CN211716555U

CN211716555U - Novel gas burner of wall-mounted gas stove

Info

Publication number: CN211716555U
Application number: CN202020269945.4U
Authority: CN
Inventors: 邱晓宁
Original assignee: Zhongshan Huaning Electric Appliance Co ltd
Current assignee: Zhongshan Huaning Electric Appliance Co ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-10-20
Anticipated expiration: 2030-03-07

Abstract

The utility model discloses a novel gas hanging stove gas burner, including burning piece (1), gas-distributing pipe (2), nozzle (3), fore-stock (4) and after-poppet (5), burning piece (1) is connected and is set up between fore-stock (4) and after-poppet (5), gas-distributing pipe (2) are connected nozzle (3) and are close to after-poppet (5) and set up, the connection of combustor below is equipped with orifice plate (6), it is equipped with seal baffle (7) to connect on the surface of fore-stock (4). Compared with the prior art, the utility model the advantage lie in: the supply amount of primary air and secondary air is effectively regulated, the combustion is more sufficient, and the energy is saved and the environment is protected.

Description

Novel gas burner of wall-mounted gas stove

Technical Field

The utility model relates to a gas burner technical field specifically indicates a novel gas hanging stove gas burner.

Background

The conditions that must be met for gas combustion are:

1. combustible components and oxygen in the fuel gas are mixed in a molecular state according to a certain proportion.

2. The molecules involved in the reaction must have the energy required to destroy the old molecule and survive the new molecule upon collision.

3. With the time necessary to complete the reaction.

The combustion mode is as follows:

1. diffusion combustion: before combustion of the gas, there is no combustion method in which the amount of air is mixed in advance, that is, the primary air is zero. Its advantages are stable combustion, low combustion temp, long flame and insufficient combustion.

2. The partially premixed combustion atmosphere formula: the combustible gas and oxygen in air are mixed as combustion improver before combustion, and form a certain combustible mixed gas, which is ignited by a fire source to cause combustion. The primary air amount is more than 0 and less than alpha' and less than 1, non-luminous blue flame is formed during combustion, and compared with a diffusion combustion mode, the partially premixed combustion mode has higher temperature, shorter flame and more sufficient combustion.

3. Full premix formula burning: all air required by combustion is mixed into fuel gas and is ignited by a fire source to cause combustion. The primary air amount was 100%. Compared with a partial premixing combustion mode, the combustion temperature is high, the flame is short, and the combustion is more sufficient. The disadvantage is poor stability of combustion.

The burning mode that present gas hanging stove mainly adopted: the gas burners of wall-mounted gas furnaces mostly adopt a partial premixed combustion mode. The primary air quantity of partial premixed combustion is more than 0 and less than alpha' and less than 1, because the primary air quantity is less than the air quantity required by combustion, the air which is not combusted sufficiently is mixed with the air outside the flame in a diffusion combustion mode for combustion, and the excess air coefficient is generally changed between 1.3 and 1.8 in order to ensure sufficient combustion.

In order to ensure that the gas burner reaches the optimum combustion state, the supply of primary air and secondary air must be well controlled. The primary air amount is large, the combustion is more sufficient, the combustion temperature is higher, and the CO content in the flue gas is low; however, too much primary air affects the stability of combustion, resulting in flashback, flame out, and misfire. Incomplete combustion occurs due to insufficient supply of secondary air, CO in flue gas exceeds the standard, and fuel gas is wasted; and too much secondary air will reduce the thermal efficiency and waste energy as well.

The existing gas burner of the wall-mounted gas boiler consists of a burning sheet, a gas distribution pipe, a nozzle, a front bracket and a rear bracket, and the gas is sprayed into a Venturi tube in the burning sheet from the nozzle at high pressure to cause the pressure in the tube to be reduced, so that primary air is sucked and mixed with the gas to be sprayed out of a burning hole for burning. The secondary air enters from the lower part of the burner and is mixed with the gas which is not burnt completely around the flame to form complete combustion.

However, since the lower part of the gas burner is open, the distribution of the primary and secondary air required for combustion is not optimized. The expression is as follows:

the air supply amount of 1 time is not enough, the combustion is not sufficient on the premise of stable combustion, the CO in the flue gas is higher, and the discharge amount of toxic gas is increased.

2 the supply amount of secondary air is large, which affects the sufficient combustion and reduces the heat efficiency.

3 the front bracket of the burner is provided with a square hole due to the requirement of structural design. The square holes increase the supply amount of local secondary air, and excessive secondary air influences sufficient combustion and also reduces the heat efficiency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a novel gas hanging stove gas burner that once reaches the secondary air supply volume of effective regulation and control, make the burning more abundant.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a novel gas hanging stove gas burner, includes burning piece, gas distribution pipe, nozzle, fore-stock and after-poppet, the burning piece is connected and is set up between fore-stock and after-poppet, the gas distribution pipe is connected the nozzle and is close to the after-poppet setting, the connection of combustor below is equipped with the orifice plate, it is equipped with sealing baffle to connect on the surface of fore-stock.

As an improvement, the orifice plate is matched with the size of the lower part of the combustor and covers the lower part of the combustor completely.

As an improvement, the pore plate is provided with small pores which are uniformly distributed.

Compared with the prior art, the utility model the advantage lie in:

1. according to the size of the lower part of the burner to ensure full coverage, a pore plate is designed and fixed at the lower part of the burner. The orifice plate functions as a flow divider:

firstly, the secondary air entering the burner must flow in through the small holes of the orifice plate, and the resistance of the air flowing through the orifice plate is increased, so that the flow rate of the secondary air in unit time is reduced, and the purpose of regulating and controlling the supply quantity of the secondary air is achieved.

And secondly, because the total air supply amount for combustion is basically unchanged, the supply amount of primary air is increased by reducing secondary air, and because of the increase of the primary air, CO in the more sufficient flue gas is combusted, the utilization rate of the fuel gas is improved, and the combustion temperature is higher and the heat exchange efficiency is also improved.

2. A strip-shaped stainless steel plate is designed and fixed on the front bracket of the combustion piece to seal all square holes, so that secondary air can not enter through the square holes, and the supply of excessive secondary air is reduced.

The invention accurately distributes the primary air quantity and the secondary air quantity required by the combustion of the gas burner, so that the gas burner works under the optimized working condition.

Drawings

Fig. 1 is the utility model relates to a novel gas hanging stove gas burner schematic structure.

Fig. 2 is the utility model relates to a novel gas hanging stove gas burner looks sideways at the structural schematic diagram.

Fig. 3 is a schematic view of the structure in direction a of fig. 2.

Fig. 4 is a schematic view of the structure of the gas burner of the novel gas wall-hanging stove.

Fig. 5 is a schematic view of the orifice plate structure of the gas burner of the novel gas wall-hanging stove.

As shown in the figure: 1. the device comprises a combustion sheet, 2 parts of a gas distribution pipe, 3 parts of a nozzle, 4 parts of a front support, 5 parts of a rear support, 6 parts of a pore plate, 7 parts of a sealing baffle plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1-5, a novel gas burner for a wall-mounted gas boiler comprises a combustion piece 1, a gas distribution pipe 2, a nozzle 3, a front support 4 and a rear support 5, wherein the combustion piece 1 is connected and arranged between the front support 4 and the rear support 5, the gas distribution pipe 2 is connected with the nozzle 3 and is arranged close to the rear support 5, a hole plate 6 is connected and arranged below the burner, and a sealing baffle 7 is connected and arranged on the outer surface of the front support 4.

The pore plate 6 is matched with the size of the lower part of the burner and covers the lower part of the burner comprehensively, and small holes which are distributed uniformly are arranged on the pore plate 6.

Through tests, the gas burner and the existing gas burner are respectively tested under the same conditions by using a 24KW gas wall-hanging furnace, the CO content in the flue gas is respectively 100PPM (1PPM is one part per million) and 600PPM, and the CO content in the flue gas of the gas burner is reduced by 500PPM (the national standard is not more than 1000 PPM). The thermal efficiency is improved by 1% due to the increase of the combustion temperature.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a novel gas hanging stove gas burner, includes burning piece (1), gas distribution pipe (2), nozzle (3), fore-stock (4) and after-poppet (5), burning piece (1) is connected and is set up between fore-stock (4) and after-poppet (5), gas distribution pipe (2) are connected nozzle (3) and are close to after-poppet (5) and set up its characterized in that: the burner is characterized in that a pore plate (6) is connected and arranged below the burner, and a sealing baffle plate (7) is connected and arranged on the outer surface of the front support (4).

2. The novel gas burner of the wall-mounted gas boiler as claimed in claim 1, wherein: the pore plate (6) is matched with the size of the lower part of the combustor and covers the lower part of the combustor completely.

3. The novel gas burner of the wall-mounted gas boiler as claimed in claim 1, wherein: the pore plate (6) is provided with small pores which are uniformly distributed.