CN212537830U - Full-premixing heat exchange combustion system and combustion heat equipment - Google Patents
Full-premixing heat exchange combustion system and combustion heat equipment Download PDFInfo
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- CN212537830U CN212537830U CN202021303668.0U CN202021303668U CN212537830U CN 212537830 U CN212537830 U CN 212537830U CN 202021303668 U CN202021303668 U CN 202021303668U CN 212537830 U CN212537830 U CN 212537830U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model provides a full premix heat exchange combustion system and a combustion heat device, which comprises an outer shell, a burner arranged in the outer shell, and a heat exchanger circumferentially arranged along the outer side of the burner; the combustor comprises a hollow shell, wherein the surface of the hollow shell is provided with a plurality of combustion holes, the inner wall of the hollow shell is provided with a heat conducting element, and the heat conducting element extends towards the inside of the hollow shell; the heat exchanger comprises a flue outer baffle assembly, a flue middle baffle and a heat exchange tube; the outer flue baffle assembly and the middle flue baffle enclose together to form a U-shaped heat exchange channel; the heat exchange tube is arranged in the U-shaped heat exchange channel. The utility model discloses heat transfer performance has been optimized greatly.
Description
Technical Field
The utility model relates to a fire hot technical field especially relates to a full premix heat transfer combustion system and fire hot equipment.
Background
The combustor is generally applied to full premix heat exchange gas equipment, and gas and air are mixed for combustion before combustion, so that the combustion temperature is high. In the full premix heat transfer gas equipment of traditional technique, the combustion efficiency of combustor is not high, takes place the tempering easily to can appear burning unstability scheduling problem when low temperature air mixes with the gas entering burning. Therefore, in the prior art, the structure of most of fully premixed heat exchange gas equipment and the efficiency of realizing condensation heat exchange by utilizing high-temperature flue gas output by the combustor have larger improvement and perfect space.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at overcoming not enough among the prior art, provide a full premix heat transfer combustion system and heat equipment that fires.
The utility model provides a full premix heat exchange combustion system, which comprises an outer shell, a burner arranged in the outer shell, and a heat exchanger circumferentially arranged along the outer side of the burner;
the combustor comprises a hollow shell, wherein the surface of the hollow shell is provided with a plurality of combustion holes, the inner wall of the hollow shell is provided with a heat conducting element, and the heat conducting element extends towards the inside of the hollow shell;
the heat exchanger comprises a flue outer baffle assembly, a flue middle baffle and a heat exchange tube; the outer flue baffle assembly and the middle flue baffle enclose together to form a U-shaped heat exchange channel; the heat exchange 3 is arranged in the U-shaped heat exchange channel.
In one embodiment, the heat conducting element comprises a ring body arranged on the inner wall of the hollow shell and a plurality of fins arranged on the ring body;
the fins extend towards the interior of the hollow shell.
In one embodiment, the fins are helical in configuration.
In one embodiment, the adjacent heat conducting elements are arranged at a predetermined spacing distance, and the fins on the adjacent heat conducting elements are distributed in a staggered manner.
In one embodiment, the heat exchange tubes comprise a first heat exchange tube and a second heat exchange tube;
the U-shaped heat exchange channel comprises an inlet section, an outlet section and a turning section which is respectively connected with one end of the inlet section and one end of the outlet section; the inlet section is arranged close to the combustor; the outlet section is arranged close to the outer shell; the first heat exchange tube is arranged at the inlet section; the second heat exchange tube is arranged at the outlet section.
In one embodiment, the first heat exchange tube is a finned tube; the second heat exchange tube is a corrugated tube.
In one embodiment, one end of the first heat exchange pipe is provided with a water outlet, and the other end of the first heat exchange pipe is provided with a transit water inlet; one end of the second heat exchange pipe is provided with a water inlet, and the other end of the second heat exchange pipe is provided with a transfer water outlet; the transfer water inlet is communicated with the transfer water outlet through a transfer joint.
In one embodiment, the outer flue baffle assembly is of a U-shaped structure and comprises a direction changing plate, a first baffle close to the outer shell and a second baffle close to the combustor; the flue intermediate baffle 32 includes side surfaces and a bottom surface connecting the side surfaces;
the turning plate is respectively connected with one end of the first baffle plate and one end of the second baffle plate; the side surfaces of the first baffle, the second baffle and the flue middle baffle are arranged along the side length direction of the hollow shell; the side surface of the middle baffle plate of the flue is arranged between the first baffle plate and the second baffle plate; the bottom surface of the middle baffle plate of the flue is positioned at a preset distance between the other end of the first baffle plate and the other end of the second baffle plate.
In one embodiment, a fully premixed recuperated combustion system is included.
In one embodiment, the heat-burning device is a gas water heater, a wall-hanging stove or a boiler.
The embodiment of the utility model has the following advantage:
the embodiment of the utility model provides a full premix heat transfer combustion system and fire thermal equipment, including setting up the combustor in the casingAnd a heat exchanger. The burner includes a heat conducting element disposed on an inner wall of the hollow housing and extending inwardly of the hollow housing. Thereby the heat accessible burner port when combustor surface burning preheats the gas mixture that gets into in the hollow shell along heat-conducting element, and then can reduce the surface thermal stress concentration degree of combustor. Meanwhile, the heat exchanger comprises a flue outer baffle assembly, a flue middle baffle and a heat exchange tube; the outer flue baffle assembly and the middle flue baffle enclose together to form a U-shaped heat exchange channel; the heat exchange tube is arranged in the U-shaped heat exchange channel. Furthermore, high-temperature flue gas output by the combustor can flow along the U-shaped heat exchange channel to be condensed and exchanged with the heat exchange tube, so that the high-temperature flue gas is guided to be concentrated, the flue gas is in full contact with the heat exchange tube, and the heat exchange performance is greatly optimized. The utility model discloses full premix heat transfer combustion system and fire thermal equipment of each embodiment can effectively prolong the life-span of system, reaches comparatively abundant burning in order to reduce NOXDischarging, and can fully utilize the high-temperature flue gas of the combustor to strengthen the heat exchange effect of the aqueous solution and the flue gas.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic cross-sectional view of a fully premixed heat exchange combustion system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a flue damper structure of a fully premixed heat exchange combustion system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure of a combustor of a fully premixed heat exchange combustion system according to an embodiment of the present invention;
FIG. 4 is a schematic view of another internal structure of a combustor of a fully premixed heat exchange combustion system according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a fully premixed heat exchange combustion system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the structure of a heat exchange tube in a fully premixed heat exchange combustion system according to an embodiment of the present invention;
fig. 7 shows another schematic cross-sectional structure diagram of a fully premixed heat exchange combustion system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, in one embodiment, the present invention provides a full premix heat exchange combustion system, which includes an outer casing 11, a burner 2 disposed in the outer casing 11, and a heat exchanger 3 circumferentially disposed along an outer side of the burner 2.
The burner 2 comprises a hollow shell 21, a plurality of burning holes 22 are arranged on the surface of the hollow shell 21, a heat conducting element 23 is arranged on the inner wall of the hollow shell 21, and the heat conducting element 23 extends towards the inside of the hollow shell 21.
The heat exchanger 3 comprises an outer flue baffle assembly 31, a middle flue baffle 32 and a heat exchange pipe 33; the outer flue baffle assembly 31 and the middle flue baffle 32 enclose together to form a U-shaped heat exchange channel; the heat exchange tubes 33 are disposed in the U-shaped heat exchange channels.
The outer shell 11 may be made of aluminum or other high temperature and corrosion resistant engineering plastic materials. The material of the outer flue baffle assembly 31 and the middle flue baffle 32 is a suitable high temperature and corrosion resistant stainless steel material, or other materials with similar properties. The heat conducting element 23 may be made of copper, or may be made of other materials with high temperature resistance and good thermal conductivity.
When the burner 2 is in operation, the mixed gas enters the interior of the hollow housing 21 and flows out through the combustion holes 22, so that the flame is burned on the surface of the burner 2. At this time, heat generated by the surface combustion of the burner 2 can be transferred to the heat transfer member 23 through the combustion hole 22 and the hollow housing 21. Since the heat conducting element 23 extends toward the inside of the hollow casing 21, heat can be transferred to the mixed gas in the hollow casing 21 through the heat conducting element 23, and the entering mixed gas can be preheated.
The utility model discloses full premix heat transfer combustion system, the heat conduction component 23 to the inside extension of cavity casing 21 in combustor 2 can make the gas fully stir with the air and scatter and mix, and can absorb the partial heat on 2 surfaces of combustor, dispel the heat in cavity casing 21 to absorbent heat, has promoted the temperature of gas mixture to reinforcing combustion efficiency. Further, since a part of the heat on the surface of the burner 2 can be used to preheat the mixed gas through the heat conducting element 23, the temperature on the surface of the burner 2 can be reduced. Particularly, the problem that the combustion efficiency is low and unstable when low-temperature mixed gas is combusted can be effectively prevented.
Further, the heat exchanger 3 includes a flue outer baffle assembly 31, a flue intermediate baffle 32, and heat exchange tubes 33; the outer flue baffle assembly 31 and the middle flue baffle 32 enclose together to form a U-shaped heat exchange channel; the heat exchange tubes 33 are disposed in the U-shaped heat exchange channels. As shown in fig. 2, for example, the outer flue baffle assembly 31 includes a first cylinder 31a, a second cylinder 31b disposed at an outer periphery of the first cylinder 31a, and a hollow bottom surface 31c connecting one ends of the first cylinder 31a and the second cylinder 31b, and the burner 2 may be disposed in the first cylinder 31a through the hollow bottom surface 31 c; the flue intermediate baffle 32 is a hollow circular truncated cone, for example. The middle flue baffle 32 is located at a side far from the hollow bottom surface 31c of the outer flue baffle assembly 31, the side surface 32a of the middle flue baffle 32 is arranged between the side surfaces of the first cylinder 31a and the second cylinder 31b, and the bottom surface 32b of the middle flue baffle 32 is at a predetermined distance from the other ends of the first cylinder 31a and the second cylinder 31b, so that the outer flue baffle assembly 31 and the middle flue baffle 32 can enclose a U-shaped heat exchange channel (a flue gas flow channel as shown by an arrow in fig. 1). The heat exchange tubes 33 may be disposed in the branch channels of the U-shaped heat exchange channel, such as between the side of the first cylinder 31a and the side 32a of the intermediate baffle, and between the side of the second cylinder 31b and the side 32a of the intermediate baffle, respectively.
In the heat exchange process, the high-temperature flue gas is output from one end of the hollow shell 21 of the burner 2, enters one end of a channel (a channel shown by an arrow 20 in fig. 1) formed by the flue outer baffle plate assembly 31 and the flue middle baffle plate 32, and then flows along the channel to exchange heat with a heat exchange working medium such as an aqueous solution in the heat exchange tubes 33 in the channel. At this time, after most of the heat of the high-temperature flue gas exchanges heat with the heat exchange tube 33, the flue gas is output from the other end of the channel to enter one end of another channel (a channel shown by an arrow 10 in fig. 1) formed by the flue outer baffle plate assembly 31 and the flue middle baffle plate 32, then flows along the channel to exchange heat with the heat exchange working medium in the heat exchange tube 33 in the channel, and then is output from the other end of the channel to the smoke outlet of the outer shell 11. The embodiment of the utility model provides a structure is comparatively perfect, can effectively utilize the flue gas of 2 exports of combustor to realize the condensation heat transfer of high energy efficiency. The solution and the flue gas in the heat exchange tube 33 in the whole heat exchange process can be ensured to be subjected to sufficient cross and counter-convection heat exchange, a stable heat exchange gradient is favorably maintained, and the heat exchange is carried out on the working medium inside and outside the heat exchange tube 33 in a large temperature difference convection environment.
The utility model discloses full premix heat transfer combustion system, including setting up combustor 2 and the heat exchanger 3 in the casing. The burner 2 comprises a heat-conducting element 23 arranged on the inner wall of the hollow housing 21 and extending towards the interior of the hollow housing 21. So that the heat generated when the surface of the burner 2 is burned can preheat the mixed gas entering the hollow housing 21 along the heat conducting element 23 through the combustion hole 22, thereby reducing the concentration of the surface thermal stress of the burner 2. Meanwhile, the heat exchanger 3 includes an outer flue baffle assembly 31, a middle flue baffle 32 and a heat exchange pipe 33; the outer flue baffle assembly 31 and the middle flue baffle 32 enclose together to form a U-shaped heat exchange channel; the heat exchange tubes 33 are disposed in the U-shaped heat exchange channels. Furthermore, high-temperature flue gas output by the combustor 2 can flow along the U-shaped heat exchange channel to be condensed and exchanged with the heat exchange tube 33, so that the high-temperature flue gas is guided to be concentrated, the flue gas is in full contact with the heat exchange tube 33, and the heat exchange performance is greatly optimized. The utility model discloses full premix heat transfer combustion system can effectively extend systemTo achieve more complete combustion for NO reductionXDischarging, and can fully utilize the high-temperature flue gas of the combustor 2 to strengthen the heat exchange effect of the aqueous solution and the flue gas.
Referring to fig. 3, in a specific embodiment, the heat conducting element 23 includes a ring body 231 disposed on the inner wall of the hollow housing 21, and a plurality of fins 232 disposed on the ring body 231.
The fins 232 extend toward the interior of the hollow housing 21.
The fins 232 are annularly distributed along the ring body 231, and each heat conducting element 23 can be embedded on the inner wall of the hollow housing 21. For example, each heat conducting element 23 may be disposed on the head inner surface of the hollow housing 21.
The utility model discloses full premix heat transfer combustion system, surface heat can conduct when 2 combustors of being convenient for on heat-conducting element 23 to dispel the heat on fin 232, pass the mixed gas in the cavity to the heat, and then when fin 232 through heat-conducting element 23 makes gas and air intensive mixing, can play the effect of preheating to mixed gas. Can promote the temperature of mixed gas itself to strengthen burning intensity, promote combustion efficiency, reduce the temperature on 2 surfaces of combustor, can effectively alleviate the problem of thermal stress concentration, increase of service life.
In one particular embodiment, fins 232 are helical in configuration.
The utility model discloses full premix heat transfer combustion system, fin 232 can be helical structure, and multiplicable fin 232's surface area accelerates the heat to give off. Meanwhile, the mixing effect of the fuel gas and the air is improved, the mixed fuel gas is favorably circulated in the hollow cavity, and the heat conduction effect is further enhanced by the contact with the fins 232.
Referring to fig. 4, in a specific embodiment, the adjacent heat conducting elements 23 are disposed at a predetermined interval, and the fins 232 of the adjacent heat conducting elements 23 are distributed in a staggered manner.
The utility model discloses full premix heat transfer combustion system more is favorable to mixing the gas to heat transfer for mix the gas fully with the fin 232 contact of heat-conducting element 23, further improve gas mixing and preheat the effect.
Referring to fig. 5, 6 and 7, in one particular embodiment, the heat exchange tube 33 includes a first heat exchange tube 331 and a second heat exchange tube 332.
The U-shaped heat exchange channel comprises an inlet section 41, an outlet section 42 and a direction changing section 43 which is respectively connected with one end of the inlet section 41 and one end of the outlet section 42; the inlet section 41 is arranged close to the burner 2; the outlet section 42 is disposed adjacent the outer shell 11; the first heat exchange pipe 331 is disposed at the inlet section 41; a second heat exchange tube 332 is disposed at the outlet section 42.
For example, the second heat exchanging pipe 332 may be disposed at the outer circumference of the first heat exchanging pipe 331, and the first heat exchanging pipe 331 is disposed at the outer circumference of the burner 2. Flue gas output by the combustor 2 enters from the inlet section 41 to the outlet section 42 through the diversion section 43, namely, high-temperature flue gas generated by the combustor 2 transfers heat to the heat exchange tube 33 through the U-shaped heat exchange channel so as to exchange heat with the water solution in the heat exchange tube 33. For example, the high-temperature flue gas passes through the inlet section 41 where the first heat exchange tube 331 is located, passes through the turning section 43, and then enters the outlet section 42 where the second heat exchange tube 332 is located, and after the flue gas exchanges heat with the aqueous solution in the first heat exchange tube 331, the flue gas exchanges heat with the aqueous solution in the second heat exchange tube 332 again, so that the residual heat of the flue gas is absorbed by the water entering the second heat exchange tube 332, and the effect of fully utilizing the residual heat is achieved.
The utility model discloses full premix heat transfer combustion system, the structure is comparatively perfect, can be so that flue gas of 2 exports of combustor fully contact with each heat exchange tube 33 in the heat exchanger 3, heat utilization rate and heat conversion rate are higher.
In a specific embodiment, the first heat exchange tube 331 is a finned tube; the second heat exchange tube 332 is a bellows tube.
The utility model discloses full premix heat transfer combustion system, first heat exchange tube 331 can increase heated area for the finned tube and help improving heat exchange efficiency. The second heat exchange tube 332 is a corrugated tube, the surface of the corrugated tube is not easy to scale and block, the condensation enhanced heat exchange effect is good, and the condensation heat exchange efficiency can be effectively improved. The embodiment of the utility model provides a structure is comparatively perfect, can effectively utilize 2 output flue gases of combustor to realize the condensation heat transfer of high energy efficiency, can improve the life of system simultaneously.
Referring to fig. 6, in a specific embodiment, one end of the first heat exchanging pipe 331 is provided with a water outlet 334, and the other end is provided with a transit water inlet; one end of the second heat exchange pipe 332 is provided with a water inlet 335, and the other end is provided with a transfer water outlet; the transfer water inlet is communicated with the transfer water outlet through a transfer joint 333.
The heat exchange working medium such as an aqueous solution can enter from the water inlet 335 of the second heat exchange tube 332 to exchange heat with the flue gas, then flow into the transfer water inlet through the transfer water outlet to enter the first heat exchange tube 331 to exchange heat with the flue gas again, and then flow out from the water outlet 334 of the first heat exchange tube 331.
The utility model discloses full premix heat transfer combustion system, the structure is comparatively perfect, can effectively utilize the flue gas of 2 outputs of combustor to realize the condensation heat transfer of high energy efficiency. The water solution and the flue gas in the heat exchange tube 33 in the whole heat exchange process can be ensured to be subjected to sufficient cross and counter-convection heat exchange, a stable heat exchange gradient is favorably maintained, and the internal and external working media in the heat exchange tube 33 can exchange heat in a large-temperature-difference convection environment.
Referring to FIG. 7, in one particular embodiment, the outer flue baffle assembly 31 is a U-shaped structure including a deflector 313, a first baffle 311 adjacent the outer shell 11, and a second baffle 312 adjacent the burner 2; middle flue baffle 32 includes a side 322 and a bottom 321 connecting side 322.
The direction changing plate 313 is respectively connected with one ends of the first baffle 311 and the second baffle 312; the first baffle 311, the second baffle 312 and the side 322 of the flue intermediate baffle 32 are arranged along the side length direction of the hollow shell 21; side 322 of flue intermediate baffle 32 is disposed between first baffle 311 and second baffle 312; the bottom surface 321 of the middle flue damper 32 is located at a predetermined distance between the other end of the first damper 311 and the other end of the second damper 312.
In the embodiment of the present invention, the direction changing plate 313 is connected to one end of the first baffle 311 and one end of the second baffle 312 respectively to form a U-shaped structure. For example, the first baffle 311 and the second baffle 312 are hollow cylinders, the first baffle 311 is disposed along the outer circumference of the second baffle 312, and the direction changing plate 313 is connected to one end of the first baffle 311 and one end of the second baffle 312, so that the outer flue baffle assembly 31 having a U-shaped structure can be formed. Further, a side 322 of the middle flue baffle 32 is disposed between the first baffle 311 and the second baffle 312, and a bottom 321 of the middle flue baffle 32 is located at a predetermined distance from the other end of the first baffle 311 to the other end of the second baffle 312, so that the outer flue baffle assembly 31 and the middle flue baffle 32 can enclose to form a U-shaped heat exchange channel. The direction changing plate 313 may be a direction changing plate of 180 degrees or a direction changing plate with a designated radian.
In the heat exchange, the high-temperature flue gas is output from one end of the hollow casing 21 of the burner 2 into one end of a channel formed by the second baffle 312 and the side 322 of the flue intermediate baffle 32, and then flows along the channel to exchange heat with a heat exchange medium such as an aqueous solution in the heat exchange tube 331. After most of heat of the high-temperature flue gas exchanges heat with the heat exchange tube 331, the flue gas is output from the other end of the channel, enters one end of the channel formed by the first baffle 311 and the side 322 of the flue middle baffle 32 through the turning plate 313, then exchanges heat with the heat exchange working medium in the heat exchange tube 332 along the channel, and then the flue gas is output from the other end of the channel to the smoke outlet of the outer shell 11.
The utility model discloses full premix heat transfer combustion system, baffle 32 in the middle of the accessible flue is with the flue gas of 2 outputs of combustor centralized water conservancy diversion entering U type heat transfer passageway, can comparatively concentrate in advance with the flue gas lead the passageway that forms in the middle of second baffle 312 and the flue side 322 of baffle 32 for the flue gas gets into another passageway that first baffle 311 and middle baffle 32's side 322 formed along this passageway. The embodiment of the utility model provides a structure is comparatively perfect, has further improved the effect of concentrating the water conservancy diversion to high temperature flue gas, helps flue gas and heat exchange tube 33 fully to contact, has optimized heat transfer performance greatly.
In one embodiment, the utility model also provides a heat of combustion equipment, including the heat transfer combustion system is mixed in advance completely.
The utility model discloses heat equipment can but not be limited to for gas heater, hanging stove, boiler etc..
It should be noted that, the limitation description of the fully premixed heat exchange combustion system in the embodiment of the present invention can refer to the limitation description of the fully premixed heat exchange combustion system, and is not repeated herein.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. The utility model provides a full premix heat transfer combustion system which characterized in that: the heat exchanger comprises an outer shell (11), a combustor (2) arranged in the outer shell (11), and a heat exchanger (3) arranged along the outer circumference of the combustor (2);
the combustor (2) comprises a hollow shell (21), a plurality of combustion holes (22) are formed in the surface of the hollow shell (21), a heat conducting element (23) is arranged on the inner wall of the hollow shell (21), and the heat conducting element (23) extends towards the inside of the hollow shell (21);
the heat exchanger (3) comprises an outer flue baffle assembly (31), a middle flue baffle (32) and a heat exchange pipe (33); the outer flue baffle assembly (31) and the middle flue baffle (32) enclose together to form a U-shaped heat exchange channel; the heat exchange tube (33) is arranged in the U-shaped heat exchange channel.
2. The fully premixed recuperative combustion system according to claim 1, characterized in that said heat conducting element (23) comprises an annular body (231) arranged on the inner wall of said hollow casing (21), and a plurality of fins (232) arranged on said annular body (231);
the fins (232) extend towards the inside of the hollow shell (21).
3. The fully premixed recuperated combustion system of claim 2, wherein the fins (232) are of a helical configuration.
4. The full-premix recuperated combustion system as recited in claim 2, characterized in that adjacent heat conducting elements (23) are arranged at a predetermined spacing distance, and the fins (232) on adjacent heat conducting elements (23) are staggered.
5. The fully premixed heat exchange combustion system according to claim 1, wherein the heat exchange tube (33) comprises a first heat exchange tube (331) and a second heat exchange tube (332);
the U-shaped heat exchange channel comprises an inlet section (41), an outlet section (42) and a direction changing section (43) which is respectively connected with one end of the inlet section (41) and one end of the outlet section (42); the inlet section (41) being arranged close to the burner (2); the outlet section (42) is arranged close to the outer shell (11); the first heat exchange tube (331) is arranged at the inlet section (41); the second heat exchange tube (332) is disposed at the outlet section (42).
6. The fully premixed heat exchange combustion system according to claim 5, wherein the first heat exchange tube (331) is a finned tube; the second heat exchange tube 332 is a corrugated tube.
7. The full-premix heat exchange combustion system as recited in claim 5, wherein one end of the first heat exchange tube (331) is provided with a water outlet (334), and the other end is provided with a transit water inlet; one end of the second heat exchange pipe (332) is provided with a water inlet (335), and the other end of the second heat exchange pipe is provided with a transfer water outlet; the transfer water inlet is communicated with the transfer water outlet through a transfer joint (333).
8. The full premix heat exchange combustion system of claim 1, wherein the outer flue baffle assembly (31) is a U-shaped structure comprising a deflector plate (313), a first baffle (311) adjacent to the outer casing (11), and a second baffle (312) adjacent to the combustor (2); the flue middle baffle (32) comprises a side surface (322) and a bottom surface (321) connected with the side surface (322);
the direction changing plate (313) is respectively connected with one end of the first baffle plate (311) and one end of the second baffle plate (312); the side surfaces (322) of the first baffle (311), the second baffle (312) and the flue middle baffle (32) are arranged along the side length direction of the hollow shell (21); a side (322) of the flue intermediate baffle (32) is disposed between the first baffle (311) and the second baffle (312); the bottom surface (321) of the flue intermediate baffle (32) is positioned at a predetermined distance between the other end of the first baffle (311) and the other end of the second baffle (312).
9. A heat-fired apparatus comprising a fully premixed heat exchange combustion system as claimed in any one of claims 1 to 8.
10. The heat combustion device according to claim 9, wherein the heat combustion device is a gas water heater, a wall-hanging stove, or a boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021303668.0U CN212537830U (en) | 2020-07-06 | 2020-07-06 | Full-premixing heat exchange combustion system and combustion heat equipment |
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| CN202021303668.0U CN212537830U (en) | 2020-07-06 | 2020-07-06 | Full-premixing heat exchange combustion system and combustion heat equipment |
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| CN212537830U true CN212537830U (en) | 2021-02-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161264A (en) * | 2020-07-06 | 2021-01-01 | 广东万和热能科技有限公司 | Full-premixing heat exchange combustion system and combustion heat equipment |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161264A (en) * | 2020-07-06 | 2021-01-01 | 广东万和热能科技有限公司 | Full-premixing heat exchange combustion system and combustion heat equipment |
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