A steam generator with variable spacing between radial electric heating rods
A technology of a steam generator and an electric heating rod, applied in the field of boilers, can solve the problems of slow heating, low thermal efficiency, low heating efficiency, etc., and achieve the effects of improving safety performance, high heating efficiency, and improving heating effect
Inactive Publication Date: 2019-02-12
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
[0034] 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 .
[0035] 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 distances between radial electric heating rods changing. The steam generator comprises a box body and an electric heating tube, wherein the electric heating tube is arranged in the box body; and the center of the electric heating tube is provided with a central electric heating rod in the axial direction and a plurality of radial electric heating rodsextending in the radial direction along the central electric heating rod, and the distances between the radial electric heating rods which are adjacent to each other up and down in the height direction is larger and larger. According to the steam generator, the change of the distances between the radial electric heating rods is designed so that the fluid at the lower part can be rapidly heated, then the hot fluid flows to the upper part through the natural convection, and the fluid at the upper part and the fluid outside of part, below the fluid at the upper part, of the electric heating tubequickly flow in 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
CPCF22B1/28
Inventor 黄雪涛钟兵王海霞刘彦臣智晋宁姚峰林
Owner SHANDONG JIAOTONG UNIV