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(11) | EP 2 924 292 A2 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | ROTARY COMPRESSOR |
(57) A rotary compressor includes: a cylinder main body (11) that forms a cylinder chamber
(10); a rotor (14) fitted onto an eccentric part (9a) of a rotating shaft (9), orbits
in the cylinder chamber (10) in accordance with rotation of the rotating shaft, and
whose outer circumferential surface (14a) is brought into sliding contact with an
inner circumferential surface; and a blade (17) whose front end portion (17a) is brought
into contact with the outer circumferential surface (14a) of the rotor and that slides
in a blade groove (15) provided in the cylinder main body in accordance with orbiting
of the rotor. The blade (17) has a hollow portion (171) therein that allows the blade
to be bent in a thickness direction thereof, and the hollow portion is open to a rear
end portion (17b) and both side portions of the blade.
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{Technical Field}
{Background Art}
{Citation List}
{Patent Literature}
{PTL 1} Japanese Unexamined Patent Application, Publication No. S63-189683
{PTL 2} Japanese Unexamined Patent Application, Publication No. 2011-21597
{Summary of Invention}
{Technical Problem}
{Solution to Problem}
{Advantageous Effects of Invention}
{Brief Description of Drawings}
{Fig. 1} Fig. 1 is a longitudinal sectional view showing an example rotary compressor to which the present invention can be applied.
{Fig. 2} Fig. 2 is a transverse sectional view showing a compression mechanism portion of the rotary compressor, along the line II-II of Fig. 1.
{Fig. 3} Fig. 3 is a view schematically showing the behavior of a blade during compression operation of the rotary compressor.
{Fig. 4} Fig. 4 is a plan view showing the vicinity of a blade according to a first embodiment of the present invention.
{Fig. 5} Fig. 5 is a plan view showing a function of the blade shown in Fig. 4.
{Fig. 6} Fig. 6 is a plan view showing the vicinity of a blade according to a second embodiment of the present invention.
{Fig. 7} Fig. 7 is a plan view showing the vicinity of a blade according to a third embodiment of the present invention.
{Fig. 8} Fig. 8 is a plan view showing a blade and a blade groove according to a fourth embodiment of the present invention.
{Description of Embodiments}
[First Embodiment]
[Second Embodiment]
[Third Embodiment]
[Fourth Embodiment]
{Reference Signs List}
a cylinder main body (11) that forms a cylinder chamber (10) ;
a rotor (14) that is fitted onto an eccentric part (9a) of a rotating shaft (9), that orbits in the cylinder chamber (10) in accordance with rotation of the rotating shaft (9), and whose outer circumferential surface (14a) is brought into sliding contact with an inner circumferential surface (10a) of the cylinder chamber (10); and
a blade (17) in which a front end portion (17a) is brought into contact with the outer circumferential surface of the rotor (14) to partition the inside of the cylinder chamber (10) into a suction side (18) and a compression side (19), the blade being configured to slide in a groove (15) provided in the cylinder main body (11) so as to be extended from and retracted into the groove (15) in accordance with orbiting of the rotor (14),
wherein the blade (17) has a hollow portion (171; 172; 173) therein that allows the blade (17) to be bent in a thickness direction thereof; and
the hollow portion (171; 172; 173) is open to the outside of the blade at a rear end portion and both side portions of the blade.
REFERENCES CITED IN THE DESCRIPTION
Patent documents cited in the description