JP2642553B2 - Absorption chiller / heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption chiller / heater using water as a refrigerant and a salt solution such as lithium bromide as an absorbent, and more particularly to a horizontal water heater such as an evaporator, an absorber and a low-temperature regenerator. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption chiller / heater having an improved refrigerant and solution spraying device which is optimal for a liquid film falling type heat exchanger in which a refrigerant liquid or a solution is sprayed on a heat transfer tube group to perform heat exchange.

[0002]

2. Description of the Related Art Liquid spraying devices such as an evaporator and an absorber of an absorption chiller / heater include the following spray type, siphon type, over flow type, liquid guide plate type, apron type, and the like. A nozzle guide system, a through-hole system, and the like have been used. (1) Spray method: As described in Japanese Utility Model Laid-Open No. 51-126415, a spray nozzle was used for an evaporator and an absorber. The refrigerant liquid in the evaporator is sprayed by a refrigerant pump by a spray tree provided with a spray nozzle. Also, in the absorber, the solution was sprayed by a solution pump by a spray pump provided with a spray nozzle. For this kind of thing,
No. -10472.

(2) Siphon method: 53-52
As described in Japanese Patent Application Publication No. 682, a siphon is sandwiched between spray gutter side walls, and the siphon sprays the absorbing liquid or the refrigerant sucked from the suction hole one by one. The liquid guided from the liquid inlet pipe to the distribution gutter via the distribution orifice flows over the edge of the distribution gutter by the siphon, flows down along the inside of the distribution cover plate, and drops onto the heat transfer tube group. Examples of this type include JP-A-63-176967 and JP-A-46-176967.
No. 17399, No. 46-17400, No. 46
JP-A-7956 and JP-B-43-18501.

[0004] (3) Overflow method ...
As described in Japanese Patent No. 4368, a concentrated solution overflowing from a slit provided on the upper surface of a distributor flows along a wire. A small hole is provided in the lower part of the distributor so that liquid does not accumulate. The uniformity of liquid distribution to the heat transfer tube group requires more rigorous horizontal installation of the distributor than the siphon method. In addition, as what is performed from the side of the spray gutter instead of from the upper surface, Japanese Utility Model Publication No. 1-170313,
JP-A-63-176967 can be mentioned.

(4) Liquid guide plate method: Japanese Patent Publication No. 42-258
As described in Japanese Patent Publication No. 71, the liquid flowing out of a small hole in the side or bottom surface of the spraying gutter is guided to a lower guide plate via a guide groove, and is sprayed to the heat transfer tube group. Some of the lower guide plates are further provided with holes. Examples of this type are disclosed in Japanese Utility Model Publication No. 46-17399 and Japanese Patent Application Laid-Open No. Sho 60-29.
No. 564.

(5) Apron system: Japanese Patent Publication No. 53-305
As described in Japanese Patent Publication No. 35, the liquid is ejected from the upper small hole of the liquid distribution pipe, dispersed in the distribution groove, and furthermore, the liquid is caused to flow down on the guide plate (apron) and dispersed to the heat transfer tube group. It is a method. This type is disclosed in Japanese Patent Application Laid-Open No. 51-51.
040 and JP-A-52-9154. Japanese Patent Application Laid-Open No. 61-16907 discloses a system in combination with a spray nozzle.

[0007] (6) Nozzle guide method ...
As described in Japanese Patent No. 974, a rod-shaped guide is inserted into a spray hole opened at a lower portion of a liquid distribution pipe, and the liquid is dropped on the heat transfer tube along the guide. Examples of this kind include JP-B-43-28499. (7) Through-hole method: As described in Japanese Patent Publication No. 42-25871, a hole is formed at a position corresponding to the heat transfer tube below the liquid distribution tray and sprayed. These seven types of liquid spraying devices have been used in absorption chillers / heaters.

Next, a conventional general absorption chiller / heater will be described with reference to FIG. FIG. 8 is a cycle diagram of a general absorption chiller / heater. As shown in FIG. 8, the absorption chiller / heater has a high-temperature regenerator 1, a low-temperature regenerator 2, a condenser 3, a evaporator 4, and a high-temperature regenerator 1, which are heated by an external heat source such as combustion heat of kerosene or city gas fuel. The absorber 5, the high-temperature solution heat exchanger 6, the low-temperature solution heat exchanger 7, the solution pump 8, and the refrigerant pump 9 are operatively connected by piping, and the cooling water CW cooled by the cooling tower CT (not shown) is cooled. Water is passed through the absorber 5 and the condenser 3 by a water pump (not shown), cold water 4a is passed through the evaporator 4 by a cold / hot water pump (not shown), and cold / hot water piping is connected to an indoor air handling unit. The cooling is performed by circulating through the air.

The solution heated in the high-temperature regenerator 1 generates refrigerant vapor and is concentrated. The solution in the low-temperature regenerator 2 is heated by the refrigerant vapor generated in the high-temperature regenerator 1, generates refrigerant vapor, and is concentrated. The condenser 3 cools the refrigerant vapor of the low-temperature regenerator 2 and the refrigerant from the high-temperature regenerator 1 through the low-temperature regenerator 2 with cooling water CW, condenses and liquefies the liquid, and sends it to the evaporator 4 via the liquid refrigerant conduit 17. Can be The liquid refrigerant of the evaporator 4 is sprayed on the heat exchanger (heat transfer tube) by the refrigerant pump 9 via the spraying device 20, takes heat from the cold water 4a, evaporates, and passes through the eliminator 11 to absorb the liquid refrigerant. It is led to.

On the other hand, the concentrated solution generated by the high-temperature regenerator 1 is mixed with the concentrated solution generated by the low-temperature regenerator 2 through the high-temperature solution heat exchanger 6 and passes through the low-temperature solution heat exchanger 7 so that the pressure difference and the head The liquid is guided to the absorber 5 by the difference, and is sprayed onto the heat exchanger by the spraying device 20 via the liquid introducing pipe 19 by the solution spray pump 18. The concentrated solution sprayed on the heat exchanger of the absorber 5 is cooled by the cooling water CW and absorbs the refrigerant vapor from the evaporator 4 to generate a dilute solution. Each is sent to the regenerator 2. The refrigeration cycle is configured as described above.

During heating, the refrigerant pump 9 is stopped and the cooling / heating switching valve 12 is opened. Refrigerant vapor generated in the high-temperature regenerator 1 is divided into two parts via a branch pipe 16 branched from a header of the low-temperature regenerator 2 and a cooling / heating switching valve 12, one part of which is guided to a bubble pump 13, and the other part is a bypass pipe 14. Hot water 4b guided to the evaporator 4 via the
And heat exchange with it to condense and liquefy. This liquid refrigerant is sent to the absorber 5 by the bubble pump 13 via the heating liquid refrigerant conduit 15. As the working medium, water is used as a refrigerant, and an aqueous solution of lithium bromide is used as an absorbent.
Ethylhexyl alcohol and the like are added.

In a cycle without the refrigerant pump 9,
The liquid refrigerant generated in the condenser 3 is guided to the spraying device 20 of the evaporator 4 via the liquid refrigerant conduit 17 using the liquid head difference and the pressure difference, and is dropped on the heat exchanger. Similarly, in a cycle in which the solution spray pump 18 is not provided, the concentrated solution is sent to the spraying device 20 of the absorber 5 via the solution introduction pipe 19 due to the head difference and the pressure difference of the solution.

[0013]

The above-mentioned seven types of liquid spraying devices of the conventional absorption chiller / heater have the following problems. (1) The spray method places emphasis on a wide range of application and uniformity of application density, and when the application density is changed or a high application density is required, the application liquid waste increases and the problem is increased. there were. Further, since (2) siphon system, (3) overflow system, (4) liquid guide plate system, etc., use a spray gutter, and when a high spray density is required, the spray gutter becomes large. There was a problem.

Furthermore, (5) In the apron system or the system in which the spray nozzle and the liquid guide plate are combined, the emphasis is placed on the uniformity of the spray density, and when the spray liquid amount changes or a high spray density is required. In this case, there is a problem in that the spray liquid is wasted. Also, (6) the nozzle guide method is suitable for spraying a small amount of liquid. At a high spray density, it becomes impossible to prevent the target liquid from being scattered. there were.

Finally, (7) the through-hole method is the simplest configuration, but has a problem that the uniformity of the spray density deteriorates when the spray liquid amount changes, and is hardly used. As described above, the conventional liquid spraying device can sufficiently satisfy the important functions for improving the performance of the absorption chiller / heater, such as a change in the spraying liquid amount, a distribution of the spraying density and a demand for a high spraying density. There was a problem that it was not a configuration.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and has as its object to change the amount of a solution to be sprayed, to distribute the spray density, or to request a high spray density.
An object of the present invention is to provide an absorption chiller / heater equipped with a refrigerant and solution spraying device which can easily cope with important functions in order to improve the performance of the absorption chiller / heater and which has high reliability of the equipment.

[0017]

The technical means for achieving the above-mentioned object will be described by writing reference numerals () in key parts shown in the embodiments of FIGS. 1 and 2 described later for convenience of explanation. I do. In order to achieve the above object, the configuration of the first invention according to the absorption chiller / heater of the present invention is at least a regenerator,
Condenser, evaporator, absorber, solution heat exchanger, refrigerant pump,
A solution pump and a piping system for operatively connecting these devices are provided, so that the refrigerant is sprayed on the cold and hot water flow tubes in the evaporator and the solution is sprayed on the cooling water flow tubes in the absorber. And a distribution pipe (21) branched from the liquid introduction pipe (19) of the pipe system and disposed in parallel with the heat transfer pipe, and a plurality of holes formed in the distribution pipe (21). Liquid distribution orifice (22) and the distribution pipe (2)
A cover plate (23) fixed to the distribution pipe outside and holding the gap, and a droplet dispersion plate (25) fixed inside the cover plate (23) while holding the gap to the outside. 24).

Further, in order to achieve the above object, a second invention according to the absorption chiller / heater of the present invention comprises at least a regenerator, a condenser, an evaporator, an absorber, a solution heat exchanger,
A refrigerant pump, a solution pump, and a piping system for operatively connecting these devices are provided. The refrigerant is sprayed on the cold / hot water circulation heat transfer tubes in the evaporator, and the solution is dispersed on the cooling water circulation heat transfer tubes in the absorber. In an absorption chiller / heater configured to be sprayed, a distribution pipe (21) branched from the liquid introduction pipe of the pipe system and disposed in parallel with the heat transfer pipe, and a plurality of liquid distribution holes opened in the distribution pipe. An orifice (22) and a cover plate (23) fixed to the outside of the distribution pipe while maintaining a gap with the distribution pipe.
And a refrigerant and solution dispersing device including a liquid droplet dispersing plate (24) fixed inside the cover plate and the cover plate while maintaining a gap, wherein the liquid droplet dispersing plate (24) has a comb-like shape. And a liquid drop distance between the droplet dispersing plate (24) and the heat transfer tube is 3 mm to 9 mm.
Torr range.

Further, in order to achieve the above object, a third aspect of the invention relating to an absorption chiller / heater according to the present invention comprises a droplet dispersing plate (24) and a cover plate (2) in a refrigerant / solution spraying apparatus.
3) are provided with recesses (26, 25), respectively, and they are fitted and connected.

Further, in order to achieve the above object, according to a fourth aspect of the present invention, there is provided an absorption chiller / heater according to the present invention, wherein a plurality of recesses ( 25) is provided to maintain the distance of the gap from the distribution pipe (21), and a part of the recess is fitted and connected to a depression provided on the surface of the distribution pipe.

Further, in order to achieve the above object,
According to a fifth aspect of the invention relating to the absorption chiller / heater of the present invention, the cover plate and the droplet dispersion plate in the refrigerant / solution spraying device are made of engineering plastic.

Further, in order to achieve the above object,
The configuration of the sixth invention according to the absorption chiller / heater of the present invention includes a distribution pipe branched from a liquid introduction pipe and arranged in parallel with the heat transfer pipe, and a plurality of liquid distribution orifices opened in the distribution pipe. A refrigerant comprising: a cover plate fixed to the outside of the distribution pipe while maintaining a gap with the distribution pipe; and a droplet dispersion plate fixed to the inside of the cover plate with the clearance between the cover plate and the gap. A solution spraying device is provided, and a rod-shaped body is provided inside the cover plate,
The rod is inserted into a plurality of liquid distribution orifices opened in the distribution pipe to prevent the cover plate and the droplet dispersion plate fixed thereto from rotating around the distribution pipe.

[0023]

The function of each of the above technical means is as follows. Here, for convenience of description, reference numerals shown in the embodiments of FIGS. According to the first aspect, the liquid refrigerant or the solution pressurized by the refrigerant pump or the solution spray pump is introduced into the distribution pipe (21) branched from the liquid introduction pipe (19) and arranged in parallel with the heat transfer pipe. A plurality of liquid distribution orifices (22) are arranged in the distribution pipe (21), and are first uniformly distributed in the axial direction of the heat transfer pipe. The refrigerant liquid or solution spouted from the liquid distribution orifice (22) is supplied to the distribution pipe (2).
Outside of 1), it collides with the distribution pipe (21) and a cover plate (23) fixed with a gap in a U-shape to reduce the jetting speed of the liquid and spread the liquid in the longitudinal direction. Furthermore, the liquid is guided to a gap between the cover plate (23) and a droplet dispersion plate (24) disposed below the liquid distribution pipe (21),
The liquid flows down on the heat transfer tube along the droplet dispersion plate (24).

Here, the amount of liquid is reduced by controlling the number of revolutions of the refrigerant pump or the solution spray pump or by controlling the amount of liquid provided in the liquid introduction pipe. If the amount of liquid is small, the liquid distribution orifice (2
The ejection of the liquid from 2) is weakened, and the spread of the liquid when the liquid collides with the cover plate (23) is small. Therefore, the range of the liquid flowing down on the droplet dispersion plate (24) is narrowed. When the amount of the spray liquid is controlled as described above, the spread of the liquid spray on the heat transfer tube group is narrowed, so that the amount of heat exchange is controlled to be small.

According to the second aspect of the present invention, the droplets falling from the comb-like tip of the droplet dispersion plate (24) fall from 3 mm to 9 mm and reach the heat transfer tube. At a distance less than 3 millimeters, the liquid continuously flows down as in the conventional wire guide system, and since the droplet cannot be formed at the tip, the liquid flowing down the heat transfer tube becomes continuous. Poor spread of liquid. On the other hand, if the distance is larger than about 9 millimeters, the liquid dropped on the heat transfer tube tends to separate from the heat transfer tube due to the kinetic energy of the drop, and the liquid is remarkably separated particularly when the amount of the spray liquid is increased.

Further, according to the third and fourth aspects of the present invention, a plurality of recesses (25) are provided inside the cover plate (23) to maintain the distance of the gap with the distribution pipe (21), Since a part is fitted and connected to the recess provided in the distribution pipe,
Assembly of the spraying device becomes extremely easy. Furthermore,
According to the fifth aspect of the present invention, the cover plate and the droplet dispersion plate are made of engineering plastic, so that the weight can be reduced and the assembling can be facilitated. Similarly, there is an advantage that the spraying device can be disassembled for easy cleaning.

Further, the rod provided inside the cover plate is inserted into a plurality of liquid distribution orifices opened in the distribution pipe, and the cover plate and the droplet dispersion plate fixed thereto are connected to the distribution pipe. It prevents the surroundings from rotating.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 7 show a refrigerant,
Although it is a solution spraying apparatus, the configuration of an absorption chiller / heater to which these are applied is the same as that shown in FIG. [Embodiment 1] FIG. 1 is a schematic perspective view of a refrigerant and solution spraying device of an absorption chiller / heater according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of the liquid spraying device. 2, the same components as those in FIG. 1 are denoted by the same reference numerals.

As shown in FIGS. 1 and 2, the refrigerant / solution spraying device 20 of the absorption chiller / heater has a liquid introduction pipe 19 of a piping system of the absorption chiller / heater connected to a branch header 19a, and is arranged in parallel with the heat transfer pipe. Two distribution pipes 21 arranged and formed of square pipes are connected to the branch header 19a. Here, the heat transfer tubes correspond to the cold / hot water flow heat transfer tubes in the evaporator 4 or the cooling water flow heat transfer tubes in the absorber 5 shown in FIG. As shown in FIG. 2, a plurality of liquid distribution orifices 22 are provided on both sides of the distribution pipe 21. A U-shaped cover plate 23 is provided outside the distribution pipe 21, and is fixed to the distribution pipe 21 by a recess 25 while maintaining a gap.

Inside the cover plate 23, the distribution pipe 21
A U-shaped droplet dispersing plate 24 is arranged below the lower side of FIG. The lower portion of the droplet dispersion plate 24 has a comb shape.
Further, the cover plate 23 is provided with a recess 25 so as to appropriately secure a gap with the distribution pipe 21 and is fitted and fixed to a recess 26 provided in the droplet dispersion plate 24.

The cover plate 23 and the droplet dispersion plate 24 are preferably made of engineering plastic.
Thereby, the weight can be reduced and the generation of rust can be prevented. The liquid drop distance between the droplet dispersing plate 24 and the heat transfer tube is set in a range from 3 millimeters to 9 millimeters.

The liquid refrigerant or solution is first guided from the liquid introduction pipe 19 to the branch header 19a, where it is distributed and introduced to the distribution pipes 21. The liquid guided to the distribution pipe 21 is ejected from the liquid distribution orifice 22, collides with the inside of the cover plate 23, spreads, and is decelerated. The liquid that has flowed down the gap between the cover plate 23 and the distribution pipe 21 falls along the droplet dispersion plate 24 from the tip of the comb teeth onto the heat transfer tube. As described above, since the liquid flows down along the plate, fine mist is not generated, and the liquid can be properly dropped on the heat transfer tube.

Here, when the amount of the liquid further increases, the speed at which the liquid is ejected from the liquid distribution orifice 22 increases, and the cover plate 2
The liquid flow does not collide with the heat transfer tube because the liquid flow collides with the inside of the heat transfer pipe 3 and is decelerated, so that the generation of mist can be prevented. Conversely, when the liquid amount is controlled and decreased, an appropriate amount flows out from the liquid distribution orifice 22, and the flow rate of the ejected liquid is slow, so that the spread of the liquid is small. for that reason,
The liquid falls on the heat transfer tube in a small area, and therefore, the liquid does not flow down in part of the heat transfer tube.

It is desirable that three to five comb teeth correspond to one location of the distribution orifice 22. As a result, the amount of heat exchange is reduced and control can be performed. Also,
In this embodiment, since the cover plate 23 is connected to the branch header 19a, it is possible to prevent the liquid from being ejected from the end. Of course, an end plate 31 (see FIG. 1) is provided at the other end to prevent the liquid from being ejected from the end gap between the branch pipe 21 and the cover plate 23.

As described above, according to the present embodiment, the distribution pipe 21 branched from the liquid introduction pipe and disposed in parallel with the heat transfer pipe.
A plurality of liquid distribution orifices 22 opened in the distribution pipe 21; a cover plate 23 fixed to the outside of the distribution pipe 21 in a U-shape with a gap with the distribution pipe 21; Since the refrigerant and solution spraying device including the cover plate 23 and the U-shaped droplet dispersing plate 24 fixed with a gap inside the plate 23 is provided, the following effects are obtained. (A) A large amount of solution and a spraying liquid such as a refrigerant can be uniformly sprayed with a small pipe resistance.

The droplet dispersing plate 24 is formed in a comb-like shape, and the liquid drop distance between the droplet dispersing plate 24 and the heat transfer tube is set in a range from 3 mm to 9 mm. (B) When the rotation rate control or the flow rate control of the refrigerant pump 9 or the solution spray pump 18 is performed, the amount of the sprayed liquid is reduced, but the spread of the sprayed liquid is correspondingly reduced, and the heat transfer area to which the liquid is wetted is reduced. It is possible to control the amount of heat exchange and reduce the amount of heat exchange, thereby facilitating control under partial load.

Further, recesses 26 and 25 are provided on the droplet dispersion plate 24 and the cover plate 23, respectively, and they are fitted and connected. Alternatively, a plurality of recesses 25 are provided inside the cover plate 23 to separate them. Since the distance of the gap from the pipe 21 is maintained, (c) the dispersing device is extremely easy to disassemble and assemble, and it is particularly easy to remove foreign substances during assembling, thereby improving the reliability of the device. is there. Also, since the cover plate and the droplet dispersion plate are made of engineering plastic, (d) the weight can be reduced and the generation of rust can be prevented, so that the reliability of the device can be improved.

[Embodiment 2] FIG. 3 is a sectional view of a liquid spraying apparatus according to another embodiment of the present invention, and FIG. 4 is a partial side view of the apparatus of FIG. In the figure, components having the same reference numerals as those in FIG. 2 are the same as those in the previous embodiment, and the description thereof will be omitted. Figure 3,
The difference between the embodiment of FIG. 4 and the embodiment of FIGS.
That is, the distribution pipe 21A is a circular pipe. A recess 27 is provided below the distribution pipe 21A, and is fitted and connected to a recess 28 provided in the droplet dispersion plate 24A to prevent rotation of the cover plate 23 and the droplet dispersion plate 24A.

Further, the comb teeth portion of the droplet dispersion plate 24A is expanded outward to correspond to a wide heat transfer tube pitch. further,
The liquid distribution orifice 22A is provided diagonally above the distribution pipe 21A to prevent gas from remaining in the distribution pipe 21A. This can prevent non-uniform liquid distribution due to blockage of the liquid flow path due to gas stagnation in the distribution pipe 21A during long-time operation, and is expected to have the same effect as the previous embodiment.

[Embodiment 3] FIG. 5 is a sectional view of a liquid spraying apparatus according to still another embodiment of the present invention, and FIG. 6 is a partial side view of the apparatus of FIG. In the figure, components having the same reference numerals as those in FIG. 2 are the same as those in the previous embodiment, and the description thereof will be omitted.
The difference between the embodiment of FIGS. 5 and 6 and the embodiment of FIGS. 1 and 2 is that the distribution orifice 22B is connected to the upper part of the distribution pipe 21B.
That's what we did. Further, the cover plate 23B is different from the previous embodiment in that the upper part is formed in a semicircular shape. When the amount of liquid is small, the liquid distribution to the left and right tends to be slightly uneven. The rotation of the cover plate 23B and the droplet dispersion plate 24A is prevented by fitting the recess 25 provided on the cover plate 23B into the recess 29 provided on the side surface of the distribution pipe 21B. According to this embodiment, the same effects as those of the previous embodiment can be obtained.

[Embodiment 4] FIG. 7 is a sectional view of a liquid spraying apparatus according to still another embodiment of the present invention. In the figure, FIG.
Alternatively, the components having the same reference numerals as those in FIG. 5 are the same as those in the previous embodiments, and the description thereof will be omitted. In the embodiment of FIG.
The point that the rotation is stopped by the rod 30 is different from the other embodiments. The rod 30 is fixed to the cover plate 23B by welding and inserted into the distribution orifice 22B of the distribution pipe 21B. This makes assembly and disassembly very easy.

According to the embodiment shown in FIG. 7, the same effects as those of the previous embodiments can be expected. In addition, the rod 30 is provided inside the cover plate 23B, and the liquid distribution orifice 22B opened in the distribution pipe 21B. The rod 30 is inserted into the cover plate 23B.
Also, since the droplet dispersion plate 24A fixed thereto is prevented from rotating around the distribution pipe 21B, there is an effect peculiar to the present embodiment that the droplet can always be dropped on a fixed heat transfer tube. .

[0043]

As described above in detail, according to the present invention, it is necessary to improve the performance of an absorption chiller / heater such as a change in the amount of a solution to be sprayed, a distribution of a spray density or a demand for a high spray density. It is possible to provide an absorption chiller / heater equipped with a refrigerant and solution spraying device which can easily cope with important functions and has high reliability in equipment.

[Brief description of the drawings]

FIG. 1 shows a refrigerant of an absorption chiller / heater according to one embodiment of the present invention;
It is a schematic perspective view of a solution spraying apparatus.

FIG. 2 is a sectional view of a main part of the liquid spraying device of FIG.

FIG. 3 is a sectional view of a liquid spraying apparatus according to another embodiment of the present invention.

FIG. 4 is a partial side view of the device of FIG. 3;

FIG. 5 is a sectional view of a liquid spraying apparatus according to still another embodiment of the present invention.

FIG. 6 is a partial side view of the apparatus of FIG.

FIG. 7 is a sectional view of a liquid spraying apparatus according to still another embodiment of the present invention.

FIG. 8 is a cycle system diagram of a general absorption chiller / heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature regenerator 2 Low temperature regenerator 3 Condenser 4 Evaporator 5 Absorber 6 High temperature solution heat exchanger 7 Low temperature solution heat exchanger 8 Solution pump 9 Refrigerant pump 19 Liquid introduction pipe 19a Branch header 20 Spray device 21, 21A, 21B Distribution pipe 22, 22A, 22B Liquid distribution orifice 23, 23B Cover plate 24, 24A Droplet dispersion plate 25, 26, 27, 28, 29 Recess 30 Rod

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroaki Yoda 603, Kandamachi, Tsuchiura-shi, Ibaraki Prefecture Inside Tsuchiura Plant, Hitachi, Ltd. Inside

Claims (7)

(57) [Claims] At least a regenerator, a condenser, an evaporator,
Equipped with an absorber, a solution heat exchanger, a refrigerant pump, a solution pump, and a piping system for operatively connecting these devices. Spraying the refrigerant on the cold and hot water flow heat transfer tubes in the evaporator and cooling the absorber In an absorption chiller / heater configured to spray a solution on a water flow heat transfer pipe, a distribution pipe branched from the liquid introduction pipe of the pipe system and arranged in parallel with the heat transfer pipe, and a hole is opened in the distribution pipe. A plurality of liquid distribution orifices, a cover plate fixed to the outside of the distribution pipe and holding the gap, and a droplet fixed to the inside of the cover plate and the gap while holding the gap. An absorption chiller / heater provided with a refrigerant and solution spraying device comprising a dispersion plate. 2. At least a regenerator, a condenser, an evaporator,
Equipped with an absorber, a solution heat exchanger, a refrigerant pump, a solution pump, and a piping system for operatively connecting these devices. Spraying the refrigerant on the cold and hot water flow heat transfer tubes in the evaporator and cooling the absorber In an absorption chiller / heater configured to spray a solution on a water flow heat transfer pipe, a distribution pipe branched from the liquid introduction pipe of the pipe system and arranged in parallel with the heat transfer pipe, and a hole is opened in the distribution pipe. A plurality of liquid distribution orifices, a cover plate fixed to the outside of the distribution pipe and holding the gap, and a droplet fixed to the inside of the cover plate and the gap while holding the gap. A droplet dispersing plate having a comb-like shape; and a liquid drop distance between the droplet dispersing plate and the heat transfer tube of 3 millimeters. Characterized in that it is set in the range of from 9 mm to 9 mm Water machine. 3. The absorption cooling / heating apparatus according to claim 1, wherein a concave portion is provided in each of the droplet dispersing plate and the cover plate in the refrigerant and solution spraying device, and the concave portions are fitted and connected. Water machine. 4. A plurality of recesses are provided inside a cover plate of a refrigerant and solution spraying device to maintain a distance between a distribution pipe and a recess, and a part of the recess is provided on a distribution pipe surface. 3. The absorption chiller / heater according to claim 1, wherein the absorption chiller / heater is fitted with and joined to the water heater. 5. The absorption chiller / heater according to claim 1, wherein the cover plate and the droplet dispersion plate in the refrigerant and solution spraying device are made of engineering plastic. 6. At least a regenerator, a condenser, an evaporator,
Equipped with an absorber, a solution heat exchanger, a refrigerant pump, a solution pump, and a piping system for operatively connecting these devices. Spraying the refrigerant on the cold and hot water flow heat transfer tubes in the evaporator and cooling the absorber In an absorption chiller / heater configured to spray a solution on a water flow heat transfer pipe, a distribution pipe branched from the liquid introduction pipe of the pipe system and arranged in parallel with the heat transfer pipe, and a hole is opened in the distribution pipe. A plurality of liquid distribution orifices, a cover plate fixed to the outside of the distribution pipe and holding the gap, and a droplet fixed to the inside of the cover plate and the gap while holding the gap. A dispersing device comprising a refrigerant and a solution dispersing device, a rod-shaped body provided inside the cover plate, and the rod-shaped body inserted into a plurality of liquid distribution orifices opened in the distribution pipe to fix the cover plate and the cover plate; Droplet dispersion plate rotates around the distribution pipe Absorption chiller which is characterized in that to prevent Rukoto. 7. A distribution pipe branched from a liquid introduction pipe and arranged in parallel with a heat transfer pipe, a plurality of liquid distribution orifices opened in the distribution pipe, and a gap between the distribution pipe and the outside of the distribution pipe. A liquid dispersing apparatus comprising: a cover plate held and fixed; and a droplet dispersion plate fixed inside the cover plate while holding a gap with the cover plate.