Flat plate type efficient heater

Abstract

The invention discloses a flat plate type efficient heater which comprises a plastic cavity tank and an aluminum alloy top cover. The top of the plastic cavity tank is open. A plurality of threaded holes are formed in the upper surfaces of the plastic cavity tank. Counterbores are formed in the positions, corresponding to the threaded holes, on the aluminum alloy top cover. The aluminum alloy top cover is connected with the plastic cavity tank through countersunk bolts. A comprehensive heat-insulation heat-preservation inflaming-retarding layer is arranged on the outer surface of the plastic cavity tank and comprises an asbestos heat-insulation layer, a polyurethane foam heat-insulation layer, a plastic heat-insulation film layer, a heat-insulation coating layer and an outer inflaming-retarding coating layer which are arranged from inside to outside in sequence. The total thickness of the asbestos heat-insulation layer, the polyurethane foam heat-insulation layer, the plastic heat-insulation film layer, the heat-insulation coating layer and the outer inflaming-retarding coating layer is larger than 0.5 cm but smaller than 0.6 cm. In this way, the flat plate type efficient heater is simple and reasonable in structure, has the good heat insulation and heat preservation performance, is small in hot loss of heating media and further has the good inflaming retarding performance.

Description

technical field [0001] The invention relates to the technical field of heating equipment, in particular to a plate-type high-efficiency heater. Background technique [0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. Heat exchangers are common equipment in chemical industry, petroleum, power, food and many other industrial sectors, and play an important role in production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are more widely used. [0003] Heat exchange heaters are widely used in all walks of life, among which flat plate heaters are widely used in some special industries, such as heating and drying materials on the conveyor belt. This is a typical application. At present , the heat insulation performance of this flat-plate heater is not good, the heat loss of the heating medium is relatively large, and the fl...

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Problems solved by technology

[0003] Heat exchange heaters are widely used in all walks of life, among which flat plate heaters are widely used in some special industries, such as heating and drying materials on the conveyor belt. This is a typical application. At present , the heat insulation performance of this kind of flat heater is not good, the heat loss of the heating medium is relatively large, and the flame retardant performance of the existing flat heater is not good

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