US 2007/0181773 A1Published application

Sealing structure of a rotation unit and air conditioning apparatus having the same

AssigneesDenso Corporation, Tokai Riki Mfg. Co.

InventorsTakahiro Tokunaga, Koichi Ito, Yoshio Miyata, Nobuyuki Hashimura, Akihisa Kurokawa

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Abstract

A sealing structure of a rotation unit has a first member defining a first axis, a second member defining a second axis and an O-ring disposed between them. The first member and the second member are substantially coaxial, and at least one of the first member and the second member rotates about its respective axis. The first member and the second member have a first surface and a second surface extending in a direction perpendicular to the first and second axes, respectively. The O-ring is disposed between and in contact with the first surface and the second surface. The sealing structure further has a movable range regulating part that maintains the first and second axes in substantially alignment by reducing relative displacement of at least one of the first and second members away from alignment.

Claims14

Dependent claims

A sealing structure of a rotation unit, comprising:

a first member defining a first axis;
a second member defining a second axis, wherein the first member and the second member are disposed such that the first axis and the second axis are aligned, and at least one of the first member and the second member rotates about its respective axis, wherein the first member has a flange portion having a first surface extending in a direction perpendicular to the first axis, and the second member has a second surface extending in a direction perpendicular to the second axis;
an O-ring disposed between and in contact with the first surface and the second surface, wherein the O-ring has a cross-section in which a dimension in a direction parallel to the first and second axes is smaller than a dimension in a direction perpendicular to the first and second axes, the cross-section defined in a direction parallel to the first and second axes;
and
a movable range regulating part that that reduces relative displacement of at least one of the first and second members away from the alignment within a predetermined range.

2 more elements

An air conditioning apparatus comprising:

a case defining a space through which air flows;
a heat exchanger disposed in the case for performing heat exchange between the air and a fluid flowing therein, the heat exchanger rotatable about a rotation axis;
a pipe unit in communication with the heat exchanger and through which the fluid flows, wherein
the pipe unit has a first section and a second section coaxially coupled, the first section is fixed to the case and the second section is coupled to the heat exchanger and rotatable with the heat exchanger about the rotation axis,
the first section has a first wall and a second wall opposed to each other in a direction parallel to the rotation axis,
the second section has a flange portion extending in a direction perpendicular to the rotation axis, and the flange portion is disposed between the first wall and the second wall of the second section, the air conditioning apparatus further comprising:
an O-ring disposed between and in contact with the flange portion and the first wall of the first section, wherein the O-ring has a cross-section in which a dimension in a direction parallel to the rotation axis is smaller than a dimension in a direction perpendicular to the rotation axis.

4 more elements

Dependencies are inferred from the claim text.