Refrigeration device for heat treatment furnace

Abstract

The invention discloses a refrigeration device for a heat treatment furnace. The refrigeration device comprises a cooling room and an electrical control system, wherein the cooling room is connected with a refrigeration unit; the refrigeration unit comprises a room body and a refrigeration component located in the room body; the refrigeration component comprises a two-stage compressor, a condenser, a throttle valve and an evaporator which are sequentially connected by a refrigeration tube to form a loop; an ammonia liquor separator is further connected between the condenser and the throttle valve; and the ammonia liquor separator is connected with the evaporator by the refrigeration tube. The refrigeration device disclosed by the invention has the advantages that: refrigeration equipment is independently arranged and used for performing a systematic cooling treatment on a bimetallic element, so that the bimetallic element is still in a stable state in a low-temperature place; the ammonia liquor separator is further arranged in the refrigeration component, and liquid-state ammonia can flow back to the evaporator, so that the utilization rate of the liquid-state ammonia is increased; and moreover, the refrigeration device adopts a two-stage compressor refrigeration form, is formed according to a principle of absorbing heat during evaporation by a low-boiling-point refrigerant, and has the advantages of being long in life, convenient to use, and the like.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a refrigeration device for a heat treatment furnace. Background technique [0002] Heat treatment furnaces are widely used in the heat treatment process of metal workpieces, and in the heat treatment of bimetallic components, because the bimetallic Low-voltage circuit breakers are widely used in components. The reliability of the overload protection characteristics of low-voltage circuit breakers is guaranteed by the reliability of bimetallic components. The reliability of bimetallic components depends on the strict implementation of the necessary process in the manufacturing and assembly process of components. , what is more important is to control the consistency and stability of the bimetallic element itself, because the bimetallic element made after reprocessing must have a large internal stress, and this internal stress is composed of thermal stress, mechanical stress and residual Th...

AI Technical Summary

Problems solved by technology

[0002] Heat treatment furnaces are widely used in the heat treatment process of metal workpieces, and in the heat treatment of bimetallic components, because the bimetallic Low-voltage circuit breakers are widely used in components. The reliability of the overload protection characteristics of low-voltage circuit breakers is guaranteed by the reliability of bimetallic components. The reliability of bimetallic components depends on the strict implementation of the necessary process in the manufacturing and assembly process of components. , what is more important is to control the consistency and stability of the bimetallic element itself, because the bimetallic element made after reprocessing must have a large internal stress, and this internal stress is composed of thermal stress, mechanical stress and residual The stress is composed of three parts. In order to eliminate these internal stresses, the bimetal element is heat treated. The existing low-voltage circuit breaker has been widely used in low temperature places, and the stability of the bimetal element in low temperature places has a certain test. , to sum up, in the existing heat treatment furnace, no specific refrigeration device is installed, and the bimetallic element has not been cooled by the system, which leads to the instability of the bimetallic element when used in a low temperature place, thus causing the entire bimetallic element poor reliability

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