Aisin Seiki Kabushiki Kaisha

Kabushiki Kaisha Riken

Aisin Seiki Company, Ltd.

Showa Aluminum Corporation

Aisin Seiki Kabushika

Yutaka Momose

Tetsumi Watanabe

Tomokimi Mizuno

Tunesaku Itaba

Daisaku Kobayashi

Hiroyuki Katsuda

Koichiro Kasahara

Akira Yamaguro

Kazuaki Nakamura

Yoshiaki Wada

Shin Kitano

Ryoichi Hoshino

Yoshihiro Naito

Katsuhiro Mori

Kazuaki Yamaguchi

Masaru Tsunekawa

Shigenori Haramura

Takeyoshi Kaminishizono

Noboru Ohtani

Masayoshi Okamoto

Masahiko Hasegawa

Juniti Mita

Hiroyuki Ohuchi

Kouzi Hiraiwa

Koji Fujiwara

Tsunesaku Itaba

Hiroki Tanaka

Shigeyoshi Tabata

Tunesaku Itara

In a Stirling engine comprising: a cylinder having an expansion space; a housing accommodating a heat accumulating unit; and a heating unit through which said expansion space is communicated with the heat accumulating unit, the heating unit is formed by using a flattened pipe, and preferably heat transferring fins, and reinforcing members for preventing the increase in volume of the flow path in the heating unit are provided in the latter, so that in connecting the heating unit to the cylinder and the housing, the number of assembling steps is decreased, and the heating unit is sufficiently large in dead volume ('flow path sectional area' x 'flow path length') and in heat transfer area.

Stirling engine

A sealing device for being mounted on a piston which is movably fitted within a cylinder, includes a sealing ring member having opposite end portions which are interlocked with each other along the circumferential direction of the sealing ring member, and an expanding device for expanding the radius of sealing ring member in the radial direction thereof.

Piston sealing ring having interlocking ends

A Stirling engine includes an expansion cylinder, a compression cylinder, and a plurality of conduits which each extend between and connect the expansion cylinder and the compression cylinder. A plurality of heating portions are provided, each of which is disposed in one of the conduits in order to be connected with the expansion cylinder. A plurality of cooling portions are also provided, each of which is disposed in one of the conduits in order to be connected with the compression cylinder. A plurality of regenerative portions are also included, each of which is disposed in one of the conduits in order to connect one of the heating portions and one of the cooling portions. Each of the regenerative portions possesses a length according to the temperature of the working fluid in the corresponding heating portion.

A compressor integral with a Stirling engine having a pressure space comprises a housing, a partition wall provided in the housing, a first pressure chamber defined in the housing at one side of the partition wall and connected with the pressure space of the Stirling engine, and a second pressure chamber defined in the housing at the other side of the partition wall and connected with the first pressure chamber via an orifice. A rod passes through the partition wall and has a first end and a second end located in the first pressure chamber and the second pressure chamber, respectively. A third pressure chamber is defined by a first plate which is connected to the first end of the rod and a first bellows located between the first plate and the partition wall. A fourth pressure chamber is defined by a first plate which is connected to the second end of the rod and a second bellows located between the second plate and the partition wall. First and second passages are formed in the partition plate, and an intake valve device is provided for establishing fluid communication between the first passage and either the fourth pressure chamber or the third pressure chamber whichever is under expansion. A discharge valve device is also provided for establishing fluid communication between the second passage and either the fourth pressure chamber or the third pressure chamber whichever is under compression.

Compressor integral with stirling engine

A Stirling engine seal assembly includes a seal ring body and an expander. The seal ring body consists of a matrix made of polytetrafluoroethylene compounded and filled with carbon fibers and at least one powder selected from the group consisting of carbon powder, boron nitride powder and molybdenum disulfide powder. The plate expander is in abutting contact with the inner peripheral surface of the seal ring body for urging the seal ring body in the direction of its outer circumference.

Seal assembly for stirling engine

There is disclosed an oil-free compressor integral with a Stirling engine. The compressor is used as an air compressor or in air-conditioning equipment. The Stirling engine has a cylinder in which a displacer piston is slidable. An expansion space and a compression space are formed on opposite sides of the piston. The compressor comprises a first pressure chamber communicating with the compression space, a second pressure chamber connected with a Rankine heat pump circuit via valves, a first buffer chamber communicating with the compression space via a first orifice, and a second buffer chamber connected with the second pressure chamber via a second orifice. The first pressure chamber is partitioned from the second pressure chamber by a first diaphragm. The first buffer chamber is partitioned from the second buffer chamber by a second diaphragm. These two diaphragms are connected together by a rod such that they move together axially. The pressure acting on one side of each diaphragm is balanced by the pressure acting on the other side.

Compressor integral with Stirling engine

An air-cycle air conditioning system comprises a first turbine disposed in an exhaust passage of a prime mover and driven by the energy of exhaust gases, a first compressor placed in coaxial relation to the first turbine and rotatable in response to the operation of the first turbine so as to intake and compress an air, a second turbine coupled to an outlet end of the first compressor through a first line and rotatable by the energy of a compressed air from the first compressor so as to expand and cool the compressed air, a first heat exchanger disposed in the first line and effecting heat exchange between the compressed air and an outside air, a second heat exchanger connected to the second turbine through a second line and effecting heat exchange between the air supplied from the second turbine and an air supplied from a fan, a second compressor placed in coaxial relation to the second turbine and rotatable in response to the operation of the second turbine so as to intake and compress an air, an auxiliary burner capable of burning the air supplied from the second compressor and feeding the resultant exhaust gases to the first turbine, a load sensor for detecting load condition of the prime mover, and a controller for permitting the auxiliary burner to feed the exhaust gases to the first turbine when the load sensor detects that the prime mover runs on low load.

Air-cycle air conditioning system

The present invention relates to a sealing device provided between a piston rod of a Stirling cycle engine and a variable volume chamber. The sealing device is provided with an arrangement so as to equalize pressures between a seal chamber and the variable volume chamber of the Stirling cycle engine. By equalizing pressures between the respective spaces, an overpressure is prevented which would otherwise distort the seal and permit oil to be carried into the working volume of the Stirling cycle engine.

Sealing device for a piston rod of a stirling engine

A Stirling engine is provided in which the burner has an annular shape and is disposed in an outside lower portion of the heater. The burner has a plurality of fuel delivery holes and a plurality of air supplying holes which open through an inner circumferential surface of the burner. The arrangement permits the Stirling engine to use a fuel line under a low pressure and to be easily used as a power source of a compressor for an air-conditioning and heating device for domestic use. Also, the arrangement permits the Stirling engine to be constructed without a fuel/air mixing device and to be used with a smaller blower. Furthermore, the arrangement permits the burner to be made from a variety of material, thereby reducing the manufacturing cost.

An oil seal assembly includes an oil seal having a lip contacting the outer peripheral surface of a reciprocating shaft, a holder for holding the oil seal about the shaft, and an annular spring for urging the lip against the outer peripheral surface of the shaft. The lip has a flat surface which is inclined with respect to the outer peripheral surface of the shaft. When the oil seal is mounted on the shaft, the flat surface is brought into surface contact with the outer peripheral surface of the shaft by an urging force applied by the spring.

Oil seal assembly

A stirling engine is provided in which the heater comprises an extended part of the expansion chamber as defined by an expansion cylinder. The expansion cylinder extends from the expansion chamber toward an upper side of the engine. A hollow cylindrical member receives the extended part of the expansion cylinder. The arrangement permits a stirling engine to be provided which decreases the number of parts utilized in the heater section while at the same time increasing the heat transfer area of the heater.

A sealing ring assembly comprises a synthetic resin sealing ring body having two opposing stepped cut surface portions including respective planer portions in sliding contact with each other, a synthetic resin gas sealing ring in contact with the inner circumferential surface of the sealing ring body, and a metal ring in contact with the inner circumferential surface of the gas sealing ring. To prevent the stepped cut surface portions from sticking to each other at the planar portions thereof, a metal film layer is provided on a planar portion of one of the stepped cut surface portions.

Synthetic resin sealing ring assembly with metal film layer

A combustor for use in an external combustion engine having a rotary-type regenerator heat exchanger includes a housing having a combustion chamber, an air chamber, a plurality of first outlet ports, and a first inlet port. A main partition defining the combustion chamber and the air chamber in the housing has a plurality of second outlet ports defined in a peripheral portion thereof and a second inlet port defined in a central portion thereof. An annular regenerator is rotatably supported in the housing, dividing the air chamber into first and second chambers, the regenerator having first and second axially opposite end surfaces and a multiplicity of axial through-holes extending therebetween. First subpartitions define first outlet passages communicating between the first outlet ports, respectively, and the first end surface of the regenerator, and divide the first chamber into air and exhaust sections. Second subpartitions define second outlet passages communicating between the second outlet ports, respectively, and the second end surface of the regenerator, and divide the second chamber into air and exhaust sections.

Combustor for external combustion engine having rotary-type regenerator

A rod seal device for a Stirling engine includes a piston rod connecting operating piston and a guide piston latter being served as a power take-off device, various seal members disposed between the two pistons and surrounding the outer peripheral portion of the rod. The seal device further includes a plurality of chambers disposed around the outer periphery of the rod between a working chamber of the engine and a working chamber of the power take-off for discharging any gas leaked therefrom or preventing any undesired mixture of the two different working gases.

Rod seal device for stirling engines

A rod seal device for a Stirling engine includes a high pressure oil chamber, an oil seal, and a low pressure oil chamber in series disposed between a compression chamber of the engine and a driving unit of power take-off. The oil seal includes an annular slit open to one end of the low pressure oil chamber for scraping oil from low pressure oil chamber to the high pressure oil chamber.

Growing community of inventors

Anjo, Japan

Yutaka Momose