JP3481972B2 - Absorption refrigerator regenerator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small absorption refrigerator. 2. Description of the Related Art FIG. 2 shows the structure of a regenerator of this type, in which a bell-shaped container 1 having a double structure is placed in a cylindrical gas cooker 2 having an exhaust port 3 at an upper portion of a side wall. , Lower edge of container 1 and floor 4
And a gas burner 7 is disposed in an inner space (combustion chamber) 6 of the container 1. The diluted solution supplied to a lower portion of the container 1 by a diluted solution injection pipe is supplied to the lower portion of the container 1. It is heated and boiled and sent out to a gas-liquid separator through a liquid raising pipe. In the combustion chamber 6, a cylindrical partition is provided upright around the burner 7, and the upward flow and the downward flow due to the convection of the combustion gas are rectified by the cylindrical partition, so that the thermal efficiency is improved. Since the stagnation in the upper part of the combustion chamber 6 has been eliminated and the combustion gas does not flow back, the consumption of the burner top has been greatly improved. [0003] However, in the above-described configuration, when hot air passes through the gap 5 between the lower edge of the container 1 and the floor surface 4, heat is generated on the container 1 side by the internal solution. Although carried away, there is a disadvantage that the floor surface 4 is overheated by hot air and easily worn. The screen is directly provided from the burner 7 to the gap 5.
By shutting off the exhaust gas going to
Of the container 1
On the floor surface 4 facing the lower edge, the hot air blows and turns over, so that there is still a problem that burnout due to overheating is remarkable and the durability of the apparatus is deteriorated. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a regenerator structure capable of preventing burning at the folded portion with a simple structure. As shown in FIG. 1, a regenerator of an absorption refrigerator according to the present invention comprises a double bell-shaped container 1 having a cylindrical shape having an exhaust port 3 at an upper portion of a side wall. The dilute solution in the container 1 is heated by a gas burner 7 disposed in an inner space 6 of the container 1 with a gap 5 provided between the lower edge of the container 1 and the floor surface 4 in the container 2. In the regenerator as described above, a combustion air supply path 8 to a gas burner 7 is provided immediately below a floor 4 facing a lower edge of the container 1, and combustion is performed by a blower 13.
Air from outside to the air supply channel 8
And an annular supply just below the floor 4 of the combustion air supply passage 8.
The road and the lower space are separated by a partition plate 14 . Since the combustion air supply passage 8 is provided immediately below the floor surface 4 facing the lower edge of the container 1, the floor material in this portion is cooled by the combustion air to lower the temperature, and Burning due to burning is prevented. This also preheats the combustion air, thereby improving the thermal efficiency of the device. FIG. 1 shows an embodiment of a regenerator according to the present invention. A bell-shaped container 1 having a double structure has a connection port 10 of a liquid supply pipe 9 for sending a boiling solution to a gas-liquid separator.
Is provided at the center of the dome-shaped upper surface, and the dilute solution injection pipe 1 is inserted through the peripheral body of the container 1 from one location on the periphery of the upper surface.
A dilute solution is supplied from the lower end opening of the first solution. The container 1 is suspended in a cylindrical gas cooker 2, and the space inside and outside the container 1 is defined by a gap 5 formed between the lower edge of the container 1 and the floor 4 of the gas cooker 2. Since a cylindrical partition 12 is erected in the inner space 6 of the container 1 and the gas burner 7 is arranged inside the cylindrical partition 12,
The flue gas that has risen inside the partition 12 descends beyond the upper edge of the partition 12 and rises outside the container 2 through the gap 5, and rises in the cylindrical shell-shaped space outside the container 2. The gas is discharged from the exhaust port 3 to the outside. The partition 12 is made of a heat-resistant material such as a ceramic, and is heated by a flame and glows red.
The container 1 is also heated by heat radiation. The hot air that has descended between the inner surface of the container 1 and the outer surface of the partition 12 passes through the gap 5 between the lower edge of the container 1 and the floor 4 to the outer space. At this time, even if the floor surface 4 is heated, since the cold air from the outside which has been pressure-fed by the blower 13 passes through the combustion air supply passage 8 provided immediately below the floor surface 4, To prevent the floor material from being burned, and the combustion air is preheated thereby,
The thermal efficiency of the device is also improved. In the figure, reference numeral 14 denotes a partition plate provided between the annular combustion air supply passage 8 and the lower space.
Combustion air is supplied to the burner 7 after making a full round of the annular supply path 8 directly below the floor surface to allow sufficient heat exchange. According to the present invention, as described above, when the hot air passes through the gap 5 between the lower edge of the container 1 and the floor 4, even if the floor 4 is heated, Since cold air from the outside passes through the provided combustion air supply passage 8, the floor surface 4 is not overheated as in the prior art, and damage to the floor material can be prevented. Since the working air is preheated, there is the advantage that the thermal efficiency of the device is also improved.
In addition, an annular supply path directly below the floor 4 of the combustion air supply path 8
Since the lower space is partitioned by the partition plate 14, the combustion space
Air is made to make a round in the annular supply path just below the floor 4 to sufficiently exchange heat
After that, it can be supplied to the burner 7 and the combustion air
The heat is further preheated and the thermal efficiency of the device is improved.
There is a point. Further, the air is supplied to the combustion air supply path 8 by the blower 13.
Air is pumped from outside, so low-temperature air
Air is sent by the blower 13 and the capacity of the blower 13 is reduced.
If it can be reduced and the durability of the blower 13 can be improved
There is an advantage. In the present embodiment, the partition 12 is provided in the combustion chamber 6, but it is needless to say that the same effect can be obtained even without the partition 12.

[Brief description of the drawings] FIG. 1 is a longitudinal sectional view of one embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a conventional example. [Explanation of symbols] 1 container 2 Gas kettle 3 Exhaust port 4 floor 5 gap 6 combustion chamber (internal space) 7 Gas burner 8 Air supply path for combustion 9 Pumping pipe 10 Connection port 11 Dilute solution injection tube 12 partitions 13 Blower 14 Divider

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Shinsuke Takahashi 4-1-2, Hirano-cho, Chuo-ku, Osaka City Inside Osaka Gas Co., Ltd. (56) References JP-A-1-102260 (JP, A) Hei 5-525441 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25B 33/00

Claims (1)

(57) [Claim 1] A bell-shaped container having a double structure is placed in a cylindrical gas kettle having an exhaust port at an upper portion of a side wall, and a gap is provided between a lower edge of the container and a floor surface. In a regenerator in which a dilute solution in a container is heated by a gas burner disposed in a space inside the container, air for combustion to the gas burner is provided immediately below a floor surface facing a lower edge of the container. Provide a supply path and use a blower
Air should be supplied from outside to the combustion air supply passage.
And an annular supply channel just below the floor of the combustion air supply channel
A regenerator of an absorption refrigerator that separates the space between the space and the lower space with a partition plate .