Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Mitsubishi Heavy Industries Automotive Thermal Systems Co., Ltd.

Takuma Yamashita

Makoto Takeuchi

Hajime Sato

Takahide Ito

Keita Kitaguchi

Kazuhide Watanabe

Hirofumi Hirata

Genta Yoshikawa

Yoshiyuki Kimata

Hirohumi Hirata

Akihiro Kanai

Makoto Hattori

Takayuki Hagita

Katsuhiro Fujita

Takayuki Kuwahara

Makoto Ogawa

Mikito Sasaki

Taichi Tateishi

Masahiro Taniguchi

Yohei Hotta

Kazuki Takahashi

Yogo Takasu

Masashi Hamano

Masahiro Nii

Risako Koba

Yoshiyuki Okada

Youhei Hotta

Yougo Takasu

Emiri Uchikawa

A scroll compressor with a stationary scroll, an orbiting scroll, and a discharge port through which a fluid that has been compressed by both the scrolls is discharged. An end plate of the orbiting scroll is provided with an end-plate side stepped portion formed such that, along a spiral of a spiral wrap, the height thereof increases toward a central side of the spiral and decreases toward an outer end side thereof. A spiral wrap of the stationary scroll is provided with a wall-portion side stepped portion formed corresponding to the end-plate side stepped portion such that the height thereof decreases toward the central side of the spiral and increases toward the outer end side thereof. A pair of compression chambers face each other. The ventral side compression chamber communicates with the discharge port before the dorsal side compression chamber communicates with the discharge port.

Scroll compressor including end-plate side stepped portions of each of the scrolls corresponding to wall-portion side stepped portions of each of the scrolls

A scroll compressor with a stationary scroll, an orbiting scroll, and a discharge port through which a fluid that has been compressed by both the scrolls is discharged. An end plate of the orbiting scroll is provided with an end-plate side stepped portion formed such that, along a spiral of a spiral wrap, the height thereof increases toward a central side of the spiral and decreases toward an outer end side thereof. A spiral wrap of the stationary scroll is provided with a wall-portion side stepped portion formed corresponding to the end-plate side stepped portion such that the height thereof decreases toward the central side of the spiral and increases toward the outer end side thereof. A pair of compression chambers which face each other, the ventral side compression chamber communicates with the discharge port before the dorsal side compression chamber communicates with the discharge port.

Provided is a tip seal that makes it possible to improve the durability of a tip seal installed on the tooth tip of a wall even when a continuously inclined section is provided to the wall. The tip seal is provided with: a tip seal inclined section (A) installed in a groove section of a wall in which the height changes continuously in a spiral direction; and a tip seal flat section (B) that is installed in a groove section of the wall in which the height is fixed in the spiral direction and that is adjacent to the tip seal inclined section (A). A recess () is formed at a position away from the adjacent area between the tip seal inclined section (A) and the tip seal flat section (B).

Tip seal and scroll fluid machine using same

In this scroll fluid machine, a tip seal () that is in contact with facing end plates () and that is for sealing in a fluid is provided to a tip seal groove () formed on the tooth tip of a wall (). The tooth bottoms of the end plates () have a shape in which a central section is deeper than a side section () in a width direction orthogonal to the spiral direction of a wall (). During operation, the protrusion amount (&#x3b4;) when the tip seal () protrudes from the tooth tip of the wall () in an inclined section and is in contact with the facing end plates is greater than the protrusion amount (&#x3b4;) when the tip seal () protrudes from the tooth tip of the wall () in a flat section and is in contact with the facing end plates.

Scroll fluid machine with decreasing inter-facing surface and arc shape end plate central portion

Provided is a co-rotating scroll compressor comprising a synchronous drive mechanism that can achieve a long life. The compressor comprises a driving side scroll member () driven to rotate about a driving side rotation axis CL, a driven side scroll member () driven to rotate about a driven side rotation axis CL, a hollowed drive shaft () that is connected to the driving side scroll member (), and driven by a motor () to rotate, and a driven shaft () that is disposed inside the drive shaft (), and has one end connected to the drive shaft () via a first flexible coupling () and the other end connected to the driven side scroll member () via a second flexible coupling ().

Co-rotating scroll compressor and assembly method therefor

A scroll compressor includes a drive bush disposed in one end portion in an axial direction of a main shaft, and configured to be eccentrically rotated in accordance with rotation of the main shaft, a pair of angular bearings arranged back-to-back, and respectively clearance-fitted to an outside of the drive bush, a compression unit that has a boss portion which protrudes from an end plate of a movable scroll and in which the angular bearings are interference-fitted to an inner peripheral surface of the boss portion, and a preload application unit configured to apply a preload to the angular bearings in a direction in which the angular bearings are configured to move toward each other.

Scroll compressor and method for producing same

A co-rotating scroll compressor includes a driving-side scroll member (), a driven-side scroll member (), a pin ring mechanism (), a driving-side bearing () that rotatably supports the driving-side scroll member (), and a driven-side bearing () that rotatably supports the driven-side scroll member (). A center of gravity of at least one of the driving shaft (), the driving-side scroll member (), and the driven-side scroll member () is shifted from rotation centers (CL, CL) by a predetermined distance. The predetermined distance is set so that a total bearing load obtained by centrifugal force and fluid compression that is 5% of a dynamic load rating of the driving-side bearing () and the driven-side bearing () or more is generated.

Co-rotating scroll compressor and method for designing the same

The present invention provides a co-rotating scroll compressor that can inhibit leakage of lubricant supplied to a synchronous drive mechanism. A co-rotating scroll compressor includes a drive-side plateplaced between a driving scroll memberand a motorat a predetermined distance from the driving scroll memberin a direction of a drive-side rotation axis CL. The drive-side plateincludes a shaft portionfixed to a driving shaftof the motorand a fixing portionfixed to an outer periphery of the driving scroll member, and a synchronous drive mechanism made up of a needle bearingand a pinis placed between the drive-side plateand driving scroll member

Co-rotating scroll compressor

One of a pair of a fixed scroll and an orbiting scroll is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of a spiral wrap, and the other one of the scrolls is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of a spiral wrap. A blade bottom surface of an end plate of the fixed scroll is set as a reference surface for setting a chip gap between both the scrolls. When a wrap height of the spiral wrap of the orbiting scroll is represented by (L) (Lo, Li) and a wrap height of the spiral wrap of the fixed scroll is represented by (lo, li), L (Lo, Li)&#x3e;1 (lo, li) is satisfied.

Scroll fluid machine including a pair of fixed scrolls and an orbiting scroll

To provide a scroll fluid machine that can improve reliability in abrasion resistance of a power transmission mechanism including a pin member and a ring member. The machine includes a driving scroll member (), a driven scroll member (), and a power transmission mechanism () that transmits power to synchronously rotate both scroll members () and allow the scroll members to revolve and orbit relative to each other. The power transmission mechanism () includes a pin () attached to the driven scroll member (), a ring body () provided in the driving scroll member () and having an inner circumference in contact with an outer circumference of the pin (), and a circular groove () housing the ring body () and having an inner circumference in contact with an outer circumference of the ring body (). Of surface contact pressure in a contact portion between the outer circumference of the pin () and the inner circumference of the ring body (), and surface contact pressure in a contact portion between the outer circumference of the ring body () and the inner circumference of the circular groove (), the contact portion having higher surface contact pressure has a larger frictional torque.

Scroll fluid machine with improved power transmission mechanism

The inverter-integrated electric compressor integrally incorporates an inverter device, and comprises a UVW busbar that conducts three-phase alternating current power converted by an inverter circuit on a circuit board to a glass terminal that penetrates an inverter housing section. The UVW busbar being configured of three long thin plate-shaped conductive material busbars, one end of each being provided with a connector terminal that is connected to the glass terminal, are the three conductive material busbars being housed in and integrated with a resin case. A section of each of the conductive material busbars in at least one location in the length direction thereof is adhered and fixed to the resin case side, using adhesive.

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Tokyo, Japan

Takuma Yamashita