CN118705618B

CN118705618B - Combustion system and gas stove

Info

Publication number: CN118705618B
Application number: CN202411219678.9A
Authority: CN
Inventors: 楼国进; 马利亚; 宋小明; 任富佳
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2024-09-02
Filing date: 2024-09-02
Publication date: 2025-03-21
Anticipated expiration: 2044-09-02
Also published as: CN118705618A

Abstract

The combustion system and the gas stove belong to the technical field of household appliances. The combustion system includes: a secondary air supply device, on which an air supply pipeline is arranged; a burner, having a gas outflow portion, the gas outflow portion is used to divert the gas to form a flame at a corresponding position; a shielding member, having a partition wall arranged around the gas outflow portion, the lower end of the gas outflow portion cooperates with the inner edge of the shielding member; the inner wall of the shielding member surrounds the gas outflow portion to form a combustion area, and the air supply pipeline supplies oxygen into the combustion area. When using the combustion system described in the present invention, the input amount of secondary air is easy to control and is not easily disturbed during input, thereby making the gas burn fully and improving the thermal energy utilization rate.

Description

Combustion system and gas stove

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a combustion system and a combustion method.

Background

The gas stove is one of the most commonly used electrical appliances in a household kitchen, flame generation and distribution are realized through a burner, the gas stove is used as one of the burners, an atmospheric burner is commonly used in the existing gas stove, the atmospheric burner is designed according to a partial premixed combustion method, in the atmospheric burner, gas is sprayed out from a nozzle at a certain flow rate under a certain pressure and enters an air suction shrinkage tube, primary air is sucked by the gas according to the flow inertia of the gas, the gas and the primary air are mixed in an ejector and then combusted, flame is formed, and the flame interacts with secondary air around the flame in the combustion process.

In the prior art, the secondary air supply mainly depends on natural negative pressure injection, the requirement on the input precision of a secondary air channel is higher, if the secondary air input quantity is excessive, the heat dispersion of flame is easy to cause, the heating efficiency is reduced, the secondary air input quantity is too little, the combustion of fuel gas is insufficient, the flue gas exceeds standard, and the heat energy is not fully utilized.

Disclosure of Invention

In order to solve the technical problems, the application further improves the structure of the existing combustion system so as to obtain a combustion system with convenient control of the input amount of secondary air and difficult interference in input. One of the purposes of the application is to provide a combustion system, and the other purpose is to provide a corresponding gas stove.

The specific technical scheme is as follows:

A combustion system comprising:

the secondary air supplementing device is provided with an air supplementing pipeline and is provided with a control piece for controlling the output flow of air;

A burner having a gas outflow portion for distributing outflow of gas to form flames at corresponding positions;

A shielding member having a partition wall provided around the circumference of the gas outflow part, the lower end of the gas outflow part being fitted to the inner edge of the shielding member;

The inner wall of the shielding member encloses the gas outflow part to form a combustion area, the gas supplementing pipeline supplies gas into the combustion area, the gas is usually air, and the effective component is oxygen in the gas, so the gas can also be oxygen and is mainly used for assisting the combustion of gas.

In the above technical solution, "fuel gas" refers to combustible gas, especially premixed combustible gas.

The two improvements of the gas flow control and the relatively closed combustion area are matched to obtain secondary gas with proper flow and secondary gas input environment which is not easy to interfere, so that the condition that the secondary gas input amount is too large or too small is reasonably avoided, the gas combustion is sufficient, and the heat energy utilization rate is improved.

Preferably, the partition wall has a folded structure that is shrunk from top to bottom, the partition wall has an upper edge that is higher than the upper surface of the gas outflow part, the diameter of the upper wall surface is larger than that of the lower wall surface in order to reduce the volume of the combustion area as much as possible without affecting the combustion of flame, the remaining space of the redundant gas is reduced, and the partition wall is higher than the upper surface of the gas outflow part in order to improve the shielding effect on the external gas.

Preferably, the inner edge is integrally formed with the outer edge of the lower end of the gas outflow part, and more preferably, the inner edge is in sealing connection with the outer edge profile of the lower end of the gas outflow part, and the sealing connection is used for blocking the influence of air from the lower part of the shielding part.

Preferably, the device further comprises a shunt piece, and a shunt interface communicated with the air supplementing pipeline is arranged on the shunt piece.

Further preferably, an output part is arranged on the shielding piece, and a plurality of air supplementing outlets are arranged on the output part.

Further preferably, the flow dividing member is further provided with a plurality of air supplementing channels communicated with the air supplementing outlets, the air supplementing channels are further communicated with the outlets of the flow dividing interfaces, and the outlets of the flow dividing interfaces are located at the bottoms of the air supplementing channels. The gas supplementing channel adjusts the distribution of the gas flowing in from the split-flow interface so that the gas is uniformly input into the combustion area from each position as much as possible.

Preferably, the output directions of the plurality of air supplementing outlets are inclined towards the combustion area, so that the secondary air is intensively output at the flame combustion position, and the utilization rate of the secondary air is improved.

Further preferably, the output directions of the plurality of air supplementing outlets are inclined towards the side direction, the air output by the plurality of air supplementing outlets which are inclined towards the side direction forms a circulating flow state, and the circulating secondary air enables flames to stay in the pot rack for a longer time for rotary combustion, so that the heat efficiency is improved.

Preferably, the device further comprises a liquid containing disc, wherein the liquid containing disc is provided with an air supplementing interface, one end of the air supplementing interface is communicated with the air supplementing pipeline, and the other end of the air supplementing interface is communicated with the split-flow interface.

Preferably, the secondary air supplementing device takes a blower as an air source, and controls the flow of air by a proportional valve.

Preferably, the partition wall is provided with a pot rack for supporting the pot, and the pot rack is arranged on the partition wall so as to form a relatively compact combustion area, thereby being beneficial to improving the combustion efficiency.

The gas stove comprises the combustion system of any technical scheme.

In summary, the technical scheme of the invention has the following main beneficial effects:

Compared with the prior art, the technical scheme of the invention can control and obtain the secondary gas with proper flow, and has the secondary gas input environment which is not easy to be disturbed, so that the gas combustion is sufficient, and the heat energy utilization rate is improved.

Further or more detailed benefits will be described in connection with specific embodiments.

Drawings

FIG. 1 is a schematic view showing an exploded structure of an upper combustion system of a gas range in an embodiment;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is a schematic view showing a vertical sectional structure of a combustion system on a gas range in an embodiment;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is a schematic cross-sectional view of a diverter in an embodiment with a diverter interface disposed laterally;

FIG. 6 is a logical schematic of a combustion process of the combustion system of the example embodiment.

Reference numerals:

1, a secondary air supplementing device and 1.1, an air supplementing pipeline;

2, a burner, 2.1, a fuel gas outflow part;

3, a shielding piece, 3.1, a partition wall, 3.2, an inner edge, 3.3, an output part and 3.31, a gas supplementing outlet;

4, a flow dividing piece, 4.1, a flow dividing interface and 4.2, an air supplementing channel;

5, a liquid containing disc and 5.1, an air supplementing interface;

6, a pot holder;

a is combustion area, b is panel.

Detailed Description

The invention will be further explained with reference to examples:

The core technical problem faced by the technical scheme of the embodiment of the application is derived from the accurate cognition of the inventor on the prior art, so that how to enable the gas combustion to be fully realized is a technical problem which the inventor needs to solve.

Meanwhile, how to further improve the thermal efficiency is also a technical problem which the inventor is focused on to solve.

It should be noted that, the embodiments do not limit the scope of the claims of the present invention, and according to the technical concepts provided/proven by the embodiments, those skilled in the art can reasonably expect technical solutions to be covered in the scope of the claims of the present invention.

The examples are detailed below:

In the prior art, secondary air supply of an atmospheric burner mainly depends on natural negative pressure injection, if the input amount of secondary air is too large, heat dispersion of flames is easy to cause, heating efficiency is reduced, the input amount of secondary air is too small, combustion of fuel gas is insufficient, flue gas is out of standard, and heat energy is not fully utilized, so that accuracy of secondary air input and anti-interference performance in the input process are the technical problems to be solved at first.

Referring to fig. 1-4, a combustion system for a gas stove is disclosed, the combustion system provides secondary air with controllable flow through a secondary air supplementing device 1, a closed combustion area a is formed around an atmospheric burner 2, the embodiment is matched with the improvement of the two aspects of 'relatively closed combustion area a', the secondary air with proper flow and the input environment of the secondary air which is not easy to interfere are obtained, so that the condition that the input amount of secondary air is too large or too small is reasonably avoided, the gas combustion is sufficient, and the heat energy utilization rate is improved.

Specifically, the secondary air supplementing device 1 is provided with an air supplementing pipeline 1.1, the secondary air supplementing device 1 takes a blower as an air source, and takes a proportional valve as a control piece to control the flow of secondary air;

the burner 2 then has a gas outflow 2.1 for distributing the outflow of gas to form a flame in the respective position;

the gas burner is characterized by also comprising a shielding piece 3, wherein the shielding piece 3 is provided with a partition wall 3.1 which is arranged around the gas outflow part 2.1 and an inner edge 3.2 which is arranged adjacent to the outer edge outline of the gas outflow part 2.1, the partition wall 3.1 is an annular piece which is gradually folded from top to bottom, and the partition wall 3.1 is provided with an upper edge which is higher than the upper surface of the gas outflow part 2.1, so that the volume of a combustion area a is reduced as much as possible on the premise of not influencing flame combustion, the residual space of redundant gas is reduced, and the shielding effect on external gas can be improved;

In this embodiment, the inner edge 3.2 is close to the outline of the outer edge of the gas outflow portion 2.1 as much as possible, and the inner edge 3.2 and the outer edge of the gas outflow portion 2.1 may be separately designed or integrally formed as one piece, and meanwhile, both of the separate structure and the integral structure may be completely sealed or may correspond to each other in a clearance fit manner;

A flange structure can be provided at the inner edge 3.2, which flange structure is in sealing connection with the outer edge contour of the gas outflow 2.1, which is provided in order to block the influence of air from below the shielding 3.

In this embodiment, the inner wall of the shield 3 encloses the gas outflow portion 2.1 to form the combustion area a, and the gas supply line 1.1 directly supplies gas into the combustion area a.

In the preferred combustion system embodiment, an output part 3.3 is arranged on the shielding piece 3, a plurality of air supplementing outlets 3.31 are arranged on the output part 3.3 at intervals, a splitter piece 4 is also introduced on the basis of the embodiment, the splitter piece 4 is a circular part, an air supplementing channel 4.2 which is matched with the plurality of air supplementing outlets 3.31 on the output part 3.3 in shape and a split joint 4.1 which is communicated with the air supplementing pipeline 1.1 are arranged on the splitter piece, the air supplementing channel 4.2 is communicated with the plurality of air supplementing outlets 3.31, the air supplementing channel 4.2 can be an annular groove, the corresponding partition wall 3.1 which is used as a pot rack is of an adaptive annular structure, the output part 3.3 covers the notch of the air supplementing channel 4.2, and the outlet of the split joint 4.1 is positioned at the bottom of the air supplementing channel 4.2;

In this embodiment, the output portion 3.3 and the notch of the air supply channel 4.2 form a sealing connection structure.

In this embodiment, the air supplementing channel 4.2 buffers and adjusts the flow and pressure distribution of the air flowing from the split-flow interface 4.1, so as to match with the plurality of air supplementing outlets 3.31 on the output part 3.3 to make the air input into the combustion area a from each position as uniform as possible.

In the preferred embodiment of the combustion system, the output part 3.3 is an inclined plane arranged facing the combustion area a, so that the output directions of the plurality of air supplementing outlets 3.31 are inclined towards the combustion area a, and meanwhile, the output directions of the plurality of air supplementing outlets 3.31 are uniformly inclined towards the side, so that the output secondary air forms a circulating flow state, and the aim of the arrangement is to enable the secondary air to be intensively output at the flame combustion position, so that the utilization rate of the secondary air is improved, and the circulating flow state enables the flame to stay in the combustion area a for a longer time for rotary combustion, thereby improving the heat efficiency.

Preferably, in the embodiment of the combustion system comprising the flow divider 4, a liquid tray 5 is also introduced, the liquid tray 5 being arranged below the burner 2 for receiving leaked liquid;

In order to adapt to the gas supplementing related structure, a gas supplementing interface 5.1 is arranged on the liquid containing disc 5, one end of the gas supplementing interface 5.1 is communicated with a gas supplementing pipeline 1.1, the other end of the gas supplementing interface is communicated with a flow dividing interface 4.1, wherein the liquid containing disc 5 is clamped on a panel b of a gas stove, one end of the gas supplementing interface 5.1 connected with the gas supplementing pipeline 1.1 is positioned on the lower surface of the liquid containing disc 5 and extends downwards, namely, the gas supplementing pipeline 1.1 can be arranged below the panel b of the gas stove and inside the gas stove, and the secondary gas supplementing device 1 is simultaneously arranged inside the gas stove;

In the embodiment, the air supplementing pipeline 1.1 is a flexible deformable part, the air supplementing interface 5.1 is a rigid part, and the relatively fragile air supplementing pipeline 1.1 and the connection part thereof are arranged in the gas stove, so that the gas stove is prevented from being damaged by external impact, and the sealing stability and the structural stability of the gas circuit of the combustion system can be improved by introducing the liquid containing disc 5;

More preferably, the shunt interface 4.1 is also a rigid structural member, and the connection part of the shunt interface and the air supplementing interface 5.1 is exposed outside the gas stove, so that the stability of the air path structure in the combustion system can be ensured.

In the above embodiment, the outlet of the split-flow port 4.1 is located at the bottom of the air-supplementing channel 4.2, that is, the secondary air is output upwards, at this time, the secondary air tends to flow to the nearest air-supplementing outlet 3.31, and then the space of the air-supplementing channel 4.2 is refilled and flows out from the other air-supplementing outlets 3.31, so that the output of the secondary air is not uniform enough yet;

therefore, referring to fig. 5 of the specification, in the preferred embodiment, the outlet of the split-flow connector 4.1 is disposed at the side of the split-flow member 4, the inlet of the split-flow connector 4.1 is disposed at the lower side by bending, and the side air intake makes the supplementary secondary air more prone to fill the space of the air-supplementing channel 4.2 under the driving of the flow inertia, and then flows out from each air-supplementing outlet 3.31, so as to obtain relatively uniform output distribution.

In the preferred embodiment, the pot holders 6 for supporting the cookware are arranged on the partition wall 3.1 at intervals, and the pot holders 6 are arranged on the partition wall 3.1 so as to form a relatively compact combustion area a, thereby also facilitating the improvement of the combustion efficiency.

Embodiments also relate to a gas burner using the combustion system according to any of the embodiments above.

In the combustion method of the combustion system in the above embodiment, referring to fig. 6 of the specification, when the gas stove is started, the secondary air supplementing device 1 starts supplementing secondary air, and the flow rate of the secondary air is adjusted according to the ratio of the secondary air to the gas;

If the gas stove cannot be smoothly started or faults occur in the middle of use, the gas stove and the secondary air supplementing device 1 are closed, or the secondary air supplementing device 1 is closed after 3 minutes of time delay blowing;

if the secondary air supplementing device 1 fails and cannot be started, the combustion system of the gas stove is closed;

If the control piece of the regulated proportional valve fails, the secondary air supplementing device 1 is closed, or the secondary air supplementing device 1 is closed after 3 minutes of time delay blowing.

In the description of the present specification, reference to the terms "embodiment," "base embodiment," "preferred embodiment," "other embodiments," "example," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A combustion system, comprising:

The secondary air supplementing device (1) is provided with an air supplementing pipeline (1.1), and the secondary air supplementing device (1) is provided with a control piece for controlling the output flow of air;

-a burner (2) having a gas outflow (2.1), the gas outflow (2.1) being for the split flow of gas to form a flame in a respective position;

A shielding member (3) provided with a partition wall (3.1) arranged around the fuel gas outflow part (2.1), wherein the lower end of the fuel gas outflow part (2.1) is matched with the inner edge (3.2) of the shielding member (3);

The inner wall of the shielding piece (3) surrounds the fuel gas outflow part (2.1) to form a combustion area (a), and the gas supplementing pipeline (1.1) supplies gas into the combustion area (a);

an output part (3.3) is arranged on the shielding piece (3), a plurality of air supplementing outlets (3.31) are arranged on the output part (3.3), the air supplementing outlets (3.31) have vertical output directions, the output part (3.3) is an inclined plane arranged facing the combustion area (a), the output directions of the plurality of air supplementing outlets (3.31) are inclined towards the combustion area (a), and meanwhile, the output directions of the plurality of air supplementing outlets (3.31) are inclined towards the side direction consistent with each other, so that the output secondary air forms a circulating flow state;

Still including reposition of redundant personnel spare (4), be provided with on reposition of redundant personnel spare (4) with reposition of redundant personnel pipeline (1.1) reposition of redundant personnel interface (4.1) that are linked together, reposition of redundant personnel spare (4) are last still to be provided with a plurality of the air supplementing passageway (4.2) that air supplementing export (3.31) are linked together, air supplementing passageway (4.2) transversely set up, air supplementing passageway (4.2) still with the export of reposition of redundant personnel interface (4.1) is linked together, the export of reposition of redundant personnel interface (4.1) has horizontal output direction, the export of reposition of redundant personnel interface (4.1) sets up in the side of reposition of redundant personnel spare (4), the entry of reposition of redundant personnel interface (4.1) then sets up in the below through buckling.

2. The combustion system according to claim 1, wherein the partition wall (3.1) has a folded structure which is shrunk from top to bottom, and the partition wall (3.1) has an upper edge which is higher than an upper surface of the gas outflow portion (2.1).

3. The combustion system according to claim 1, wherein the inner rim (3.2) is integrally formed with the outer rim of the lower end of the gas outflow portion (2.1).

4. The combustion system according to claim 1, further comprising a liquid containing disc (5), wherein a gas supplementing interface (5.1) is arranged on the liquid containing disc (5), one end of the gas supplementing interface (5.1) is communicated with the gas supplementing pipeline (1.1), and the other end of the gas supplementing interface is communicated with the flow dividing interface (4.1).

5. The combustion system according to claim 1, wherein the secondary air supplementing device (1) takes a blower as an air source, and the control part is a proportional valve.

6. The combustion system according to claim 1, characterized in that a pot holder (6) for supporting a pot is provided on the partition wall (3.1).

7. The gas stove is characterized by comprising the combustion system of any one of claims 1-6.