An ejector, an updraft burner and a gas stove

Abstract

The application discloses an ejector, an upwind burner and a gas stove, and solves the technical problems of a large number of ejector pipes and a large overall volume in the prior art. The ejector comprises an outer gas distribution disc, an inner gas distribution disc, a gas channel and an ejector pipe. A first gas mixing cavity of the outer gas distribution disc and a second gas mixing cavity of the inner gas distribution disc are communicated and integrated through the gas channel. The required gas of the middle ring is provided by the outer ring, so that the ejector pipe for providing the gas for the inner gas distribution disc can be cancelled, the cost of the ejector is reduced, the gas channel is located between the outer gas distribution disc and the inner gas distribution disc, so that the gas channel simultaneously serves as a support for connecting the outer gas distribution disc and the inner gas distribution disc. The ejector pipe is communicated with the first gas mixing cavity. Since the outer gas distribution disc where the first gas mixing cavity is located is located outside the inner gas distribution disc, the first gas mixing cavity has a larger circumferential length, so that the gas-air mixture flow is facilitated to enter the second gas mixing cavity of the inner gas distribution disc after further mixing. The ejector has the advantages of simple structure and low cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kitchen utensils, and particularly relates to an ejector, an updraft burner and a gas stove. BACKGROUND

[0002] Household gas stove burners have down-draft burners (primary air is supplemented below the panel) and up-draft burners (primary air is supplemented above the panel) according to the air inlet mode of primary air. The primary air and the secondary air of the up-draft burner are both from above the panel, and the bottom shell can be fully sealed. Compared with the traditional down-draft burner, the up-draft burner is safer and can solve the problem of nozzle blockage by foreign matter.

[0003] At present, the up-draft burner is generally provided with a multi-ring structure, and the mixing chambers of the inner and outer rings are in communication with the corresponding ejector pipes. The up-draft burner with the above multi-ring structure can meet the requirement of large load, but the number of ejector pipes is large, and the overall volume is large, thereby limiting the popularization and application of the up-draft burner. SUMMARY

[0004] To solve the technical problems that the number of ejector pipes is large and the overall volume is large in the existing gas stove, the application provides an ejector, an up-draft burner and a gas stove.

[0005] One of the technical solutions adopted by the application is to provide an ejector, which comprises:

[0006] An outer gas distribution disc, which has a first mixing chamber;

[0007] An inner gas distribution disc, which is located on the inner side of the outer gas distribution disc and has a second mixing chamber;

[0008] An air channel, which is arranged between the outer gas distribution disc and the inner gas distribution disc and is used for connecting the first mixing chamber and the second mixing chamber;

[0009] An ejector pipe, which is in communication with the first mixing chamber.

[0010] As can be known from the above technical solution, the ejector provided by the application also adopts a multi-ring structure, comprises an outer gas distribution disc and an inner gas distribution disc, and can increase the combustion area. The first mixing chamber of the outer gas distribution disc and the second mixing chamber of the inner gas distribution disc are connected as a whole through the air channel, the central required gas is provided by the outer ring, and thus the ejector pipe for providing the gas for the inner gas distribution disc can be cancelled, the cost of the ejector is reduced, the air channel is located between the outer gas distribution disc and the inner gas distribution disc, so that the air channel simultaneously serves as a support for connecting the outer gas distribution disc and the inner gas distribution disc. The ejector pipe is in communication with the first mixing chamber, and since the outer gas distribution disc where the first mixing chamber is located is located on the outer side of the inner gas distribution disc, the first mixing chamber has a larger circumferential length, so that the gas-air mixture flow can be further mixed and then enter the second mixing chamber of the inner gas distribution disc.

[0011] In some embodiments, the outer gas distribution disc is provided with through holes, one end of the gas channel communicates with the through holes, and the other end of the gas channel communicates with the through holes on the side wall of the inner gas distribution disc.

[0012] By setting one end of the gas channel to communicate with the through holes provided on the bottom of the outer gas distribution disc and the other end to communicate with the through holes provided on the side wall of the inner gas distribution disc, the gas-air mixture flowing into the first mixing chamber can enter the gas channel before combustion, ensuring the supply of gas to the inner gas distribution disc.

[0013] In some embodiments, the through holes are provided with two or more, and the two or more through holes are circumferentially spaced apart;

[0014] The number of gas channels is the same as the number of through holes, and the plurality of gas channels are spaced apart between the outer gas distribution disc and the inner gas distribution disc.

[0015] By setting a plurality of through holes and a plurality of gas channels, it is ensured that the gas-air mixture in the first mixing chamber uniformly and sufficiently enters the second mixing chamber, ensuring the combustion effect of the inner gas distribution disc.

[0016] In some embodiments, the ejector pipe is provided with two or more; two or more of the ejector pipes are circumferentially spaced apart in the same direction; and the through holes and the ejector pipes are circumferentially alternately distributed.

[0017] By communicating two or more ejector pipes on the outer gas distribution disc located on the outer side, each ejector pipe is circumferentially spaced apart, and each ejector pipe has the same rotational direction, which is clockwise or counterclockwise, so that the gas-air mixture flowing into the outer gas distribution disc from the ejector pipe rotates in the same direction, so that the gas-air mixture can be quickly and uniformly distributed at each position in the first mixing chamber, improving the combustion efficiency. And because each ejector pipe is circumferentially spaced apart, the space under the outer gas distribution disc can be reasonably utilized, so that the length of the ejector pipe can be increased, the ejecting capacity of the outer ring can be increased, the gas and air can be fully premixed in the ejector pipe, the primary air coefficient can be increased, thereby improving the combustion efficiency and increasing the heat load. By setting the through holes and the ejector pipes to be circumferentially alternately and spaced apart, the gas-air mixture in the first mixing chamber can enter the second mixing chamber as much as possible, ensuring the heat load of the inner gas distribution disc.

[0018] In some embodiments, the outer gas distribution disc is circumferentially provided with two or more communication ports for one-to-one communication with each of the ejector pipes; the communication ports are provided with cover plates, and the cover plates partially cover the communication ports, so that the uncovered communication ports constitute the gas outlet of the ejector channel;

[0019] The ejector pipe comprises a shell section and a flat pipe section, the shell section is connected with the gas outlet of the outer gas distribution disc, the shell section and the cover plate enclose the gas outlet section of the ejector channel, and the inside of the flat pipe section constitutes the gas inlet section of the ejector channel; the cross-sectional area of the gas outlet section of the ejector channel is larger than that of the gas inlet section.

[0020] By arranging the shell section and the cover plate, one part of the ejector channel is closer to the outer gas distribution disc, so as to better adapt to the limited space on the gas stove panel and facilitate increasing the length of the ejector pipe in the limited space. By arranging the ejector channel to be reduced first and then increased along the gas inlet direction, the primary air coefficient is increased by utilizing the Venturi effect.

[0021] In some embodiments, the upper surface of the cover plate is a plane, and the cover plate is flush with the cavity bottom of the first gas mixing cavity of the outer gas distribution disc; one end of the cover plate close to the gas outlet is provided with a baffle protruding from the cover plate.

[0022] By arranging the cover plate to be flush with the cavity bottom of the first gas mixing cavity of the outer gas distribution disc, the flow resistance of the first gas mixing cavity is reduced, so that the gas-air mixture flow can be quickly and uniformly distributed at each position of the first gas mixing cavity. By arranging the baffle on the cover plate and close to the gas outlet, the gas and air can be mixed more fully, and the gas flow can be more uniformly distributed in the cavity.

[0023] In some embodiments, the through hole is close to the gas outlet; a guide groove is arranged between the through hole and the gas outlet.

[0024] By arranging the through hole close to the gas outlet, the gas-air mixture flow entering the first gas mixing cavity can immediately enter the gas channel, thereby ensuring the gas supply of the inner gas distribution disc. By arranging the guide groove connecting the through hole and the gas outlet, the gas-air mixture flow can enter the gas channel before being burned, thereby ensuring the gas supply of the inner gas distribution disc.

[0025] In some embodiments, the inner gas distribution disc comprises:

[0026] an outer ring wall connected with the gas channel;

[0027] an inner ring wall located inside the outer ring wall;

[0028] a gas blocking plate fixedly installed between the outer ring wall and the inner ring wall, the outer ring wall, the inner ring wall and the gas blocking plate enclose the second gas mixing cavity; a plurality of through gas guide holes are arranged on the gas blocking plate.

[0029] By arranging the gas blocking plate with the gas guide holes, the flow rate of the gas-air mixture entering the second gas mixing cavity is reduced, thereby reducing the tendency of flame separation.

[0030] In some embodiments, the outer air distribution disc is provided with a flow distribution plate, which is close to the air inlet of the ejector pipe.

[0031] By providing the flow distribution plate, the air inlet channels of the primary air and the secondary air are separated, and the primary air coefficient is improved.

[0032] In some embodiments, the side wall of the outer air distribution disc and / or the inner air distribution disc is provided with a plurality of fire holes.

[0033] By providing the fire holes on the side wall of the outer air distribution disc and / or the inner air distribution disc, which are connected to the mixing chambers and the outside, the side wall of the air distribution disc can become part of the fire cover, thereby eliminating the fire cover component in the related art, and making the device structure simpler.

[0034] Another technical solution adopted in the present application is to provide an updraft burner, comprising:

[0035] The ejector described above;

[0036] A nozzle support provided with a nozzle for connecting the ejector pipe;

[0037] An inner fire cover arranged on the inner air distribution disc;

[0038] An outer fire cover arranged on the outer air distribution disc.

[0039] The updraft burner provided in the present application is provided with the ejector described above, which eliminates the central ejector pipe, and accordingly does not need to be provided with a nozzle for providing gas to the central ejector pipe, further simplifying the internal structure of the updraft burner and reducing the cost of the updraft burner.

[0040] In some embodiments, the side wall of the outer air distribution disc is provided with a plurality of fire holes, and the outer air distribution disc is provided with a ring plate for covering the first mixing chamber, and the ring plate and the side wall form the outer fire cover;

[0041] And / or, the side wall of the inner air distribution disc is provided with a plurality of fire holes, and the inner air distribution disc is provided with a cover plate for covering the second mixing chamber, and the cover plate and the side wall form the inner fire cover.

[0042] By providing the fire holes on the side wall of the outer air distribution disc and / or the inner air distribution disc, which are connected to the mixing chambers and the outside, the side wall of the air distribution disc can become part of the fire cover, and by mounting the ring plate / cover plate on the air distribution disc, the ring plate / cover plate covers the first / second mixing chamber, and the ring plate / cover plate and the side wall with fire holes serve as the function of the fire cover, thereby eliminating the fire cover component in the related art, and making the device structure simpler.

[0043] Another technical scheme adopted by the application is to provide a gas stove, which comprises the upper air inlet burner.

[0044] From the above technical scheme, it can be seen that the gas stove provided by the application is provided with the upper air inlet burner with the ejector, and since the primary air and the secondary air both enter from the ejector, the gas stove adopts the upper air inlet mode, and based on the structural design of the ejector, the gas stove provided by the application has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0046] Figure 1 A top view of the ejector in the embodiment of the application is shown.

[0047] Figure 2 A front view of the ejector in the embodiment of the application is shown.

[0048] Figure 3 A bottom view of the ejector in the embodiment of the application is shown.

[0049] Figure 4 A perspective view of the ejector in the embodiment of the application after the cover plate is removed is shown.

[0050] Figure 5 A structural schematic view of the upper air inlet burner in the embodiment of the application under a certain viewing angle is shown.

[0051] Figure 6 A structural schematic view of the upper air inlet burner in the embodiment of the application under another viewing angle is shown.

[0052] Figure 7 A structural schematic view of the gas stove in the embodiment of the application is shown.

[0053] Explanation of reference signs: 100-ejector; 10-outer air distribution disc, 11-first mixing chamber, 111-communication port, 112-air outlet, 12-ejecting pipe, 121-flat pipe section, 122-pipe shell section, 13-cover plate, 131-baffle, 14-side wall, 141-burning hole of outer air distribution disc, 15-guide groove, 16-through hole; 20-inner air distribution disc, 21-second mixing chamber, 22-air baffle, 221-air guide hole, 23-inner ring wall, 24-outer ring wall, 241-burning hole of inner air distribution disc, 242-through hole; 30-annular gap; 40-distribution plate; 50-air channel; 60-positioning groove; 70-primary air inlet channel; 80-secondary air inlet channel.

[0054] 1100-upper air inlet burner; 100-ejector; 200-nozzle support, 201-nozzle, 202-positioning block; 300-inner fire cover, 310-upper sealing plate; 400-outer fire cover, 410-ring plate; 500-lower sealing plate.

[0055] 1000-gas stove; 1100-upper air inlet burner; 1200-cooker support; 1300-panel. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0057] In addition, reference numbers and / or reference letters can be repeated in different examples in the present application, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0058] In the related art, in the horizontally arranged upper air inlet burner of the gas stove, the mixing chambers of the inner ring, the middle ring and the outer ring are respectively communicated with the corresponding ejecting pipes, which results in a large number of ejecting pipes and a large overall volume. The ejector, the upper air inlet burner and the gas stove provided in the embodiments of the present application share the ejecting pipes by the inner ring and the outer ring, which can at least solve the technical problems of a large number of ejecting pipes and a large overall volume existing in the prior art to some extent.

[0059] The present application will be described below in conjunction with the drawings and with reference to specific embodiments:

[0060] Embodiment 1:

[0061] The embodiment of the present application provides a kind of ejector 100, as shown in Figures 1 to 3 Whole structure diagram of ejector 100 under each visual angle is shown in Figure 1. Figures 5 to 7 Ejector 100 is the key component in the upper air inlet burner 1100 of gas stove 1000, and it plays the role of ejecting gas and providing primary air and secondary air, and the structure form of ejector 100 directly affects the thermal efficiency of gas stove 1000.

[0062] The ejector 100 in the embodiment is a double-ring structure, including an outer ring ejector and an inner ring ejector installed in a nested manner.The outer ring ejector is annular as a whole, and the center of the outer ring ejector is a cavity structure, and the inner ring ejector is located in the cavity.Of course, in other embodiments, the ejector 100 can also be designed as a three-ring or more ring structure.In some embodiments, the ejector 100 can also be provided as a three-dimensional structure, i.e., the inner ring and the outer ring have a height difference.The overall architecture of the ejector 100 is not limited in the present application, as long as it has an inner ring and an outer ring.

[0063] Referring to Figure 2, Figures 1 to 3 The outer ring ejector includes an outer gas distribution disc 10 and an ejector pipe 12, and the outer gas distribution disc 10 is provided with an annular first gas mixing chamber 11.The ejector pipe 12 is connected to the outer gas distribution disc 10, and the ejector pipe 12 is communicated with the first gas mixing chamber 11.The inner ring ejector includes an inner gas distribution disc 20, and the inner gas distribution disc 20 is provided with a second gas mixing chamber 21.The inner ring ejector is not provided with an ejector pipe, and the required gas of the inner gas distribution disc 20 is provided by the outer gas distribution disc 10.Specifically, the ejector 100 is provided with a gas channel 50, and the gas channel 50 communicates the first gas mixing chamber 11 and the second gas mixing chamber 21, so that the inner gas distribution disc 20 is communicated with the outer gas distribution disc 10, and the ejector pipe 12 simultaneously provides the required gas for the inner and outer rings.

[0064] Considering the combustion efficiency, the number of ejector pipes 12 is at least two, and the outer gas distribution disc 10 and the ejector pipe 12 can be provided as an integral molding, or can be provided as a split structure, and the specific structure type is not limited in the present application.A plurality of communication openings 111 are circumferentially arranged on the cavity bottom of the outer gas distribution disc 10, as shown in Figure 3. Figure 4 The communication openings 111 are specifically located at the groove bottom of the first gas mixing chamber 11, and are used to communicate the first gas mixing chamber 11 and the ejector pipe 12.Each ejector pipe 12 is circumferentially arranged, and there is a certain interval between adjacent two ejector pipes 12.Due to the ring structure of the outer gas distribution disc 10, the ejector pipe 12 also has a certain circumferential angle, rather than a straight line, so that each ejector pipe 12 has a rotational direction (from the gas inlet end to the gas outlet end).Each ejector pipe 12 can be arranged clockwise or counterclockwise, so that the gas-air mixture flowing into the outer gas distribution disc 10 from the ejector pipe 12 rotates in the same rotational direction, so that the gas-air mixture can be quickly and uniformly distributed at each position of the first gas mixing chamber 11, thereby improving the combustion efficiency.

[0065] The injection pipe 12 is used to provide an injection channel, which can be a space in a pipe or a space enclosed by a pipe shell, and the specific implementation manner is not limited in the present application. Please refer to Figure 3 In some embodiments, the injection pipe 12 includes a flat pipe section 121 and a pipe shell section 122. The flat pipe section 121 is a complete pipe, for example, a circular straight pipe. The pipe shell section 122 is a sheet-shaped pipe shell, which can be integrally formed with the outer gas distribution disc 10, and the pipe shell section 122 is wrapped on the communication port 111 so that the annular cavity is in communication with the injection pipe 12. A cover plate 13 is arranged on the communication port 111, and the area of the cover plate 13 is smaller than the size of the opening 40 of the communication port 111, so that the cover plate 13 is partially wrapped on the communication port 111. The area of the communication port 111 that is not covered by the cover plate 13 forms an air outlet 112, which is used to communicate the first gas mixing cavity 11 and the injection pipe 12. Thus, the injection channel includes two sections: an air inlet section and an air outlet section. The air inlet section is the internal space of the flat pipe section 121, and the air outlet section is the channel enclosed by the pipe shell section 122 and the cover plate 13. Compared with the independent injection pipe in the related art, the structure of the air outlet section makes the injection pipe 12 closer to the outer gas distribution disc 10, so as to better adapt to the limited space on the faceplate 1300 of the gas stove 1000 and facilitate increasing the length of the injection pipe 12 in the limited space.

[0066] The air outlet section enclosed by the pipe shell section 122 and the cover plate 13 is close to the air outlet end of the injection channel, and the air inlet section in the internal space of the flat pipe section 121 is close to the air inlet end of the injection channel. In some embodiments, the cross-sectional area of the air outlet section is greater than that of the air inlet section. That is, along the air inlet direction, the injection channel first decreases and then increases, so as to increase the primary air coefficient by utilizing the Venturi effect.

[0067] For the outer gas distribution disc 10, since the cover plate 13 is partially wrapped on the communication port 111, the cover plate 13 forms part of the cavity bottom of the first gas mixing cavity 11. In order to reduce the flow resistance of the gas-air mixture flow, in some embodiments, the upper surface of the cover plate 13 is a flat surface that is flush with the cavity bottom of the first gas mixing cavity 11. For example, the cover plate 13 is a flat plate, and after the cover plate 13 is wrapped on the communication port 111, the upper surface thereof is flush with the cavity bottom of the first gas mixing cavity 11. Alternatively, the cover plate 13 is a component with a space shape, and the upper surface of the component is a flat surface. The specific structure of the cover plate 13 is not limited in the present application. By arranging the cover plate 13 to be flush with the cavity bottom of the first gas mixing cavity 11 of the outer gas distribution disc 10, the flow resistance of the first gas mixing cavity 11 of the outer gas distribution disc 10 is reduced, so that the gas-air mixture flow can be quickly and uniformly distributed at each position of the first gas mixing cavity 11.

[0068] Please refer to Figure 1In some embodiments, the cover plate 13 is provided with baffles 131 protruding from the cover plate 13, and the corresponding baffles 131 protrude from the bottom plane of the first mixing cavity 11. The baffles 131 are close to one end of the outer ring gas outlet 112. When the gas-air mixture flowing out of the outer ring gas outlet 112 encounters the baffles 131, the gas flow collides with the baffles 131, which is conducive to the outward diffusion of the gas flow, and can promote the mixing of gas and air and make the gas flow more evenly distributed in the first mixing cavity 11.

[0069] The inner gas distribution disc 20 can have a similar ring structure as the outer gas distribution disc 10, with a cavity in the center. Alternatively, the inner gas distribution disc 20 can have a circular groove structure or other groove structures. The specific structure of the inner gas distribution disc 20 is not limited in the present application, and can be referred to the relevant disclosures in the prior art.

[0070] Referring to Figures 1 to 3 In some embodiments, the inner gas distribution disc 20 has a ring structure, which specifically includes an outer ring wall 24, an inner ring wall 23, and a baffle plate 22. The outer ring wall 24 and the inner ring wall 23 are nested to form an annular space. The baffle plate 22 is a ring plate, which is arranged in the annular space, and the outer ring edge of the baffle plate 22 is fixedly connected with the outer ring wall 24, and the inner ring edge is fixedly connected with the inner ring wall 23, so as to form a second mixing cavity 21 in the shape of a ring with the outer ring wall 24, the inner ring wall 23, and the baffle plate 22. It can be understood that when the baffle plate 22 is arranged at the middle height between the outer ring wall 24 and the inner ring wall 23, the outer ring wall 24, the inner ring wall 23, and the baffle plate 22 can form two annular cavities, and the annular cavity connected with the gas channel 50 is used as the second mixing cavity 21.

[0071] Specifically, the annular cavity at the lower part of the inner gas distribution disc 20 is connected with the gas channel 50, and constitutes the second mixing cavity 21. A plurality of gas guide holes 221 are arranged on the baffle plate 22, each of which is a hole penetrating through the baffle plate 22, and each of the gas guide holes 221 is uniformly and spacedly distributed along the circumference of the baffle plate 22, so that the gas-air mixture can enter the upper annular cavity from the second mixing cavity 21 and burn in the upper annular cavity. By arranging the baffle plate 22 with gas guide holes 221, the flow rate of the gas-air mixture entering the second mixing cavity is reduced, and the tendency of flame separation is reduced.

[0072] In some embodiments, the outer diameter of the inner gas distribution disc 20 is smaller than the inner diameter of the outer gas distribution disc 10, so that an annular gap 30 is formed between the inner gas distribution disc 20 and the outer gas distribution disc 10. When the inner gas distribution disc 20 and the outer gas distribution disc 10 are concentrically arranged, the annular gap 30 is a circular ring. Through the annular gap 30 and the cavity surrounded by the inner ring wall 23 of the inner gas distribution disc 20, the secondary air entering condition of the central fire and the outer ring fire can be improved, thereby improving the combustion efficiency.

[0073] In addition to serving as an inlet for secondary air, the annular gap 30 can also be used for installation of the gas passage 50. In some embodiments, the gas passage 50 is located in the annular gap 30 between the inner gas distribution disc 20 and the outer gas distribution disc 10. In one aspect, the gas passage 50 is located between the inner gas distribution disc 20 and the outer gas distribution disc 10, so that the volume of the entire ejector 100 is small; in another aspect, the gas passage 50 is located between the inner gas distribution disc 20 and the outer gas distribution disc 10, so that the gas passage 50 simultaneously serves as a support connecting the outer gas distribution disc 10 and the inner gas distribution disc 20, and the entire ejector 100 does not need to be provided with a support for supporting the inner gas distribution disc 20.

[0074] The gas passage 50 can be a one-piece pipe, a spliced structure, or a hole directly formed in the ejector as the gas passage 50. The specific structure of the gas passage 50 is not limited in the present application. In some embodiments, the gas passage 50 is a pipe shell with an opening facing downward, and the opening of the pipe shell is closed by a sealing plate after assembly, so that the pipe shell and the sealing plate enclose the gas passage 50. The gas passage 50 with this structure is convenient for being integrally formed with the inner gas distribution disc 20 and the outer gas distribution disc 10, and simplifies the preparation process of the ejector 100.

[0075] In some embodiments, one end of the gas passage 50 is connected to the bottom of the outer gas distribution disc 10, and the other end is connected to the side wall 14 of the inner gas distribution disc 20, a through hole 16 is provided in the bottom of the outer gas distribution disc 10, and the gas passage 50 communicates with the first mixing chamber 11 through the through hole 16. A through hole 242 is provided on the side wall 14 of the inner gas distribution disc 20, and the gas passage 50 communicates with the second mixing chamber 21 through the through hole 242. By connecting one end of the gas passage 50 to the through hole 16 provided in the bottom of the outer gas distribution disc 10 and connecting the other end to the through hole 242 provided on the side wall 14 of the inner gas distribution disc 20, the gas-air mixture flowing into the first mixing chamber 11 can enter the gas passage 50 before combustion, ensuring the supply of gas to the inner gas distribution disc 20.

[0076] In some embodiments, since the through hole 16 and the gas outlet 112 are both located in the cavity bottom of the outer gas distribution disc 10, the position of the through hole 16 is close to the gas outlet 112, so that the gas-air mixture flowing into the first mixing chamber 11 can immediately enter the gas passage 50, ensuring the supply of gas to the inner gas distribution disc 20. The cavity bottom of the outer gas distribution disc 10 is also provided with a guide groove 15 located between the through hole 16 and the gas outlet 112 for connecting the through hole 16 and the gas outlet 112. By providing the guide groove 15 connecting the through hole 16 and the gas outlet 112, the gas-air mixture can enter the gas passage 50 before combustion, ensuring the supply of gas to the inner gas distribution disc 20.

[0077] In some embodiments, the ejector 100 is further provided with a plurality of splitter plates 40, the number of which is the same as that of the ejector pipes 12. Each splitter plate is arranged on the outer air distribution disc 10 and is close to the air inlet of each ejector pipe 12. By arranging the splitter plates, the air inlet channels of the primary air and the secondary air are separated, and the primary air coefficient is improved. The splitter plates 40 can be fixed by external structural members or directly mounted on the ejector 100.

[0078] The shape of the splitter plate 40 can be designed according to the specific orientation and number of the ejector pipes 12, which is not limited in the present application. The splitter plate 40 can be an arc-shaped plate, a bent plate or any other shaped plate, so that the splitter plate 40 itself or the splitter plate 40 and the surrounding structure together define a primary air inlet channel 70, the opening of which faces the circumference of the outer air distribution disc 10. By arranging the splitter plate 40, the primary air and the secondary air are separated. The primary air enters the ejector pipe 12 from the primary air inlet channel 70 and mixes with the gas. The area outside the primary air inlet channel 70 forms a secondary air inlet channel 80. The secondary air enters the annular gap 30 and the central cavity of the inner air distribution disc 20 through the secondary air inlet channel 80.

[0079] In some embodiments, considering that the inner air distribution disc 20 and the outer air distribution disc 10 are both annular grooves and both have side walls (including the outer ring wall 24 and the inner ring wall 23), by arranging uniformly distributed fire holes 141 / 241 on the side walls, the fire holes 141 / 241 penetrate the side walls, so that the inner air distribution disc 20 and the outer air distribution disc 10 can serve as part of the fire cover, thereby eliminating the need for a separate fire cover component and simplifying the structure.

[0080] Embodiment 2:

[0081] Based on the same inventive concept, the present embodiment provides an updraft burner 1100, which is a necessary component of the gas stove 1000 and mainly includes an ejector, a nozzle support and a fire cover. The nozzle support is mainly used to connect the gas pipeline and inject gas into the ejector through the nozzle, and the fire cover is provided with a plurality of fire holes for gas combustion. The specific number of the fire cover is determined according to the number of rings of the updraft burner. Generally, the updraft burner with a double-ring structure is provided with an inner fire cover and an outer fire cover, and the updraft burner with a triple-ring structure is provided with an inner ring fire cover, a middle ring fire cover and an outer ring fire cover. The number of nozzles on the nozzle support is determined according to the number of air inlets of the ejector pipes. Generally, one nozzle is arranged for each air inlet.

[0082] Referring to Figure 5 and Figure 6Figure 1 is a perspective view of the upper air inlet burner 1100 according to the embodiment of the present application. The upper air inlet burner 1100 according to the embodiment of the present application comprises an ejector, a nozzle support 200, an inner fire cover 300 and an outer fire cover 400, wherein the ejector is the ejector 100 according to the embodiment 1, and the specific structure is referred to the embodiment 1, which will not be described herein.

[0083] The ejector 100 according to the embodiment 1 is provided with at least two ejector pipes 12, and the nozzle support 200 is provided with two or more nozzles 201 corresponding to the ejector pipes 12. The position of each nozzle 201 is determined according to the position of the ejector pipe 12, and each nozzle 201 is in one-to-one correspondence with each ejector pipe 12 to spray the gas-air mixture into the ejector 100. In order to facilitate the alignment of the ejector pipe and the nozzle 201, the ejector 100 is provided with a positioning groove 60, and the nozzle support 200 is provided with a positioning block 202 at the corresponding position. When the positioning block 202 is inserted into the positioning groove 60, each nozzle 201 is in communication with the corresponding ejector pipe 12, which facilitates installation. In addition, the positioning groove 60 and the positioning block 202 can prevent the relative rotation between the ejector 100 and the nozzle support 200, thereby preventing gas leakage.

[0084] The inner fire cover 300 and the outer fire cover 400 are respectively arranged on the inner gas distribution disc 20 and the outer gas distribution disc 10 of the ejector 100. The inner fire cover 300 and / or the outer fire cover 400 can be an independently arranged fire cover, or a fire hole can be arranged on the inner gas distribution disc 20 and the outer gas distribution disc 10 to form a fire cover. For example, in some embodiments, the inner fire cover 300 and / or the outer fire cover 400 can be formed by arranging the fire holes 141 / 241 on the side wall 14 of the inner gas distribution disc 20 and / or the outer gas distribution disc 10. The fire holes 141 / 241 penetrate the side wall, and the inner gas distribution disc 20 and the outer gas distribution disc 10 can act as a fire cover. The other structures of the upper air inlet burner 1100 not described in detail can refer to the related disclosures of the prior art, and the specific content will not be described herein.

[0085] Embodiment 3

[0086] Based on the same inventive concept, the embodiment of the present application provides a gas stove 1000. The gas stove 1000 according to the embodiment of the present application mainly comprises a panel 1300, a burner, a cookware support 1200 for placing a cookware, and other necessary accessories such as a thermocouple and an ignition needle.

[0087] Referring to Figure 7Different from the prior art, the gas stove 1000 in the embodiment is specifically an updraft gas stove, and the burner specifically adopts the updraft burner 1100 of Embodiment 2, and the specific structure is referred to Embodiment 2, which will not be described here. Since the panel 1300, the support 1200, the ignition needle and other accessories of the gas stove 1000 are not improved in the embodiment, the specific structures can be referred to the prior art, and other structures of the gas stove 1000 not described in detail can also be referred to the related disclosure of the prior art, and the specific content will not be described here.

[0088] The gas stove 1000 is provided with the updraft burner 1100 with the ejector 100, and since the primary air and the secondary air both enter from the ejector 100, the gas stove 1000 adopts an updraft mode. The ejector of the gas stove 1000 cancels the inner ring of the ejector pipe, and accordingly does not need to be provided with the nozzle for providing gas to the inner ring, further simplifying the internal structure of the updraft burner and reducing the cost of the updraft burner. Based on the structural design of the ejector pipe in the ejector, the length of the ejector pipe is increased in the limited space, so that the ejector pipe has a relatively long length, thereby increasing the ejecting capacity of the inner and outer rings, so that the gas and air can be fully premixed in the ejector pipe, the primary air coefficient is improved, thereby improving the combustion efficiency and increasing the heat load.

[0089] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0090] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0091] It should be noted that all directional indications, e.g., "upper", "lower", "front", "back", "side", "end", "upper", "lower", "up", "down", "clockwise", "counter clockwise", "horizontal", "vertical", "top", "bottom", "above", "below", "under", "side", "out", "in", etc., are used for convenience and are in no way limiting as to the position of the components being described.

[0092] In the present application, unless specifically defined otherwise, the terms "connect", "fixed", and the like should be understood broadly, for example, "fixed" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0093] In addition, the description in the present application such as "first", "second", etc. is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly defined.

[0094] In the description of the present application, the description of 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 the present application, the illustrative description of the above terms is not necessarily for 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 the present application.

[0095] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0096] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, 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 outer gas distribution plate having a first gas mixing chamber; An inner gas distribution plate is located inside the outer gas distribution plate, and the inner gas distribution plate has a second gas mixing chamber; the inner gas distribution plate includes: an outer ring wall connected to the airway; an inner ring wall located inside the outer ring wall; an air baffle fixedly installed between the outer ring wall and the inner ring wall, the outer ring wall, the inner ring wall and the air baffle together forming two upper and lower annular chambers; the lower annular chamber is connected to the airway to form the second gas mixing chamber; an air duct, provided between the outer air distribution plate and the inner air distribution plate, for connecting the first air mixing chamber with the second air mixing chamber; An ejector tube is connected to the first gas mixing chamber, and the ejector tube has a circumferential angle; there are more than two ejector tubes; In which, the outer gas distribution disk is circumferentially provided with two or more connecting ports for correspondingly connecting each of the ejection pipes; a cover plate is provided on the connecting port, and the cover plate partially covers the connecting port so that the uncovered connecting port constitutes the air outlet of the ejection channel; a through hole is provided at the bottom of the outer gas distribution disk, and the through hole is close to the air outlet, and the air duct is connected with the first mixing chamber through the through hole; a guide groove is also provided at the bottom of the cavity of the outer gas distribution disk, and the guide groove is located between the through hole and the air outlet, and is used to connect the through hole and the air outlet, so that the gas-air mixed flow enters the air duct when it is not burned; one end of the air duct is connected to the bottom of the outer gas distribution disk, and the other end is connected to the outer ring wall; a number of through air guide holes are provided on the air baffle plate, and the gas-air mixed flow enters the upper annular cavity from the second mixing chamber and burns in the upper annular cavity.

2. The ejector according to claim 1, wherein The other end of the air channel is communicated with a through hole on the outer ring wall of the inner air distribution disk.

3. The ejector according to claim 2, wherein: There are more than two through holes, and the two or more through holes are spaced apart along the circumferential direction; The number of the air passages is the same as the number of the through holes, and the plurality of air passages are arranged at intervals between the outer air distribution plate and the inner air distribution plate.

4. The ejector according to claim 3, wherein: The two or more ejector tubes are arranged at intervals in the same rotational direction along the circumferential direction; the through holes and the ejector tubes are alternately distributed along the circumferential direction.

5. The ejector according to claim 4, wherein: The ejector pipe includes a tube shell section and a flat tube section. The tube shell section is connected to the air outlet of the external gas distribution plate. The tube shell section and the cover plate together form the air outlet section of the ejector channel. The interior of the flat tube section constitutes the air inlet section of the ejector channel. The cross-sectional area of ​​the air outlet section of the ejector channel is larger than the cross-sectional area of ​​the air inlet section.

6. The ejector according to claim 5, wherein: The upper surface of the cover plate is flat, and the cover plate is flush with the bottom of the first gas mixing cavity of the outer gas distribution plate; a baffle protruding from the cover plate is provided on one end of the cover plate close to the gas outlet.

7. The ejector according to any one of claims 1 to 6, characterized in that: The outer gas distribution plate is provided with a diverter plate, and the diverter plate is close to the air inlet of the ejector tube.

8. The ejector according to any one of claims 1 to 6, characterized in that: A plurality of fire holes are provided on the side walls of the outer gas distribution plate and / or the inner gas distribution plate.

9. An upward air inlet burner, characterized in that: include: The ejector according to any one of claims 1 to 8; A nozzle bracket, wherein the nozzle bracket is provided with a nozzle for communicating with the ejector tube; An inner fire cover is provided on the inner gas distribution plate; The outer fire cover is arranged on the outer gas distribution plate.

10. The upward air inlet burner according to claim 9, characterized in that: A plurality of fire holes are provided on the side wall of the outer gas distribution plate. A ring plate for covering the first gas mixing cavity is installed on the outer gas distribution plate. The ring plate and the side wall of the outer gas distribution plate constitute the outer fire cover. And / or, a plurality of fire holes are provided on the side wall of the inner gas distribution plate, an upper sealing plate for covering the second gas mixing cavity is installed on the inner gas distribution plate, and the upper sealing plate and the side wall of the inner gas distribution plate constitute the inner fire cover.

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

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