AU672434B2 - Refrigeration compressor - Google Patents

Description

OPI DATE 21/11/94 AOJP DATE 05/01/95 APPLN, ID 49364/93IIiiII1111Ilitliiii PCT NUMBER PCT/AU93/004601111 I11111111II N AUW349364

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(SI)Intrnatona Patnt lassfict~on~ International Publication Number; WO 94/25807 3 1/02, H02K 5/128 (43) International Publication Date: 10 November 1994 (10.11 94) (21) International Application Number: (22) International Filing Date: 9 S Priority Data: PL. 8486 28 April 195 PL 8675 4 May 1993 PCT/AU93/00460 ptember 1993 (09.09.93) (81) Designated States: AT, AU, BB, BG, BR, BY, CA, CH, CZ, DE, DK, ES, FL, GB, HU, JP, KP, KR, KZ, LK. LU, LV, MG, MN, MW NL, NO, NZ, PL, PT, RO, RU, SD, SE, SIC, UA, US, VN, European patent (AT, BE, CH, DE, DK, ES, FR, GB, GR, EE, IT, LU, MC, NL, PT, SE), QAPI patent (BF, Bj, CF, CG, C1, CM, GA, GN, ML, MR, NE, SN, TD. TG). ?3 (28.064.93) (04.05.93) Published (71)(72) Applicant and Inventor: NOJA, Elias [AU/AU]; 7 Singleton Crescent, Oxley, ACT 2903 (AU).

(74) Agent: RAINEY, David. Thomson Pizzey, P.O. Box 291, Woden, ACi"2606 (AU).

(54) Title: REFRIGERATION COMPRESSOR (57) Abstract The refrigeration compressor assembly (84) includes a housing (77) having input means (79) for receiving refrigerant for compression and output means (SO) for reasrning compressed refrigerant; compressor means (74) mounted in the housing. input connection means (85) for connecting the input means to the compressor input, and output connection means (83) for connecting the output means to the compressor output~ the compressor means, input connection means and output connection means constituting a sealed refrigerant unit within the housing.

tih international scorch report.

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Claims (12)

1. 2. A refrigeration compressor assembly as claimed in claim 1, wherein said isolating means includes a sealed refrigerant unit within said housing.
2. 3. A refrigeration compressor assembly as claimed in claim 2, wherein said compressor means, said input refrigerant circuit and said output refrigerant circuit constitute said sealed refrigerant unit.
3. 4. A refrigeration compressor assembly as claimed in claim 3, wherein said input refrigerant circuit includes an expansion chamber within said housing, -!,aid expansion chamber including said input means and an expansion chamber Pi UBOTUTE SHEET [N BY: A IPO P. C, T. (A SENT 4YAW P.C:T ;A 11~v 4i iiV It 09neva CH-tX 81 9 RECEIVED 04 MAR 1994 P/AU 9 n f n outlet in sealed fluid communication with said compressor means. A refrigeration compressor assembly as claimed in claim 4, wherein said expansion chamber includes a sump and said expansion chamber outlet is adapted to drain said sump.
4. 6. A refrigeration compressor assembly as claimed in any one of the preceding claims, wherein said isolating means forms with said housing a sealed unit about said compressor means and said rotor.
5. 7. A refrigeration compressor assembly as claimed in claim 6, wherein said stator is supported by said housing to enclose said isolation assembly.
6. 8. A refrigeration compressor assembly as claimed in claim 7, wherein said housing includes mounting means for mounting the statcr of said electric motor to enclose said isolation assembly.
7. 9. A refrigeration compressor assembly as claimed in claim 8, wherein said cylinder is closed at one end thereof and open at the other end for receiving said rotor therein, said cylinder being adapted to abut said stator to form an extension thereof, the gap between said rotor and the inner surface of said cylinder constituting an airgap for said electric motor.
8. 10. A refrigeration compressor assembly as claimed in claim 9, wherein said isolation assembly includes mounting means adjacent said open end for mounting said cylinder relative to said stator and said rotor.
9. 11. A refrigeration compressor assembly as claimed in claim 10, wherein said mounting means are adapted to mount said cylinder in said housing to extend outwardly thereof. 1- 7 AMMEBND SHEET U fiPAAU (7 4 SEN BY.AlO P.C.T. IAU) 13- 4-Za4 11. 1. AirU- Uaneva CHr 9' 0 "ECEIVED 0 4 MAR 1994 PCrYAU 93 004 6 0 16
10. 12. A refrigeration compressor assembly as claimed in claim 11, wherein said isolation assembly includes bearing means on the inner surface of the closed end of said cylinder for supporting the shaft of said rotor.
11. 13. An electric motor-driven refrigeration compressor assembly including an isolation assembly adapted to abut the stator of the electric motor to form an extension thereof, said isolation assembly including:- a substantially rigid cylinder closed at one end thereof and open at the other end for receiving said rotor therein, the gap between the rotor and the inner surface of the cylinder constituting an airgap for the electric motor, said cylinder including alternating longitudinally extending strip-like portions of ferro-magnetic material and non-magnetic material, said longitudinally extending strip-like portions of ferro-magnetic material being adapted to juxtapose the pole pieces of said stator when said stator is positioned about said cylinder; and mounting means adjacent said open end for mounting said cylinder relative to said stator and said rotor.
12. 14. An electric motor for driving a refrigeration compressor assembly, said motor including:- a stator; a rotor, and an isolation assembly adapted to abut said stator to form an extension thereof and including a substantially rigid cylinder closed at one end thereof and open at the other end for receiving said rotor therein, said cylinder including alternating longitudinally extending strip-like portions of ferro-magnetic material and non-magnetic material, said longitudinally extending strip-like portions of ferro-magnetic material being adapted to juxtapose the pole pieces of said stator when said stator is positioned about said cylinder; wherein the gap between said rotor and the inner surface of said cylinder constitutes an airgap for the electric motor. SAMBND=D SHBBT r ^IPBA/AU