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1. 发明专利

JPH08320170A THERMOSTATIC EXPANSION VALVE 失效
公开(公告)号：JPH08320170A
公开(公告)日：1996-12-03
申请号：JP26418995
申请日：1995-10-12
申请人： NIPPON DENSO CO
发明人： KAKEHASHI SHINJI , TOMATSU YOSHITAKA , KINOSHITA HIROSHI , YAMANAKA YASUSHI , FUJIWARA KENICHI
IPC分类号： F16K31/68 , F25B41/06 , G05D23/12
摘要： PURPOSE: To reduce noise caused by vibration of a valve disc of a thermostatic expansion valve by integrally moving a temperature sensitive element and the valve disc following the displacement of a pressure responsive member. CONSTITUTION: Opening of a throttle passage 51 is adjusted and the degree of overheating of a refrigerant at an outlet of an evaporator 21 is adjusted by integrally moving cases 41, 42 of a temperature sensitive element 39 and a valve disc 50 following the displacement of a pressure responsive member (diaphragm) 43 of the temperature sensitive element 39. Accordingly, even when the valve disc 50 vibrates owing to rapid expansion of the refrigerant in the throttle passage 51 and the vibration is transmitted to the cases 41, 42 of the temperature sensitive element 39, the cases 41, 42 are constructed such that they are movable with respect to housing members 31, 32, and the cases 41, 42 are separated from the housing members 31, 32 so that the vibration is substantially prevented from being transmitted to the housing members 31, 32. Hereby, noise due to the vibration is prevented from being transmitted to the outside through the housing members 31, 32.

2. 发明专利

JPH08282241A CONTROL DEVICE FOR AIR CONDITIONER FOR VEHICLE 失效
公开(公告)号：JPH08282241A
公开(公告)日：1996-10-29
申请号：JP8983095
申请日：1995-04-14
申请人： NIPPON DENSO CO
发明人： TAKANO YOSHIAKI , KINOSHITA HIROSHI , NIIMI YASUHIKO
IPC分类号： B60H1/00
摘要： PURPOSE: To eliminate increase in burden on an engine at the time of accelerating or hill climbing to restrict rise of blow temperature in an inexpensive constitution. CONSTITUTION: An operation rate of a cooling medium compressor 2 is calculated based on a temperature difference between a detected temperature by a pre-evaporator temperature sensor 15 and a detected temperature by a post- evaporator temperature sensor 11, and a rotation number ratio of the refrigerant compressor 2, and reference temperatures of actuation and stoppage of the refrigerant compressor 2 are set higher as the operation rate is lower. As the rotational frequency of the refrigerant compressor 2 is increased by increase in the rotational frequency of an engine 8 at the time of acceleration or hill climbing of a vehicle, the operation rate is stopped, and burden on the engine 8 is reduced. In the case where the post-evaporator temperature is higher, cooling capacity is required, where the refrigerant compressor 2 is actuated continuously to prevent rise of blow temperature. Because the operation rate can be calculated using the rotational frequency of the engine 8 as the rotational frequency of the refrigerant compressor 2, separate parts are not required.

3. 发明专利

JPH08142634A AIR CONDITIONER FOR VEHICLE 失效
公开(公告)号：JPH08142634A
公开(公告)日：1996-06-04
申请号：JP28170094
申请日：1994-11-16
申请人： NIPPON DENSO CO
发明人： KINOSHITA HIROSHI , INOUE YOSHIMITSU
IPC分类号： B60H1/00
摘要： PURPOSE: To suppress the fluctuation of the air blow-out temperature into a cabin due to the turning-on/off of a compressor to be small in an air conditioner for a vehicle of air mix type. CONSTITUTION: An air mix part having a blower to blow the air, an evaporator to cool the air by driving a compressor, a heater core and an air mix door, and heating the air is provided in an duct. A water valve to control the opening SW of the air mix door and the feeding of the heating medium to the heater core, and an air conditioner control device to control the blower voltage according to the target air outlet temperature TAO are provided. When the target air outlet temperature TAO is between the first temperature TOA1 where the air passing the evaporator is not required to be heated and the second temperature TOA2 where the maximum cooling capacity is not required, the cooled air temperature stabilizing mode to open the air mix door in the closed condition of the water valve is realized.

4. 发明专利

JPH0781385A REFRIGERATING CYCLE CONTROL DEVICE 失效
公开(公告)号：JPH0781385A
公开(公告)日：1995-03-28
申请号：JP23001793
申请日：1993-09-16
申请人： NIPPON DENSO CO
发明人： KAKEHASHI SHINJI , KINOSHITA HIROSHI
IPC分类号： B60H1/32
摘要： PURPOSE:To reduce the temperature of not only a thermistor mounting part but also the whole of an evaporator to provide a uniform temperature distribution in the evaporator by turning a compressor ON for a specified time when the detected number of ON-OFF operations of the compressor exceeds the set number. CONSTITUTION:In a refrigerating cycle consisting of a compressor 2, a condenser 3, a receiver 4, an expansion valve 5, and an evaporator 6, and using a laminated type evaporator, in which a plate type refrigerant replacing part for heat- exchanging the refrigerant on the inlet and outlet passage sides arranged in proximity to each other is formed integrally width the evaporator 6, the ON- OFF state of the compressor 2 is detected by a controller 9. The number of ON-OFF operations of the compressor 2 is counted, and the number of ON-OFF operations is compared to the set number of ON-OFF operations. When the number of ON-OFF operations exceeds the set number of ON-OFF operations, the compressor 2 is turned ON for a specified time to prevent the temperature distribution in the evaporator 6 from becoming uneven.

5. 发明专利

JPH06117707A VEHICLE AIR-CONDITIONER 失效
公开(公告)号：JPH06117707A
公开(公告)日：1994-04-28
申请号：JP26121992
申请日：1992-09-30
申请人： NIPPON DENSO CO
发明人： ITO SEIJI , KINOSHITA HIROSHI , ENOMOTO MASAYOSHI
IPC分类号： B60H1/00 , B60H1/03 , B60H1/22 , F25B1/00
摘要： PURPOSE:To reduce torque variation when the operation of the air-conditioner is changed over to a stopped state of a compressor and prevent slippage on a snow road during running of a vehicle in a heating operation using gaseous refrigerant of high temperature and high pressure (hot gas) during a freezing cycle. CONSTITUTION:A condensor 11 is arranged at a discharging side of a compressor 10 and a heat exchanger 14 is arranged at a suction side of the compressor 10. A path connecting the compressor 10 to the condensor 11 is provided with an opening or closing valve 18a. A bypassing pipe 20 bypassing from the opening or closing valve 18a to the condensor 11 is provided with a second pressure reducing device 22. During a heating operation, a compression work performed by the compressor 10 becomes a heating calorie included in hot gas and the heat is radiated by the heat exchanger 14. In the case that thermal radiation at the heat exchanger 14 is obviated and the compressor is stopped, the opening or closing valve 18a is opened and the refrigerant is flowed from the compressor 10 toward the condensor 11 for a specified period of time and then the operation of the compressor 10 is continued for a specified period of time. With such an arrangement as mentioned above, torque drop of the compressor 10 is decreased and the torque variation applied from an internal combustion engine to a driving system for running of the vehicle is reduced.

6. 发明专利

JPH0624239A TEMPERATURE ARITHMETIC DEVICE FOR HEAT EXCHANGER IN VEHICLE 失效
公开(公告)号：JPH0624239A
公开(公告)日：1994-02-01
申请号：JP18359492
申请日：1992-07-10
申请人： NIPPON DENSO CO
发明人： KINOSHITA HIROSHI , MURANAKA NAOKI , YAMANAKA YASUSHI
IPC分类号： B60H1/00 , B60H1/32 , B60H3/00
摘要： PURPOSE:To provide a temperature arithmetic device wherein the temperature of a heat exchanger for a vehicle is always properly calculated so as to prevent a cloud and realize power saving of a driving source. CONSTITUTION:In a microcomputer 110, in accordance with each detection result of an outside air temperature sensor 70, rain drop sensor 90 and a car speed sensor 100, an internal surf ace estimated temperature of a front windshield is calculated, and based on a data of deciding a relation between an internal surface dew point temperature of the front windshield and a target temperature of an evaporator 20 formed by simulating equal to the arithmetic internal surface estimated temperature, under harmonizing a human body humidifying amount in a cabin with a dehumidifying amount of the evaporator 20, its target temperature is calculated in accordance with the simulated internal surface dew point temperature.

7. 发明专利

JPH05238254A 失效
公开(公告)号：JPH05238254A
公开(公告)日：1993-09-17
申请号：JP3915992
申请日：1992-02-26
申请人： NIPPON DENSO CO
发明人： NUMAZAWA SHIGEO , SUZUKI HIDEKI , KINOSHITA HIROSHI
IPC分类号： B60H1/32 , F01P7/04
摘要： PURPOSE:To provide an air conditioner for vehicle which secures the return of the lubricating oil of a compressor even in the low loading. CONSTITUTION:A fan 10 for a condenser which blows air into a coolant condenser 5 and a cooling fan 11 which blows air into a radiator 12 are controlled by an air conditioner controller 4 through the fan controlling amplifiers 13 and 14. The air conditioner controller 4 suspends the operations of the fan 10 for condenser and the cooling fan 11 through the fan controlling amplifiers 13 and 14, when the high pressure Ph on the upstream side from an expansion valve 7 is 3kg/cm G or less, engine cooling water temperature Tw is 95 deg.C or below, and the revolution number Nc of a variable capacity type compressor 1 is 1300rpm or less.

8. 发明专利

JPH05139154A VEHICLE AIR CONDITIONER WITH HYDRAULIC FAN 失效
公开(公告)号：JPH05139154A
公开(公告)日：1993-06-08
申请号：JP31031691
申请日：1991-11-26
申请人： NIPPON DENSO CO
发明人： NISHI YASUYUKI , KINOSHITA HIROSHI
IPC分类号： B60H1/32
摘要： PURPOSE:To suppress fuel consumption of engine by minimizing the added torque between the torque of a coolant compressor and the torque of a hydraulic pump. CONSTITUTION:The outside air temperature to be heat-exchanged with a coolant condenser 5 and the high voltage side pressure of a refrigerating cycle 4 are detected, and the torque of a coolant compressor 3 is detected. The torque of a hydraulic pump 15 is detected from the rotating speed of a hydraulic fan 14. A control circuit 17 sets the rotating speed of the hydraulic fan 14 so that the added torque obtained by adding the compressor torque to the pump torque is minimized.

9. 发明专利

JPH0596937A TORQUE CALCULATING DEVICE FOR VARIABLE DISPLACEMENT TYPE COMPROESSOR 失效
公开(公告)号：JPH0596937A
公开(公告)日：1993-04-20
申请号：JP26195691
申请日：1991-10-09
申请人： NIPPON DENSO CO
发明人： NUMAZAWA SHIGEO , YAMANAKA YASUSHI , SUZUKI HIDEKI , KINOSHITA HIROSHI , NISHI YASUYUKI
IPC分类号： F02D29/04 , B60H1/32 , F02D45/00 , F04B49/06
摘要： PURPOSE:To precisely calculate a torque of a compressor acting as a load to a drive source, irrespective of disturbance, in a system incorporating a refrigerating cycle in which a variable volume type compressor driven by an engine circulates coolant through a condenser, in consideration with not only the coolant pressure on the high pressure side but also a variation in the capacity of the compressor. CONSTITUTION:A refrigerating cycle Rc circulates coolant through a condenser 50, the discharge pressure of coolant from a compressor is determined. Further, an ambient air temperature detected by an ambient air temperature is compensated in accordance with a time having passed after a start of running of a vehicle so as to reduce the affection by the temperature of air introduced from an engine, and further, the detected ambient air temperature is compensated in accordance with a time having passed after a stop of a vehicle so as to increase the affection by the temperature of the air. Then, the heat-exchanging capability of the condenser 50 is determined in accordance with the result of compensation of the ambient air temperature, and the torque of the compressor 20 is calculated in accordance with the determined discharge pressure and the determined heat-exchanging capability.

10. 发明专利

JPH04251163A CAR AIR CONDITIONER 失效
公开(公告)号：JPH04251163A
公开(公告)日：1992-09-07
申请号：JP17986891
申请日：1991-07-19
申请人： NIPPON DENSO CO
发明人： FUJIWARA TAKASHI , USAMI KIYOSHI , NISHI YASUYUKI , NUMAZAWA SHIGEO , KINOSHITA HIROSHI
IPC分类号： F25B1/00 , B60H1/32 , F25B5/02 , F25B41/04 , F25B41/06
摘要： PURPOSE:To prevent return delay of a lubricant discharged with refrigerant when starting a compressor and protect said compressor effectively from disadvantages, such as burning. CONSTITUTION:A bypass passage 8, which bypasses an expansion means 7 and an evaporator 6, is installed out of a freezing cycle. When starting a compressor 1, specified time t1 is adapted to be variable to such factors as may affect the burning of a compressor, for example, open air temperature, a rotary speed and capacity of the compressor.

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