Combustor and gas stove
By setting a blast channel on the burner head and using fluid machinery to supplement the blast air, the problem of incomplete fuel combustion is solved, and higher thermal efficiency and fewer ignition failures and flameouts are achieved.
Patent Information
- Application Number
- CN202422472164.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The replenishment process of primary air and secondary air in existing gas stoves makes it difficult to achieve full combustion of fuel, and the thermal efficiency needs to be improved.
A second cavity is set on the burner head to form a blast channel, and blast air is actively supplemented to the flame roots of the inner ring fire holes and the outer ring fire holes through fluid machinery. The tips of the ignition needle and the induction needle are designed to be lower than the outlet end of the gas transmission channel to reduce interference.
It improves the combustion efficiency of gas, reduces the occurrence of ignition failure and flameout, and improves thermal efficiency.
Smart Images
Figure CN223375794U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of gas stoves, and in particular to a burner and a gas stove. Background Art
[0002] When a gas stove is operating, gas flows through the gas valve and out of the nozzle, becoming high-speed, low-pressure gas that enters the burner. This mixed gas is called primary air, and this mixed gas is ejected from the burner hole and ignited by the ignition device, forming a flame. During the combustion process, ambient air is replenished for a second time, known as secondary air, to ensure combustion. Currently, the primary and secondary air react through the high-speed jet of gas and buoyancy. This replenishment process is very challenging to achieve full combustion of the fuel, and thermal efficiency needs to be improved. Utility Model Content
[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a burner.
[0004] To achieve the above objectives, the present application discloses a burner, comprising:
[0005] A burner head, the burner head having a first cavity, a second cavity and a third cavity;
[0006] a fire cover, which is provided on the burner head and includes an outer ring fire cover, an inner ring fire cover and a gas transmission channel; the outer ring fire cover is provided with an outer ring fire hole communicating with the first cavity; the inner ring fire cover is provided with an inner ring fire hole communicating with the third cavity; the outer ring fire cover surrounds the inner ring fire cover, and a sandwich cavity is provided between the outer ring fire cover and the inner ring fire cover; the gas transmission channel is communicated with the second cavity;
[0007] an ignition needle, the tip of which is disposed in the clamping cavity and is not higher than the gas outlet end of the gas transmission channel;
[0008] a sensing needle, the tip of which is disposed in the clamping cavity and is not higher than the gas outlet end of the gas transmission channel; and
[0009] The fluid machine is adapted to provide blast air to the second cavity.
[0010] In some embodiments of the present application, there are multiple gas delivery channels, and the multiple gas delivery channels are arranged alternately in a direction surrounding the center of the fire cover.
[0011] In some embodiments of the present application, the gas supply channel includes interconnected gas supply holes and gas supply annular gaps. The number of the gas supply holes is multiple, and the multiple gas supply holes are arranged alternately along the direction surrounding the center of the fire cover and are connected to the second cavity. The gas supply annular gaps extend along the direction surrounding the center of the fire cover to form the gas outlet end of the gas supply channel.
[0012] In some embodiments of the present application, the fire cover further includes a baffle, which covers the second cavity, and the baffle is provided with a first air hole, the second cavity is connected to the first air hole, and the first air hole is connected to the gas transmission channel.
[0013] In some embodiments of the present application, the fire cover also includes a baffle, which covers the second cavity, and the baffle is provided with a second air hole. The second cavity and the second air hole are connected, and the second air hole and the clamp cavity are connected, and the sum of the flow areas of the second air holes is smaller than the sum of the flow areas of the gas transmission channel.
[0014] In some embodiments of the present application, one of the outer ring fire cover and the inner ring fire cover is fixed to the baffle, and the other of the outer ring fire cover and the inner ring fire cover is provided with the gas transmission channel.
[0015] In some embodiments of the present application, the inner ring fire cover is further provided with a ventilation flow channel, and the ventilation flow channel connects the third cavity and the clamping cavity.
[0016] In some embodiments of the present application, the ventilation flow channel is arranged to be inclined from bottom to top away from the center of the fire cover.
[0017] In some embodiments of the present application, the inner ring fire cover includes a first inner cover body and a second inner cover body surrounding the first inner cover body, the first inner cover body is an infrared fire cover and is provided with the inner ring fire hole, and the second inner cover body is provided with the ventilation flow channel.
[0018] In some embodiments of the present application, the first inner cover body is a porous ceramic plate; and / or the second inner cover body is made of metal; and / or the outer ring fire cover is made of metal.
[0019] In some embodiments of the present application, the gas outlet end of the gas transmission channel is open away from the center of the fire cover.
[0020] In some embodiments of the present application, the second inner cover body is provided with the gas delivery channel, the second inner cover body is suitable for covering the ignition needle and the sensing needle from top to bottom, and the outer ring fire cover is suitable for covering the ignition needle and the sensing needle from outside to inside.
[0021] In some embodiments of the present application, the outer ring fire holes are arranged obliquely from bottom to top away from the center of the fire cover.
[0022] In some embodiments of the present application, the outer ring fire hole is in the shape of an annular slit.
[0023] In some embodiments of the present application, the fluid machine and the furnace head are connected and fixed.
[0024] In some embodiments of the present application, the first cavity is suitable for receiving fuel gas and induced air, and the third cavity is suitable for receiving fuel gas and induced air.
[0025] A second aspect of the present application discloses a gas stove, which includes the burner described above.
[0026] The technical solution of the present application forms a blast channel by arranging a second cavity on the burner head, and the blast air can enter the second cavity and flow out from the gas supply channel. The blast air is replenished by generating power through fluid machinery, and can be more actively replenished to the flame roots of the inner ring fire hole and / or the outer ring fire hole, so that the combustion of the gas is more complete, which is beneficial to improving thermal efficiency. Since the tip of the ignition needle and the tip of the induction needle are not higher than the gas outlet end of the gas supply channel, the interference of the blast air discharged from the gas supply channel on the ignition of the ignition needle and the fire sensing of the induction needle is reduced, thereby minimizing the occurrence of ignition failure and flameout.
[0027] Other advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.
[0029] Figure 1 Schematic diagram of a burner in some embodiments;
[0030] Figure 2 for Figure 1 The enlarged view marked A in FIG;
[0031] Figure 3 Schematic diagram of burner in some embodiments (viewing angle and Figure 1 different);
[0032] Figure 4 An exploded view of a burner in some embodiments;
[0033] Figure 5 A cross-sectional view of a burner in some embodiments;
[0034] Figure 6 for Figure 5 The enlarged image marked as B in the figure;
[0035] Figure 7 The cross-sectional view of the burner in some embodiments (cross section and Figure 5 different);
[0036] Figure 8 for Figure 7 The enlarged image marked as C in the figure;
[0037] Figure 9 The cross-sectional view of the burner in some embodiments (cross section and Figure 5 、 Figure 7 different);
[0038] Figure 10 for Figure 9 The enlarged image marked with D in the figure;
[0039] Figure 11 Schematic diagram of the partial structure of the burner in some embodiments;
[0040] Figure 12 Schematic diagram of the inner ring fire cover in some embodiments;
[0041] Figure 13 Schematic diagram of the inner ring fire cover in some embodiments (viewing angle and Figure 12 different);
[0042] Figure 14 A cross-sectional view of an inner ring fire cover in some embodiments;
[0043] Figure 15 for Figure 14 The enlarged image marked with E in the figure.
[0044] Description of Figure Numbers:
[0045] Burner head 1000, first cavity 1100, second cavity 1200, third cavity 1300, fire cover 2000, outer ring fire cover 2100, outer ring fire hole 2110, inner ring fire cover 2200, first inner cover body 2210, inner ring fire hole 2211, second inner cover body 2220, gas supply channel 2230, gas supply hole 2231, gas supply annular gap 2232, gas outlet end 2233, ventilation flow channel 2240, baffle 2300, first air hole 2310, second air hole 2320, clamping cavity 2400, fluid machinery 3000, ignition needle 4100, induction needle 4200, first ejector tube 5100, third ejector tube 5300.
[0046] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0048] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0049] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0050] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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 this application.
[0051] The first aspect of the present application discloses a burner, Figures 1 to 10As shown, in some embodiments, the burner includes a burner head 1000, a fire cover 2000, an ignition needle 4100, an induction needle 4200 and a fluid machine 3000, the burner head 1000 has a first cavity 1100, a second cavity 1200 and a third cavity 1300, the fire cover 2000 is covered on the burner head 1000, the fire cover 2000 has a gas transmission channel 2230, an outer ring fire cover 2100 and an inner ring fire cover 2200, the outer ring fire cover 2100 is provided with an outer ring fire hole 2110, the outer ring fire hole 2110 is connected to the first cavity 1100, the inner ring fire cover 2200 is provided with an inner ring fire hole 2211, and the inner ring fire hole 2211 is connected to the third cavity 1300. 00 is connected, the outer ring fire cover 2100 surrounds the inner ring fire cover 2200, and a clamping cavity 2400 is formed between the outer ring fire cover 2100 and the inner ring fire cover 2200. The gas supply channel 2230 is connected to the second cavity 1200. The tip of the ignition needle 4100 is set in the clamping cavity 2400, and the tip of the sensing needle 4200 is set in the clamping cavity 2400. The tip of the ignition needle 4100 is not higher than the gas outlet end 2233 of the gas supply channel 2230, and the tip of the sensing needle 4200 is not higher than the gas outlet end 2233 of the gas supply channel 2230. The fluid machinery 3000 is used to generate blast air, and the blast air is passed into the second cavity 1200 and discharged from the gas supply channel 2230.
[0052] In this embodiment, a second cavity 1200 is provided on the burner head 1000 to form a blast channel, and blast air can enter the second cavity 1200 and flow out from the gas supply channel 2230. The blast air is supplemented by generating power through the fluid machinery 3000, and can be more actively supplemented to the flame roots of the inner ring fire hole 2211 and / or the outer ring fire hole 2110, so that the combustion of the gas is more complete, which is beneficial to improving the thermal efficiency. Since the tip of the ignition needle 4100 and the tip of the sensing needle 4200 are not higher than the gas outlet end 2233 of the gas supply channel 2230, the interference of the blast air discharged from the gas supply channel 2230 on the ignition of the ignition needle 4100 and the fire sensing of the sensing needle 4200 is reduced, thereby reducing the occurrence of ignition failure and flameout as much as possible.
[0053] Specifically, the burner head 1000 can be an integrally formed structure, or can be formed by connecting separate components. The burner head 1000 includes a first cavity 1100, a second cavity 1200, and a third cavity 1300. Figure 4 As shown in the burner 1000, the first cavity 1100 surrounds the second cavity 1200, the second cavity 1200 surrounds the third cavity 1300, the first cavity 1100 and the second cavity 1200 are arranged with a common wall, and the second cavity 1200 and the third cavity 1300 are arranged with a common wall, which is conducive to reducing the structural complexity of the burner 1000.
[0054] The fire cover 2000 includes an outer ring fire cover 2100 and an inner ring fire cover 2200. The outer ring fire cover 2100 surrounds the inner ring fire cover 2200. When the fire cover 2000 is placed on the burner head 1000, the outer ring fire cover 2100 encloses the first cavity 1100, and the inner ring fire cover 2200 encloses the third cavity 1300. The outer ring fire cover 2100 is provided with an outer ring fire hole 2110, and the inner ring fire cover 2200 is provided with an inner ring fire hole 2211. The outer ring fire hole 2110 is in communication with the first cavity 1100, and the inner ring fire hole 2211 is in communication with the third cavity 1300. It is understood that the outer ring fire hole 2110 and the inner ring fire hole 2211 here should be understood as structures for gas outflow, and can be in the shape of a hole, a slit, etc. For example, the outer ring fire hole 2110 in the accompanying drawings is in the shape of a ring slit, and the inner ring fire hole 2211 is in the shape of a hole. After the gas enters the first cavity 1100, it is ejected from the outer ring fire hole 2110 and ignited to form a flame. Similarly, after the gas enters the third cavity 1300, it is ejected from the inner ring fire hole 2211 and ignited to form a flame. In order to improve the combustion efficiency of the gas ejected from the fire cover 2000, forced supplementation of blast air is achieved through the fluid machinery 3000.
[0055] Fluid machine 3000 is a machine that uses fluid as a working medium for energy conversion. For example, fluid machine 3000 is a blower. Through the action of fluid machine 3000, blast air can be forcibly provided. Blast air is introduced into second chamber 1200. Because the clamping chamber 2400 is connected to the gas transmission channel 2230, the blast air enters the gas transmission channel 2230 and is then discharged from the gas transmission channel 2230. After being discharged from the gas transmission channel 2230, the blast air can be replenished to the flame root of the outer ring fire hole 2110 and / or the flame root of the inner ring fire hole 2211, thereby improving the combustion efficiency of the gas ejected from the outer ring fire hole 2110 and / or the inner ring fire hole 2211, thereby improving thermal efficiency. Fluid machine 3000 can be directly connected and fixed to the burner head 1000, which is more convenient for cooperation with the second chamber 1200 and directly provides blast air to the second chamber 1200.
[0056] The following is further explained by taking the example of the induced air and gas being ejected from the outer ring fire holes 2110 and the induced air and gas being ejected from the inner ring fire holes 2211 .
[0057] The induced air and gas enter the first chamber 1100 and are then ejected from the first chamber 1100 through the outer ring fire holes 2110, ignited, and form a flame. The gas originates from bottled liquefied gas or pipeline natural gas. The gas is ejected from the nozzle and enters the first chamber 1100. During the gas injection process, the air is simultaneously injected. The injection of air can be referred to in related art. It is generally based on the Venturi principle. For example, the burner is provided with a first ejector tube 5100 connected to the first chamber 1100. The gas is injected toward the first ejector tube 5100. During the gas injection process, a negative pressure is generated in the surrounding environment, causing the surrounding air to be simultaneously injected into the first ejector tube 5100 along with the gas injection (this part of the air entering through the injection effect is the injection air, which is primary air). The injected air and gas enter the first chamber 1100 along the first ejector tube 5100, mix, and are then ejected from the outer ring fire holes 2110.
[0058] Similarly, induced air and gas enter the third chamber 1300 and are then ejected from the third chamber 1300 through the inner ring flame holes 2211, ignited, and form a flame. The gas, which originates from bottled liquefied gas or pipeline natural gas, is ejected from a nozzle and enters the third chamber 1300. During the gas injection process, air is simultaneously injected. For information on air injection, see related art. This is generally based on the Venturi principle. For example, a burner may be provided with a third ejector tube 5300 connected to the third chamber 1300. Gas is injected toward the third ejector tube 5300. During gas injection, negative pressure is created in the surrounding environment, causing ambient air to be simultaneously injected into the third ejector tube 5300 along with the gas injection (this air that enters through the injection process is called injection air, also known as primary air). The injected air and gas flow along the third ejector tube 5300 into the third chamber 1300, where they mix and are then ejected from the inner ring flame holes 2211.
[0059] When the induced air ejected from the outer ring fire hole 2110 is insufficient to support the combustion of the gas ejected from the outer ring fire hole 2110, secondary air needs to be supplemented. In this embodiment, the second chamber 1200 is connected via the gas transmission channel 2230, so that the blast air can be discharged from the gas transmission channel 2230. The blast air can provide enough oxygen to supplement the flame root formed by the outer ring fire hole 2110, and assist in the combustion of the gas ejected from the outer ring fire hole 2110. Compared with the supplementation of secondary air from the surrounding environment by buoyancy and suction, the forced blast air is more actively supplemented to the flame root of the outer ring fire hole 2110. Such a setting is more conducive to the full combustion of the gas ejected from the outer ring fire hole 2110 (in this case, the secondary air in the surrounding environment can still participate in the combustion of the gas ejected from the outer ring fire hole 2110). Similarly, when the induced air ejected from the inner ring fire hole 2211 is insufficient to support the combustion of the gas ejected from the inner ring fire hole 2211, secondary air needs to be supplemented. In this embodiment, the second chamber 1200 is connected via the gas supply channel 2230, so that the blast air can be discharged from the gas supply channel 2230. The blast air can provide enough oxygen to supplement the flame root of the inner ring fire hole 2211 and assist in the combustion of the gas ejected from the inner ring fire hole 2211. Compared with the secondary air supplemented from the surrounding environment by buoyancy and suction, the forced blast air is more actively supplemented to the flame root of the inner ring fire hole 2211. Such a setting is more conducive to the full combustion of the gas ejected from the inner ring fire hole 2211 (in this case, the secondary air in the surrounding environment can still participate in the combustion of the gas ejected from the inner ring fire hole 2211). In addition, compared with the case where the blast air is supplemented in the form of primary air (the blast air and gas are mixed in the burner and then ejected), the blast air in this embodiment is supplemented in the form of secondary air, which makes it less likely that the flame of the outer ring fire hole 2110 and / or the flame of the inner ring fire hole 2211 will produce flame separation.
[0060] It is understandable that the ignition of the gas needs to be achieved through the ignition needle 4100. The tip of the ignition needle 4100 is set in the clamping cavity 2400, so as to ignite in the clamping cavity 2400. The ignition of the ignition needle 4100 is to emit an electric spark to ignite the gas. In this embodiment, the tip of the ignition needle 4100 is designed to be no higher than the outlet end 2233 of the gas transmission channel 2230, that is, the highest point of the tip of the ignition needle 4100 is no higher than the highest point of the outlet end 2233 of the gas transmission channel 2230. For example, the ignition needle 4100 The highest point of the tip of 00 is flush with the highest point of the gas outlet end 2233 of the gas supply channel 2230, or the highest point of the tip of the ignition needle 4100 is lower than the highest point of the gas outlet end 2233 of the gas supply channel 2230, or the highest point of the tip of the ignition needle 4100 is lower than the lowest point of the gas outlet end 2233 of the gas supply channel 2230. Through such an arrangement, the influence of the blast air discharged from the gas outlet end 2233 of the gas supply channel 2230 on the gas to be ignited by the ignition needle 4100 can be reduced, thereby improving the ignition efficiency. Similarly, the maintenance of the combustion state of the burner needs to be achieved by sensing the flame through the sensing needle 4200. Since the tip of the sensing needle 4200 is set in the clamping cavity 2400, the flame is sensed in the clamping cavity 2400. In this embodiment, the tip of the sensing needle 4200 is designed to be no higher than the outlet end 2233 of the gas transmission channel 2230, that is, the highest point of the tip of the sensing needle 4200 is no higher than the highest point of the outlet end 2233 of the gas transmission channel 2230. For example, the highest point of the tip of the sensing needle 4200 and the gas transmission channel 2230 are not higher than the highest point of the gas outlet end 2233. The highest point of the air outlet end 2233 of the gas supply channel 2230 is flush with the highest point of the air outlet end 2233 of the gas supply channel 2230, or the highest point of the tip of the sensing needle 4200 is lower than the highest point of the air outlet end 2233 of the gas supply channel 2230, or the highest point of the tip of the sensing needle 4200 is lower than the lowest point of the air outlet end 2233 of the gas supply channel 2230. Through such an arrangement, the impact of the blast air discharged from the air outlet end 2233 of the gas supply channel 2230 on the flame sensed by the ignition needle 4100 can be reduced (such as suppressing the fluttering of the sensed flame), effectively preventing flameout. In addition, by arranging the tips of the ignition needle 4100 and the sensing needle 4200 in the clamping cavity 2400, the outer ring fire cover 2100 and the inner ring fire cover 2200 also provide protection for the ignition needle 4100 and the sensing needle 4200, reducing the probability of the ignition needle 4100 and the sensing needle 4200 being knocked against by external factors.
[0061] In some embodiments, there are multiple gas delivery channels 2230, and the multiple gas delivery channels 2230 are arranged alternately along the direction surrounding the center of the fire cover 2000. In this way, the blast air can be discharged through the gas delivery channels 2230 in the direction surrounding the center of the fire cover 2000, thereby increasing the contact area with the gas ejected from the outer ring fire hole 2110 and / or the gas ejected from the inner ring fire hole 2211, which is more conducive to improving the combustion efficiency.
[0062] Of course, you can also use the following solution, combined with Figures 5 to 10 ,as well as Figures 12 to 15 As shown, in some embodiments, the gas delivery channel 2230 includes a gas delivery hole 2231 and a gas delivery annular gap 2232, the gas delivery hole 2231 and the gas delivery annular gap 2232 are connected, the number of the gas delivery holes 2231 is multiple, and multiple means two or more. The multiple gas delivery holes 2231 are arranged alternately along the direction surrounding the center of the fire cover 2000, and the gas delivery annular gap 2232 extends along the direction surrounding the center of the fire cover 2000. One end of the gas delivery hole 2231 is connected to the second cavity 1200 and the other end is connected to the gas delivery annular gap 2232 (the gas delivery annular gap 2232 is located downstream of the gas delivery hole 2231), and the gas delivery annular gap 2232 constitutes a gas delivery channel The gas outlet end 2233 of 2230 and the gas annular gap 2232 are open structures. The blast air entering the second cavity 1200 can flow through the gas hole 2231 and the gas annular gap 2232 in sequence after entering the gas channel 2230, and finally be discharged from the gas annular gap 2232. Since the gas annular gap 2232 extends in the direction surrounding the center of the fire cover 2000, the blast air can form a continuous airflow in the direction surrounding the center of the fire cover 2000. Compared with the previous scheme, it is more conducive to increasing the contact area with the gas ejected from the outer ring fire hole 2110 and / or the gas ejected from the inner ring fire hole 2211, thereby further improving the combustion efficiency.
[0063] Combine Figures 4 to 11 As shown, in some embodiments, the fire cover 2000 further includes a baffle 2300, which is used to cover the second cavity 1200. The baffle 2300 is provided with a first air hole 2310. The second cavity 1200 is in communication with the first air hole 2310, and the first air hole 2310 is in communication with the gas transmission channel 2230. The baffle 2300 is provided to block the blast air entering the second cavity 1200. On this basis, the baffle 2300 is provided with the first air hole 2310, so that the blast air can be discharged from the first air hole 2310 and enter the gas transmission channel 2230, and then be transmitted along the gas transmission channel 2230 and discharged to replenish the flame root of the outer ring fire hole 2110 and / or the flame root of the inner ring fire hole 2211. For example, when the outer ring fire cover 2100 is assembled to the burner head 1000, it covers the first cavity 1100. By setting the baffle 2300, the baffle 2300 covers the second cavity 1200. When the inner ring fire cover 2200 is assembled, the inner ring fire cover 2200 covers the third cavity 1300. At the same time, the air inlet end of the gas supply channel 2230 abuts against the baffle 2300 and is aligned with the first air hole 2310. In this way, the blast air can pass through the first air hole 2310 from the second cavity 1200 and enter the gas supply channel 2230.
[0064] Combine Figures 5 to 11As shown, in some embodiments, the fire cover 2000 further includes a baffle 2300, which is used to cover the second cavity 1200. The baffle 2300 is provided with a second air hole 2320. The second cavity 1200 is connected to the second air hole 2320, and the second air hole 2320 is connected to the clamping cavity 2400. By providing the second air hole 2320, the blast air entering the second cavity 1200 can also pass through the second air hole 2320 and enter the clamping cavity 2400. It can be understood that because the tips of the ignition needle 4100 and the sensing needle 4200 are provided in the clamping cavity 2400, a flame is formed in the clamping cavity 2400, that is, there is combustion of gas in the clamping cavity 2400. The provision of the second air hole 2320 allows the blast air to enter the clamping cavity 2400 and replenish the root of the flame in the clamping cavity 2400, which is conducive to the full combustion of the gas in the clamping cavity 2400. It is worth noting that in order to prevent the blast air from entering the clamp chamber 2400 through the second air hole 2320 and affecting the gas / flame in the clamp chamber 2400, in this embodiment, the sum of the flow areas of the second air holes 2320 is smaller than the sum of the flow areas of the gas transmission channel 2230 (or the sum of the flow areas of the second air holes 2320 is smaller than the sum of the flow areas of the first air holes 2310), so that most / large flow of blast air is discharged through the gas transmission channel 2230 and supplemented to the flame root of the outer ring fire hole 2110 and / or the flame root of the inner ring fire hole 2211, and a small part / small flow of blast air enters the clamp chamber 2400 through the second air hole 2320 and supplements to the flame root of the clamp chamber 2400, which is beneficial to the generation of flame in the clamp chamber 2400, as well as ignition and fire sensing.
[0065] Combine Figure 4As shown, in some embodiments, the outer ring fire cover 2100 and one of the inner ring fire cover 2200 are fixed to the baffle 2300, and the other of the outer ring fire cover 2100 and the inner ring fire cover 2200 is provided with a gas transmission channel 2230. This configuration helps to reduce the number of parts during assembly and also facilitates the coordination of the baffle 2300 and the gas transmission channel 2230. When the outer ring fire cover 2100 and the baffle 2300 are fixed, the outer ring fire cover 2100 can be placed on the burner head 1000 to achieve the baffle 2300 covering the second cavity 1200. After the inner ring fire cover 2200 is assembled to the burner head 1000, the gas transmission channel 2230 and the baffle 2300 can be coordinated. When the inner ring fire cover 2200 and the baffle 2300 are fixed together, the baffle 2300 can cover the second cavity 1200 when the inner ring fire cover 2200 is placed on the burner head 1000. After the outer ring fire cover 2100 is assembled to the burner head 1000, the gas transmission channel 2230 and the baffle 2300 can be matched. For example, the outer ring fire cover 2100 and the baffle 2300 are fixed together to form a single component, and the inner ring fire cover 2200 forms a single component and is provided with the gas transmission channel 2230. Only two operations are required to remove or install the fire cover 2000. It is understandable that the aforementioned fixation can be fixed together by connection means such as screw connection, or the two can be integrally formed.
[0066] Combine Figures 7 to 10 as well as Figures 12 to 13 As shown, in some embodiments, the inner ring fire cover 2200 is further provided with a ventilation flow channel 2240, which connects the third cavity 1300 and the clamping cavity 2400. By providing the ventilation flow channel 2240, the ignition of the ignition needle 4100 and the fire sensing of the induction needle 4200 are achieved.
[0067] Specifically, in this embodiment, the inner ring fire cover 2200 is provided with a ventilation flow channel 2240. In addition to being ejected from the inner ring fire hole 2211, the gas entering the third chamber 1300 also enters the sandwich chamber 2400 along the ventilation flow channel 2240 (e.g., the mixture of induced air and gas is ejected from both the inner ring fire hole 2211 and the ventilation flow channel 2240). Since the ignition needle 4100 is provided in the sandwich chamber 2400, when the gas enters the sandwich chamber 2400 from the ventilation flow channel 2240, it will be ignited by the ignition needle 4100 to form a flame, which is then transmitted to the outer ring fire hole 2110 and the inner ring fire hole 2211, thereby igniting the gas ejected from the outer ring fire hole 2110 and the inner ring fire hole 2211 to form a flame. At the same time, the flame formed in the sandwich chamber 2400 is sensed by the sensing needle 4200, thereby maintaining the combustion state. It can be understood that the ignition needle 4100 is set on the exhaust path of the ventilation flow channel 2240, which makes it easier to ignite the gas discharged from the ventilation flow channel 2240 to form a flame. The sensing needle 4200 is also set on the exhaust path of the ventilation flow channel 2240, which makes it easier to contact with the flame to sense the fire.
[0068] Further, combined with Figure 8 and Figure 10 As shown, the ventilation flow channel 2240 is tilted from bottom to top away from the center of the fire cover 2000. It can be understood that after the gas enters the third cavity 1300, it flows from bottom to top. The ventilation flow channel 2240 is tilted from bottom to top away from the center of the fire cover 2000, which makes it more convenient for the gas to be discharged from the ventilation flow channel 2240 to the clamping cavity 2400.
[0069] Combine Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 as well as Figures 12 to 15As shown, in some embodiments, the inner ring fire cover 2200 has a first inner cover body 2210 and a second inner cover body 2220, the second inner cover body 2220 surrounds the first inner cover body 2210, the first inner cover body 2210 is provided with the aforementioned inner ring fire hole 2211 and the first inner cover body 2210 is an infrared fire cover, the second inner cover body 2220 is provided with the aforementioned ventilation flow channel 2240 (when the gas supply channel 2230 is provided in the inner ring fire cover 2200, the gas supply channel 2230 can be provided in the second inner cover body 2220), and the second inner cover body 2220 surrounds the first inner cover body 2210, and the second inner cover body 2220 and the first inner cover body 2210 can be combined together, and the second inner cover body 2220 supports the first inner cover body 2210. The first inner cover body 2210 is an infrared fire cover, which can realize infrared combustion (the whole body is red when in the burning state). For example, the first inner cover body 2210 is a porous ceramic plate to constitute an infrared fire cover. When the first inner cover body 2210 is an infrared fire cover, the heat intensity of its fire hole is small, and it can realize fully premixed infrared combustion, which is beneficial to improve combustion efficiency and reduce the demand for secondary air. There is even no need to supplement secondary air. In this way, the blast air does not need to be supplemented to the flame root of the inner ring fire hole 2211.
[0070] Furthermore, in some embodiments, the material of the second inner cover 2220 is metal, such as copper, stainless steel or iron, so that the combustion of the gas ejected from the air duct 2240 is atmospheric combustion. Similarly, the material of the outer ring fire cover 2100 can also be metal, such as copper, stainless steel or iron, so that the combustion of the gas ejected from the outer ring fire hole 2110 is atmospheric combustion. Generally speaking, when the first inner cover 2210 is an infrared fire cover, the power of its combustion is lower than the power of the outer ring fire cover 2100 made of metal. By combining different materials, it is possible to ensure the power of the burner combustion and achieve sufficient combustion of the gas. Moreover, it is precisely because the material of the second inner cover 2220 is metal that the flame formed in the clamping cavity 2400 exhibits a certain flutter (such as floating out of the clamping cavity 2400), which makes it easier to transmit fire.
[0071] Combine Figure 5 and Figure 6 As shown, in some embodiments, the outlet end 2233 of the gas supply channel 2230 is opened away from the center of the fire cover 2000. Since the first inner cover body 2210 is an infrared fire cover, fully premixed infrared combustion can be achieved without the need to supplement secondary air. By opening the outlet end 2233 of the gas supply channel 2230 away from the center of the fire cover 2000, the blast air can be more accurately supplemented to the flame root of the outer ring fire hole 2110.
[0072] Furthermore, in some embodiments, the second inner cover body 2220 is provided with the aforementioned gas transmission channel 2230, and along the radial direction of the fire cover 2000, the outer ring fire cover 2100 blocks the ignition needle 4100 and the sensing needle 4200 from the outside to the inside. The so-called from the outside to the inside means along the radial direction of the fire cover 2000 from the direction away from the center of the fire cover 2000 toward the center of the fire cover 2000, and along the axial direction of the fire cover 2000, the inner ring fire cover 2200 blocks the ignition needle 4100 and the sensing needle 4200 from top to bottom. Through such a setting, the hidden setting of the ignition needle 4100 and the sensing needle 4200 is realized, further improving the protection performance of the ignition needle 4100 and the sensing needle 4200, and effectively avoiding the contamination of the tip of the ignition needle 4100 and the tip of the sensing needle 4200, thereby ensuring the sensitivity of use. It is understandable that in some embodiments, one needle is used to achieve the ignition function and the fire sensing function, so the one needle can be regarded as including the ignition needle 4100 and the sensing needle 4200, such as an ion ignition sensing needle.
[0073] Combine Figures 5 to 8 As shown, in some embodiments, the outer ring fire holes 2110 are tilted upward from the bottom away from the center of the fire cover 2000, which facilitates the formation of a wide range of fire. Optionally, the outer ring fire holes 2110 are annular, for example, circular, so that gas is ejected along the circumference of the outer ring fire cover 2100. In this way, the flame formed by the clamping cavity 2400 can increase the contact area between the gas ejected from the annular outer ring fire holes 2110, which is conducive to improving the success rate of fire transfer.
[0074] The second aspect of the present application also discloses a gas stove, Figures 1 to 15As shown, the gas stove includes the above-mentioned burner, which includes a burner head 1000, a fire cover 2000, an ignition needle 4100, an induction needle 4200 and a fluid machine 3000. The burner head 1000 has a first cavity 1100, a second cavity 1200 and a third cavity 1300. The fire cover 2000 is covered on the burner head 1000. The fire cover 2000 has an outer ring fire cover 2100 and an inner ring fire cover 2200. The outer ring fire cover 2100 is provided with an outer ring fire hole 2110, which is connected to the first cavity 1100. The inner ring fire cover 2200 is provided with an inner ring fire hole 2211, which is connected to the third cavity 1300. The outer ring fire cover 2100 surrounds the inner ring fire cover 2200, and a clamping cavity 2400 is formed between the outer ring fire cover 2100 and the inner ring fire cover 2200. The gas supply channel 2230 is connected to the second cavity 1200. The tip of the ignition needle 4100 is set in the clamping cavity 2400, and the tip of the sensing needle 4200 is set in the clamping cavity 2400. The tip of the ignition needle 4100 is not higher than the gas outlet end 2233 of the gas supply channel 2230, and the tip of the sensing needle 4200 is not higher than the gas outlet end 2233 of the gas supply channel 2230. The fluid machinery 3000 is used to generate blast air, and the blast air is passed into the second cavity 1200 and discharged from the gas supply channel 2230.
[0075] In this embodiment, a second cavity 1200 is provided on the burner head 1000 to form a blast passage. Blast air can enter the second cavity 1200 and flow out of the gas transmission passage 2230. The blast air is replenished by the power generated by the fluid mechanism 3000, and can be more actively replenished to the flame roots of the inner ring fire holes 2211 and / or the outer ring fire holes 2110, making the gas combustion more complete, thereby facilitating improved thermal efficiency. Because the tips of the ignition needle 4100 and the sensing needle 4200 are not higher than the gas outlet end 2233 of the gas transmission passage 2230, this reduces the interference of the blast air discharged from the gas transmission passage 2230 with the ignition of the ignition needle 4100 and the flame sensing of the sensing needle 4200, thereby minimizing the occurrence of ignition failure and flameout. It can be understood that the burner of the gas stove of this embodiment adopts the technical solutions of the above-mentioned embodiments, and therefore at least has the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.
[0076] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.
Claims
1. A burner, characterized in that: The burner comprises: A furnace head (1000), wherein the furnace head (1000) has a first cavity (1100), a second cavity (1200), and a third cavity (1300); A fire cover (2000) is provided on the burner head (1000), the fire cover (2000) comprising an outer ring fire cover (2100), an inner ring fire cover (2200) and a gas transmission channel (2230), the outer ring fire cover (2100) being provided with an outer ring fire hole (2110) communicating with the first cavity (1100), the inner ring fire cover (2200) being provided with an inner ring fire hole (2211) communicating with the third cavity (1300), the outer ring fire cover (2100) surrounding the inner ring fire cover (2200), and a sandwich cavity (2400) being provided between the outer ring fire cover (2100) and the inner ring fire cover (2200), and the gas transmission channel (2230) being communicated with the second cavity (1200); an ignition needle (4100), the tip of the ignition needle (4100) being disposed in the clamping cavity (2400) and not higher than the gas outlet end (2233) of the gas delivery channel (2230); a sensing needle (4200), wherein the tip of the sensing needle (4200) is disposed in the clamping cavity (2400) and is not higher than the gas outlet end (2233) of the gas transmission channel (2230); and The fluid machine (3000) is adapted to provide blast air to the second chamber (1200).
2. The burner according to claim 1, wherein There are multiple gas delivery channels (2230), and the multiple gas delivery channels (2230) are arranged alternately in a direction surrounding the center of the fire cover (2000).
3. The burner according to claim 1, wherein The gas delivery channel (2230) includes a plurality of gas delivery holes (2231) and a gas delivery annular slit (2232) that are connected to each other. The plurality of gas delivery holes (2231) are arranged alternately along a direction surrounding the center of the fire cover (2000) and are connected to the second cavity (1200). The gas delivery annular slit (2232) extends along a direction surrounding the center of the fire cover (2000) to form a gas outlet end (2233) of the gas delivery channel (2230).
4. The burner according to claim 1, wherein The fire cover (2000) further comprises a baffle (2300), the baffle (2300) covers the second cavity (1200), the baffle (2300) is provided with a first air hole (2310), the second cavity (1200) and the first air hole (2310) are in communication, and the first air hole (2310) and the gas transmission channel (2230) are in communication.
5. The burner according to claim 1, wherein The fire cover (2000) further comprises a baffle (2300), the baffle (2300) covers the second cavity (1200), the baffle (2300) is provided with a second air hole (2320), the second cavity (1200) and the second air hole (2320) are in communication, the second air hole (2320) and the clamping cavity (2400) are in communication, and the sum of the flow areas of the second air holes (2320) is smaller than the sum of the flow areas of the gas transmission channel (2230).
6. The burner according to claim 4 or 5, characterized in that One of the outer ring fire cover (2100) and the inner ring fire cover (2200) is fixed to the baffle (2300), and the other of the outer ring fire cover (2100) and the inner ring fire cover (2200) is provided with the gas transmission channel (2230).
7. The burner according to claim 1, wherein The inner ring fire cover (2200) is further provided with a ventilation flow channel (2240), and the ventilation flow channel (2240) is connected with the third cavity (1300) and the clamping cavity (2400).
8. The burner according to claim 7, wherein The ventilation flow channel (2240) is arranged to be inclined from bottom to top away from the center of the fire cover (2000).
9. The burner according to claim 7, wherein The inner ring fire cover (2200) includes a first inner cover body (2210) and a second inner cover body (2220) surrounding the first inner cover body (2210), the first inner cover body (2210) is an infrared fire cover (2000) and is provided with the inner ring fire hole (2211), and the second inner cover body (2220) is provided with the ventilation flow channel (2240).
10. The burner according to claim 9, characterized in that The first inner cover (2210) is a porous ceramic plate; and / or the second inner cover (2220) is made of metal; and / or the outer ring fire cover (2100) is made of metal.
11. The burner according to claim 9, wherein The gas outlet end (2233) of the gas transmission channel (2230) is open away from the center of the fire cover (2000).
12. The burner according to claim 11, wherein The second inner cover (2220) is provided with the gas transmission channel (2230), and the second inner cover (2220) is suitable for shielding the ignition needle (4100) and the sensing needle (4200) from top to bottom, and the outer ring fire cover (2100) is suitable for shielding the ignition needle (4100) and the sensing needle (4200) from outside to inside.
13. The burner according to claim 1, wherein The outer ring fire holes (2110) are arranged obliquely from bottom to top away from the center of the fire cover (2000); And / or, the outer ring fire hole (2110) is in the shape of an annular seam.
14. The burner according to claim 1, wherein The fluid machinery (3000) and the furnace head (1000) are connected and fixed.
15. The burner according to claim 1, wherein The first chamber (1100) is suitable for receiving fuel gas and induced air, and the third chamber (1300) is suitable for receiving fuel gas and induced air.
16. A gas stove, characterized in that: A burner comprising the burner according to any one of claims 1 to 15.