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    • 11. 发明专利
    • ELECTRONIC REFRIGERATOR
    • JPH02309168A
    • 1990-12-25
    • JP12923889
    • 1989-05-23
    • NIPPON DENSO CO
    • YAMADA KENJIFUJIWARA KENICHINISHIZAWA KAZUTOSHISHIROTA YUICHI
    • F25D11/00
    • PURPOSE:To always operate in an approximately optimum element efficiency state with respect to temperature change by switching electrothermal element groups so divided as to obtain optimum element efficiency in response to the temperature difference of heat dissipation faces and heat absorption faces of the groups to series wirings or parallel wirings. CONSTITUTION:The temperature difference of the heat dissipation faces and heat absorption faces of electrothermal element groups (element modules 1, 2) is detected by temperature sensors 3 - 6 and a controller of a switch circuit 7. Simultaneously, the groups are divided into two modules 1, 2 and the groups divided to a constant-voltage power source 8 by a switch circuit 7 are switched to series wirings or parallel wirings. The groups divided to obtain optimum element efficiency in response to the temperature difference of the heat dissipation faces and heat absorption faces of the groups are switched to series wirings or parallel wirings. Thus, it can be always operated in an approximately optimum element efficiency to the temperature change.
    • 12. 发明专利
    • REFRIGERATING CYCLE
    • JPH02150668A
    • 1990-06-08
    • JP30506588
    • 1988-12-01
    • NIPPON DENSO CO
    • HONDA SHINFUJIWARA KENICHI
    • F25B1/00
    • PURPOSE:To simplify the structure of a fractionator and make piping connection easy by allowing liquid refrigerant overflowed from a storage to flow from one end of a communication pipe to the other end thereof to return in a cycle. CONSTITUTION:An R12 refrigerant and an R13B1 refrigerant are fractionated together with the progress of cooling operation and one end 10a is connected on the upper wall of a receiver 4 to open, while a fractionator comprises a communicating pipe 10 whose one end 10b is set to localize more upper than the other end 10a and a storage chamber 11 communicated with the receiver 4 through a communicating pipe 10. The storage chamber 11 is a cylindrical vessel to be connected to the communicating pipe 10 so that the communicating pipe 10 penetrates the center portion of the lower end face thereof and the other end 10b of the communicating pipe 10 is set until it is projected up to the center of the chamber. Accordingly, the storage chamber 11 condenses and liquidizes a gas refrigerant allowed to flow in through the communicating pipe 10 from the receiver 4 by cooling, can be stored up to the portion of the other end 10b of the communicating pipe 10 and the refrigerant overflowed from one end 10b of the communicating pipe 10, drops into the receiver 4 along the inner wall of the communicating pipe 10.
    • 13. 发明专利
    • REFRIGERANT RETRIEVER
    • JPH0278872A
    • 1990-03-19
    • JP23006088
    • 1988-09-16
    • NIPPON DENSO CO
    • SATO HIDEAKINAGASHIMA HISAOFUJIWARA KENICHI
    • F25B45/00
    • PURPOSE:To permit automatic operation and prevent the waste of time and electric power by a method wherein physical amounts, related to the conditions of refrigerant in respective refrigerating cycles of a condensing chamber and an evaporator, are detected and signals from detecting means, detecting the physical amounts, are received to continue the operation of a retriever when a difference between them is higher than a predetermined value and stop the operation of the same when the difference is lower than the predetermined value. CONSTITUTION:When the condensing retrieval of refrigerant is advanced and the refrigerant to be retrieved in an objective device becomes nearly zero, the pressure of the refrigerant in a condensing chamber 5 or a condensing pressure Pc is reduced and approaches to a refrigerant pressure Pe of a refrigerating cycle 11 in an evaporator whereby the value of a pressure difference DELTAP=Pc-Pe becomes small. This becomes the aim of finishing of retrieval work and, therefore, the pressure difference at this time can be determined as a given value DELTAP'. The contact of a relay 32 is opened when a pressure difference switch 23 has detected that the pressure difference has become lower than the given value deltaP' and, therefore, the contact of a main relay 28 is also opened, a compressor 13 as well as a fan motor 24 are stopped and solenoid valves 3, 17 are closed whereby the operation of a rifrigerant retriever and the refrigerating cycle 11 are stopped.
    • 14. 发明专利
    • PUMP
    • JPH0246159A
    • 1990-02-15
    • JP19757188
    • 1988-08-07
    • NIPPON DENSO CO
    • FUJIWARA KENICHI
    • H01L39/00H02K44/04
    • PURPOSE:To make the output of the title apparatus higher by forming a fluid passage into a spiral shape and by applying a force acting on fluid to the conducting part of said fluid based on the Fleming's left hand rule. CONSTITUTION:In a magnetic-field generator 1, an insulating container is filled with a liquid nitrogen and a current-carrying superconducting coil is arranged in said container and connected with a fluid passage 5 by an insulating connecting member 3. Said fluid passage 5 is formed into a tubular shape by the use of an insulating member and then into a spiral shape in such manner that the width of said passage becomes narrower at the place nearer to the center of said container, and the outlet of said passage being in that center is connected with an injection port 7. Then, copper electrode plates 9, 11 are provided within the fluid passage 5, and one end of the positive plate 9 nearest to the inlet part is connected with an electronic controller 13. Thus, when power is applied from a power supply 15 to said positive plate 9 and negative plate 11 via said electronic controller 13, a force is applied to sea water in the direction based upon the Fleming's left hand rule. As a result, said sea water moves toward the center of said flow passage 5 and a high-pressure sea water is injected from the injection port 7.
    • 15. 发明专利
    • WARM WATER TYPE HEATING DEVICE FOR VEHICLE
    • JPH01172015A
    • 1989-07-06
    • JP33154487
    • 1987-12-26
    • NIPPON DENSO CO
    • FUJIWARA KENICHIINOUE YOSHIMITSU
    • B60H1/03B60H1/00B60H1/08F01P11/20
    • PURPOSE:To arrange so that heating may be conducted right after starting when the temperature of cooling water is low right after the starting of an engine or the like, by making a constitution in which low temperature cooling water is introduced into an adiabatic tank and high temperature cooling water within the tank is pushed out and is supplied to a warm water type heater. CONSTITUTION:When an engine is started, cooling water discharged from the engine enters into a bypass passage 27, and in the case of cooling water being low in temperature, cooling water, due to a bypass open/close valve 28 containing thermowax 43 being closed, flows into an adiabatic tank 24 through a hose 35 or the like. Within the adiabatic tank 24, cooling water filling its inside is in advance kept warm under a high temperature, so high temperature cooling water is made to flow out of a flow out pipe 33 because of the inflow of cooling water, and flows out into a supply piping 20 through a flow quantity control valve 48 for a predetermined time only, and replaces low temperature cooling water within the supply piping 20 reaching a heater 11. After the elapsing of the predetermined time, high temperature cooling water is supplied to the heater 11 via a communicating passage 61 and a fixed flow quantity regulating valve 49, and is used to generate warm wind for heating.
    • 16. 发明专利
    • GAS ALARM DEVICE
    • JPS63313049A
    • 1988-12-21
    • JP14999087
    • 1987-06-16
    • NIPPON DENSO CONEW COSMOS ELECTRIC CO
    • ITO MASAHIKOFUJIWARA KENICHIMUTO KATSUAKI
    • G01N27/12G01N27/04G08B21/00G08B21/16
    • PURPOSE:To enable the common use of the titled device for detection of various kinds of gases by constituting the device in such a manner that the electric power from a charger is converted by a power supply circuit to the voltage suitable for a gas sensor and processing circuit. CONSTITUTION:The electric power from the charger 20 is converted by the power supply circuit 22 to the voltages suitable for the gas sensor 24 and the processing circuit 26 and such voltages are respectively supplied thereto. The circuit 26 receives the detection output from the sensor 24, compares the discrepancies of the detection output value from the plural reference values provided in said circuit and passes electric current to an LED 30 so that the LED emits light according to the results thereof. A switch 12 to be operated at the time of changing the kind of the gas to be detected is connected to the circuit 26. Whether the switch 1 is operated to the side for detecting gaseous CO or the side for detecting gaseous alcohol is judged by this circuit. Furthermore, the circuit makes the comparison processing by shifting the levels of the plural reference values or attenuating or amplifying the detection output of the sensor 24 according to the operating condition of the switch 12. The detection of the gas concn. is thus executed with one unit.
    • 17. 发明专利
    • LIQUID HEATING DEVICE
    • JPS63279951A
    • 1988-11-17
    • JP11376887
    • 1987-05-11
    • NIPPON DENSO CO
    • INOUE YOSHIMITSUFUJIWARA KENICHI
    • B60S1/48
    • PURPOSE:To lower the consumption energy of a heating device by circulating heated liquid through a liquid passage so as to allow the heated liquid to perform heat-exchange in a heat-accumulator storing therein a supercooled heat accumulating material which produces latent heat in a nucleus generating device. CONSTITUTION:Upper and lower tanks 11a, 11b in a heat accumulator 10 are connected together through passages 11 and a circulating pipe 14 for circulation. A supercooled heat accumulating material 16 is stored in the heat accumulator 10 around the passages 11, and corrugated fins 17 are welded to the inside of the same so as to enhance the efficiency of heat-exchange between liquid in the passage 11 and the heat accumulating material 16. Liquid in the lower tank 11b is heated by a heater 9 and is provided therein with a nucleus producing device 19 having a seed crystal section 18. Latent heat is produced in association with the liquefying of supercooled heating material by the supercooled heat accumulating material 16 and the seed crystal section 18 so as to perform heat-exchange with liquid in the passages 11. Further, when all supercooled heat accumulating material 16 has a temperature above the melting point so as to be turned into a liquid phase condition, the heat given by a heater 9 is accumulated as latent heat in the heat accumulation material 16.