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1. 发明专利

JPH0712283A PIPE FITTING FOR CONNECTION OF REFRIGERANT PIPING 失效
公开(公告)号：JPH0712283A
公开(公告)日：1995-01-17
申请号：JP14928193
申请日：1993-06-21
申请人： NIPPON DENSO CO
发明人： IZUMI RYOICHI , OGURA KENJI , TSUCHIYA SOUJIROU , KURODA YOSHITAKA , ISOGAI KEIICHI
IPC分类号： F16L41/08 , F16L43/00
摘要： PURPOSE:To provide a refrigerant piping connection fitting for bending vertically a refrigerant passage in the neighborhood of a connection part, with which the height of the connection fitting is reduced and the manufacturing costs are suppressed. CONSTITUTION:A refrigerant piping connection fitting 1 is composed of a stationary block 4 secured by bolt to an object to be connected 2 and a refrigerant piping 5 threaded through the block 4 and supported, therein the refrigerant piping 5 is bent in L form with a bending radius of approx. zero. The stationary block 4 and refrigerant piping 5 are fixed in the condition that at least the inside bend 10a of this bent part 10 is accommodated in the block 4. This permits suppressing the dimension of the connection surface of the block 4 relative to the refrigerant piping 5, i.e, reducing the height h1 of the connection fitting 1. According to this constitution in which refrigerant passage bent vertically is no more formed in the block 4, but the refrigerant flow is bent vertically by bending the piping 5, it is possible to suppress the manufacturing costs of the refrigerant piping connection fitting 1.

2. 发明专利

JPH05196192A PLUG 失效
公开(公告)号：JPH05196192A
公开(公告)日：1993-08-06
申请号：JP28622192
申请日：1992-10-23
申请人： NIPPON DENSO CO
发明人： TERAO KEIKO , IZUMI RYOICHI , OGURA KENJI , KUMAMOTO SHINYA
IPC分类号： F16L55/10
摘要： PURPOSE:To improve the workability by reducing the inserting force when a male side pipe is engaged with a female side pipe through an O-ring. CONSTITUTION:An open tip part of a female side pipe 4 which is engaged with a male side pipe through an O-ring is plugged by a plug 1 before engagement with the male side pipe. The plug 1 is provided with a lid part 1b to be engaged with the inner circumference of a cylindrical part 8b of a union 8 provided to the tip of the male side pipe 4, and a sponge 9 which is immersed in oil is mounted on the edge surface of the lid part 1b. This sponge 9 is maintained in the pushingly-pressed condition against the inner circumferential surface of the cylindrical part 8b when the plug 1 is fixed to the cylindrical part 8b.

3. 发明专利

JPS6463754A CHILLING UNIT FOR CAR 失效
公开(公告)号：JPS6463754A
公开(公告)日：1989-03-09
申请号：JP21854787
申请日：1987-09-01
申请人： NIPPON DENSO CO
发明人： OGURA KENJI , MIZUTANI TAKETO
IPC分类号： B60H1/32 , F25B1/00
摘要： PURPOSE: To achieve an accurate and quick adjustment of refrigerant components by providing a control valve for controlling a flow rate according to the degree of heating a refrigerant in a rectifying circuit which is formed with both ends thereof in contact with one point between a condenser and an expansion valve and with the other point between an evaporator aid a compressor in a cooler for a vehicle using a non-azeotropic mixed refrigerant. CONSTITUTION: When a large cooling capacity is demanded, a control valve 9 is closed so that a low boiling point refrigerant is increased to be circulated. With a drop in the temperature within a vehicle after the start of the operation, the demanded cooling capacity is lowered to open the control valve 9. Upon the opening of the control valve 9, a part of the refrigerant passing through a receiver 3 flows to the side of the rectifying circuit 15 and decompressed by a decompression means 6 for rectifying so that the low boiling point refrigerant is separated from the high boiling point refrigerant in a rectifying device 7. The refrigerant containing more of the low boiling point refrigerant is sent to a cooler 8 from an upper part of the rectifying device 7 and the refrigerant containing more of the high boiling point refrigerant to a heat exchanger 10 from below separately. This enables adjusting of components of the refrigerant accurately and in a short time.

4. 发明专利

JPH07332563A PIPE JOINT AND FITTING METHOD THEREOF 失效
公开(公告)号：JPH07332563A
公开(公告)日：1995-12-22
申请号：JP4992895
申请日：1995-03-09
申请人： NIPPON DENSO CO
发明人： YOSHIDA TOMONAO , NAMIKAWA AKIHITO , OGURA KENJI , ENOMOTO MASAYOSHI , SHIRAISHI HIROAKI
IPC分类号： F16L37/14
摘要： PURPOSE:To provide a pipe joint firmly fastened by utilizing the internal pressure of a fluid filled in the pipe joint and easily fitted/removed when the fluid is not filled in the pipe joint. CONSTITUTION:A fixing member 310 is inserted into a fixing member 320 while keeping such a position that the protruding parts 331 of the fixing member 320 and the claw parts 319b of the fixing member 310 are not axially overlapped, so as to wrap in a male side joint 50 and a female side joint 60 in the connected state, mutually from the axial direction of piping. The fixing member 320 is then rotated clockwise in the fixed state of the fixing member 310. The protruding parts 331 thereby approach protruding parts along the slant faces of the claw parts 319b. Further in the fixed state of the fixing member 310. the fixing member 320 is freed. The fixing member 320 is thereby energized by a compression coil spring 350, and each protruding part 331 is fitted between the claw part 319b and the protruding part. This energizing direction coincides with the mutually separating direction of the pipe joints by the internal pressure of a fluid.

5. 发明专利

JPH02238259A AIR CONDITIONER FOR VEHICLE 失效
公开(公告)号：JPH02238259A
公开(公告)日：1990-09-20
申请号：JP5499489
申请日：1989-03-09
申请人： NIPPON DENSO CO
发明人： HIRATA TOSHIO , OGURA KENJI , MIZUTANI TAKETO
IPC分类号： F25B1/00 , B60H1/32
摘要： PURPOSE:To effectively switch space cooling capacity in a short time by providing a storage unit for low boiling point refrigerant to be connected to the top of a liquid reservoir through a first valve and to the low pressure side of a compressor through a second valve. CONSTITUTION:When a fan changeover switch 15 is moved from an OFF position directly to a Hi position, a relay 19 is operated to open a contact 21, a coil 24 is energized to open a second solenoid valve 8, becoming a mixture mode, and a refrigerating cycle RC is cooled down. When the switch 15 is returned to a position of Med or Low if a space a temperature becomes comfortable, the rotating speed of a fan is reduced, the coil 23 of a first solenoid valve 7 is simultaneously conducted from a contact C through relay contacts 17, 21 and a timer 22 to open the valve 7. In this case, the valve 8 remains closed. Accordingly, this state is a separation mode, and gas refrigerant collected to the top of a reservoir 3 is transferred to a storage unit 6 and contained therein. Thus, the space temperature can be quickly lowered.

6. 发明专利

JPH062935A MOLDED RESIN PRODUCT AND METHOD FOR ITS REGENERATION 失效
公开(公告)号：JPH062935A
公开(公告)日：1994-01-11
申请号：JP16461692
申请日：1992-06-23
申请人： NIPPON DENSO CO
发明人： KODAMA HIROAKI , TATEIWA NARIHIRO , OGURA KENJI
IPC分类号： F24F13/02
摘要： PURPOSE:To provide a molded resin product which is easy to regenerate and a method for the regeneration. CONSTITUTION:A resin molding 19 (cannon duct of an air conditioner), before it is subjected to remelting, is given an impact to be broken at a joining resin part 91 of thin wall; by thus separating a removable resin part 92 from a resin part to be regenerated 93 an attachment (packing) 6, which is of a material being alien to the resin part to be regenerated 93, that is, of a material not to be regenerated, separates together with the removable resin part 92 from the resin part to be regenerated 93 so that the remelting of the resin part to be regenerated 93, subsequent to the separation, does not involve mixing therewith of the alien attachment 6. Thus by simply applying an impact of specific magnitude the alien attachment 6, which is not a subject of the regeneration, can be removed from the resin part to be regenerated 93 in a simple manner and most of the main component resin, except the removable resin part 92, can be utilized for the regeneration without involving much trouble and expenditure.

7. 发明专利

JPH04266521A REFRIGERANT PIPING CONNECTING DEVICE FOR FREEZING CYCLE 失效
公开(公告)号：JPH04266521A
公开(公告)日：1992-09-22
申请号：JP2632591
申请日：1991-02-20
申请人： NIPPON DENSO CO
发明人： KUMAZAKI KOJI , OGURA KENJI , IMAIDA HIROSHI , HAYASHI TATSUHISA
IPC分类号： B60H1/32 , F16L39/00 , F25B41/00
摘要： PURPOSE:To provide a refrigerant piping connecting device in which promotion of corrosion of a refrigerant piping made of aluminum is prevented. CONSTITUTION:A refrigerant piping connecting device 1 made of aluminum has a connection flange 3. The connection flange 3 comprises two division flanges 5 and 7. The division flanges 5 and 7 are integrally formed through injection-molding of a non-conductive resin material. For example, Nylon resin, polypropylene resin, polyoxymethylene resin, epoxy resin, and polyester resin are preferable in terms of material strength. The specifications of Nylon 66 of the resins is preferable. In mounting, by sliding the division flanges 5 and 7 over each other in a state that refrigerant pipings 63 and 65 are arranged in recessed grooves 11, 13, 43, and 45, protrusion parts 27 and 29 are engaged with glass parts 59 and 61. Since different metals do not make contact with each other, corrosion of a metallic part is prevented from promotion.

8. 发明专利

JPH02238262A AIR CONDITIONER FOR VEHICLE 失效
公开(公告)号：JPH02238262A
公开(公告)日：1990-09-20
申请号：JP5860289
申请日：1989-03-11
申请人： NIPPON DENSO CO
发明人： HIRATA TOSHIO , OGURA KENJI , MIZUTANI TAKETO
IPC分类号： F25B1/00 , B60H1/32
摘要： PURPOSE:To enhance charging efficiency of a storage unit used for switching room cooling capacity, to reduce in size the unit and to enhance placing properties in a vehicle by providing the unit for low boiling point refrigerant, means for operating to open or close first and second valves, and means for controlling pressure of refrigerant to be introduced to a liquid reservoir. CONSTITUTION:Since temperature of a condenser 2 is raised, refrigerant of gas state mainly containing low boiling point refrigerant is increased at the top of a liquid reservoir 3, and pressure Pr of the refrigerant is, when the temperature of the refrigerant in the top of the reservoir 3 is raised, enhanced, a controller ECU operates, when the detection value of a pressure sensor 15 for detecting it exceeds a set pressure Ps, drivers 13, 14 to open a first solenoid valve 7 and to close a second solenoid valve 8. This state is a refrigerant separation mode, refrigerant containing relatively more vapor refrigerant in the top of the reservoir 3, i.e., low boiling point refrigerant is separated from a refrigerating cycle RC, and contained in a storage unit 6 through the valve 7. In this case, room cooling capacity is remarkably increased due to the content of a large quantity of low boiling point refrigerant in the refrigerant, and the temperature in a compartment can be lowered in a short period of time even when an engine is not rotated at a high speed.

9. 发明专利

JPH02140414A CONTROL SYSTEM FOR VEHICLE 失效
公开(公告)号：JPH02140414A
公开(公告)日：1990-05-30
申请号：JP29415688
申请日：1988-11-21
申请人： NIPPON DENSO CO
发明人： OGURA KENJI
IPC分类号： F01P7/04 , B60H1/32
摘要： PURPOSE:To reduce excess devices totally by functioning a hydraulic system constituting an engine cooling system as a hydraulic circuit for driving a compressor in a control system. CONSTITUTION:In a control system with a compressor 21, an engine cooling system is composed of a hydraulic pump 11, hydraulic motor 13, and oil cooler 14, to cool an engine E by the pressurized cooling oil circulated by the hydraulic pump 11 through a hydraulic system. The compressor 21 is driven by the hydraulic motor 13. A radiator and water pump, usually required for the engine cooling system, can be omitted by using in common the hydraulic pump 11, hydraulic motor 13 and oil cooler 14. Thus, excess devices can be totally reduced in this cooling system as compared with the engine cooling systems of this type of control system.

10. 发明专利

JPS5712273A HEATER FOR VEHICLE 失效
公开(公告)号：JPS5712273A
公开(公告)日：1982-01-22
申请号：JP8611480
申请日：1980-06-25
申请人： NIPPON DENSO CO
发明人： WATANABE SATOSHI , SHIMIZU MASAJI , SHIKAMURA AKIO , OGURA KENJI
IPC分类号： F25B27/00 , B60H1/32 , F25B39/00

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