CN212204510U

CN212204510U - Small-load dry burning prevention structure of gas furnace end

Info

Publication number: CN212204510U
Application number: CN202020988988.8U
Authority: CN
Inventors: 伍强; 王琳婷; 钟嘉雄; 王东; 于龙
Original assignee: Shenzhen Konka Intelligent Electric Technology Co ltd
Current assignee: Shenzhen kangjiajiapin Intelligent Electric Appliance Technology Co.,Ltd.
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-12-22
Anticipated expiration: 2030-06-02

Abstract

The utility model relates to a gas furnace end's little load prevents dry combustion method structure, including burner, burner is including dividing the fire base and setting up in by outer loop fire lid on it to interior, middle fire lid and inner ring fire lid, be equipped with on the central point of inner ring fire lid and prevent dry combustion method probe that dry combustion method power is 350w-400w, it encircles to be equipped with interior gas mixture on the position that divides the fire base to correspond the inner ring fire lid, the bottom of dividing the fire base is connected with the inner ring that communicates with interior gas mixture ring and draws the ejector tube, the width of interior gas mixture ring is less than the internal diameter that inner ring draws the ejector tube gas outlet, be equipped with the division board that makes it form two inner ring air flues on the interior gas mixture ring, the inner ring air flue draws the ejector tube intercommunication with the inner ring respectively, the inner ring fire lid produces the combustion power decline of flame, make prevent that dry combustion method probe's trigger precision is higher can not.

Description

Small-load dry burning prevention structure of gas furnace end

Technical Field

The utility model relates to a gas furnace end's technical field specifically is a gas furnace end's small load prevents dry combustion method structure.

Background

The anti-dry burning technology can improve the safety of the gas furnace end, and is widely applied, the principle is that the boiler bottom is monitored through the anti-dry burning probe, when the temperature of the boiler bottom is overhigh, the anti-dry burning probe controls the air inlet stop valve to be closed, so that the gas supply is interrupted, and the anti-dry burning effect is achieved.

Therefore, further improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a dry combustion method structure is prevented to gas furnace end's light load, aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least.

The purpose of the utility model is realized like this:

the utility model provides a gas furnace end's little load prevents dry combustion method structure, including burner, burner includes branch fire base and sets up in from outside to inside its outer loop fire lid, middle fire lid and inner ring fire lid, be equipped with on the central point of inner ring fire lid and prevent dry combustion method probe that dry combustion method power is 350w-400w, prevent dry combustion method probe and burner device's air inlet stop valve electric connection, divide and be equipped with interior gas mixing ring on the position that fire base corresponds inner ring fire lid, the bottom of branch fire base is connected with the inner ring who draws the ejector tube with interior gas mixing ring intercommunication, the width of interior gas mixing ring is less than the inner diameter that the inner ring draws the ejector tube gas outlet, be equipped with the division board that makes it form two inner ring air flues on the interior gas mixing ring, the inner ring air flue respectively with draw the ejector tube intercommunication.

The inner diameter of the air inlet of the inner ring injection pipe is 20mm-25mm, and the inner diameter of the air outlet of the inner ring injection pipe is 10mm-15 mm.

The width of the inner gas mixing ring is 4mm-5 mm.

The top of the outer side of the inner ring fire cover is provided with an inclined plane which inclines inwards, so that the width of the top of the inner ring fire cover is smaller than that of the bottom of the inner ring fire cover.

An inner ring main air inlet is arranged at the center of the fire distribution base corresponding to the inner gas mixing ring.

And a plurality of inner ring auxiliary air inlet holes are formed in the inner side wall of the inner ring fire cover.

And energy-gathering arc surfaces which enable flame to approach to the center are arranged on the outer ring fire cover and/or the middle fire cover.

And a heat insulation ring is arranged on the outer side of the dry burning prevention probe corresponding to the top of the inner ring fire cover.

The heat insulation ring is provided with a plurality of inner ring air outlet holes communicated with the inner side and the outer side of the heat insulation ring.

The utility model has the advantages that:

through the power reduction to preventing dry combustion method probe, simultaneously, through narrowing to the width of interior gas mixing ring to and set up the division board, make the gas volume of interior gas mixing ring reduce and gas circulation speed reduces, realize that the inner ring fire lid produces the combustion power decline of flame, make prevent that the trigger precision of dry combustion method probe is higher can not break the air feed because of anaphylactic error trigger again, the design of three ring fires has compensatied the inner ring fire lid and has produced the not enough of flame power decline, the heating effect is more even.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Fig. 1 is a first cross-sectional view of an embodiment of the present invention.

Fig. 2 is a second cross-sectional view of the embodiment of the present invention.

Fig. 3 is a perspective view of an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-3, the small load anti-dry burning structure of the gas furnace end comprises a combustion device, the combustion device comprises a fire distribution base 3, an outer ring fire cover 11, a middle fire cover 12 and an inner ring fire cover 13, the outer ring fire cover 11, the middle fire cover 12 and the inner ring fire cover 13 are arranged on the fire distribution base from outside to inside, an anti-dry burning probe 2 with anti-dry burning power of 350w-400w is arranged at the central position of the inner ring fire cover 13, the anti-dry burning probe 2 is electrically connected with an air inlet stop valve (not shown in the figures) of the burner device, an inner gas mixing ring 31 is arranged at the position of the fire distribution base 3 corresponding to the inner ring fire cover 13, the bottom of the fire distribution base 3 is connected with an inner ring injection pipe 4 communicated with the inner gas mixing ring 31, the width of the inner gas mixing ring 31 is smaller than the inner diameter of an air outlet of the inner ring injection pipe 4, a partition plate 311 for forming two inner ring air passages is arranged on the inner gas mixing ring 31, meanwhile, the width of the inner gas mixing ring 31 is narrowed, and the partition plate 311 is arranged, so that the gas quantity of the inner gas mixing ring 31 is reduced, the gas circulation speed is reduced, the combustion power of flame generated by the inner ring fire cover 13 is reduced, the triggering precision of the dry burning prevention probe 2 is higher, gas supply can not be interrupted due to hypersensitive error triggering, the design of the three-ring fire makes up the defect that the flame power generated by the inner ring fire cover 13 is reduced, and the heating effect is more uniform.

Furthermore, the inner diameter of the air inlet of the inner ring injection pipe 4 is 20mm-25mm, the inner diameter of the air outlet of the inner ring injection pipe 4 is 10mm-15mm, and the flow of the fuel gas conveyed by the inner ring injection pipe 4 is reduced, so that the combustion power of flame generated by the inner ring fire cover 13 is reduced.

Further, the width of the inner air mixing ring 31 is 4mm to 5 mm.

Furthermore, the top of the outer side of the inner ring fire cover 13 is provided with an inclined plane 131 which inclines inwards, so that the width of the top of the inner ring fire cover 13 is smaller than that of the bottom of the inner ring fire cover, the volume of a cavity formed by the inner ring fire cover 13 and the inner gas mixing ring 31 is reduced, the flow rate of gas is reduced, and the combustion power of flame generated by the inner ring fire cover 13 is reduced.

Furthermore, an inner ring main air inlet 32 is arranged at the center of the fire distribution base 3 corresponding to the inner air mixing ring 31, and air enters from the inner ring main air inlet 32, so that the gas is more fully combusted.

Furthermore, a plurality of inner ring auxiliary air inlet holes 132 are formed in the inner side wall of the inner ring fire cover 13, so that air can conveniently enter the inner ring fire cover 13 to be premixed with fuel gas before combustion, and the combustion effect is improved.

Furthermore, the outer ring fire cover 11 and/or the middle fire cover 12 are/is provided with energy-gathering arc surfaces 14 which enable the flame to approach to the center, so that the heat generated by the flame is more concentrated, the energy-gathering effect is achieved, and the heating efficiency is improved.

Furthermore, the outer side of the dry-burning prevention probe 2 is provided with a heat insulation ring 5 corresponding to the top position of the inner ring fire cover 13, when a pot is placed on the dry-burning prevention probe 2, the dry-burning prevention probe 2 is accommodated on the inner side position of the heat insulation ring 5 under the action of the pot, flame can not contact with the dry-burning prevention probe 2, and the measurement precision is improved.

Furthermore, the heat insulation ring 5 is provided with a plurality of inner ring air outlet holes 51 communicated with the positions of the inner side and the outer side of the heat insulation ring, and partial air flows out from the inner ring air outlet holes 51 and participates in combustion, so that the integral combustion of the gas is more sufficient.

The above embodiments are merely preferred embodiments of the present invention, and other embodiments are also possible. Equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalent modifications or substitutions are intended to be included within the scope of the claims set forth herein.

Claims

1. A small-load dry burning prevention structure of a gas furnace end comprises a combustion device, wherein the combustion device comprises a fire distribution base (3), an outer ring fire cover (11), a middle fire cover (12) and an inner ring fire cover (13), the outer ring fire cover, the middle fire cover and the inner ring fire cover are arranged from outside to inside, the dry burning prevention structure is characterized in that a dry burning prevention probe (2) with the dry burning prevention power of 350w-400w is arranged at the central position of the inner ring fire cover (13), the dry burning prevention probe (2) is electrically connected with an air inlet stop valve of a burner device, an inner gas mixing ring (31) is arranged at the position, corresponding to the inner ring fire cover (13), of the fire distribution base (3), an inner ring injection pipe (4) communicated with the inner gas mixing ring (31) is connected to the bottom of the fire distribution base (3), the width of the inner gas mixing ring (31) is smaller than the inner diameter of an air outlet of the inner ring injection pipe (4), and a partition plate (311) for forming two inner rings is, the inner ring air passage is respectively communicated with the inner ring injection pipe (4).

2. The small load dry burning prevention structure of a gas range head of claim 1, wherein: the inner diameter of the air inlet of the inner ring injection pipe (4) is 20mm-25mm, and the inner diameter of the air outlet of the inner ring injection pipe is 10mm-15 mm.

3. The small load dry burning prevention structure of a gas range head of claim 1, wherein: the width of the inner gas mixing ring (31) is 4mm-5 mm.

4. The small load dry burning prevention structure of a gas range head of claim 1, wherein: the top of the outer side of the inner ring fire cover (13) is provided with an inclined plane (131) which inclines inwards, so that the width of the top of the inner ring fire cover (13) is smaller than that of the bottom of the inner ring fire cover.

5. The small load dry burning prevention structure of a gas range head of claim 1, wherein: an inner ring main air inlet hole (32) is arranged at the center of the fire distribution base (3) corresponding to the inner gas mixing ring (31).

6. The small load dry burning prevention structure of a gas range head of claim 1, wherein: the inner side wall of the inner ring fire cover (13) is provided with a plurality of inner ring auxiliary air inlet holes (132).

7. The small load dry burning prevention structure of a gas range head of claim 1, wherein: and energy-gathering arc surfaces (14) enabling flames to approach to the center are arranged on the outer ring fire cover (11) and/or the middle fire cover (12).

8. The small load dry burning prevention structure of a gas range head of any one of claims 1 to 7, wherein: and a heat insulation ring (5) is arranged at the position of the outer side of the dry burning prevention probe (2) corresponding to the top of the inner ring fire cover (13).

9. The small load dry burning prevention structure of a gas range head of claim 8, wherein: the heat insulation ring (5) is provided with a plurality of inner ring air outlet holes (51) which are communicated with the positions of the inner side and the outer side of the heat insulation ring.