CN201575501U - Burner of lower air intake gas cooker - Google Patents

Abstract

A burner of a lower air intake gas cooker comprises an outer ring-shaped burner (1) and an inner burner (2a), wherein an air intake cylinder (3) is connected with the lower end of the outer ring-shaped burner (1); the main body of the inner burner adopts a cylindrical structure with a small circular cross section and large longitudinal length; and the outer ring-shaped burner and the air intake cylinder form a firebox which has a small upper end opening and a large lower end opening and is penetrated from top to bottom. During fuel gas burning, as the temperature of the upper end opening of the firebox is much higher than the air temperature of the lower end opening of the firebox, the stack effect generated under the action of thermal pressure enables secondary air to be sucked from the lower end opening of the firebox and flow upward at an accelerated rate, thereby producing a draught on the secondary air; and the fire stirring effect is achieved. A burner opening of the lower air intake gas cooker is equipped with a funneled heat concentrating cylinder (7). The utility model has the advantages of sufficient oxygen supply for the secondary air, high firepower, combustion efficiency and heat utilization, and so on.

Description

A kind of burner of lower air-inlet gas cooker

(1) technical field

The utility model relates to the burner of gas-cooker, is a kind of burner that is provided with the lower air-inlet gas cooker of burner hearth.

(2) background technology

The gas kitchen ranges of energy-saving and environmental protection more and more is subject to people's attention, and the discharging of the efficiency of combustion of raising gas-cooker and heat utilization efficiency, reduction nuisance is the matter of utmost importance that gas-cooker will be considered in design.

The gas-cooker that utilizes prior art to make, can be divided into two kinds by mounting means, directly lie in desk-top gas-cooker and the embedded gas-cooker that is installed in the cabinet table top reserved opening on the cabinet table top, the design feature of these two kinds of gas-cookers is that the volume of burner is too huge, and burner all is on cabinet (or kitchen range top) table top.The gas-cooker of prior art is owing to be subjected to burner structure and the restriction of burning air intake mode, have the following disadvantages: the one, the required auxiliary air of fuel gas buring can only laterally enter the combustion zone from the periphery of burner and give oxygen supply (being usually said last air intake or side air intake), the supply mode of this auxiliary air does not meet the characteristics of motion of thermal current, make auxiliary air enter combustion centre flow in when zone have some setbacks, resistance is big, causes the auxiliary air oxygen supply not enough or inhomogeneous; The 2nd, the combustion head of burner is too little to the spacing in the bottom of a pan, makes flame meet behind scope from the bottom of a pan to the outer diffusion and increases and cause too much thermal loss and Heat-collecting effect poor; The 3rd, burner is in a free space, and periphery does not have and to block, cause firepower do not concentrate, fierce, heat utilization efficiency is low.

(3) utility model content

1, technical problem to be solved in the utility model is: the structure that changes burner, reduce the flow resistance of auxiliary air, the abundant oxygen supply of required auxiliary air when guaranteeing fuel gas buring, and the flow velocity of raising auxiliary air, flame is more fierce when making fuel gas buring.Change the supply mode of auxiliary air, the last air intake (or side air intake) that is adopted by prior art changes down air intake into.Burner be arranged on kitchen range top plane below, suitably strengthen the distance in the Burning stove hole and the bottom of a pan, allow the top of flame or the top contact the bottom of a pan, the thermal loss that flame causes to the diffusion of outer, the bottom of a pan when reducing with big fire, the heat transfer temperature difference of raising flame and heating object.

2, the technical solution adopted in the utility model is: a kind of burner with following structure is provided, comprises outer ring burner and inner burner, wherein outer shroud burner lower end is connected with the air intake tube.It is young that outer shroud burner and air intake tube are formed a upper end, lower port is big, the burner hearth of up/down perforation, when fuel gas buring, make the temperature of upper port burning gases in the burner hearth be much higher than the air themperature outside the burner hearth lower port, effect lower hearth in hot pressing produces stack effect, make auxiliary air be inhaled into upwards and flow that the pressure reduction that forms with hot pressing is motive force required auxiliary air when replenishing fuel gas buring from the burner hearth lower port.The burner hearth that outer shroud burner and air intake tube are formed plays one and bleeds, puts a chimney on the stove and make the fire draw and the effect of heat build-up.The outer ring burner body adopts vertically long structure, mist (primary air+combustion gas) can fully be mixed in the process that the annular chamber inward turning turns to and heated by the wall of cavity, chemism and physical activity during with the enhancing fuel gas buring improve efficiency of combustion.For guaranteeing that auxiliary air has a bigger flow section (reduction flow resistance) in burner hearth, it is little that the cross section of inner burner should be tried one's best.

3, the utility model compared with prior art can produce following good effect

The one, by the additional auxiliary air of the flowing law of thermal current, last air intake (or side air intake) by prior art changes down air intake into, make full use of the effect of hot pressing, for flow the from bottom to top power provide of auxiliary air can be strengthened mixing of auxiliary air and combustion gas, efficiency of combustion is improved, makes flame increase (being vigorous fire) simultaneously to upthrust.

The 2nd, because the design of the cross section of inner burner is less, make that the flow section of the interior auxiliary air of burner hearth is relatively just big, its flow resistance is little, guarantees the oxygen supply abundance of auxiliary air.

The 3rd, compared with prior art long by mist (primary air+combustion gas) time of staying in the burner cavity that induction tunnel sucks, mix fully, long, temperature rise heat time heating time of burned wall face helps combustion gas and fully burns.

The 4th, air intake tube that the outer ring burner is connected with the lower end forms a burner hearth, and this burner hearth plays and bleeds, puts a chimney on the stove and make the fire draw and the effect of heat build-up, makes stove fire more fierce.

The 5th, burner simple in structure, easy processing and fabricating, cost is low.

(4) description of drawings

Figure the-1st, (inner burner is a cylinder) of the present utility model structural representation (with the infundibulate heat gathering tube)

Figure the-2nd, (inner burner is an annular) of the present utility model structural representation

Figure the-3rd, the burner vertical view

Figure the-4th, the fire lid of burner

Figure the-5th, the infundibulate heat gathering tube

Figure-6 is air intake tubes of three kinds of different types

(5) specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified

A kind of burner of lower air-inlet gas cooker, shown in figure-1, comprise the outer ring burner (1) formed by outer ring burner body (1-1) and annular fire lid (1-2) and form inner burner (2a) by inner burner main body (2a-1) He Huogai (2a-2), the lower end of outer ring burner (1) is connected with air intake tube (3), inner burner (2a) connects into as a whole by the cross connection support (4) of air intake tube (3) upper end with outer ring burner (1), in order to improve heat utilization efficiency, the related burner periphery of the utility model should be equipped with infundibulate heat gathering tube (7) and use together.

Shown in figure-2, when the thermic load that needs gas-cooker is big, available inner burner (2a) is designed to an annular burner (2b); Annular burner (2b) is made up of interior annular firing main body (2b-1) and interior annular fire lid (2b-2).

Shown in figure-3, the outside, the lower end of outer ring burner body (1-1) is connected with induction tunnel (5), and induction tunnel (5) is tangentially sent mist (primary air+combustion gas) into outer ring burner body (1-1); The outside, lower end of inner burner main body (2a-1) is connected with induction tunnel (6), and induction tunnel (6) is tangentially sent mist (primary air+combustion gas) into inner burner main body (2a-1).

Shown in figure-4, the fire of burner lid schematic diagram.

Shown in figure-5, the infundibulate heat gathering tube (7) of the peripheral configuration of burner, the position of fire lid should be at 1/2nd high places of the straight tube of infundibulate heat gathering tube (7), and the pot frame should be located on the bell-mouthed inclined-plane of infundibulate heat gathering tube (7).

Shown in figure-6, the air intake tube can be selected different types according to the taking all factors into consideration of exhausting effect, processing consideration and the cost of burner hearth.

Claims (4)

1. the burner of a lower air-inlet gas cooker, comprise outer ring burner (1) and inner burner (2a), air intake tube (3), inner burner (2a) connects into as a whole by connection support of the cross on the air intake tube (3) (4) and outer ring burner (1), the burner periphery is provided with infundibulate heat gathering tube (7); The lower end that it is characterized in that outer ring burner (1) is connected with air intake tube (3), forms the burner hearth of a up/down perforation.

2. the burner of a kind of lower air-inlet gas cooker according to claim 1, it is characterized in that outer ring burner (1) covers (1-2) by outer ring burner body (1-1) and annular fire and forms, annular fire lid inner ring circumference is provided with fire hole, and the fire hole cross section is bar shaped, trapezoidal or rectangle.

3. the burner of a kind of lower air-inlet gas cooker according to claim 1, it is characterized in that inner burner (2a) is made up of inner burner main body (2a-1) He Huogai (2a-2), the inner burner main body is that circle cross-section is little, the cylindrical structure of vertical length, also can inner burner (2a) be designed to an annular burner (2b) according to the needs of thermic load; Annular burner (2b) has that the ring section is little, the feature of the central area up/down perforation of annular canister height, annular canister; Annular burner (2b) is made up of interior annular firing main body (2b-1) and interior annular fire lid (2b-2), and the inside and outside circle circumference of interior annular fire lid is equipped with fire hole.

4. the burner of a kind of lower air-inlet gas cooker according to claim 1 is characterized in that air intake tube (3) can be made into hyperbolic type air intake tube (3a) or frustum type air intake tube (3b) or straight barrel type air intake tube (3c).

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