CN210179633U - Combustor injection system and gas stove - Google Patents

Abstract

The utility model discloses a combustor draws system of penetrating and gas cooking utensils, wherein, combustor draws system of penetrating includes along first induction apparatus, second induction apparatus and the combustor main part that the gas flow direction was arranged in order, is provided with supercharging device between first induction apparatus and the second induction apparatus. Supercharging device can carry out the pressure boost from the gas that first induction apparatus flows out to improve the gas pressure that gets into in the second induction apparatus, avoid atmospheric pressure to fall the range too big, so that the speed that makes gas flow out combustor main part is roughly equal to burning speed, avoids appearing the condition of tempering, improves the security.

Description

Combustor injection system and gas stove

Technical Field

The utility model relates to a cooking utensils field, in particular to combustor draws system and gas cooking utensils of penetrating.

Background

At present, most burners in the field of cookers adopt a one-time injection structure, gas and air are not uniformly mixed, the combustion efficiency is not high, the discharge amount of nitrogen oxides is large, and the one-time injection burner is difficult to meet the increasing requirements of high energy efficiency and low discharge. In addition, for the combustor of lower air inlet, it has the back fire hidden danger, for the combustor of last air inlet, then there is the load low, the insufficient condition of burning.

Some combustors have also adopted the structure that the second grade penetrated, adopt two injection devices to establish ties promptly, and the gas is in proper order through two injection devices, carries out twice with gas and air and mixes. Although the gas and the air can be uniformly mixed, the gas pressure is reduced too much after passing through the two injection devices, the air flow speed is lower than the combustion speed when the combustor works and burns, the tempering phenomenon easily occurs, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, provide combustor and draw and penetrate system and gas cooking utensils, can reduce the range of falling of gas pressure, avoid appearing the tempering.

According to the utility model discloses an aspect provides combustor injection system, and it includes first induction apparatus, second induction apparatus and the combustor main part of arranging in order along the gas flow direction, be provided with supercharging device between first induction apparatus and the second induction apparatus.

Supercharging device can carry out the pressure boost from the gas that first induction apparatus flows out to improve the gas pressure that gets into in the second induction apparatus, avoid atmospheric pressure to fall the range too big, so that the speed that makes gas flow out combustor main part is roughly equal to burning speed, avoids appearing the condition of tempering, improves the security.

According to the utility model discloses first aspect combustor draw penetrates the system, supercharging device includes the pressure boost shell and sets up the booster pump on the pressure boost shell, be provided with airflow channel in the pressure boost shell, airflow channel's entry end intercommunication first draw penetrates the device, airflow channel's exit end intercommunication second draw penetrates the device.

According to the utility model discloses first aspect the combustor draw penetrates the system, first induction apparatus includes first body, first throat chamber section and the first flaring chamber section that has in order along the gas flow direction in the first body, the entry end of first body is provided with first nozzle.

According to the utility model discloses first aspect the combustor draw penetrates the system, the entry end of first body rotationally is provided with the air door regulating plate.

According to the utility model discloses first aspect the combustor draw penetrates the system, the entrance of first body is provided with gas detection device.

According to the utility model discloses first aspect the combustor draw penetrates the system, second draw penetrates the device and includes the second body, second throat chamber section and second flaring chamber section that follow gas flow direction range in order have in the second body, the entry end of second body is provided with the second nozzle.

According to the utility model discloses first aspect combustor draw penetrates the system, supercharging device includes the pressure boost shell, the air current passageway has in the pressure boost shell, air current passageway's entry end and first induction system are linked together, air current passageway's exit end is provided with the second nozzle.

The burner injection system according to the first aspect of the present invention further comprises a panel, and the second nozzle is located above the panel.

According to a second aspect of the present invention, there is provided a gas cooking appliance comprising a burner injection system as described above.

As above, supercharging device can carry out the pressure boost from the gas that first induction apparatus flows out to improve the gas pressure that gets into in the second induction apparatus, avoid the descending of atmospheric pressure to be too big, so that the speed of gas outflow combustor main part is roughly equal to burning speed, avoids appearing the condition of tempering, improves the security.

Drawings

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

FIG. 1 is a block diagram of an embodiment of a burner injection system;

FIG. 2 is a block diagram of another perspective of a burner injection system embodiment.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the embodiment of the present invention provides a burner injection system, which includes a first injection device 10, a second injection device 20 and a burner main body 30 arranged in sequence along the flowing direction of the fuel gas, and a pressure increasing device 40 is provided between the first injection device 10 and the second injection device 20. Wherein, the direction of the arrow in figure 1 is the gas flowing direction.

The first injection device 10 includes a first pipe 11, a first reducing cavity section 111 and a first expanding cavity section 112 are sequentially arranged in the first pipe 11 along a fuel gas flowing direction, and a first nozzle 12 is arranged at an inlet end of the first pipe 11.

The second injection device 20 includes a second pipe 21, a second converging cavity section 211 and a second diverging cavity section 212 sequentially arranged along the flowing direction of the fuel gas are provided in the second pipe 21, and a second nozzle 22 is provided at the inlet end of the second pipe 21. Preferably, the second nozzle 22 has a gap with an inlet of the second tube 21 to allow external air to enter the second tube 21.

The inner diameters of the first and second converging cavity sections 111 and 211 gradually decrease in the gas flow direction, and the inner diameters of the first and second diverging cavity sections 112 and 212 gradually increase in the gas flow direction.

In operation, the gas is injected into the first pipe 11 through the first nozzle 12, a negative pressure region is formed at the inlet of the first pipe 11 to suck the external air into the first pipe 11, and the gas and the air are mixed for the first time in the first pipe 11; the mixed gas enters the supercharging device 40, the supercharging device 40 supercharges the mixed gas, the supercharged mixed gas is injected into the second pipe body 21 through the second nozzle 22, a negative pressure area is formed at the inlet of the second pipe body 21 so as to suck the outside air into the second pipe body 21, secondary mixing is carried out in the second pipe body 21, the mixed gas flows out through the air outlet in the burner main body 30, the mixed gas is ignited through the ignition device on the gas cooker and then is combusted.

Supercharging device 40 can carry out the pressure boost from the gas that first injection device 10 flows out to the gas pressure that gets into in the second injection device 20 is improved, and the descending amplitude of avoiding atmospheric pressure is too big, so that the speed of gaseous outflow combustor main part 30 is roughly equal to burning speed, avoids appearing the condition of tempering, improves the security. In addition, gas and air can mix more evenly through twice mixture to make the burning more stable, combustion efficiency is high, can satisfy the requirement of high energy efficiency, low emission. The booster pump 42 is also operable to increase the flow rate of the gas to increase the negative pressure at the inlet of the first body 21 to prevent the reverse flow of gas out of the first body 21.

Specifically, the supercharging device 40 includes a supercharging housing 41 and a supercharging pump 42 disposed on the supercharging housing 41, and an air flow passage 411 is disposed in the supercharging housing 41. The gas flowing out of the first injection device 10 flows to the second injection device 20 through the gas flow passage 411, and the booster pump 42 boosts the gas in the gas flow passage 411.

The inlet end of the air flow passage 411 is communicated with the outlet end of the first pipe 11, and the outlet end of the air flow passage 411 is provided with the second nozzle 22. The second nozzle 22 can close the outlet end of the gas flow passage 411, and by this structure, even if a flashback occurs, a flame does not burn into the gas flow passage 411, and safety can be improved.

A damper adjusting plate 50 is rotatably provided at an inlet end of the first duct 11 to adjust an intake air amount.

A gas detecting device 60 is provided at an inlet of the first pipe 11 to detect whether there is gas leakage. The gas detecting device 60 can be directly installed on the first pipe 11, or can be installed at other positions in the gas cooker.

The burner injection system also includes a face plate 70 with the second nozzle 22 positioned above the face plate 70 and the first nozzle 12 positioned below the face plate 70, with the plenum housing 41 passing upwardly through the face plate 70. The panel 70 is mounted on the gas cooker. When tempering occurs, flame cannot enter the interior of the cooker, so that potential safety hazards are reduced. From this, combustor injection system adopts the form of upper air inlet and lower air inlet, has both solved the tempering hidden danger that the air inlet exists under the simple, can do big with the heat load again, satisfies the heavy load demand.

In some embodiments, the pressurizing device 40 may be replaced by a pipe, the pressurizing pump 42 is mounted on the pipe, the panel 70 is provided with a mounting seat, the second nozzle 22 is provided on the mounting seat, one end of the pipe is communicated with the outlet end of the first pipe 11, and the other end of the pipe is communicated with the second nozzle 22.

Furthermore, in some embodiments, the second nozzle 22 may directly close the inlet end of the second tube 21, and only air may enter through the inlet end of the first tube 21.

The utility model also provides a gas cooking utensils, it includes the combustor system of drawing as in above-mentioned embodiment.

The gas cooker includes a bottom case on which a panel 70 is installed, and a gas valve and a pressurizing device 40 provided in the bottom case.

As described above, the supercharging device 40 can supercharge the gas flowing out from the first injection device 10 to improve the gas pressure entering the second injection device 20, and avoid the excessive decrease of the gas pressure, so that the speed of the gas flowing out of the burner main body 30 is approximately equal to the combustion speed, thereby avoiding the occurrence of the backfire condition and improving the safety.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (9)

1. The burner injection system is characterized by comprising a first injection device, a second injection device and a burner body which are sequentially arranged along the flowing direction of fuel gas, wherein a supercharging device is arranged between the first injection device and the second injection device.

2. The burner injection system according to claim 1 wherein the plenum means comprises a plenum housing and a plenum pump disposed on the plenum housing, an air flow passage is disposed in the plenum housing, an inlet end of the air flow passage communicates with the first injection means, and an outlet end of the air flow passage communicates with the second injection means.

3. The burner injection system of claim 1 wherein the first injection apparatus includes a first tube having a first converging section and a first diverging section arranged sequentially along a flow direction of the combustion gas, the first tube having a first nozzle at an inlet end thereof.

4. The burner injection system of claim 3 wherein the inlet end of the first tube is rotatably provided with a damper adjustment plate.

5. The burner injection system of claim 3 wherein a gas detection device is disposed at the inlet of the first tube.

6. The burner injection system of claim 1 wherein the second injection device includes a second tubular body having a second converging section and a second diverging section arranged sequentially along the direction of flow of the combustion gas, the inlet end of the second tubular body being provided with a second nozzle.

7. The burner injection system as claimed in claim 6 wherein the plenum means includes a plenum housing having an air flow passage therein, the inlet end of the air flow passage communicating with the first injection means and the outlet end of the air flow passage being provided with the second nozzle.

8. The burner injection system of claim 6 further comprising a face plate, the second nozzle being positioned above the face plate.

9. Gas hob, characterized in, that it comprises a burner injection system according to any of the claims 1 to 8.

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