JPH05157400A - Adsorption type reactor - Google Patents

Abstract

PURPOSE:To obtain an adsorption type reactor having a simple structure so as to reduce in size an adsorption type refrigerator, a chilled water unit using warm water of a relatively low temperature as a heat source and to enhance an efficiency by utilizing solid adsorbent. CONSTITUTION:The adsorption type reactor comprises a plate fin type heat exchanger in which four passages of a warm water passage 10, an adsorbent layer 11, a vapor passage 12 and a chilled water passage 13 are laminated. The central two passages are connected through a porous plate 4 but formed of sealed chambers, which are reduced under pressure to a predetermined value. One of the two passages is formed in the layer 11 in which adsorbent 5 is filled and the other is formed in the passage 12 of vapor generated from the heated adsorbent 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses hot water having a relatively low temperature, which has been rarely used, and supplies cold water by utilizing the water adsorption / desorption action of an adsorbent or an adsorption used as a refrigerator. This is a plate fin type heat exchanger in which hot water passages, adsorbent packed bed, steam passages, and cold water passages are laminated together, and the adsorption reaction has a simple structure to achieve downsizing and high efficiency. Regarding vessels.

[0002]

2. Description of the Related Art Absorption refrigerators that are widely used at present include
Using a combination of water and lithium bromide as the refrigerant and absorbent, 1
Single-effect absorption refrigerator utilizing low-pressure steam of about 00 kPa, high-temperature water of 80 to 150 ° C, or waste gas of less than 400 ° C, medium-pressure steam of about 800 kPa, or 1
A double-effect absorption refrigerator utilizing high-temperature water of about 90 ° C. or waste gas of 400 ° C. or higher is known. Each of the absorption refrigerators is configured to operate under a high vacuum, a so-called vacuum pump is indispensable, and various pipes surrounding the generator and the condenser have a wide variety of extremely complicated configurations.

[0003]

In order to make clean energy and save energy, an absorption refrigerator using solar heat or waste heat has the same structure as the refrigerator described above, and since the hot water temperature is low, the full liquid type is changed to a spray type. Although it is known that the generator is used as a generator, it is inefficient and there is a dislike that the device becomes large in size in order to obtain a required cold water temperature.

Therefore, for example, Japanese Patent Laid-Open No. 58-18446.
7, Japanese Utility Model Laid-Open No. 63-125758, Japanese Patent Laid-Open No. 63-46.
Japanese Patent No. 356, etc. propose a refrigerator or the like that utilizes the water adsorption / desorption action of an adsorbent such as silica gel. The adsorption refrigerating machine and the like proposed above are mainly configured by arranging a required heat exchange unit in a vacuum container and filling an adsorbent, and the structure is generally complicated, and it is difficult to reduce the size and increase the efficiency. there were.

According to the present invention, a solid adsorbent is used, and the above-mentioned problems in an adsorption type refrigerator and a water chiller that use hot water of a relatively low temperature as a heat source can be solved, and a structure in which the size and efficiency are improved. It is an object of the present invention to provide an adsorption reactor which has a simple structure and can be used in a refrigerator or the like.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a plate fin type heat exchanger in which at least four layers are laminated, and two central passages form a depressurized closed chamber through a perforated plate, one of which is formed. Adsorbent layer filled with adsorbent, the other is the steam passage of the steam generated from the adsorbent, the hot water passage for the hot water of the heat source to flow in and out adjacent to the adsorbent layer side, the cooling water on the steam passage side The adsorbing reactor is characterized in that the respective cold water passages that flow in and out of are laminated adjacent to each other.

Further, the present invention comprises a laminated plate fin type heat exchanger, wherein adsorbent layers filled with an adsorbent are adjacently laminated via a perforated plate at the upper part of the vapor passage to form a decompression closed chamber. And an adsorbent reactor characterized in that a hot water passage through which hot water from a heat source flows in and out is adjoined on the adsorbent layer side, and a cold water passage through which a medium to be cooled flows in and out is adjoined under a vapor passage. Is.

Further, according to the present invention, a plurality of the adsorption type reactors having the above-mentioned structure are arranged in parallel, and hot water and cooled water are alternately connected by piping so that hot water and cooled water can be alternately supplied. The adsorbent is heated in the reactor to cause desorption, and the vapor path is heated in the other adsorption reactor to adsorb to the adsorbent to be cooled so that they can interact with each other and can be used continuously. It can be used as a machine.

[0009]

In the present invention, the adsorbent is zeolite,
Water, methanol, ammonia or the like can be used as an evaporation medium such as silica gel or activated carbon.

Disclosure of the Invention Based on the Drawing Structure 1 FIG. 1 is a partially broken perspective view showing the structure of an adsorption reactor according to the present invention. The adsorption reactor according to the present invention is
The corrugated fins 2 are sandwiched between the plates 1, and the spacer fins 3 are arranged around the plate fins to form a plate fin type heat exchanger in which four passages are stacked. The passages on the front side of FIG. Adsorbent layer 11, vapor passage 1
2. A cold water passage 13 is provided.

The central two passages of the four laminated passages communicate with each other through the perforated plate 4, but constitute a closed chamber, and the pressure is reduced to a required value, and one of them is passed through the perforated corrugated fin 7. An adsorbent layer 11 filled with the adsorbent 5,
The other side constitutes a vapor passage 12 for the vapor generated from the heated adsorbent 5. The spacer 6 in the steam passage 12 is used to secure a flow path for steam. It is preferable that the corrugated fins 2 in the steam passage 12 are perforated or have slits, because steam or water comes into contact with both wall surfaces to improve heat exchange efficiency. Therefore, the hot water passage 10 having the inlet / outlet of the hot water as a heat source is adjacently laminated on the adsorbent layer 11 side, and the respective passages of the cold water passage 13 having the inflow / outlet of the cooled water on the steam passage 12 side are adjacently laminated. is there.

First, when the required hot water is fed to the hot water passage 10 in the regeneration process, the adsorbent 5 in the adsorbent layer 11 adjacent to the adsorbent 5 is heated, and, for example, water contained in the adsorbent evaporates, It passes through the perforated plate 4 and enters the steam passage 12. In the cold water passage 13 adjacent to the steam passage 12 filled with steam, the cooling water removes the latent heat of vaporization of the steam to condense the steam into water.

On the contrary, in the adsorption process, if cooling water or other cold water is supplied to the hot water passage 10 to cool the adsorbent 5 and the water to be cooled is sent to the cold water passage 13, the latent heat of vaporization is taken away first. The water in the steam passage 12 which has been broken into water is heated and evaporated to cool the water to be cooled. Also, the vaporized vapor is adsorbent 5
Is adsorbed on.

Therefore, the adsorption reactor having the above-mentioned structure
The machines are arranged in parallel, and hot water / cooling water and cooling water / cooled water are alternately connected to each hot water passage 10 and the cold water passage 13 by pipe connection so that the adsorbent 5 is heated by one of the adsorption reactors. An adsorbent 5 that is desorbed, feeds water to be cooled to the cold water passage 13 in the other adsorption reactor to heat the steam passage 12, and supplies water to be cooled or other cold water to the hot water passage 10 to cool it. Can be adsorbed to each other so that they can interact with each other, one adsorption reactor is used for regeneration, the other adsorption reactor is used for cold water production, and this can be repeated for continuous use.

Structure 2 FIG. 2 is a partially broken perspective view showing another structure of the adsorption reactor according to the present invention. The adsorption reactor of FIG.
The plate fin type heat exchanger has the same structure as in the above example, but is divided into an upper part and a lower part, and the upper part is the adsorbent layer 11
It has a three-layer structure of a steam passage 12 and a hot water passage 10 sandwiching
The lower part has a two-layer structure of a steam passage 12 and a cold water passage 13, and the steam passage 12 has a structure in which the upper part and the lower part communicate with each other in the same layer, and has a four-layer structure when viewed from the whole reactor.

The upper vapor passage 12 and the adsorbent layer 11 among the laminated passages communicate with each other through the perforated plate 4 but form a closed chamber, and the adsorbent layer 11 is depressurized to a required value. Is filled with an adsorbent 5. Therefore, in the upper part of the reactor, the hot water passage 10 having the inlet / outlet of hot water as a heat source on the adsorbent layer 11 side is adjacently stacked, and in the lower part of the reactor, the cold water passage 1 having the inlet / outlet of water to be cooled on the steam passage 12 side.
The three passages are laminated adjacent to each other. The adsorption type reactor of FIG. 2 having such a structure has the same effect as that of the structure of FIG. 1, but the lower part of the vapor passage 12 functions as a medium liquid (condensed water) reservoir, and therefore has excellent water retention performance. ing.

[0017]

Example By the way, when silica gel is used as the adsorbent and water is used as the evaporation medium, when hot water of 80 ° C. is fed to the hot water passage during regeneration, the adsorbent in the adjacent adsorbent layer is heated,
After passing through the perforated plate, it enters the steam passage and is cooled and condensed by the cooling water at 31 ° C. in the cold water passage adjacent thereto.
Further, at the time of adsorption, the water to be cooled at 14 ° C in the cold water passage is cooled to 7 ° C by evaporation of water. The vapor is adsorbed by the adsorbent layer adjacent to the adsorbent layer. At this time, cooling water at 31 ° C. is flowed through the hot water passage to cool the adsorbent.

[0018]

The adsorption reactor according to the present invention comprises a plate fin type heat exchanger in which hot water passages, adsorbent-packed beds, steam passages, and cold water passages are laminated, and has a simple structure and is miniaturized. High efficiency can be achieved.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing the structure of an adsorption reactor according to the present invention.

FIG. 2 is a partially cutaway perspective view showing another configuration of the adsorption reactor according to the present invention.

[Explanation of symbols]

 1 Plate 2 Corrugated Fin 3 Spacer 4 Perforated Plate 5 Adsorbent 6 Spacer 7 Perforated Corrugated Fin 10 Hot Water Passage 11 Adsorbent Layer 12 Steam Passage 13 Cold Water Passage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuji Yanagi 3600-80 Nakane, Katsuta-shi, Ibaraki Prefecture (72) Inventor Masaru Sanada 3-3-18 Takamihara, Kukizaki-cho, Inashiki-gun, Ibaraki Prefecture (72) Inventor Keisuke Kasahara Tokyo 3-6-11 Shirasagi, Nakano-ku, Tokyo

Claims (2)

[Claims] 1. An adsorbent having a structure of a plate fin type heat exchanger in which at least four layers are laminated, two central passages constitute a decompression closed chamber through a perforated plate, and one of which is filled with an adsorbent. Layer, the other is a steam passage for the steam generated from the adsorbent, hot water passages where hot water of the heat source flows in and out are adjoined on the adsorbent layer side, and cold water passages where the cooling medium flows in and out on the steam passage side. An adsorption-type reactor characterized in that passages are laminated adjacent to each other. 2. A decompression closed chamber is constructed by adjoining adsorbent layers filled with an adsorbent through a perforated plate at the upper part of a steam passage, which comprises a laminated plate fin type heat exchanger. An adsorption reactor characterized in that hot water passages through which hot water of a heat source flows in and out are adjoined on the adsorbent layer side, and cold water passages through which a medium to be cooled flows in and out under a vapor passage.