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US 5,118,260 AGranted
Scroll compressor protector
AssigneeCarrier Corporation
InventorHoward H. Fraser, Jr.
Life of this patent
Estimating the term…
Abstract
The motor protector for a motor is located so as to be responsive to the discharge temperature of a compressor. The protector is thereby responsive to motor current and compressor discharge temperature. Additionally, by conduction, the protector is responsive to the motor temperature. For scroll compressors, specifically, this provides protection from excess heating of the scroll wraps without requiring an additional sensor.
Claims3
A low side hermetic compressor means comprising:
- shell means;
- separating means coacting with said shell means to divide said shell means into a first and a second portion;
- said first portion containing running gear means and motor means for driving said running gear means whereby refrigerant gas is heated and pressurized and passes from said running gear means into said second portion via a discharge path;
- means for supplying electrical power through said shell means to said motor means;
- thermally responsive protector means responsive to an overcurrent in said motor means and located in said second portion in proximity with said discharge path and electrically connected to said motor means whereby said protector means is responsive to an overcurrent in said motor means as well as an overtemperature in said discharge path to cause said motor means to be disabled.
2 more elements
Dependencies are inferred from the claim text.