30results about How to "Easy to start" patented technology

This utility model discloses a short-circuit troubleshooting tool for electronic cigarette batteries. It relates to the field of electronic cigarette testing technology and includes a testing component. The testing component has a replacement component at its bottom. The testing component includes a handle, a connecting part at its bottom, a mounting block at the bottom of the connecting part, and a connection hole at the bottom of the mounting block. The replacement component includes a replacement head, a mounting slot at its top, and a connection plug fixedly installed inside the mounting slot. The mounting block is inserted into the mounting slot, and the connection plug is inserted into the connection hole. The replacement head has a testing head at its bottom, a positioning head at its bottom, and an electrode contact at its bottom. This utility model allows for convenient replacement of the replacement component according to the electronic cigarette battery to be tested, facilitating short-circuit troubleshooting and possessing high practical value.

This utility model belongs to the technical field of fertilization equipment, specifically a lily planting fertilization device, including a frame. A pesticide delivery assembly is installed on the top of the frame, and a delivery pipe is installed at the delivery end of the assembly. The delivery pipe is fixedly connected to the frame. A second motor is fixedly connected to the middle section of the bottom of the frame. A spraying assembly is installed outside the second motor, and evenly distributed nozzles are installed at the spraying end of the spraying assembly. Travel wheels are rotatably connected to both sides of the frame. This utility model provides a lily planting fertilization device that uses a second motor to drive a transmission frame and transmission pipe to rotate the distribution pipe and nozzles at a uniform speed. During this uniform rotation, the nozzles can cover a wider area and evenly distribute fertilizer, ensuring that each part of the lily receives the same nutrition. The entire spraying process can be automated, eliminating the tedious work of manually adjusting the spray angle.

The invention provides mobile welding equipment, which comprises a box body, a first welding assembly, a second welding assembly, a first welding assembly, a second welding assembly, a first welding assembly, a second welding assembly and a second welding assembly, and is characterized in that the box body is movably arranged, and a first mounting area and a second mounting area are arranged in the box body; the first opening and closing component is arranged on the box body, the first opening and closing component is arranged opposite to the first mounting area, and the first opening and closing component is arranged in an opening and closing mode relative to the box body so as to open or close the first mounting area; and the second opening and closing component is arranged on the box body, the second opening and closing component is arranged opposite to the second mounting area, and the second opening and closing component is arranged in an opening and closing mode relative to the box body so as to open or close the second mounting area. And the service life of the device is shortened.

The utility model discloses an asymmetric cooperative control three-phase balance motor soft starter, comprising a three-phase AC power supply input end, a power adjusting unit, an output end connected to a three-phase asynchronous motor, and a main controller which are connected in sequence. The power adjusting unit comprises an A-phase control module which is internally provided with a first thyristor at least controlled by a main controller; the B-phase control module is internally provided with a pair of antiparallel second thyristors controlled by the main controller; and the C-phase control module is internally provided with a pair of third thyristors which are controlled by the main controller and are reversely connected in parallel. The main controller cooperatively controls the conduction angles of the first thyristor, the second thyristor pair and the third thyristor pair in the starting process of the motor by outputting a control signal so as to adjust the voltage applied to the motor and improve the balance of the three-phase output voltage. According to the utility model, the three phases are controlled, so that the three-phase balance during starting is effectively improved, and the vibration and noise of the motor are reduced.

The application relates to the technical field of intelligent household appliances, and discloses a method and device for controlling a remote controller and the remote controller, wherein the method comprises the following steps: collecting a distance signal between a user and a television, an ambient light intensity signal and an acceleration signal of the remote controller; generating a display parameter adjustment instruction of the television based on the distance signal and the light intensity signal; judging whether the user is in a sedentary state based on the acceleration signal, and executing a sedentary intervention process if the user is in the sedentary state; and executing corresponding health guardianship functions in response to a triggering operation of a preset function key on the remote controller. The health guardianship functions include eye protection interactive functions and emergency call functions. The application can realize interactive intervention on the health condition of a user through automatic collection and processing of multiple signals, comprehensive judgment of the environment and behavior, closed-loop intervention process execution and one-key integration of core functions.

The utility model discloses a ground source heat pump cooling and heating auxiliary system which comprises a ground source heat pump main machine, an energy storage assembly installed on the ground and an auxiliary heating assembly, and a buried pipe heat exchange mechanism is communicated between the heat exchange water input end and the heat exchange water output end of the ground source heat pump main machine. The energy storage assembly comprises a base, and an energy storage mechanism and a temperature sensing control module which are fixed on the base; the auxiliary heating assembly comprises a water storage tank and a plurality of auxiliary wells, the water storage tank is communicated with a heat exchange part, and the heat exchange part extends into the auxiliary wells; the inner wall of the water storage tank is connected with an electric heater; a partition piece is fixed on the inner side of the water storage tank, and communicating holes which are uniformly distributed are formed in the partition piece; the partition piece divides the interior of the water storage tank into two spaces which are communicated up and down; and the actual power consumption can be reduced while the indoor comfortable temperature can be guaranteed, the actual power consumption can be reduced by adopting clean energy, and a certain energy-saving effect is achieved.

The utility model discloses a hot stamping die for processing a locking nut, which relates to the technical field of manufacturing of mechanical parts and comprises a support frame and a heating seat arranged on the support frame, a hydraulic oil cylinder is arranged on the support frame, a lower die is arranged on the heating seat, a mounting plate is fixedly arranged at the output end of the hydraulic oil cylinder, and the lower die is arranged on the mounting plate. An upper mold is arranged on the mounting plate, and the upper mold and the lower mold are matched to be used for manufacturing the locking nut through hot pressing; and the cooling mechanism comprises an atomization nozzle arranged on the outer side of the lower mold, the water inlet end of the atomization nozzle communicates with an extension pipeline, one end of the extension pipeline fixedly communicates with a water pump, the water inlet end of the water pump communicates with a water outlet pipeline, and the end, away from the water pump, of the water outlet pipeline communicates with a water tank. According to the hot stamping die for machining the locking nut, the locking nut can be conveniently manufactured through die hot pressing, the die assembly can be cooled during machining, and therefore the machining efficiency is improved.

The utility model discloses a raw material crushing device for white spirit production, and relates to the technical field of white spirit production. Comprising a raw material crusher box body, a first connecting shaft and a second connecting shaft, a driving motor is fixedly mounted at the top of a motor frame, a rotating shaft is fixedly connected to the output end of the driving motor, a driving gear is fixedly connected to the end, close to the driving motor, of the outer surface of the rotating shaft, and crushing blades are fixedly connected to the outer surface of the rotating shaft; a transmission box is fixedly installed in the middle of the left side of the raw material pulverizer box body, and a first slope is arranged at the position, close to the left side, of the inner bottom wall of the raw material pulverizer box body. A second slope is arranged at the position, close to the right side, of the inner bottom wall of the raw material pulverizer box, a feeding end is arranged at the position, close to the right side, of the top of the raw material pulverizer box, first spiral blades are arranged on the outer surface of the first connecting shaft, and second spiral blades are arranged on the outer surface of the second connecting shaft.

The application discloses a hand exercise device, which comprises a ring body, a counterweight and a handle. The ring body is internally provided with a rolling channel arranged in a circle. The counterweight is rollingly installed in the rolling channel. The handle is installed on the ring body, is arranged along the radial direction of the ring body and is located on the outer side of the ring body, so that the hand exercise device is in the shape of a racket. The handle is arranged on the ring body, so that the hand exercise device is in the shape of a racket and is convenient for a user to hold. Meanwhile, the handle also increases the shaking distance of the counterweight and the hands of the user. When the hand exercise device is shaken with the wrist, the elbow or the shoulder as the origin, compared with the exercise device with only a ring or the exercise device with a handle arranged in the ring body, the counterweight of the hand exercise device provided by the application can have a longer starting distance, so that the starting of the counterweight is more convenient or the counterweight is started with less power. Therefore, the application range of the hand exercise device provided by the application is improved.

This application discloses a portable gripping device, belonging to the field of gripping tool technology. It includes a mounting base with a vacuum mechanism connected to a suction cup assembly. The vacuum mechanism is used to extract air from the suction cup assembly's inner cavity to create negative pressure when the suction cup assembly contacts an object to be gripped, thus allowing the suction cup assembly to adhere to the object. A handle is connected to the side wall of the mounting base. The handle contains a power module connected to the vacuum mechanism, and a control switch is located on the side wall of the handle. The handle's inner cavity contains a battery compartment for housing the power module, and a battery compartment cover is provided on the side wall of the handle to cover the battery compartment. The portable gripping device also includes a sealing sleeve that is fitted onto the handle and seals the battery compartment. By incorporating a vacuum mechanism inside the mounting base connected to the suction cup assembly on the outside of the mounting base, and providing a handle on the side wall of the mounting base, the device is convenient for one-handed use, and the overall structure is more streamlined, portable, and easy to use.

The invention discloses a hybrid vertical axis wind turbine of a nautilus shell bionic structure and a method. The hybrid vertical axis wind turbine comprises a center fixed stand column; the first-stage wind wheel comprises nautilus shell bionic blades, and the first-stage wind wheel is rotatably arranged at the first height position of the center fixed stand column and used for receiving and utilizing original wind energy; the flow guide speed increasing cover is fixedly installed on the center fixing stand column and located on the downwind side of the first-stage wind wheel, and a speed increasing slit is formed in the top of the flow guide speed increasing cover; the second-stage wind wheel comprises lifting force type blades, and the second-stage wind wheel is rotatably arranged at the second height position of the center fixed stand column and located in the inner space defined by the wind sheltering flow guide cover; and tail gas generated by the first-stage wind wheel is guided into the flow guide speed-increasing cover through the speed-increasing slit so as to drive the second-stage wind wheel to rotate. Wake flow is captured and generated through the first-stage bionic wind wheel, the wake flow drives the second-stage independent wind wheel after being accelerated through the flow guide cover, and the problems that a vertical axis wind turbine is difficult to start at low wind speed and the single-time wind energy utilization rate is low are solved.

The utility model discloses a toilet flushing switch auxiliary device belongs to water supply and drainage technical field. Including fixed assembly, fixed assembly is fixed on the outer periphery of toilet flushing switch, press assembly, press assembly has one end rotation connection on the press handle of fixed assembly, and is connected on the press handle press piece, press piece is towards toilet flushing switch one side, and rotates with press handle, presses toilet flushing switch, drive assembly, drive assembly one end is connected on press assembly, is used for driving press assembly rotation. Fixed assembly is used for fixing press assembly at the outer periphery of toilet flushing button. Drive assembly one end connects press handle, provides power for its rotation above toilet flushing switch, simultaneously its other end connects the kick button. Through fixed assembly, press assembly and drive assembly cooperation can realize the kick button start toilet flushing action of easy and convenient realization, and simple structure, convenient to use.

This utility model discloses an electrically started lawnmower, including a pole assembly with a mowing head at one end and an engine at the other. The electric starting device includes an electric starter assembly and an electronic control assembly. The electric starter assembly is connected to the engine via a transmission connection, and the electronic control assembly is mounted on the pole assembly and connected to the electric starter assembly via a first wire. The electronic control assembly has a battery holder with a start button and a battery pack on it. The electric starter assembly includes a motor and a gear set. The battery pack is electrically connected to the motor via the start button and the first wire. The motor output engages with the gear set, and the gear set output is connected to the engine input. This lawnmower reduces the reliance on physical force for starting by using an electric starting device, solving the drawbacks of manual starting, improving the convenience for different user groups, and also features safety protection and shock absorption structures.

This invention discloses a nitrogen-doped carbon-coated ternary nanoneedle array material, its preparation method, and its application in the electrolysis of hydrazine hydrate, belonging to the field of energy catalysis technology. The material comprises a substrate, a ternary nanoneedle array grown on the substrate surface, and a nitrogen-doped carbon material supported on the ternary nanoneedle array and the substrate surface; the ternary nanoneedles are composed of any three of iron, cobalt, copper, nickel, and manganese. This invention proposes an NC-supported ternary nanoneedle array, where NC and the ternary nanoneedle array synergistically achieve enrichment of active sites and enhancement of intrinsic activity, effectively improving the conductivity of the ternary nanoneedle array. For hydrogen evolution reaction and oxygen evolution reaction, electrons can be rapidly transferred between the catalyst surface and reaction intermediates, thereby accelerating the reaction rate. Simultaneously, this coating structure, by adjusting the adsorption energy, makes it easier for water molecules to be adsorbed and activated on the catalyst surface, thus promoting HzOR catalytic activity.

The utility model relates to the technical field of wireless data transceivers, and discloses a wireless data transceiver with an infrared function, which comprises a bottom plate, the back of the top of the bottom plate is fixedly connected with a fixing plate, and the front of the fixing plate is provided with a fixing mechanism. And the T-shaped groove is matched with the T-shaped block, so that the pressing plate can easily slide up and down. When the transceiver main body is installed, the pull plate is pulled to drive the T-shaped block and the pressing plate to ascend, after the transceiver main body is placed at a proper position on the bottom plate, the pull plate is loosened, and the pressing plate is pressed downwards under the gravity effect of the T-shaped block to tightly press the transceiver main body. At the moment, the bolt is rotated to tightly abut against the position, close to the front face, of the left side of the fixing block, the T-shaped block is further fixed through friction force, accidental sliding of the T-shaped block due to external force vibration and other factors is prevented, it is ensured that the transceiver body is stably installed on the bottom plate, and the problems of unstable connection or abnormal data transmission and the like caused by shaking and displacement in the using process are effectively avoided.

The present disclosure provides "Methods and systems for adjusting engine cylinder air charge." Systems and methods for operating an internal combustion engine based on an output of an intake manifold pressure sensor and an output of a cylinder pressure sensor are described. The systems and methods provide a way of determining a cylinder air charge such that a fuel injector has sufficient time to provide a desired amount of fuel to a cylinder during a cycle of the cylinder.

The application discloses an internal combustion engine preheating device which is used for preheating the bottom of an oil pan of a large engine and comprises a preheating mechanism, an air inlet joint, an air outlet joint and a preheating pipeline. The preheating mechanism is fixedly connected with the bottom of the oil pan to form a preheating sealed preheating cavity, and one end of the preheating mechanism is provided with a first opening and a second opening. The air inlet joint is fixed on the first opening and is used for allowing high-temperature gas to enter. The air outlet joint is fixed on the second opening and is used for discharging the high-temperature gas. The preheating pipeline is arranged in the preheating mechanism, one end of the preheating pipeline is detachably fixedly connected with one end of the air inlet joint, and the other end of the preheating pipeline is detachably fixedly connected with one end of the air outlet joint. Therefore, the internal combustion engine preheating device is simple and reasonable in structure, can heat the oil pan and is beneficial to starting the engine.

The invention relates to the technical field of engine equipment, and discloses an unmanned aerial vehicle engine with a heating component, the unmanned aerial vehicle engine comprises a crankcase and a plurality of cylinder bodies fixed on the two sides of the crankcase, an air inlet channel is fixed on the crankcase, a crankshaft is rotatably installed in the crankcase, the central axis of the crankshaft is perpendicular to the central axis of the cylinder bodies, and the heating component is fixed on the cylinder bodies. A piston is arranged in each cylinder body in a sliding mode, and a connecting rod is rotationally connected between the piston and the crankshaft; a ventilation channel and an exhaust channel are arranged on the side wall of the cylinder body, the ventilation channel is communicated with the interior of the crankcase, and a heating assembly with one end extending into the ventilation channel is fixed to the cylinder body. The heating assembly comprises a connecting shell and a heat conduction rod fixed in the connecting shell. The heat conduction rod extends into the ventilation channel to preheat gas entering the cylinder body, so that fuel oil can be fully atomized to facilitate ignition, and an engine can be easily started in a low-temperature environment.

The invention discloses a compressor, a heat management system, a control method of the heat management system, a computer storage medium and a vehicle. The compressor comprises a low-pressure cavity, a high-pressure cavity, an electric control cavity, a heating device, a motor, a compression mechanism and an integrated electric control device; the low-pressure cavity communicates with the high-pressure cavity, the low-pressure cavity is connected with an air suction channel, and the high-pressure cavity is connected with an exhaust channel; the heating device and the motor are arranged in the low-pressure cavity; the compression mechanism is arranged in the high-pressure cavity; the integrated electric control device is arranged in the electric control cavity; the integrated electric control device can independently control the heating device and the motor at the same time. According to the compressor, the heating device and the motor in the embodiment of the invention, the refrigerant in the low-pressure cavity can be cooperatively heated, the compressor can be well started in a low-temperature environment and can be well operated after being started, and the compressor is simple in structure and low in cost.

The utility model relates to the technical field of refrigeration equipment, more particularly to a direct-cooling ice maker water de-pressurization ice removing device and direct-cooling ice maker. The ice removing device is installed in the direct-cooling ice maker, the direct-cooling ice maker includes an evaporator, an evaporative condenser and a high-pressure air inlet pipeline, includes evaporator high-pressure air inlet branch pipeline, it is introduced from evaporative condenser high-pressure air inlet pipeline, and is equipped with evaporator high-pressure air inlet branch pipeline valve. Let the high-pressure part of evaporative cold high-pressure air inlet pipeline hot gas enter the evaporator, improve the temperature of evaporator, heat to the ice mould, cooperate ice removing water ice removing simultaneously, reduce the ice removing time, improve the efficiency, reduce the ice removing time. Still can reduce the compressor exhaust section pressure, be favorable to the start of next ice making compressor.

The utility model relates to the technical field of safety equipment, in particular to a wearable positioning alarm camera device which comprises a wearing helmet, an energy storage box is fixedly connected to the rear side of the wearing helmet, an assembly frame is fixedly connected to the upper side of the wearing helmet, and a control motor is fixedly connected to the lower side of the inner wall of the assembly frame. The output end of the control motor is fixedly connected with a connecting rod, and a camera is arranged on the connecting rod. According to the utility model, the alarm push switch, the WiFi control module, the camera and other components are arranged, the alarm push switch is pressed, the WiFi control module is used for giving an alarm to the terminal, one-key help calling is realized, timely rescue is facilitated, the terminal can also control the camera to rotate, and a monitor can check pictures, evaluate field conditions and start an emergency plan conveniently. The position change condition of personnel can be detected in daily life, and the gas condition can be detected by using the gas sensor, so that safety problems can be found in time and rescue measures can be taken.

The present application provides a large size touch display integrated (LTDI) circuit and an operating method thereof. The LTDI circuit is adapted as a slave integrated circuit of a serial peripheral interface (SPI) architecture. The LTDI circuit comprises an open drain circuit and a reload circuit. An output terminal of the open drain circuit is coupled to a correctness wire outside the LTDI circuit. The correctness wire is also coupled to an input terminal of a master integrated circuit of the SPI architecture, and a potential of the correctness wire is pulled up by a pull-up resistor. The reload circuit is coupled to an input terminal of the open drain circuit. The reload circuit is used to check correctness of a start code from the master integrated circuit to generate a correctness check result. The reload circuit transmits the correctness check result back to the master integrated circuit through the open drain circuit and the correctness wire.

This invention provides a low-temperature micro-plasma jet generator and its preparation method, comprising: an ultrasonic jet generator for generating ultrasonic jets; and a micro-plasma generator for generating plasma; wherein the ultrasonic jet generator and the micro-plasma generator are integrated into a single, sheet-like structure. The ultrasonic jet generator is located in the middle of the micro-plasma generator, effectively enhancing the transverse wave effect of negative oxygen ions and ozone waveguides through the ultrasonic jet effect. This invention integrates the ultrasonic jet effect and the generation of low-temperature micro-plasma, effectively solving the problem of low transverse waveguide efficiency for the propagation of low-temperature negative oxygen ions and ozone. It can be used in plasma disinfection and sterilization scenarios, providing an effective approach for the miniaturized integrated manufacturing of related products.

This utility model discloses an emulsified asphalt heating device for road paving, comprising a frame, a pusher plate, and a mixing assembly. The frame has fixing ears on both sides of its bottom. A support base is mounted on the upper surface of the frame via an L-shaped fixing plate. A pusher plate is mounted on top of the support base. A first vertical support plate and a second vertical support plate are mounted on both sides of the upper surface of the pusher plate. A heating tank is mounted on the first and second vertical support plates via a rotating connecting rod. An electric heating plate is mounted on the upper surface of the pusher plate, and the electric heating plate is located directly below the heating tank. The two vertical support plates of this utility model provide excellent lateral support, preventing lateral displacement or deformation of the pusher plate under stress, thereby ensuring the stability and durability of the entire structure.

The application discloses a high-efficiency sewage treatment anaerobic tower, relates to the technical field of sewage treatment equipment, and solves the problems that sewage in the existing sewage treatment anaerobic tower is difficult to be fully mixed with sludge and is prone to be blocked by the sludge. The high-efficiency sewage treatment anaerobic tower comprises an anaerobic tower main body, a water distribution structure is arranged in the anaerobic tower main body, the water distribution structure comprises a plurality of water distribution layers which are arranged in layers from top to bottom, an inlet is arranged in each water distribution layer, a plurality of outlets which are in communication with the inlets are further arranged on the periphery of each water distribution layer, one or more water inlets are connected to the anaerobic tower main body, the water inlets are in communication with the inlets of one or more water distribution layers, a guide pipe is connected to the outlet of each water distribution layer, and the guide pipe guides the spiral upward movement of water. The sewage and the sludge are fully mixed through the multilayer spiral structure, and a plurality of water distribution layers are arranged in layers, so that the sewage treatment efficiency is improved, and the blocking effect is reduced.

The embodiment of the present specification provides a Kubernetes-based application starting method, which involves a first party and a second party. The first party is deployed with a task scheduling service, and the second party is deployed with a load management service, a configuration rendering plug-in and a configuration management service. The method comprises the following steps: the task scheduling service creates a first resource under the namespace of the second party in the Kubernetes cluster to which the task scheduling service belongs according to the starting instruction of the privacy computing application, and the first resource is used to store the input parameters and the starting configuration template of the privacy computing application. The load management service sends a calling instruction to the configuration rendering plug-in after listening to the creation of the first resource under the namespace of the second party. The configuration rendering plug-in reads the target information pre-registered for the privacy computing application from the configuration management service, fills the input parameters and the target information into the starting configuration template, and obtains the configuration information of the privacy computing application. The load management service starts the privacy computing application based on the configuration information received from the configuration rendering plug-in.

The utility model relates to band saw blade technology field discloses a bimetal band saw blade, including: back material, the lateral wall of back material is equipped with a plurality of clamping grooves, replacement structure is the sawtooth band or sawtooth module of detachable installation in back material bottom, sawtooth band forms the sawing surface of equal length with back material in back material bottom, a plurality of sawtooth modules form the sawing surface of equal length with back material in back material bottom, through setting up the sawtooth band of equal length with back material, through the sawtooth band deformable sawtooth band and the first lock block of sawtooth band lateral wall, utilize the deformation reset of sawtooth band to make the first lock block clamping into clamping groove and realize the fixing and spacing of sawtooth band, and the dismounting is simple and quick, and cooperation detachable sawtooth band can realize functional division and quick replacement, through setting up detachable sawtooth band, according to the different selection different pitch and different angle sawtooth body no.

The utility model provides a heat preservation device of a melt-blown non-woven fabric extruder, which comprises an extruder table and a feeding box, the feeding box is communicated with and arranged above the extruder table, a heating base is arranged on the upper surface of the extruder table, the lower part of the feeding box is arranged inside the heating base, and the upper part of the feeding box is communicated with the extruder table. A temperature control panel is arranged on one side of the heating base, heating plates are evenly distributed in the heating base at equal intervals and electrically connected with the temperature control panel through a converter, two sets of mounting plates are symmetrically and fixedly connected to the two sides of the heating base, and through grooves are formed in the upper portions of the mounting plates. And positioning assemblies are symmetrically installed in the two through grooves at equal intervals, one ends of the positioning assemblies are attached to the outer wall of the feeding box, the positioning assemblies are installed on the upper surface of the extruding machine table in a communicating mode through the arranged feeding box and store raw materials for spraying and melting non-woven fabric, an air heater is arranged on one side of the feeding box, and heat is supplied into the feeding box through an air pipe of the air heater.

The utility model discloses an improve and start structure of reciprocating piston compressor, relate to compressor starting technical field, including compressor main part, the high pressure cavity structure and cylinder cover structure of compressor main part's upper installation are provided with through -hole between high pressure cavity structure and cylinder cover structure, and through -hole and high pressure cavity structure and cylinder cover structure intercommunication setting, the inside of high pressure cavity structure is provided with connecting seat, and connecting seat and high pressure cavity structure fixed connection, the inside of high pressure cavity structure is provided with valve piece, be provided with connecting shaft between both sides of connecting seat of valve piece upper end, connecting shaft and connecting seat rotatory connection, this compressor increases valve piece structure through in cylinder seat high pressure cavity side, separates cylinder cover and high pressure cavity, forms two separate areas, and when high pressure cavity side exhaust pressure is little, valve piece is in the open and close state, until high pressure cavity side and cylinder cover side pressure, will not exist cylinder cover side pressure increase, influences the condition of starting.

This invention relates to a synchronous electric device and its starting method. The device includes at least a control component, a first rotor, and a second rotor. The first rotor has a first working winding for driving the second rotor to rotate. When the first rotor rotates to its rated speed, alternating current is applied to the first working winding, generating a rotating magnetic field. The control component sets the rotational speed of the air gap magnetic field between the first and second rotors to a minimum value. The control component adjusts the speed of the first rotor in a manner that gradually increases the rotational speed of the air gap magnetic field between the first and second rotors from its minimum value. Thus, the first rotor provides electromagnetic torque to the second rotor, synchronizing the speed of the second rotor with the rotational speed of the air gap magnetic field. This invention makes three-phase permanent magnet synchronous motors easier to start, reduces the cost of starting three-phase permanent magnet synchronous motors, and minimizes starting shock.