Ejecting structure, combustor and stove

Abstract

The utility model discloses an injection structure, a burner and a stove. The injection structure comprises an injection main body and an air adjusting assembly, the injection main body comprises a nozzle, a first injection pipe and a second injection pipe, the first injection pipe is provided with a first injection channel, and the second injection pipe is provided with a second injection channel; a first air channel is formed between the nozzle and the air inlet of the first injection pipe, and the first air channel is communicated with the first injection channel; a second air channel is formed between the air outlet of the first injection pipe and the air inlet of the second injection pipe, and the second air channel is communicated with the second injection channel; the air adjusting assembly is movably arranged on the ejection body and used for adjusting the amount of air entering the first ejection channel from the first air channel and / or used for adjusting the amount of air entering the second ejection channel from the second air channel. The air injection capacity of an existing injection structure can be improved, so that the combustion efficiency of the combustor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an ejection structure, a burner and a stove. Background Art

[0002] In gas appliances such as gas cookers, the burner is a core component. The burner includes an ejector structure. In the related art, the existing ejector structure has poor air ejection capability and cannot be adjusted according to different gas volumes. It has low applicability and affects the combustion efficiency of the burner. Utility Model Content

[0003] The main purpose of the utility model is to provide an ejection structure, a burner and a stove, aiming to improve the air ejection capability of the existing ejection structure so as to improve the combustion efficiency of the burner.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes an ejection structure, comprising:

[0005] An ejection body comprises a nozzle, a first ejection tube and a second ejection tube, wherein the first ejection tube has a first ejection channel, and the second ejection tube has a second ejection channel; a first air channel is formed between the nozzle and an air inlet of the first ejection tube, and the first air channel is communicated with the first ejection channel; a second air channel is formed between an air outlet of the first ejection tube and an air inlet of the second ejection tube, and the second air channel is communicated with the second ejection channel; and

[0006] An air regulating component is movably arranged on the ejection body, and is used to regulate the amount of air entering the first ejection channel from the first air channel and / or to regulate the amount of air entering the second ejection channel from the second air channel.

[0007] In one embodiment, the air regulating component includes a first air regulating member and a first limiting member, the first air regulating member can be movably disposed on the first ejection tube or the second ejection tube, the distance between the first air regulating member and the air inlet of the second air channel is adjustable, the first limiting member is disposed on the first ejection tube or the second ejection tube and cooperates with the first air regulating member to limit the distance between the first air regulating member and the air inlet of the second air channel.

[0008] In one embodiment, the first air regulating member is provided with a first screw hole which penetrates the first air regulating member along the axial direction of the first ejector tube, the outer peripheral wall of the first ejector tube is provided with a first external thread, and the first air regulating member is threadedly connected to the first external thread of the first ejector tube through the first screw hole.

[0009] In one embodiment, the first limiting member is elastic, and is used to apply a thrust force to the first air regulating member to limit the axial movement of the first air regulating member along the first ejector tube.

[0010] In one embodiment, the first limiting member is arranged on a side of the first air regulating member facing away from the air inlet of the second air channel, one end of the first limiting member abuts against the first air regulating member, and the other end of the first limiting member abuts against or is connected to the first ejection pipe.

[0011] In one embodiment, the first position-limiting member is sleeved on the first ejection tube, and the first position-limiting member, the first ejection tube and the first air regulating member can be separated from each other;

[0012] And / or, the first limiting member is a spring.

[0013] In one embodiment, the nozzle has an air jet outlet, the minimum inner diameter of the air jet outlet is D1, the minimum inner diameter of the second injection channel is D2, the minimum inner diameter of the first injection channel is D3, and D1, D2 and D3 satisfy: D1<D3<D2.

[0014] In one embodiment, D1 satisfies: 5 mm ≤ D1 ≤ 10 mm;

[0015] And / or, D2 satisfies: 10 mm ≤ D2 ≤ 20 mm;

[0016] And / or, D3 satisfies: 10mm≤D3≤15mm.

[0017] In one embodiment, the jet outlet of the nozzle is arranged inside the air inlet of the first ejector pipe to form the first air channel, and the maximum inner diameter of the first air channel is D4, and D4 satisfies: 30mm≤D4≤35mm;

[0018] And / or, the air outlet of the first ejector pipe is arranged on the inner side of the air inlet of the second ejector pipe to form the second air channel, and the maximum inner diameter of the second air channel is D5, and D5 satisfies: 30mm≤D5≤40mm.

[0019] In one embodiment, the air regulating assembly includes a second air regulating member and a second limiting member, the second air regulating member can be movably disposed on the nozzle or the first ejection pipe, the distance between the second air regulating member and the air inlet of the first air channel is adjustable, the second limiting member is disposed on the nozzle or the first ejection pipe and cooperates with the second air regulating member to limit the distance between the second air regulating member and the air inlet of the first air channel.

[0020] In one embodiment, the second air regulating member is provided with a second screw hole penetrating the second air regulating member along the axial direction of the nozzle, the outer peripheral wall of the nozzle is provided with a second external thread, and the second air regulating member is threadedly connected to the second external thread of the nozzle through the second screw hole.

[0021] In one embodiment, the second limiting member is elastic, and is used to apply a thrust force to the second air regulating member to limit the axial movement of the second air regulating member along the nozzle;

[0022] And / or, the second position limiting member is arranged on the side of the second air regulating member facing away from the air inlet of the first air channel, one end of the second position limiting member abuts against the second air regulating member, and the other end of the second position limiting member abuts against or is connected to the nozzle.

[0023] In one embodiment, the ejector body also includes a connecting piece, one end of the connecting piece is connected to the first ejector tube, and the other end of the connecting piece is connected to the second ejector tube. The connecting piece is provided with an indicator part, and the indicator part is used to indicate the position of the air regulating assembly at the corresponding air intake volume.

[0024] In one embodiment, the connecting member includes a connecting column, the connecting column is arranged at the air inlet of the second ejector tube, and the indicating portion is arranged on the connecting column; the connecting column and the indicating portion are extended along the axial direction of the first ejector tube;

[0025] And / or, the connecting column and the second ejector tube are an integral structure, and the air regulating assembly and the indicating portion are spaced apart.

[0026] In one embodiment, the indicating portion includes at least one of an indicating groove, an indicating line, and an indicating protrusion;

[0027] And / or, the air regulating assembly is provided with an anti-slip portion.

[0028] The utility model also provides a burner, which comprises the ejection structure as described above.

[0029] In one embodiment, the burner includes an external injection structure for supplying gas to the outer ring of the burner head and an internal injection structure for supplying gas to the inner ring of the burner head, and at least one of the external injection structure and the internal injection structure is the injection structure.

[0030] The utility model also provides a stove, which comprises the burner as described above.

[0031] The injection structure of the utility model includes an injection body and an air regulating component. The gas sprayed from the nozzle can be mixed with the air entering from the first air channel in the first injection channel first, and then mixed with the air entering from the second air channel again in the second injection channel after being injected by the first injection pipe. The air regulating component can adjust the amount of air entering the first injection channel from the first air channel and / or can adjust the amount of air entering the second injection channel from the second air channel. In this way, the injection structure introduces air twice, which improves the ability of the injection structure to inject air. The air regulating component can adjust the mixing ratio of the gas and air by adjusting the air intake amount, so that the gas can be fully mixed with the air, thereby improving the combustion efficiency of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of an embodiment of the injection structure of the utility model applied to a burner;

[0034] Figure 2 for Figure 1 Schematic diagram of the structure after the structure is decomposed;

[0035] Figure 3 for Figure 1 A cross-sectional view of the structure in FIG.

[0036] Figure 4 for Figure 3 Schematic diagram of some structures in ;

[0037] Figure 5 for Figure 3 Schematic diagram of some structures in ;

[0038] Figure 6 for Figure 1 A cross-sectional view of a portion of the structure.

[0039] Description of Figure Numbers:

[0040] Label name Label name 10 Ejection structure 131 Instruction Department 100 Ejection subject 132 Connecting column 110 The first ejector tube 140 Mounting parts 111 The first ejection channel 141 Mounting Through Holes 112 First air channel 200 Air conditioning components 113 First external thread 210 First air adjustment 120 The second ejector tube 211 First screw hole 121 The second ejection channel 220 The first stopper 122 Second air channel 20 Burner 130 Connectors 21 Burner

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0045] The utility model provides an ejection structure, a burner comprising the ejection structure and a stove comprising the burner. The ejection structure of the utility model has a strong ability to eject air and can improve the combustion efficiency of the burner.

[0046] See also Figures 1 to 6 In one embodiment of the ejection structure 10 of the utility model, the ejection structure 10 includes an ejection body 100 and an air adjustment assembly 200. The ejection body 100 includes a nozzle (not shown), a first ejection tube 110 and a second ejection tube 120. The first ejection tube 110 has a first ejection channel 111, and the second ejection tube 120 has a second ejection channel 121. A first air channel 112 is formed between the nozzle and the air inlet of the first ejection tube 110, and the first air channel 112 is communicated with the first ejection channel 111. A second air channel 122 is formed between the air outlet of the first ejection tube 110 and the air inlet of the second ejection tube 120, and the second air channel 122 is communicated with the second ejection channel 121 (as shown in FIG. 1 ). Figure 3and Figure 4 As shown); the air regulating component 200 can be movably arranged on the injection body 100, and the air regulating component 200 is used to adjust the amount of air entering the first injection channel 111 from the first air channel 112 and / or to adjust the amount of air entering the second injection channel 121 from the second air channel 122.

[0047] It is understandable that the ejection structure 10 can be applied to the burner 20, and the burner 20 can be a gas burner, which can be applied to household appliances such as gas stoves, gas water heaters and gas ovens as a thermal energy device. Of course, the application scenario type in the utility model does not limit the ejection structure 10 and the burner 20. The stove includes a burner 20, a panel, a knob and a burner head 21. The burner 20 and the knob can be embedded on the panel, and the burner head 21 is located at the upper part of the burner 20 and exposed from the panel. The knob is used to ignite or turn off the gas in the burner 20, so that the gas at the burner head 21 of the burner 20 is ignited to form a flame or the gas is cut off to extinguish the flame. Among them, the ejection structure 10, as the core component of the burner 20, directly affects the combustion performance of the gas, which will be highlighted below.

[0048] like Figure 1 and Figure 2 As shown, the ejection structure 10 includes an ejection body 100 and an air adjustment assembly 200. The ejection body 100 includes a nozzle, a first ejection tube 110 and a second ejection tube 120. The nozzle and the first ejection tube 110 are detachably connected. The first ejection tube 110 and the second ejection tube 120 can be arranged at intervals, and of course, they can also be connected by a connecting piece 130, which is not specifically limited here. The air regulating component 200 can be movably provided on the ejector body 100, wherein the position of the air regulating component 200 on the ejector body 100 is not limited, for example but not limited to: the air regulating component 200 can be movably provided on the nozzle; or, the air regulating component 200 can be movably provided on the first ejector tube 110; or, the air regulating component 200 can be movably provided on the second ejector tube 120; or, the air regulating component 200 can be movably provided on the first ejector tube 110 and the second ejector tube 120; or, the air regulating component 200 can be movably provided on the nozzle and the first ejector tube 110; or, the air regulating component 200 can be movably provided on the nozzle and the second ejector tube 120.

[0049] Further, the first ejector tube 110 and / or the second ejector tube 120 of the ejector body 100 can be a venturi tube. The principle of the venturi tube is that the gas or liquid flows in the tube, and the dynamic pressure reaches the maximum value and the static pressure reaches the minimum value at the narrowest part of the pipe cross section. The speed of the gas or liquid increases due to the reduction of the cross-sectional area of ​​the channel, and the static pressure of the gas or liquid reaches the minimum value at the cross section, thereby forming a pressure difference with the outside world. Due to the effect of the pressure difference, foreign substances can be adsorbed when they approach this area. By setting the first ejector tube 110 and / or the second ejector tube 120 as a venturi tube, it is beneficial to improve the ability of the ejection structure 10 to eject air, thereby improving the combustion efficiency of the burner 20.

[0050] Furthermore, for ease of understanding, Figure 4 and Figure 6 The solid arrow in the figure indicates the direction of gas flow, and the dotted arrow indicates the direction of air flow. The gas is sprayed toward the first ejector pipe 110 through the nozzle, and the gas flows in the first ejector channel 111 to form a negative pressure. A first air channel 112 is formed between the nozzle and the air inlet of the first ejector pipe 110. The outside air is sucked into the first air channel 112 under the action of the negative pressure and then preliminarily mixed with the gas in the first ejector channel 111. Then, the preliminarily mixed gas continues to be ejected from the first ejector channel 111 and enters the second ejector channel 121. The preliminarily mixed gas flows in the second ejector channel 121 to form a negative pressure. A second air channel 122 is formed between the air outlet of the first ejector pipe 110 and the air inlet of the second ejector pipe 120. The outside air is sucked into the second air channel 122 under the action of the negative pressure and then mixed again with the preliminarily mixed gas in the second ejector channel 121. This solution improves the air injection capability of the injection structure 10 by introducing air twice, so that the gas and air are fully mixed. The fully mixed gas and air are beneficial to improving the combustion efficiency of the burner 20.

[0051] Furthermore, in the process of mixing the gas and the air, the air regulating component 200 can adjust the air intake. There are many ways in which the air regulating component 200 can be movably arranged on the ejection body 100, such as but not limited to: the air regulating component 200 adjusts the distance between the first air channel 112 and / or the second air channel 122 by sliding, thereby adjusting the air intake; or, the air regulating component 200 adjusts the size of the air inlet of the first air channel 112 and / or the size of the air inlet of the second air channel 122 by rotating, thereby adjusting the air intake; or, the air regulating component 200 adjusts the distance between the first air channel 112 and / or the second air channel 122 by threaded connection, thereby adjusting the air intake. It can be seen that by adjusting the amount of air entering the first injection channel 111 from the first air channel 112 and / or adjusting the amount of air entering the second injection channel 121 from the second air channel 122 through the air adjustment component 200, the mixing ratio of the gas and air sprayed from the nozzle can be controlled, which is beneficial to improving the uniformity of the mixing of the gas and air, thereby improving the combustion efficiency of the burner 20.

[0052] The ejection structure 10 of the utility model includes an ejection body 100 and an air regulating assembly 200. The gas ejected from the nozzle can first be mixed with the air entering from the first air channel 112 in the first ejection channel 111, and then be mixed with the air entering from the second air channel 122 in the second ejection channel 121 after being ejected by the first ejection pipe 110. The air regulating assembly 200 can adjust the amount of air entering the first ejection channel 111 from the first air channel 112 and / or can adjust the amount of air entering the second ejection channel 121 from the second air channel 122. In this way, the ejection structure 10 introduces air twice, thereby improving the air ejection ability of the ejection structure 10. The air regulating assembly 200 can adjust the ratio of the gas and air by adjusting the air intake so that the gas can be fully mixed with the air, thereby improving the combustion efficiency of the burner 20.

[0053] See also Figure 2 and Figure 3 In one embodiment, the air regulating component 200 includes a first air regulating member 210 and a first limiting member 220, the first air regulating member 210 can be movably disposed on the first ejection tube 110 or the second ejection tube 120, the distance between the first air regulating member 210 and the air inlet of the second air channel 122 is adjustable, the first limiting member 220 is disposed on the first ejection tube 110 or the second ejection tube 120 and cooperates with the first air regulating member 210 to limit the distance between the first air regulating member 210 and the air inlet of the second air channel 122.

[0054] It is understandable that the installation position of the first air regulating member 210 is not limited. For example, the first air regulating member 210 may be movably disposed on the first ejection pipe 110, and the distance between the first air regulating member 210 and the air inlet of the second air passage 122 may be adjustable; or, the first air regulating member 210 may be movably disposed on the air inlet end of the second ejection pipe 120, and the distance between the first air regulating member 210 and the air inlet of the second air passage 122 may be adjustable. The first air regulating member 210 and the air inlet end of the second ejection pipe 120 form an open air inlet. When the first air regulating member 210 moves to a distance closer to the air inlet of the second air passage 122, the area of ​​the air inlet is reduced, thereby reducing the amount of air entering the second ejection passage 121 from the second air passage 122; when the first air regulating member 210 moves to a distance farther from the air inlet of the second air passage 122, the area of ​​the air inlet is increased, thereby increasing the amount of air entering the second ejection passage 121 from the second air passage 122.

[0055] Further, the manner in which the first position-limiting member 220 and the first air regulating member 210 are limited is not limited, including but not limited to: limiting by abutment, limiting by a snap-fit ​​structure, or limiting by a screw-lock structure, and the first position-limiting member 220 only needs to be able to limit the distance between the first air regulating member 210 and the air inlet of the second air passage 122. The position of the first air regulating member 210 is limited by the first position-limiting member 220, ensuring the stability of the first air regulating member 210 moving to the corresponding position. After the injection structure 10 is assembled, it will be tested. During the test, the position of the first air regulating member 210 will be adjusted to detect the amount of air entering the second injection channel 121 from the second air channel 122 and verify the optimal mixing ratio of the gas and air sprayed from the nozzle. After the verification is completed, the first air regulating member 210 will be adjusted to the corresponding position according to the amount of gas normally sprayed from the nozzle, and the position of the first air regulating member 210 will be limited by the first limit member 220 to avoid the situation where the position of the first air regulating member 210 changes during the subsequent assembly, transportation, installation and use of the burner 20, thereby ensuring that the first air regulating member 210 is in the optimal position on the air regulating assembly 200 and the gas and air are more fully mixed.

[0056] It can be seen that the first air regulating member 210 of the present scheme can reciprocate relative to the air inlet end of the second air channel 122 to change the air inlet area formed by the first air regulating member 210 and the air inlet end of the second ejector tube 120, thereby adjusting the air intake volume. The first limiting member 220 limits the first air regulating member 210 to a corresponding position, so that the air regulating component 200 can stably adjust the air intake volume. The structure of the air regulating component 200 is simple.

[0057] See also Figure 2In one embodiment, the first air regulating member 210 is provided with a first screw hole 211 which penetrates the first air regulating member 210 along the axial direction of the first ejection tube 110, and the outer peripheral wall of the first ejection tube 110 is provided with a first external thread 113, and the first air regulating member 210 is threadedly connected to the first external thread 113 of the first ejection tube 110 through the first screw hole 211.

[0058] It is understandable that the specific shape of the first air regulating member 210 is not limited. Considering the compact structure arrangement of the ejection structure 10, in one embodiment, the first air regulating member 210 is arranged in a disc shape, specifically in a circular disc shape. A first external thread 113 is provided on the outer peripheral wall of the air outlet end of the first ejection tube 110, and a first screw hole 211 adapted to the first external thread 113 is provided on the first air regulating member 210. The first external thread 113 is threadedly connected with the first screw hole 211, thereby improving the connection stability. By moving the first air regulating member 210, the first air regulating member 210 can be reciprocated along the axial direction of the first ejection tube 110, thereby adjusting the air inlet area formed by the first air regulating member 210 and the air inlet end of the second ejection tube 120, thereby achieving the adjustment of the air intake amount. The first air regulating member 210 controls the air intake amount by threaded connection, which has a simple structure and convenient operation.

[0059] In one embodiment, the first stopper 220 is elastic, and is used to apply a thrust to the first air regulating member 210 to limit the axial movement of the first air regulating member 210 along the first ejection tube 110. It is understandable that the first stopper 220 can be elastically deformed under the action of an external force, and apply a thrust to the first air regulating member 210; or, the first stopper 220 is elastically deformed under the extrusion of the first air regulating member 210, and applies a thrust to the first air regulating member 210, and the specific details are not limited here. The first stopper 220 can be arranged on the side of the first air regulating member 210 facing the air inlet of the second air channel 122, and the first stopper 220 can also be arranged on the side of the first air regulating member 210 facing away from the air inlet of the second air channel 122. As for the direction in which the first limiting member 220 applies the thrust force to the first air regulating member 210, it can be along the axial direction of the first ejector tube 110, or along the radial direction of the first ejector tube 110; or it can be in a direction forming an angle with the axial direction of the first ejector tube 110. There is no specific limitation on this. It is only necessary that the first limiting member 220 can abut against the first air regulating member 210 and limit the axial movement of the first air regulating member 210 along the first ejector tube 110.

[0060] In one embodiment, the outer diameter of the first air regulating member 210 is not less than the inner diameter of the air inlet of the second air passage 122. This arrangement allows the first air regulating member 210 to completely cover the air inlet of the second air passage 122 when it is close to the air inlet of the second air passage 122, which is beneficial to expanding the range of the air intake volume regulated by the first air regulating member 210.

[0061] See also Figure 3 and Figure 4 In one embodiment, the first limiting member 220 is arranged on the side of the first air regulating member 210 facing away from the air inlet of the second air channel 122, one end of the first limiting member 220 abuts against the first air regulating member 210, and the other end of the first limiting member 220 abuts against or is connected to the first ejection tube 110.

[0062] It can be understood that the first limit member 220 can be extended along the axial direction of the first ejection tube 110, and the first limit member 220 is arranged between the first air regulating member 210 and the outer wall of the first ejection tube 110. When the first air regulating member 210 is rotated, the first air regulating member 210 moves close to the first limit member 220 and squeezes the first limit member 220, the first limit member 220 is elastically deformed by the squeezing and has an elastic force. The elastic force acts on the first air regulating member 210, that is, a thrust force is applied to the first air regulating member 210, thereby limiting the first air regulating member 210 from rotating and moving along the axial direction of the first ejection tube 110, so that the first air regulating member 210 can be stably arranged on the first ejection tube 110.

[0063] See also Figures 3 to 6 In one embodiment, the first position limiting member 220 is sleeved on the first ejector tube 110, and the first position limiting member 220, the first ejector tube 110 and the first air regulating member 210 can be separately arranged. In this way, the first position limiting member 220 is a single part, and the first position limiting member 220 is installed in a sleeved manner on the first ejector tube 110, which is conducive to improving the convenience of assembly and disassembly of the first position limiting member 220.

[0064] In one embodiment, the first position-limiting member 220 is a spring, which simplifies the structure of the first position-limiting member 220. Of course, in other embodiments, the first position-limiting member 220 may also be an elastic sleeve, etc., which is not limited here.

[0065] See also Figures 4 to 6 In one embodiment, the nozzle has an air jet outlet, the minimum inner diameter of the air jet outlet is D1, the minimum inner diameter of the second injection channel 121 is D2, the minimum inner diameter of the first injection channel 111 is D3, and D1, D2 and D3 satisfy: D1<D3<D2.

[0066] It can be understood that the minimum inner diameter D3 of the first ejection channel 111 is greater than the minimum inner diameter D1 of the jet outlet, so that the inner diameter of the first ejection channel 111 is larger, that is, the space of the first mixing chamber is larger, which is conducive to the preliminary mixing of the gas ejected from the nozzle and the air entering from the first air channel 112 in the first ejection channel 111, thereby improving the uniformity of the preliminary mixed gas; and the minimum inner diameter D2 of the second ejection channel 121 is greater than the minimum inner diameter D3 of the first ejection channel 111, so that the inner diameter of the second ejection channel 121 is larger, that is, the space of the second mixing chamber is larger, which is conducive to the preliminary mixed gas and the air entering from the second air channel 122 in the second ejection channel 121. Fully mixed, improve the uniformity of the mixing of gas and air. It can be seen that this solution introduces air and gas to be fully mixed twice, and the fully mixed gas and air are conducive to improving the combustion efficiency of the burner 20.

[0067] In one embodiment, the D1 satisfies: 5 mm ≤ D1 ≤ 10 mm; and / or, the D2 satisfies: 10 mm ≤ D2 ≤ 20 mm; and / or, the D3 satisfies: 10 mm ≤ D3 ≤ 15 mm.

[0068] It is understandable that the specific values ​​of D1, D2 and D3 are not limited, and only need to satisfy D1<D3<D2. D1 can be 5mm, or 8mm, or 10mm, etc. D2 can be 10mm, or 15mm, or 20mm, etc. D3 can be 10mm, or 12mm, or 15mm, etc. By limiting the specific values ​​of D1, D2 and D3, the gas and air can have a better mixing ratio, thereby improving the combustion efficiency of the burner 20.

[0069] In one embodiment, the jet outlet of the nozzle is disposed inside the air inlet of the first ejector tube 110 to form the first air channel 112. The maximum inner diameter of the first air channel 112 is D4, and D4 satisfies: 30 mm ≤ D4 ≤ 35 mm.

[0070] And / or, the air outlet of the first ejector tube 110 is arranged inside the air inlet of the second ejector tube 120 to form the second air channel 122, and the maximum inner diameter of the second air channel 122 is D5, and D5 satisfies: 30mm≤D5≤40mm.

[0071] It is understandable that the specific value of D4 is not limited, and may be 30 mm, 32 mm, 35 mm, etc. By limiting the value of the maximum inner diameter D4 of the first air channel 112 and the value of the minimum inner diameter D1 of the jet outlet, the gas ejected from the nozzle and the air entering from the first air channel 112 can be preliminarily mixed evenly in the first ejection channel 111, ensuring that the preliminarily mixed gas has a good mixing ratio.

[0072] Furthermore, the specific value of D5 is not limited, and may be 30 mm, or 32 mm, or 35 mm, or 40 mm, etc. By limiting the value of the maximum inner diameter D5 of the second air channel 122 and simultaneously limiting the value of the minimum inner diameter D3 of the first ejection channel 111, the preliminarily mixed gas and the air entering from the second air channel 122 can be fully mixed in the second ejection channel 121, ensuring that the gas and air have a good mixing ratio in the second ejection channel 121, and improving the uniformity of the mixing of the gas and air.

[0073] In one embodiment, the air regulating component 200 includes a second air regulating member and a second limiting member (not shown), wherein the second air regulating member can be movably disposed on the nozzle or the first ejection pipe 110, and the distance between the second air regulating member and the air inlet of the first air channel 112 is adjustable, and the second limiting member is disposed on the nozzle or the first ejection pipe 110 and cooperates with the second air regulating member to limit the distance between the second air regulating member and the air inlet of the first air channel 112.

[0074] It is understandable that the installation position of the second air regulating member is not limited. For example, the second air regulating member may be movably disposed on the nozzle, and the distance between the second air regulating member and the air inlet of the first air channel 112 may be adjustable; or, the second air regulating member may be movably disposed at the air inlet end of the first ejector tube 110, and the distance between the second air regulating member and the air inlet of the first air channel 112 may be adjustable. The structure of the second air regulating member may be the same as or similar to that of the first air regulating member 210, and its working principle may be set with reference to the aforementioned first air regulating member 210; the structure of the second stopper may be the same as or similar to that of the first stopper 220, and its working principle may be set with reference to the aforementioned first stopper 220, and will not be described one by one here.

[0075] The second air regulating member of the present scheme can reciprocate relative to the air inlet end of the first air channel 112 to change the air inlet area formed by the nozzle and the air inlet end of the first ejector tube 110, thereby adjusting the air intake volume. The second limiting member limits the second air regulating member to a corresponding position, so that the air regulating component 200 can stably adjust the air intake volume. The structure of the air regulating component 200 is simple.

[0076] In one embodiment, the second air regulating member is provided with a second screw hole (not shown) penetrating the second air regulating member along the axial direction of the nozzle, and the outer peripheral wall of the nozzle is provided with a second external thread. The second air regulating member is threadedly connected to the second external thread of the nozzle through the second screw hole.

[0077] It is understandable that the specific shape of the second air regulating member is not limited. Considering the compact structural arrangement of the ejection structure 10, in one embodiment, the second air regulating member is arranged in a disc shape, specifically in a circular disc shape. The second air regulating member is provided with a second screw hole adapted to the second external thread, and the second external thread is threadedly connected to the second screw hole, thereby improving the connection stability. By moving the second air regulating member, the second air regulating member can be reciprocated along the axial direction of the nozzle, thereby adjusting the air inlet area formed by the second air regulating member and the air inlet end of the first ejection tube 110, thereby achieving the adjustment of the air intake amount. The second air regulating member uses a threaded connection to control the air intake amount, which has a simple structure and is easy to operate.

[0078] In one embodiment, the second position-limiting member is elastic, and the second position-limiting member is used to apply a thrust to the second air regulating member to limit the axial movement of the second air regulating member along the nozzle. It is understandable that the second position-limiting member can be a spring or other elastic member, and the second position-limiting member can be elastically deformed under the action of an external force, and apply a thrust to the second air regulating member; or, the second position-limiting member is elastically deformed under the extrusion of the second air regulating member, and applies a thrust to the second air regulating member, which is not specifically limited here. As for the direction in which the second position-limiting member applies the thrust to the second air regulating member, it can be along the axial direction of the nozzle, or along the radial direction of the nozzle; or it can be a direction that forms an angle with the axial direction of the nozzle, which is not specifically limited, and it is only necessary that the second position-limiting member can abut against the second air regulating member and limit the axial movement of the second air regulating member along the nozzle.

[0079] In one embodiment, the outer diameter of the second air regulating member is not less than the inner diameter of the air inlet of the first air passage 112. This arrangement allows the second air regulating member to completely cover the air inlet of the first air passage 112 when it is close to the air inlet of the first air passage 112, which is beneficial to expanding the range of the air intake volume regulated by the second air regulating member.

[0080] In one embodiment, the second stopper is arranged on the side of the second air regulating member facing away from the air inlet of the first air passage 112, one end of the second stopper abuts against the second air regulating member, and the other end of the second stopper abuts against or is connected to the nozzle. In this arrangement, when the second air regulating member is rotated by turning, the second air regulating member moves close to the second stopper and squeezes the second stopper, the second stopper is elastically deformed by the squeezing and has an elastic force, and the elastic force acts on the second air regulating member, that is, applies a thrust force to the second air regulating member, thereby limiting the second air regulating member from rotating and moving along the axial direction of the nozzle, so that the second air regulating member can be stably arranged on the nozzle.

[0081] In one embodiment, the second position limiting member is sleeved on the nozzle, and the second position limiting member, the nozzle and the second air regulating member can be separated from each other. In this way, the second position limiting member is a single part, and the second position limiting member is installed in a sleeved manner on the nozzle, which is conducive to improving the convenience of assembly and disassembly of the second position limiting member.

[0082] In one embodiment, the second limiting member is a spring, which simplifies the structure of the second limiting member. Of course, in other embodiments, the second limiting member can also be an elastic sleeve, etc., which is not limited here.

[0083] See also Figures 2 to 5 In one embodiment, the ejection body 100 further includes a connecting member 130, one end of the connecting member 130 is connected to the first ejection tube 110, and the other end of the connecting member 130 is connected to the second ejection tube 120. The connecting member 130 is provided with an indicating portion 131, and the indicating portion 131 is used to indicate the position of the air regulating assembly 200 at the corresponding air intake volume.

[0084] It is understandable that the first ejector tube 110 and the second ejector tube 120 are connected by the connector 130, so as to form a second air passage 122 between the air outlet of the first ejector tube 110 and the air inlet of the second ejector tube 120. The connector 130 can be spaced apart from the air regulating assembly 200, so as to facilitate the movement of the air regulating assembly 200 on the ejector body 100.

[0085] Furthermore, the air regulating assembly 200 can be movably arranged on the ejection body 100 to adjust the air intake volume. The air regulating assembly 200 corresponds to different air intake volumes at different positions. The connecting member 130 is provided with an indicator 131, which can intuitively indicate the position of the air regulating assembly 200 at the corresponding air intake volume, so that the air regulating assembly 200 can adjust the air intake volume and improve the applicability.

[0086] In one embodiment, the connecting member 130 includes a connecting column 132, the connecting column 132 is arranged at the air inlet of the second ejector tube 120, and the indicating portion 131 is arranged on the connecting column 132; the connecting column 132 and the indicating portion 131 are extended along the axial direction of the first ejector tube 110; and / or the connecting column 132 and the second ejector tube 120 are an integral structure, and the air adjustment assembly 200 and the indicating portion 131 are spaced apart.

[0087] It can be understood that the connecting column 132 and the indicating portion 131 have the same extension direction and are both extended along the axial direction of the first ejector tube 110, so that the adjustment component can reciprocate along the axial direction of the first ejector tube 110 to adjust the air intake amount, which is beneficial to simplify the movement mode of the adjustment component and optimize the structure.

[0088] Furthermore, the connecting column 132 and the second ejector tube 120 are an integrated structure, which reduces the number of parts and improves the convenience of assembling and disassembling the first ejector tube 110 and the second ejector tube 120. In addition, the air regulating assembly 200 and the indicator 131 are arranged at intervals, and the indicator 131 does not interfere with the operation of the air regulating assembly 200, thereby improving the reliability of the ejection mechanism.

[0089] In one embodiment, the indicator portion 131 includes at least one of an indicator groove, an indicator line, and an indicator protrusion. It is understood that the specific manner in which the indicator portion 131 indicates the position of the air regulating assembly 200 at the corresponding air intake volume is not limited, for example, by providing a groove-shaped structure for indication; or by providing an indicator line for indication, the indicator line can specifically be a scale line; or by providing a protrusion for indication, which is not specifically limited here.

[0090] In one embodiment, an anti-skid portion is provided on the air regulating component 200. It is understandable that the anti-skid portion can be an anti-skid groove or an anti-skid protrusion, and the anti-skid portion increases the friction resistance required to move the air regulating component 200, thereby avoiding the occurrence of slipping when the air regulating component 200 is moved.

[0091] See also Figure 1 and Figure 2In one embodiment, the ejection body 100 further includes a mounting member 140, the mounting member 140 is connected to the first ejection tube 110, the mounting member 140 is provided with a mounting through hole 141 communicating with the first ejection channel 111, the nozzle is provided on the mounting member 140, and the jet outlet of the nozzle is communicated with the first ejection channel 111 through the mounting through hole 141. It can be understood that the mounting member 140 can be provided on the inner side of the air inlet of the first ejection tube 110 to form the first air channel 112. The mounting through hole 141 can be located in the middle of the air inlet of the first ejection tube 110, and the mounting through hole 141 facilitates the insertion of the jet end of the nozzle, thereby improving the convenience and stability of the nozzle installation.

[0092] The utility model further proposes a burner 20, which includes the ejection structure 10 as described above. The specific structure of the ejection structure 10 refers to the above embodiment. Since the burner 20 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0093] In one embodiment, the burner 20 includes an external injection structure for supplying gas to the outer ring of the burner head and an internal injection structure for supplying gas to the inner ring of the burner head, and at least one of the external injection structure and the internal injection structure is the injection structure 10.

[0094] It can be understood that the burner 20 includes a burner head 21 and an ejection structure. The number of ejection structures can be multiple groups, and each group of ejection structures can be a single-stage ejection structure or a multi-stage ejection structure. Specifically in this solution, the burner 20 includes an external ejection structure and an internal ejection structure. The external ejection structure and the internal ejection structure can both be the aforementioned ejection structure 10, that is, the external ejection structure and the internal ejection structure both include the air adjustment component 200 in the aforementioned ejection structure 10, and the external ejection structure and the internal ejection structure can both achieve the adjustment of the air intake amount. Of course, it can also be that one of the external ejection structure and the internal ejection structure is the aforementioned ejection structure 10, and the other does not have the air adjustment component 200 in the aforementioned ejection structure 10.

[0095] Specifically in this solution, the external ejection structure is the aforementioned ejection structure 10, and the difference between the external ejection structure and the internal ejection structure is at least that the internal ejection structure does not have the air adjustment component 200, that is, the external ejection structure can adjust the air intake, and the internal ejection structure cannot adjust the air intake. In this way, the internal ejection structure does not need to adjust the air intake, and the internal ejection structure supplies air to the inner ring of the burner, which can meet the gas supply requirements of the fuel gas.

[0096] The utility model also provides a stove, which includes the burner 20 as described above. The specific structure of the burner 20 refers to the above embodiment. Since the stove adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0097] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An ejection structure, characterized in that: include: An ejection body comprises a nozzle, a first ejection tube and a second ejection tube, wherein the first ejection tube has a first ejection channel, and the second ejection tube has a second ejection channel; a first air channel is formed between the nozzle and an air inlet of the first ejection tube, and the first air channel is communicated with the first ejection channel; a second air channel is formed between an air outlet of the first ejection tube and an air inlet of the second ejection tube, and the second air channel is communicated with the second ejection channel; and An air regulating component is movably arranged on the ejection body, and is used to regulate the amount of air entering the first ejection channel from the first air channel and / or to regulate the amount of air entering the second ejection channel from the second air channel.

2. The ejection structure according to claim 1, characterized in that: The air regulating component includes a first air regulating member and a first limiting member. The first air regulating member can be movably arranged on the first ejection tube or the second ejection tube. The distance between the first air regulating member and the air inlet of the second air channel is adjustable. The first limiting member is arranged on the first ejection tube or the second ejection tube and cooperates with the first air regulating member to limit the distance between the first air regulating member and the air inlet of the second air channel.

3. The ejection structure according to claim 2, characterized in that: The first air regulating member is provided with a first screw hole which penetrates the first air regulating member along the axial direction of the first ejector tube, the outer peripheral wall of the first ejector tube is provided with a first external thread, and the first air regulating member is threadedly connected to the first external thread of the first ejector tube through the first screw hole.

4. The ejection structure according to claim 3, characterized in that: The first limiting member is elastic and is used to apply a thrust force to the first air regulating member to limit the axial movement of the first air regulating member along the first ejector tube.

5. The ejection structure according to claim 4, characterized in that: The first limiter is arranged on a side of the first air regulating member facing away from the air inlet of the second air channel, one end of the first limiter abuts against the first air regulating member, and the other end of the first limiter abuts against or is connected to the first ejector pipe.

6. The ejection structure according to claim 4, characterized in that: The first limiting member is sleeved on the first ejection tube, and the first limiting member, the first ejection tube and the first air regulating member can be separated; And / or, the first limiting member is a spring.

7. The ejection structure according to claim 1, characterized in that: The nozzle has an air jet outlet, the minimum inner diameter of the air jet outlet is D1, the minimum inner diameter of the second injection channel is D2, the minimum inner diameter of the first injection channel is D3, and D1, D2 and D3 satisfy: D1<D3<D2.

8. The ejection structure according to claim 7, characterized in that: The D1 satisfies: 5mm≤D1≤10mm; And / or, D2 satisfies: 10 mm ≤ D2 ≤ 20 mm; And / or, D3 satisfies: 10mm≤D3≤15mm.

9. The ejection structure according to claim 8, characterized in that: The jet outlet of the nozzle is arranged inside the air inlet of the first ejector pipe to form the first air channel, and the maximum inner diameter of the first air channel is D4, and D4 satisfies: 30mm≤D4≤35mm; And / or, the air outlet of the first ejector pipe is arranged on the inner side of the air inlet of the second ejector pipe to form the second air channel, and the maximum inner diameter of the second air channel is D5, and D5 satisfies: 30mm≤D5≤40mm.

10. The ejection structure according to claim 1, characterized in that: The air regulating component includes a second air regulating member and a second limiting member, the second air regulating member can be movably arranged on the nozzle or the first ejection pipe, the distance between the second air regulating member and the air inlet of the first air channel is adjustable, the second limiting member is arranged on the nozzle or the first ejection pipe and cooperates with the second air regulating member to limit the distance between the second air regulating member and the air inlet of the first air channel.

11. The ejection structure according to claim 10, characterized in that: The second air regulating member is provided with a second screw hole penetrating the second air regulating member along the axial direction of the nozzle, the outer peripheral wall of the nozzle is provided with a second external thread, and the second air regulating member is threadedly connected to the second external thread of the nozzle through the second screw hole.

12. The ejection structure according to claim 11, characterized in that: The second limiting member is elastic, and is used to apply a thrust force to the second air regulating member to limit the axial movement of the second air regulating member along the nozzle; And / or, the second position limiting member is arranged on the side of the second air regulating member facing away from the air inlet of the first air channel, one end of the second position limiting member abuts against the second air regulating member, and the other end of the second position limiting member abuts against or is connected to the nozzle.

13. The ejection structure according to any one of claims 1 to 12, characterized in that: The ejection body also includes a connecting piece, one end of which is connected to the first ejection tube, and the other end of which is connected to the second ejection tube. The connecting piece is provided with an indicator portion, which is used to indicate the position of the air regulating component at the corresponding air intake volume.

14. The ejection structure according to claim 13, characterized in that: The connecting member comprises a connecting column, the connecting column is arranged at the air inlet of the second ejector tube, and the indicating part is arranged on the connecting column; the connecting column and the indicating part are extended along the axial direction of the first ejector tube; And / or, the connecting column and the second ejector tube are an integral structure, and the air regulating assembly and the indicating portion are spaced apart.

15. The ejection structure according to claim 14, characterized in that: The indicating portion includes at least one of an indicating groove, an indicating line and an indicating protrusion; And / or, the air regulating assembly is provided with an anti-slip portion.

16. A burner, characterized in that: It comprises the ejection structure as claimed in any one of claims 1 to 15.

17. The burner according to claim 16, characterized in that The burner comprises an outer ejection structure for supplying gas to an outer ring of a burner head and an inner ejection structure for supplying gas to an inner ring of a burner head, and at least one of the outer ejection structure and the inner ejection structure is the ejection structure.

18. A cooking appliance, characterized in that: The cooker comprises the burner according to claim 16 or 17.

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