Combustion system and gas stove

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

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a combustion system and a combustion method. Background Art

[0002] Gas stove is one of the most commonly used electrical appliances in home kitchens. Gas stove realizes flame generation and distribution through burner. As one of the burners, atmospheric burner is often used in existing gas stoves. It is a burner designed according to the partial premixed combustion method. In the atmospheric burner: the gas is ejected from the nozzle at a certain pressure and flow rate and enters the air intake contraction tube. The gas draws in the primary air by its own flow inertia. The gas and the primary air are mixed in the ejector and then burned to form a flame. During the combustion process, the flame interacts with the secondary air around the flame.

[0003] In the prior art, the supply of secondary air mainly relies on natural negative pressure induction, and the input accuracy of the secondary air channel is required to be high. If the input amount of secondary air is too much, it will easily lead to the dispersion of flame heat and reduce the heating efficiency. If the input amount of secondary air is too little, the combustion of the gas will be incomplete, resulting in excessive flue gas, and the thermal energy will not be fully utilized. Summary of the invention

[0004] To solve the above technical problems, the present application further improves the existing combustion system structure, in order to obtain a combustion system in which the input amount of secondary air is easy to control and the input is not easily disturbed. One of the purposes of the present invention is to provide a combustion system, and the second purpose is to provide a corresponding gas stove.

[0005] The specific technical solution is described below:

[0006] Combustion system, including:

[0007] A secondary air supply device, on which an air supply pipeline is arranged, and the secondary air supply device has a control element for controlling the gas output flow rate;

[0008] A burner having a gas outflow portion, wherein the gas outflow portion is used to distribute the outflow of the gas to form flames at corresponding positions;

[0009] A shielding member having a partition wall arranged around the gas outflow portion, wherein the lower end of the gas outflow portion cooperates with the inner edge of the shielding member;

[0010] The inner wall of the shielding member surrounds the gas outflow portion to form a combustion area, and the gas supply pipeline supplies gas into the combustion area. The gas here usually refers to air, and the effective component is oxygen therein, so the gas can also be oxygen, which is mainly used to assist the combustion of the gas.

[0011] In the above technical solution, "fuel gas" refers to combustible gas, especially premixed combustible gas.

[0012] By coordinating the improvements in "controllable gas flow" and "relatively closed combustion area", we can obtain a secondary gas with a suitable flow rate and a secondary gas input environment that is not easily disturbed, thereby reasonably avoiding the occurrence of excessive or insufficient secondary gas input, ensuring sufficient gas combustion and improving thermal energy utilization.

[0013] Preferably, the partition wall has a contracting structure that shrinks from top to bottom, and the partition wall has an upper edge that is higher than the upper surface of the gas outflow portion. The upper wall diameter is larger than the lower wall diameter in order to minimize the volume of the combustion area without affecting flame combustion and reduce the retention space of excess gas. The partition wall is higher than the upper surface of the gas outflow portion in order to enhance the shielding effect against external gas.

[0014] Preferably, the inner edge is integrally formed with the outer edge of the lower end of the gas outflow portion. Further preferably, the inner edge is sealedly connected to the outer edge contour of the lower end of the gas outflow portion, and the sealed connection is to block the influence of air from below the shielding member.

[0015] Preferably, a flow divider is further included, and the flow divider is provided with a flow divider interface connected to the air supply pipeline.

[0016] Further preferably, the shielding member is provided with an output portion, and the output portion is provided with a plurality of air supply outlets.

[0017] Further preferably, the flow divider is provided with a gas supplement channel connected to the plurality of gas supplement outlets, the gas supplement channel is also connected to the outlet of the flow divider interface, and the outlet of the flow divider interface is located at the bottom of the gas supplement channel. The gas supplement channel adjusts the distribution of the gas flowing in from the flow divider interface so that the gas is input into the combustion area as evenly as possible from various positions.

[0018] Preferably, the output directions of the plurality of the supplementary air outlets are inclined toward the combustion area, so that the secondary gas is output in a concentrated manner at the flame combustion location, thereby improving the utilization rate of the secondary gas.

[0019] Further preferably, the output directions of several of the air supply outlets are inclined laterally, and the gases output from several of the air supply outlets inclined laterally form a circulating flow state. The circulating secondary gas allows the flame to stay longer inside the pot rack for rotational combustion, thereby improving thermal efficiency.

[0020] Preferably, a liquid receiving pan is further included, and a gas supply interface is arranged on the liquid receiving pan, one end of the gas supply interface is connected to the gas supply pipeline, and the other end of the gas supply interface is connected to the diversion interface.

[0021] Preferably, the secondary air supply device uses a blower as an air source and uses a proportional valve to control the flow of the gas.

[0022] Preferably, a pot rack for supporting the pot is provided on the partition wall. Providing the pot rack on the partition wall facilitates the formation of a relatively compact combustion area and also helps to improve the combustion efficiency.

[0023] A gas stove comprises a combustion system as described in any one of the above technical solutions.

[0024] In summary, the technical solution of the present invention has the following main beneficial effects:

[0025] Compared with the prior art, the technical solution of the present invention can control the secondary gas to obtain a suitable flow rate, and also has a secondary gas input environment that is not easily disturbed, thereby ensuring full combustion of the gas and improving thermal energy utilization.

[0026] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the exploded structure of the combustion system on the gas stove in the embodiment;

[0028] Figure 2 yes Figure 1 A magnified image of area A;

[0029] Figure 3 is a schematic diagram of the vertical cross-sectional structure of the combustion system on the gas stove in the embodiment;

[0030] Figure 4 yes Figure 3 A magnified image of area A;

[0031] Figure 5 is a schematic diagram of the cross-sectional structure of a flow diverter in an embodiment in which the flow diverter interface is arranged on the side;

[0032] Figure 6 Schematic diagram of the combustion method logic of the combustion system in the embodiment.

[0033] Reference numerals:

[0034] 1: Secondary air supply device, 1.1: Air supply pipeline;

[0035] 2: Burner, 2.1: Gas outflow part;

[0036] 3: shielding member, 3.1: partition wall, 3.2: inner edge, 3.3: output part, 3.31: air supply outlet;

[0037] 4: flow divider, 4.1: flow divider interface, 4.2: air supply channel;

[0038] 5: Liquid tray, 5.1: Air supply interface;

[0039] 6: Pot rack;

[0040] a: burning area, b: panel. DETAILED DESCRIPTION

[0041] The present invention is further explained with reference to the following embodiments:

[0042] The core technical problem faced by the technical solution of the embodiment of the present application comes from the inventor's accurate understanding of the prior art. Therefore, how to make the gas burn fully is a technical problem that the inventor urgently needs to solve.

[0043] At the same time, how to further improve thermal efficiency is also a technical problem that the inventors are working hard to solve.

[0044] It should be noted that the embodiments do not constitute a limitation on the protection scope of the claims of the present invention. According to the technical concepts provided / proven by the embodiments, all technical solutions that can be reasonably anticipated by technicians in the relevant technical field should be included in the protection scope of the claims of the present invention.

[0045] The embodiments are described in detail as follows:

[0046] In the prior art, the secondary air supply of the atmospheric burner mainly relies on natural negative pressure injection. If the input amount of secondary air is too much, it will easily lead to the dispersion of flame heat and reduce the heating efficiency. If the input amount of secondary air is too little, the combustion of the gas will be incomplete, resulting in excessive flue gas, and the thermal energy is also not fully utilized. Therefore, the accuracy of the secondary air input and the anti-interference performance during the input process are the technical problems that the present embodiment must first solve.

[0047] For specific solutions, please refer to the attached Figures 1 to 4 , a combustion system for a gas stove, which provides secondary air with controllable flow rate through a secondary air supply device 1, and forms a closed combustion area a around an atmospheric burner 2. This embodiment combines the improvements of "controllable gas flow rate" and "relatively closed combustion area a" to obtain secondary air with a suitable flow rate and an input environment of secondary air that is not easily disturbed, thereby reasonably avoiding the occurrence of excessive or insufficient secondary gas input, so that the gas burns fully and the thermal energy utilization rate is improved.

[0048] Specifically, the secondary air supply device 1 is provided with an air supply pipeline 1.1, and the secondary air supply device 1 uses a blower as an air source and a proportional valve as a control element to control the flow rate of the secondary air;

[0049] The burner 2 has a gas outflow portion 2.1 for distributing the outflow of gas to form flames at corresponding positions;

[0050] The shielding member 3 is indispensable, and includes a partition wall 3.1 arranged around the gas outflow portion 2.1, and an inner edge 3.2 arranged adjacent to the outer edge contour of the gas outflow portion 2.1, wherein the partition wall 3.1 is an annular member gradually contracting from top to bottom, and the partition wall 3.1 has an upper edge higher than the upper surface of the gas outflow portion 2.1, and the purpose of such arrangement is to minimize the volume of the combustion area a as much as possible without affecting the flame combustion, reduce the storage space of the excess gas, and at the same time improve the shielding effect against the external gas;

[0051] In this embodiment, the inner edge 3.2 should be as close as possible to the outer edge contour of the gas outflow portion 2.1. The inner edge 3.2 and the outer edge of the gas outflow portion 2.1 can be a separate design or an integrally formed one. At the same time, whether it is a separate structure or an integral structure, the two can be completely sealed or correspond to each other in a clearance fit manner;

[0052] A flange structure may be provided at the inner edge 3.2, and the flange structure fits with the outer edge contour of the gas outflow portion 2.1 to achieve a sealed connection. The purpose of such a setting is to block the influence of the air from below the shielding member 3.

[0053] In this embodiment, the inner wall of the shielding member 3 surrounds the gas outflow portion 2.1 to form the combustion area a, and the gas supply pipeline 1.1 directly supplies gas to the combustion area a.

[0054] In a preferred embodiment of the combustion system, an output portion 3.3 is provided on the shielding member 3, and a plurality of air supply outlets 3.31 are provided on the output portion 3.3 at intervals. A flow divider 4 is introduced on the basis of the above embodiment. The flow divider 4 is a circular ring-shaped part, on which a gas supply channel 4.2 having a shape matching the plurality of air supply outlets 3.31 on the output portion 3.3 and a flow divider interface 4.1 connected to the above-mentioned gas supply pipeline 1.1 are provided. The gas supply channel 4.2 is connected to the plurality of said gas supply outlets 3.31. The gas supply channel 4.2 can be, for example, an annular groove. Accordingly, the partition wall 3.1 as the pot rack is an adapted annular structure. The output portion 3.3 covers the notch of the above-mentioned gas supply channel 4.2, and the outlet of the flow divider interface 4.1 is located at the groove bottom of the above-mentioned gas supply channel 4.2.

[0055] In this embodiment, the output portion 3.3 and the notch of the air supply channel 4.2 form a sealed connection structure.

[0056] In this embodiment, the air supply channel 4.2 buffers and adjusts the flow rate and pressure distribution of the gas flowing in from the diversion interface 4.1, so as to cooperate with the plurality of air supply outlets 3.31 on the output part 3.3 to allow the gas to be evenly input into the combustion area a from various positions as much as possible.

[0057] In a preferred combustion system embodiment, the output portion 3.3 is an inclined surface arranged facing the combustion area a, so that the output directions of several air supply outlets 3.31 are inclined toward the combustion area a. At the same time, the output directions of several air supply outlets 3.31 are uniformly inclined toward the side so that the output secondary air forms a circulating flow state; the purpose of such a setting is to make the secondary air concentratedly output at the flame combustion point to improve the utilization rate of the secondary air, and the circulating flow state allows the flame to stay inside the combustion area a longer time for rotational combustion, thereby improving thermal efficiency.

[0058] Preferably, in the embodiment of the combustion system including the flow divider 4, a liquid receiving pan 5 is also introduced, and the liquid receiving pan 5 is arranged below the burner 2 to receive the leaked liquid;

[0059] In order to adapt to the gas supply related structure, the liquid receiving tray 5 is provided with a gas supply interface 5.1, one end of which is connected to the gas supply pipeline 1.1, and the other end is connected to the diversion interface 4.1, wherein the liquid receiving tray 5 is clamped on the panel b of the gas stove, and one end of the gas supply interface 5.1 connected to the gas supply pipeline 1.1 is located at the lower surface of the liquid receiving tray 5 and extends downward, that is, the gas supply pipeline 1.1 can be arranged below the panel b of the gas stove and inside the gas stove, and the secondary gas supply device 1 is also arranged inside the gas stove;

[0060] In this embodiment, the air supply pipeline 1.1 is a flexible and deformable component, and the air supply interface 5.1 is a rigid component. The relatively fragile air supply pipeline 1.1 and its connection are arranged inside the gas stove to prevent them from being damaged by external impact. Therefore, this embodiment can also improve the sealing stability and structural stability of the combustion system air path by introducing the liquid tray 5;

[0061] More preferably, the flow diversion interface 4.1 is also a rigid structural member. Although the connection between the flow diversion interface 4.1 and the gas supply interface 5.1 is exposed outside the gas stove, the stability of the gas path structure in the combustion system can be ensured.

[0062] In the above embodiment, the outlet of the flow splitter interface 4.1 is located at the bottom of the air supply channel 4.2, that is, the secondary air is output upward. At this time, the secondary air tends to flow to the nearest air supply outlet 3.31 first, and then fill the space of the air supply channel 4.2 and flow out from other air supply outlets 3.31, resulting in the output of the secondary air not being uniform enough.

[0063] Therefore, please refer to the instructions for Figure 5 In this embodiment, a more preferred technical solution is: the outlet of the diverter interface 4.1 is arranged on the side of the diverter member 4, and the inlet of the diverter interface 4.1 is arranged at the bottom by bending. The side air intake makes the supplementary secondary air, driven by its flow inertia, tend to first fill the space of the air supply channel 4.2, and then flow out from each air supply outlet 3.31, thereby obtaining a relatively uniform output distribution.

[0064] In a preferred embodiment, pot racks 6 for supporting pots are arranged at intervals on the partition wall 3.1. Arranging the pot racks 6 on the partition wall 3.1 facilitates the formation of a relatively compact combustion area a, and also helps to improve the combustion efficiency.

[0065] The embodiment further relates to a gas stove, which uses the combustion system described in any one of the above embodiments.

[0066] Please refer to the attached manual for the combustion method of the combustion system in the above embodiment. Figure 6 When the gas stove is started, the secondary air supply device 1 starts to supply secondary air, and the flow rate of the secondary air is adjusted according to the ratio of the secondary air to the gas;

[0067] If the gas stove cannot be turned on smoothly or a fault occurs during use, turn off the gas stove and the secondary gas supply device 1, or delay blowing for 3 minutes before turning off the secondary gas supply device 1;

[0068] If the secondary gas supply device 1 fails and cannot be started, the combustion system of the gas stove is shut down;

[0069] If the proportional valve control component fails, the secondary air supply device 1 is closed, or the secondary air supply device 1 is closed after a 3-minute delay.

[0070] In the description of this specification, the description with reference to the terms "embodiment", "basic embodiment", "preferred embodiment", "other embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0072] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A combustion system, characterized in that: Included are: A secondary air supply device (1) having an air supply pipeline (1.1) arranged thereon, wherein the secondary air supply device (1) has a control component for controlling the gas output flow rate; A burner (2) having a gas outflow portion (2.1), wherein the gas outflow portion (2.1) is used for splitting the gas flow to form flames at corresponding positions; A shielding member (3) having a partition wall (3.1) arranged around the gas outflow portion (2.1), wherein the lower end of the gas outflow portion (2.1) cooperates with the inner edge (3.2) of the shielding member (3); The inner wall of the shielding member (3) surrounds the gas outflow portion (2.1) to form a combustion area (a), and the gas supply pipeline (1.1) supplies gas to the combustion area (a); An output portion (3.3) is provided on the shielding member (3), and a plurality of air supply outlets (3.31) are provided on the output portion (3.3), and the air supply outlets (3.31) have a vertical output direction. The output portion (3.3) is an inclined surface provided facing the combustion area (a), so that the output directions of the plurality of air supply outlets (3.31) are inclined toward the combustion area (a). At the same time, the output directions of the plurality of air supply outlets (3.31) are uniformly inclined toward the side, so that the output secondary air forms a circulating flow state; The invention also comprises a flow divider (4), wherein the flow divider (4) is provided with a flow divider interface (4.1) connected to the air supply pipeline (1.1), and the flow divider (4) is also provided with an air supply channel (4.2) connected to the plurality of air supply outlets (3.31), the air supply channel (4.2) is arranged transversely, and the air supply channel (4.2) is also connected to the outlet of the flow divider interface (4.1), the outlet of the flow divider interface (4.1) has a transverse output direction, the outlet of the flow divider interface (4.1) is arranged on the side of the flow divider (4), and the inlet of the flow divider interface (4.1) is arranged at the bottom by bending.

2. The combustion system according to claim 1, characterized in that: The partition wall (3.1) has a contracting structure that contracts from top to bottom, and the partition wall (3.1) has an upper edge that is higher than the upper surface of the gas outflow portion (2.1).

3. The combustion system according to claim 1, characterized in that: The inner edge (3.2) and the outer edge of the lower end of the gas outflow portion (2.1) are integrally formed.

4. The combustion system according to claim 1, characterized in that: It also comprises a liquid receiving pan (5), on which a gas supply interface (5.1) is arranged, one end of the gas supply interface (5.1) being connected to the gas supply pipeline (1.1) and the other end of the gas supply interface (5.1) being connected to the flow diversion interface (4.1).

5. The combustion system according to claim 1, characterized in that: The secondary air supply device (1) uses a blower as an air source, and the control component is a proportional valve.

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

7. A gas stove, characterized in that: The invention comprises a combustion system according to any one of claims 1 to 6.

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