WO2017088590A1 - 内环火盖及燃气灶 - Google Patents

内环火盖及燃气灶 Download PDF

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Publication number
WO2017088590A1
WO2017088590A1 PCT/CN2016/101187 CN2016101187W WO2017088590A1 WO 2017088590 A1 WO2017088590 A1 WO 2017088590A1 CN 2016101187 W CN2016101187 W CN 2016101187W WO 2017088590 A1 WO2017088590 A1 WO 2017088590A1
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WO
WIPO (PCT)
Prior art keywords
fire
surrounding wall
fire cover
holes
inner ring
Prior art date
Application number
PCT/CN2016/101187
Other languages
English (en)
French (fr)
Inventor
贾贵胜
张炳卫
余康
孙飞
Original Assignee
广东美的厨房电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201510894105.0A external-priority patent/CN105351934B/zh
Priority claimed from CN201510961777.9A external-priority patent/CN105423302B/zh
Application filed by 广东美的厨房电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的厨房电器制造有限公司
Publication of WO2017088590A1 publication Critical patent/WO2017088590A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means

Definitions

  • the invention relates to the technical field of gas cookers, in particular to an inner ring fire cover and a gas stove.
  • the inner ring fire cover is one of the important components of the burner. Typically, the inner ring fire cover is fixed to the burner and communicates with the gas passage within the combustor to extract gas or natural gas from within the gas passage of the combustor.
  • the inner ring fire cover of the gas stove usually has a fire hole at its top or side wall.
  • the fire hole on the side wall of the inner ring fire cover can cause the gas stove to ignite the flame from the side wall of the inner ring fire cover, so that part of the heat is diffused from the side wall of the inner ring fire cover, which is disadvantageous to the gas gathering heat, thus making the gas
  • the heat recovery efficiency of the stove is low.
  • the fire hole on the top wall of the inner ring fire cover enables the gas stove to directly illuminate the flame from the top wall of the inner ring fire cover, since the gas drawn from the fire hole located at the center of the top wall cannot be in full contact with the air, so the gas Insufficient combustion results in low heat recovery efficiency of the gas stove.
  • the thickness of the top wall of the inner ring fire cover is thin, and the multi-strand gas column that is injected has an interference phenomenon when burning, thereby further reducing the combustion efficiency of the gas stove.
  • a primary object of the present invention is to provide an inner ring fire cover designed to improve the combustion efficiency of a gas range.
  • the present invention provides an inner ring fire cover, in which two or two are formed in the inner ring fire cover to upload a fire passage, and two or more groups are provided in a manner beneficial to gas combustion.
  • the fire hole, the two or more sets of fire holes are respectively connected to the two or two in one-to-one correspondence with the fire channel.
  • the inner ring fire cover includes a fire cover body and an upper cover for covering the fire cover body, the upper cover is configured in a sheet shape, and the plurality of fire passages are respectively disposed in the The fire covers the body.
  • the fire cover body includes a first surrounding wall, a second surrounding wall located in the first surrounding wall, and at least one connecting rib connecting the first surrounding wall and the second surrounding wall, the first The space enclosed by the two surrounding walls constitutes a first fire passage, and the space surrounded by the first surrounding wall and the second surrounding wall constitutes a second fire passage; the plurality of sets of fire holes are respectively formed on the upper cover
  • the top wall includes a first set of fire holes and a second set of fire holes, the second set of fire holes are located on an outer peripheral side of the first set of fire holes; when the upper cover covers the fire cover body At the top, the first set of fire holes are connected to the first fire channel The second group of fire holes is in communication with the second fire passage.
  • the upper cover is further provided with a plurality of first fire holes arranged in at least one row and/or column, and the plurality of first fire holes are located in the first group of fire holes Between the second set of fire holes, an outer flame that is directed by the second set of fire holes is directed toward the first set of fire holes.
  • thermocouple flame-stabilizing groove is defined between the second surrounding wall of the fire cover body and the first surrounding wall, and the first surrounding wall is open to communicate with the thermocouple flame holding groove.
  • the second fire hole is defined between the second surrounding wall of the fire cover body and the first surrounding wall, and the first surrounding wall is open to communicate with the thermocouple flame holding groove.
  • the upper cover has a thickness of 0.6-2 mm and each fire hole has a diameter of 0.4-1.6 mm.
  • the top edge of the first surrounding wall is recessed inwardly to form an annular buckle, and when the upper cover covers the top of the fire cover body, the side wall of the upper cover and the ring Buckle matching.
  • the fire cover body includes a top wall and a first surrounding wall extending downward from a periphery of the top wall, a through hole is formed in a middle portion of the top wall, and a second hole is disposed in the first surrounding wall a surrounding wall, the space surrounded by the second surrounding wall communicates with the through hole to form a first fire passage; the space enclosed by the first surrounding wall and the second surrounding wall constitutes a second fire a first group of fire holes is formed in the top wall of the upper cover, and the first group of fire holes communicate with the first fire passage when the upper cover covers the top of the fire cover body; a second group of fire holes is defined in the first surrounding wall of the fire cover body, the second group of fire holes are in communication with the second fire passage, and the second group of fire holes are from the first surrounding wall
  • the inner surface extends obliquely upward to the outer surface of the first surrounding wall.
  • the inner ring fire cover includes a fire cover body, a central fire cover disposed in the fire cover body, and a limit member for limiting the center fire cover, wherein the fire cover body
  • the top wall and the first surrounding wall extending downward from the periphery of the top wall, the top wall of the top wall is provided with a through hole;
  • the first surrounding wall is provided with a second surrounding wall, and the second surrounding wall a space formed in communication with the through hole to form a first fire passage;
  • a space defined by the first surrounding wall and the second surrounding wall constitutes a second fire passage;
  • the center fire cover is opened first a group of fire holes extending axially between a top wall and a bottom wall of the center fire cover, when the center fire cover is installed in the first fire passage a first group of fire holes communicating with the through holes;
  • a bottom portion of the second surrounding wall is provided with a stop for stopping the central fire cover, the center fire cover being mounted at the stop portion After the between the limiting members, the portion of the
  • the first surrounding wall is provided with a second set of fire holes staggered, and the second group of fire holes penetrates the first surrounding wall and communicates with the second fire passage.
  • thermocouple flame holding groove is opened between the second surrounding wall and the first surrounding wall, and the first surrounding wall is provided with a fire communicating with the thermocouple flame holding groove. hole.
  • a top wall of the center fire cover is provided with a boss extending from the fire cover body The top wall, or the top surface of the boss, is flush with the top surface of the fire cover body.
  • the boss includes a plurality of spaced apart raised portions and a recessed portion between adjacent raised portions, the first set of fire holes being respectively located at the raised portion and On the depressed portion.
  • the first set of fire holes on the raised portion are distributed in a honeycomb shape.
  • the central fire cover is made of ceramic.
  • an inner surface of the second surrounding wall of the fire cover body is provided with an annular card slot for receiving the limiting member, and the limiting member is a snap ring.
  • the snap ring is a split ring, and both ends of the snap ring are bent inwardly to form a hand-held segment, and a middle portion of the snap ring is recessed inwardly to protrude from the second surrounding wall The inner surface.
  • An inner ring fire cover includes a first fire passage and a second fire passage, and a first group of fire holes and a second one in one-to-one correspondence with the first fire passage and the second fire passage, respectively a group of fire holes, wherein the gas is transmitted to the first group of fire holes and the second group of fire holes correspondingly through the first fire passage and the second fire passage, and from the first group of fire holes and the second group of fire holes The flame is ejected. Since the first group of fire holes and the second group of fire holes are arranged on the inner ring fire cover in a manner favorable for gas combustion, the gas combustion is sufficient, and the combustion efficiency of the gas is improved.
  • the invention also proposes a gas stove comprising one or two burners, the burner comprising a burner body and an outer ring fire cover and an inner ring fire cover mounted on the burner body, the inner ring fire cover Provided within the outer ring fire cover, the inner ring fire cover is an inner ring fire cover in accordance with the above-described embodiments of the present invention.
  • the combustion efficiency of the gas cooker according to the embodiment of the present invention is also improved.
  • FIG. 1 is a schematic exploded view of an inner ring fire cover according to an embodiment of the invention.
  • Figure 2 is a schematic view showing the structure of the fire cover body of the inner ring fire cover shown in Figure 1;
  • Figure 3 is a schematic structural view of the upper cover of the inner ring fire cover shown in Figure 1;
  • FIG. 4 is a schematic exploded view of an inner ring fire cover according to another embodiment of the present invention.
  • Figure 5 is a schematic view showing the structure of the fire cover body of the inner ring fire cover shown in Figure 4;
  • Figure 6 is a schematic structural view of the upper cover of the inner ring fire cover shown in Figure 4.
  • FIG. 7 is a schematic exploded view of an inner ring fire cover according to still another embodiment of the present invention.
  • Figure 8 is a plan view of the assembled inner ring fire cover shown in Figure 7;
  • Figure 9 is a cross-sectional view of the inner ring fire cover shown in Figure 8 taken along line A-A;
  • Figure 10 is a partial enlarged view of the portion B in Figure 9;
  • Figure 11 is a schematic view showing the structure of the fire cover body of the inner ring fire cover shown in Figure 7;
  • Figure 12 is a schematic view showing the structure of the center fire cover of the inner ring fire cover shown in Figure 7;
  • Figure 13 is a schematic structural view of the limiting member of the inner ring fire cover shown in Figure 7;
  • Figure 14 is a schematic exploded view of a burner according to an embodiment of the present invention.
  • Figure 15 is an assembled view of a burner according to another embodiment of the present invention.
  • FIG. 16 is a schematic exploded view of a gas stove according to an embodiment of the invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be performed by mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.
  • Embodiments of the present invention provide an inner ring fire cover.
  • a plurality of fire passages are formed in the inner ring fire cover according to an embodiment of the present invention, and a plurality of fire holes are provided in a manner beneficial to combustion of the gas, and the plurality of fire holes are respectively associated with the plurality of fire passages Connected one by one.
  • the inner ring fire cover includes a fire cover body 2 and an upper cover 1 for covering the fire cover body 2.
  • the upper cover 1 is formed in a sheet shape, and the fire cover body 2 is formed therein.
  • a plurality of fire passages are provided, and a plurality of fire holes are arranged at the top of the upper cover 1.
  • the upper cover 1 covers the top of the fire cover body 2, the plurality of sets of fire holes respectively communicate with the plurality of fire passages in one-to-one correspondence.
  • the upper cover 1 may be made of a metal or a metal alloy.
  • the metal includes copper, steel, etc.
  • the metal alloy may be a copper-containing metal alloy or a copper-plated metal alloy, so that the upper cover 1 is resistant to high temperature, corrosion, deformation, and durable.
  • the fire cover body 2 includes a first surrounding wall 21, a second surrounding wall 22 located in the first surrounding wall 21, and at least one connecting rib 23 connecting the first surrounding wall 21 and the second surrounding wall 22,
  • the space enclosed by the second surrounding wall 22 constitutes the first fire passage 24, and the space surrounded by the first surrounding wall 21 and the second surrounding wall 22 constitutes the second fire passage 25.
  • the plurality of sets of fire holes include a first set of fire holes 11 and a second set of fire holes 14, and the second set of fire holes 14 are located on the outer peripheral side of the first set of fire holes 11.
  • the first group of fire holes 11 communicate with the first fire passage 24, and the second group of fire holes 14 communicate with the second fire passage 25.
  • the inner ring fire cover ejects a metal foil fire in the inner ring, and the inner ring fire cover also emits a metal foil fire in the middle ring, and the outer ring fire cover ejects the atmosphere in the outer ring to burn the fire.
  • the fire cover body 2 includes a first surrounding wall 21 and a second surrounding wall 22, and the first surrounding wall 21 and the second surrounding wall 22 may be coaxially disposed, and the first surrounding wall 21 and the second surrounding wall 22 may be Constructed in a variety of shapes, the specific shape can be designed according to actual requirements.
  • the shape of the upper cover 1 can be designed according to actual needs, and the shape thereof can be circular, elliptical or other shapes.
  • the first group of fire holes 11 provided on the upper cover 1 may be distributed in a circular shape or a circular shape.
  • Set on the upper cover 1 The second set of fire holes 14 may be distributed in a circular shape.
  • a gap is reserved between the second group of fire holes 14 and the first group of fire holes 11 to form a combustion space between the two layers of flames respectively ejected from the first group of fire holes 11 and the second group of fire holes 14 respectively. Avoid flame interference, and the air in the combustion space can be replenished to the inner gas to fully burn the inner gas.
  • the inner ring fire cover includes a fire cover body 2 and a sheet-shaped upper cover 1
  • the fire cover body 2 mainly includes a first surrounding wall 21 and a second surrounding wall 22
  • the second surrounding wall 22 is enclosed
  • the space constitutes the first fire passage 24, and the space surrounded by the first surrounding wall 21 and the second surrounding wall 22 constitutes a second fire passage 25, and the upper cover 1 is provided with a communication with the first fire passage 24.
  • a two-layer flame distributed inside and outside is formed on the top of the upper cover 1.
  • the upper cover 1 is further provided with a plurality of first fire holes 13 arranged in at least one row and/or column, and the first fire holes 13 are located in the first group of fire holes 11 and the second group of fire holes 14 Between the outer layer of flames directed by the second group of fire holes 14 is directed to the first group of fire holes 11, specifically to the position where the inner layer of gas is ejected.
  • the plurality of first fire passage holes 13 may be arranged in a row or rows, and/or arranged in a column or columns.
  • the first fire holes 13 arranged in a plurality of rows and/or columns may be staggered. It will be appreciated that the first fire passage 13 may be provided as an elongated fire channel to direct the outer flame to the inner gas.
  • thermocouple flame-proof groove 26 is opened between the second surrounding wall 22 of the fire cover body 2 and the first surrounding wall 21, and the position of the corresponding thermocouple flame-stabilizing groove 26 of the first surrounding wall 21 is opened.
  • the fire hole 212 and the second fire hole 212 communicate with the thermocouple flame holding groove 26 to ensure that the flame can be burned to the thermocouple when the inner ring fire cover is in the minimum fire state, so that the thermocouple continuously generates an electromotive force to control the switch.
  • the solenoid valve is open to avoid the problem of flameout.
  • the thickness of the upper cover 1 is 0.6-2 mm, and the diameter of each of the fire holes on the upper cover 1 is 0.4-1.6 mm.
  • the upper cover 1 is thinner and is convenient for punching.
  • the upper cover 1 has a thickness of 1 mm.
  • Each fire hole has a hole diameter of 0.4-1.6mm and is laser punched to improve the punching accuracy.
  • each fire hole has a pore size of 1 mm.
  • the top edge of the first surrounding wall 21 is recessed inwardly to form an annular buckle 211, and when the upper cover 1 covers the fire cover body
  • the top side 12 of the upper cover 1 cooperates with the annular buckle base 211, that is, the side wall 12 of the upper cover 1 covers the annular buckle base 211.
  • the sidewall 12 of the upper cover 1 may be extended, and a positioning hole or a positioning post may be disposed on the extended portion, and a corresponding positioning post or positioning hole may be disposed on the first surrounding wall 21 to implement the upper positioning wall or the positioning hole.
  • the cover 1 is engaged with the fire cover body 2.
  • the side wall 12 and the first surrounding wall 21 of the upper cover 1 may be respectively provided with extending portions extending radially outward, and the extending portions are corresponding to each other and provided with a passage. a hole or a screw hole to achieve a threaded connection of the upper cover 1 and the fire cover body 2.
  • the first group of fire holes and the second group of fire holes enable the extracted gas to be ejected from the top of the inner ring fire cover, and the inner and outer two layers of flames which are spaced apart from each other are formed at the top of the upper cover. And a combustion space is formed between the two layers of flames, and the air in the combustion space can be timely replenished into the inner layer flame, so that the inner layer flame is fully burned, the phenomenon of insufficient combustion is avoided, the combustion efficiency of the gas is increased, and the combustion of the gas stove is increased. Thermal efficiency.
  • the inner ring fire cover includes a fire cover body 2 and an upper cover 1 for covering the fire cover body 2, and the upper cover 1 is formed in a sheet shape.
  • the hood body 2 includes a top wall and a first surrounding wall 21 extending downward from a periphery of the top wall.
  • a through hole 200 is defined in a middle portion of the top wall, and a second surrounding wall 22 is disposed in the first surrounding wall 21.
  • the space enclosed by the second surrounding wall 22 communicates with the through hole 200 to constitute the first fire passage 24, and the space surrounded by the first surrounding wall 21 and the second surrounding wall 22 constitutes the second fire passage 25.
  • a first group of fire holes 11 are opened in the top wall of the upper cover 1, and the first group of fire holes 11 respectively penetrate the top wall of the upper cover 1 in the axial direction (ie, along the thickness direction of the top wall of the upper cover 1).
  • the first group of fire holes 11 communicate with the first fire passage 24.
  • a second group of fire holes 213 are opened in the first surrounding wall 21 of the hood body 2, the second group of fire holes 213 are in communication with the second fire passages 25, and the second group of fire holes 213 are from the first surrounding wall 21
  • the surface extends obliquely upward to the outer surface of the first surrounding wall 21.
  • the inner ring fire cover includes a top wall and a first surrounding wall 21, and the first surrounding wall 21 extends downward from the periphery of the top wall.
  • the top wall can be of various shapes, such as a circle or a polygon, etc., and the corresponding first surrounding wall 21 can also be of various shapes, and should not be limited to the drawings.
  • the second surrounding wall 22 may be disposed coaxially with the first surrounding wall 21, along the circumference of the through hole 200, and may also be configured in a variety of shapes.
  • the second group of fire holes 213 extending obliquely upward from the inner surface of the first surrounding wall 21 to the outer surface of the first surrounding wall 21 have the functions of increasing the fire-injecting area and collecting heat of the gas stove, and cooperate
  • the first group of fire holes 11 can have a better heating area and at the same time improve the combustion efficiency of the gas stove.
  • the top of the fire cover body 2 is provided with a boss 210, and the side wall 12 of the upper cover 1 is covered on the boss 210.
  • the sidewall 12 of the upper cover 1 can be extended, and a positioning hole or a positioning post is disposed on the extended portion, and a corresponding positioning post or positioning hole is disposed on the boss 210 to implement the upper cover. 1 cooperate with the fire cover body 2.
  • the side wall 12 of the upper cover 1 may also be provided with an extension extending radially outward.
  • a through hole or a screw hole is formed in the corresponding portion of the extending portion and the top wall of the upper cover 1 to achieve a threaded fixed connection between the upper cover 1 and the fire cover body 2.
  • the top wall of the hood body 2 is provided with a radially outwardly extending umbrella 214 for blocking the ignition needle and prolonging the service life of the igniter.
  • the inner ring fire cover may further include the same other structures as the embodiment 1, and will not be described in detail herein.
  • the side wall of the fire cover body is provided with a second group of fire holes extending obliquely upward, which can increase the fire-breathing area, and is advantageous for collecting heat
  • the upper cover is provided with the first group of fires.
  • the hole, the first group of fire holes and the second group of fire holes cooperate to further increase the fire area of the gas stove and improve the combustion efficiency of the gas stove.
  • the inner ring fire cover includes a fire cover body 1', a center fire cover 2', and a limit member 3'.
  • the fire cover body 1' includes a top wall 10' and a first surrounding wall 11' extending downward from the periphery of the top wall 10'.
  • a through hole 100' is opened in the middle of the top wall 10'.
  • a second surrounding wall 12' is disposed in the first surrounding wall 11'. The space enclosed by the second surrounding wall 12' communicates with the through hole 100' to constitute the first fire passage 13'.
  • the space enclosed by the first surrounding wall 11' and the second surrounding wall 12' constitutes a second fire passage 14'.
  • the central fire cover 2' is provided with a first group of fire holes 21', and the first group of fire holes 21' extend axially between the top wall and the bottom wall of the center fire cover 2'.
  • the first group of fire holes 21' communicate with the through hole 100'.
  • the inner surface of the second surrounding wall 12' is provided with a stopping portion 120' for stopping the central fire cover 2'. After the central fire cover 2' is installed between the stopping portion 120' and the limiting member 3', A portion of the stopper 3' protruding from the inner surface of the second surrounding wall 12' abuts against the center fire cover 2' to limit the center fire cover 2'.
  • the fire cover body 1' includes a top wall 10' and a first surrounding wall 11', and the first surrounding wall 11' extends downward from the periphery of the top wall 10'.
  • the top wall 10' can be of various shapes, such as a circle or a polygon, etc., and the corresponding first wall 11' can also be of various shapes, and should not be limited to the drawings.
  • the second surrounding wall 12' may be disposed coaxially with the first surrounding wall 11' and disposed along the circumference of the through hole 100', and may also be configured in various shapes.
  • the central fire cover 2' can be matched with the second surrounding wall 12'.
  • the central fire cover 2' When assembled, the central fire cover 2' is inserted into the space enclosed by the second surrounding wall 12', and then passes through the stopping portion 120. ⁇ and the limiter 3' limit it.
  • the central fire cover 2' needs to be disassembled, it is only necessary to remove the limiting member 3' from the second surrounding wall 12', and the central fire cover 2' can fall out of the first fire passage 13'.
  • the inner ring fire cover includes a fire cover body 1', a center fire cover 2' embedded in the fire cover body 1', and a limit member 3 for limiting the center fire cover 2' to the fire cover body 1'. ⁇ , thus facilitating the disassembly and assembly of the inner ring fire cover.
  • a first group of fire holes 21' is disposed on the center fire cover 2' of the fire cover body 1', and the flame can pass through the first group of fire holes 21' and then ejected by the through holes 100'. After the center fire cover 2' is embedded in the fire cover body 1', the gas is completely premixed and burned in the first fire passage 13', generating infrared
  • the fire has the advantages of high flame temperature and good ductility.
  • the limiting member 3' can be configured in various shapes, and the structure for accommodating the limiting member 3' can be an annular card slot 121'.
  • a plurality of recesses may be provided on the inner surface of the second surrounding wall 12' to accommodate the limiting member 3'.
  • the limiting member 3' is correspondingly plural, and its shape is adapted to the recess, so that the limiting member 3' can be accommodated in the recess, and the center is supported by the plurality of limiting members 3' Fire cover 2 ⁇ .
  • the limiting member 3' can also be configured as a ring.
  • a fire hole may be formed in the first surrounding wall 11'.
  • the first surrounding wall 11' of the fire cover body 1' is provided with a second group of fire holes 111', and the second group of fire holes 111' penetrates the first surrounding wall 11'.
  • the second group of fire holes 111' may be arranged in a row and distributed along the circumferential direction of the first surrounding wall 11', or may be arranged in a plurality of rows, and the rows are staggered.
  • the fire cover body 1' has both a first group of fire holes 21' (for forming an infrared fire and achieving full premixed combustion) and a second group of fire holes 111' (for achieving atmospheric combustion).
  • the combination of the full premixed burner and the atmospheric burner can be realized, so that the burner with the burner body 1' has a uniform flame, a strong firepower, a larger load regulation ratio, and can reduce harmful gas emissions and improve The thermal efficiency and environmental performance of the burner.
  • thermocouple flame-proof groove 15' is disposed between the first surrounding wall 11' and the second surrounding wall 12', and the first surrounding wall 11
  • the position of the corresponding thermocouple flame chamber 15' is provided with a fire hole 151' to ensure that the flame can burn to the thermocouple when the fire cover body 1' is in the minimum fire state, so that the thermocouple continuously generates an electromotive force to control the switch.
  • the solenoid valve is open to avoid the problem of flameout.
  • the inner surface of the second surrounding wall 12' of the fire cover body 1' is provided with an annular card slot 121' for accommodating the limiting member 3', and the limiting member 3' is constructed.
  • the snap ring 310 ⁇ can be received in the annular card slot 121', and the snap ring 310' portion is recessed inwardly to abut the bottom of the central fire cover 2'.
  • the snap ring 310' is a split ring, including two bent hand segments 312' and a concave middle portion 311'.
  • the two hand-held segments 312' are pinched, and the snap ring 310' is deformed to reduce its inner diameter.
  • the snap ring 310' can be fitted into or detached from the annular card slot 121'.
  • the concave middle portion 311' will abut the bottom of the central fire cover 2', and the stop portion 120' and the second surrounding wall 12 of the fire cover body 1' ⁇ With a limit center fire cover 2 ⁇ .
  • the shape of the snap ring 310' is not limited to a circular ring shape, and may be an open triangular shape or a quadrangular shape or other shapes as long as the snap ring 310' is secured in multiple positions (for example, two or more).
  • the annular card slot 121' is in contact with the center fire cover 2' limit.
  • the material of the snap ring 310' may be elastic steel, and the diameter of the snap ring 310' ranges from 0.6 to 1.5 cm.
  • the snap ring 310' has better elasticity, which facilitates the application of force and limit to facilitate the disassembly and assembly of the central fire cover 2'.
  • the outer diameter of the snap ring 310' may be 0.6 cm, 1.2 cm, and 1.5 cm. It should be noted that in addition to the above outer diameter dimensions, other sizes can be flexibly designed as needed.
  • the material of the central fire cover 2' may be ceramic, and the depth of the first group of fire holes 21' on the central fire cover 2' is 8-15 mm.
  • the first group of fire holes 21' have a hole depth of 8 mm, 10 mm and 15 mm. Since the depth of the first group of fire holes 21' is long, the first group of fire holes 21' on the center fire cover 2' are divided into a plurality of independent gas holes to avoid flame interference.
  • the limiting member 3' can be configured as a snap ring 310' or a hook or the like, and the limiting member 3' is engaged with the annular card slot of the fire cover body 1'.
  • the second surrounding wall 12' of the fire cover body 1' may also be provided with a projection or rib adapted to engage the snap ring 310' to limit the snap ring 310'.
  • the top of the center fire cover 2' abuts against the stop portion 120' of the fire cover body 1', and the limit member 3' abuts against the bottom or side wall of the fire cover body 1', thereby obtaining a better fastening effect.
  • the second surrounding wall 12' of the fire cover body 1' is provided with an axially extending positioning post 17', and the positioning post 17' is adapted to be fixed in the positioning hole of the burner body to fire the inner ring fire cover The body is fixed.
  • the hood body 1' is provided with a radially extending umbrella 16' for shielding the ignition needle.
  • Figure 12 shows the specific structure of the center fire cover 2'.
  • the top wall of the center fire cover 2' is provided with a boss 22' which protrudes from the top wall of the fire cover body 1' and between the fire cover body 1' There is a height difference. Since the aperture of the first group of fire holes 21' on the center fire cover 2' is small, the liquid (for example, soup) falling on the top of the boss 22' will flow to the lower cover body 1', thereby avoiding The soup flows in and blocks the first set of fire holes 21' on the center fire cover 2'.
  • the liquid for example, soup
  • the top surface of the boss 22' is configured as a circular arc surface, which facilitates guiding the soup flowing to the top of the boss 22' to the fire cover body 1', which is of the fire cover body 1'
  • the top surface can be embodied as a flat surface or can also be embodied as a circular surface.
  • the top surface of the boss 22' is flush with the top surface of the fire cover body 1' to improve assembly uniformity and provide a better visual effect.
  • the boss 22' includes a plurality of raised portions 221' spaced apart from each other and a recessed portion 222' between the adjacent raised portions 221', the first set of fire holes 21' are respectively located on the convex portion 221' and the concave portion 222'.
  • the first group of fire holes 21' are respectively formed on the convex portion 221' and the recess portion 222' of the boss 22' to increase the contact area between the gas and the air;
  • the first group of fire holes 21' can reduce the amount of gas discharged and provide standard heat consumption with reduced gas discharge, thereby saving gas and reducing the cost of use.
  • the first set of fire holes 21' are distributed in a honeycomb shape on the raised portions 221'.
  • the surface area of the first group of fire holes 21' of the honeycomb shape is increased, thereby increasing the heat collecting effect of the center fire cover 2'.
  • an embodiment of the present invention further provides a gas stove including one or two burners, and a single burner includes a burner body 4'' and is mounted to the burner body 4'.
  • the inner ring fire cover 1 ⁇ is set in the outer ring fire cover 2 ⁇ , that is, the outer ring fire cover 2 ⁇ is set around the inner ring fire cover 1 ⁇ , and the specific structure of the inner ring fire cover 1 ⁇ is referred to the above implementation. example.
  • the gas stove may adopt some or all of the technical solutions in the foregoing embodiments, and may have some or all of the beneficial effects brought about by the technical solutions in the foregoing embodiments, and details are not described herein again.
  • the gas stove includes a panel 5'', a bottom case 6'', and two burners housed in a space surrounded by the panel 5'' and the bottom case 6'', as shown in FIG.
  • Figure 14 is an exploded view of a burner according to an embodiment of the present invention, wherein the inner ring fire cover 1'' is constructed as the inner ring fire cover of the above embodiment 1.
  • Figure 15 is a schematic view of a burner according to another embodiment of the present invention, wherein the inner ring fire cover 1'' is constructed as the inner ring fire cover of the above embodiment 3.
  • the burner may also include only the inner ring fire cover body 1'' and the matching burner body 4'' instead of Including the outer ring fire cover body 2 ⁇ and the gas distribution plate 3 ⁇ , to achieve atmospheric combustion and full premixed combustion two-ring fire burner.
  • the inner ring fire cover 1'' has a first fire passage and a second fire passage
  • the outer ring fire cover 2' has a third fire passage
  • the burner can An inner ring channel communicating with the first fire passage, a middle ring passage communicating with the second fire passage, and an outer ring passage communicating with the third fire passage are disposed.
  • the inner ring channel, the middle ring channel and the outer ring channel are respectively connected with three ejector tubes 41' ⁇ , thereby realizing three-channel independent combustion ejector, thereby improving the ventilation of the gas stove.
  • the three ejector tubes 41 ⁇ are designed using the Venturi principle to accelerate the rate at which gas is exported.
  • the entire gas stove adopts the ejector combustion assisting and the three-stage air ejector combustion assisting technology on the nozzle, the ejector nozzle and the gas distribution disc respectively, thereby improving the combustion efficiency of the gas, saving the gas cost, and thereby improving the quality of the whole product.

Abstract

一种内环火盖（1''）及燃气灶，内环火盖（1''）包括火盖本体（2）和上盖（1），火盖本体（2）内形成有多个传火通道，上盖（1）顶部开设有多组火孔，多组火孔分别与多个传火通道一一对应地连通。燃气灶包括一个或两个燃烧器，燃烧器包括燃烧器本体（4''）、外环火盖（2''）和内环火盖（1''）。该内环火盖（1''）及燃气灶便于聚热，提高热效率。

Description

内环火盖及燃气灶 技术领域
本发明涉及燃气灶具技术领域，特别涉及一种内环火盖及燃气灶。
背景技术
内环火盖是燃烧器的重要组成部件之一。通常，内环火盖固定于燃烧器上且与燃烧器内的燃气通道连通，以从燃烧器的燃气通道内从引出煤气或天然气。
现有技术中，燃气灶的内环火盖通常在其顶部或侧壁设置火孔。内环火盖的侧壁上的火孔，能够使燃气灶从内环火盖的侧壁引射出火焰，致使部分热量从内环火盖的侧壁扩散，不利于燃气聚热，因而使燃气灶的燃热效率低。内环火盖的顶壁上的火孔，能够使燃气灶从内环火盖的顶壁直接引射出火焰，由于从位于顶壁中心处的火孔引出的燃气不能与空气充分接触，所以燃气燃烧不充分，致使燃气灶的燃热效率低。另外，在内环火盖的顶壁设有火孔的情况下，内环火盖的顶壁厚度较薄，引射的多股气体柱燃烧时存在干涉现象，进一步降低燃气灶的燃热效率。
发明内容
本发明的主要目的是提供一种内环火盖，旨在提高提高燃气灶的燃热效率。
为实现上述目的，本发明提出一种内环火盖，所述内环火盖内形成有两个或两个以上传火通道，并以有利于燃气燃烧的方式设有两组或两组以上火孔，所述两组或两组以上火孔分别与所述两个或两个以上传火通道一一对应地连通。
在一些实施例中，内环火盖包括火盖本体和用于盖合所述火盖本体的上盖，所述上盖构造为片状，且所述多个传火通道分别设置在所述火盖本体内。
在一些实施例中，所述火盖本体包括第一围壁、位于第一围壁内的第二围壁以及连接所述第一围壁与第二围壁的至少一个连接筋，所述第二围壁所围成的空间构成第一传火通道，所述第一围壁与第二围壁围成的空间构成第二传火通道；所述多组火孔分别形成在所述上盖的顶壁上且包括第一组火孔及第二组火孔，所述第二组火孔位于所述第一组火孔的外周侧；当所述上盖盖合所述火盖本体的顶部时，所述第一组火孔与所述第一传火通道连 通，所述第二组火孔与所述第二传火通道连通。
在一些实施例中，所述上盖上还开设有多个排成至少一排和/或列的第一传火孔，所述多个第一传火孔位于所述第一组火孔与所述第二组火孔之间，以将由所述第二组火孔引射的外层火焰引向所述第一组火孔。
在一些实施例中，所述火盖本体的第二围壁与第一围壁之间开设有热电偶稳焰槽，所述第一围壁上开设有与所述热电偶稳焰槽连通的第二传火孔。
在一些实施例中，所述上盖的厚度为0.6-2mm，每个火孔的孔径为0.4-1.6mm。
在一些实施例中，所述第一围壁的顶部边缘向内凹陷形成环形扣台，当所述上盖盖合所述火盖本体的顶部时，所述上盖的侧壁与所述环形扣台配合。
在一些实施例中，所述火盖本体包括顶壁和自顶壁周缘向下延伸的第一围壁，所述顶壁中部开设有通孔；在所述第一围壁内设有第二围壁，所述第二围壁所围成的空间与所述通孔连通，构成第一传火通道；所述第一围壁与所述第二围壁围成的空间构成第二传火通道；所述上盖顶壁开设有第一组火孔，当所述上盖盖合所述火盖本体的顶部时，所述第一组火孔与所述第一传火通道连通；所述火盖本体的第一围壁上开设有第二组火孔，所述第二组火孔与所述第二传火通道连通，且所述第二组火孔从所述第一围壁的内表面倾斜向上地延伸至所述第一围壁的外表面。
在一些实施例中，内环火盖包括火盖本体，设在所述火盖本体内的中心火盖，以及用于限位所述中心火盖的限位件，其中，所述火盖本体包括顶壁和自顶壁周缘向下延伸的第一围壁，所述顶壁中部开设有通孔；在所述第一围壁内设有第二围壁，所述第二围壁所围成的空间与所述通孔连通，构成第一传火通道；所述第一围壁与所述第二围壁围成的空间构成第二传火通道；所述中心火盖开设有第一组火孔，所述第一组火孔在所述中心火盖的顶壁与底壁之间轴向延伸，当所述中心火盖被安装在所述第一传火通道内时，所述第一组火孔与所述通孔连通；所述第二围壁的内壁上设有用以止挡所述中心火盖的止挡部，所述中心火盖被安装在所述止挡部与所述限位件之间后，所述限位件凸出于所述第二围壁内表面的部分抵接所述中心火盖，以将所述中心火盖限位。
在一些实施例中，所述第一围壁上开设有交错分布的第二组火孔，所述第二组火孔贯穿所述第一围壁，并与所述第二传火通道连通。
在一些实施例中，所述第二围壁与所述第一围壁之间开设有热电偶稳焰槽，所述第一围壁上开设有与所述热电偶稳焰槽连通的传火孔。
在一些实施例中，所述中心火盖的顶壁上设置有凸台，所述凸台伸出所述火盖本体的 顶壁，或所述凸台的顶面与所述火盖本体的顶面齐平。
在一些实施例中，所述凸台包括多个间隔开设置的凸起部以及位于相邻所述凸起部之间的凹陷部，所述第一组火孔分别位于所述凸起部及所述凹陷部上。
在一些实施例中，所述凸起部上的第一组火孔呈蜂窝状分布。
在一些实施例中，所述中心火盖由陶瓷制成。
在一些实施例中，所述火盖本体的第二围壁的内表面开设有用于容置所述限位件的环形卡槽，所述限位件为卡环。
在一些实施例中，所述卡环为开口环，所述卡环的两端向内弯折以形成手持段，所述卡环的中段向内凹陷以凸出于所述第二围壁的内表面。
根据本发明实施例的内环火盖包括第一传火通道和第二传火通道，以及分别与第一传火通道和第二传火通道一一对应连通的第一组火孔和第二组火孔，使得可以通过第一传火通道和第二传火通道对应地将燃气传递到第一组火孔和第二组火孔，并从第一组火孔和第二组火孔处引射出火焰，由于第一组火孔和第二组火孔以有利于燃气燃烧的方式布置在内环火盖上，所以燃气燃烧充分，燃气的燃烧效率得到提高。
本发明还提出了一种燃气灶，包括一个或者两个燃烧器，所述燃烧器包括燃烧器本体以及安装于燃烧器本体上的外环火盖和内环火盖，所述内环火盖设置在外环火盖的内，所述内环火盖为根据本发明上述实施例的内环火盖。
根据本发明实施例的燃气灶，由于根据本发明上述实施的内环火盖能够提高燃气的燃烧效率，因此根据本发明实施例的燃气灶的燃热效率也得到提高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为根据本发明一实施例的内环火盖的分解结构示意图；
图2为图1中所示内环火盖的火盖本体的结构示意图；
图3为图1中所示内环火盖的上盖的结构示意图；
图4为根据本发明另一实施例的内环火盖的分解结构示意图；
图5为图4中所示内环火盖的火盖本体的结构示意图；
图6为图4中所示内环火盖的上盖的结构示意图；
图7为根据本发明再一实施例的内环火盖的分解结构示意图；
图8为图7中所示装配后的内环火盖的俯视图；
图9为图8中所示内环火盖的沿A-A线的剖视图；
图10为图9中B处的局部放大示意图；
图11为图7中所示内环火盖的火盖本体的结构示意图；
图12为图7中所示内环火盖的中心火盖的结构示意图；
图13为图7中所示内环火盖的限位件的结构示意图；
图14为根据本发明一实施例的燃烧器的分解结构示意图。
图15为根据本发明另一实施例的燃烧器的装配图；以及
图16为根据本发明一实施例的燃气灶的分解结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可 以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
本发明实施例提出一种内环火盖。根据本发明实施例的内环火盖内形成有多个传火通道，并以有利于燃气燃烧的方式设有多组火孔，所述多组火孔分别与所述多个传火通道一一对应地连通。
下面参照图1-16，分别对根据本发明不同实施例的内环火盖进行描述。
实施例1
参照图1至图3，本实施例中，内环火盖包括火盖本体2以及用于盖合火盖本体2的上盖1，上盖1形成为片状，火盖本体2内形成有多个传火通道，上盖1顶部开设有多组火孔。当上盖1盖合火盖本体2的顶部时，多组火孔分别与多个传火通道一一对应地连通。其中，上盖1可由金属或金属合金制成。例如，金属包括铜、钢等，而金属合金可以是含铜的金属合金或者镀铜的金属合金，以使上盖1抗高温、抗腐蚀，不易变形，能够持久使用。
在本实施例中，火盖本体2包括第一围壁21、位于第一围壁21内的第二围壁22以及连接第一围壁21与第二围壁22的至少一个连接筋23，第二围壁22所围成的空间构成第一传火通道24，第一围壁21与第二围壁22围成的空间构成第二传火通道25。
多组火孔包括第一组火孔11及第二组火孔14，第二组火孔14位于第一组火孔11的外周侧。当上盖1盖合火盖本体2的顶部时，第一组火孔11与第一传火通道24连通，第二组火孔14与第二传火通道25连通。由此，内环火盖在内环喷出金属薄片火，内环火盖在中环也喷出金属薄片火，外环火盖在外环喷出大气燃烧火。
本实施例中，火盖本体2包括第一围壁21和第二围壁22，第一围壁21和第二围壁22可以同轴设置，第一围壁21和第二围壁22可以构造为多种形状，具体的形状可根据实际的要求来设计。
本实施例中，上盖1的形状可以根据实际需要来设计，其形状可以为圆形、椭圆形或者其他形状。上盖1上设置的第一组火孔11可呈圆形分布或圆环形分布。上盖1上设置的 第二组火孔14可呈圆环形分布。第二组火孔14与第一组火孔11之间预留有间隙，以使分别从第一组火孔11和第二组火孔14喷出的两层火焰之间形成燃烧空间，进而避免火焰干涉，同时燃烧空间的空气能够补充至内层燃气，使内层燃气充分燃烧。
在本实施例中，内环火盖包括火盖本体2及片状的上盖1，该火盖本体2主要包括第一围壁21和第二围壁22，第二围壁22所围成的空间构成第一传火通道24，第一围壁21与第二围壁22所围成的空间构成第二传火通道25，该上盖1上设置有与第一传火通道24连通的第一组火孔11及与第二传火通道25连通的第二组火孔14，第一组火孔11及第二组火孔14能够使引出的燃气从内环火盖的顶部喷出，在上盖1的顶部形成内外分布的两层火焰。由于第一组火孔11与第二组火孔14相互隔开，两层火焰之间形成燃烧空间，燃烧空间的空气能够及时补充至内层燃气，使内层燃气充分燃烧，避免燃烧不充分的现象，增加燃气灶的燃热效率。
参照图3，上盖1上还开设有多个排成至少一排和/或列的第一传火孔13，第一传火孔13位于第一组火孔11与第二组火孔14之间，以将由第二组火孔14引射的外层火焰引向第一组火孔11，具体引向内层燃气喷出的位置。本实施例中，多个第一传火孔13可以布置成一排或者数排，和/或布置成一列或者若干列。布置成多排和/或多列的第一传火孔13可以交错设置。可以理解的是，第一传火孔13可以设置为狭长的传火槽，以将外层火焰引至内层燃气。
参照图2，火盖本体2的第二围壁22与第一围壁21之间开设有热电偶稳焰槽26，第一围壁21的对应热电偶稳焰槽26的位置开设有第二传火孔212，第二传火孔212与热电偶稳焰槽26连通，以保证内环火盖处于最小火状态时，火焰能够烧到热电偶，使得使热电偶持续产生电动势以控制开关中的电磁阀处于打开状态，从而避免熄火的问题。
在本实施例中，上盖1的厚度为0.6-2mm，上盖1上的每个火孔的孔径为0.4-1.6mm。上盖1的厚度较薄，方便冲孔。优选地，上盖1的厚度为1mm。每个火孔的孔径为0.4-1.6mm，并采用激光冲孔，以提高冲孔的精度。优选地，每个火孔的孔径为1mm。
参照图1，在本实施例中，为了方便上盖1与火盖本体2的配合，第一围壁21的顶部边缘向内凹陷以形成环形扣台211，当上盖1盖合火盖本体2的顶部时，上盖1的侧壁12与环形扣台211配合，即上盖1的侧壁12盖合于环形扣台211上。本实施例中，还可以对上盖1的侧壁12进行延伸，并在延伸的部分设置定位孔或者定位柱，并在第一围壁21上设置对应的定位柱或者定位孔，以实现上盖1与火盖本体2的配合。除此之外，上盖1的侧壁12及第一围壁21可以分别设有径向向外延伸的延伸部，延伸部相互对应并设置有通 孔或螺孔，以实现上盖1与火盖本体2的螺纹固定连接。
根据本实施例的内环火盖，第一组火孔及第二组火孔能够使引出的燃气从内环火盖的顶部喷出，在上盖的顶部形成彼此间隔开的内外两层火焰，并且两层火焰之间形成燃烧空间，燃烧空间的空气能够及时补充至内层火焰中，使内层火焰充分燃烧，避免燃烧不充分的现象，提高燃气的燃烧效率，进而增加燃气灶的燃热效率。
实施例2
参照图4至图6，本实施例中，内环火盖包括火盖本体2及用于盖合火盖本体2的上盖1，上盖1形成为片状。火盖本体2包括顶壁和自顶壁周缘向下延伸的第一围壁21，顶壁中部开设有通孔200，第一围壁21内设有第二围壁22。第二围壁22所围成的空间与通孔200连通，构成第一传火通道24，第一围壁21与第二围壁22围成的空间构成第二传火通道25。
上盖1顶壁开设有第一组火孔11，第一组火孔11分别沿轴向(即沿上盖1顶壁的厚度方向)贯通上盖1顶壁。当上盖1盖合火盖本体2的顶部时，第一组火孔11与第一传火通道24连通。
火盖本体2的第一围壁21上开设有第二组火孔213，第二组火孔213与第二传火通道25连通，且第二组火孔213从第一围壁21的内表面倾斜向上地延伸至第一围壁21的外表面。由此，内环火盖在内环喷出金属薄片火，内环火盖在中环喷出大气燃烧火，并且外环火盖在外环喷出大气燃烧火。
本实施例中，内环火盖包括顶壁和第一围壁21，第一围壁21自顶壁的周缘向下延伸形成。可以理解的是，顶壁可以为多种形状，例如圆形或者多边形等等，相应形成的第一围壁21也可以为多种形状，而不应当限于图中所示。第二围壁22可以与第一围壁21同轴设置，沿通孔200的周缘布置，并且也可以构造为多种形状。
本实施例中，从第一围壁21的内表面倾斜向上地延伸至第一围壁21的外表面的第二组火孔213兼具增加燃气灶喷火面积及聚热的功能，并且配合第一组火孔11，能够具有较佳的加热面积，同时能够提高燃气灶的燃热效率。
为了方便上盖1与火盖本体2的配合，火盖本体2的顶部设有凸台210，上盖1的侧壁12盖合于凸台210上。在本实施例中，还可以对上盖1的侧壁12进行延伸，并在延伸的部分设置定位孔或者定位柱，并在凸台210上设置对应的定位柱或者定位孔，以实现上盖1与火盖本体2的配合。除此之外，上盖1的侧壁12还可以设有径向向外延伸的延伸 部，并在延伸部及上盖1顶壁的对应部分上设置通孔或螺孔，以实现上盖1与火盖本体2的螺纹固定连接。火盖本体2的顶壁设有径向向外延伸的保护伞214，该保护伞214用以遮挡点火针，延长点火针的使用寿命。
本实施例中，内环火盖还可以包括与实施例1相同的其它结构，此处不再详细描述。
根据本实施例的内环火盖，火盖本体的侧壁开设有倾斜向上延伸的第二组火孔，能够增大喷火面积，同时有利于聚热，并且上盖设有第一组火孔，第一组火孔和第二组火孔配合，进一步增大燃气灶喷火面积，提高燃气灶的燃热效率。
实施例3
参照图7至图13所示，在本实施例中，该内环火盖包括火盖本体1`、中心火盖2`以及限位件3`。其中，火盖本体1`包括顶壁10`和自顶壁10`周缘向下延伸的第一围壁11`。顶壁10`中部开设有通孔100`。在第一围壁11`内设有第二围壁12`，该第二围壁12`所围成的空间与通孔100`连通，构成第一传火通道13`。第一围壁11`与第二围壁12`所围成的空间构成第二传火通道14`。中心火盖2`开设有第一组火孔21`，第一组火孔21`在中心火盖2`的顶壁与底壁之间轴向延伸。当中心火盖2`被安装在第一传火通道13`内时，第一组火孔21`与通孔100`连通。第二围壁12`的内表面上设有用以止挡中心火盖2`的止挡部120`，中心火盖2`被安装至止挡部120`与限位件3`之间后，限位件3`的凸出于第二围壁12`内表面的部分抵接中心火盖2`，以将中心火盖2`限位。
本实施例中，火盖本体1`包括顶壁10`和第一围壁11`，第一围壁11`自顶壁10`的周缘向下延伸形成。可以理解的是，顶壁10`可以为多种形状，例如圆形或者多边形等等，相应形成的第一围壁11`也可以为多种形状，而不应当限于图中所示。第二围壁12`可以与第一围壁11`同轴设置，并沿通孔100`的周缘设置，同样可以构造为多种形状。
本实施例中，中心火盖2`可与第二围壁12`间隙配合，装配时将中心火盖2`塞入至第二围壁12`所围成的空间，然后通过止挡部120`和限位件3`对其进行限位。在需要拆卸中心火盖2`时，只需将限位件3`从第二围壁12`中取下，此时中心火盖2`即可掉出第一传火通道13`。
在本实施例中，内环火盖包括火盖本体1`、嵌入火盖本体1`内的中心火盖2`以及将中心火盖2`限位于火盖本体1`内的限位件3`，从而便于内环火盖的拆装。嵌入火盖本体1`的中心火盖2`上设有第一组火孔21`，火焰可穿过第一组火孔21`，然后由通孔100`喷出。中心火盖2`嵌入火盖本体1`后，燃气在第一传火通道13`内发生完全预混燃烧，产生红外 火，进而具有火焰温度高、延展性好等优点。
本实施例中，限位件3`可以构造为多种形状，用于容置限位件3`的结构可以是环形卡槽121`。除环形卡槽121`外，还可以在第二围壁12`的内表面上设置多个凹陷以容置限位件3`。此种情况下，限位件3`也相应地为多个，其形状与凹陷适配，以便限位件3`可被容置在该凹陷内，进而通过多个限位件3`支撑中心火盖2`。可选地，限位件3`也可以构造为环形。
本实施例中，为了提高燃烧效率，还可在第一围壁11`上开设火孔。参见图11所示，火盖本体1`的第一围壁11`上开设有第二组火孔111`，第二组火孔111`贯穿第一围壁11`。在本实施例中，第二组火孔111`可以布置为一排，且沿第一围壁11`的周向分布，也可以布置为多排，各排交错设置。在本实施例中，火盖本体1`同时具有第一组火孔21`(用于形成红外火并实现全预混式燃烧)及第二组火孔111`(用于实现大气式燃烧)，能够实现全预混式燃烧器和大气式燃烧器的组合，使得具有该火盖本体1`的燃烧器的火焰均匀，火力猛烈，负荷调节比更大，而且可以降低有害气体排放量，提高燃烧器的热效率和环保性能。
参见图11所示，为了解决燃气灶调节到最小火时易熄灭的问题，第一围壁11`与第二围壁12`之间设置热电偶稳焰槽15`，并且第一围壁11`的对应热电偶稳焰槽15`的位置开设有传火孔151`，以保证火盖本体1`处于最小火状态时，火焰能够烧到热电偶，使热电偶持续产生电动势以控制开关中的电磁阀处于打开状态，避免熄火的问题。
参照图9和图10，在本实施例中，火盖本体1`的第二围壁12`内表面开设有用于容置限位件3`的环形卡槽121`，限位件3`构造为卡环310`。该卡环310`可收纳于环形卡槽121`中，并且卡环310`部分向内凹陷，以抵接中心火盖2`的底部。
参照图13，在本实施例中，卡环310`为开口环，包括两弯折的手持段312`及内凹的中段311`。同时捏紧两手持段312`，卡环310`发生形变而使其内径缩小，此时，卡环310`可以装配至环形卡槽121`内或者从环形卡槽121`内脱离。当卡环310`装配至环形卡槽121`内时，内凹的中段311`会抵接中心火盖2`的底部，与止挡部120`以及火盖本体1`的第二围壁12`一起限位中心火盖2`。当卡环310`从卡槽121`内取出时，作用于中心火盖2`底部的抵接力消失，由此将中心火盖2`与火盖本体1`的拆分。应当说明的是，卡环310`的形状并不限于圆环形，还可以是开口的三角形或四边形或者其他形状，只要保证卡环310`在多个位置(例如两个或两个以上)与环形卡槽121`接触以对中心火盖2`限位固定即可。
在本实施例中，卡环310`的材质可以为弹性钢，卡环310`的直径范围为0.6-1.5cm。该 卡环310`具有较佳的弹性，有利于施力与限位，以便于中心火盖2`的拆卸和装配。优选地，卡环310`的外径可为0.6cm、1.2cm和1.5cm。应该指出，除上述外径尺寸外，还可以根据需要灵活设计其他尺寸。
在本实施例中，中心火盖2`的材质可以为陶瓷，中心火盖2`上的第一组火孔21`的孔深为8-15mm。优选地，第一组火孔21`的孔深为8mm、10mm及15mm。由于第一组火孔21`的深度较长，中心火盖2`上的第一组火孔21`分成多个独立的燃气孔，可以避免火焰干涉。限位件3`可以构造为卡环310`或卡勾等，该限位件3`与火盖本体1`的环形卡槽配合。除环形卡槽外，火盖本体1`的第二围壁12`也可设有适于与卡环310`配合的凸块或挡边，以对卡环310`进行限位。该中心火盖2`的顶部抵接于火盖本体1`的止挡部120`，而限位件3`抵接火盖本体1`的底部或侧壁，进而得到较佳的卡固效果。另外，该火盖本体1`的第二围壁12`设有轴向延伸的定位柱17`，定位柱17`适于固定在燃烧器本体的定位孔内，以将内环火盖与燃烧器本体固定。火盖本体1`设有径向延伸的保护伞16`，该保护伞16`用以遮挡点火针。
图12示出了中心火盖2`的具体结构。参照图12所示，本实施例中，中心火盖2`的顶壁上设置有凸台22`，凸台22`伸出火盖本体1`的顶壁，并与火盖本体1`之间存在高度差。由于中心火盖2`上的第一组火孔21`的孔径较小，落到凸台22`顶部上的液体(例如汤汁)会流到较低位置的火盖本体1`，进而避免汤汁流入并堵塞中心火盖2`上的第一组火孔21`。优选地，凸台22`的顶面构造为圆弧面，该圆弧面有利于将流到凸台22`顶部上的汤汁导引至火盖本体1`，该火盖本体1`的顶面可以构造为平面，或者也可构造为圆弧面。可选地，凸台22`的顶面与火盖本体1`的顶面齐平，以提高装配的一致性，并提供较佳的视觉效果。
继续参照图12，在本实施例中，凸台22`包括多个彼此隔开设置的凸起部221`以及位于相邻凸起部221`之间的凹陷部222`，第一组火孔21`分别位于凸起部221`及凹陷部222`上。为了提高燃气的燃烧效率，一方面，第一组火孔21`分别形成在凸台22`的凸起部221`及凹陷部222`上，以增加燃气与空气的接触面积；另一方面，第一组火孔21`能够减小燃气的排出量，并以减少的燃气排出量提供标准的燃热，因而能够节省燃气，降低使用成本。
继续参照图12，在本实施例中，第一组火孔21`在凸起部221`上呈蜂窝状分布。蜂窝状的第一组火孔21`的表面积增大，进而增加中心火盖2`的聚热效果。
参照图14-图16，本发明实施例还提出一种燃气灶，该燃气灶包括一个或者两个燃烧器，单独的一个燃烧器包括燃烧器本体4``及安装于燃烧器本体4``上的分气盘3``、外环火 盖2``及内环火盖1``。内环火盖1``设置在外环火盖2``内，即外环火盖2``围绕内环火盖1``设置，该内环火盖1``的具体结构参照上述实施例。由于根据本发明实施例的燃气灶可采用上述实施例中的部分或全部技术方案，因此可具有上述实施例中的技术方案所带来的部分或全部有益效果，在此不再一一赘述。在本实施例中，燃气灶包括面板5``、底壳6``以及容纳于面板5``和底壳6``所围成的空间内的两个燃烧器，如图16所示。
图14示出了根据本发明一实施例的燃烧器的爆炸图，其中内环火盖1``构造为上述实施例1中的内环火盖。图15示出了根据本发明另一实施例的燃烧器的示意图，其中内环火盖1``构造为上述实施例3中的内环火盖。
当内环火盖1``构造为上述实施例3中的内环火盖时，燃烧器也可以仅包括内环火盖本体1``和与之匹配的燃烧器本体4``，而不包括外环火盖本体2``和分气盘3``，实现大气式燃烧与全预混燃烧两环火燃烧器。
在根据本发明实施例的燃烧器中，内环火盖1``具有第一传火通道和第二传火通道，外环火盖2``具有第三传火通道，因此该燃烧器可以设置有与第一传火通道连通的内环通道、与第二传火通道连通的中环通道以及与第三传火通道连通的外环通道。该内环通道、中环通道及外环通道分别对应连接有三个引射管41``，由此实现三通道独立燃烧引射，进而提高燃气灶的通气量。三个引射管41``均采用文丘里原理设计，能够加速燃气导出的速率。对内环火盖1``的第一组火孔、第二组火孔及外环火盖2``的另一组火孔，采用三级助燃技术，使燃气燃烧得更充分，提高燃气的燃烧效率。另外，整个燃气灶在喷嘴、引射管口及分气盘上分别采用引射助燃以及三级空气引射助燃技术，提高燃气的燃烧效率，节省燃气成本，进而提高整个产品的品质。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (18)

  1. 一种内环火盖，其特征在于，所述内环火盖内形成有两个或两个以上传火通道，并以有利于燃气燃烧的方式设有两组或两组以上火孔，所述两组或两组以上火孔分别与所述两个或两个以上传火通道一一对应地连通。
  2. 如权利要求1所述的内环火盖，包括火盖本体和用于盖合所述火盖本体的上盖，所述上盖构造为片状，且所述多个传火通道分别设置在所述火盖本体内。
  3. 如权利要求2所述的内环火盖，其特征在于，所述火盖本体包括第一围壁、位于所述第一围壁内的第二围壁以及连接所述第一围壁与第二围壁的至少一个连接筋，所述第二围壁所围成的空间构成第一传火通道，所述第一围壁与所述第二围壁围成的空间构成第二传火通道；
    所述多组火孔分别形成在所述上盖的顶壁上且包括第一组火孔及第二组火孔，所述第二组火孔位于所述第一组火孔的外周侧；
    当所述上盖盖合所述火盖本体的顶部时，所述第一组火孔与所述第一传火通道连通，所述第二组火孔与所述第二传火通道连通。
  4. 如权利要求3所述的内环火盖，其特征在于，所述上盖上还设有多个排成至少一排和/或列的第一传火孔，所述多个第一传火孔位于所述第一组火孔与所述第二组火孔之间，以将由所述第二组火孔引射的外层火焰引向所述第一组火孔。
  5. 如权利要求3所述的内环火盖，其特征在于，所述火盖本体的第二围壁与第一围壁之间设有热电偶稳焰槽，所述第一围壁上设有与所述热电偶稳焰槽连通的第二传火孔。
  6. 如权利要求2所述的内环火盖，其特征在于，所述上盖的厚度为0.6-2mm，每个火孔的孔径为0.4-1.6mm。
  7. 如权利要求3所述的内环火盖，其特征在于，所述第一围壁的顶部边缘向内凹陷形成环形扣台，当所述上盖盖合所述火盖本体的顶部时，所述上盖的侧壁与所述环形扣台配合。
  8. 根据权利要求2所述的内环火盖，其特征在于，所述火盖本体包括顶壁和自顶壁周缘向下延伸的第一围壁，所述顶壁中部开设有通孔；在所述第一围壁内设有第二围壁，所述第二围壁所围成的空间与所述通孔连通，构成第一传火通道；所述第一围壁与所述第二围壁围成的空间构成第二传火通道；
    所述上盖顶壁设有第一组火孔，当所述上盖盖合所述火盖本体的顶部时，所述第一组火孔与所述第一传火通道连通；
    所述火盖本体的第一围壁上设有第二组火孔，所述第二组火孔与所述第二传火通道连通，且所述第二组火孔从所述第一围壁的内表面倾斜向上地延伸至所述第一围壁的外表面。
  9. 根据权利要求1所述的内环火盖，包括火盖本体，设在所述火盖本体内的中心火盖，以及用于限位所述中心火盖的限位件，
    所述火盖本体包括顶壁和自顶壁周缘向下延伸的第一围壁，所述顶壁中部设有通孔；在所述第一围壁内设有第二围壁，所述第二围壁所围成的空间与所述通孔连通，构成第一传火通道；所述第一围壁与所述第二围壁围成的空间构成第二传火通道；
    所述中心火盖设有第一组火孔，所述第一组火孔在所述中心火盖的顶壁与底壁之间轴向延伸，当所述中心火盖被安装在所述第一传火通道内时，所述第一组火孔与所述通孔连通；
    所述第二围壁的内壁上设有用以止挡所述中心火盖的止挡部，所述中心火盖被安装在所述止挡部与所述限位件之间后，所述限位件的凸出于所述第二围壁内表面的部分抵接所述中心火盖，以将所述中心火盖限位。
  10. 如权利要求9所述的内环火盖，其特征在于，所述第一围壁上设有交错分布的第二组火孔，所述第二组火孔贯穿所述第一围壁，并与所述第二传火通道连通。
  11. 如权利要求9所述的内环火盖，其特征在于，所述第二围壁与所述第一围壁之间设有热电偶稳焰槽，所述第一围壁上设有与所述热电偶稳焰槽连通的传火孔。
  12. 如权利要求9所述的内环火盖，其特征在于，所述中心火盖的顶壁上设置有凸台，所述凸台伸出所述火盖本体的顶壁，或
    所述凸台的顶面与所述火盖本体的顶面齐平。
  13. 如权利要求12所述的内环火盖，其特征在于，所述凸台包括多个间隔开设置的凸起部以及位于相邻所述凸起部之间的凹陷部，所述第一组火孔分别位于所述凸起部及所述凹陷部上。
  14. 如权利要求13所述的内环火盖，其特征在于，所述第一组火孔呈蜂窝状分布在所述凸起部上。
  15. 如权利要求9至14中任一项所述的内环火盖，其特征在于，所述中心火盖由陶瓷制成。
  16. 如权利要求9所述的内环火盖，其特征在于，所述火盖本体的第二围壁的内表面设有用于容置所述限位件的环形卡槽，所述限位件构造为卡环。
  17. 如权利要求16所述的内环火盖，其特征在于，所述卡环为开口环，所述卡环的两端向内弯折以形成手持段，所述卡环的中段向内凹陷以凸出于所述第二围壁的内表面。
  18. 一种燃气灶，包括一个或者两个燃烧器，所述燃烧器包括燃烧器本体及安装于燃烧器本体上的外环火盖及内环火盖，所述外环火盖具有第三传火通道，所述内环火盖设置在所述外环火盖内，其特征在于，所述内环火盖为根据权利要求1至17中任一项所述的内环火盖。
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