4results about How to "Reduce heating area" patented technology

The utility model discloses a kind of flat bottom dual-fuel injector structure and dual-fuel engine, including the injector body, middle body and needle valve body sequentially connected from top to bottom, the inside of the needle valve body is provided with first fuel needle valve, the inside of the first fuel needle valve is provided with second fuel needle valve, the bottom surface of the first fuel needle valve and the bottom surface of the needle valve body are located on the same plane, a plurality of first fuel injection holes are provided on the needle valve body, the bottom of the first fuel needle valve is provided with a plurality of second fuel injection holes, the injection cone angle of the second fuel injection hole is less than set angle;The bottom of the dual-fuel injector of the utility model is plane structure, so that the heated area of fuel injector exposed in combustion chamber is reduced, the temperature of fuel injection hole can be effectively reduced, so as to reduce the risk of coking.

This application provides an arc-extinguishing system and a circuit breaker, belonging to the field of electrical equipment technology. The arc-extinguishing system provided in this application includes a stationary contact, an arc-extinguishing chamber, and a stationary cover. The stationary contact includes a fixed part and a contact part connected to each other. The fixed part is connected to the base of the circuit breaker, and the contact part has a guide groove that extends through the contact part. The arc-extinguishing chamber is disposed on the contact part. The stationary cover is disposed on the portion of the contact part that does not contact the arc-extinguishing chamber. A hook and a limiting block are provided on the side of the stationary cover facing the contact part. The hook passes through the guide groove and hooks to the side of the contact part facing away from the stationary cover. The limiting block is located within the guide groove and contacts the groove wall. The stationary cover mentioned in this application can limit the position of the stationary cover in the thickness, length, and width directions of the stationary contact, reducing the probability of changes in the relative position between the stationary cover and the stationary contact. This improves the shielding efficiency of the stationary cover on the contact part, thereby increasing the reliability of the arc-extinguishing system.

The utility model discloses a tea leaf fixation hot-blast stove which comprises a box body and a hot air chamber arranged in the box body, one end of the hot air chamber is provided with a hot air outlet, a combustion chamber is arranged in the hot air chamber, the combustion chamber is connected with a group of heat exchange box bodies in series, and the tail ends of the heat exchange box bodies are connected with a smoke exhaust device. An air inlet chamber is arranged at one end of the hot air chamber in the box body, a group of heat exchange pipes communicated with the air inlet chamber are arranged in the heat exchange box body, and air in the air inlet chamber sequentially enters the heat exchange pipes of the heat exchange box body for heat exchange, then enters the hot air chamber and is discharged from the hot air outlet. Heat generated by fuel combustion can be fully utilized, heat dissipation loss and smoke exhaust heat loss are effectively reduced, the heat conversion rate is remarkably improved, and the hot blast stove can be widely applied to the field of tea leaf fixation hot blast stoves.

The application discloses an infrared microscopic imaging heating device, which comprises a base, a column heating platform standing on the base, at least one side of the column heating platform being provided with a heating sheet, the column heating platform being provided with a heating plate matched with the heating sheet, the column heating platform being provided with a boss-shaped heating platform, the heating platform being fixed to the upper end of the heating platform and the heating plate, and the upper surface of the heating platform being used for placing a chip to be heated. The application provides a new heating device for the field of infrared microscopic detection, so that an infrared camera can not be affected by the heating platform, and the heating demand in the field of infrared microscopic detection is met.