Discharge tube of a hermetic compressor

• US 20060110269A1
• Filed: 02/16/2004
• Published: 05/25/2006
• Est. Priority Date: 02/18/2003
• Status: Active Grant

• Current Assignee: Empresa Brasileira de Compressores SA (Whirlpool Corporation)
• Original Assignee: Empresa Brasileria de Compressors S/A Embraco
• Inventors: Berwanger, Egidio
• Granted Patent: US 7,396,219 B2
• Time in Patent Office: Days
• US Class Current: 417/415
• CPC Class Codes: F04B 39/023 Hermetic compressors
• CPC Class Codes: F04B 39/123 Fluid connections
• CPC Class Codes: Y10S 181/403 Refrigerator compresssor muffler
• CPC Class Codes: Y10S 417/902 Hermetically sealed motor pump unit

Abstract

A mounting arrangement for a discharge tube of a hermetic compressor of the type which comprises: a hermetic shell (1) presenting a gas outlet (1a) and lodging a cylinder block (10) in which is affixed, through screws (8a), a cylinder head (8) defining, internally, a gas discharge chamber, and a discharge tube (9) presenting an inlet end (9a) in fluid communication with the gas discharge chamber through an orifice (8b) in the cylinder head (8), and an opposite end (9b) coupled to the gas outlet (1a) of the shell (1), said arrangement comprising an electrically insulating discharge connector (40) affixed to the of the screws (8a) and receiving and securing the inlet end (9a) of the discharge tube (9).

Claims

1. A mounting arrangement for a discharge tube of a hermetic compressor of the type which comprises:

a hermetic shell (1) presenting a gas outlet (1a) and lodging a cylinder block (10) to which is affixed, through screws (8a), a cylinder head (8) defining, internally, a gas discharge chamber; and

a discharge tube (9) presenting an inlet end (9a) in fluid communication with the gas discharge chamber through an orifice (8b) in the cylinder head (8), and an opposite end (9b) coupled to the gas outlet (1a) of the hermetic shell (1), characterized in that it comprises a discharge connector (40) affixed to the cylinder head (8) through one of the screws (8a) and receiving and securing the inlet end (9a) of the discharge tube (9), said discharge connector (40) electrically insulating the discharge tube (9) of the cylinder head (8).

2. The arrangement as set forth in claim 1, characterized in that the discharge connector (40) comprises a tubular body (41) having a first end seated against the cylinder head (8), in order to have its interior maintained in fluid communication with the orifice (8b) of the cylinder head (8), and a second end against which is seated the head of said screw (8a) which is axially loosely disposed through the tubular body (41) and through the orifice (8b) of the cylinder head (8), said tubular body (41) being provided with a lateral opening (42) in which is affixed the inlet end (9a) of the discharge tube (9), with the first and second end of the tubular body (41) being electrically insulated from the adjacent parts defined by the cylinder head (8) and the head of the screw (8a), respectively.

3. The arrangement as set forth in claim 2, characterized in that the electric insulation between the tubular body (41) and the parts defined by the cylinder head (8) and the head of the screw (8a) is obtained by the provision of a washer (43a, 43b) made of an electric insulating material and which is provided between the first end of the tubular body (41) and the cylinder head (8) and between the second end of said tubular body (41) and the head of the screw (8a).

4. The arrangement as set forth in claim 3, characterized in that the washers (43a and 43b) are made of polyester.