摘要:
Provided is a sliding vane control structure for a variable-capacity cylinder, including a pin (113, 213) provided on a lower side of a sliding vane (11), the pin (113, 213) having a first position capable of stopping the sliding vane (11) and a second position capable of being separated from the sliding vane (11), wherein a low-pressure passage (115, 215) is provided under the pin (113, 213); and a surface seal structure is provided between the pin (113, 213) and the low-pressure passage (115, 215), and when the pin (113, 213) is at the second position, a surface seal is formed at a lower end of the pin (113, 213). Since the sliding vane control structure is provided with a surface seal structure, a seal effect of the surface seal is much better than that of a clearance seal, thereby greatly reducing a leakage of a refrigerant. Consequently, an efficiency of a compressor is increased when a variable-capacity cylinder is in a working mode, and a performance of the compressor is optimized. Also provided is the variable-capacity cylinder with the sliding vane control structure and a variable-capacity compressor.
摘要:
There is provided an electric compressor capable of being actuated rapidly. During the time when the operation of an automotive air conditioner is stopped, by heating a motor 12, a refrigerant on the outlet side 11b of a compressor body 11 is heated. Thereby, the temperature of refrigerant on the outlet side 11b is raised, and the refrigerant is prevented from being liquefied on the outlet side 11b of the compressor body 11, by which the automotive air conditioner can be actuated rapidly. Besides, by rotating the motor 12 at the number of revolutions lower than that at the time of normal operation, the refrigerant liquefied on the outlet side 11b of the compressor body 11 may be pushed out.
摘要:
A vane pump that employs one or more less restricted vanes (or looser vanes) within its rotor is described herein. The less restricted vane(s) are configured to radially move outwardly before the remaining vanes during startup. In one case, for example, at least one vane has a different thickness (e.g., thinner) as compared to the thickness of the remaining vanes. In another case, at least one slot has a different width (e.g., wider) as compared to the width of the other slots. The less restricted vane facilitates a cold start in highly viscous oil by allowing easier radial displacement and thus earlier initial build-up of pressure in the pump. The pump may be used with an engine or transmission.
摘要:
An air conditioning machine is provided by which a refrigerant collected into an outdoor heat exchanger can be suppressed from counter-flowing through a discharge hole of a compressor toward a side of an indoor heat exchanger in a refrigerant circuit after an end of a pump down operation. The air conditioning machine includes a refrigerant circuit 100, a refrigerant leakage sensing unit 95 that senses leakage of the flammable refrigerant from the refrigerant circuit 100, and a pump down operation control unit 931 that carries out the pump down operation for accumulating the flammable refrigerant in the outdoor heat exchanger 103 in the refrigerant circuit 100 when the refrigerant leakage sensing unit 95 senses the leakage of the flammable refrigerant. The compressor 101 includes a cylinder chamber, a compression member that is placed in the cylinder chamber and that compresses the flammable refrigerant, and a discharge hole through which the flammable refrigerant compressed in the cylinder chamber is discharged. At the end of the pump down operation, the pump down operation control unit 931 controls the compressor 101 so that the compression member stops at a position where the compression member overlaps at least a portion of the discharge hole when viewed in an axial direction of the cylinder chamber.
摘要:
A medium-frequency hermetically sealed refrigerant compressor capable of unloading during start, comprising: an electric connector (2), a front end socket (1), a rear end socket (6), a barrel (7), a medium-frequency motor (3) disposed in the barrel (7), a movable disc (4), a motion transmission sleeve (8), a main shaft (9), a clutch coil (10) and a clutch friction plate (11); the front and back ends of the barrel (7) are respectively connected to the front end socket (1) and the rear end socket (6); the barrel (7) has a stator disc (5) fixed therein cooperating with the movable disc (4); the movable disc (4) and the stator disc (5) are sleeved on one side of the main shaft (9), and the clutch friction plate (11) and the clutch coil (10) are sleeved on another side of the main shaft (9); the movable disc (4) and the clutch friction plate (11) are fixed on a side surface of the main shaft (9); the output shaft of the medium-frequency motor (3) is connected to the clutch coil (10) via the motion transmission sleeve (8); the electric connector (2) is fixed on the barrel (7); and the electric connector (2) is connected to the clutch coil (10). The compressor achieves a low current start, and reduces the impact against the on-board power supply.
摘要:
A compressor device comprising a compressor element with a housing with, an inlet and an outlet. At least one rotor is affixed in the housing that is provided with a drive. The compressor device is provided with an oil circuit for injecting oil into the housing. The oil circuit only comprises one pump for driving the oil around in the oil circuit. This pump is coupled to a first shaft via a first disengageable coupling, more specifically a shaft of the aforementioned drive on the one hand, and to a second shaft via a second disengageable coupling, more specifically a shaft of a secondary drive on the other hand. The first and second disengageable couplings between the pump and the first shaft and between the pump and the second shaft are such that the pump is only driven by the shaft of these two shafts that has the highest speed.
摘要:
Ein Gaseinlassventil (1) für einen Kompressor (64), mit: einem Gehäuse (2); einer zwischen einem Gaseinlassabschnitt (3) und einem Gasauslassabschnitt (4) angeordneten Ventileinrichtung (6), wobei ein Ventilkörper (57) in einem geschlossenen Betriebszustand der Ventileinrichtung (6) an einem Ventilsitz (56) dichtend anliegt, und wobei der Ventilkörper (57) in einem geöffneten Betriebszustand der Ventileinrichtung (6) von dem Ventilsitz (56) abgehoben ist; einer Kolbeneinrichtung (42), welche einen ersten Kolbenabschnitt (43) und einen sich von dem ersten Kolbenabschnitt (43) unterscheidenden zweiten Kolbenabschnitt (44) aufweist, wobei der erste Kolbenabschnitt (43) in einem ersten Zylinderabschnitt (22) des Gehäuses (2) und der zweite Kolbenabschnitt (44) in einem sich von dem ersten zylinderabschnitt (22) unterscheidenden zweiten Zylinderabschnitt (27) des Gehäuses (2) verschieblich geführt ist; und einer in dem Gehäuse (2) verschieblich gelagerten Kolbenstange (38) welche den Ventilkörper (57) der Ventileinrichtung (6) mit der Kolbeneinrichtung (38) mechanisch koppelt, wobei eine Fluidleitung (39) eine erste Zylinderkammer (49) des ersten Zylinderabschnittes (22) mit dem Gasauslassabschnitt (4) fluidisch wirkverbindet, wobei zum Abheben des Ventilkörpers (57) von dem Ventilsitz (56) eine zweite Zylinderkammer (52) des zweiten zylinderabschnittes (27) mit einem Steuerdruck beaufschlagbar ist. Ein Rotationsverdichter, mit einem derartigen Gaseinlassventil (1) sowie ein Verfahren zum Betreiben eines Kompressors (64), insbesondere eines Rotationsverdichters, mit einem derartigen Gaseinlassventil (1).
摘要:
The invention relates to a vacuum pump, particularly a rotary vane pump, having a pump housing (10) which is arranged in a suction chamber (12). A conveying element (14, 16) is arranged in the suction chamber (12). According to the invention, there is a non-return valve (28) at an inlet (22) of the suction chamber (12). To close the non-return valve (28) in the case of prevailing low pressures in the region of the inlet (22), a fluid device (36) is arranged adjacent to a spiral spring (34). Upon deactivation of the vacuum pump, a switch piston (40) is moved to a position in which fluid flows through the feed channel (42) into the connection channel (38), so that the non-return valve (28) closes via the flowing into the inlet channel (42).