A refrigerant valve device may include a base provided with an inlet port, an outlet port and a valve seat face; a cover to section a valve chamber between the valve seat face and the cover; a valve body turnably disposed at a position shifted to a side of one port inside the valve chamber, the valv
A refrigerant valve device may include a base provided with an inlet port, an outlet port and a valve seat face; a cover to section a valve chamber between the valve seat face and the cover; a valve body turnably disposed at a position shifted to a side of one port inside the valve chamber, the valve body being provided with a contact face sliding on the valve seat face; and a valve body drive mechanism to turn the valve body. The valve body drive mechanism may turn the valve body and thereby a refrigerant flowing passage from the inlet port to the outlet port through the valve chamber is switched at least to a first refrigerant flowing passage and to a second refrigerant flowing passage. The refrigerant flowing amount in the first refrigerant flowing passage may be smaller than a refrigerant flowing amount in the second refrigerant flowing passage.
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1. A refrigerant valve device comprising: a base which is provided with a refrigerant inlet port, a refrigerant outlet port and a valve seat face on which the refrigerant outlet port is opened;a cover structured to section a valve chamber communicating with the refrigerant inlet port and the refrige
1. A refrigerant valve device comprising: a base which is provided with a refrigerant inlet port, a refrigerant outlet port and a valve seat face on which the refrigerant outlet port is opened;a cover structured to section a valve chamber communicating with the refrigerant inlet port and the refrigerant outlet port between the base and the cover;a valve body which is turnably disposed at a position as a turning center shifted to a side of the refrigerant outlet port in an inside of the valve chamber, the valve body being provided with a contact face sliding on the valve seat face; anda valve body drive mechanism structured to turn the valve body around an axial line which passes the turning center and is perpendicular to the valve seat face;wherein the valve body is provided with an orifice which penetrates through the valve body and whose one end is opened on a side of the contact face, the orifice structuring a first flowing passage from the refrigerant inlet port to the refrigerant outlet port, and a cut-out portion which is formed on the side of the contact face for directly communicating the valve chamber with the refrigerant outlet port, the cut-out portion structuring a second flowing passage;wherein the valve body drive mechanism is structured to turn the valve body so that a refrigerant flowing passage from the refrigerant inlet port to the refrigerant outlet port through the valve chamber is switched at least to the first flowing passage through the orifice or to the second flowing passage through the cut-out portion; andwherein a refrigerant flowing amount in the first flowing passage is smaller than a refrigerant flowing amount in the second flowing passage. 2. The refrigerant valve device according to claim 1, wherein the refrigerant inlet port is always set in a fully opened state. 3. The refrigerant valve device according to claim 1, wherein the orifice is provided at plurality of positions of the valve body. 4. The refrigerant valve device according to claim 1, wherein the cut-out portion divides the contact face into a plurality of portions in a circumferential direction on a moving trace of the one port on the valve body when the valve body is turned, anda width dimension in the circumferential direction of the contact face on a turning trace is narrower than an opening width in the circumferential direction of the one port. 5. The refrigerant valve device according to claim 4, wherein the contact face is provided with a recessed part,one end of the orifice is opened at a bottom part of the recessed part, anda width dimension in the circumferential direction on the turning trace of the contact face between the recessed part and the cut-out portion in the circumferential direction is narrower than the opening width in the circumferential direction of the one port. 6. The refrigerant valve device according to claim 1, wherein the contact face is provided with a recessed part and one end of the orifice is opened at a bottom part of the recessed part. 7. The refrigerant valve device according to claim 1, wherein the drive mechanism comprises a drive source and a gear train structured to transmit a drive force of the drive source to the valve body, anda final gear of the gear train is overlapped with the valve body on an opposite side to a side of the contact face of the valve body in an extended direction of the axial line and is connected with the valve body. 8. The refrigerant valve device according to claim 7, wherein a connected portion of the final gear with the valve body is provided at plural positions. 9. The refrigerant valve device according to claim 8, wherein the connected portions of the final gear with the valve body are provided at unequal intervals in the circumferential direction. 10. The refrigerant valve device according to claim 7, wherein the other end of the orifice is opened at a position of the valve body overlapping with the final gear, anda communicating path for communicating the other end of the orifice with the valve chamber is provided on at least one of a face of the final gear overlapping with the valve body and a face of the valve body overlapping with the final gear. 11. The refrigerant valve device according to claim 10, wherein the communicating path is a cut-out portion which is provided on the face of the valve body overlapping with the final gear. 12. The refrigerant valve device according to claim 7, wherein the other end of the orifice is opened at a position of the valve body overlapping with the final gear, andthe final gear is provided with a communicating path for communicating the other end of the orifice with the valve chamber. 13. The refrigerant valve device according to claim 7, wherein the other end of the orifice is opened at a position of the valve body overlapping with the final gear and is communicated with the valve chamber through a gap space formed between the valve body and the final gear. 14. The refrigerant valve device according to claim 7, wherein the other end of the orifice is opened at a position of the valve body that is not overlapped with the final gear so as to be in an opened state to the valve chamber. 15. The refrigerant valve device according to claim 1, wherein the valve body is provided with a plurality of cut-out portions structured to connect the one port with the valve chamber. 16. The refrigerant valve device according to claim 15, wherein the cut-out portions divide the contact face into a plurality of portions in a circumferential direction on a moving trace of the one port on the valve body when the valve body is turned, anda width dimension in the circumferential direction of the contact face on a turning trace is narrower than an opening width in the circumferential direction of the one port. 17. The refrigerant valve device according to claim 16, wherein the drive mechanism comprises a drive source and a gear train structured to transmit a drive force of the drive source to the valve body, anda final gear of the gear train is overlapped with the valve body on an opposite side to a side of the contact face of the valve body in an extended direction of the axial line and is connected with the valve body. 18. The refrigerant valve device according to claim 17, wherein a connected portion of the final gear with the valve body is provided at plural positions. 19. The refrigerant valve device according to claim 1, wherein the drive mechanism comprises a drive source and a gear train which transmits a drive force of the drive source to the valve body, anda final gear of the gear train is overlapped with the valve body on an opposite side to a side of the contact face of the valve body in an extended direction of the axial line and is connected with the valve body. 20. The refrigerant valve device according to claim 19, wherein a connected portion of the final gear with the valve body is provided at plural positions. 21. The refrigerant valve device according to claim 1, wherein at least one of the contact face and the valve seat face is polished.
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이 특허에 인용된 특허 (11)
Jeong, Sang Kwon; Jeong, Je Heon; Hwang, Gyu Wan, Buffered rotary valve.
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