A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.

An apparatus may include a reservoir; a stopper dividing the reservoir; a water fill pipe configured to provide the water to a lower portion of the reservoir; and an outlet pipe connected to the lower portion of the reservoir. The apparatus may further include a compressed air feed pipe which may provide compressed air to an upper portion of the reservoir to press on the stopper so that the water is forced by the stopper to escape from the lower portion of the reservoir through the outlet pipe. A processor included in the apparatus may be configured to determine a water pumping rate of the water while the water escapes through the outlet pipe, and to control the compressed air feed pipe to provide the compressed air at an air pumping rate equal to the water pumping rate.

A suction damping device for a variable displacement compressor includes a rotor rotatably received within a stator disposed in a suction port of the variable displacement compressor. The rotor includes an aperture and the stator includes a pair of opposing openings in selective fluid communication with the aperture of the rotor. An electromagnetic device controls a rotational position of the rotor relative to the stator based on a condition of an electrically controlled valve used to control an angle of inclination of a swashplate of the variable displacement compressor. A changing of the rotational position of the rotor relative to the stator causes a variable overlap to be formed between the aperture of the rotor and the openings of the stator to control a flow of a refrigerant through the suction damping device.

An electric pump device includes a single motor, a pump that discharges fluid from a discharge port with driving force of the motor, and a flow passage switch that includes outlets configured to be in communication with the discharge port and switches an outlet of the outlets that is in communication with the discharge port with driving force of the motor.

A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system.

A cartridge assembly comprises a housing having an illumination chamber and a well plate. The well plate is maintained within the housing and has liquid wells to receive desired amounts of liquids. The well plate includes a fluidics analysis station aligned with the illumination chamber, and an interface window and interface ports located at the fluidics analysis station. The well plate includes a valve station and pump station. A piercer unit is provided in the housing and positioned proximate to the wells. The piercer unit includes a piercer element and is to be moved to a piercing position where the piercer element pierces a cover for the corresponding well. A pump assembly on the well plate at the pump station manages fluid flow through the channels between the pump station and the fluidics analysis station. The housing includes a flow cell chamber to receive a removable flow cell cartridge.

A cartridge assembly comprises a housing having an illumination chamber and a well plate. The well plate is maintained within the housing and has liquid wells to receive desired amounts of liquids. The well plate includes a fluidics analysis station aligned with the illumination chamber, and an interface window and interface ports located at the fluidics analysis station. The well plate includes a valve station and pump station. A piercer unit is provided in the housing and positioned proximate to the wells. The piercer unit includes a piercer element and is to be moved to a piercing position where the piercer element pierces a cover for the corresponding well. A pump assembly on the well plate at the pump station manages fluid flow through the channels between the pump station and the fluidics analysis station. The housing includes a flow cell chamber to receive a removable flow cell cartridge.

A liquid delivery device includes at least one liquid delivery pump that delivers liquid, at least one main channel communicating with an outlet of the liquid delivery pump, at least one branch channel branched from the main channel, and a switching valve that has, as a port for connecting channels, at least a port to which the main channel is connected, a port to which the branch channel is connected, at least one output port for outputting liquid delivered by the liquid delivery pump through the main channel, and at least one drain port leading to a drain, and is configured to be selectively switched to a first state, in which the main channel is connected to the output port while the branch channel is not connected to any channel, and a second state in which the branch channel is connected to the drain port while the main channel is not connected to any channel.

A plunger pump includes a cylinder having a cylinder chamber, and a first through hole and a second through hole that open from an inner circumferential surface toward an outer circumferential surface of the cylinder chamber, and a plunger inserted in the cylinder chamber and configured to make a reciprocating motion with respect to the cylinder chamber. An inner circumferential portion of the cylinder has an inner circumferential surface, and a helical first groove portion on the inner circumferential surface, the helical first groove portion being configured to communicate with at least one of the first through hole and the second through hole.

Plunger pump includes cylinder having inside cylinder chamber; plunger disposed in cylinder to be relatively movable forward and backward to cylinder chamber so outer plunger's circumferential face is in slide contact with cylinder's inner circumferential face, and having cut face on distal end's outer periphery; and suction and discharge ports provided to cylinder to communicate with cylinder chamber, plunger pump transferring fluid by reciprocating plunger in axial direction while rotating plunger relative to cylinder chamber to let suction and discharges ports alternately communicate with cylinder chamber, wherein cylinder includes cylinder main body and spacer section being disposed in cylinder main body's inner portion of proximal end side, and sliding against plunger's portion closer to proximal end side than portion of plunger advancing and retracting into cylinder chamber, and plunger pump further includes seal section provided on cylinder's proximal end side for sealing cylinder main body, plunger and spacer section.