Electronic throttling device for refrigeration system

Abstract

An electronic throttling device for a refrigeration system, comprising: a controller, a signal transmitter, a valve stem, a rotor, a coil, a position sensor and a valve body, wherein: the valve stem is arranged in the valve body, the rotor is arranged on the valve body, and the coil Covered outside the valve body, one end of the position sensor is connected with the upper end of the valve body, and the other end is arranged on the top of the valve stem, the controller is connected with the coil, and the signal transmitter is connected with the controller and the position sensor. Position sensors are wire or sliding potentiometers. The bottom of the valve body is provided with an inlet pipe and an outlet pipe, wherein: the outlet pipe is arranged at the bottom of the valve body and is connected with the valve stem, and the inlet pipe is arranged on the side of the valve body. The invention is equipped with a position sensor between the top of the valve stem and the upper end of the valve body, which can accurately measure the linear displacement of the valve stem, thereby obtaining the valve opening data, and adopts an alloy metal structure, which has low cost, light weight, compact structure and position feedback Accurate and highly reliable, it can be produced as a whole by flame brazing technology, and is suitable for mass and modular production.

Description

technical field [0001] The invention relates to a technology in the field of fluid control components, in particular to an electronic throttling device for a refrigeration system. Background technique [0002] In the existing air-conditioning system, a throttling short pipe or a thermal expansion valve is usually used as a throttling device; however, the thermal expansion valve cannot be actively controlled and cannot meet the requirements of high-efficiency new refrigeration systems (such as high-efficiency variable frequency room air conditioners, new energy vehicle heat pump systems. etc.) needs. [0003] In the working process of the currently used electronic throttling device, although the stepping motor used for driving can realize active control, it does not have the function of position opening feedback. Factors such as interference lead to loss of step, which cannot meet the requirements of use, and will greatly reduce the service life of the stepper motor. SUMMA...

AI Technical Summary

Problems solved by technology

[0002] In existing air-conditioning systems, short throttle tubes or thermal expansion valves are usually used as throttling devices; however, thermal expansion valves cannot be actively controlled and cannot meet the requirements of high-efficiency new refrigeration systems (such as high-efficiency inverter room air conditioners, new energy vehicle heat pump systems, etc.) etc.) needs

[0003] In the working process of the currently used electronic throttling device, although the stepper motor used for driving can realize active control, it does not have the position feedback function. Interference and other factors lead to out of step, unable to meet the use requirements, and will greatly reduce the service life of the stepper motor

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