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601results about How to "Uniform temperature distribution" patented technology

Method of extermination utilizing heated air

A method of exterminating organisms is provided utilizing heated circulating air. First, a determination is made as to which enclosed areas of the building or other structure are to undergo extermination. This step defines an application zone. Next, a desired elevated temperature limit is established for heated air that is to be circulated through the application zone. Heaters are provided in airflow communication with the application zone, and circulation fans are positioned throughout the application zone to move the heated air for proper heat distribution. The heaters utilize an amount of recirculated air already present in the application zone to cut down on the amount of energy needed to raise the air temperature within the application zone towards the desired elevated temperature limit, and to eliminate the need for high CFM airflow heaters to achieve air temperature elevation. The temperature at various nodes within the application zone may be monitored to allow personnel to redirect circulating airflow within the application zone to balance out areas of higher air temperature with areas of lower air temperature. The method takes advantage of convection heat transfer to raise the temperature evenly within an application zone, minimizing temperature stratification which could result in ineffective pest extermination and/or damage to equipment and facilities.
Owner:IND FUMIGANT

Hot forming tool of titanium alloy thin-wall part and machining method of hot forming tool

ActiveCN102500675AViscoplastic deformation facilitatesAvoid lostShaping toolsTemperature controlProcess integration
The invention provides a hot forming tool of a titanium alloy thin-wall part, comprising five parts, namely stretching equipment, a mould device, a blank, a power supply system and a temperature control system, wherein the mould device is arranged on a central worktable of the stretching equipment; the blank passes through a side wall crack of the mould device; an insulating and heat-insulation cushion layer is used for insulating the blank, a clamp of the stretching equipment, the surface of a mould and a tool of the mould; the power supply system is switched on to electrify an electrode clamping plate and generate a current in the blank; the blank is heated and the temperature of the blank is measured and controlled by the temperature control system; and after the temperature of the blank reaches a target temperature, the part is formed on the surface on the mould by the blank in an adhered manner through carrying out hot forming processes successively including stretching, covering, stretching, heat preservation and creep deformation and the like on the stretching equipment. A machining method of the hot forming tool of the titanium alloy thin-wall part comprises eight steps. According to the invention, the heating efficiency, the process integration, the material formation and the formation precision of the titanium alloy thin-wall part in manufacture are greatly improved, so that the hot forming tool of the titanium alloy thin-wall part and the machining method of the hot forming tool have a practical value and a popularization value.
Owner:BEIHANG UNIV

Cavity type solar heat absorber provided with optical window

The invention relates to a cavity type solar heat absorber provided with an optical window, which relates to the technical field of solar energy and aims to solve the problems that the solar energy radiant heat flows absorbed by the conventional solar heat absorber are not distributed evenly so that the heat absorber has an over-high local temperature and is easy to be burnt through. The cavity type solar heat absorber comprises the heat absorber and heat absorbing tubes; the heat absorbing tubes are coiled up on the internal wall of the heat absorber according to the shape of the inner cavity of the heat absorber; and the shape of the inner cavity of the heat absorber is semi-spherical. The cavity type solar heat absorber also comprises an upward convex optical glass body and a protecting sheet; the heat absorber is a hollow cavity body; the protecting sheet is annular and is fixed on an inlet of the heat absorber; the upward convex optical glass body is arranged on the protecting sheet; and an inlet surface of the upward convex optical glass body facing the heat absorber is a convex surface, while an inlet surface backing on to the heat absorber is a flat surface. The cavity type solar heat absorber can efficiently receive radiant heat and transfer heat to working fluids so as to reduce local high temperatures and thermal stress concentrations on the wall surfaces of the heat absorbing tubes. The cavity type solar heat absorber can be widely used in the field of solar heat absorbers.
Owner:HARBIN INST OF TECH

Microwave-plasma chemical vapor deposition equipment

The invention provides microwave-plasma chemical vapor deposition equipment. The microwave-plasma chemical vapor deposition equipment comprises a microwave source, a first waveguide tube, a microwave mode converter and a resonance device, wherein one end of the first waveguide tube is connected with the microwave source, and the other end of the first waveguide tube is connected with the microwave mode converter; the resonance device comprises a resonance cavity and a microwave gathering unit, the top of the resonance cavity is provided with a medium window, the microwave mode converter is located on the upper part of the medium window, can perform mode conversion on microwave from the microwave source, and can transfer the microwave to the resonance cavity through the medium window, a base is arranged in the resonance cavity, a substrate is supported on the base, the supported substrate can be located below the medium window due to the arrangement of the substrate, and the microwave gathering unit is arranged on the resonance cavity and can gather the microwave transferred to the resonance cavity on the substrate. According to the microwave-plasma chemical vapor deposition equipment, through the arrangement of the microwave gathering unit, the distribution area of a microwave electric field on the substrate is expanded, so that microwave energy can be better concentrated on the area above the substrate, and deposition of a large-area diamond film is facilitated.
Owner:朱雨

Control method of air conditioner, control system of air conditioner, and air conditioner

The invention provides a control method of an air conditioner, a control system of the air conditioner, and the air conditioner. The control method of the air conditioner comprises the following steps: after a fan of the air conditioner operates at a default rotational speed for preset time, judging whether the working mode of the air conditioner is a refrigeration mode or a heating mode; if the working mode of the air conditioner is judged to be the refrigeration mode, judging whether a difference value between an environment temperature sensing and measuring value of an environment temperature measuring device and a preset environment temperature value is smaller than a first temperature difference value or not; when the difference value of the environment temperature sensing and measuring value and the preset environment temperature value is smaller the first temperature difference value, controlling the fan of the air conditioner to operate according to the first rotational speed, wherein a first rotational speed is greater than or equal to the default rotational speed. Through the adoption of the technical scheme, temperatures of different positions in a room are more uniform through the air conditioner in the refrigeration mode or the heating mode, so that the comfort degree of a user during using the air conditioner is improved, and the user experience is further improved.
Owner:WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1

Baking oven with uniform large-air-volume hot air convection barbecuing function

The invention discloses a baking oven with a uniform large-air-volume hot air convection barbecuing function. The baking oven comprises a centrifugal fan which is arranged between a baking oven shell and a baking oven chamber and is positioned on the top of the baking oven chamber, a plurality of baking tubes which run through the baking oven chamber, and a grill arranged in the baking oven chamber, wherein air outlets and an air return outlet are formed on the top wall of the chamber; flow deflection fans which can circulate the heat on both sides in the chamber are arranged on left and right sides of the baking oven chamber between the baking oven shell and the baking oven chamber respectively; lateral air outlets and lateral air return outlets which correspond to the flow deflection fans are formed on the wall on left and right sides of the baking oven chamber. In the baking oven, the centrifugal fan blows air from the upper part, and cross flow fans blow air from both sides, so that the uniform large-air-volume hot air convection circulation is formed, the temperature is uniformly distributed, the heat exchange area for food is large, the utilization rate of the heat is high, and the baking oven is favorable for the baking of flaky and large food. The upper and lower parts of the baking oven chamber can ensure the uniform flow of hot air after a baking tray is placed. A setting mode of the cross flow fans can also be used for microwave ovens.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Evaporation-cooled device attached to surface of super computer

The invention relates to an evaporation-cooled device attached to the surface of a super computer. A condenser (15) is arranged at the top of a super computer cabinet; and a liquid collection header pipe (11) is positioned downmost the evaporation-cooled device. N cooling liquid boxes (9) are positioned between the liquid collection header pipe (11) and a steam collection header pipe (12). A steam outlet pipe (13) is positioned above the steam collection header pipe (12) and under the condenser (15). The steam collection header pipe (12) is connected with the condenser (15) through the steam outlet pipe (13), and the condenser (15) is connected with the liquid collection header pipe (11) through a liquid returning pipe (14). The cooling liquid boxes (9) are in tight contact with heating elements of the super computer, N liquid inlet pipes (7) contained on the N cooling liquid boxes (9) are respectively communicated with the liquid collection header pipe (11), and N steam outlet pipes (8) contained on the N cooling liquid boxes (9) are respectively communicated with the steam collection header pipe (12), thereby forming an enclosed circulation cooling loop. A plurality of liquid channels with inner cavity bodies mutually communicated are arranged in the cooling liquid boxes (9) connected in parallel on a liquid path.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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