EP0022234A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Radiator, particularly for passenger car thermo-ventilation and air-conditioning systems
Assignee: Comind SpA
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Filing: 1980-06-30
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Granted: —
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Expires: 2000-06-30
Abstract
Abstract A radiator for autovehicle air-conditioning systems comprises a radiating pack formed from metal tubes and fins, the ends of the tubes communicating with manifolds (13) each comprising a base (B) and a cover (C) connected together by a peripheral weld (S). The ends of the radiating pack tubes (11) are passed through holes in the base (B) and the portion of the tube ends (11a) protruding beyond the base plane is embedded in an interconnecting and sealing polyurethane layer (P).
Inventors
- 👤 Riccardo Landi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 09:49
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/165; F28F9/167; F28F9/0202; F28F9/0204; F28F9/0209; F28F9/162; F28F2230/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A radiator, particularly for passenger car thermo-ventilation and air-conditioning systems, comprising a radiating pack formed from metal tubes and fins and wherein the ends of said tubes communicate with manifolds made of a plastics material, characterized in that each manifold (13-14) comprises a base (B) and a cover (C) connected together by means of a peripheral weld (S); in that the ends (11a) of the radiating pack tubes (11) are passed through holes in the base, and in that the portion of said ends (11a) which protrudes beyond the base plane is embedded in an expanded polyurethane layer (P) acting as an interconnecting and sealing means between said tubes and said base.
Claim 2
Dependent Claim
112 words
A radiator, particularly for passenger car thermo-ventilation and air-conditioning systems, comprising a radiating pack formed from metal tubes and fins and wherein the ends of said tubes communicate with manifolds made of a plastics material, characterized in that each manifold (13-14) comprises a base (B) and a cover (C) connected together by means of a peripheral weld (S); in that the ends (11a) of the radiating pack tubes (11) are passed through holes in the base, and in that the portion of said ends (11a) which protrudes beyond the base plane is embedded in an expanded polyurethane layer (P) acting as an interconnecting and sealing means between said tubes and said base.
Claim 3
Dependent Claim
55 words
A radiator according to Claim 1, wherein the inside diameters of the holes provided in the base (B) of each manifold (13-14) is larger than the diameter of the through portion (11a) of the tubes (11) to define an annular space whereat the expanded polyurethane layer (P) is distributed to form an annular seal (G).
Claim 4
Dependent Claim
30 words
· 3. A radiator according to Claims 1 and 2, wherein the polyurethane layer (P) partly penetrates the ends of the tubes (11) to form a tubular sealing plug (T).
Claim 5
Dependent Claim
55 words
A radiator according to the preceding claims, wherein the expanded polyurethane layer (P) has a lateral profile defined by an inclined wall (PL) protruding beyond the outline of the corresponding inner wall of the cover (C), thereby the insertion of the cover causes a compression of said polyurethane layer such as to improve the sealing.
Claim 6
Dependent Claim
49 words
A radiator according to the preceding claims, wherein said expanded polyurethane layer (P)is cast onto the base (B) of each manifold prior to the insertion of the cover (C) with the aid of a counter-mold formed from non-additivated polyurethane having a hardness in the 23 to 27 Shore range.
References Cited (Backward Citations)
No citation records indexed.
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