Lamella heat exchanger and manufacturing method thereof and lamella evaporative condensing equipment

Abstract

The invention discloses a lamella heat exchanger comprising a lower pipe plate and heat exchange plate bundles which are vertically welded on the lower pipe plate. The heat exchange pipe bundle arranged on the outmost side is provided with a runner inlet and a runner outlet; each heat exchange pipe bundle comprises at least two mutually-overlapped and welded heat exchange plate sheets; transversely and longitudinally-arranged grooves and / or flanges are evenly distributed on the surfaces of the heat exchange plate sheets; and zigzag structures are arranged at the top ends of the heat exchange plate sheets. The invention simultaneously provides lamella evaporative condensing equipment applying the lamella heat exchanger, comprising an upper box body and a lower box body which are mutually connected as well as a water pump and a circulating water pipeline; an air inlet is formed above the upper box body; a spray device is arranged below the air inlet; and the lamella heat exchanger is positioned below the spray device and fixed to the upper box body through bolts. The invention simultaneously discloses a manufacturing method of the lamella heat exchanger. The lamella heat exchanger and the manufacturing method thereof and the lamella evaporative condensing equipment have high heat exchange efficiency, convenient cleaning, simple processing and low cost.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a plate-shell heat exchanger, a manufacturing method thereof, and a plate-shell evaporative condenser. Background technique [0002] Plate and shell evaporative steam condensing equipment is a new type of condensing equipment that combines the advantages of plate and shell heat exchangers and evaporative condensation technology. It is a new type of condensing device designed using unsaturated evaporative cooling technology, breaking through the traditional steam condensation The structural characteristics of the tube or fin heat exchanger in the equipment replace the traditional coil heat exchanger with a new plate and shell heat exchanger, which realizes the integration of condensation and heat dissipation. It has a compact structure, small size, and high pressure resistance. And the heat transfer efficiency is high, so it can be applied in power stations and waste heat po...

AI Technical Summary

Problems solved by technology

At present, the more advanced heat exchangers in the world are mainly plate heat exchangers, plate-shell heat exchangers or plate air coolers, but the heat transfer elements mostly use corrugated plates, and the common plate heat exchangers are replaced by welding and sealing. Although the rubber gasket seal improves the operating temperature and pressure bearing capacity of the plate equipment, the plate structure is mostly herringbone corrugated. Once welded into a plate bundle, a more complicated flow path is formed, and the media on both sides cannot flow in a staggered direction. The thermal effect is poor and mechanical cleaning cannot be achieved

[0003] Chinese patent 200820122512.5 discloses a plate type evaporative cooler. The evaporative plate heat exchange group inside it is composed of a plurality of special-shaped plates, and every two special-shaped plates form a cavity, and the special-shaped plates form the flow of the cavity. The channel section can be circular, trapezoidal, square, etc., but since the flow channel of the cavity formed by the special-shaped plate is unidirectional, that is, the longitudinal flow channel, the water flow will quickly flow through the longitudinal channel after being sprayed by the spray device. Falling into the PVC filling layer and the water tank at the bottom of the box, the time to stay in the special-shaped plate is relatively short, and the media on both sides cannot flow in a staggered direction, and even cannot form a continuous water film in many cases, so its heat transfer The cooling effect is poor, and when the spraying device sprays water to the special-shaped plate, due to the size of the spray range, the speed of the water flow is different, or other random factors, the water flow distribution on the special-shaped plate often occurs. Inhomogeneous situation, which also greatly affects its heat transfer and cooling effect, reducing the heat transfer efficiency

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