CN108343964B - The fire cover of burner for gas-cooker, the burner of gas-cooker and gas-cooker - Google Patents

Abstract

A kind of fire cover of the present invention about burner for gas-cooker, a kind of fire cover (2) of burner for gas-cooker of the burner and gas-cooker of gas-cooker, including lower cover (10), the bottom of the lower cover (10) is formed with the recessed portion (15) for accommodating combustion gas, the lower cover (10) is equipped with the fire output hole (150) of multiple connection recessed portions (15), the fire cover (2) further includes the upper cover body (20) being covered on the lower cover (10), air gas flow path (100) are formed between the upper cover body (20) and the lower cover (10).Technical solution of the present invention can either the sufficient auxiliary air of region supplement near fire output hole, and do not disturb burned flame, it is ensured that abundant, the stable burning of the combustion gas of burner.

Description

The fire cover of burner for gas-cooker, the burner of gas-cooker and gas-cooker

[technical field]

The present invention relates to gas-cooker fields, refer in particular to the combustion of the fire cover, gas-cooker of a kind of burner for gas-cooker Burner and a kind of gas-cooker.

[background technique]

Before combustion, the air pre-mixing that first suck with ejector pipe, mixed combustion gas is through burning for the combustion gas of gas-cooker The fire output hole of device is flowed out and is ignited, and forms flame.The air being used for combustion gas mixing that will usually be sucked by ejector pipe in the industry Referred to as primary air, and the air that combustion gas is supplemented in burning is known as auxiliary air, is generally flowed by burner surrounding air Auxiliary air when supply burning.

But many times, the air flowing around burner can not meet needed for burning.Especially consumed in recent years The big burner of the thermic load of person's favor is not only able to satisfy combustion needs by the air flowing around burner completely, is easy Cause to burn insufficient, the thermal efficiency is low, moreover, fuel gas buring is insufficient, can generate to human body and the harmful gas of environment.

[summary of the invention]

It is an object of the present invention at least one above technical problem, provide a kind of improved for gas-cooker The fire cover of burner, the burner of gas-cooker and gas-cooker.

To reach above-mentioned technical purpose, present invention firstly provides a kind of the following technical solutions: a kind of for gas-cooker The fire cover of burner, including lower cover, the bottom of the lower cover are formed with the recessed portion for accommodating combustion gas, set on the lower cover There is the fire output hole of multiple connection recessed portions, wherein the fire cover further includes the upper cover body being covered on the lower cover, Air gas flow path is formed between the upper cover body and the lower cover.

It should be noted that " combustion gas " mentioned by the present invention is not limited to pure combustion gas, it further includes and air pre-mixing Fuel gas mixture afterwards.For example, with the fuel gas mixture after the air pre-mixing of sucking at ejector pipe.

When burner combustion, the root area of i.e. flame is added since high temperature causes pressure larger near fire output hole Limitation spatially, the air around burner can not reach this region, and therefore, this region needs most supplement auxiliary air Region.If supplementing auxiliary air to burner using the component independently of fire cover, to add to the region near fire output hole, The outgassing direction of air is inevitable towards fire output hole, although auxiliary air can be supplemented in this way, the airflow direction of auxiliary air with Fuel gas flow direction is substantially opposite, and the air-flow of auxiliary air easily causes flame shake, combustion instability.

The beneficial effects of the present invention are air gas flow path can provide sufficient auxiliary air to fuel gas buring.Moreover, Air gas flow path is set in fire cover, and air is flowed outwardly by fire cover, the trend of air draught direction and combustion gas generally one Cause, can either the sufficient auxiliary air of region supplement near fire output hole, and do not disturb burned flame, it is ensured that burner On abundant, the stable burning of combustion gas.

In a kind of possible embodiment, the upper cover body is covered on the lower cover and forms the appearance for accommodating air The appearance air cavity is in communication with the outside by air cavity, the air gas flow path.Air passes through air draught after converging to appearance air cavity again Channel flows to the external world.Buffer air air-flow can be played the role of by holding air cavity, keep air uniform from each air gas flow path, stable Ground outflow.

In a kind of possible embodiment, the gas outlet of the air gas flow path is located at the top of the fire output hole. Since burner is in burning, flame is all upwardly extended.Moreover, fire output hole is contaminated in order to prevent or blocks, fire output hole It is generally located on the side wall surface of burner or fire cover, to form the annular flame that a circle tilts upward extension on the burner. And the region above fire output hole has burner or the wall surface of fire cover to stop, the air of burner internal is unable to reach the region, and The flame combustion of one ring shape causes pressure big, and the air outside flame zone is also not easily accessible to the region above fire output hole.And this Embodiment but just solves this technical problem, and the flame of fire output hole is made more fully to burn.

In a kind of possible embodiment, the every two adjacent corresponding air gas flow path of the fire output hole Gas outlet, and every two adjacent fire output hole gas outlet corresponding with its in isosceles triangle be distributed.To air gas Circulation road delivers air near each fire output hole, and the root area of each flame can add to air, realizes air Uniformly output and distribution, the combustion gas for flowing out the fire output hole in entire fire cover are all uniformly burnt.

In a kind of possible embodiment, the outlet of the corresponding air gas flow path of each fire output hole Minimum range between mouthful is center line air gas corresponding with its of 0.5mm~3mm and/or each fire output hole The angle of the center line of the outlet port of circulation road is 0 °~45 °.The distance between fire output hole and air gas flow path gas outlet Too far, air can not be transported near fire output hole, and the root area of flame can not add to sufficient auxiliary air；And if Towards the direction of fire output hole, air draught is easy to disturbance fuel gas flow in the direction of the gas outlet of air gas flow path, causes fire Flame shake, combustion instability.The improvement of present embodiment can solve this technical problem, deliver the air to fire output hole area nearby Domain.The fuel gas flow head-on collision that the air draught direction that air gas flow path comes out will not come out with fire output hole, does not interfere combustion gas gas It flows and flame is caused to shake or shake, fuel gas buring is stablized.

In a kind of possible embodiment, the upper cover body and the lower cover are in lower spill and/or the upper cover The outer diameter of body is greater than the outer diameter of the lower cover.The structure design of concave shape can both realize the outside that fire output hole is set to fire cover On wall, prevent overflow or soup from blocking fire output hole, meanwhile, and the direction of fire output hole can be made to tilt upward, flame concentrates heating The bottom of a pan, heating efficiency are high.The outer diameter of the upper cover body be greater than the lower cover outer diameter, upper cover body can block spilling water, Soup or solid prevent overflow from polluting or blocking the fire output hole and air gas flow path on lower cover.

In a kind of possible embodiment, the lower cover includes the first lateral wall, and the upper cover body includes outside second Side wall, multiple fire output holes are located at first lateral wall, multiple institutes are formed between the upper cover body and the lower cover Air gas flow path is stated, the gas outlet of multiple air gas flow paths is formed in first lateral wall or second outside Wall.To prevent fire output hole and air gas flow path from blocking.Wherein, the first lateral wall is understood to include by lower cover The outer wall that top extends downwardly, the first lateral wall include without being only limitted to the outer wall perpendicular with the supporting plane of lower cover.Class As, the second lateral wall is understood to include the outer wall extended downwardly by the top of upper cover body, and the second lateral wall includes without only It is limited to the outer wall perpendicular with the supporting plane of upper cover body.

In a kind of possible embodiment, the lower cover has roof, and the upper cover body has and the roof phase The upper bottom wall of cooperation, under the use state of the fire cover, the roof is in contact with the upper bottom wall, and the air draught is logical Road includes the first groove for being formed in roof or the upper bottom wall.As it can be seen that the beneficial effect of the improvements of the present embodiment embodies , it can be molded or the mode of forging and forming forms the first groove, the air draught for facilitating manufacture non-rectilinear to extend Channel, and the first groove all in fire cover can be disposably formed, it is at low cost.

In a kind of possible embodiment, the lower cover has the recess towards the upper cover body, the upper cover body With the convex wall matched with the recess, under the use state of the fire cover, the recess is in contact with the convex wall, institute Stating air gas flow path further includes the second groove for being formed in the recess or the convex wall, second groove and described first Groove connection.As it can be seen that the air gas flow path that the non-rectilinear of present embodiment extends is made of the first groove and the second groove, it is empty During passing through air gas flow path, direction changes once gas air-flow, brings certain fluid resistance, makes air gas flow path The air of upstream is adequately mixed, and air pressure is more uniform, so that air can be equably from each air gas flow path Outflow.In addition, it is easily manufactured using this programme, and be easy to disposably form air gas flow path all on burner.And if Air gas flow path is formed using common bore mode, cannot once form all channels, and the channel that non-rectilinear extends, During forming a channel, it is also necessary to change the fixed angle of lower cover or upper cover body on jig, it is time-consuming and cumbersome. If air gas flow path depth is big, drill bit is easily broken off in air gas flow path, and the upper cover body or lower cover is caused to be scrapped. And laser beam perforation is used, it is at high cost.

In a kind of possible embodiment, the lower cover has the recess towards the upper cover body, the upper cover body With the convex wall matched with the recess, under the use state of the fire cover, formed between the recess and the convex wall Gap, the gap constitute a part for accommodating the appearance air cavity of air.In this way, air gas flow path is only made of the first groove, Structure is simpler, can be molded or the mode of forging and forming is formed, and manufacture is more convenient, and product yield is higher.

In a kind of possible embodiment, the length of second groove is greater than the length of first groove, and institute The length for stating the second groove is 20mm~30mm.There is certain length due to the second groove, to bring to air flowing Certain resistance enables the air of air gas flow path upstream adequately to be mixed, so that air is relatively evenly from each Air gas flow path outflow.Wherein, the length of the first groove is interpreted as the size of the first groove in their extension direction.

In a kind of possible embodiment, the upper cover body and the lower cover are in circular ring shape, the lower cover it is interior Include the first composition portion end to end, that radial section is L-shaped at ring, includes joining end to end at the inner ring of the upper cover body , radial section be in inverted L-shaped the second composition portion, when the upper cover body is covered on the lower cover, first composition portion The appearance air cavity is formed with second composition portion, first composition portion is equipped at least one and enters the appearance gas for air The entrance of chamber.By above-mentioned improvement, when upper cover body is covered on lower cover, it is formed appearance air cavity naturally, compared in a copper Constructed on matter component one it is complete hold air cavity, the technical program structure is simple, manufacture it is more convenient, it is at low cost.Moreover, What this programme was formed is that end to end annular holds air cavity, air can be mixed at fire cover inner ring, each to be transported to Air pressure near fire output hole is identical.

In a kind of possible embodiment, it is formed between the upper cover body and the lower cover multiple radial Air gas flow path.It is uniformly distributed to which multiple air gas flow paths in entire fire cover can be realized, air passes through air draught During channel, flow more smooth.

Based on the purpose of the present invention, the present invention also provides a kind of burners of gas-cooker comprising is used for as described above The fire cover of the burner of gas-cooker.Burner of the invention is other than with benefit possessed by fire cover above-mentioned, present invention combustion For the appearance of burner there is no very big change occurs, consumer is acceptant.

In a kind of possible embodiment, the burner includes burner base and intermediate member, the fire cover position In in the burner base, the intermediate member between the burner base and the fire cover, the recessed portion with The burner base matches and is formed the chamber of a receiving combustion gas, and the burner base is equipped with air intake, institute Stating intermediate member includes hollow connecting cavity, and the entrance of the connecting cavity is directed at the air intake；The intermediate member has The outlet of first connecting cavity, the air of the first connecting cavity outlet outflow is directly or indirectly to the air gas flow path.Its In, air intake can be the opening communicated with atmosphere, and air intake also can connect the skies such as fan, air blower, air pump Gas generation device.Since intermediate member is between burner base and fire cover, under the use state of burner, intermediate member Be it is not exposed, be hidden between burner base and fire cover.To which adding for intermediate member does not change the outer of burner It sees.

In a kind of possible embodiment, the air intake is the opening communicated with atmosphere.It does not need additionally to be arranged Air generating device, so that it may meet the needs of burner combustion.

In a kind of possible embodiment, the upper cover body is covered on the lower cover and forms the appearance for accommodating air The appearance air cavity is in communication with the outside by air cavity, the air gas flow path, and the first connecting cavity outlet is directed at the appearance air cavity Entrance.

In a kind of possible embodiment, the fire cover is external ring fire cover, and the burner further includes interior ring fire cover, institute Stating interior ring fire cover includes lid portion and circular wall body portion, and the wall body portion limits the recessed portion of a receiving combustion gas, described Fire cover is equipped with the fire output hole of multiple connection recessed portions, and the wall body portion is equipped with air duct；The intermediate member is also It being exported with the second connecting cavity, first connecting cavity, which exports, is disposed around the outside that second connecting cavity exports, and described second Connecting cavity outlet is directed at the import of the air duct.The wall body portion of interior ring fire cover is equipped with air duct, and air is by wall body portion It flows outwardly, air draught direction and combustion gas move towards substantially uniform, region that can either inwardly near ring fire cover fire output hole Sufficient auxiliary air is supplemented, and does not disturb burned flame, it is ensured that abundant, the stable burning of combustion gas on interior ring fire cover. Improvement through the invention, the burning that the flame of the inner and outer ring of burner all can be abundant, stable.

In a kind of possible embodiment, the wall body portion be equipped with multiple air ducts, the air duct into Mouth is located at the bottom surface in the wall body portion, and notch section is formed in the wall body portion, and the outlet of the air duct is located at described lack Oral area.To which when fire cover covers, after burner assembles, the air of supply just enters air duct naturally from below.It is described The outlet of air duct is located at the notch section, can be convenient the manufacture of air duct, for example formed directly by boring bar tool Then the hole that line extends, the hole re-form notch section not through wall body portion, the outlet of air duct is formed naturally；Certainly, It can also be initially formed notch section, then drilled.The outlet of another convenience, air duct is located at notch section, can use wall body portion or lid The outlet of air duct is blocked at position in body portion, prevents air duct contaminated or blocking.

Here, the present invention also proposes a kind of gas-cooker comprising the burner of the upper gas-cooker.

[Detailed description of the invention]

Fig. 1 is the explosive view of the fire cover of one embodiment of the invention；

Fig. 2 is the cross-sectional view of the fire cover of one embodiment of the invention；

Fig. 3 is the explosive view of the burner of one embodiment of the invention；

Fig. 4 is the perspective view of the burner of one embodiment of the invention；

Fig. 5 is the cross-sectional view of the burner of one embodiment of the invention；

Fig. 6 is the perspective view of the burner base of one embodiment of the invention；

Fig. 7 is the perspective view of the intermediate member of one embodiment of the invention；

Fig. 8 is perspective view of the intermediate member shown in Fig. 7 under another angle；

Fig. 9 is the perspective view of the interior ring fire cover of one embodiment of the invention；

Figure 10 is the cross-sectional view of the interior ring fire cover of one embodiment of the invention.

Appended drawing reference:

1- burner；2- fire cover；3- burner base；4- intermediate member；Ring fire cover in 5-；10- lower cover；11- first Lateral wall；12- roof；13- recess；The first composition of 14- portion；15,50- recessed portions；20- upper cover body；The second lateral wall of 21-；22- Upper bottom wall；23- convex wall；The second composition of 24- portion；31,32- chambers；33- outer ring ejector pipe；34- inner ring ejector pipe；35- combustion gas is logical Road；36- air supply import；The outlet of 37- air supply；40- connecting cavity；41- flange；51- lid portion；52- wall body portion；100- Air gas flow path；100a- air inlet；The gas outlet 100b-；The first groove of 110-；The second groove of 120-；150,501- go out fire Hole；200- holds air cavity；The entrance of 201- appearance air cavity；301- air intake；The entrance of 401- connecting cavity；The first connecting cavity of 402- goes out Mouthful；The outlet of the second connecting cavity of 403-；500- air duct；500a- import；The outlet 500b-；510- hd top face；520- notch section； The bottom surface 521-；The inclined-plane 5201-.

[specific embodiment]

To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment detailed It is described as follows.

Here a kind of fire cover of burner for gas-cooker is first introduced, as depicted in figs. 1 and 2, wherein Fig. 1 is the present invention The explosive view of the fire cover of one embodiment；Fig. 2 is the cross-sectional view of the fire cover of one embodiment of the invention.Fire cover 2 includes 10 He of lower cover Upper cover body 20, under the use state of fire cover 2, upper cover body 20 is covered on lower cover 10.Upper cover body 20 and lower cover 10 are equal In lower spill.The bottom of lower cover 10 is formed with the recessed portion 15 for accommodating combustion gas, and lower cover 10 is equipped with multiple connection recessed portions 15 fire output hole 150, more specifically, lower cover 10, which is along the circumferential direction distributed with one, irises out fire hole 150.Upper cover body 20 and lower cover Multiple radial air gas flow paths 100 are formed between body 10.Moreover, upper cover body 20 is covered on lower cover 10 and shape The appearance air cavity 200 of air is accommodated at one, air gas flow path 100 is in communication with the outside air cavity 200 is held.

Specifically, lower cover 10 include circumferentially around the first lateral wall 11, upper cover body 20 include circumferentially around Two lateral walls 21.Multiple fire output holes 150 are set on the first lateral wall 11 and along the circumferentially distributed of the first lateral wall 11.Air The air inlet 100a and appearance air cavity 200 of airflow channel 100 are communicated, and the gas outlet 100b of air gas flow path 100 is located at outside first On side wall 11, and it is located at the top of fire output hole 150.Soup, overflow pollution or blocking fire output hole and air draught in order to prevent Channel, as shown in Fig. 2, the outer diameter of upper cover body 20 is greater than the outer diameter of lower cover 10.

In order to allow the flame of fire cover 2 to be circumferentially uniformly distributed, multiple fire output holes 150 are circumferentially equidistant along the first lateral wall 11 Distribution.And in order to allow air uniformly to supplement, the outlet of the corresponding air gas flow path 100 of every two adjacent fire output hole 150 Mouth 100b, and the gas outlet 100b corresponding with its of every two adjacent fire output hole 150 is distributed in isosceles triangle.In addition, each fire out Minimum range between the gas outlet 100b of the corresponding air gas flow path in hole 150 is 2mm.One fire output hole and the left side are adjacent The corresponding air gas flow path of fire output hole gas outlet, it is empty that the fire output hole and the right adjacent fire output hole correspond to another The gas outlet of gas airflow channel.Minimum range between the fire output hole and the gas outlet of the two air gas flow paths is 2mm. The angle of the center line of the outlet port of the center line of each fire output hole 150 air gas flow path corresponding with its is 20 °.

Incorporated by reference to Fig. 1 and Fig. 2, lower cover 10 further includes roof 12 and the recess 13 towards upper cover body 20.Lower cover 20 is also The convex wall 23 matched including upper bottom wall 22 and recess 13.Roof 12 is connected with the first lateral wall 11,12 phase of recess 13 and roof Even.Under the use state of fire cover 2, roof 12 and upper bottom wall 22 are in contact, and recess 13 and convex wall 23 are in contact.Shape on roof 12 At there is multiple first grooves 110, multiple first grooves 110 are along the circumferentially equidistant distribution of lower cover 10, and the first groove 110 is under Lid 10 radially extends.Multiple second grooves 120, diameter of multiple second grooves 120 along lower cover 10 are formed on recess 13 To extension.In the present embodiment, each air gas flow path 100 includes being formed in the first groove 110 of roof 12 and being formed in recessed The second groove 120 on wall 13.First groove 110 is connected to the second groove 120.Moreover, second groove 120 of the present embodiment Length is 20mm, greater than the length of the first groove 110.

The upper cover body 20 and lower cover 10 of the present embodiment are in circular ring shape, include joining end to end at the inner ring of lower cover 10 , the first composition portion 14 that radial section is L-shaped, include end to end, radial section at the inner ring of upper cover body 20 in inverted L-shaped The second composition portion 24, when upper cover body 20 is covered on lower cover 10, the first composition portion 14 and the second composition portion 24 composition hold gas Chamber 200, sets that there are four enter the entrance 201 for holding air cavity 200 for air in the first composition portion 14.Air enters from entrance 201 and holds After air cavity 200, it is transported near each fire output hole 150 using multiple air gas flow paths 100.

The above is only a kind of embodiment is enumerated, by modifying and changing, more embodiments can also be derived.On such as Lid is rounded and lower cover is in circular ring shape, so that this fire cover is applied to the burner that one kind does not include interior ring fire cover.Again For example, the gas outlet 100b of multiple air gas flow paths 100 is formed in the second lateral wall.

And in another embodiment, under the use state of fire cover 2, recess 13 and the upper cover body of lower cover Gap is formed between convex wall 23, which constitutes a part for accommodating the appearance air cavity of air.And in this embodiment, air draught Channel 100 only includes the first groove being formed on the roof 12 of lower cover.

The present invention also provides a kind of burners of gas-cooker, and referring to figure 3. to Fig. 5, wherein Fig. 3 is one embodiment of the invention Burner explosive view；Fig. 4 is the perspective view of the burner of one embodiment of the invention；Fig. 5 is the combustion of one embodiment of the invention The cross-sectional view of burner.The burner 1 of gas-cooker successively includes burner base 3, intermediate member 4 and fire cover from the bottom to top.Fire cover In burner base 3, intermediate member 4 is between burner base 3 and fire cover.Wherein, fire cover includes external ring fire cover again With interior ring fire cover 5.The external ring fire cover of the present embodiment uses fire cover 2 described in previous embodiment, so, in subsequent descriptions " external ring fire cover " corresponds to label 2.External ring fire cover 2 includes lower cover 10 and upper cover body 20, under the use state of external ring fire cover 2, Upper cover body 20 is covered on lower cover 10.The bottom of lower cover 10 be formed with accommodate combustion gas recessed portion 15, recessed portion 15 with Burner base 3 matches and is formed the chamber 31 of a receiving combustion gas.A circle and chamber is along the circumferential direction distributed in lower cover 10 The fire output hole 150 that room 31 is connected.Burner base 3 includes outer ring ejector pipe 33 and inner ring ejector pipe 34, and air is from ejector pipe Opening be inhaled into ejector pipe, it is logical by the combustion gas in burner base 3 to enter the combustion gas in outer ring ejector pipe 33 and air Road 35 enters chamber 31, flows out finally by fire output hole 150 and is ignited to form outer ring flame.In order to guarantee that combustion gas is sufficiently fired It burns, the dependency structure that the present invention passes through burner supplements air required when fuel gas buring.Firstly, the outside of burner base 3 Face be equipped with multiple air supply imports 36, and the medial surface of burner base 3 be equipped with it is multiple respectively with air supply import 36 Corresponding air supply outlet 37.So, in burning, air enters burner 1 from air supply import 36, and from sky Gas supply outlet 37 reaches the interior zone of burner 1.

But the air of these supplements is not met by demand, and the present embodiment has also carried out following improvement.Please refer to Fig. 6 extremely Fig. 8, wherein Fig. 6 is the perspective view of the burner base of one embodiment of the invention；Fig. 7 is the middle part of one embodiment of the invention The perspective view of part；Fig. 8 is perspective view of the intermediate member shown in Fig. 7 under another angle.

Burner base 3 is equipped with air intake 301.Intermediate member 4 includes hollow connecting cavity 40, the entrance of connecting cavity 401 alignment air intakes 301 are burning as shown in figure 5, intermediate member 4 is equipped with the flange 41 of the entrance 401 around connecting cavity Under the use state of device, flange 41 is inserted into air intake 301.In the present embodiment, air intake 301 connects air and generates dress It sets, such as air blower (not shown).The entrance 401 of connecting cavity 40 is set to the bottom surface of intermediate member 4, and the top surface of intermediate member 4 is set There are four the first connecting cavity outlet 402 and multiple second connecting cavities outlet 403, four the first connecting cavity outlets 402 are respectively aligned to The entrance 201 of four appearance air cavitys 200 holds air cavity 200 to enter from the air that connecting cavity 40 flows out.Hold in air cavity 200 Air air gas flow path 100 between upper cover body 20 and lower cover 10 is respectively delivered near each fire output hole 150.From And sufficient air supplement can be obtained in the combustion gas that the fire output hole 150 on external ring fire cover 2 comes out.

Please comparative diagram 3 to Fig. 5 referring to Fig. 9 and Figure 10, wherein Fig. 9 is the solid of the interior ring fire cover of one embodiment of the invention Figure；Figure 10 is the cross-sectional view of the interior ring fire cover of one embodiment of the invention.The burner 1 of the present embodiment further includes interior ring fire cover 5, interior Ring fire cover 5 includes lid portion 51 and circular wall body portion 52, and the integrally formed mode in lid portion 51 and wall body portion 52 is formed.Wall body Portion 52 limits the recessed portion 50 of a receiving combustion gas, and wall body portion 52 is equipped with the fire output hole 501 of multiple connection recessed portions 50.It is recessed Concave portion 50 and burner base 3 cooperatively form the chamber 32 of a receiving combustion gas.Combustion gas and drawing from inner ring sets the sky of the entrance of pipe 34 After gas reaches chamber 32, is flowed out from fire output hole 501 and be ignited to form interior ring flame.

For the air that the fuel gas buring supplement come out to each fire output hole 501 on interior ring fire cover 5 is sufficient.Wall body portion 52 Inside it is embedded with multiple linearly extended air ducts 500.The outlet 500b of air duct 500 is located at the top of fire output hole 501.Wall The notch section 520 for not running through wall body portion 52 is formed in body portion 52, the import 500a of air duct 500 is located at the bottom in wall body portion 52 The outlet 500b in face 521, air duct 500 is located at notch section 520.

Specifically, the notch section 520 of the present embodiment is formed in the top in wall body portion 52.Moreover, notch section 520 be by The top in wall body portion 52 carries out chamfer machining and forms, and the angle of chamfering is acute angle.To which being process notch section 520 includes one A inclined-plane 5201, fire output hole 501 are located at inclined-plane 5201, and the outlet 500b of air duct 500 is located at inclined-plane 5201 and is going out fire The top in hole 501.From fig. 10 it can be seen that in this way, the outlet 500b of fire output hole 501 and air duct 500 is located at lid portion 51 Upright projection within the scope of.It can prevent soup, overflow pollution, blocking fire output hole and air duct.

Also, in order to be uniformly delivered to air near each fire output hole 501, every two adjacent fire output hole 501 is right The outlet 500b an of air duct 500 is answered, and the outlet 500b corresponding with its of every two adjacent fire output hole 501 is in isosceles triangle Distribution.Moreover, the minimum range between the outlet 500b of the corresponding air duct of each fire output hole 501 is 3mm, and each The angle of the center line of the outlet end of the center line of fire output hole 501 air duct corresponding with its is 30 °.As shown in Figure 10, it covers Body portion 51 includes hd top face 510, and the center line of fire output hole 501 is tilted relative to hd top face 510 to be extended, and air duct 500 The center line and hd top face 510 of outlet end are vertical.

As shown in fig. 7, multiple second connecting cavities export 403 rounded distributions, multiple first connecting cavity outlets 402 are disposed around The outside of multiple second connecting cavity outlets 403.The import of each second connecting cavity outlet, 403 one air duct 500 of alignment 500a.To which air reaches the air duct 500 on interior ring fire cover 5 from connecting cavity 40, and then is delivered to each interior ring fire cover 5 On fire output hole 501 near.

As shown in Figure 4, it is seen then that the burner 1 of the present embodiment gas-cooker in appearance with the difference of existing burner not It is very big, but it is compared to existing burner, and more sufficient air can be but supplemented in burner combustion.Work as air intake It is only communicated with atmosphere just when can provide enough air supplies, air intake can be not required to connection air generating device.For example, at this It invents in another embodiment, air intake 301 is the opening communicated with atmosphere.

Finally, the gas-cooker includes the burner 1 of previous embodiment the present invention also provides a kind of gas-cooker.

The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention. It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and It is changed and retouched made by range, belongs to scope of patent protection of the invention.

Claims (20)

1. the bottom of a kind of fire cover (2) of burner for gas-cooker, including lower cover (10), the lower cover (10) is formed There is the recessed portion (15) for accommodating combustion gas, the lower cover (10) is equipped with the fire output hole of multiple connection recessed portions (15) (150), which is characterized in that

It further include the upper cover body (20) being covered on the lower cover (10), the upper cover body (20) and the lower cover (10) Between be formed with air gas flow path (100).

2. the fire cover (2) for the burner of gas-cooker as described in claim 1, which is characterized in that the upper cover body (20) It is covered on the lower cover (10) and forms the appearance air cavity (200) for accommodating air, the air gas flow path (100) will be described Hold air cavity (200) to be in communication with the outside.

3. the fire cover (2) for the burner of gas-cooker as described in claim 1, which is characterized in that the air draught is logical The gas outlet (100b) in road (100) is located at the top of the fire output hole (150).

4. the fire cover (2) for the burner of gas-cooker as described in claim 1, which is characterized in that every two adjacent institute State the gas outlet (100b) of fire output hole (150) corresponding air gas flow path (100), and it is every two adjacent it is described go out Fire hole (150) and its corresponding described gas outlet (100b) are distributed in isosceles triangle.

5. the fire cover (2) for the burner of gas-cooker as claimed in claim 4, which is characterized in that each fire output hole (150) minimum range between the gas outlet (100b) of the corresponding air gas flow path (100) is 0.5mm~3mm, And/or in the outlet port of center line air gas flow path (100) corresponding with its of each fire output hole (150) The angle of heart line is 0 °~45 °.

6. the fire cover (2) for the burner of gas-cooker as described in claim 1, which is characterized in that the upper cover body (20) It is greater than the outer diameter of the lower cover (10) in the outer diameter of lower spill and/or the upper cover body (20) with the lower cover (10).

7. the fire cover (2) for the burner of gas-cooker as described in claim 1, which is characterized in that the lower cover (10) Including the first lateral wall (11), the upper cover body (20) includes the second lateral wall (21), and multiple fire output holes (150) are located at institute It states the first lateral wall (11), multiple air gas flow paths is formed between the upper cover body (20) and the lower cover (10) (100), the gas outlet (100b) of multiple air gas flow paths (100) is formed in first lateral wall (11) or described Two lateral walls (21).

8. the fire cover (2) for the burner of gas-cooker as claimed in claim 7, which is characterized in that the lower cover (10) With roof (12), the upper cover body (20) has the upper bottom wall (22) matched with the roof (12), in the fire cover (2) Use state under, the roof (12) is in contact with the upper bottom wall (22), the air gas flow path (100) include formed In roof (12) or the first groove (110) of the upper bottom wall (22).

9. the fire cover (2) for the burner of gas-cooker as claimed in claim 8, which is characterized in that the lower cover (10) With the recess (13) towards the upper cover body (20), the upper cover body (20) has the convex wall matched with the recess (13) (23), under the use state of the fire cover (2), the recess (13) is in contact with the convex wall (23), the air draught Channel (100) further includes the second groove (120) for being formed in the recess (13) or the convex wall (23), second groove (120) it is connected to first groove (110).

10. the fire cover (2) for the burner of gas-cooker as claimed in claim 9, which is characterized in that second groove (120) length is greater than the length of first groove (110), and the length of second groove (120) is 20mm~30mm.

11. the fire cover (2) for the burner of gas-cooker as claimed in claim 8, which is characterized in that the lower cover (10) With the recess (13) towards the upper cover body (20), the upper cover body (20) has the convex wall matched with the recess (13) (23), under the use state of the fire cover (2), gap is formed between the recess (13) and the convex wall (23), between described Gap constitutes a part for accommodating the appearance air cavity (200) of air.

12. the fire cover (2) for the burner of gas-cooker as claimed in claim 2, which is characterized in that the upper cover body (20) It is in circular ring shape with the lower cover (10), includes that end to end, radial section is L-shaped at the inner ring of the lower cover (10) First composition portion (14) includes second composition of the end to end, radial section in inverted L-shaped at the inner ring of the upper cover body (20) Portion (24), when the upper cover body (20) is covered on the lower cover (10), first composition portion (14) with described second group The appearance air cavity (200) is formed at portion (24), first composition portion (14) is equipped at least one and enters the appearance for air The entrance (201) of air cavity (200).

13. such as the fire cover (2) of the burner (1) of any of claims 1-10 for gas-cooker, which is characterized in that Multiple radial air gas flow paths (100) are formed between the upper cover body (20) and the lower cover (10).

14. a kind of burner of gas-cooker (1), which is characterized in that including as in any one of the preceding claims for firing The fire cover (2) of the burner (1) of gas kitchen.

15. the burner (1) of gas-cooker as claimed in claim 14, which is characterized in that including burner base (3) and centre Component (4), the fire cover (2) are located in the burner base (3), and the intermediate member (4) is located at the burner base (3) between the fire cover (2), the recessed portion (15) matches with the burner base (3) and forms a receiving combustion The chamber (31) of gas, the burner base (3) are equipped with air intake (301), and the intermediate member (4) includes hollow company It connects chamber (40), the entrance (401) of the connecting cavity (40) is directed at the air intake (301)；The intermediate member (4) has the One connecting cavity exports (402), and the air of the first connecting cavity outlet (402) outflow is directly or indirectly to the air draught Channel (100).

16. the burner (1) of gas-cooker as claimed in claim 15, which is characterized in that the air intake (301) be with it is big The logical opening of gas phase.

17. the burner (1) of gas-cooker as claimed in claim 15, which is characterized in that the upper cover body (20) is covered on institute It states on lower cover (10) and forms the appearance air cavity (200) for accommodating air, the air gas flow path (100) is by the appearance air cavity (200) it is in communication with the outside, the first connecting cavity outlet (402) alignment entrance (201) for holding air cavity (200).

18. the burner (1) of gas-cooker as claimed in claim 15, which is characterized in that the fire cover (2) is external ring fire cover, The burner (1) further includes interior ring fire cover (5), and the interior ring fire cover (5) includes lid portion (51) and circular wall body portion (52), the wall body portion (52) limits the recessed portion (50) of a receiving combustion gas, and the interior ring fire cover (5) is equipped with multiple companies Lead to the fire output hole (501) of the recessed portion (50), the wall body portion (52) is equipped with air duct (500)；The intermediate member (4) also there is the second connecting cavity outlet (403), the first connecting cavity outlet (402) is disposed around the second connecting cavity outlet (403) outside, the second connecting cavity outlet (403) are directed at the import (500a) of the air duct (500).

19. the burner (1) of gas-cooker as claimed in claim 18, which is characterized in that the wall body portion (52) is equipped with more A air duct (500), the import (500a) of the air duct (500) are located at the bottom surface (521) of the wall body portion (52), institute It states and is formed on wall body portion (52) notch section (520), the outlet (500b) of the air duct (500) is located at the notch section (520)。

20. a kind of gas-cooker, which is characterized in that the burner including the gas-cooker as described in any one of claim 14-19 (1)。