10results about How to "Prevent misfire" patented technology

The utility model discloses an efficient energy-saving bell-type furnace burner which comprises a fixed machine shell, a front sealing cover is installed on the surface of the front end of the fixed machine shell, a detachable structure is arranged between the fixed machine shell and the front sealing cover, a flame stabilizing disc is installed in the front sealing cover, and a gas inlet is formed in the front sealing cover. A burner head is detachably mounted at the center of the surface of the flame stabilizing disc, and multiple stages of rotational flow blades are mounted in the air inlet pipeline. The components of the furnace burner are conveniently assembled and designed, so that the burner head is positioned inside the sealing front cover, a good windproof protection effect is achieved, meanwhile, a multi-stage rotational flow structure is designed, air and fuel gas respectively generate strong rotational motion through the multi-stage rotational flow blades after entering the burner, and the burner head is prevented from being blocked by the multi-stage rotational flow blades. Air and fuel gas can be mixed more sufficiently, the combustion efficiency is improved, the flame stabilizing disc is arranged in the combustor, combustion of flames can be stabilized, flame blow-off or backfire is prevented, and stability and safety in the combustion process are ensured.

The invention relates to a high-reliability ignition control system based on a dual-detection dual-drive mechanism, and belongs to the technical field of hardware circuit design. The test system receives a data stream signal sent by the PC monitoring system through a serial port cable and then sends a response data transmission signal to the high-reliability ignition control system through a communication cable; the high-reliability ignition control system carries out power supply identification signal detection and state identification signal detection, if the high-reliability ignition control system supplies power to a battery and is in a release state, an ignition control process is started, and an ignition voltage signal is fed back to the test system through a communication cable; otherwise, ignition control is not carried out; the test system processes the ignition voltage signal to obtain an ignition voltage value, and inputs the ignition voltage value to the PC monitoring system for display; and the ignition control adopts a double-switch control mode of an electromagnetic relay and a solid relay to realize short circuit and disconnection of an ignition circuit so as to ensure accurate control and high reliability of ignition. The device has the advantages of high safety, high reliability, multi-path ignition control, mistaken ignition prevention and the like.

This invention provides a combustion device, its ignition control method, and a readable storage medium. The ignition control method includes: acquiring a fan power-speed curve and the actual fan speed under constant airflow conditions, and obtaining a target fan power based on the curve and the actual fan speed; acquiring the actual fan power and actual temperature, and obtaining a fan compensation power based on the actual fan power and actual temperature; comparing the target fan power and the compensation power, and adjusting the fan speed when there is a deviation between the target power and the compensation power; and performing an ignition operation when the deviation between the target power and the compensation power is within a predetermined range. This method can improve the ignition success rate.

The invention discloses a pyrotechnic bomb spreading device for unmanned aerial vehicles, comprising a pyrotechnic bomb hanging rack, a magazine, a front fairing, a rear fairing, a card slot assembly, an execution controller and a host controller. The invention adopts high-strength aluminum alloy processing, has high strength and light weight; at the same time, the magazine is divided into a design, each magazine is loaded with 50 pyrotechnic bombs, has a large spreading density and three-dimensional spreading, and a card slot is provided on the pyrotechnic bomb hanging rack to connect the magazine, so that the installation is convenient and quick; the control panel of the equipment adopts a precise automatic temperature control design, is suitable for working in harsh environments, has high reliability and good stability; has a non-volatile storage function, and the onboard Flash records each operation log in real time, thereby ensuring the continuity of the operation; the detection circuit and the ignition circuit are designed with optical coupling isolation shunts, thereby eliminating the possibility of misfiring and ensuring the safety of the operation.

This invention provides a safe automatic injection pen, including a pen body sleeve, an actuator, an activation sleeve, and a push rod. A button is located at the distal end of the pen body sleeve, and a needle cover is located at the proximal end. The actuator is disposed within the pen body sleeve, with one end connected to the button and the other end having a protrusion. The activation sleeve is fitted over the actuator, and the push rod is disposed inside the actuator, with an annular groove on its outer wall engaging with the protrusion of the actuator. When the needle cover presses against the injection site, the activation sleeve moves a first displacement H1 relative to the actuator in a direction away from the needle. When the button is pressed, the actuator moves a second displacement H2 relative to the activation sleeve in the direction of the needle. When both the first displacement H1 and the second displacement H2 occur, the protrusion separates from the annular groove to release the plunger spring, allowing the push rod to drive the rubber stopper to move towards the needle to complete the injection. This effectively reduces the risk of accidental injection due to accidental button press, accidental impact, or unintended user operation.

The utility model provides a burner for a stove, and belongs to the technical field of gas stoves. The burner comprises a small fire hole channel used for fire outlet, the small fire hole channel is designed to comprise a first small fire hole channel body serving as an air inlet section and a second small fire hole channel body serving as an air outlet section, and the sectional area of the first small fire hole channel body is designed to be smaller than that of the second small fire hole channel body; in this way, the problem of fire blow-off during fire outlet of the soft fire hole channel can be prevented.

The present invention relates to a fire grate, a burner and a water heater for realizing rich and thin combustion, comprising a core shell, an inner shell and an outer shell. The core shell comprises an ejection channel, a flow equalization chamber and a flow diversion chamber. A rich combustion outlet structure and a thin combustion outlet structure are arranged on the side wall of the flow diversion chamber. The inner shell comprises a thin combustion mixing chamber and an air intake chamber. An air guide structure is arranged on the side wall of the inner shell, which is in contact and conduction with the rich combustion outlet structure in a one-to-one correspondence. An air intake gap is formed outside the air intake chamber and the side wall of the flow diversion chamber. The air intake gap is in conduction with the thin combustion outlet structure and is in conduction with the thin combustion mixing chamber upward. A thin combustion hole is arranged on the top surface of the thin combustion mixing chamber. The outer shell comprises a rich combustion outlet chamber and an air guide chamber. An air guide gap is formed between the air guide chamber and the side wall of the air intake chamber. A rich combustion outlet gap is formed between the rich combustion outlet chamber and the side wall of the thin combustion mixing chamber. The air guide structure is in conduction with the rich combustion outlet gap, and a rich combustion hole is formed on the top of the rich combustion outlet gap.

The application relates to a gas stove and a burner thereof. The burner comprises an ejector pipe group and a damper end plate. The ejector pipe group has an air inlet end and an air outlet end, and a booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end; the damper end plate is arranged at the air inlet end of the ejector pipe group, and a primary air inlet hole and a gas hole are arranged in the damper end plate. External air can be sucked into the ejector pipe group through the booster hole and the primary air inlet hole at the same time, the booster hole is used for increasing the air intake amount, facilitating further promotion of combustion, improving the combustion efficiency and reducing the CO emission amount. The booster hole is arranged in the side wall of the ejector pipe group close to the air inlet end, and the primary air inlet hole is arranged on the damper end plate, that is, the air flow direction of the air entering from the booster hole is different from the air flow direction of the air entering from the primary air inlet hole. Therefore, when the two air flows flow into the ejector pipe group at the same time, the two air flows collide and mix, the air and the gas are fully mixed, the combustion efficiency is improved, and the CO emission amount is reduced.

The utility model relates to a finned tube with narrow-gap channels, which can be used for a combustion head for gas premixing combustion and can also be used for backfire prevention of a flame arrester. The heat exchanger comprises a fin and a base tube, the base tube is a round tube, the fin is spirally and evenly wound on the outer wall of the base tube through a flat steel belt, the fin comprises a fin root and a fin tip, the fin root and the outer wall of the base tube are welded through laser, the upper side and the lower side of the fin tip are original arcs, and the fin root and the fin tip are arc-shaped. The fin is structurally characterized in that the left side and the right side of the fin tip are pressed and formed into new arcs through a die, the new arcs are connected with original arcs through straight sections, narrow gap channels are formed between the adjacent fins and the outer wall of the base tube after pressing and forming, and the sections of the fins before pressing and forming are of an annular structure. After compression molding, overlapped parts exist between the adjacent fins, all fin tips incline towards the same direction, and the circle center of the new arc coincides with the circle center of the original arc.

The present invention provides a dual-pulse solid rocket engine dynamic closed-loop ignition control method and device, which uses a pressure sensor to measure the working pressure of the first-stage engine, and the output signal is monitored by the multi-channel AD on the chip of the DSP after passing through different operational amplifier circuits; when the collected signal drops to a set threshold, the timing starts, and after the set time is reached, the DSP outputs a signal to start the secondary ignition circuit. The present invention has high control accuracy, short delay time, stable operation, simple operation, and can accurately complete the ignition control instruction. Through modular combination, it can also realize dynamic closed-loop ignition control of multi-stage solid rocket engines.