CN201180998Y - Updraft burner - Google Patents

Abstract

A burner with upward air intake, including an outer fire cover, a central fire cover, a gas distribution cover, a gas distribution seat and a base arranged in sequence from top to bottom, and a central nozzle and an outer ring nozzle are arranged in the base, and the outer fire cover is Ring groove shape, its inner surface and top surface are provided with evenly distributed strip-shaped fire grooves, and the center of the outer fire cover of the strip-shaped fire grooves is arranged in an offset ring array. The strip-shaped fire groove is L-shaped, keeping a certain distance from the inner bottom end surface and the outer surface of the outer fire cover; and the top strip-shaped fire groove is offset and inclined. The inner surface of the outer fire cover in the utility model has sufficient height, and the air outlet direction of the bar-shaped fire groove faces the center of the circle but has a certain offset distance, so that the burning flame rotates and cohesively around the center of the burner circle, and the flame concentrates to heat the center of the bottom of the pot And spread evenly to the circumference to achieve the effect of cohesive combustion and uniform heating of the flame. Due to the cohesive combustion method with the bottom closed and the stove surface entering the air, it can prevent spills from entering the stove, and it is also anti-fouling and easy to clean. It has excellent combustion conditions at various fire positions.

Description

Updraft burner

technical field

The utility model relates to a burner of a gas stove, in particular to a burner with an upward air intake.

Background technique

At present, the burners used in gas stoves are basically divided into two types of air intake from the nozzle ejection: (1) the bottom air intake combustion method of the stove bottom shell, (2) the air supply method of the stove panel surface Complete upward air combustion method.

In the first combustion mode, the air required for the injection of the nozzle comes from the bottom shell of the cooker, and when the user is using the cooker, the door of the cabinet under the table is mostly sealed, so that when the cooker is in use, it will cause excessive CO in the flue gas and other poor combustion. At the same time, when the stove is in use, it is easy for the user to open and close the cabinet door to backfire or flame out. In addition, the soup spilled during cooking is easy to flow into the stove, making it difficult to clean and corrode the bottom shell. For example, Chinese Patent Document No. CN2916392Y discloses a burner for a gas cooker, which includes a central burner cover, an outer burner cover and a burner head with an ejector tube, and is characterized in that it also includes a chassis, which is provided with an inner cavity, There are two or more inner flanges evenly distributed on the bottom of the cavity, and the outer flange protrudes from the lower side of the inner plate fixed in the inner cavity to match the inner flange at the bottom of the inner cavity. The central fire and gas cavity communicates with the central gas channel on the burner head. There is a through hole in the center of the bottom of the inner cavity to match the outer wall of the outer gas channel on the burner head. It is composed of the inner wall of the inner cavity of the chassis and the outer wall of the inner plate. The outer ring fire and gas groove matches the outer fire cover, and the outer ring fire and gas groove communicates with the outer gas passage on the stove head through the passage between the outer flanges on the lower side of the inner plate. The burner of this structure burns insufficiently and is also difficult to clean.

Although the second combustion method solves the deficiencies of the first method, there are deficiencies such as low firepower, uneven spread of flame, uneven heating of the bottom of the pot, and low thermal efficiency. When the above nozzles are adjusted to a small fire, the pressure in front of each nozzle is too low because four or more nozzles divide the gas pressure equally, and the gas cannot inject enough air, resulting in a yellow flame in the center fire or outer ring fire .

Utility model content

The purpose of this utility model is to provide a kind of combustion with simple and reasonable structure, fully air supply from the stove surface, cohesive flame combustion, pollution-guiding and cleaning, high thermal intensity, uniform heating, high thermal efficiency, anti-pollution and easy cleaning. device to overcome the deficiencies in the prior art.

A burner designed for this purpose, including an outer fire cover, a central fire cover, a gas distribution cover, a gas distribution seat and a base arranged in sequence from top to bottom, and a central nozzle and an outer ring nozzle are arranged in the base Its structural feature is that the outer fire cover is in the shape of a ring groove, and its inner surface and top surface are provided with evenly distributed strip-shaped fire grooves.

The strip-shaped fire groove is similar to an L shape, keeping a certain distance from the inner bottom end surface and the outer surface of the outer fire cover, and not connecting with them; and the top strip-shaped fire groove is biased and inclined.

The inner ring of the outer fire cover facing downward is crimped on the gas distribution cover, the outer ring is crimped on the gas distribution seat, the upper part of the gas distribution cover is matched with the outer fire cover, and the lower part is installed with the gas distribution seat to form two independent Air channel and gas channel; a vertical center injection tube is arranged in the center of the gas distribution seat, and there are two or more outer injection tubes evenly distributed around the center injection tube. The central axis of the center injection tube and the center nozzle The central axis of the outer injection tube is coaxial with the central axis of the outer ring nozzle, and an air channel is provided between the air distribution cover and the air distribution seat, and the air distribution seat is connected to the base through the boss at its lower part , the outer edge of the upper part of the base is provided with an annular platform for assembling the panel of the cooker.

Two or more downward semi-closed passages and two or more open passages are distributed on the air distribution cover at intervals. After the gas distribution cover and the lower gas distribution seat are installed, the outer injection tube The top outlet is facing the semi-closed channel, the top outlet of the center injection tube is facing the open channel, the annular open cavity is arranged between the outer injection tubes, the upper part of the annular open cavity is facing the open channel of the gas distribution cover, and its lower part is downward The shutter is extended to block or guide spills. The lower part of the shutter hangs to the annular platform of the base, and communicates with the atmosphere through the upper part of the cooker panel. The middle of the fire cover and the central fire cover are connected, and there is a gap between the shutter and the annular platform. The lower part of the air distribution seat is provided with a boss to match the groove of the base. Keep clearance from base ring platform.

The base is a cup-shaped body, and its upper part is provided with four grooves for positioning and matching with the four bosses on the gas distribution seat. There is a gap between the uppermost ring of the base and the extended skirt of the gas distribution cover. The upper air channel and the lower air channel leading to the outside communicate with the central nozzle and the outer ring nozzle respectively.

The utility model is provided with air passages and gas passages distributed at intervals between the gas distribution cover and the gas distribution seat. The injection pipe communicates with the nozzle below; at the same time, the air distribution seat is installed and matched with the lower base circumference with a gap in the vertical direction. The base is composed of a cup-shaped upper open cavity, and its lower part corresponds to the injection pipe of the air distribution seat. Nozzles are installed, and the outer ring-shaped platform on the upper part of the base is assembled with the cooker panel and installed with the upper air distribution seat with a gap in the vertical direction. Therefore, all the primary air ejected by the nozzle comes from the surface of the cooker panel when the nozzle sprays air. It needs to be provided in the bottom shell of the cooker. At the same time, the secondary air required for the combustion of the outer fire cover and the inner fire cover is also provided by the surface of the cooker panel through the air passage between the outer circumference of the outer fire cover and the middle of the inner and outer fire covers; so that the entire burner burns The primary and secondary air required during combustion are supplied from the surface of the cooker panel instead of from the bottom shell under the cooker panel, which completes the complete upward air intake during combustion.

The gas distribution seat in the utility model has a central injection tube and two or three outer injection tubes evenly distributed in the circumference, and the central axis of the injection tube is coaxial with the central axis of the same number of corresponding nozzles below. The outer ring fire uses two or three nozzles. When it is adjusted to a small fire, the pressure in front of each nozzle will not be too low, and the gas can inject enough air to burn. The combustion condition is good, and there is no center fire or outer ring fire. Huang Yan.

The inner surface of the outer fire cover in the utility model has enough height, and the air outlet direction of the bar-shaped fire groove faces the center of the circle but has a certain offset distance, so that the burning flame rotates and cohesively around the center of the burner circle, and the flame concentrates to heat the center of the bottom of the pot And spread evenly to the circumference to achieve the effect of cohesive combustion and uniform heating of the flame.

The utility model adopts the cohesive combustion method with the bottom closed and the stove surface entering the air, which can prevent spills from entering the stove, and is also anti-fouling and easy to clean. The combustion condition is excellent when used in the position.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of an embodiment of the utility model.

Fig. 2 is a schematic diagram of the three-dimensional structure of the outer fire cover.

Figure 3 is a schematic diagram of the front view of the outer fire cover.

Fig. 4 is a three-dimensional structural diagram of the utility model after assembly.

Fig. 5 is a schematic diagram of the front structure of the utility model after assembly.

FIG. 6 is a schematic diagram of the cross-sectional structure along line A-A of FIG. 5 .

FIG. 7 is a schematic diagram of the cross-sectional structure along B-B of FIG. 5 .

In the figure: 1 is the outer fire cover, 1.1 is the strip fire groove, 1.2 is the inner side, 1.3 is the top surface, 1.4 is the air outlet direction, 1.5 is the lower end of the inner circle of the outer fire cover, 1.6 is the outer circle of the outer fire cover The lower end, 2 is the central fire cover, 2.1 is the lower end of the outer circle, 2.2 is the inner cavity, 3 is the gas distribution cover, 3.1 is the inner circle upper end of the gas distribution cover, 3.2 is the outer circle upper end of the gas distribution cover, 3.3 is a semi-closed channel, 3.4 is an open channel, 4 is the air distribution seat, 4.1 is the central injection tube, 4.2 is the upper end of the middle circle of the air distribution seat, 4.3 is the outer injection tube, 4.4 is the shroud, 4.5 is the extension Skirt, 4.6 is the boss, 5 is the center nozzle, 6 is the outer ring nozzle, 7 is the base, 7.1 is the ring platform, 7.2 is the groove, 7.3 is the center of the bottom, 7.4 is the circumference, 7.5 is the upper airway, 7.6 is the lower air passage, 9 is the central fire mixing cavity, 10 is the outer ring fire mixing cavity, 11 is the semi-open air supply channel, 47.1 is the main space, and 47.2 is the auxiliary space.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to Fig. 1, the burner of the air inlet is composed of an outer fire cover 1, a central fire cover 2, a gas distribution cover 3, a gas distribution seat 4 and a base 7, and the center nozzle 5 and the outer ring nozzle 6 are arranged in the base 7.

Referring to Fig. 2-Fig. 7, the outer fire cover 1 is provided with several strip-shaped fire grooves, and the strip-shaped fire grooves are evenly arranged on the inner surface 1.2 and the top surface 1.3 of the outer fire cover 1, and one of the strip-shaped fire grooves 1.1 is parallel to The X-axis of the projection surface of the outer fire cover 1 has a certain distance therefrom, and the other strip-shaped fire grooves are evenly distributed in a regular ring array centered on the center of the circle of the outer fire cover 1 in this form. There is a certain offset distance, so that the burning flame rotates and coheses around the center of the burner, and the flame heats the center of the pot bottom and spreads evenly to the circumference, so as to achieve the function of cohesive combustion and uniform heating of the flame. The lower end 2.1 of the outer circle of the central fire cover 2 is sealed and installed with the upper end 3.1 of the inner circle of the gas distribution cover 3, and the inner cavity 2.2 communicates with the central injection pipe 4.1 of the gas distribution seat 4 and extends to the upper part of the central nozzle 5, forming a An intercommunicated gas and air central fire mixing chamber 9.

The bar-shaped fire groove 1.1 of the outer fire cover 1 does not cut through the inner circle lower end 1.5 and the outer circle lower end 1.6 of the outer fire cover, so that the structure is more stable, durable burning is not easy to deform; the inner circle lower end 1.5 of the outer fire cover 1 , the lower end of the outer circle 1.6 is installed in cooperation with the upper end of the outer circle 3.2 of the gas distribution cover 3 and the upper end of the middle circle 4.2 of the gas distribution seat 4 respectively, and the inside communicates with the outer injection pipe 4.3 of the gas distribution seat 4 and extends to the outside The upper part of the ring nozzle 6 is used to separate the internal gas-air mixture from the external air for normal combustion; the gas distribution cover 3 is distributed with two or more downward semi-closed passages 3.3, and two or two More than two open passages 3.4, after installing with the gas distribution seat 4 of the bottom, its semi-closed passage 3.3 and open passage 3.4 are facing the outer injection pipe 4.3 upper port and the shroud 4.4 of the gas distribution seat 4 respectively, like this, the outer fire cover 1 The lower part, the semi-closed channel 3.3 of the gas distribution cover 3, and the outer injection pipe 4.3 of the gas distribution seat 4 are connected and extended to the upper part of the outer ring nozzle 6 to form a connected gas and air outer ring fire mixing chamber 10.

The open channel 3.4 of the gas distribution cover 3 cooperates with the shroud 4.4 of the gas distribution seat 4, and leads to the outside through the extended skirt 4.5 of the gas distribution seat 4, that is, the surface of the cooker panel, forming a semi-open air supply channel 11. As mentioned above, the gas and air central fire mixing chamber 9, the gas and air outer ring fire mixing chamber 10, and the semi-open air supply channel 11 are used independently and do not interact with each other, so that the center fire and the outer ring fire It can be used and adjusted independently, and the secondary air required for combustion is also directly provided from the surface of the cooker panel by the semi-open air supply channel 11, completing the complete surface air intake function of the secondary air.

As mentioned above, the upper extension skirt 4.5 of the gas distribution seat 4 covers the annular platform 7.1 of the base 7, and the lower shield 4.4 hangs to cover the annular platform 7.1 of the base 7, and communicates with the atmosphere through the upper part of the cooker panel. The upper port of the outer ejector tube 4.3 between the shutters 4.4 of the gas distribution seat 4 is blocked or covered by the semi-closed channel 3.3 of the gas distribution cover 3. The extension skirt 4.5 and the shroud 4.4 of the seat 4 flow out of the cooker panel, but will not flow into the cooker bottom shell. There are four bosses 4.6 in the lower part of the gas distribution seat 4 and the four grooves 7.2 of the base 7 are positioned and matched, and the upper extension skirt 4.5 is covered outside the annular platform 7.1 of the base 7. After the gas distribution seat 4 is assembled, the extension skirt 4.5 and the The annular platform 7.1 of the base 7 has a main gap 47.1. At the same time, the shroud 4.4 of the air distribution seat 4 and the annular platform 7.1 of the base 7 have an auxiliary gap 47.2. In addition, the base 7 is a cup-shaped body with a circle and a bottom seal. The center 7.3 and the peripheral ring 7.4 are equipped with a central nozzle 5 and an outer ring nozzle 6. The upper air passage 7.5 at the bottom of the base 7 is connected to the central nozzle 5, and leads to the outside of the base 7 and is connected with the central air intake pipe of the cooker. The lower air passage 7.6 It is connected to the outer ring nozzle 6 and leads to the outside of the base 7, and is connected to the outer ring air intake pipe of the cooker. After ventilation, when the central nozzle 5 and the outer ring nozzle 6 spray gas, the primary air injected by them passes through the main gap 47.1 and The auxiliary space 47.2 is provided by the cooker panel above the base 7, rather than provided by the inside of the cooker, and completes the complete surface air intake function of the central nozzle 5 and the outer ring nozzle 6 to inject primary air.

Claims (5)

1. A burner with upward air intake, comprising an outer fire cover (1), a central fire cover (2), a gas distribution cover (3), a gas distribution seat (4) and a base (7) arranged in sequence from top to bottom ), the base is provided with a central nozzle (5) and an outer ring nozzle (6), which is characterized in that the outer fire cover is in the shape of a ring groove, and its inner surface (1.2) and top surface (1.3) are provided with evenly distributed strip fire Groove (1.1), the strip-shaped fire groove is arranged in a circular array with the center of the outer fire cover as the center of the circle. 2. The burner with upward air intake according to claim 1, characterized in that the strip-shaped fire groove is similar to L-shaped, keeps a certain distance from the inner bottom end surface and the outer surface of the outer fire cover, and does not connect with it; and the top The noodle-shaped fire pit is offset and sloped. 3. The upward wind-intake burner according to claim 1 or 2, characterized in that the inner ring with the outer fire cover facing downward is crimped on the gas distribution cover, the outer ring is crimped on the gas distribution seat, and the gas distribution The upper cover cooperates with the outer fire cover, and the lower part is installed with the gas distribution seat to form two independent air passages and gas passages; the center of the gas distribution seat is provided with a vertical center injection pipe (4.1), and the center injection pipe is evenly distributed There are two or more outer injection tubes (4.3), the central axis of the central injection tube is coaxial with the central axis of the central nozzle, and the central axis of the outer injection tube is coaxial with the central axis of the outer ring nozzle. An air channel is arranged between the air cover and the air distribution seat, and the air distribution seat is connected to the base through the boss (4.6) at the bottom thereof, and the outer edge of the upper part of the base is provided with an annular platform (7.1) for assembling the panel of the cooking range. 4. The upward air-inflow burner according to claim 3, characterized in that two or more downward semi-closed channels and two or more open channels are distributed on the gas distribution cover at intervals. After the channel, the gas distribution cover and the lower gas distribution seat are installed, the top outlet of the outer injection tube is facing the semi-closed channel, the top outlet of the central injection tube is facing the open channel, and the ring-shaped open cavity is arranged between the outer injection tubes. The upper part of the ring-shaped open cavity is facing the open channel of the gas distribution cover, and the lower part is extended downwards with a shutter (4.4) for the function of blocking or guiding spills. The upper part communicates with the atmosphere, and its upper part communicates with the middle of the outer fire cover and the central fire cover through the ring-shaped open cavity and the open channel of the gas distribution cover. The platform is matched with the groove of the base, and the upper extended skirt covers the outside of the annular platform and maintains a gap with the annular platform of the base. 5. The burner for upward air intake according to claim 4, characterized in that the base is a cup-shaped body, and its upper part is provided with four grooves (7.2) for positioning and matching with the four bosses on the gas distribution seat, There is a gap between the uppermost ring of the base and the extended skirt (4.5) of the air distribution cover, and the bottom of the base has an upper air channel (7.5) and a lower air channel (7.6) leading to the outside, which are respectively connected to the central nozzle and the outer ring nozzle. connected.

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