The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 1990
Filed:
Feb. 01, 1989
Caio M Da Costa, Joinville, BR;
Empresa Brasiliera de Compressores, Joinville, BR;
Abstract
Patent of Invention for 'GAS AND OIL COOLING SYSTEM IN A HERMETIC COMPRESSOR' for small refrigeration machines of the type including an assembly wherein is defined a cylinder housing a piston driven from a crankshaft coupled to an electric motor and forming suction and compression chambers inside the cylinder, these elements being assembled inside a sealed shell acting as a lubricant oil sump and incorporating independent lubricant oil outlet and return tubes connected to a heat exchanger external to the shell. The system in question includes oil pumping means (20) assembled on the shaft (5) having its suction (24a) connected to the lubricant oil contained in the bottom of shell (1) and its discharge (24b) connected to the oil outlet tube (9a), the discharge (24b) of the oil pumping means (20) being maintained in fluid communication with the cylinder compression chamber (2) through a compressed refrigerant gas conduit (26a). Thus, the oil is drawn from the bottom of shell and pumped jointly with the refrigerant gas arriving to the pump discharge, through the heat exchanger (10) and returned to the inside of the shell (1).