6126results about "Rotary/oscillating piston pump components" patented technology

An example gear pump includes a pump housing having a pump housing channel and an arcuate groove disposed in an interior surface of the pump housing; a pump ring gear disposed within the pump housing and rotatable relative to the pump housing; a pump pinion disposed within the pump ring gear, such that teeth of the pump pinion engage with internal teeth of the pump ring gear; and a pump port block having a first port and a second port, wherein as the pump pinion rotates within the pump ring gear, fluid is drawn through the first port and provided to the second port for discharge, wherein a portion of fluid being provided to the second port is provided to the pump housing channel, wherein fluid from the pump housing channel is provided to the arcuate groove to apply a radially-inward force on the pump ring gear.

A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.

A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated.

Assemblies, apparatuses, and methods to extract or convey a material from a source of the material may include a vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may include a compressor housing having a vacuum source, a cooling system, and a vacuum controller. The vacuum source may include a compressor powered by an electric motor and positioned to cause a vacuum flow between the source of the material, and the vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may further include a sound attenuation chamber positioned to receive at least a portion of the vacuum flow from, and attenuate sound generated by, the vacuum source. The compressor housing and sound attenuation chamber of the vacuum generation and sound attenuation assembly may be arranged compactly on a common chassis for ease of transport and deployment.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, two end points on the bottom wall of the same magnetism adjusting groove are respectively a point C and a point D, the arc length of the shortest arc between the point C and the point D and taking the circle center of a rotor punching sheet as the circle center is Sr, the number of poles of a rotor is 2P, the included angle between the first groove wall and the center line of the magnetic steel groove of the corresponding group is alpha, the average angle number of each pole of the rotor is beta, the two end points of the two ends of the side wall of the side, facing the air gap, of the tooth shoe part are a point A and a point B respectively, the arc length of the shortest arc, with the circle center of the stator as the circle center, between the point A and the point B is St, 1.28 mm < = 1.56 mm, and 0.4 degree < = 1.56 mm. According to the technical scheme provided by the invention, the torque ripple of the motor is reduced, the noise of the motor is reduced, and the energy efficiency of the motor is improved.

The invention discloses a high-pressure type oil-free scroll compressor which comprises a compressor body composed of a first static scroll plate, a first dynamic scroll plate, a second dynamic scroll plate and a second static scroll plate, and the back face of the first dynamic scroll plate and the back face of the second dynamic scroll plate are arranged in an attached mode. The front face of the first orbiting scroll and the front face of the second orbiting scroll are meshed with the back face of the first static scroll and the back face of the second static scroll respectively, and the orbiting scrolls and the static scrolls are matched with each other to form a compression cavity. The scroll compressor further comprises four eccentric pins, an eccentric pin eccentric section is integrally formed in the middle of the outer surface of each eccentric pin, and the eccentric pin eccentric sections of the four eccentric pins are rotationally connected to the four corners of the first movable scroll plate and the four corners of the second movable scroll plate through movable plate bearings respectively. The oil-free scroll air compressor solves the problem that the exhaust pressure of the oil-free scroll air compressor is difficult to reach 1.2 Mpa or above.

The compressor comprises a shell, a pump body assembly and a motor, the pump body assembly is arranged in the shell, a stator assembly of the motor is fixedly connected with the inner wall of the circumferential shell, and a rotor assembly of the motor is located in an annular space of the stator assembly and connected with a crankshaft. The oil baffle cap is located at the uppermost end of the rotor assembly and can conduct oil-gas separation on mixed gas from the pump body assembly. The height of the flanging structure of the oil baffle cap is h, the height between the upper end face of the circumferential shell and the upper end face of the stator core in the vertical direction is the height H of an upper cavity of the shell, and the nominal working volume of the compressor is V. According to the compressor, the value of H * h / V is reasonably set to be within the range of (0.97-3.53) * 10 <-2 > mm <-1 >, the flowing resistance of airflow and the separation efficiency of lubricating oil can be balanced, and the working efficiency of the compressor is improved. Therefore, the operation performance and reliability of the compressor are improved, meanwhile, the situation that the size of the compressor is too large is avoided, and the compact design of the compressor structure is facilitated.

A scroll compressor includes a rotary shaft, an eccentric shaft that is eccentric with respect to an axis of the rotary shaft, a bushing that receives the eccentric shaft, and a shaft balancer that rotates integrally with the rotary shaft. The bushing includes a bushing balancer. The shaft balancer includes a first section and a second section. When viewed in the axial direction of the rotary shaft, the first section is located on the same side of a second straight line as the center of gravity of the bushing balancer. The second straight line contains the center of gravity of the shaft balancer and the axis of the rotary shaft. The second section is located on an opposite side of the second straight line from the center of gravity of the bushing balancer. The stiffness of the first section is lower than the stiffness of the second section.

A progressive cavity pump rotor can include a scroll portion, which can be configured to interface with a stator, and a head portion, which can be configured to be coupled to a coupling rod with a non-collinear joint, where the scroll portion can be releasably coupled to the head portion with a collinear joint.

An electric scroll compressor configured to compress a refrigerant for use with a vapor injection system, is provided. The compressor includes refrigerant inlet and outlet ports and a vapor injection port. The housing includes a vapor injection cavity and at least one vapor injection channel which are integral therewith. A compression device includes a fixed scroll and an orbiting scroll. The orbiting scroll and the fixed scroll form compression chambers for receiving the refrigerant from the intake volume and compressing the refrigerant as the drive shaft is rotated about the center axis. The fixed scroll includes at least one vapor outlet aperture in communication with the at least one vapor injection channel for allowing vapor to enter a compression chamber formed between the fixed scroll and the orbiting scroll.

Scroll vacuum pump with a pumping system (11, 13) comprising a fixed spiral component (11) and a movable spiral component (13) cooperating with the latter for pumping purposes, and a drive shaft (17) rotating about a rotational axis (15) during operation, having an eccentric section (19) for driving the movable spiral component (13), and a method for operating such a scroll vacuum pump.

The invention provides a manufacturing method of a compressor slip sheet, the compressor slip sheet is provided with a sliding surface in sliding connection with a compressor cylinder body and a hinge part for hinging a compressor piston, and the compressor slip sheet is used for realizing eccentric rotation of the compressor piston and a crankshaft and realizing air compression, and the manufacturing method comprises the following steps: preparing a slip sheet body; the thickness of the slip sheet body is 2.8 mm to 4.5 mm, and the slip sheet body is provided with a first plane used for machining a sliding surface and second planes located at the two axial ends of the hinge part; the first plane is ground; feeding from the first plane of the slip sheet body, carrying out at least one time of linear cutting according to the target track of the hinged part to obtain the hinged part, and enabling the diameter range of the hinged part to be 1.5 mm to 3.5 mm; the second plane is subjected to accurate grinding treatment; and inspecting the surface of the slip sheet body, processing edges, and cleaning to obtain the compressor slip sheet. The problems that the size precision of the hinged end of the sliding vane does not meet the requirement, high-speed and smooth rotation is difficult, and noise is easily generated due to vibration are solved.

The invention relates to the technical field of logistics warehouse storage equipment, in particular to a speed reduction control method for a high-speed motor driven hydraulic system, which comprises the following steps: S1, the output torque of a high-speed motor is transmitted to a gear pump through a motor shaft, a planetary reducer and a planet carrier in sequence to drive the gear pump to work; s2, acquiring a three-phase current instantaneous signal and a direct current bus voltage signal, and performing preprocessing and frequency spectrum conversion to determine a current frequency spectrum; s3, in the current frequency spectrum, extracting an energy value in a preset frequency band with the meshing frequency and harmonic waves of the planetary gear as the center, and calculating to obtain a disturbance characterization value of the planetary gear; s4, determining a torque smooth adjustment coefficient according to the planet wheel disturbance characterization value; and S5, dynamically adjusting a dynamic response parameter of a torque control ring of the high-speed motor according to the torque smooth adjustment coefficient. The problems that in the prior art, a high-rotating-speed motor and a hydraulic pump are not matched in rotating speed, and mechanical disturbance is difficult to restrain are solved.

The invention provides a compressor pressure relief structure, a compressor and an air conditioner. The compressor pressure relief structure comprises a first-stage compression assembly and a second-stage compression assembly. A first pressure relief channel is formed in the partition plate assembly, an assembly avoiding groove and a second pressure relief channel are formed in the second-stage air cylinder, at least part of structure of an opening and closing element is arranged in the assembly avoiding groove, and the opening and closing element can move in the assembly avoiding groove and the second pressure relief channel so that the second pressure relief channel can be communicated with or disconnected from the first pressure relief channel; the opening and closing element comprises a first end and a second end which are opposite to each other, the first end is opposite to the first pressure relief channel so as to bear the gas pressure of the first pressure relief channel, the second-stage air cylinder is further provided with a first back pressure channel, and the first back pressure channel can introduce exhaust gas of the compressor into the assembly avoiding groove; and the pressure acts on the second end so as to apply pressure to the second end. According to the compressor, the technical problem that in the prior art, a rivet pressure relief valve plate structure is adopted for a compressor, and flutter occurs can be solved.

The invention provides a fluid machine with a bearing and heat exchange equipment. The fluid machine with the bearing comprises a crankshaft, a cylinder sleeve, the bearing, a cross groove structure and a sliding block, and the crankshaft is provided with two eccentric parts; the crankshaft and the cylinder sleeve are eccentrically arranged and the eccentric distance is fixed; the at least one bearing is arranged on the axial end surface of the cylinder sleeve and is positioned on the outer side of the cylinder sleeve; the cross groove structure is rotatably arranged in the cylinder sleeve, the axial part of the outer circumferential surface of the cross groove structure is attached to an inner ring of the bearing, two limiting channels of the cross groove structure are sequentially arranged in the axial direction of the crankshaft, and the extending direction of the limiting channels is perpendicular to the axial direction of the crankshaft; the sliding blocks are provided with through holes, the two eccentric parts correspondingly stretch into the two through holes of the two sliding blocks, and the two sliding blocks are correspondingly arranged in the two limiting channels in a sliding mode and form a variable volume cavity. The problems that in the prior art, a compressor is low in energy efficiency and large in noise are solved.

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. The shell is provided with an accommodating cavity; the motor is arranged in the containing cavity and comprises a rotor and a stator arranged on the periphery of the rotor in a sleeving mode. The pump body assembly is arranged in the containing cavity, the pump body assembly comprises a crankshaft, a static scroll plate, a movable scroll plate and a support, the crankshaft sequentially penetrates through the support, the movable scroll plate, the static scroll plate and the motor, the crankshaft comprises an eccentric section, and the movable scroll plate is arranged on the eccentric section in a sleeving mode; the outer diameter D of the stator and the outer diameter D1 of the eccentric section meet the relational expression that D / D1 is larger than or equal to 5 and smaller than or equal to 7. The problem that in the prior art, a crankshaft of a scroll compressor is low in reliability can be solved.

This invention provides a fluid machine and heat exchange device with bearings. The fluid machine with bearings includes a crankshaft, a cylinder liner, bearings, a cross-groove structure, and sliders. The crankshaft has two eccentric portions; the crankshaft and cylinder liner are eccentrically arranged with a fixed eccentric distance; there is at least one bearing, which is located inside the cylinder liner at the axial end of the cylinder liner, and the outer ring of the bearing is in contact with the inner wall of the cylinder liner; the cross-groove structure is rotatably arranged inside the cylinder liner, and the outer circumferential surface of the cross-groove structure is in contact with the inner ring of the bearing; two limiting channels of the cross-groove structure are sequentially arranged along the axial direction of the crankshaft, and the extension direction of the limiting channels is perpendicular to the axial direction of the crankshaft; the sliders have through holes, and there are two sliders. The two eccentric portions extend into the two through holes of the two sliders respectively, and the two sliders are slidably arranged in the two limiting channels to form a variable volume cavity. This invention solves the problems of low energy efficiency and high noise in existing compressors.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

The invention discloses a pump body assembly, a compressor and refrigeration equipment, and relates to the technical field of compressors, the pump body assembly comprises an air cylinder, a pump body, a pump body, a pump body, a pump body and a pump body, and the air cylinder is provided with a working cavity and a sliding groove communicated with the working cavity; the piston is eccentrically and rotatably arranged in the working cavity; the sliding piece comprises a sliding piece body and a hinge portion arranged at one end of the sliding piece body, the sliding piece body is arranged in the sliding groove in a sliding mode, the hinge portion is hinged to the piston and provided with a first opposite-grinding face, the piston is provided with a second opposite-grinding face in contact with the first opposite-grinding face, and the second opposite-grinding face is provided with a second opposite-grinding face in contact with the second opposite-grinding face. The surface hardness of the first counter-grinding surface is at least 30% higher than that of the second counter-grinding surface. According to the technical scheme, adhesive abrasion can be effectively reduced, and the problem that abrasion of a hinge structure is aggravated is solved.

Assemblies, apparatuses, and methods to extract or convey a material from a source of the material may include a vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may include a compressor housing having a vacuum source, a cooling system, and a vacuum controller. The vacuum source may include a compressor powered by an electric motor and positioned to cause a vacuum flow between the source of the material, and the vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may further include a sound attenuation chamber positioned to receive at least a portion of the vacuum flow from, and attenuate sound generated by, the vacuum source. The compressor housing and sound attenuation chamber of the vacuum generation and sound attenuation assembly may be arranged compactly on a common chassis for ease of transport and deployment.

The utility model discloses an axial compensation spring structure of a fixed scroll floating compressor, and relates to the technical field of compressors, in particular to the axial compensation spring structure of the fixed scroll floating compressor. The vortex compressor comprises a movable vortex and a fixed vortex which is arranged above the movable vortex and matched with the movable vortex, wherein vortex blades of the movable vortex and the fixed vortex are matched with each other to form a compression chamber; a high-low pressure isolation assembly is assembled above the fixed vortex; a spring device capable of compensating is arranged between the fixed vortex and the high-low pressure isolation assembly; the spring device is one of a middle pressure cavity inner spring device, a high-pressure cavity side spring device and a low-pressure cavity side spring device; one or more spring devices can be arranged. According to the technical scheme of the utility model, the problems of high management cost, part storage and the like caused by assembling and setting the matching level between the fixed vortex and the high-low pressure isolation plate in the prior art are solved.

This invention relates to the field of vacuum pump testing technology, specifically to a rotor temperature control system and method for a Roots vacuum pump, comprising a pump body, a rotor assembly, a temperature measurement system, a heating system, a cooling system, and an electronic control system. The temperature measurement system includes a wireless temperature sensor that measures the temperature of the rotor assembly and transmits the temperature signal to the electronic control system. The heating system is located at the pump body's inlet. The inner cavity of the rotor shaft of the rotor assembly is connected to the cooling system. The cooling system is electrically connected to the electronic control system. By adding a cooling system, and connecting it to the hollow rotor shaft, more heat can be removed. Simultaneously, a heating system is provided to heat the medium entering the pump body. Both the heating and cooling systems are connected to the electronic control system, which allows for precise temperature control of the rotor assembly and the internal temperature of the Roots pump cavity.

Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; and at least two screws (4, 5, 6) housed in the flow chamber to 5 force a fluid flow through the flow chamber from the inlet to the outlet; wherein the casing (3) comprises a shell (33) within which an insert (34) defining the flow chamber is housed.

The invention relates to the design and assembly of the stator, stator casing and stator assembly cover used in progressive cavity pumps (PCP) which can pump all liquids, liquid-solid or liquid-gas mixtures even if they have different density, concentration and viscosity values in different industries such as petroleum, food, wastewater treatment.

An oil baffle assembly, a rotor assembly and a compressor. The oil baffle assembly comprises: a first-stage oil baffle (1), wherein a flange (11), a first counterweight (12) and a plurality of support columns (13) are provided on the side of the first-stage oil baffle (1) that faces a rotor core (3), the flange (11) is configured to accommodate an end portion of a crankshaft (7), mounting holes (14) are provided in the first counterweight (12) and the support columns (13), and a connecting member (8) connects the first-stage oil baffle (1) to the rotor core (3) by means of the mounting holes (14); and a second-stage oil baffle (2) which is arranged on the side of the first-stage oil baffle (1) that faces away from the rotor core (3). The oil baffle assembly enlarges the coverage space of a rotational flow field in radial and axial directions, and can enable frozen oil dissolved in gas to be separated out in a large proportion and flow back into a compressor oil pool, thereby improving an oil-gas separation effect of an oil-gas separation baffle.

The utility model relates to a cross slip ring assembly and a scroll compressor. According to one aspect of the utility model, the utility model provides a cross-shaped slip ring assembly, the cross-shaped slip ring assembly is used for a scroll compressor, and the cross-shaped slip ring assembly comprises a cross-shaped slip ring body; the key extends from the cross-shaped sliding ring body and is used for being matched with a key groove formed in a key matching part of the scroll compressor, the key comprises a matching part used for being matched with the key groove, the matching part is provided with a working surface serving as a stress side surface, and the stress side surface is provided with a stress side surface. A groove is provided only at the working surface among the working surface of the mating portion and a non-working surface opposite to the working surface. According to the utility model, the abrasion of the working surface of the matching part of the key of the cross slip ring assembly can be reduced.

A progressive cavity pump rotor can include a scroll portion, which can be configured to interface with a stator, and a head portion, which can be configured to be coupled to a coupling rod with a non-collinear joint, where the scroll portion can be releasably coupled to the head portion with a collinear joint.

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. A cavity is defined by the machine shell. The motor is mounted in the cavity; the pump body assembly is installed in the cavity and comprises a crankshaft, a static scroll plate, a support and a movable scroll plate. Wherein the crankshaft sequentially penetrates through the motor, the static scroll plate, the movable scroll plate and the support, a first scroll tooth part is arranged on the side, close to the movable scroll plate, of the static scroll plate, and a second scroll tooth part meshed with the first scroll tooth part is arranged on the movable scroll plate. And the motor is configured to drive the crankshaft to rotate so as to drive the movable scroll plate and the eccentric part of the crankshaft to synchronously rotate and translate. According to the scroll compressor, the problems of high noise and vibration of the scroll compressor can be solved, meanwhile, the exhaust pressure loss in the compression process of the compressor is reduced, and it is ensured that the performance of the structure and the performance of a traditional scroll reach the same level or above.