Porous-medium gas hot water heater

A gas-fired water heater and porous medium technology, applied in water heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of large volume, insufficient combustion intensity and heat exchange intensity, complex structure, etc., and achieve uniform temperature distribution, Conducive to heat return and good thermal conductivity

Active Publication Date: 2009-10-28
河北泓碳能源技术有限公司
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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

Method used

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Examples

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Embodiment 1

[0035] The structure and shape of this embodiment are shown in Figure 1~4 .

[0036] In the porous medium gas water heater of the present 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 diameter of the anti-tempering channel (18) is 15mm, and the arrangement is 2 rows, the center distance of the anti-tempering channel (18) is 30mm; the width of the water heater body is 150mm, the length is 280mm, and the height is 350mm, the spiral heat exchange tube (6) is a double-tube coiled shape, and the gas nozzle (1) is In the form of double inlets, the cross-sections of the premixing chamber (3), the water cooling sleeve (4), the spiral heat exchange tube (6) and the outer sleeve (10) are oblong, and the outer sleeve (10) burns on its corresponding There are 7 rows of air holes in the upper part of the chamber, each with 8 slits of 1mm width, and the size of the gap reserved between the...

Embodiment 2

[0038] Except for the following parts, others are the same as in Example 1.

[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 40mm, the length is 50mm, and the height is 150mm; the diameter of the anti-tempering channel (18) is 10mm, and the arrangement is 1 row, the center distance of the anti-tempering channel (18) is 20mm; the width of the water heater body is 100mm, the length is 100mm, and the height is 200mm, the spiral heat exchange tube (6) is a single tube coiled shape, and the gas nozzle (1) is In the form of a single inlet, the cross section of the premixing chamber (3), the water cooling sleeve (4), the spiral heat exchange tube (6) and the outer sleeve (10) is circular, and the corresponding combustion chamber on the outer sleeve (10) The upper part of the air vent is 3 rows of 4 1mm wide slits, the size of the gap left between the small pore porous medium material (5) a...

Embodiment 3

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

[0042] In the porous medium gas water heater of the present 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 diameter of the anti-tempering channel (18) is 20mm, and the arrangement is 6 rows, the center distance of the anti-tempering channel (18) is 40mm; the width of the water heater body is 300mm, the length is 460mm, and the height is 500mm, the spiral heat exchange tube (6) is a three-tube coiled shape, and the gas nozzle (1) is 6 Inlet form, the section of the premixing chamber (3), water cooling sleeve (4), spiral heat exchange tube (6) and outer sleeve (10) is elliptical, and the outer sleeve (10) is on its corresponding combustion chamber The upper part of the air vent is 5 rows, each row has 16 gaps with a width of 2mm, and the size of the gap reserved between the small-pore porous medium mater...

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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 heat released 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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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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