JPH0827101B2 - Air cooled absorber - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air-cooled absorber used in an absorption heat source device.

BACKGROUND ART Conventionally, as an absorber used in an absorption heat source device,
There is one as shown in FIG. That is, the absorber has an upper header 53 having a vapor introducing port 51 and an upper space chamber 52, and a lower header 56 having a lower absorbing liquid discharge port 54 and a lower space chamber 55,
A heat transfer tube 58, which is arranged between the headers 53 and 56 in the vertical direction and has a large number of fins 57 attached around each of them, and a concentrated absorbent supply tube for supplying a concentrated absorbent into the upper space chamber 52. It consists of 59 and.

In the above configuration, from the concentrated absorbent supply pipe 59 to the upper space chamber
When the concentrated absorbing liquid supplied to the inside of the heat transfer pipe 52 drops inside the heat transfer pipe 58 along its inner wall surface, it absorbs steam to generate heat, and the heat is taken away by the cooling air via the fins 57. . Note that the cooled diluted absorbent drops into the lower space chamber 55 and then is discharged to the outside through the discharge port 54.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, according to the above-described conventional configuration, since the disorder of the liquid film falling in the heat transfer tube 58 is small, there is a problem that the vapor absorption capacity is low.

Therefore, an object of the present invention is to provide an air-cooled absorber capable of solving the above problems.

Means for Solving the Problems In order to solve the above problems, a first means of the present invention is to provide a steam inlet at an upper portion of a container having a space chamber and an outlet for a rare absorption liquid at a lower portion thereof. In this air-cooled absorber, a concentrated absorbent supply pipe is arranged in the upper part of the space chamber, and a plurality of cooling pipes for air cooling are arranged in the lower part of the space chamber, penetrating both side wall parts of the container.

In addition, the second means of the present invention is to drop the rare absorbent between the upper space chamber to which the steam inlet is connected and the lower space chamber to which the discharge port of the rare absorbent is connected, and to make a large number around the rare absorbent. The heat transfer tubes having the fins are arranged in the vertical direction, a partition plate is provided in the upper space chamber, and a steam guide passage is formed at one end side of the partition plate, and the concentrated absorbing liquid is provided below the partition plate in the upper space chamber. The supply pipe is arranged, and the concentrated absorbent supply pipe is provided with an ejection nozzle for ejecting the concentrated absorbent in a mist state toward the partition plate side and toward the vapor guide passage side.

Action According to the configuration of the first means, a plurality of air-cooling cooling pipes are pierced through the both side wall portions of the container in the space chamber where the concentrated absorbing liquid and the vapor are contacted and absorbed. Since the absorbing liquid falling in the space chamber collides with the cooling pipe and is dispersed, the concentrated absorbing liquid and the vapor are effectively brought into contact with each other, so that the vapor absorbing capacity is increased.

Further, according to the structure of the second means, since the concentrated absorbent supply pipe is provided with the jet nozzle for spraying the concentrated absorbent in the form of mist toward the partition plate side, the steam introduced from above the steam guide passage. And the concentrated absorbing liquid are effectively contacted with each other, so that the vapor absorbing capacity is increased.

Example Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a box-shaped container in which a space chamber 2 having a predetermined width is formed, and includes a pair of front and rear side wall plates (also referred to as tube plates) 3 and a pair of left and right end wall plates (only one of which is not shown) 4 And a bottom wall plate 6 provided with an outlet 5 for the rare absorbent, and a steam inlet 7 is provided at the upper ends of the pair of front and rear side wall plates 3. A concentrated absorbent supply pipe 8 having a number of nozzle holes 8a formed from one end wall plate 4 is inserted in the upper part of the space chamber 2 and the concentrated absorbent supply pipe 8 in the space chamber 2 is inserted.
At a lower position, a large number of cooling pipes 9 for air cooling are inserted and arranged in a plurality of stages between the side wall plates 3.

In the above configuration, the concentrated absorbent A supplied from the concentrated absorbent supply pipe 8 into the space chamber 2 is dispersedly supplied downward from the nozzle holes 8a and drops on the cooling pipe 9 in each stage,
The steam B introduced from the steam introducing port 7 absorbs heat to generate heat, is cooled by the air C flowing in the cooling pipe 9, and is discharged to the outside from the discharge port 5 provided in the bottom wall plate 6 of the space chamber 2. (See FIG. 2). In this way, the absorbing liquid that has absorbed the vapor is dispersed and effectively comes into contact with the vapor when it falls on the many cooling pipes 9, and the absorption capacity is increased.

In the above embodiment, the cooling pipe 9 is simply shown as a circular pipe, but, for example, as shown in FIG. 3, in order to promote the contact effect with steam and to enhance the cooling capacity,
Fins 11 and 12 may be attached to the inner and outer surfaces of the cooling pipe 9, respectively. Further, as shown in FIG. The fins 13 and 14 may be attached respectively.

Next, a second embodiment of the present invention will be described with reference to FIG.

The upper space chamber 33 is connected to the steam inlet 32.
A partition plate 34 is provided in the upper space 33, and a steam guide passage 35 is formed at one end thereof. A large number of fins 39 are provided around the upper header 31 and the lower header 38 which is connected to the outlet 36 for the rare absorbent and has the lower space 37.
A heat transfer tube 40 to which is attached is arranged in the vertical direction. A concentrated absorbent supply pipe 41 is inserted and arranged below the partition plate 34 in the upper header 31, and a jet nozzle for ejecting the concentrated absorbent in a mist state to the concentrated absorbent supply pipe 41. A plurality of 42 are attached at a predetermined pitch, and the ejection directions of these ejection nozzles 42 are obliquely upward. The partition plate 34 is for preventing the concentrated absorbing liquid from entering the vapor introducing port 32 side.

In the above configuration, from the concentrated absorbent supply pipe 41 to the upper space chamber
The concentrated absorbing liquid A supplied into the inside 33 is sprayed in the form of mist from the spray nozzle 42 toward the partition plate 34, and the steam guide passage is formed.
It effectively contacts the steam B introduced from above 35 and absorbs the steam efficiently. Then, the rare absorption liquid that has absorbed the vapor and becomes thin enters the heat transfer tube 40, where the cooling fins are provided.
It is efficiently cooled by air through 39. After this, the lower space room 37
It enters inside and is discharged from the discharge port 36 to the outside.

EFFECTS OF THE INVENTION As described above, according to the configuration of the first means of the present invention, in the space chamber where the concentrated absorbing liquid and the vapor come into contact with each other to be absorbed,
Since a plurality of cooling tubes for air cooling are arranged penetrating both side walls of the container, the absorbing liquid that falls in the space chamber collides with the cooling pipes and is dispersed, so that the concentrated absorbing liquid and vapor are effective. They come into contact and therefore have a higher vapor absorption capacity.

Further, according to the configuration of the second means of the present invention, since the concentrated absorbent supply pipe is provided with the ejection nozzle for ejecting the concentrated absorbent in a mist state toward the partition plate side and toward the vapor guide passage side,
The vapor introduced from above the vapor guide passage and the concentrated absorbing liquid can be effectively brought into contact with each other, so that the vapor absorbing capacity can be enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 show a first embodiment of the present invention. FIG. 1 is a partially cutaway perspective view, FIG. 2 is a sectional view for explaining an operating state, 3 and 4 are sectional views showing a modified example of the cooling pipe, FIG. 5 is a sectional view showing a second embodiment of the present invention, and FIG. 6 is a sectional view showing a conventional example. 1 ... Container, 2 ... Space room, 5 ... Discharge port, 7 ... Steam inlet port, 8 ... Concentrated absorbent supply pipe, 9 ... Cooling pipe, 31 ...
Upper header, 32 …… Steam inlet, 33 …… Upper space room,
36 …… outlet, 37 …… lower space chamber, 38 …… lower header, 40 …… heat transfer tube, 41 …… concentrated absorbent supply tube, 42 …… jet nozzle.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Maehara 5-3, Nishikujo 5-chome, Konohana-ku, Osaka-shi, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Haruo Abe 5-chome, Nishikujo, Konohana-ku, Osaka-shi, Osaka 3-28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Tetsuro Furukawa 5-3-8 Nishikujo Nishi, Konohana-ku, Osaka City, Osaka Prefecture 72-3 In Hitachi Shipbuilding Co., Ltd. (72) Kazuyuki Miyake Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture 5-3 28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Tatsuhiko Umeda Nishikojo 5-3 28 Nishikojo, Konohana-ku, Osaka City Osaka Prefecture (72) Inventor Takeshi Yano Konohana-ku, Osaka City, Osaka Prefecture Nishikujo 5-chome 3-28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Tadashi Kawasaki 5-9-28 Nishikujo 5-chome Nishikojo, Konohana-ku, Osaka-shi, Osaka (56) Reference Sho 63-32265 (JP, A) JP 62-202972 (JP, A) JP 62-225871 (JP, A)

Claims (2)

[Claims] 1. A container having a space chamber is provided with a steam inlet at an upper part thereof and a discharge port of a rare absorbent is provided at a lower part thereof, and a concentrated absorbent supply pipe is arranged at an upper part of the space chamber of the container. An air-cooled absorber characterized in that a plurality of air-cooling cooling pipes are arranged in a lower portion so as to penetrate both side wall portions of the container. 2. A heat transfer tube having a large number of fins around it for dropping a rare absorbing liquid between an upper space chamber to which a steam inlet is connected and a lower space chamber to which a rare absorbing liquid discharge port is connected. Is arranged in the vertical direction, a partition plate is provided in the upper space chamber, a vapor guide passage is formed at one end of the partition plate, and a concentrated absorbent supply pipe is arranged below the partition plate in the upper space chamber. , In this concentrated absorbent supply pipe,
An air-cooled absorber characterized in that a jet nozzle for jetting the concentrated absorbing liquid in the form of mist toward the partition plate side and toward the steam guide passage side is provided.