REFRIGERANT COMPRESSOR WITH OVERLOAD PROTECTOR
First Claim
1. A compressor for a refrigeration system comprising:
- a. a sealed housing having a compressor unit compartment in the lower portion and a motor compartment in the upper portion thereof;
b. a compressor unit disposed within said compressor unit compartment of said housing;
c. a motor disposed in said motor compartment of said housing and connected in driving relation ship with said compressor unit;
i. said motor comprising a rotor, ii. and a stator provided with a winding having a bottom portion positioned adjacent to the bottom of said motor compartment;
d. a compressor inlet for introducing refrigerant gas discharged from the refrigeration system into said compressor unit;
e. conduit means for providing a path for the flow of compressed refrigerant gas from said compressor unit into said motor compartment;
f. a housing outlet providing for the discharge of compressed refrigerant gas from said housing back to said refrigeration system;
g. and thermally operated switch means mounted adjacent to the bottom of said motor compartment and connected in electric circuit with said motor for disconnecting said motor from a source of potential when said switch means senses a temperature above a preselected value.
0 Assignments
0 Petitions
Accused Products
Abstract
A compressor having a sealed housing provided with a bottom compressor unit compartment and an upper motor compartment. A compressor unit is received in the bottom compartment and a motor is received in the motor compartment for driving the unit. The motor comprises a rotor and a stator having a winding the bottom portion of which is positioned adjacent to the bottom of the motor compartment. Connected to the compressor unit is an inlet for the flow of low pressure refrigerant gas discharged from the refrigerator system. A desuperheating coil provides a conduit for the flow of compressed refrigerant gas from the compressor unit back to the housing where the cooled gas enters at a point adjacent to the bottom of the motor compartment. Mounted on the bottom portion of the stator winding and positioned in the path of flow of the gas from the desuperheating coil is a thermostatic switch which is serially connected with the motor and its source of energy. The switch is operable to disconnect the motor from its energy source when the switch senses a combined temperature and current above a preselected value indicative of a motor overload.
45 Citations
6 Claims
-
1. A compressor for a refrigeration system comprising:
- a. a sealed housing having a compressor unit compartment in the lower portion and a motor compartment in the upper portion thereof;
b. a compressor unit disposed within said compressor unit compartment of said housing;
c. a motor disposed in said motor compartment of said housing and connected in driving relation ship with said compressor unit;
i. said motor comprising a rotor, ii. and a stator provided with a winding having a bottom portion positioned adjacent to the bottom of said motor compartment;
d. a compressor inlet for introducing refrigerant gas discharged from the refrigeration system into said compressor unit;
e. conduit means for providing a path for the flow of compressed refrigerant gas from said compressor unit into said motor compartment;
f. a housing outlet providing for the discharge of compressed refrigerant gas from said housing back to said refrigeration system;
g. and thermally operated switch means mounted adjacent to the bottom of said motor compartment and connected in electric circuit with said motor for disconnecting said motor from a source of potential when said switch means senses a temperature above a preselected value.
- a. a sealed housing having a compressor unit compartment in the lower portion and a motor compartment in the upper portion thereof;
-
2. A compressor as in claim 1, in which said switch means is mounted on the bottom portion of said stator winding in heat exchanging relationship therewith.
-
3. A compressor as in claim 2, in which said conduit means comprises a desuperheater coil having an inlet opening connected with said compressor unit and an outlet opening positioned adjacent to said bottom portion of said stator winding.
-
4. A compressor as in claim 3, in which said switch means comprises a thermostatic switch positioned in the path of flow of compressed refrigerant gas from said desuperheater coil outlet opening.
-
5. A compressor as in claim 4, in which said housing comprises a discharge tube in the upper portion of said housing for discharging compressed refrigerant gas back into the refrigeration system, whereby compressed refrigerant gas flows upwardly over said motor.
-
6. A compressor as in claim 1, in which said switch means generates heat in accordance with the motor current flowing therethrough, and said switch means senses temperatures due to the heat generated by the current flowing therethrough and the heat of said stator winding.
Specification