absorption chiller

Abstract

PROBLEM TO BE SOLVED: To provide an absorption type refrigerator capable of continuing an operation without going through a stop operation even when operation modes are switched.SOLUTION: An absorption type water chiller / heater 100, which is configured so as to be capable of a single effect operation for heating an absorbent with hot water supplied to an exhaust heat regenerator 9 as a heat source and a single / double effect operation for heating the absorbent with a gas burner 4 which a high temperature regenerator 5 includes as a heat source, includes a mode switching switch 51 for switching an operation mode of each operation. A control device 50 controls in such a manner that, when the operation mode is switched from the single / double effect operation to the single effect operation by the mode switching switch 51, the gas burner 4 is stopped, and when a temperature of the absorbent inside the high temperature regenerator 5 drops to a predetermined temperature at which the absorbent is sufficiently diluted or lower, the operation is shifted to the single effect operation.

Description

technical field [0001] The present invention relates to an absorption refrigerating machine provided with a waste heat regenerator using hot water or the like as a heat source. Background technique [0002] In general, there is known an absorption refrigerating machine that includes a waste heat regenerator, a high-temperature regenerator, a low-temperature regenerator, an evaporator, a condenser, and an absorber. The circulation path of the refrigerant and the circulation path of the refrigerant (for example, refer to Patent Document 1). In such an absorption refrigerator, it is configured so that the absorption can be performed by using the hot water supplied to the waste heat regenerator as a heat source according to the load of a heat load such as an air conditioner connected to the evaporator through a brine pipe. The single-effect operation for heating and regenerating the liquid, and the single-effect or double-effect operation for heating and regenerating the absorb...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned problems, the absorption refrigerating machine of the present invention includes a waste heat regenerator, a high-temperature regenerator, a low-temperature regenerator, an evaporator, a condenser, and an absorber, and the waste heat regenerator, the high-temperature regenerator, and the The low-temperature regenerator, the evaporator, the condenser, and the absorber are connected with pipes to respectively form a circulation path of an absorption liquid and a circulation path of a refrigerant, and the absorption refrigeration mechanism becomes capable of supplying heat to the waste heat regenerator. The single-effect operation in which the supplied hot water is used as a heat source to heat the absorption liquid, and the single-effect operation or double-effect operation in which the heating mechanism of the high-temperature regenerator is used as a heat source to heat the absorption liquid, the absorption refrigerating machine The absorption refrigerating machine is characterized in that the absorption refrigerating machine is provided with a switching mechanism for switching the operation mode of each operation, and is provided with an operation switching control mechanism, and the operation switching control mechanism changes the operation mode from the single-effect operation or the all-effect operation by using the switching mechanism. When the double-effect operation is switched to the single-effect operation, the heating mechanism is stopped, and the temperature of the absorption liquid in the high-temperature regenerator is lowered to a predetermined temperature or lower at which the absorption liquid is sufficiently diluted. case, make the operation mode change to the single-effect operation

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