Gas distribution plate assembly, burner and gas cooker

Abstract

The present invention discloses a gas distribution plate assembly, a burner and a gas cooker. The gas distribution plate assembly includes a gas distribution plate, a smoke ejector and an ejector. The gas distribution plate has an inner gas mixing chamber and an outer gas mixing chamber. The smoke ejector is connected to the gas distribution plate. The gas outlet of the smoke ejector is connected to the outer gas mixing chamber and / or the inner gas mixing chamber. The air inlet of the smoke ejector is located outside the gas distribution plate. The ejector is used to eject an ejector airflow into the air inlet. The ejector is used to eject an ejector airflow into the air inlet of the smoke ejector. The ejector airflow is ejected into the air inlet of the smoke ejector. The ejector airflow is used to drive the smoke outside the gas distribution plate into the smoke ejector, and the high-temperature smoke is transported to the outer gas mixing chamber and / or the inner gas mixing chamber, thereby increasing the temperature of the mixed gas in the outer gas mixing chamber and / or the inner gas mixing chamber, recycling the heat carried by the smoke, and improving the utilization rate of the heat.

Description

Technical Field

[0001] The invention relates to the technical field of gas cookers, and in particular to a gas distribution plate component, a burner and a gas cooker. Background Art

[0002] Gas stoves refer to kitchen appliances that use gas fuels such as liquefied petroleum gas, artificial coal gas, and natural gas for direct fire heating. At present, gas stoves have become the main cooking appliances in households. Gas stoves are equipped with burners, which heat by burning the flame generated by the mixed gas (gas and air) sprayed outward. The combustion process generates a large amount of high-temperature smoke, which takes away a large amount of heat, resulting in low heat utilization. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a gas distribution plate assembly that can recycle flue gas for secondary utilization and improve the utilization rate of heat.

[0004] The present invention also provides a burner using the gas distribution plate assembly.

[0005] The present invention also provides a gas cooker with the burner.

[0006] According to an embodiment of the present invention, a gas distribution plate assembly is used for a burner, comprising a gas distribution plate, a smoke ejector pipe and an ejector, the gas distribution plate having an inner gas mixing chamber and an outer gas mixing chamber, the smoke ejector pipe is connected to the gas distribution plate, an air outlet of the smoke ejector pipe is connected to the outer gas mixing chamber and / or the inner gas mixing chamber, an air inlet of the smoke ejector pipe is located on the outer side of the gas distribution plate, and the ejector is used to spray an ejection airflow into the air inlet.

[0007] The gas distribution plate assembly according to the embodiment of the present invention has at least the following beneficial effects: an induced air flow is sprayed into the air inlet of the smoke ejector tube through an ejector, and the smoke outside the gas distribution plate is driven into the smoke ejector tube by the induced air flow, and the high-temperature smoke is transported to the outer mixing chamber and / or the inner mixing chamber, thereby increasing the temperature of the mixed gas in the outer mixing chamber and / or the inner mixing chamber, recovering and utilizing the heat carried by the smoke, and improving the utilization rate of the heat.

[0008] According to some embodiments of the first aspect of the present invention, two smoke ejector pipes are provided, and the two smoke ejector pipes are circumferentially distributed around the gas distribution plate.

[0009] According to some embodiments of the first aspect of the present invention, the smoke ejector pipe is arc-shaped, and the rotation directions of the two smoke ejector pipes are consistent.

[0010] According to some embodiments of the first aspect of the present invention, the flue gas ejector pipe is provided with a straight segment, the air inlet is provided on the straight segment, and the axis of the straight segment is collinearly arranged with the axis of the ejector.

[0011] According to some embodiments of the first aspect of the present invention, the gas outlet is connected to the external gas mixing chamber, and the axis of one end of the smoke ejector pipe provided with the gas outlet is arranged along a tangent line of the external gas mixing chamber.

[0012] According to some embodiments of the first aspect of the present invention, the gas distribution plate and the smoke ejector pipe are integrally formed.

[0013] According to some embodiments of the first aspect of the present invention, the gas distribution plate includes an upper plate body and a lower plate body, the smoke ejector pipe includes an upper tube body and a lower tube body, the upper tube body is integrally formed with the upper plate body, and the lower tube body is integrally formed with the lower plate body.

[0014] According to some embodiments of the first aspect of the present invention, the upper disc body and the lower disc body are connected by fasteners, and / or the upper tube body and the lower tube body are connected by fasteners.

[0015] According to some embodiments of the first aspect of the present invention, the injector is provided with a connecting pipe structure, and the connecting pipe structure is used for connecting to a gas pipeline.

[0016] A burner according to an embodiment of the second aspect of the present invention comprises the gas distribution plate assembly as described in the embodiment of the first aspect.

[0017] The burner according to the embodiment of the present invention has at least the following beneficial effects: the gas distribution plate assembly has a smoke ejector pipe and an injector, and an ejector is used to spray an ejector airflow into the air inlet of the smoke ejector pipe, and the ejector airflow is used to drive the smoke outside the gas distribution plate into the smoke ejector pipe, and the high-temperature smoke is transported to the outer mixing chamber and / or the inner mixing chamber, thereby increasing the temperature of the mixed gas in the outer mixing chamber and / or the inner mixing chamber, recovering and utilizing the heat carried by the smoke, and improving the utilization rate of the heat.

[0018] According to some embodiments of the second aspect of the present invention, the burner further includes an inner fire cover, an outer fire cover, an inner ejector pipe and an outer ejector pipe, the inner fire cover is connected to the gas distribution plate and is connected to the inner gas mixing chamber, the outer fire cover is connected to the gas distribution plate and is connected to the outer gas mixing chamber, the outer ejector pipe is connected to the gas distribution plate and supplies gas to the outer gas mixing chamber, the inner ejector pipe is connected to the gas distribution plate and supplies gas to the inner gas mixing chamber, and the smoke ejector pipe is located on the outside of the outer fire cover.

[0019] According to some embodiments of the second aspect of the present invention, the injector is connected to a mounting bracket, and the mounting bracket is fixedly connected to the external ejection tube.

[0020] According to some embodiments of the second aspect of the present invention, the gas distribution plate is provided with a gas transmission channel connecting the external ejector tube and the external gas mixing chamber, and the gas outlet is at least partially staggered from the gas transmission channel.

[0021] A gas cooker according to an embodiment of a third aspect of the present invention comprises a burner as described in the embodiment of the second aspect.

[0022] According to some embodiments of the third aspect of the present invention, the present invention further comprises an energy-gathering disk surrounding the burner, wherein the smoke ejector is located inside the energy-gathering disk.

[0023] According to some embodiments of the third aspect of the present invention, the smoke ejector pipe is located above the inner bottom surface of the energy focusing disk.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 It is a schematic structural diagram of a gas distribution plate assembly according to some embodiments of the first aspect of the present invention;

[0027] Figure 2 for Figure 1 A cross-sectional view of the center gas plate assembly;

[0028] Figure 3 A top view of a gas distribution plate assembly according to some embodiments of the first aspect of the present invention;

[0029] Figure 4 Schematic diagram of the decomposition of the gas distribution plate assembly of some embodiments of the first aspect of the present invention Figure 1 ;

[0030] Figure 5 Schematic diagram of the decomposition of the gas distribution plate assembly of some embodiments of the first aspect of the present invention Figure 2

[0031] Figure 6 A schematic diagram of the structure of a burner in some embodiments of the second aspect of the present invention;

[0032] Figure 7 A left side view of a burner of some embodiments of the second aspect of the present invention;

[0033] Figure 8 A bottom view of a burner according to some embodiments of the second aspect of the present invention;

[0034] Fig. 9 A schematic diagram of the structure of the connection between the burner and the energy focusing disk in some embodiments of the second aspect of the present invention;

[0035] Fig.10 for Fig. 9 Schematic diagram of the exploded burner and energy-gathering disk Figure 1 ;

[0036] Fig.11 for Fig. 9 Schematic diagram of the exploded burner and energy-gathering disk Figure 2 ;

[0037] Fig.12 for Fig. 9 Cross-sectional view of the burner and the focusing disk.

[0038] The figures are as follows:

[0039] Gas distribution plate assembly 100, gas distribution plate 110, inner gas mixing chamber 111, outer gas mixing chamber 112, upper plate body 113, mounting plate 1131, lower plate body 114, mounting column 1141, gas transmission channel 115, smoke ejector 120, air inlet 121, air outlet 122, straight section 123, air outlet section 124, upper tube body 125, lower tube body 126, lug 127, ejector 130, nozzle 131, pipe connection structure 132, mounting frame 140, ring 141, air vent 142;

[0040] Burner 200, inner fire cover 210, outer fire cover 220, inner ejector tube 230, outer ejector tube 240;

[0041] Energy focusing disk 300 and support plate 301 . DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] Gas stoves refer to kitchen appliances that use gas fuels such as liquefied petroleum gas, artificial coal gas, and natural gas for direct fire heating. The flame of the gas stove directly heats the cooker. It is simple and easy to use and is deeply loved by people. It has become the most important heating device in the kitchen.

[0047] It is understandable that a gas stove includes a burner. When the burner is working, the gas enters from the burner's ejector pipe, is adjusted by the burner's valve (usually the user adjusts it through a knob), and is mixed with air at the same time (this part of air is called primary air). The mixed gas passes through the burner's gas distribution plate and enters the inner fire cover and the outer fire cover. The mixed gas is ejected from the fire holes of the inner fire cover and the outer fire cover, and is ignited by the ignition device to form a flame (the air required for combustion is called secondary air). The flame is used to heat the cooker. In order to reduce heat loss, some gas stoves are arranged with an energy-gathering disk on the periphery of the burner. The energy-gathering disk can partially reduce the heat loss generated by combustion. The energy-gathering disk is usually used to support the cooker at the same time. However, the temperature of the smoke generated by combustion is relatively high, and the exhaust smoke will take away a large amount of heat, resulting in low heat utilization. In addition, the smoke also carries some unburned gas, resulting in energy waste.

[0048] Reference Figures 1 to 5 The first embodiment of the present invention proposes a gas distribution plate assembly 100 for a burner 200, the gas distribution plate assembly 100 includes a gas distribution plate 110, a smoke ejector pipe 120 and an injector 130, the gas distribution plate 110 is provided with an inner mixing chamber 111 and an outer mixing chamber 112 inside, the inner mixing chamber 111 and the outer mixing chamber 112 are used for the flow of a mixed gas of supply gas and air.

[0049] It is understandable that if Figure 6 As shown, during use of the burner 200, the inner gas mixing chamber 111 and the outer gas mixing chamber 112 are used to transport the mixed gas, the inner fire cover 210 of the burner 200 is connected to the inner gas mixing chamber 111, and the outer fire cover 220 of the burner 200 is connected to the outer gas mixing chamber 112, and the mixed gas is ejected from the fire holes of the inner fire cover 210 and the outer fire cover 220 for combustion.

[0050] The smoke ejector 120 is connected to the outer periphery of the gas distribution plate 110, and the air inlet 121 of the smoke ejector 120 is located on the outside of the gas distribution plate 110. The ejector 130 is used to spray the ejection airflow into the air inlet 121, so as to use the ejection airflow to draw the smoke into the smoke ejector 120.

[0051] It is understandable that the air outlet 122 of the smoke ejector pipe 120 may be connected to the external mixing chamber 112 alone, or the air outlet 122 of the smoke ejector pipe 120 may be connected to the internal mixing chamber 111 alone, or the air outlet 122 of the smoke ejector pipe 120 may be connected to both the external mixing chamber 112 and the internal mixing chamber 111.

[0052] It can be understood that the induced airflow should be a relatively concentrated airflow beam. The ejector 130 has a nozzle 131. The nozzle 131 has a relatively small jet hole so as to eject the induced airflow with a high flow rate to drive the smoke.

[0053] Reference Figure 3 The nozzle 131 of the ejector 130 is arranged at a position close to the air inlet 121. The induced airflow ejected by the nozzle 131 is small. There is a gap between the induced airflow and the inner wall of the smoke ejector pipe 120. The induced airflow is used to drive the smoke outside the gas distribution plate 110 into the smoke ejector pipe 120, and the high-temperature smoke is transported to the outer mixing chamber 112 and / or the inner mixing chamber 111 through the smoke ejector pipe 120, thereby increasing the temperature of the mixed gas in the outer mixing chamber 112 and / or the inner mixing chamber 111, recycling the heat carried by the smoke, improving the utilization rate of the heat, and promoting the secondary combustion of the gas carried by the smoke, thereby improving the combustion efficiency, which is beneficial to energy saving and consumption reduction.

[0054] It can be understood that the function of the smoke ejector 120 is mainly to recycle the heat of the smoke, so the smoke ejector 120 is arranged on the outside of the gas distribution plate 110, close to the flame. Structurally, the smoke ejector 120 not only drains the smoke, but also the temperature of the smoke ejector 120 itself is relatively high, which further heats the gas in the smoke ejector 120 and helps to recycle the dissipated heat.

[0055] Reference Figure 1 and Figure 3 It can be understood that two smoke ejectors 120 are arranged outside the gas distribution plate 110, and the two smoke ejectors 120 are distributed circumferentially around the gas distribution plate 110. Usually, the gas distribution plate 110 is circular or approximately circular. Arranging two smoke ejectors 120 outside the gas distribution plate 110 can increase the amount of recovered smoke and further improve the recovery rate of smoke. Of course, according to the size of the gas distribution plate 110, three or more smoke ejectors 120 can be arranged to recover more smoke, which can be designed according to the structure of the burner 200.

[0056] Reference Figure 3 It can be understood that, considering that the outer circumference of the gas distribution plate 110 is circular, the smoke ejector pipe 120 fits the outer circumference of the gas distribution plate 110, and the smoke ejector pipe 120 is set to a curved arc shape, so that the contour of the gas distribution plate 110 is basically consistent with the shape of the smoke ejector pipe 120. The smoke ejector pipe 120 is tightly attached to the outer side of the gas distribution plate 110 to reduce the occupied space. The air inlet 121 of the smoke ejector pipe 120 is close to the smoke generation position, which helps to introduce smoke from the air inlet 121.

[0057] It can be understood that the two smoke ejector tubes 120 are arranged in the same rotation direction, so that the air inlets 121 of the two smoke ejector tubes 120 are staggered, and the smoke drawn between them will not interfere with each other. The air inlet 121 of one smoke ejector tube 120 is arranged close to the air outlet 122 of the other smoke ejector tube 120. The two smoke ejector tubes 120 basically surround the gas distribution plate 110, and the air outlets 122 of the two smoke ejector tubes 120 are symmetrical about the center of the gas distribution plate 110, so as to separate the two air inlets 121 to the maximum extent, thereby increasing the area of ​​the smoke ejector tubes 120 heated by the flame and facilitating the recovery of the dissipated heat.

[0058] Of course, the rotation directions of the two smoke ejector pipes 120 can also be set to be opposite, that is, the air inlets 121 of the two smoke ejector pipes 120 are located on the same side of the gas distribution plate 110. As long as the two air inlets 121 are separated by a certain distance, they can also drain the smoke separately to achieve smoke recycling.

[0059] It can be understood that in the above structure, since the air inlets 121 of the two smoke ejector pipes 120 are relatively close, the two smoke ejector pipes 120 can also share one injector 130, that is, the injector 130 is provided with two nozzles 131, and the two nozzles 131 are arranged on opposite sides of the injector 130, and each nozzle 131 corresponds to an air inlet 121, which is more compact in layout, reduces the number of parts and assembly steps, and reduces costs.

[0060] Reference Figure 3 It can be understood that one end of the smoke ejector pipe 120 has a straight section 123, and the air inlet 121 is set at the straight section 123. Considering that the ejection airflow ejected by the nozzle 131 of the ejector 130 basically flows along a straight line, the axis of the nozzle 131 and the axis of the straight section 123 are arranged on the same straight line to ensure that the ejection airflow ejected by the nozzle 131 smoothly enters the air inlet 121, reduces resistance, ensures flow rate, and helps to guide the smoke. The opening of the straight section 123 can also be set to a trumpet shape, which has a larger entry space and helps to guide the smoke.

[0061] Reference Figure 2It can be understood that the air outlet 122 is connected to the external mixing chamber 112, and the other end of the smoke ejector pipe 120 is the air outlet section 124. The air outlet 122 is arranged in the air outlet section 124, and the axis of the air outlet section 124 is arranged along the tangent of the external mixing chamber 112, which is conducive to the airflow in the smoke ejector pipe 120 to quickly flow into the external mixing chamber 112, prevent the structure of the gas distribution plate 110 from blocking the airflow, and reduce the flow resistance.

[0062] It can be understood that the gas distribution plate 110 and the smoke ejector pipe 120 are integrally formed, and both the gas distribution plate 110 and the smoke ejector pipe 120 are made of metal, such as aluminum, copper, stainless steel, etc., and are cast to reduce assembly steps, improve product consistency and accuracy, and reduce production costs.

[0063] Reference Figure 4 and Figure 5 It can be understood that, considering that the inner mixing chamber 111 and the outer mixing chamber 112 are also non-linear, which is not conducive to processing, the gas distribution plate 110 is divided into an upper plate body 113 and a lower plate body 114, and half of the inner mixing chamber 111 and the outer mixing chamber 112 are respectively formed on the opposite sides of the upper plate body 113 and the lower plate body 114, and then the upper plate body 113 and the lower plate body 114 are assembled into one; similarly, the smoke ejector pipe 120 is arc-shaped, and the smoke ejector pipe 120 includes an upper tube body 125 and a lower tube body 126, and the opposite surfaces of the upper tube body 125 and the lower tube body 126 each form half of the tube cavity, and the upper tube body 125 and the lower tube body 126 are assembled into one to obtain the smoke ejector pipe 120; the upper tube body 125 and the upper plate body 113 are integrally formed, and the lower tube body 126 and the lower plate body 114 are integrally formed, and then assembled into one.

[0064] Reference Figure 4 and Figure 5 It can be understood that when the upper plate 113 and the lower plate 114 are assembled, they are connected by fasteners, and the upper tube 125 and the lower tube 126 are also connected by fasteners. The fasteners are screws, which are easy to install. A mounting column 1141 is provided on the lower plate 114, and the mounting column 1141 is provided with a threaded hole. The upper plate 113 is provided with a mounting plate 1131, and the mounting plate 1131 is provided with a through hole for matching the screw. The screw is passed through the through hole and then screwed into the threaded hole of the mounting column 1141. It is easy to disassemble and assemble, and convenient for later maintenance. The outer walls of the upper tube 125 and the lower tube 126 are provided with corresponding ears 127. The ears 127 are fixed by screws to achieve fixed connection between the upper tube 125 and the lower tube 126.

[0065] It is understandable that, considering that the relative position of the ejector 130 and the smoke ejector tube 120 is fixed, the ejector 130 can be fixed on the gas distribution plate 110, and the gas distribution plate 110, the smoke ejector tube 120 and the ejector 130 are assembled into one body, which is more stable and reliable in use.

[0066] Reference Figure 8 It can be understood that the ejector 130 is provided with a pipe structure 132, which is used to connect the gas pipeline, that is, the ejection airflow ejected by the ejector 130 is gas, the gas and smoke are mixed in the smoke ejection pipe 120, and then input into the outer mixing chamber 112 and / or the inner mixing chamber 111 for combustion, so as to increase the temperature of the combustion gas and improve the utilization rate of heat. The gas has pressure, and with the jet hole of the nozzle 131, a faster ejection airflow can be obtained, which can drain more smoke and improve the utilization rate of heat.

[0067] It is understandable that the ejector 130 can also be connected to a blower device such as a fan, and the airflow passes through the jet hole of the nozzle 131. As long as a high-speed induced airflow can be ejected, the high-speed induced airflow can be used to drive the smoke.

[0068] Reference Figures 6 to 8 The second embodiment of the present invention proposes a burner 200, which includes the gas distribution plate assembly 100 of the first embodiment. The gas distribution plate assembly 100 has a smoke ejector pipe 120 and an injector 130. The nozzle 131 of the injector 130 is arranged at a position close to the air inlet 121. The ejection airflow ejected by the nozzle 131 is small, and there is a gap between the ejection airflow and the inner wall of the smoke ejector pipe 120. The ejection airflow is used to drive the smoke outside the gas distribution plate 110 into the smoke ejector pipe 120, and the high-temperature smoke is transported to the outer mixing chamber 112 and / or the inner mixing chamber 111 through the smoke ejector pipe 120, thereby increasing the temperature of the mixed gas in the outer mixing chamber 112 and / or the inner mixing chamber 111, recycling the heat carried by the smoke, improving the utilization rate of the heat, and promoting the secondary combustion of the gas carried by the smoke, thereby improving the combustion efficiency, which is beneficial to energy saving and consumption reduction.

[0069] Reference Figures 6 to 8 It can be understood that the burner 200 takes the gas distribution plate 110 as the main body, and an inner fire cover 210 and an outer fire cover 220 are installed on the upper side of the gas distribution plate 110, and an inner ejector tube 230 and an outer ejector tube 240 are installed on the lower side of the gas distribution plate 110. The inner fire cover 210 is connected to the inner mixing chamber 111, and the mixed gas in the inner mixing chamber 111 is ejected from multiple fire holes of the inner fire cover 210 for combustion. The outer fire cover 220 is connected to the outer mixing chamber 112, and the mixed gas in the outer mixing chamber 112 is ejected from multiple fire holes of the outer fire cover 220 for combustion.

[0070] It can be understood that the inner ejector pipe 230 is connected to the gas pipeline, the inner ejector pipe 230 is connected to the gas distribution plate 110 and inputs gas to the inner mixing chamber 111, the outer ejector pipe 240 is connected to the gas pipeline, the outer ejector pipe 240 is connected to the gas distribution plate 110 and inputs gas to the outer mixing chamber 112, and the smoke ejector pipe 120 is arranged on the outside of the outer fire cover 220, that is, the smoke ejector pipe 120 is located on the outside of the flame, which is conducive to the drainage of high-temperature smoke, and the smoke ejector pipe 120 is close to the flame, which can absorb the dissipated heat and improve the utilization rate of heat.

[0071] It is understandable that if Figure 8 As shown, the inner ejector tube 230 and the outer ejector tube 240 are fixedly connected to the lower side of the gas distribution plate 110 . The inner ejector tube 230 and the outer ejector tube 240 are assembled into one body and have sufficient structural strength to support the gas distribution plate assembly 100 .

[0072] Reference Figures 6 to 8 It can be understood that the injector 130 is mounted on the mounting frame 140, and the mounting frame 140 is fixedly connected to the external ejection tube 240. The position of the injector 130 is fixed by the mounting frame 140 to ensure stability and reliability in use.

[0073] Reference Fig.10 It can be understood that the middle part of the mounting frame 140 has a circular ring 141, and the circular ring 141 is mounted on the outer ejector tube 240. The outer ejector tube 240 has a step that matches the circular ring 141 to limit the mounting frame 140 in the up and down directions. The structure is simple and the assembly is easy. The mounting frame 140 is provided with a plurality of air holes 142, and the plurality of air holes 142 are distributed around the circular ring 141. The air holes 142 allow air to pass through, which is helpful for combustion. In addition, the mounting frame 140 is circular and slightly larger than the outer contour of the smoke ejector tube 120. The mounting frame 140 can be used to receive dripping water, oil and other liquids, which is easy to clean.

[0074] Reference Figure 2 It can be understood that the gas distribution plate 110 is provided with a gas delivery channel 115, and the gas delivery channel 115 is used to connect the external ejector tube 240 and the external gas mixing chamber 112 to deliver the mixed gas of the fuel gas and air in the external ejector tube 240 to the external gas mixing chamber 112. There are three gas delivery channels 115, and the three gas delivery channels 115 are evenly distributed on the inner side of the external gas mixing chamber 112 in the circumferential direction.

[0075] It can be understood that the gas outlet 122 of the smoke ejector pipe 120 is connected to the outside of the external mixing chamber 112, and the gas transported by the smoke ejector pipe 120 and the gas transported by the gas delivery channel 115 have opposite flow directions. Therefore, the gas outlet 122 and the gas delivery channel 115 are set to be staggered with each other, or at least partially staggered, to prevent the gas delivery channel 115 from being opposite to the gas outlet 122, and the gas outlet of the gas delivery channel 115 is opposite to the gas outlet 122, which is beneficial to reduce mutual interference between airflows.

[0076] A third aspect of the present invention provides a gas cooker, comprising a burner 200 according to the second aspect of the present invention. The gas cooker generally comprises a panel, and the burner 200 is located in a hole opened in the panel. A cooker bracket is also provided on the panel, and the cooker bracket is generally annular and surrounds the burner 200. When the gas cooker is in use, the cooker is placed on the cooker bracket, and the burner 200 is located below the cooker. A mixture of gas and air is transported via a gas distribution plate 110 of the burner 200, and the mixture in an outer mixing chamber 112 is ejected from a fire hole of an outer fire cover 220 for combustion, and the mixture in an inner mixing chamber 111 is ejected from a fire hole of an inner fire cover 210 for combustion, thereby heating the cooker.

[0077] The burner 200 has a flue gas ejector 120 and an injector 130. The nozzle 131 of the injector 130 ejects an ejection airflow toward the air inlet 121 of the flue gas ejector 120. There is a gap between the ejection airflow and the inner wall of the flue gas ejector 120. The ejection airflow is used to drive the flue gas outside the gas distribution plate 110 into the flue gas ejector 120. The high-temperature flue gas is transported to the outer mixing chamber 112 and / or the inner mixing chamber 111 through the flue gas ejector 120, thereby increasing the temperature of the mixed gas in the outer mixing chamber 112 and / or the inner mixing chamber 111, recycling the heat carried by the flue gas, improving the utilization rate of the heat, and promoting the secondary combustion of the gas carried in the flue gas, thereby improving the combustion efficiency and facilitating energy saving and consumption reduction.

[0078] Reference Figures 9 to 11 It can be understood that the gas cooker is provided with an energy collecting plate 300, and the energy collecting plate 300 has a plurality of support plates 301 for supporting the cooker. The energy collecting plate 300 is usually annular, and the energy collecting plate 300 surrounds the burner 200. The inner wall of the energy collecting plate 300 is an inclined surface to prevent the leakage of combustion energy and improve the utilization rate of heat. Moreover, the energy collecting plate 300 can block part of the smoke and reduce the leakage of smoke, and has a gathering function. Therefore, the smoke ejector 120 is arranged inside the energy collecting plate 300, which is conducive to guiding the smoke into the smoke ejector 120 and improving the flow rate of the guided smoke.

[0079] Reference Fig.12It can be understood that the energy focusing disk 300 has an inner cavity for gathering smoke, and along the up and down directions, the air inlet 121 of the smoke ejector 120 is at the upper part of the inner cavity, so that sufficient smoke is distributed around the air inlet 121 of the smoke ejector 120, and the ejection airflow ejected by the ejector 300 drives the smoke into the smoke ejector 120 quickly and smoothly.

[0080] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A gas distribution plate assembly for a burner, characterized in that: include: A gas distribution plate, the gas distribution plate having an inner gas mixing chamber and an outer gas mixing chamber; A smoke ejector pipe is connected to the gas distribution plate, the gas outlet of the smoke ejector pipe is connected to the outer gas mixing chamber and / or the inner gas mixing chamber, and the gas inlet of the smoke ejector pipe is located outside the gas distribution plate; the smoke ejector pipe surrounds the outer side of the gas distribution plate and absorbs the heat of the flame to heat the gas in the smoke ejector pipe; The injector is used to inject the induced airflow into the air inlet.

2. The gas distribution plate assembly according to claim 1, characterized in that: The two smoke ejector pipes are provided, and the two smoke ejector pipes are circumferentially distributed around the gas distribution plate.

3. The gas distribution plate assembly according to claim 2, characterized in that: The smoke ejector pipe is arc-shaped, and the rotation directions of the two smoke ejector pipes are consistent.

4. The gas distribution plate assembly according to claim 1 or 2, characterized in that: The smoke ejector pipe is provided with a straight section, the air inlet is arranged on the straight section, and the axis of the straight section is arranged colinearly with the axis of the ejector.

5. The gas distribution plate assembly according to claim 1 or 2, characterized in that: The gas outlet is connected to the external gas mixing chamber, and the axis of one end of the smoke ejector pipe provided with the gas outlet is arranged along the tangent line of the external gas mixing chamber.

6. The gas distribution plate assembly according to claim 1, characterized in that: The gas distribution plate and the smoke ejector pipe are integrally formed.

7. The gas distribution plate assembly according to claim 1, characterized in that: The gas distribution plate includes an upper plate body and a lower plate body, and the smoke ejector pipe includes an upper tube body and a lower tube body. The upper tube body is integrally formed with the upper plate body, and the lower tube body is integrally formed with the lower plate body.

8. The gas distribution plate assembly according to claim 7, characterized in that: The upper plate body and the lower plate body are connected by fasteners, and / or the upper tube body and the lower tube body are connected by fasteners.

9. The gas distribution plate assembly according to claim 1, characterized in that: The injector is provided with a connecting pipe structure, and the connecting pipe structure is used for connecting to a gas pipeline.

10. A burner, characterized in that It comprises the gas distribution plate assembly as claimed in any one of claims 1 to 9.

11. The burner according to claim 10, characterized in that It also includes an inner fire cover, an outer fire cover, an inner ejector pipe and an outer ejector pipe, the inner fire cover is connected to the gas distribution plate and is connected to the inner gas mixing chamber, the outer fire cover is connected to the gas distribution plate and is connected to the outer gas mixing chamber, the outer ejector pipe is connected to the gas distribution plate and supplies gas to the outer gas mixing chamber, the inner ejector pipe is connected to the gas distribution plate and supplies gas to the inner gas mixing chamber, and the smoke ejector pipe is located on the outside of the outer fire cover.

12. The burner according to claim 11, characterized in that The ejector is connected with a mounting frame, and the mounting frame is fixedly connected to the outer ejection tube.

13. The burner according to claim 11, characterized in that The gas distribution plate is provided with a gas delivery channel connecting the external ejector tube and the external gas mixing chamber, and the gas outlet is at least partially staggered from the gas delivery channel.

14. A gas cooker, characterized in that: Comprising a burner as claimed in any one of claims 10 to 13.

15. The gas cooker according to claim 14, characterized in that: It also includes an energy-gathering disk surrounding the burner, and the smoke ejector is located inside the energy-gathering disk.

16. The gas cooker according to claim 15, characterized in that: The smoke ejector pipe is located above the inner bottom surface of the energy focusing disk.

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