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Porous-medium gas hot water heater

A technology of gas water heaters and porous media, applied in water heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of insufficient combustion intensity and heat exchange intensity, complex structure, large volume, etc., and achieve favorable heat Return transmission, uniform temperature distribution, and good thermal conductivity

Active Publication Date: 2012-05-30
河北泓碳能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a porous medium gas water heater, which is filled with porous medium in the combustion chamber, and the heat exchange tube directly performs heat exchange in the form of radiation and heat conduction with the high-temperature porous medium in the combustion chamber, and the high-temperature flue gas is in its periphery Intense heat exchange is realized in the spiral channel between the dense heat exchange tubes and the porous medium, so that the flue gas is quenched and the water vapor is directly condensed on the tube wall, thus overcoming the large volume and complex structure of the existing gas water heater, and the combustion chamber Disadvantages of insufficient combustion intensity and heat exchange intensity

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0038] The structure and shape of this embodiment are shown in Figure 1~4 .

[0039] In the porous medium gas water heater of this embodiment, the width of the cylinder surrounded by the spiral heat exchange tubes 6 is 150mm, the length is 225mm, and the height is 225mm; The center distance of the tempering channel 18 is 30mm; the width of the water heater body is 150mm, the length is 280mm, and the height is 350mm; The cross-section of the sleeve 4, the spiral heat exchange tube 6 and the outer sleeve 10 is oblong, and the upper part of the outer sleeve 10 corresponding to the combustion chamber has 7 rows of vent holes, each with a total of 8 1mm wide holes. Gap, the size of the gap between the small-pore porous medium material 5 and the large-pore porous medium material 15 is 5 mm, and there are 12 anti-temper passages 18 connected up and down in the middle of the water-cooling sleeve 4, and the spiral heat exchange The width of the small gap left at the upper 1 / 3 of the...

Embodiment 2

[0041] Except for the following parts, others are the same as in Example 1.

[0042] In the porous medium gas water heater of this embodiment, the width of the cylinder surrounded by the spiral heat exchange tubes 6 is 40mm, the length is 50mm, and the height is 150mm; The center distance of the tempering channel 18 is 20mm; the width of the water heater body is 100mm, the length is 100mm, and the height is 200mm; The cross-section of the sleeve 4, the spiral heat exchange tube 6 and the outer sleeve 10 is circular, and the air holes provided on the upper part of the outer sleeve 10 corresponding to the combustion chamber are 3 rows of 4 slits with a width of 1 mm each. The size of the gap between the small-pore porous medium material 5 and the large-pore porous medium material 15 is 4 mm, and there is one anti-temper passage 18 connected up and down in the middle of the water-cooling sleeve 4, and the spiral heat exchange tube 6 The width of the small slit left at the upper ...

Embodiment 3

[0044] Except for the following parts, others are the same as in Example 1.

[0045] In the porous medium gas water heater of this embodiment, the width of the cylinder surrounded by the spiral heat exchange tubes 6 is 250mm, the length is 400mm, and the height is 300mm; The center distance of the tempering channel 18 is 40mm; the width of the water heater body is 300mm, the length is 460mm, and the height is 500mm; The cross-section of the sleeve 4, the spiral heat exchange tube 6 and the outer sleeve 10 is elliptical, and the air holes provided on the upper part of the outer sleeve 10 corresponding to the combustion chamber are 5 rows of 16 slits with a width of 2 mm each. The size of the gap between the small-pore porous medium material 5 and the large-pore porous medium material 15 is 6mm, and there are 42 anti-temper passages 18 connected up and down in the middle of the water-cooling sleeve 4, and the spiral heat exchange tube 6 The width of the small slit left at the u...

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Abstract

The invention discloses a porous-medium gas hot water heater, relating to a heater in which a pipe is wound into a spiral form to separate the continuous flows of water and a heating medium; the heater is structurally characterized in that: fine-pore porous medium materials are filled in an anti-backfire channel and a groove of a water cooling sleeve; macropore porous medium materials, which are metal fibers or foamed ceramics, are filled in a combustion chamber; heat exchanging tubes exchange heat directly with the macropore porous medium materials in the combustion chamber to conduct radiation or or heat exchange with the form of heat conduction, and high temperature fume realizes strong heat exchange between the peripheral dense heat exchanging tubes and the macropore porous-medium materials and leads the fume to be cooled rapidly and steam to condense directly on the tube walls; therefore, the heat conduction of the combustion chamber is strengthened and the heat released by the combustion can be rapidly and effectively transferred to water so that the steam in the fume condenses to recycle the condensation heat of water, thus realizing the goal of ultimately absorbing the heatreleased by the combustion. The hot water heater has simple structure and heat efficiency of over 96 percent, meeting the Grade-I energy efficiency standard for household rapid water heaters.

Description

technical field [0001] The technical proposal of the present invention relates to a heater that separates the continuous flow of water and heating medium by a spirally wound pipe, in particular a porous medium gas water heater. Background technique [0002] With the intensification of the energy and environmental crisis, countries all over the world have put forward higher requirements for energy efficiency and environmental pollutant emissions. Energy saving and emission reduction is an important task put forward by my country's "Eleventh Five-Year Plan". At present, the thermal efficiency standard for gas water heaters requires a minimum of 84%. In order to improve the efficiency of gas-fired water heaters, almost all existing technologies adopt the method of increasing the area of ​​the heat exchanger, that is, by adopting the form of finned tubes, or by increasing the flue gas condensation heat exchange surface to make the exhaust gas temperature lower than 100 °C , in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/14F24H9/18
Inventor 王恩宇吴晋湘
Owner 河北泓碳能源技术有限公司
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