JPS6290993U - - Google Patents

Description

[Brief explanation of drawings]

1 to 13 show an embodiment of the vane type compressor of the present invention, FIG. 1 is a cutaway side view of the vane type compressor, FIG. 2 is a sectional view taken along line - in FIG. 1, Figure 3 is a cross-sectional view taken along line - in Figure 1, Figure 4 is a cross-sectional view taken along line - in Figure 1, Figure 5 is a cross-sectional view taken along line - in Figure 1, and Figure 6 is a cross-sectional view taken along line - in Figure 1. 4 is a cross-sectional view taken along the line -, FIG. 7 is an exploded perspective view of the main parts, FIG. 8 is a plan view of the control member, and FIG. 9 is a cross-sectional view of the control member.
10 is a front view of the control member, FIG. 11 is a plan view of the sealing member,
Figure 2 is the same side view, Figure 13 is the same side view as Figure 11.
14 is a sectional view showing the second embodiment of the sealing member, FIG. 15 is a sectional view showing its operation, and FIG. 16 is a sectional view showing the third embodiment of the sealing member. FIG. 17 is a sectional view showing its effect, and FIG. 18 is a sectional view showing a fourth embodiment of the sealing member. 7...Cam ring, 8...Front side block, 9, 9a...Rear side block, 10...
...Rotor, 13...Void chamber, 14...Vane groove,
15 ₁ to 15 ₄ ... Vane, 16... Suction port, 17... Suction chamber (low pressure side chamber), 19... Discharge chamber (high pressure side chamber), 23... Bypass port, 24...
... control member, 26 ... pressure receiving section, 27 ... pressure operation chamber, 27 ₁ ... first chamber, 27 ₂ ... second chamber,
30, 50, 60, 70...Seal member, 33...
...opening/closing valve mechanism, 40...groove.

Claims (1)

[Scope of utility model registration request] A cam ring with both sides closed by side blocks, a rotor rotatably disposed within the cam ring, and a vane slidably fitted in a vane groove of the rotor, the side block, the cam ring, In a vane compressor that compresses fluid by changing the volume of a cavity defined by a rotor and vanes, a bypass provided in one of the two side blocks having a suction port is provided. a pressure working chamber provided in the side block having the suction port and communicating with the low pressure chamber side and the high pressure chamber side, and a first pressure working chamber within the pressure working chamber communicating with the low pressure chamber side. a control member for controlling an opening angle of the bypass port; An integrally molded sealing member that is attached and seals between the first chamber and the second chamber and between the low pressure chamber side and the vane back pressure side, and communicates the second chamber and the low pressure chamber side. a communication path; and an opening/closing device disposed in the communication path that closes the communication path when the low pressure chamber side pressure is above a predetermined value and opens the communication path when the low pressure chamber side pressure is below a predetermined value. a valve mechanism;
The control member rotates in accordance with the differential pressure between the first chamber and the second chamber to control the opening angle of the bypass port, thereby controlling the compression start timing and variably controlling the discharge volume. A vane type compressor characterized by: