62results about How to "Light weight unit" patented technology

The invention discloses a heat exchanger with a micro-channel, parallel-flow and all-aluminum flat pipe welding structure. The heat exchange part of the heat exchanger is formed by arranging flat pipes consisting of aluminum extruded thin-walled sections in parallel. Compared with the prior art, the heat exchanger with the micro-channel, parallel-flow and all-aluminum flat pipe welding structure has the advantages that: 1, the heat exchange efficiency of a refrigerant and the inner walls of the flat pipes is improved by 40 percent, and the flow resistance of the refrigerant in collecting pipes of the heat exchanger is reduced by 40 percent; 2, the heat exchange efficiency of fins on an air side is improved by 40 percent, and the wind resistance of the heat exchanger on the air side is reduced by 40 percent; 3, the heat exchange performance of the whole heat exchanger is improved by 40 percent; 4, compared with the prior art, the heat exchanger consumes 40 percent less refrigerant; and5, compared with the conventional copper-aluminum structure, the all-aluminum structure endows the heat exchanger with longer service life because of no copper-aluminum potential differences. The heat exchanger adopting the flat pipes has the characteristics of capability of bearing the conventional limitation of high-pressure resistance value of the refrigerant, compact product structure, light unit weight, short process flow, high manufacturing reliability and relatively lower cost. The invention also discloses the application of the heat exchanger.

A filtering face mask that includes a mask body that is adapted to fit over the nose and mouth of a person and a harness that is attached to the mask body. The mask body comprises i) a first shaping layer that has been molded; ii) a second shaping layer that has been molded; iii) a filtration layer that is disposed between the first and second shaping layers; iv) a first adhesive layer that adheres the first shaping layer to the filtration layer; and v) a second adhesive layer that adheres the second shaping layer to the filtration layer.

The invention relates to a combined type unreinforced thermal-insulating sandwich external wall slab and a manufacturing method for an inner laminate and an outer laminate of the same in order to solve the problems of poor fireproof safety for the thermal insulating construction of an external wall, cracking resistance of a wall slab material, complex construction caused by the employment of a reinforced keel as well as large thickness of a surface layer and high self-weight of a wall slab caused by conventional connecting pieces. In the first scheme, one extruded sheets or waterproof rock wool bars are respectively arranged at two ends of a rock wool layer, the head of each first FRP (Fiber Reinforced Plastic) connecting piece is arranged in a first lug boss, the other end of the same is arranged at the outer part the an inner laminate after penetrating through a corresponding preserved hole and a second lug boss, the head of each second FRP connecting piece is arranged in the first lug boss, and the other end of the same is arranged in the second lug boss after penetrating the corresponding preserved hole. In the second scheme, cement, pulverized fuel ash, silver sand, swelling agent and defoaming agent are uniformly mixed in a mixing machine in sequence; and materials are discharged and molds are cast after adding water reducing agent, water and steel fiber into the mixture. The combined type unreinforced thermal-insulating sandwich external wall slab is applied to building field.

The invention belongs to the technical field of special glass production, and provides an ultrathin ultra clear float solar battery glass production process and a product thereof. The process comprises the following steps: (1) preparing raw materials, (2) feeding and melting, (3) carrying out clarification, (4) carrying out homogenization, (5) carrying out tin stripping molding, (6) annealing, and (7) cutting. With the ultrathin ultra clear float solar battery glass production process, ultrathin ultra clear float solar battery glass with a thickness of 2.0-3.0 mm can be produced, wherein the glass has characteristics of high transmittance, low reflectivity and light unit weight, and is applicable for photovoltaic industry to be adopted as a photoelectric conversion substrate and a light-heat conversion panel so as to be used for solar battery manufacturing. In addition, with application of the process to produce the ultrathin ultra clear float solar battery glass, the production cost is low so as to reduce a production cost of the whole photovoltaic industry chain.