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CN-122015088-A - Single-cavity double-fire-ring furnace end

CN122015088ACN 122015088 ACN122015088 ACN 122015088ACN-122015088-A

Abstract

The invention relates to the technical field of combustors and discloses a single-cavity double-fire-ring stove head which comprises a base, wherein the base comprises a barrel, a cavity with an opening at the lower end is arranged in the barrel, a positioning cover is arranged at the upper end of the cavity, a detection needle and an ignition needle are arranged on the positioning cover, the combustor comprises a fire cover, a bottom plate is arranged at the lower end cover of the fire cover, a premixing cavity is formed between the fire cover and the bottom plate, a through hole is formed in the center of the fire cover, an extending plate extending inwards is arranged on the inner wall of the through hole, the positioning cover is used for positioning and supporting the extending plate, a gap is formed between the bottom plate and the base, compared with a traditional double-cavity double-air-channel structure, the number of parts is reduced, the volume is reduced, the difficulty in processing and assembling and the production cost are reduced, the fire cover is placed stably, the positioning precision is improved, the deviation is avoided, the flame distribution is ensured to be uniform, a large amount of heat of the detection needle and the ignition needle is prevented from being transmitted downwards, the heat accumulation is further stopped, the aging is effectively delayed, and the service life is prolonged.

Inventors

  • LI JINGSHI
  • ZHU ZHANGPING
  • LI WENQING
  • YANG LINLIN

Assignees

  • 佛山市宇煜五金有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (9)

  1. 1. A single chamber double firering burner, comprising: the base (1), base (1) includes barrel (10), be provided with cavity (14) that the lower extreme is the opening in barrel (10), cavity (14) upper end locating cover is equipped with locating cover (17), install detection needle (172) and ignition needle (173) on locating cover (17); the burner (2) comprises a fire cover (20), wherein a bottom plate (201) is arranged on the lower end cover of the fire cover (20), and a premixing cavity (202) is formed between the fire cover (20) and the bottom plate (201); The center of fire lid (20) has seted up through-hole (26), the inner wall of through-hole (26) is provided with extension board (27) that inboard extends, extension board (27) are corresponding with location lid (17), location lid (17) are used for location and support extension board (27), make form the clearance between bottom plate (201) and base (1).
  2. 2. The single-cavity double-fire-ring furnace end according to claim 1, wherein the positioning cover (17) is provided with a first positioning seat (170) and a second positioning seat (171) which are protruded, the detection needle (172) is arranged in the first positioning seat (170) in a penetrating way, the ignition needle (173) is arranged in the second positioning seat (171) in a penetrating way, and the lower ends of the detection needle (172) and the ignition needle (173) extend into the cavity (14); One side of extension board (27) is provided with and is indent first breach (28), and the opposite side is provided with and is indent second breach (29), first breach (28) erect on first positioning seat (170), second breach (29) erect on second positioning seat (171).
  3. 3. The single-cavity double-fire-ring burner according to claim 2, wherein a convex ring (21) is arranged on the fire cover (20), a plurality of outer fire holes (23) communicated with the premixing cavity (202) are arranged on the outer side of the convex ring (21), a plurality of inner fire holes (25) communicated with the premixing cavity (202) are arranged on the inner side of the convex ring (21), and the input end of the inner fire holes (25) is lower than the input end of the outer fire holes (23).
  4. 4. The single-cavity double-fire-ring furnace end according to claim 2, wherein the first positioning seat (170) is square and columnar, the first notch (28) is a square hole, a first step (280) is arranged on the lower end face of the first notch (28), the first step (280) is supported on the upper end face of the first positioning seat (170), the second positioning seat (171) is columnar, the second notch (29) is a circular hole, a second step (290) is arranged on the lower end face of the second notch (29), and the second step (290) is supported on the second positioning seat (171).
  5. 5. The single-cavity double-fire-ring furnace end according to claim 2, wherein a connecting plate (11) is arranged on one side of the outer wall of the cylinder body (10), a gas connecting seat (12) is arranged at the lower end of the connecting plate (11), a nozzle seat (13) communicated with the gas connecting seat (12) is arranged at the upper end of the connecting plate (11), and a salient point (130) for supporting a bottom plate (201) is arranged on the upper end face of the nozzle seat (13).
  6. 6. The single-cavity double-fire-ring furnace end according to claim 5, wherein clamping grooves (15) are formed in two sides of the upper end of the cylinder body (10), first fixing lugs (16) are arranged in the clamping grooves (15), second fixing lugs (18) are arranged on two sides of the positioning cover (17), the second fixing lugs (18) are embedded and installed in the clamping grooves (15), and corresponding connecting holes are formed in the first fixing lugs (16) and the second fixing lugs (18).
  7. 7. A single-cavity double-fire-ring burner according to claim 3, characterized in that a first inclined plane (22) is arranged on the outer side of the convex ring (21), a second inclined plane (24) is arranged on the inner side of the convex ring (21), a plurality of outer fire holes (23) are formed in the first inclined plane (22), and a plurality of inner fire holes (25) are formed in the second inclined plane (24).
  8. 8. The single-cavity double-fire-ring burner according to claim 7, wherein the angle range of the section line of the first inclined surface (22) and the bottom plate (201) is 50-65 degrees, the angle range of the section line of the second inclined surface (24) and the bottom plate (201) is 25-35 degrees, so that a pressurizing area is formed between the first inclined surface (22) and the second inclined surface (24), a premixing area is arranged below the pressurizing area, the width of the premixing area is larger than that of the pressurizing area, and the premixing area and the pressurizing area form the premixing cavity (202).
  9. 9. The single-cavity double-fire-ring burner according to claim 5, wherein the fire cover (20) and the bottom plate (201) are made of stainless steel, an air guide groove (202) is formed on the bottom plate (201) in a punching mode, the lower end of the air guide groove (202) protrudes relative to the lower end face of the bottom plate (201), and an air inlet (203) is formed in the air guide groove (202) towards one end of the nozzle seat (13).

Description

Single-cavity double-fire-ring furnace end Technical Field The invention relates to the technical field of burners, in particular to a single-cavity double-fire-ring furnace end. Background At present, an upper air inlet burner is commonly adopted in a household gas cooker, and most of the traditional double-fire-ring burner adopts a double-cavity, double-air-channel or multi-channel structure, so that the problems of large number of parts, large volume, high requirements on processing and assembling precision, high production cost and the like exist. In addition, in the above-mentioned traditional combustor structure, the ignition needle is installed in central point (and the single ring combustor is installed in the fire lid outside) with detecting needle, because the furnace end central point keeps holding only the through-hole that holds ignition needle and detecting needle and pass, even if the center has secondary air to supplement the hole, but the air current can not direct contact with ignition needle and detecting needle, under the condition of using the burning for a long time, the temperature transfer of ignition needle and detecting needle to the root, because of can not dispel the heat and lead to high temperature ageing damage, cause ignition difficulty, flameout protection failure, life is short. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a single-cavity double-fire-ring furnace end so as to solve the problems in the prior art. The technical scheme adopted by the invention for solving the technical problems is that the single-cavity double-fire-ring furnace end comprises: The base comprises a barrel, a cavity with an opening at the lower end is arranged in the barrel, a positioning cover is arranged on the upper end of the cavity, and a detection needle and an ignition needle are arranged on the positioning cover; the burner comprises a fire cover, wherein a bottom plate is arranged on the lower end cover of the fire cover, and a premixing cavity is formed between the fire cover and the bottom plate; The center of the fire cover is provided with a through hole, the inner wall of the through hole is provided with an extension plate extending inwards, the extension plate corresponds to the positioning cover, and the positioning cover is used for positioning and supporting the extension plate, so that a gap is formed between the bottom plate and the base. After the structure is realized, adopt single chamber structure to realize two fire ring burning, replace traditional two chambeies, two air flue structures, reduce spare part quantity, reduce the volume, reduce processing and assembly degree of difficulty and manufacturing cost, the extension board through the center supports by the locating cover in addition, make the fire lid place steadily, improve positioning accuracy, avoid the skew, rotate, guarantee that flame distributes evenly, form the premix chamber between fire lid and the bottom plate, be favorable to gas and air intensive mixing, promote combustion stability, simultaneously, the integrated installation of locating cover detects needle and ignition needle, because the extension board extends to the center at the inner wall of through-hole and forms, make clearance and through-hole intercommunication, thereby make the through-hole can hold the air current and supply through carrying out secondary air, the air current can be direct with detecting needle and ignition needle contact simultaneously, prevent a large amount of heat down transfer of detection needle and ignition needle, the cavity lower extreme is the opening, further stop heat accumulation, effectively delay ageing, improve life. In the single-cavity double-fire-ring furnace end, the positioning cover is provided with the first positioning seat and the second positioning seat which are protruded, the detection needle is arranged in the first positioning seat in a penetrating manner, the ignition needle is arranged in the second positioning seat in a penetrating manner, and the lower ends of the detection needle and the ignition needle extend into the cavity; one side of the extension plate is provided with a first notch which is concave, the other side of the extension plate is provided with a second notch which is concave, the first notch is erected on the first positioning seat, and the second notch is erected on the second positioning seat. After the structure is realized, the first notch and the second notch are concave, so that the first notch and the second notch are opened towards the center of the through hole, secondary air is supplemented in the center of the fire cover, central air flow is realized, the detection needle and the ignition needle can be subjected to passive heat dissipation, and meanwhile, the first positioning seat and the second positioning seat are subjected to passive heat dissipation, so that high-temperature aging caused by heat accumu