Rotor for heat generators and its manufacturing method
AssigneeKabushiki Kaisha Toyoda Jidoshokki Seisakusho
InventorsShigeru Suzuki, Takashi Ban, Tatsuya Hirose, Tatsuyuki Hoshino, Hidefumi Mori
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Abstract
A method for producing a rotor assembly of a heat generator. The rotor assembly includes an inner rotor and an outer rotor that is rotated integrally with the inner rotor. The producing method includes forming the inner rotor from iron or iron alloy, and casting the outer rotor around the inner rotor by aluminum or aluminum alloy so that the outer rotor is firmly fixed to the inner rotor without slippage when heated.
Claims28
A method for producing a rotor assembly for a heat generator, wherein the heat generator includes a first rotor, a second rotor, the second rotor being rotated integrally with the first rotor, and viscous fluid, wherein the first and second rotors rotate to shear the viscous fluid to heat the viscous fluid, the method comprising the steps of:
- forming the first rotor from a first material;
- and
- casting the second rotor by a second material around the first rotor, wherein the second material has a thermal expansion coefficient greater than that of the first material.
A rotor assembly for shearing viscous fluid to heat the viscous fluid in a heat generator, wherein the heat generator has a housing and a heating chamber defined in the housing, wherein the heating chamber accommodates the rotor assembly and the viscous fluid, the rotor assembly comprising:
- a first rotor made of a first material;
- a second rotor integrally attached with the first rotor by casting, wherein the second rotor is made of a second material which has a thermal expansion coefficient greater than that of the first material.
A heat generator comprising:
- a housing;
- a heating chamber defined in the housing;
- viscous fluid accommodated in the heating chamber;
- and
- a rotor assembly for shearing the viscous fluid to heat the viscous fluid, wherein the rotor assembly includes:
- a first rotor made of a first material;
- and
- a second rotor integrally attached to the first rotor by casting, wherein the second rotor is made of a second material which has a thermal expansion coefficient greater than that of the first material.
A method for producing a rotor assembly for a heat generator, wherein the heat generator includes an inner rotor, an outer rotor, the outer rotor being rotated integrally with the inner rotor, and viscous fluid, wherein the outer rotor rotates to shear the viscous fluid to heat the viscous fluid, the method comprising the steps of:
- forming the inner rotor from a first material;
- and
- uniformly casting the outer rotor by a second material on the inner rotor, wherein the second material has a thermal expansion coefficient greater than that of the first material.
A method for producing a rotor assembly for a heat generator, wherein the heat generator includes a drive shaft, a sleeve, which is fitted to the drive shaft, a disk rotor, the disk rotor being rotated integrally with the drive shaft and the sleeve, and viscous fluid, wherein the disk rotor rotates to shear the viscous fluid to heat the viscous fluid, the method comprising the steps of:
- first forming the drive shaft from a first material;
- second forming the sleeve from a second material, wherein the second material has a thermal expansion coefficient substantially equal to that of the first material;
- casting the disk rotor by a third material on the sleeve, wherein the third material has a thermal expansion coefficient greater than those of the first material and the second material;
- and
- press-fitting the sleeve to the drive shaft.
Dependencies are inferred from the claim text.