66results about "Positive displacement pump components" patented technology

An exemplary device and method for microfluidic transport is disclosed as providing inter alia a passive check valve (100), a fluid inlet channel (210), a fluid outlet channel (220) and a pumping cavity (240). The fluid inlet channel (210) is generally configured to flow a fluid through the check valve (100). The check valve (100) generally provides substantially passive means for preventing or otherwise decreasing the incidence of purged outlet fluid re-entering either the pumping cavity (240) or the fluid inlet channel (210). Accordingly, the reduction of backflow generally tends to enhance overall pumping performance and efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for substantially self-priming micropumps that may be readily integrated with, for example, existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.

According to the invention, an air compressor includes: one pair of air tanks arranged parallel to each other by being separated from each other in a constant interval, for storing thereinto compressed air; a compressing unit that compresses air sucked from an external space so as to supply the compressed air to the air tanks; and a motor coupled to the compressing unit so as to drive the compressing unit, while the motor and the compressing unit are arranged above the one pair of air tanks; wherein: a cooling fan that generates cooling wind is provided on one end of a rotation shaft of the motor; and a control circuit unit that drives the motor is arranged above the one pair of air tanks and at a position which is overlapped with an axial direction projection area of the cooling fan.

The invention provides a control method and system of a compressor electric heating band in an air conditioner, wherein the control method comprises the following steps of: detecting the air exhaust temperature of a compressor or the outdoor environment temperature of the air conditioner when the air conditioner is at the standby condition, and comparing the detection temperature value and the setting value, and controlling the starting and closing of the compressor electric heating band under the standby condition according to the compared result. The control system comprises a first sensor, a second sensor, a first control module, a comparison module and a relay, wherein the first sensor detects the outdoor environment temperature; the second sensor detects the compressor air exhaust temperature; the first control module enables the first or the second sensor to operate in the standby state of the compressor, and is respectively connected with the first sensor and the second sensor electrically; the comparison module is used for comparing the detection value and the setting of the first or the second sensor, and is electrically connected with signal output ends of the first sensor and the second sensor; and the relay controls the starting and closing of the electric heating band, an input end of the relay is electrically connected with a signal output end of the comparison module, and an output end of the relay is electrically connected with the electric heating band. According to the invention, the standby power consumption of the air conditioner can be lowered.

The present invention provides a linear compressor, including: a cylinder having a compression space of refrigerant therein; a piston linearly reciprocated inside the cylinder in an axis direction to compress the refrigerant; and a frame having a mounting hole so that one end of the cylinder can be mounted thereon, and also having a deformation prevention portion in some section around the mounting hole brought into contact with the one end of the cylinder. Even though the size of the cylinder is increased and the size of the frame is limited, the frame is provided with enough strength to support the cylinder, thereby reducing fastening deformations and improving operation reliability.

The attenuation system is applied to a compressor which comprises: a cylinder (2) having an end closed by a valve plate (4) provided with a discharge orifice (4a) and defining, with the cylinder (2), a compression chamber (6), a cylinder cover (5) being seated against the valve plate (4) and defining a discharge chamber (7), which communicates with the exterior of the compressor through a discharge tube (8). The attenuation system comprises: at least one intermediary chamber (10) defined in the interior of the discharge chamber (7), in order to receive, from the discharge orifice (4a), the whole discharge flow coming from the compression chamber (6); and at least one 4a connecting tube (20) mounted in the interior 4b of the discharge chamber (7), having a first end (21) open to the interior of the intermediary chamber (10) and a second end (22) open to the interior of the discharge chamber (7).

The Ring Rack Oil Pumping Machine is comprised of: a base, a frame mounted on the base, a roller mounted at the frame top, a sprocket case connects to the middle of the frame; a input shaft having a lower sprocket and a drive shaft having an upper sprocket are installed at the bottom and top of the sprocket case respectively, the upper sprocket and lower sprocket are connected by a chain; a guide wheel, track gear and centralizer wheel are mounted in sequence on the end of the drive shaft extended out of the sprocket case; the track gear meshes with a rack, a slide rail is mounted with the frame, and a sliding base (21) connected with the slide rail (20) moveably. Comparing to currently using pumping units, this invention features simple structure, high safety and reliability, upgraded efficiency, easy maintenance, smooth running and high durability.

A hermetic compressor comprises a hermetic container, an electric motor and a compressing mechanism installed inside of the hermetic container, lubricating oil and refrigerant gas enclosed within the hermetic container, a first temperature detector disposed to a predetermined location within the hermetic container, and a second temperature detector disposed to a location adjacent to a surface of the lubricating oil in the hermetic container. The predetermined location where the first temperature detector is disposed is one of a location near an upper end and another location near a lower end within a space inside the hermetic container, and an amount of the lubricating oil in the hermetic container is determined according to temperatures detected by the first temperature detector and the second temperature detector.

The automatic oil level balancing and compensating device for refrigerating compressor includes one replenishing oil box with a connected gas pipe, the first solenoid valve and one exhaust valve; and one replenishing oil pipe and one second solenoid valve connected via a connecting oil pipe to the bottom of the crankshaft box in the compressor. The gas pipe has the outer end connected to the upper part of crankshaft box in the compressor and located over the oil level line of the crankshaft box, and the inner end in the lower part of replenishing oil box and with height determining the absolute height of the oil level inside the crankshaft box. Two solenoid valves are controlled by the controller for simultaneous opening or closing. The present invention can balance and compensate the oil level inside the crankshaft box of compressor automatically, and is suitable for single compressor or united compressors.

The present invention relates to a compressor, a method for welding the fluid pipeline to the compressor outer casing and a fluid conveyer tube especially for the hermetic compressor, which substitutes the brass welding process, and directly sold the fluid circulation pipeline to the compressor outer casing. The hermetic compressor includes an outer shell (5) and a fluid conveyer tube (9), the fluid conveyer tube traverses the outer shell (5) through the channel hole (10), the fluid conveyer tube (9) includes a weldable connecting mechanism (11), the weldable connecting mechanism (11) is composed of a diameter broadening part of the fluid conveyer tube (9), the diameter broadening part is provided with a diameter which is bigger than the diameter of the channel hole (10), and is constructed along the length, and the weldable connecting device (11) is straightly soldered near the boundary (12') of the channel orifice (10). The present invention also describes a method for welding the fluid pipeline to the compressor outer casing and a fluid conveyer tube especially for the hermetic compressor.

The invention belongs to the technical field of energy storage systems, and particularly relates to an advanced distributed multi-generation compressed air energy storage system and an application method. The compressed air energy storage system is a distributed multi-generation system, and comprises a power supply module, a cool supply module and a heat supply module, the compressed air energy storage system is further provided with a turbine, wherein the turbine is adjusted to enable the power supply module, the cool supply module and the heat supply module to switch between working modes ofthe modules. According to different season load requirements of users, the temperature of a turbine inlet in the compressed air energy storage system is adjusted, the system can provide cool, heat and electric loads at different seasons for the users, so that the load requirements of the users at of different seasons are met, various grade energy in the compressed air energy storage system is fully utilized, and the cost is reduced; and meanwhile, the energy utilization rate is increased.

A bike repair stand includes a stand column, a leg mechanism including a slider, two first links, and two second links. The slider is able to slide on the stand column. Each of the two first links is pivotally joined to the slider and has an end adapted to abut the ground. Each of the two second links is pivotally joined to the stand column and one of the first links. A head seat is located on the stand column. A support mechanism includes a pole and two support levers. The pole is able to slide on the head seat. The two support levers are respectively fixed to two ends of an axle. The two support levers are pivotal with respect to the pole about the axle.

A system for controlling solids within a wellbore of a well includes a pump positioned within a substantially horizontal portion of the wellbore. A first tubing string is operatively connected between the pump and a surface of the well for removing liquid from the wellbore that is pumped by the pump. A second tubing string may also be operatively connected to the pump and extends downhole of the pump. Either or both of the first and second tubing string includes a longitudinal axis that is offset from an axis of rotation about which the second tubing string is capable of being rotated.

The invention discloses an elastic compaction mechanism of an air cylinder and a valve plate assembly for a refrigeration compressor. The mechanism comprises a crankshaft box, a valve plate gasket, a valve plate assembly, an elastic gasket, a screw threaded sleeve, an air cylinder cover gasket, an air cylinder cover, a clamping ring, a gas exhaust silencer and an air absorption silencer; the crankshaft is provided with the air cylinder; the elastic gasket is fixedly connected to the external surface of the valve plate assembly; the outer side of the end part of the air cylinder is provided with external screw threads; the inner side of the end part of the air cylinder is provided with a step hole; the screw threaded sleeve is provided with inner screw threads; after the valve plate gasket, the valve plate assembly and the elastic gasket are guided into the air cylinder step hole, the screw threaded sleeve is compacted externally and is fixedly connected with the air cylinder through the inner screw threads. Through the elastic compaction mechanism provided by the invention, not only can the seal property of the air cylinder and the valve plate assembly be ensured, but also the air cylinder deformation can be reduced effectively, thus the efficiency of the compressor is improved.

The invention relates to an inflator structure. A folding space is arranged in an inflation rod of the inflator structure, and is used for positioning or separating a hose with double-specification charging connectors from one end of the inflation rod; a valve seat at the bottom part of the inflation rod is connected with the hose; one end of the hose is provided with a joint seat and a muff-coupling block; the rotary charging connectors at both ends of the hose with the double-specification charging connectors can be respectively connected with the joint seat; the muff-coupling block is used for casing the hose with the double-specification rotary charging connectors onto the rotary charging connectors to be positioned after the hose is positioned at one end of the inflation rod, so that the hose is cased and supported by the muff-coupling block to be positioned at one side of the inflator structure after being folded; and the hose with the double-specification charging connectors can be correspondingly replaced and connected onto the joint seat for matching according to different specifications of a cranked tire valve. Simultaneously, the inflator structure has an effect of prolonging length, thereby, the inflator structure has a reduced occupied size when being stored, and the inflator structure is convenient to fold.

An electric compressor for a vehicle includes a compressor case, an inverter circuit, an inverter case, and a lid that closes an opening of the inverter case. The electric compressor further includes a seal component interposed between the inverter case and the lid to seal between the inverter case and the lid. The electric compressor further includes a conductive component. The conductive component transmits an electromagnetic wave noise from the inverter case to at least one of the compressor case and the lid, the electromagnetic wave noise propagating from the inverter circuit to the inverter case when the inverter circuit provides the electric current through the electric motor.

A pump-priming device configured to fit within the pump inlet circuit formed in the valve body of an automatic transmission is disclosed. The present pump priming device comprises a fluid-conducting structure having a fluid inlet and a fluid outlet, which is fabricated from sheet metal or flexible tubing and is designed to be installed within the original equipment manufacture valve body as a drop-in-place component. The present pump priming device diverts the flow of automatic transmission fluid (i.e. regulator exhaust fluid) released by the pressure regulator valve, which under normal operating conditions would flow from the pressure regulator valve back to the sump, and to redirect such flow of regulator exhaust fluid back to the pump inlet. Such redirection of regulator exhaust fluid pressurizes the pump inlet circuit and raises the output of the pump to provide adequate transmission fluid flow within the hydraulic system at low engine speeds.

The invention discloses an oil scraper ring, which comprises a circular body. An oil storage groove is formed in the upper end part of the body. The inner wall of the body is a scraping wall. The outer wall of the body is a retaining wall which is higher than the scraping wall. According to the scheme, the retaining wall is higher than the scraping wall, and when the oil scraper ring rotates along with a piston or a piston rod, lubricating oil in the oil storage groove can be prevented from being splashed from the oil storage groove under centrifugal force generated by rotation; and in addition, the bottom surface of the oil storage groove is an inclined surface, and the bottom surface close to the retaining wall is lower than the bottom surface close to the scraping wall, so that the center of gravity of the lubricating oil in the oil storage groove is close to the retaining wall, and the oil scraper ring difficultly rotates or rotates at low speed to favorably prevent the lubricating oil from being splashed from the oil storage groove. According to the scheme, scraped lubricating oil cannot flow out of the oil storage groove, so that the backflow of the lubricating oil is effectively prevented, and an oil leakage phenomenon is avoided to reduce the oil content of air in a piston type air compressor and ensure the purity of the air in the piston type air compressor.

A piston assembling apparatus includes a piston holding means including a guide tube portion which contains the piston and guides the piston into the cylinder bore. A guide tube support portion supports the guide tube portion to be displaceable in a radial direction thereof. A moving means moves at least one of the piston holding means and the cylinder block so as to locate them at an insertion preparation position where the guide tube portion and the cylinder bore are coaxial with each other. A pressing means presses the piston contained in the guide tube portion toward the cylinder block to insert the piston into the cylinder bore in a state in which the piston holding means and the cylinder block are located at the insertion preparation position, and the guide tube portion is supported by the guide tube support portion to be displaceable in the radial direction thereof.

The invention relates to the field of engine assembly, in particular to an engine bearing bush assembling technology. The technology comprises the following steps that two-dimensional codes on an engine cylinder body and the rear end of a crankshaft are scanned through a two-dimensional code scanning gun; an intelligent control center conducts calculation and comparison according to cylinder body information and crankshaft information which are sent by the two-dimensional code scanning gun connected with the intelligent control center, a bush selection result is obtained, and a light shining prompt on an intelligent material rack starts to be conducted; main bearing bushes are taken according to an intelligent material rack green light shining prompt, and the main bearing bushes are installed in the cylinder body and a main bearing cover through a main bearing bush installation tool; main bearing bush installation information is fed back to the intelligent control center through a main bearing bush installation tool sensor, and a green light continuously shines on the intelligent material rack to prompt a next group of main bearing bushes needing to be installed; all the steps are repeated till all main bearing bushes are completely installed. According to the engine bearing bush assembling technology, assembly of selected assembly parts of an engine is completed accurately and rapidly, misoperation is prevented, and the production efficiency is improved.

The invention relates to an oilless air compressor, in particular to an external heat dissipation portable oilless air compressor. The invention provides an external heat dissipation portable oil-free air compressor which is relatively simple in structure, relatively low in manufacturing cost of the oil-free air compressor and relatively high in heat dissipation effect. An external heat dissipation portable oilless air compressor comprises two supporting frames, an air compressor body, a filter element and the like, the air compressor body is installed between the tops of the two supporting frames, and the front side of the air compressor body is connected with the filter element in a clamped mode. The air purifier has the beneficial effects that dust in air can be filtered under the filtering action of the filter element, and the air compressor can compress the filtered air into the air tank to be stored; a worker can pull the grip to swing by hand, so that the driving plate can drive the first sliding frame and the piston to slide, the water tank can be pressurized, cooling liquid in the water tank can be sprayed on the surface of the oilless air compressor through the nozzle, and the purpose of cooling and heat dissipation of the oilless air compressor is achieved.

A connector (24) and method of connecting a compressor assembly (10) that increases the pressure of a fluid are described. The compressor assembly (10) includes cylinders (12a,b), crank shaft housings (18a,b), and a motor housing (22). The connector (24) is disposed between the cylinders (12a,b) and the crank shaft housing (18a,b) and configured to engage the cylinders (12a,b) such that vibration during operation of the compressor assembly is reduced through the placement of the connector (24) corresponding to a center of gravity of the compressor assembly (10). The connector may also be used by the compressor assembly as a heat sink, inlet, mount, filter, and/or to provide other functions that improve the operation of compressor assembly.

The invention discloses an oxygen production compressor preheating device which comprises a heating ring and a temperature sensor which are respectively sleeved on the outside of a cylinder of a compressor, wherein the heating ring is in O-shaped circular structure design, the temperature sensor is located between the heating ring and the cylinder or outside the heating ring, the heating ring and the temperature sensor are respectively connected with a main control board, the main control board is used for controlling start and stop of the heating ring, and preheating treatment is carried out on the oxygen production compressor by arranging the oxygen production compressor preheating device on the oxygen production compressor. The oxygen production compressor preheating device is simple in structure, low in cost and convenient to install, effectively avoids starting difficulty of the oxygen production compressor in winter or low-temperature environments, effectively avoids wear and tear of core parts such as a leather cup and the cylinder of the oxygen production compressor, and effectively prolongs the life of the compressor.