Pumps – Motor driven – Resiliently mounted pump or motor
Patent
1991-04-18
1993-07-20
Bertsch, Richard A.
Pumps
Motor driven
Resiliently mounted pump or motor
417372, 184 618, F04B 3504
Patent
active
052288439
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase application of PCT/RO 90/00002 filed 21 Sep. 1990 and based, in turn, on a Romanian application No. 141894 of 6 Oct. 1989 under the International Convention.
FIELD OF THE INVENTION
The invention relates to a compressor for domestic refrigerators completely enclosed and functioning with Freon.
According to the invention, the compressor for domestic refrigerators is provided with a hollow body, so disposed that a circular hole of it, through which it enters in the cylinder subassembly, the working fluid is arranged in line with a tube through which the fluid vapor is delivered from the evaporator and has springs mounted on the bottom of the housing and an oil pump formed in the shaft.
This structure is designed, to increase the storage space in the cabinet, as well as to enhance the refrigerating efficiency, positively affecting the power consumption.
BACKGROUND OF THE INVENTION
Compressors for domestic refrigerators functioning with Freon and provided with a housing are known. Inside the housing there is an electric motor provided with a shaft entraining an eccentric which, in turn, entrains a piston inside a cylinder subassembly.
The Freon, which is the working agent, is conducted along a tube that enters a body supporting the whole assembly.
The lubrication is obtained by a pump entrained by a shaft, and the suspension of the assembly inside the housing is realized by springs arranged radially or perpendicular to the horizontal plane and fitting in lugs fixed on the housing and on the respective assembly.
The supply of energy is performed through a three-pole terminal disposed near the suction tube conducting the working agent from the evaporator.
These compressors have the following disadvantages, the fitting of suspension springs of the compressor assembly, requiring the use of inner lugs, leads to a larger size of the housing; and the mounting of the suction tube through which the cold vapor of the working fluid enters, leads to the heating of the vapor and implicitly to the diminution of the volumetric efficiency of the compressor.
Further the oil pump, and its pallet, are attached by pressing which does not secure a reliable contact therebetween. Also the total capacity of the pump is low.
Still another disadvantage is the tube, through which the suction of the working agent in the cylinder subassembly is conducted, the manner of suspension, the large clearance between the moving parts, and their weight, leading to a high noise level.
OBJECTS OF THE INVENTION
It is therefore the principal object of the present invention to provide a domestic refrigerator with a high efficiency and of better power consumption.
SUMMARY OF THE INVENTION
A compressor for domestic refrigerators, according to the invention has smaller dimensions compared with known compressors by reorganizing its interior subassemblies, by mounting of a new oil pump and by redesigning of the shaft on which the pump is set as well as by fitting a suction body for receiving the working agent directly from the evaporator on the cylinder. In this case the vapors are cold, with a small specific volume, and the oil pump can be reliable and have a high pumping efficiency.
According to the invention, the compressor for domestic refrigerators has an electric motor that, by means of a shaft and an eccentric, entrains a piston gliding in a cylinder subassembly. Such a structure eliminates the mentioned disadvantages of the prior art and solves the problem by the fact that the structure is provided with a hollow body disposed so that a circular hole of the body, through which the working fluid enters the cylinder subassembly is aligned with a tube bringing vapor from the evaporator. A three-pole terminal for distributing energy is disposed opposite to the tube. The motor is supported on springs mounted on the bottom of the housing and has an oil pump mounted in the shaft by a ring, fitted in a tapered circular groove.
BRIEF DESCRIPTION OF THE DRAWING
The above
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patent: 4793775 (1988-12-01), Peruzzi
Bordea Dumitru
Nistor Petru
Novolan Traian
Paulescu Ioan
Sandu Matei
Bertsch Richard A.
Dubno Herbert
Freay Charles G.
Intreprinderea de Frigidere Gaesti
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