COMPRESSOR SYSTEMS AND METHODS FOR USE BY VEHICLE HEATING, VENTILATING, AND AIRCONDITIONING SYSTEMS

Abstract

A compressor system for a vehicle comprising a vehicle internal combustion engine and a vehicle heating and cooling system. The compressor system comprising a compressor/motor generator defining a compressor motor/generator shaft, a compressor mechanically connected to the compressor motor/generator shaft; and a engine clutch mechanically connected to the compressor motor/generator shaft and to the vehicle internal combustion engine.

Claims

1. A compressor system for a vehicle comprising a vehicle internal combustion engine, a vehicle heating and cooling system, and a DC bus, the compressor system comprising: a compressor motor/generator defining a compressor motor/generator shaft; a compressor mechanically connected to the compressor motor/generator shaft; and an engine clutch mechanically connected to the compressor motor/generator shaft and to the vehicle internal combustion engine.

2. A compressor system as recited in claim 1, in which: when the engine clutch operatively connects the compressor motor/generator shaft to the vehicle internal combustion, the vehicle internal combustion engine operates the compressor motor/generator such that the compressor motor/generator applies power to the DC bus; and when the engine clutch disconnects the compressor motor/generator shaft from the vehicle internal combustion, the compressor motor/generator operates the compressor based on power from the DC bus.

3. A compressor system as recited in claim 1, further comprising an auxiliary power supply system operatively connected to the DC bus.

4. A compressor system as recited in claim 1, further comprising a compressor clutch operatively connected between the compressor motor/generator shaft and the compressor.

5. A compressor system as recited in claim 1, in which the compressor forms part of a heat pump system used by the vehicle heating and cooling system.

6. A compressor system as recited in claim 5, further comprising an auxiliary power supply system operatively connected to the DC bus.

7. A heat pump method for a vehicle comprising a vehicle internal combustion engine, a vehicle heating and cooling system, and a DC bus, the method comprising the steps of: providing a compressor motor/generator defining a compressor motor/generator shaft; mechanically connecting a compressor to the compressor motor/generator shaft; mechanically connecting an engine clutch to the compressor motor/generator shaft and to the vehicle internal combustion engine; and operatively connecting the compressor to a condenser coil, an expansion valve, and an evaporator coil to form the heat pump system.

8. A method as recited in claim 7, further comprising the steps of: causing the vehicle internal combustion engine to operate the compressor motor/generator such that the compressor motor/generator applies power to the DC bus when the engine clutch operatively connects the compressor motor/generator shaft to the vehicle internal combustion; and causing the compressor motor/generator to operate the compressor based on power from the DC bus when the engine clutch disconnects the compressor motor/generator shaft from the vehicle internal combustion.

9. A method as recited in claim 7, further comprising the step of operatively connecting an auxiliary power supply system to the DC bus.

10. A method as recited in claim 7, further comprising the step of operatively connecting a compressor clutch between the compressor motor/generator shaft and the compressor.

11. A method as recited in claim 10, further comprising the step of operatively connecting an auxiliary power supply system to the DC bus.

12. A vehicle heating and cooling system for a vehicle comprising a vehicle internal combustion engine and a DC bus, the vehicle heating and cooling system comprising: a heat pump system comprising a compressor, a condenser coil, an expansion valve, and an evaporator coil; a compressor motor/generator defining a compressor motor/generator shaft, where the compressor is mechanically connected to the compressor motor/generator shaft; and an engine clutch mechanically connected to the compressor motor/generator shaft and to the vehicle internal combustion engine.

13. A heating and cooling system as recited in claim 12, in which: when the engine clutch operatively connects the compressor motor/generator shaft to the vehicle internal combustion, the vehicle internal combustion engine operates the compressor motor/generator such that the compressor motor/generator applies power to the DC bus; and when the engine clutch disconnects the compressor motor/generator shaft from the vehicle internal combustion, the compressor motor/generator operates the compressor based on power from the DC bus.

14. A heating and cooling system as recited in claim 12, further comprising an auxiliary power supply system operatively connected to the DC bus.

15. A heating and cooling system as recited in claim 12, further comprising a compressor clutch operatively connected between the compressor motor/generator shaft and the compressor.

16. A heating and cooling system as recited in claim 12, in which the compressor forms part of a heat pump system used by the vehicle heating and cooling system.

17. A heating and cooling system recited in claim 16, further comprising an auxiliary power supply system operatively connected to the DC bus.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0003] FIG. 1 is a schematic block diagram illustrating a first example vehicle heating, ventilating, and air conditioning system comprising a first example compressor system of the present invention;

[0004] FIG. 2 is a schematic block diagram illustrating a second example vehicle heating, ventilating, and air conditioning system comprising a second example compressor system of the present invention;

[0005] FIG. 3 is a schematic block diagram illustrating a third example vehicle heating, ventilating, and air conditioning system comprising a third example compressor system of the present invention;

[0006] FIG. 4 is a schematic block diagram illustrating a fourth example vehicle heating, ventilating, and air conditioning system comprising a fourth example compressor system of the present invention;

[0007] FIG. 5 is a schematic block diagram illustrating a fifth example vehicle heating, ventilating, and air conditioning system comprising a fifth example compressor system of the present invention; and

[0008] FIG. 6 is a schematic block diagram illustrating a sixth example vehicle heating, ventilating, and air conditioning system comprising a sixth example compressor system of the present invention.

DETAILED DESCRIPTION

[0009] The present invention may take a number of different forms, and several examples of the present of the present invention will be discussed separately below.

I. FIRST EXAMPLE

[0010] Referring initially to FIG. 1 of the drawing, depicted therein is a first example vehicle heating, ventilating, and air conditioning system 20 comprising a first example compressor system 22. The first example compressor system 22 comprises a compressor motor/generator 30 mechanically connected to a compressor 32 and a vehicle internal combustion engine 34 through an engine clutch 36. The compressor system 22 that can be operated in a first mode in which the compressor motor/generator 30 mechanically engages and operates the compressor 32 and in a second mode in which the compressor motor/generator 30 generates electricity based on operation of the vehicle internal combustion engine 34. The engine clutch 36 mechanically disengages a compressor motor/generator shaft 38 from the vehicle combustion engine 34 in the first mode and mechanically engages the compressor motor/generator shaft 38 with the vehicle combustion engine 34 in the second mode.

[0011] The first example compressor system 22 forms a part of a heat pump system 40 further comprising a condenser coil 42, an expansion valve 44, and an evaporator coil 46. In addition to the first example compressor system 22, the first example vehicle heating, ventilating, and air conditioning system 20 further comprises an HVAC controller 50, a fan 52, and a HVAC user interface 54. The vehicle internal combustion engine 34 is mechanically connected to a vehicle charging system 60, and the vehicle charging system 60 supplies power to a vehicle battery 62 through a DC bus 64. Power to the compressor motor/generator 30 and the fan 52 may also be supplied from the vehicle charging system 30 through the DC bus 64. Electrical power generated by the compressor/motor generator 30 in the second mode may be supplied to the DC bus 64.

II. SECOND EXAMPLE

[0012] Referring now to FIG. 2 of the drawing, depicted therein is a second example vehicle heating, ventilating, and air conditioning system 120 comprising a second example compressor system 122. The second example compressor system 122 comprises a compressor motor/generator 130 mechanically connected to a compressor 132 and a vehicle internal combustion engine 134 through an engine clutch 136. The second example compressor system 122 can be operated in a first mode in which the compressor motor/generator 130 mechanically engages and operates the compressor 132 and in a second mode in which the compressor motor/generator 130 generates electricity based on operation of the vehicle internal combustion engine 134. The engine clutch 136 mechanically disengages a compressor motor/generator shaft 138 from the vehicle combustion engine 134 in the first mode and mechanically engages the compressor motor/generator shaft 138 with the vehicle combustion engine 134 in the second mode.

[0013] The second example compressor system 122 forms a part of a heat pump system 140 further comprising a condenser coil 142, an expansion valve 144, and an evaporator coil 146. In addition to the second example compressor system 122, the second example vehicle heating, ventilating, and air conditioning system 120 further comprises an HVAC controller 150, a fan 152, and a HVAC user interface 154. The vehicle internal combustion engine 134 is mechanically connected to a vehicle charging system 160, and the vehicle charging system 160 supplies power to a vehicle battery 162 through a DC bus 164. Power to the compressor motor/generator 130 and the fan 152 may also be supplied from the vehicle charging system 130 through the DC bus 164. Electrical power generated by the compressor/motor generator 130 in the second mode may be supplied to the DC bus 164.

[0014] The second example vehicle heating, ventilating, and air conditioning system 120 further comprises an auxiliary power supply system 170 comprising an auxiliary battery 172, an auxiliary disconnect switch 174, and a vehicle disconnect switch 176. The second example vehicle heating, ventilating, and air conditioning system 120 may be operated based on electrical power generated by any one or any combination of the vehicle charging system 160, the vehicle battery 162, and the auxiliary battery 164 when the vehicle internal combustion engine 134 is not operating.

III. THIRD EXAMPLE

[0015] Referring next to FIG. 3 of the drawing, depicted therein is a third example vehicle heating, ventilating, and air conditioning system 220 comprising a third example compressor system 222. The third example compressor system 222 comprises a compressor motor 230 mechanically connected to a compressor 232 and a vehicle internal combustion engine 234 through an engine clutch 236. The compressor system 222 that can be operated in a first mode in which the compressor motor 230 mechanically engages and operates the compressor 232 and in a second mode in which the vehicle internal combustion engine 234 ally engages and operates the compressor 232 through the engine clutch 236. The engine clutch 236 mechanically disengages a compressor motor/generator shaft 238 from the vehicle combustion engine 234 in the first mode and mechanically engages the compressor motor/generator shaft 238 with the vehicle combustion engine 234 in the second mode.

[0016] The third example compressor system 222 forms a part of a heat pump system 240 further comprising a condenser coil 242, an expansion valve 244, and an evaporator coil 246. In addition to the third example compressor system 222, the third example vehicle heating, ventilating, and air conditioning system 220 further comprises an HVAC controller 250, a fan 252, and a HVAC user interface 254. The vehicle internal combustion engine 234 is mechanically connected to a vehicle charging system 260, and the vehicle charging system 260 supplies power to a vehicle battery 262 through a DC bus 264. Power to the compressor motor 230 and the fan 252 may also be supplied from the vehicle charging system 230 through the DC bus 264. Electrical power generated by the compressor/motor generator 230 in the second mode may be supplied to the DC bus 264.

IV. FOURTH EXAMPLE

[0017] Referring now to FIG. 4 of the drawing, depicted therein is a fourth example vehicle heating, ventilating, and air conditioning system 320 comprising a fourth example compressor system 322. The fourth example compressor system 322 comprises a compressor motor 330 mechanically connected to a compressor 332 and a vehicle internal combustion engine 334 through an engine clutch 336. The fourth example compressor system 322 can be operated in a first mode in which the compressor motor 330 mechanically engages and operates the compressor 332 and in a second mode in which the vehicle internal combustion engine 334 mechanically engages and operates the compressor 332 through the engine clutch 336. The engine clutch 336 mechanically disengages a compressor motor shaft 338 from the vehicle combustion engine 334 in the first mode and mechanically engages the compressor motor shaft 338 with the vehicle combustion engine 334 in the second mode.

[0018] The fourth example compressor system 322 forms a part of a heat pump system 340 further comprising a condenser coil 342, an expansion valve 344, and an evaporator coil 346. In addition to the fourth example compressor system 322, the fourth example vehicle heating, ventilating, and air conditioning system 320 further comprises an HVAC controller 350, a fan 352, and a HVAC user interface 354. The vehicle internal combustion engine 334 is mechanically connected to a vehicle charging system 360, and the vehicle charging system 360 supplies power to a vehicle battery 362 through a DC bus 364. Power to the compressor motor 330 and the fan 352 may also be supplied from the vehicle charging system 330 through the DC bus 364. Electrical power generated by the compressor/motor generator 330 in the second mode may be supplied to the DC bus 364.

[0019] The fourth example vehicle heating, ventilating, and air conditioning system 320 further comprises an auxiliary power supply system 370 comprising an auxiliary battery 372, an auxiliary disconnect switch 374, and a vehicle disconnect switch 376. The fourth example vehicle heating, ventilating, and air conditioning system 320 may be operated based on electrical power generated by any one or any combination of the vehicle charging system 360, the vehicle battery 362, and the auxiliary battery 364 when the vehicle internal combustion engine 334 is not operating.

V. FIFTH EXAMPLE

[0020] Referring now to FIG. 5 of the drawing, depicted therein is a fifth example vehicle heating, ventilating, and air conditioning system 420 comprising a fifth example compressor system 422. The fifth example compressor system 422 comprises a compressor motor/generator 430 mechanically connected to a compressor 432 through a compressor clutch 436a and to a vehicle internal combustion engine 434 through an engine clutch 436b. The compressor system 422 that can be operated such that the compressor motor/generator 430 mechanically engages and operates the compressor 432 and/or such that the compressor motor/generator 430 generates electricity based on operation of the vehicle internal combustion engine 434. The compressor clutch 436a mechanically disengages a compressor motor/generator shaft 438 from the compressor 432 in one mode and mechanically engages the compressor motor/generator shaft 438 with compressor 432 in another mode. The engine clutch 436b mechanically disengages the compressor motor/generator shaft 438 from the vehicle combustion engine 434 in one mode and mechanically engages the compressor motor/generator shaft 438 with the vehicle combustion engine 434 in another mode.

[0021] The fifth example compressor system 422 forms a part of a heat pump system 440 further comprising a condenser coil 442, an expansion valve 444, and an evaporator coil 446. In addition to the fifth example compressor system 422, the fifth example vehicle heating, ventilating, and air conditioning system 420 further comprises an HVAC controller 450, a fan 452, and a HVAC user interface 454. The vehicle internal combustion engine 434 is mechanically connected to a vehicle charging system 460, and the vehicle charging system 460 supplies power to a vehicle battery 462 through a DC bus 464. Power to the compressor motor/generator 430 and the fan 452 may also be supplied from the vehicle charging system 430 through the DC bus 464. Electrical power generated by the compressor/motor generator 430 may be supplied to the DC bus 464.

VI. SIXTH EXAMPLE

[0022] Referring now to FIG. 6 of the drawing, depicted therein is a sixth example vehicle heating, ventilating, and air conditioning system 520 comprising a sixth example compressor system 522. The sixth example compressor system 522 comprises a compressor motor/generator 530 mechanically connected to a compressor 532 through a compressor clutch 536a and to a vehicle internal combustion engine 534 through an engine clutch 536b. The sixth example compressor system 522 can be operated in a first mode in which the compressor motor/generator 530 mechanically engages and operates the compressor 532 and in a second mode in which the compressor motor/generator 530 generates electricity based on operation of the vehicle internal combustion engine 534. The compressor clutch 536a mechanically disengages a compressor motor/generator shaft 538 from the compressor 532 in one mode and mechanically engages the compressor motor/generator shaft 538 with compressor 532 in another mode. The engine clutch 536b mechanically disengages the compressor motor/generator shaft 538 from the vehicle combustion engine 534 in one mode and mechanically engages the compressor motor/generator shaft 538 with the vehicle combustion engine 534 in another mode.

[0023] The sixth example compressor system 522 forms a part of a heat pump system 540 further comprising a condenser coil 542, an expansion valve 544, and an evaporator coil 546. In addition to the sixth example compressor system 522, the sixth example vehicle heating, ventilating, and air conditioning system 520 further comprises an HVAC controller 550, a fan 552, and a HVAC user interface 554. The vehicle internal combustion engine 534 is mechanically connected to a vehicle charging system 560, and the vehicle charging system 560 supplies power to a vehicle battery 562 through a DC bus 564. Power to the compressor motor/generator 530 and the fan 552 may also be supplied from the vehicle charging system 530 through the DC bus 564. Electrical power generated by the compressor/motor generator 530 may be supplied to the DC bus 564.

[0024] The sixth example vehicle heating, ventilating, and air conditioning system 520 further comprises an auxiliary power supply system 570 comprising an auxiliary battery 572, an auxiliary disconnect switch 574, and a vehicle disconnect switch 576. The sixth example vehicle heating, ventilating, and air conditioning system 520 may be operated based on electrical power generated by any one or any combination of the vehicle charging system 560, the vehicle battery 562, and the auxiliary battery 564 when the vehicle internal combustion engine 534 is not operating.