47 results about "Variable capacity" patented technology

The invention discloses a variable-capacity air fryer convenient to operate. Comprising a base, a guide rail assembly vertically arranged on the side of the base, a sliding seat assembly in sliding fit with the guide rail, a heating machine head arranged on a sliding seat, an elastic reset piece connected with the guide rail and the sliding seat, an elastic locking assembly arranged on the sliding seat, an external first handle and at least two pot bodies. The guide rail is provided with a plurality of gear lock holes and a sliding groove, and the first handle is connected with the sliding seat through the sliding groove and can drive the sliding seat to ascend and descend and enable the locking assembly to be inserted into the corresponding lock hole so as to lock the height of the machine head. And the pot body can be placed on the base and covers the machine head. The structure realizes quick adjustment of the machine head, adapts to pot bodies with different capacities, does not need to disassemble the machine head, and is convenient to operate, sanitary, safe, and good in sealing performance and heat cycle effect.

The application relates to the technical field of air conditioners, and discloses a control method for a variable displacement compressor air conditioner, wherein an exhaust port of a variable displacement compressor is connected to a variable displacement chamber of the variable displacement compressor through an exhaust pipeline, and an electric heating device is arranged on the exhaust pipeline; the control method comprises the following steps: in the case that the variable displacement compressor air conditioner executes a heating mode, obtaining an exhaust temperature of the variable displacement compressor, an exhaust pressure and a saturated steam temperature corresponding to the exhaust pressure; and in the case that the difference between the exhaust temperature and the saturated steam temperature is less than a first temperature, controlling the electric heating device to start. The method can avoid liquid accumulation in the variable displacement chamber and eliminate noise caused by liquid accumulation. The application further discloses a control device for the variable displacement compressor air conditioner, a variable displacement compressor air conditioner and a storage medium.

A variable-capacity electric propulsion motor cooling structure according to the present invention is a structure for cooling a variable-capacity electric propulsion motor comprising: a rotor shaft; a rotor core having the shape of a circular plate such that the rotor shaft is coupled through the center thereof, multiple permanent magnets buried along the circumferential direction of the rotor core; a winding coil disposed so as to surround the outer periphery of the rotor core; a stator core disposed so as to surround the outer periphery of the winding coil so as to undergo a magnetic force reaction with the permanent magnets; a motor housing disposed so as to surround the outer periphery of the stator core in a hollow cylinder shape, both sides of the motor housing being open; and a pair of covers coupled to both open sides of the motor housing, respectively, such that the rotor shaft is coupled through the center of each cover, a containing space being formed inside each cover. Multiple cooling holes are formed at a predetermined interval along the circumferential direction through both surfaces of the stator core positioned in the same direction as the axial direction of the rotor shaft. Cooling tubes are coupled to the multiple cooling holes, respectively. Cooling water introduced through one of the pair of covers is discharged through the other cover after passing through the cooling tubes.

The invention provides a variable displacement vane pump which can adjust the full cut-off pressure in a wide range from low pressure to high pressure by using a single pump without changing a spring. A vane pump is provided with: a plurality of vanes slidably protruding from a rotor that is rotatable about a shaft; a cam ring having an inner peripheral surface in sliding contact with the outer peripheral end of the blade, and being eccentrically rotatable with respect to the shaft; a high-pressure-side spring that urges the cam ring via the plunger; a low-pressure-side spring which is at least partially housed in the holder and which biases the cam ring via the holder and the plunger; a stopper provided on an end side of the low-pressure-side spring opposite to the plunger side; and a pressure adjusting part capable of adjusting the position of the stopper from a position where the stopper does not abut against the stopper even if the cam ring moves the holder to a position where the stopper always contacts the holder or more.

The nozzle member of at least one embodiment of the present disclosure is a nozzle member included in a variable nozzle mechanism of a variable capacity turbocharger. The nozzle member is composed of an iron-based alloy. In a case where a total value of a carbon content and a nitrogen content of the nozzle member is set as A mass%, and a total value of 0.5 times a tungsten content and a molybdenum content is set as B mass%, a relationship indicated by the following expression is satisfied: 6.6 x A + B ≥ 8.0. A value of the total value B is 1.5 mass% or more.

A fluid pressure driving device is provided. A hydraulic driving device (110) of the present embodiment is provided with a main pump (15) and a single pressure gauge (11). The main pump is a swash plate type variable displacement type and split type hydraulic pump that controls the discharge flow rate of the first working oil and the discharge flow rate of the second working oil that are discharged to a plurality of pressure oil supply paths, the first pressure oil supply path (120) and the second pressure oil supply path (121), using one swash plate (23). The pressure gauge (11) measures the intermediate pressure of the discharged fluid at the merging point (123a) between the first pressure oil supply path (120) and the second pressure oil supply path (121). The discharge flow path is controlled based on the pressure value measured by the pressure gauge (11).

This rotary swash plate hydraulic pump includes: a casing; a cylinder block including a cylinder bore and disposed in the casing so as to prevent relative rotation of the cylinder block; a piston that is inserted into the cylinder bore; a rotary swash plate that is housed in the casing so as to be rotatable about an axis and reciprocates the piston; and a variable capacity mechanism that changes an effective stroke length of the piston. The variable capacity mechanism includes a spool that changes the effective stroke length of the piston by adjusting opening and closing of the cylinder bore that corresponds to the spool. The cylinder block includes a spool hole into which the spool is inserted.

A turbine is provided with: a turbine wheel; a turbine casing including a flow path for a gas flow received from an intake port; a variable capacity mechanism configured inside the turbine casing and receiving the gas to direct the turbine wheel, the variable capacity mechanism having a nozzle ring of a circular plate shape and a nozzle vane unit including: a nozzle vane configured on a main face side of the nozzle ring, a nozzle shaft extending from the nozzle vane and penetrating the nozzle ring, and a nozzle link plate configured on a back face side of the nozzle ring and linked to a front end of the nozzle shaft; and a butterfly spring applying a force in a direction of a nozzle axis line in a state of contacting the nozzle vane unit. The nozzle vane is brought into abutment with a portion facing the nozzle vane by the force.

The variable-capacity compressor comprises a second air cylinder and a second flange, a pin hole is formed in the second flange, a pin valve is arranged in the pin hole, and one end of the pin hole is connected with a variable-capacity cavity, so that one end of the pin valve can bear pressure in the variable-capacity cavity; the other end of the pin valve can introduce pressure in a shell cavity of the compressor to serve as back pressure, a first pressure relief channel is formed in the pin valve, a second pressure relief channel is formed in the second flange, and when the pressure in the variable-volume cavity is larger than preset pressure, the variable-volume cavity can be sequentially communicated with the first pressure relief channel and the second pressure relief channel. And when the pressure in the variable volume cavity is smaller than the preset pressure, the variable volume cavity is disconnected from the first pressure relief channel and the second pressure relief channel. According to the invention, the problems of noise, jittering and the like generated when the variable-capacity compressor is started after long-time low-temperature standing can be solved.

The invention relates to the technical field of intelligent household appliances, and discloses an air conditioner variable capacity control method which comprises the steps that under the condition that an air conditioner is started to run, the indoor environment temperature and the target temperature are obtained; according to the difference value between the indoor environment temperature and the target temperature, the preset temperature is determined so as to obtain the first duration needed for the indoor environment temperature to reach the preset temperature; and according to the first duration and the preset duration, the initial operation frequency of variable capacity control of the compressor is determined, and the compressor is controlled to execute. According to the method, the initial operation frequency of variable capacity control of the compressor is determined in a self-adaptive mode according to the preset temperature and the first duration under different working conditions. In this way, the initial operation frequency of variable-capacity control of the compressor is matched with the actual working condition, so that the actual requirement of a user can be met, and discomfort of the user is avoided. The invention further discloses a device for air conditioner variable volume control, an air conditioner and a computer readable storage medium.

This invention discloses a variable-capacity vapor chamber with a mechanical metamaterial composite support structure and its preparation method. The variable-capacity vapor chamber includes an upper shell and a lower shell arranged opposite each other, liquid-absorbing cores fixed to the inner sides of the upper and lower shells respectively, multiple metastructures sandwiched between the two liquid-absorbing cores, and a circumferentially arranged flexible sealing structure. The metastructures are formed by the flexible liquid-absorbing cores circumferentially wrapping around the outer surface of the mechanical metamaterial. The mechanical metamaterials serve as a load-bearing skeleton, and the flexible liquid-absorbing cores serve as capillary transport channels for the return of the working fluid. The metastructures are used to undergo reversible deformation in the thickness direction to achieve changes in cavity volume while maintaining capillary transport continuity during deformation. Simultaneously, vibration attenuation and impact energy absorption are achieved through the nonlinear mechanical response of the mechanical metamaterials. This invention integrates heat transfer, variable capacity, vibration isolation, and energy absorption functions into one unit, making it suitable for applications such as aerospace equipment and high-power electronic devices that have stringent requirements for both thermal management and vibration reduction.

The application provides a variable displacement structure, a variable displacement compressor, an air conditioning system and a control method, relates to the technical field of compressors, and solves the technical problem of poor reliability of the variable displacement structure, easy incomplete return back and influence on normal operation. The variable displacement structure comprises a floating valve plate, an electromagnetic valve, a variable displacement pipeline, a variable displacement cylinder, a suction passage, a suction hole and a variable displacement passage. The application utilizes the floating valve plate and the single electromagnetic valve to control the variable displacement passage to pass in the exhaust side gas to the compression low pressure cavity, to adjust the pressure on the suction side of the compression cavity, to realize the variable displacement of the compression cavity, to complete the switching of the unloading and loading of the variable displacement cylinder without setting a locking mechanism to control the movement state of the sliding plate, to be more simple and reliable in structure, to improve the working stability of the compressor, to be simple in control method, and to be high in practicality.

A variable capacity type supercharger includes a turbine wheel, a housing that houses the turbine wheel, and a variable nozzle unit that is housed in the housing, the variable nozzle unit including nozzle vanes that are disposed on a flow path of gas that is introduced to the turbine wheel, a nozzle ring that supports the nozzle vanes so as to be rotatable, and a drive section that is disposed on an opposite side from the nozzle vanes via the nozzle ring and rotates the nozzle vanes, the housing including a drive chamber that houses the drive section and a liquid flow path that is in communication with the drive chamber, the drive chamber including an inner peripheral opposing surface that opposes an outer peripheral portion of the drive section, and a surface roughness of a flow path surface of the liquid flow path is greater than a surface roughness of at least a region of the inner peripheral opposing surface that is connected to the liquid flow path.

In construction machinery equipped with a stick, this invention aims to avoid excessive or insufficient pump flow rate to the stick cylinder due to factors such as the stick's orientation and the weight of the load, while also reducing costs and simplifying control. [Solution] The control device 17 includes a first map 26 that sets the basic pump flow rate according to the amount of operation of the stick control tool, and a second map 27 that sets a correction value to correct the basic pump flow rate set in the first map 26 according to the differential pressure between the head-side oil chamber 9a and the rod-side oil chamber 9b of the stick cylinder 9. The control device 17 is configured to correct the basic pump flow rate set in the first map 26 using the correction value set in the second map 27, and to output a control signal to the variable capacity means 11a of the hydraulic pump 11 to achieve the corrected pump flow rate.

The variable-volume compressor comprises an air cylinder, a roller, a sliding piece and a pin, an air cylinder cavity is formed in the air cylinder, the roller is arranged in the air cylinder cavity, a sliding piece cavity is further formed in the air cylinder, the sliding piece is arranged in the sliding piece cavity and can move in the sliding piece cavity, and when the sliding piece moves to be connected with the roller, the roller is normally compressed; the roller does not participate in compression when the slip sheet moves to be not connected with the roller, the pin comprises a pin head and a pin tail, the pin head is close to the slip sheet cavity relative to the pin tail, and the pin head can act on the slip sheet to lock the slip sheet; the pin tail is of a columnar structure and provided with a first central axis, the pin head is also of a columnar structure and provided with a second central axis, the first central axis and the second central axis do not coincide and are eccentrically arranged, and the eccentricity is E1; the second central axis is closer to the central axis of the cylinder than the first central axis. According to the invention, the technical problem that the sliding vane of the variable-capacity compressor collides with the head of the pin in the prior art can be solved.

This variable nozzle drive device comprises: a first annular member; a plurality of vane shafts that support variable nozzle vanes; a plurality of levers each extending from the vane shafts to the outside in the radial direction of the first annular member; a second annular member configured to be rotatable with respect to the first annular member about the center axis of the first annular member and rotatably support the plurality of levers about the center axes of the vane shafts; and a full-opening stopper that can come into contact with one lever when the variable nozzle vanes are fully opened. When the variable nozzle vanes are fully opened, the action direction of the contact force between the full-opening stopper and the levers is directed further to the outside in the radial direction of the first annular member than the tangent line of a virtual circle passing through the contact point between the full-opening stopper and the levers and centered on the center axis of the first annular member.

A concrete mixer vehicle has a lift axle and an actuator operatively connected to the lift axle and configured to move a position of the lift axle relative to a position of a chassis of the vehicle. An electronic controller of the vehicle is operatively connected to the actuator and is structured to execute computer-readable instructions to control operation of the actuator to move the position of the lift axle. The controller includes a positioning module structured to accept an operator input, to generate a lift axle movement command based upon the operator input and upon at least one operating parameter, and to communicate the lift axle movement command to the actuator.

This invention provides a variable-capacity compressor and an air conditioner. The variable-capacity compressor includes a cylinder, rollers, vanes, and a pin. The cylinder has a cylinder cavity, in which the rollers are disposed. A vane cavity is also provided on the cylinder, in which the vanes are disposed and can move. When the vanes move to contact the rollers, the rollers are normally compressed; when the vanes move to not contact the rollers, the rollers do not participate in compression. The pin includes a pin head and a pin tail. The pin head is closer to the vane cavity than the pin tail and can act on the vanes to lock them. The pin tail is a columnar structure with a first central axis, and the pin head is also a columnar structure with a second central axis. The first and second central axes are not coincident and are eccentrically set with an eccentricity of E1. The second central axis is closer to the central axis of the cylinder than the first central axis. This invention solves the technical problem of vanes colliding with the pin head in existing variable-capacity compressors.

The utility model relates to a rotating injection pump of variable rotating speed belongs to non variable capacity pump technical field, the rotating injection pump of variable rotating speed includes shell, collecting liquid pipe, bearing box, hub, impeller, drive shaft, driven shaft, first transmission gear and second transmission gear, one end of shell connects the pump cover, the other end of shell connects bearing box, the outside of pump cover connects water inlet section and water outlet section, and the hub is arranged in the shell with impeller, and the cantilever end of collecting liquid pipe is located in rotor chamber, and the outlet pipe end of collecting liquid pipe is connected with water outlet section, and the first transmission gear is installed on drive shaft, and one end of driven shaft is connected with hub, and the second transmission gear is installed on the other end of driven shaft, and the first transmission gear and second transmission gear directly or indirectly engage transmission drive. The utility model discloses through replacing transmission gear to realize the increase and decrease of rotating speed, satisfy various work scene, the assembly method can ensure that each component of pump can be assembled together accurately to realize the high performance operation of pump.

Efficiency of a turbine at low flow rate is improved. A variable capacity turbine has a turbine rotor, scroll flow path forming portions that form scroll flow paths, exhaust gas flow path forming portions that form exhaust gas flow paths for guiding exhaust gas from the scroll flow paths to the turbine rotor, and a variable nozzle unit that includes a plurality of nozzle vanes (6) disposed in the exhaust gas flow paths and configured to be able to rotate around respective rotation centers. The exhaust gas flow path forming portions include a first plate-shaped member (41) having a ring-shaped first plate portion (43), and a second plate-shaped member having a ring-shaped second plate portion disposed on the turbine outlet side in the axial direction of the turbine rotor compared to the first plate portion, and delimiting the exhaust gas flow paths between the second plate portion and the first plate portion. The first plate-shaped member is formed with at least one groove portion (7) extending from the inner periphery of the first plate portion to the outer periphery side in a hub side flow path surface of the first plate portion facing the exhaust gas flow paths.

The application discloses a variable-capacity vapor chamber with a mechanical metamaterial composite support structure and a preparation method thereof. The variable-capacity vapor chamber comprises oppositely arranged upper and lower shells, liquid-absorbing cores fixed to the inner sides of the upper and lower shells, a plurality of superstructure columns arranged between the two liquid-absorbing cores, and a circumferentially arranged flexible sealing structure. The superstructure column is formed by wrapping the outer surface of the flexible liquid-absorbing core in the mechanical metamaterial in the full circumferential direction. The mechanical metamaterial serves as a bearing framework, and the flexible liquid-absorbing core serves as a capillary transport channel for working fluid return. The superstructure column is used for reversible deformation in the thickness direction to realize cavity volume change and maintain capillary transport continuity during the deformation process. Meanwhile, the nonlinear mechanical response of the mechanical metamaterial realizes vibration attenuation and impact energy absorption. The application integrates heat transfer, variable capacity, vibration isolation and energy absorption functions in one, and is suitable for application scenarios with dual stringent requirements for thermal management and vibration reduction, such as aerospace equipment and high-power electronic devices.

The variable-capacity compressor comprises a second air cylinder and a second flange, a pin hole is formed in the second flange, a first pin valve is arranged in the pin hole, one end of the pin hole is connected with a variable-capacity cavity, a first pressure relief channel and a pin valve mounting hole are formed in the first pin valve, the first pressure relief channel is communicated with the variable-capacity cavity, and the pin valve mounting hole is communicated with the second air cylinder. The second pin valve is arranged in the pin valve mounting hole, one end of the second pin valve is relatively communicated with the first pressure relief channel so as to bear the pressure in the variable volume cavity, and the other end of the second pin valve can introduce the pressure in a shell cavity of the compressor to serve as back pressure, and the second flange is provided with a second pressure relief channel; one end of the second pressure relief channel communicates with a shell cavity of the compressor, and the other end of the second pressure relief channel can communicate with the variable volume cavity through the pin valve mounting hole and the first pressure relief channel so that pressure relief can be conducted on the variable volume cavity. According to the invention, the problems of noise, jittering and the like generated when the variable-capacity compressor is started after long-time low-temperature standing can be solved.

A variable capacity turbocharger (1) includes a plurality of nozzle vanes (21) which are provided in a nozzle (13) of a turbine (2) in an openable and closable manner, a link mechanism (22) which is linked to the plurality of nozzle vanes, a mechanism chamber (23) which is formed in a turbine housing (4) and accommodates the link mechanism, a bearing (24) which is provided in the turbine housing so as to communicate the mechanism chamber with the outside of the turbine housing, and an operation shaft (25) which is rotatably provided in the bearing and has one end connected to the link mechanism. A bearing rust prevention device of the variable capacity turbocharger includes a gas supply device (50) which is configured to supply pressure gas from the outside of the turbine to contact portions (43), (44) of the bearing and the operation shaft.

The invention relates to a pressure regulating mechanism of a new energy expansion water tank and an intelligent variable-capacity variable-pressure expansion water tank, and relates to the technical field of expansion water tanks, the pressure regulating mechanism of the new energy expansion water tank comprises a shell, a pressure assembly, a vacuum assembly and a first regulating assembly, and the pressure assembly comprises a pressure valve element and a pressure spring; the vacuum assembly comprises a vacuum valve element and a vacuum spring, the first adjusting assembly comprises a first power piece, an adjusting cover and an adjusting spring, in the high-altitude environment or the high-temperature state, the adjusting cover can press the pressure spring and the adjusting spring, the opening pressure of the pressure valve element is increased, the opening pressure of the vacuum valve element is reduced, and in the low-temperature state, the adjusting cover can press the pressure spring and the adjusting spring. The adjusting cover can release the pressure spring, so that the opening pressure of the pressure valve core can be reduced; the intelligent variable-capacity and variable-pressure expansion water tank comprises a water tank body, a capacity adjusting mechanism and the pressure adjusting mechanism of the new energy expansion water tank. The volume and pressure of the expansion water tank can be adaptively adjusted based on the environment and working conditions.

The utility model provides a capacity-variable heat exchanger suitable for refrigerating and heating double pipelines, which comprises a main heat exchanger A, an auxiliary heat exchanger B, a normally open solenoid valve, a one-way valve 6-1, a one-way valve 6-2 and pipelines with different pipe diameters, the main heat exchanger A is externally connected with a four-way valve through a first port, and the main heat exchanger A is externally connected with a heating loop B through a second port; the position, close to the main heat exchanger A, of the heating loop B is connected with a refrigerating loop A through a one-way valve 6-1, a normally-open electromagnetic valve is arranged in the heating loop B, the output end of the heating loop B is connected with a filter 5-1 through a one-way valve 6-2, the filter 5-1 is externally connected with a host throttling valve, and the input end of the refrigerating loop A is connected with the filter 5-1. According to the fluorine cycle unit provided with the variable-capacity heat exchanger, by adjusting the three parameters including the heat exchange capacity, the refrigerant amount, the flow velocity and the pipe diameter of the unit heat exchanger, the professional heating standard can be met, and meanwhile the professional refrigeration standard can be met.

A method for operating a variable capacity drive circuit (800) for a compressor (64, 100) includes: operating a four-quadrant switch (804) and a second four-quadrant switch (806) in a first state, wherein in the first state, the first four-quadrant switch (804) is closed and the second four-quadrant switch (806) is open (1202), such that the voltage experienced by the motor (808) is equal to the AC line voltage (802); and operating the first four-quadrant switch (804) and the second four-quadrant switch (806) in a second state, wherein in the second state, the first four-quadrant switch (804) is open and the second four-quadrant switch (806) is open. The four-quadrant switch (806) is closed (1204) so ​​that the voltage experienced by the motor (808) is zero; a positive trigger angle (1010) and a negative trigger angle (1012) are provided (1206); the positive trigger angle (1010) and the negative trigger angle (1012) define when the first four-quadrant switch (804) and the second four-quadrant switch (806) operate in each of the first and second states (1208); the positive trigger angle (1010) and the negative trigger angle (1012) are used to switch between the first and second states at a switching frequency determined by the AC line voltage frequency (1210).

A screw compressor and a variable capacity bypass valve for a screw compressor are provided that include a bore formed in a rotor bore discharge face of a compressor housing upstream of a compression chamber outlet end of the compression chamber, a sliding valve member inserted into the bore to block the bore cavity, the valve member having a sealing surface configured to interact with threads of the compressor screw during operation of the screw compressor, and an actuator structure coupled to the valve member and oriented to move the valve member radially along the bore to open a fluid path communicatively connecting the compression chamber with a bypass chamber configured to return compressed fluid to a fluid inlet of the compression chamber.

An oil supply apparatus includes a variable capacity oil pump 81, a hydraulic pressure detection section 50a detecting a hydraulic pressure in an oil supply passage 5, an oil control valve 84 changing an oil discharge amount, a mechanical relief valve 81z partially discharging oil to outside of the oil supply passage when a discharge hydraulic pressure of the oil pump exceeds an upper limit pressure, a temperature detection section 50b detecting a temperature of an engine, and a control section 60. When the temperature is equal to or higher than a set temperature, the oil control valve is subject to feedback control such that the hydraulic pressure matches a target hydraulic pressure. When the temperature is lower than the set temperature, the feedback control is prohibited, and the oil control valve is controlled such that an oil discharge amount becomes a maximum amount.

The bucket quick-release mechanism and the variable-capacity loader bucket are applied to connecting a bucket body and bucket side plates with different widths, the bucket quick-release mechanism comprises two fixing plates, two transverse rods and a hydraulic locking mechanism, the two fixing plates are installed on the back faces of the bucket side plates, the two transverse rods are arranged between the two fixing plates, and a stable butt joint space is formed; meanwhile, a hydraulic locking mechanism is arranged on the back face of the bucket body, when the butt-joint assembly enters the space, clamping heads on the two sides of the butt-joint assembly can be in butt joint with the transverse rod, the abutting plate is tightly attached to the opposite side faces of the fixing plate, and therefore accurate positioning and reliable fixing are achieved, and the bucket end plates with different widths can be conveniently and rapidly replaced through the structure. The problems that side plates of a traditional bucket cannot be replaced, and the capacity is inconvenient to adjust are effectively solved.

The utility model belongs to liquid variable capacity type mechanical technical field, concretely relates to a piezoelectric gas control device, and the piezoelectric gas control device includes: mounting bracket, and the first air pump mechanism and the second air pump mechanism are arranged on it and are stacked, the first air pump mechanism and the second air pump mechanism all include: end cover, one-way diaphragm subassembly and vibration subassembly, wherein the end cover is connected with the end of mounting bracket to compress the vibration subassembly, and forms the chamber between end cover and vibration subassembly, the piezoelectric gas control device is stacked with the first air pump mechanism and the second air pump mechanism to reduce the space of device overall occupation, simultaneously, through the support sheet with window and the guide film and the first guide hole group with the misplacement hole three stacked, the one-way bending of guide film has been realized.