JP4139068B2 - Absorption refrigeration system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an increase in the refrigerating capacity of an absorption refrigeration apparatus in which an absorbing liquid is concentrated from a low concentration to a medium concentration by heating a burner and further concentrated to a high concentration using the heat of condensation of solvent vapor.
[0002]
[Prior art]
The absorption refrigeration system used for air conditioning and the like includes a low concentration absorbent tank, a heating means, and a low concentration absorbent separation cylinder. The low concentration absorbent is heated to boil, and the boiled low concentration absorbent is removed. It has a high temperature regenerator that separates into solvent vapor and medium concentration absorbent. A low temperature regenerator is provided on the outer periphery of the separation cylinder. The low temperature regenerator causes the intermediate concentration absorbing liquid to flow down along the outer surface of the solvent vapor tank, and further evaporates the solvent using the heat of condensation of the solvent vapor to generate a high concentration absorbing liquid and a solvent vapor.
[0003]
At the top of the absorption refrigeration apparatus, a condenser for collecting and condensing the solvent vapor and storing the condensed solvent is installed. Below the condenser, on the outer periphery of the low-temperature regenerator, there is disposed an absorber provided with a cooling coil connected to a cooling tower for heat dissipation and an absorption liquid flow-down means for flowing a high-concentration absorption liquid through the cooling coil. ing. A part of the cooling coil is extended into the condenser and functions to discharge the condensation heat of the solvent vapor. On the outer periphery of the absorber, an evaporator including a cold water (cold / hot water in the case of an air conditioner) coil connected to an indoor unit and a solvent flow down means for flowing down the liquefied solvent to the cold water coil is installed.
[0004]
This absorption refrigeration system heats the low-concentration absorption liquid with a heating source such as a burner and separates it into a solvent (water) and a high-concentration absorption liquid (lithium bromide aqueous solution), and the pressure difference in the absorption refrigeration apparatus To the top. The solvent is dropped into the cold water coil and evaporated to produce cold water that is a cooling refrigerant. The evaporated solvent flows into the absorber due to the pressure difference, and is absorbed by the high-concentration absorbing liquid flowing down to the cooling coil. The absorbed heat generated at this time is dissipated to the atmosphere by the outdoor unit. The low-concentration absorption liquid that has become a low concentration by absorbing the solvent is circulated to the high-temperature regenerator by the absorption liquid pump.
[0005]
[Problems to be solved by the invention]
When an absorption refrigeration system is used in a domestic air conditioner, it is necessary to simultaneously increase the refrigeration capacity and reduce the size of the system. To this end, it is important to improve the separation performance of the high-temperature regenerator. is there.
The object of the present invention is to smoothly separate the water vapor and the medium concentration absorbing liquid in the separation cylinder of the high temperature regenerator, to prevent the medium concentration absorbing liquid from being mixed with the water vapor, and without increasing the size of the apparatus. The present invention also provides an absorption refrigeration apparatus capable of increasing the refrigeration capacity.
[0006]
[Means for Solving the Problems]
The present invention comprises a low-concentration absorbent tank, heating means, and a boiled low-concentration absorbent separation tube. The low-concentration absorbent is heated to the boil, and the boiled low-concentration absorbent is absorbed into the solvent vapor and medium concentration. A high-temperature regenerator that separates into a liquid, a solvent vapor tank that accumulates the solvent vapor generated in the separation cylinder, and a medium-concentration absorbing liquid that flows down along the outer surface of the solvent vapor tank, and uses the condensation heat of the solvent vapor. A low temperature regenerator that heats the medium concentration absorbing liquid to generate a high concentration absorbing liquid and solvent vapor, a condenser that condenses the solvent vapor generated in the low temperature regenerator and the separation cylinder and stores the condensed solvent; A chilled water coil connected to the indoor unit, and a solvent flow down means for flowing down the solvent of the condenser to the chilled water coil, and an evaporator for evaporating the solvent on the surface of the chilled water coil to cool the chilled water in the chilled water coil; For heat dissipation A cooling coil connected to the cooling tower, and an absorption liquid flow-down means for flowing down the high-concentration absorbing liquid to the cooling coil, an absorber for absorbing the solvent evaporated by the evaporator into the high-concentration absorbing liquid, and the solvent In an absorption refrigeration apparatus comprising an absorption liquid pump that circulates a low concentration absorption liquid that has been absorbed to a low concentration to the high temperature regenerator, the lower end of the separation cylinder is connected to the low concentration absorption liquid tank and And an outer cylinder provided with an outlet for solvent vapor at the upper end, and a bottomed inner cylinder provided concentrically within the outer cylinder and provided with an outlet for medium concentration absorbing liquid at the lower part And an anti-splash cylinder that has a cylindrical shape with an upper edge that expands in a bowl shape, and is attached to the upper end of the outer cylinder and inserted concentrically with the upper end of the inner cylinder from it, the upper edge of the splash barrel when exhibiting inverse bell-shaped and Moni, clearance between the inner cylinder and the splash cylinder has a width greater than the vertical direction straight cylindrical portion of the gap, the low concentration absorption solution low concentration absorption solution boiled in the tank, the outer A gap between the cylinder and the inner cylinder blows up, and a gap between the upper end of the inner cylinder and the upper edge of the splash prevention cylinder blows down the gap between the inner cylinder and the splash prevention cylinder.
[0007]
【The invention's effect】
In this invention, the separation cylinder is connected to the high-temperature regenerator so that the lower end is vertically erected, and the upper end is provided with an outlet for solvent vapor. The bottomed inner cylinder is provided with an outlet for the intermediate concentration absorbing liquid, and the cylinder has an upper edge that expands like a bowl, and the upper edge is attached to the upper end of the outer cylinder and the inner cylinder And an anti-splash cylinder arranged concentrically at the upper end of the tube.
[0008]
For this reason, when the low-concentration absorbent boiled in the high-temperature regenerator blows up through the gap between the outer cylinder and the inner cylinder, it goes down the gap between the inner cylinder and the splash-proof cylinder around the upper end of the inner cylinder. . As a result, the liquid accompanying the initial stage of rising is ejected downward. The downward kinetic energy can reliably prevent liquid droplets from being entrained in the vapor, providing high separation performance, improving the refrigeration capacity without increasing the size of the absorption refrigeration system, and improving the cooling capacity. Start-up performance is improved.
[0009]
In addition, the upper edge of the splash-proof cylinder has an inverted bell mouth shape, so that the boiled liquid that has blown up can be smoothly guided downward and reversed in the direction of blow-down, effectively preventing splashes from entering the steam. it can.
Furthermore, since the gap between the inner cylinder and the splash prevention cylinder has a vertical cylinder portion in the vertical direction that is larger than the width of the gap, rectification of the absorbing liquid that blows down is performed, and the generation of splash can be reduced.
In the configuration according to claim 2 , the upper end of the outer cylinder is closed with a bell-shaped ceiling, and a steam port is formed at the center of the bell-shaped ceiling. Can be increased, and the effect of preventing splashes from entering the steam is increased.
In the configuration according to claim 3 , the passage area on the inner peripheral side of the splash prevention cylinder is four times or more than the area of the steam opening, and the flow velocity of the solvent vapor rising from the lower end of the splash prevention cylinder can be reduced. The effect of preventing the contamination of steam into the steam increases.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an absorption refrigeration apparatus according to the present invention, which is a cylindrical and airtight main body casing 10, a high-temperature regenerator 1 disposed below the main body casing 10, and a side of the high-temperature regenerator 1. The absorption liquid pump P is provided. The main casing 10 is connected to the cooling tower 11 by the coolant flow path 12, and is further connected to the indoor unit 13 by the cold water flow path 14. The main body casing 10 includes a cylindrical outer body 1A, a top plate 1B having a gentle spherical shape, and a bottom plate 1C. The bottom plate 1C includes a central portion 1E, a cylindrical portion 1F, and a lower outer peripheral portion 1G in which a circular bottom hole 1D is formed.
[0011]
In the main casing 10, the separation cylinder 2, the low temperature regenerator 3, the absorber 7, the condenser 8 and the evaporator 9 of the high temperature regenerator 1 are incorporated. In the high temperature regenerator 1, the main body casing 10, and the absorption liquid pump P, an aqueous lithium bromide solution as an absorption liquid circulates. The low temperature regenerator 3 includes a vertical double cylindrical solvent vapor tank 4, a medium concentration absorbing liquid separator 5, and an annular liquid receiver 6.
[0012]
The high temperature regenerator 1 includes a burner 15, a low concentration absorbent tank 16 heated by the burner 15, and a separation cylinder 2. A circular boiling port 17 is opened at the ceiling of the low concentration absorbent tank 16, and the boiling port 17 separates the boiled low concentration absorbent into solvent (water) vapor and medium concentration absorbent. It is connected to the lower end. The separation cylinder 2 is concentrically inserted from the circular bottom hole 1D into the center of the main casing 10 and installed vertically.
[0013]
As shown in FIG. 2, the separation cylinder 2 is separated from the outer cylinder 21 and the inner cylinder 22 which are both cylindrical and concentrically arranged to prevent the mixture of water droplets from being mixed with water vapor. A splash prevention cylinder 23 is provided. The splash prevention cylinder 23 has an upper edge 24 of an inverted bell mouth shape (saddle shape) at the upper end, the upper edge 24 is airtightly fixed to the upper end of the outer cylinder 21, and concentric with the upper end portion in the inner cylinder 22. Is drooping.
[0014]
The outer cylinder 21 has a lower end connected to the boiling port 17, and a bell-shaped ceiling 25 is airtightly joined to the upper end concentrically on the splash prevention cylinder 23. In the bell-shaped ceiling 25, a steam port 26 through which water vapor separated in the center passes is opened in a short cylindrical shape. The inner cylinder 22 is closed at its lower end located in the vicinity of the boiling port 17 by a spherical shell-shaped bottom 27, and is provided at its lower part with a medium-concentration absorbing liquid outlet 28 through which the medium-concentration absorbing liquid flows out.
[0015]
The upper end 20 of the inner cylinder 22 is a circular opening and is set at the same level as the lower end of the upper edge 24 of the inverted bell mouth shape. On the bell-shaped ceiling 25, a flat circular can-shaped water reservoir 29 is installed. The water vapor reservoir 29 penetrates through an opening provided at the center of the bottom plate 29a, and a vapor port 26 is inserted into the water vapor reservoir 29 so as to be airtightly joined.
[0016]
In the high temperature regenerator 1, the low-concentration absorbing liquid boils, and a mixture of water vapor and medium-concentration absorbing liquid blown up through the gap between the outer cylinder 21 and the inner cylinder 22 is formed at the upper edge 24 of the inverted bell mouth shape. It turns downward and enters the inner cylinder 22 from the upper end of the inner cylinder 22. In particular, at the start-up of the absorption refrigeration apparatus, the low-concentration absorbent in the low-concentration absorbent tank 16 suddenly boils and the gas-liquid mixture blows up through the gap A between the outer cylinder 21 and the inner cylinder 22. Then, it turns and blows down the gap B between the inner cylinder 22 and the splash prevention cylinder 23.
[0017]
At this time, the splash preventing cylinder 23 surely drops the splash generated from the gas-liquid mixture blowing down the gap B, and prevents the splash of the intermediate concentration absorbing liquid from being mixed into the water vapor passing through the steam port 26. . The gap A between the outer cylinder 21 and the inner cylinder 22 is set to have substantially the same cross-sectional area. In the gap B, the length L in the vertical direction of the straight pipe portion of the splash prevention cylinder 23 excluding the width W and the inverted bell mouth shape is L ≧ 2W.
[0018]
If the upper edge 24 of the splash-preventing cylinder 23 is an inverted bell mouth shape, the turning from the blowing up to the blowing down is smoothly performed, and if L ≧ 2W, the absorbing liquid that blows down can be reliably turned downward. Therefore, it is possible to reduce the degree of splashing of the absorbing liquid in the water vapor flowing upward from the splash prevention cylinder 23. If 4W ≧ L ≧ W, the boiling liquid can be rectified in the gap B to smoothly flow downward, and if L ≦ W, the rectification is insufficient, and steam is discharged from the lower end of the splash prevention cylinder 23. The splash flowing out to the mouth 26 increases. Further, when L ≧ 4W, there is a problem that the steam flow path is blocked when the liquid level in the inner cylinder 22 is high.
[0019]
The diameter D1 of the steam port 26 and the inner diameter D2 of the splash preventing cylinder 23 are set to D2 ≧ 2D1, and the passage area on the inner peripheral side of the splash preventing cylinder 23 is set to be four times or more than the area of the steam port 26. The flow rate of water vapor flowing upward at the position of the lower end of the splash prevention cylinder 23 is reduced. As a result, it is possible to reduce the degree to which the droplets of the absorbing liquid are caught in the water vapor flowing upward. In addition, the use of the bell-shaped ceiling 25 can increase the level difference (up and down distance) between the lower end of the splash prevention cylinder 23 and the steam port 26, and the degree of splashing of the intermediate concentration absorbing liquid into the water vapor is reduced. The medium-concentration absorbent that is concentrated by evaporation of water (solvent) and flows out from the medium-concentration absorbent outlet 28.
[0020]
A low temperature regenerator 3 is provided outside the separation cylinder 2. The low-temperature regenerator 3 includes a cylindrical casing 30 that is concentrically disposed between the separation cylinder 2 and the outer body 1 </ b> A of the main body casing 10. The cylindrical casing 30 includes an outer cylinder wall 3a and an inner cylinder wall 3b. In the cylindrical casing 30, a vertical double cylindrical solvent vapor tank 4 is disposed concentrically between the outer cylinder wall 3 a and the inner cylinder wall 3 b with a gap therebetween. Above the solvent vapor tank 4, as shown in FIG. 3, a separator 5 for medium concentration absorbing liquid is installed.
[0021]
The lower end of the annular gap between the cylindrical casing 30 and the solvent vapor tank 4 is hermetically closed at the central portion 1E of the bottom plate 1C, and a high concentration absorbent outlet 31 is provided at the central portion 1E. In this embodiment, the intermediate concentration absorbent separator 5 has an annular shape and is concentrically fixed to the upper end of the outer cylindrical wall 3a. A canopy 32 is installed in the vicinity of the top plate 1B above the separator 5 for medium concentration absorbing liquid, and a steam vent 33 is opened at the side of the canopy 32. The steam vent 33 serves as a water vapor passage to the condenser 8.
[0022]
The solvent vapor tank 4 is formed of two concentric cylinders and includes an outer wall 41 and an inner wall 42 that act as heat exchange surfaces. An annular gap between the outer wall 41 and the inner wall 42 is hermetically closed at the upper and lower ends by an annular lid plate 43 and a bottom wall 44 to form a high-temperature steam chamber. In addition, it is also possible to omit the cover plate 43 by curving the upper end portions of the outer wall 41 and the inner wall 42 in the proximity direction and butting them together. The upper part of the inner wall 42 and the bottom of the water vapor reservoir 29 are connected by a plurality of steam elbow pipes 45, and a water or steam outlet pipe 46 is connected to the bottom wall 44.
[0023]
Above the solvent vapor tank 4, a separator 5 for medium concentration absorbing liquid is installed. As shown in FIG. 4, the separator 5 is formed by joining an annular container body 51 having a substantially U-shaped cross section and an annular plate-shaped lid 52 that closes the upper opening of the container body 51. In the container body 51, the lower end of the outer peripheral wall 53 is airtightly joined to the upper end of the outer cylindrical wall 3a, and the inside of the inner peripheral wall is a steam passage 5A.
[0024]
Vapor holes 55 having an upper cylindrical portion by upward burring and liquid holes 56 having a lower cylindrical portion by downward burring are alternately formed in the vessel bottom 54 at equal intervals. The lid 52 is provided with a medium-concentration absorbing liquid supply port 57 through which the medium-concentration absorbing liquid is supplied, and an end of the medium-concentration absorbing liquid pipe 58 is inserted. The intermediate concentration absorbing liquid supplied from the intermediate concentration absorbing liquid tube 58 into the separator 5 boils in the separator 5 because the inside of the cylindrical casing 30 has a low pressure.
[0025]
In this embodiment, five liquid holes 56 are formed at intervals of 30 degrees between 120 degrees, and four vapor holes 55 are formed in the middle of the liquid holes 56. The medium-concentrated absorbent supply port 57 is provided on the opposite side of the section where the liquid hole 56 is formed. The tip of the medium-concentrated absorbent liquid pipe 58 is vertically close to the vessel bottom 54, and a horizontal hole 59 is formed on both sides. ing. Thereby, the fluctuation | variation at the time of inject | pouring a medium concentration absorption liquid to the separator 5 can be reduced, and rapid boiling can be prevented. Further, the boiling is completed in the flow path from the outlet of the medium concentration absorbing liquid tube 58 to the liquid hole 56, and the fluctuation of the medium concentration absorbing liquid in the vicinity of the liquid hole 56 can be attenuated.
[0026]
The outer wall 41 and the inner wall 42 have an inclined surface inclined in the proximity direction at the upper end, and an annular bowl-shaped annular liquid receptacle 6 for storing a medium concentration absorbing liquid is placed on the cover plate 43. It is installed in a coronal shape. As shown in FIG. 5, the annular liquid receiver 6 is provided with a small hole 62 around the inner and outer surfaces of the bottom 61 inclined substantially V-shaped, and a V-shaped cut at the inner and outer upper edges. A notch 63 is provided around.
[0027]
The medium-concentration absorbing liquid that has flowed down from the medium-concentrated absorbing liquid separator 5 to the annular liquid receiver 6 flows uniformly onto the inner and outer peripheral surfaces of the upper end portion of the solvent vapor tank 4 inclined from the small holes 62. When the amount of medium concentration absorbent flowing down from the separator 5 is large, the medium concentration absorbent uniformly flows from the notch 63 to the inner and outer peripheral surfaces of the upper end portion of the solvent vapor tank 4 inclined. As a result, the intermediate concentration absorbing liquid flows down in a thin film shape covering the entire outer surfaces of the outer wall 41 and the inner wall 42, and efficiently exchanges heat with the water vapor in the solvent vapor tank 4.
[0028]
The medium concentration absorbing liquid is heated by the heat of condensation of water vapor, re-boils, and separated into water vapor and a high concentration absorbing liquid. The water vapor moves from the vapor outlet 33 to the condenser 8, and the high concentration absorbing liquid has a high concentration. It flows out from the absorption liquid outlet 31. In this configuration, since the outer wall 41 and the inner wall 42 of the solvent vapor tank 4 act as a heat exchange surface, the medium concentration absorbing liquid is efficiently evaporated. As a result, since the heat transfer area is approximately doubled, it is possible to reduce the size of the low-temperature regenerator having the same capacity by about 50% at the maximum.
[0029]
The water vapor generated by boiling passes through the steam hole 55 having the upper cylindrical portion into the cylindrical casing 30 and moves from the steam passage 5A to the condenser 8 through the steam vent 33. At this time, the vapor hole 55 having the upper cylinder portion has an action of effectively preventing the splash of the medium concentration absorbing liquid from splashing out of the separator 5. The medium concentration absorbing liquid that has stabilized after boiling flows down from the five liquid holes 56 to the annular liquid receiver 6. At this time, the liquid hole 56 having the lower cylinder portion has an effect of preventing the medium concentration absorbing liquid from being shaken and scattered.
[0030]
An absorber 7 is provided outside the low-temperature regenerator 3, and a condenser 8 is installed above the absorber 7. An evaporator 9 is installed outside the absorber 7 and below the condenser 8. The absorber 7 includes a cooling coil 71 connected to the cooling tower 11, and an absorbing liquid spreader 72 that is disposed above the cooling coil 71 and sprays a high concentration absorbing liquid to the cooling coil 71.
[0031]
A condenser coil 81 connected to the cooling coil 71 is disposed in the condenser 8. The condenser 8 condenses the water vapor flowing in from the separation cylinder 2 and the low temperature regenerator 3 by the condensing coil 81 and is supplied with already condensed water, and is supplied to a water receiving container 82 installed at the lower part of the condenser 8. Accumulate.
[0032]
The evaporator 9 includes a cold water coil 91 connected to the indoor unit 13, and a water sprayer 92 that is disposed above the cold water coil 91 and sprays water onto the cold water coil 91. Water is supplied to the water spreader 92 from a water receiving container 82 installed above. The low-concentration absorption liquid that has become a low concentration by absorbing water vapor as a solvent is circulated to the low-concentration absorption liquid tank 16 of the high-temperature regenerator 1 by the absorption liquid pump P.
[0033]
Next, the operation will be described. The low-concentration absorbing liquid heated by the burner 15 in the high-temperature regenerator 1 blows up into the separation cylinder 2 from the boiling port 17 and is separated into water evaporation as a solvent and medium-concentration absorbing liquid. The water vapor is separated from the splash of the absorbing liquid in the splash prevention cylinder 23 and flows in the order of the water vapor reservoir 29 → the steam elbow pipe 45 → the solvent vapor tank 4.
[0034]
The intermediate concentration absorption liquid flows out from the intermediate concentration absorption liquid outlet 28 provided at the lower part of the inner cylinder 22 and flows into the intermediate concentration absorption liquid separator 58 from the intermediate concentration absorption liquid pipe 58. The vapor is separated by boiling in the separator 5 for the intermediate concentration absorbing liquid, and the stable intermediate concentration absorbing liquid flows down from the separator 5 for the intermediate concentration absorbing liquid to the annular liquid receiver 6, and the solvent vapor is passed through the small hole 62. A film is supplied to the outer surface of the tank 4.
[0035]
Both the outer wall 41 and the inner wall 42 of the solvent vapor tank 4 act as heat exchange surfaces, and the intermediate concentration absorbing liquid flowing down in the form of a thin film is heated by the heat of condensation of water vapor, and the water evaporates and concentrates into a high concentration absorbing liquid. Is done. The high-concentration absorption liquid flows out from the high-concentration absorption liquid outlet 31, is supplied to the absorption liquid sprayer 72 of the absorber 7, and is sprayed on the cooling coil 71. The water vapor and water are once supplied to the condenser 8, and the water vapor becomes liquefied water, is supplied to the water sprayer 92 together with the already liquefied water, and is sprayed to the cold water coil 91.
[Brief description of the drawings]
FIG. 1 is a cross-sectional skeleton view of an absorption refrigeration apparatus.
FIG. 2 is a cross-sectional view of a low temperature regenerator.
FIG. 3 is an enlarged cross-sectional view of a main part of a low-temperature regenerator.
FIGS. 4A and 4B are a front sectional view and a plan sectional view of a separator for medium concentration absorbing liquid. FIGS.
FIG. 5 is a plan view and a front sectional view of an annular liquid receiver.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 High temperature regenerator 2 Separation cylinder 3 Low temperature regenerator 4 Solvent vapor tank 5 Medium concentration absorption liquid separator 6 Annular liquid receiver 7 Absorber 8 Condenser 9 Evaporator 11 Cooling tower 13 Indoor unit 15 Burner (heating means)
16 Low-concentration absorbing liquid tank 21 Outer cylinder 22 Inner cylinder 23 Splash prevention cylinder 24 Upper edge 25 Bell-shaped ceiling 26 Steam port 71 Cooling coil 72 Absorbing liquid sprayer (absorbing liquid flowing-down means)
91 Cold water coil 92 Water sprayer (solvent flow down means)
P Absorption liquid pump

Claims (3)

Equipped with a low-concentration absorption liquid tank, heating means, and a boiled low-concentration absorption liquid separation cylinder, the low-concentration absorption liquid is heated to boil, and the boiled low-concentration absorption liquid is separated into solvent vapor and medium-concentration absorption liquid A high temperature regenerator to
A solvent vapor tank that stores the solvent vapor generated in the separation cylinder, and a medium concentration absorption liquid flowing down along the outer surface of the solvent vapor tank, and the medium concentration absorption liquid is heated using the condensation heat of the solvent vapor to obtain a high concentration A low-temperature regenerator that generates an absorbent and solvent vapor;
A condenser for condensing the solvent vapor generated in the low-temperature regenerator and the separation cylinder and storing the condensed solvent;
A chilled water coil connected to the indoor unit, and a solvent flow down means for flowing down the solvent of the condenser to the chilled water coil, an evaporator for evaporating the solvent on the surface of the chilled water coil and cooling the chilled water in the chilled water coil;
A cooling coil connected to a cooling tower for heat dissipation, and an absorption liquid flow-down means for flowing down the high-concentration absorption liquid to the cooling coil, and an absorber for absorbing the solvent evaporated in the evaporator into the high-concentration absorption liquid
In an absorption refrigeration apparatus comprising an absorption liquid pump that circulates a low-concentration absorption liquid having a low concentration by absorbing the solvent to the high-temperature regenerator
The separation cylinder has a lower end vertically connected to the low-concentration absorbing liquid tank, and an upper cylinder provided with an outlet for solvent vapor at the upper end. Presents a bottomed inner cylinder provided with an outlet for a medium-concentration absorbing solution and a cylindrical shape having an upper edge that expands like a bowl, and the upper edge is attached to the upper end of the outer cylinder and It consists of a splash-proof cylinder that is concentrically inserted into the upper end of the inner cylinder,
The upper edge of the splash-proof cylinder has an inverted bell mouth shape,
The gap between the inner cylinder and the splash prevention cylinder has a vertical cylinder portion in the vertical direction larger than the width of the gap,
The low concentration absorbent boiled in the low concentration absorbent tank blows up through the gap between the outer cylinder and the inner cylinder, and passes through the gap between the upper end of the inner cylinder and the upper edge of the splash prevention cylinder. Absorption refrigeration apparatus characterized in that the gap between the splatter and the splash prevention cylinder blows downward. The absorption refrigeration apparatus according to claim 1, wherein an upper end of the outer cylinder is closed with a bell-shaped ceiling, and a steam port is formed at the center of the bell-shaped ceiling. Refrigeration equipment. 3. The absorption refrigeration apparatus according to claim 2, wherein a passage area on the inner peripheral side of the splash prevention cylinder is four times or more than an area of the steam port .

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