23results about "Engine of arcuate-engagement type" patented technology

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

A thrust bearing assembly 5 for providing axial support for a first scroll member 20 with respect to a second scroll member 30 within a scroll pump 10; the thrust bearing assembly comprising at least

This invention relates to the field of scroll machinery technology, and discloses a scroll profile design method and related products. The method includes: representing an algebraic helix with linear differential pitch in polar coordinates; using the algebraic helix with linear differential pitch as a generation baseline; and generating a scroll profile based on the generation baseline. By using the algebraic helix with linear differential pitch in polar coordinates as the generation baseline for generating the scroll profile, and defining different algebraic helixes, scroll disk profiles with significant differences can be generated. This allows the generated scroll profile to flexibly adjust the variation law of the working volume cavity, the variation law of the leakage line length, and the variation law of the connection area with the intake and exhaust ports, thereby achieving flexible adjustment of the profile's geometric performance, improving the flexibility of scroll profile parameter design, expanding the parameter optimization space, and thus improving the thermodynamic performance of the scroll machinery.

The invention provides a scroll mechanism. The vortex mechanism comprises a rack, a main shaft assembly body, a fixed disc, a movable disc assembly body, a displacement sensor and a control circuit. Wherein a control magnet is arranged on the fixed disc and / or the rack, and a controlled magnet is arranged on the movable disc assembly body. The displacement sensor is configured to measure position information so as to detect the inclination state generated when the movable disc assembly operates, and the control circuit is configured to input sine control current to the control magnet. According to the structure, the control magnet can generate the electromagnetic moment for balancing the overturning moment based on the detected inclination state, so that the inclination degree of the movable disc assembly is reduced, conditions are provided for increasing the size of the scroll wrap, and the capacity increase of the scroll mechanism is realized.

A co-rotating scroll machine (1) for displacing and compressing or expanding a fluid, comprising a drive scroll (5a) comprising at least one drive scroll blade (18a), an idler scroll (5b) comprising at least one idler scroll blade (18b), a housing (2) comprising a scroll chamber (32) bounded by a first chamber end wall (11) and a second chamber end wall (13) and in which the drive scroll and the idler scroll are received, the drive scroll and the idler scroll being rotatable within the scroll chamber. The at least one drive scroll blade and at least one idler scroll blade (18a, 18b) extend in an axial direction from a first axial edge (50a, 50b) to a second axial edge (51a, 51b), an axial length (L5a) of the drive scroll blade (18a) being equal to an axial length (L5b) of the idler scroll blade (18b), the first axial edge adjacent and in sealing proximity to the first chamber end wall (11) and the second axial edge adjacent and in sealing proximity to the second chamber end wall (13), such that a pressure in the variable volume pump chamber (19) is exerted on both the first chamber end wall (11) and the second chamber end wall (13).

The present application relates to an internal combustion engine operating on the rotary principle, wherein at least one piston rotates on a circular piston path within an annular cylinder chamber bounded by a cylinder wall, passing through various zones of the cylinder chamber. On one full revolution of the internal combustion engine, corresponding to a complete rotation of the piston on its piston path (360°), an air-fuel mixture is ignited behind the piston in a combustion zone of the cylinder chamber. Later, during the same revolution, air located in front of the piston is compressed by the piston in a compression zone of the cylinder chamber. The compressed air is drawn into the piston and transported by the piston along its path into the combustion zone. There, the compressed air is discharged from the piston into the combustion zone and used to form the air-fuel mixture.

A heat engine is configured to receive a high-pressure fluid and release a low-pressure fluid. The heat engine includes a main housing including an expansion tank and a generator housing. The heat engine includes a scroll decompressor disposed in the expansion tank. The scroll decompressor is configured to progressively decompress the high-pressure fluid to the low-pressure fluid while rotating a main shaft. The heat engine includes a generator disposed in the generator housing. The generator is driven by the main shaft. The heat engine includes a coupling disposed on the main housing configured to couple with a power receiving device. The coupling is configured to transfer rotational motion of the generator to a rotational input of the power receiving device.

A heat engine is configured to receive a high-pressure fluid and release a low-pressure fluid. The heat engine includes a main housing including an expansion tank and a generator housing. The heat engine includes a scroll decompressor disposed in the expansion tank. The scroll decompressor is configured to progressively decompress the high-pressure fluid to the low-pressure fluid while rotating a main shaft. The heat engine includes a generator disposed in the generator housing. The generator is driven by the main shaft. The heat engine includes a coupling disposed on the main housing configured to couple with a power receiving device. The coupling is configured to transfer rotational motion of the generator to a rotational input of the power receiving device.

The invention discloses an SOFC (Solid Oxide Fuel Cell) coupled hybrid power generation system, which belongs to the technical field of hybrid power generation and comprises a solid oxide fuel cell, an external combustion type vortex engine, an internal combustion type vortex engine and a temperature control module, an air inlet of the external combustion type vortex engine sucks air, and a fuel gas inlet of the external combustion type vortex engine receives cathode tail gas; an outer duct spray pipe of the external combustion type vortex engine sends air to the temperature control module, and the air is heated and then discharged into a cathode; an inner duct spray pipe of the external combustion type vortex engine conveys combustion tail gas to a temperature control module for cooling and then discharging the combustion tail gas; the anode of the solid oxide fuel cell receives the compressed fuel heated by the temperature control module and exhausts anode tail gas to the temperature control module for cooling; the internal combustion type vortex engine receives mixed gas of air and anode tail gas and discharges flue gas. The external combustion type scroll engine compresses gas through the scroll plate and does work through expansion, the variable load power generation efficiency is higher than that of a gas turbine system, the variable working condition performance of the cathode side can be improved, and the power generation efficiency is improved.

The utility model provides an internal automatic unloading compressor and a new energy automobile, the internal automatic unloading compressor comprises a closed shell, a vortex pump body assembly and a motor are respectively arranged at the upper part and the lower part of an inner cavity of the closed shell, the motor drives a vortex plate in the vortex pump body assembly to rotate forwards to compress a refrigerant, and the vortex plate rotates forwards to compress the refrigerant; an air cylinder exhaust hole of the scroll pump body assembly is always communicated with the high-pressure side of the compressor and the scroll plate; and the controller is connected with the motor, and after the compressor is shut down, gas on the high-pressure side is expanded to the low-pressure side through the scroll plate to drive the scroll plate to rotate reversely so as to drive the motor to generate electricity and convey the electricity to the controller. After the compressor is shut down, high pressure and low pressure can be rapidly balanced, migration of liquid refrigerant is reduced, and it is guaranteed that the compressor is restarted smoothly.

This makes it easier to assemble and disassemble the inflator, thereby improving work efficiency during the manufacturing and maintenance of the inflator. [Solution] The expander includes a generator within its housing that generates electricity using power produced by the expansion of a working medium. The generator has a shaft that rotates around a central axis extending vertically using the power, and a rotor positioned radially outside the shaft. The shaft has an inner shaft and an outer shaft positioned radially outside the inner shaft, through which the power is transmitted. The inner shaft is rotatably supported by the housing via a first bearing and is axially slidable with respect to the outer shaft and the first bearing. The outer shaft is fixed to the rotor and is rotatably supported by the housing via a second bearing.

A scroll compressor is provided with a compression mechanism unit that has a fixed scroll and an orbiting scroll and is configured to compress refrigerant, a rotation shaft that has an eccentric portion, a motor unit configured to drive the compression mechanism unit by use of the rotation shaft, a pressure vessel in which the compression mechanism unit and the motor unit are housed, and a frame that is fixed to the inside of the pressure vessel and supports the orbiting scroll in an axial direction in which the rotation shaft extends. The orbiting scroll has an orbiting-base plate portion, an orbiting scroll wrap provided in a first face of the orbiting-base plate portion that faces the fixed scroll, and a boss portion provided in a second face of the orbiting-base plate portion that is opposite to the first face and in which the eccentric portion is fitted with each other. The orbiting-base plate portion and the boss portion are located such that the position of the center of the orbiting-base plate portion differs from the position of the center of the boss portion when the orbiting-base plate portion and the boss portion are viewed in the axial direction.

The utility model provides a vortex expander assembly and an organic Rankine cycle system, the vortex expander assembly comprises a vortex expander, the vortex expander comprises a fixed vortex and a movable vortex, the fixed vortex comprises a fixed vortex end plate and a fixed vortex blade formed on one side of the fixed vortex end plate, and the movable vortex comprises a movable vortex end plate and a movable vortex blade formed on the other side of the fixed vortex end plate. The movable vortex comprises a movable vortex end plate and movable vortex blades formed on one side of the movable vortex end plate, and the fixed vortex blades and the movable vortex blades are connected with each other so as to form a series of fluid cavities between the fixed vortex blades and the movable vortex blades; and the lubricant supply mechanism comprises a lubricant source and a lubricant supply channel, the lubricant source is arranged outside the vortex expansion machine, and the lubricant supply channel is configured to supply lubricant from the lubricant source to at least one fluid cavity in the series of fluid cavities. According to the vortex expansion machine assembly and the organic Rankine cycle system, sufficient lubrication in the vortex expansion machine can be guaranteed, and the reliability of the system is improved.

The invention discloses a variable cross-section scroll wrap of an asymmetric scroll expander and a design method of the variable cross-section scroll wrap. A movable scroll wrap is composed of a first molded line PQ obtained after a base circle combination generatrix pq rotates anticlockwise, a second molded line MN obtained after a variable-diameter base circle combination generatrix mn is intercepted, a right side correction inner equidistant arc AiEi and a left side correction inner equidistant arc BiEi; the static scroll wrap is composed of a third molded line P 'Q', a fourth molded line M 'N', a right side correction outer equidistant arc AoEo and a left side correction outer equidistant arc BoEo; in the working process, the movable scroll wrap and the static scroll wrap can be correctly meshed. The asymmetric variable cross-section scroll wrap profile is simple in design, and the thickness of the static scroll wrap is firstly reduced, then increased and then reduced from the center to the outer ring, so that the number of scroll turns and the length of a leakage line are reduced and the leakage rate is reduced under the requirements of a scroll expander on a large expansion ratio and high output work; and the thickness of the movable scroll wrap is gradually reduced from the center to the outer ring, so that the strain of the scroll wrap is reduced, and the dynamic characteristic of the scroll wrap is improved.

The present invention provides a scroll expander and an operation method thereof, and a fluid circulation system and an operation method thereof, the scroll expander comprising: a housing enclosing an internal space of the scroll expander, the internal space being divided into a high pressure region and a low pressure region; the expansion mechanism is arranged in the shell and comprises a fixed vortex and a movable vortex, a central air inlet cavity, an exhaust cavity and a middle expansion cavity are formed between the fixed vortex and the movable vortex, an air inlet channel and a sealing piece are further arranged on the side, opposite to the cavities, of the expansion mechanism, the air inlet channel is used for communicating a high-pressure area with the central air inlet cavity, and the sealing piece is used for sealing the middle expansion cavity. The sealing element is used for isolating the air inlet channel from the low-pressure area, the sealing element is at least partially arranged in the sealing element cavity, the vortex expansion machine further comprises at least one pressure buildup passage, and the pressure buildup passage is constructed to be capable of communicating the sealing element cavity with a high-pressure fluid supply pipeline outside the vortex expansion machine. According to the vortex expansion machine, normal starting and normal operation can be achieved.

A scroll decompressor includes a cap portion, a body portion, an oil management system, and a sealing mechanism disposed between the cap portion and the body portion. The cap portion includes a scroll assembly and a set of oil separators. The scroll assembly is configured to receive a refrigerant at a first pressure and output the refrigerant at a second pressure that is lower than the first pressure. The set of oil separators is configured to reduce a velocity of the refrigerant exiting the scroll assembly. The body portion includes a top side facing the cap portion and a set of openings formed in the top side. The oil management system is configured to control oil movement between the cap portion and the body portion. The sealing mechanism is configured to block the set of openings.

The scroll wrap comprises a movable scroll wrap and a static scroll wrap which are completely identical in shape, the tooth thickness of the movable scroll wrap and the tooth thickness of the static scroll wrap are linearly decreased from the tooth root to the tooth top in the axis direction, a trapezoidal section is formed in the direction parallel to the axis, and through collaborative design of a draft angle beta and a draft regulation factor gamma, the draft angle beta and the draft regulation factor gamma are matched with each other. Inclination difference of the inner wall and the outer wall is dynamically adjusted, and interference-free meshing of the movable scroll wrap and the static scroll wrap in revolution and translation is ensured. The design method comprises the following steps: establishing a tooth root molded line based on a given initial parameter; calculating a draft angle beta; dynamically adjusting the inclination angle difference of the inner and outer walls through the gamma value; calculating a molded line equation at any axial height; and rotating the movable scroll wrap molded line by 180 degrees to obtain a static scroll wrap molded line. According to the scroll wrap with the trapezoidal cross section of the scroll compressor, the weight of the tooth crest is reduced while the strength of the tooth root is improved, the stress state of the scroll wrap is improved, and the dynamic characteristic is good; the volume utilization efficiency is optimized, the internal volume ratio is large, the number of turns is small, and the leakage line length is short.

The utility model provides an organic Rankine cycle system which comprises a vortex expansion machine, the vortex expansion machine comprises a shell, an expansion mechanism, a main bearing seat used for supporting the expansion mechanism, a rotating shaft driven by the expansion mechanism and a motor connected with the rotating shaft, and a balance block is installed on the rotating shaft. The inner space enclosed by the shell is divided into a high-pressure area and a low-pressure area; the external fluid circulation path comprises a first fluid pipe, a second fluid pipe and a third fluid pipe capable of communicating fluid in the high-pressure area with fluid in the low-pressure area; and the control system is constructed to control the flow in the third fluid pipe according to the rotating speed of the motor, the control system comprises a proximity switch used for detecting the rotating speed of the motor, and the proximity switch is arranged in the vortex expansion machine and is arranged to enable the sensing surface of the proximity switch to be close to the balance block. According to the organic Rankine cycle system, faults caused by overspeed of the motor in the operation process can be avoided.

To provide a power engine that is lighter and powerful.SOLUTION: A circulation shaft (C13) of a blade bearing (6x) at a base portion of four blades receiving combustion pressure of an engine is made to be eccentric to a position (C13) different from a center axis (C14) of an engine output rotor interlocking with that. The blades are restrained by a blade depth groove (Bw) and a blade bearing circulation groove (between C2 and C3), and is mechanically controlled so as to eccentrically rotate the blades upward around an output shaft of the rotor. In an atmospheric pressure area, an air compression step area, the maximum compression area, and a decompression step area that are generated by a relative relationship between a housing and a side plate, elements required as a power engine are provided in the housing and the side plate, and those are power-rotated according to optional setting of size, a ratio, and a positional relationship.SELECTED DRAWING: Figure 3

The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor, said machine comprising: an electric motor (10); an orbiting displacement spiral (21); and a counter spiral (22), the displacement spiral (21) and the counter spiral (22) engaging into one another in such a way that variable compression chambers are formed between the displacement spiral (21) and the counter spiral (22) in order to receive and compress a working medium flowing through a working medium circuit, and the electric motor (10) being drivingly connected to the displacement spiral (21) by means of a motor shaft (12). The invention is characterised in that the motor shaft (12) is supported via a single shaft bearing (31) which is located between the electric motor (10) and the displacement spiral (21).