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    • 5. 发明授权
    • Four-way change-over valve for air conditioner and service valve
therewith
    • 四通换向阀用于空调和维修阀
    • US5787929A
    • 1998-08-04
    • US465821
    • 1995-06-06
    • Toshinori Iwata
    • Toshinori Iwata
    • F16K3/08F16K11/052F16K11/074F16K11/076F16K31/04F25B41/04F25B13/00
    • F16K11/052F16K11/074F16K11/0743F16K11/076F16K3/08F16K31/041F25B41/046Y10T137/86638Y10T137/86839Y10T137/86863Y10T137/88062
    • A four-way change-over valve for an air conditioner has first to fourth piping holes sequentially arranged on a concentric circle at a predetermined pitch in a planar portion of a valve seat formed in a thick disk shape as one portion of a valve case. The change-over valve also has a rotary valve rotatably arranged on an upper face of this valve seat and having at least one communicating groove for independently connecting two adjacent piping holes of the four piping holes to each other. Cooling and heating operations of the air conditioner are switched by rotating the rotary valve. A service valve with a four-way change-over valve for an air conditioner is characterized in that both service valves on liquid and gas sides of a refrigerant circuit are integrated with each other and are further integrated with the four-way change-over valve as one valve unit with one valve seat as a common valve seat. In accordance with such valve structures, the four-way change-over valve has a simplified structure and is made compact. Further, the service valve is also made compact and operability of the service valve is improved.
    • 一种用于空调的四通换向阀,在作为阀壳的一部分形成为厚盘形的阀座的平面部分中以预定间距顺序地布置在同心圆上的第一至第四配管孔。 转换阀还具有可旋转地布置在该阀座的上表面上的旋转阀,并且具有至少一个连通槽,用于将四个配管孔的两个相邻管道孔彼此连接。 通过旋转旋转阀来切换空调的制冷和制热操作。 具有用于空调的四通换向阀的维修阀的特征在于,制冷剂回路的液侧和气侧的两个维修阀彼此集成,并与四通换向阀 作为具有一个阀座作为普通阀座的一个阀单元。 根据这种阀结构,四通切换阀具有简化的结构并且被制成小型化。 此外,维修阀也变得紧凑,并且提高了维修阀的可操作性。
    • 7. 发明授权
    • Four-way change-over valve for air-conditioner and service valve
therewith
    • 空调和维修阀四通换向阀
    • US5732739A
    • 1998-03-31
    • US470264
    • 1995-06-06
    • Manabu Ota
    • Manabu Ota
    • F16K3/08F16K11/052F16K11/074F16K11/076F16K31/04F25B41/04F16K11/07
    • F16K11/052F16K11/074F16K11/0743F16K11/076F16K3/08F16K31/041F25B41/046Y10T137/86638Y10T137/86839Y10T137/86863Y10T137/88062
    • A four-way change-over valve for an air conditioner has first to fourth piping holes sequentially arranged on a concentric circle at a predetermined pitch in a planar portion of a valve seat formed in a thick disk shape as one portion of a valve case. The change-over valve also has a rotary valve rotatably arranged on an upper face of this valve seat and having at least one communicating groove for independently connecting two adjacent piping holes of the four piping holes to each other. Cooling and heating operations of the air conditioner are switched by rotating the rotary valve. A service valve with a four-way change-over valve for an air conditioner is characterized in that both service valves on liquid and gas sides of a refrigerant circuit are integrated with each other and are further integrated with the four-way change-over valve as one valve unit with one valve seat as a common valve seat. In accordance with such valve structures, the four-way change-over valve has a simplified structure and is made compact.
    • 一种用于空调的四通换向阀,在作为阀壳的一部分形成为厚盘形的阀座的平面部分中以预定间距顺序地布置在同心圆上的第一至第四配管孔。 转换阀还具有可旋转地布置在该阀座的上表面上的旋转阀,并且具有至少一个连通槽,用于将四个配管孔的两个相邻管道孔彼此连接。 通过旋转旋转阀来切换空调的制冷和制热操作。 具有用于空调的四通换向阀的维修阀的特征在于,制冷剂回路的液侧和气侧的两个维修阀彼此集成,并与四通换向阀 作为具有一个阀座作为普通阀座的一个阀单元。 根据这种阀结构,四通切换阀具有简化的结构并且被制成小型化。