66results about How to "Control open" patented technology

An infinite-level sectional reconstruction sliding sleeve device triggered by machinery or the hydraulic pressure comprises a cylinder body formed by an upper joint, a shell and a lower joint which are connected in sequence, an elastic sleeve, an inner sliding sleeve, a variable-diameter ball seat and a ball seat deformation mechanism, wherein the elastic sleeve is located in the upper joint and can selectively pass through or support the fracture ball through scaling, the inner sliding sleeve is located at the bottom of the elastic sleeve, the variable-diameter ball seat is located at the bottom of the inner sliding sleeve and supports or releases the fracture ball through elastic claws, and the ball seat deformation mechanism is connected with the variable-diameter ball seat and drives the variable-diameter ball seat to realize mutual transformation between an open-type ball seat and a closed-type ball seat. Through the arrangement of the elastic sleeve and the variable-diameter ball seat and the improvement of the surrounding components, a multi-level sliding sleeve can be opened by adoption of a low-density fracture ball with the same dimension in a full-pore mode, the fine reconstruction of the reservoir can be realized, and a barrier-free passage can be provided for later workover treatment.

The invention discloses an intelligent express item receiving door. The intelligent express item receiving door comprises a door body, a receiving box, a wireless camera, an electronic lock, a wireless controller and a receiving box door. The receiving box is installed on the rear face of the door body, the receiving box door is installed on an opening of the receiving box and located on the front face of the door body, the receiving box door is locked on the receiving box through the electronic lock in a free opening and closing mode, the wireless camera is installed in one corner of the upper end of the front face of the door body, and the wireless camera and the electronic lock are both in communication connection with the wireless controller. According to the intelligent express receiving door, a receiver can take an express item in time, and time and energy are prevented from being wasted.

An electromagnetic driven micro ornithopter comprises a body, a piston cylinder, an AC power supply, upper and lower electromagnetic coils, a permanent magnet, left and wing motion bars, left wing and right wing rotation shafts, left wing and right wing frameworks and left wing and right wing fins, wherein the piston cylinder and the AC power supply are internally arranged in the frame of the body; the upper and lower electromagnetic coils are arranged at the upper and lower ends of the piston cylinder respectively; the AC power supply is connected with the upper and lower electromagnetic coils; a permanent magnet sleeve is positioned in the middle part of the piston cylinder; the permanent magnet is internally arranged in the permanent magnet sleeve; one end of the left motion pole and one end of the right motion pole are fixed to the left side and the right side of the permanent magnet sleeve and the other end of the left motion pole and the other end of the right motion pole are fixedly to the left wing rotation shaft and the right wing rotation shaft; the left wing rotation shaft and the right wing rotation shaft are fixed to the ends of the left wing framework and the right wing framework; and the right ends of the left wing fins and the left ends of the right wing fins are fixed to the left wing framework and the right wing framework respectively. According to the invention, the upper and lower electromagnetic coils are used for providing magnetic force, so that the flapping power output is doubled. The defect that the magnetic force of a single coil may be influenced by the travel distance is made up and the power output becomes more stable.

The invention relates to the field of rice polishing equipment, in particular to a rice polishing device. The rice polishing device comprises an operation box, a driving part is arranged at the bottomof the operation box, an output shaft of the driving part is coaxially connected with a rotating shaft penetrating through the operation box, the operation box is internally provided with a partitionplate dividing the operation box into an operation box upper part and an operation box lower part, stirring blades are arranged on the part, on the upper part of the operation box, of the rotating shaft, the lower part of the operation box is fixedly connected with a screen mesh, a convex block is arranged at the bottom of the screen mesh, a pressing rod capable of pressing the convex block is arranged on the part, on the lower part of the operation box, of the rotating shaft, the partition plate is internally provided with a groove, the groove is internally provided with an electromagnet anda permanent magnet, a power supply controlling the electromagnet is arranged on the top wall of the operation box, and the rotating shaft is rotatably matched with the partition plate and the screenmesh. According to the scheme, the rice polishing device is used for rice polishing, produced fine grained rice bran powder can be adsorbed, and thus the effect of removing the rice bran powder in thepolishing process is better.

The invention discloses a catering robot, which comprises an omnidirectional four-wheel base plate and a transition connecting element, wherein the upper side of the omnidirectional four-wheel base plate is connected with a storage device through the transition connecting element; a control system is arranged on the omnidirectional four-wheel base plate; the control system can drive the omnidirectional four-wheel base plate to move. The running of the omnidirectional four-wheel base plate is controlled through the control system, so that the storage device can run on a passage; diners can conveniently put tableware after the dinning into the storage device; the diners do not need to walk to a tableware collecting position; the time of the diners is saved; the workload of workers is also reduced; meanwhile, the tableware can be timely treated; the comfort of the dining environment is reached. The catering robot has the advantages that the storage device is made into a main body framework; in addition, tableware separation frames are arranged on the main body framework, so that each layer of the tableware separation frame can be used for storing more tableware; the space can be saved; the cost can be reduced.

The invention provides an intelligent insulated cable piercing clip, which relates to an insulated cable piercing clip and aims at solving the problems that the insulated piercing clip is laboursome in tightening a gland and the clamping force is loose in the case of use. The intelligent insulated cable piercing clip comprises a first gland and a second gland which are arranged oppositely, a fastening bolt passing through the gland, and a left clamping groove and a right clamping groove which are located at two sides of the fastening bolt for clamping the cable, wherein each clamping groove iscomposed of two oppositely-arranged half clamping grooves located on the first gland and the second gland, each half clamping groove is internally provided with a piercing blade, a first left electromagnet and a first right electromagnet are arranged above the left clamping groove and the right clamping groove on the first gland, the two electromagnets are serially connected, and iron blocks or magnets corresponding to the electromagnets on the first gland are arranged on the second gland. After the piercing blade and the wire are contacted, the tightening force of the two glands is increasedautomatically, and the clamping force is kept constantly during the use process.

The invention discloses a refrigerator with an anti-condensation device and an anti-condensation control method, and relates to the technical field of refrigerators. The refrigerator comprises the anti-condensation device, wherein the anti-condensation device comprises a temperature sensor, a temperature and humidity sensor and a heating device; the temperature sensor is used for detecting the temperature on the surface of an overturning beam; the temperature and humidity sensor is used for detecting the ambient temperature and humidity; the heating device is used for heating; the temperaturesensor, the temperature and humidity sensor and the heating device are electrically connected to a control module; the control module converts the collected ambient temperature and humidity data intothe ambient dew point temperature; and when the temperature, collected by the temperature sensor, at the surface position of the overturning beam reaches a target temperature, the control module controls the heating device to start heating. By means of the anti-condensation device and the anti-condensation control method, the anti-condensation heating device can be controlled to be turned on and off more intelligently, the problem that the overturning beam of the refrigerator is prone to condensing is greatly relieved, and the energy consumption of the refrigerator is reduced.

The invention relates to an intelligent entrance guard control method and device. The method and the device are used for controlling entrance guard equipment. The method comprises the steps: detecting whether a wireless identification signal sent from a terminal to be identified is received or not; verifying the wireless identification signal when the wireless identification signal sent from the terminal to be identified is received; generating a starting signal when the wireless identification signal passes verification; sending the starting signal to the entrance guard equipment so as to control the entrance guard equipment to open. According to the method, during application, a user holds the terminal to be identified and can send the wireless identification signal to an entrance guard controller during moving, and thus, the entrance guard controller can control the entrance guard equipment to open according to the sent wireless identification signal, so that the problem of the traditional entrance guards in the prior art that entrance guards can only be verified in case of near-range contact can be solved.

The invention discloses a multi-angle checking and three-dimensional spraying disinfection and sterilization device for a port container environment, and relates to the technical field of disinfection and sterilization equipment. According to the technical scheme, the device is characterized by comprising a vehicle body, a control center, a liquid storage tank and a disinfection and sterilization nozzle, wherein the liquid storage tank is connected with the disinfection and sterilization nozzle through a liquid conveying pipe; a control valve and a flow meter are arranged on the liquid conveying pipe; the flow meter is in signal connection with the control center; the control valve is connected with and controlled by the control center; an image collector is arranged on the vehicle body and is connected with and controlled by the control center; and the control center comprises a data module and a processing module. According to the invention, the disinfection and sterilization site can be checked from multiple angles, the multi-angle disinfection and sterilization operation can be automatically carried out, the dosage of each disinfection and sterilization operation is automatically controlled and intelligently used, the disinfection and sterilization process is very safe and effective, and the disinfection and sterilization convenience and the disinfection and sterilization efficiency are improved.

The invention relates to biopsy forceps with a measuring piece. The forceps comprises a hard handle, a steel wire pipe, a forceps head, a first slide buckle, a second slide buckle and the measuring piece. The hard handle, the steel wire pipe and the forceps head are successively connected. The first slide buckle is slidably installed on the hard handle and is connected with the forceps head via a first steel wire. The second slide buckle is slidably installed on the hard handle. The second buckle which controls the measuring piece to extend out or retract to the steel wire pipe is connected with the measuring piece via a second steel wire. Projections are arranged on the inner surface of the second slide buckle. Grooves in the peripheral direction are arranged in the peripheral side face contacting the inner surface of the second slide buckle of the hard handle. The projections match the grooves which are uniformly arranged in the axial direction of the hand handle. According to the invention, size of a focus can be measured and the biopsy forceps belong to the field of medical devices of endoscopes.

The invention belongs to the field of medical equipment for the pneumology department and particularly relates to a device for measuring the diameter of a human airway. One end of a moving inner tubeglidingly extends into a first conveying outer tube from the tail end of the first conveying outer tube, and a cavity is formed between the inner wall of the first conveying outer tube and the outer wall of the moving inner tube; optical fiber is arranged in the cavity and connected with a display; one end of an annular bag part is communicated with the tail end of a second conveying outer tube, the other end of the annular bag part is communicated with the head end of the first conveying outer tube, and the side wall of the moving inner tube is connected with the inner wall of the annular bagpart through an expansion device; a deviator for controlling the direction of the conveying outer tube is also arranged on the side wall of the first conveying outer tube; scales are arranged on theside wall of the part, extending out of the conveying outer tube, of the moving inner tube. The device can control the direction freely and is simple to operate and high in accuracy, and the measurement problem of the diameter of the human airway at present is solved.

The invention discloses a dental instrument sterilizing device, which comprises a sterilizing chamber, wherein a liquid storage tank is arranged at the lower part of the sterilizing chamber, and the sterilizing chamber is separated from the liquid storage tank by a partition plate; the partition plate is provided with water passing holes, and the liquid storage tank is communicated with the sterilizing chamber through a liquid supply pipe, and a liquid supply pump is arranged on the liquid supply pipe; one end, connected with the inside of the sterilizing chamber, of the liquid supply pipe isconnected with a spraying head, and the top of the sterilizing chamber is provided with a top cover; the top cover is internally provided with an ultraviolet sterilizing lamp and a clamping mechanism,and the clamping mechanism is connected with a power mechanism. The dental instrument sterilizing device provided by the invention has the advantages that by arranging the spraying head, the impact force of a sterilizing liquid on a medical device is increased, and the sterilizing effect is improved; by cooperating with the ultraviolet sterilizing lamp, the bacteria on the surface of the dental instrument can be completely killed, thereby ensuring that the surgical procedure is safe and reliable.

The invention discloses a spraying robot control system capable of automatically controlling spraying thickness. The spraying robot control system comprises a mechanical main arm, a rotary base positioned at the bottom end of the mechanical main arm, a two-section mechanical arm positioned at the top of the mechanical main arm and a mechanical wrist movably connected to the front end of the two-section mechanical arm. A detection probe is fixedly arranged at the top end of the mechanical wrist, a conveying pipe is arranged at the front end of the mechanical wrist in a communicating manner, a duckbilled spray head is fixedly arranged at the front end of the conveying pipe, and coating spray holes communicating with the conveying pipe are formed in the front end of the duckbilled spray head.Through an arranged spray hole control structure, opening and closing of each spray hole can be controlled, coating is saved, and the spraying precision is improved. Through an arranged cleaning structure, a coating blowing nozzle can blow the dispersed part of coating sprayed out of the duckbilled spray head to a workpiece, dispersion of the coating is reduced, a dust removal spray head can blowaway powder dust on the surface of the workpiece, then the dust is wiped through a sponge wiper, and the coating can be better attached to the surface of the workpiece.

The invention relates to the technical field of water heaters, in particular to an air-source water heater. The air-source water heater comprises a compression circulating pipeline and a defrosting device; the compression circulating pipeline comprises a compressor, a condenser, a throttling valve and an evaporator which are connected sequentially; an outlet of the evaporator is connected with aninlet of the compressor; the defrosting device is arranged on one side of the evaporator; and compressed air for blowing the surface of the evaporator to provide heat and power which are required during defrosting of the surface of the evaporator is stored inside the defrosting device. The invention further provides a defrosting method of the air-source water heater. Production of hot water by theaid of the air-source water heater is not hindered while defrosting is performed, the defrosting time is short, the efficiency is high, and the energy utilization rate is high.

The invention discloses an anti-drop wire clamp, which relates to the field of power transmission lines. The anti-drop wire clam comprises a wire clamp main body, an opening and closing device and a locking device; a U-shaped groove is formed in the upper surface of the wire clamp main body; a first mounting groove is formed in the left side surface of the wire clamp main body; a second mounting groove is formed in the right side surface of the wire clamp main body; the opening and closing device is rotatably connected into a mounting groove formed in the wire clamp body; and the locking device is arranged in the mounting groove. The wire clamp can be clamped on a wire to be locked and prevented from falling off.

The invention discloses a TWS Bluetooth earphone capable of synchronously playing audio, and the earphone comprises a TWS Bluetooth earphone storage box, fluorescent strips are pasted on the upper andlower parts of the outer wall of the TWS Bluetooth earphone storage box, an electronic watch is fixedly installed at the central position of the front wall of the TWS Bluetooth earphone storage box,and a rotating disc is movably installed in the bottom of the TWS Bluetooth earphone storage box. A threaded rod is fixedly installed in the center of the top of the rotary disc, fluorescent strips are bonded to the upper portion and the lower portion of the outer wall of the TWS Bluetooth earphone storage box, a TWS Bluetooth earphone can be found in time under the condition of dark light, an electronic watch is installed in the middle of the front wall of the TWS Bluetooth earphone storage box, and the current time can be better known. The rotating disc is installed in the bottom of the TWSBluetooth earphone storage box through a bearing, the rotating disc can rotate conveniently under the action of the bearing, a screw is fixedly installed in the center of the top of the rotating disc,and the rotating disc can drive the screw to rotate conveniently.

The invention relates to a quantitative liquid injection device for dosing of chemical engineering liquid raw materials. The quantitative liquid injection device is composed of a liquid injection barrel, a connecting block, a liquid injection head and a piston rod. A liquid injection hole is formed in the inner side of the lower end of the liquid injection barrel, a rubber plug is arranged at the lower end of the piston rod and connected with the upper end of the liquid injection hole, and the piston rod moves up and down to be in linkage with the rubber plug to enable the rubber plug to be connected with the upper end of the liquid injection hole in contact and sealing mode or separated from the upper end of the liquid injection hole. The upper end of the piston rod is provided with a connecting handle, the connecting block is provided with connecting block threads connected with the liquid injection barrel, the connecting block threads are connected with the threads at the upper end of the liquid injection barrel, the middle of the connecting block is provided with a piston rod connecting hole, and the piston rod is connected with the piston rod connecting hole through a spring. A liquid injection pipe is arranged on one side of the liquid injection barrel which is communicated with the inner cavity of the liquid injection barrel. The quantitative liquid injection device can be connected with an automatic control device conveniently and can control liquid injection precision precisely.

The invention relates to a hog house gas detection alarm system and a method thereof. The system comprises a wall body, a top cover, lighting and ventilating windows, a colony house and supporting beams. Monitors are fixed at four corners of the wall body; the monitors are connected with a master control system module; the master control system module comprises a monitoring module used for monitoring behaviors and sounds of pigs, a behavior analysis module and a sound processing module which acquire the pig cough condition in the pig house, an image processing module which analyzes abnormal behaviors of the pigs, a gas detection module which detects the gas concentration of the colony house, an alarm module which controls a NH3 alarm lamp and a CO2 alarm lamp, an atomization module which sprays atomized water vapor to absorb toxic gas and cool the pig house at the same time, a telescopic module which controls a first electric telescopic rod to ascend and descend the pig house for ventilation and controls a second electric telescopic rod to ascend and descend the gas monitor so that the gas generation position can be accurately determined, and a fan module which controls an exhaustfan to be turned on and the power of the exhaust fan to realize effective ventilation and energy conservation.

The invention discloses a deferred water faucet. The water faucet comprises a faucet body, a water yielding pipe and a control handle are arranged on the faucet body, a copper bucket is arranged inside the faucet body, a bucket cover is arranged correspondingly on a lower opening of the copper bucket, a water dredging hole communicating an inner cavity of the faucet body with the inner cavity of the copper bucket is arranged on the bucket cover, a floating body is arranged inside the copper bucket, a dredging trough is arranged on the inner side of the copper bucket, a first sealing ring which can block the water dredging hole is installed on the lower part of the floating body, a spring is arranged between the floating body and the copper bucket, a press cover is arranged on the upper part of the faucet body, a ceramic core is installed on the press cover, a torsion spring is arranged between a rotating telescopic part and a fixing part of the ceramic core, the upper end of the rotating telescopic part is connected with the control handle, and the lower end of the rotating telescopic part is contacted with the copper bucket. This type of deferred water faucet drives the expansion of the ceramic core through the control handle, and further controls the opening and closing movements of the floating body on the water dredging hole; people need a little strength to control the opening of the deferred water faucet, and the deferred water faucet is more convenient to use.

The invention provides a self-clamping insulated cable puncture clamp, relates to an insulated cable puncture clamp and aims at solving the problems that an insulated puncture clamp is strenuous in gland tightening and loose in clamping force in use in the prior art. The self-clamping insulated cable puncture clamp comprises oppositely arranged first gland and second gland, a fastening bolt, a left clamping groove and a right clamping groove, wherein the fastening bolt passes through the glands; the left clamping groove and the right clamping groove are located in two sides of the fastening bolt and are used for clamping cables; each clamping groove is formed by oppositely arranged two half clamping grooves located in the first gland and the second gland; puncture blades are arranged in each half clamping groove; a first left electromagnet and a first right electromagnet are arranged at the upper parts of the left clamping groove and the right clamping groove in the first gland separately and are connected in series; and the second gland is provided with iron blocks or magnets corresponding to the electromagnets on the first gland. According to the self-clamping insulated cable puncture clamp, the clamping force of the two glands is automatically increased after the puncture blades are in contact with wires, and the clamping force is always kept in use.

The invention discloses a clamped chain saw which structurally comprises a case. A handle is arranged on the rear side of the case. The clamped chain saw is characterized in that a power mechanism isarranged in the case, a chain saw body is arranged in the middle of the power mechanism, a rotating device is arranged on a transmission mechanism and can drive the chain saw body to rotate under power provided by the power mechanism, control devices are arranged on the left side and the right side of the plain of the front side of the case, transmission shafts are connected in the control devices, the upper ends of the transmission shafts are connected with a connecting rod mechanism, and clamping devices are arranged on the lower portions of the control devices and connected with the controldevices through the transmission shafts. The clamped chain saw has the advantages that the chain saw can be clamped at a tree cutting portion and is stably fixed onto one side of a tree when the weight of the clamped chain saw can be supported, manual control of stability of the chain saw is omitted, the rotating device can control the chain saw to rotate by taking a driving gear as an original point, horizontal cutting is completed, and the workload of an operator is reduced.

The invention provides a public dinning kitchen ware storage device and a control method thereof, and relates to the technical field of dinning kitchen ware. The public dinning kitchen ware storage device comprises a movable door and a main body internally provided with a containing cavity. The main body is provided with a driving assembly, and the driving assembly is used for driving the movabledoor so that the movable door can open or close the opening of the containing cavity; a detection module is arranged in the containing cavity and is used for detecting whether kitchen ware is stored in the containing cavity or not; the detection module is electrically connected with the driving assembly, and after the driving assembly receives the signal that the kitchen ware exists in the containing cavity, the driving assembly controls the movable door to execute the closing action. Thus, after the public dinning kitchen ware is used up and put back into the containing cavity, the storage device can automatically close the movable door, the dinning kitchen ware is located in a closed environment, and the probability that the public dinning kitchen ware is polluted is effectively reduced.

The invention relates to clearing equipment, in particular to a sundry clearing clamp, which comprises a driving mechanism, a telescopic mechanism, a sleeve, a connecting rod mechanism and an action clamp, wherein the action clamp is formed by welding a rod and a clamp; the driving mechanism is fixedly arranged on the sleeve, and is hinged with the telescopic mechanism; the sleeve is sleeved on the telescopic mechanism; the extending end of the telescopic mechanism is hinged with the connecting rod mechanism; and the action clamp is hinged on the connecting rod mechanism. Due to the adoption of the sundry clearing clamp, the opening and closing of the clearing clamp are easy to control through the movement of the connecting rod mechanism, deposits in a pipeline can be clamped conveniently, easiness and rapidness are realized, and possibly-produced toxic gases such as marsh gas and the like are prevented from hurting operation personnel; and simultaneously, the sundry clearing clamp is accordant with the design of the human engineering, and operation personnel can operate easily and conveniently with an installed handle.

The invention discloses a constant-flow automatic water replenishment control system based on signal peak-cutting processing, which is characterized in that it mainly consists of a single-chip microcomputer, a solenoid valve and a peak-cutting circuit connected to the single-chip microcomputer, and a V / It consists of an F conversion module and a water level sensor connected to the V / F conversion module. The V / F conversion module in the present invention can limit and filter the waveform of the detection signal while converting the detection signal, so as to improve the stability of the detection signal, so that the single-chip microcomputer can better identify the detection signal, Compared with the comparison, it is better to control the opening and closing of the solenoid valve, so that the water volume of the feeding pool can be more accurately controlled to meet the drinking water needs of poultry.

The invention relates to the field of textile fabrics, in particular to a wall cloth fabric with a function of displaying different patterns. The wall cloth fabric is provided with the diversified patterns and LED lamps. The problems of single patterns and deficiency of light reflection functions of existing wall cloth fabrics can be effectively solved by the aid of the wall cloth fabric. The wallcloth fabric structurally comprises a wall cloth fabric body. A plurality of pentagram-shaped protrusions are vertically arranged on the outer surface of the right side of the wall cloth fabric body,the pentagram-shaped LED lamps are arranged on the outer surfaces of the pentagram-shaped protrusions and are serially connected with one another by a connecting circuit to be electrically connectedwith an external three-way control switch, the three-way control switch is electrically connected with a power line, a plurality of rhombus-shaped protrusions are vertically arranged on the outer surface of the wall cloth fabric body and are positioned on the left sides of the pentagram-shaped protrusions, and the rhombus-shaped LED lamps are arranged on the outer surfaces of the rhombus-shaped protrusions and are serially connected with one another by a second connecting circuit to be electrically connected with the external three-way control switch. The wall cloth fabric has the advantages of simple structure, convenience in use and applicability to diversified places.

The invention discloses a spraying device capable of recovering pesticide. The spraying device comprises a pesticide storage tank, a pesticide spraying channel, a recovery loop, a safety loop, a sprayrod and multiple collecting discs, wherein an inlet of the pesticide spraying channel is communicated with the pesticide storage tank, and an outlet of the pesticide spraying channel is communicatedwith one end of the spray rod; an inlet of the recovery loop is communicated with the collecting discs, and an outlet of the recovery loop is communicated with the pesticide storage tank; an inlet ofthe safety loop is communicated with the pesticide storage tank, and an outlet of the safety loop is communicated with the outlet of the pesticide spraying channel; multiple nozzles are uniformly arranged at the other end of the spray rod and used for spraying pesticide; the multiple collecting discs are arranged below the nozzles in the axial direction and used for recovering the pesticide. The spraying device capable of recovering the pesticide is capable of recovering large drops of pesticide flowing down from the centers of the sprinkler nozzles and uniformly spraying the pesticide and high in use ratio. The invention further discloses a control method of the spraying device capable of recovering the pesticide. According to the plant area to be sprayed and the distance from the nozzlesto the ground, the rotating speed of a first pressure pump can be controlled to spray the pesticide, the pesticide can be fully and uniformly sprayed to plants, the spray efficiency is high, and thepesticide use ratio is large.

The invention discloses an electric cooker. The electric cooker comprises a pot body, a pot cover, a cover opening mechanism and a foam detector. The pot cover is used for covering the pot body, so that the pot cover and the pot body define a cooking cavity. The cover opening mechanism is mounted on the pot body and is connected with the pot cover so as to open or close the pot cover. The foam detector is used for detecting foam in the cooking cavity, the cover opening mechanism is connected with the foam detector, and accordingly the pot cover can be opened when the foam is detected by the foam detector. According to the electric cooker, the foam in the cooking cavity is greatly reduced, so that foam overflowing is reduced, and thus the sanitation and the cleanliness of the electric cooker cannot be affected; moreover, electrical elements of the electric cooker cannot be damaged easily, and therefore the reliability and the safety of the electric cooker are high; in addition, due to the arrangement of the foam detector, whether foam is generated in the cooking cavity or not can be monitored in real time, the pot cover can be controlled to be opened and closed in real time, and control is accurate.