Synthetic resin bearing and scroll compressor having the same
AssigneeLG Electronics Inc.
InventorsJinsung Park, Eunsoo Yang, Chuljig Bae, Byeongchul Lee
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Abstract
A synthetic resin bearing and a scroll compressor using the same are provided. In the synthetic resin bearing as a journal bearing fixed to an orbiting scroll or a main frame and relatively rotated with respect to a rotational shaft in a scroll compressor, the journal bearing is made of a PEEK material, and a thickness t of the journal bearing is smaller than a thickness t1 with which a temperature in a contact surface thereof with the rotational shaft during an operation of the scroll compressor corresponds to a glass transition temperature.
Claims14
A synthetic resin bearing as a journal bearing fixed to an orbiting scroll or a main frame and relatively rotated with respect to a rotational shaft in a scroll compressor, wherein the journal bearing is made of a PEEK material, wherein a thickness t of the journal bearing is smaller than a thickness t1 at which a temperature at a contact surface of the journal bearing with the rotational shaft during an operation of the scroll compressor corresponds to a glass transition temperature, and wherein the journal bearing is press-fit to the orbiting scroll or the main frame so as to be fixed to the orbiting scroll or the main frame, and wherein the thickness t of the journal bearing is greater than a minimum thickness t2 with which the journal bearing is press-fit without plastic deformation.
A scroll compressor, comprising:
- a casing;
- a main frame fixed to the casing and having a shaft insertion hole formed therein;
- a fixed scroll disposed above the main frame;
- an orbiting scroll that forms a compression chamber together with the fixed scroll and includes a boss formed on a lower surface of the orbiting scroll;
- a rotational shaft rotatably driven and having an end insertedly fixed in the boss in a state in which the rotational shaft is insertedly positioned in the shaft insertion hole;
- and
- a journal bearing fixedly press-fit to the shaft insertion hole and the boss and made of a PEEK material, wherein a thickness with which a temperature in a contact surface between the rotational shaft and the journal bearing during an operation of the scroll compressor corresponds to a glass transition temperature is t1, wherein a minimum thickness with which the journal bearing is press-fit to the shaft insertion hole or the boss without plastic deformation is t2, and wherein a thickness t of the journal bearing satisfies t2<t<t1.
Dependencies are inferred from the claim text.