Pumps – Condition responsive control of pump drive motor – Responsive to pump or pump fluid temperature
Patent
1993-06-25
1996-04-23
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
Responsive to pump or pump fluid temperature
417 18, 361 26, F04B 4910, H02H 504
Patent
active
055097863
ABSTRACT:
A structure for mounting a thermal protector in a hermetic refrigeration compressor including an electric motor and a compressing means enclosed in a housing with refrigerant is disclosed. The housing has at least one through hole. The structure includes a terminal assembly airtightly secured in the hole of the housing. The terminal assembly includes a metal base and a plurality of electrically conductive terminal pins secured to the metal base by an electrically insulative material with small thermal conductivity. The structure further includes a thermal protector including a hermetic casing, a thermally responsive element disposed in the casing to be in direct contact with an inner wall of the casing at one side, and a contact mechanism. The thermal protector is mounted on a plurality of connection terminals connected to respective ends of the terminal pins located inside the compressor housing so as to be subjected to heat from at least one of the motor, compressing means and the refrigerant, so that the thermal protector is positioned to occupy a predetermined position.
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Kimura Shigeo
Koseki Hideki
Mizutani Yasukazu
Bertsch Richard A.
Thai Xuan M.
Ubukata Industries Co., Ltd.
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