JPS6119404Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an absorption refrigerator.

Figure 1 is a configuration diagram of a conventional dual-effect absorption refrigerator, where 1 is a high-pressure regenerator, 2 is a low-pressure regenerator, 3 is a condenser, 4 is an evaporator, 5 is an absorber, and 6 is a high-temperature heat exchanger. The refrigerant is evaporated and separated in the high-pressure regenerator 1, and the refrigerant is evaporated to a high concentration. The stale solution becomes a saturated solution at the outlet, and after exchanging heat with the low-temperature solution sent from the absorber 5 in the high-temperature heat exchanger 6, it is transferred to the low-pressure regenerator 2.
to go into. At this time, refrigerant vapor is generated due to isenthalpic changes due to pressure differences. In addition, in the low-pressure regenerator 2, it is heated by the refrigerant vapor from the high-pressure regenerator 1, new low-pressure refrigerant vapor is generated, and refrigerant vapor from the high-pressure regenerator having an amount of heat equal to the generated refrigerant vapor is condensed. Furthermore, when this condensed liquid refrigerant also enters the condenser, low-pressure refrigerant vapor is generated due to a pressure difference. When this is expressed in the water pressure-enthalpy diagram shown in Figure 2, A shows the state of refrigerant vapor generated in the high-pressure regenerator 1, and B shows the state of this refrigerant vapor condensed in the low-pressure regenerator 2. show. This heat evaporates the refrigerant in the solution in the low-pressure regenerator 2, resulting in the state shown in (c). On the other hand, the refrigerant vapor generated when the solution enters the low-pressure regenerator 2 is in the state shown in (D), and these refrigerant vapors are condensed in the condenser 3 to become the state in E. Further, the liquid refrigerant condensed in the low-pressure regenerator 2 also enters the condenser 3, resulting in the state shown in E.

In this way, in a conventional dual-effect absorption refrigerator, the refrigerant vapor generated in the high-pressure regenerator 1 is circulated to the low-pressure regenerator 2, where it exchanges heat with the solution, generates low-pressure refrigerant vapor, and condenses itself. However, because it requires a large heat exchanger called a low-pressure regenerator, the machine itself has to be large and expensive.

The present invention was proposed in view of the above points, and its purpose is to provide a compact and inexpensive absorption chiller that has the same performance as a conventional dual-effect absorption chiller. .

The present invention provides a flush chamber for flushing the solution from the high-pressure regenerator, configures a solution circuit to supply the solution to the absorber through the flash chamber, and directs the refrigerant vapor generated in the high-pressure regenerator to the condenser. The refrigerant circuit is configured so as to lead to the refrigerant, and the condenser and the flash chamber are connected in communication with each other, and the refrigerant vapor generated in the high-pressure regenerator directly enters the condenser. , during this period, there is an isenthalpic change, and on the other hand, the refrigerant vapor generated in the flash chamber is saturated vapor, and these refrigerant vapors enter the condenser and are condensed, but there is no energy loss during this time, unlike the conventional method described above. It will demonstrate the same capacity as a dual-effect absorption chiller. Therefore, according to the present invention, there is no need for a large-sized low-pressure regenerator as in conventional ones, and a small, compact, and inexpensive absorption refrigerator can be obtained.

Hereinafter, the present invention will be explained based on examples.

In FIG. 3, 1 is a high-pressure regenerator, 3 is a condenser, 4 is an evaporator, 5 is an absorber, 6 is a high-temperature heat exchanger 6, and 7 is a low-temperature heat exchanger. Instead, a flashing chamber 8 is provided, and the solution from the high-pressure regenerator 1 is introduced into the flashing chamber 8 through a high-temperature heat exchanger 6 to be flushed, and the solution in the flashing chamber 8 is introduced through a low-temperature heat exchanger 7. A solution circuit is configured to supply the solution to the absorber 5. In addition, the refrigerant vapor generated in the high-pressure regenerator 1 is guided directly to the condenser 3, and the flash chamber 8
The flash chamber 8 and the condenser 3 are connected to each other so that the refrigerant vapor generated in the refrigerant vapor is guided to the condenser 3, so that the pressures thereof are equalized.

As mentioned above, by eliminating the low-pressure regenerator and providing the flash chamber 8, it is intended to exhibit the same performance as the conventional system equipped with a low-pressure regenerator.

In other words, the refrigerant vapor generated in the high-pressure regenerator 1 is in state A on the diagram in FIG. This results in a state of Ha. On the other hand, the solution is flashed from the high-pressure regenerator 1 through the high-temperature heat exchanger 6 into the flash chamber 8. At this time, the refrigerant vapor generated is in state 2 on the diagram in FIG. It also enters the condenser 3 and is condensed, resulting in the state shown in E. There is no energy loss during this time, and the same ability as the conventional one shown in FIG. 1 can be obtained.

Therefore, there is no need for a large-sized low-pressure regenerator, and only a flash chamber is required in its place.
A small, compact, and inexpensive absorption refrigerator can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional system, FIG. 2 is a water pressure-enthalpy diagram, and FIG. 3 is a block diagram showing an embodiment of the present invention. 1... High pressure regenerator, 3... Condenser, 4... Evaporator, 5... Absorber, 6... High temperature heat exchanger, 7...
Low temperature heat exchanger, 8...flash room.

Claims (1)

[Scope of utility model registration request] A flushing chamber is provided to flush the solution from the high-pressure regenerator, and a solution circuit is configured to supply the solution to the absorber through the flashing chamber. An absorption refrigerating machine comprising a circuit in which a condenser and a flash chamber are connected to each other.