An electromagnetic clutch active control contact type thermal switch device for low temperature system

Abstract

The invention discloses an electromagnetic clutch active control contact type thermal switch device for a low temperature system. The electromagnetic clutch active control contact type thermal switch device comprises a cold end connecting plate, a left side plate, a thermal bridge, an upper sliding rod, a lower sliding rod, a first electromagnet, a second electromagnet, electromagnetic pure iron, a support rod, a right side plate and a hot end connecting plate. Whether the thermal bridge is in contact with thermally conductive blocks of the cold and hot end connecting plates or not corresponds to the on / off state of the thermal switch. The electromagnetic clutch active control contact type thermal switch device of the invention has the technical advantages of freely controllable on-off, fast response, large switching ratio, wide controllable temperature range, simple structure, easy operation and the like, and can be widely applied in the technical fields of low temperature physics research, cryogenic temperature calibration, space refrigeration and so forth.

Description

technical field [0001] The invention relates to an electromagnetic clutch active control contact type thermal switch device for low temperature systems, in particular to a device that uses electromagnets to realize thermal circuit on and off working at low temperature, and can be widely used in low temperature refrigeration systems, low temperature Temperature calibration system and aerospace thermal control technology, etc. Background technique [0002] Just like the clutch of the power output of the car, in addition to the continuously adjustable cooling output in the low-temperature refrigeration system, on-off control of the cooling transmission is also required in many occasions, and this function is realized by a thermal switch. For example, a low-temperature system that needs to achieve temperature control in an ultra-wide temperature range is designed for a -250°C cryogenic temperature range, but it is also required to be able to provide cooling capacity at a tempera...

AI Technical Summary

Problems solved by technology

Although the air-gap thermal switch has achieved active control, its on-off ratio is significantly lower than that of the contact thermal switch, and the switch response time is long and slow; and activated carbon can only effectively absorb the working gas in a fixed temperature zone, and there are also applications limited scope problem

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