| Patent application number | Description | Published |
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| 20100221134 | SCROLL FLUID MACHINE - In a scroll air compressor as a scroll fluid machine capable of being downsized with an increased cooling effect, cooling air entering through a fixed inlet of a fixed cooling passage provided at the rear of a fixed scroll, and an orbiting inlet of an orbiting cooling passage provided at the rear of an orbiting scroll, is allowed to flow out of an fixed outlet and an orbiting outlet, respectively. Thereafter, the cooling air is guided to an outer periphery of the other end of the casing through a side duct and a guide duct, and then sucked into an inner peripheral side of a centrifugal fan to be discharged outwardly from an exhaust port provided in a fan cover. | 09-02-2010 |
| 20120189480 | Scroll Fluid Machine - A scroll fluid machine includes: a casing; a fixed scroll having an end plate, a spiral wrap part provided on the end plate, and a flange provided outside the wrap part and fitted to the casing; and an orbiting scroll having an end plate and a spiral wrap part provided on the end plate with a plurality of compression chambers formed in a space up to the wrap part of the fixed scroll, which is provided to perform an orbiting motion, wherein the flange is provided with a deformation absorbing part which absorbs deformation due to thermal expansion of the end plate. The scroll fluid machine is improved in reliability while the compression efficiency is maintained by preventing the fixed scroll and the orbiting scroll from coming into contact with each other without increasing a clearance between the wrap parts of both scrolls. | 07-26-2012 |
| 20140294641 | Scroll Fluid Machine - In a scroll air compressor as a scroll fluid machine capable of being downsized with an increased cooling effect, cooling air entering through a fixed inlet of a fixed cooling passage provided at the rear of a fixed scroll, and an orbiting inlet of an orbiting cooling passage provided at the rear of an orbiting scroll, is allowed to flow out of an fixed outlet and an orbiting outlet, respectively. Thereafter, the cooling air is guided to an outer periphery of the other end of the casing through a side duct and a guide duct, and then sucked into an inner peripheral side of a centrifugal fan to be discharged outwardly from an exhaust port provided in a fan cover. | 10-02-2014 |
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| 20090087331 | Scroll type fluid machine - This invention provides a scroll type fluid machine which can simultaneously realize the stabilization of the behavior in the rotational direction of an orbiting scroll and the reduction in the manufacturing cost by the ease of holding a grease. In the scroll type fluid machine, three pairs of rotation prevention mechanisms are provided between a casing and an orbiting scroll. The rotation prevention mechanism is constituted of first and second ball coupling mechanisms having a function different from each other. The first ball coupling mechanism supports the thrust load of the orbiting scroll. Meanwhile, the second ball coupling mechanism supports the rotation force of the orbiting scroll. | 04-02-2009 |
| 20100028185 | Scroll Fluid Machine - A scroll fluid machine comprises a fixed-side member including a cylindrical casing and a fixed scroll fixed to the casing, and an orbiting scroll and a plurality of ball coupling devices provided between the fixed-side member and the orbiting scroll to prevent self-rotation of the orbiting scroll on its axis and receive a thrust load between the fixed-side member and the orbiting scroll. Each of the ball coupling devices comprises a first ball coupling mechanism for supporting the thrust load generated between the fixed-side member and the orbiting scroll and a second ball coupling mechanism disposed with a space from the first ball coupling mechanism to prevent the self-rotation of the orbiting scroll. | 02-04-2010 |
| 20100166589 | SCROLL TYPE FLUID MACHINE - The invention reduces a centrifugal force of a orbiting scroll which acts on an auxiliary crank mechanism. A crank pin which is eccentric from a main shaft portion is formed in a drive shaft, and a main balance weight is provided in a base end side of the crank pin. The main shaft portion of the drive shaft is rotatably supported by using a main bearing, and the crank pin is attached to a orbiting bearing which is provided in a back face side of a orbiting scroll. Further, an internal gap of the main bearing is set to a value which is larger than a value obtained by subtracting the double value of an eccentric amount difference between an eccentric amount of an auxiliary crank shaft and an eccentric amount of the drive shaft from an internal gap of the orbiting bearing. Accordingly, the internal gap of the main bearing does not come to 0 even if a compressor comes to a steady state. | 07-01-2010 |
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| 20090085312 | Scroll type fluid machine and air suspension apparatus using the same - A pressure keeping mechanism is provided downstream of a discharge port of a compressor. The pressure keeping mechanism is set to a small flow path area having only a bypass orifice until a pressure in a downstream pipe reaches a predetermined pressure after the operation is started, the pressure keeping mechanism is set to a large flow path area of a pressure keeping valve which is opened when the pressure exceeds the predetermined pressure and the bypass orifice, thereby changing the flow path area at least in two stages. The pressure in the upstream pipe which is almost closed by the pressure keeping valve can be thus increased at a dash and the pressure in a compression chamber can also be increased swiftly immediately after the compressor is started. | 04-02-2009 |
| 20090110580 | Scroll type fluid machine - The present invention provides a scroll type fluid machine realizing reduced attachment space in a casing and improvement in workability at the time of assembly and the like by using a plurality of ball coupling mechanisms. A plurality of ball coupling mechanisms are disposed between a casing and a rear side of an orbiting scroll. Each of the ball coupling mechanisms includes first and second thrust receivers (reception plates), a sphere, and a cylindrical ring. A thrust load to be applied to an end plate of the orbiting scroll is received between the first and second thrust receivers (reception plates) and the sphere. The cylindrical ring disposed between the first and second thrust receivers displays a so-called rotation preventing effect in such a manner that its outer peripheral surface makes a rolling contact with inner peripheral surfaces of cylindrical portions in association with an orbiting motion of the orbiting scroll. | 04-30-2009 |
| 20090169405 | Compressor - There is provided with a compressor comprising: a compressor main body in which fluid inhaled from an inhale port is compressed, and the compressed fluid is exhausted from an exhaust port; and a pressure retaining device where provided on the exhaust port side of the compressor main body, and retaining pressure on the exhaust port side, wherein the pressure retaining device comprises: a valve body communicating with the exhaust port; an urging member normally urging the valve body into a direction to be closed; and a back-pressure means where an intermediate pressure between the inhale port and the exhaust port of the compressor main body is introduced as back pressure which affects the valve body, and wherein the valve body of the pressure retaining device is openable according to difference between pressure at the exhaust port, and the intermediate pressure of the back-pressure means and force by the urging member. | 07-02-2009 |
| 20090246058 | Scroll-type fluid machine - A scroll-type fluid machine comprising: a casing; a fixed scroll; an orbiting scroll; and an auxiliary crank device in which to prevent the orbiting scroll from being rotated, wherein the auxiliary crank device comprises: a fixed-side bearing body provided on either a casing side or a fixed scroll side; an orbiting-side bearing body provided on an orbiting scroll side; and an auxiliary crank shaft in which a fixed-side shank is rotatably supported with the fixed-side bearing body, and an orbiting-side shank is rotatably supported with the orbiting-side bearing body; a tip of the fixed-side shank of the auxiliary crank shaft is fixed in a radius direction, and a tip of the orbiting-side shank of the auxiliary crank shaft is fixed in a radius direction; and a deformative portion is provided between the tip of the fixed-side shank and the tip of the orbiting-side shank of the auxiliary crank shaft. | 10-01-2009 |
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| 20110037232 | MECHANICAL SEAL DEVICE - The present invention provides a mechanical seal device, capable of sealing special fluid such as chemicals, easy to be mounted to a device and small in size. The mechanical seal device comprises a seal cover, a first seal ring axially-movably arranged in an inner circumference side of the seal cover, a second seal ring fixed to a rotary shaft, a spring arranged in the inner circumference side of the seal cover and pressing the first seal ring in a direction toward the second seal ring and a bellows mounted to the inner circumference side of the seal cover and axially-expandably mounted between the seal cover and the first seal ring. The spring is mounted to the seal cover along the axial direction in which the bellows is expanded and contracted. | 02-17-2011 |
| 20110101617 | Double Mechanical Seal Device - The present invention provides a cartridge type double seal having a size small enough to be mounted on the outer surface of an apparatus without using a space in a stuffing box and without requiring any special design and modification. In a seal device ( | 05-05-2011 |
| 20120001394 | Mechanical Seal Device - Provided is a mechanical sealing device which is simply configured and wherein a rotation ring can be stably held in a specified axial position, and warping of the sealed surfaces can be prevented, thereby making it possible to obtain appropriate sealing characteristics. In a mechanical sealing device, a rotation ring is axially held between a rotation ring locking surface of a sleeve and a rotation ring locking surface of a collar. Furthermore, the sleeve, the rotation ring fixing collar, and the rotation ring are integrated together by means of a baffle knock pin for the rotation ring. Due to the above, whether positive pressure or negative pressure is applied, the rotation ring does not move, nor do the sealed surfaces of the rotation ring become warped. Moreover, assembly can be simply performed only by means of the knock pin. | 01-05-2012 |
| 20120139186 | Mechanical Seal Device - Provided is a small mechanical seal device which can efficiently wash a sealing surface, and can appropriately seal a sealed fluid and a quenching liquid. In a mechanical seal device ( | 06-07-2012 |
| 20120187636 | Mechanical Seal Device - In order to provide a mechanical seal device, which is suitably used even under a condition that fluid pressure is frequently switched between a positive pressure and a counter pressure, a mechanical seal device comprising; a rotary ring | 07-26-2012 |
| 20120248705 | MECHANICAL SEAL DEVICE - The object of the present invention is to provide a divisional type mechanical seal of outside type which joins the seal face in flat and strongly even in a seal ring having a different thickness in the radial direction, and to exhibit an appropriate sealing ability. In the mechanical seal device of the present invention, the circumference grooves | 10-04-2012 |
| 20150159759 | DOUBLE MECHANICAL SEAL DEVICE - A double mechanical seal device, comprising a rotating ring, a first static ring, a second static ring, and a seal cover. A first bellows seal device is provided between the first static ring and the seal cover, and the first bellows seal device comprises a first bellows part capable of expanding and contracting in an axial direction, a first cover-side adapter, and a first static ring-side adapter. The first bellows seal device and the first static ring are disposed so that in a state where there is no pressure difference between the inside and outside of the first bellows part, a balance line of the first bellows part passes through a cross section of an O ring and a first static seal surface. | 06-11-2015 |
