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US 6,474,698 B2Granted
Connection piece for a heat exchanger
AssigneeBehr GmbH & Co.
InventorsHelmut Dobler, Armin Rau
Life of this patent
Estimating the term…
Abstract
A metallic connection piece for an all-metal heat exchanger is capable of being used for a plastic hose coupling. The connection piece (20) has a double bead as a stop region with two integrally formed anti-twist retaining means (26, 27) that engage into axial grooves (40, 41) of a hose coupling (31) and ensure fault-free mounting.
Claims22
A metallic connection piece for a heat exchanger having a metallic header tank, the connection piece being capable of being brazed to the header tank, wherein the connection piece comprises:
- region a) comprising a connecting region for the header tank;
- region b) comprising a stop region formed by a continuous collar, wherein the continuous collar of the stop region has integrally formed thereon at least one first anti-twist retaining protrusion that projects radially beyond the diameter of the continuous collar;
- region c) comprising a retaining region formed by a groove;
- and
- region d) comprising a sealing and centering region formed by a cylindrical part that merges into a conical part,
- said regions a)-d) adjoining one another in the direction of the longitudinal axis of the connection piece.
3 more elements
A connection structure for a heat exchanger having a metallic header tank and adapted for accepting a hose coupled thereto, the connection structure comprising:
- a metallic connection piece for a heat exchanger having a metallic header tank, the connection piece being capable of being brazed to the header tank, wherein the connection piece comprises:
- region a) comprising a connecting region for the header tank;
- region b) comprising a stop region formed by a continuous collar, wherein the stop region comprises a double bead, and wherein one bead has integrally formed thereon at least one anti-twist retaining protrusion that projects beyond the diameter of the bead;
- region c) comprising a retaining region formed by a groove;
- and
- region d) comprising a sealing and centering region formed by a cylindrical part that merges into a conical part;
- said regions a)-d) adjoining one another in the direction of the longitudinal axis of the connection piece;
- a plastic sleeve placed axially over the connection piece;
- a sealing ring contained between the cylindrical part of the sealing and centering region and the inside of the plastic sleeve;
- and
- a retaining strap positioned in the groove of the retaining region;
- wherein the plastic sleeve comprises at least one axial groove for receiving the anti-twist retaining protrusion.
9 more elements
An all metallic heat exchanger adapted for accepting a hose coupled thereto, comprising:
- a metallic header tank;
- a connection piece brazed to the header tank, wherein the connection piece comprises:
- region a) comprising a connecting region for the header tank;
- region b) comprising a stop region formed by a continuous collar, wherein the stop region comprises a double bead, and wherein one bead has integrally formed thereon at least one anti-twist retaining protrusion that projects beyond the diameter of the bead;
- region c) comprising a retaining region formed by a groove;
- and
- region d) comprising a sealing and centering region formed by a cylindrical part that merges into a conical part;
- said regions a)-d) adjoining one another in the direction of the longitudinal axis of the connection piece;
- a plastic sleeve placed axially over the connection piece;
- a sealing ring contained between the cylindrical part of the sealing and centering
- region and the inside of the plastic sleeve;
- and
- a retaining strap positioned in the groove of the retaining region;
- wherein the plastic sleeve comprises at least one axial groove for receiving the anti-twist retaining protrusion.
11 more elements
A connection structure for a heat exchanger having a metallic header tank and adapted for accepting a hose coupled thereto, the connection structure comprising:
- a metallic connection piece for a heat exchanger having a metallic header tank, the connection piece being capable of being brazed to the header tank, wherein the connection piece comprises:
- region a) comprising a connecting region for the header tank;
- region b) comprising a stop region formed by a continuous collar, wherein the continuous collar of the stop has integrally formed thereon at least one anti-twist retaining protrusion that projects beyond the diameter of the continuous collar and wherein said at least one anti-twist retaining web runs axially and extends in the axial direction from the continuous collar over the region of the groove;
- region c) comprising a retaining region formed by a groove;
- and
- region d) comprising a sealing and centering region formed by a cylindrical part that merges into a conical part;
- said regions a)-d) adjoining one another in the direction of the longitudinal axis of the connection piece;
- a plastic sleeve placed axially over the connection piece;
- a sealing ring contained between the cylindrical part of the sealing and centering region and the inside of the plastic sleeve;
- and
- a retaining strap positioned in the groove of the retaining region;
- wherein the plastic sleeve comprises at least one axial groove for receiving the anti-twist retaining protrusion.
9 more elements
An all metallic heat exchanger adapted for accepting a hose coupled thereto, comprising:
- a metallic header tank;
- a metallic connection piece brazed to the header tank, wherein the connection piece comprises:
- region a) comprising a connecting region for the header tank;
- region b) comprising a stop region formed by a continuous collar, wherein the continuous collar of the stop has integrally formed thereon at least one anti-twist retaining protrusion that projects beyond the diameter of the continuous collar and wherein said at least one anti-twist retaining web runs axially and extends in the axial direction from the continuous collar over the region of the groove;
- region c) comprising a retaining region formed by a groove;
- and
- region d) comprising a sealing and centering region formed by a cylindrical part that merges into a conical part;
- said regions a)-d) adjoining one another in the direction of the longitudinal axis of the connection piece;
- a plastic sleeve placed axially over the connection piece;
- a sealing ring contained between the cylindrical part of the sealing and centering
- region and the inside of the plastic sleeve;
- and
- a retaining strap positioned in the groove of the retaining region;
- wherein the plastic sleeve comprises at least one axial groove for receiving the anti-twist retaining protrusion.
11 more elements
Dependencies are inferred from the claim text.