CN113324245A

CN113324245A - Blowing type burner

Info

Publication number: CN113324245A
Application number: CN202110512840.6A
Authority: CN
Inventors: 徐新建; 胡杰
Original assignee: Zhejiang Shuaikang Electric Stock Co Ltd
Current assignee: Zhejiang Shuaikang Electric Stock Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-08-31
Anticipated expiration: 2041-05-11
Also published as: CN113324245B

Abstract

The invention relates to the technical field of burners, in particular to a blowing type burner which comprises a burner end, a fire cover and an ignition device, wherein the burner end is provided with an inner mixing cavity and an outer mixing cavity, the fire cover is arranged on the burner end and is provided with fire holes, the ignition device is arranged on the burner end, an inner mixing pipe communicated with the inner mixing cavity and an outer mixing pipe communicated with the outer mixing cavity extend out of the side surface of the burner end, a cross-flow fan is fixedly arranged between the inlet of the outer mixing pipe and the inlet of the inner mixing pipe, the cross-flow fan is provided with at least two air outlets, the first air outlet is communicated with the outer mixing pipe, and the second air outlet is communicated with the inner mixing pipe. Compared with the prior art, only utilize a cross-flow fan just can provide the air for interior hybrid tube and outer hybrid tube respectively, reduce the fan and set up quantity, reduction in production cost simplifies the combustor structure, carries out accurate blast air regulation and control through the area ratio of adjusting the air outlet, has avoided the not enough insufficient problem that causes the insufficient combustion of primary air, still avoids the too much problem that causes and take off a fire of primary air.

Description

Blowing type burner

Technical Field

The invention relates to the technical field of burners, in particular to a blast type burner.

Background

At present, most of household gas cookers sold in the market adopt an atmospheric partially premixed burner, the principle is that gas flows out from a nozzle rapidly under certain pressure, primary air is injected under the action of venturi effect of an injection pipe, the primary air coefficient is required to reach 0.45-0.75, and then mixed gas flows out from a fire hole through the head of the burner, is secondarily mixed with air again, and is ignited for combustion. The traditional burner needs to inject air by depending on the kinetic energy of gas, so that the problem of insufficient primary air required by combustion is easily caused; on the other hand, the excess air coefficient of the burner is generally between 1.3 and 1.8 determined by the principle of the burner, so that a large amount of heat energy is taken away, and the low heat efficiency is inevitably caused.

The principle of the completely premixed infrared burner is that gas quickly flows out from a nozzle under certain pressure, primary air is injected under the action of the Venturi effect of an injection pipe, the primary air coefficient is required to reach 1.05-1.1, then mixed gas flows out from a tiny fire hole of an enamel plate through the head of the burner, ignition is carried out, and infrared radiation is generated to heat a cooker. Therefore, the primary air factor is required to be high, the power is generally low so as not to cause the overlarge burner, but the heat efficiency is greatly improved because the excess air factor is low and the cooker is heated by an infrared mode.

Because Chinese eating habits generally like stir-frying with strong fire, the market acceptance rate of the infrared stove is not high, a blowing type infrared stove appears on the market, see patent document with the patent number of CN201010194846.5, the blowing type infrared burner and the stove provided with the burner are provided, and the product adopts single-ring fire in consideration of factors such as cost and the like, so that the fire adjusting range is limited, and the power of small fire is larger.

There is a blast type dicyclo furnace end on the market, see patent document CN200720005486.3, it provides an improved gas-cooker, including the furnace end that is formed with interior mixing chamber and outer mixing chamber, the interior mixing tube that extends with interior mixing chamber intercommunication and the outer mixing tube that communicates with outer mixing chamber are extended to the furnace end side, in order to solve the insufficient problem of gas combustion, this patent is mentioned and can be set up centrifugal fan, centrifugal fan only communicates with outer mixing tube through the pipeline, can solve the insufficient problem of gas combustion in the outer mixing tube through this structure, nevertheless because centrifugal fan passes through the pipeline intercommunication, its produced effect is that the wind pressure is great, the amount of wind is less, consequently, need to reach the effect of intensive mixing, centrifugal fan operating power is great, the noise is also great. And in practical application, the interior mixing pipe can produce the insufficient condition of gas burning equally, in order to solve this problem, combustor among the prior art can set up two centrifugal fan, mixing pipe and outer mixing pipe in two centrifugal classification communicate respectively, or, adopt a centrifugal fan, divide two branches through the pipeline and communicate respectively in mixing pipe and outer mixing pipe, thereby reach the purpose that mixing pipe and outer mixing pipe all let in the supplementary gas burning of sufficient air, but if set up two centrifugal fan, its noise and energy consumption can double, the equipment volume also can increase, and it can lead to the furnace end inner structure complicacy to set up two branches, the cost of manufacture increases.

Disclosure of Invention

The invention aims to provide a blast type burner with high combustion efficiency and small volume aiming at the defects in the prior art.

The purpose of the invention is realized by the following technical scheme: the application provides a blast type burner, including the furnace end forming inner mixing chamber and outer mixing chamber, set up the fire lid with fire hole on the furnace end, and the ignition system set up on the furnace end, the side of furnace end extends out inner mixing pipe and outer mixing pipe communicated with outer mixing chamber communicated with inner mixing chamber, fixedly mount a cross-flow fan between entry of the outer mixing pipe and entry of the inner mixing pipe, the cross-flow fan has at least two air outlets, the first air outlet communicates with outer mixing pipe, the second air outlet communicates with inner mixing pipe; the area of the first air outlet and the area of the second air outlet can be the same or different.

Wherein the ratio of the area of the first air outlet to the area of the second air outlet is 1: 1-0.01.

Wherein, the center of the cross-flow fan and the center of the outer mixing pipe are staggered in the transverse direction.

And a nozzle seat is also arranged between the outer mixing pipe and the cross-flow fan, and is provided with a first opening communicated with the first air outlet and a second opening communicated with the second air outlet.

Wherein, the nozzle holder is equipped with the gas passageway, and the one end and the external world intercommunication of gas passageway, the other end and the outer hybrid tube intercommunication of gas passageway.

Wherein, the nozzle holder is provided with a through hole for air to pass through, and a partition part is formed in the through hole and divides the through hole into a first opening and a second opening.

Wherein, be equipped with the support piece that a plurality of intervals were arranged in the first opening, wherein one end of each support piece meets, and the other end of each support piece extends to the pore wall or the wall spare of through-hole along the radial of through-hole.

Wherein, the cross section shape of the partition part and the cross section shape of the support part are both triangular or trapezoidal.

Wherein, the fan one side outwards is equipped with the wind door plant, and wherein one end of wind door plant passes through the articulated elements and is articulated with the fan.

Wherein, the entrance of interior mixing tube is provided with the regulating plate that can block the second air outlet, and the center at interior mixing tube is rotationally installed to the regulating plate.

The invention has the beneficial effects that: the utility model provides a blast type combustor, set up first air outlet and second air outlet through cross-flow fan, only utilize a cross-flow fan just can be respectively for interior hybrid tube and outer hybrid tube provide the air, the reduction fan sets up quantity, the reduction in production cost, reduce the volume of combustor, the area ratio that can adjust first air outlet and second air outlet carries out accurate blast air regulation and control to interior hybrid chamber and outer hybrid chamber, thereby required air of gas combustion in hybrid chamber and the outer hybrid chamber in the accurate control, not only avoided primary air not enough to cause the insufficient problem of burning, avoid the too much problem that causes inefficiency or even take off a fire of primary air simultaneously, thereby reach energy-efficient purpose.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a blower burner in this embodiment.

Fig. 2 is an exploded view of the blower burner in this embodiment.

Fig. 3 is a plan view of the blower burner of the present embodiment.

Fig. 4 is a cross-sectional view taken at a-a in fig. 3.

Fig. 5 is a schematic structural diagram of the blower burner according to the present embodiment after the blower is hidden.

Fig. 6 is a schematic structural view of the nozzle holder in this embodiment.

Description of the drawings: the burner comprises a burner head 1, an outer mixing cavity 11, an inner mixing cavity 12, a fire cover 2, an ignition device 21, an outer mixing pipe 3, an inner mixing pipe 4, a nozzle holder 5, a first opening 51, a second opening 52, a gas channel 53, a supporting piece 54, a partition piece 55, a cross-flow fan 6, a wind gate plate 71, a bolt 72, a compression spring 73 and an adjusting plate 8.

Detailed Description

The invention is further described with reference to the following examples.

Referring to fig. 1 and 2, the burner includes a burner head 1, an inner mixing chamber 12 and an outer mixing chamber 11 are formed inside the burner head 1, a fire cover 2 is disposed at a gas outlet of the inner mixing chamber 12 and the outer mixing chamber 11, a plurality of fire holes are disposed on the fire cover 2, the fire holes are spaced and allow mixed gas to flow out, and an ignition device 21 is further disposed on the burner head 1 and is used for igniting the mixed gas by the ignition device 21. An inner mixing pipe 4 communicated with the inner mixing cavity 12 and an outer mixing pipe 3 communicated with the outer mixing cavity 11 extend out of the side surface of the furnace end 1. During operation, gas and air enter into inner mixing pipe 4 and outer mixing pipe 3 to mix in inner mixing pipe 4 and outer mixing pipe 3 and obtain the gas mixture, the gas mixture flows into inner mixing chamber 12 and outer mixing chamber 11 again, the gas mixture can move up and flow out the fire hole of fire lid 2 in inner mixing chamber 12 and outer mixing chamber 11, ignition 21 starts and ignites the gas mixture, thereby realizes the work of combustor. Preferably, the ratio of the volume of the inner mixing cavity to the volume of the outer mixing cavity is 1: 0.1-10.

As an improvement, with reference to fig. 3 to 5, a cross-flow fan 6 is fixedly installed between the inlet of the outer mixing pipe 3 and the inlet of the inner mixing pipe 4, in this embodiment, the cross-flow fan 6 is installed at a position right from the inlet of the outer mixing pipe 3, that is, the center of the cross-flow fan 6 and the center of the outer mixing pipe 3 are staggered in the transverse direction, so that part of the air outlets of the cross-flow fan 6 are communicated with the inner mixing pipe 4, the cross-flow fan 6 forms two air outlets, the first air outlet is communicated with the outer mixing pipe 3, and the second air outlet is communicated with the inner mixing pipe 4.

In practical application, because the volume of the inner mixing cavity 12 is different from the volume of the outer mixing cavity 11, the air required to be blown into the inner mixing tube 4 and the outer mixing tube 3 is also different, and the air required by the inner mixing tube 4 is smaller than that required by the outer mixing tube 3, so that the area of the first air outlet is different from that of the second air outlet, namely, the ratio of the area of the first air outlet to that of the second air outlet is 1: 1-0.01. Before the air proportion of the inner mixing tube 4 and the outer mixing tube 3 is divided through the first air outlet and the second air outlet with different areas, the aim of forced accurate air blast to the inner mixing tube 4 and the outer mixing tube 3 is fulfilled.

The combustor of this embodiment, set up first air outlet and second air outlet through cross-flow fan 6, only utilize a cross-flow fan 6 just can be respectively for interior hybrid tube 4 and outer hybrid tube 3 provide the air, the reduction fan sets up quantity, the reduction in production cost, reduce the volume of combustor, the area ratio that can adjust first air outlet and second air outlet carries out accurate blast air regulation and control to interior hybrid chamber 12 and outer hybrid chamber 11, thereby required air of gas combustion in 12 of interior hybrid chamber of accurate control and the outer hybrid chamber 11, not only avoided primary air not enough to cause the insufficient problem of burning, avoid the too much problem that causes inefficiency or even take off a fire of primary air simultaneously, thereby reach energy-efficient purpose.

The cross flow fan 6 in this embodiment is different from the conventional centrifugal fan in that the conventional centrifugal fan has a large air pressure and a small air volume and high energy consumption, but the cross flow fan 6 adopted in this embodiment has a small air pressure and a large air volume and saves energy consumption.

In this embodiment, referring to fig. 3 to 6, a nozzle holder 5 is further disposed between the outer mixing pipe 3 and the cross-flow fan 6, the nozzle holder 5 is provided with a gas channel 53, one end of the gas channel 53 is communicated with the outside, and the other end of the gas channel 53 is communicated with the outer mixing pipe 3, it should be noted that the gas channel 53 and the nozzle holder 5 are integrally formed. The nozzle holder 5 is provided with a through hole for air to pass through, a partition piece 55 is formed in the through hole, the partition piece 55 divides the through hole into a first opening 51 and a second opening 52, a first air outlet of the cross flow fan 6 is communicated with the first opening 51, and a second air outlet of the cross flow fan 6 is communicated with the second opening 52, namely, the air outlet of the cross flow fan 6 is divided into a first air outlet and a second air outlet by the nozzle holder 5. The position of the partition 55 can be designed according to the air volume required by the inner mixing chamber 12 and the air volume required by the outer mixing chamber 11.

In order to enhance the structural strength of the nozzle holder 5, referring to fig. 5 and 6, a plurality of supporting members 54 are disposed in the first opening 51 at intervals, one end of each supporting member 54 is intersected, the other end of each supporting member 54 extends to a hole wall or a partition member 55 of the through hole along the radial direction of the through hole, and the supporting members 54 may be disposed in a cross shape, a meter shape, or the like.

In this embodiment, referring to fig. 6, in order to reduce the wind resistance caused by the partition member 55 and the support member 54, the cross-sectional shape of the partition member 55 and the cross-sectional shape of the support member 54 are both triangular or trapezoidal, that is, both left and right side surfaces of the partition member 55 and both left and right side surfaces of the support member 54 are inclined inward toward the fan, thereby forming an inclined surface for guiding the wind direction, and the wind resistance caused by the support member 54 or the partition member 55 is reduced, and the inclined angle may be selected from 0 ° to 90 °.

Considering that the components and the white count of the fuel gas of the burner fluctuate relative to the standard fuel gas in different use environments, the amount of air blown into the outer mixing pipe 3 and the inner mixing pipe 4 by the cross-flow fan 6 needs to be adjusted, in this embodiment, referring to fig. 1, a wind door plate 71 is arranged on the outward side of the fan, and one end of the wind door plate 71 is hinged to the fan through a hinge. Specifically, the hinged member may be a bolt 72, a mounting hole through which the bolt 72 passes is formed in any one corner of the wind door panel 71, the bolt 72 is sleeved with a compression spring 73 and then passes through the mounting hole to be fixed on the fan, the compression spring 73 can drive the wind door panel 71 to be tightly attached to the fan, and the wind door panel 71 can be fixed by the aid of elasticity of the compression spring 73. By adjusting different swing angles of the air door plate 71, the air door plate 71 blocks an air inlet of the cross-flow fan 6, so that the air inlet amount of the cross-flow fan 6 is adjusted.

Similarly, please see fig. 5, the entrance of the inner mixing pipe 4 may be provided with an adjusting plate 8 capable of blocking the second air outlet, the adjusting plate 8 may be rotatably installed at the center of the inner mixing pipe 4, and the rotating structure may be specifically realized by using the rotating shaft as an installation mode of the hinge member, and specifically may be selected according to actual requirements.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a blast type combustor, is in including the furnace end, the setting that are formed with interior hybrid chamber and outer hybrid chamber the fire lid that has the fire hole on the furnace end and setting are in ignition on the furnace end, the furnace end side extend with the interior hybrid tube of interior hybrid chamber intercommunication and with the outer hybrid tube of outer hybrid chamber intercommunication, its characterized in that: a cross-flow fan is fixedly arranged between the inlet of the outer mixing pipe and the inlet of the inner mixing pipe, the cross-flow fan is provided with at least two air outlets, a first air outlet is communicated with the outer mixing pipe, and a second air outlet is communicated with the inner mixing pipe; the area of the first air outlet and the area of the second air outlet can be the same or different.

2. A blower-type burner according to claim 1, wherein: the ratio of the area of the first air outlet to the area of the second air outlet is 1: 1-0.01.

3. A blower-type burner according to claim 1, wherein: the center of the cross-flow fan and the center of the outer mixing pipe are staggered in the transverse direction.

4. A blower-type burner according to claim 1, wherein: and a nozzle seat is also arranged between the outer mixing pipe and the cross-flow fan, and is provided with a first opening communicated with the first air outlet and a second opening communicated with the second air outlet.

5. A blower-type burner according to claim 4, wherein: the nozzle seat is provided with a gas channel, one end of the gas channel is communicated with the outside, and the other end of the gas channel is communicated with the outer mixing pipe.

6. A blower-type burner according to claim 4, wherein: the nozzle seat is provided with a through hole for air to pass through, a partition piece is formed in the through hole, and the partition piece divides the through hole into the first opening and the second opening.

7. A blower-type burner according to claim 6, wherein: the first opening is internally provided with a plurality of supporting pieces which are arranged at intervals, one end of each supporting piece is intersected, and the other end of each supporting piece extends to the hole wall or the partition piece of the through hole along the radial direction of the through hole.

8. A blower-type burner according to claim 7, wherein: the cross section shape of the partition part and the cross section shape of the supporting part are both triangular or trapezoidal.

9. A blower-type burner according to claim 1, wherein: the fan one side outwards is equipped with the wind door plant, wherein one end of wind door plant pass through the articulated elements with the fan is articulated.

10. A blower-type burner according to claim 1, wherein: the entrance of interior hybrid tube is provided with and blocks the regulating plate of second air outlet, the regulating plate is rotationally installed the center of interior hybrid tube.