WO2021036796A1 - 一种具有盘绕型双层间壁式回热器的节能环保燃气灶 - Google Patents

一种具有盘绕型双层间壁式回热器的节能环保燃气灶 Download PDF

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Publication number
WO2021036796A1
WO2021036796A1 PCT/CN2020/108817 CN2020108817W WO2021036796A1 WO 2021036796 A1 WO2021036796 A1 WO 2021036796A1 CN 2020108817 W CN2020108817 W CN 2020108817W WO 2021036796 A1 WO2021036796 A1 WO 2021036796A1
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Prior art keywords
gas
regenerator
pipe
air
double
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PCT/CN2020/108817
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English (en)
French (fr)
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柳洪权
柳吉莉
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柳洪权
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Publication of WO2021036796A1 publication Critical patent/WO2021036796A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/001—Details arrangements for discharging combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/107—Pan supports or grates therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/008—Ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges

Definitions

  • the invention relates to an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator, in particular to a stove that can isolate high-temperature flue gas and heat radiation from indoor air when the stove is heated, and the waste heat can be recycled and reused.
  • An energy-saving and environmentally friendly gas cooker whose exhaust gas can all be discharged outdoors belongs to the technical field of gas cooker manufacturing.
  • the purpose of the present invention is to provide a method that can isolate high-temperature flue gas and heat radiation from indoor air when the cooker is heated, waste heat can be recycled, and exhaust gas can be fully utilized.
  • the energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator discharged to the outdoors can effectively improve the thermal efficiency of the gas stove, greatly reduce energy waste, and effectively reduce the thermal and chemical pollution of high-temperature exhaust gas in the kitchen.
  • An energy-saving and environmentally friendly gas stove with a coiled double-layer partition wall type regenerator comprising: a heat-preserving combustion chamber, a porous ceramic plate burner, a mixed gas inlet of the porous ceramic plate burner, an ignition needle, and a thermocouple flameout protection needle , Flue gas port, flue gas pipe, pot bottom bracket, lifting sealing pot frame ring, lifting sealing pot frame ring spring, air and gas full premixing tube, gas nozzle, coiled double-layer partition wall regenerator, coiled double-layer
  • the heat-preserving combustion chamber is a cylindrical shape with an upper opening and an outer flanging, and is fixedly arranged in a circular hole on the upper part of the gas stove shell, and the upper opening outer flanging ring is provided with a spring at the bottom. At least 4 circular positioning holes with an average radiation distribution corresponding to the pillars.
  • the outer side wall of the heat-preserving combustion chamber is covered with a high-temperature fire-resistant heat-insulating felt.
  • the lifting and sealing pot holder ring is a cylindrical shape with upper and lower openings, the upper opening is an outer flange, the lower opening is an inner flange, and the upper flange is fixedly installed with a radially symmetrical distribution according to the center of the circle. At least 4 cylindrical lifting and sealing pot holder ring positioning bolts, and the heat-preserving combustion chamber and the lifting and sealing pot holder ring are kept in clearance fit.
  • the pot bottom support is arranged on the porous ceramic plate burner, and is at least 4 L-shaped pillars distributed symmetrically according to the center of the circle.
  • the flue gas pipe has a rectangular structure and is arranged at the bottom of the heat-preserving combustion chamber. There are two holes in the upper part of the flue gas pipe, one of which is connected to the flue gas port, and the other is The hole is connected to the exhaust gas inlet of the coiled double-layer partition wall type regenerator.
  • the air-gas full premixing pipe is a rectangular structure and is arranged in the lower part of the heat-preserving combustion chamber. There are two holes on the upper part of the air-gas full premixing pipe, one of which is the same as the porous The mixed gas inlet of the ceramic plate burner is connected, and the other hole is connected with the air outlet of the coiled partition wall double-layer regenerator.
  • the coiled double-walled regenerator is fixedly installed on the gas stove shell, and has a coiled structure that extends from the inner ring to the outer ring in an involute manner, and the coiled type
  • the double-layer partition wall type regenerator is coiled and arranged on the outside of the outer ring of the heat preservation combustion chamber and maintains a certain gap.
  • the coiled double-layer partition wall type regenerator is a rectangular double-layer channel structure separated by a middle metal plate layer into an upper layer of air and a lower layer of exhaust gas.
  • the two ends of the upper air channel are respectively provided with inner rings
  • the air outlet at the end and the air inlet at the end of the outer ring are respectively provided at the two ends of the lower exhaust gas channel with an exhaust gas inlet at the end of the inner ring and an exhaust gas outlet at the end of the outer ring; among them: located in the inner ring of the upper air channel
  • the air outlet at the end is connected with the air-gas full premixing pipe
  • the air inlet at the outer ring end of the upper air channel is connected with the exhaust port of the combustion-supporting blower
  • the exhaust gas inlet at the inner ring end of the lower waste gas channel is connected with the flue gas pipe
  • the exhaust gas outlet located at the end of the outer ring of the lower exhaust gas channel is connected with the exhaust pipe to form the opposite and reverse flow of air fluid and exhaust gas
  • the gas nozzle is arranged at the end of the air and gas full premixing pipe, and is connected to the gas regulating valve through the gas pipe.
  • the porous ceramic plate burner is arranged in the heat-preserving combustion chamber of the main body of the gas stove, and the bottom end of the porous ceramic plate combustor is provided with a full pre-treatment of air and gas passing through the bottom of the heat-preserving combustion chamber.
  • One end of the mixing pipe is connected to the mixed gas inlet of the porous ceramic plate burner.
  • a preferred solution is to install an exhaust gas catalytic purification device at the rear end of the exhaust pipe to treat the nitrogen oxides, sulfides and other pollutants produced by combustion, so that various toxic and harmful pollutants can be completely treated before being discharged outdoors to ensure The indoor and outdoor environment is completely pollution-free.
  • the pot bottom When in use, the pot bottom is placed on the upper edge of the pot bottom bracket in the heat preservation combustion chamber. Since the positioning holes on the top flanging ring of the heat preservation combustion chamber correspond to the lifting sealing pot holder ring positioning bolts provided on the lifting sealing pot holder ring, the lifting sealing pot holder ring spring is arranged at the bottom of the heat preservation combustion chamber Therefore, the up-and-down lifting mechanism of the lifting and sealing pot holder ring is formed, so that the cylindrical heat-preserving combustion chamber and the cylindrical lifting and sealing pot holder ring always maintain the coaxial up and down lifting state with clearance fit.
  • the upper edge of the lifting and sealing pot holder ring can maintain close contact with the bottom of the pot, and together with the heat-preserving combustion chamber constitute the pot and the stove to the surrounding atmosphere
  • the porous ceramic plate burner is fixed in the heat-preserving combustion chamber, the high-temperature waste flue gas in the closed combustion chamber cannot be discharged through any other channels, and can only be discharged through the flue gas port provided at the bottom of the heat-preserving combustion chamber.
  • the exhaust gas is discharged into the inlet of the coiled double-walled regenerator.
  • the mixed gas continues to burn to form high-temperature heat radiation and high-temperature heat flow.
  • the flue gas heats the bottom of the pot.
  • the high-temperature exhaust gas is discharged into the flue gas pipe from the flue gas port under the action of the combustion-supporting blower and continues to be discharged Into the exhaust gas inlet at the end of the inner ring of the coiled double-walled regenerator, the high-temperature exhaust gas reheats the coiled double-walled regenerator when it flows through the longer exhaust gas passage of the coiled double-walled regenerator
  • the radiator emits heat, and the coiled double-walled regenerator made of metal material forms a heating and heat storage state.
  • the room temperature air flowing in the opposite direction is discharged by the combustion-supporting blower into the heated air channel tube of the coiled double-walled regenerator. It is gradually heated as it flows, and then heated to high temperature air, enters the air and gas full premixing tube and mixes with the gas. The gas sprayed by the nozzles are pre-mixed with each other, and become high-temperature mixed gas and then continue to be discharged into the cavity of the porous ceramic plate burner to be fully mixed. Because the coiled double-walled regenerator has a long air and exhaust gas passage, there is sufficient heat exchange time and sufficient heat exchange temperature difference when normal temperature air and high temperature exhaust gas flow in the tube, so it has a better heat exchange return. Thermal effect.
  • the thermal insulation combustion chamber is equipped with a porous ceramic plate burner, an ignition needle and a flameout protection needle. After the ignition device is ignited, the mixed combustible gas is burned on the surface of the porous ceramic plate burner to form high-temperature flue gas to heat the pot. At the same time, the overall temperature of the coiled double-walled regenerator is increased. After the temperature of the exhaust gas is lowered, the exhaust gas is discharged from the exhaust gas outlet into the exhaust pipe connected to the outdoors and then completely discharged out of the kitchen.
  • the perforated ceramic plate burner can be set to keep a small distance from the pot.
  • the high-temperature flue gas heating pot has a higher heat exchange efficiency.
  • thermocouple flameout protection needle a part of an energy-saving and environmentally friendly gas stove with a coiled double-layer partition wall type regenerator according to the present invention
  • ignition needle thermocouple flameout protection needle
  • combustion-supporting blower gas intake solenoid valve
  • gas regulating valve gas regulating valve
  • igniter a part of an energy-saving and environmentally friendly gas stove with a coiled double-layer partition wall type regenerator according to the present invention
  • the circuit control module can adopt standard products.
  • the present invention has the following beneficial effects:
  • An energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator provided by the present invention realizes the efficient recovery and utilization of sensible heat and latent heat of high-temperature flue gas, can greatly improve the thermal efficiency of gas stoves, and can significantly reduce fuel gas Consumption
  • the present invention provides an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator, which reduces the exhaust gas discharge temperature and then discharges it to the outdoors, effectively reducing thermal pollution and chemical pollution caused by high-temperature exhaust gas discharge , Thus providing a more comfortable and healthy kitchen cooking environment;
  • the present invention provides sufficient excess air coefficient through the combustion-supporting blower, so that the fuel gas can be completely combusted in a closed environment with sufficient oxygen supply, thereby effectively improving the fuel combustion efficiency, reducing the generation of nitrogen oxides, and having obvious energy saving and environmental protection. advantage.
  • FIG. 1 is a schematic diagram of a right cross-sectional structural view of an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator provided by an embodiment of the present invention
  • FIG. 2 is a schematic top view of an energy-saving and environmentally-friendly gas stove with a coiled double-walled regenerator provided by an embodiment of the present invention
  • Figure 3 is a left-side cross-sectional structural schematic diagram of an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator provided by an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a bottom view structure of an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator provided by an embodiment of the present invention
  • FIG. 5 is a three-dimensional schematic diagram of a coiled double-walled regenerator of an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator provided by an embodiment of the present invention
  • FIG. 6 is a three-dimensional structural diagram of an air-gas full premixed pipe of an energy-saving and environmentally-friendly gas stove with a coiled double-layer partition wall type regenerator provided by an embodiment of the present invention
  • this embodiment provides an energy-saving and environmentally friendly gas stove with a coiled double-walled regenerator, including: a heat-preserving combustion chamber 1, a porous ceramic plate burner 2, and a porous ceramic plate burning Mixer gas inlet 3, ignition pin 4, thermocouple flameout protection pin 5, flue gas port 6, flue gas pipe 7, pot bottom bracket 8, lifting sealing pot holder ring 9, lifting sealing pot holder ring spring 10, Air and gas full premixing pipe 11, gas nozzle 12, coiled double-walled regenerator 13, coiled double-walled regenerator air inlet 14, coiled double-walled regenerator air outlet 15 ,
  • the power socket 24 is connected to the power source, the main power switch 26 is turned on, and the combustion-supporting blower 18 is activated.
  • the air entering the gas stove flows in the following order: The air inlet 14 of the coiled double-walled regenerator, the air outlet 15 of the coiled double-walled regenerator, the air and gas full premixing pipe 11, the mixed gas inlet of the porous ceramic plate burner 3.
  • Ceramic plate burner 2 heat preservation combustion chamber 1, flue gas port 6, the exhaust gas inlet 16 of the coiled double-walled regenerator, the exhaust gas outlet 17 of the coiled double-walled regenerator, and finally by the exhaust connected to the outdoor
  • the air pipe 27 is discharged into the outdoor atmosphere.
  • the gas flows in the following sequence: the gas pipe supplied from the outside is connected to the gas inlet pipe 19, enters the gas inlet solenoid valve 20, and continues to enter the gas regulating valve 21.
  • the gas regulating valve 21 controls the amount of gas supplied.
  • the gas pipe 22 enters the air and gas full premixing pipe 11 to mix with the combustion-supporting air, and at the same time, the igniter 23 is started, and the mixed combustible gas is burned on the surface of the porous ceramic plate burner 2 to generate high-temperature flue gas and heat radiation to heat the pot bottom.
  • the heat-preserving combustion chamber 1 is fixedly installed in a circular hole on the upper part of the gas stove shell 28, and the outer sidewall surface and bottom of the heat-preserving combustion chamber 1 are covered with high-temperature insulation felt material to make The heat is not transferred to the gas stove housing 28.
  • the bottom of the pot is placed on the upper edge of the pot bottom bracket 8 in the heat-preserving combustion chamber 1.
  • the pot bottom bracket 8 keeps the pot stable and keeps the combustion plate of the porous ceramic plate burner 2 constant the distance.
  • the body of the heat preservation combustion chamber 1 is a cylindrical shape with an upper opening and an outer flange
  • the lifting and sealing pot holder ring 9 is a cylindrical shape with two openings
  • the upper opening is an outer flange
  • the lower opening is an inner flange.
  • the outer diameter of the lower cylindrical wall of the lifting and sealing pot holder ring 9 is smaller than the inner diameter of the heat-preserving combustion chamber 1.
  • the heat-preserving combustion chamber 1 and the lifting and sealing pot holder ring 9 always maintain a gap and sealing state, so that the flue gas in the combustion chamber 1 is kept warm. Unable to pass.
  • At least 4 circular positioning holes with an even radiation distribution are provided on the outer flange ring of the upper opening of the heat-preserving combustion chamber 1, and spring pillars corresponding to the circular positioning holes are provided at the bottom of the heat-preserving combustion chamber 1, and the pot holder is lifted and sealed.
  • the ring 9 is fixedly provided with at least 4 cylindrical lifting and sealing pot holder ring positioning bolts 30 evenly distributed according to the radial center of the upper edge of the flanging ring, which penetrates into the corresponding positioning holes of the upper edge flanging ring of the heat-preserving combustion chamber 1 ,
  • the up and down lifting mechanism is formed by the lifting and sealing pot holder ring spring 10 together.
  • the diameter of the cylindrical lifting and sealing pot holder ring positioning bolt 30 is smaller than the diameter of the positioning hole, and the spring 10 is sleeved on the lifting and sealing pot holder ring positioning bolt 30.
  • the lifting and sealing pot holder ring positioning bolt 30 is positioned to keep the heat-preserving combustion chamber 1 and the lifting and sealing pot holder ring 9 up and down coaxially.
  • the lifting and sealing pot holder ring 9 is pressed down, and under the elastic force of the lifting and sealing pot holder ring spring 10, it is forced
  • the upper edge of the lifting and sealing pot holder ring 9 is tightly attached to the bottom of the pot, and together with the heat-preserving combustion chamber 1 forms a closed isolation of the pot and the stove from the surrounding atmosphere, forming a closed combustion chamber.
  • the main function of the mechanism of lifting and sealing the pot holder ring 9, the pot bottom bracket 8 and the heat-preserving combustion chamber 1 is to make pots with different pot bottom shapes such as flat bottom, sharp bottom, round bottom, etc. can form a closed type. Combustion chamber.
  • the pot bottom bracket 8 is at least 4 L-shaped curved pillars arranged on the porous ceramic plate burner 2 with an even distribution of annular radiation, so that the bottom of the pot and the porous ceramic
  • the plate burner 2 forms a gap for the smooth flow of flue gas.
  • the opening of the gas regulating valve 21 also activates the igniter 23 and the ignition needle 4 at the same time. After the gas is ignited, the mixed gas burns on the surface of the porous ceramic plate burner 2. In the gap between the bottom of the pot and the upper surface of the porous ceramic plate burner 2, flowing high-temperature flue gas and heat radiation heat the pot.
  • the flue gas pipe 7 is arranged at the bottom of the heat-preserving combustion chamber 1, one end of the flue gas pipe 7 is connected to the flue gas port 6 of the heat-preserving combustion chamber 1, and the other end of the flue gas pipe 7 is connected to a coiled double-walled regenerator
  • the exhaust gas inlet 16 of the heat preservation combustion chamber 1 cannot be discharged through any other channels, and can only be discharged into the flue gas port 6 arranged at the bottom of the fixed heat preservation combustion chamber 1 into the exhaust gas inlet of the coiled double-walled regenerator 16.
  • the air-gas full premixing pipe 11 is arranged at the bottom of the heat-preserving combustion chamber 1, one end of which passes through the bottom of the heat-preserving combustion chamber 1 and is connected to the mixed gas inlet 3 of the porous ceramic plate burner, and the other end is connected to the coiled partition wall.
  • the air outlet 15 of the double regenerator is arranged at the bottom of the heat-preserving combustion chamber 1, one end of which passes through the bottom of the heat-preserving combustion chamber 1 and is connected to the mixed gas inlet 3 of the porous ceramic plate burner, and the other end is connected to the coiled partition wall.
  • the coiled double-layer partition wall regenerator 13 is made of metal plate materials such as stainless steel, iron, copper, aluminum, etc., and has a "Japanese"-shaped rectangular structure in which the air and exhaust gas channels are separated by a middle metal plate layer.
  • the coiled double-walled regenerator 13 Fixedly installed on the gas stove shell 28, the coiled double-walled regenerator 13 is provided with air and exhaust gas double-layer channels, the double-layer channels are the upper air channel and the lower exhaust gas channel, in the upper air channel
  • the two ends of the inner ring are respectively provided with an air outlet 15 at the end of the inner ring and an air inlet 14 at the end of the outer ring.
  • the two ends of the lower exhaust gas channel are respectively provided with an exhaust gas inlet 16 at the end of the inner ring and an end of the outer ring.
  • the outlet 15 and the mixed gas inlet 3 of the porous ceramic plate burner are connected in series with each other by an air-gas full premixing pipe.
  • the air inlet 14 at the end of the outer ring is fixedly connected with the air outlet of the combustion-supporting blower 18, and the outer ring
  • the exhaust gas outlet 17 at the end is fixedly connected to the exhaust pipe 27.
  • the coiled double-walled regenerator 13 of the present invention uses the waste heat of the flue gas to efficiently reheat and preheat the room temperature air, thereby greatly improving the thermal efficiency of the gas cooker, reducing the gas consumption, and reducing the exhaust gas discharge temperature. After that, all of them are discharged outdoors, which greatly reduces the thermal pollution of high-temperature exhaust gas.
  • the air fluid and exhaust gas fluid of the coiled double-walled regenerator 13 circulate in the respective channels in opposite directions.
  • the combustion-supporting blower 18 pumps normal-temperature air into the heated coiled double-walled regenerator 13 to flow in the air channel tube and is gradually heated, and the heated high-temperature air continues to enter the air-gas full premixing tube 11, and
  • the gas ejected from the gas nozzle 12 is pre-mixed with each other, and is discharged into the cavity of the porous ceramic plate burner 2 through the mixed gas inlet 3 of the porous ceramic plate burner to continue to be fully mixed.
  • Sufficient excess air coefficient is provided by the combustion-supporting blower 18, and the fuel gas is completely combusted in a closed environment with sufficient oxygen supply, thus effectively improving the combustion efficiency of the fuel and reducing the generation of nitrogen oxides, which has obvious progress in energy saving and environmental protection.
  • the gas nozzle 12 is arranged at the end of the air and gas full premixing pipe 11, located at the lower part of the connection between the air outlet 15 of the coiled double-walled regenerator and the air and gas full premixing pipe 11, and the gas nozzle 12 is formed by
  • the gas pipe 22 is connected to the gas regulating valve 21.
  • the inner wall of the gas stove shell 28 is fixedly covered with a high-temperature-resistant, fire-resistant and heat-insulating material, which can ensure that heat is not transferred to the stove shell.
  • the combustion-supporting blower 18, the gas intake solenoid valve 20, and the thermocouple flameout protection needle 5 of this embodiment are mutually linked and controlled by the circuit control module 25. After the main power switch 26 is turned on, the combustion-supporting blower 18 and the gas intake solenoid will be activated at the same time. Any one of the valve 20, the combustion-supporting blower 18 and the thermocouple flameout protection needle 5 stops working, and the gas intake solenoid valve 20 on the gas intake pipe 19 immediately stops the power supply to shut off the gas intake, thereby eliminating potential safety hazards.
  • thermocouple flameout protection needle 5 is a well-known technology, and will not be repeated in this embodiment.
  • the distance between the porous ceramic plate burner 2 and the bottom of the pot is kept within 10 mm by the bottom bracket 8 of the pot.
  • the outer surface of the coiled double-walled regenerator 13 is covered with fireproof and thermal insulation materials, which can ensure that heat is not released into the air.
  • the casing 28 of the gas stove is a rectangular body, with a circular hole ring in the middle of the top surface, and the diameter of the circular hole is larger than the diameter of the lifting and sealing pot holder ring 9.
  • the perforated high temperature resistant glass panel 29 is a rectangular plate body, and its length and width are the same as those of the gas stove shell 28, and a round hole is opened in the middle.
  • the diameter of the round hole is larger than that of the lifting and sealing pot holder ring 9
  • the diameter of the high-temperature-resistant glass panel 29 with openings can prevent users from being burned and eliminate potential safety hazards.
  • the porous ceramic plate burner 2 is arranged in the heat preservation combustion chamber 1 of the main body of the gas stove.
  • the bottom end of the porous ceramic plate burner 2 is provided with the mixed gas inlet 3 of the porous ceramic plate burner.
  • the gas outlet end of the mixing pipe 11 penetrates the bottom of the heat-preserving combustion chamber 1 and extends into the combustor 2 of the porous ceramic plate.
  • One end of the exhaust pipe 27 is connected to the exhaust gas outlet 17 at the end of the coiled double-walled regenerator 13, and the other end is connected to the outdoor.
  • the exhaust gas can be completely discharged from the kitchen, thereby providing a more comfortable and healthy kitchen cooking surroundings.

Abstract

一种具有盘绕型双层间壁式回热器的节能环保燃气灶，包括：保温燃烧腔(1)、多孔陶瓷板燃烧器(2)、烟气口(6)、烟气管(7)、锅底支架(8)、升降密封锅架圈(9)、升降密封锅架圈弹簧(10)、空气燃气全预混管(11)、燃气喷嘴(12)、盘绕型双层间壁式回热器(13)、盘绕型双层间壁式回热器空气进口(14)及空气出口(15)、盘绕型双层间壁式回热器废气进口(16)及废气出口(17)、助燃鼓风机(18)、燃气进气管(19)、燃气调节及点火部件、排气管(27)、燃气灶壳体(28)、开孔耐高温玻璃面板(29)和升降密封锅架圈定位栓(30)。由锅具、保温燃烧腔(1)和升降密封锅架圈(9)形成封闭式燃烧腔，以完成加热后的高温废气在助燃鼓风机(18)的强制通风作用下由烟气口(6)排入烟气管(7)，再排入盘绕型双层间壁式回热器(13)的废气通道进行放热降温；由助燃鼓风机(18)强制排入的反向流动的常温空气进入已升温的盘绕型双层间壁式回热器(13)的空气通道管内进行流动换热升温；废气由连通室外的排气管(27)全部排出厨房，该燃气灶可以回收废热，热效率高。

Description

一种具有盘绕型双层间壁式回热器的节能环保燃气灶 技术领域
本发明是涉及一种具有盘绕型双层间壁式回热器的节能环保燃气灶，特别涉及一种在灶具加热时，能使高温烟气及热辐射与室内空气相隔离、废热可回收利用、废气能全部排放到室外的节能环保燃气灶具，属于燃气灶具制造技术领域。
背景技术
目前常见的燃气灶具均是由灶壳体、炉盘燃烧器、锅支架等零件组成，一般都是炉盘外露的开放式燃烧方式，在实际使用中，这种开放式燃气灶存在以下几个主要缺陷：
1)热效率较低，热损失较大，主要原因是开放式燃烧的火焰在加热锅具时，外焰同时加热了周围空气，而没有参与锅体的加热，以致火焰热能和辐射只有一部分被锅体吸收，并且烟气离开锅时的温度还很高，这两部分的大量热量都因没有任何热回收措施而被排放到厨房室内空气环境中，造成了极大的能源浪费；
2)开放式燃烧所产生的各种化学污染物，如一氧化碳、氮氧化合物等有毒有害气体全部被排放在室内空气中，对室内环境造成污染，严重危害了使用者的身体健康；
3)开放式燃烧时排放的高温废气在厨房室内产生热污染，尤其是在夏季，致使烹饪环境酷热难耐，造成厨房内空气环境恶劣，也严重危害了使用者的身体健康。
发明内容
为解决现有开放式燃气灶具所存在的上述问题，本发明的目的是在于提供一种在灶具加热时，能使高温烟气及热辐射与室内空气相隔离、废热可回收利用、废气能全部排放到室外的具有盘绕型双层间壁式回热器的节能环保燃气灶，以有效提高燃气灶的热效率、大幅减少能量浪费及有效降低厨房室内高温废气的热污染和化学污染。
为实现上述目的，本发明采用的技术方案如下：
一种具有盘绕型双层间壁式回热器的节能环保燃气灶，包括：保温燃烧腔，多孔陶瓷板燃烧器，多孔陶瓷板燃烧器的混合燃气进气口，点火针，热电偶熄火保护针，烟气口，烟气管，锅底支架，升降密封锅架圈，升降密封锅架圈弹簧，空气燃气全预混管，燃气喷嘴，盘绕型双层间壁式回热器，盘绕型双层间壁式回热器的空气进口，盘绕型双层间壁式回热器的空气出口，盘绕型双层间壁式回热器的废气进口，盘绕型双层间壁式回热器的废气出口，助 燃鼓风机，燃气进气管，燃气进气电磁阀，燃气调节阀，燃气管，点火器，电源插口，电路控制模块，总电源开关，排气管，燃气灶壳体，开孔耐高温玻璃面板和升降密封锅架圈定位栓；由锅具、保温燃烧腔和升降密封锅架圈形成封闭式燃烧腔，以完成加热后的高温废气在助燃鼓风机的强制通风作用下由烟气口排入烟气管，再排入盘绕型双层间壁式回热器的废气通道进行放热降温；由助燃鼓风机强制排入的反向流动的常温空气进入已升温的盘绕型双层间壁式回热器的空气通道管内进行流动换热升温；废气由连通室外的排气管全部排出厨房。
一种实施方案，所述的保温燃烧腔为上开口外翻边圆筒形，固定设置在燃气灶壳体上部的圆孔中，并且，在上开口外翻边圈上设有与底部的弹簧支柱相对应的平均辐射分布的至少4个圆定位孔。
一种优选方案，在保温燃烧腔的外侧壁覆贴耐高温防火保温毡。
一种实施方案，所述的升降密封锅架圈为上下开口的圆筒形，上开口为外翻边，下开口为内翻边，在上翻边部位固定安装有按圆心平均辐射对称分布的至少4个圆柱形的升降密封锅架圈定位栓，且保温燃烧腔与升降密封锅架圈保持间隙配合。
一种实施方案，所述的锅底支架设置在所述多孔陶瓷板燃烧器上，是按圆心平均辐射对称分布的至少4根L形支柱。
一种实施方案，所述的烟气管为矩形结构，设置在保温燃烧腔的底部，在所述的烟气管的上部开有2个孔，其中1个孔连接烟气口，另1个孔连接盘绕型双层间壁式回热器的废气进口。
一种实施方案，所述的空气燃气全预混管为矩形结构，设置在保温燃烧腔的下部，在所述的空气燃气全预混管的上部开有2个孔，其中1个孔与多孔陶瓷板燃烧器的混合燃气进气口连接，另1个孔与盘绕型间壁式双层回热器的空气出口相连接。
一种实施方案，所述的盘绕型双层间壁式回热器固定安装在燃气灶壳体上，具有由内圈以渐开形式延伸到外圈的盘绕形结构特征，且所述的盘绕型双层间壁式回热器盘绕设置在保温燃烧腔的外圈外侧并保持一定间隙。
进一步实施方案，所述的盘绕型双层间壁式回热器是由中间金属板层分隔成上层空气和下层废气的矩形双层通道结构，在上层空气通道的两个端部分别设有内圈端部的空气出口和外圈端部的空气进口，在下层废气通道的两个端部分别设有内圈端部的废气进口和外圈端部的废气出口；其中：位于上层空气通道内圈端部的空气出口与空气燃气全预混管连接，位于上层空气通道外圈端部的空气进口与助燃鼓风机的排风口连接，位于下层废气通道内圈端部的废气进口与烟气管连接，位于下层废气通道外圈端部的废气出口与排气管连接，形成空气 流体与废气流体在各自通道内的相反逆向流动。
一种实施方案，所述的燃气喷嘴设置在空气燃气全预混管的端部，并通过燃气管与燃气调节阀相连接。
一种实施方案，所述的多孔陶瓷板燃烧器设在燃气灶主体的保温燃烧腔内，在所述的多孔陶瓷板燃烧器的底端设有与穿过保温燃烧腔底部的空气燃气全预混管的一端相连接的多孔陶瓷板燃烧器的混合燃气进气口。
一种优选方案，在排气管后端设置废气催化净化装置，以处理燃烧产生的氮氧化物、硫化物等污染物，使各种有毒有害污染气体达到完全处理后再排放到室外，以保证室内外环境完全无污染。
在使用时，锅底放置于保温燃烧腔内的锅底支架上缘。由于设在保温燃烧腔的顶部翻边圈环上的定位孔与设在升降密封锅架圈上的升降密封锅架圈定位栓相对应，升降密封锅架圈弹簧是设置在保温燃烧腔的底部，从而组成了升降密封锅架圈的上下升降机构，使圆筒形保温燃烧腔体和圆筒形升降密封锅架圈始终保持间隙配合的同轴上下升降状态。升降密封锅架圈在升降密封锅架圈弹簧的弹力作用下，升降密封锅架圈上缘能与锅具底部保持紧密贴合，与所述的保温燃烧腔共同构成锅具和灶具对周围大气的封闭隔离，形成封闭式燃烧腔。
因所述多孔陶瓷板燃烧器固定在所述保温燃烧腔内，因而封闭式燃烧腔内的高温废烟气不能通过任何其他通道排出，只能由设置在保温燃烧腔底部的烟气口排出并排入盘绕型双层间壁式回热器的废气进口。
燃气点火后，混合燃气持续燃烧形成高温热辐射和高温热流烟气加热锅具底部，完成加热锅具后的高温废气在助燃鼓风机风压的作用下由烟气口排进烟气管并继续排入盘绕型双层间壁式回热器的内圈端部的废气进口，高温废烟气在盘绕型双层间壁式回热器较长长度的废气通道流动时对盘绕型双层间壁式回热器放热，由金属材料制成的盘绕型双层间壁式回热器形成升温蓄热状态。同时，反方向流动的常温空气由助燃鼓风机排入已升温的盘绕型双层间壁式回热器的空气通道管内流动时被逐步加热，升温为高温空气后进入空气燃气全预混管中与燃气喷嘴喷出的燃气相互预混合，成为高温混合燃气后继续排入多孔陶瓷板燃烧器腔体中充分混合。因盘绕型双层间壁式回热器具有较长的空气和废气通道，因此常温空气和高温废气在管内流动时有充分的换热时间和足够的换热温差，因而具有较好的换热回热效果。
所述的保温燃烧腔内装有多孔陶瓷板燃烧器、点火针和熄火保护针。点火装置点火后，混合可燃气在多孔陶瓷板燃烧器表面燃烧，形成高温烟气加热锅具。同时也使盘绕型双层间壁式回热器的整体温度上升，废气的温度降低后由废气出口排入连通室外的排气管后完全排 出厨房。
因本发明所述的一种具有盘绕型双层间壁式回热器的节能环保燃气灶设置有助燃鼓风机进行强制通风，因此可以设置多孔陶瓷板燃烧器与锅具之间保持较小的距离，使高温烟气加热锅具的换热效率更高。
本发明所述的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的部分零件，点火针、热电偶熄火保护针、助燃鼓风机、燃气进气电磁阀、燃气调节阀、点火器、电路控制模块均可采用标准产品。
与现有技术相比，本发明具有如下有益效果：
1)本发明提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶，实现了高温烟气显热和潜热的高效回收利用，可大幅提高燃气灶具的热效率，可显著降低燃气消耗；
2)本发明提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶，使废气排放温度降低后再全部排放到室外，有效降低了高温废气排放所造成的热污染和化学污染，从而提供了更加舒适健康的厨房烹饪环境；
3)本发明通过助燃鼓风机提供足够的过剩空气系数，使燃气在供氧量充足的封闭环境内实现完全燃烧，从而有效提高了燃料的燃烧效率，降低了氮氧化物的生成，具有明显节能环保优点。
附图说明
图1是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的右视剖面结构示意图；
图2是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的上视结构示意图；
图3是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的左视剖面结构示意图；
图4是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的下视结构示意图；
图5是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的盘绕型双层间壁式回热器的立体结构示意图；
图6是本发明实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶的空气燃气全预混管的立体结构示意图；
图中标号示意如下：1-保温燃烧腔；2-多孔陶瓷板燃烧器；3-多孔陶瓷板燃烧器的混合燃气进气口；4-点火针；5-热电偶熄火保护针；6-烟气口；7-烟气管；8-锅底支架；9-升降密封锅架圈；10-升降密封锅架圈弹簧；11-空气燃气全预混管；12-燃气喷嘴；13-盘绕型双层间壁式回热器；14-盘绕型双层间壁式回热器的空气进口；15-盘绕型双层间壁式回热器的空气出口；16-盘绕型双层间壁式回热器的废气进口；17-盘绕型双层间壁式回热器的废气出口；18-助燃鼓风机；19-燃气进气管；20-燃气进气电磁阀；21-燃气调节阀；22-燃气管；23-点火器；24-电源插口；25-电路控制模块；26-总电源开关；27-排气管；28-燃气灶壳体；29-开孔耐高温玻璃面板；30-升降密封锅架圈定位栓。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚，下面结合附图和实施例对本发明作进一步的说明。
在本申请的描述中，需要理解的是，术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图1、图2所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
结合图1至图6所示，本实施例提供的一种具有盘绕型双层间壁式回热器的节能环保燃气灶，包括：保温燃烧腔1，多孔陶瓷板燃烧器2，多孔陶瓷板燃烧器的混合燃气进气口3，点火针4，热电偶熄火保护针5，烟气口6，烟气管7，锅底支架8，升降密封锅架圈9，升降密封锅架圈弹簧10，空气燃气全预混管11，燃气喷嘴12，盘绕型双层间壁式回热器13，盘绕型双层间壁式回热器的空气进口14，盘绕型双层间壁式回热器的空气出口15，盘绕型双层间壁式回热器的废气进口16，盘绕型双层间壁式回热器的废气出口17，助燃鼓风机18，燃气进气管19，燃气进气电磁阀20，燃气调节阀21，燃气管22，点火器23，电源插口24，电路控制模块25，总电源开关26，排气管27，燃气灶壳体28，开孔耐高温玻璃面板29和升降密封锅架圈定位栓30；由锅具、保温燃烧腔1和升降密封锅架圈9形成封闭式燃烧腔，以完成加热后的高温废气在助燃鼓风机18的强制通风作用下由烟气口6排入烟气管7，再排入盘绕型双层间壁式回热器13的废气通道进行放热降温；由助燃鼓风机18强制排入的反向流动的常温空气进入已升温的盘绕型双层间壁式回热器13的空气通道管内进行流动换热升温；废气由连通室外的排气管27全部排出厨房。
请再参见图1和图2所示，电源插口24连接电源，总电源开关26打开，启动助燃鼓风 机18，在助燃鼓风机18的风压作用下，进入燃气灶的空气按如下顺序进行流动：经由盘绕型双层间壁式回热器的空气进口14、盘绕型双层间壁式回热器的空气出口15、空气燃气全预混管11、多孔陶瓷板燃烧器的混合燃气进气口3、多孔陶瓷板燃烧器2、保温燃烧腔1、烟气口6、盘绕型双层间壁式回热器的废气进口16、盘绕型双层间壁式回热器的废气出口17，最后由连通室外的排气管27排放室外大气中。
燃气按如下顺序进行流动：由外部供入的燃气管道连接燃气进气管19，进入燃气进气电磁阀20，继续进入燃气调节阀21，由燃气调节阀21控制供入燃气量的大小，燃气从燃气管22进入空气燃气全预混管11与助燃空气混合，与此同时启动点火器23，混合可燃气在多孔陶瓷板燃烧器2的表面燃烧，燃烧生成高温烟气和热辐射以加热锅具底部。
再参见图1所示，所述的保温燃烧腔1为固定安装在燃气灶壳体28上部的圆孔中，保温燃烧腔1的外侧壁表面和底部均贴覆耐高温保温毡材料，以使热量不被传递到燃气灶壳体28上。锅具在使用时，锅底放置在所述的保温燃烧腔1内的锅底支架8的上缘，由锅底支架8保持锅具的稳定并使多孔陶瓷板燃烧器2的燃烧盘保持一定的距离。所述的保温燃烧腔1体为上开口外翻边圆筒形，所述的升降密封锅架圈9为两头开口的圆筒形，上开口为外翻边，下开口为内翻边。所述的升降密封锅架圈9下部圆筒壁的外径小于保温燃烧腔1的内径，保温燃烧腔1与升降密封锅架圈9始终保持间隙密封状态，使保温燃烧腔1内的烟气无法通过。在保温燃烧腔1的上开口外翻边圈上设有平均辐射分布的至少4个圆定位孔，在保温燃烧腔1的底部设有与圆定位孔相对应的弹簧支柱，在升降密封锅架圈9的上沿翻边环形部位固定设置有按圆心辐射平均分布的至少4个圆柱形升降密封锅架圈定位栓30，穿入保温燃烧腔1的上沿翻边环的相对应的定位孔，由升降密封锅架圈弹簧10共同构成上下升降机构。所述的圆柱形升降密封锅架圈定位栓30的直径小于定位孔的直径，弹簧10套置在升降密封锅架圈定位栓30上。由升降密封锅架圈定位栓30定位保持保温燃烧腔1体和升降密封锅架圈9同轴上下升降。因锅具自身具有一定重量，锅具底部压在所述的升降密封锅架圈9时，将升降密封锅架圈9往下压下，在升降密封锅架圈弹簧10的弹力作用下，迫使升降密封锅架圈9的上缘与锅具底部紧密贴合，与所述的保温燃烧腔1共同构成锅具和灶具对周围大气的封闭隔离，形成封闭式燃烧腔。在本实施例中，升降密封锅架圈9的机构、锅底支架8和保温燃烧腔1的主要作用是使平底、尖底、圆底等任何不同锅底形状的锅具都可形成封闭式燃烧腔。
再参见图1所示，所述锅底支架8是设置在所述多孔陶瓷板燃烧器2上的环形辐射平均分布的至少4根L形弯曲支柱，使所述锅具底部与所述多孔陶瓷板燃烧器2形成烟气顺利流通的空隙，燃气调节阀21的开启，也同时启动点火器23和点火针4，燃气点火后，混合燃 气在多孔陶瓷板燃烧器2的表面燃烧，在所述锅具底部与所述多孔陶瓷板燃烧器2的上表面空隙中形成流动的高温烟气和热辐射加热锅具。
所述的烟气管7设置在保温燃烧腔1的底部，烟气管7的一端连接保温燃烧腔1的烟气口6，烟气管7的另一端连接盘绕型双层间壁式回热器的废气进口16，保温燃烧腔1的废烟气不能通过任何其他通道排出，只能排入设置在固定保温燃烧腔1底部的烟气口6进入盘绕型双层间壁式回热器的废气进口16。
所述空气燃气全预混管11设置在保温燃烧腔1的底部，其一端穿过保温燃烧腔1底部与多孔陶瓷板燃烧器的混合燃气进气口3连接，其另一端连接盘绕形间壁式双层回热器的空气出口15。
所述的盘绕型双层间壁式回热器13采用不锈钢、铁、铜、铝等金属板材料制成，具有由中间金属板层将空气和废气的通道分隔开的“日”字形矩形结构，固定安装在燃气灶壳体28上，所述的盘绕型双层间壁式回热器13设有空气和废气双层通道，双层通道分别是上层空气通道和下层废气通道，在上层空气通道的两个端部分别设有内圈端部的空气出口15和外圈端部的空气进口14，在下层废气通道的两个端部分别设有内圈端部的废气进口16和外圈端部的废气出口17，其中：盘绕型双层间壁式回热器的废气进口16与保温燃烧腔1的烟气口6由烟气管7串接，盘绕型双层间壁式回热器的空气出口15与所述的多孔陶瓷板燃烧器的混合燃气进气口3由空气燃气全预混管相互串接，外圈端部的空气进口14与助燃鼓风机18的排风口固定连接，外圈端部的废气出口17与排气管27固定连接。高温烟气在排入废气通道流动时，对盘绕型双层间壁式回热器13进行放热，使盘绕型双层间壁式回热器13的整体温度上升，废气的温度被放热降低后，经盘绕型双层间壁式回热器的废气出口17最终由连通室外的排气管27排出厨房。本发明所述的盘绕型双层间壁式回热器13是利用烟气余热对常温空气进行高效回热预热，从而大幅提高了燃气灶具的热效率和降低了燃气消耗，并使废气排放温度降低后全部排放到室外，大幅减少了高温废气的热污染。
所述的盘绕型双层间壁式回热器13的空气流体与废气流体在各自通道内流通的方向是相反逆向。
所述的助燃鼓风机18抽送常温空气进入已升温的盘绕型双层间壁式回热器13的空气通道管内流动并被逐步加热，已升温的高温空气继续进入空气燃气全预混管11中，与燃气喷嘴12喷出的燃气相互预混合，经多孔陶瓷板燃烧器的混合燃气进气口3排入多孔陶瓷板燃烧器2的腔体内继续充分混合。由助燃鼓风机18提供足够的过剩空气系数，燃气在供氧量充足的封闭环境内实现完全燃烧，因而有效提高了燃料的燃烧效率和降低了氮氧化物的生成，具有 节能环保的明显进步性。
所述的燃气喷嘴12设置在空气燃气全预混管11的端部，位于盘绕型双层间壁式回热器的空气出口15与空气燃气全预混管11的连接处下部，燃气喷嘴12由燃气管22连接燃气调节阀21。
所述的燃气灶壳体28的壳内壁侧固定贴覆耐高温防火保温材料，可确保热量不被传递到灶具外壳上。
本实施例的助燃鼓风机18、燃气进气电磁阀20和热电偶熄火保护针5互为联动控制，由电路控制模块25控制，总电源开关26打开后，同时启动助燃鼓风机18和燃气进气电磁阀20，助燃鼓风机18和热电偶熄火保护针5的其中任何一个停止工作，燃气进气管19上的燃气进气电磁阀20立即停止供电以关闭燃气的进气，杜绝了安全隐患。
所述的热电偶熄火保护针5为已有公知技术，在本实施例中不作赘述。
所述的多孔陶瓷板燃烧器2与锅底之间的距离由锅底支架8保持在10毫米以内。
所述的盘绕型双层间壁式回热器13的外表面贴覆防火保温材料，可确保热量不被释放到空气中。
所述的燃气灶壳体28为长方形体，其顶面中部有一圆孔环，该圆孔直径大于升降密封锅架圈9的直径。
所述的开孔耐高温玻璃面板29为长方形板体，其长宽尺寸与燃气灶壳体28的长宽尺寸相同，其中部开有一圆孔，该圆孔直径大于升降密封锅架圈9的直径，开孔耐高温玻璃面板29可避免使用者不被烫伤，杜绝了安全隐患。
所述的多孔陶瓷板燃烧器2设在燃气灶主体的保温燃烧腔1内，该多孔陶瓷板燃烧器2的底端设有多孔陶瓷板燃烧器的混合燃气进气口3，空气燃气全预混管11的出气端穿过保温燃烧腔1底部伸入多孔陶瓷板燃烧器2内。
所述排气管27的一端连接在盘绕型双层间壁式回热器13端部的废气出口17处，其另一端连通室外，废气能完全排出厨房，从而提供了更加舒适、健康的厨房烹饪环境。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何本技术领域的普通技术人员在本发明所述的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。

Claims (10)

  1. 一种具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于，所述的节能环保燃气灶包括：保温燃烧腔(1)，多孔陶瓷板燃烧器(2)，多孔陶瓷板燃烧器的混合燃气进气口(3)，点火针(4)，热电偶熄火保护针(5)，烟气口(6)，烟气管(7)，锅底支架(8)，升降密封锅架圈(9)，升降密封锅架圈弹簧(10)，空气燃气全预混管(11)，燃气喷嘴(12)，盘绕型双层间壁式回热器(13)，盘绕型双层间壁式回热器的空气进口(14)，盘绕型双层间壁式回热器的空气出口(15)，盘绕型双层间壁式回热器的废气进口(16)，盘绕型双层间壁式回热器的废气出口(17)，助燃鼓风机(18)，燃气进气管(19)，燃气进气电磁阀(20)，燃气调节阀(21)，燃气管(22)，点火器(23)，电源插口(24)，电路控制模块(25)，总电源开关(26)，排气管(27)，燃气灶壳体(28)，开孔耐高温玻璃面板(29)和升降密封锅架圈定位栓(30)；由锅具、保温燃烧腔(1)和升降密封锅架圈(9)形成封闭式燃烧腔，以完成加热后的高温废气在助燃鼓风机(18)的强制通风作用下由烟气口(6)排入烟气管(7)，再排入盘绕型双层间壁式回热器(13)的废气通道进行放热降温；由助燃鼓风机(18)强制排入的反向流动的常温空气进入已升温的盘绕型双层间壁式回热器(13)的空气通道管内进行流动换热升温；废气由连通室外的排气管(27)全部排出厨房。
  2. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的保温燃烧腔(1)为上开口外翻边圆筒形，固定安装在燃气灶壳体(28)上部的圆孔中；并且，在上开口外翻边圈上设有与底部的弹簧支柱相对应的平均辐射分布的至少4个圆定位孔。
  3. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的升降密封锅架圈(9)为上下开口的圆筒形，上开口为外翻边，下开口为内翻边，在上翻边部位固定安装有按圆心平均辐射对称分布的至少4个圆柱形的升降密封锅架圈定位栓(30)，且保温燃烧腔(1)与升降密封锅架圈(9)保持间隙配合。
  4. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的锅底支架(8)设置在所述多孔陶瓷板燃烧器(2)上，是按圆心平均辐射对称分布的至少4根L形支柱。
  5. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的烟气管(7)为矩形结构，设置在保温燃烧腔(1)的底部，在所述的烟气管(7)的上部开有2个孔，其中1个孔连接烟气口(6)，另1个孔连接盘绕型双层间壁式回热器的废气进口(16)。
  6. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的空气燃气全预混管(11)为矩形结构，设置在保温燃烧腔(1)的下部，在所述的空气燃气全预混管(11)的上部开有2个孔，其中1个孔与多孔陶瓷板燃烧器的混合燃气进气口(3)连接，另1个孔与盘绕型间壁式双层回热器的空气出口(15)相连接。
  7. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的盘绕型双层间壁式回热器(13)固定安装在燃气灶壳体(28)上，具有由内圈以渐开形式延伸到外圈的盘绕形结构特征，且所述的盘绕型双层间壁式回热器盘绕设置在保温燃烧腔的外圈外侧并保持一定间隙。
  8. 根据权利要求7所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的盘绕型双层间壁式回热器(13)是由中间金属板层分隔成上层空气和下层废气的矩形双层通道结构，在上层空气通道的两个端部分别设有内圈端部的空气出口和外圈端部的空气进口，在下层废气通道的两个端部分别设有内圈端部的废气进口和外圈端部的废气出口；其中：位于上层空气通道内圈端部的空气出口(15)与空气燃气全预混管(11)连接，位于上层空气通道外圈端部的空气进口(14)与助燃鼓风机(18)的排风口连接，位于下层废气通道内圈端部的废气进口(16)与烟气管(7)连接，位于下层废气通道外圈端部的废气出口(17)与排气管(27)连接，形成空气流体与废气流体在各自通道内的相反逆向流动。
  9. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的燃气喷嘴(12)设置在空气燃气全预混管(11)的端部，并通过燃气管(22)与燃气调节阀(21)相连接。
  10. 根据权利要求1所述的具有盘绕型双层间壁式回热器的节能环保燃气灶，其特征在于：所述的多孔陶瓷板燃烧器(2)设在燃气灶主体的保温燃烧腔(1)内，在所述的多孔陶瓷板燃烧器(2)的底端设有与穿过保温燃烧腔(1)底部的空气燃气全预混管(11)的一端相连接的多孔陶瓷板燃烧器的混合燃气进气口(3)。
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