JPH0754214B2 - Double-effect absorption refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention provides a gas-liquid separator and a low-temperature regenerator in a refrigerant supply path from a high-temperature regenerator to a condenser. And a double-effect absorption chiller in which an absorber is connected to a low temperature regenerator through an absorption liquid circulation path.

[Conventional technology]

Conventionally, as shown in FIG. 2, the refrigerant vapor and the absorbing liquid from the high temperature regenerator (31) are separated, and the refrigerant vapor and the absorbing liquid are separated into separate low temperature regenerators (32) and (33). The gas-liquid separator (35) for supplying to the (34), the absorption liquid in the case (37) is heated by the refrigerant vapor in the heating pipe (36), and the refrigerant liquid is passed through the flow path (38) and the refrigerant. The low temperature regenerator (34) and the absorber (42) which supply the vapor to the condenser (40) through the flow path (39) and the absorption liquid through the flow path (41) to the absorber (42) , They were formed separately from each other and provided at different positions.

Incidentally, (43) is an evaporator, (44) is a low temperature heat exchanger, and (45) is a high temperature heat exchanger.

[Problems to be Solved by the Invention]

However, since the gas-liquid separator (35), the low temperature regenerator (34) and the absorber (42) are formed separately, the entire equipment becomes large, and the heating pipe (36) is provided in the case (37). The low temperature regenerator (34) has a large and complicated structure due to the configuration provided with
There was room for further improvement.

The object of the present invention is to downsize the entire facility and downsize and simplify the low-temperature regenerator by rational configuration of the gas-liquid separator, the low-temperature regenerator and the absorber. The point is to prevent the functional deterioration of the vessel by simple means.

[Means for Solving the Problems]

A characteristic configuration of the present invention is that the gas-liquid separator is formed in a vertical cylindrical shape, and the low temperature regenerator is arranged around the vertical cylindrical gas-liquid separator, and the gas liquid separator and the low temperature regenerator are combined. A partition wall is formed on the heat transfer wall for heating the absorbing liquid in the low-temperature regenerator with the refrigerant vapor in the gas-liquid separator, and the absorber is arranged around the low-temperature regenerator to provide a low-temperature regenerator. This is due to the formation of a heat insulating void between the absorbers, and the function and effect thereof are as follows.

[Work]

By arranging the low temperature regenerator around the gas-liquid separator, and the absorber around the low temperature regenerator, respectively, concentrically,
The entire equipment can be sufficiently miniaturized as compared with the case where the gas-liquid separator, the low temperature regenerator and the absorber are separately arranged as in the above-mentioned conventional technique.

Further, by making the gas-liquid separator a vertical cylindrical shape and forming a partition wall between the gas-liquid separator and the low temperature regenerator on the heat transfer wall for heating the absorbing liquid by the refrigerant vapor, it is necessary in the above conventional technology. While the heating pipe of the low temperature regenerator which has been described above is omitted, the absorption liquid heating by the refrigerant vapor can be sufficiently realized, and the low temperature regenerator can be downsized and the structure can be simplified by omitting the heating pipe.

Since the low temperature regenerator is arranged around the vertical cylindrical gas-liquid separator, a low temperature regenerator with a small horizontal vertical cross-sectional area can be formed for the required volume while suppressing the equipment height. The absorption liquid in the low temperature regenerator can be raised to a sufficient height by the bubble pump action accompanying the generation of the refrigerant vapor from it, and the operation of the absorption refrigerator can be satisfactorily executed without the electric pump for pumping the absorption liquid.

On the other hand, when heat is applied from the low temperature regenerator that becomes high temperature to the low temperature regenerator around it, the heat loss of the low temperature regenerator reduces the refrigerant evaporation function, and the temperature rise of the absorber also causes the refrigerant absorption function. However, according to the present invention, since the heat insulating gap is formed between the low temperature regenerator and the absorber, the heat loss of the low temperature regenerator is sufficiently eliminated and a good refrigerant evaporation function is obtained. Can be exerted, and the temperature rise of the absorber can be sufficiently suppressed to exert a good refrigerant absorbing function. Further, the structure can be simplified and the cost can be reduced as compared with the case of using the heat insulating material.

〔The invention's effect〕

As a result, the area and height required for installation can be sufficiently reduced by downsizing the equipment, and the cost can be reduced by simplifying the structure of the low-temperature regenerator, and the functional deterioration of the low-temperature regenerator and the absorber can be prevented easily and inexpensively. It is now possible to provide a more excellent double-effect absorption refrigerator.

〔Example〕

 Next, FIG. 1 shows an embodiment.

Above the high temperature regenerator (1) that heats the absorbing liquid with the burner (B), a vertical liquid cylinder-shaped gas-liquid separator (2) is arranged, and the gas-liquid separator (2) is vertically surrounded. Type low temperature regenerator (3)
The vertical absorber (4) is arranged around the low temperature regenerator (3), and the evaporator (5) is located below and the condenser (6) is located above the absorber (4). ) Has been placed.

High temperature regenerator (1) in ascending flow path (7) of refrigerant vapor and absorbing liquid
Is connected to the gas-liquid separator (2), the lower part of the low-temperature regenerator (3) is connected to the gas-liquid separator (2) through the absorption liquid supply path (8), and the lower-temperature regenerator (3) is connected to the upper part. To the gas-liquid separator (9)
The absorbent spreading device (10) on the upper part of the absorber (4) is connected by the absorbent supply path (11), and the high temperature regenerator (10) is connected to the lower part of the absorber (4) by the absorption solution supply path (12) with a pump. 1) is connected.

That is, the absorption liquid is converted into a high temperature regenerator (1) → a gas-liquid separator (2).
→ Low temperature regenerator (3) → Absorber (4) → High temperature regenerator (1)
It is made to circulate in order.

By the absorption liquid from the low temperature regenerator (3) to the absorber (4),
Low temperature heat exchanger (1) that heats the absorption liquid from the absorber (4)
9) is provided, and the high temperature heat exchanger heats the absorption liquid from the low temperature heat exchanger (19) to the high temperature regenerator (1) by the absorption liquid from the gas-liquid separator (2) to the low temperature regenerator (3). (20) is provided.

A partition wall (13) for partitioning the gas-liquid separator (2) and the low-temperature regenerator (3) is provided for heating the absorption liquid in the low-temperature regenerator (3) with the refrigerant vapor in the gas-liquid separator (2). The heat transfer wall is formed so that the refrigerant liquid generated by the condensation on the inner surface of the partition wall (13) flows down to the refrigerant liquid receiving portion between the partition wall (13) and the inner cylinder (14).

The condenser (6) is connected to the refrigerant liquid receiving portion of the gas-liquid separator (2) through the refrigerant liquid supply path (15), and the condenser (6) is connected to the gas-liquid separator (9) of the low temperature regenerator (3). Are connected by a refrigerant vapor supply path (16), the refrigerant liquid sprinkler (17) of the evaporator (5) is connected to the lower part of the condenser (6) by a refrigerant liquid supply path (18), and the evaporator (5) is connected. And the absorber (4).

The cooling coil (21) in the absorber (4) is connected to the cooling water supply source (2
2), and the cooling coil (23) in the condenser (6) is connected to the cooling coil (21) in the absorber (4). The coil (24) to be cooled in the evaporator (5) and the object to be cooled (25) are connected by the circulation path (26) for the heat-carrying fluid.

That is, the refrigerant vapor generated from the absorbing liquid in the high temperature regenerator (1) is sent to the gas-liquid separator (2) and is condensed on the inner surface of the partition wall (13) by heat exchange with the low temperature regenerator (3), and the gas-liquid The refrigerant liquid is sent from the separator (2) to the condenser (6), and the refrigerant vapor generated from the absorbing liquid in the low temperature regenerator (3) is sent from the gas-liquid separator (9) to the condenser (6). I am doing it. Then, in the condenser (6), the refrigerant vapor is condensed by the action of the cooling coil (23), and the refrigerant liquid sent from the condenser (6) to the evaporator (5) is evaporated by the action of the cooled coil (24). Let
The refrigerant vapor sent from the evaporator (5) to the absorber (4) is absorbed by the absorbing liquid, and the heat generated by the absorption is taken out by the action of the cooling coil (21), thereby circulating the refrigerant.

As a result, the heat input from the cooling target (25) is transferred to the evaporator (5).
After being sent from the absorber to the absorber (4), it is given to the cooling water by the action of the cooling coil (21) and discharged to the outside.

Insulation gap (2) between the low temperature regenerator (3) and the absorber (4)
7) to form a lid (2
8), (29) closed, a small hole (30) for preventing internal pressure change is formed in the lower lid (29), and a low temperature regenerator (3) 40 The action of the heat insulating void (27) prevents heat from being applied to the absorber (4) having a low temperature of about ℃, and the refrigerant evaporation function of the low temperature regenerator (3) and the absorber (4).
The refrigerant absorption function of is maintained well.

[Another embodiment]

 Next, another embodiment will be described.

The evaporator (5) and the condenser (6) may be provided separately from the gas-liquid separator (2), the low temperature regenerator (3) and the absorber (4).

The cooling water supply source (22) can be appropriately selected from a cooling quart, a natural cold water supply source, a low temperature waste water supply source, and the like.

Any object such as a cooling space may be cooled.

The types of the refrigerant and the absorbing liquid may be appropriately selected from known ones.

To form the gas-liquid separator (2), low-temperature regenerator (3) and absorber (4) in a vertical cylindrical shape, the shape and dimensions may be set appropriately according to the refrigerating capacity and installation conditions. It only needs to be in a slender state.

Partition wall (13) between the gas-liquid separator (2) and the low temperature regenerator (3)
Is preferably a material having a high thermal conductivity, and a heat transfer area increasing means such as a heat transfer fin may be attached to one or both of the inner and outer surfaces.

The heating source of the high temperature regenerator (1) can be appropriately selected such as hot waste water or electric heat.

The heat insulating void (27) may be closed to be in a substantially vacuum state.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention. FIG. 2 is a conceptual diagram of a conventional example. (1) …… High temperature regenerator, (2) …… Gas-liquid separator, (3)
...... Low-temperature regenerator, (4) …… Absorber, (6) …… Condenser, (13) …… Partition wall, (27) …… Insulation void.

Claims (1)

[Claims] 1. A gas-liquid separator (2) and a low temperature regenerator (3) are provided in a refrigerant supply path from a high temperature regenerator (1) to a condenser (6), and the high temperature regenerator (1) and the gas liquid A double-effect absorption refrigerator in which an absorber (4) is connected to a separator (2) and a low temperature regenerator (3) by an absorption liquid circulation path, wherein the gas-liquid separator (2) is a vertical type. The low temperature regenerator (3) is formed in a cylindrical shape, and the low temperature regenerator (3) is arranged around the vertical cylindrical gas / liquid separator (2), and the low temperature regenerator (3) and the gas / liquid separator (2) are disposed. A partition wall (13) for partitioning is formed on a heat transfer wall for heating the absorbing liquid in the low temperature regenerator (3) with the refrigerant vapor in the gas-liquid separator (2), The double-effect absorption type in which the absorber (4) is arranged around the periphery of (3), and a heat insulating void (27) is formed between the low temperature regenerator (3) and the absorber (4). refrigerator.