US4169360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant compressors for automotive air conditioning refrigerating systems
Assignee: Sanden Corp
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Filing: 1978-05-16
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Granted: 1979-10-02
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Expires: 1998-05-16
Abstract
Abstract A refrigerant compressor for use in an automotive air conditioning refrigerating system is provided with an electromagnetic clutch and an AC electric generator assembled on the compressor. The electromagnetic clutch comprises a pulley rotatably mounted on the compressor housing to be driven by the engine of the car, a magnetic attracting surface, and a magnetic armature connected to a drive shaft of the compressor to be magnetically attracted to the magnetic attracting surface to selectively drive the compressor by the engine. The AC electric generator comprises a stator statically mounted on the compressor housing and a rotor mounted on the pulley. One of the stator and the rotor includes concentric magnetic pole pieces of permanent magnets or of electromagnets, and the other of the stator and rotor includes a coil member to which AC current is induced upon the rotation of the rotor together with the pulley. Electric power is obtained from the AC electric generator to compensate for the power consumption of the car battery in the use of the air conditioning refrigerating system.
Inventors
- 👤 Hideaki Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:47
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3222; H; H02; H02K; H02K19/00; H02K19/16; H02K19/22; H02K21/00; H02K21/12; H02K21/22; H02K21/227; H02K7/00; H02K7/10; H02K7/108; H02K7/1085; F16D2027/002; F16D2027/005; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
230 words
A refrigerant compressor having an electromagnetic clutch for use in an automotive air conditioning refrigerating system, said compressor comprising: a compressor body including a compressor housing, a rotatable shaft protruding from said compressor housing for driving a compressor piston within said compressor housing, and a sleeve extending from said compressor housing surrounding and concentric with said shaft; an electromagnetic clutch device comprising a rotating member rotatably mounted on said sleeve and adapted to be driven by an automobile engine, said rotating member being provided with magnetic attraction surface, a magnetic armature connected to said shaft and magnetically associated with said magnetic attraction surface, and electromagnetic means associated with said rotating element for attracting said armature to said magnetic attraction surface to transmit the rotating force of said rotating member to said shaft; and an AC electric generator device comprising a rotor member mounted on said rotating member, and a stator member statically mounted on said compressor housing, one of said rotor member and said stator member being provided with magnetic pole pieces facing the other of said rotor member and said stator member with a gap arranged such that each two adjacent magnetic pole pieces are different in magnetic polarity from one another, and the other of said rotor member and said stator member including coil means in which electric currents are induced upon the rotation of said rotor member.
Claim 2
Dependent Claim
230 words
A refrigerant compressor having an electromagnetic clutch for use in an automotive air conditioning refrigerating system, said compressor comprising: a compressor body including a compressor housing, a rotatable shaft protruding from said compressor housing for driving a compressor piston within said compressor housing, and a sleeve extending from said compressor housing surrounding and concentric with said shaft; an electromagnetic clutch device comprising a rotating member rotatably mounted on said sleeve and adapted to be driven by an automobile engine, said rotating member being provided with magnetic attraction surface, a magnetic armature connected to said shaft and magnetically associated with said magnetic attraction surface, and electromagnetic means associated with said rotating element for attracting said armature to said magnetic attraction surface to transmit the rotating force of said rotating member to said shaft; and an AC electric generator device comprising a rotor member mounted on said rotating member, and a stator member statically mounted on said compressor housing, one of said rotor member and said stator member being provided with magnetic pole pieces facing the other of said rotor member and said stator member with a gap arranged such that each two adjacent magnetic pole pieces are different in magnetic polarity from one another, and the other of said rotor member and said stator member including coil means in which electric currents are induced upon the rotation of said rotor member.
Claim 3
Dependent Claim
42 words
The refrigerant compressor of claim 1, in which said magnetic pieces comprise a plurality of permanent magnet elements arranged to form an annulus, the magnetic pole directions of adjacent pairs of said permanent magnet elements being disposed radially opposite to one another.
Claim 4
Dependent Claim
29 words
The refrigerant comprssor of claim 2, in which said coil means comprises an annular core including first and second annular yokes and an annular coil wound on said core.
Claim 5
Dependent Claim
52 words
The refrigerant compressor of claim 3, in which each of said first and second yokes includes a plurality of axial projections that extend radially beyond said coil, the axial projections of said first yoke being disposed between adjacent ones of said axial projections on said second yoke to form air gaps therebetween.
Claim 6
Dependent Claim
57 words
The refrigerant compressor of claim 1, in which said coil means comprises a ring core having a plurality of radial projections, and a plurality of coils respectively wound on said projections, said coils being connected in series, and means connected to the opposite ends of said series-connect coils for taking out AC current induced in said coils.
Claim 7
Dependent Claim
81 words
The refrigerant compressor of claim 1, in which said magnetic pieces comprise an electromagnet device comprising an annular core formed with first and second annular yokes, an annular coil wound on said core, each of said yokes including a plurality of axial projections extending over said coil, said axial projections of one of said first and second yokes being disposed between adjacent pairs of said axial projections of the other of said first and second yokes and establishing air gaps therebetween.
Claim 8
Dependent Claim
21 words
The compressor of claim 6, further comprising brush means for applying electrical power from the car battery to said annular coil.
Claim 9
Dependent Claim
72 words
The compressor of claim 6, in which said coil means includes a coil device surrounding said electromagnet device and secured to said compressor housing, said coil device comprising a ring core having a plurality of radial outer projections, a plurality of coils respectively wound on said radial projections and connected in series, and means connected to the ends of said series-connected coils for taking out the AC current induced in said coils.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |