CN209295132U - A kind of ejector pipe for gas-cooker - Google Patents

Abstract

The utility model relates to a kind of ejector pipes for gas-cooker, at least two injectors for including air intake end and being correspondingly arranged with the air intake end, it is characterized by also including have at least one conducting element, the conducting element has shim position, the first end at the shim position is at least locally plugged in the air intake end of ejector pipe, injection tube chamber positioned at the shim position two sides is opposite with corresponding two injectors respectively, compared with prior art, the utility model has the advantage of centres or neighbouring middle position that conducting element is located at two neighboring injector, it can avoid interfering with each other between injection initial stage air-flow stock, increase primary air increment, promote being mutually mixed between the air-flow stock and air that enter injection tube cavity, so that combustion gas and air are more fully mixed, when fuel gas high-speed is sprayed from jet hole, by surrounding one Into in ejector pipe, the two starts to mix secondary air ejection, finally also keeps in case of higher speeds, mixing in advance in mixed gas.

Description

A kind of ejector pipe for gas-cooker

Technical field

The utility model relates to gas-cooker field more particularly to a kind of ejector pipes.

Background technique

The core for improving atmospheric burner efficiency is exactly to improve primary air ratio, enhances ejector capacity.So how Improve the coefficient of first order of atmospheric burner? technical staff has done a variety of improvement to the structure of ejector pipe, setting, such as authorizes public It accuses in number Chinese utility model " gas utensil combusting device stove burner injector " for being CN202392805U and discloses a kind of injector, wrap Include outer ring nozzle, inner ring nozzle, air door air regulating board, air door fixed plate, air door spring and burner, the air door air regulating board, wind Door fixed plate and air door spring are separately mounted to above outer ring nozzle and inner ring nozzle, and outer ring nozzle and inner ring nozzle and burner connect It connects, it is characterised in that: the burner injector rear end tails periphery is equipped with airport.Although the utility model is in injector Rear end tails setting airport can increase primary air amount to a certain extent, but since airport enters the wind track and injector The injection track of nozzle is in mutually perpendicular plane, so air can interfere nozzle to combustion when entering ejector pipe from airport The injection of gas, while the ability of airport increase air is also limited.

Traditional atmospheric burner generally uses one-jet ejector pipe, and one-jet mass ratio of induced-to-inducing air generally only has 0.45 ~0.65 or so, and flame length is uneven, it is weak and feeble.For the ejector capacity for increasing ejector pipe, occur currently on the market Multiinjector draws the burner of ejector pipe, but due to the horn mouth of the ejector pipe, shout mouth cross section or traditional circle, The injection initial stage of this kind of multiinjector ejector pipe can interfere with each other, and influence induction efficiency, and combustion gas fails after injection enters ejector pipe It is sufficiently mixed with the air for entering ejector pipe, to influence primary air ratio, and then influences the burning efficiency of burner.Thus It is practical new that the applicant such as Patent No. ZL201310122553.X (Authorization Notice No. CN103234201B) discloses China Type patent " a kind of ejector pipe ", the cross section for the cavity that the horn mouth of the ejector pipe surrounds are justified ellipse by several circles or several approximations Circle intersects, and the center of circle or elliptical center of these circles are located on same first circle, and the center of circle relative to the first circle is uniform Distribution, the nozzle being adapted to the ejector pipe are set at the center of circle or center, and the number of the nozzle and these circles Or elliptical number is equal, the nozzle number which can be adapted to be it is multiple, compared with single injector ejector pipe, ejector pipe can be enhanced Ejector capacity, if two nozzles of this ejector pipe adaptation, need to be tilted a certain angle to each other, so that two nozzles sprayed High-speed fuel gas collisional mixing, so that air and combustion gas mixing that injection is entered are more abundant, to reach the higher thermal efficiency and more The purpose of low CO discharge amount, but the nozzle inclination angle of such structural requirement, almost can not guarantee in actual processing, practical On in processing, the centre bores of two nozzles is parastate, weakens the effect of mixing, does not reach height representated by dual-jet Effect mixing, so that not getting a desired effect in performance boost.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of ejector capacity for above-mentioned state of the art By force, the good ejector pipe for gas-cooker of gas effect is mixed.

Technical solution adopted by the utility model to solve the above technical problems is as follows: the ejector pipe, includes air intake end And at least two injectors being correspondingly arranged with the air intake end, it is characterised in that: it further include having at least one conducting element, The conducting element has a shim position, and the first end at the shim position be at least locally plugged in the ejector pipe enter gas In mouth end, the injection tube chamber positioned at the shim position two sides is opposite with corresponding two injectors respectively.

Preferably, the shim position of the conducting element, the second end at the air intake end far from the ejector pipe with it is right There is spacing between two injectors answered.I.e. along airflow direction, the conducting element is located in two adjacent injectors Between upstream position.When fuel gas high-speed is sprayed from injector, by surrounding primary air injection into ejector pipe, the two starts to mix Close, when high mixing gas pass through conducting element when, due to wall attachment effect, the high-speed flow injection direction of conducting element two sides start to Intermediate conducting element is drawn close, and finally also keeps in case of higher speeds, to mix in advance in mixed gas so that combustion gas and Primary air mixing is more preferable.

Further, the conducting element and plane where the axis of two adjacent injectors are perpendicular.

It is tempered in order to prevent, further includes having to prevent on the corresponding nozzle end face in the air intake end that the ejector pipe is arranged in Tempering cover, the section of the backfire grid is in inverted U-shaped.

In order to preferably shelve backfire grid, the corresponding nozzle end face in the air intake end of the ejector pipe is in inverted T-type, With interconnected horizontal tube and vertical duct, the injector corresponds to the horizontal tube setting, and the vertical duct upwardly extends And support the backfire grid.

In order to better play the wall attachment effect of conducting element, the U-shaped backfire grid includes horizontal part, the water conservancy diversion The root of part is then inserted on horizontal part, and the free end of the conducting element be respectively positioned on two adjacent injectors axis it Under.

Further, between the least significant end of the free end of the conducting element and the axis of two adjacent injectors Distance d1 meets: 3mm≤d1≤5.5mm.Distance d1 is excessive, and the high-speed flow injection direction for being unfavorable for conducting element two sides starts It is drawn close to centre, too small conducting element does not have corresponding guide functions then.

Preferably, relatively described adjacent two injector of the conducting element on the airflow direction of the horizontal tube simultaneously D2 is arranged at certain intervals, and the interval d2 meets: 1.2mm≤d2≤2.8mm.The conducting element is closer to injector, guiding The performance that the high-speed flow of injector two sides is drawn close to intermediate conducting element is more sensitive.

The structure of conducting element can there are many, with structure it is simple from the point of view of, the conducting element is plate-like, the water conservancy diversion The horizontal width of part is 3~12mm.For deflector closer to injector, performance is more sensitive, and conducting element in a certain range get over by width Narrow more effect is better, and performance is also more sensitive.

In order to ensure conducting element and plane where the axis of two adjacent injectors are perpendicular, the root of the conducting element The first position-limit foot including the axis direction extension along the horizontal tube, accordingly, the inner sidewall of the vertical duct has for institute State the first socket that the first position-limit foot plugs.

In order to which further effectively fixed conducting element is on backfire grid, the root of the conducting element further includes having with described the Centered on one position-limit foot and it is separately positioned on the second position-limit foot and third position-limit foot of the first position-limit foot two sides, accordingly, The horizontal part has the second socket and third socket plugged respectively for second position-limit foot and third position-limit foot.

Preferably, second position-limit foot also has left-leaning and bending upwards the second bending part and/or third limit Position foot also has the third bending part of Right deviation and upward bending.Second bending part and/or third bending part can be preferably by second Position-limit foot and third position-limit foot are plugged on the second socket and third socket.

Compared with prior art, the utility model has the advantage of the first ends at conducting element shim position at least locally to insert It is located in the air intake end of ejector pipe, can avoid interfering with each other between injection initial stage air-flow stock, increase primary air increment, Promote being mutually mixed between the air-flow stock and air that enter injection tube cavity, so that combustion gas and air are more fully mixed, is conducive to The combustibility for promoting burner, when fuel gas high-speed is sprayed from jet hole, by surrounding primary air injection into ejector pipe, the two Start to mix, when high mixing gas passes through conducting element, due to wall attachment effect, the high-speed flow injection direction of conducting element two sides Start to draw close to intermediate conducting element, finally also keep in case of higher speeds, mixing in advance in mixed gas, so that combustion Gas and primary air mixing are more preferable, are conducive to burn more abundant, the thermal efficiency is higher, and the discharge amount of exhaust gas such as CO are lower.

Detailed description of the invention

Fig. 1 is that the air intake end of the utility model embodiment ejector pipe is fitted with the structural schematic diagram of injector；

Fig. 2 is the cross-sectional view of mono- angle of Fig. 1；

Fig. 3 is that conducting element is located at the upper of adjacent the first injector and the second injector in the utility model embodiment Swim middle position；

Fig. 4 is the structural schematic diagram of ejector pipe in the utility model embodiment；

Fig. 5 is the structural schematic diagram of conducting element in the utility model embodiment；

Fig. 6 is the structural schematic diagram of backfire grid in the utility model embodiment；

Fig. 7 is the structural schematic diagram of another angle of Fig. 1；

Fig. 8 is the distribution schematic diagram of injector and conducting element in the utility model embodiment 2；

Fig. 9 is the distribution schematic diagram of middle injector and conducting element in the utility model embodiment 3.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

Embodiment 1

As shown in figs. 1 to 6, the present embodiment is the optimal embodiment of the utility model.The present embodiment for gas-cooker Ejector pipe 1 includes air intake end 11 and at least two injectors being correspondingly arranged with air intake end 11, further includes having at least One conducting element 4, which has shim position, and the first end 401 at the shim position at least part is plugged in In the air intake end 11 of ejector pipe 1, positioned at the shim position two sides injection tube chamber respectively with corresponding two injectors Relatively.The present embodiment is opened up for as the first injector 2 and the second injector 3 and a conducting element 4 with two injectors Description, the shim position of conducting element 4 are opened, the second end 402 at the air intake end 11 far from ejector pipe 1 is sprayed with corresponding two There is spacing, i.e., along airflow direction, conducting element 4 is located at the upstream position among two adjacent injectors between emitter.Work as combustion Gas high speed is sprayed from injector, and by surrounding primary air injection into ejector pipe 1, the two starts to mix, and works as high mixing gas When by conducting element 4, due to wall attachment effect, the high-speed flow injection direction of 4 two sides of conducting element starts to lean on to intermediate conducting element 4 Hold together, finally also keep in case of higher speeds, to mix in advance in mixed gas, so that combustion gas and primary air mixing are more Good, preferably conducting element 4 and plane where the axis of the first injector 2 and the second injector 3 is perpendicular.

It is tempered in order to prevent, further includes having on the corresponding nozzle end face 111 in air intake end 11 that ejector pipe 1 is set Backfire grid 5, the section of backfire grid 5 are in inverted U-shaped, and in order to preferably shelve backfire grid 5, the first ejector pipe 1 The corresponding nozzle end face 111 in air intake end 11 is in inverted T-type, has interconnected horizontal tube 1111 and vertical duct 1112, Injector corresponds to horizontal tube 1111 and is arranged, the backfire grid 5 that vertical duct 1112 is upwardly extended and supported, and in order to better play The wall attachment effect of conducting element 4, U-shaped backfire grid 5 include horizontal part 51, and the root of conducting element 4 is then inserted in horizontal part 51 On, and the free end 41 of conducting element 4 is respectively positioned under the axis of adjacent the first injector 2 and the second injector 3.In addition, leading The least significant end and the distance between the axis of the first injector 2 or the second injector 3 d1 for flowing the free end 41 of part 4 meet: 3mm≤ d1≤5.5mm.Distance d1 is excessive, and the high-speed flow injection direction for being unfavorable for 4 two sides of conducting element starts to draw close to centre, too small Conducting element 4 does not have corresponding guide functions then.Preferably, conducting element 4 is with respect to the first injector 2 and the second injector 3 in water On the airflow direction of flat pipe 1111 and d2 setting at certain intervals, interval d2 meet: 1.2mm≤d2≤2.8mm, wherein lead Part 4 is flowed closer to injector, and the performance that the high-speed flow of pilot injector two sides is drawn close to intermediate conducting element 4 is more sensitive, leads Flow part 4 structure can there are many, with structure it is simple from the point of view of, conducting element 4 is plate-like, plate-like 4 surface of conducting element It is smooth, cannot be jagged, wherein the horizontal width of conducting element 4 is 3~12mm, and for deflector closer to injector, performance is more sensitive, The width the narrow in a certain range more effect is better for conducting element 4, and performance is also more sensitive, and the horizontal width of conducting element 4 is preferably 5mm。

In order to ensure conducting element 4 and plane where the axis of the first injector 2 and the second injector 3 are perpendicular, conducting element 4 Root include along horizontal tube 1111 axis direction extend the first position-limit foot 42, accordingly, the inner sidewall of vertical duct 1112 With the first socket 1113 plugged for the first position-limit foot 42, in order to which further effectively fixed conducting element 4 is on backfire grid 5, The root of conducting element 4 further includes for having centered on the first position-limit foot 42 and being separately positioned on 42 two sides of the first position-limit foot Two position-limit foots 43 and third position-limit foot 44, accordingly, horizontal part 51 has supplies the second position-limit foot 43 and third position-limit foot 44 respectively The second socket 511 and third socket 512 plugged.Preferably, the second position-limit foot 43 also has the second of left-leaning and upward bending Bending part 431 and/or the also third bending part 441 with Right deviation and upward bending of third position-limit foot 44, the second bending part 431 And/or the second position-limit foot 43 and third position-limit foot 44 preferably can be plugged in the second socket 511 and third by third bending part 441 On socket 512, since conducting element 4 is located at the centre or neighbouring middle position of two neighboring injector, injection initial stage gas can avoid Interfering with each other between stream stock, increases primary air increment, promotes the air-flow stock for entering 1 inner cavity of ejector pipe and the phase between air Mutually mixing is conducive to the combustibility for promoting burner so that combustion gas and air are more fully mixed, when fuel gas high-speed is from jet hole It sprays, by surrounding primary air injection into ejector pipe 1, the two starts to mix, when high mixing gas passes through conducting element 4, Due to wall attachment effect, the high-speed flow injection direction of 4 two sides of conducting element starts to draw close to intermediate conducting element 4, is finally mixing Gas also keeps in case of higher speeds, mixing in advance, so that combustion gas and primary air mixing are more preferable, is conducive to burning more Sufficiently, the thermal efficiency is higher, and the discharge amount of exhaust gas such as CO are lower.

Embodiment 2

Essentially identical with the structure of embodiment 1, difference is: the ejector pipe 1 of the present embodiment includes air intake end 11 And three injectors being correspondingly arranged with air intake end 11, three injectors are respectively the first injector 2 ', the first injection Device 3 ' and third injector 33 ', the first injector 2 ', the first injector 3 ' and third injector 33 ' are in Chinese character pin-shaped, and phase There is conducting element 4 between adjacent injector two-by-two, as shown in Figure 8.

Embodiment 3

Essentially identical with the structure of embodiment 1, difference is: the ejector pipe 1 of the present embodiment includes air intake end 11 And five injectors being correspondingly arranged with air intake end 11, five injectors are respectively the first injector 2 ", the first injection Device 3 ", third injector 33 ", the 4th injector 34 ' and the 5th injector 35 ', the first injector 2 ", the first injector 3 ", Third injector 33 ', the 4th injector 34 ' and the 5th injector 35 ' are in blossom type, and are had between adjacent injector two-by-two Conducting element 4, as shown in Figure 9.

Claims (12)

1. a kind of ejector pipe for gas-cooker includes air intake end (11) and is correspondingly arranged with the air intake end (11) At least two injectors (2,3), it is characterised in that: further include having at least one conducting element (4), the conducting element (4) have point Partition position, and the first end (401) at the shim position at least part is plugged in the air intake end of the ejector pipe (1) (11) in, the injection tube chamber positioned at the shim position two sides is opposite with corresponding two injectors (2,3) respectively.

2. the ejector pipe according to claim 1 for gas-cooker, it is characterised in that: the shim of the conducting element (4) Position has between the second end (402) at the air intake end (11) far from the ejector pipe and corresponding two injectors (2,3) There is spacing.

3. the ejector pipe according to claim 2 for gas-cooker, it is characterised in that: the conducting element (4) and the phase Plane where the axis of two adjacent injectors (2,3) is perpendicular.

4. the ejector pipe according to any one of claims 1 to 3 for gas-cooker, it is characterised in that: further include setting The backfire grid (5) on the corresponding nozzle end face (111) in the air intake end (11) of the ejector pipe (1) is set, it is described to prevent back Fire cover (5) is in inverted U-shaped.

5. the ejector pipe according to claim 4 for gas-cooker, it is characterised in that: the air intake of the ejector pipe (1) Holding (11) corresponding nozzle end face (111) is in inverted T-type, has interconnected horizontal tube (1111) and vertical duct (1112), the injector corresponds to the horizontal tube (1111) setting, and the vertical duct (1112) upwardly extends and supports described Backfire grid (5).

6. the ejector pipe according to claim 5 for gas-cooker, it is characterised in that: the backfire grid (5) of the inverted U Include horizontal part (51), the root of the conducting element (4) is then inserted on horizontal part (51), and the conducting element (4) from By holding (41) to be respectively positioned under the axis of two adjacent injectors (2,3).

7. the ejector pipe according to claim 6 for gas-cooker, it is characterised in that: the free end of the conducting element (4) (41) the distance between least significant end and the adjacent axis of two injectors d1 meet: 3mm≤d1≤5.5mm.

8. the ejector pipe according to claim 7 for gas-cooker, it is characterised in that: the conducting element (4) is relatively described Adjacent two injector (2,3) Yu Suoshu horizontal tube (1111) airflow direction on and at certain intervals d2 be arranged, institute It states interval d2 to meet: 1.2mm≤d2≤2.8mm.

9. the ejector pipe according to claim 7 for gas-cooker, it is characterised in that: the conducting element (4) is plate-like, institute The horizontal width for stating conducting element (4) is 3~12mm.

10. the ejector pipe according to claim 6 for gas-cooker, it is characterised in that: wrap the root of the conducting element (4) Include the first position-limit foot (42) of the axis direction extension along the horizontal tube (1111), accordingly, the vertical duct (1112) Inner sidewall has the first socket (1113) plugged for first position-limit foot (42).

11. the ejector pipe according to claim 10 for gas-cooker, it is characterised in that: the root of the conducting element (4) It further include the second limit for having centered on first position-limit foot (42) and being separately positioned on the first position-limit foot (42) two sides Position foot (43) and third position-limit foot (44), accordingly, the horizontal part (51) have supply respectively second position-limit foot (43) and The second socket (511) and third socket (512) that third position-limit foot (44) plugs.

12. the ejector pipe according to claim 11 for gas-cooker, it is characterised in that: second position-limit foot (43) is also Also there is Right deviation and upwards folding with left-leaning and bending upwards the second bending part (431) and/or the third position-limit foot (44) Curved third bending part (441).