8results about How to "Reduce the temperature difference between upper and lower" patented technology

The utility model discloses a crucible supporting platform structure for gemstone growth, a supporting platform assembly is used for supporting a crucible, the supporting platform assembly comprises an inserting rod and a supporting disc, one end of the inserting rod is connected with a reflecting screen in an inserting manner, and the other end of the inserting rod is connected to the geometric center position of the supporting disc; a plurality of hollow holes are formed in the supporting disc; according to the utility model, the plurality of hollow holes at intervals are formed in the supporting disc of the supporting table assembly and are uniformly distributed in the supporting disc in an array form, so that the contact area between the bottom of the crucible and the supporting disc can be reduced, the heat loss of the bottom of the crucible is reduced, the temperature difference between the upper part and the lower part of the crucible is reduced, and the processing quality of gemstones is improved.

The application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. The air conditioner comprises two air outlets arranged in a vertical direction; when the air conditioner is in a refrigeration operation, the control method comprises the following steps: obtaining a temperature difference between a first height and a second height of an indoor environment; and adjusting an air outlet angle and / or an air outlet air volume of the two air outlets according to the temperature difference and a predetermined priority order, wherein the priority of adjusting the upward air outlet angle is higher than that of adjusting the air outlet air volume. In the control method of the air conditioner, the air outlet angle of the air outlet is adjusted according to the temperature difference between the upper and lower indoor environments, so that the temperature difference between the upper and lower indoor environments can be reduced, the uniformity of the indoor temperature of the whole house can be improved, and the use experience of the user can be improved.

The utility model discloses a kind of even temperature type magnetic stirrers, it is related to magnetic stirrers technical field, including magnetic stirrer body, the left and right sides of the magnetic stirrer body are fixed with support, and the upper end of left and right two supports is respectively fixed with vertical rod and guide rod, and the outside of the vertical rod is equipped with adjusting mechanism, and the outside of the guide rod is equipped with guide mechanism, between the adjusting mechanism and guide mechanism simultaneously several groups of heating ring assembly are installed. The even temperature type magnetic stirrer, several groups of heating ring assembly are driven synchronous adjustment by adjusting mechanism and guide mechanism, to adapt to the container of different solution height, reduce up and down temperature difference, realize the cooperation of stirring and even temperature heating.

The present application relates to the technical field of tobacco recycling, and discloses a steam heat exchanger for tobacco extraction, which comprises an inlet and outlet cavity, a heating cavity and a transfer cavity. The inlet and outlet cavity and the transfer cavity are communicated through heat exchange pipes, the inlet and outlet cavity is divided into upper and lower cavities by a layered plate, and the heat exchange pipes pass through the heating cavity. The heating cavity is provided with odd number of at least three drainage plates staggered in upper and lower positions; the drainage plate between the inlet and outlet cavity and the inlet end is close to the inlet and outlet cavity, the drainage plate between the outlet end and the transfer cavity is close to the transfer cavity, the drainage plate is provided with a heat exchange pipe mounting hole and a vent hole. The bottom of the heat exchange pipe below the heating cavity is provided with a gas guide plate, the gas guide plate is parallel to the heat exchange pipe and leaves a gap, and a drain hole is arranged between the two drainage plates at the tail portion. The energy-saving heat exchanger reduces the temperature difference of the heating cavity, removes condensate water, adapts to multiple steam working conditions, improves the energy-saving effect and adaptability of heat exchange, and solves the problems of large temperature difference of the heat exchanger, difficulty in removing condensate water and difficulty in adapting to multiple steam working conditions in the extraction of tobacco.

The application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. The air conditioner comprises two air outlets arranged in a vertical direction; when the air conditioner is in a heating operation mode, the control method comprises the following steps: obtaining a temperature difference between a first height and a second height of an indoor environment; and adjusting the air outlet angle and / or the air outlet air volume of the two air outlets according to the temperature difference and in a predetermined priority order, wherein the priority of adjusting the downward air outlet angle is higher than that of adjusting the air outlet air volume. In the control method of the air conditioner, the air outlet angle of the air outlet is adjusted according to the temperature difference between the upper and lower parts of the indoor environment, so that the temperature difference between the upper and lower parts of the indoor environment can be reduced, the uniformity of the indoor temperature of the whole house can be improved, and the use experience of a user can be improved.

The invention relates to the technical field of household appliances, belongs to household kitchen appliances such as energy-saving ovens, and discloses a door body assembly of cooking equipment and the cooking equipment. The cover plate is fixed to the inner surface of the outer door, a fan mounting cavity and a camera mounting cavity are defined by the cover plate and the inner surface of the outer door, the camera mounting cavity comprises a first cavity and a second cavity, the first cavity is located on the upstream of the fan mounting cavity in the flowing direction of airflow, the first cavity faces the outer door and communicates with the outer side of the outer door and the fan mounting cavity, and the second cavity communicates with the fan mounting cavity. The second cavity is located at the downstream of the fan mounting cavity, and an exhaust outlet is formed in the side, away from the fan mounting cavity, of the second cavity; the fan is arranged in the fan mounting cavity, and an air outlet of the fan communicates with the second cavity; the camera assembly comprises a first part located in the first cavity and a second part located in the second cavity, the working condition of the camera assembly can be better improved, and the service life of the camera assembly is prolonged.

The application relates to the technical field of agricultural greenhouses, in particular to a ventilation device for an agricultural greenhouse, which comprises a wind guide pipe, a rectifier pipe, a first electromagnet and a second electromagnet, a plurality of one-way valves are uniformly arranged on the lower part of the side wall of the wind guide pipe in a circumferential direction, when the one-way valves are opened, the gas in the rectifier pipe enters the wind guide pipe through the one-way valves; the openings at the two ends of the rectifier pipe are provided with radially inwardly extending reduced-diameter parts, the inner side of the reduced-diameter parts is in sealing cooperation with the outer side of the wind guide pipe; the first electromagnet is fixedly connected to the upper part of the inner side of the rectifier pipe, the second electromagnet is located below the first electromagnet; the outer side of the second electromagnet is in sliding cooperation with the inner side of the rectifier pipe, the inner side of the second electromagnet is in sliding gap cooperation with the outer side of the wind guide pipe; the second electromagnet and the rectifier pipe are connected with a reset spring. The device can realize air convection in the greenhouse, reduce the air flow speed, reduce energy consumption and avoid crop damage.

The utility model relates to the field of seed culture, in particular to a plant seed culture box which comprises a box body, an air blower and an air circulation assembly. The air circulation assembly comprises a partition plate and a coil pipe, the partition plate is arranged in the box body, the partition plate and the inner wall of the box body form an interlayer, and a plurality of through holes are evenly distributed in the partition plate; the coil pipe is arranged in the interlayer, a plurality of air holes are formed in the coil pipe, an air inlet of the coil pipe is communicated with an air outlet of the air blower, and an air inlet of the air blower is communicated with the temperature and humidity adjusting device. When the temperature inside the cultivation box is regulated and controlled, temperature control gas flows from the coil pipes on the two sides of the box body to the middle of the cultivation box, horizontal symmetrical airflow circulation is formed, the temperature difference between the upper portion and the lower portion in the box body and local temperature dead angles are effectively reduced, and the uniformity of the seed cultivation environment temperature is improved.