Water tank type steam boilor

Abstract

The invention discloses a water tank type steam boiler, comprising a bucket, a heating device fixed in the bucket, a dual metal slice on the bucket, a steam exhaust pipe on the bucket, a water injection port and an installation hole of the heating device, wherein the heating device is installed in the installation hole of the heating device and composed of a box plate in the installation hole of the heating device and a ceramic heater conductively contacting with the box plate and the ceramic heater is a novel electric heating element formed by directly printing a resistor on an alumina billet, vacuum laminating it and baking it at 1600 DEG C. Because the surface of the electric heating element is insulated, the heating resistor is isolated from the air to greatly increase the service life. The heating element belongs to the surface heating and the surface temperature is uniformed and quickly increased, thus the ceramic heater is an energy saving product with high insulation intensity, large volume resistor, safety and reliability. The box plate is made of stainless steel, thus water scale does not occur without no danger for the human and the durability is increased.

Description

technical field [0001] The present invention relates to a water storage type steam generator which can be used in steam cleaners, steam irons and the like. Background technique [0002] See attached Figure 5 to attach Figure 7 The water storage type steam generator 40 in the prior art mainly includes a heating body 44 that can store water inside, a heating cover 41, and a heating device 46 installed on the bottom surface of the heating body 44. In order to ensure the overall sealing performance, the heating body 44 and Gaskets 42 are provided between the heating covers 41 . The heating body 44 and the heating cover 41 respectively protrude to prevent flow sheets 41b, 44c, so that even if the water storage type steam generator 40 shakes during cleaning, the flow of water can be restricted under the action of the flow prevention sheets 41b, 44c, making the storage The fluidity of water in the water-type steam generator 40 is controlled to a minimum to prevent water from be...

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Problems solved by technology

[0004] As mentioned above, it can be seen that the storage type steam generator in the prior art has the following problems: First, the heating device is composed of a die-cast body surrounding the electric heater, which is very heavy and consumes a large amount of expensive aluminum. material, and as the use time increases, the die-cast aluminum body will corrode due to long-term exposure to humid environments, thereby reducing durability; secondly, the U-shaped electric heater is a metal tube filled with nickel-chromium alloy wire Although the sheath heater (sheath-heater) with insulated magnesium oxide is very stable, as the insulating material moves or disappears, the nickel-chromium alloy wire may contact the inner wall of the metal tube and cause a short circuit; in addition, the sheath heater must be Reaching the operating temperature, its speed is very slow and the response speed is slow, so there is a disadvantage of large power consumption

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