CN209459017U - A kind of stove heat shield and application have the gas-cooker of the heat shield - Google Patents

Abstract

The utility model relates to a kind of stove heat shields, it include annular cover, the center of cover is formed with annular chamber, the cover is double-deck and has cavity, it is characterized by: the cover offers the venthole for being connected to the annular chamber and the cavity on the inner sidewall for forming annular chamber circumferentially spacedly, the cover then offers the air inlet that the cavity is flowed into for outside air on outer side wall or bottom wall, the utility model also provides the gas-cooker that a kind of application has above-mentioned stove heat shield, the gas stove energy can independently internally using the separator being arranged on heat shield, the supplement of outer ring progress auxiliary air, effectively avoid inner ring auxiliary air superfluous, and the unreasonable distribution phenomenon of the insufficient auxiliary air of outer ring auxiliary air, auxiliary air is subjected to pressure shunting by the separator, make inner and outer ring energy full combustion, it is especially suitable The external ring fire cover with two ring fires is closed, on the one hand the setting of the separator is avoided that the auxiliary air between inner ring and outer ring influences each other.

Description

A kind of stove heat shield and application have the gas-cooker of the heat shield

Technical field

The utility model relates to gas-cooker fields, and in particular to a kind of stove heat shield and application have the stove heat shield Gas-cooker.

Background technique

Currently available technology, a kind of blasting type household combustion gas burner for gas stove, including blower and burner, but only limit to In carrying out limited supplement to the primary air in combustion process, auxiliary air cannot be effectively fed, Means of Secondary Air Supplement is complete It is adjusted by combustor external, this adjustment is influenced by the structure of entire gas-cooker, is easy to appear insufficient, the cigarette that burns The problems such as CO is exceeded in gas, and the thermal efficiency is low.For this purpose, as (Authorization Notice No. is a Patent No. ZL201120141967.3 202109479U) it discloses a kind of blasting type household combustion gas burner for gas stove, including controller, blower and burner, combustions Burner includes furnace seat, distributor, air distributor, gas distributor, conduit, injection mixing tube and nozzle, has combustion in distributor Make a fire hole and auxiliary air through-hole, and by connecing in two air pipelines of fan outlet, one is connect in burner nozzle installation place, supply To primary air, another is connect on burner top, feeds auxiliary air, thus directly controls primary sky during fuel gas buring The distribution of gas coefficient and auxiliary air guarantees that combustion gas mixes with air uniformity.But the auxiliary air of the burner for gas stove be compared with It is uniformly distributed in distributor, is only applicable to the burner of fully premixed burning, but its thermic load is small, it is difficult to meet China and cook It prepares food requirement, and the primary air ratio of existing atmospheric gas stove combustor is generally 0.4-0.7, the air of premix has been not achieved Complete required air capacity of burning, in addition various factors, needs certain auxiliary air to supplement, also, in order to reduce the row of CO It puts, auxiliary air supplement should as far as possible sufficiently.Currently, the mode of burner for gas stove supplement air is varied, generally have The mode of side air inlet and lower air inlet, the mode of side air inlet open side air admission mouth in the side of mixing chamber, and outside air is by being somebody's turn to do Side air admission mouth carries out auxiliary air supplement, and the mode of lower air inlet opens lower air inlet in pedestal pedestal, the sky below gas-cooker Gas carries out auxiliary air supplement by the lower air inlet.Wherein, although the mode of side air inlet has intake resistance small, air inflow is big The advantages of, still, the burner of existing side air inlet still exist it is problematic such as: it is inside and outside due to the ejector action of combustion heat air-flow Fire cover can be rolled up by mixing chamber side air admission mouth inhales auxiliary air, and inner ring thermic load is small, and primary air ratio is high compared with outer ring, because The auxiliary air that this volume is inhaled is often superfluous, and the auxiliary air of the middle ring fire hole of external ring fire cover volume inhales deficiency, in order to rationally divide It with auxiliary air, while realizing the full combustion of inner and outer rings, also needs to be improved further.

On the other hand, existing gas-cooker in actual use, is taken to set on pan bracket and be heated due to cookware, pot There is certain space interval between burner, the thermal energy that such fuel gas buring generates is other than being used to heating kettle, and there are also phases When a part escapes in ambient enviroment, energy waste is caused；It is to solve the above-mentioned problems, domestic in recent years that there have been some collection Hot polymerization energy gathers " for the cumulative circle of gas-cooker and with its gas-cooker " as disclosed in Chinese patent CN203404823U Can enclose is to surround the power saving features that burner periphery is arranged in, for the gas-cooker that application has cumulative circle, due to by poly- The blocking that can be enclosed, thus can further be affected to the lateral auxiliary air that burner provides, in addition, using there is cumulative circle Gas-cooker, it is side air admission that auxiliary air, which supplements channel, although when the auxiliary air for flowing through cumulative circle supplements channel two Secondary air can be preheated, but cause the pre-heat effect of auxiliary air bad due to preheating face is small.

Utility model content

A technical problem to be solved in the utility model be for above-mentioned state of the art and provide it is a kind of can be to Burner provides the stove heat shield of preheated lateral auxiliary air.

Second technical problem to be solved in the utility model is to provide a kind of ensure to provide to burner lateral two Secondary smooth air and enough stove heat shields.

Third technical problem to be solved in the utility model is to provide one kind for above-mentioned state of the art and answer With the gas-cooker for having above-mentioned stove heat shield.

4th technical problem to be solved in the utility model is to provide a kind of energy for above-mentioned state of the art Enable the gas-cooker for the auxiliary air reasonable distribution entered the wind through stove heat shield side.

Technical solution adopted by the utility model to solve the above technical problems is as follows: the stove heat shield, includes annular Cover, the center of the cover is formed with annular chamber, and the cover is double-deck and has cavity, it is characterised in that: the cover Body offers the outlet for being connected to the annular chamber and the cavity circumferentially spacedly on the inner sidewall for forming the annular chamber Hole, the cover then offer the air inlet that the cavity is flowed into for outside air on outer side wall or bottom wall.

In order to which the lateral auxiliary air that can ensure that stove heat shield is provided to burner is smooth and enough, the air inlet with External gas supply part connection.Preferably the gas supply part can be air blower.

In order to the benefit for going out flame range domain and being performed in accordance with auxiliary air of interior ring fire cover and external ring fire cover to burner It fills, the inner sidewall of the cover has step in annular, and the venthole includes that two rows spaced first go out Stomata and the second venthole, wherein upper the first venthole arranged is located at the first wall surface on the step, the second of the lower row Venthole is located at the second wall surface under the step.Wherein the first venthole more pointedly to external ring fire cover go out flame range domain into The supplement of row auxiliary air, the second venthole more pointedly internal ring fire cover go out flame range domain carry out auxiliary air supplement.

In order to which the stove can preferably contain discharge with heat shield, the upper surface of the step radially from from inside to outside gradually to Lower inclination forms and contains liquid zone domain.

Inside and outside fire cover can be rolled up by the lateral secondary air compensating channel of heat shield in order to prevent inhales auxiliary air, the Sheng At least one separator is provided in liquid zone domain, it is relatively independent that the Sheng liquid zone domain can be separated at least two by the separator Space.The space that separator is divided into can pointedly be the lateral secondary air compensating channel tonifying Qi of burner, and separator separates The first venthole preferably can be performed in accordance with the supplement of auxiliary air for the fire output hole of external ring fire cover.

From the simple angle of mounting structure, it is preferable that the separator includes vertical spaced two pieces of sides Plate has the gap for being connected to the annular chamber and the cover cavity between two blocks of side plates.

In order to have directional stream-guidance effect to auxiliary air, reduces the supply resistance of the external ring flame of auxiliary air, make Secondary air supply obtains rapider, and first wall surface is protruding upward in the top end surface of two pieces of side sheet rooms, the top End face tilts gradually downward from inside to outside to the upper surface of the cover bottom.

In order to carry out the supplement of auxiliary air to the inside and outside external ring fire cover for all having fire output hole, the top end surface is in neighbour The third venthole with the cavity configured in fluid communication is equipped on the wall surface of the nearly annular chamber circumferentially spacedly.Third outlet Hole is more pointedly to flame range domain supplements out in external ring fire cover.

It is effectively preheated in order to enable the gas outlet of cover to flow out auxiliary air, in the cavity of the cover also Equipped with vertical annular baffle, the lower surface of the lower ora terminalis of the partition and the cover bottom has gap, and the partition will The cavity is separated into the outlet chamber positioned inside and the preheating cavity positioned at outside, and the secondary sky of preheating is accommodated in the preheating cavity The preheating channel of gas, the air intake of the preheating channel are directly connected with the air inlet, and the preheating channel is neighbouring The gap offers the gas outlet with the air inlet configured in fluid communication.And in order to increase contact of the preheating channel with preheating cavity Area, preheating channel helically plate-like.

In order to buffer the auxiliary air flowed out from preheating cavity, under the cover bottom of the bottom of the outlet chamber Surface is more protruded, and the venthole is then arranged in correspondence in the outlet chamber.

In order to which the drip pan that heat shield can be smoothly shelved on gas kitchen range panel is better achieved, the cover bottom Lower surface is provided with feet, plane locating for bottom of the plane locating for the bottom of the feet lower than the outlet chamber.

In order to facilitate support cookware, a pot stabilizer blade is fixed on the covering on top periphery.

The utility model is to solve second technical problem and provide the gas-cooker that a kind of application has above-mentioned stove heat shield, Including gas kitchen range panel and burner, the burner includes:

Pedestal；

Interior ring fire cover is arranged on pedestal, and central mixing chamber is formed between pedestal；

External ring fire cover is also disposed on pedestal, positioned at the periphery of interior ring fire cover, and is formed outer ring between pedestal and is mixed Gas chamber；Tonifying Qi chamber is formed between the center mixing chamber and outer ring mixing chamber；It is equipped with also circumferentially spacedly on the pedestal more A radial secondary air compensating channel for being used to be connected to the tonifying Qi chamber and the external world；

It is characterized by: the annular chamber of the heat shield surrounds the burner and is shelved on gas kitchen range panel, it is described The separator that cover contains liquid zone domain is aligned setting with the secondary air compensating channel one by one.

For the external ring fire cover particularity with two ring fires, the external ring fire cover includes cricoid ontology and covers thereon Main cover plate, the ontology include the Central District being arranged concentrically and outer zone；

Connection outer ring mixing chamber is offered on the Central District and is circumferentially spaced molding main fire hole；Institute It states the same edge on outer zone along the ontology and is equipped at intervals with multiple convex boss in body surface, the interval between adjacent lands The notch for being connected to the Central District is formed, the notch is equally aligned setting, edge on each boss one by one with the separator Kindling circumferencial direction compartment of terrain forms radial main slot, and second venthole is connected in described through the secondary air compensating channel The outer wall area of mixing chamber is entreated, the third venthole is connected to the main fire hole of the Central District through the notch, and described first goes out Stomata is connected to the main fiery slot of the outer zone.Since the Central District of external ring fire cover needs a large amount of auxiliary air, position can be passed through Pass through the notch between adjacent lands to Central District in the first venthole in the vertical side plate of separator two and third venthole Outside supplements auxiliary air, and the burning to ensure middle ring is abundant；Pass through the first venthole being located at outside the vertical side plate of separator two The supplement of auxiliary air is carried out to the outer zone of external ring fire cover, and passes through the second venthole in the vertical side plate of separator two Auxiliary air is supplemented by the outer wall area of the central mixing chamber of the inside ring fire cover in secondary air compensating channel.

In order to facilitate positioning main cover plate, the Central District of the ontology has internal ring portion and outer portion two parts, the inner ring The top in portion is higher by the top of the outer portion, and the main fire hole axially penetrates through the top surface of the internal ring portion, and the main cover plate is then It offsets in the outer portion and on the outside of inside edge and the internal ring portion, the outer ledge and the boss of the main cover plate Main fiery slot cooperation be respectively formed side fire hole.

In order to which the side fire hole of external ring fire cover is not easy from flame, circumferentially compartment of terrain forms radial direction on each boss Steady flame slot, the steady flame slot and the main fiery slot interval be arranged, the outer ledge of the main cover plate and the steady flame of the boss Slot cooperation is respectively formed stable flame hole, and the outer ledge of the main cover plate be downwardly extending block in the side fire hole and Rain visor above stable flame hole.

In order to preferably supply to external ring fire cover, the level connected between the Central District and outer zone in the ontology connects At least two through-holes passed through for combustion gas are offered in socket part.

Further, the pedestal is equipped with the center blast tube for being connected to the central mixing chamber, the connection outer ring The outer ring blast tube of mixing chamber, the center blast tube are connected to center ejector pipe, the outer ring blast tube and outer ring Ejector pipe connection.

It can effectively be preheated in order to which the air provided from gas supply part enters heat shield, the auxiliary air after preheating can be split A part enters center ejector pipe and outer ring ejector pipe to provide preheated rear primary air for burner, to imitate raising combustion gas out Utilization rate, for this purpose, the utility model provide a preferred improvement project, the gas supply part be located at the center ejector pipe and outside Except ring ejector pipe, the preheating channel is also provided with the first diffluence pass being spaced apart with air inlet, offers on the cover The second diffluence pass corresponding with first diffluence pass, second diffluence pass by pipeline and the center ejector pipe and/or The air intake end of outer ring ejector pipe is connected.

Compared with prior art, it is offered the utility model has the advantage of heat shield and flows into heat shield sky for outside air The air inlet of chamber enables outside air to enter heat shield and is effectively preheated, and the auxiliary air after preheating can be shunted by venthole Preheated rear auxiliary air is provided for burner out, combustion gas utilization rate is improved with effect, and the utility model also provides a kind of utilization The gas-cooker of above-mentioned heat shield, the gas stove energy can independently carry out inner and outer rings using the separator being arranged on heat shield The supplement of auxiliary air effectively avoids inner ring auxiliary air superfluous, and unreasonable point of the insufficient auxiliary air of outer ring auxiliary air With phenomenon, auxiliary air is carried out by pressure shunting by the separator, makes inner and outer ring energy full combustion, is especially suitable for having two On the one hand the setting of the external ring fire cover of ring fire, the separator is avoided that the auxiliary air between inner ring and outer ring influences each other, separately On the one hand filling into for auxiliary air effectively can also be effectively performed for the ring fire close to inner ring of two ring fire of external ring fire cover, With accurate positioning, fuel gas buring efficiency is improved, the heat of mixing chamber can be recycled with partition, further preheats two Secondary air helps to improve the burner thermal efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment medium mess heat shield；

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

Fig. 3 is that heat shield is placed in the schematic diagram on gas-cooker in the utility model embodiment；

Fig. 4 is the cross-sectional view of Fig. 3；

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

Fig. 6 is the decomposition texture schematic diagram of Fig. 5；

Fig. 7 is the structural schematic diagram of external ring fire cover ontology in the utility model embodiment.

Specific embodiment

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

It is the preferred forms of the utility model as shown in Fig. 1~7, the stove heat shield in the present embodiment is non-existing Heat shield in technology can connect with external gas supply part 8 such as air blower so that from the air that gas supply part 8 provides into every Heat cover can be preheated effectively, and the auxiliary air after preheating can be distributed by venthole provides preheated rear secondary sky for burner Gas improves combustion gas utilization rate with effect.It specifically include the cover 1 of annular, the center of cover 1 is formed with annular chamber 10, cover 1 is double-deck and has cavity 11, and cover 1 offers connected ring on the inner sidewall 101 for forming annular chamber 10 circumferentially spacedly The venthole of shape chamber 10 and cavity 11, cover 1 then offer the air inlet that cavity 11 is flowed into for outside air on outer side wall 102 (not shown), naturally it is also possible to be arranged on bottom wall 103.In order to the interior ring fire cover 6 and external ring fire cover 7 to burner The flame range domain that goes out be performed in accordance with the supplement of auxiliary air, the inner sidewall of cover 1 has step 14 in annular, and venthole includes Spaced first venthole 121 of two rows and the second venthole 131 are somebody's turn to do wherein upper the first venthole 121 arranged is located at The first wall surface 12 on step 14, the second venthole 131 of lower row are located at the second wall surface 13 under the step, wherein the One venthole 121 is more pointedly to the supplement for going out flame range domain and carrying out auxiliary air of external ring fire cover 7, and the second venthole 131 is more The pointedly supplement for going out flame range domain and carrying out auxiliary air of internal ring fire cover 6.And in order to which the stove can be contained preferably with heat shield Discharge is filled, the upper surface of step 14 forms radially from tilting gradually downward from inside to outside and contains liquid zone domain 141.

Inside and outside fire cover can contain liquid zone by the lateral secondary air compensating channel of mixing chamber volume 51 suction auxiliary air in order to prevent Be provided with the separator 2 of at least one circumferentially spaced setting in domain 141, separator 2 can will contain liquid zone domain 141 be separated into Few two relatively independent spaces, wherein the space that separator 2 is divided into can pointedly pass through lateral secondary air compensating channel 51 Inside ring fire cover 6 goes out the tonifying Qi of flame range domain, and the first venthole 121 that separator 2 separates preferably can go out fire for external ring fire cover 7 Region is performed in accordance with the supplement of auxiliary air, from the point of view of simple installation, it is preferable that between separator 2 includes vertical There is the gap 17 of connection annular chamber 10 and 1 cavity 11 of cover between two blocks of side plates of setting, two blocks of side plates.And in order to make The space that separator 2 is divided into can have directional stream-guidance effect to auxiliary air, reduce the supply of the external ring flame of auxiliary air Resistance obtains secondary air supply rapider, and the first wall surface 12 is protruding upward in the top end surface 123 of two pieces of side sheet rooms, top End face 123 tilts gradually downward from inside to outside to the upper surface 15 of 1 bottom of cover.The emphasis of the utility model also resides in existing skill Burner in art has inner ring fire cover 6 and external ring fire cover 7, and external ring fire cover 7 is general only to have a ring fire, and is directed to outer ring fire For lid 7 has the case where two ring fires, the supplement in 7 liang of ring fires of external ring fire cover close to the auxiliary air of a ring fire of inner ring is then shown It is particularly critical, for this purpose, the top end surface 123 of the first wall surface of this heat shield 12 on the wall surface of adjacent rings chamber 10 circumferentially between It is equipped with the third venthole 1231 with 11 configured in fluid communication of cavity every ground, which can be for two ring fire outer rings The supplement of pointedly auxiliary air is carried out in the special construction of fire cover 7 close to a ring fire of inner ring.In addition, in order to make Auxiliary air is flowed out in the gas outlet 31 of cover 1 effectively to be preheated, and be additionally provided with vertical annular baffle in the cavity 11 of cover 1 110, the lower ora terminalis of partition 110 and the lower surface 16 of 1 bottom of cover have gap 17, and cavity 11 is separated by partition 110 to be located at The outlet chamber 111 of inside and preheating cavity 112 positioned at outside accommodate the preheating channel of preheating auxiliary air in preheating cavity 112 3, the air intake of preheating channel 3 is directly connected with air inlet, and 3 adjacent gap 17 of preheating channel offers and air inlet phase The gas outlet 31 of fluid communication increases the contact area of preheating channel 3 Yu preheating cavity 112, preheating channel 3 in the present embodiment Helically plate-like, and in order to buffer the auxiliary air flowed out from preheating cavity 112, the bottom of outlet chamber 111 is compared with 1 bottom of cover Lower surface 16 more protrude, venthole is then arranged in correspondence in outlet chamber 111, while in order to which heat shield energy is better achieved It is smoothly shelved on the drip pan 20 of gas kitchen range panel 4, the lower surface 16 of 1 bottom of cover is provided with feet 161, feet 161 Bottom locating for plane be slightly below plane locating for the bottom of outlet chamber 111, and support cookware for convenience, 1 top of cover Pot stabilizer blade 18 is fixed on periphery.

As shown in figure 3, be placed in the schematic diagram on gas-cooker for the heat shield, the gas-cooker include gas kitchen range panel 4 with And burner, wherein burner include pedestal 5, the interior ring fire cover 6 that is arranged on pedestal 5, the interior ring fire cover 6 and pedestal 5 Between form central mixing chamber 61, the external ring fire cover 7 being equally also disposed on pedestal 5, which is located at interior ring fire The periphery of lid 6, and outer ring mixing chamber 71 is formed between pedestal 5, it is formed between central mixing chamber 61 and outer ring mixing chamber 71 Tonifying Qi chamber 70；Multiple radial secondary air compensatings for being used to be connected to tonifying Qi chamber 70 and the external world are equipped on pedestal 5 also circumferentially spacedly Channel 51；The annular chamber 10 of heat shield surrounds burner and is shelved on gas kitchen range panel 4, and cover 1 contains the separation in liquid zone domain 141 The space that the vertical side plate of the two of part 2 is divided into is aligned setting, the sky that such separator 2 is divided into secondary air compensating channel 51 one by one Between can pointedly by the inside ring fire cover 6 in lateral secondary air compensating channel 51 go out the tonifying Qi of flame range domain, separator 2 separate first Venthole 121 can be preferably the supplement for going out flame range domain and being performed in accordance with auxiliary air of external ring fire cover 7.Specifically, this implementation The external ring fire cover 7 of example is also correspondingly relatively special, and external ring fire cover 7 includes the main cover plate 73 of cricoid ontology 72 and covering thereon, Ontology 72 includes the Central District 721 being arranged concentrically and outer zone 722；Connection outer ring mixing chamber 71, simultaneously is offered on Central District 721 Circumferentially it is spaced molding main fire hole 7211；Same edge on outer zone 722 along the ontology 72 is equipped at intervals with multiple The convex boss 7221 in 72 surface of ontology, the interval between adjacent lands 7221 form the notch 7222 of connection Central District 721, Notch 7222 is equally aligned setting one by one with separator 2, on each boss 7221 circumferentially compartment of terrain form it is radial Main fire slot 7223, the second venthole 131 are connected to the outer wall area of central mixing chamber 61, third venthole through secondary air compensating channel 51 1231 are connected to the main fire hole 7211 of Central District 721 through notch 7222, and the first venthole 121 is connected to the main fiery slot of outer zone 722 7223.The Central District 721 of ontology 72 has 7213 two parts of internal ring portion 7212 and outer portion, and the top of internal ring portion 7212 is higher by The top of outer portion 7213, main fire hole 7211 axially penetrate through the top surface of internal ring portion 7212, and main cover plate 73 is then located at the outer portion It offsets on the outside of on 7213 and inside edge 731 and internal ring portion 7212, the outer ledge 732 of main cover plate 73 and the master of boss 7221 The fiery cooperation of slot 7223 is respectively formed side fire hole, in order to preferably go out fire, circumferentially compartment of terrain molding on each boss 7221 Have a radial steady flame slot 7224, steady flame slot 7224 is arranged with the main fiery interval of slot 7223, the outer ledge 732 of main cover plate 73 with it is convex Steady flame slot 7224 cooperation of platform 7221 is respectively formed stable flame hole, this main fiery slot 7223 is formed with the respective gap 17 of steady flame slot 7224 Outlet size determine the size of side fire and steady fireworks, outlet size, while main fiery slot can be determined according to design requirement 7223 can be different from the groove depth of steady flame slot 7224, itself can form the gap 17 of preferably supplement auxiliary air, and main The outer ledge 732 of cover board 73 is downwardly extending the rain visor blocked above side fire hole and stable flame hole, because combustion gas is passed through Burning is finally flowed out in the shock of rain visor, and air velocity is low, also functions to steady flame effect well.

It, can be vertical by being located at 2 liang of separator since the Central District 721 of external ring fire cover 7 needs a large amount of auxiliary air The first venthole 121 in side plate and third venthole 1231 pass through the notch 7222 between adjacent lands 7221 to Central District 721 outside supplements auxiliary air, and the burning to ensure middle ring is abundant；Pass through first outside 2 liang of separator vertical side plates Venthole 121 carries out the supplement of auxiliary air to the outer zone 722 of external ring fire cover 7, and by being located at 2 liang of vertical sides of separator The second venthole 131 in plate is supplemented by the outer wall area of the central mixing chamber 61 of the inside ring fire cover 6 in secondary air compensating channel 51 Auxiliary air.The level between Central District 721 and outer zone 722 is connected in order to preferably supply to external ring fire cover 7, in ontology 72 At least two through-holes 7231 passed through for combustion gas are offered on interconnecting piece 723.Pedestal 5, which is equipped with, to be connected in central mixing chamber 61 Heart blast tube 52, the outer ring blast tube 53 for being connected to outer ring mixing chamber 71, center blast tube 52 and center ejector pipe 521 connect Logical, outer ring blast tube 53 is connected to outer ring ejector pipe 531.Finally, in order to which the air provided from gas supply part 8 enters heat shield energy Effectively preheated, the auxiliary air after preheating can be split out a part enter center ejector pipe 521 and outer ring ejector pipe 531 with For burner provide it is preheated after primary air, combustion gas utilization rate is improved with effect, further includes having positioned at center ejector pipe 521 and outer Gas supply part 8 except ring ejector pipe 531, gas supply part 8 are connected with air inlet, and preheating channel 3 is also provided with and air inlet interval The the first diffluence pass (not shown) opened offers the second diffluence pass corresponding with the first diffluence pass on cover 1 and (does not show in figure Show), the second diffluence pass is by first pipe 81 and center ejector pipe 521 and passes through second pipe 82 and outer ring ejector pipe 531 Air intake end be connected.

Detailed process is as follows, when such as air blower works positioned at the gas supply part 8 of 4 lower section of gas kitchen range panel, is introduced into setting and exists After preheating channel 3 in heat shield preheating cavity 112, the auxiliary air after the preheating of heat shield preheating channel 3 can be divided into two-way The air intake end of center ejector pipe 521 and outer ring ejector pipe 531 is respectively enterd, it is preheated rear primary empty to be provided for burner Gas enters main fire hole 7211, the side of external ring fire cover 7 from outer ring blast tube 53 after primary air and combustion gas after premix are the allocated Fire hole and stable flame hole outflow, another way combustion gas are formed in cavity from the external annulus that central blast tube enters interior ring fire cover 6, And in turn from the inner ring fire hole outflow on interior ring fire cover 6, and the air that enters preheating channel 3 it is preheated after from outlet chamber 111 Venthole outflow, wherein the annular chamber 10 of heat shield surrounds burner and is shelved on gas kitchen range panel 4, and utilizes Sheng liquid zone The separator 2 in domain 141 is aligned setting with the secondary air compensating channel 51 of burner one by one, is located at 2 liang of vertical side plates of separator in this way The first interior venthole 121 and third venthole 1231 pass through the notch 7222 between adjacent lands 7221 to Central District 721 Outside supplements auxiliary air, and the burning to ensure middle ring is abundant；Pass through the first venthole being located at outside 2 liang of separator vertical side plates 121 carry out the supplement of auxiliary air to the outer zone 722 of external ring fire cover 7, and the by being located in 2 liang of separator vertical side plates Two ventholes 131 supplement auxiliary air by the outer wall area of the central mixing chamber 61 of the inside ring fire cover 6 in secondary air compensating channel 51, Independent air supply passage can effectively avoid auxiliary air of the high temperature of thermal current and burner after burning to supply to inner ring Involving velocity is generated, the auxiliary air between inner ring and outer ring is avoided to influence each other.

Claims (19)

1. a kind of stove heat shield includes the cover (1) of annular, the center of the cover (1) is formed with annular chamber (10), institute Cover (1) is stated as bilayer and there are cavity (11), it is characterised in that: the cover (1) is forming the interior of the annular chamber (10) The venthole for being connected to the annular chamber (10) and the cavity (11), the cover are offered on side wall (101) circumferentially spacedly Body (1) then offers the air inlet that the cavity (11) is flowed into for outside air on outer side wall (102) or bottom wall (103).

2. stove heat shield according to claim 1, it is characterised in that: the air inlet and external gas supply part (8) are even It connects.

3. stove heat shield according to claim 2, it is characterised in that: the inner sidewall of the cover (1) has in annular Step (14), the venthole include spaced first venthole (121) of two rows and the second venthole (131), wherein upper the first venthole (121) arranged is located at the first wall surface (12) on the step (14), the second of lower row goes out Stomata (131) is located at the second wall surface (13) under the step.

4. stove heat shield according to claim 3, it is characterised in that: the upper surface of the step (14) is radially from interior It tilts gradually downward outward, is formed and contain liquid zone domain (141).

5. stove heat shield according to claim 4, it is characterised in that: be provided at least in the Sheng liquid zone domain (141) The Sheng liquid zone domain (141) can be separated at least two relatively independent spaces by one separator (2), the separator (2).

6. stove heat shield according to claim 5, it is characterised in that: the separator (2) includes that vertical interval is set The two blocks of side plates set have between two blocks of side plates and are connected between the annular chamber (10) and the cover (1) cavity (11) Gap (17).

7. stove heat shield according to claim 6, it is characterised in that: first wall surface (12) is in two blocks of side plates Between top end surface (123) it is protruding upward, the upper surface (15) of top end surface (123) Xiang Suoshu cover (1) bottom is in It tilts gradually downward outward.

8. stove heat shield according to claim 7, it is characterised in that: the top end surface (123) is in the neighbouring ring The third venthole (1231) with the cavity (11) configured in fluid communication is equipped on the wall surface of shape chamber (10) circumferentially spacedly.

9. stove heat shield according to claim 8, it is characterised in that: be additionally provided in the cavity (11) of the cover (1) Vertical cricoid partition (110), the lower ora terminalis of the partition (110) and the lower surface (16) of the cover (1) bottom have The cavity (11) is separated into positioned at the outlet chamber (111) of inside and positioned at the pre- of outside by gap (17), the partition (110) Hot chamber (112), the interior preheating channel (3) for accommodating preheating auxiliary air of the preheating cavity (112), the preheating channel (3) Air intake is directly connected with the air inlet, and the preheating channel (3) neighbouring the gap (17) offer with it is described The gas outlet (31) of air inlet configured in fluid communication.

10. stove heat shield according to claim 9, it is characterised in that: the bottom cover of the outlet chamber (111) The lower surface (16) of body (1) bottom is more protruded, and the venthole is then arranged in correspondence in the outlet chamber (111).

11. stove heat shield according to claim 10, it is characterised in that: the lower surface (16) of cover (1) bottom It is provided with feet (161), locating for bottom of the plane locating for the bottom of the feet (161) lower than the outlet chamber (111) Plane.

12. stove heat shield according to claim 1 or 2, it is characterised in that: fixed in cover (1) top perimeter There are a pot stabilizer blade (18).

13. a kind of application has the gas-cooker of the above-mentioned stove heat shield as described in claim 9~11 any one claim, Including gas kitchen range panel (4) and burner, the burner includes:

Pedestal (5)；

Interior ring fire cover (6) is arranged on pedestal (5), and central mixing chamber (61) is formed between pedestal (5)；

External ring fire cover (7) is also disposed on pedestal (5), is located at the periphery of interior ring fire cover (6), and the shape between pedestal (5) At outer ring mixing chamber (71)；Tonifying Qi chamber (70) are formed between the center mixing chamber (61) and outer ring mixing chamber (71)；The base Multiple radial secondary air compensating channels for being used to be connected to the tonifying Qi chamber (70) and the external world are equipped on seat (5) also circumferentially spacedly (51)；

It is characterized by: the annular chamber (10) of the heat shield surrounds the burner and is shelved on gas kitchen range panel (4), institute The separator (2) for stating cover (1) Sheng liquid zone domain (141) is aligned setting with the secondary air compensating channel (51) one by one.

14. gas-cooker according to claim 13, it is characterised in that: the external ring fire cover (7) includes cricoid ontology (72) and covering main cover plate (73) thereon, the ontology (72) includes the Central District (721) being arranged concentrically and outer zone (722)；

Connection outer ring mixing chamber (71) is offered on the Central District (721) and is circumferentially spaced molding main fire hole (7211)；Same edge on the outer zone (722) along the ontology (72) is equipped at intervals with multiple convex in ontology (72) surface Boss (7221), the interval between adjacent lands (7221) forms the notch (7222) for being connected to the Central District (721), described Notch (7222) is equally aligned setting one by one with the separator (2), is circumferentially spaced on each boss (7221) Ground forms radial main fiery slot (7223), and second venthole (131) is through described in the secondary air compensating channel (51) connection The outer wall area of central mixing chamber (61), the third venthole (1231) are connected to the Central District through the notch (7222) (721) main fire hole (7211), first venthole (121) are connected to the main fiery slot (7223) of the outer zone (722).

15. gas-cooker according to claim 14, it is characterised in that: the Central District (721) of the ontology (72) has interior The top of ring portion (7212) and outer portion (7213) two parts, the internal ring portion (7212) is higher by the top of the outer portion (7213) End, the main fire hole (7211) axially penetrate through the top surface of the internal ring portion (7212), and the main cover plate (73) is then located at the outer ring It offsets in portion (7213) and on the outside of inside edge (731) and the internal ring portion (7212), the outer side edges of the main cover plate (73) The main fiery slot (7223) of edge (732) and the boss (7221), which cooperates, is respectively formed side fire hole.

16. gas-cooker according to claim 15, it is characterised in that: on each boss (7221) circumferentially between Radial steady flame slot (7224) is formed every ground, the steady flame slot (7224) and the main fiery slot (7223) are spaced and are arranged, described The outer ledge (732) of main cover plate (73) and steady flame slot (7224) cooperation of the boss (7221) are respectively formed stable flame hole, and And the outer ledge (732) of the main cover plate (73) is downwardly extending to block and prevent above the side fire hole and stable flame hole Water eaves.

17. gas-cooker according to claim 15, it is characterised in that: the connection Central District in the ontology (72) (721) at least two through-holes passed through for combustion gas are offered in the horizontal connection portion (723) between outer zone (722) (7231)。

18. gas-cooker according to claim 13, it is characterised in that: it is mixed that the pedestal (5) is equipped with the connection center The center blast tube (52) of gas chamber (61), the outer ring blast tube (53) for being connected to the outer ring mixing chamber (71), the center Blast tube (52) is connected to center ejector pipe (521), and the outer ring blast tube (53) is connected to outer ring ejector pipe (531).

19. gas-cooker according to claim 18, it is characterised in that: the gas supply part (8) is located at the center ejector pipe (521) and except outer ring ejector pipe (531), the preheating channel (3) is also provided with the first diffluence pass being spaced apart with air inlet, Offer the second diffluence pass corresponding with first diffluence pass on the cover (1), second diffluence pass by pipeline with The air intake end of the center ejector pipe (521) and/or outer ring ejector pipe (531) is connected.