摘要:
A swash plate compressor provided with a housing internally defining and forming cylinder bores, a crank chamber, a suction chamber, and a discharge chamber; pistons accommodated in the cylinder bores to be able to reciprocate in them; a drive shaft driven by an external drive source and supported by the housing; a swash plate synchronously rotatably supported with respect to the drive shaft; and shoes at the front and rear of the swash plate for driving the pistons; wherein the shoes are mainly comprised of a magnesium-based material.
摘要:
An electric compressor includes a motor and a compression mechanism that is driven by the motor. The compressor forms part of the refrigerant circuit of an air conditioner. A control apparatus of the compressor adjusts the rotation speed of the motor for controlling the amount of compressed refrigerant gas discharged from the compression mechanism, or the displacement of the compressor, per unit time. When the energy efficiency of the motor is lower than a predetermined level, the control apparatus performs on-off control by alternately turning off the motor. During the on-off control, a required amount of refrigerant gas discharged per unit time is obtained, and the energy efficiency of the motor in the on time is higher than the predetermined level.
摘要:
An air-conditioning system has a refrigerant circuit. The circuit includes a condenser, a expansion valve, an evaporator and a variable displacement compressor. The system has a pressure difference detector. The pressure difference detector detects the pressure difference between two pressure monitoring points located on the refrigerant circuit. A control valve and a controller control the displacement of the compressor in accordance with the pressure difference detected by the pressure difference detector. This permits the displacement of the compressor to be quickly changed.
摘要:
A variable displacement compressor air conditions a compartment and includes a suction chamber, a discharge chamber and a crank chamber. A controller controls the pressure in the crank chamber to vary the compressor displacement. Two pressure monitoring points are located in a refrigerant circuit. The pressure in the crank chamber is controlled by a control valve. The control valve operates based on the pressure difference between the monitoring points such that a target pressure difference is maintained. A temperature sensor monitors the temperature of the compartment. A detection circuit compares the monitored temperature with reference values. When the monitored temperature surpasses one reference value or falls below another, the detection circuit outputs a detection signal. When receiving the detection signal, a pressure difference changer gradually increases or decreases the target value of the pressure differences accordingly.
摘要:
Microorganisms are recovered from soil by suspending a soil sample containing the microorganisms in a buffer solution comprising an organic acid of 3 or more carbon atoms, and then separating the microorganisms into supernatant of the suspension. Furthermore, the citrate buffer is a citric acid and a salt of citric acid. Also microorganisms are separated from the soil particles and recovered from the suspension by centrifugation or electrophoresis.
摘要:
A control valve controls the displacement of a variable displacement type compressor. The compressor has a crank chamber, a bleed passage, and a supply passage. An outlet valve portion located on the bleed passage to control the opening of the bleed passage. An inlet valve portion is located on the supply passage to control the opening of the supply passage. A transmission rod extends between the outlet valve portion and the inlet valve portion to connect the outlet valve portion to the inlet valve portion. The transmission rod moves axially. A through hole is located in the inlet valve portion to receive a part of the transmission rod. The through hole constitutes a part of the supply passage. A clearance is formed between the transmission rod and the through hole to constantly connect the discharge pressure zone to the crank chamber.
摘要:
An engine control apparatus of a vehicle having an air conditioner that has a variable displacement compressor is disclosed. The pressure difference between two points in a refrigeration circuit is monitored. The pressure difference represents the compressor displacement. The compressor is controlled by a control valve. The control valve operates based on the pressure difference. A controller compares the temperature of the passenger compartment with a temperature setting. If they differ, the controller determines a target pressure difference for the control valve. The controller computes the compressor torque based on the target pressure difference signal. The controller determines a target engine torque based on the compressor torque and controls the engine based on the target engine torque.
摘要:
A shaft sealing assembly for a compressor includes first and second lip rings, each of which is disposed around a shaft of a compressor to provide sealing. A retainer ring is disposed between the two lip rings to retain the shape of the first lip ring, which serves to allow leakage of fluid when the shaft rotates and prevent the leakage when the shaft is stopped. The three rings are held together at the radial portions of the rings. Each of the radial portions of the two lip rings extends outwardly beyond the radial portion of the retainer ring, providing an annular contact area. The two lip rings resiliently contact one another in the contact area. An annular projection is provided on at least one of the lip rings in the contact area to ensure the sealing.
摘要:
A variable capacity type compressor includes a swash plate and pistons to effect compressing action. The tilting position of the swash plate is controlled by the pressure in a control pressure chamber into which a coolant in the discharge pressure region is introduced. The pressure in the control pressure chamber is controlled by a capacity control valve mounted to the rear housing in an inclined position relative to a plane perpendicular to the axis of the rotatable drive shaft.
摘要:
The present invention provides pharmaceutical compositions containing a pyrylium compound, a thiopyrylium compound, a selenopyrylium compound or a telluropyrylium compound or a salt of any of the aforesaid compounds as active ingredient. The compounds are selectively absorbed by cancer cells or similar growths in the human or animal body and can be used to bring about distruction of the unwanted growth an irradiation with light of wavelength 600 nm to 1000 nm. The invention also provides a method for the treatment of the human or animal body which comprises administering the compound to a human or animal and irradiating a locus in said animal where the compound is absorbed in order to kill cells at that locus. It further comprises the use of the aforesaid compound for the making of a medicament for use in the treatment of cancer in humans and animals.