Ejector assembly, ejector system and gas stove of a burner

Abstract

The invention discloses a kind of burner's injection assembly, including injection pipe and air inlet seat, injection pipe has air inlet, air inlet has central region and surrounding region around central region;Air inlet seat has gas passage and blast air passage, gas inlet of gas passage is used to be in fluid communication with gas source, air inlet of blast air passage is used to be in fluid communication with blast air source;Along the direction of gas flow, air inlet seat is located in the upstream of the air inlet of injection pipe;Air outlet of blast air passage is opposite to the central region of air inlet;Gas outlet of gas passage is at least two, and it is opposite to the surrounding region of the above-mentioned air inlet, and is arranged along the first circumferential interval.This invention also discloses injection system and gas stove with the above-mentioned injection assembly.Compared with prior art, the invention can avoid blast air flow to influence natural injection.

Description

TECHNICAL FIELD

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

[0002] In the existing gas stove, in order to improve the supply of primary air and make the gas burn more completely, people have designed a blast type burner, such as the utility model patent "Ejector Type Blast Burner for Gas Stove" (Patent No. ZL200720088825.9) disclosed in the structure, which comprises an ejector, a gas connection pipe, a gas nozzle, a combustion chamber, a flame stabilizing hole assembly, an air chamber and an axial flow fan. A circle of secondary air ports is arranged at the bottom edge of the combustion chamber, and the flame stabilizing hole assembly is uniformly distributed at the bottom of the combustion chamber. The bottom of the flame stabilizing hole assembly is in communication with the head of the ejector, the tail of the ejector is connected with the axial flow fan through the air chamber, the gas nozzle is connected with the gas connection pipe and is fixed in the center of the air chamber.

[0003] The existing ejector assembly has the following technical problems:

[0004] 1. Since the gas nozzle is located in the center of the air chamber, the air flow blown out of the air chamber will surround the gas nozzle, so the air introduced by the blast device will form a "wind curtain" to blow the air near the air inlet of the ejector pipe outward, thereby affecting the ability of the gas nozzle to inject natural air;

[0005] 2. The mixing of the gas jetted out of the gas nozzle and the air in the ejector pipe is not uniform, for example: when the burner is working, the air in the stove shell is heated to cause a high ambient temperature, and the temperature increases more obviously as it approaches the burner. When the temperature is high, the gas jetted out of the gas nozzle is rapidly heated, the volume rapidly increases, the density decreases, and the influence of buoyancy on the direction of gas injection cannot be ignored. The trajectory of the gas jet will be inclined upward to some extent, so that the mixing of the air and the gas in the ejector pipe is not uniform. SUMMARY

[0006] The first technical problem to be solved by the present application is to provide an ejector assembly of a burner to avoid the influence of blast air flow on natural injection in view of the status quo of the prior art.

[0007] The second technical problem to be solved by the present application is to provide an ejector assembly of a burner to improve the mixing uniformity between the gas jetted out of the gas outlet and the air blasted.

[0008] The third technical problem to be solved by the present application is to provide an ejector system with the above-mentioned ejector assembly.

[0009] The fourth technical problem to be solved by the present application is to provide a gas stove with the above-mentioned injection system.

[0010] The technical solution adopted by the present application to solve the first technical problem is an injection assembly of a burner, comprising:

[0011] The injection pipe has an air inlet, the air inlet has a central region and a peripheral region around the central region, and the length direction of the injection pipe is a first axial direction, and the direction around the first axial direction is a first peripheral direction;

[0012] The air inlet of the gas passage is used to be in fluid communication with a gas source, and the air inlet of the air passage is used to be in fluid communication with a blast air source;

[0013] The air inlet of the gas passage is used to be in fluid communication with a gas source, and the air inlet of the air passage is used to be in fluid communication with a blast air source;

[0014] The air inlet of the gas passage is used to be in fluid communication with a gas source, and the air inlet of the air passage is used to be in fluid communication with a blast air source;

[0015] The air outlet of the air passage is opposite to the central region of the air inlet;

[0016] The gas outlet of the gas passage is at least two, and is opposite to the peripheral region of the air inlet and is arranged in the first peripheral direction.

[0017] In this way, the gas discharged from the gas outlet can better induce the natural air from the outside without being affected by the air flow discharged from the air outlet; and since the air outlet is directed to the central region of the air inlet, the negative pressure of the central region can be increased, thereby further improving the natural induction effect.

[0018] The gas passage and the air passage can be isolated or not isolated. Preferably, the gas passage and the air passage are isolated. The isolated gas passage and air passage enable the gas and the blast air to be mixed only in the injection pipe, so that the gas passage only has gas and no air, thereby avoiding the explosion of the gas in the gas passage due to contact with air.

[0019] The air inlet of the gas passage is used to be in fluid communication with a gas source, and the air inlet of the air passage is used to be in fluid communication with a blast air source;

[0020] To further avoid the influence of the blast air flow on the natural induction, preferably, there is a gap between the gas outlet of the gas passage and the air inlet of the induction pipe in the gas flow direction. When the blast air is on, the peripheral area of the gas outlet can induce the natural air; when the blast air is off, the gas emitted from the gas outlet can also induce the natural air, and at this time, the gas stove can work at a small fire.

[0021] To further solve the second technical problem, preferably, the two gas outlets of the gas passage are distributed on both sides of the air outlet of the blast air passage. In this way, the blast air blown from both sides and the central blast air can be well mixed.

[0022] Preferably, the air outlet of the blast air passage is in the shape of a strip extending upward and downward. In this way, the upward and downward extending air outlet cooperates with the gas outlets on both sides to improve the mixing of the blast air and the gas, and further improve the ability of the gas to induce the natural air.

[0023] To enable the blast air flow to be smoothly discharged, preferably, the blast air passage extends along the first axis. In this way, the blast air flow can flow along the blast air passage and be discharged from the air outlet, avoiding the influence of the turning on the fluid.

[0024] Further preferably, in the gas flow direction, the gas passage has an air inlet section, a buffer section and at least two gas outlet sections connected in sequence, the air inlet section extends in a direction intersecting the first axis, and the port of the air inlet section is the gas inlet of the gas passage, the gas outlet sections extend along the first axis and are arranged at intervals along the first circumference, and the port of each gas outlet section is the gas outlet. In this way, the gas inlet and the air inlet are not on the same side of the air inlet seat, which facilitates the input of the gas source and the installation of the blast device; at the same time, the arrangement of the air inlet section, the buffer section and the gas outlet section can ensure that the gas is smoothly and stably output from the gas outlet, reducing the risk of gas turbulence.

[0025] To enable the gas passage and the blast air passage in the air inlet seat to work better, preferably, the inside of the air inlet seat has an upper cavity and a lower cavity arranged upward and downward and extending along the first axis, the two cavities are separated by an intermediate baffle, the air outlet of the blast air passage is in the shape of a strip extending upward and downward, and the upper end and the lower end of the air outlet are opposite and communicate with the upper cavity and the lower cavity respectively, and the upper cavity and the lower cavity jointly constitute the blast air passage.

[0026] The intermediate baffle is shaped with hollow parts as the buffer section and the gas outlet section of the gas passage, and the extension direction of the buffer section is consistent with the extension direction of the air inlet section of the gas passage.

[0027] Thus, the intermediate baffle can be used to form the buffer section and the outlet section of the gas passage, and can separate the internal space of the air inlet seat, so that the gas passage and the blast air passage do not interfere with each other, and both can work well to make the gas flow smoothly from the corresponding passage.

[0028] Meanwhile, before entering the injection pipe, the blast air flow can fully contact the upper and lower surfaces of the intermediate baffle, and the gas in the buffer section and the outlet section of the gas passage can be cooled to reduce the upward floating of the gas.

[0029] To further solve the second technical problem, preferably, the gas outlet has at least three and is arranged along the first circumferential direction. Thus, the injection amount of natural air can be increased, and the mixing uniformity of the gas and the blast air and the natural air can be improved.

[0030] Preferably, the air outlet is circular, and each gas outlet is arranged at the periphery of the air outlet at equal intervals.

[0031] To make the blast air flow smoothly, preferably, the blast air passage extends along the first axial direction. Thus, the blast air flow can flow along the blast air passage and be discharged from the air outlet, avoiding the influence of the turning on the fluid.

[0032] Further preferably, along the gas flow direction, the gas passage has an air inlet section, a buffer section and a plurality of outlet sections connected in sequence, the air inlet section extends along a direction intersecting the first axial direction, and the port of the air inlet section is the gas inlet of the gas passage, the outlet section extends along the first axial direction and is arranged at the periphery of the blast air passage along the first circumferential direction, and the port of the outlet section is the gas outlet; the buffer section is provided with the blast air passage. Thus, the gas inlet and the air inlet are not on the same side of the air inlet seat, which facilitates the input of the gas source and the installation of the blast device; at the same time, the arrangement of the air inlet section, the buffer section and the outlet section can ensure that the gas is smoothly and stably output from the gas outlet, reducing the risk of gas turbulence.

[0033] To further solve the second technical problem, preferably, the air inlet seat has a peripheral blast passage, the blast inlet of which is used to be in fluid communication with the blast air source, the blast outlet has at least three and is arranged along the first circumferential direction, and each gas outlet has at least one blast outlet on both sides. The design of the plurality of blast outlets can ensure the balance of the blast, and the interval arrangement between the blast outlet and the gas outlet can: 1. the part of the peripheral region of the gas outlet which is not provided with the air outlet can be naturally injected with external air, thereby avoiding the influence of the blast outlet on the natural injection; 2. it is conducive to the mixing of the gas and the blast, and can improve the mixing uniformity of the gas and the blast.

[0034] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: an ejection system having the ejection assembly as described above, characterized in that it also includes a blowing device as a blowing air source, and the air outlet end of the blowing device is fluidly connected to the air inlet of the blowing air channel of the air inlet seat.

[0035] The technical solution adopted by the present invention to solve the fourth technical problem is: a gas cooker with the injection system as described above.

[0036] Compared with the prior art, the advantages of the present invention are: by arranging the air outlet of the blast air channel opposite to the central area of ​​the air inlet, and designing the gas outlet of the gas channel to be at least two, opposite to the surrounding area of ​​the air inlet, and arranged at intervals along the first circumferential direction, the gas ejected from the gas outlet can better draw in the natural air from the outside without being affected by the airflow discharged from the air outlet; and because the air outlet of the blast air channel points to the central area of ​​the air inlet, the negative pressure in the central area can be increased, thereby further enhancing the effect of natural entrainment; and the mixing effect of air and gas is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the structure of the ejection assembly in Example 1 of the present invention;

[0038] Figure 2 for Figure 1 A longitudinal cross-sectional view of

[0039] Figure 3 Schematic diagram of the partial structure of the ejector assembly in Example 1 of the present invention (the ejector tube is omitted);

[0040] Figure 4 Schematic diagram of the partial structure of the ejection assembly in another perspective of the first embodiment of the present invention (the ejection tube is omitted);

[0041] Figure 5 for Figure 3 Cross-sectional view along the AA axis;

[0042] Figure 6 for Figure 4 Cross-sectional view along the BB direction;

[0043] Figure 7 Schematic diagram of the structure of the gas cooker in the first embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the partial structure of the ejection assembly in the second embodiment of the present invention (the ejection tube is omitted);

[0045] Figure 9 for Figure 8 A longitudinal sectional view (the section is a plane extending along the first axial direction);

[0046] Figure 10 for Figure 8 (the cross section is a vertical plane extending perpendicular to the first axial direction);

[0047] Figure 11 Schematic diagram of the partial structure of the ejector assembly in the third embodiment of the present invention (the ejector tube is omitted). DETAILED DESCRIPTION

[0048] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0049] Example 1:

[0050] like Figures 1-7 FIG. 1 shows a preferred embodiment 1 of a burner ejection assembly, an ejection system and a gas cooker of the present invention. The ejection assembly includes an ejection pipe 1 and an air inlet seat 4 .

[0051] The ejector tube 1 is basically arranged horizontally and has an air inlet 10. The air inlet 10 has a central area 11 and a peripheral area 12 located around the central area 11. The longitudinal direction of the ejector tube 1 is referred to as a first axial direction, and the direction around the first axial direction is referred to as a first circumferential direction.

[0052] Along the flow direction of the gas, the gas inlet seat 4 is located upstream of the gas inlet 10 of the ejector tube 1. The gas inlet seat 4 is formed with a gas channel 41 and a blast air channel 42 isolated from each other and a gas outlet end wall 400 opposite to the gas inlet 10 of the ejector tube 1.

[0053] In this embodiment, the interior of the air inlet seat 4 has an upper cavity 4a and a lower cavity 4b, which are arranged one above the other and extend along the first axial direction. The two are separated by an intermediate baffle 44. The air outlet 42b of the blast air channel 42 is in the shape of a strip extending in the up and down directions, and the upper end portion and the lower end portion of the air outlet 42b respectively pass through the above-mentioned air outlet end wall 400, and are opposite to and connected with the upper cavity 4a and the lower cavity 4b. At this time, the upper cavity 4a and the lower cavity 4b together constitute the above-mentioned blast air channel 42, and the air outlet 42b of the blast air channel 42 is opposite to the central area 11 of the air inlet 10; the air inlet 42b of the blast air channel 42 is used to communicate with the blast air source fluid, and is located on the end wall of the air inlet seat 4 opposite to the air outlet end wall 400.

[0054] In the direction of the gas flow, the gas passage 41 has sequentially connected gas inlet section 411, buffer section 412 and two gas outlet sections 413. The gas inlet section 411 extends in a direction perpendicular to the first axial direction, and the port of the gas inlet section 411 is the gas inlet 41a of the gas passage 41, which is used to be in fluid communication with the gas source. The gas outlet sections 413 extend along the first axial direction and are arranged along the first circumferential direction. The port of each gas outlet section 413 is the gas outlet 41b of the gas passage 41, which penetrates the above-mentioned gas outlet end wall 400, is opposite to the peripheral region 12 of the gas inlet 10, and is located on both sides of the air outlet 42b of the blast air passage 42. In the present embodiment, the intermediate baffle 44 is shaped to have hollow parts as the buffer section 412 and the gas outlet section 413 of the gas passage 41, and the extension direction of the buffer section 412 is consistent with the extension direction of the gas inlet section 411 of the gas passage 41. In the direction of the gas flow, there is a gap 40 between the gas outlet 41b of the gas passage 41 and the gas inlet 10 of the ejector tube 1. In this way, the gas ejected from the gas outlet 41b can better induce the ambient air without being affected by the air flow discharged from the air outlet 42b; and since the air outlet 42b is directed to the central region 11 of the gas inlet 10, the negative pressure of the central region 11 can be increased, thereby further improving the natural induction effect.

[0055] As shown in Figure 7 , the ejector system of the present embodiment includes the above-mentioned ejector assembly and the blast device 5 as the blast air source. The gas outlet of the blast device 5 is in fluid communication with the air inlet 42a of the blast air passage 42 of the gas inlet seat 4. In this way, the air flow output by the blast device 5 can flow out from the air outlet 42b through the blast air passage 42. The blast device 5 can adopt an existing blast fan. By controlling the start or stop of the blast fan, it can be controlled whether the air flow flows out from the air outlet 42b. Specifically, when the blast fan is on, the peripheral region of the gas outlet 41b can induce the ambient air naturally; when the blast fan is off, the gas ejected from the gas outlet 41b can also induce the ambient air, at this time, the gas stove can work at a small fire. At the same time, by controlling the working power of the blast device 5, the flow rate and flow volume of the air flow flowing out from the air outlet 42b can be controlled.

[0056] As shown in Figure 7 , the gas stove of the present embodiment has a burner in addition to the above-mentioned ejector system, which is in communication with the gas outlet of the ejector tube 1.

[0057] Embodiment Two:

[0058] As shown in Figures 8-10The figure shows a preferred embodiment 2 of a burner ejection assembly, ejection system, and gas cooker according to the present invention. This embodiment is substantially identical to the first embodiment, except that the air outlet 42b is circular, and there are three gas outlets 41b, equally spaced along the first circumferential direction and arranged around the periphery of the air outlet 42b. Furthermore, the blast air passage 42 is a strip-shaped passage extending along the first axial direction. Along the gas flow direction, the gas passage 41 comprises an air inlet section 411, a buffer section 412, and three air outlet sections 413, which are interconnected in sequence. The air inlet section 411 extends perpendicular to the first axial direction, with the end of the air inlet section 411 serving as the gas inlet 41a of the gas passage 41. The air outlet sections 413 extend along the first axial direction and are equally spaced along the first circumferential direction around the periphery of the blast air passage 42. The ends of each air outlet section 413 serve as the gas outlet 41b of the gas passage 41. The buffer section 412 provides a portion of the blast air passage 42 with a portion extending therethrough.

[0059] Example 3:

[0060] like Figure 11 The figure shows a preferred embodiment 3 of an ejection assembly, ejection system, and gas cooker of the present invention. This embodiment is substantially the same as the second embodiment, except that in this embodiment, the air inlet seat 4 is further formed with a peripheral blast channel 43, whose blast inlet is used to communicate with the blast air source fluid, and has three blast outlets 43b spaced apart along the first circumferential direction, with each blast outlet 43b flanked by a gas outlet 41b. Specifically, the gas outlets 41b and the air outlets 42b are spaced apart in sequence: specifically, one gas outlet 41b, one blast outlet 43b, another gas outlet 41b, another blast outlet 43b, and so on.

[0061] In this way, the spacing arrangement between the blast outlet and the gas outlet can enable the part of the peripheral area of ​​the gas outlet where the blast outlet 43b is not set to be naturally drawn in the outside air; at the same time, multiple blast outlets 43b can ensure the balance of blast volume, which is beneficial to the mixing between gas and blast, and improves the mixing uniformity between gas and blast.

[0062] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A burner ejection assembly comprising: An ejector tube (1) has an air inlet (10), wherein the air inlet (10) has a central area (11) and a peripheral area (12) located around the central area (11), wherein the longitudinal direction of the ejector tube (1) is referred to as a first axial direction, and the direction around the first axial direction is referred to as a first circumferential direction; An air inlet seat (4) has a gas channel (41) and a blast air channel (42), wherein the gas inlet (41a) of the gas channel (41) is used for communicating with a gas source fluid, and the air inlet (42a) of the blast air channel (42) is used for communicating with a blast air source fluid; Along the direction of gas flow, the gas inlet seat (4) is located upstream of the gas inlet (10) of the ejector tube (1); Its characteristics are: The air outlet (42b) of the blast air passage (42) is opposite to the central area (11) of the air inlet (10); The gas channel (41) has at least two gas outlets (41b), both of which are opposite to the surrounding area (12) of the gas inlet (10) and are arranged at intervals along the first circumferential direction.

2. The ejection assembly according to claim 1, characterized in that: The gas channel (41) and the blast air channel (42) are isolated from each other.

3. The ejection assembly according to claim 1, characterized in that: The air inlet seat (4) is formed with a gas channel (41) and a blast air channel (42) and an air outlet end wall (400) opposite to the air inlet (10) of the ejector tube (1), and the gas outlet (41b) of the gas channel (41) and the air outlet (42b) of the blast air channel (42) both penetrate the air outlet end wall (400).

4. The ejection assembly according to claim 3, characterized in that: In the direction of gas flow, a gap (40) exists between the gas outlet (41b) of the gas channel (41) and the gas inlet (10) of the ejector tube (1).

5. The ejection assembly according to claim 1, characterized in that: The two gas outlets (41b) of the gas channel (41) are distributed on both sides of the air outlet (42b) of the blast air channel (42).

6. The ejection assembly according to claim 5, characterized in that: The air outlet (42b) of the blast air passage (42) is in the shape of a strip extending up and down.

7. The ejection assembly according to claim 5, characterized in that: The blast air passage (42) extends along the first axial direction.

8. The ejection assembly according to claim 7, characterized in that: Along the gas flow direction, the gas channel (41) has an inlet section (411), a buffer section (412) and at least two outlet sections (413) that are sequentially connected. The inlet section (411) extends along a direction intersecting the first axial direction, and the port of the inlet section (411) is the gas inlet (41a) of the gas channel (41). The outlet sections (413) extend along the first axial direction and are arranged at intervals along the first circumferential direction. The port of each outlet section (413) is the gas outlet (41b).

9. The ejection assembly according to claim 8, characterized in that: The air inlet seat (4) has an upper cavity (4a) and a lower cavity (4b) arranged one above the other and extending along a first axial direction, and the upper cavity (4a) and the lower cavity (4b) are separated by an intermediate baffle (44). The air outlet (42b) of the blast air passage (42) is in the shape of a strip extending in the vertical direction, and the upper end and the lower end of the air outlet (42b) are respectively opposite to and communicate with the upper cavity (4a) and the lower cavity (4b). The upper cavity (4a) and the lower cavity (4b) together constitute the blast air passage (42). The intermediate baffle (44) is formed with a hollow portion serving as a buffer section (412) and an air outlet section (413) of the gas channel (41), and the extending direction of the buffer section (412) is consistent with the extending direction of the air inlet section (411) of the gas channel (41).

10. The ejection assembly according to claim 1, characterized in that: There are at least three gas outlets (41b) arranged at intervals along the first circumferential direction.

11. The ejection assembly according to claim 10, characterized in that: The air outlet (42b) is circular, and the gas outlets (41b) are arranged at equal intervals on the periphery of the air outlet (42b).

12. The ejection assembly according to claim 10, characterized in that: The blast air passage (42) extends along the first axial direction.

13. The ejection assembly according to claim 12, characterized in that: Along the gas flow direction, the gas channel (41) has an air inlet section (411), a buffer section (412) and a plurality of air outlet sections (413) that are sequentially connected. The air inlet section (411) extends along a direction intersecting the first axial direction, and the port of the air inlet section (411) is the gas inlet (41a) of the gas channel (41). The air outlet sections (413) extend along the first axial direction and are arranged at intervals along the first circumferential direction on the periphery of the blast air channel (42). The port of each air outlet section (413) is the gas outlet. The buffer section (412) is provided for a portion of the blast air channel (42) to pass through.

14. The ejection assembly according to claim 11, characterized in that: The air inlet seat (4) also has a peripheral blast channel (43), the blast inlet of which is used to communicate with the blast gas source fluid, and the blast outlets (43b) thereof are at least three and are arranged at intervals along the first circumferential direction, and each gas outlet (41b) has at least one blast outlet (43b) on both sides.

15. An ejection system having an ejection assembly according to any one of claims 1 to 14, characterized in that: It also includes a blast device (5) as a blast air source, wherein the air outlet end of the blast device (5) is in fluid communication with the air inlet (42a) of the blast air passage (42) of the air inlet seat (4).

16. A gas cooker having the injection system according to claim 15.

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