Motor-operated valve and refrigeration cycle using the same
AssigneeFujikoki Corporation
InventorTakeshi Suganuma
Life of this patent
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Abstract
A motor-operated valve which can control the flow rate at a high accuracy during a normal flow, and can pass the fluid so as to suppress pressure loss as much as possible during a reverse flow, and a refrigeration cycle using the same are provided. It is configured such that during a normal flow, the fluid is made to flow only from between the main valve body 24 and the orifice 22 to perform flow rate control, and during a reverse flow, all or a majority of the fluid is made to flow to a bypass channel 70 without being passed through the orifice 22a to decrease pressure loss as much as possible. To be more specific, a check valve body 60 which closes the bypass channel 70 during a normal flow and opens it during a reverse flow is provided in the valve main body 20.
Claims19
A motor-operated valve comprising a main valve body, a valve main body which is provided with an orifice to be opened/closed by the main valve body, and an up-and-down movement driving mechanism comprising a rotor and a stator for adjusting a lift amount of the main valve body with respect to the orifice, wherein
- during a normal flow, the fluid is made to flow only from between the main valve body and the orifice to perform flow rate control, and during a reverse flow, all or a majority of the fluid is made to flow without being passed through the orifice to decrease pressure loss as much as possible.
Dependencies are inferred from the claim text.