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CN-224229996-U - Premixing furnace end and gas stove

CN224229996UCN 224229996 UCN224229996 UCN 224229996UCN-224229996-U

Abstract

The utility model discloses a premixing furnace end and a gas stove, which comprises a furnace shell main body, a furnace shell core seat and a furnace core, wherein a premixing cavity is formed by encircling the furnace shell main body, the furnace shell core seat and the furnace core, a premixing piece is arranged in the premixing cavity, the premixing cavity is divided into an upper premixing cavity and a lower premixing cavity which are distributed up and down, the furnace core is provided with an air outlet communicated with the upper premixing cavity, the furnace shell main body is provided with an air inlet communicated with the lower premixing cavity, the bottom of the upper premixing cavity forms a ventilation space, a plurality of air guide channels are arranged on the premixing piece at intervals around the axis of the premixing piece in the circumferential direction, air inlets of the air guide channels are arranged at the bottom of the air guide channels and are communicated with the lower premixing cavity, the bottom of the air guide channels are communicated with the lower premixing cavity, the ventilation space is arranged at the radial outer side of the air guide channels, and air outlets of the air guide channels face the ventilation space and are communicated with the ventilation space. The utility model aims to provide a premixing furnace end which has the effects of strengthening mixing effect, simple structure and low cost.

Inventors

  • JU MUCHUN
  • CAI GUOQING

Assignees

  • 浙江博立灶具科技有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (10)

  1. 1. The utility model provides a premix furnace end, includes stove outer covering main part, stove outer covering core seat and stove core, stove outer covering core seat locates the stove outer covering main part inside, and the stove core is installed in stove outer covering core seat top, encloses into the premix chamber between stove outer covering main part, stove outer covering core seat and the stove core, characterized by, install the premix in the premix chamber, the premix is cut apart into the upper premix chamber and the lower premix chamber of upper and lower distribution with the premix chamber, the stove outer covering main part is equipped with the gas outlet that communicates with the upper premix chamber, the stove outer covering main part is equipped with the gas inlet that communicates with the lower premix chamber, the bottom of upper premix chamber forms the ventilation space, be equipped with a plurality of wind-guiding passageway that sets up around the axis circumference interval of premix on the premix, wind-guiding passageway's air intake is located wind-guiding passageway bottom and is communicates with the lower premix chamber, wind-guiding passageway bottom and with the lower premix chamber intercommunication, the radial outside of wind-guiding passageway is located to the ventilation space, wind-guiding passageway's air outlet orientation ventilation space and with ventilation space intercommunication.
  2. 2. A premix burner as in claim 1, wherein the at least one air guide channel is arranged in radial deflection relative to the premix chamber such that the mixture entering the upper premix chamber through the air outlet of the air guide channel rotates counter-clockwise about the axis of the premix chamber.
  3. 3. A premix burner as in claim 2, wherein all of the air guide passages are deflected in the same radial direction relative to the premix chamber.
  4. 4. The premix burner of claim 1, wherein the premix member comprises an upper sealing plate and a plurality of air guide plates connected below the upper sealing plate, the plurality of air guide plates are circumferentially spaced around the axis of the premix member, and the air guide channel is formed between two adjacent air guide plates.
  5. 5. The burner of claim 4, wherein the premixing member further comprises a lower sealing plate having a ring-shaped structure and disposed outside the air guiding pieces and the air inlet of the air guiding channel, the plurality of air guiding pieces being connected to the lower sealing plate, the air outlet of the air guiding channel being disposed between the upper sealing plate and the lower sealing plate, the lower sealing plate being connected to the main body of the furnace casing.
  6. 6. The burner of claim 5, wherein the lower portion of the premix chamber is provided with an inwardly projecting support step that supports the lower seal plate.
  7. 7. The burner of claim 4, wherein the upper sealing plate comprises an upper sealing plate body above the air guide channel and an inner sealing plate inside the air guide channel, the inner sealing plate is arranged inside the plurality of air guide plates and connected with the air guide plates, and the upper end of the inner sealing plate is connected with the upper sealing plate body.
  8. 8. A premix burner as in any of claims 1-7, wherein the premix is of an integrally cast construction.
  9. 9. The premixed burner of any one of claims 1 to 7, further comprising an ignition induction needle assembly and a fire pressing cover, wherein the fire pressing cover is arranged above the burner core, a plurality of fire outlet holes are formed in the fire pressing cover, a first through hole extending vertically is formed in the center of the burner shell core seat, a second through hole extending vertically is formed in the burner core, the ignition induction needle assembly penetrates through the first through hole and the second through hole, the upper portion of the ignition induction needle assembly is exposed out of the second through hole, the fire pressing cover is of an annular flaring structure with a large upper portion and a small lower portion, an annular fire outlet cavity with a large upper portion is formed between the outer side wall of the fire pressing cover and the inner wall of the burner shell main body, the fire outlet holes are formed in the side wall of the fire pressing cover, the diameters of the fire outlet holes decrease from bottom to top, and the air outlet is formed in the top of the burner core and communicated with the annular fire outlet cavity.
  10. 10. A gas burner, characterized in that it is provided with a premix burner according to any one of claims 1 to 9.

Description

Premixing furnace end and gas stove Technical Field The utility model relates to the technical field of gas stoves, in particular to a premixing stove head. Background The premixed burner is a burner part specially designed for efficient combustion, and the working principle is that fuel gas and air are mixed in a specific proportion in advance and then sprayed out for combustion. The core structure of the furnace end covers key components such as a furnace shell main body, a furnace shell core seat, a furnace core and the like. In operation, the gas and air first enter the premix chamber through the gas inlet, where they are mixed either by simple diffusion or by a preliminary flow-guiding mechanism. Then, the mixed gas is sprayed out through the gas outlet of the furnace core to carry out combustion reaction. The premixing technology has the core advantages that by pre-mixing the fuel gas and the air, the combustion efficiency can be obviously improved theoretically, and the emission of pollutants can be effectively reduced. However, most of the currently widely used premixed burners employ a single stage premix chamber design, i.e. the mixing of the gas and air is accomplished in a relatively single chamber. This design limits the diversity of mixing paths and the residence time of the mixed gas in the chamber is relatively short, making it difficult to meet the requirements for complete mixing. Thus, despite the adoption of the premixing technique, in the actual combustion process, the combustion efficiency of the fuel gas is still greatly different from the theoretical maximum value. Disclosure of utility model The utility model aims to provide a premixing furnace end, which solves the problem that the premixing of fuel gas and air in the premixing furnace end is not uniform enough and has the advantages of simple structure and low cost. In order to achieve the aim, the premixing furnace head adopts the following technical scheme that the premixing furnace head comprises a furnace shell main body, a furnace shell core seat and a furnace core, wherein the furnace shell core seat is arranged in the furnace shell main body, the furnace core is arranged above the furnace shell core seat, a premixing cavity is formed by surrounding the furnace shell main body, the furnace shell core seat and the furnace core, a premixing piece is arranged in the premixing cavity, the premixing cavity is divided into an upper premixing cavity and a lower premixing cavity which are distributed up and down by the premixing piece, the furnace core is provided with an air outlet communicated with the upper premixing cavity, the furnace shell main body is provided with an air inlet communicated with the lower premixing cavity, the bottom of the upper premixing cavity forms a ventilation space, a plurality of air guide channels which are circumferentially arranged around the axis of the premixing piece at intervals are arranged on the premixing piece, air inlets of the air guide channels are arranged at the bottom of the air guide channels and are communicated with the lower premixing cavity, the bottom of the air guide channels are communicated with the lower premixing cavity, and the ventilation space is arranged at the radial outer side of the air guide channels, and the air outlets of the air guide channels face the ventilation space and are communicated with the ventilation space. After the technical scheme is adopted, the premixing furnace head has the advantage that the premixing furnace head forms a premixing cavity for premixing fuel gas and air through the furnace shell main body, the furnace shell core seat and the furnace core. Through set up a premix in the premix chamber, separate the premix chamber into upper premix chamber and lower premix chamber that distributes from top to bottom, the stove outer covering main part is equipped with the gas inlet that communicates with lower premix chamber, a plurality of wind-guiding passageway around its axis circumference interval has been set up on the premix, wind inlet and the lower premix chamber intercommunication of wind-guiding passageway, the air outlet communicates with the ventilation space of upper premix chamber, and the radial outside of wind-guiding passageway is located to the ventilation space, the mixed gas that blows out like this can strike at the inside wall of stove outer covering main part, blow out from the gas outlet in the axial of changeing by the premix, compared with the mixed gas in the prior art directly by the gas outlet blowout, make mixed gas directly flow to the gas outlet along the axial of premix, such air-out mode has not only made gas and air obtain increasing at the mixed route of premix intracavity, and mixing time also is prolonged correspondingly, thereby mixing efficiency has been improved, make gas and air mix more even and abundant, the combustion efficiency of gas in the follow-up combustion process also can obtain promotion. The h