EP0195486A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Hermetic motor-compressor unit for a refrigeration circuit
Assignee: Whirlpool International BV
•
Filing: 1986-03-18
•
Granted: —
•
Expires: 2006-03-18
Abstract
Abstract In a motor-compressor unit for a refrigerant circuit the suction or inlet plenum chamber (A) is made as a separate part (27) of a plastics material in order to reduce heat transfer from the cylinder head (17) to the suction chamber (A). Preferably, the suction chamber (27) is integrally formed with the inlet muffler (40). A further reduction of heat transfer to the refrigerant gas is obtained by an elastic connection (52) between the inlet conduit (60) and the inlet muffler (40).
Inventors
- 👤 Riccardo Bianchi
- 👤 Vittorio Bianchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:54
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/12; F04B39/125; F04B39/123
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
1 . A hermetic motor-compressor unit for a refrigeration circuit, said motor-compressed unit being mounted in a sealed outer casing and comprising an electric motor and a reciprocating compressor driven by said motor, said compressor having a metal cylinder head including a compression chamber, and having an inlet conduit rigidly connected to the outlet casing, an inlet muffler and a suction chamber, characterized in that the suction chamber is constructed as a separate part of a synthetic material having a low heat transfer coefficient and which is compatible with the refrigerant gas and the lubricating oil.
Claim 2
Dependent Claim
96 words
1 . A hermetic motor-compressor unit for a refrigeration circuit, said motor-compressed unit being mounted in a sealed outer casing and comprising an electric motor and a reciprocating compressor driven by said motor, said compressor having a metal cylinder head including a compression chamber, and having an inlet conduit rigidly connected to the outlet casing, an inlet muffler and a suction chamber, characterized in that the suction chamber is constructed as a separate part of a synthetic material having a low heat transfer coefficient and which is compatible with the refrigerant gas and the lubricating oil.
Claim 3
Dependent Claim
34 words
A motor-compressor unit as claimed in claim 1, characterized in that said part is formed by an appendix of the inlet muffler and is formed integrally with at least a part of said muffler.
Claim 4
Dependent Claim
34 words
A motor-compressor unit as claimed in claim 2, characterized in that the metal cylinder head comprises a slot into which said appendix can be inserted and which faces inlet ports of a valve plate.
Claim 5
Dependent Claim
40 words
A motor compressor unit as claimed in Claim 3, characterized in that the slot comprises undercuts and a flat spring is arranged between the undercuts and the appendix so as to urge this said appendix into position against the cylinder.
Claim 6
Dependent Claim
45 words
A motor-compressor unit as claimed in Claim 3, characterized in that the appendix which is inserted into the slot projects from the terminal face of the metal cylinder head and a spring mounted on a cylinder head pressing against the projecting part of the appendix.
Claim 7
Dependent Claim
40 words
A motor-compressor unit as claimed in any of the preceding claims, characterized in that the lower end of the muffler is closed by an elastic cap having a central hole in which the end of the inlet conduit is inserted.
Claim 8
Dependent Claim
30 words
A motor-compressor unit as claimed in any of claims 1 to 5, characterized in that the inlet muffler is connected to the inlet conduit by means of an elastic bellows.
Claim 9
Dependent Claim
42 words
A motor-compressor unit as claimed in any of claims 1 to 5, characterized in that the open lower end of the inlet muffler dips into a lubricant and the inlet conduit opens into the inlet muffler above the level of the lubricant.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.