CN202432518U - Chinese food frying stove premix burner - Google Patents

Abstract

The utility model discloses a Chinese food frying stove premix burner, which comprises a shell, a premix chamber, a gas source pipeline, a gas nozzle and a burning plate, wherein gas is ejected to an opposite-side shell wall via the gas nozzle along the injection direction transecting the premix chamber; burning-supporting air output by an air blower is introduced via an air blower air source pipeline and enters the premix chamber from the bottom of the premix chamber; the ejected gas is subjected to transverse displacement and is premixed in the premix chamber before burning; when entering a burning chamber via the burning plate, the mixed gas is mixed again because the burning plate is designed into be cellular; the burning plate keeps the high-temperature status on one side of the burning chamber; and after the mixed gas contacts with the burning plate, the mixed gas is heated and pre-burnt. According to the utility model, burning is carried out after gas and air are mixed as fully as possible; when entering the burning chamber, the mixed gas reaches a burning critical point, and the gas is burnt as thoroughly as possible; the thermal efficiency is maximized; and the harmful gas emission is minimized.

Description

Medium frying stove premix burner

technical field

The utility model relates to a gas burning device for a Chinese cooking stove, especially capable of saving energy and reducing emissions.

Background technique

At present, the gas cooker used in the catering industry is composed of a gas nozzle, a combustion-supporting air duct, and a combustion chamber. While the gas is delivered to the combustion chamber through the single-hole linear injection nozzle, the strong combustion-supporting air output by the blower also reaches the combustion chamber through the combustion-supporting air duct, which supplies oxygen for the combustion of the gas and supports combustion. The method is called post-mixed combustion. Its defect is firstly that the mixing quality of gas and air is low, the gas is output by a single-hole linear nozzle, and the chance of contact with air is small, and part of the gas moves away from the combustion chamber with the flue gas before it comes into contact with the air to achieve combustion, and is sucked by the range hood The second is the strong combustion-supporting air output by the blower, which enters the combustion chamber through the air duct to provide oxygen for the combustion of the gas, and at the same time, it plays a role in moving the gas. As the flue gas moves out of the combustion chamber, it is discharged into the air through the range hood in the form of harmful gases such as carbon monoxide. The direct consequence is low thermal efficiency and large emissions of harmful gases.

Contents of the invention

In order to overcome the defects of low thermal efficiency and large emission of harmful gases in traditional Chinese frying stoves, the utility model provides a premixed gas burner for medium frying stoves, which can improve thermal efficiency and reduce harmful gas emissions.

The technical scheme adopted by the utility model when solving its technical problems is: a cylindrical premixer is arranged below the combustion chamber, and the premixer is composed of a housing, a premixing chamber, a gas pipeline, a gas nozzle, and a combustion plate. The lower end of the housing is connected to the air blower duct, the gas pipeline passes through the housing at the lower end of the housing near the bottom, the gas pipeline is connected to the gas nozzle at the extension end of the premixing chamber, and the injection direction of the gas nozzle is transverse to the premixing chamber. The combustion plate is designed in a honeycomb shape and is installed between the premix chamber and the combustion chamber.

The gas passes through the gas nozzle to cross the injection direction of the premixing chamber and sprays to the opposite shell wall. The combustion-supporting air output by the blower is guided by the blower air pipe and enters the premixing chamber from the bottom of the premixing chamber. Carry out cross-cutting movement, pre-mixing before combustion in the pre-mixing chamber; when the mixed gas passes through the combustion plate and enters the combustion chamber, because the combustion plate is designed in a honeycomb shape, the mixed gas can be remixed; The side remains at a high temperature, and the mixed gas is heated and pre-combusted after contact. Combustion is carried out after the gas and air are mixed as fully as possible. When the mixed gas enters the combustion chamber, the critical point of combustion is reached, and the combustion of the gas is as thorough as possible, which maximizes thermal efficiency and minimizes harmful gas emissions.

The beneficial effects of the utility model are: make the gas burn as fully as possible, improve thermal efficiency, reduce energy consumption, and reduce harmful gas emissions.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the schematic cross-sectional view of the structure of the post-mixing burner in the prior art;

Fig. 2 is a schematic cross-sectional view of the burner structure of the utility model.

In the figure, 1. Combustion chamber, 2. Gas nozzle, 3. Blower duct, 4. Premixer housing, 5. Premixer chamber, 6. Gas pipeline, 7. Combustion plate, 8. Combustion air duct.

Detailed ways

In the embodiment of Fig. 1, the post-mixed gas burner of the prior art of the Chinese cooking stove is composed of a combustion chamber 1, a gas nozzle 2, a blower duct 3, a gas pipeline 6, and a combustion-supporting air duct 8. When the gas enters the combustion chamber 1 through the gas nozzle 2, the strong combustion-supporting air output by the blower also reaches the combustion chamber 1 through the combustion-supporting air duct 8 to supply oxygen for combustion of the gas. Its defect is firstly that the mixing quality of gas and air is low. The gas is output in a straight line from the single hole of the gas nozzle 2, and the chance of contact with the air is small. Some of the gas moves away from the combustion chamber 1 with the flue gas before it comes into contact with the air to achieve combustion, and is exhausted. The range hood sucks it away and discharges it into the atmosphere; secondly, the strong combustion-supporting air output by the blower duct 3 enters the combustion chamber 1 through the combustion-supporting air duct 8 to provide oxygen for the combustion of the gas, and at the same time, it plays a role in moving the gas. When it is fully burned and the heat energy is not fully released, it is pushed out of the combustion chamber 1 with the flue gas, and is discharged into the air through the range hood in the form of harmful gases such as carbon monoxide. The direct consequence is low thermal efficiency and large emissions of harmful gases.

In the embodiment of Fig. 2, the utility model is provided with a cylindrical premixer below the combustion chamber 1, and the premixer is composed of a housing 4, a premixing chamber 5, a gas pipeline 6, a gas nozzle 2, and a combustion plate 7. The lower end of the housing 4 is connected to the blower duct 3, the gas pipeline 6 passes through the housing 4 at the lower end of the housing 4 near the bottom, the gas pipeline 6 is connected to the gas nozzle 2 at the extension end of the premixing chamber 5, and the injection direction of the gas nozzle 2 is Transect premix chamber 5. The combustion plate 7 is designed in a honeycomb shape and is installed between the premixing chamber 5 and the combustion chamber 1 . the

The gas passes through the gas nozzle 2 to cross the injection direction of the premix chamber 5, and sprays to the wall of the opposite shell 4. The combustion air output by the blower is guided by the blower air pipe 3, and enters the premixer from the bottom of the premixer shell 4. Mixing chamber 5 cross-cuts the injected gas, and performs premixing before combustion in premixing chamber 4; when the mixed gas enters combustion chamber 1 through combustion plate 7, because combustion plate 7 is designed in a honeycomb shape, the The mixed gas is remixed; the combustion plate 7 is kept at a high temperature on one side of the combustion chamber 1, and the mixed gas is heated and pre-combusted after contact. Combustion is carried out after the gas and air are mixed as fully as possible. When the mixed gas enters the combustion chamber, the critical point of combustion is reached, and the combustion of the gas is as thorough as possible, which maximizes thermal efficiency and minimizes harmful gas emissions.

Claims (1)

1. A premix burner for medium-sized frying stoves is characterized in that: a cylindrical premixer is arranged below the combustion chamber, and the premixer is composed of a housing, a premixing chamber, a gas pipeline, a gas nozzle, and a combustion plate, and the housing The lower end is connected to the blower pipe, the gas pipe passes through the shell at the lower end of the shell near the bottom, and the gas pipe is connected to the gas nozzle at the extension end of the premixing chamber. , installed between the premixing chamber and the combustion chamber.

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