A steam generator with highly variable heating power
A steam generator and heating power technology, applied in the boiler field, can solve the problems of low thermal efficiency, low heating efficiency, and slow heating, and achieve the effects of high heating efficiency, improved heating efficiency, and improved safety performance
Inactive Publication Date: 2019-03-15
SHANDONG JIAOTONG UNIV
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Problems solved by technology
The current steam generators are mostly heated by gas or fuel oil, and the heating efficiency is low. Most of the electric steam generators currently used are installed at the bottom of the water storage tank with electric heating tubes to directly heat the water in the water storage tank to generate steam.
This electric steam generator has the problems of slow heating and low thermal efficiency
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Embodiment Construction
[0036] Figure 1-5 A steam generator is shown. Such as figure 1 As shown, the steam generator includes a box body 1, an electric heating pipe 2, a cold water inlet 3, a hot water outlet 4 and a steam outlet 5, the cold water inlet 3 is arranged at the lower part of the box body 1, and the hot water outlet 4 The mouth is located at the top of the box body. The electric heating tube 2 is arranged in the casing, and the electric heating tube 2 is arranged in a vertical direction (perpendicular to the bottom plane of the water tank). The electric heating tube 2 includes an outer tube 21 and an electric heater arranged in the outer tube 21, The lower part of the electric heating tube 2 is provided with a water inlet channel to ensure that the water in the box body 1 can enter the electric heating tube 2 for heating, and the upper part of the electric heating tube 2 is connected to the steam outlet 5 .
[0037] As a preference, the pipe of the steam outlet 5 is in a sealed connec...
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The invention provides a steam generator with heating power changed in the height direction. The steam generator comprises a box body, an electric heating tube and a steam outlet; the electric heatingtube is arranged in the box body, comprises an outer tube and an electric heater arranged in the outer tube and is arranged in the vertical direction, and the upper part of the electric heating tubeis connected with the steam outlet; and the center of the electric heating tube is provided with a central electric heating rod in the axial direction, and the heating power of unit length of the central electric heating rod is continuously reduced in the height direction. According to the steam generator, the heating power of the electric heating rod is continuously reduced so that fluids at thelower part can be heated rapidly, then the hot fluids flow to the upper part through natural convection, and the fluids at the upper part and fluids outside the part, below the fluids at the upper part, of the electric heating tube quickly enter the lower part of the electric heating tube so that the heating efficiency can be further improved.
Description
technical field [0001] The invention relates to the technical field of boilers, in particular to a steam generator with a new structure. Background technique [0002] A steam generator is a mechanical device that uses heat from fuel or other energy sources to heat water into steam. The steam generator has a wide range of applications, and is widely used in clothing factories, dry cleaners, restaurants, steamed bun shops, canteens, restaurants, factories and mines, bean products factories and other places. Most of the current steam generators are heated by gas or fuel oil, and the heating efficiency is low. Most of the currently used electric steam generators use electric heating tubes installed at the bottom of the water storage tank to directly heat the water in the water storage tank to generate steam. This electric steam generator has the problems of slow heating and low thermal efficiency. [0003] For example, Chinese patent document CN2071061U discloses a steam gener...
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IPC IPC(8): F22B1/28
CPCF22B1/28F22B37/00H05B3/02H05B3/64
Inventor 黄雪涛钟兵王海霞刘彦臣智晋宁姚峰林
Owner SHANDONG JIAOTONG UNIV