CN216693542U - Ejector, upper air inlet burner and gas stove - Google Patents

Abstract

The application discloses ejector, last air inlet burner and gas-cooker solve the little technical problem of last air inlet gas-cooker heat load that prior art exists. The utility model provides an ejector includes the dish of mixing the gas and draws the ejector pipe that is linked together with the mixed gas chamber of mixing the gas dish, the inside of drawing the ejector pipe is provided with at least one interior baffle, make draw the at least partial lumen of penetrating the pipe to separate for two above passageway branches, consequently, in the ejector that this application provided, the ejector pipe that is provided with the interior baffle has two above and draws the passageway, consequently can dock a plurality of nozzles simultaneously, through the area of contact of increase high-speed fluid and air, the entrainment primary air more easily, thereby promote the ejector capacity of this ejector. And each channel branch is separated by an inner partition plate and is mutually independent, so that the air flow interference caused by multi-nozzle injection can be prevented, and the primary air coefficient is improved. And the total volume of the injection pipe is small, so that the injection pipe is more suitable for the limited space structure of the upper air inlet burner.

Description

Ejector, upper air inlet burner and gas stove

Technical Field

The application belongs to the technical field of kitchen utensils, concretely relates to ejector, last air inlet burner and gas-cooker.

Background

The household gas stove burner has a lower air inlet type (primary air is supplemented below a panel) and an upper air inlet type (primary air is supplemented above the panel) according to the air inlet mode of primary air. The upper air inlet burner has the advantages that primary air and secondary air of the upper air inlet burner are all from the upper face plate, the bottom shell can be fully sealed, the upper air inlet burner is safer compared with a traditional lower air inlet burner, and the problem that a nozzle is blocked by foreign matters can be solved.

However, the upper air inlet burner is limited by the limitation of a space structure, and the injection capacity of the injection pipe is not ideal, so that a series of combustion working condition problems are caused, such as standard exceeding of smoke, yellow flame and the like. The heat load of the upper air inlet burner is generally small, and the requirement of large load cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the existing gas stove cannot meet the heavy load requirement, the application provides an ejector, an upper air inlet burner and the gas stove.

The technical scheme adopted by the application is as follows: providing an eductor comprising:

the air mixing disc is provided with an air mixing cavity;

the injection pipe is communicated with the gas mixing cavity;

and the at least one inner partition plate is arranged in the ejector pipe along the air inlet direction so as to divide at least part of the pipe cavity of the ejector pipe into more than two channel branches.

According to the technical scheme, the ejector that this application provided draws including mixing the gas dish and drawing the pipe with what mix the gas chamber of mixing the gas dish and be linked together, inside drawing the pipe is provided with at least one interior baffle, the interior baffle sets up along the direction of admitting air, through setting up this interior baffle, make draw at least partial lumen of pipe to separate for two above passageway branches, consequently, in the ejector that this application provided, the pipe that draws that is provided with the interior baffle has two above drawing the passageway, consequently, can dock a plurality of nozzles simultaneously, through the area of contact of increase high-speed fluid and air, the entrainment primary air more easily, thereby promote the ejector's of this ejector. And each channel branch is separated by an inner partition plate and is mutually independent, so that the air flow interference caused by multi-nozzle injection can be prevented, and the primary air coefficient is improved.

The application provides an ejector through setting up the interior baffle at drawing the ejector pipe inside, obtains two above passageway branches, draws and penetrates a tub total volume and little, more is fit for being applied to the finite space structure of last air inlet burner. Compare in the correlation technique in order to promote the ejector performance of combustor, adopt the structure of drawing of penetrating many pipes that draws, lead to ejector structure complicacy, and have the potential safety hazard of gas leakage, the ejector simple structure, small that this application provided, specific better popularization and application are worth.

In some embodiments, the ejector tube has a throat section with a smaller cross-sectional area than the inlet end, and the internal baffle is disposed in the throat section.

Through set up the throat section in drawing penetrating the pipe, because the cross sectional area of throat section is less than the cross sectional area who draws the inlet end that penetrates the pipe at place, consequently should draw and penetrate the pipe and can utilize venturi effect, improve the air coefficient once. Because the cross sectional area of throat pipeline section is little, the velocity of flow of air current in throat pipeline section is greater than the inlet end, and the air current collides easily, superposes, mutual interference, through setting up the interior baffle in throat pipeline section, can separate the air current for gas air mixed air current independently flows in confined space, prevents that double nozzle or multinozzle from drawing the air current that arouses and disturb, improves primary air coefficient.

In some embodiments, one of the ends of the inner baffle is flush with the inlet end of the throat section; the length of the inner baffle is not greater than the length of the throat section.

Because gas and primary air all get into by the inlet end of drawing the ejector pipe, through setting up wherein one end of inner baffle and the inlet end of larynx pipeline section flush, guarantee that the inlet end of larynx pipeline section is separated for a plurality of passageways, prevent that double jet or multiinjector from drawing the air current that arouses and disturb, are favorable to gas and primary air to get into.

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

The throat pipe section is a straight pipe section with a waist-shaped cross section, the waist-shaped structure is provided with a long straight edge, the throat pipe section is conveniently connected with the air mixing disc, and the arc-shaped section of the waist-shaped structure is favorable for reducing the flow resistance of airflow; the inner partition plate is positioned on the central symmetry plane of the straight pipe section, so that the cross sectional areas of all the channel branches are equal, and primary air is uniformly distributed.

In some embodiments, the gas mixing discs comprise an outer ring gas mixing disc and an inner ring gas mixing disc;

the two injection pipes are respectively an inner ring injection pipe and an outer ring injection pipe, the inner ring injection pipe is communicated with the gas mixing cavity of the inner ring gas mixing disc, and the outer ring injection pipe is communicated with the gas mixing cavity of the outer ring gas mixing disc;

the inner partition plate is arranged in the outer ring injection pipe.

The ejector is arranged to be of a multi-ring structure, so that the combustion area is increased. Because the outer ring has large injection capacity, the inner partition plate is arranged in the outer ring injection pipe, so that the outer ring injection pipe is internally provided with a plurality of channel branches, a plurality of nozzles can be butted, and the injection capacity of the outer ring is improved.

In some embodiments, the inner and outer annular gas mixing discs have an annular gap therebetween; the inner ring air mixing disc is a ring structure with a central cavity, and the central cavity of the inner ring ejector is communicated with the annular gap.

Through mixing the gas dish with the inner ring and setting up to cyclic annular for the center of inner ring mixes the gas dish is the cavity with external intercommunication, and the central cavity and the annular space intercommunication of inner ring gas dish, can improve the secondary air admission condition of center fire and outer ring fire, thereby improve combustion efficiency.

In some embodiments, 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 ejector further comprises an outer partition plate, and the outer partition plate separates the air inlet area of the inner ring ejector pipe and the air inlet area of the outer ring ejector pipe.

The air inlet ends of the inner and the annular injection pipes are arranged on the same side, so that a nozzle and a corresponding gas pipeline are convenient to arrange; through setting up outer baffle, outer baffle draws the regional air inlet that draws the pipe with the outer loop and draws the regional separation that draws of admitting air of pipe for the inner loop draws the primary air inlet channel who draws the pipe and draws the primary air inlet channel who draws the pipe with the outer loop and separate, prevents that the inner and outer loop from drawing the in-process mutual interference that the pipe draws primary air, causing the coefficient of primary air to descend, and then improves the drawing performance of combustor.

In some embodiments, 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 flow dividing baffle, and the flow dividing baffle separates a primary air inlet area and a secondary air inlet area.

Through setting up the reposition of redundant personnel baffle, can separate the primary air intake region and the secondary air intake region of ejector, avoid first, secondary air to rush gas, and then improve the injection performance of combustor.

In some embodiments, the air inlet of the inner ring ejector pipe and the air inlet of the outer ring ejector pipe are both provided with convex edges; the chimb connect in the outer loop mixes the gas dish, just the total length of chimb is greater than the outer loop radius of outer loop gas dish is mixed, the chimb constitutes the reposition of redundant personnel baffle.

Through setting up the chimb in drawing penetrating pipe air inlet department, and the chimb mixes the gas dish with the outer loop and is connected, the chimb is located between gas nozzle and the annular space, and because the length of chimb is longer, surpasss the outer ring radius that the gas dish was mixed to the outer loop, can effectively separate the annular space that the primary air that is close to gas nozzle admits air regional and is used for the secondary air to admit air.

Another technical scheme adopted by the application is as follows: there is provided an upper intake burner comprising:

the ejector;

the base support is provided with more than two nozzles, the air inlet end of the injection pipe provided with the inner partition plate is provided with more than two nozzles, and the more than two nozzles correspond to the more than two channel branches one by one;

and the fire cover is arranged on the gas mixing disc of the ejector.

The air inlet end of the injection pipe with the inner partition plate is provided with the plurality of nozzles, so that multi-nozzle injection is realized, the contact area of high-speed fluid and air can be increased, primary air is more easily sucked, and the injection capacity of the upper air inlet burner is improved.

In some embodiments, the fire lid comprises an outer ring fire lid and an inner ring fire lid, both of which are ring-shaped.

Through all setting up inner and outer ring fire lid into the annular, the secondary air of being convenient for gets into, can improve the secondary air admission condition of center fire and outer ring fire to improve combustion efficiency.

The application adopts another technical scheme that: a gas stove is provided, which comprises the upper air inlet burner.

The application provides a be provided with the last air inlet burner who takes above-mentioned ejector in the gas-cooker because primary air and secondary air all get into from the ejector, and this ejector is located gas-cooker panel top, and what consequently this gas-cooker adopted is last air inlet mode, and based on the structural design of ejector pipe in the ejector, under the prerequisite that does not influence the ejector capacity of ejector, the volume of ejector pipe is littleer, more is fit for being applied to last air inlet burner's finite space structure. The injection pipe adopts a multi-nozzle injection structure. Through the area of contact of increase high-speed fluid and air, the entrainment primary air more easily to promote the injection ability of last air inlet burner, improve the thermal efficiency of gas-cooker.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a top view of an eductor in an embodiment of the present application.

Fig. 2 shows a cross-sectional view a-a of the eductor of fig. 1.

Fig. 3 shows a schematic structural diagram of the ejector in fig. 1 at a certain viewing angle.

Fig. 4 shows a schematic view of the ejector of fig. 1 from another angle of view.

Fig. 5 shows a schematic structural diagram of an upper air inlet burner in an embodiment of the present application.

Fig. 6 shows a schematic view of the structure of the base bracket in the upper inlet air burner of fig. 5.

Fig. 7 shows an exploded view of the upper intake burner of fig. 5.

Fig. 8 shows a schematic structural view of a gas range in the embodiment of the present application.

Description of reference numerals: 100-an ejector; 10-outer ring air mixing disc, 11-air mixing cavity of outer ring air mixing disc; 20-inner ring air mixing disc, 21-air mixing cavity of the inner ring air mixing disc, 22-central cavity; 30-outer ring ejector pipe, 31-throat pipe section, 32-air inlet section, 33-transition section and 34-channel branch; 40-inner ring ejector pipe; 50-inner partition board; 60-an outer baffle; 70-split baffle, 71-convex edge; 80-an annular gap; 90-positioning grooves; a-the gas inlet end.

1100-upper air intake burner; 100-an ejector; 200-base support, 201-nozzle, 202-positioning block; 300-inner ring fire cover; 400-outer ring fire lid.

1000-gas range; 1100-upper air intake burner; 1200-a cookware support; 1300-panel.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the related technology, in the horizontally arranged upper air inlet burner of the gas stove, the injection pipe is arranged on the base or only one injection pipe is arranged on the inner ring and the outer ring, so that the heat load of the burner is small, the efficiency is low, and the requirement of large load cannot be met. The related art has the root of the defects that: because of limited space on a panel of the upper air inlet combustor, the injection pipe structure of the upper air inlet combustor is difficult to lengthen, so that the premixing of gas and air is incomplete, the combustion efficiency is low, and the load is difficult to improve.

The embodiment of the application provides an ejector, last air inlet combustor and gas-cooker, adopts last air inlet scheme, under the circumstances of guaranteeing the security, can solve the little technical problem of last air inlet gas-cooker heat load that prior art exists at least to a certain extent.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

example 1:

the embodiment of the application provides an ejector 100, as shown in fig. 1 to 4, which is an overall structure diagram and a cross-sectional view of the ejector 100 at various viewing angles. Referring to fig. 7, the injector 100 is a key component in the upper air inlet burner 1100 of the gas range 1000, and plays a role in injecting gas and providing primary air and secondary air, and the structural form of the injector 100 directly affects the thermal efficiency of the gas range 1000. The ejector 100 comprises a gas mixing disc and an ejector pipe located below the gas mixing disc, a gas mixing cavity for gas and air to flow is arranged on the gas mixing disc, and the gas mixing cavity can be circular or annular. The injection pipe is provided with an air inlet end a for inputting gas and air and an air outlet end for outputting gas-air mixed airflow.

Referring to fig. 2, the ejector 100 includes at least one internal partition 50, the internal partition 50 is disposed in at least one ejector pipe of the ejector 100, and the internal partition 50 is disposed in the ejector pipe along the air inlet direction, that is, the internal partition 50 is parallel to the axial direction of the ejector pipe, so that at least a part of the pipe cavity of the ejector pipe is divided into more than two passage branches 34. When a plurality of internal baffles 50 are disposed in the ejector pipe, the internal baffles 50 may be disposed in parallel or in a cross manner, for example, a cross manner.

The injection pipe provided with the inner partition plate 50 is provided with more than two injection channels, so that the plurality of nozzles 201 can be simultaneously butted, primary air is more easily sucked by increasing the contact area of high-speed fluid and air, and the injection capacity of the injector 100 is improved. And each channel branch 34 is separated and mutually independent by the inner baffle 50, thus preventing the air flow interference caused by the injection of the multi-nozzle 201 and improving the primary air coefficient. Compared with the injection structure with multiple injection pipes in order to improve the injection performance of the combustor in the related art, the more than two channel branches 34 are obtained by arranging the inner partition plate 50 in the injection pipe, the total volume of the injection pipes is small, and the injection pipe is more suitable for being applied to the limited space structure of the upper air inlet combustor 1100.

In order to improve the ejection capacity of the ejector pipe, the ejector pipe of the ejector 100 can be designed into a pipeline structure with a venturi effect, and the primary air coefficient is improved by utilizing the venturi effect. In some embodiments, the cross-sectional area of a portion of the ejector tube is smaller than the cross-sectional area of the inlet end a, and the tube with the smaller cross-sectional area forms the throat section 31. A venturi is a typical conduit structure having a "venturi effect". That is to say, draw in this application and penetrate the pipe and can directly adopt venturi structure, also can set up to inlet end a for the pipeline structure of taper pipe section, the remainder is the straight tube section the same with taper pipe section minor diameter end pipe diameter, and this application does not do the restriction.

Because the cross-sectional area of the throat section 31 is small, the flow velocity of the airflow in the throat section 31 is greater than that of the air inlet end a, and the airflow is easy to collide, overlap and interfere with each other. In order to overcome the above problems, referring to fig. 2, the inner partition plate 50 is disposed in the throat section 31, and the inner partition plate 50 can separate the air flow, so that the gas-air mixture air flow independently flows in a limited space, thereby preventing the air flow interference caused by the injection of the double nozzles or the multiple nozzles, and improving the primary air coefficient.

In order to prevent the air flow interference caused by the injection of the double nozzle or the multiple nozzles, in some embodiments, one end of the inner partition plate 50 close to the nozzle 201 is flush with the air inlet end a of the throat pipe section 31, so that the air inlet end a of the throat pipe section 31 is divided into multiple channels, and the gas and the primary air can enter the throat pipe. The length of the internal baffle 50 is not greater than the length of the throat section 31, for example, in some embodiments, the internal baffle 50 is as long as the throat section 31 to completely avoid the air flow interference in the throat section 31, and in other embodiments, the length of the internal baffle 50 is less than the length of the throat section 31, so that the channel branches 34 can communicate at the air outlet end of the throat section 31, the air flows collide, and the gas and air are further mixed and then enter the air mixing cavity of the air mixing tray.

The cross-sectional shape of drawing the ejector tube is circular or oval usually to reduce the flow resistance, draws the cross-sectional shape of ejector tube to adopt other shapes too, can decide according to concrete technology, and this application does not do the restriction. Referring to fig. 1 and 3, in some embodiments, the ejector tube includes an inlet section 32, a throat section 31, and a transition section 33 connected in series. In the air intake direction, the cross-sectional area of the air intake section 32 decreases, and the inlet of the air intake section 32 is the largest, facilitating the entry of gas and air. The throat section 31 is a straight pipe section, the cross section of the throat section 31 is waist-shaped, the waist-shaped structure is provided with a long straight edge, the throat section 31 is conveniently connected with the air mixing disc, and the arc section of the waist-shaped structure is favorable for reducing the flow resistance of airflow. The transition section 33 is used for connecting the throat section 31 and the gas mixing disc, and the transition section 33 is arranged as an inclined section due to the height difference between the throat section 31 and the gas mixing disc.

The internal baffle 50 is located on the central symmetry plane of the straight pipe section of the waist-shaped structure to ensure that the cross-sectional areas of the channel branches 34 are equal and the primary air is uniformly distributed.

For the ejector 100 having a plurality of ejector pipes, the inner partition 50 may be provided in one or some of the ejector pipes, or the inner partitions 50 may be provided in all of the ejector pipes. Correspondingly, the number of the nozzles 201 of the injection pipe provided with the internal partition 50 is the same as that of the channel branches 34, and the number of the nozzles 201 of the injection pipe without the internal partition 50 is not limited.

Referring to fig. 1 to 4, a double-ring ejector 100 is taken as an example, and two gas mixing discs are provided, namely an outer ring gas mixing disc 10 and an inner ring gas mixing disc 20. The outer ring air mixing disc 10 and the inner ring air mixing disc 20 are both injected by a single pipe, namely, only two injection pipes are arranged in the whole injector 100, namely an inner ring injection pipe 40 and an outer ring injection pipe 30, the inner ring injection pipe 40 is communicated with the air mixing cavity 21 of the inner ring air mixing disc 20, and the outer ring injection pipe 30 is communicated with the air mixing cavity 11 of the outer ring air mixing disc 10. Considering that the requirement of outer ring fuel gas injection is large, the inner partition plate 50 is only arranged in the outer ring injection pipe 30, and only one inner partition plate 50 is arranged in the outer ring injection pipe 30, and two channel branches 34 are formed inside. Through the structure, on the structural basis of the upper air inlet burner 1100 which is injected by the double pipes of the traditional inner ring and outer ring single nozzle 201, the outer ring injection pipe 30 adopts the injection structure of the double nozzles 201, and primary air is easily sucked by increasing the contact area of high-speed fluid and air, so that the injection capacity of the upper air inlet burner 1100 is improved.

In some embodiments, the air inlet end a of the inner ring ejector pipe 40 and the air inlet end a of the outer ring ejector pipe 30 are located on the same side and close to each other, so as to facilitate the arrangement of the nozzle 201 and the corresponding gas pipeline. With the outer ring ejector pipe 30, in some embodiments, the inner ring ejector pipe 40 also has a throat section, so that the inner ring ejector passage is reduced and then increased along the air intake direction, and the primary air coefficient is improved by utilizing the venturi effect.

The outer ring gas mixing disc 10 is ring-shaped, the inner ring gas mixing disc 20 can adopt a ring groove structure, and a cavity is arranged in the center; the inner ring air mixing disc 20 may also adopt a circular groove structure. To enhance the secondary air, in some embodiments, the inner air mixing disk 20 and the outer air mixing disk 10 are both annular, and the central cavity 22 of the inner air mixing disk 20 facilitates the entry of the inner secondary air. In certain embodiments, the outer ring diameter of the inner ring gas mixing disk 20 is smaller than the inner ring diameter of the outer ring gas mixing disk 10, such that an annular gap 80 is formed between the inner ring gas mixing disk 20 and the outer ring gas mixing disk 10, and when the inner ring gas mixing disk 20 and the outer ring gas 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 air mixing disc 20 are respectively communicated with the outside, and through the structure, the secondary air entering condition of the central fire and the outer ring fire can be improved, so that the combustion efficiency is improved.

In order to prevent the inner and outer rings from robbing air, in some embodiments, the ejector 100 further includes an outer partition plate 60, the outer partition plate 60 separates an air inlet area of the inner ring ejector tube 40 from an air inlet area of the outer ring ejector tube 30, so that a primary air inlet passage of the inner ring ejector tube 40 is separated from a primary air inlet passage of the outer ring ejector tube 30, mutual interference between the inner ring ejector tube 30 and the outer ring ejector tube 30 in the process of ejecting primary air is prevented, a primary air coefficient is prevented from being reduced, and the ejector performance of the burner is further improved.

In order to prevent the first air and the second air from rushing to the atmosphere, in some embodiments, the air inlet end a of the inner ring ejector pipe 40 and the air inlet end a of the outer ring ejector pipe 30 are both provided with a flow dividing baffle 70, and the flow dividing baffle 70 can separate a primary air inlet area (close to the nozzle 201) and a secondary air inlet area (the annular gap 80 and the inner ring central cavity 22) of the ejector 100, so as to prevent the first air and the second air from rushing to the atmosphere, and further improve the ejection performance of the burner. Any shape of baffle structure may be used for the splitter baffle 70, and the specific shape is not limited in this application.

Referring to fig. 3, in some embodiments, the air inlets of the inner ring injection pipe 40 and the outer ring injection pipe 30 are both provided with an outward convex edge 71, the convex edge 71 is connected with the outer ring air mixing disc 10, and the convex edges 71 of the inner ring injection pipe 40 and the outer ring injection pipe 30 are connected into a whole, so that the total length of the convex edge 71 is greater than the outer ring radius of the outer ring air mixing disc 10, the convex edge 71 is used as a flow dividing baffle 70, the coverage range of the flow dividing baffle 70 is large, and a primary air inlet area close to the gas nozzle 201 and an annular gap 80 for secondary air inlet can be effectively separated.

Example 2:

based on the same technical concept, the embodiment of the present application provides an upper inlet burner 1100, the upper inlet burner 1100 is an essential component of the gas range 1000, the injector 100 and the nozzle 201 of the upper inlet burner 1100 are both located above the panel 1300 of the gas range 1000, and the primary air and the secondary air are both introduced from the panel 1300, thus being "upper inlet". The upper inlet burner 1100 mainly includes an injector 100, a base bracket 200, and a fire cover. Base support 200 mainly used connects the gas pipeline to spout the gas through nozzle 201 to ejector 100, on the gas mixing dish of ejector 100 was located to the fire lid, set up a plurality of fire holes on the fire lid, supply the gas burning. The specific number of the fire caps is determined according to the number of the rings of the upper inlet burner 1100, and in general, the upper inlet burner 1100 having a double ring structure is provided with two inner and outer fire caps, and the upper inlet burner 1100 having a triple ring structure is provided with three fire caps of an inner ring, a middle ring and an outer ring. The number of nozzles 201 on the base support 200 is determined according to the number of air inlets of the injection pipe, and generally, one nozzle 201 is arranged on each air inlet.

Referring to fig. 5 and 7, the overall structure and exploded view of the upper intake burner 1100 according to the present embodiment are shown. The upper air inlet burner 1100 of the embodiment comprises an ejector 100, a base support 200 and a fire cover, wherein the ejector 100 adopts the ejector 100 of the embodiment 1, and the specific structure refers to the embodiment 1 and is not described again. Referring to fig. 6, the base bracket 200 is provided with more than two nozzles 201, the number of the nozzles 201 of the ejector pipes with the internal partition 50 is the same as that of the channel branches 34, the nozzles 201 correspond to the channel branches 34 one by one, and only one nozzle 201 is needed for the ejector pipe without the internal partition 50.

The ejector 100 based on embodiment 1 adopts a double-ring structure, and two corresponding fire covers are arranged, namely an inner ring fire cover 300 and an outer ring fire cover 400. In some embodiments, the inner ring fire cover 300 and the outer ring fire cover 400 are both ring-shaped, and the inner ring fire cover 400 and the outer ring fire cover 400 are both ring-shaped, so that secondary air can enter conveniently, the secondary air entering condition of the central fire and the outer ring fire can be improved, and the combustion efficiency is improved.

Based on in ejector 100 of embodiment 1, the interior outer loop is single and draws and penetrates the pipe, the outer loop draws and penetrates inside inner partition plate 50 that sets up of pipe 30, see fig. 6, it is provided with 3 nozzles 201 to correspond on the base support 200, the inner loop draws the inlet end an of penetrating pipe 40 and sets up a nozzle 201, the outer loop draws the inlet end a of penetrating pipe 30 and sets up two nozzles 201, and two nozzles 201 and two branch 34 one-to-one of passageway, realize the multi-nozzle injection, can increase the area of contact of high-speed fluid and air, more easily entrainment primary air, thereby promote this upper intake burner 1100's injection ability.

In order to facilitate the alignment of the ejector pipe and the nozzles 201, in some embodiments, the positioning groove 90 is disposed on the ejector 100, the positioning block 202 is disposed at a corresponding position of the base bracket 200, and when the positioning block 202 is inserted into the positioning groove 90 during installation, each nozzle 201 is opposite to the corresponding ejector pipe, so that the installation is facilitated. And the positioning groove 90 is matched with the positioning block 202, so that the ejector 100 and the base support 200 can be prevented from relatively rotating to cause gas leakage.

Example 3:

based on the same technical concept, the embodiment of the present application provides a gas stove 1000, and like the existing gas stove 1000, the gas stove 1000 of the present embodiment mainly includes a panel 1300, a burner, a cooker support 1200 for placing a cooker, and other necessary accessories such as a thermocouple and an ignition pin. In this embodiment, the gas stove 1000 is specifically an upper air intake gas stove 1000, that is, the ejector 100 is located above the panel 1300, and the primary air and the secondary air both enter from above the panel 1300.

Referring to fig. 8, unlike the prior art, the gas range 1000 of the present embodiment uses the upper intake burner 1100 of embodiment 2, and the specific structure refers to embodiment 2, which is not described herein again. Since the present embodiment does not improve the panel 1300, the bracket, the ignition pin, and other accessories of the gas stove 1000, the specific structure can refer to the existing disclosure, and other structures not described in detail in the gas stove 1000 can refer to the related disclosure in the prior art, and the specific content is not described herein.

The application provides a be provided with the last air inlet burner 1100 who takes above-mentioned ejector 100 among the gas-cooker 1000, draw the structural design of penetrating the pipe based on ejector 100 in, under the prerequisite that does not influence ejector 100's the ability of penetrating, draw the volume of penetrating the pipe littleer, more be fit for being applied to the finite space structure of last air inlet burner 1100. The injection pipe adopts an injection structure of a multi-nozzle 201. By increasing the contact area between the high-speed fluid and the air, primary air is more easily entrained, so that the injection capacity of the upper air inlet burner 1100 is improved, and the combustion efficiency of the gas stove 1000 is improved.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. An eductor, comprising:

the air mixing disc is provided with an air mixing cavity;

the injection pipe is communicated with the gas mixing cavity;

and the at least one inner partition plate is arranged in the ejector pipe along the air inlet direction so as to divide at least part of the pipe cavity of the ejector pipe into more than two channel branches.

2. The eductor as defined in claim 1 wherein: the ejector tube is provided with a throat tube section with the cross-sectional area smaller than that of the air inlet end, and the inner partition plate is arranged in the throat tube section.

3. The eductor as defined in 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 eductor as defined in claim 2 wherein: the throat section is a straight pipe section with a waist-shaped cross section; the inner partition plate is positioned on the central symmetry plane of the straight pipe section.

5. The eductor as defined in any one of claims 1-4, wherein: the gas mixing disc comprises an outer ring gas mixing disc and an inner ring gas mixing disc;

the two injection pipes are respectively an inner ring injection pipe and an outer ring injection pipe, the inner ring injection pipe is communicated with the gas mixing cavity of the inner ring gas mixing disc, and the outer ring injection pipe is communicated with the gas mixing cavity of the outer ring gas mixing disc;

the number of the inner partition plates is one, and the inner partition plates are arranged in the outer ring injection pipes.

6. The eductor as defined in claim 5 wherein: an annular gap is formed between the inner ring air mixing disc and the outer ring air mixing disc; the inner ring air mixing disc is a ring structure with a central cavity, and the central cavity of the inner ring air mixing disc is communicated with the annular gap.

7. The eductor as defined in claim 5 wherein: the air inlet end of the inner ring injection pipe and the air inlet end of the outer ring injection pipe are positioned at the same side;

the ejector further comprises an outer partition plate, and the outer partition plate separates the air inlet area of the inner ring ejector pipe and the air inlet area of the outer ring ejector pipe.

8. The eductor as defined in claim 7 wherein: the air inlet end of the inner ring injection pipe and the air inlet end of the outer ring injection pipe are both provided with a shunting baffle, and a primary air inlet area and a secondary air inlet area are separated by the shunting baffle.

9. The eductor as defined in claim 8 wherein: convex edges are arranged at the air inlet of the inner ring injection pipe and the air inlet of the outer ring injection pipe; the chimb connect in the outer loop mixes the gas dish, just the total length of chimb is greater than the outer loop radius of outer loop gas dish is mixed, the chimb constitutes the reposition of redundant personnel baffle.

10. An upper intake air burner, comprising:

the ejector of any one of claims 1-9;

the base support is provided with more than two nozzles, the air inlet end of the injection pipe provided with the inner partition plate is provided with more than two nozzles, and the more than two nozzles correspond to the more than two channel branches one by one;

and the fire cover is arranged on the gas mixing disc of the ejector.

11. The upper intake burner of claim 10, wherein: the fire lid includes outer loop fire lid and inner ring fire lid, the outer loop fire lid with the inner ring fire lid all is the annular.

12. A gas stove is characterized in that: comprising an upper intake air burner as claimed in claim 10 or 11.

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