JP3127036B2 - Absorption refrigerator regenerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small absorption refrigerator.

[0002]

2. Description of the Related Art FIG. 2 shows the structure of a bell-shaped regenerator developed by the present inventors. A connection port 4 for the liquid supply pipe 3 is provided on the exposed upper surface, and a dilute solution injection port 5 is provided on the lower edge of the container 2, and a space inside the container 2 is a combustion chamber 8 of a gas burner 7. In this structure, most of the combustion gas rises in the central portion in the combustion chamber 8 by convection and descends along the inner wall of the container 2, and the lower edge of the container 2 and the floor surface 9 of the combustion chamber 8 come into contact with each other. Through the gap 10 provided between the containers 2
Is raised and exhausted, but a part of the combustion gas directly escapes from the gap 10 without circulating in the combustion chamber 8, so that stagnation tends to occur in the upper part of the combustion chamber 8. In addition to causing a decrease in thermal efficiency, the burner top and the vent 10
There is a disadvantage that the floor under the floor is easily damaged due to high heat.

FIG. 3 shows an improvement over the above-mentioned drawback, in which the above-mentioned gap 10 is eliminated, and a plurality of ventilation tubes 11 are provided in the upper part of the peripheral side of the container 2 instead. It is designed to escape from 11 and descend along the outer surface of the container 2 to be exhausted. According to this structure,
Although the problems of stagnation of the combustion gas and damage to the floor surface described above are solved, on the other hand, a large number of welds are to be provided in the container 2 of the absorbent (lithium salts) solution which is highly corrosive at high temperatures. There has been a problem that corrosion due to stress is likely to occur and durability is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and eliminates the need for increasing the number of welds in the container 2.
An object of the present invention is to provide a structure of a regenerator capable of eliminating stagnation of combustion gas and preventing damage to a burner top and a floor surface.

[0005]

As shown in FIG. 1, a regenerator of an absorption refrigerator according to the present invention comprises a double bell-shaped container 2 and a cylindrical gas cooker having an exhaust port 11 at an upper portion of a side wall. 1
A space 10 is provided between the lower edge of the container 2 and the floor 9, and the connection port 4 of the liquid pump 3 is provided on the upper surface of the container 2. The injection port 5 is provided, a cylindrical partition 6 made of a heat-resistant material is erected in an inner space 8 of the container 2, and a gas burner 7 is arranged inside the partition 6.

[0006]

The upward flow and the downward flow due to the convection of the combustion gas are rectified by the cylindrical partition 6, so that the stagnation at the upper part of the combustion chamber is eliminated, and the gas flow directly from the gas burner to the gap 10 is reduced by the partition 6. As a result, the heat efficiency is improved, and the gas flow passing through the gap 10 exchanges heat with the inner wall of the container 2 to reduce the temperature. Since the combustion gas does not flow backward, there is no risk of damage. Further, a partition 6 made of a heat-resistant material is provided so as to surround the flame of the gas burner 7, and receives the heat to red-heat, so that the heat radiation can further improve the thermal efficiency.

[0007]

FIG. 1 shows an embodiment of a regenerator according to the present invention. A bell-shaped melting vessel 2 having a double structure has a connection port 4 of a liquid pumping pipe 3 for sending a boiling solution to a gas-liquid separator.
Is provided at the center of the upper surface, and a dilute solution inlet 5 is provided at the lower edge. In this embodiment, the dilute solution supply pipe 12 is inserted from above the container 2 so as not to disturb the flow of the combustion gas.
Although the lower end is used as the inlet 5, a supply pipe may be connected directly to the outer surface of the lower edge of the container 2. Note that a partition plate 13 provided over the entire periphery slightly above the lower end inside the container.
In addition, the solution discharge holes 14 are evenly distributed so that the temperature in the container is not biased. The container 2 is suspended in a cylindrical gas pot 1, and the space inside and outside the container 2 is communicated by a gap 10 formed between the lower edge of the container 2 and the floor of the pot 1. Further, a cylindrical partition 6 is provided upright in the inner space of the container 2, and a gas burner 7 is arranged inside the cylindrical partition 6. It descends outside, rises in the cylindrical shell-shaped space outside the container 2 through the gap 10, and is discharged to the outside from the exhaust port 11 on the upper side wall of the kettle 1. Further, the partition 6 is formed of a heat-resistant material such as a ceramic, and is arranged so that a flame strikes the partition. This causes the partition 6 to glow red.

[0008]

According to the present invention, as described above, in the combustion chamber inside the bell-shaped container, the ascending flow and the descending flow are rectified by a cylindrical partition, so that the combustion gas stays in the upper portion of the combustion chamber. Since the combustion gas that escapes directly from the gas burner to the gap by the partition is cut off, there is an advantage that the thermal efficiency is improved accordingly and the floor and the burner top are not worn by the high-temperature gas, In addition, since there is no ventilation cylinder penetrating the container, there is no need to increase the number of welds that cause stress corrosion, and there is an advantage that durability can be improved. Since the inner wall of the container is heated by the radiant heat, there is an advantage that the heat transfer efficiency is further improved.

[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.

FIG. 3 is a longitudinal sectional view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas pot 2 Container 3 Pumping pipe 4 Connection port 5 Solution injection port 6 Screen 7 Gas burner 8 Combustion chamber 9 Floor surface 10 Gap

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-64-102260 (JP, A) JP-A-2-287065 (JP, A) JP-A-3-39871 (JP, A) JP-A-3-302 39875 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25B 33/00

Claims (1)

(57) [Claims] 1. A bell-shaped container having a double structure is suspended in a cylindrical gas kettle having an exhaust port at an upper portion of a side wall with a gap provided between a lower edge of the container and a floor surface. In addition to providing a connection port for the liquid pump on the upper surface, a dilute solution injection port is provided on the lower edge of the container,
A regenerator for an absorption refrigerator in which a cylindrical partition is erected in the space inside a container and a gas burner is arranged inside the partition.