13results about How to "Reduce input power" patented technology

The present invention relates to the technical field of piezoelectric pumps, and in particular to a piezoelectric fluid pump, comprising a fluid excitation unit and at least one opposing plate; the fluid excitation unit comprises a piezoelectric sheet, a substrate, a spacer and a diaphragm, and the piezoelectric sheet and the substrate constitute an actuator; a pump chamber is formed between the opposing plate and the diaphragm; at least two holes connected to the pump chamber are penetrated in the area of ​​the opposing plate opposite to the diaphragm, and the holes are inlets or outlets, wherein at least one hole is an inlet, and another at least one hole is an outlet, and at least one hole is provided with a one-way valve; the piezoelectric fluid pump of the present invention uses a diaphragm as an excitation source for exciting the fluid in the pump chamber to produce pressure changes, and the diaphragm is fixedly connected to the actuator through the spacer. Under this structure, the extremely small vibration displacement of the actuator can cause the diaphragm to produce several times or even dozens of times the vibration displacement of the actuator, thereby greatly improving the volume change of the pump chamber during operation, thereby greatly improving the output flow rate.

The utility model discloses a pneumatic extinguisher impeller with novel three-dimensional structure blades, relates to the technical field of pneumatic extinguishers, and solves the problems that the original impeller blade configuration and volute structure cause certain loss of internal gas flow, the gas flow rate at an outlet is influenced, and the gas flow rate is influenced. The backpack type pneumatic extinguisher comprises an impeller body, arc-shaped blades are arranged in the impeller body, through holes are formed in the positions, between the blades, of the impeller body, the size parameters of the blades of the impeller are improved, and the size parameters comprise the size on the horizontal plane and the size perpendicular to the plane of the impeller; the geometric configuration of the impeller blade is improved, and the geometric parameters of the impeller blade and the volute are integrally optimized; the energy loss caused by gas flowing in the pneumatic extinguisher is improved, and the working efficiency of the impeller of the pneumatic extinguisher is improved.

The invention provides a multi-wavelength full-function therapeutic machine which comprises a 980 nanometer laser, a 1940 nanometer laser, a 532 nanometer laser, a 980 nanometer laser coupler, a 1940 nanometer laser coupler, a 532 nanometer laser coupler, a 980 nanometer laser optical fiber, a 1940 nanometer laser optical fiber and a 532 nanometer laser optical fiber. The 980-nanometer laser is connected with the 980-nanometer laser coupler, the 1940-nanometer laser coupler and the 532-nanometer laser coupler through 980-nanometer laser optical fibers, the 1940-nanometer laser is connected with the 980-nanometer laser coupler, the 1940-nanometer laser coupler and the 532-nanometer laser coupler through 1940-nanometer laser optical fibers, and the 532-nanometer laser is connected with the 980-nanometer laser coupler, the 1940-nanometer laser coupler and the 532-nanometer laser coupler through 532-nanometer laser optical fibers. The power is lower, more electricity is saved, the size is smaller, and the weight is lighter.

The invention discloses a two-way direct-drive ultrahigh-pressure positive displacement pump with a built-in rolling screw pair and a control method of the two-way direct-drive ultrahigh-pressure positive displacement pump, relates to the technical field of fluid machinery and ultrahigh pressure generation, and solves the problems of complex system, low efficiency, large output pulsation and inflexible control in the prior art. The servo direct-drive actuator comprises a servo direct-drive actuator unit and two sets of high-pressure cylinder assemblies, the servo direct-drive actuator unit comprises a servo motor stator, a servo motor rotor, a rolling screw pair and a pump body shell, the servo motor stator is fixed to the inner wall of the pump body shell, a nut of the rolling screw pair is coaxially embedded into the servo motor rotor, and the servo motor rotor is fixed to the inner wall of the pump body shell. The lead screw penetrates through the nut and is in rotary motion connection with the nut. Plungers are arranged in the high-pressure cylinder assemblies, and the two ends of the lead screw are rigidly connected with the plungers of the two high-pressure cylinder assemblies correspondingly. The structure of a traditional ultrahigh-pressure displacement pump is effectively simplified, mechanical friction loss is reduced, the overall structure is compact, response is rapid, and environmental protection and energy saving are achieved.

The invention relates to the field of water conservancy system optimization, in particular to a pump station system operation regulation and control method, system, equipment and medium based on a full overflowing system, and the method comprises the following steps: step 1, establishing a three-dimensional geometric model of the full overflowing system of a pump station; step 2, carrying out grid division; step 3, carrying out numerical simulation by adopting a # imgabs0 # turbulence model; under the condition that the total water diversion amount of the pump station is determined, obtaining an optimal flow distribution scheme when different unit combinations operate; and 4, obtaining an optimal start-up combination scheme by comparing the optimal start-up scheme of the pump station system with the optimal flow distribution scheme during combined operation of different units, and obtaining an optimal start-up combination scheme by comparing the optimal start-up combination scheme with the optimal flow distribution scheme. The method aims at reducing the operation cost of the pump station and improving the operation efficiency of the pump station, the internal flow characteristics of the water pump are analyzed through a numerical simulation method, the optimal starting-up combination scheme is obtained, and the flow distribution of the pump station is optimized on the premise that the total water diversion amount of the pump station is fixed based on the external characteristic curve of the water pump.

This invention relates to the field of marine floodlight technology and discloses a marine LED floodlight, including a lamp post, a rotating rod fixed to the top of the lamp post, a connecting rod fixed to the side of the rotating rod, a rack fixed to the end of the connecting rod away from the rotating rod, a limit block fixed to the side of the rotating rod, an illumination assembly including a luminaire on the rotating rod, a protective assembly for protecting the luminaire on the top of the rotating rod, and a pushing assembly on the lamp post for moving the luminaire. The pushing assembly consists of a pushing structure and a connecting structure. This invention significantly delays the light decay of the LED luminaire through protective and sealing structures, enabling it to maintain high light transmittance and low light loss for a long time in the highly corrosive marine environment, thereby reducing the input power required to maintain illuminance and achieving energy-saving operation.

The invention relates to the technical field of heat pump heat supply, in particular to an energy-saving carbon dioxide air source heat pump system for efficient heat supply, which is characterized in that a carbon dioxide air source heat pump unit is a system heat source; the heat supply pipeline is connected with the heat pump unit and a user heat utilization place; the water return pipeline is connected with a user heat utilization position and the large-temperature-difference heat exchanger and then connected to the water inlet side of the heat pump unit, and a main circulation loop is formed. The large-temperature-difference heat exchanger is arranged in the water return pipeline and used for recovering waste heat from the main circulation loop and transmitting the recovered heat to bypass water flow to form high-temperature waste heat recovery water flow. The temperature adjusting device is arranged on the heat supply pipeline and used for receiving the primary hot water and the high-temperature waste heat recovery water flow and conducting mixing or heat exchange on the two water flows based on the heat using requirement of a user. The intelligent control module collects system operation parameters, and the heat consumption requirements of users are matched through a dynamic optimization control algorithm. Therefore, the overall heating performance coefficient of the hot water system is remarkably improved, and the purposes of energy conservation and emission reduction are effectively achieved.

The invention discloses a single-stage booster fan, a multi-stage booster fan and a multi-channel booster fan, and relates to the technical field of automobile ventilation equipment, and the single-stage booster fan, the multi-stage booster fan and the multi-channel booster fan comprise a fan shell which is of a closed shell-shaped structure as a whole, an air inlet is formed in one end of the fan shell, and an air outlet is formed in the other end of the fan shell; the rotor part is rotationally installed in the fan shell, the rotor part is provided with a plurality of first axial flow fan blades which are arranged in a radial shape, and all the first axial flow fan blades synchronously rotate along with the rotor part and surround the peripheral side of the rotating axis of the rotor part; the rotor part is matched with a driving mechanism for driving the rotor part to rotate; the stator part is fixedly installed in the fan shell and coaxially arranged on the air outlet side of the rotor part, the stator part is provided with a plurality of second axial flow fan blades arranged in a radial mode, the second axial flow fan blades surround the peripheral side of the axis of the stator part, and the spiral direction of the second axial flow fan blades is opposite to the rotating direction of the first axial flow fan blades; in a limited space, the pressurization ventilation effect in a vehicle is improved.

This application provides a light-emitting diode (LED) and a light-emitting device. A first electrode is formed on one side of the first semiconductor layer of the LED. The first electrode has multiple body portions distributed on opposite sides of the LED and multiple extension portions electrically connected to the body portions. The multiple extension portions include main extension portions and secondary extension portions distributed in a first direction and a second direction. This design increases the number of body portions of the first electrode and adaptively increases the number and distribution of the extension portions, thus shortening the current conduction distance, improving current spreadability, and making the current distribution of the LED more uniform. Simultaneously, the increased number of body portions correspondingly increases the number of leads between the LED and external circuits, thereby reducing the equivalent resistance of the LED and ultimately lowering the voltage of the LED package, reducing input power, and thus improving the photoelectric conversion efficiency of the LED.

A protection method for a radio frequency system, a wireless communication device, and a power amplifier is provided. The radio frequency system includes: a radio frequency path for transmitting a radio frequency signal in a first frequency band; a power amplifier located on the radio frequency path for performing power amplification processing on the radio frequency signal; and a control module for controlling the input power of the power amplifier so that the input power of the power amplifier is less than the maximum allowable input power of the power amplifier. In an embodiment of the present application, the input power of the power amplifier is controlled to be lower than the maximum allowable input power of the power amplifier, so as to protect the PA from burning out and improve the reliability of the PA to a certain extent.

The invention discloses an energy conversion device and application thereof, and relates to the technical field of energy conversion. The energy conversion device comprises a shell, a power input structure, a transmission structure, a planetary plate and an execution structure. The execution structure comprises an input assembly and an output assembly. The transmission structure, the input assembly and the planetary plate are all arranged in the shell, the power input structure is in transmission connection with the transmission structure, the transmission structure is in transmission connection with the input assembly, the input assembly is rotationally connected with the planetary plate, the output assembly is arranged on the shell, the planetary plate is rotationally connected with the power output end of the power input structure, and the planetary plate is connected with the output shaft; when the power input structure drives the input assembly to rotate through the transmission structure, energy is generated after the input assembly and the output assembly act, and acting force generated when the input assembly and the output assembly interact can drive the planetary plate to rotate. According to the energy conversion device and the application thereof, the efficiency can be improved.

The invention relates to the technical field of heat management of proton exchange membrane fuel cells, and discloses a comprehensive utilization method for waste heat of a proton exchange membrane fuel cell and heating of an air conditioner. The method comprises the following steps: 1, constructing a thermal management model: constructing a dynamic model of fuel cell output voltage, a circulating water pump, a radiator and an electric valve; and 2, constructing a thermal load model: determining the heating demand of the air conditioning system based on the indoor and outdoor temperature difference and the thermal load model. And 3, energy optimization and verification: introducing waste heat generated in the working process of the fuel cell into a thermal load model, determining the rotating speed of an air conditioner compressor according to the net heating capacity, establishing a heating power consumption model, and verifying the heating power consumption model on an experimental platform. Through cooperative control of fuel cell waste heat recovery and an air conditioning system, stable adjustment of the stack temperature and improvement of the air conditioning heat pump efficiency are realized, the steady-state temperature error of the stack is extremely small, and the system performance coefficient is improved to more than two times of the original working condition.

The present invention provides a variable frequency series resonant withstand voltage detection device and detection method, the detection device includes an integrated control box, an excitation transformer, a reactor group, a voltage divider and a compensation capacitor group, the output end of the integrated control box is electrically connected to the low voltage side of the excitation transformer, the high voltage side of the excitation transformer is electrically connected to the reactor group, the voltage divider and the compensation capacitor group in sequence, the compensation capacitor group is electrically connected to the device to be detected, the integrated control box is directly electrically connected to the voltage divider, the integrated control box is electrically connected to the low voltage side of the excitation transformer through a shunt resistor, the integrated control box is used to collect the sampled voltage at the voltage divider and the sampled current on the low voltage side of the excitation transformer, the integrated control box is also used to combine the sampled voltage and the sampled current to predict the resonant frequency interval where the resonance point is located, and the integrated control box is also used to output variable frequency alternating current to the low voltage side of the excitation transformer according to the resonant frequency interval. The present invention has the effect of improving the accuracy of the withstand voltage test results.