir to the absorbing air cooling unit by an absorbing liquid pump provided in the pipe, and then supplied to the spraying device through the pipe. The refrigerant vapor from the evaporator is absorbed by the absorption liquid (see Patent Document 1).
Japanese Patent Publication No. 60-23264

However, as described above, while the absorbing liquid is sprayed from the spraying device and freely dripped onto the tray and further onto the lower tray, the liquid droplet of the absorbing liquid absorbs the refrigerant vapor, but the liquid droplet dropped from the tray. The total amount of droplets is determined by the diameter of the spray holes formed in the tray, the total number of spray holes, and the height of the absorbing liquid accumulated in the tray, the so-called liquid depth. The Therefore, the depth of the tray cannot be reduced, the height of the outer peripheral wall protruding in the vertical direction at the outer peripheral edge cannot be reduced, and the refrigerant vapor introduction passage is narrowed due to the outer peripheral wall of the tray, and the refrigerant into the absorbing liquid There was a drawback that the absorption performance of the resin deteriorated.
In addition, it is necessary to secure a refrigerant vapor introduction passage between the height of the outer peripheral wall and the top of the outer wall and the bottom downward surface of the tray vertically above it, and the interval between the trays cannot be reduced. There was a drawback that could not be increased.

  The present invention has been made in view of such circumstances, and the invention according to claim 1 is a simple improvement, but allows the refrigerant vapor to be smoothly introduced so as to absorb the refrigerant in the absorption liquid. The invention according to claim 2 aims to enable the refrigerant vapor to be introduced more smoothly by a rational configuration, and the invention according to claim 3 provides an intermediate tray. It is an object of the present invention to make it possible to satisfactorily drop absorption liquid droplets from the entire intermediate tray regardless of the inclination. The invention according to claim 4 aims to improve the refrigerating capacity by increasing the amount of refrigerant vapor introduced into the absorber by improving the evaporation performance in the evaporator, and the invention according to claim 5. The purpose of the invention is to allow the refrigerant vapor to flow out more smoothly and to be introduced into the absorber with a rational configuration, and the invention according to claim 6 provides an intermediate for the evaporator regardless of the inclination of the intermediate tray for the evaporator. An object of the present invention is to make it possible to further improve the refrigerating capacity by further dropping the refrigerant liquid droplets from the entire tray to further improve the evaporation performance.

In order to achieve the above-described object, the invention according to claim 1
An absorber body provided with an introduction path for introducing refrigerant vapor connected to the evaporator on a lateral side surface, an absorbing liquid spraying means provided on an upper part of the absorber body for spraying an absorbing liquid as droplets, and the absorption A supercooler for supercooling the absorption liquid before being supplied to the liquid spraying means, and a plurality of stages arranged vertically below the absorbent spraying means and sprayed from the absorbent spraying means to absorb the refrigerant vapor An absorption tray having an intermediate tray for receiving the droplets of the absorption liquid, and having dispersed the absorption liquid spray holes for dispersing the received absorption liquid and spraying the liquid droplets on the intermediate tray,
The refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray is configured as an inclined surface that becomes higher toward the upstream side.

(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 1, the liquid droplets of the absorbing liquid sprayed from the absorbing liquid spraying means are received by the intermediate tray, and further, the liquid droplets are dropped from the intermediate tray to the lower intermediate tray. Dripping, reducing the height of gravity acceleration, lengthening the time required for dripping to the lowest end as a whole, and introducing the refrigerant vapor by the inclined surface compared to the conventional vertical wall A large amount of the refrigerant vapor can be smoothly introduced from the portion where the passage cross-sectional area is increased, the contact time with the refrigerant vapor can be lengthened, and the amount of the refrigerant vapor to be contacted can be increased. Also, after mixing droplets whose surface absorption liquid concentration has decreased due to absorption of refrigerant vapor, they can be dropped again as droplets to increase the concentration of the absorption liquid on the droplet surface, The natural dripping distance can be shortened and the moving distance in the horizontal direction can be shortened by receiving the force in the flow direction of the refrigerant vapor.
Therefore, the refrigerant absorption performance of the absorbing liquid can be improved by allowing the refrigerant vapor to be smoothly introduced while being a simple improvement in which the refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray is configured as an inclined surface.
In addition, compared to the conventional vertical wall, even if the interval between the intermediate trays is reduced, the passage cross-sectional area for introducing the refrigerant vapor can be sufficiently secured, so the number of intermediate trays can be increased, and the refrigerant of the absorbing liquid can be increased. Absorption performance can be improved.

In order to achieve the above-described object, the invention according to claim 2
The absorption refrigerator according to claim 1,
The inner side of the inclined surface of the intermediate tray touches a circle whose radius is the distance between the outer peripheral edge of the bottom downward surface of the intermediate tray vertically above and the liquid level of the set liquid depth of the absorbing liquid in the steady state of the intermediate tray. Configure as follows.
The amount of absorption liquid supplied to the intermediate tray is substantially constant in the steady state, and the amount of opening that is dropped from the intermediate tray is formed based on the supply amount of absorption liquid in the steady state. The liquid depth in the case of balancing is determined from the difference between the opening amount and the head difference depending on the liquid depth in the intermediate tray and the supply amount of the absorbing liquid from the absorbing liquid spray hole to the intermediate tray. The liquid depth at this time is referred to as the set liquid depth of the absorbing liquid in the steady state of the intermediate tray (hereinafter the same).

(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 2, the refrigerant has the same cross-sectional area as the passage cross-sectional area of the refrigerant vapor between the lower surface of the intermediate tray and the liquid level of the absorbing liquid in the intermediate tray immediately below the intermediate tray. Secure at the place where steam is introduced.
Therefore, the rational configuration of the inclined surface in consideration of the set liquid depth can smoothly introduce the refrigerant vapor without being obstructed by the outer peripheral wall of the intermediate tray, and the interval in the vertical direction of the intermediate tray can be reduced. Thus, the dropping speed of the droplets of the absorbing liquid can be reduced, and the absorption performance of the refrigerant into the absorbing liquid can be improved more favorably.

In order to achieve the above-described object, the invention according to claim 3
In the absorption refrigerator according to claim 1 or 2,
In the intermediate tray, vertical and horizontal partitions that are equal to or lower than the set liquid depth of the absorbing liquid in the steady state of the intermediate tray are provided so as to suppress the horizontal flow of the absorbing liquid due to the inclination of the bottom surface. .

(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 3, even if the intermediate tray is tilted due to vibration or the like, the flow of the absorbing liquid is suppressed by the partition, and the absorbing liquid is located on the outer periphery on one side of the intermediate tray. It is possible to avoid a situation in which the absorbing liquid is not dripped from the absorbing liquid spray hole on the outer peripheral edge side on the other side while being concentrated on the edge side.
Therefore, it is possible to avoid a situation in which the absorbing liquid is not dripped from a part of the intermediate tray, and it is possible to drop the absorbing liquid droplets well from the entire intermediate tray regardless of the inclination of the intermediate tray. The absorption performance to the absorbing liquid can be further improved.

In order to achieve the above-described object, the invention according to claim 4
In the absorption refrigerator according to any one of claims 1, 2, and 3,
The evaporator is for a refrigerant liquid spraying means for spraying the refrigerant liquid as droplets, and for an evaporator for receiving the refrigerant liquid sprayed from the refrigerant liquid spraying means provided in multiple stages vertically below the refrigerant liquid spraying means. An intermediate tray, and a refrigerant liquid spray hole for dispersing the received refrigerant liquid and spraying it as droplets on the intermediate tray for the evaporator, and an outer peripheral wall of the intermediate tray for the evaporator The refrigerant vapor outflow side is configured as an inclined surface that becomes higher toward the downstream side.

(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 4, the refrigerant liquid droplets sprayed from the refrigerant liquid spraying means are received by the intermediate tray for the evaporator, and further for the lower evaporator from the intermediate tray for the evaporator. Drop it as a drop on the intermediate tray, reduce the height that receives the gravitational acceleration, increase the time required to drop to the lowest end as a whole, and by the inclined surface compared to the vertical wall A large amount of the refrigerant vapor can smoothly flow out from the portion where the passage cross-sectional area through which the refrigerant vapor flows out is increased, and the amount of the refrigerant vapor introduced into the absorber can be increased.
Therefore, it is possible to improve the refrigerating capacity by increasing the evaporation performance in the evaporator and increasing the amount of refrigerant vapor introduced into the absorber.

In order to achieve the above-described object, the invention according to claim 5
The inner side of the inclined surface of the evaporator intermediate tray is the distance between the outer peripheral edge of the bottom downward surface of the vertically upper evaporator intermediate tray and the liquid level of the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray. It is configured so as to touch a circle having a radius.
The amount of refrigerant liquid supplied to the evaporator intermediate tray is substantially constant in the steady state, and based on the amount of refrigerant liquid supplied in the steady state, a refrigerant liquid spray hole is formed and dropped from the evaporator intermediate tray. When the amount of opening is specified and the amount of refrigerant liquid in the intermediate tray for evaporator is different from the head difference due to the liquid depth in the intermediate tray for evaporator and the amount of refrigerant liquid supplied from the refrigerant liquid spray hole to the intermediate tray for evaporator, The depth will be determined. The liquid depth at this time is referred to as the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray (hereinafter the same).

(Action / Effect)
According to the structure of the absorption refrigerator of the invention according to claim 5, the passage cross-sectional area of the refrigerant vapor between the lower surface of the evaporator intermediate tray and the liquid level of the refrigerant liquid in the evaporator intermediate tray immediately below the evaporator intermediate tray is the same. A cross-sectional area is secured at the outflow location of the refrigerant vapor.
Therefore, with a rational configuration in which the inclined surface is configured in consideration of the set liquid depth, the refrigerant vapor can flow out smoothly and be introduced into the absorber without being disturbed by the outer peripheral wall of the evaporator intermediate tray. The interval in the vertical direction of the intermediate tray can be reduced, the dropping speed of the liquid droplets can be reduced, and the evaporation performance can be improved more favorably.

In order to achieve the above object, the invention according to claim 6 provides:
In the absorption refrigerator according to claim 4 or 5,
In the evaporator intermediate tray, vertical and horizontal partitions that are equal to or lower than the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray are provided so as to suppress the horizontal flow of the refrigerant liquid due to the inclination of the bottom surface. And configure.
There is an absorption refrigerator.

(Action / Effect)
According to the configuration of the absorption refrigerator of the invention according to claim 6, even if the intermediate tray for the evaporator is inclined due to vibration or the like, the flow of the refrigerant liquid is suppressed by the partition, and the refrigerant liquid is one of the intermediate trays for the evaporator. It is avoided that the refrigerant liquid concentrates on the outer peripheral edge side of the side and the refrigerant liquid is not dropped from the refrigerant liquid spraying hole on the outer peripheral edge side of the other side.
Therefore, it is possible to avoid occurrence of a situation in which the refrigerant liquid is not dripped from a part of the intermediate tray for the evaporator, and the liquid droplets of the refrigerant liquid are excellent from the entire intermediate tray for the evaporator regardless of the inclination of the intermediate tray for the evaporator. The evaporating performance can be further improved and the refrigerating capacity can be further improved.

As is apparent from the above description, according to the configuration of the absorption refrigerator of the invention according to claim 1, the absorption liquid droplets sprayed from the absorption liquid spraying means are received by the intermediate tray, and further, the intermediate tray From the bottom to the lower intermediate tray, reducing the height of gravitational acceleration, increasing the time required to drop to the lowest end as a whole, and the inclined surface of the conventional vertical wall Compared to the case, a large amount of refrigerant vapor can be smoothly introduced from a portion where the passage cross-sectional area for introducing the refrigerant vapor is increased, so that the contact time with the refrigerant vapor can be extended and the amount of refrigerant vapor to be brought into contact can be increased. Also, after mixing droplets whose surface absorption liquid concentration has decreased due to absorption of refrigerant vapor, they can be dropped again as droplets to increase the concentration of the absorption liquid on the droplet surface, The natural dripping distance can be shortened and the moving distance in the horizontal direction can be shortened by receiving the force in the flow direction of the refrigerant vapor.
Therefore, the refrigerant absorption performance of the absorbing liquid can be improved by allowing the refrigerant vapor to be smoothly introduced while being a simple improvement in which the refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray is configured as an inclined surface.
In addition, compared to the conventional vertical wall, even if the interval between the intermediate trays is reduced, the passage cross-sectional area for introducing the refrigerant vapor can be sufficiently secured, so the number of intermediate trays can be increased, and the refrigerant of the absorbing liquid can be increased. Absorption performance can be improved.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an overall schematic configuration diagram showing an embodiment 1 of an absorption refrigerator according to the present invention, and exhaust heat (engine cooling water) from an engine cooling unit of a gas engine (not shown) is supplied as a heating medium. The regenerator 1 contains a lithium bromide aqueous solution (absorbing liquid) that can be boiled by engine cooling water (for example, a temperature of 85 ° C.) under a low pressure, using water as a refrigerant and lithium bromide as an absorbent. .

  A condenser 2 is connected to the regenerator 1 through a first pipe 3 so as to supply refrigerant vapor separated from the absorbent, and the absorber 5 is connected to the regenerator 1 through a second pipe 4. Is connected to the condenser 2 via the third pipe 6, and the absorber 5 and the evaporator 7 communicate with each other via an eliminator 8 that forms a refrigerant vapor introduction path. The absorption refrigerator is connected and configured.

  The condenser 2 includes a heat exchange pipe 9 with fins through which refrigerant vapor from the regenerator 1 flows, a fan 10 that supplies outside air to the heat exchange pipe 9, and a liquid reservoir 11. The refrigerant liquid is condensed by air cooling, the liquefied refrigerant liquid is stored in the liquid reservoir 11, and the liquefied refrigerant liquid is supplied to the evaporator 7.

  The evaporator 7 includes a refrigerant liquid reservoir 13 provided with a spray nozzle 12, and an evaporator intermediate tray that is provided in multiple stages in the vertical direction below the spray nozzle 12 and receives the refrigerant liquid sprayed from the spray nozzle 12. 14. The above-described spray nozzle 12 for spraying the coolant liquid and the coolant liquid reservoir 13 are referred to as coolant liquid spraying means.

A circulation pipe 17 including a refrigerant pump 15 and a cold heat extraction heat exchanger 16 is connected to the lower portion of the evaporator 7 and the liquid reservoir portion 13.
A refrigerant inlet pipe 18 and a refrigerant outlet pipe 19 for a gas heat pump are connected to the heat exchanger 16 for extracting cold heat, and the refrigerant liquid is evaporated and cooled along with absorption of the refrigerant by the absorbing liquid in the absorber 5, and the cooling refrigerant The refrigerant for the gas heat pump is cooled by the liquid.

  The absorber 5 includes an absorbing liquid spraying means 21 on an upper part of an absorber body 20 that is integrated with the evaporator 7. 2 is a partially broken exploded perspective view of FIG. 2, a plan view of the tray of FIG. 3, and a partially omitted cross-sectional view of FIG. 4 (a partially omitted AA line enlarged cross-sectional view of FIG. 3). As shown in FIG. 2, the spray holes 23 are distributed and arranged on the bottom surface of the tray 22.

The tray 22 is filled with uneven filling material 25 in three steps and alternately in the uneven direction via a support member 24 as a spacer at the bottom. In the filler 25, through holes 26 are formed in a dispersed manner at the bottoms of the recesses (the through holes are not shown in FIG. 2).
A spray nozzle 27 is provided above the filler 25, and the spray nozzle 27 and the lower part of the absorber 5 are connected via a fourth pipe 30 having an absorption liquid pump 28 and a supercooler 29 interposed therebetween. The refrigerant is supercooled while circulating the absorption liquid, the amount of refrigerant absorbed by the absorption liquid is increased, and the absorption liquid is sprayed on the filler 25 to increase the liquid depth in the tray 22 in the horizontal direction. The absorbing liquid is supplied after being dispersed, and the liquid can be dropped from the absorbing liquid spraying hole 23 in a droplet state. Reference numeral 29 a denotes a fan of the subcooler 29.

  In the tray 22, the absorbing liquid spraying holes 23 are dispersed and arranged so as to be distributed in a dense state in the flow direction of the refrigerant vapor introduced from the eliminator 8 and in a sparse state in the horizontal direction perpendicular to the flow direction. The absorption performance can be improved by increasing the contact area with the droplets without hindering the flow.

  A fifth pipe 31 is connected across the portion of the fourth pipe 30 between the absorbent pump 28 and the subcooler 29 and the regenerator 1. A part of the fourth pipe 30 and the fifth pipe 31 constitute the second pipe 4. The lower part of the regenerator 1 and the absorber 5 are connected via a sixth pipe 32, and a heat exchanger 33 is provided between the sixth pipe 32 and the fifth pipe 31. The absorption liquid to be returned is heated by the absorption liquid flowing from the regenerator 1 to the absorber 5.

  Below the tray 22, intermediate trays 34 are provided in multiple stages at a predetermined interval. Each of the intermediate trays 34 is configured in the same manner as the tray 22, and an absorption liquid spray hole 35 is provided on the bottom surface of the intermediate tray 34, as shown in a partially omitted sectional view of the intermediate tray in FIG. 5. The absorbing liquid spray holes 35 are arranged in the same manner as the tray 22 and are distributed and distributed so as to be distributed in a dense state in the refrigerant vapor flow direction and in a sparse state in the horizontal direction perpendicular to the flow direction. The difference from the tray 22 is that it is formed as thin as the filling material 25 is not filled, and the following inclined surface F is formed.

As shown in the enlarged cross-sectional view of the main part of FIG. 6, the refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray 34 is configured as an inclined surface F that becomes higher toward the upstream side in the refrigerant vapor flow direction.
The inclined surface F has an inner side having a radius of a distance R between the outer peripheral edge of the bottom downward surface of the vertically upward intermediate tray 34 and the liquid level of the set liquid depth of the absorbing liquid in the steady state of the intermediate tray 34. It is configured to touch the circle.

  With the above configuration, the liquid droplets sprayed from the absorbing liquid spraying means 21 are received by the intermediate tray 34 and further dropped as liquid droplets from the absorbing liquid spraying hole 35 of the intermediate tray 34, and sprayed from the intermediate tray 34. The received droplets are received by the lower intermediate tray 34 and dropped on the lower intermediate tray 34 as droplets. Further, the refrigerant vapor can be smoothly introduced without being obstructed by the outer peripheral wall of the intermediate tray 34, and the interval in the vertical direction of the intermediate tray 34 can be reduced.

  As a result, by dividing the effective height for absorption into multiple stages and smoothly introducing the refrigerant vapor, the height required for gravitational acceleration is reduced, and the time required for dripping to the lowest end as a whole is increased. In addition, the contact time with the refrigerant vapor can be increased. In addition, after mixing droplets whose concentration of absorbing liquid on the surface has decreased due to absorption of refrigerant vapor, they can be dropped again as droplets to increase the concentration of absorbing liquid on the surface of the droplets. Can improve the absorption performance.

  In the regenerator 1, a plate 37 having a heat transfer surface in the vertical direction as a heat transfer member having an outer surface formed as a heat transfer surface is arranged in the regenerator main body 36 in the horizontal direction, and engine cooling is performed below the plate 37. A heating medium supply pipe 38 for supplying the subsequent engine cooling water into the plate 37 is connected. On the other hand, an engine cooling water cooled by heat exchange with the absorbing liquid is taken out from the plate 37 to the upper part of the plate 37. The tube 39 is connected.

As shown in the partially omitted cross-sectional view of the evaporator intermediate tray in FIG. 7, a large number of refrigerant liquid spraying holes 40 are distributed on the bottom surface of the evaporator intermediate tray 14.
8, the refrigerant vapor outflow side of the outer peripheral wall of the evaporator intermediate tray 14 is configured as an inclined surface F1 that becomes higher toward the downstream side in the flow direction of the refrigerant vapor. .
The inclined surface F of the evaporator intermediate tray 14 has the inner side of the outer peripheral edge of the bottom downward surface of the evaporator intermediate tray 14 vertically above and the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray 14. It is configured to be in contact with a circle whose radius is the distance R1 from the liquid surface.

  With the above-described configuration, the refrigerant liquid droplets sprayed from the spray nozzle 12 are received by the evaporator intermediate tray 14, and further dropped as droplets from the refrigerant liquid spraying hole 40 of the evaporator intermediate tray 14, and also evaporated. The liquid droplets dispersed from the intermediate container tray 14 are received by the evaporator intermediate tray 14 below and dropped on the evaporator intermediate tray 14 below. Further, the refrigerant vapor can flow out smoothly without being obstructed by the outer peripheral wall of the evaporator intermediate tray 14, and the interval in the vertical direction of the evaporator intermediate tray 14 can be reduced.

  As a result, by dividing the effective height for evaporation in multiple stages and smoothly flowing out the refrigerant vapor, the height required for gravitational acceleration is reduced and the time required for dripping to the lowest end as a whole is increased. In addition, the evaporation performance can be improved.

  FIG. 9 is a plan view of an intermediate tray showing a second embodiment of an absorption refrigerator according to the present invention and a cross-sectional view of FIG. 10. In the intermediate tray 34, the absorption liquid is set in a steady state of the intermediate tray 34. A vertical and horizontal partition 41 equal to or lower than the liquid depth is provided. Other configurations are the same as those of the first embodiment.

  According to the second embodiment, even when the intermediate tray 34 is inclined due to vibration or the like, the horizontal flow of the absorbing liquid due to the inclination of the bottom surface is prevented by the partition 41, and the absorbing liquid is on one side of the intermediate tray 34. It is possible to avoid a situation in which the absorbent liquid is concentrated on the outer peripheral edge side of the other side and the absorbing liquid is not dropped from the absorbing liquid spraying hole on the outer peripheral edge side of the other side. Therefore, it is possible to satisfactorily drop the absorption liquid droplets, and to further improve the absorption performance of the refrigerant into the absorption liquid.

In the present invention, as in the second embodiment, vertical and horizontal partitions that are equal to or lower than the set liquid depth of the refrigerant liquid in the steady state of the intermediate tray for evaporator 14 are provided in the intermediate tray for evaporator 14. You may comprise as follows.
With this configuration, even if the evaporator intermediate tray 14 is tilted due to vibration or the like, the flow of the refrigerant liquid is prevented by the partition, and the refrigerant liquid is placed on the outer peripheral side of one side of the evaporator intermediate tray 14. It is possible to avoid the occurrence of a situation in which the refrigerant liquid is not dripped on the outer peripheral edge on the other side of the evaporator intermediate tray 14 regardless of the inclination of the evaporator intermediate tray 14, regardless of the inclination of the evaporator intermediate tray 14. The liquid droplets of the refrigerant liquid can be satisfactorily dropped, and the evaporating performance can be further improved to further improve the refrigerating capacity.

In the above embodiment, the absorbing liquid spraying means 21 includes the tray 22 and the absorbing liquid spraying hole 23, and further includes the filler 25 in the tray 22, but the present invention includes the filler 25. It does n’t matter.
Further, the absorbing liquid spraying means 21 may be configured by arranging pipes in which absorbing liquid spraying holes are formed in a dense state at a sparse interval in a horizontal direction perpendicular to the flow direction of the refrigerant vapor. The same applies to the refrigerant liquid spraying means.

Further, in the above-described embodiment, the inclined surface F of the intermediate tray 34 has an inner side of the outer peripheral edge of the bottom downward surface of the intermediate tray 34 vertically above and the set liquid depth of the absorbing liquid in the steady state of the intermediate tray 34. In this invention, the refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray 34 is configured as an inclined surface that becomes higher toward the upstream side. Anything is fine.
Similarly, the inclined surface F1 of the evaporator intermediate tray 14 is set so that the inner side is the outer peripheral edge of the bottom downward surface of the evaporator intermediate tray 14 vertically above and the refrigerant liquid set liquid in the steady state of the evaporator intermediate tray 14. Although it is configured so as to be in contact with a circle whose radius is the distance R1 from the deep liquid surface, in the present invention, the refrigerant vapor outflow side of the outer peripheral wall of the evaporator intermediate tray 14 is inclined so that the downstream side becomes higher. Any material may be used as long as it is configured on the surface.

It is a whole schematic block diagram which shows Example 1 of the absorption refrigerator which concerns on this invention. It is a partially broken exploded perspective view. It is a top view of a tray. FIG. 4 is an enlarged cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a partially omitted cross-sectional view of an intermediate tray. It is an expanded sectional view of the principal part of FIG. It is a partially omitted sectional view of the intermediate tray for the evaporator. It is an expanded sectional view of the principal part of FIG. It is a top view of the intermediate | middle tray for evaporators of Example 2 of the absorption refrigerator based on this invention. It is sectional drawing with which operation | movement description is provided.

Explanation of symbols

5 ... Absorber 7 ... Evaporator 8 ... Eliminator (introduction path)
12 ... Spraying nozzle (refrigerant spraying means)
13. Reservoir liquid reservoir (refrigerant spraying means)
DESCRIPTION OF SYMBOLS 14 ... Intermediate tray for evaporator 20 ... Absorber main body 21 ... Absorbing liquid spraying means 22 ... Tray 23 ... Sprinkling hole 29 ... Supercooler 34 ... Intermediate tray 35 ... Absorbing liquid spraying hole 40 ... Refrigerant liquid spraying hole 41 ... Partition F ... Inclined surface R of intermediate tray R: Distance between the outer peripheral edge of the bottom downward surface of the intermediate tray vertically above and the liquid level of the set depth of the absorbing liquid in the steady state of the intermediate tray F1: Inclined surface R1 of the intermediate tray for evaporator R1 The distance between the outer peripheral edge of the bottom downward surface of the intermediate tray for the evaporator above vertically and the liquid level of the set liquid depth of the refrigerant liquid in the steady state of the intermediate tray for evaporator

Claims (6)

An absorber body provided with an introduction path for introducing refrigerant vapor connected to the evaporator on a lateral side surface, an absorbing liquid spraying means provided on an upper part of the absorber body for spraying an absorbing liquid as droplets, and the absorption A supercooler for supercooling the absorption liquid before being supplied to the liquid spraying means, and a plurality of stages arranged vertically below the absorbent spraying means and sprayed from the absorbent spraying means to absorb the refrigerant vapor An absorption tray having an intermediate tray for receiving the droplets of the absorption liquid, and having dispersed the absorption liquid spray holes for dispersing the received absorption liquid and spraying the liquid droplets on the intermediate tray,
An absorption refrigerating machine, wherein the refrigerant vapor introduction side of the outer peripheral wall of the intermediate tray is configured as an inclined surface that becomes higher toward the upstream side. The absorption refrigerator according to claim 1,
The inner side of the inclined surface of the intermediate tray touches a circle whose radius is the distance between the outer peripheral edge of the bottom downward surface of the intermediate tray vertically above and the liquid level of the set liquid depth of the absorbing liquid in the steady state of the intermediate tray. An absorption refrigerator configured as described above. In the absorption refrigerator according to claim 1 or 2,
Absorption refrigeration with vertical and horizontal partitions in the intermediate tray equal to or lower than the set liquid depth of the absorbing liquid in the steady state of the intermediate tray so as to suppress the horizontal flow of the absorbing liquid due to the inclination of the bottom surface Machine. In the absorption refrigerator according to any one of claims 1, 2, and 3,
The evaporator is for a refrigerant liquid spraying means for spraying the refrigerant liquid as droplets, and for an evaporator for receiving the refrigerant liquid sprayed from the refrigerant liquid spraying means provided in multiple stages vertically below the refrigerant liquid spraying means. An intermediate tray, and a refrigerant liquid spray hole for dispersing the received refrigerant liquid and spraying it as droplets on the intermediate tray for the evaporator, and an outer peripheral wall of the intermediate tray for the evaporator An absorption refrigerator in which the outflow side of the refrigerant vapor is configured as an inclined surface that becomes higher toward the downstream side. The absorption refrigerator according to claim 4,
The inner side of the inclined surface of the evaporator intermediate tray is the distance between the outer peripheral edge of the bottom downward surface of the vertically upper evaporator intermediate tray and the liquid level of the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray. Absorption refrigerator configured to contact a circle with a radius. In the absorption refrigerator according to claim 4 or 5,
In the evaporator intermediate tray, vertical and horizontal partitions that are equal to or lower than the set liquid depth of the refrigerant liquid in the steady state of the evaporator intermediate tray are provided so as to suppress the horizontal flow of the refrigerant liquid due to the inclination of the bottom surface. Absorption refrigerator.

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