An ejector assembly, an ejector system applying the ejector assembly and a gas stove

Abstract

The present application relates to a kind of injection assembly, the injection system and gas stove with the injection assembly of application, a kind of injection assembly, including air inlet seat, the air inlet seat has: gas flow outlet, for with gas source fluid communication to export gas flow;First air flow outlet and second air flow outlet, respectively for with air source fluid communication to export air from air source;Its characterized in that: the first air flow outlet is arranged above gas flow outlet, and the second air flow outlet is arranged below gas flow outlet.Compared with prior art, the advantages of the present application are: by making the air flow outlet of blast air be arranged in upper and lower interval relative to gas flow outlet, the first air flow outlet in upper position can press gas downward, alleviate gas floating, and the second air flow outlet in lower position ensures that air can also be supplemented below gas flow outlet, so that the air intake amount of gas flow outlet upper and lower position is uniform.

Description

Technical Field

[0001] This invention relates to the field of household kitchen appliances technology, and more particularly to an ejector assembly, as well as an ejector system and a gas stove using the ejector assembly. Background Technology

[0002] Currently, there are two main types of gas burners used in kitchen appliances. One type is the ejector gas burner, which generally includes a burner cap, an ejector tube, and a nozzle. The ejector tube has a first air inlet at one end corresponding to the nozzle. The ejector tube is connected to the outside atmosphere through the first air inlet. Gas is injected at high speed from the nozzle into the ejector tube, forming a strong ejection inside the ejector tube. Outside air is drawn into the ejector tube through the air inlet, and after mixing with the gas inside the ejector tube, it is sent to the burner cap to provide the combustion required.

[0003] The advantages of this type of burner are its simple and compact structure and good primary air injection effect. However, it also has shortcomings, such as its high requirement for gas supply pressure. Furthermore, because the gas is ejected from a nozzle with a small orifice, the jet enters the ejector tube at a very high velocity. Under the turbulent diffusion effect of the jet, some surrounding air is entrained into the ejector tube. Existing ejector tubes, such as those disclosed in Chinese patents ZL201420180488.6 (authorization announcement number CN203784951U) or ZL201520363021.X (authorization announcement number CN204717683U), have an inner cavity consisting of a contraction section, a mixing section, and a diffuser section along the inlet to outlet direction.

[0004] When the burner is operating, the air inside the burner casing is heated, resulting in a higher ambient temperature. This temperature increase is more pronounced closer to the burner. At this high temperature, the gas injected from the nozzle is rapidly heated, increasing in volume and decreasing in density. The influence of buoyancy on the gas injection direction cannot be ignored, causing the injection trajectory to tilt upwards. This increases the amount of air injected below the nozzle center plane (increasing the space for naturally drawn air), while decreasing the amount of air injected above the nozzle center plane (reducing the space for naturally drawn air). Furthermore, the naturally drawn outside air also tends to rise after being rapidly heated, further reducing the amount of air above the nozzle center plane. Therefore, the gas mixture injected from the nozzle and naturally drawn outside air entering the injection tube exhibits a situation where the gas flow rate above the nozzle center plane is less than the gas flow rate below it. This leads to uneven mixing, decreased injection efficiency, and even incomplete combustion. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an ejector assembly that addresses the shortcomings of the prior art, thereby enabling uniform mixing of the ejector gas, improving ejection efficiency, and thus ensuring complete combustion.

[0006] The second technical problem to be solved by the present invention is to provide an ejection system that uses the above-mentioned ejection components.

[0007] The third technical problem to be solved by the present invention is to provide a gas stove that uses the above-mentioned ejector system.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an ejector assembly, including an air inlet seat, wherein the air inlet seat has:

[0009] The gas outlet is used to connect with the gas source to allow the gas to flow out.

[0010] The first air outlet and the second air outlet are respectively used to supply air from the blower air source in fluid communication with the blower air source.

[0011] Its features are:

[0012] The first air outlet is arranged above the gas outlet, and the second air outlet is arranged below the gas outlet.

[0013] By arranging the air outlet of the blower at intervals above and below the gas outlet, the first air outlet located at the top can push the gas downwards, relieving the gas from rising, while the second air outlet located at the bottom ensures that air can also be supplied below the gas outlet, making the air intake above and below the gas outlet uniform.

[0014] Preferably, to further reduce the impact of gas rising, a first protrusion is formed on the side of the first air outlet away from the gas outlet, and the protruding shape of the first protrusion can further press the gas down.

[0015] Preferably, to further reduce the impact of air rising, a downward-protruding second protrusion is formed on the side of the second air outlet away from the gas outlet. The shape of the second protrusion can guide the blown air downwards and approach the wall of the second protrusion, so that the primary air blown out from the lower part is less likely to "compress" the primary air blown out from the upper part.

[0016] To reduce the impact of gas and air rising and to ensure uniform injection, the flow area of ​​the first air outlet located above the gas outlet is not less than the flow area of ​​the second air outlet located below the gas outlet.

[0017] Preferably, in order to further reduce the influence of gas and air rising and make the injection uniform, the ratio of the flow area of ​​the first air outlet located above the gas outlet to the flow area of ​​the second air outlet located below the gas outlet is 1:1 to 2.27:1.

[0018] Furthermore, the air intake seat also includes a first blower channel, which has two opposing ends, one end being a first air inlet and the other end being the aforementioned first air outlet. The flow area of ​​the first blower channel gradually decreases from the first air inlet to the first air outlet. This guides and accelerates the primary air supplied by the blower, and the reduced flow area at the air outlet further minimizes interference with the natural entrainment of external air.

[0019] Furthermore, the air intake seat also includes a second blower channel, which has two opposing ends, one end being a second air inlet and the other end being the aforementioned second air outlet. The flow area of ​​the second blower channel gradually decreases from the second air inlet to the second air outlet. This guides and accelerates the primary air supplied by the blower, and the reduced flow area at the air outlet further minimizes interference with the natural entrainment of external air.

[0020] Furthermore, to ensure smooth airflow from the air outlet and avoid turbulence caused by turning, the air intake seat also includes a gas outlet channel, a first blower channel, and a second blower channel. The gas outlet channel has two opposite ends, one of which is a gas inlet and the other is the aforementioned gas outlet. The gas inlet is used to communicate with the gas source. The first blower channel has two opposite ends, one of which is a first air inlet and the other is the aforementioned first air outlet. The second blower channel has two opposite ends, one of which is a second air inlet and the other is the aforementioned second air outlet. The gas outlet channel, the first blower channel, and the second blower channel extend in the same direction.

[0021] To ensure that the air outlet is as far away from the gas outlet as possible, minimizing the impact on the natural ejection of the gas, and to prevent the air ejected from the air outlet from directly impacting the edge of the inlet port of the ejector tube, when the ejector assembly is installed horizontally, the vertical distance between the highest point of the first air inlet of the first blower channel above the gas outlet channel and the horizontal plane where the center of the gas outlet is located is greater than the vertical distance between the highest point of the first air outlet and the horizontal plane where the center of the gas outlet is located. Similarly, the vertical distance between the lowest point of the second air inlet of the second blower channel below the gas outlet channel and the horizontal plane where the center of the gas outlet is located is greater than the vertical distance between the lowest point of the second air outlet and the horizontal plane where the center of the gas outlet is located. This ensures that the direction of the airflow from the first and second air outlets is towards the horizontal plane where the center of the gas outlet is located.

[0022] Furthermore, the first air outlet is arranged at intervals above the gas outlet, thereby preventing the first air outlet from excessively pressing down the gas, causing the gas to deviate from the center horizontal plane of the gas outlet, resulting in uneven mixing of gas and air.

[0023] Furthermore, the ejector assembly also includes an ejector tube, with the gas flow outlet and the air inlet end of the ejector tube arranged opposite each other and having a gap for natural ejection of outside air, thereby ensuring the replenishment of primary air.

[0024] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: an ejector system, characterized in that: it applies the ejector components as described above, and the ejector system further includes a blower device as a blower air source.

[0025] The technical solution adopted by the present invention to solve the third technical problem mentioned above is: a gas stove, characterized in that: it applies the ejector system described above.

[0026] Compared with the prior art, the advantages of the present invention are: by arranging the air outlet of the blower at intervals above and below the gas outlet, the first air outlet located above can press the gas downward to alleviate the upward floating of the gas, while the second air outlet located below ensures that air can also be supplied below the gas outlet, so that the air intake above and below the gas outlet is uniform. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the ejection system according to an embodiment of the present invention;

[0028] Figure 2 This is a front view of the ejector assembly according to an embodiment of the present invention;

[0029] Figure 3 This is a rear view of the ejector assembly according to an embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view (front and rear cross-section) of the ejector assembly according to an embodiment of the present invention;

[0031] Figure 5 for Figure 2 Sectional view along axis AA;

[0032] Figure 6 for Figure 2 BB-direction sectional view. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0034] In the description of this invention, it should 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," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] See Figures 1-6 This is the preferred embodiment of the invention. The gas stove in this embodiment includes a burner (not shown) and an ejector system. The ejector system includes an ejector assembly and a blower device 3 that provides a blower gas source. The ejector assembly includes an air inlet seat 1 and an ejector pipe 2.

[0036] The air intake seat 1 contains a gas outlet channel 11, a first blower channel 12, and a second blower channel 13. The gas outlet channel 11 has a gas inlet 111 and a gas outlet 112. The gas inlet 111 is in fluid communication with a gas source, and the gas outlet 112 is used to inject gas into the ejector tube 2. The first blower channel 12 has a first air inlet 121 and a first air outlet 122. The first air inlet 121 is in fluid communication with a blower device 3, which blows air into the first blower channel 12 from the first air inlet 121. The first air outlet 122 is used to inject air into the ejector tube 2. Similarly, the second blower channel 13 has a second air inlet 131 and a second air outlet 132. The second air inlet 131 is in fluid communication with the blower device 3, and the blower device 3 blows air from the second air inlet 131 into the second blower channel 13. The second air outlet 132 is used to spray air into the ejector tube 2.

[0037] The air inlet seat 1 can be a single component with the aforementioned gas outlet channel 11 and each blower channel formed therein, or it can be an assembly that houses and confines the independent gas outlet channel 11 and blower channels together. The gas outlet channel 11 and each blower channel are isolated from each other.

[0038] In this embodiment, the gas outlet passage 11, the first blower passage 12, and the second blower passage 13 extend in the same direction. The gas outlet passage 11 and each blower passage can be parallel to each other or form a certain angle. The gas inlet 111 and the gas outlet 112 are respectively formed at two opposite ends of the gas outlet passage 11, the first air inlet 121 and the first air outlet 122 are respectively formed at two opposite ends of the first blower passage 12, and the second air inlet 131 and the second air outlet 132 are respectively formed at two opposite ends of the second blower passage 13. The gas outlet 112 can be achieved by opening the gas outlet passage 11 or by setting a nozzle at the end of the gas outlet passage 11.

[0039] In addition to the primary air supply through the aforementioned blower 3, the burner also receives primary air supply through natural air intake. For this purpose, the gas flow outlet 111 and the air inlet end (not shown) of the injector 2 are positioned opposite each other, with a gap 4 between them to allow natural air to be injected through the gap 4.

[0040] When the burner is working, the heat generated at its head is transferred to the main body and surrounding components, and the air in the vicinity is gradually heated. The temperature increase is more pronounced the closer to the burner. When a high temperature is reached, the gas ejected from the gas outlet 112 is entrained by the nearby high-temperature air and is rapidly heated in the ejector tube, causing its volume to increase rapidly and its density to decrease. The influence of buoyancy on the direction of gas ejection cannot be ignored, and the trajectory of the gas injection will have a certain upward tilt. The speed of the airflow entering from the surroundings changes, which increases the amount of air ejected below the horizontal plane where the center of the gas outlet 112 is located (the space for naturally ejected air to enter increases), while the amount of air ejected above the plane where the center of the gas outlet 112 is located decreases (the space for naturally ejected air to enter decreases). In addition, the naturally ejected outside air also tends to rise after being rapidly heated, further reducing the amount of air above the plane where the center of the gas outlet 112 is located. As a result, the gas ejected from the gas outlet 112 and the mixed gas naturally drawn into the ejector tube 2 by the outside air will have a smaller gas flow rate above the plane where the center of the gas outlet 112 is located than the gas flow rate below the plane where the center of the gas outlet 112 is located. This will lead to uneven mixing, a decrease in the amount of ejected air, and even incomplete combustion.

[0041] Therefore, the first air outlet 122 and the second air outlet 132 are respectively arranged above and below the gas outlet 112 (here, "above" and "below" refer to their orientation in the installation state), wherein the first air outlet 122 is located above the gas outlet 112 and the second air outlet 132 is located below the gas outlet 122, as shown below. Figure 2 As shown, the first air outlet 122 is spaced above the gas outlet 112, while the second air outlet 132 is spaced below the gas outlet 112. The first air outlet 122 is used to press the gas downwards, preventing it from rising, while the second air outlet 132 ensures that air can also be supplied below the gas outlet, resulting in a uniform air intake above and below the gas outlet. Alternatively, the first air outlet 122 and the second air outlet 132 can also be arranged without any gaps, directly adjacent to the gas outlet 112.

[0042] The first air outlet 122 located at the top has an upwardly convex shape. A first upwardly convex protrusion 1221 is formed on the side away from the gas outlet 112, while a first horizontal portion 1222 is formed on the side closer to the gas outlet 112. The first protrusion 1221 is preferably an arc shape with a downward opening. Its upwardly convex shape (downward opening) can play the role of "pressing down the gas", further alleviating the problem of gas rising. Correspondingly, its first horizontal portion 1222 can play the role of "balancing the gas".

[0043] After the gas rises, the lower gas tends to "compress" the upper gas, resulting in an "asymmetrical" air intake state. In this application, to balance the ejection situation of the ejector tube, the lower second air outlet 132 is convex downwards. A second convex portion 1321 is formed on the side away from the gas outlet 112, while a second horizontal portion 1322 is formed on the side closer to the gas outlet 112. The second convex portion 1321 can guide the blown air downwards towards the wall of the second convex portion 1321, thus preventing the primary air blown out from the lower part from "compressing" the primary air blown out from the upper part. Correspondingly, the second horizontal portion 1322 can play the role of "balancing air", ultimately achieving an air intake balance between the upper and lower primary air.

[0044] The first air outlet 122 and the second air outlet 132 are each at least one. In this embodiment, the first air outlet 122 and the second air outlet 132 are each one. The first air outlet 122 and the second air outlet 132 are arranged at intervals above and below the gas outlet 112, and the parameters of the flow area and the outlet angle are adjusted accordingly to make the gas flowing out of the gas outlet 112, the air flowing out of the first air outlet 122 and the second air outlet 132 uniform and the injection volume balanced.

[0045] To further reduce the impact of gas and air rising and to ensure uniform injection, the flow area of ​​the first air outlet 122 is not less than the flow area of ​​the second air outlet 122. Preferably, the ratio of the flow area of ​​the first air outlet 122 to the flow area of ​​the second air outlet 122 is 1:1 to 2.27:1.

[0046] The flow area of ​​the first air inlet 121 of the first blower channel 12 is larger than the flow area of ​​the first air outlet 122. The flow area of ​​the first blower channel 12 gradually decreases from the first air inlet 121 to the first air outlet 122. This guides the air blown in by the blower device 3 and accelerates it (the gradual decrease in flow area from the inlet to the outlet gives the first blower channel 12 an acceleration channel shape). Furthermore, the reduced flow area of ​​the first air outlet 122 further reduces interference with the natural entrainment of external air. Preferably, the ratio of the flow area of ​​the first air outlet 122 to the flow area of ​​the first air inlet 121 is 1:1.4 to 1:1.6.

[0047] Similarly, the flow area of ​​the second air inlet 131 of the second blower channel 13 is larger than that of the second air outlet 132. The flow area of ​​the second blower channel 13 gradually decreases from the second air inlet 131 to the first air outlet 132, thereby guiding the air blown in by the blower device 3 and accelerating it (the gradual decrease in flow area from the inlet to the outlet makes the second blower channel 13 resemble an acceleration channel). Furthermore, the reduced flow area of ​​the second air outlet 132 further reduces interference with the natural entrainment of external air. Preferably, the ratio of the flow area of ​​the second air outlet 132 to the second air inlet 131 is 1:1.4 to 1:1.6.

[0048] Due to the limited installation space within the cooktop, the end face areas of the gas outlet 112, the first air outlet 122, and the second air outlet 132 on the air intake seat 1 are relatively small, and the air inlet port (not shown) of the injector tube is also small. To ensure that the first air outlet 122 and the second air outlet 132 are as far away from the gas outlet 112 as possible, reducing the impact on natural gas injection, and to prevent the air ejected from the first air outlet 122 and the second air outlet 132 from directly impacting the edge of the air inlet port of the injector tube, it is preferable that the airflow direction ejected from the first air outlet 122 and the second air outlet 132 tends to be towards the horizontal plane where the center of the gas outlet 112 is located (the horizontal plane when the injector assembly is horizontally installed). In this embodiment, where the first air outlet 122 and the second air outlet 132 are arranged vertically, the air ejected from the upper first air outlet 122 is inclined downwards, while the air ejected from the lower second air outlet 132 is inclined upwards. In addition, the gas ejected from the gas outlet 122 can also provide some kinetic energy to the airflow, thus accelerating it.

[0049] To guide the airflow in the desired direction, the vertical distance between the highest point of the first air inlet 121 of the first blower duct 12 located above the gas outlet duct 11 and the horizontal plane where the center of the gas outlet 112 is located must be greater than the vertical distance between the highest point of the first air outlet 122 and the horizontal plane where the center of the gas outlet 112 is located. Similarly, the vertical distance between the lowest point of the second air inlet 131 of the second blower duct 13 located below the gas outlet duct 11 and the horizontal plane where the center of the gas outlet 112 is located must be greater than the vertical distance between the lowest point of the second air outlet 132 and the horizontal plane where the center of the gas outlet 112 is located.

[0050] Furthermore, in this embodiment, the vertical distance between the lowest point of the first air inlet 121 of the first blower duct 12 located above the gas outlet duct 11 and the horizontal plane containing the center of the gas outlet 112 is less than the vertical distance between the lowest point of the first air outlet 122 and the horizontal plane containing the center of the gas outlet 112, and the inclination of the line connecting the two highest points is greater than the inclination of the line connecting the two lowest points. Similarly, the vertical distance between the highest point of the second air inlet 131 of the second blower duct 13 located below the gas outlet duct 11 and the horizontal plane containing the center of the gas outlet 112 is less than the vertical distance between the highest point of the second air outlet 132 and the horizontal plane containing the center of the gas outlet 112, and the inclination of the line connecting the two lowest points is greater than the inclination of the line connecting the two highest points. This ensures the direction of airflow introduced by the blower.

[0051] Alternatively, the vertical distance between the lowest point of the first air inlet 121 of the first blower duct 12 located above the gas outlet duct 11 and the horizontal plane where the center of the gas outlet 112 is located can also be greater than or equal to the vertical distance between the lowest point of the first air outlet 122 and the horizontal plane where the center of the gas outlet 112 is located; the vertical distance between the highest point of the second air inlet 131 of the second blower duct 13 located below the gas outlet duct 11 and the horizontal plane where the center of the gas outlet 112 is located can also be greater than or equal to the vertical distance between the highest point of the second air outlet 132 and the horizontal plane where the center of the gas outlet 112 is located.

[0052] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. An ejector assembly, comprising an air inlet (1), the air inlet (1) having: The gas outlet (112) is used to connect with the gas source to supply gas flow; The first air outlet (122) and the second air outlet (132) are respectively used to supply air from the blower air source in fluid communication with the blower air source. Its features are: The first air outlet (122) is arranged above the gas outlet (112), and the second air outlet (132) is arranged below the gas outlet (112).

2. The ejector assembly according to claim 1, characterized in that: The first air outlet (122) has an upwardly protruding first protrusion (1221) on the side away from the gas outlet (112).

3. The ejector assembly according to claim 1, characterized in that: The second air outlet (132) has a downwardly protruding second protrusion (1321) on the side away from the gas outlet (112).

4. The ejector assembly according to any one of claims 1 to 3, characterized in that: The flow area of ​​the first air outlet (122) located above the gas flow outlet (112) is not less than the flow area of ​​the second air outlet (132) located below the gas flow outlet (112).

5. The ejector assembly according to claim 4, characterized in that: The ratio of the flow area of ​​the first air outlet (122) located above the gas flow outlet (112) to the flow area of ​​the second air outlet (132) located below the gas flow outlet (112) is 1:1 to 2.27:

1.

6. The ejector assembly according to any one of claims 1 to 3, characterized in that: The air intake seat (1) also includes a first air duct (12), which has two opposite ends, one end of which is a first air inlet (121) and the other end of which is the first air outlet (122) mentioned above. The flow area of ​​the first air duct (12) gradually decreases from the first air inlet (121) to the first air outlet (122).

7. The ejector assembly according to any one of claims 1 to 3, characterized in that: The air intake seat (1) also includes a second air duct (13), which has two opposite ends, one end of which is a second air inlet (131) and the other end of which is the aforementioned second air outlet (132). The flow area of ​​the second air duct (13) gradually decreases from the second air inlet (131) to the second air outlet (132).

8. The ejector assembly according to any one of claims 1 to 3, characterized in that: The air intake seat (1) further includes a gas outlet channel (11), a first blower channel (12), and a second blower channel (13). The gas outlet channel (11) has two opposite ends, one end of which is a gas inlet (111) and the other end of which is the gas outlet (112). The gas inlet (111) is used to communicate with the gas source. The first blower channel (12) has two opposite ends, one end of which is a first air inlet (121) and the other end of which is the first air outlet (122). The second blower channel (13) has two opposite ends, one end of which is a second air inlet (131) and the other end of which is the second air outlet (132). The gas outlet channel (11), the first blower channel (12), and the second blower channel (13) extend in the same direction.

9. The ejector assembly according to claim 8, characterized in that: When the ejector assembly is installed horizontally, the vertical distance between the highest point of the first air inlet (121) of the first blower channel (12) above the gas outlet channel (11) and the horizontal plane where the center of the gas outlet (112) is located is greater than the vertical distance between the highest point of the first air outlet (122) and the horizontal plane where the center of the gas outlet (112) is located. The vertical distance between the lowest point of the second air inlet (131) of the second blower channel (13) below the gas outlet channel (11) and the horizontal plane where the center of the gas outlet (112) is located is greater than the vertical distance between the lowest point of the second air outlet (132) and the horizontal plane where the center of the gas outlet (112) is located. This results in the airflow direction of the first air outlet (122) and the second air outlet (132) being towards the horizontal plane where the center of the gas outlet (112) is located.

10. The ejector assembly according to any one of claims 1 to 3, characterized in that: The first air outlet (122) is arranged at intervals above the gas outlet (112).

11. The ejector assembly according to any one of claims 1 to 3, characterized in that: The ejector assembly also includes an ejector tube (2), the gas flow outlet (112) and the air inlet port of the ejector tube (2) are arranged opposite to each other and have a gap (4) for natural ejection of outside air.

12. An ejection system, characterized in that: The application has an ejector assembly as described in any one of claims 1 to 11, and the ejector system further includes a blower (3) that provides a blower air source.

13. A gas stove, characterized in that: The application has an ejector assembly as described in any one of claims 1 to 12.

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