Electrically operated valve, and cooling ststem using electrically operated valve

Abstract

To provide an electrically operated valve which is capable of accurately controlling temperature, does not require a large installation space for an expansion valve, and consumes reduced electric power. This electrically operated valve controls a throttle flow rate by rotating a single valve body about an axis, the single valve body being disposed facing a valve seat surface. The valve seat surface has formed therein a first groove and a second groove, which extend in a circular arc shape in the same direction as the rotational direction of the valve body and having a gradually changing width.A main valve section is disposed on the valve seat surface side of the valve body, the main valve section providing communication between a first inlet port and a first outlet port through the firstgroove, the first outlet port being in communication with the first groove. A communication groove is formed in the seal surface of the main valve section, the communication groove extending in a circular arc shape in the same direction as the rotational direction of the valve body and providing communication between a second inlet port and a second outlet port which is in communication with the second groove.

Description

technical field [0001] The present invention relates to an electric valve used as a flow control valve of a freezer or a refrigerator, and a cooling system using the electric valve. Background technique [0002] Today, in cooling systems such as household refrigerators, such as Figure 17 As shown, there is known a cooling system that uses a three-way valve (3-way valve) to switch the refrigerant supplied to the refrigerator (R.Evap) and the freezer (F.Evap). system. According to this cooling system, temperature control can be performed by cooling the refrigerator compartment and the freezer compartment alternately. [0003] However, in this cooling system, the refrigerant supplied to the cooler (R. Evap) for the refrigerator compartment and the cooler (F. Evap) for the freezer compartment is expanded in the capillary tube (C. Tube). In this way, in the case of using a capillary tube (C.Tube), the throttling amount of the refrigerant cannot be freely adjusted like an elect...

AI Technical Summary

Problems solved by technology

In this way, in the case of using a capillary tube (C.Tube), the throttling amount of the refrigerant cannot be freely adjusted like an electronic expansion valve, so it is difficult to perform fine temperature control, it is difficult to quickly cool the room, or it is difficult to stabilize the temperature. Energy saving, etc.

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