US6367270B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle air-conditioning system
Assignee: Denso Corp
•
Filing: 2000-12-21
•
Granted: 2002-04-09
•
Expires: 2020-12-21
Abstract
Abstract The present invention balances power consumption reduction and a cooling in a vehicle air-conditioning system having a compressor selectively driven by a vehicle engine or a motor while the compressor is driven by the motor. At least one of a capacity of a blower and a capacity of a compressor arranged in a refrigeration cycle R while the compressor being driven by a motor is reduced in comparison to the capacity of the blower and the capacity of the compressor while the compressor being driven by a vehicle engine. Furthermore, while a cooling heat load of an evaporator is greater than a predetermined value, the capacity of the compressor is first reduced prior to reducing the capacity of the blower.
Inventors
- 👤 Yasuhiko Niimi
- 👤 Toshinobu Homan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:09
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3205; B60H1/3208; B60H2001/3236; B60H2001/3238; B60H2001/3255; B60H2001/3261; B60H2001/3269; B60H2001/327; B60H2001/3275; B60H2001/328; B60H2001/3282; B60H2001/3286; B60H2001/3294; F; F02; F02N; F02N11/00; F02N11/003; F02N11/08; F02N11/0862; F02N11/0866
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
137 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein said compressor capacity is first reduced prior to reducing said blower capacity while a cooling heat load of said evaporator is greater than a predetermined value.
Claim 2
Dependent Claim
137 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein said compressor capacity is first reduced prior to reducing said blower capacity while a cooling heat load of said evaporator is greater than a predetermined value.
Claim 3
Dependent Claim
45 words
A vehicle air conditioning system according to claim 1 , wherein both said blower capacity and said compressor capacity are reduced while said cooling heat load of said evaporator is lower than said predetermined value, whereby a window glass of said vehicle is not fogged.
Claim 4
Dependent Claim
42 words
A vehicle air conditioning system according to claim 2 , wherein said compressor capacity is adjusted to cool said evaporator to coincide with a target value; and wherein said compressor capacity is reduced by adjusting said target value to a higher temperature.
Claim 5
Dependent Claim
29 words
A vehicle air conditioning system according to claim 2 , wherein said cooling heat load of said evaporator is determined based on an outside air temperature of said vehicle.
Claim 6
Dependent Claim
41 words
A vehicle air conditioning system according to claim 1 , wherein said compressor capacity is adjusted to cool said evaporator to coincide with a target value; and wherein said compressor capacity is reduced by adjusting said target to a higher temperature.
Claim 7
Dependent Claim
29 words
A vehicle air conditioning system according to claim 5 , wherein said cooling heat load of said evaporator is determined based on an outside air temperature of said vehicle.
Claim 8
Dependent Claim
29 words
A vehicle air conditioning system according to claim 1 , wherein said cooling heat load of said evaporator is determined based on an outside air temperature of said vehicle.
Claim 9
Dependent Claim
141 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein said blower capacity is first reduced prior to reducing said compressor capacity if a window glass of said vehicle is being fogged while said compressor is driven by said motor.
Claim 10
Dependent Claim
141 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein said blower capacity is first reduced prior to reducing said compressor capacity if a window glass of said vehicle is being fogged while said compressor is driven by said motor.
Claim 11
Dependent Claim
28 words
A vehicle air conditioning system according to claim 8 , wherein the existence of fogging is determined based at least on an outside air temperature of said vehicle.
Claim 12
Dependent Claim
47 words
A vehicle air conditioning system according to claim 9 , wherein said blower capacity is not reduced it is determined that said window glass of said vehicle is being fogged when a blow mode is set to provide directional air toward said window glass of said vehicle.
Claim 13
Dependent Claim
47 words
A vehicle air conditioning system according to claim 8 , wherein said blower capacity is not reduced it is determined that said window glass of said vehicle is being fogged when a blow mode is set to provide directional air toward said window glass of said vehicle.
Claim 14
Dependent Claim
88 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: means for gradually changing said compressor capacity; wherein a rate of gradual change of compressor capacity while said compressor is driven by said motor is greater than a rate of change of said compressor capacity when said compressor is driven by said vehicle engine.
Claim 15
Dependent Claim
88 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: means for gradually changing said compressor capacity; wherein a rate of gradual change of compressor capacity while said compressor is driven by said motor is greater than a rate of change of said compressor capacity when said compressor is driven by said vehicle engine.
Claim 16
Dependent Claim
65 words
A vehicle air conditioning system according to claim 12 , wherein: said compressor capacity is adjusted to cool said evaporator to coincide with a target value; and wherein a rate of change of said target value while said compressor is driven by said motor is increased relative to said rate of change of said target value when said compressor is driven by said vehicle engine.
Claim 17
Dependent Claim
34 words
A vehicle air conditioning system according to claim 13 , wherein said compressor is a variable displacement compressor; and wherein said compressor capacity is changed by changing a displacement of said variable displacement compressor.
Claim 18
Dependent Claim
34 words
A vehicle air conditioning system according to claim 12 ; wherein said compressor is a variable displacement compressor; and wherein said compressor capacity is changed by changing a displacement of said variable displacement compressor.
Claim 19
Dependent Claim
105 words
A vehicle air conditioning system according to claim 15 , further comprising a computing means for computing a control output value, said computing means determining said displacement of said compressor based on a deviation between an actual degree of coolness of said evaporator and said target value; wherein a rate of change of said control output value computed by said computing means relative to said deviation while said compressor is driven by said motor is increased relative to said rate of change of said control output value computed by said computing means relative to said deviation while said compressor is driven by said vehicle engine.
Claim 20
Dependent Claim
102 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: means for gradually changing a capacity of a blower for blowing air toward an interior of said vehicle, wherein a rate of gradual change of said blower capacity while said compressor is driven by said motor is increased relative to said rate of gradual change of said blower capacity while said compressor is driven by said vehicle engine.
Claim 21
Dependent Claim
102 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: means for gradually changing a capacity of a blower for blowing air toward an interior of said vehicle, wherein a rate of gradual change of said blower capacity while said compressor is driven by said motor is increased relative to said rate of gradual change of said blower capacity while said compressor is driven by said vehicle engine.
Claim 22
Dependent Claim
158 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein at least a degree of said reduction of said blower capacity and a degreee of said reduction of said compressor capacity is controlled based on an amount of remaining charge in a battery that provides power to said motor when said compressor is driven by said motor.
Claim 23
Dependent Claim
158 words
A vehicle air conditioning system having a compressor arranged in a refrigeration cycle, wherein a drive source of said compressor is selectively changed between a vehicle engine and a motor depending on a running condition of a vehicle, said vehicle air conditioning system comprising: a blower for blowing air toward an interior of said vehicle; and an evaporator arranged in said refrigeration cycle for cooling said air blown from said blower; wherein at least a blower capacity or a compressor capacity is reduced while said compressor is driven by said motor relative to a respective blower capacity or compressor capacity while said compressor is driven by said vehicle engine; and wherein at least a degree of said reduction of said blower capacity and a degreee of said reduction of said compressor capacity is controlled based on an amount of remaining charge in a battery that provides power to said motor when said compressor is driven by said motor.
Claim 24
Dependent Claim
60 words
A vehicle air conditioning system according to claim 18 , wherein: said compressor capacity is adjusted to make an actual degree of coolness of said evaporator to coincide with a target value; and said target value is adjusted to a higher temperature while said amount of remaining charge in said battery becomes less than or equal to a predetermined value.
Claim 25
Dependent Claim
38 words
A vehicle air conditioning system according to claim 19 , wherein said amount of remaining charge in said battery is estimated based at least on power consumption information of said motor or power consumption information of said blower.
Claim 26
Dependent Claim
41 words
A vehicle air conditioning system according to clain 19 , wherein an amount of change in said target value when said target value being adjusted to said higher temperature is increased as said amount of remaining charge in said battery decreases.
Claim 27
Dependent Claim
41 words
A vehicle air conditioning system according to clain 19 , wherein an amount of change in said target value when said target value being adjusted to said higher temperature is increased as said amount of remaining charge in said battery decreases.
Claim 28
Dependent Claim
38 words
A vehicle air conditioning system according to claim 21 , wherein said amount of remaining charge in said battery is estimated based at least on power consumption information of said motor or power consumption information of said blower.
Claim 29
Dependent Claim
38 words
A vehicle air conditioning system according to claim 18 , wherein said mount of remaining charge in said battery is estimated based at least on power consumption information of said motor or power consumption information of said blower.
References Cited (Backward Citations)
JPS60155724U
Cited
JPH0687678U
Cited
US5867996A
Cited
JPH11254955A
Cited
US6230507B1
Cited
US6287081B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-08 | 2005-10-08 | 2006-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-08 | 2009-10-08 | 2010-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-08 | 2013-10-08 | 2014-04-09 | $7700.00 | Window Closed / Lapsed |