Discharge tube of hermetic compressor

• US 7,396,219 B2
• Filed: 02/16/2004
• Issued: 07/08/2008
• Est. Priority Date: 02/18/2003
• Status: Expired due to Fees

• Current Assignee: Empresa Brasileira de Compressores SA (Whirlpool Corporation)
• Original Assignee: Empresa Brasileria de Compressors S/A Embraco
• Inventors: Berwanger, Egidio
• Primary Examiner(s): Stashick; Anthony D.
• Assistant Examiner(s): Hamo; Patrick
• Application Number:
  US10/543,798
• Publication Number:
  US 20060110269A1
• Time in Patent Office: 1,604 Days
• Field of Search: 417/312, 417/902
• US Class Current: 417/312
• 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 is provided having a hermetic shell presenting a gas outlet and lodging a cylinder block in which is affixed, through screws, a cylinder head defining, internally, a gas discharge chamber, and a discharge tube presenting an inlet end in fluid communication with the gas discharge chamber through an orifice in the cylinder head, and an opposite end coupled to the gas outlet of the shell. The arrangement includes an electrically insulating discharge connector affixed to the cylinder head through one of the screws and receiving and securing the inlet end of the discharge tube.

Claims

1. A mounting arrangement for a discharge tube of a hermetic compressor, comprising:

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

a discharge tube presenting an inlet end in fluid communication with the gas discharge chamber through an orifice in the cylinder head, and an opposite end coupled to the gas outlet of the hermetic shell, wherein said discharge tube comprises

a discharge connector affixed to the cylinder head through one of the screws by which the cylinder head is affixed to the cylinder block, said discharge connector receiving and securing the inlet end of the discharge tube, and electrically insulating the discharge tube of the cylinder head.

2. The arrangement according to claim 1, wherein the discharge connector comprises a tubular body having a first end seated against the cylinder head, in order to have its interior maintained in fluid communication with the orifice of the cylinder head, and a second end against which is seated the head of said screw which is axially loosely disposed through the tubular body and through the orifice of the cylinder head, said tubular body being provided with a lateral opening in which is affixed the inlet end of the discharge tube, with the first and second end of the tubular body being electrically insulated from the adjacent parts defined by the cylinder head and the head of the screw, respectively.

3. The mounting arrangement according to claim 2, wherein the electric insulation between the tubular body and the parts defined by the cylinder head and the head of the screw is obtained by the provision of a washer made of an electric insulating material and which is provided between the first end of the tubular body and the cylinder head and between the second end of said tubular body and the head of the screw.

4. The mounting arrangement according to claim 3, wherein the washers are made of polyester.

5. The arrangement according to claim 1, wherein the screw by which the cylinder head is affixed to the cylinder block extends through the orifice in the cylinder head that is in fluid communication with the discharge tube via the gas discharge chamber.