511results about How to "Increase heat exchange rate" patented technology

A camera module comprises a lens base, a lens cone and an image sensor. The lens cone and the image sensor are arranged in the lens base, and an optical component is arranged in the lens cone and coupled with the image sensor. The camera module further comprises at least one drive chip and a corresponding elastic sheet; the drive chip comprises a substrate, a shape memory alloy film arranged on the substrate and a control drive circuit; the control drive circuit supplies a drive current to the shape memory alloy film to cause the film to generate a recovery stress by resistance heating so that the drive chip is bent to drive the lens cone to move along an optical axis; and the control drive circuit stops supplying the drive current to cool the shape memory alloy film and eliminate the recovery stress, thus the elastic sheet rebounds to the lens cone.

A double pipe for a heat exchanger includes an inner pipe having a plurality of spiral projections extending radially outward from an outer peripheral surface of the inner pipe. An outer pipe is disposed around the inner pipe. At least an inner peripheral surface of the outer pipe is at least substantially smooth and has an at least substantially circular cross section. The inner peripheral surface of the outer pipe contacts all of the projections of the inner pipe so as to define a plurality of peripherally-separated, outer flow paths between the inner pipe and the outer pipe. Fluid flowing within an inner flow path defined by the inner pipe exchanges heat with fluid flowing through the outer flow paths. Furthermore, an inscribed circle of the inner pipe has a first diameter (d1), an inscribed circle of the outer pipe has a second diameter (d2), and 0.6<d1 / d2.

The present invention relates to a tube-side sequentially pulsable-flow, shell-and-tube heat exchanger apparatus and a chemical processing system comprising and methods of heat exchange employing the same.

The invention provides metal atomization pulverizing equipment with low satellite sphere content. The metal atomization pulverizing equipment comprises a metal feeding mechanism, an atomization device, an atomization tower and a powder separation device, wherein the metal feeding mechanism is connected with the atomization device; the atomization device is mounted at the top of the atomization tower; a main powder outlet is formed in the bottom of the atomization tower; the main powder outlet is communicated with the powder separation device; no less than three powder outlet holes are formed in the upper end or a sealing end of a side wall of the atomization tower; the powder outlet holes are formed in the periphery of an atomization powder output and coke collection region at the bottom of the atomization device; the powder outlet holes are connected with the powder separation device through a powder output pipeline. The metal atomization pulverizing equipment with the low satellite sphere content, provided by the invention, is simple in structure and convenient to use; metal atomization powder prepared by the equipment has uniform and small granularity, high spherical degree, good flowability and low satellite sphere content, and performance requirements on various types of metal powder in the market can be met; the equipment is low in manufacturing cost and is convenient forbatch production; urgent requirements on high-performance metal powder at home and abroad can be met.

The invention relates to a special extruder for manufacturing rubber, which comprises a base, a temperature control portion, a screw device, a driving motor, a speed reducer and a controller portion. The screw device comprises an outer cylinder, an inner cylinder and a screw, wherein the outer cylinder is fixed onto the base, the inner cylinder is arranged in the outer cylinder, and the screw is arranged in the inner cylinder. A spiral cold water injection cavity is arranged between the inner wall of the outer cylinder and the outer wall of the inner cylinder, a water inlet and a water outlet are respectively arranged on the outer cylinder and communicated with the cold water injection cavity, a cooling device comprises at least one water tank and coolers mounted on the water tanks, two ends of each water tank are connected with a water inlet pipe and a water outlet pipe respectively, the water inlet pipe is communicated with the water outlet, and the water outlet pipe is communicated with the water inlet. The cooling device is added into the screw device of the special extruder for manufacturing the rubber, the temperature of the screw and the rubber can be effectively reduced during extrusion of the rubber, heat exchange rate is increased, and premature melting of the rubber is avoided.

A method of freezing food for later thawing and use which includes the steps of packing a food product in a container for freezing, cooling the food substantially throughout the bulk thereof to about 10 DEG C. and then cooling the food substantially throughout the bulk thereof preferably from about 10 DEG C. to about -10 DEG C. in approximately 10 minutes to less than approximately 40 minutes.

The invention discloses a refrigerator. The refrigerator comprises a refrigeration chamber, and a circulating air way for supplying cooling capacity to the refrigeration chamber, wherein the refrigeration chamber is encircled by a first liner and a door body. The refrigerator further comprises a second liner surrounding the outer side of the first liner; openings of the first liner and the second liner are tightly connected; the first liner and the second liner are encircled to form a cavity surrounding the outer side of the first liner; and the second liner is provided with an air inlet communicated with the circulating air way for entering cold air into the cavity and an air return port communicated with the circulating air way for entering the air in the cavity into the circulating air way. The cold air in the cavity performs the heat exchange with the refrigeration chamber through five liner walls of the first liner, so that the refrigeration chamber is synchronously and uniformly refrigerated from five surfaces to achieve effects of improving the heat exchange efficiency and reducing the energy consumption; and meanwhile, the cold air is not directly contacted with foods in the refrigeration chamber to achieve such beneficial effects as difficult food airing, difficult frost damage and difficult tainting by order among all refrigeration chambers.