83 results about "Variable capacity" patented technology

The invention discloses an on-load tap-changer oil dissolved gas monitoring device which comprises a variable capacity container, a two-way electromagnetic valve, a switching mechanism, a chromatographic column system, a high-sensitivity detector and a low-sensitivity detector which are sequentially connected, and the top and the bottom of the variable capacity container are connected through a circulating pump to form a gas flow loop. The variable-capacity container is connected with the on-load tap-changer through a connecting pipe, the switching mechanism is connected with at least two quantitative pipes with different capacities, and the switching mechanism is used for equally transferring gas in the variable-capacity container to the quantitative pipes and then sequentially transferring the gas in the quantitative pipes to the chromatographic column system. The invention further discloses a method for monitoring the dissolved gas in the on-load tap-changer oil. According to the monitoring device and the monitoring method for the dissolved gas in the oil of the on-load tap-changer, the detection range of the concentration is improved, a concentration blind area which is not detected and misjudgment of signal saturation can be avoided, and the detection accuracy is improved.

The invention discloses stepless variable-pitch tightening equipment special for aviation equipment nuts. The stepless variable-pitch tightening equipment comprises a tightening machine, a horizontal posture adjusting mechanism, a length-adjustable tightening arm mechanism, a rotary posture adjusting and floating buffering mechanism, a screwing motor, a screwing motor support, a nut tightening force transmission sleeve, a wrench stepless variable-pitch executing mechanism, a nut screwing wrench, a force transmission shaft and a three-channel flexible cable traction mechanism. Under the condition that the basic function of nut tightening is not changed, tightening equipment is endowed with stepless pitch-variable capacity, even if nut mounting points in a cavity are not uniformly distributed in the circumferential direction or the radial sizes of different positions are different, the radial position of the nut tightening wrench can be dynamically changed through stepless pitch-variable adjustment, and the nut tightening effect is improved. According to the nut tightening wrench, the nut screwing sleeve on the nut tightening wrench can accurately move to any nut mounting point position, so that nut tightening work at different positions in the cavity can be smoothly completed, the use scene of tightening equipment is further expanded, and the application range of the tightening equipment is greatly widened.

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.

A variable-capacity turbocharger has: a turbine housing that accommodates a turbine impeller; a variable nozzle assembly with a nozzle vane arranged in a nozzle flow channel provided around the turbine impeller in the turbine housing, and a drive mechanism designed to drive the nozzle vane; a disc spring designed to bias the variable nozzle assembly in an axial direction so that it is pressed against a section of the turbine housing; and an engagement section in which the variable nozzle assembly and the turbine housing engage in such a way as to limit displacement of the variable nozzle assembly in a circumferential direction, the engagement section being located in a region radially outside a range of motion of the nozzle vane.

A variable-capacity turbocharger has: a turbine housing that accommodates a turbine impeller; a variable nozzle assembly with a nozzle vane arranged in a nozzle flow channel provided around the turbine impeller in the turbine housing, and a drive mechanism designed to drive the nozzle vane; a disc spring designed to bias the variable nozzle assembly in an axial direction so that it is pressed against a section of the turbine housing; a pin extending from the bearing housing; and a U-groove provided on the variable nozzle assembly that allows the insertion of a distal end of the pin.The U-groove has a pair of inner wall surfaces designed as parallel flat planes intersecting in the circumferential direction, and which hold the distal end of the pin between them in the circumferential direction, with the distal end of the pin being press-fitted between the inner wall surfaces.

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.

A border for a raised bed includes a plurality of wall elements connected to form an enclosure. Each wall element has a first end face and an opposing second end face, both provided with fastening elements. Each wall element further includes a first longitudinal side extending between the first and second end faces and a second longitudinal side opposite the first, extending parallel thereto. The wall elements are connected to adjacent wall elements via plug connections at their first and second end faces. Each wall element has a cross-section perpendicular to the longitudinal sides, comprising alternately arranged first and second sections. The first and second sections extend on opposite sides of the longitudinal center axis of the cross-section. An intermediate bottom is positioned at a variable height within the enclosure by engaging the first and second sections of opposing wall elements, perpendicular to the wall elements.

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.

The utility model discloses a variable capacity piston device, even in the case where the supporting ball uses steel material, can fully ensure the wear resistance, load resistance, can realize the low cost. The structure of the utility model discloses a variable capacity piston device is characterized in that, have: cylinder barrel (110), it is supported in the casing (102) in the mode that can rotate with the shaft (104) together, a plurality of pistons (112) are inserted in the cylinder barrel (110) in the mode that can slide along the axial direction, the inclined plate (120) makes the stroke change of piston (112), and two supporting balls (130) support the inclined plate (120) as can rotate, and the supporting ball (130) uses the steel material of tempering temperature 500 DEG C or more, and the surface is implemented with soft nitriding treatment.

A variable capacity mechanism according to the present invention comprises: a plurality of nozzle vanes; nozzle rings which are disposed so as to be spaced apart from each other along the axes of the plurality of nozzle vanes such that the plurality of nozzle vanes are sandwiched therebetween; and a drive ring which is disposed on the nozzle ring support surface side of one nozzle ring opposite from the flow path formation surface of the nozzle ring that faces the plurality of nozzle vanes and which can rotate about the rotation axis of a turbine rotor while being in contact with the nozzle ring. At least one of a first portion of the nozzle ring which is in contact with the drive ring and a second portion of the drive ring which is in contact the nozzle ring is provided with a removal structure which removes a deposit adhering to the first portion of the nozzle ring and / or the second portion of the drive ring.

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).

Problem: Provide a control calibration apparatus for a variable-capacity pump that can increase the flow control accuracy of the variable-capacity pump and a method thereof. Solution: The control calibration apparatus of the variable capacitance pump includes a controller that outputs a value of current for a flow rate command of the variable-capacity pump and a flow sensor that measures a flow rate of the variable-capacity pump. The controller has a function for obtaining a quadratic function formula that is a current-to-flow characteristic for flow control of the variable-capacity pump from a first value of current when the maximum flow rate of the variable-capacity pump is measured by the flow rate sensor, a second value of current when the minimum flow rate of the variable-capacity pump is measured by the flow rate sensor, and a fixed value of current corresponding to a fixed flow rate based on the specifications of the variable-capacity pump.

An abnormality diagnosis system according to one embodiment of the present invention is an abnormality diagnosis system for a variable capacity hydraulic pump (31 or 35) mounted on a construction machine, and is provided with: a pressure gauge (71 or 72) for detecting the suction pressure, discharge pressure, or discharge pressure of the hydraulic pump (31 or 35); and a control device (6). The control device (6) determines the presence or absence of an abnormality in the hydraulic pump (31 or 35) on the basis of the pressure detected by the pressure gauge (71 or 72) in a state in which the construction machine is operated under predetermined diagnostic conditions. The prescribed diagnostic condition is that the rotational speed and load of the hydraulic pump (31 or 35) are kept constant and the capacity of the hydraulic pump (31 or 35) is kept at a prescribed value greater than the minimum value.

The invention relates to the technical field of scroll compressor equipment, in particular to a variable capacity adjusting device and method of a scroll compressor, the adjusting device comprises a temperature sensing unit and a transmission unit, the temperature sensing unit comprises a temperature sensing bulb, the temperature sensing bulb is arranged at the position of an air inlet of the scroll compressor, and the temperature sensing bulb is used for sensing the temperature change of an air suction opening of the compressor; the transmission unit comprises a pressing piece, the pressing piece is connected with a temperature sensing bag, the temperature sensing bag can control the pressing piece to move, an elastic piece is connected to the pressing piece, and the pressing piece is connected with the static scroll plate through the elastic piece. The scroll compressor has the effect that the variable capacity adjusting convenience of the scroll compressor in the using process is improved.

A hydraulic system of an embodiment of the present application includes a variable displacement hydraulic pump that discharges working oil and includes a swash plate; a swash plate angle sensor that measures an angle of the swash plate; a swash plate drive piston that moves the swash plate of the hydraulic pump according to a change in pressure applied to a large diameter portion; a swash plate control hydraulic line for supplying a portion of working oil discharged by the hydraulic pump to the large diameter portion; a control valve provided on the swash plate control hydraulic line and that controls a flow rate of working oil supplied to or discharged from the large diameter portion; an electronic proportional pressure reducing valve that generates a pilot pressure to be transmitted to one side of the control valve; an operating device that generates an operating signal; and a control device that controls the electronic proportional pressure reducing valve according to the operating signal of the operating device and angle information of the swash plate angle sensor.

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.

The utility model discloses a bus duct variable-capacity section with a protection structure, which belongs to the technical field of bus duct variable-capacity sections and comprises a bus duct variable-capacity section body, the surface of the bus duct variable-capacity section body is fixedly connected with a first fixing block, and the surface of the first fixing block is fixedly connected with a first limiting rod. The surface of the first limiting rod is movably connected with a protection plate. The surface of the protection plate is fixedly connected with a second fixing block, and the interior of the second fixing block is in threaded connection with a two-way threaded rod. The inner wall of the bus duct variable capacitance joint body is fixedly connected with a motor, and the output end of the motor is fixedly connected with a first rotating shaft. According to the bus duct variable-capacity joint with the protection structure, the second bevel gear is connected with the fan, so that the heat dissipation efficiency of the device is improved, the fan can quickly break the retention state of hot air, heat is dissipated in time, the problems of electrical performance reduction and part aging caused by overheating are reduced, and the service life of the device is prolonged.

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 utility model belongs to the technical field of breeding equipment, and particularly relates to a variable-capacity feeding tray. The feeding disc comprises a base plate, a fixing cylinder is fixedly connected to the center of the top of the base plate, a plurality of discharging ports communicated with the base plate are formed in the lower end of the fixing cylinder at intervals in the circumferential direction, a mounting hole is formed in the upper portion of the fixing cylinder, a waterline is sleeved with the mounting hole, and feed conveyed by the waterline is conveyed into the base plate through the fixing cylinder; a blocking cover is arranged outside the chassis, the upper end of the blocking cover is fixedly connected with the upper portion of the fixing cylinder, the lower end of the blocking cover is slidably connected with the chassis, and the size of the space between the chassis and the blocking cover is adjusted by sliding the blocking cover up and down relative to the chassis. The feeding tray solves the problems that an existing feeding tray is not universal in size and capacity, and big chickens and small chickens need to be fed with feeding trays of two capacities respectively.

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.

This invention provides a pump assembly and a variable displacement compressor having the same, comprising: a cylinder having an inlet, a receiving cavity, and an outlet; a roller; a vane cooperating with the roller to divide the receiving cavity into a first inlet chamber and a first compression chamber; and a variable displacement member having a relatively disposed clearance state and a working state. The variable displacement member, the roller, and the vane cooperate to divide the receiving cavity into a buffer chamber, a second inlet chamber, and a second compression chamber, wherein the volume of the second compression chamber is smaller than the volume of the first compression chamber. When the contact position between the roller and the inner wall of the cylinder passes the variable displacement member, a second inlet chamber is formed between the variable displacement member and the roller, and the second inlet chamber communicates with the inlet. A second compression chamber is formed between the roller and the vane. The technical solution provided by this application can solve the problem in the prior art where, under low load operation, the compressor operates at a frequency lower than the minimum operating frequency, resulting in frequent start-stop cycles and a significant increase in compressor energy consumption.

The present application relates to the technical field of heat pump system, and propose a kind of variable capacity heat pump system and control method thereof, comprising: including compressor, first heat exchanger, second heat exchanger, variable capacity gas-liquid separator and for controlling refrigerant circulation direction's reversing valve;Wherein, the variable capacity gas-liquid separator includes inlet pipe, outlet pipe, first control valve, oil return hole and bottom not intercommunication first liquid storage area and second liquid storage area;The first control valve is arranged at the inlet pipe of the variable capacity gas-liquid separator, for controlling refrigerant inflow first liquid storage area and / or second liquid storage area;The outlet pipe of the variable capacity gas-liquid separator and the oil return hole are arranged in first liquid storage area, and the oil return hole is connected with the oil return pipe of the compressor;The variable capacity heat pump system of present application can give consideration to heat pump system operating efficiency and oil return effect.

This rotary swash plate hydraulic pump includes: a casing; a cylinder block disposed in the casing so as to prevent relative rotation of the cylinder block and including a plurality of cylinder bores that are open on one end surface of the cylinder block; a rotary swash plate rotatably housed in the casing so as to face the one end surface of the cylinder block; a plurality of pistons each of which is inserted into a corresponding one of the plurality of cylinder bores and reciprocates within the corresponding one of the plurality of cylinder bores by rotation of the rotary swash plate; and a variable capacity mechanism that changes an effective stroke length of at least one piston included in the plurality of pistons.

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.