CN115681968A - Gas kitchen ranges - Google Patents

Abstract

The application relates to the technical field of gas cookers and discloses a gas stove. The gas stove comprises: the inner fire cover is provided with an inner fire hole; the outer fire covers are positioned on the outer sides of the inner fire covers and are sequentially arranged along the circumferential direction of the inner fire covers, and the outer fire covers are provided with outer fire holes; and the secondary air supplementing structure is communicated with the inner fire hole and/or the outer fire hole and is correspondingly used for providing secondary air for the inner fire hole and/or the outer fire hole. Divide into a plurality of outer fire lids with current outer fire lid, and a plurality of outer fire lids set up along the circumference interval in proper order of interior fire lid, have the clearance between a plurality of outer fire lids promptly, thereby disperse into single little flame with the big flame of outer fire hole department, reduce the phenomenon of striving for secondary air between the outer fire hole that is located different outer fire lids, and set up secondary air and supply the structure, supply secondary air for interior fire hole and/or outer fire hole, improve the combustion effect of air-fuel mixture in interior fire hole and/or the outer fire hole, thereby improve the thermal efficiency of gas-cooker.

Description

Gas kitchen ranges

Technical Field

The application relates to the technical field of gas cookers, in particular to a gas stove.

Background

The heat exchange modes of the existing gas stove and cooker mainly comprise three types of heat radiation, heat convection and heat conduction, wherein the heat convection accounts for the highest ratio. The air-fuel (air and gas) mixed gas flowing out of the inner fire hole and/or the outer fire hole is ignited to form gas in a combustion state; the temperature of the air-fuel mixed gas in the partial combustion state is higher, the heat exchange with the bottom of the pot (the bottom of the pot) is heat convection, and a small part of heat radiation exists at the same time; the gas generates high-temperature flue gas after being combusted, the high-temperature flue gas continuously carries out heat convection heat exchange with the pot bottom, and meanwhile, the temperature is gradually reduced in the heat exchange process until the high-temperature flue gas leaves the pot bottom. The main form of heat exchange between the gas burning of the gas stove and the boiler bottom is described above.

The existing main mode for improving the heat efficiency of the gas stove is realized by adding an energy-gathering cover which has a single-layer or multi-layer structure. The basic principle of the energy-gathering cover is that the efficiency is improved by two main modes of reducing ineffective heat loss and reducing the flow velocity of smoke, namely improving the heat exchange time of the smoke and the bottom of the pot. Wherein the ineffective heat loss comprises: the heat radiation loss of the flame downward (in the direction of the liquid containing plate and the glass panel), the heat exchange loss of the flame, namely the air-fuel mixed gas and the surrounding secondary air, the heat exchange loss of the high-temperature flue gas and the secondary air and the like, and the heat absorbed by the pot is improved by reducing the ineffective heat loss and improving the contact/heat exchange time of the flue gas and the pot bottom.

Under the condition that the maximum heat load of the gas stove is certain, under the same factors such as the diameter of a cooker, the distance between the cooker and a flame and the like, the heat exchange coefficient of high-temperature flue gas and the bottom of the cooker is basically unchanged, meanwhile, in order to ensure the CO index required by national standard, the high-temperature flue gas cannot stay between the bottom of the cooker and an energy-collecting cover all the time, a smoke exhaust gap (the height of a supporting claw of the energy-collecting cover) must be adjusted to ensure the flue gas index, the smaller the smoke exhaust gap is, the longer the theoretical stay time of the flue gas is, but the CO exceeds the standard. Therefore, under the condition that parameters such as certain heat load (certain total amount of gas in the inner fire hole and the outer fire hole), certain heat convection heat transfer coefficient, heat transfer area (area of the bottom of the cooker) and the like cannot be improved, the heat absorbed by the cooker basically reaches a limit value, and the heat efficiency of the gas stove cannot be further improved.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a gas stove, which aims to solve the problem that the heat efficiency of the existing gas stove cannot be further improved.

According to an embodiment of the present invention, there is provided a gas range including: the inner fire cover is provided with an inner fire hole; the outer fire covers are positioned on the outer sides of the inner fire covers and are sequentially arranged along the circumferential direction of the inner fire covers, and the outer fire covers are provided with outer fire holes; and the secondary air supplement structure is communicated with the inner fire hole and/or the outer fire hole and is correspondingly used for providing secondary air for the inner fire hole and/or the outer fire hole.

Optionally, the number of the secondary air supplement structures is equal to the sum of the number of the inner fire covers and the number of the outer fire covers, and the secondary air supplement structures correspond to the inner fire covers and the outer fire covers one to one.

Optionally, the secondary air supplement structure comprises: and the outer secondary air supplement structure and the inner secondary air supplement structure are respectively positioned on the outer side of the inner fire cover and one side of the inner fire hole facing the middle part of the inner fire cover, or respectively positioned on the outer side of the outer fire cover and one side of the outer fire hole facing the middle part of the outer fire cover.

Optionally, the outside secondary air supplement structure includes: an energy-gathering cover defining a secondary air channel; the first radiation layer is positioned on the outer side of the inner fire cover and is suitable for being positioned on one side of the inner fire cover facing the cooker, a first flow guide channel is defined by the first radiation layer and the inner fire cover, and the first flow guide channel is communicated with the secondary air channel and the inner fire hole; the second radiation layer cover is established the outer fire lid outside is suitable for to be located outer fire lid is towards one side of pan, and with outer fire lid prescribes a limit to the second water conservancy diversion passageway, second water conservancy diversion passageway intercommunication secondary air passageway with outer fire hole.

Optionally, the first radiation layer is provided with a first mounting hole, the first mounting hole is sleeved outside the inner fire cover, and a first flow guide channel is defined between the hole wall of the first mounting hole and the outer wall surface of the inner fire cover; and/or, the second radiation layer is provided with second mounting holes, the number of the second mounting holes is equal to that of the outer fire covers, the second mounting holes correspond to the outer fire covers one by one, any one of the second mounting holes is sleeved on the outer sides of the outer fire covers correspondingly, and the second flow guide channel is defined between the hole wall of each second mounting hole and the outer wall surface of the corresponding outer fire cover.

Optionally, the hole walls of the first mounting hole opposite to the adjacent second mounting hole are provided with first fire transmission grooves; and/or at least two adjacent hole walls of the second mounting holes are provided with second fire transmission grooves.

Optionally, the inside secondary air supplement structure comprises: the furnace chamber is provided with a first furnace chamber through hole, the middle part of the inner fire cover is provided with an inner fire cover through hole, and the first furnace chamber through hole is communicated with the inner fire cover through hole and the outside; and/or, the furnace chamber is provided with a second furnace chamber through hole, the middle part of the outer fire cover is provided with an outer fire cover through hole, and the second furnace chamber through hole is communicated with the outer fire cover through hole and the outside.

Optionally, the gas range further comprises: and a third furnace chamber through hole communicated with the outside is formed in the furnace chamber corresponding to the part between the inner fire cover and the outer fire cover.

Optionally, when the number of turns of the inner fire holes ranges from 1 to 5 turns and is larger than 1, a plurality of turns of the inner fire holes are sequentially sleeved along the direction from inside to outside; and/or the number of turns of the outer fire holes ranges from 1 to 5 turns, and when the number of turns of the outer fire holes is larger than 1, a plurality of turns of the outer fire holes are sequentially sleeved along the direction from inside to outside.

Optionally, when the number range of the inner fire holes is greater than 1, at least two adjacent circles of the inner fire holes on the same inner fire cover are arranged in a staggered manner; and/or when the range of the number of turns of the outer fire holes is larger than 1, the outer fire holes are arranged in a staggered manner in at least two adjacent turns on the same outer fire cover.

The gas stove provided by the embodiment of the disclosure can realize the following technical effects:

divide into a plurality of outer fire lids with current outer fire lid, and a plurality of outer fire lids set up along the circumference interval in proper order of interior fire lid, have the clearance between a plurality of outer fire lids promptly, thereby disperse into single little flame with the big flame of outer fire hole department, reduce the phenomenon of striving for secondary air between the outer fire hole that is located different outer fire lids, and set up secondary air and supply the structure, supply secondary air for interior fire hole and/or outer fire hole, improve the combustion effect of air-fuel mixture in interior fire hole and/or the outer fire hole, thereby improve the thermal efficiency of gas-cooker.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:

fig. 1 is a schematic structural view of a gas range provided in an embodiment of the present disclosure;

FIG. 2 is an enlarged view of the portion A of FIG. 1;

fig. 3 is a schematic structural diagram of a first radiation layer and a second radiation layer provided by an embodiment of the disclosure;

fig. 4 is a schematic structural view of another gas range provided by the embodiment of the present disclosure;

FIG. 5 is a schematic view of a gas burner with a partial structure according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a furnace chamber provided in an embodiment of the present disclosure;

fig. 7 is a schematic structural view of another gas range provided by the embodiment of the present disclosure;

FIG. 8 is a schematic sectional view taken along line H-H in FIG. 7;

fig. 9 is an enlarged structural view of the portion M in fig. 8, in which solid-line arrows indicate the flow direction of secondary air in the inner secondary air supplement structure, and dotted-line arrows indicate the flow direction of secondary air in the outer secondary air supplement structure.

Reference numerals are as follows:

1. an inner fire cover; 11. an inner fire hole; 12. the inner fire cover is provided with a through hole; 2. an outer fire cover; 21. an outer fire hole; 22. an outer fire cover through hole; 31. a furnace chamber; 311. a first furnace cavity through hole; 312. a second furnace chamber through hole; 313. a third furnace chamber through hole; 314. a gas flow channel of the inner furnace cavity; 315. an outer furnace cavity fuel gas runner; 316. a convex column; 317. connecting columns; 318. connecting ribs; 319. a side wall; 32. a gas distribution disc; 321. a first gas distribution plate through hole; 33. an energy-gathering cover; 331. an upper cover; 332. a lower cover; 333. a base plate; 334. a secondary air passage; 34. a first radiation layer; 341. a first radiation plate; 342. a first radiating section; 344. a first flow guide passage; 345. a first mounting hole; 346. a first fire transfer trough; 35. a second radiation layer; 351. a second radiation plate; 352. a second radiating section; 354. a second flow guide channel; 355. a second mounting hole; 356. a second fire transfer groove; 4. an ignition needle; 5. and a thermocouple.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1 to 9, the present disclosure provides a gas range including an inner fire cover 1, an outer fire cover 2, and a secondary air supplement structure.

As shown in fig. 1 and 2, the inner fire cover 1 is provided with an inner fire hole 11; outer fire lid 2 is equipped with outer fire hole 21, the quantity of outer fire lid 2 is a plurality of, and the outside of fire lid 1 is located in a plurality of outer fire lid 2, and set gradually along the circumference of interior fire lid 1, in other words, the clearance has between the adjacent outer fire lid 2, thereby divide into a plurality of outer fire lid 2 with one outer fire lid 2 in the correlation technique, divide into the little flame of a plurality of outer fire lid 2 with the big flame of one outer fire lid 2, slow down the phenomenon of competing for the air between the outer fire hole 21 on the same outer fire lid 2, improve the combustion effect of outer fire hole 21 department air-fuel mixture.

The secondary air supplement structure is communicated with the inner fire holes 11 and/or the outer fire holes 21 and is correspondingly used for supplementing secondary air to the inner fire holes 11 and/or the outer fire holes 21.

The secondary air supplement structure can be communicated with the inner fire hole 11 to supplement secondary air for the inner fire hole 11, so that the combustion effect of air-fuel mixed gas at the inner fire hole 11 is improved; and/or the secondary air supplementing structure can be communicated with the outer fire holes 21 to supplement secondary air for the outer fire holes 21, so that the combustion effect of the air-fuel mixed gas at the outer fire holes 21 is improved.

Optionally, the number of the inner fire covers 1 may be one or multiple, and when the number of the inner fire covers 1 is multiple, the multiple inner fire covers 1 are located in the middle of the ring shape enclosed by the multiple outer fire covers 2.

As shown in fig. 1, the number of the inner fire covers 1 is one, and the number of the outer fire covers 2 is six.

Optionally, the number of the secondary air supplement structures is equal to the sum of the number of the inner fire covers 1 and the number of the outer fire covers 2, and the secondary air supplement structures correspond to one another.

In this embodiment, each of the inner fire caps 1 and each of the outer fire caps 2 correspond to a secondary air supplement structure, so that each of the inner fire caps 1 and the outer fire caps 2 can supplement secondary air through the corresponding secondary air supplement structure, air-fuel mixture in each of the inner fire caps 1 and the outer fire caps 2 can be sufficiently combusted, and the thermal efficiency of the gas stove is further improved.

Optionally, the secondary air makeup structure includes an outboard secondary air makeup structure and an inboard secondary air makeup structure.

The outer secondary air supplement structure and the inner secondary air supplement structure are respectively positioned on the outer side of the inner fire cover 1 and one side of the inner fire hole 11 facing to the middle part of the inner fire cover 1, or are respectively positioned on the outer side of the outer fire cover 2 and one side of the outer fire hole 21 facing to the middle part of the outer fire cover 2.

When the secondary air supplement structure is used for supplementing secondary air to the inner fire hole 11 (inner fire cover), the outer secondary air supplement structure is positioned at one side of the inner fire hole 11 departing from the middle part of the inner fire cover 1 and positioned at the outer side of the inner fire cover 1, the inner secondary air supplement structure is positioned at one side of the inner fire hole 11 facing to the middle part of the inner fire cover 1, namely the outer secondary air supplement structure and the inner secondary air supplement structure are respectively positioned at two opposite sides of the inner fire hole 11, so that the outer secondary air supplement structure is the inner fire hole 11 at the outer side (under the condition that a plurality of circles of inner fire holes 11 are sequentially sleeved along the direction from inside to outside, wherein the direction close to the middle part of the inner fire cover 1 is inside, the direction of keeping away from interior fire lid 1 middle part is outside) or the lateral part of interior fire hole 11 (under the condition that has interior fire hole 11 of round) provides secondary air, inboard secondary air supplyes the structure for inboard interior fire hole 11 (have the multiturn along the condition of interior fire hole 11 that the direction from inside to outside overlaps in proper order establishes, wherein, the direction that is close to interior fire lid 1 middle part is inside, the direction of keeping away from interior fire lid 1 middle part is outside) or interior fire hole 11 (under the condition that has interior fire hole 11 of round) the medial part provides secondary air, and then supply secondary air for interior fire hole 11 each department, improve the combustion effect of interior fire hole 11 each department air-fuel mist.

When the secondary air supplement structure is used for supplementing secondary air to the outer fire holes 21 (outer fire cover), the outer secondary air supplement structure is located at one side of the outer fire holes 21 away from the middle of the outer fire cover 2 and located at the outer side of the outer fire cover 2, and the inner secondary air supplement structure is located at one side of the outer fire holes 21 toward the middle of the outer fire cover 2, that is, the outer secondary air supplement structure and the inner secondary air supplement structure are respectively located at two opposite sides of the outer fire holes 21, so that the outer secondary air supplement structure provides secondary air to the outer fire holes 21 (in the case that there are a plurality of circles of outer fire holes 21 sequentially sleeved in the inward direction) at the outer side or the outer side portion of the outer fire holes 21 (in the case that there is one circle of outer fire holes 21), and the inner secondary air supplement structure provides secondary air to the outer fire holes 21 (in the case that there are a plurality of circles of outer fire holes 21 sequentially sleeved in the inward direction) or the inner side portion of the outer fire holes 21 (in the case that there is one circle of outer fire holes 21) at each position, thereby supplementing secondary air to the outer fire holes 21 and improving the combustion effect of the mixed gas at each of the outer fire holes 21.

As shown in fig. 1 and 3, when the outer secondary air supplementing structure is used to supplement the secondary air to the inner fire holes 11, the outer secondary air supplementing structure includes the energy concentrating cover 33 and the first radiation layer 34.

As shown in fig. 8, the fire cover comprises an inner fire cover 1 and an outer fire cover 2, the energy-gathering cover 33 is sleeved outside the whole fire cover, the energy-gathering cover 33 comprises an upper cover 331, a lower cover 332 and a bottom plate 333, the upper cover 331 is positioned below the lower cover 332 and defines a secondary air passage or a heat insulation cavity with the lower cover 332, and the bottom plate 333 is positioned below the lower cover 332 and defines a secondary air passage 334 with the lower cover 332.

As shown in fig. 1 and fig. 2, the first radiation layer 34 is sleeved on the outer side of the inner fire cover 1 and is suitable for being located on one side of the inner fire cover 1 facing the pot, and defines a first flow guide channel 344 with the outer wall surface of the inner fire cover 1, and the first flow guide channel 344 is communicated with the secondary air channel 334 and the inner fire hole 11.

The inlet end of the secondary air channel 334 is communicated with the outside, the outlet end of the secondary air channel 334 is communicated with the first flow guide channel 344, and outside air enters the secondary air channel 334, then enters the first flow guide channel 344, flows out to the inner fire hole 11 through the first flow guide channel 344, and replenishes secondary air for the inner fire hole 11.

The first radiation layer 34 is sleeved outside the inner fire cover 1 and is suitable for being located at one side (located above the inner fire cover 1) of the inner fire cover 1 facing the pot, and the first radiation layer 34 does not shield an outlet of the inner fire hole 11, for example, the orthographic projection of the first radiation layer 34 and the outlet of the inner fire hole 11 on the horizontal plane is not overlapped, so that high-temperature flue gas flowing out of the outlet of the inner fire hole 11 is shielded by the first radiation layer 34 and cannot carry out heat convection with the pot. The outlet of one of the inner fire holes 11 is shown as F in fig. 4.

The first radiation layer 34 is thermally conducted by the air-fuel mixture gas of the inner fire hole 11 or high-temperature flue gas generated by combustion of the fuel gas. Carry out heat-conducting high temperature flue gas with first radiation layer 34 and earlier with first radiation layer 34 heat transfer before with the pan heat transfer, consequently this part high temperature flue gas temperature is higher, heats first radiation layer 34 to high temperature state (burning red) easily, and the first radiation layer 34 of high temperature state sends spectrum forms such as infrared ray and carries out the heat radiation to the pan, and the high temperature flue gas that does not carry out the heat transfer with first radiation layer 34 heat transfer continues to carry out the heat transfer that is makeed hot convection with the pan. Thereby set up first radiation layer 34 after, carry out energy conversion with the high temperature flue gas, after energy transfer to first radiation layer 34 with the high temperature flue gas, first radiation layer 34 transmits the pan through thermal radiation's form, partly high temperature flue gas has both been utilized, simultaneously with the heat transfer in-process of pan, thermal radiation can exist simultaneously with the heat convection and do not influence each other, and then richened the heat transfer form of high temperature flue gas and pan, and thermal radiation's heat exchange efficiency is higher than the heat convection, make the heat of high temperature flue gas can more transmit to the pan, thereby the thermal efficiency of gas-cooker has been improved.

As shown in fig. 3, the first radiation layer 34 includes a first radiation plate 341 and a first radiation section 342 connected to the first radiation plate 341, the first radiation plate 341 is flat and is disposed along a horizontal direction, the first radiation section 342 is inclined toward a direction close to an outlet of the inner fire hole 11, so that the first radiation section 342 is inclined upward along an outside-in direction, wherein a direction close to a middle portion of the inner fire cover 1 is inside, and a direction away from the middle portion of the inner fire cover 1 is outside.

The top of the first radiant layer 34 is at a distance in the range of 2-15mm, for example 2mm, 5mm, 8mm, 11mm or 15mm, from the outlet of the inner fire hole 11. If the distance is less than 2mm, the distance between the top of the first radiant layer 34 and the outlet of the inner fire hole 11 is too small, the flow area of the part of the first flow guide channel 344 between the top of the first radiant layer 34 and the outlet of the inner fire hole 11 is too small, and secondary air supply is difficult; if the distance is more than 15mm, the flame at the outlet of the inner fire hole 11 can directly burn to the first radiation layer 34, and smoke is out of limits. Therefore, the distance between the top of the first radiation layer 34 and the outlet of the inner fire hole 11 is in the range of 2-15mm, so that the high-temperature smoke generated by the flame combustion received by the first radiation layer 34 is roasted until a red hot state is achieved, and at the moment, the first radiation layer 34 can emit infrared rays to perform radiation heat exchange on the bottom of a boiler, and the heat efficiency of the gas stove is improved.

The inner diameter of the first radiation section 342 is the same as the diameter of the circumference where the outlet of the inner fire hole 11 of the outermost ring is located, or the inner diameter of the first radiation section 342 is 1-1.3 times the diameter of the circumference where the outlet of the inner fire hole 11 of the outermost ring is located, so that the first radiation section 342 is prevented from blocking the outlet of the inner fire hole 11, and secondary air in the first flow guide channel can be guided to the outlet of the inner fire hole 11 (the root of the inner fire hole 11).

The first radiation layer 34 is provided with a first mounting hole 345, as shown in fig. 3, the first radiation section 342 defines the first mounting hole 345, the first mounting hole 345 is sleeved outside the inner fire cover 1, and a first flow guide channel 344 is defined between the hole wall of the first mounting hole 345 and the outer wall surface of the inner fire cover 1.

A first flow guide channel 344 is defined between the hole wall of the first mounting hole 345 and the outer wall surface of the inner fire cover 1, in other words, the first radiation section 342 is annular and is sleeved outside the inner fire cover 1, so that the first flow guide channel 344 is annular and supplies secondary air to each inner fire hole 11 in the circumferential direction of the inner fire cover 1.

When the outer secondary air supplement structure is used for supplementing secondary air to the outer fire hole 21, the second radiation layer 35 is sleeved outside the outer fire cover 2 and is suitable for being positioned on one side of the outer fire cover 2 facing the pot, and defines a second flow guide channel 354 with the outer fire cover 2, and the second flow guide channel 354 is communicated with the secondary air channel 334 and the outer fire hole 21.

The air inlet end of the secondary air channel 334 is communicated with the outside, the air outlet end of the secondary air channel 334 is communicated with the flow guide channel, and outside air enters the secondary air channel 334, then enters the flow guide channel, flows out of the outer fire hole 21 through the flow guide channel and replenishes secondary air for the outer fire hole 21.

The second radiation layer 35 is established in outer fire lid 2 outside and is suitable for and is located one side that outer fire lid 2 is towards the pan, and the second radiation layer 35 does not shelter from the export of outer fire hole 21, for example the orthographic projection of second radiation layer 35 and the export of outer fire hole 21 on the horizontal plane is misaligned for the export of outer fire hole 21 is flowed out high temperature flue gas and is sheltered from by second radiation layer 35 and can't carry out heat convection with the pan. The outlet of one of the outer fire holes 21 is shown as E in fig. 4.

The air-fuel mixture gas of the outer fire holes 21 or the high-temperature flue gas generated by combustion of the fuel gas conducts heat to the second radiation layer 35. Carry out heat-conducting high temperature flue gas with second radiation layer 35 earlier with second radiation layer 35 heat transfer before with the pan heat transfer, consequently this part high temperature flue gas temperature is higher, heats second radiation layer 35 to high temperature state (burning red) easily, and the second radiation layer 35 of high temperature state sends infrared ray isoplanatic form and carries out the heat radiation to the pan, does not continue with the high temperature flue gas of second radiation layer 35 heat transfer and the pan carries out the heat transfer that is giving first place to with hot convection. Thereby set up second radiation layer 35 after, carry out energy conversion with the high temperature flue gas, with the energy transfer of high temperature flue gas to second radiation layer 35 after, second radiation layer 35 transmits the pan through the form of heat radiation, partly high temperature flue gas has both been utilized, simultaneously with the heat transfer in-process of pan, heat radiation and heat convection can coexist and do not influence each other, and then the heat transfer form of high temperature flue gas and pan has been richened, and heat radiation's heat exchange efficiency is higher than heat convection, make the heat of high temperature flue gas can more transmit to the pan, thereby the thermal efficiency of gas-cooker has been improved.

The second radiation layer 35 includes a second radiation plate 351 and a second radiation section 352 connected to the second radiation plate 351, the second radiation plate 351 is flat and is disposed along a horizontal direction, and the second radiation section 352 is inclined toward a direction close to an outlet of the outer fire hole 21, so that the second radiation section 352 is inclined upward along an outside-in direction, wherein a direction close to the middle of the outer fire cover 2 is inward, and a direction away from the middle of the outer fire cover 2 is outward.

As shown in fig. 3, the first and second radiation plates 341 and 351 are of a unitary structure.

The top of the second radiant layer 35 is at a distance in the range of 2-15mm, for example 2mm, 5mm, 8mm, 11mm or 15mm, from the outlet of the outer fire aperture 21. If the distance is less than 2mm, the distance between the top of the second radiation layer 35 and the outlet of the outer fire hole 21 is too small, the flow area of the part of the second flow guide channel between the top of the second radiation layer 35 and the outlet of the outer fire hole 21 is too small, and secondary air is difficult to supply; if the distance is more than 15mm, the flame at the outlet of the outer fire hole 21 can directly burn to the second radiation layer 35, and smoke is out of limits. Therefore, the distance between the top of the second radiation layer 35 and the outlet of the outer fire hole 21 is in the range of 2-15mm, so that the second radiation layer 35 is baked by high-temperature flue gas generated by flame combustion until reaching a red hot state, and at this time, the second radiation layer 35 can emit infrared rays to perform radiation heat exchange on the bottom of a pot, thereby improving the thermal efficiency of the gas stove.

The inner diameter of the second radiation section 352 is the same as the diameter of the circumference where the outlet of the outer fire hole 21 of the outermost ring is located, or the inner diameter of the second radiation section 352 is 1-1.3 times the diameter of the circumference where the outlet of the outer fire hole 21 of the outermost ring is located, so that the second radiation section 352 is prevented from shielding the outlet of the outer fire hole 21, and secondary air in the flow guide channel can be guided to the outlet of the outer fire hole 21 (the root of the outer fire hole 21).

The second radiation layer 35 is provided with second mounting holes 355, as shown in fig. 3, the second radiation section 352 defines the second mounting holes 355, the number of the second mounting holes 355 is equal to the number of the outer fire covers 2 and corresponds to the number of the outer fire covers 2 one by one, any second mounting hole 355 is sleeved on the outer side of the corresponding outer fire cover 2, and a second flow guide channel 354 is defined between the hole wall of the second mounting hole 355 and the outer wall surface of the corresponding outer fire cover 2.

A second flow guide channel 354 is defined between the hole wall of the second mounting hole 355 and the outer wall surface of the outer fire cover 2, in other words, the second radiation section 352 is annular and is sleeved outside the outer fire cover 2, so that the second flow guide channel 354 is annular and supplies secondary air to each outer fire hole 21 in the circumferential direction of the outer fire cover 2.

The material of the first radiation layer 34 and the second radiation layer 35 may be common metal, ceramic, foamed metal, metal fiber, etc.

Optionally, as shown in fig. 3, the wall of each of the first mounting holes 345 opposite to the adjacent second mounting hole 355 is provided with a first fire transfer groove 346, and the first fire transfer grooves 346 realize fire transfer between the inner fire covers 1 and the adjacent outer fire covers 2; and/or, the adjacent hole walls of at least two adjacent second mounting holes 355 are provided with second fire transfer grooves 356, and the second fire transfer grooves 356 realize fire transfer between the adjacent outer fire covers 2.

Optionally, as shown in fig. 4 to 6, the inner secondary air supplementing structure includes a furnace chamber 31, the furnace chamber 31 is located below the fire cover, the inner secondary air supplementing channel further includes an air distribution plate 32, the air distribution plate 32 is located between the furnace chamber 31 and the fire cover, wherein the fire cover includes an inner fire cover 1 and an outer fire cover 2.

The furnace chamber 31 is provided with an inner furnace chamber gas flow passage 314, the inner furnace chamber gas flow passage 314 is communicated with the inner fire hole 11, and the gas flows into the inner fire hole 11 through the inner furnace chamber gas flow passage 314.

The furnace chamber 31 is provided with a first furnace chamber through hole 311, the inner furnace chamber gas flow channel 314 is sleeved outside the first furnace chamber through hole 311, and specifically, the furnace chamber 31 comprises a side wall 319, the side wall is wound outside the first furnace chamber through hole 311, and the inner furnace chamber gas flow channel 314 is defined between the side wall and the outer wall surface of the hole wall of the first furnace chamber through hole 311.

As shown in fig. 8, an inner fire cover through hole 12 is formed in the middle of the inner fire cover 1, the first furnace cavity through hole 311 communicates the inner fire cover through hole 12 with the outside, and the inner fire cover through hole 12 is located on one side of the inner fire hole 11 facing the middle of the inner fire cover 1.

The secondary air that gets into from the lower extreme of first furnace chamber through-hole 311 flows through first furnace chamber through-hole 311 and interior fire lid through-hole 12 in proper order to for inboard interior fire hole 11 (interior fire lid 1 is equipped with many circles and overlaps the condition of the interior fire hole 11 of establishing in proper order from inside to outside direction, wherein, the direction that is close to interior fire lid 1 middle part is interior, and the direction of keeping away from interior fire lid 1 middle part is outside) or interior fire hole 11 leans on interior part (the quantity of interior fire hole 11 is under the condition of round) to supply secondary air.

And/or the furnace chamber 31 is provided with a second furnace chamber through hole 312, the middle part of the outer fire cover 2 is provided with an outer fire cover through hole 22, the second furnace chamber through hole 312 is communicated with the outer fire cover through hole 22 and the outside, and the outer fire cover through hole 22 is positioned at the inner side of the outer fire hole 21.

As shown in fig. 6, the furnace chamber 31 is further provided with an outer furnace chamber gas flow passage 315, and the outer furnace chamber gas flow passage 315 is communicated with the outer fire hole 21. The outer furnace chamber gas flow channel 315 is provided with a convex column 316, and the second furnace chamber through hole 312 is provided in the convex column 316 and penetrates through the convex column 316. A connecting column 317 is further arranged in the outer oven cavity gas flow channel 315, the connecting column 317 is used for connecting the gas distribution disc 32 and the oven cavity 31, or the liquid containing disc and the oven cavity 31, and a connecting rib 318 is connected between the connecting column 317 and the convex column 316 to enhance the structural strength of the oven cavity 31, wherein the liquid containing disc is used for receiving soup overflowing from a pot during cooking.

The secondary air entering from the lower end of the second furnace chamber through hole 312 flows through the second furnace chamber through hole 312 and the outer fire cover through hole 22 in sequence, so as to supplement the secondary air for the inner outer fire hole 21 (the outer fire cover 2 is provided with a plurality of circles of outer fire holes 21 sleeved in sequence from the inside to the outside, wherein, the direction close to the middle part of the outer fire cover 2 is inside, and the direction far away from the middle part of the outer fire cover 2 is outside) or the inner part of the outer fire hole 21 (the number of the outer fire holes 21 is under the condition of one circle).

The gas distribution plate 32 is provided with a second gas distribution plate through hole communicating between the second furnace chamber through hole 312 and the outer fire cover through hole 22.

Optionally, the cavity 31 is provided with a third cavity through hole 313 corresponding to a portion between the outer fire lid 2 and the inner fire lid 1 and communicating with the outside.

The gas distribution plate 32 is provided with a first gas distribution plate through hole 321, and the first gas distribution plate through hole 321 is sleeved outside the inner fire cover 1. The lower end of the first air distribution plate through hole 321 is communicated with the third furnace chamber through hole 313, the lower end of the first air distribution plate through hole 321 is communicated with the part between the outer fire cover 2 and the inner fire cover 1, and secondary air entering from the lower end of the third furnace chamber through hole 313 sequentially flows through the first air distribution plate through hole 321, the part between the inner fire cover 1 and the outer fire cover 2 and supplements secondary air for one side (the inner side of the outer fire cover 2) of the outer fire cover 2 facing the inner fire cover 1 and one side (the outer side of the inner fire cover 1) of the inner fire cover 1 facing the outer fire cover 2.

Alternatively, the number of turns of the inner fire holes 11 ranges from 1 to 5 turns, and it is avoided that the number of turns of the inner fire holes 11 is more than 5, resulting in that it is difficult for the middle number of turns of the inner fire holes 11 to obtain the secondary air from the secondary air supplement structure.

When the number of turns scope of interior fire hole 11 was greater than 1, fire hole 11 was established along the direction cover from inside to outside in proper order in the many circles, and wherein, the direction that is close to interior fire lid 1 middle part is interior, and the direction of keeping away from interior fire lid 1 middle part is outer.

Thus, the inner secondary air supply structure 3 can supply secondary air to the inner fire holes 11 close to the inner side, and the outer secondary air supply structure can supply secondary air to the inner fire holes 11 close to the outer side.

Alternatively, the inner fire hole 11 is formed at the top of the inner fire cover 1 and extends in the up-down direction, and it is understood that the inner fire hole 11 may be formed at the side wall of the inner fire cover 1 and may be inclined.

When 11 circles of internal fire holes scope is greater than 1, be located in the setting of staggering of internal fire holes 11 of two at least adjacent circles on same internal fire lid 1, the supply of secondary air is not disturbed to internal fire holes 11 two adjacent circles like this.

As shown in fig. 4, the inner fire cover is provided with an ignition needle avoiding hole and a thermocouple avoiding hole for avoiding the ignition needle 4 and the thermocouple 5, respectively.

The number of turns of the outer fire holes 21 ranges from 1 to 5 turns, and the outer fire holes 21 are prevented from being larger than 5 turns, so that the outer fire holes 21 with the number of turns in the middle are difficult to obtain secondary air from a secondary air supplement structure.

And when the circle number scope in outer fire hole 21 was greater than 1, many circles outer fire hole 21 was established along the direction cover from inside to outside in proper order, and wherein, the direction that is close to outer fire lid 2 middle part is interior, and the direction of keeping away from outer fire lid 2 middle part is outside.

Thus, the inner secondary air supplement structure can supplement secondary air to the outer fire holes 21 close to the inner side, and the outer secondary air supplement structure can supplement secondary air to the outer fire holes 21 close to the outer side.

Alternatively, the outer fire holes 21 are formed at the top of the outer fire cover 2 and extend in the up-down direction, and it is understood that the outer fire holes 21 may be formed at the side wall of the outer fire cover 2 and be inclined.

When the circle number scope of outer fire hole 21 is greater than 1, be located the setting of staggering of two adjacent outer fire holes 21 on same outer fire lid 2 at least, two adjacent circles outer fire holes 21 do not mutually interfere with the supply of secondary air like this.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A gas range, comprising:

the inner fire cover is provided with an inner fire hole;

the outer fire covers are positioned on the outer sides of the inner fire covers and are sequentially arranged along the circumferential direction of the inner fire covers, and the outer fire covers are provided with outer fire holes;

and the secondary air supplement structure is communicated with the inner fire hole and/or the outer fire hole and is correspondingly used for supplementing secondary air to the inner fire hole and/or the outer fire hole.

2. Gas burner according to claim 1,

the number of the secondary air supplementing structures is equal to the sum of the number of the inner fire covers and the number of the outer fire covers, and the secondary air supplementing structures correspond to the inner fire covers and the outer fire covers one to one.

3. The gas range of claim 1, wherein the secondary air supplement structure comprises:

and the outer secondary air supplementing structure and the inner secondary air supplementing structure are respectively positioned on the outer side of the inner fire cover and one side of the middle part of the inner fire cover, or respectively positioned on the outer side of the outer fire cover and one side of the middle part of the outer fire cover, wherein the inner fire hole faces the inner fire cover.

4. The gas range of claim 3, wherein the outside secondary air supplement structure comprises:

an energy-gathering cover defining a secondary air channel;

the first radiation layer is positioned on the outer side of the inner fire cover, is suitable for being positioned on one side of the inner fire cover facing the pot and defines a first flow guide channel with the inner fire cover, and the first flow guide channel is communicated with the secondary air channel and the inner fire hole; the second radiation layer is sleeved on the outer fire cover and is suitable for being located on one side, facing the pot, of the outer fire cover, a second flow guide channel is limited by the outer fire cover and communicated with the secondary air channel and the outer fire hole.

5. Gas range according to claim 4,

the first radiation layer is provided with a first mounting hole, the first mounting hole is sleeved on the outer side of the inner fire cover, and a first flow guide channel is defined between the hole wall of the first mounting hole and the outer wall surface of the inner fire cover; and/or the presence of a gas in the gas,

the second radiation layer is provided with second mounting holes, the number of the second mounting holes is equal to that of the outer fire covers, the second mounting holes correspond to the outer fire covers one by one, the second mounting holes are sleeved on the outer sides of the outer fire covers correspondingly, and second flow guide channels are defined between the hole walls of the second mounting holes and the outer wall surfaces of the outer fire covers correspondingly.

6. Gas range according to claim 5,

the hole walls of the first mounting hole and the adjacent second mounting hole which are opposite to each other are provided with first fire transmission grooves; and/or the presence of a gas in the gas,

at least two adjacent hole walls of the second mounting holes are provided with second fire transmission grooves.

7. The gas range of claim 3, wherein the inside secondary air supplement structure comprises:

the furnace chamber is provided with a first furnace chamber through hole, the middle part of the inner fire cover is provided with an inner fire cover through hole, and the first furnace chamber through hole is communicated with the inner fire cover through hole and the outside; and/or the presence of a gas in the gas,

the furnace chamber is provided with a second furnace chamber through hole, the middle part of the outer fire cover is provided with an outer fire cover through hole, and the second furnace chamber through hole is communicated with the outer fire cover through hole and the outside.

8. The gas range of any one of claims 1 to 7, further comprising:

and a third furnace chamber through hole communicated with the outside is formed in the furnace chamber corresponding to the part between the inner fire cover and the outer fire cover.

9. Gas burner according to any of the claims 1 to 7,

the number of turns of the inner fire holes ranges from 1 to 5 turns, and when the number of turns of the inner fire holes is larger than 1, a plurality of turns of the inner fire holes are sequentially sleeved along the direction from inside to outside; and/or

The circle number range of the outer fire holes is 1-5 circles, and when the circle number range of the outer fire holes is larger than 1, the outer fire holes are sequentially sleeved with a plurality of circles from inside to outside.

10. Gas burner according to claim 9,

when the number range of the inner fire holes is more than 1, at least two adjacent circles of the inner fire holes on the same inner fire cover are arranged in a staggered manner; and/or when the circle number range of the outer fire holes is larger than 1, the outer fire holes are arranged on the same outer fire cover in a staggered mode, and at least two adjacent circles of the outer fire holes are arranged on the outer fire cover in a staggered mode.

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