1020 results about "Scroll compressor" patented technology

The invention provides a permanent magnet motor and a scroll inverter compressor, and relates to the technical field of scroll compressor design and manufacturing, and the permanent magnet motor comprises a stator iron core and a rotor iron core; the stator core comprises stator teeth and a stator yoke which are uniformly distributed along the circumference, fluid through grooves are formed in the outer side of the stator yoke at the tops of the stator teeth, stator grooves are formed in two adjacent stator teeth and the stator yoke between the two stator teeth, and a plurality of strands of conductive circular enameled wires are embedded in each stator groove; the outer side of the rotor core is composed of linear segments and arcs, air grooves which are evenly distributed are formed in the rotor core, non-uniform magnetic isolation bridges are formed between the air grooves and the linear segments on the outer side of the rotor core, a certain distance is formed between every two adjacent air grooves, parallel magnetic conductive ribs are formed, and permanent magnets with the magnetic field directions changing alternately are embedded in the air grooves. A rivet hole, a lightening hole and a shaft hole are arranged close to the inner side of the rotor core. Therefore, the defined proportionality coefficient Ks is kept in a reasonable range, the power density of the motor can be increased, the cost is reduced, and the efficiency is improved.

The invention relates to the technical field of fault diagnosis, and discloses a scroll compressor thrust bearing fault diagnosis method and system based on artificial intelligence. The method comprises the following steps: acquiring an original vibration signal of the thrust bearing of the scroll compressor through a piezoelectric acceleration sensor array, and performing angle domain synchronization and modal decomposition on the original vibration signal to obtain a demodulated vibration signal; according to the demodulation vibration signal, extracting fault characteristic frequency spectrums of inner ring damage, outer ring crack, rolling body peeling and retainer deformation in the scroll compressor thrust bearing; extracting fault features from a time domain, a frequency domain and a time-frequency domain based on the fault feature frequency spectrum, and constructing a fault feature vector; and inputting the fault feature vector into an integrated learning model to carry out fault identification analysis to obtain a fault type and severity. According to the invention, the accuracy of fault diagnosis of the thrust bearing of the scroll compressor 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.

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.

The invention relates to the technical field of compressors, and discloses a scroll compressor shafting dynamic balance simulation method, device and equipment and a medium, and the method comprises the following steps: carrying out fluid mechanics analysis based on a movable scroll plate model to obtain initial three-way gas force; performing dynamic analysis based on a scroll compressor model by taking the initial three-way gas force as a boundary condition to obtain a displacement result of a movable scroll plate; inputting the displacement result into the movable scroll plate model, updating the position and the motion state of the movable scroll plate, and carrying out fluid mechanics analysis again to obtain a new three-way gas force; and performing dynamic balance optimization on the scroll compressor model by taking the new three-way gas force as a boundary condition until a preset condition is met, and obtaining a target dynamic balance result. According to the technical scheme, the precision of dynamic balance simulation of the shaft system of the scroll compressor can be improved, and therefore the product reliability is improved through optimization of dynamic balance.

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.

The invention discloses a multistage closed-loop recovery method and system for industrial flue gas waste heat, and particularly relates to the technical field of waste heat recovery. The method comprises the following steps: predicting a process steam demand through a high-temperature section temperature parameter in flue gas monitoring data, and predicting a preheating medium demand based on a low-temperature section temperature parameter in the flue gas monitoring data; inputting the high-temperature-section demand prediction result and the low-temperature-section demand prediction result into a dynamic heat balance equation, calculating an optimized set point of a three-stage compressor unit, and adjusting the rotating speeds of a centrifugal compressor, a screw compressor and a scroll compressor by adopting a fuzzy PID (Proportion Integration Differentiation) algorithm; collecting temperature and flow data of secondary waste heat after the industrial equipment is reused, and generating secondary waste heat monitoring data; according to a compressor adjusting instruction and secondary waste heat monitoring data, the real-time opening degrees of the two-way stop valve and the electric adjusting valve are controlled, backflow of secondary waste heat to the interstage heat exchanger set is achieved, closed-loop recycling of industrial flue gas waste heat is completed through countercurrent flow heat exchange, and the waste heat recycling efficiency and the system stability are improved.

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.

The invention provides a scroll compressor cross ring dynamic strain wireless measuring device, which relates to the technical field of compressor state monitoring and comprises a high-temperature-resistant strain gauge, a wire fixing system and a wireless sensor. Wherein the high-temperature-resistant strain gauges are respectively attached to stress sensitive areas of a static key, a ring beam and a movable key of the cross ring every time; the wire fixing system comprises a three-stage fixing structure formed by an adhesive, an internal wire, an external wire and an internal binding post; the three stages of fixing structures are a strain gauge end fixing structure, a lead transition section fixing structure and a binding post end fixing structure in sequence; the high-temperature-resistant strain gauge is connected with the wireless sensor through an internal wire, a binding post and an external wire, and continuous signal collection is achieved. By implementing operation according to the technical route, the impact load borne by the cross ring at the moment of starting and stopping of the compressor can be collected in a high-quality mode, data collection in a closed cavity is achieved, and an experimental basis is provided for subsequent strength design of the cross ring.

The invention relates to a dynamic compensation assembly of a compressor, a design method of the dynamic compensation assembly and the compressor, and relates to the field of scroll compressors. A dynamic compensation assembly of the compressor comprises a groove disc, a static scroll plate with static scroll teeth, a movable scroll plate with movable scroll teeth, four elastic compensation mechanisms installed in four bearing holes respectively, three crank throws and a crankshaft. When the movable scroll wrap and the static scroll wrap are in interference due to excessive meshing, the spring deforms and deviates from the first bearing, so that the pressure of the contact surface of the movable scroll wrap and the static scroll wrap is reduced while the movable scroll wrap and the static scroll wrap are kept fit in the working process, and the tooth surface abrasion is reduced; when the movable scroll wrap and the static scroll wrap are not fully meshed and a gap exists, under the action of revolution centrifugal force, the movable scroll plate drives the movable scroll wrap to be attached to the static scroll wrap, and excessive impact is avoided under the action of the spring, so that sealing is achieved, air leakage is avoided, the service life is effectively prolonged, and the working stability is effectively improved.

The utility model discloses a liquid return impact experiment device for a low-pressure cavity scroll compressor, and relates to the technical field of experiment equipment, in particular to the liquid return impact experiment device for the low-pressure cavity scroll compressor. One end of a first stop valve is connected with an exhaust pipeline of a tested compressor, and the other end of the first stop valve is connected with an inlet of a gas-liquid separator; an outlet of the gas-liquid separator is connected with a second stop valve; the second stop valve is connected with the electronic expansion valve through an electronic expansion valve pipeline; the electronic expansion valve pipeline is connected with a bypass pipeline in parallel, and a third stop valve is arranged on the bypass pipeline; an outlet of the electronic expansion valve is connected with a fourth stop valve; the fourth stop valve is connected with the liquid sight glass; and the liquid sight glass is connected with an air suction pipeline of the tested compressor. According to the technical scheme, the problems that an existing compressor glow test device in the prior art is complex, whether liquid returns or not is not easily judged, the experimental period is long, and the overall liquid impact resistance of the compressor cannot be rapidly and accurately evaluated are solved.

The invention relates to the technical field of compressors, in particular to a fixed scroll axial flexible scroll compressor. The distance between the periphery R of the tooth end of a fixed vortex blade and the center of a main supporting component accounts for 30%-40% of the diameter D of a shell; and the matching width K of the excircle through hole of the fixed scroll and the cylindrical steel pin accounts for 70%-90% of the exposed length L of the cylindrical steel pin. The diameter of the shell ranges from phi 160 mm to phi 180 mm. According to the technical scheme, the problem that in the prior art, a fixed vortex axially floats and is prone to overturning is solved.

Heat pump systems that include vapor injection feature are disclosed. Embodiments may include a heat pump system that has two tandem scroll compressors. Each compressor is paired with a control valve that regulates the flow of vapor to the respective compressor. Both the control valves are in fluid communication with a single or common source for vapor injection and to the controller. During operation, the controller dynamically determines how much vapor injection is needed for each of the compressors based on the operational data of the compressors and, optionally, ambient environment data. The controller then operates the two valves to ensure that the right amount of vapor is injected into each compressor.

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.

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.

The utility model relates to a scroll compressor, which comprises a movable scroll, a movable scroll, a movable cover plate, a movable cover plate, a movable cover plate, a movable cover plate, a movable cover plate, a movable cover plate and a movable cover plate, wherein the movable scroll comprises a movable scroll end plate and a movable scroll; the fixed scroll comprises a fixed scroll end plate and a fixed scroll roll formed on one side of the fixed scroll end plate, the fixed scroll and the movable scroll are matched to form a series of compression cavities between the fixed scroll and the movable scroll, the fixed scroll end plate comprises a main exhaust port and an auxiliary exhaust port, the main exhaust port is in fluid communication with a central compression cavity in the compression cavities, and the auxiliary exhaust port is in fluid communication with the central compression cavity in the compression cavities. The auxiliary exhaust port is in fluid communication with the middle compression cavity located on the radial outer side of the central compression cavity. A first annular wall is formed on the side, opposite to the fixed scroll, of the fixed scroll end plate, and a bypass valve assembly is arranged on the end face, away from the fixed scroll, of the first annular wall so as to selectively open or close the auxiliary exhaust port. According to the scroll compressor with the variable volume ratio function, the scroll compressor is not limited by installation space and is simple in structure.

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the electric compressor from the discharge volume.

A scroll compressor includes a first scroll including a first end plate and a first scroll wrap extending downward from the first end plate; a second scroll including a second end plate and a second scroll wrap extending upward from the second end plate, the second scroll and the first scroll cooperating to form a compression chamber for compressing a refrigerant; a motor; a driving member located below the second scroll, the motor driving the first scroll to rotate through the driving member, and the first scroll driving the second scroll to rotate; and a bracket, the driving member being rotatably supported on the bracket. This structure can improve the performance of the scroll compressor.

The application provides a bearing assembly, a pump body assembly and a scroll compressor. The bearing assembly comprises a bearing, a crankshaft and an oil reservoir, the bearing is arranged in the oil reservoir and used for supporting the crankshaft; the crankshaft is provided with a central oil hole and a radial oil hole, one end of the radial oil hole is communicated with the central oil hole, and the other end of the radial oil hole is communicated with the oil reservoir; when the crankshaft rotates, the central oil hole absorbs oil and sends the oil to the oil reservoir through the radial oil hole. The bearing supporting the crankshaft is arranged in the oil reservoir, and the lubricating oil is transported to the oil reservoir from the central oil hole of the crankshaft, so that the bearing can be in the lubricating oil no matter when the scroll compressor is started for the first time or when frequent start-stop occurs during operation, and the state of little oil or even no oil is avoided.

The invention relates to the field of scroll compressor design, and discloses a full-meshing double-vortex-ring scroll compressor diffusion hole machining design method which comprises the steps of constructing an initial design domain, defining a multi-working-condition working point set and a fluid dynamic control equation determined by compressor operation parameters to construct a multi-working-condition analysis model, establishing a solid isotropic material penalty model, and designing a diffusion hole of a full-meshing double-vortex-ring scroll compressor according to the solid isotropic material penalty model. Multi-working-condition robustness topological optimization with the total pressure loss weighted sum under all the weighted working conditions as the target is executed, a discrete pseudo-density field is obtained, parameterized geometric reconstruction is conducted on the discrete pseudo-density field, and a diffuser hole parameterized geometric model controlled by parameter vectors is obtained. By introducing multi-working-condition robustness topological optimization and integrated dynamic machining constraint linkage re-optimization, remarkable robustness of aerodynamic performance of the diffusion hole in a wide working range is achieved, it is ensured that the diffusion hole meets the high-quality and high-efficiency numerical control machining requirements congenitally, and the design efficiency and manufacturing feasibility of the diffusion hole of the scroll compressor are greatly improved.

The utility model relates to an electric compressor and water heating heater integrated mechanism for a new energy vehicle, which relates to the technical field of automobile part production, and comprises an electric scroll compressor body and a water heating electric heating assembly, and the electric scroll compressor body and the water heating electric heating assembly are respectively and fixedly arranged on a two-in-one controller. According to the electric scroll compressor, the electric scroll compressor body, the water heating electric heating assembly and the two-in-one controller are integrated into the same structure, a traditional split type installation mode is broken through, redundant space occupation among components is reduced, compact layout is achieved, meanwhile, through double-face installation and a base limiting structure, three-dimensional compact layout is further achieved, and the electric scroll compressor is more compact in structure. The limited vehicle body space requirement of the new energy vehicle is met; and the shell, the connector and other components are shared, the overall size is reduced by about 30%-40% compared with a split type scheme, and a layout space is vacated for a battery pack or other key components.

The present application provides a spiral compressor comprising: a movable spiral disk; a fixed spiral disk, wherein the fixed spiral disk has a base plate and a spiral wall arranged on the base plate; and a housing arranged on the side of the base plate facing away from the spiral wall.The housing comprises a first chamber having a first opening on the bottom surface of the housing facing the base plate, this first opening being covered by the base plate to form an injection chamber connected via an injection port on the base plate to the compression chamber, which is formed by the movable spiral disk and the fixed spiral disk and corresponds to the intermediate pressure stage, the first chamber being connected to the injection port of the scroll compressor, wherein a check valve is arranged in the first chamber, which releases the flow in the direction from the injection port to the injection chamber and prevents backflow. The present application also relates to a corresponding heat pump device. The advantage of this application lies in its ability to form an injection chamber for a scroll compressor with a simple structure and a small number of components.

Provided is a scroll compressor capable of handling operation at higher efficiency and higher compression ratio. In an area of at least one of an end face (11aa) of a scroll tooth side of a fixed scroll end plate (11a) or an end face (12aa) of a scroll tooth side of a revolving scroll end plate that does not serve as a compression chamber, a slope (11aa(s), 12aa(s)) having an angle with the end face (12aa) of the scroll tooth side of the scroll end plate is provided. Thus, contact of burrs generated at a rim portion of a discharge port (14) or a sub-discharge port (14a) with a front end of a scroll tooth is eliminated, the operation of a revolving scroll (12) is stabilized, and a scroll compressor with high efficiency and high reliability can be provided.

The application provides a device for mounting a scroll compressor crankshaft rotor assembly into a compressor, comprising a frame, a lower part of the frame is fixed with a positioning disc, a scroll compressor pump shell assembly with a stator is mounted on the positioning disc; a jacking shaft is arranged on the lower part of the frame; a guide block capable of lifting is arranged on the upper part of the frame, the bottom of the guide block is provided with a plurality of guide spacers; the crankshaft rotor assembly is located above the scroll compressor pump shell assembly and is connected with a rotor lifting device for driving the lifting of the crankshaft rotor assembly; after the spacers enter the stator, the crankshaft rotor assembly is lowered and passes through the hole of the crankshaft rotor assembly to enter the stator, and under the guidance of the spacers, the top of the jacking shaft which has been lifted is contacted, the jacking shaft is lowered until the crankshaft rotor assembly is completely entered into the stator, and the mounting is completed. The application no longer adopts the free-fall type assembly of the rotor, but adopts the slow descending mode of the jacking shaft to mount the rotor, so that the damage of the parts is prevented.

The utility model relates to the technical field of scroll compressors, in particular to a thrust bearing structure for a scroll compressor and the scroll compressor, the thrust bearing structure for the scroll compressor comprises a supporting body and a shell installed on the compressor, and a first through hole is formed in the middle of the supporting body; the thrust bearing is arranged on a driving shaft of the compressor in a sleeving mode, the thrust bearing comprises a bearing main body and an edge folding part, the edge folding part is formed at the top of the bearing main body, the bearing main body is installed in the first through hole, and the edge folding part is erected on the top face of the supporting body and used for bearing the driving shaft; and an oil groove is formed in the edge folding part. By means of the thrust bearing structure for the scroll compressor and the scroll compressor, the problem that an existing thrust bearing for the scroll compressor is complex in machining or prone to abrasion can be solved.

Scroll compressor in the form of an oil-free compressor unit, wherein at least one spiral wall of a spiral of the scroll compressor is formed from a metal base body with a multi-layered PFAS-free coating system to form a sealing surface against overflow in the circumferential direction, characterized in that that the metal base body is made of aluminum or an aluminum alloy; and that the multi-layer coating system i) has a hard anodized layer of aluminium oxide and ii) has at least one polymer sliding layer or one sol-gel sliding layer.

The application discloses a semi-sealed scroll compressor, which comprises a frame, a moving scroll and a crankshaft. The crankshaft is pivotally connected to a bearing hole on the frame. A back pressure cavity is formed between the frame, the back surface of the moving scroll and the crankshaft. A damping structure is arranged between the crankshaft and the bearing hole to damp the lubricating oil flowing out of the back pressure cavity. The application controls the flowing rate of the lubricating oil out of the back pressure cavity through the damping structure between the bearing hole and the crankshaft, so as to control the pressure of the back pressure cavity.

The utility model relates to a vibration reduction support for an electric scroll compressor of a new energy automobile, belongs to the technical field of vibration reduction of new energy automobiles, and solves the problems of poor use experience feeling caused by vibration of the electric scroll compressor of the new energy automobile and noise caused by vibration. The anti-vibration device comprises an anti-vibration pad assembly, a mounting bracket, a bolt and a screw rod assembly, the anti-vibration pad assembly comprises a first anti-vibration pad and a second anti-vibration pad which are arranged on the upper side and the lower side of the mounting bracket; the upper and lower surfaces of the first anti-vibration pad are provided with first and second trapezoidal anti-vibration grooves in a circumferential array, the outer side is provided with an annular anti-vibration groove, and the interior is provided with a star-shaped mounting hole penetrating axially; a bolt penetrates through the anti-vibration pad assembly and the mounting bracket to be connected with the new energy automobile chassis; the two screw assemblies are used for mounting the compressor and are parallel to each other; the screw assembly comprises a screw and a nut. And the screw rod penetrates through the mounting bracket and the electric scroll compressor and then is connected with the nut. According to the utility model, the vibration reduction of the electric scroll compressor of the new energy automobile is realized, and the vibration reduction and noise reduction of the whole new energy automobile are further realized.

A scroll compressor including a hermetic casing provided with a suction inlet; a compression unit; a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement; an electric motor coupled to the drive shaft; an oil sump; a refrigerant guiding device configured to force a main part of a refrigerant, entering the scroll compressor through the suction inlet, to flow downwardly through the electric motor, before reaching the compression unit; and an oil sump fairing arranged between a lower end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, emerging from the lower end of the electric motor, to directly impact the free surface of the oil stored in the oil sump.

The invention provides a scroll compressor with a self-aligning-free structure and an assembling method, and relates to the technical field of scroll compressors and assembling methods. The scroll compressor comprises a shell, an upper support and a scroll assembly, wherein the upper support and the scroll assembly are arranged in the shell; the vortex assembly comprises a fixed vortex and a movable vortex, an annular boss is arranged on the outer edge of the fixed vortex in the circumferential direction, an annular concave table is arranged on the outer edge of the upper support in the circumferential direction, and the fixed vortex is installed on the upper support through clearance fit between the inner circle face of the annular boss and the outer circle face of the annular concave table of the upper support. Concentric positioning between the fixed vortex and the upper support is achieved. The assembly efficiency of the compressor is improved on the basis that the vortex assembly of the vortex compressor is free of alignment during installation; and a positioning and aligning mode is adopted, so that the compressor is more stable in structure, and the operation stability of the compressor is improved.