Motorized valve and refrigeration cycle system

Abstract

To provide a motorized valve with good operability and a refrigeration cycle system using said motorized valve. A motorized valve of a type that uses threaded coupling of a male threaded member and afemale threaded member to convert a rotational motion of a rotor into a linear motion, and causes a valve body that is housed within a valve main body to move in an axial direction with the guidance avalve body guiding member on the basis of this linear motion, while also canceling out a force that is due to a pressure difference between a plurality of interior spaces when the valve is in an openstate, said motorized valve comprising a valve seat on which the valve body is seated, and a plurality of communication passages by which the interior spaces are in communication with one another, wherein the effective cross-sectional area of a communication passage that is located in a location far from the valve seat is formed so as not to be smaller than the effective cross-sectional area of acommunication passage that is located in a location close to the valve seat.

Description

technical field [0001] The present invention relates to an electric valve used in a refrigeration cycle and a refrigeration cycle system using the electric valve. Background technique [0002] Conventionally, flow control valves used in large-scale combined air conditioners and refrigerators are known (for example, refer to Patent Document 1). In this flow control valve, from the background of the rationalization of control equipment such as the integration of a plurality of electric valves used for flow control into one, etc., it is desired to exhibit good operability even when a large diameter and a high pressure difference are generated. performance, but for flow control with a larger diameter, compared with the thrust of the threaded part due to the torque of the magnet, the load on the spool due to the pressure difference is greater, so in order to make the spool work, it is necessary Greater driving force. [0003] Therefore, in order to improve the operability of su...

AI Technical Summary

Problems solved by technology

In this flow control valve, from the background of the rationalization of control equipment such as the integration of a plurality of electric valves used for flow control into one, etc., it is desired to exhibit good operability even when a large diameter and a high pressure difference are generated. performance, but for flow control with a larger diameter, compared with the thrust of the threaded part due to the torque of the magnet, the load on the spool due to the pressure difference is greater, so in order to make the spool work, it is necessary greater driving force

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