CN213119177U - Dense-thin gas range - Google Patents

Abstract

The utility model discloses a dense-dilute gas stove, which comprises a stove head and an air inlet valve, wherein the stove head is provided with an injection pipe, and the stove head is provided with a first mixing cavity and a second mixing cavity; fire covers cover the first mixing cavity and the second mixing cavity, a first fire hole communicated with the first mixing cavity and a second fire hole communicated with the second mixing cavity are arranged on the fire covers, and the first fire hole and the second fire hole are distributed at intervals; be provided with a plurality of nozzles on the admission valve, the nozzle with draw and penetrate a tub one-to-one, the nozzle stretches into respectively and penetrates intraductally and through drawing penetrating a tub intercommunication mixing chamber to drawing of correspondence, and what communicate first mixing chamber is the third nozzle, and what communicate the second mixing chamber is first nozzle, has seted up the induced air hole on third nozzle and the first nozzle respectively, and the total area in the induced air hole of seting up on third nozzle and the first nozzle is different. The dense-dilute gas stove of the scheme realizes a dense-dilute alternate combustion mode, reduces the combustion temperature, enables the gas to be combusted more fully, and inhibits the generation of nitrogen oxides.

Description

Dense-thin gas range

Technical Field

The utility model relates to a gas field, in particular to dense-dilute gas stove.

Background

The existing gas cooker generally comprises a burner and an air inlet valve, wherein the burner comprises a burner head and a fire cover, the concentration of gas coming out from fire holes of the fire cover of the burner is the same, the firepower is large and concentrated during combustion, the combustion temperature is high, insufficient combustion is easily caused, and more carbon monoxide, nitrogen oxide and other gases which cause great harm to a human body are generated in the combustion process.

With the coming of the world energy crisis and the improvement of the environmental awareness of people, the requirements on the efficiency and the emission of the gas cooker are higher and higher, and the existing gas cooker needs to be further improved in order to meet the requirements on low nitrogen oxide emission.

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 dense and thin gas-cooker realizes the alternate mode of burning of dense and thin, reduces combustion temperature, makes the gas combustion more abundant, reaches the requirement that low nitrogen oxide discharged.

According to the utility model discloses a thick and thin gas-cooker of first aspect embodiment includes: the furnace comprises a furnace end, a first mixing cavity and a second mixing cavity, wherein two or more than two injection pipes are arranged on the furnace end, the furnace end is provided with the first mixing cavity and the second mixing cavity, and the first mixing cavity and the second mixing cavity are respectively connected with at least one injection pipe; the fire cover covers the first mixing cavity and the second mixing cavity, first fire holes and second fire holes are formed in the fire cover and distributed at intervals, the first fire holes are communicated with the first mixing cavity, and the second fire holes are communicated with the second mixing cavity; the air inlet valve, be provided with a plurality of nozzles on the air inlet valve, the nozzle with draw and penetrate a tub one-to-one, the nozzle stretches into the correspondence respectively draw and penetrate intraductal and through drawing penetrating a tub intercommunication mixing chamber, the intercommunication first mixing chamber be the third nozzle, the intercommunication the second mixing chamber be first nozzle, the third nozzle with air guide hole has been seted up on the first nozzle respectively, just the third nozzle with set up on the first nozzle air guide hole's total area is different.

According to the utility model discloses thick and thin gas-cooker of first aspect embodiment has following beneficial effect at least: according to the scheme, the first mixing cavity and the second mixing cavity which are independent are arranged on the furnace end, the different nozzles which are respectively communicated with the first mixing cavity and the second mixing cavity are provided with the air inducing holes with different total areas, the mixed gas which respectively enters the first mixing cavity and the second mixing cavity through the nozzles, and the concentration of the mixed gas which is respectively contained in the first mixing cavity and the second mixing cavity is different due to the fact that different amounts of air are introduced in the flowing process; the fire cover is provided with the first fire holes and the second fire holes which are distributed at intervals, so that mixed gas with different concentrations is output and combusted at intervals, dense flame and light flame are realized, dense and light combustion is achieved in a dense and light alternating mode, the combustion temperature is reduced, the gas is combusted more fully, the generation of nitrogen oxides is inhibited, and the requirement of low nitrogen oxide emission is met.

According to the utility model discloses thick and thin gas-cooker of first aspect, first hybrid chamber with the second hybrid chamber is the annular chamber and follows the coaxial setting of inferior in proper order from inside to outside.

According to the utility model discloses the first aspect dense-dilute gas stove, still be provided with the inner ring hybrid chamber on the furnace head, the inner ring hybrid chamber is the annular chamber and follows the coaxial setting of order from inside to outside for first hybrid chamber, the inner ring hybrid chamber is through drawing the second nozzle that penetrates union coupling setting on the admission valve, the inner ring hybrid chamber coats and is stamped the inner ring fire lid, the inner ring fire is covered and is provided with the intercommunication the inner ring fire hole of inner ring hybrid chamber. The inner ring mixing cavity and the inner ring fire cover are combined to form an auxiliary burner positioned in the middle, the main burner and the auxiliary burner are matched, and the application range is wider.

According to the utility model discloses a thick and thin gas-cooker of first aspect, leave the air between inner ring hybrid chamber and the first hybrid chamber and supply the clearance; and a secondary air supplement channel is also arranged on the furnace end, penetrates through the first mixing cavity and the second mixing cavity and communicates the outer side of the furnace end with the air supplement gap. This scheme is through setting up secondary air and supplementing the passageway, and outside air supplies the passageway through the secondary air and enters into around the inner ring hybrid chamber, provides secondary air for the inner ring fire lid, makes the gas obtain abundant burning, and the increasing of heat efficiency, the energy saving just reduces the uneven condition of firepower distribution. Furthermore, 2-4 secondary air supplement channels are preferably arranged on the furnace end.

According to the utility model discloses the first aspect dense-thin gas-cooker, the induced air hole includes dense flame induced air hole and light flame induced air hole, set up on the first nozzle light flame induced air hole, set up on the third nozzle dense flame induced air hole, the total area in light flame induced air hole is greater than the total area in dense flame induced air hole. The area of the thick flame air inducing hole is small, the amount of introduced air is small, the concentration of mixed fuel gas is high, and thick flame with high temperature is generated after combustion; the area of the light flame air guide hole is large, the amount of introduced air is large, the concentration of mixed gas is low, and light flame with low temperature is generated after combustion.

According to the utility model discloses the first aspect dense-thin gas-cooker, the aperture in light flame induced air hole is greater than the aperture in dense flame induced air hole, through increasing the aperture in light flame induced air hole, the total area that reaches light flame induced air hole is greater than the effect of the total area in dense flame induced air hole. Further, it is easily understood that the total area of the light flame draft holes can also be increased by increasing the number of the light flame draft holes.

According to the utility model discloses thick and thin gas-cooker of first aspect, the third nozzle with a plurality of induced air holes have been seted up on the first nozzle respectively, the induced air hole is the multiaspect respectively and encircles and distribute the third nozzle with on the first nozzle, make the air get into in third nozzle and the first nozzle from a plurality of directions, with the gas homogeneous mixing.

According to the utility model discloses thick and thin gas-cooker of first aspect, the induced air hole divide into the multiunit, not the same group the induced air hole arrives distance between the export of first nozzle is different. Through the multiple groups of air inducing holes with different distances, air with different quantities can be introduced for multiple times, and mixed fuel gas with different concentrations is obtained.

According to the utility model discloses thick and thin gas-cooker of first aspect, draw and penetrate to have seted up on the pipe and draw and penetrate a tub wind hole. The air holes of the injection pipe have the same function as the air inducing holes and are used for introducing air. The air holes of the injection pipes are formed in part or all of the injection pipes, so that the concentration of the fuel gas in the injection pipes can be changed, and mixed fuel gas with various concentrations can be obtained.

According to the utility model discloses the first aspect thick and thin gas-cooker, draw and penetrate and be provided with the wind door plant of adjustable aperture size on the pipe. This design can also be further finely tuned the air-fuel ratio of mixing the gas through adjustment wind door plant, and through the aperture size that changes the wind door plant, the further adjustment of realizing mixing the gas, the burning of thick and thin flame of more accurate control ensures going on smoothly of thick and thin burning.

According to the utility model discloses thick and thin gas-cooker of first aspect, be provided with one or more valve switch on the admission valve. The number of the valve switches can be adjusted according to the actual situation, and one valve switch can independently control one nozzle and can also control a plurality of nozzles simultaneously. When the number of the valve switches is equal to the number of the nozzles, each valve switch independently controls one nozzle, and the control accuracy is improved.

According to the utility model discloses the first aspect the rich-lean gas-cooker, the fire is covered and is provided with steady flame hole, and the setting up of steady flame hole can make flame burning more stable.

According to the utility model discloses the first aspect thick and thin gas-cooker, the middle part of inner ring hybrid chamber is provided with a columniform mounting hole, be provided with in the mounting hole and prevent dry combustion method probe, can be used to carry out the monitoring of preventing dry combustion method.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a thick and thin gas cooker of the present invention;

fig. 2 is a sectional view of the thick and thin gas range of fig. 1;

fig. 3 to 4 are schematic structural views of two fire covers provided by the present invention;

fig. 5 is a schematic view of another intake valve according to the present invention.

The reference numbers illustrate:

an air intake valve 100, a first nozzle 110, a light flame draft hole 111, a secondary draft hole 112, a second nozzle 120, a third nozzle 130, a thick flame draft hole 131, a first valve switch 140, a second valve switch 150;

the air-conditioning device comprises a furnace end 200, a first injection pipe 210, an air door plate 211, an injection pipe air hole 212, a second injection pipe 220, a third injection pipe 230, an inner ring mixing cavity 240, a first mixing cavity 250, a second mixing cavity 260, a mounting hole 270 and a secondary air supplementing channel 280;

an inner ring fire cover 300;

the fire cover 400, the first fire hole 410, the second fire hole 420, and the flame stabilizing hole 430.

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.

Referring to fig. 1 and 2, the utility model provides a thick and thin gas cooker, which comprises an air inlet valve 100, a burner 200, an inner ring fire cover 300 and a fire cover 400.

Specifically, the furnace end 200 is provided with three injection pipes, namely a first injection pipe 210, a second injection pipe 220 and a third injection pipe 230. The furnace end 200 is provided with an inner ring mixing cavity 240, a first mixing cavity 250 and a second mixing cavity 260, wherein the first injection pipe 210 is communicated with the second mixing cavity 260, the second injection pipe 220 is communicated with the inner ring mixing cavity 240, and the third injection pipe 230 is communicated with the first mixing cavity 250. The inner ring fire cover 300 covers the upper part of the inner ring mixing cavity 240, and an inner ring fire hole communicated with the inner ring mixing cavity 240 is formed in the inner ring fire cover 300. The fire cover 400 covers the first mixing chamber 250 and the second mixing chamber 260, a first fire hole 410 communicated with the first mixing chamber 250 and a second fire hole 420 communicated with the second mixing chamber 260 are arranged on the fire cover 400, and the first fire hole 410 and the second fire hole 420 are distributed at intervals. The air inlet valve 100 is provided with a first nozzle 110, a second nozzle 120 and a third nozzle 130 which are in one-to-one correspondence with the three injection pipes, and the nozzles respectively extend into the corresponding injection pipes and are communicated with the mixing cavity through the injection pipes; the third nozzle 130 communicated with the first mixing chamber 250 and the first nozzle 110 communicated with the second mixing chamber 260 are respectively provided with an air inducing hole, and the sizes of the air inducing holes formed on the first nozzle 110 and the third nozzle 130 are different. The first nozzle 110 and the third nozzle 130 can respectively introduce different amounts of primary air through the air inducing holes with different sizes, so that the air-fuel ratio of the mixed gas in the second mixing cavity 260 and the first mixing cavity 250 is different, and two mixed gases with different concentrations are obtained; meanwhile, the first fire holes 410 and the second fire holes 420 which are distributed at intervals are formed in the fire cover 400, so that mixed gas with different concentrations can be output and combusted at intervals, a dense flame and a light flame can be achieved, dense and light combustion can be achieved in a dense and light alternate mode, the combustion temperature is reduced, the gas can be combusted more fully, generation of nitrogen oxides can be inhibited, and the requirement of low nitrogen oxide emission can be met.

The mixing degree of the gas and the air in the first mixing chamber 250, the second mixing chamber 260, the first fire hole 410 and the second fire hole 420 is mainly determined by the first nozzle 110 and the third nozzle 130.

In one embodiment, the first mixing chamber 250 and the second mixing chamber 260 are a dense flame mixing chamber and a weak flame mixing chamber, respectively. The induced air holes include a thick flame induced air hole 131 and a thin flame induced air hole 111. The air inducing holes of the first nozzle 110 are light flame inducing holes 111, and the air inducing holes of the third nozzle 130 are thick flame inducing holes 131. The aperture 111 of the light flame draft hole is larger than the aperture of the thick flame draft hole 131. Wherein, the aperture of the thick flame air inducing hole 131 is 2-3.5mm, preferably 2.5mm, and the aperture of the light flame air inducing hole 111 is 3.2-4.5mm, preferably 3.8 mm. The aperture of the thick flame air inducing hole 131 is small, the amount of introduced primary air is small, the concentration of mixed gas is high, and thick flame with higher temperature is generated after combustion; the light flame draft hole 111 has a large aperture, a large amount of primary air is introduced, the concentration of the mixed gas is low, and a low temperature light flame is generated after combustion.

It is easy to understand that, a plurality of air inducing holes are respectively arranged on the first nozzle 110 and the third nozzle 130, and the air inducing holes are distributed on the nozzles in a six-sided surrounding manner, so that air enters the nozzles from a plurality of directions and is uniformly mixed with the gas. The air inducing holes are not limited to six surfaces which are distributed on the nozzle in a surrounding mode, and can be in four-surface surrounding, five-surface surrounding or eight-surface surrounding and the like.

It is further contemplated that a plurality of air induction holes are distributed around the nozzle to form an air induction hole group, two or more air induction hole groups may be arranged on the nozzle, and the distances from the air induction holes of different groups to the outlet of the nozzle are different. As shown in fig. 5, the first nozzle 110 is further provided with a secondary air inducing hole 112, and the secondary air inducing hole 112 is located between the aperture 111 of the light flame air inducing hole and the first injecting pipe 210. Through the secondary air guide holes 112, the first nozzle 110 can introduce more air for a plurality of times, so that mixed gas with different concentration from that of the third nozzle 130 is obtained. The present embodiment only provides the secondary air inducing holes 112 on the first nozzle 110, and it is easy to conceive that in other embodiments, more air inducing hole sets may be provided on the first nozzle 110, or a plurality of air inducing hole sets may be provided on other nozzles.

As shown in fig. 1, in the present embodiment, the first injection pipe 210 is provided with an injection pipe air hole 212. The function of the air hole 212 of the ejector pipe is consistent with that of the air hole on the nozzle, and the air hole is used for introducing air. The air holes 212 of the injection pipes are formed in part of the injection pipes, so that the concentration of the fuel gas in the injection pipes can be changed, and mixed fuel gas with various concentrations can be obtained. It is easy to think that in other embodiments, the other ejector pipes can be provided with ejector pipe air holes.

It is easy to understand that the shape of the air inducing hole and the air inducing hole of the injection pipe is any one of a circle, an ellipse and a polygon, wherein the polygon can be a triangle, a diamond, a rectangle, a square, a hexagon and the like. The air holes of the air guide holes and the air holes of the air guide pipes are preferably circular, so that the processing is convenient.

Furthermore, the injection pipe is provided with a damper plate 211 with an adjustable opening. Except that adjusting the air-fuel ratio of mixing the gas through induced air hole and ejector pipe wind hole, this design can also be further finely tuned the air-fuel ratio of mixing the gas through adjustment air door plant 211, through the aperture size that changes air door plant 211, realizes mixing the further adjustment of gas, and the burning of thick and thin flame of more accurate control is ensured going on smoothly of thick and thin burning.

Further, one or more valve switches 140, 150 are provided on the intake valve 100. The number of valve switches 140, 150 may be adjusted according to the actual application, and in this embodiment, the intake valve 100 is provided with a first valve switch 140 and a second valve switch 150, wherein the first valve switch 140 controls the second nozzle 120 separately, and the second valve switch 150 controls the first nozzle 110 and the third nozzle 130 simultaneously. In addition, when the number of the valve switches is equal to the number of the nozzles, each valve switch independently controls one nozzle, and the control accuracy can be improved.

As shown in fig. 1, the inner ring mixing cavity 240, the first mixing cavity 250 and the second mixing cavity 260 are annular cavities and are coaxially arranged from inside to outside in sequence. An air supplement gap 241 is left between the inner ring mixing chamber 240 and the first mixing chamber 250.

Further, a secondary air supplement channel 280 is further disposed on the burner 200, and the secondary air supplement channel 280 passes through the first mixing chamber 250 and the second mixing chamber 260 and communicates the outside of the burner with the air supplement gap 280. The external air enters the air supplement gap 280 through the secondary air supplement channel 280 to provide air for the auxiliary burner, so that the fuel gas is fully combusted, the heat efficiency is improved, and the energy is saved. It is easily conceived that 2 to 4 secondary air supplement passages 280 are provided on the burner 200. Further, two secondary air supplement passages 280 are preferably provided on the burner 200. The secondary air supplement channels 280 are uniformly distributed on the outer side surface of the burner 200, and the air is uniformly mixed with the fuel gas for the second time through the uniformly distributed secondary air supplement channels 280.

In order to solve the problems that the gas of the existing burner generally directly rises to the fire cover from the injection pipe, the gas is easily distributed unevenly, and the fire is uneven, the embodiment also has annular channels for mixed gas to pass through respectively arranged below the secondary air supplement channel 280. The annular channel for mixed gas to pass through is arranged below the secondary air supplementing channel 280, so that the mixed gas can respectively pass through the upper surface and the lower surface of the secondary air supplementing channel 280, the circulation of the mixed gas is increased, and the condition of uneven fire power distribution is reduced.

Referring to fig. 1 and 3, the fire cover 400 shown in fig. 1 and 3 is provided with only first fire holes 410 and second fire holes 420 spaced apart from each other. However, in other embodiments, the flame stabilizing holes 430 are also included in the fire cover 400 as shown in FIG. 4. The flame stabilizing holes 430 are uniformly distributed on the fire cover 400 and are positioned near the first fire holes 410 and the second fire holes 420, the flame stabilizing holes 430 are communicated with the first mixing chamber 250, and the combustion can be more stable due to the arrangement of the flame stabilizing holes 430.

It is easily understood that the fire cover 400 of the present embodiment may be variously modified and replaced according to actual needs. The fire cover 400 shown in fig. 3 does not have the flame stabilizing hole 430. The first fire holes 410 and the second fire holes 420 are shown in fig. 4 at the same height position, and are equal in number and spaced apart.

Further, the fire cover 400 can be assembled by a plurality of independent components, so that the structure of each component is simplified, and the processing and the production are convenient. The individual components of the fire lid 400 may include a fire lid base, a divider, and a cover plate, wherein the fire lid base may be drilled or notched with various types of fire holes. Compare the traditional fire hole that obtains through drilling on integrative fire lid, adopt the processing mode of a plurality of independent subassemblies and grooving, can further simplify production manufacturing procedure, reduce cost.

Referring to fig. 2, it is easily conceived that the inner ring mixing chamber 240 has a ring structure, a cylindrical mounting hole 270 is formed at the middle portion of the inner ring mixing chamber 240, and an anti-dry heating probe can be disposed in the mounting hole 270.

A thick and thin gas range according to an embodiment of the present invention will be described in detail with specific embodiments with reference to fig. 1 to 4. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

Referring to fig. 1 and 2, the utility model provides a thick and thin gas cooker, which comprises an air inlet valve 100, a burner 200, an inner ring fire cover 300 and a fire cover 400.

The furnace end 200 is provided with three injection pipes, namely a first injection pipe 210, a second injection pipe 220 and a third injection pipe 230. The furnace end 200 is provided with an inner ring mixing cavity 240, a first mixing cavity 250 and a second mixing cavity 260 which are independent of each other, wherein the first injection pipe 210 is communicated with the second mixing cavity 260, the second injection pipe 220 is communicated with the inner ring mixing cavity 240, and the third injection pipe 230 is communicated with the first mixing cavity 250. The inner ring fire cover 300 covers the upper part of the inner ring mixing cavity 240, and an inner ring fire hole communicated with the inner ring mixing cavity 240 is formed in the inner ring fire cover 300. The fire cover 400 covers the first mixing chamber 250 and the second mixing chamber 260, a first fire hole 410 communicated with the first mixing chamber 250 and a second fire hole 420 communicated with the second mixing chamber 260 are arranged on the fire cover 400, and the first fire hole 410 and the second fire hole 420 are distributed at intervals. The burner 200 is further provided with two symmetrically distributed secondary air supplement channels 280, the inlets of the secondary air supplement channels 280 are communicated with the outside, and the outlets of the secondary air supplement channels 280 are located between the inner ring mixing cavity 240 and the first mixing cavity 250. After entering the air cavity between the inner ring mixing cavity 240 and the first mixing cavity 250 through the secondary air supplement channel 280, the external air can be secondarily mixed with the fuel gas in the inner ring mixing cavity 240, the first mixing cavity 250 and the second mixing cavity 13, so that the fuel gas is fully combusted, the heat efficiency is improved, and the energy is saved. The present embodiment is further provided with annular passages through which the mixed gas passes, respectively, below the secondary air replenishing passage 280. The annular channel for mixed gas to pass through is arranged below the secondary air supplementing channel 280, so that the mixed gas can respectively pass through the upper surface and the lower surface of the secondary air supplementing channel 280, the circulation of the mixed gas is increased, and the condition of uneven fire power distribution is reduced.

The air inlet valve 100 is provided with a first nozzle 110, a second nozzle 120 and a third nozzle 130, the first nozzle 110 extends into the first injection pipe 210, the second nozzle 120 extends into the second injection pipe 220, the third nozzle 130 extends into the third injection pipe 230, and the nozzles and the injection pipes are connected in a one-to-one correspondence manner. The intake valve 100 is further provided with a first valve switch 140 and a second valve switch 150, wherein the first valve switch 140 controls the second nozzle 120 independently to supply the gas to the inner ring mixing chamber 240; the second valve switch 150 simultaneously controls the first nozzle 110 and the third nozzle 130 while supplying the gas to the first mixing chamber 250 and the second mixing chamber 260.

A plurality of induced air holes are respectively formed in the first nozzle 110 and the third nozzle 130, six surfaces of the induced air holes are circumferentially distributed on the first nozzle 110 and the third nozzle 130, so that air enters the nozzles from multiple directions and is uniformly mixed with gas to obtain mixed gas. The air inducing holes of the first nozzle 110 are light flame inducing holes 111, and the air inducing holes of the third nozzle 130 are thick flame inducing holes 131. The aperture 111 of the light flame draft hole is larger than the aperture of the thick flame draft hole 131. Wherein, the aperture of the thick flame air inducing hole 131 is 2-3.5mm, preferably 2.5mm, and the aperture of the light flame air inducing hole 111 is 3.2-4.5mm, preferably 3.8 mm. Different amounts of primary air can be respectively introduced into the induced air holes with different sizes, so that the air-fuel ratio of the mixed gas is different, and the mixed gas with two different concentrations is obtained. Specifically, the aperture of the thick flame air inducing hole 131 is small, the amount of introduced primary air is small, the concentration of mixed gas is high, the mixed gas sequentially passes through the third injecting pipe 230 and the first mixing cavity 250 and then is output to the first fire hole 410 for combustion, and thick flame with higher temperature is generated after combustion; the aperture of the light flame inducing hole 111 is large, the amount of introduced primary air is large, the concentration of mixed gas is low, the mixed gas sequentially passes through the first injecting pipe 210 and the second mixing cavity 260 and then is output and combusted in the second fire hole 420, and light flame with lower temperature is generated after combustion. Because first fire hole 410 and second fire hole 420 interval set up to realize the alternate combustion mode of main burner shade, reduce combustion temperature, make the gas combustion more abundant, with this formation that restraines nitrogen oxide.

Further, referring to fig. 1, in order to improve the air-fuel ratio difference between the first mixing chamber 250 and the second mixing chamber 260, the first injection pipe 210 is further provided with an injection pipe air hole 212 in the embodiment. The function of the air hole 212 of the ejector pipe is consistent with that of the air hole on the nozzle, and the air hole is used for introducing air. Through set up on first injection pipe 210 and draw injection pipe wind hole 212, can introduce the air again, reduce the gas concentration in first injection pipe 210 to guarantee the realization of the alternate combustion mode of main burner rich and lean.

In addition, each injection pipe is also provided with a damper plate 211 with an adjustable opening. Except that adjusting the air-fuel ratio of mixing the gas through induced air hole and ejector pipe wind hole, the air-fuel ratio of mixing the gas can further be finely tuned through adjusting air door plant 211 to this embodiment, and through the aperture size that changes air door plant 211, realizes mixing the further adjustment of gas, and the burning of thick and thin flame of more accurate control ensures going on smoothly of thick and thin burning.

In this embodiment, the air inducing holes 111 and 131 and the air hole 212 of the ejector pipe are all circular, so as to facilitate processing.

Further, as shown in fig. 2, the inclined angle of the inclined curved surface between the injection pipe and the mixing cavity is 30-60 degrees, and smooth gas delivery is ensured through the inclined curved surface. Preferably, the inclined angle of the inclined curved surface between the injection pipe and the inner ring mixing chamber 240 is 50 degrees, and the inclined angle of the inclined curved surface between the injection pipe and the first mixing chamber 250 or the second mixing chamber 260 is 40 degrees.

Referring to fig. 3, only the first fire hole 410 and the second fire hole 420 are formed on the fire cover 400 of the present embodiment. It should be understood that the fire cover 400 as a single component may be modified and replaced in various configurations according to actual needs. As shown in fig. 4, the first fire holes 410 and the second fire holes 420 are located at the same height, and are equal in number and spaced apart from each other.

Referring to fig. 5, the present invention provides an intake valve 100 according to another embodiment, which has a structure substantially the same as that of the intake valve according to the first embodiment of the present invention, except that, as shown in fig. 5, a second stage air inducing hole 112 is provided on the first nozzle 110 in addition to the light flame air inducing hole 111. Through the secondary air guide holes 112, the first nozzle 110 can introduce more air for a plurality of times, so that mixed gas with different concentration from that of the third nozzle 130 is obtained.

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 thick and thin gas stove is characterized by comprising:

the fuel head comprises a fuel head (200), wherein two or more than two injection pipes are arranged on the fuel head (200), a first mixing cavity (250) and a second mixing cavity (260) are arranged on the fuel head (200), and the first mixing cavity (250) and the second mixing cavity (260) are respectively connected with at least one injection pipe;

the fire cover (400) covers the first mixing cavity (250) and the second mixing cavity (260), first fire holes (410) and second fire holes (420) are distributed at intervals on the fire cover (400), the first fire holes (410) are communicated with the first mixing cavity (250), and the second fire holes (420) are communicated with the second mixing cavity (260);

the air inlet valve (100), be provided with a plurality of nozzles on air inlet valve (100), the nozzle with draw and penetrate a tub one-to-one, the nozzle stretches into the correspondence respectively draw and penetrate intraductal and through drawing penetrating a tub intercommunication mixing chamber, the intercommunication be third nozzle (130), the intercommunication of first mixing chamber (250) be first nozzle (110) of second mixing chamber (260), third nozzle (130) with the induced air hole has been seted up on first nozzle (110) respectively, just third nozzle (130) with set up on first nozzle (110) the total area in induced air hole is different.

2. A thick and thin gas stove as claimed in claim 1, characterized in that the first mixing chamber (250) and the second mixing chamber (260) are coaxially arranged annular chambers and are arranged in sequence from inside to outside.

3. A thick and thin gas-cooker according to claim 2, characterized in that still be provided with inner ring hybrid chamber (240) on furnace end (200), inner ring hybrid chamber (240) and first hybrid chamber (250) are the annular chamber and follow the same shaft setting in proper order from inside to outside, inner ring hybrid chamber (240) is through drawing penetrating the second nozzle (120) of union coupling setting on admission valve (100), inner ring hybrid chamber (240) coats and is stamped inner ring fire lid (300), be provided with the intercommunication on the inner ring fire lid (300) inner ring fire hole of inner ring hybrid chamber (240).

4. A thick and thin gas stove as claimed in claim 3, characterized in that an air supplementary gap (241) is left between the inner ring mixing chamber (240) and the first mixing chamber (250); and a secondary air supplement channel (280) is further arranged on the furnace end (200), and the secondary air supplement channel (280) penetrates through the first mixing cavity (250) and the second mixing cavity (260) and communicates the outer side of the furnace end with the air supplement gap.

5. A thick and thin gas stove as claimed in claim 1, wherein the air inducing holes comprise thick flame inducing holes (131) and thin flame inducing holes (111), the thin flame inducing holes (111) are formed on the first nozzle (110), the thick flame inducing holes (131) are formed on the third nozzle (130), and the total area of the thin flame inducing holes (111) is larger than that of the thick flame inducing holes (131).

6. A thick and thin gas stove as claimed in claim 5, characterized in that the diameter of the thin flame draught hole (111) is larger than that of the thick flame draught hole (131).

7. A thick and thin gas stove as claimed in claim 1, characterized in that the third nozzle (130) and the first nozzle (110) are respectively provided with a plurality of air guiding holes, and the air guiding holes are respectively distributed on the third nozzle (130) and the first nozzle (110) in a multi-surface surrounding way.

8. A thick and thin gas range as claimed in claim 7, wherein the air inducing holes are divided into a plurality of groups, and the distances from the air inducing holes of different groups to the outlet of the first nozzle (110) are different.

9. A thick and thin gas stove as claimed in claim 1, wherein the injection pipe is provided with an injection pipe air hole (212).

10. A thick and thin gas stove as claimed in claim 1, wherein the injection pipe is provided with a damper plate (211) with adjustable opening.

Images