CN110454779B

CN110454779B - Combustor and gas heater

Info

Publication number: CN110454779B
Application number: CN201810427440.3A
Authority: CN
Inventors: 孙连政; 许福海; 刘联产; 李键; 孙运磊
Original assignee: Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Current assignee: Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2022-10-18
Anticipated expiration: 2038-05-07
Also published as: CN110454779A

Abstract

The invention discloses a burner and a gas water heater, wherein the burner comprises a rear support and a plurality of fire rows supported on the rear support, fire holes are formed in the top of each fire row along the length direction, the burner also comprises a plurality of gas rows supported on the rear support, the gas rows and the fire rows are arranged in a staggered mode, gas outlets are formed in the tops of the gas rows, and gas inlets communicated with the gas outlets are formed in the bottoms or the side faces of the gas rows. According to the burner, the gas rows are arranged and are arranged in a staggered manner, the gas rows output air from both sides of each fire row, so that gas and air can be fully mixed, the heat exchange efficiency is improved, air blown out of the gas rows can be simultaneously supplied to the fire rows on both sides, and the heat loss caused by supplying a large amount of air is avoided.

Description

Combustor and gas heater

Technical Field

The invention relates to the technical field of gas water heaters, in particular to a burner and a gas water heater.

Background

The combustor is the combustion assembly of gas heater, and the combustor needs provide a certain amount of air just can guarantee the gas burning when burning, and under the prerequisite of air and gas misce bene, both can realize the gas abundant burning according to certain proportion, adopts the method of primary air coefficient and secondary air coefficient more in the actual combustion process, and primary air coefficient and secondary air coefficient are to the combustion effect's influence very big. The primary air coefficient is mainly achieved by that when fuel gas is sprayed out from a nozzle, partial air is sucked into a fire row, and the air sucked in the process is limited. The secondary air coefficient is that the secondary mixing is carried out with the gas by the outside air that provides, but the effect of secondary mixing is not good, because can't guarantee intensive mixing, needs the outside to provide a large amount of air, just can make the gas burn completely. When a large amount of air is provided outside, most of the air does not participate in combustion, but a large amount of heat is taken away, and the heat exchange efficiency of the gas water heater is reduced.

In addition, after air enters from the air holes during secondary mixing of air, due to the fact that the fire grate is uneven in surface, certain obstruction is generated on the air path, and noise is generated.

Disclosure of Invention

The invention provides a burner, which aims to solve the technical problems of insufficient mixing of air and fuel gas and low heat exchange efficiency of the existing burner.

In order to solve the technical problems, the invention adopts the following technical scheme:

a combustor comprises a rear support and a plurality of fire rows supported on the rear support, fire holes are formed in the top of each fire row along the length direction, the combustor further comprises a plurality of gas rows supported on the rear support, the gas rows and the fire rows are arranged in a staggered mode, gas outlets are formed in the tops of the gas rows, and gas inlets communicated with the gas outlets are formed in the bottoms or the side faces of the gas rows.

Furthermore, the rear support is step-shaped and comprises a first horizontal plate, a second horizontal plate and a vertical connecting plate connected between the first horizontal plate and the second horizontal plate, a notch matched with the step surface of the rear support is formed below the rear side of the gas bar, and the gas bar is clamped on the rear support through the notch.

Furthermore, the first horizontal plate is connected with the top edge of the vertical connecting plate, the second horizontal plate is connected with the bottom edge of the vertical connecting plate, and the air bar is clamped on the first horizontal plate and the connecting plate through the notch.

Further, the air inlet comprises a first air inlet positioned at the bottom of the air bar, the second horizontal plate is provided with a first through air hole, the bottom of the air bar is tightly attached to the second horizontal plate, the orthographic projection of the first air hole at the bottom of the air bar partially or completely falls into the first air inlet, and/or,

the air inlet is including being located the second air inlet of the last top surface of breach, set up the second gas pocket that link up on the first horizontal plate, the last top surface of breach with first horizontal plate closely laminates, the second gas pocket is in the orthographic projection part of the last top surface of breach or whole fall into in the second air inlet.

Furthermore, the bottom of the air bar extends downwards to form at least one first jaw, the second horizontal plate is provided with a first socket matched with the first jaw, the first jaw is inserted into the first socket, and/or,

the upper top surface of the notch extends downwards to form at least one second clamping jaw, a second socket matched with the second clamping jaw is formed in the first horizontal plate, and the second clamping jaw is inserted into the second socket.

Furthermore, the top of the air outlet is provided with an upper top surface protruding upwards, and the air outlet is arranged along the length direction of the upper top surface.

Furthermore, the number of the air outlets is at least two, and the two air outlets are respectively positioned on two sides of the central axis of the upper top surface.

Furthermore, an air outlet is also distributed along the central axis of the upper top surface.

Furthermore, the first horizontal plate is connected with a rear baffle plate parallel to the vertical connecting plate, a plurality of fixing structures are formed on the upper end edge of the rear baffle plate, an inserting part is formed by protruding the rear side of the air exhaust, and the inserting part is fixed with the baffle plate through the fixing structures.

Based on the burner, the invention also provides a gas water heater, which comprises the burner.

Compared with the prior art, the invention has the advantages and positive effects that: according to the burner, the gas rows are arranged and are arranged in a staggered manner, the gas rows output air from both sides of each fire row, so that gas and air can be fully mixed, the heat exchange efficiency is improved, air blown out of the gas rows can be simultaneously supplied to the fire rows on both sides, and the heat loss caused by supplying a large amount of air is avoided.

Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a combustor proposed by the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic view of the rear bracket configuration of FIG. 1;

FIG. 4 is a schematic view of the gas panel configuration of FIG. 1;

FIG. 5 is a schematic side elevation view of the gas panel of FIG. 4;

fig. 6 is a schematic view of the front bracket structure in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The embodiment provides a burner, as shown in fig. 1, which includes a rear bracket 11 and a plurality of fire rows 12 supported on the rear bracket 11, fire holes 121 are formed at the top of each fire row 12 along the length direction, the burner further includes a plurality of gas rows 13 supported on the rear bracket 11, the gas rows 13 and the fire rows 12 are arranged in a staggered manner, gas outlets 131 are formed at the top of the gas rows 13, and gas inlets 132 communicated with the gas outlets 131 are formed at the bottom or the side of the gas rows 13. The inside airflow channel that can circulate air that has at least of gas outlet 13, the outside provides the air and gets into in the airflow channel of gas outlet through gas outlet's air inlet 132, then discharge through gas outlet 131 of gas outlet, because gas outlet 131 sets up at gas outlet's top, it is adjacent with the fire hole 121 that is located 12 tops of fire row, therefore, the air that discharges through gas outlet 131 flows to the top of fire hole 121, the gas for burning above fire hole 121 provides sufficient air, because gas outlet and fire row crisscross the laying, each fire row both sides all have a gas outlet 131 of gas outlet to provide the air for it, be favorable to air and gas homogeneous mixing, the abundant burning of gas has been guaranteed, and then heat exchange efficiency has been improved.

As shown in fig. 2, 3 and 4, in order to reduce the volume of the burner and fully utilize the space, the rear bracket 11 is step-shaped and comprises a first horizontal plate 111, a second horizontal plate 112 and a vertical connecting plate 113 connected between the first horizontal plate 111 and the second horizontal plate 112, a notch 133 matched with the step surface of the rear bracket is formed below the rear side of the gas row 13, and the gas row 13 is clamped on the rear bracket 11 through the notch 133. The gas row 13 is clamped on the rear support 11 through the notch, so that the contact area between the gas row 13 and the rear support 11 is increased, and the stability of supporting the gas row 13 is improved.

Have the gas import (angle reason is not shown in the figure) of input gas on the fire row 12, as shown in fig. 1, fig. 3, have on the back support with the gas import assorted gas mouth 116 on the fire row, the gas is in proper order through the gas mouth, during the gas import gets into fire row 12, discharge by fire hole 121 at last, burn in fire hole 121 top, when the gas got into fire row 12 through the gas mouth, can be drawn into some air, carry out preliminary mixing in fire row 12, this scheme provides the air through the gas row in fire row 12 top once more, be favorable to the homogeneous mixing.

As a preferred embodiment, the first horizontal plate 111 is connected to the top edge of the vertical connecting plate 113, the second horizontal plate 112 is connected to the bottom edge of the vertical connecting plate 113, and the air outlet 13 is clamped on the first horizontal plate 111 and the vertical connecting plate 113 through the notch 133. The notch 133 has an upper top surface 133a and a side surface 133b, the upper top surface 133a is tightly attached to the first horizontal plate 111, and the side surface 133b is tightly attached to the vertical connecting plate 113, so that the contact area between the air discharge duct 13 and the rear bracket 11 is increased.

As shown in fig. 3 and 4, in order to provide air to the air discharge, the air inlet 132 includes a first air inlet 132a located at the bottom of the air discharge 13, the second horizontal plate 112 is provided with a first air hole 1121, the bottom of the air discharge 13 is tightly attached to the second horizontal plate 112, a front projection of the first air hole 1121 at the bottom of the air discharge 13 partially or completely falls into the first air inlet 132a, and when in use, for example, a fan is disposed below the rear bracket 11, and blows air into an air flow channel of the air discharge through the first air hole 1121 and the first air inlet 132a in sequence, and finally blows the air out through the air outlet 131.

The air discharge 13 has a smooth air flow channel therein to guide the air flow to flow out smoothly, thereby reducing noise.

Alternatively, as shown in fig. 3 and 4, another implementation of supplying air to the air discharge is: the air inlet 132 comprises a second air inlet 132b positioned on the upper top surface 133a of the notch, the first horizontal plate 111 is provided with a through second air hole 1111, the upper top surface 133a of the notch is tightly attached to the first horizontal plate 111, and the orthographic projection of the second air hole 1111 on the upper top surface 133a of the notch partially or completely falls into the second air inlet 132 b. In use, for example, by providing a fan below the rear bracket 11, the fan blows air into the airflow path of the air outlet through the second air hole 1111 and the second air inlet 132b in sequence, and finally out through the air outlet 131.

Above-mentioned two kinds of schemes that provide the air to the gas row can optional one of them mode, also can set up two kinds of modes simultaneously, and when setting up two kinds of air feed modes simultaneously, the air that gets into the gas row is more even, is favorable to the homogeneity through the air that the gas row blew off, and then is more even when mixing with the gas, further improves combustion efficiency and heat exchange efficiency.

In order to improve the stability of the assembly of the air outlet 13 on the rear bracket 11, as shown in fig. 3 and 4, at least one first jaw 134 is formed by extending the bottom of the air outlet 13 downwards, a first socket 1122 matched with the first jaw 134 is formed on the second horizontal plate 112, the first jaw 134 is inserted into the first socket 1122, when the air outlet 13 is assembled on the rear bracket 11, the air outlet 13 is tightly attached to the step surface of the rear bracket 11 from the notch to the bottom plane, and by arranging the quick-connection structure of the first jaw 134 and the first socket 1122, the assembly is convenient, the production efficiency is improved, and meanwhile, the stability of the installation of the air outlet 13 on the rear bracket 11 is enhanced, in addition, the first jaw 134 is inserted into the first socket 1122, so that the air leakage from the first socket 1122 can be avoided by adopting an interference fit manner, and the efficiency of blowing air into the air outlet is improved.

Alternatively, another solution for fixing the air discharge duct to the rear bracket is: the upper top surface 133a of the notch 133 extends downwards to form at least one second jaw 135, the first horizontal plate 111 is provided with a second socket 1112 matched with the second jaw 135, and the second jaw 135 is inserted into the second socket 1112. This kind of fixed mode is similar with first kind fixed mode, and the position of setting up of jack catch is different, and above-mentioned two kinds of fixed modes can optionally one of them mode, also can set up two kinds of modes simultaneously, and when setting up two kinds of fixed modes simultaneously, the gas row is fixed steadiness on the after-poppet stronger.

Preferably, the top of the air discharge duct 13 has an upper top surface 136 protruding upward, and the air outlet 131 is disposed along the length direction of the upper top surface. The air outlet 131 may be a continuous slit extending along the length direction of the upper top surface 136, the slit-shaped air outlet may be one or more, the air outlet 131 may also be a plurality of independent air holes arranged in a row along the length direction of the upper top surface 136, and the air outlets arranged in the row may be one or more rows.

In order to improve the uniformity of mixing of air and fuel gas above the fire hole 121, the number of the air outlets 131 is at least two or two, when the air outlets 131 are in a gap shape, the number of the air outlets is at least two, as shown in fig. 5, the air outlets are respectively located on two sides of the central axis O of the upper top surface 136, when the air outlets 131 are arranged in a row shape, the number of the air outlets is at least two, the air outlets are respectively located on two sides of the central axis O of the upper top surface 136, and an included angle between the central axis of the air outlets and the central axis of the upper top surface 136 is an acute angle. As shown in the figure, the side projection profile of the convex upward top surface 136 can be an arc, a trapezoid, etc., preferably in an axial symmetry shape, and is located the both sides of the central axis of the top surface 136 through setting the air outlet 131, and the central axis of the air outlet is acute angle with the central axis included angle of the top surface 136, that is, the air outlet direction of the air outlet is acute angle with the included angle of the vertical plane, which is equivalent to the inclined air jet above the fire grate, the structure enables the jetted air and the fuel gas jetted from the fire holes to be mixed at a certain height above the fire holes, which is favorable for the sufficient combustion of the fuel gas. Because the gas row both sides have a fire respectively and arrange, through setting up two gas outlets, can arrange the slope respectively to the fire of both sides and jet-blast, jet-propelled directionality is more accurate, and every fire is arranged both sides and is had a gas row respectively and jet-propelled, and two way air penetrate the gas flow directly, strengthen the mixture of secondary air and gas, reduce the provision volume of secondary air, improve gas heater's heat exchange efficiency. Of course, only one side of the gas row at the most end part is provided with the fire row, and the gas outlet at the other side can be plugged, or the gas outlet is not formed at the other side.

Two sides of the fire grate are respectively provided with an air grate which slants to spray air to the upper part of the fire grate, so that the flames can be vertically and upwards burnt, and the burning direction of the flames can be prevented from being changed due to air spraying.

Can produce a large amount of flue gases during gas burning, in time discharge, as shown in fig. 5, still lay an air outlet on preferably the central axis along last top surface 136, this air outlet exhaust air direction is vertical upwards, both sides produce the negative pressure when it upwards blew off, can be drawn into the flue gas that the burning of both sides fire row department produced and discharge through the mouth of a cigarette, simultaneously, the air outlet of jet-propelled upwards still has the effect of proofreading flame burning direction for the vertical upwards burning of flame.

As shown in fig. 2, the first horizontal plate 111 is connected to a rear baffle 114 parallel to the vertical connecting plate 113, a plurality of fixing structures 115 are formed on the upper end edge of the rear baffle 114, an insertion part 137 is formed by protruding the rear side of the air outlet 13, and the insertion part 137 is fixed with the baffle through the fixing structures. The fixing structures 115 are arranged along the upper end edge of the rear baffle plate 114, a splicing seam is formed between the adjacent fixing structures 115, and the splicing part 137 is inserted into the splicing seam to fix the rear end of the air discharge duct 13 and the rear support.

The rear end part of the fire grate can also adopt a similar fixing mode, and the width of the insertion joint can be flexibly reserved according to an insertion object (the fire grate or the gas grate).

As shown in fig. 1 and 6, the utility model further comprises a front bracket 14 which is matched with the rear bracket, the front bracket is in a U-shaped groove shape with an opening facing backwards, and two side edges of the front bracket are clamped and fixed with the rear bracket or fixed through a connecting piece. The upper end of the front bracket 14 is formed with a second fixing structure 141, and the structure and fixing principle of the second fixing structure 141 are similar to those of the fixing structure 115, which will not be described herein.

Example two

The present embodiment provides a gas water heater, which includes the burner described in the first embodiment, which can be specifically referred to the first embodiment and fig. 1 to 6 of the specification, and details thereof are not repeated herein. It should be noted that, in order to meet the requirement that outside air enters the air outlet from the lower part of the rear bracket through the air inlet, a fan can be arranged below the rear bracket to drive air to flow directionally.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims

1. The utility model provides a combustor, includes the after-poppet and supports a plurality of fire row on the after-poppet, the top of each fire row is formed with fire hole, its characterized in that along length direction: the fire grate is characterized by further comprising a plurality of air rows supported on the rear support, the air rows and the fire rows are arranged in a staggered mode, air outlets are formed in the tops of the air rows, and air inlets communicated with the air outlets are formed in the bottoms or the side faces of the air rows;

the rear bracket is step-shaped and comprises a first horizontal plate, a second horizontal plate and a vertical connecting plate connected between the first horizontal plate and the second horizontal plate;

the air inlet is including being located the first air inlet of the bottom of gas row, set up the first gas pocket that link up on the second horizontal plate, the bottom of gas row with the second horizontal plate is closely laminated, first gas pocket is in the orthographic projection part of the bottom of gas row or whole fall into in the first air inlet.

2. The burner of claim 1, wherein: a notch matched with the step surface of the rear support is formed below the rear side of the air bar, and the air bar is clamped on the rear support through the notch.

3. The burner of claim 2, wherein: the first horizontal plate is connected with the top edge of the vertical connecting plate, the second horizontal plate is connected with the bottom edge of the vertical connecting plate, and the air bar is clamped on the first horizontal plate and the connecting plate through the notch.

4. The burner of claim 3, wherein: the air inlet is including being located the second air inlet of the last top surface of breach, set up the second gas pocket that link up on the first horizontal plate, the last top surface of breach with first horizontal plate closely laminates, the second gas pocket is in the orthographic projection part of the last top surface of breach or whole fall into in the second air inlet.

5. The burner of claim 3 or 4, wherein: the bottom of the air bar extends downwards to form at least one first jaw, the second horizontal plate is provided with a first socket matched with the first jaw, the first jaw is inserted into the first socket, and/or,

6. The burner according to any one of claims 1 to 4, wherein: the top of the air exhaust is provided with an upper top surface protruding upwards, and the air outlet is arranged along the length direction of the upper top surface.

7. The burner of claim 6, wherein: the gas outlet has two at least, is located respectively the both sides of the central axis of last top surface.

8. The burner of claim 7, wherein: an air outlet is also distributed along the central axis of the upper top surface.

9. The burner of claim 2, wherein: the first horizontal plate is connected with a rear baffle plate parallel to the vertical connecting plate, a plurality of fixing structures are formed on the upper end edge of the rear baffle plate, the rear side of the gas row protrudes to form an inserting part, and the inserting part is fixed with the baffle plate through the fixing structures.

10. A gas water heater, its characterized in that: comprising a burner according to any of claims 1-9.