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US 4,227,379 AGranted
Cooling apparatus
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorToshiyuki Oonishi
Life of this patent
Estimating the term…
Abstract
A cooler for a freezing chamber of a cooling apparatus having a low temperature portion cooling region and a very low temperature portion cooling region. The frost is concentrated on the very low temperature portion, and there is no frost adhesion to the low temperature portion.
Claims10
A cooling apparatus comprising:
- a freezing chamber;
- a cold chamber;
- a compressor having an intake, a condenser, and a capillary tube, all connected in series
- a first coolant pipe for said freezing chamber, said first coolant pipe being connected in series with said compressor, condenser and capillary tube, said first coolant pipe forming a low temperature portion cooling region for said freezing chamber;
- a second coolant pipe for said freezing chamber, said second coolant pipe being connected in series with said first coolant pipe and being connected adjacent said compressor intake side thereof, said second coolant pipe forming a very low temperature portion cooling region for said freezing chamber;
- and
- a third coolant pipe for said cold chamber, said third coolant pipe being connected between, and in series with, said first and second coolant pipes,
- whereby said very low temperature portion is cooled to a lower temperature by said second coolant pipe than said low temperature region is cooled by said first coolant pipe.
5 more elements
A cooling apparatus comprising:
- a freezing chamber;
- a cold chamber;
- a compressor having an intake, a condenser, and a capillary tube, all connected in series
- a first coolant pipe for said freezing chamber, said first coolant pipe being connected in series with said compressor, condenser and capillary tube, said first coolant pipe forming a low temperature portion cooling region for said freezing chamber
- a second coolant pipe for said freezing chamber, said second coolant pipe being connected in series with said first coolant pipe and being connected adjacent said compressor intake side thereof, said second coolant pipe forming a very low temperature portion cooling region for said freezing chamber;
- a third coolant pipe for said cold chamber, said third coolant pipe being connected in series with first and second coolant pipes;
- and
- a parallel by pass in said series for said first and third coolant pipes,
- whereby coolant may by pass said first and third coolant pipes but not said second coolant pipe.
6 more elements
Dependencies are inferred from the claim text.