Combustor, gas stove and integrated electric appliance

Abstract

The utility model discloses a combustor, a gas stove and an integrated electric appliance. The burner comprises a gas outlet channel, the gas outlet channel comprises a second flow section and a third flow section arranged on the downstream portion of the second flow section, a step face is arranged between the second flow section and the third flow section, a fire outlet is formed in the tail end of the third flow section, and the fire outlet is suitable for gas and blast air to be sprayed out. The blast air and the fuel gas flow through the gas outlet channel and are finally sprayed out from the fire outlet, the blast air can provide enough oxygen to enable the fuel gas sprayed out from the fire outlet to be in an oxygen-enriched combustion state, and therefore sufficient combustion of the fuel gas is achieved. And the step surface is arranged between the second flow section and the third flow section, a vortex is formed at the position where the step surface is located when gas flows through the step surface, and the formation of the vortex pulls the flowing gas and slows down the flowing of the gas, so that the phenomenon of flame separation of the fire outlet is inhibited, and the flame stabilizing effect is achieved.

Description

Technical Field

[0001] This application relates to the technical field of gas stoves, and particularly relates to a burner, a gas stove, and an integrated electrical appliance. Background Art

[0002] The combustion of the burner of a gas stove requires the participation of primary air and secondary air. Generally, the primary air is mixed with the gas through natural aspiration. However, the amount of primary air is affected by the structure and working conditions. The supplement of secondary air relies on buoyancy and entrainment, which has relatively high requirements for the dimensions of components. In related technologies, a blower is used to forcibly supply blast air to provide sufficient oxygen. Summary of the Utility Model

[0003] This application aims to at least partly solve one of the technical problems in the related technologies. For this purpose, this application provides a burner.

[0004] To achieve the above object, this application discloses a burner, which includes an air outlet channel. The air outlet channel includes a second flow section and a third flow section provided downstream of the second flow section. A stepped surface is provided between the second flow section and the third flow section. The end of the third flow section forms a fire outlet, and the fire outlet is adapted to eject gas and blast air.

[0005] In some embodiments of this application, the cross-sectional area of the second flow section is smaller than that of the third flow section.

[0006] In some embodiments of this application, the stepped surface is perpendicular to the inner walls of the second flow section and the third flow section.

[0007] In some embodiments of this application, the air outlet channel includes a first flow section provided upstream of the second flow section, and a corner is formed at the intersection of the first flow section and the second flow section.

[0008] In some embodiments of this application, the burner includes a second fire outlet, and the second fire outlet is adapted to eject gas and aspirated air.

[0009] In some embodiments of this application, the flame generated by the second fire outlet is adapted to stabilize the flame of the fire outlet.

[0010] In some embodiments of this application, the fire outlets are respectively provided on opposite sides of the second fire outlet. The fire outlet on one side is defined as the first fire outlet, and the fire outlet on the other side is defined as the third fire outlet;

[0011] The first fire outlet is farther from the center of the burner than the second fire outlet, and the second fire outlet is farther from the center of the burner than the third fire outlet.

[0012] In some embodiments of the present application, the first burner orifice, the second burner orifice, and the third burner orifice are on the same horizontal plane.

[0013] In some embodiments of the present application, the second burner orifice is inclined and open towards the orientation where the first burner orifice is located; and / or the second burner orifice is inclined and open towards the orientation where the third burner orifice is located.

[0014] In some embodiments of the present application, the distance between the first burner orifice and the second burner orifice along the radial direction of the burner is not greater than 6 mm, and the distance between the second burner orifice and the third burner orifice along the radial direction of the burner is not greater than 6 mm.

[0015] In some embodiments of the present application, the burner includes a burner cap, and the top surface of the burner cap is provided with the first burner orifice, the second burner orifice, and the third burner orifice, and the top surface of the burner cap is a flat surface.

[0016] In some embodiments of the present application, the burner includes a burner cap, and the burner cap includes a first burner cap, a second burner cap, and a third burner cap. The first burner cap surrounds the second burner cap, and there is an air outlet channel between the first burner cap and the second burner cap. The end of the air outlet channel between the first burner cap and the second burner cap forms the first burner orifice. The second burner cap surrounds the third burner cap, and there is an air outlet channel between the second burner cap and the third burner cap. The end of the air outlet channel between the second burner cap and the third burner cap forms the third burner orifice.

[0017] In some embodiments of the present application, the burner includes a burner head, and the burner head is provided in a first cavity, a second cavity, and a third cavity. The first cavity surrounds the second cavity and is provided with a common wall. The second cavity surrounds the third cavity and is provided with a common wall. The first cavity is communicated with the third cavity. The first burner orifice is communicated with the first cavity. The second burner orifice is communicated with the second cavity. The third burner orifice is communicated with the third cavity.

[0018] In some embodiments of the present application, the burner includes a first ejector tube, a second ejector tube, and a blower. The first ejector tube is connected to the burner head to be communicated with the first cavity or the third cavity. The second ejector tube is connected to the burner head to be communicated with the second cavity. The intake end of the first ejector tube is adapted to receive gas and blast air. The intake end of the second ejector tube is adapted to receive gas and ejector air. The blower is connected and fixed to the first ejector tube to be adapted to provide blast air.

[0019] In some embodiments of the present application, the burner includes a plurality of the first burner orifices, and the plurality of the first burner orifices are arranged in an annular and alternating manner and surround the second burner orifice;

[0020] And / or, the burner includes a plurality of the second flame outlets, and the plurality of the second flame outlets are arranged in an annular and alternating manner and surround the third flame outlet;

[0021] And / or, the burner includes a plurality of the third flame outlets.

[0022] In some embodiments of the present application, the first flame outlet is in the shape of an annular slit and surrounds the second flame outlet;

[0023] And / or, the second flame outlet is in the shape of an annular slit and surrounds the third flame outlet;

[0024] And / or, the third flame outlet is in the shape of an annular slit.

[0025] The second aspect of the present application discloses a gas stove, and the gas stove includes the above burner.

[0026] In some embodiments of the present application, the gas stove includes a valve body, the valve body is adapted to adjust the gas volume, when the valve body interrupts the gas supply to the first flame outlet and the third flame outlet of the burner, the valve body is adapted to maintain the gas supply to the second flame outlet of the burner, and the blower of the gas stove is in a working state to provide blast air.

[0027] The third aspect of the present application discloses an integrated appliance, and the integrated appliance includes the above gas stove.

[0028] In the technical solution of the present application, the blast air and the gas flow through the air outlet channel and finally spray out from the flame outlet. The blast air can provide enough oxygen to make the gas sprayed out from the flame outlet in a rich-oxygen combustion state, so as to realize the full combustion of the gas. On this basis, by setting the second flow section and the third flow section, and setting a stepped surface between the second flow section and the third flow section, a vortex will be formed at the position where the stepped surface is located when the gas flows through the stepped surface. The formation of the vortex realizes the pulling of the flowing gas and plays a role in decelerating the flow of the gas, thereby suppressing the occurrence of the flame detachment phenomenon at the flame outlet and achieving a flame stabilizing effect.

[0029] Other advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0031] Figure 1Schematic diagram of a burner in some embodiments;

[0032] Figure 2 is Figure 1 an enlarged view of the part marked as A in

[0033] Figure 3 Cross-sectional view of a burner in some embodiments;

[0034] Figure 4 Cross-sectional view of a burner in some embodiments (the cross-section is Figure 3 different);

[0035] Figure 5 is Figure 4 an enlarged view of the part marked as B in

[0036] Figure 6 Cross-sectional view of a burner in some embodiments (the cross-section is Figure 3 different, and the viewing angle is Figure 4 different);

[0037] Figure 7 is Figure 6 an enlarged view of the part marked as C in

[0038] Figure 8 Schematic diagram of the gas outlet channel between the first burner cap and the second burner cap in some embodiments;

[0039] Figure 9 Schematic diagram of the gas outlet channel between the second burner cap and the third burner cap in some embodiments;

[0040] Figure 10 Schematic diagram of a burner cap in some embodiments;

[0041] Figure 11 Exploded view of a burner cap in some embodiments;

[0042] Figure 12 Schematic diagram of a burner head in some embodiments.

[0043] Explanation of the reference numerals in the drawings:

[0044] Burner 100, burner cap 1000, first burner cap 1110, second burner cap 1120, third burner cap 1130, gas outlet channel 1200, first flow section 1210, second flow section 1220, third flow section 1230, flame outlet 1231, stepped surface 1240, corner 1250, first flame port 1310, second flame port 1320, third flame port 1330, burner head 2000, first cavity 2110, second cavity 2120, third cavity 2130, first ejector tube 3100, intake end of the first ejector tube 3110, second ejector tube 3200, intake end of the second ejector tube 3210, fan 4000.

[0045] The realization of the purpose of this application, its functional features and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific Embodiments

[0046] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0048] In this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by this application.

[0050] In the related art, a gas stove includes a valve body. After the valve body is opened, the gas of canned liquefied gas or pipeline natural gas is transmitted along the pipeline. The gas passes through the valve body and is ejected through a nozzle. The gas ejected from the nozzle is sprayed into the interior of the burner. During the process of the gas being sprayed into the interior of the burner, the entrainment of air is synchronously achieved. For the entrainment of air, reference can be made to the related art, which is generally based on the Venturi principle. During the process of the gas being sprayed into the interior of the burner, a negative pressure is formed on the surrounding environment, so that the air in the surrounding environment is synchronously entrained into the interior of the burner along with the spraying of the gas (the air that enters the interior of the burner through the entrainment action is called entrained air, and the entrained air is primary air). The entrained air and the gas are mixed in the interior of the burner and then ejected from the interior of the burner, and then are ignited to form a flame. During the combustion of the gas, through the buoyancy and entrainment effects, the surrounding environment will supply air to the flame (this air is called secondary air), thereby assisting the combustion of the gas. It can be seen that the amount of primary air and the amount of secondary air are the core factors to ensure the full combustion of the ejected gas. However, the amount of primary air is affected by the structure and working conditions, and the supplement of secondary air depends on the buoyancy and entrainment effects, which is a passive supplement and has high requirements for the size of components. Therefore, the gas mostly burns in a lean-oxygen combustion state and burns incompletely only by entrained air and entraining the air in the surrounding environment.

[0051] For this reason, in the first aspect of the present application, a burner 100 is disclosed. As shown in combination with Figure 1 and Figures 6 to 9 , the burner 100 includes an air outlet passage 1200. The air outlet passage 1200 includes a second flow section 1220 and a third flow section 1230. The third flow section 1230 is arranged downstream of the second flow section 1220, and a stepped surface 1240 is arranged between the third flow section 1230 and the second flow section 1220. The end of the third flow section 1230 constitutes a fire outlet 1231, and the fire outlet 1231 is used for the ejection of blast air and gas.

[0052] The blast air and the gas flow through the air outlet passage 1200 and are finally ejected from the fire outlet 1231. The blast air can provide enough oxygen to make the gas ejected from the fire outlet 1231 in a rich-oxygen combustion state, so as to achieve the full combustion of the gas. On this basis, by setting the second flow section 1220 and the third flow section 1230, and arranging a stepped surface 1240 between the second flow section 1220 and the third flow section 1230, a vortex will be formed at the position where the stepped surface 1240 is located when the gas flows through the stepped surface 1240. The formation of the vortex realizes the pulling of the flowing gas and plays a role in decelerating the flow of the gas, thereby suppressing the occurrence of the flame detachment phenomenon at the fire outlet 1231 and achieving a flame stabilization effect.

[0053] The burner 100 will be described below in conjunction with a gas stove. It can be understood that in addition to being applied to a gas stove, the burner 100 can also be applied to other devices that operate by gas combustion.

[0054] Specifically, the flame outlet 1231 is used for the ejection of blast air and gas, that is, the blast air and gas enter the interior of the burner 100, and then flow through the air outlet passage 1200 from the interior of the burner 100. The end of the air outlet passage 1200 constitutes the flame outlet 1231. Finally, the blast air and gas are ejected from the flame outlet 1231 and ignited to form a flame. Similar to the description above, the gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transmitted along the gas pipeline. The gas flows through the valve body and is ejected from the nozzle. The gas ejected from the nozzle is sprayed into the interior of the burner 100. During the process of the gas being sprayed into the interior of the burner 100, blast air is provided. The blast air is generated by a fluid machine, for example, the blast air is provided by the forced blast of a blower 4000. The blast air enters the interior of the burner 100 and mixes with the gas (the blast air is primary air), and then flows along the air outlet passage 1200 with the gas, and finally is ejected from the flame outlet 1231. Compared with entrained air, the blast air can provide enough oxygen, so that the gas ejected from the flame outlet 1231 is in a state of rich-oxygen combustion, thereby enabling the gas ejected from the flame outlet 1231 to burn sufficiently (the flame generated at the flame outlet 1231 can still entrain secondary air from the surrounding environment to participate in combustion). It can be understood that the sufficient combustion mentioned in this article is relative to the combustion state when relying only on entrained air and the air in the surrounding environment being entrained (that is, relatively more sufficient).

[0055] The inventor found that although sufficient combustion of the fuel gas can be achieved by blowing air, the air blowing causes a relatively high flow rate of the gas ejected from the flame outlet 1231, and the speed of the fuel gas leaving the flame outlet 1231 is greater than the combustion speed of the fuel gas, which easily causes a flame-lifting phenomenon. Therefore, in this embodiment, the air outlet passage 1200 is improved to suppress the flame-lifting phenomenon at the flame outlet 1231. Specifically, the air outlet passage 1200 includes a second flow section 1220 and a third flow section 1230. The third flow section 1230 is arranged downstream of the second flow section 1220, that is, when the gas flows along the air outlet passage 1200, the gas flows through the second flow section 1220 and the third flow section 1230 in sequence. The end of the third flow section 1230 constitutes the flame outlet 1231, and finally ejects from the flame outlet 1231. A stepped surface 1240 is arranged between the second flow section 1220 and the third flow section 1230. The arrangement of the stepped surface 1240 forms an included angle space between the stepped surface 1240 and the second flow section 1220 or the third flow section 1230. When the gas flows through the stepped surface 1240, a vortex will be formed at the corresponding position (included angle space) of the stepped surface 1240. The vortex realizes the pulling of the rapidly flowing gas and plays a role in decelerating the gas, thereby suppressing the flame-lifting phenomenon at the flame outlet 1231 and achieving a good flame-stabilizing effect. By setting like this, not only can the fuel gas ejected from the flame outlet 1231 be in rich-oxygen combustion, but also the flame-lifting phenomenon can be suppressed, which is beneficial to improving the combustion efficiency.

[0056] Combined with Figure 8 and Figure 9 As shown, in some embodiments, the stepped surface 1240 is perpendicular to the inner wall of the second flow section 1220 and the inner wall of the third flow section 1230. By setting like this, the formed included angle space is a right-angle space, thereby strengthening the pulling effect of the formed vortex and further improving the flame-stabilizing effect.

[0057] Combined with Figure 8 and Figure 9 As shown, in some embodiments, the cross-sectional area of the second flow section 1220 is smaller than the cross-sectional area of the third flow section 1230. It can be understood that the cross-sectional area refers to the area of the flow-through cross-section, and the flow-through cross-section is perpendicular to the flow direction of the gas. By designing the cross-sectional area of the third flow section 1230 to be larger, when the gas flows along the air outlet passage 1200 from the second flow section 1220 to the third flow section 1230, the gas flow rate is further slowed down, and combined with the effect of the vortex, the flame-stabilizing effect is further improved.

[0058] Combined with Figures 6 to 9 As shown, in some embodiments, the air outlet passage 1200 includes a first flow section 1210. The first flow section 1210 is arranged upstream of the second flow section 1220, and a corner 1250 is formed at the intersection of the first flow section 1210 and the second flow section 1220.

[0059] Specifically, the gas entering the interior of the burner 100 flows along the gas outlet passage 1200 and finally jets out from the flame outlet 1231. The first flow section 1210 is arranged upstream of the second flow section 1220. Along the gas flow direction, the first flow section 1210, the second flow section 1220, and the third flow section 1230 are arranged in sequence, that is, the gas flows through the first flow section 1210, the second flow section 1220, and the third flow section 1230 in sequence and jets out from the flame outlet 1231. In this embodiment, a corner 1250 is formed by the intersection between the first flow section 1210 and the second flow section 1220. When the gas flows from the first flow section 1210 to the second flow section 1220, it needs to pass through the corner 1250, that is, the gas needs to turn when flowing from the first flow section 1210 to the second flow section 1220, which is beneficial to further uniform mixing and speed reduction of the gas, and improves the uniformity and stability of the gas jetting out from the flame outlet 1231. For example Figure 8 and Figure 9 as shown, the first flow section 1210 extends horizontally, the second flow section 1220 extends vertically, a stepped surface 1240 is provided between the third flow section 1230 and the second flow section 1220, and the third flow section 1230 extends vertically from the second flow section 1220.

[0060] Combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 as shown, in some embodiments, the burner 100 includes a second flame outlet 1320 for jetting the induced air and the fuel gas. That is, the induced air and the fuel gas enter the interior of the burner 100, and then jet out from the interior of the burner 100 through the second flame outlet 1320 and are ignited to form a flame. Similar to the above description, the supply of the fuel gas can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the fuel gas is transmitted along the gas pipeline. The fuel gas flows through the valve body and jets out through the nozzle. The fuel gas jetting out from the nozzle is sprayed into the interior of the burner 100. During the process of the fuel gas jetting into the interior of the burner 100, the induction of air is synchronously realized. In this way, the induced air follows the fuel gas into the interior of the burner 100, and then the induced air and the fuel gas jet out from the second flame outlet 1320.

[0061] The gas ejected from the second burner port 1320 is not sufficient to burn fully relying only on entrained air and entraining the ambient air around. Since the ejected air from the burner port 1231 is blast air, it can provide sufficient oxygen, so that in addition to participating in the combustion of the gas ejected from the burner port 1231, the excess oxygen in the blast air can also be supplemented into the gas ejected from the second burner port 1320 to assist the combustion of the gas ejected from the second burner port 1320. Compared with supplementing secondary air from the surrounding environment by entrainment, the excess oxygen provided by the blast air ejected from the burner port 1231 is more actively supplemented into the gas ejected from the second burner port 1320, making the gas ejected from the second burner port 1320 burn fully (the flame generated by the second burner port 1320 can still entrain the secondary air in the surrounding environment to participate in combustion). Thus, it can be seen that through the above solution, the gas ejected from the burner port 1231 and the second burner port 1320 burns fully, with high combustion efficiency, which is beneficial to improving the thermal efficiency of the gas stove.

[0062] In some embodiments, the flame generated by the second burner port 1320 is suitable for stabilizing the flame of the burner port 1231. Specifically, since the ejected from the second burner port 1320 is entrained air and gas, the entrained air is naturally entrained by injecting gas through a nozzle and does not need to be generated based on a fluid machine. The velocity of the gas leaving the second burner port 1320 is not much different from the combustion velocity of the gas, enabling stable combustion, that is, the flame state formed by the second burner port 1320 is stable. Since the flame formed by the second burner port 1320 is more stable, the flame generated by the second burner port 1320 can be used to stabilize the flame of the burner port 1231.

[0063] That is to say, in addition to being able to heat the cooking utensil, the flame formed by the second burner port 1320 also functions as a flame stabilizing hole / flame stabilizing groove. Generally speaking, since the second burner port 1320 ejects entrained air and gas, the gas ejected from the second burner port 1320 has a more stable combustion state. By adjusting the position, angle or distance between the second burner port 1320 and the burner port 1231, etc., the flame formed by the second burner port 1320 ignites the gas ejected from the burner port 1231 (such as the flame formed by the second burner port 1320 heats the root of the gas ejected from the burner port 1231 to ignite the gas ejected from the burner port 1231). When the gas quickly leaves the burner port 1231, it is ignited by the flame formed by the second burner port 1320, so that the gas quickly leaving the burner port 1231 burns at the burner port 1231, thus suppressing the occurrence of the flame lift phenomenon at the burner port 1231 and playing a role in stabilizing the flame of the burner port 1231, further improving the combustion efficiency.

[0064] Combined with Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6and Figure 7 As shown, in some embodiments, flame outlets 1231 are respectively provided on opposite sides of the second flame outlet 1320. One of the flame outlets 1231 is referred to as the first flame outlet 1310, and the other flame outlet 1231 is referred to as the third flame outlet 1330. The first flame outlet 1310 is farther from the center of the burner 100 relative to the second flame outlet 1320, and the second flame outlet 1320 is farther from the center of the burner 100 relative to the third flame outlet 1330.

[0065] Specifically, the center of the burner 100 refers to the center of the flame outlet range of the burner 100. That is, when observing the burner 100 from top to bottom, the first flame outlet 1310 is farther out relative to the second flame outlet 1320 and the third flame outlet 1330, the third flame outlet 1330 is closer in relative to the first flame outlet 1310 and the second flame outlet 1320, and the second flame outlet 1320 is between the first flame outlet 1310 and the third flame outlet 1330. In this way, the third flame outlet 1330, the second flame outlet 1320, and the first flame outlet 1310 are arranged in sequence in the direction away from the center of the burner 100 (the minimum distance between the first flame outlet 1310 and the center of the burner 100 is greater than the minimum distance between the second flame outlet 1320 and the center of the burner 100, and the minimum distance between the second flame outlet 1320 and the center of the burner 100 is greater than the minimum distance between the third flame outlet 1330 and the center of the burner 100). In some cases, the third flame outlet 1330 is closer to the center of the burner 100 relative to the second flame outlet 1320. At this time, the third flame outlet 1330 can just be at the center position of the burner 100, which is more conducive to the uniform distribution of temperature. Thus, it can be seen that the excess oxygen provided by the blast air ejected from the first flame outlet 1310 and the excess oxygen provided by the blast air ejected from the third flame outlet 1330 are supplemented into the gas ejected from the second flame outlet 1320 from opposite sides of the second flame outlet 1320, and the oxygen supplementation efficiency is higher.

[0066] It can be understood that on the premise that flame outlets 1231 (the first flame outlet 1310, the second flame outlet 1320) are respectively provided on opposite sides of the second flame outlet 1320, the flame generated by the second flame outlet 1320 can stabilize the flame of the flame outlet 1231. It can be that the flame generated by the second flame outlet 1320 stabilizes the flame of the first flame outlet 1310, or the flame generated by the second flame outlet 1320 stabilizes the flame of the third flame outlet 1330, or the flame generated by the second flame outlet 1320 stabilizes the flames of the first flame outlet 1310 and the third flame outlet 1330 simultaneously.

[0067] Combined with Figure 7As shown, in some embodiments, the first burner orifice 1310, the second burner orifice 1320, and the third burner orifice 1330 are on the same horizontal plane. In this way, the distances between the first burner orifice 1310, the second burner orifice 1320, and the third burner orifice 1330 and the cookware are equal respectively, ensuring efficient heating of the cookware and being beneficial to improving the energy efficiency of the gas stove.

[0068] In some embodiments, the second burner orifice 1320 is inclined and open towards the direction where the first burner orifice 1310 is located. Through this setting, it is more convenient for the flame generated by the second burner orifice 1320 to ignite the root of the gas ejected from the first burner orifice 1310, thereby further improving the flame stabilization effect on the first burner orifice 1310. Similarly, the second burner orifice 1320 can also be inclined and open towards the direction where the third burner orifice 1330 is located. Through such a setting, it is more convenient for the flame generated by the second burner orifice 1320 to ignite the root of the gas ejected from the third burner orifice 1330, thereby further improving the flame stabilization effect on the third burner orifice 1330.

[0069] Combined with Figure 7 As shown, in some embodiments, the distance between the first burner orifice 1310 and the second burner orifice 1320 along the radial direction of the burner 100 is not greater than 6 mm, and the distance between the second burner orifice 1320 and the third burner orifice 1330 along the radial direction of the burner 100 is not greater than 6 mm.

[0070] Specifically, with the gas stove installed in the use environment as a reference, at this time the gas stove is generally in a horizontal installation state. The axial direction of the burner 100 is the up - down direction, and the radial direction is the direction passing through the center of the burner 100 and perpendicular to the axial direction. The distance between the first burner orifice 1310 and the second burner orifice 1320 along the radial direction of the burner 100 is L1, and the distance between the second burner orifice 1320 and the third burner orifice 1330 along the radial direction of the burner 100 is L2. L1 and L2 need to satisfy not being greater than 6 mm. For example, L1 and L2 are 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm respectively. By optimizing the positions of the first burner orifice 1310, the second burner orifice 1320, and the third burner orifice 1330 relative to each other, the flame stabilization effect of the flame generated by the second burner orifice 1320 on the first burner orifice 1310 and the second burner orifice 1320 is further improved, and the influence of shape and size is reduced.

[0071] Combined with Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown, in some embodiments, the burner 100 includes a burner cap 1000. The top surface of the burner cap 1000 is a flat surface, and the first burner orifice 1310, the second burner orifice 1320, and the third burner orifice 1330 are arranged on the top surface of the burner cap 1000. By designing the top surface of the burner cap 1000 as a flat surface, it is more convenient to clean the burner cap 1000.

[0072] Specifically, by designing the top surface of the burner cap 1000 as a flat surface, and the top surface of the burner cap 1000 is provided with a first burner port 1310, a second burner port 1320, and a third burner port 1330, so that the first burner port 1310, the second burner port 1320, and the third burner port 1330 are on the same horizontal plane, realizing the flat surface fire output of the burner 100. When the area where the first burner port 1310, the second burner port 1320, and the third burner port 1330 are located (the top surface of the burner cap 1000) gets dirty, it is more convenient to clean.

[0073] Combined with Figures 3 to 7 and Figure 10 、 Figure 11 As shown in the figures, in some embodiments, the burner 100 includes a burner cap 1000. The burner cap 1000 includes a first burner cap 1110, a second burner cap 1120, and a third burner cap 1130. The first burner cap 1110 surrounds the second burner cap 1120, and the second burner cap 1120 surrounds the third burner cap 1130. Thus, an air outlet channel 1200 is provided between the first burner cap 1110 and the second burner cap 1120. The end of the air outlet channel 1200 between the first burner cap 1110 and the second burner cap 1120 forms the first burner port 1310. An air outlet channel 1200 is also provided between the second burner cap 1120 and the third burner cap 1130. The end of the air outlet channel 1200 between the second burner cap 1120 and the third burner cap 1130 forms the second burner port 1320.

[0074] When the first burner port 1310, the second burner port 1320, and the third burner port 1330 are on the same horizontal plane, the top surface of the first burner cap 1110 is a flat surface, the top surface of the second burner cap 1120 is a flat surface, the top surface of the third burner cap 1130 is a flat surface. The first burner port 1310 is provided between the top surfaces of the first burner cap 1110 and the second burner cap 1120. The second burner port 1320 is provided on the top surface of the second burner port 1320. The third burner port 1330 is provided between the top surfaces of the second burner cap 1120 and the third burner cap 1130.

[0075] Combined with Figure 1 、 Figure 3 、 Figure 4 and Figure 6As shown, in some embodiments, the burner 100 includes a burner head 2000, and the burner cap 1000 is disposed on the burner head 2000. For example, the first burner cap 1110 is placed on the burner head 2000 under the action of gravity, the second burner cap 1120 is placed on the burner head 2000 under the action of gravity, and the third burner cap 1130 is placed on the burner head 2000 under the action of gravity. Moreover, the first burner cap 1110 also overlaps with the second burner cap 1120, so that the gas outlet channel 1200 formed between the first burner cap 1110 and the second burner cap 1120 includes a first flow section 1210, a second flow section 1220 and a third flow section 1230. The third burner cap 1130 also overlaps with the first burner cap 1110, so that the gas outlet channel 1200 formed between the second burner cap 1120 and the third burner cap 1130 includes a first flow section 1210, a second flow section 1220 and a third flow section 1230.

[0076] Combined with Figure 12 As shown, the burner head 2000 includes a first cavity 2110, a second cavity 2120 and a third cavity 2130. The first burner port 1310 is in communication with the first cavity 2110, the second burner port 1320 is in communication with the second cavity 2120, and the third burner port 1330 is in communication with the third cavity 2130. The blast air and the fuel gas enter the first cavity 2110 and then are ejected from the first burner port 1310 and ignited to form a flame. The induced air and the fuel gas enter the second cavity 2120 and then are ejected from the second burner port 1320 and ignited to form a flame. The blast air and the fuel gas enter the third cavity 2130 and then are ejected from the third burner port 1330 and ignited to form a flame. Optionally, the first cavity 2110 and the third cavity 2130 can be designed to be connected, so that the blast air and the fuel gas can enter the third cavity 2130 after entering the first cavity 2110, or enter the first cavity 2110 after entering the third cavity 2130. Further, the first cavity 2110 surrounds the second cavity 2120, and the first cavity 2110 and the second cavity 2120 share a common wall. The second cavity 2120 surrounds the third cavity 2130, and the second cavity 2120 and the third cavity 2130 share a common wall, which is beneficial to cost reduction.

[0077] Combined with Figure 1 、 Figure 3 and Figure 4 As shown, in some embodiments, the burner 100 includes a first ejector tube 3100 and a second ejector tube 3200. The first ejector tube 3100 is connected to the burner head 2000 so as to be in communication with the first cavity 2110 or the third cavity 2130. The second ejector tube 3200 is connected to the burner head 2000 so as to be in communication with the second cavity 2120. The intake end 3110 of the first ejector tube 3100 cooperates with a nozzle and is used for receiving blast air. The intake end 3210 of the second ejector tube 3200 cooperates with the nozzle.

[0078] Specifically, the first ejector tube 3100 has a Venturi structure. The air inlet end 3110 of the first ejector tube 3100 is matched with the nozzle, that is, the nozzle is aligned with the air inlet end 3110 of the first ejector tube 3100 to inject fuel gas. At the same time, the blast air enters through the air inlet end 3110 of the first ejector tube 3100, for example, realized by forced blast through the blower 4000. The blast air and the fuel gas are delivered to the first cavity 2110 and the third cavity 2130, and finally ejected from the first burner port 1310 and the third burner port 1330. It can be understood that the blower 4000 can be fixedly connected to the first ejector tube 3100, which is more convenient for the cooperation between the blower 4000 and the air inlet end 3110 of the first ejector tube 3100. The second ejector tube 3200 has a Venturi structure. The air inlet end 3210 of the second ejector tube 3200 is matched with the nozzle, that is, the nozzle is aligned with the air inlet end 3210 of the second ejector tube 3200 to inject fuel gas. At the same time, a negative pressure is formed on the surrounding environment to eject air, and the ejected air and the fuel gas are delivered to the second cavity 2120 for mixing, and finally ejected from the second burner port 1320.

[0079] In some embodiments, the burner 100 includes a plurality of first burner ports 1310. The term "plurality" means two or more, that is, the number of the first burner ports 1310 is at least two. The plurality of first burner ports 1310 are arranged in an annular and alternating manner. For example, the plurality of first burner ports 1310 are arranged in an annular and alternating manner along the circumferential direction of the burner 100. The circumferential direction can be understood as the direction around the center of the burner 100. The gases ejected from the plurality of first burner ports 1310 generate flames, which can achieve large-range heating of the cooking utensils. In addition to the above situation, it can also be, in combination Figure 1 and Figure 2 As shown, in some embodiments, the first burner port 1310 is in the shape of an annular slit. The annular-slit-shaped first burner port 1310 can also achieve large-range heating of the cooking utensils. And when the first burner port 1310 is designed in the shape of an annular slit, the first burner port 1310 is continuous along the circumferential direction of the burner 100. In this way, the excess oxygen in the gas ejected from the first burner port 1310 can increase the contact with the fuel gas ejected from the second burner port 1320, further improving the oxygen supplement effect on the gas ejected from the second burner port 1320.

[0080] In combination Figure 1 and Figure 2As shown, in some embodiments, the burner 100 includes a plurality of second flame outlets 1320. The term "plurality" means two or more, that is, the number of the second flame outlets 1320 is at least two. The plurality of second flame outlets 1320 are arranged alternately in a ring. For example, the plurality of second flame outlets 1320 are arranged alternately in a ring along the circumferential direction of the burner 100. The circumferential direction can be understood as the direction around the center of the burner 100. The plurality of second flame outlets 1320 eject gas to generate flames, which can achieve large-range heating of the cooking utensil. In addition to the above situation, it can also be that, in some embodiments, the second flame outlet 1320 is in the shape of an annular slit, and the second flame outlet 1320 in the shape of an annular slit can also achieve large-range heating of the cooking utensil.

[0081] In some embodiments, the burner 100 includes a plurality of third flame outlets 1330. The term "plurality" means two or more, that is, the number of the third flame outlets 1330 is at least two. The plurality of third flame outlets 1330 are arranged alternately in a ring or densely arranged. In addition to the above situation, it can also be that, in combination Figure 1 and Figure 2 As shown, in some embodiments, the third flame outlet 1330 is in the shape of an annular slit, and the third flame outlet 1330 in the shape of an annular slit is continuous along the circumferential direction of the burner 100. In this way, the excess oxygen in the gas ejected from the third flame outlet 1330 can increase the contact with the gas ejected from the second flame outlet 1320, further improving the oxygen supply effect on the gas ejected from the second flame outlet 1320.

[0082] Since the first flame outlet 1310 is farther from the center of the burner 100 than the second flame outlet 1320, when the first flame outlet 1310 includes a plurality and is arranged in a ring, the plurality of first flame outlets 1310 surround the second flame outlet 1320 (the second flame outlet 1320 can be multiple or in the shape of an annular slit). When the first flame outlet 1310 is in the shape of an annular slit, the first flame outlet 1310 in the shape of an annular slit surrounds the second flame outlet 1320 (the second flame outlet 1320 can be multiple or in the shape of an annular slit). Since the second flame outlet 1320 is farther from the center of the burner 100 than the third flame outlet 1330, when the second flame outlet 1320 includes a plurality and is arranged in a ring, the plurality of second flame outlets 1320 surround the third flame outlet 1330 (the third flame outlet 1330 can be multiple or in the shape of an annular slit). When the second flame outlet 1320 is in the shape of an annular slit, the second flame outlet 1320 in the shape of an annular slit surrounds the third flame outlet 1330 (the third flame outlet 1330 can be multiple or in the shape of an annular slit).

[0083] The second aspect of the present application discloses a gas stove, in combination Figures 1 to 12As shown in the figure, the gas stove includes the above burner 100. The burner 100 includes an air outlet passage 1200. The air outlet passage 1200 includes a second flow section 1220 and a third flow section 1230. The third flow section 1230 is arranged downstream of the second flow section 1220. And a stepped surface 1240 is arranged between the third flow section 1230 and the second flow section 1220. The end of the third flow section 1230 forms a fire outlet 1231. The fire outlet 1231 is used for the blown air and the gas to be ejected.

[0084] The blown air and the gas flow through the air outlet passage 1200 and are finally ejected from the fire outlet 1231. The blown air can provide enough oxygen to make the gas ejected from the fire outlet 1231 in a state of rich-oxygen combustion, so as to realize the full combustion of the gas. On this basis, by setting the second flow section 1220 and the third flow section 1230, and arranging a stepped surface 1240 between the second flow section 1220 and the third flow section 1230, a vortex will be formed at the position where the stepped surface 1240 is located when the gas flows through the stepped surface 1240. The formation of the vortex realizes the pulling of the flowing gas and plays a role in slowing down the flow of the gas, thereby suppressing the occurrence of the flame-lifting phenomenon at the fire outlet 1231 and achieving a flame-stabilizing effect.

[0085] In some embodiments, the gas stove includes a valve body (not shown in the figure). The valve body is used to adjust the gas volume. When the gas supply to the first fire outlet 1310 and the third fire outlet 1330 is interrupted in the valve body, the valve body can maintain the gas supply to the second fire outlet 1320. And at this time, the blower 4000 is still in the working state.

[0086] Specifically, the valve body is a device for adjusting the gas flow rate. The inlet of the valve body is connected to the gas pipeline, and the outlet of the valve body is connected to the nozzle. By the adjustment of the valve body, the gas volume finally leading to the first fire outlet 1310, the second fire outlet 1320, and the third fire outlet 1330 is adjusted. The specific structure of the valve body can refer to the related technology and will not be elaborated in detail here. When the valve body is adjusted until the gas supply to the first fire outlet 1310 and the third fire outlet 1330 is interrupted, the gas supply to the second fire outlet 1320 can still be maintained. And at this time, the blower 4000 is also in the working state. In this way, the air (blown air) forcibly conveyed by the blower 4000 is ejected through the first fire outlet 1310 and the third fire outlet 1330 and supplemented into the gas ejected from the second fire outlet 1320, ensuring that the gas ejected from the second fire outlet 1320 can also be fully combusted when the gas is not ejected through the first fire outlet 1310 and the third fire outlet 1330.

[0087] It can be understood that the blower 4000 can be started synchronously when the gas stove is ignited. No matter how the valve body is adjusted, the blower 4000 still maintains the running state until the gas stove is extinguished and then the blower 4000 is turned off. Of course, other control logics can also be adopted and will not be elaborated one by one here.

[0088] The third aspect of the present application discloses an integrated appliance, which includes the gas stove of the above embodiments. The so-called integrated appliance is a device that integrates a gas stove and the functions of another traditional appliance. For example, at least one of a microwave oven, an oven, a steamer, and a range hood can be integrated with the gas stove to form an integrated appliance. Of course, the integrated appliance is not limited to the appliances listed above. As long as it can achieve more functions when integrated with the gas stove compared to a single gas stove, it can be regarded as an integrated appliance. It can be understood that the gas stove of the integrated appliance in this embodiment adopts the technical solution of the above embodiment, so it has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0089] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A burner (100), characterized in that: The burner (100) comprises an air outlet channel (1200), the air outlet channel (1200) comprises a second flow segment (1220) and a third flow segment (1230) arranged downstream of the second flow segment (1220), a step surface (1240) is arranged between the second flow segment (1220) and the third flow segment (1230), the end of the third flow segment (1230) constitutes a fire outlet (1231), and the fire outlet (1231) is suitable for spraying out fuel gas and blast air.

2. The burner (100) according to claim 1, characterized in that: The step surface (1240) is perpendicular to the inner wall of the second flow section (1220) and the inner wall of the third flow section (1230).

3. The burner (100) according to claim 1, characterized in that: The cross-sectional area of ​​the second flow segment (1220) is smaller than the cross-sectional area of ​​the third flow segment (1230).

4. The burner (100) according to claim 1, characterized in that: The air outlet channel (1200) comprises a first flow segment (1210) arranged upstream of the second flow segment (1220), and the first flow segment (1210) and the second flow segment (1220) intersect to form a corner (1250).

5. The burner (100) according to claim 1, characterized in that: The burner (100) comprises a second burner (1320), wherein the second burner (1320) is suitable for spraying fuel gas and induced air.

6. The burner (100) according to claim 5, characterized in that: The flame generated by the second burner (1320) is suitable for stabilizing the flame of the burner outlet (1231).

7. The burner (100) according to claim 5, characterized in that: The fire outlets (1231) are respectively arranged on two opposite sides of the second fire port (1320), wherein the fire outlet (1231) on one side is defined as a first fire port (1310), and the fire outlet (1231) on the other side is defined as a third fire port (1330); The first burner (1310) is farther away from the center of the burner (100) relative to the second burner (1320), and the second burner (1320) is farther away from the center of the burner (100) relative to the third burner (1330).

8. The burner (100) according to claim 7, characterized in that: The first burner (1310), the second burner (1320) and the third burner (1330) are located in the same horizontal plane.

9. The burner (100) according to claim 8, characterized in that: The second burner (1320) is tilted and opened toward the direction where the first burner (1310) is located; and / or the second burner (1320) is tilted and opened toward the direction where the third burner (1330) is located.

10. The burner (100) according to claim 8, characterized in that The radial distance between the first burner (1310) and the second burner (1320) along the burner (100) is no greater than 6 mm, and the radial distance between the second burner (1320) and the third burner (1330) along the burner (100) is no greater than 6 mm.

11. The burner (100) according to claim 8, characterized in that: The burner (100) comprises a fire cover (1000), the top surface of the fire cover (1000) is provided with the first fire port (1310), the second fire port (1320) and the third fire port (1330), and the top surface of the fire cover (1000) is a plane.

12. The burner (100) according to claim 7, characterized in that: The burner (100) comprises a fire cover (1000), wherein the fire cover (1000) comprises a first fire cover (1110), a second fire cover (1120) and a third fire cover (1130), wherein the first fire cover (1110) surrounds the second fire cover (1120) and an air outlet passage (1200) is arranged between the first fire cover (1110) and the second fire cover (1120), wherein the end of the air outlet passage (1200) between the first fire cover (1110) and the second fire cover (1120) constitutes the first flame port (1310), wherein the second fire cover (1120) surrounds the third fire cover (1130) and an air outlet passage (1200) is arranged between the second fire cover (1120) and the third fire cover (1130), wherein the end of the air outlet passage (1200) between the second fire cover (1120) and the third fire cover (1130) constitutes the third flame port (1330).

13. The burner (100) according to claim 12, characterized in that The burner (100) comprises a burner head (2000), wherein the burner head (2000) is arranged in a first cavity (2110), a second cavity (2120) and a third cavity (2130); the first cavity (2110) surrounds the second cavity (2120) and is arranged with a common wall; the second cavity (2120) surrounds the third cavity (2130) and is arranged with a common wall; the first cavity (2110) and the third cavity (2130) are in communication; the first burner port (1310) and the first cavity (2110) are in communication; the second burner port (1320) and the second cavity (2120) are in communication; and the third burner port (1330) and the third cavity (2130) are in communication.

14. The burner (100) according to claim 13, characterized in that The burner (100) comprises a first ejector tube (3100), a second ejector tube (3200) and a fan (4000); the first ejector tube (3100) is connected to the burner head (2000) to communicate with the first cavity (2110) or the third cavity (2130); the second ejector tube (3200) is connected to the burner head (2000) to communicate with the second cavity (2120); an air inlet end (3110) of the first ejector tube (3100) is suitable for receiving fuel gas and blast air; an air inlet end (3210) of the second ejector tube (3200) is suitable for receiving fuel gas and ejection air; and the fan (4000) is fixedly connected to the first ejector tube (3100) to provide blast air.

15. The burner (100) according to claim 7, characterized in that: The burner (100) comprises a plurality of the first burners (1310), wherein the plurality of the first burners (1310) are alternately arranged in a ring shape and surround the second burner (1320); And / or, the burner (100) comprises a plurality of the second burners (1320), and the plurality of the second burners (1320) are alternately arranged in a ring shape and surround the third burner (1330); And / or, the burner (100) includes a plurality of the third burners (1330).

16. The burner (100) according to claim 7, characterized in that: The first burner (1310) is in the shape of an annular seam and surrounds the second burner (1320); and / or, the second burner (1320) is in the shape of an annular seam and surrounds the third burner (1330); And / or, the third burner (1330) is in the shape of an annular seam.

17. A gas stove, characterized in that: The gas stove comprises the burner (100) according to any one of claims 1 to 16.

18. The gas stove according to claim 17, characterized in that: The gas stove comprises a valve body, which is suitable for adjusting the amount of gas. When the valve body interrupts the gas supply to the first burner (1310) and the third burner (1330) of the burner (100), the valve body is suitable for maintaining the gas supply to the second burner (1320) of the burner (100), and the fan (4000) of the gas stove is in an operating state to provide blast air.

19. An integrated electrical appliance, characterized in that: The integrated electrical appliance comprises the gas stove according to claim 17 or 18.

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