Claims
- 1. A high-efficiency integrated evaporator fan motor and control assembly particularly adapted for use in refrigeration equipment to circulate air within a refrigerated space comprising:an electronically commutated DC motor; a circuit board including a plurality of electronic components and interconnections therebetween; said electronically commutated motor including a stator core, a permanent magnet rotor and at least one winding magnetically coupled to said stator core; a housing having means for positioning and supporting said motor and electronic components; a sensor, for sensing rotation of said rotor, connected in circuit with the interconnections of said circuit board and positioned in magnetic coupling relationship with said permanent magnet rotor; said electronic components including a DC power supply, and switching means to provide power from said DC power supply to said at least one winding in response to signals from said Hall device; said stator core being of the C-frame type; and said rotor including means for surrounding and containing the permanent magnets.
- 2. The motor and control assembly of claim 1 wherein the housing includes an opening enabling an edge connector plug to pass therethrough for contact with conductors on said circuit board.
- 3. A motor and control assembly comprising:an electronically commutated DC motor; said electronically commutated motor including a stator core, a permanent magnet rotor and at least one winding magnetically coupled to said stator core; a Hall sensor, for sensing rotation of said rotor, positioned in magnetic coupling relationship with said permanent magnet rotor; said assembly including electronic components, a DC power supply, and switching means for delivering power from said DC power supply to said at least one winding in response to signals from said Hall sensor; said control assembly also including means for pulsing energizing power supplied to said Hall device when said at least one winding is energized thereby to decrease the usage of such energizing power and to increase the efficiency of said assembly; said rotor including a plurality of arcuate magnetic segments secured to a cylindrical core; and an enclosure surrounding said magnetic segments and said cylindrical core.
- 4. The motor and control assembly of claim 3 wherein said enclosure includes an interference fit metallic cup positioned over said magnetic segments and said cylindrical core, and a metallic end plate, with the rim of the open end of said cup extending beyond and rolled over said end plate to secure the magnet segments between the closed end of said cup and said end plate.
Parent Case Info
This is a division of application Ser. No. 07/863,900 filed Apr. 6, 1992.
US Referenced Citations (55)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0458211 |
Nov 1991 |
EP |
60121988 |
Jun 1985 |
JP |
61218391 |
Sep 1986 |
JP |