JP3173738B2 - 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 regenerator used for a small absorption refrigerator.

[0002]

2. Description of the Related Art In recent years, as a structure of a regenerator capable of efficiently boiling a solution, as shown in FIG. 3, the shape of a solution heating container 1 is a double-bell shape, and the upper surface of the container 1 hits the top of the bell. In addition, a liquid pipe connection port 2 is provided at the bottom of the container 1, a dilute solution injection port 3 is provided at a lower edge of the container 1, and a space inside the container 1 is used as a combustion chamber 4, and a gas burner 5 is disposed below the combustion chamber 4. (Japanese Unexamined Patent Publication No. 2-2870065). According to this configuration, the shape of the container is simple and low-cost, and since the flame of the burner is surrounded by the inner wall of the container, heat radiation from the flame is almost completely used, and Since the inner wall surfaces face each other, secondary radiation from the inner wall surface is not wasted. In addition, the combustion gas that descends along the inner wall surface of the container due to convection further rises along the outer wall surface of the container. At this time, since the container is vertical and rotationally symmetric, the outer wall surface is formed by the combustion gas. It can be completely surrounded and can achieve high thermal efficiency.

[0003]

However, the above configuration has the following problems.
Since the low-temperature dilute solution is supplied to one location on the lower edge of the container 1, the temperature in the container 1 becomes uneven, and this uneven temperature lowers the thermal efficiency. Further, since the combustion gas is raised in the central part in the combustion chamber 4 and lowered in the peripheral part in the combustion chamber 4, the combustion gas easily stays in the upper part of the combustion chamber. Although the spread is narrowed, the combustion gas is easy to convect in the combustion chamber, but since there is no partition wall between the updraft and the downdraft, both airflows are mixed with each other, and as a result, a decrease in thermal efficiency is avoided. There was a problem that can not be. An object of the present invention is to solve these problems and to provide a structure of a regenerator having high thermal efficiency.

[0004]

Means for Solving the Problems The present invention (claim 1) provides:
As shown in FIG. 1, the shape of a solution heating container 1 is a bell-shaped double structure, and a pumping pipe connection port 2 is provided on an upper surface of a top portion thereof, and a dilute solution injection port 3 is provided on a lower edge thereof. The inside space of 1 is a combustion chamber 4, and the container 1 is suspended in a cylindrical gas cooker 6 having a gas burner 5 disposed below, and the entire circumference is provided between the lower edge of the container 1 and the floor of the cooker 6. In the regenerator of the absorption refrigerator having a gap 11 over the entire surface, a partition plate 9 is provided over the dilute solution inlet 3 in the container 1 over the entire circumference, and the partition plate 9 has small holes 10 for discharging the dilute solution. With such a configuration, even if the low-temperature diluted solution is supplied to only one location on the lower edge of the container 1, it can be distributed over the entire periphery of the container. Can be discharged almost uniformly over a wide range, reducing the thermal efficiency due to uneven temperature. There is an advantage that the record is not.

Further, as shown in FIG. 2, a bell-shaped solution heating container 1 having a double structure is hung in a cylindrical gas tank 6, and the lower edge of the container 1 is In a regenerator of an absorption refrigerator having a gap 11 provided over the entire circumference with the floor surface of the container 6, a plurality of ventilation cylinders 13 are provided above the peripheral side wall of the container 1.
According to this configuration, although the number of welds increases and the structure of the container 1 becomes slightly complicated, the problem of combustion gas stagnation in the upper part of the combustion chamber is solved.
Since the thermal efficiency can be greatly improved, and it is not necessary to narrow the spread of the flame of the gas burner 5, there is an advantage that a general-purpose inexpensive gas burner can be used.

[0006]

FIG. 1 shows the structure of a regenerator according to the first embodiment of the present invention. A double bell-shaped container 1 is suspended in a cylindrical gas pot 6 and has a lower edge. A gap 11 through which the combustion gas passes is formed between the furnace 6 and the floor surface over the entire circumference. The top of the vessel 1 is exposed to the outside of the kettle 6, and on the top surface of the top is provided a connection port 2 of a liquid pumping pipe 7 for sending the boiling solution from the regenerator to the upper gas-liquid separator. ing. In addition, a dilute solution inlet 3 is provided at the lower edge of the container 1. However, in this embodiment, a dilute solution (connecting portion) is not required to be provided in a high-temperature portion where the combustion gas hits as much as possible. The supply pipe 8 is inserted from the upper surface of the container 1, and the tip thereof is used as the inlet 3. A partition plate 9 extending over the entire circumference is provided slightly above the injection port 3, and openings such as small holes 10 and slits for discharging a dilute solution are evenly distributed on the partition plate 9, so that the inside of the container 1 is formed. To prevent uneven temperature
This improves the thermal efficiency of the regenerator.

FIG. 2 shows another embodiment of the present invention, in which a plurality of ventilation cylinders 13 are provided in the upper portion of the peripheral side wall of the container 1. With this configuration, the number of welds is increased and the cost is slightly increased. However, since there is no possibility that the combustion gas remains in the upper part of the combustion chamber 4, the thermal efficiency in the regenerator can be improved. Further, in the conventional example shown in FIG. 3, in order to prevent the combustion gas from staying in the upper part of the combustion chamber 4, the flame holes of the gas burner 5 are designed so that the spread of the flame is narrowed, and along the inner wall surface of the combustion chamber 4. According to the present invention, it is not necessary to use a dedicated gas burner for preventing stagnation. When the ventilation tube 13 is provided, the exhaust port 12 of the gas cooker 6 is provided at a lower portion.

[0008]

According to the present invention, as described above, the partition plate 9 is provided all over the dilute solution inlet 3 inside the container 1 over the entire circumference, and the small plate 1 for discharging the dilute solution is formed in the partition plate 9.
0, since the openings such as slits are evenly distributed, even if the low-temperature dilute solution is supplied to only one location on the lower edge of the container 1, it can be discharged almost uniformly over the entire circumference, and the temperature is not uniform. There is an advantage that there is no possibility of lowering the thermal efficiency. Further, since a plurality of ventilation cylinders 13 are provided in the upper portion of the peripheral side wall of the container 1, a general-purpose inexpensive gas burner can be used, and convection in the combustion chamber can be reduced. Since it can be prevented, there is an advantage that high thermal efficiency can be realized.

[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 another embodiment.

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

[Description of Signs] 1 Container 2 Lifting pipe connection port 3 Dilute solution injection port 4 Combustion chamber 5 Gas burner 6 Gas pot 7 Lifting pipe 8 Dilute solution supply pipe 9 Partition plate 10 Small hole 11 Gap 12 Exhaust port 13 Vent cylinder

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

Claims (2)

(57) [Claims] 1. A solution heating container having a double bell-shaped shape, a connection port for a liquid supply pipe provided on an upper surface of a top portion thereof, and a dilute solution injection port provided on a lower edge thereof to burn an inner space of the container. A cylinder with a gas burner below the container
Between the lower edge of the container and the floor of the kettle.
For regenerators of absorption refrigerators with gaps all around
Around the dilute solution inlet inside the container.
A vertical partition plate is provided, and this partition plate is used for discharging a dilute solution.
A regenerator for an absorption refrigerator in which openings such as small holes and slits are evenly distributed . 2. A double-shaped bell for a solution heating container.
When a pumping port connection is provided on the top of the top
In addition, a dilute solution inlet is provided at the lower edge to burn the inside space of the container
A cylinder with a gas burner below the container
Between the lower edge of the container and the floor of the kettle.
For regenerators of absorption refrigerators with gaps all around
A regenerator for an absorption refrigerator, comprising a plurality of ventilation cylinders penetrating the upper part of the peripheral side wall of the container .