Ejector, upper air inlet burner and gas stove

Abstract

The present application discloses an ejector, an upper air intake burner and a gas stove, which solve the technical problem of low heat load of upper air intake gas stoves in the prior art. The ejector provided by the present application includes an air mixing disk and an ejector tube connected to the air mixing cavity of the air mixing disk. At least one inner partition is provided inside the ejector tube, so that at least part of the tube cavity of the ejector tube is divided into two or more channel branches. Therefore, in the ejector provided by the present application, the ejector tube provided with the inner partition has two or more ejection channels, so it can be connected to multiple nozzles at the same time. By increasing the contact area between the high-speed fluid and the air, it is easier to entrain the primary air, thereby improving the ejection capacity of the ejector. Moreover, each channel branch is separated by an inner partition and is independent of each other, which can prevent the airflow interference caused by the ejection of multiple nozzles and improve the primary air coefficient. In addition, the total volume of the ejector tube is small, which is more suitable for the limited space structure of the upper air intake burner.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen appliances, and specifically relates to an ejector, an upper air inlet burner and a gas stove. Background Art

[0002] Household gas stove burners are available in two types, depending on the primary air intake method: down-intake (primary air is supplied below the panel) and up-intake (primary air is supplied above the panel). Up-intake burners draw both primary and secondary air from above the panel, and the bottom shell is fully sealed. Compared to traditional down-intake burners, up-intake burners are safer and can eliminate problems such as nozzle blockage by foreign matter.

[0003] However, due to the limited space structure, the ejection capacity of the ejector tube of the upper air inlet burner is not ideal, which leads to a series of combustion problems, such as excessive flue gas and yellow flame. As a result, the heat load of the upper air inlet burner is generally small and cannot meet the requirements of high load. Summary of the Invention

[0004] In order to solve the technical problem that the current gas stove cannot meet the requirements of high load, the present application provides an ejector, an upper air inlet burner and a gas stove.

[0005] A technical solution adopted in this application is to provide an ejector, comprising:

[0006] An air mixing disk is provided with an air mixing cavity;

[0007] an ejector tube, connected to the gas mixing chamber;

[0008] At least one inner partition is arranged in the ejector tube along the air inlet direction, so as to separate at least a part of the lumen of the ejector tube into two or more channel branches.

[0009] As can be seen from the above technical solution, the ejector provided by this application includes an air mixing disk and an ejector tube connected to the mixing chamber of the mixing disk. At least one internal baffle is disposed within the ejector tube, arranged along the air intake direction. This internal baffle divides at least a portion of the ejector tube's lumen into two or more branch channels. Therefore, in the ejector provided by this application, the ejector tube equipped with the internal baffle has two or more ejection channels, allowing simultaneous connection to multiple nozzles. This increases the contact area between the high-speed fluid and the air, making it easier to entrain primary air, thereby improving the ejector's ejection capacity. Furthermore, the internal baffle separates and isolates each branch channel, preventing airflow interference caused by multiple nozzles and improving the primary air coefficient.

[0010] The ejector provided in this application utilizes an internal baffle within the ejector tube to create two or more branching channels. This reduces the overall volume of the ejector tube, making it more suitable for use in the limited spaces of top-inlet burners. Compared to related technologies that employ multiple ejector tubes to improve burner ejection performance, resulting in complex ejector structures and potential safety hazards such as air leakage, the ejector provided in this application is simple in structure and compact in size, offering significant potential for widespread application.

[0011] In some embodiments, the ejector tube has a throat section with a cross-sectional area smaller than that of the air inlet end, and the inner partition is provided on the throat section.

[0012] By installing a throat section in the ejector tube, the ejector tube can utilize the Venturi effect to improve the primary air coefficient, as its cross-sectional area is smaller than that of the inlet end of the ejector tube. Due to the smaller cross-sectional area of the throat section, the airflow velocity in the throat section is greater than that at the inlet end, making it prone to collision, superposition, and mutual interference. By installing an internal baffle in the throat section, the airflow can be separated, allowing the gas-air mixture to flow independently within the confined space, preventing airflow interference caused by dual or multiple nozzle ejection, and improving the primary air coefficient.

[0013] In some embodiments, one end of the inner baffle is flush with the air inlet end of the throat section; and the length of the inner baffle is no greater than the length of the throat section.

[0014] Since both the fuel gas and primary air enter through the air inlet end of the ejector pipe, by setting one end of the inner partition flush with the air inlet end of the throat pipe section, the air inlet end of the throat pipe section is ensured to be divided into multiple channels, preventing airflow interference caused by double nozzles or multiple nozzles, which is conducive to the entry of fuel gas and primary air.

[0015] In some embodiments, the throat section is a straight pipe section with a waist-shaped cross section; the inner partition is located on the central symmetry plane of the straight pipe section.

[0016] By setting the throat section as a straight pipe section with a waist-shaped cross-section, the waist-shaped structure has a long straight side, which facilitates the connection between the throat section and the mixing plate, and the arc section of the waist-shaped structure is conducive to reducing the airflow resistance; the inner partition is located on the central symmetry plane of the straight pipe section, ensuring that the cross-sectional area of each channel branch is equal and the primary air is evenly distributed.

[0017] In some embodiments, the mixing plate includes an outer ring mixing plate and an inner ring mixing plate;

[0018] There are two ejector pipes, namely an inner ring ejector pipe and an outer ring ejector pipe, the inner ring ejector pipe is connected to the gas mixing cavity of the inner ring gas mixing disk, and the outer ring ejector pipe is connected to the gas mixing cavity of the outer ring gas mixing disk;

[0019] The inner partition is provided with one, and the inner partition is arranged in the outer ring ejector tube.

[0020] The combustion area is increased by configuring the ejector with a multi-ring structure. Since the outer ring has a greater ejection capacity, an inner baffle is placed within the outer ring ejector tube, creating multiple channel branches within the tube, enabling docking with multiple nozzles and improving the outer ring's ejection capacity.

[0021] In some embodiments, an annular gap is provided between the inner ring mixing disk and the outer ring mixing disk; the inner ring mixing disk is a ring structure having a central cavity, and the central cavity of the inner ring ejector is in communication with the annular gap.

[0022] By setting the inner ring mixing disk into a ring shape, the center of the inner ring mixing disk is a cavity connected to the outside world, and the central cavity of the inner ring mixing disk is connected to the annular gap, the secondary air entry conditions of the central fire and the outer ring fire can be improved, thereby improving the combustion efficiency.

[0023] In some embodiments, the air inlet end of the inner ring ejector tube and the air inlet end of the outer ring ejector tube are located on the same side;

[0024] The ejector further includes an outer partition plate, which separates the air inlet area of the inner ring ejector tube from the air inlet area of the outer ring ejector tube.

[0025] By arranging the air inlet ends of the inner and outer ring ejector tubes on the same side, it is convenient to arrange the nozzles and the corresponding gas pipelines; by arranging an outer partition, the outer partition separates the air inlet area of the inner ring ejector tube from the air inlet area of the outer ring ejector tube, so that the primary air inlet channel of the inner ring ejector tube is separated from the primary air inlet channel of the outer ring ejector tube, preventing the inner and outer ring ejector tubes from interfering with each other during the process of ejecting primary air, causing the primary air coefficient to decrease, thereby improving the ejection performance of the burner.

[0026] In some embodiments, the air inlet end of the inner ring ejector tube and the air inlet end of the outer ring ejector tube are both provided with a diverter baffle, and the diverter baffle separates the primary air intake area from the secondary air intake area.

[0027] By setting a diversion baffle, the primary air intake area and the secondary air intake area of the ejector can be separated, avoiding the primary and secondary air from competing with each other, thereby improving the ejection performance of the burner.

[0028] In some embodiments, a convex edge is provided at the air inlet of the inner ring ejector tube and the air inlet of the outer ring ejector tube; the convex edge is connected to the outer ring mixing disk, and the total length of the convex edge is greater than the outer ring radius of the outer ring mixing disk, and the convex edge constitutes the diversion baffle.

[0029] By setting a convex edge at the air inlet of the ejector tube, and the convex edge is connected to the outer ring mixing disk, the convex edge is located between the gas nozzle and the annular gap, and because the length of the convex edge is long and exceeds the outer ring radius of the outer ring mixing disk, it can effectively separate the primary air intake area close to the gas nozzle and the annular gap for secondary air intake.

[0030] Another technical solution adopted in this application is to provide an upper air inlet burner, comprising:

[0031] The ejector mentioned above;

[0032] The base bracket is provided with two or more nozzles, and the air inlet end of the ejector tube provided with an inner partition is equipped with two or more nozzles, and the two or more nozzles correspond one-to-one to the two or more channel branches;

[0033] The fire cover is arranged on the mixing plate of the ejector.

[0034] By arranging multiple nozzles at the air inlet end of the ejector tube with an inner baffle, multi-nozzle injection is achieved, which can increase the contact area between the high-speed fluid and the air, making it easier to entrain the primary air, thereby improving the ejection capacity of the upper air inlet burner.

[0035] In some embodiments, the fire cover includes an outer ring fire cover and an inner ring fire cover, and both the outer ring fire cover and the inner ring fire cover are annular.

[0036] By setting the inner and outer ring fire covers in a ring shape, it is convenient for secondary air to enter, which can improve the secondary air entry conditions of the center fire and the outer ring fire, thereby improving the combustion efficiency.

[0037] Another technical solution adopted in the present application is to provide a gas stove comprising the above-mentioned upper air inlet burner.

[0038] The gas stove provided by the present application is provided with an upper air inlet burner with the above-mentioned ejector. Since both the primary air and the secondary air enter from the ejector, which is located above the gas stove panel, the gas stove adopts an upper air inlet method. Based on the structural design of the ejector tube in the ejector, without affecting the ejection capacity of the ejector, the ejector tube is smaller in size and more suitable for the limited space structure of the upper air inlet burner. The ejector tube adopts a multi-nozzle ejection structure. By increasing the contact area between the high-speed fluid and the air, it is easier to entrain the primary air, thereby improving the ejection capacity of the upper air inlet burner and improving the thermal efficiency of the gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A top view of the ejector in an embodiment of the present application is shown.

[0041] Figure 2 Shown Figure 1 AA cross-section of the ejector.

[0042] Figure 3 Shown Figure 1 Schematic diagram of the structure of the ejector at a certain perspective.

[0043] Figure 4 Shown Figure 1 Schematic diagram of the structure of the ejector from another perspective.

[0044] Figure 5 A schematic structural diagram of an upper air inlet burner in an embodiment of the present application is shown.

[0045] Figure 6 Shown Figure 5 Schematic diagram of the structure of the base bracket in the upper air inlet burner.

[0046] Figure 7 Shown Figure 5 Exploded view of an upper air inlet burner.

[0047] Figure 8 A schematic structural diagram of a gas stove in an embodiment of the present application is shown.

[0048] Explanation of the accompanying reference numerals: 100 - ejector; 10 - outer ring mixing disk, 11 - mixing chamber of the outer ring mixing disk; 20 - inner ring mixing disk, 21 - mixing chamber of the inner ring mixing disk, 22 - central cavity; 30 - outer ring ejector pipe, 31 - throat section, 32 - air inlet section, 33 - transition section, 34 - channel branch; 40 - inner ring ejector pipe; 50 - inner partition; 60 - outer partition; 70 - diverter baffle, 71 - convex edge; 80 - annular gap; 90 - positioning groove; a - air inlet end.

[0049] 1100-upper air inlet burner; 100-injector; 200-base bracket, 201-nozzle, 202-positioning block; 300-inner ring fire cover; 400-outer ring fire cover.

[0050] 1000-Gas stove; 1100-Top air burner; 1200-Cooker support; 1300-Panel. DETAILED DESCRIPTION

[0051] 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 in 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.

[0052] In addition, this application may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0053] In the prior art, horizontally arranged, top-inlet burners in gas stoves have ejector tubes mounted on the base or with only one ejector tube in each inner or outer ring. This results in a low heat load, low efficiency, and an inability to meet high load requirements. The root cause of these drawbacks is that the limited space on the panel of top-inlet burners makes it difficult to lengthen the ejector tube structure, resulting in incomplete premixing of gas and air, low combustion efficiency, and difficulty increasing the load.

[0054] The embodiments of the present application provide an ejector, an upper air inlet burner and a gas stove, which adopt an upper air inlet solution and can at least to a certain extent solve the technical problem of low heat load of upper air inlet gas stoves in the prior art while ensuring safety.

[0055] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0056] Example 1:

[0057] The embodiment of the present application provides an ejector 100, such as Figures 1 to 4 The figure shows the overall structure and cross-sectional view of the ejector 100 at various viewing angles. Figure 7 The ejector 100 is a key component of the upper air inlet burner 1100 of the gas stove 1000. It ejects gas and provides primary and secondary air. Its structure directly impacts the thermal efficiency of the gas stove 1000. The ejector 100 includes a mixing plate and an ejector pipe located below the mixing plate. The mixing plate is provided with a mixing chamber for the flow of a gas-air mixture. The mixing chamber can be circular or annular in shape. The ejector pipe has an inlet end a for the intake of gas and air and an outlet end for the output of the gas-air mixture.

[0058] See Figure 2The ejector 100 includes at least one internal baffle 50, which is disposed in at least one ejector tube of the ejector 100. The internal baffle 50 is arranged within the ejector tube along the air intake direction, that is, the internal baffle 50 is parallel to the axial direction of the ejector tube, thereby dividing at least a portion of the lumen of the ejector tube into two or more channel branches 34. When multiple internal baffles 50 are disposed in the ejector tube, the multiple internal baffles 50 can be arranged in parallel or in a cross-arrangement, such as a cross-arrangement.

[0059] The ejector tube, equipped with an internal baffle 50, has two or more ejection channels, allowing it to interface with multiple nozzles 201 simultaneously. This increases the contact area between the high-speed fluid and the air, making it easier to entrain primary air, thereby improving the ejection capability of the ejector 100. Furthermore, each channel branch 34 is separated and independent by the internal baffle 50, preventing airflow interference caused by the ejection of multiple nozzles 201 and improving the primary air coefficient. Compared to the ejection structure of the related art that uses multiple ejector tubes to improve the ejection performance of the burner, the internal baffle 50 provided within the ejector tube creates two or more channel branches 34, resulting in a smaller total ejector tube volume and making it more suitable for the limited space of the upper air intake burner 1100.

[0060] In order to improve the ejection capacity of the ejector tube, the ejector tube of the ejector 100 can be designed as a pipe structure with a "Venturi effect", and the Venturi effect is used to improve the primary air coefficient. In some embodiments, the cross-sectional area of a portion of the ejector tube is smaller than the cross-sectional area of the air inlet end a, and the pipe section with the smaller cross-sectional area constitutes the throat section 31. The Venturi tube is a typical pipe structure with a "Venturi effect". That is to say, in the present application, the ejector tube can directly adopt the Venturi tube structure, or it can be set as a pipe structure in which the air inlet end a is a tapered pipe section and the remaining part is a straight pipe section with the same diameter as the small diameter end of the tapered pipe section. This application does not impose any restrictions.

[0061] Since the cross-sectional area of the throat section 31 is small, the flow velocity of the air in the throat section 31 is greater than that at the air inlet end a, and the air flows are prone to collision, superposition, and mutual interference. Figure 2 The inner baffle 50 is arranged in the throat section 31. The inner baffle 50 can separate the airflow so that the gas-air mixed airflow flows independently in a confined space, preventing the airflow interference caused by double nozzles or multiple nozzles, and improving the primary air coefficient.

[0062] Both gas and primary air enter through the inlet end a of the ejector tube. To prevent airflow interference caused by dual or multiple nozzle ejection, in certain embodiments, the end of the inner baffle 50 near the nozzle 201 is flush with the inlet end a of the throat section 31, ensuring that the inlet end a of the throat section 31 is divided into multiple channels, facilitating the entry of gas and primary air. The length of the inner baffle 50 is no greater than the length of the throat section 31. For example, in certain embodiments, the inner baffle 50 is the same length as the throat section 31, completely preventing airflow interference within the throat section 31. In other embodiments, the inner baffle 50 is shorter than the throat section 31, allowing the various channel branches 34 to communicate at the outlet end of the throat section 31, where the airflows collide and further mix, before the gas and air enter the mixing chamber of the mixing disk.

[0063] The cross-sectional shape of the ejector tube is usually circular or elliptical to reduce flow resistance. The cross-sectional shape of the ejector tube can also be other shapes, which can be determined according to the specific process and is not limited in this application. Figure 1 and Figure 3 In certain embodiments, the ejector tube includes an air intake section 32, a throat section 31, and a transition section 33, which are connected in sequence. Along the air intake direction, the cross-sectional area of the air intake section 32 tends to decrease, and the inlet of the air intake section 32 is the largest, which is convenient for the entry of gas and air. The throat section 31 is a straight pipe section with a waist-shaped cross section. By setting the throat section 31 as a straight pipe section with a waist-shaped cross section, the waist-shaped structure has a long straight side, which facilitates the connection between the throat section 31 and the mixing disk, and the arc section of the waist-shaped structure is conducive to reducing the flow resistance of the airflow. The function of the transition section 33 is to connect the throat section 31 with the mixing disk. Due to the height difference between the throat section 31 and the mixing disk, the transition section 33 is set as an inclined pipe section.

[0064] The inner partition 50 is located on the central symmetric plane of the straight pipe section of the waist-shaped structure, ensuring that the cross-sectional areas of the various channel branches 34 are equal and the primary air is evenly distributed.

[0065] For an ejector 100 having multiple ejector tubes, an internal baffle 50 may be installed in one or more of the ejector tubes, or in all of the ejector tubes. Accordingly, ejector tubes equipped with internal baffles 50 need to be equipped with the same number of nozzles 201 as channel branches 34. However, ejector tubes without internal baffles 50 can be equipped with an unlimited number of nozzles 201.

[0066] See also Figures 1 to 4Taking the dual-ring ejector 100 as an example, it has two mixing plates, namely the outer ring mixing plate 10 and the inner ring mixing plate 20. Both the outer ring mixing plate 10 and the inner ring mixing plate 20 adopt single-tube ejection, that is, only two ejection tubes are provided in the entire ejector 100, namely the inner ring ejection tube 40 and the outer ring ejection tube 30. The inner ring ejection tube 40 is connected to the mixing chamber 21 of the inner ring mixing plate 20, and the outer ring ejection tube 30 is connected to the mixing chamber 11 of the outer ring mixing plate 10. Considering the greater demand for outer ring gas ejection, an inner baffle 50 is only provided in the outer ring ejection tube 30, and only one inner baffle 50 is provided in the outer ring ejection tube 30, forming two channel branches 34 inside. Through the above structure, on the basis of the structure of the traditional double-tube injection upper air intake burner 1100 with single inner and outer ring nozzles 201, the outer ring injection tube 30 adopts the injection structure of the double nozzle 201. By increasing the contact area between the high-speed fluid and the air, it is easier to draw in the air once, thereby improving the injection capacity of the upper air intake burner 1100.

[0067] In some embodiments, the inlet end a of the inner ejector tube 40 and the inlet end a of the outer ejector tube 30 are located on the same side and in close proximity, facilitating the placement of the nozzle 201 and the corresponding gas pipeline. Like the outer ejector tube 30, in some embodiments, the inner ejector tube 40 also has a throat section, causing the inner ejector channel to initially narrow and then expand in the direction of air intake, leveraging the Venturi effect to increase the primary air coefficient.

[0068] The outer ring mixing disk 10 is annular, and the inner ring mixing disk 20 can adopt an annular groove structure with a cavity in the center; the inner ring mixing disk 20 can also adopt a circular groove structure. In order to improve the secondary air, in some embodiments, the inner ring mixing disk 20 and the outer ring mixing disk 10 are both annular, and the central cavity 22 of the inner ring mixing disk 20 facilitates the entry of secondary air into the inner ring. In some embodiments, the outer ring diameter of the inner ring mixing disk 20 is smaller than the inner ring diameter of the outer ring mixing disk 10, so that an annular gap 80 is formed between the inner ring mixing disk 20 and the outer ring mixing disk 10. When the inner ring mixing disk 20 and the outer ring mixing disk 10 are concentrically arranged, the annular gap 80 is a circular ring. The annular gap 80 and the central cavity 22 of the inner ring mixing disk 20 are respectively connected to the outside world. Through the above structure, the secondary air entry of the center fire and the outer ring fire can be improved, thereby improving the combustion efficiency.

[0069] In order to prevent the inner and outer rings from competing for air, in some embodiments, the ejector 100 also includes an outer partition 60, which separates the air intake area of the inner ring ejector tube 40 from the air intake area of the outer ring ejector tube 30, so that the primary air intake channel of the inner ring ejector tube 40 is separated from the primary air intake channel of the outer ring ejector tube 30, preventing the inner and outer ring ejector tubes 30 from interfering with each other during the process of ejecting primary air, causing the primary air coefficient to decrease, thereby improving the ejection performance of the burner.

[0070] To prevent the primary and secondary air from competing with each other, in certain embodiments, the air inlet end a of the inner ring ejector tube 40 and the air inlet end a of the outer ring ejector tube 30 are both provided with a diverter baffle 70. The diverter baffle 70 can separate the primary air intake area (near the nozzle 201) and the secondary air intake area (the annular gap 80 and the inner ring central cavity 22) of the ejector 100, thereby preventing the primary and secondary air from competing with each other and improving the ejection performance of the burner. The diverter baffle 70 can adopt a baffle structure of any shape, and the specific shape is not limited in this application.

[0071] See Figure 3 In some embodiments, an outwardly protruding ridge 71 is provided at the air inlet of the inner ring ejector tube 40 and the outer ring ejector tube 30. The ridge 71 is connected to the outer ring mixing disk 10, and the ridges 71 of the inner ring ejector tube 40 and the outer ring ejector tube 30 are connected as a whole, so that the total length of the ridge 71 is greater than the outer ring radius of the outer ring mixing disk 10. The ridge 71 is used as a diverter baffle 70. The diverter baffle 70 has a large coverage range and can effectively separate the primary air intake area close to the gas nozzle 201 from the annular gap 80 for secondary air intake.

[0072] Example 2:

[0073] Based on the same inventive concept, the embodiment of the present application provides an upper air intake burner 1100. The upper air intake burner 1100 is an essential component of the gas stove 1000. The ejector 100 and the nozzle 201 of the upper air intake burner 1100 are both located above the panel 1300 of the gas stove 1000. Both the primary air and the secondary air are introduced from the panel 1300, so it is "upper air intake". The upper air intake burner 1100 mainly includes the ejector 100, a base bracket 200 and a fire cover. The base bracket 200 is mainly used to connect to the gas pipeline and spray gas to the ejector 100 through the nozzle 201. The fire cover is located on the mixing plate of the ejector 100, and a plurality of fire holes are provided on the fire cover for gas combustion. The specific number of flame covers depends on the number of rings of the upper air inlet burner 1100. Typically, a double-ring upper air inlet burner 1100 is equipped with two inner and outer flame covers, while a triple-ring upper air inlet burner 1100 is equipped with three flame covers: inner, middle, and outer rings. The number of nozzles 201 on the base bracket 200 is determined by the number of air inlets of the ejector tube. Typically, each air inlet is equipped with a nozzle 201.

[0074] See Figure 5 and Figure 7 , which is the overall structure diagram and explosion diagram of the upper air inlet burner 1100 in this embodiment. The upper air inlet burner 1100 in this embodiment includes an ejector 100, a base bracket 200 and a fire cover, wherein the ejector 100 adopts the ejector 100 of the above embodiment 1. The specific structure is referred to in embodiment 1 and will not be repeated here. Figure 6 , more than two nozzles 201 are provided on the base bracket 200, the ejector tube with the inner partition 50 is configured with the same number of nozzles 201 as the channel branches 34, and the nozzles 201 correspond to the channel branches 34 one by one, and the ejector tube without the inner partition 50 only needs to be configured with one nozzle 201.

[0075] Based on the dual-ring structure of the ejector 100 of Example 1, two corresponding fire covers are also provided: an inner ring fire cover 300 and an outer ring fire cover 400. In certain embodiments, both the inner ring fire cover 300 and the outer ring fire cover 400 are annular. By providing both the inner and outer ring fire covers 400 with annular shapes, secondary air inlet is facilitated, improving the secondary air inlet conditions for both the center fire and the outer ring fire, thereby enhancing combustion efficiency.

[0076] In the ejector 100 according to Example 1, both the inner and outer rings are single ejector tubes, and an inner partition 50 is provided inside the outer ring ejector tube 30. Figure 6 Three nozzles 201 are correspondingly arranged on the base bracket 200, one nozzle 201 is arranged at the air inlet end a of the inner ring ejector tube 40, and two nozzles 201 are arranged at the air inlet end a of the outer ring ejector tube 30, and the two nozzles 201 correspond one-to-one to the two channel branches 34, realizing multi-nozzle injection, which can increase the contact area between high-speed fluid and air, and make it easier to entrain air once, thereby improving the ejection ability of the upper air inlet burner 1100.

[0077] To facilitate alignment of the ejector tubes and nozzles 201, in some embodiments, positioning slots 90 are provided on the ejector 100, and corresponding positioning blocks 202 are provided on the base support 200. During installation, the positioning blocks 202 are inserted into the positioning slots 90, aligning each nozzle 201 with its corresponding ejector tube, facilitating installation. Furthermore, the positioning slots 90 and positioning blocks 202 cooperate to prevent relative rotation between the ejector 100 and the base support 200, which could result in gas leakage.

[0078] Example 3:

[0079] Based on the same inventive concept, the present embodiment provides a gas stove 1000. Similar to conventional gas stoves 1000, this embodiment primarily includes a panel 1300, a burner, a cookware stand 1200 for placing cookware, and other necessary accessories such as a thermocouple and an ignition pin. Specifically, this embodiment employs a top-intake gas stove 1000, meaning the ejector 100 is located above the panel 1300, and both primary and secondary air enter from above the panel 1300.

[0080] See also Figure 8Unlike the prior art, the burner of the gas stove 1000 of this embodiment adopts the upper air inlet burner 1100 of the aforementioned embodiment 2. The specific structure is similar to that of embodiment 2 and will not be described in detail here. Since this embodiment does not improve the panel 1300, bracket, ignition pin, and other accessories of the gas stove 1000, the specific structure can be referred to in the prior art. Other undescribed structures of the gas stove 1000 can also be referred to in the relevant prior art disclosures and will not be described in detail here.

[0081] The gas stove 1000 provided herein is equipped with an upper air intake burner 1100 equipped with the aforementioned ejector 100. Due to the structural design of the ejector tube within ejector 100, the ejector tube is smaller in size without compromising the ejection capacity of ejector 100, making it more suitable for the confined space of upper air intake burner 1100. The ejector tube utilizes an ejection structure with multiple nozzles 201. By increasing the contact area between high-speed fluid and air, primary air is more easily entrained, thereby enhancing the ejection capacity of upper air intake burner 1100 and improving the combustion efficiency of gas stove 1000.

[0082] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0083] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application.

[0084] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0085] 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.

[0086] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0088] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0089] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An ejector, characterized in that: Applicable to an upward air inlet burner, the ejector comprises: An air mixing plate is provided with an air mixing cavity; the air mixing plate comprises an outer ring air mixing plate and an inner ring air mixing plate; An ejector pipe is connected to the mixing chamber, and the ejector pipe is located below the mixing disk and connected to the mixing disk; two ejector pipes are provided, namely an inner ring ejector pipe and an outer ring ejector pipe, the inner ring ejector pipe is connected to the mixing chamber of the inner ring mixing disk, and the outer ring ejector pipe is connected to the mixing chamber of the outer ring mixing disk; the air inlet end of the inner ring ejector pipe and the air inlet end of the outer ring ejector pipe are located on the same side; the air inlet end of the inner ring ejector pipe and the air inlet end of the outer ring ejector pipe are both provided with a diverter baffle, and the diverter baffle separates the primary air intake area from the secondary air intake area; An outer baffle, the outer baffle separating the air intake area of the inner ring ejector pipe and the air intake area of the outer ring ejector pipe; the outer baffle, the diverter baffle and the outer ring mixing disk are all connected; and, At least one inner partition is arranged in the outer ring ejector tube along the air inlet direction, so as to separate at least a part of the lumen of the ejector tube into two or more channel branches.

2. The ejector according to claim 1, wherein: The ejector tube has a throat section with a cross-sectional area smaller than that of the air inlet end, and the inner partition is arranged on the throat section.

3. The ejector according to claim 2, wherein: One end of the inner baffle is flush with the air inlet end of the throat section; the length of the inner baffle is not greater than the length of the throat section.

4. The ejector according to claim 2, wherein: The throat section is a straight pipe section with a waist-shaped cross section; the inner partition is located on the central symmetric plane of the straight pipe section.

5. The ejector according to any one of claims 1 to 4, characterized in that: The inner partition is provided with one, and the inner partition is arranged in the outer ring ejector tube.

6. The ejector according to claim 5, wherein: An annular gap is provided between the inner ring gas mixing disk and the outer ring gas mixing disk; the inner ring gas mixing disk is a ring structure with a central cavity, and the central cavity of the inner ring ejector is in communication with the annular gap.

7. The ejector according to any one of claims 1 to 4, characterized in that: The air inlet of the inner ring ejector tube and the air inlet of the outer ring ejector tube are both provided with convex edges; the convex edges are connected to the outer ring mixing disk, and the total length of the convex edges is greater than the outer ring radius of the outer ring mixing disk, and the convex edges constitute the diversion baffle.

8. An upward air inlet burner, characterized in that: include: The ejector according to any one of claims 1 to 7; The base bracket is provided with two or more nozzles, and the air inlet end of the ejector tube provided with an inner partition is equipped with two or more nozzles, and the two or more nozzles correspond one-to-one to the two or more channel branches; The fire cover is arranged on the mixing plate of the ejector.

9. The upward air inlet burner according to claim 8, characterized in that: The fire cover comprises an outer ring fire cover and an inner ring fire cover, and both the outer ring fire cover and the inner ring fire cover are ring-shaped.

10. A gas stove, characterized in that: Including the up-air burner according to claim 8 or 9.

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