CN212869757U - Full premix combustor and gas heating water heater - Google Patents

Abstract

The utility model discloses a full premix burner, which comprises a hollow shell, wherein the surface of the shell is provided with a plurality of burning holes; the inner wall of the shell is provided with a heat conducting element, and the heat conducting element extends towards the inside of the shell; the bottom of the shell is provided with a connecting plate, the connecting plate is provided with an air inlet channel and a plurality of air inlet holes arranged around the air inlet channel, and the edges of the air inlet holes are provided with inclined guide plates. The utility model also discloses a gas heating water heater that adopts above-mentioned combustor. Through setting up the deflector at the inlet port edge, through deflector guide mist for inside the air current gets into the combustor with spiral rising mode, heats mist through heat-conducting element again, realizes that the combustor is stable, high-efficient, low emission ground burns.

Description

Full premix combustor and gas heating water heater

Technical Field

The utility model relates to a gas utensil field, in particular to combustor to and adopt the gas heating water heater of this combustor.

Background

At present, a cylindrical burner is commonly used in a gas hot water furnace, and the existing cylindrical burner generally adopts a full premix combustion mode, namely, gas and air are mixed in a mixer before combustion, the mixed gas is completely combusted in the burner, and the combustion temperature is high. However, the conventional can-type burner has the following problems: firstly, flame burns on the surface of the combustor, so that the thermal stress on the surface of the combustor is concentrated, tempering is easy to occur, and the service life of the combustor is shortened; secondly, when the mixed gas of low temperature got into the combustor and burns, combustion efficiency was low, appeared burning unstability easily, the exhaust gas emission subalternation problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a full premix combustor realizes that the combustor burns steadily, high-efficiently.

Furthermore, the utility model discloses still provide an use gas heating water heater that has above-mentioned full premix combustor.

The utility model provides a full premix burner, which comprises a hollow shell, wherein the surface of the shell is provided with a plurality of burning holes; the inner wall of the shell is provided with a heat conducting element, and the heat conducting element extends towards the inside of the shell; the bottom of the shell is provided with a connecting plate, the connecting plate is provided with an air inlet channel and a plurality of air inlet holes arranged around the air inlet channel, and the edges of the air inlet holes are provided with inclined guide plates.

According to the utility model provides a full premix combustor has following beneficial effect at least: the mixed gas of the fuel gas and the air enters the combustor shell from the air inlet channel and the air inlet hole of the connecting plate at the bottom of the combustor shell. The edge of the air inlet is provided with the guide plate, the guide plate guides airflow, so that the airflow enters the inner wall surface of the combustor in a spiral ascending mode, the airflow guided by the guide plate can collide with the central air column entering through the air inlet channel to generate cross turbulence, a sufficient turbulence field is formed, and the mixing effect of the airflow is better. In addition, the heat conducting element is additionally arranged in the shell of the combustor, after combustion, the heat accumulated on the surface of the combustor can be partially conducted to the heat conducting element, so that the thermal stress is prevented from being excessively concentrated on the surface of the combustor, and the service life of the combustor is prolonged; the heat is also transferred to the mixed gas in the shell through the heat conducting element, so that the mixed gas is preheated, and the burner can burn stably, efficiently and low in emission; in addition, heat-conducting element still can cause the vortex to the mixed gas of conveying inside the casing to casing inside extension, makes the mixture of gas and air more abundant, and the burning is more abundant, reduces oxynitride's emission.

Furthermore, the deflector fixed connection in on the connecting plate, the deflector with the fixed connection department of connecting plate is located intake passage's radial extension line, the deflector is at 30 degrees to 55 degrees with the contained angle of connecting plate.

Furthermore, the heat conducting element comprises a ring body and a plurality of fins, and the ring body is fixedly arranged on the inner wall of the shell; the plurality of fins are circumferentially and annularly distributed on the ring body, and extend towards the inside of the shell.

Further, the heat conducting element is provided with one or more.

Further, when the heat conducting elements are provided with a plurality of heat conducting elements, the ring bodies are sequentially embedded in the inner wall of the shell, and the fins on the two adjacent heat conducting elements are distributed in a staggered mode. The fins on the adjacent heat conducting elements are distributed in a staggered mode, heat accumulation is avoided, and fin turbulence effect is further improved.

Further, a torsion structure is arranged on the fin. The surface area of the fin is increased through the torsion structure, heat dissipation is accelerated, and meanwhile the fin turbulence effect of the torsion structure is better.

Further, an end cover is arranged at the top of the shell.

Furthermore, a plurality of bulges are uniformly arranged on the surface of the shell, and the combustion holes are distributed on the surfaces of the bulges.

The utility model also provides a gas heating water heater, it includes foretell full premix burner, has consequently also possessed the beneficial effect that full premix burner brought, no longer gives details here.

Drawings

FIG. 1 is a schematic structural diagram of a fully premixed burner of the present invention;

FIG. 2 is a sectional view of the fully premixed burner of the present invention;

FIG. 3 is a schematic structural diagram of the heat conducting element of the present invention;

FIG. 4 is a schematic structural view of the connecting plate of the present invention;

the reference numbers illustrate: the combustion chamber comprises a shell 1, combustion holes 2, a heat conducting element 3, a connecting plate 4, a ring body 31, fins 32, an air inlet channel 41, air inlet holes 42 and a guide plate 43.

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.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, and a plurality of means are two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The full premix burner as shown in fig. 1 to 4 comprises a hollow shell 1, wherein a plurality of combustion holes 2 are arranged on the surface of the shell 1; the inner wall of the shell 1 is provided with a heat conducting element 3, and the heat conducting element 3 extends towards the inside of the shell 1; the bottom of the shell 1 is provided with a connecting plate 4, the connecting plate 4 is provided with an air inlet channel 41 and a plurality of air inlet holes 42 arranged around the air inlet channel 41, and the edges of the air inlet holes 42 are provided with inclined guide plates 43. Specifically, the guide plate 43 is fixedly connected to the connecting plate 4, the fixed connection position of the guide plate 43 and the connecting plate 4 is located on a radial extension line of the air inlet channel 41, and an included angle between the guide plate 43 and the connecting plate 4 is 45 degrees. The heat conducting element 3 comprises a ring body 31 and a plurality of fins 32, and the ring body 31 is fixedly arranged on the inner wall of the shell 1; a plurality of fins 32 are circumferentially and annularly distributed on the ring body 31, and the fins 32 extend towards the inside of the shell 1. Specifically, the heat conducting elements 3 are provided with a plurality of heat conducting elements, the ring bodies 31 are sequentially embedded in the inner wall of the shell 1, and the fins 32 on two adjacent heat conducting elements 3 are distributed in a staggered manner. The fins 32 on the adjacent heat conducting elements 3 are distributed in a staggered manner, so that heat accumulation is avoided, and the turbulence effect of the fins 32 is further improved. Specifically, be provided with the structure of twisting on the fin 32, increase the surface area of fin 32 through twisting the structure for heat gives off, and the fin 32 vortex effect that twists the structure simultaneously is better. The top of casing 1 is provided with the end cover and the casing 1 surface evenly is provided with a plurality of archs, burner ports 2 distribute in bellied surface.

The embodiment also provides a gas heating water heater using the fully premixed burner.

In the fully premixed burner and the gas heating water heater using the same, the mixed gas of gas and air enters the burner housing 1 from the air inlet channel 41 and the air inlet hole 42 of the connecting plate 4 at the bottom of the burner housing 1. The edge of the air inlet 42 is provided with the guide plate 43, the air flow is guided by the guide plate 43, so that the air flow enters the inner wall surface of the combustor in a spiral ascending mode, the air flow guided by the guide plate 43 can collide with the central air column entering through the air inlet channel 41 to be crossly disturbed, a sufficient turbulent flow field is formed, and the mixing effect of the air flow is better. In addition, the heat conducting element 3 is additionally arranged in the shell 1 of the combustor, after combustion, part of heat accumulated on the surface of the combustor can be conducted to the heat conducting element 3, so that the thermal stress is prevented from being excessively concentrated on the surface of the combustor, and the service life of the combustor is prolonged; the heat is also transferred to the mixed gas in the shell 1 through the heat conducting element 3, so that the mixed gas is preheated, and the burner can burn stably, efficiently and low in emission; in addition, heat-conducting element 3 still can cause the vortex to the mixed gas of carrying in casing 1 is inside to extend, makes the mixture of gas and air more abundant, and the burning is more abundant, reduces oxynitride's emission.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A fully premixed burner comprising a hollow casing (1), characterized in that:

the surface of the shell (1) is provided with a plurality of combustion holes (2);

a heat conducting element (3) is arranged on the inner wall of the shell (1), and the heat conducting element (3) extends towards the inside of the shell (1);

the air inlet structure is characterized in that a connecting plate (4) is arranged at the bottom of the shell (1), an air inlet channel (41) and a plurality of air inlet holes (42) arranged around the air inlet channel (41) are formed in the connecting plate (4), and an inclined guide plate (43) is arranged at the edge of each air inlet hole (42).

2. The fully premixed combustor of claim 1, wherein: the guide plate (43) is fixedly connected to the connecting plate (4), and the fixed connection position of the guide plate (43) and the connecting plate (4) is located on a radial extension line of the air inlet channel (41).

3. The fully premixed combustor of claim 1, wherein: the included angle between the guide plate (43) and the connecting plate (4) is 30-55 degrees.

4. The fully premixed combustor of claim 1, wherein: the heat-conducting element (3) comprises:

the ring body (31) is fixedly arranged on the inner wall of the shell (1);

the fins (32) are circumferentially and annularly distributed on the ring body (31), and the fins (32) extend towards the inside of the shell (1).

5. The fully premixed combustor of claim 4, wherein: the heat-conducting element (3) is provided with one or more.

6. The fully premixed combustor of claim 5, wherein: when the heat conducting elements (3) are arranged in a plurality of modes, the ring bodies (31) are sequentially embedded in the inner wall of the shell (1), and the fins (32) on the heat conducting elements (3) are distributed in a staggered mode.

7. The fully premixed combustor of claim 4, wherein: the fin (32) is provided with a torsion structure.

8. The fully premixed combustor of claim 1, wherein: an end cover is arranged at the top of the shell (1).

9. The fully premixed combustor of claim 1, wherein: the surface of the shell (1) is uniformly provided with a plurality of bulges, and the combustion holes (2) are distributed on the surfaces of the bulges.

10. A gas-fired heating water heater comprising the fully premixed burner as claimed in any one of claims 1 to 9.

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