Combustor and gas stove

Abstract

The utility model discloses a combustor and a gas stove, the combustor comprises a furnace end, a gas distribution disc and a fire cover, the furnace end comprises a body part, the gas distribution disc covers the body part and is detachably arranged, and the fire cover covers the gas distribution disc and is detachably arranged. According to the technical scheme, after flowing out of the burner, gas firstly enters the gas distribution disc, then enters the fire cover and is sprayed out of the fire holes of the fire cover, through the arrangement of the gas distribution disc, uniform gas distribution is facilitated, the situation that flames generated by the fire cover are different in length is effectively restrained or even avoided, the fire cover and the gas distribution disc are designed to be detachable, and the service life of the burner is prolonged. And cleaning and maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas stoves, in particular to a burner and a gas stove. BACKGROUND

[0002] The burner comprises a burner head and a fire cover arranged on the burner head, gas flows through the burner head and the fire cover in sequence after entering the burner head, and is finally sprayed out from the fire hole of the fire cover. When the gas enters the fire cover from the burner head, the uneven distribution of the gas eventually causes the flames generated by the fire holes at different positions to be of different lengths, which is not conducive to heating the cookware. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a burner.

[0004] To achieve the above-mentioned purpose, the present application discloses a burner, which comprises:

[0005] a burner head, the burner head comprising a body part;

[0006] a gas distribution disc arranged on the body part and detachably arranged; and

[0007] a fire cover arranged on the gas distribution disc and detachably arranged.

[0008] In some embodiments of the present application, the projection of the gas distribution disc is larger than the projection of the body part in the projection in the top-down direction, and the projection of the body part is located within the contour range of the projection of the gas distribution disc.

[0009] In some embodiments of the present application, the radial dimension of the gas distribution disc is at least 1.3 times or more than the radial dimension of the body part.

[0010] In some embodiments of the present application, the fire cover is provided with an inner ring fire hole and an auxiliary fire hole;

[0011] The gas distribution disc is provided with an inner ring gas distribution cavity and a first gas distribution passage, the inner ring gas distribution cavity and the inner ring fire hole are in communication, and the first gas distribution passage and the auxiliary fire hole are in communication;

[0012] The burner head further comprises a first draft tube arranged on the body part, and the first draft tube is in communication with the inner ring gas distribution cavity and the first gas distribution passage;

[0013] The burner further comprises an ignition needle and a sensing needle, the ignition needle is adapted to ignite the auxiliary fire hole, and the sensing needle is adapted to sense the flame generated by the auxiliary fire hole.

[0014] In some embodiments of the present application, the gas distribution disc comprises:

[0015] a first gas distribution disc provided with a recessed cavity; and

[0016] a second gas distribution disc provided with the inner ring gas distribution cavity and the first gas distribution channel, at least part of the first gas distribution channel extending from the inner to the outer direction of the second gas distribution disc, the outer side of the second gas distribution disc provided with a first through hole in communication with the first gas distribution channel;

[0017] wherein the second gas distribution disc is arranged in the recessed cavity, and the cavity wall of the recessed cavity seals the first through hole.

[0018] In some embodiments of the present application, the burner is adapted for infrared combustion through the inner ring flame hole and atmospheric combustion through the auxiliary flame hole.

[0019] The body part is provided with an inner ring gas containing cavity, the inner ring gas containing cavity and the inner ring gas distribution cavity being in communication, and the first ejector pipe and the inner ring gas containing cavity being in communication.

[0020] The burner head further comprises a second gas distribution channel, the second gas distribution channel and the first gas distribution channel being in communication, and the first ejector pipe and the second gas distribution channel being in communication.

[0021] The projection of the inlet of the second gas distribution channel along the axial direction of the inlet of the second gas distribution channel or the outlet of the first ejector pipe is located within the projection of the outlet of the first ejector pipe, and the flow area of the inlet of the second gas distribution channel is smaller than the flow area of the outlet of the first ejector pipe.

[0022] In some embodiments of the present application, the inlet of the second gas distribution channel and the outlet of the first ejector pipe are coaxially arranged.

[0023] And / or, the flow area of the inlet of the second gas distribution channel is 1 / 9-4 / 9 times the flow area of the outlet of the first ejector pipe.

[0024] In some embodiments of the present application, the second gas distribution channel is arranged in the inner ring gas containing cavity.

[0025] In some embodiments of the present application, the second gas distribution channel and the first gas distribution channel are clearance fitted.

[0026] In some embodiments of the present application, the second gas distribution channel and the first gas distribution channel are clearance fitted in the up-down direction.

[0027] In some embodiments of the present application, the body part and the first ejector pipe are integrally formed, and the outer side of the burner head is provided with a second through hole located in the axial direction of the first ejector pipe.

[0028] The burner head further comprises a cover sealing the second through hole.

[0029] The second gas distribution passage includes a first part and a second part in communication, the first part is arranged on the cover and is in communication with the first ejector pipe, and the second part is connected with the first part and is in communication with the first gas distribution passage.

[0030] In some embodiments of the present application, the cover and the first part are integrally formed;

[0031] And / or, the second part and the first part are threadedly connected.

[0032] In some embodiments of the present application, the ignition needle and the induction needle are located outside the fire cover and the gas distribution disc.

[0033] And / or, the ignition needle and the induction needle constitute an ignition induction needle.

[0034] In some embodiments of the present application, the fire cover is provided with an inner ring fire hole and an outer ring fire hole, the gas distribution disc is provided with an inner ring gas distribution cavity and an outer ring gas distribution cavity, the body part is provided with an inner ring gas containing cavity and an outer ring gas containing cavity, and the burner further comprises a first ejector pipe and a third ejector pipe arranged on the body part, the inner ring fire hole and the inner ring gas distribution cavity are in communication, the inner ring gas distribution cavity and the inner ring gas containing cavity are in communication, the inner ring gas containing cavity and the first ejector pipe are in communication, the outer ring fire hole and the outer ring gas distribution cavity are in communication, the outer ring gas distribution cavity and the outer ring gas containing cavity are in communication, and the outer ring gas containing cavity and the third ejector pipe are in communication.

[0035] Or, the fire cover is provided with an inner ring fire hole, a middle ring fire hole and an outer ring fire hole, the gas distribution disc is provided with an inner ring gas distribution cavity, a middle ring gas distribution cavity and an outer ring gas distribution cavity, the body part is provided with an inner ring gas containing cavity, a middle ring gas containing cavity and an outer ring gas containing cavity, and the burner further comprises a first ejector pipe, a second ejector pipe and a third ejector pipe arranged on the body part, the inner ring fire hole and the inner ring gas distribution cavity are in communication, the inner ring gas distribution cavity and the inner ring gas containing cavity are in communication, the inner ring gas containing cavity and the first ejector pipe are in communication, the middle ring fire hole and the middle ring gas distribution cavity are in communication, the middle ring gas distribution cavity and the middle ring gas containing cavity are in communication, the middle ring gas containing cavity and the second ejector pipe are in communication, the outer ring fire hole and the outer ring gas distribution cavity are in communication, the outer ring gas distribution cavity and the outer ring gas containing cavity are in communication, and the outer ring gas containing cavity and the third ejector pipe are in communication.

[0036] In some embodiments of the present application, the first ejector pipe is adapted to be in communication with an inner ring passage of a gas valve, and the inner ring passage is adapted to provide a minimum flow.

[0037] In the technical scheme of the present application, the gas flows out from the burner head, enters the gas distribution disc first, then enters the fire cover and is sprayed out from the fire hole of the fire cover. By arranging the gas distribution disc, the gas is evenly distributed, and the length of the flame generated by the fire cover is effectively inhibited or even avoided. The fire cover and the gas distribution disc are designed to be detachable, which facilitates cleaning and maintenance.

[0038] Other advantages of the present application will be in part apparent and in part pointed out below. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0040] Figure 1 A schematic view of the burner in some embodiments;

[0041] Figure 2 An exploded view of the burner in some embodiments;

[0042] Figure 3 A schematic view of the fire cover in some embodiments;

[0043] Figure 4 A schematic view of the gas distribution disc in some embodiments;

[0044] Figure 5 An exploded view of the gas distribution disc in some embodiments;

[0045] Figure 6 A schematic view of the burner head in some embodiments;

[0046] Figure 7 An exploded view of the burner head in some embodiments;

[0047] Figure 8 A sectional view of the burner in some embodiments;

[0048] Figure 9 A sectional view of Figure 8 the structure shown in the figure;

[0049] Figure 10 A sectional view of Figure 9 the structure shown in the figure;

[0050] BRIEF DESCRIPTION OF DRAWINGS

[0051] Furnace head 1000, body part 1100, inner ring gas containing cavity 1110, middle ring gas containing cavity 1120, outer ring gas containing cavity 1130, second through hole 1140, cover 1200, second gas distribution passage 1300, first part 1310, inlet 1311, second part 1320, first ejector pipe 1410, throat 1412, diverging section 1413, outlet 1414, second ejector pipe 1420, third ejector pipe 1430, gas distribution disc 2000, first gas distribution disc 2100, recess 2110, second gas distribution disc 2200, inner ring gas distribution cavity 2310, middle ring gas distribution cavity 2320, outer ring gas distribution cavity 2330, first gas distribution passage 2410, first through hole 2420, fire cover 3000, inner ring fire hole 3100, middle ring fire hole 3200, outer ring fire hole 3300, auxiliary fire hole 3400.

[0052] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0057] The present application discloses a burner, combining Figure 1 and Figure 2 As shown in the figure, in some embodiments, the burner comprises a burner head 1000, a gas distribution disc 2000 and a fire cover 3000, the burner head 1000 comprises a body part 1100, the gas distribution disc 2000 is arranged on the body part 1100 and is configured to be detachably arranged, and the fire cover 3000 is arranged on the gas distribution disc 2000 and is configured to be detachably arranged.

[0058] After the gas flows out of the burner head 1000, it first enters the gas distribution disc 2000, and then enters the fire cover 3000 and is sprayed out of the fire hole of the fire cover 3000. By arranging the gas distribution disc 2000, the gas is evenly distributed, and the length of the flame generated by the fire cover 3000 is effectively inhibited or even avoided. In addition, the fire cover 3000 and the gas distribution disc 2000 are designed to be detachable, which is convenient for cleaning and maintenance.

[0059] Specifically, the gas supplied by the external gas source to the burner first enters the burner head. Generally, during the process of entering the gas, a certain amount of air will be mixed synchronously, which is called primary air. The gas composed of gas and air flows through the body part 1100, the gas distribution disc 2000 and the fire cover 3000 for the first time, and is finally sprayed out of the fire hole of the fire cover 3000 to be ignited to form a flame. In this embodiment, by arranging the gas distribution disc 2000, the distance between the fire cover 3000 and the body part 1100 is increased, and a certain space is provided for the gas to flow out of the body part 1100 and enter the fire cover 3000 before the gas is evenly distributed, that is, the gas can be evenly distributed in the gas distribution disc 2000. This is conducive to improving the uniformity of the gas entering the fire cover 3000, thereby reducing or even avoiding the situation that the length of the flame generated by the fire holes at different positions in the fire cover 3000 is not uniform.

[0060] In addition, in this embodiment, the gas distribution disc 2000 and the fire cover 3000 are designed to be detachably arranged. When necessary, the gas distribution disc 2000 and the fire cover 3000 can be detached for cleaning, which is conducive to cleaning and maintenance of the burner, and avoids the influence of the attachment of residues on the gas distribution disc 2000 and the fire cover 3000 on the flow of gas.

[0061] Combination Figure 1 and Figure 2 As shown, in some embodiments, when projected from top to bottom, the projection of the gas distribution plate 2000 is larger than the projection of the main body 1100, and the projection of the main body 1100 is within the outline of the projection of the gas distribution plate 2000. The orientation in this document is based on the burner being applied to the gas stove (or the gas stove including the burner), with the gas stove in normal installation and use as a reference. The side of the gas stove closer to the ground is considered lower, and the side away from the ground is considered upper. This arrangement allows the burner to have the structural characteristics of a small burner head and a large gas distribution plate. When viewed from top to bottom, the gas distribution plate 2000 obscures the main body 1100, thus reducing the exposure of the main body 1100 and lowering the probability of the burner head 1000 becoming dirty. For example, the size of the gas distribution plate 2000 is designed to be at least 1.3 times the radial dimension of the main body 1100, with the vertical direction being the axial direction and the radial and axial directions perpendicular.

[0062] Combination Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, in some embodiments, the burner cap 3000 is provided with an inner ring flame hole 3100 and an auxiliary flame hole 3400, the gas distribution plate 2000 is provided with an inner ring gas distribution chamber 2310 and a first gas distribution channel 2410, the burner head 1000 includes a first ejector tube 1410, the first ejector tube 1410 is disposed in the body part 1100, the inner ring flame hole 3100 is connected to the inner ring gas distribution chamber 2310, the inner ring gas distribution chamber 2310 is connected to the first ejector tube 1410, and the auxiliary flame hole 3400 is connected to the first gas distribution channel 2410. The first gas distribution channel 2410 is connected to the first ejector tube 1410. A portion of the gas input through the first ejector tube 1410 flows into the inner ring gas distribution chamber 2310 and is finally ejected from the inner ring flame hole 3100. Another portion of the gas input through the first ejector tube 1410 flows into the first gas distribution channel 2410 and is finally ejected from the auxiliary flame hole 3400. The burner also includes an ignition needle and a sensing needle. The ignition needle is used to ignite the auxiliary flame hole 3400, and the sensing needle is used to sense the flame generated by the auxiliary flame hole 3400.

[0063] The process of gas transmission in the first ejector tube 1410 is roughly as follows: the gas comes from bottled liquefied petroleum gas or pipeline natural gas. The gas valve controls the gas to be ejected through the nozzle. The nozzle is aligned with the first ejector tube 1410. During the process of the gas being injected from the nozzle into the first ejector tube 1410, a negative pressure is formed in the surrounding environment of the first ejector tube 1410, so that the air in the surrounding environment of the first ejector tube 1410 is synchronously ejected into the first ejector tube 1410 along with the gas injection (the air that enters through the ejection action is called ejection air, and the ejection air is primary air).

[0064] Generally, the fire cap 3000 is provided with an inner ring fire hole 3100 and an outer ring fire hole 3300, the inner ring fire hole 3100 is closer to the center of the fire cap 3000 relative to the outer ring fire hole 3300, and the outer ring fire hole 3300 is farther from the center of the fire cap 3000 relative to the inner ring fire hole 3100. Optionally, some fire caps 3000 are also provided with a middle ring fire hole 3200, which is located between the inner ring fire hole 3100 and the outer ring fire hole 3300, i.e. along the radial direction of the fire cap 3000 and away from the center of the fire cap 3000. The inner ring fire hole 3100, the middle ring fire hole 3200 and the outer ring fire hole 3300 are arranged in sequence, so as to form a multi-ring flame, and multi-ring means two rings or more.

[0065] When the ignition needle ignites the auxiliary fire hole 3400, the auxiliary fire hole 3400 generates a flame, and then transfers the flame to other fire holes, so that other fire holes also generate a flame. When the burner is in a burning state, the induction needle can contact the flame generated by the auxiliary fire hole 3400, so as to maintain the continuous gas supply state of the burner. Of course, in some embodiments, the ignition needle and the induction needle can be combined into one to form an ignition induction needle, such as an ion ignition induction needle, that is, the same needle can realize both ignition function and flame induction function.

[0066] Since the inner ring fire hole 3100 and the auxiliary fire hole 3400 are both in communication with the first injection pipe 1410, and the ignition needle and the induction needle need to cooperate with the auxiliary fire hole 3400, therefore, whether the burner is in a maximum fire state or a minimum fire state, gas will be sprayed from the inner ring fire hole 3100 and the auxiliary fire hole 3400, that is, the flame generated by the inner ring fire hole 3100 can be used to realize the minimum fire state of the burner, which is more conducive to small fire cooking. For example, the first injection pipe 1410 is adapted to communicate with the inner ring channel of the gas valve, and the inner ring channel is adapted to provide a minimum flow. In the case of providing only the minimum flow through the inner ring channel, the burner is in a minimum fire state.

[0067] Optionally, the ignition needle and the sensing needle are located on the outer side of the burner cap 3000 and the gas distribution plate 2000. The outer side refers to the periphery of the burner cap 3000 and the gas distribution plate 2000, which can be understood as the radial outer side of the burner cap 3000 and the radial outer side of the gas distribution plate 2000. In other words, the auxiliary ignition port 3400 is also located in a relatively outer position. Understandably, if the ignition needle and sensing needle are placed near the center of the burner cap 3000, then the ignition needle and sensing needle need to be coordinated with the internal structure of the burner cap 3000, the internal structure of the gas distribution plate 2000, and the internal structure of the burner head 1000. However, if the ignition needle and sensing needle are placed on the outside of the burner cap 3000 and the gas distribution plate 2000, then the ignition needle and sensing needle do not need to be coordinated with the internal structure of the burner cap 3000, the internal structure of the gas distribution plate 2000, and the internal structure of the burner head 1000, or in other words, the interference during structural design is reduced, the structural complexity of the burner is reduced, and the burner is more conducive to manufacturing. At the same time, it lays the foundation for the flatness of the surface of the burner cap 3000.

[0068] Combination Figure 4 and Figure 5 As shown, in some embodiments, the air distribution plate 2000 includes a first air distribution plate 2100 and a second air distribution plate 2200. The first air distribution plate 2100 is provided with a cavity 2110, and the second air distribution plate 2200 is provided with the aforementioned inner ring air distribution cavity 2310 and a first air distribution channel 2410. At least a portion of the first air distribution channel 2410 extends from the inner and outer directions of the second air distribution plate 2200. A first through hole 2420 is provided on the outer side of the second air distribution plate 2200, and the first through hole 2420 communicates with the first air distribution channel 2410. The second air distribution plate 2200 is disposed in the cavity 2110, and the cavity wall of the cavity 2110 seals the first through hole 2420.

[0069] Specifically, the air distribution plate 2000 comprises two parts: a first air distribution plate 2100 and a second air distribution plate 2200. The first air distribution plate 2100 and the second air distribution plate 2200 are processed separately and then assembled together. The inward and outward direction refers to the relative orientation between the interior and exterior of the second air distribution plate 2200. For example, the inward and outward direction is the radial direction of the second air distribution plate 2200. By extending at least a portion of the first air distribution channel 2410 along the inward and outward direction of the second air distribution plate 2200, the auxiliary flame port 3400 can be positioned relatively far from the center of the flame cap 3000. For example, as mentioned above, when the ignition needle and the sensing needle are placed on the outside of the burner cap 3000 and the gas distribution plate 2000, the auxiliary burner hole 3400 is located on the outside of the burner cap 3000. By extending at least part of the first gas distribution channel 2410 along the inside and outside direction of the second gas distribution plate 2200, the auxiliary burner hole 3400 can be connected to the first gas distribution channel 2410.

[0070] Further, the first gas passage 2410 is extended at least partially from the inner to the outer direction of the second gas disc 2200 and is provided with the first through hole 2420, which facilitates machining, for example, drilling from the outer to the inner direction of the second gas disc 2200 to form the first through hole 2420 and at least the first gas passage 2410. In order to seal the first through hole 2420 and improve the appearance, the first gas disc 2100 is provided with a recessed cavity 2110, and the second gas disc 2200 is installed in the recessed cavity 2110. After the second gas disc 2200 is installed in the recessed cavity 2110, the cavity wall of the recessed cavity 2110 is radially sealed with the corresponding part of the second gas disc 2200 to seal the first through hole 2420.

[0071] In combination Figure 6 to Figure 9 As shown, in some embodiments, the body part 1100 is provided with an inner ring gas containing cavity 1110, the burner head 1000 further includes a second gas passage 1300, the inner ring flame hole 3100 communicates with the inner ring gas distribution cavity 2310, the inner ring gas distribution cavity 2310 communicates with the inner ring gas containing cavity 1110, the inner ring gas containing cavity 1110 communicates with the first ejector pipe 1410, the auxiliary flame hole 3400 communicates with the first gas passage 2410, the first gas passage 2410 communicates with the second gas passage 1300, the second gas passage 1300 communicates with the first ejector pipe 1410, a part of the gas input through the first ejector pipe 1410 flows through the inner ring gas containing cavity 1110 and the inner ring gas distribution cavity 2310 in turn and is finally sprayed out from the inner ring flame hole 3100, another part of the gas input through the first ejector pipe 1410 flows through the second gas passage 1300 and the first gas passage 2410 in turn and is finally sprayed out from the auxiliary flame hole 3400.

[0072] Optionally, the burner performs infrared combustion through the inner ring flame hole 3100 and atmospheric combustion through the auxiliary flame hole 3400. The flame hole of infrared combustion has small heat intensity and can realize full premixed combustion to improve combustion efficiency without the need for supplementary secondary air. For example, the flame cover 3000 includes an infrared flame cover provided with the inner ring flame hole 3100, and the material of the infrared flame cover can be a porous ceramic plate. Atmospheric combustion is partial premixed combustion, which needs to supply secondary air to the flame after the flame is formed. Compared with infrared combustion, atmospheric combustion can form visible flame floating, which is more conducive to ignition, fire sensing and fire transmission. For example, the flame cover 3000 includes a metal flame cover, and the metal material can be copper, stainless steel or iron. The combination of infrared combustion and atmospheric combustion makes the burner have the characteristics of each other.

[0073] From the above, the burner needs to be conducted by 22002000 infrared combustion, and needs to be conducted by auxiliary fire hole 3400 atmospheric combustion, infrared combustion needs to ensure that the primary air coefficient is greater than 1, therefore, the first injection pipe 1410 provided by the gas primary air coefficient is greater than 1, and because the inner ring fire hole 3100 and the auxiliary fire hole 3400 are communicated with the first injection pipe 1410, if the primary air coefficient of the atmospheric combustion through the auxiliary fire hole 3400 is also greater than 1, then the atmospheric combustion through the auxiliary fire hole 3400 has an adverse effect, and the atmospheric combustion will produce off flame when the primary air coefficient is greater than 1, therefore, it is necessary to reduce the primary air coefficient of the gas entering the second gas passage 1300.

[0074] Therefore, in the present embodiment, the projection of the inlet 1311 of the second gas passage 1300 along the axial direction of the inlet 1311 of the second gas passage 1300 or the outlet 1414 of the first injection pipe 1410 is located within the projection range of the outlet 1414 of the first injection pipe 1410, and the flow area of the inlet 1311 of the second gas passage 1300 is smaller than the flow area of the outlet 1414 of the first injection pipe 1410. It can be understood that the first injection pipe 1410 is essentially a Venturi tube, and the end position of the first injection pipe 1410 can be regarded as the outlet 1414 of the first injection pipe 1410, or the first injection pipe 1410 can form an outlet 1414 at any position downstream of the throat 1412 thereof.

[0075] The projection of the inlet 1311 of the second gas distribution passage 1300 is located within the projection of the outlet 1414 of the first ejector pipe 1410, which can be a certain distance between the edge of the projection of the inlet 1311 of the second gas distribution passage 1300 and the edge of the projection of the outlet 1414 of the first ejector pipe 1410, or the edge of the projection of the inlet 1311 of the second gas distribution passage 1300 can overlap with the edge of the projection of the outlet 1414 of the first ejector pipe 1410. As described above, when the gas is injected into the first ejector pipe 1410, the surrounding air is also injected synchronously, and when the gas and the injected air are transmitted along the first ejector pipe 1410, the injected air will wrap the gas. Based on the optimization and improvement of the flow area and position between the inlet 1311 of the second gas distribution passage 1300 and the outlet 1414 of the first ejector pipe 1410, a part of the gas flowing towards the inlet 1311 of the second gas distribution passage 1300 is blocked and cannot enter the second gas distribution passage 1300 through the inlet 1311 of the second gas distribution passage 1300, thereby reducing the primary air coefficient of the gas entering the second gas distribution passage 1300, while the primary air coefficient of the gas entering the inner ring gas containing cavity 1110 remains unchanged or slightly increases, thereby meeting the requirement of the burner to perform infrared combustion through the inner ring flame hole 3100 and atmospheric combustion through the auxiliary flame hole 3400 based on the same ejector pipe, so that the atmospheric combustion through the auxiliary flame hole 3400 is not easy to produce off-flame.

[0076] In combination Figure 9 As shown in some embodiments, the inlet 1311 of the second gas distribution passage 1300 and the outlet 1414 of the first ejector pipe 1410 are coaxially arranged. Since the injected air will wrap the gas when the gas and the injected air are transmitted along the first ejector pipe 1410, the closer to the central position (central axis position) of the first ejector pipe 1410, the higher the content of the gas, and the farther away from the central position (central axis position) of the first ejector pipe 1410, the lower the content of the gas (the higher the content of the injected air). After the gas and the injected air leave the outlet 1414 of the first ejector pipe 1410, they have flow inertia, and by coaxially arranging the inlet 1311 of the second gas distribution passage 1300 and the outlet 1414 of the first ejector pipe 1410, the center of the inlet 1311 of the second gas distribution passage 1300 corresponds to the center of the outlet 1414 of the first ejector pipe 1410, which is more conducive to blocking part of the injected air (which will enter the inner ring gas containing cavity 1110) away from the central position (central axis position) of the first ejector pipe 1410, and can reduce the mixing degree (relatively speaking) of the injected air and the gas when passing through the inlet 1311 of the second gas distribution passage 1300, thereby achieving more optimal distribution adjustment of the primary air amount.

[0077] Optionally, in some embodiments, the flow area of the inlet 1311 of the second gas distribution channel 1300 is 1 / 9-4 / 9 times the flow area of the outlet 1414 of the first ejector pipe 1410, for example, the flow area of the inlet 1311 of the second gas distribution channel 1300 is 1 / 9, 2 / 9, 3 / 9 or 4 / 9 times the flow area of the outlet 1414 of the first ejector pipe 1410, by further optimizing the cooperation between the flow area of the inlet 1311 of the second gas distribution channel 1300 and the flow area of the outlet 1414 of the first ejector pipe 1410, the amount of air entering the second gas distribution channel 1300 is avoided to be too small to affect the efficiency of combustion through the auxiliary fire hole 3400.

[0078] In combination Figure 9 As shown in some embodiments, the second gas distribution channel 1300 is arranged in the inner ring gas containing cavity 1110, thereby saving space.

[0079] In combination Figure 9 And Figure 10 As shown in some embodiments, the second gas distribution channel 1300 is gap cooperated with the first gas distribution channel 2410. As known from the above, the gas distribution disc 2000 is covered on the body part 1100, so the gas distribution disc 2000 and the body part 1100 need to be provided with corresponding cooperation surfaces to realize sealing, by gap cooperation between the second gas distribution channel 1300 and the first gas distribution channel 2410, the cooperation surface between the second gas distribution channel 1300 and the first gas distribution channel 2410 is avoided to be too much, which is not conducive to the sealing between the gas distribution disc 2000 and the body part 1100, and is also not conducive to processing. On this basis, even if the gas leaks between the second gas distribution channel 1300 and the first gas distribution channel 2410, it is finally sprayed out from the inner ring fire hole 3100, ensuring safety.

[0080] Optionally, the second gas distribution channel 1300 and the first gas distribution channel 2410 are gap cooperated in the up-down direction, that is, there is a gap between the second gas distribution channel 1300 and the first gas distribution channel 2410 in the up-down direction. Since the gas distribution disc 2000 is covered on the body part 1100, that is, the gas distribution disc 2000 is located above the body part 1100, so at least part of the second gas distribution channel 1300 needs to extend in the inner ring gas containing cavity 1110 in the upward direction. Because the second gas distribution channel 1300 has a certain length in the up-down direction, it may be inclined, so the gap cooperation between the second gas distribution channel 1300 and the first gas distribution channel 2410 avoids the interference of the second gas distribution channel 1300 when the gas distribution disc 2000 is installed to the body part 1100.

[0081] In combination Figure 6 to Figure 9As shown, in some embodiments, the body part 1100 and the first ejector pipe 1410 are integrally formed, and the outer side of the burner head 1000 is provided with a second through hole 1140, which is located in the axial direction of the first ejector pipe 1410. By integrally forming, the number of parts is reduced, for example, the body part 1100 and the first ejector pipe 1410 are machined, and the position for the drill bit to pass through is machined to form the second through hole 1140. The present embodiment also includes a cover 1200, which seals the second through hole 1140, for example, the cover 1200 is embedded into the second through hole 1140 to seal the second through hole 1140.

[0082] It can be understood that the inner ring gas containing cavity 1110 of the body part 1100 needs to be open upward, and the first ejector pipe 1410 is generally arranged horizontally. In order to make the second gas distribution channel 1300 not only receive the gas of the first ejector pipe 1410, but also gap fit with the first gas distribution channel 2410, in the present embodiment, the second gas distribution channel 1300 includes a first part 1310 and a second part 1320 connected in communication, the first part 1310 is arranged on the cover 1200 and communicates with the first ejector pipe 1410, and the second part 1320 is connected with the first part 1310 and communicates with the first gas distribution channel 2410. That is, when the cover 1200 seals the second through hole 1140, the first part 1310 can be arranged inside the burner head 1000, and the second gas distribution channel 1300 receives the gas supplied by the first ejector pipe 1410 through the first part 1310, and the second part 1320 is an independent part relative to the first part 1310. The second part 1320 can be inserted from the inner ring gas containing cavity 1110 and connected with the first part 1310, so as to realize the communication between the first part 1310 and the second part 1320. For example, the second part 1320 and the first part 1310 are relatively fixed by threaded connection, that is, the second part 1320 is provided with external threads, the first part 1310 is provided with an internal threaded hole, and they are screwed together to fix the second part 1320 and the first part 1310 to intersect with each other.

[0083] In combination Figure 1 to Figure 10As shown, in some embodiments, the fire cap 3000 is provided with an inner ring fire hole 3100 and an outer ring fire hole 3300, the gas distribution disc 2000 is provided with an inner ring gas distribution cavity 2310 and an outer ring gas distribution cavity 2330, the body part 1100 is provided with an inner ring gas containing cavity 1110 and an outer ring gas containing cavity 1130, the burner head 1000 further comprises a first ejector pipe 1410 and a third ejector pipe 1430 arranged on the body part 1100, the inner ring fire hole 3100 and the inner ring gas distribution cavity 2310 are in communication, the inner ring gas distribution cavity 2310 and the inner ring gas containing cavity 1110 are in communication, the inner ring gas containing cavity 1110 and the first ejector pipe 1410 are in communication, the outer ring fire hole 3300 and the outer ring gas distribution cavity 2330 are in communication, the outer ring gas distribution cavity 2330 and the outer ring gas containing cavity 1130 are in communication, and the outer ring gas containing cavity 1130 and the third ejector pipe 1430 are in communication. A part of the gas transmitted along the first ejector pipe 1410 flows through the inner ring gas containing cavity 1110 and the inner ring gas distribution cavity 2310 in turn and is finally sprayed out of the inner ring fire hole 3100, another part of the gas flows through the second gas distribution passage 1300 and the first gas distribution passage 2410 in turn and is finally sprayed out of the auxiliary fire hole 3400, and the gas transmitted along the third ejector pipe 1430 flows through the outer ring gas containing cavity 1130 and the outer ring gas distribution cavity 2330 in turn and is finally sprayed out of the outer ring fire hole 3300.

[0084] Optionally, the fire cap 3000 is further provided with a middle ring fire hole 3200, and the gas distribution disc 2000 is correspondingly provided with a middle ring gas distribution cavity 2320, the body part 1100 is further provided with a middle ring gas containing cavity 1120, and the burner head 1000 further comprises a second ejector pipe 1420 arranged on the body part 1100, and the gas transmitted along the second ejector pipe 1420 flows through the middle ring gas containing cavity 1120 and the middle ring gas distribution cavity 2320 in turn and is finally sprayed out of the middle ring fire hole 3200. It can be understood that the inner ring fire hole 3100, the middle ring fire hole 3200 and the outer ring fire hole 3300 are structures for gas outflow, which can be in the form of a hole or a slit, the inner ring fire hole 3100 in the drawing is in the form of a hole, the middle ring fire hole 3200 and the outer ring fire hole 3300 are in the form of a slit, and the auxiliary fire hole 3400 is in the form of a hole.

[0085] When the gas distribution disc 2000 comprises a first gas distribution disc 2100 and a second gas distribution disc 2200, the second gas distribution disc 2200 is provided with an inner ring gas distribution cavity 2310, a middle ring gas distribution cavity 2320 and a first gas distribution passage 2410, and the first gas distribution disc 2100 and the second gas distribution disc 2200 surround the outer ring gas distribution cavity 2330. When the burner head 1000 comprises a first ejector pipe 1410, a second ejector pipe 1420 and a third ejector pipe 1430, the body part 1100 is integrally formed with the first ejector pipe 1410, the second ejector pipe 1420 and the third ejector pipe 1430, and the second ejector pipe 1420 and the third ejector pipe 1430 respectively have corresponding through holes in the axial direction and have corresponding covers 1200 to seal.

[0086] The application also discloses a gas stove Figure 1 to Figure 10 As shown in the figure, the gas stove comprises the above-mentioned burner, and it can be understood that the burner of the gas stove of the embodiment adopts the technical scheme of the above-mentioned embodiment, and thus at least has the beneficial effects brought by the technical scheme of the above-mentioned embodiment, which will not be repeated here.

[0087] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation made by using the content of the application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A burner, characterized by The burner comprises: a burner head (1000) comprising a body part (1100); a gas distribution disc (2000) arranged on the body part (1100) and detachably arranged; and a fire cover (3000) arranged on the gas distribution disc (2000) and detachably arranged.

2. The burner of claim 1, wherein In a projection in a top-down direction, a projection of the gas distribution disc (2000) is greater than a projection of the body part (1100), and the projection of the body part (1100) is located within a contour range of the projection of the gas distribution disc (2000).

3. The burner of claim 2, wherein A radial dimension of the gas distribution disc (2000) is at least 1.3 times greater than a radial dimension of the body part (1100).

4. The burner of claim 1, wherein The fire cover (3000) is provided with an inner ring fire hole (3100) and an auxiliary fire hole (3400); The gas distribution disc (2000) is provided with an inner ring gas distribution cavity (2310) and a first gas distribution channel (2410), the inner ring gas distribution cavity (2310) and the inner ring fire hole (3100) are in communication, and the first gas distribution channel (2410) and the auxiliary fire hole (3400) are in communication; The burner head (1000) further comprises a first ejector pipe (1410) arranged on the body part (1100), and the first ejector pipe (1410) is in communication with the inner ring gas distribution cavity (2310) and the first gas distribution channel (2410); The burner further comprises an ignition needle and an induction needle, the ignition needle is suitable for igniting the auxiliary fire hole (3400), and the induction needle is suitable for inducing a flame generated by the auxiliary fire hole (3400).

5. The burner of claim 4, wherein The gas distribution disc (2000) comprises: a first gas distribution disc (2100) provided with a recessed cavity (2110); and a second gas distribution disc (2200) provided with the inner ring gas distribution cavity (2310) and the first gas distribution channel (2410), at least a part of the first gas distribution channel (2410) extends from an inner-outer direction of the second gas distribution disc (2200), and an outer side of the second gas distribution disc (2200) is provided with a first through hole (2420) in communication with the first gas distribution channel (2410); The second gas distribution disc (2200) is arranged in the recessed cavity (2110), and a cavity wall of the recessed cavity (2110) seals the first through hole (2420).

6. The burner of claim 4, wherein The burner is suitable for infrared combustion through the inner ring fire hole (3100) and is suitable for atmospheric combustion through the auxiliary fire hole (3400); The body part (1100) is provided with an inner ring gas containing cavity (1110), the inner ring gas containing cavity (1110) and the inner ring gas distribution cavity (2310) are in communication, and the first ejector pipe (1410) and the inner ring gas containing cavity (1110) are in communication; The burner head (1000) further comprises a second gas distribution channel (1300), the second gas distribution channel (1300) and the first gas distribution channel (2410) are in communication, and the first ejector pipe (1410) and the second gas distribution channel (1300) are in communication; The projection of the inlet (1311) of the second gas distribution passage (1300) along the axial direction of the inlet (1311) of the second gas distribution passage (1300) or the outlet (1414) of the first ejector pipe (1410) is within the projection of the outlet (1414) of the first ejector pipe (1410), and the flow area of the inlet (1311) of the second gas distribution passage (1300) is less than the flow area of the outlet (1414) of the first ejector pipe (1410).

7. The burner of claim 6, wherein The inlet (1311) of the second gas distribution passage (1300) and the outlet (1414) of the first ejector pipe (1410) are coaxially arranged. The flow area of the inlet (1311) of the second gas distribution passage (1300) is 1 / 9 to 4 / 9 times the flow area of the outlet (1414) of the first ejector pipe (1410).

8. The burner of claim 6, wherein The second gas distribution passage (1300) is arranged in the inner ring gas containing cavity (1110).

9. The burner of claim 6, wherein The second gas distribution passage (1300) and the first gas distribution passage (2410) are clearance fitted.

10. The burner of claim 9, wherein The second gas distribution passage (1300) and the first gas distribution passage (2410) are clearance fitted in the up-down direction.

11. The burner of claim 6, wherein The body part (1100) and the first ejector pipe (1410) are integrally formed, and the outer side of the burner head (1000) is provided with a second through hole (1140) in the axial direction of the first ejector pipe (1410). The burner head (1000) further comprises a cover (1200) that seals the second through hole (1140). The second gas distribution passage (1300) comprises a first part (1310) and a second part (1320) in communication, the first part (1310) is arranged in the cover (1200) and communicates with the first ejector pipe (1410), and the second part (1320) is connected with the first part (1310) and communicates with the first gas distribution passage (2410).

12. The burner of claim 11, wherein The cover (1200) and the first part (1310) are integrally formed. The second part (1320) and the first part (1310) are threadedly connected.

13. The burner of claim 4, wherein The ignition needle and the induction needle are located on the outside of the fire cover (3000) and the gas distribution disc (2000). The ignition needle and the induction needle form an ignition induction needle.

14. The burner of any one of claims 1 to 3, wherein The fire cap (3000) is provided with an inner ring fire hole (3100) and an outer ring fire hole (3300), the gas distribution disc (2000) is provided with an inner ring gas distribution cavity (2310) and an outer ring gas distribution cavity (2330), the body part (1100) is provided with an inner ring gas containing cavity (1110) and an outer ring gas containing cavity (1130), the burner tip (1000) further comprises a first ejector pipe (1410) and a third ejector pipe (1430) arranged on the body part (1100), the inner ring fire hole (3100) and the inner ring gas distribution cavity (2310) are communicated, the inner ring gas distribution cavity (2310) and the inner ring gas containing cavity (1110) are communicated, the inner ring gas containing cavity (1110) and the first ejector pipe (1410) are communicated, the outer ring fire hole (3300) and the outer ring gas distribution cavity (2330) are communicated, the outer ring gas distribution cavity (2330) and the outer ring gas containing cavity (1130) are communicated, and the outer ring gas containing cavity (1130) and the third ejector pipe (1430) are communicated. Or, the fire cap (3000) is provided with an inner ring fire hole (3100), a middle ring fire hole (3200) and an outer ring fire hole (3300), the gas distribution disc (2000) is provided with an inner ring gas distribution cavity (2310), a middle ring gas distribution cavity (2320) and an outer ring gas distribution cavity (2330), the body part (1100) is provided with an inner ring gas containing cavity (1110), a middle ring gas containing cavity (1120) and an outer ring gas containing cavity (1130), the burner tip (1000) further comprises a first ejector pipe (1410), a second ejector pipe (1420) and a third ejector pipe (1430) arranged on the body part (1100), the inner ring fire hole (3100) and the inner ring gas distribution cavity (2310) are communicated, the inner ring gas distribution cavity (2310) and the inner ring gas containing cavity (1110) are communicated, the inner ring gas containing cavity (1110) and the first ejector pipe (1410) are communicated, the middle ring fire hole (3200) and the middle ring gas distribution cavity (2320) are communicated, the middle ring gas distribution cavity (2320) and the middle ring gas containing cavity (1120) are communicated, the middle ring gas containing cavity (1120) and the second ejector pipe (1420) are communicated, the outer ring fire hole (3300) and the outer ring gas distribution cavity (2330) are communicated, the outer ring gas distribution cavity (2330) and the outer ring gas containing cavity (1130) are communicated, and the outer ring gas containing cavity (1130) and the third ejector pipe (1430) are communicated.

15. The burner of claim 14, wherein The first ejector pipe (1410) is adapted to communicate with an inner ring channel of a gas valve, and the inner ring channel is adapted to provide a minimum flow.

16. A gas hob, characterized in that A burner comprising any one of claims 1 to 15.

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