CN110220196B

CN110220196B - Ejector pipe and cooker ejector comprising same

Info

Publication number: CN110220196B
Application number: CN201910407009.7A
Authority: CN
Inventors: 程永超; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2021-07-02
Anticipated expiration: 2039-05-16
Also published as: CN110220196A

Abstract

The invention discloses an injection pipe and a cooker injector comprising the same. Compare in traditional circular, oval or other circular arc class draw the ejector tube, the polygon can possess more inner wall girths under the condition that occupies the same cross sectional area, consequently, under the same condition of pipeline cross-section, the inner wall area who draws the ejector tube can effectively be promoted to this structure to inhale more air under the same condition of pressure on this inner wall surface, improve and draw the ejector tube and draw the effect of penetrating to the air.

Description

Ejector pipe and cooker ejector comprising same

Technical Field

The invention relates to the field of burners, in particular to an ejector pipe and a cooker ejector comprising the same.

Background

The ejector pipe is one of important components of the kitchen range, and is used for ejecting air in the surrounding environment by receiving fuel gas from the nozzle through fuel gas flow. The cross section of the injection pipe is generally circular or elliptical, and the injection pipe can be divided into a contraction section, a horizontal section and an expansion section along the gas flowing direction according to the change of the cross section.

The existing injection pipe has poor air injection capacity and directly influences the combustion effect of the stove. Therefore, how to improve the air ejection capacity of the ejection pipe becomes a research focus of research and development designers.

Disclosure of Invention

The invention aims to overcome the defect that the injection pipe in the prior art is poor in air injection capacity, and provides an injection pipe and a cooker injector comprising the same.

The invention solves the technical problems through the following technical scheme:

the injection pipe is provided with a contraction section, and the cross section of an inner cavity of the contraction section is polygonal.

Compare in traditional circular, oval or other circular arc class draw the ejector tube, the polygon can possess more inner wall girths under the condition that occupies the same cross sectional area, consequently, under the same condition of pipeline cross-section, the inner wall area who draws the ejector tube can effectively be promoted to this structure to inhale more air under the same condition of pressure on this inner wall surface, improve and draw the ejector tube and draw the effect of penetrating to the air.

Meanwhile, the structure can not change the actual space occupied by the injection pipe, so that the layout structure among all the parts in the cooker can not be influenced.

Preferably, the injection pipe is further provided with a horizontal section, and the shape of the section of the inner cavity of the horizontal section is the same as that of the section of the inner cavity of the contraction section, so that airflow can smoothly flow.

Preferably, the injection pipe is provided with a gas channel for communicating with a fire cover of the stove, and an opening of the gas channel on the injection pipe is positioned on the side wall surface of the horizontal section.

Preferably, the openings are circumferentially arranged on the side wall surface of the horizontal section along the section of the inner cavity of the horizontal section, and the apertures of the plurality of openings become larger gradually as the distance from the openings to the center of the horizontal section approaches.

Through the structure, the cross section of the inner cavity of the horizontal section is in a non-circular shape, the outflow speed of each position of the horizontal section is balanced, and the mixed gas of gas and air can be better ensured to uniformly flow out.

Preferably, the cross section of the inner cavity of the contraction section is in a polygonal star shape, so that the perimeter of the inner wall is further improved, and the injection effect is improved.

A cooktop eductor, comprising:

the injection pipe is as described above;

the nozzle with draw the ejector tube and set gradually along airflow direction, the nozzle includes a plurality of first exports, first export all faces the entry direction setting of shrink section, and is a plurality of first export is followed the inner chamber edge of shrink section is circumference arranges in proper order.

This cooking utensils ejector has improved the air current velocity of flow on the inner wall surface of shrink section through directly acting on the inner wall of shrink section with the gas of blowout in the first export of nozzle, makes the inner wall surface correspond and produces bigger negative pressure to improve the air inspiration capacity who draws the injection pipe. Thereby compare in prior art and making the export of nozzle towards the intermediate position setting of shrink section to the gas flow that flows through being located the intermediate position drives the injection mode that is located the air current flow of inner wall surface, has effectively promoted and has penetrated the effect.

Preferably, the cross-sectional shape of the inner cavity of the contraction section is a polygonal star shape, the number of the first outlets is the same as the number of sharp corners of the cross-sectional shape of the inner cavity of the contraction section, and the plurality of first outlets are respectively arranged corresponding to the sharp corners of the inner wall of the contraction section.

The structure is arranged to enable the gas sprayed from the first outlet to directly act on the inner wall surfaces at two sides of the sharp corner, and the air flow speed among the sharp corners of the contraction section can be kept relatively balanced.

Preferably, the shape of the outlet of the first outlet is the same as the shape of the corresponding sharp corner of the inner wall, so that the air flow sprayed out of the first outlet is matched with the shape of the sharp corner of the contraction section, and the air flow velocity on the surface of the inner wall is further improved.

Preferably, the nozzle further comprises an air inlet section and a buffer chamber, the air inlet section, the buffer chamber and the first outlet are sequentially arranged along the air flow direction and are communicated with each other, the cross section shape of an inner cavity of the buffer chamber is the same as that of an inner cavity of the contraction section, and the shape of the buffer chamber is matched with the position layout of the first outlet.

Preferably, the nozzle further comprises a second outlet, the second outlet being disposed towards a central position of the convergent section.

The second outlet is used for supplying air to the middle position of the injection pipe so as to improve the integral flow rate of the air flow in the injection pipe.

The positive progress effects of the invention are as follows:

in the injection pipe and the cooker injector comprising the same, compared with the traditional injection pipe such as a round pipe, an oval pipe or other arc-shaped pipes, the section shape of the inner cavity of the contraction section of the injection pipe can be larger than that of the traditional injection pipe, and the polygon can have more inner wall girth under the condition of occupying the same section area. Therefore, under the condition that the pipeline sections are the same, the structure can effectively improve the inner wall area of the injection pipe, so that more air is sucked under the condition that the pressure of the inner wall surface is the same, the injection effect of the injection pipe on the air is improved, and meanwhile, the space occupied by the injection pipe cannot be changed.

Drawings

Fig. 1 is a schematic perspective view of a cooker ejector according to embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the relative positions of a nozzle and a contraction section of an injection pipe of a cooker injector in embodiment 1 of the invention.

Fig. 3 is a schematic view of the internal structure of a cooker ejector according to embodiment 1 of the present invention.

Fig. 4 is a schematic perspective view of a cooker ejector according to embodiment 2 of the present invention.

Description of reference numerals:

direction of air flow A

Nozzle 1, first outlet 11, second outlet 12, air inlet section 13, buffer chamber 14

Injection pipe 2

Constriction 21, lumen edge 21a, cusp 21b

Horizontal segment 22, sharp corner 22b

Expansion segment 23

Flange 31

First opening 41

Second opening 42

Third opening 43

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1 and 2, the invention provides a cooker ejector, which comprises a nozzle 1 and an ejector pipe 2 which are sequentially arranged along an airflow direction a. The injection pipe 2 is divided into three parts, i.e., a contraction section 21, a horizontal section 22 and an expansion section 23 according to the change of the cross section along the gas flowing direction, and the nozzle 1 includes a plurality of first outlets 11, the first outlets 11 are all arranged towards the inlet direction of the contraction section 21, and the first outlets 11 are sequentially and circumferentially arranged along the inner cavity edge 21a of the contraction section 21 so as to surround the inner cavity of the contraction section 21 (see fig. 2 in particular). Through this structure setting, nozzle 1 can directly be used for on the inner wall of shrink section 21 from the gas of 11 spun in the first export, has improved the air current velocity of flow on the inner wall surface of shrink section 21, makes the inner wall surface correspond and produces bigger negative pressure to improve the air intake of drawing and penetrate pipe 2, thereby improve the whole effect of drawing of cooking utensils ejector.

Compared with the injection mode that the outlet of the nozzle 1 is arranged towards the middle position of the contraction section 21 to drive the airflow on the surface of the inner wall to flow through the flowing of the fuel gas in the middle position in the prior art, the cooker injector disclosed by the invention enables the fuel gas to be directly sprayed on the surface of the inner wall of the contraction section 21 by changing the outlet position of the nozzle 1, so that the injection effect is effectively improved.

In addition, draw the inner chamber cross-sectional shape of the shrink section 21 of penetrating pipe 2 to be the polygon, compare in traditional circular, oval or other circular arc etc. draw and penetrate the pipe, the polygon can possess more inner wall girths under the condition that occupies the same cross sectional area, consequently, under the same condition of pipeline cross-section, this structure can effectively promote the inner wall area of penetrating pipe 2 to improve this and penetrate the pipe 2 and to drawing the effect to the air. Meanwhile, the structure does not change the actual space occupied by the injection pipe 2, so that the layout structure among all the parts in the cooker is not influenced.

In this embodiment, as shown in fig. 3, the cross-sectional shape of the inner cavity of the contraction section 21 is a polygonal star shape to further increase the perimeter of the inner wall and improve the injection effect.

In the present embodiment, the cross-sectional shape of the inner cavity of the constriction 21 is embodied as a four-pointed star, and the number of first outlets 11 of the nozzle 1 is exactly the same as the number of sharp corners 21b of the constriction 21. As shown in FIG. 2, the four first outlets 11 are respectively disposed corresponding to the cusps 21b of the convergent section 21, so that the injected gas can directly act on the inner wall surfaces on both sides of the cusp 21b, and the relative balance of the gas flow velocities among the cusps 21b of the convergent section 21 can be maintained.

In addition, the specific shape of the gas outlet of the first outlet 11 may be the same as the shape of the corresponding sharp corner 21b of the constricted section 21. As shown in fig. 2, the outlet shape of the first outlet 11 is a "chevron" shape, so that the flow of air ejected from the first outlet 11 matches the shape of the sharp corner 21b of the constriction 21, thereby further increasing the flow velocity of the air on the inner wall surface. Of course, the outlet shape of the first outlet 11 of the present embodiment is only for illustrative purposes, and in other embodiments, similar outlet shape designs can achieve the above technical effects, for example, the outlet shape is a "V" shape.

In addition, the cross-sectional shapes of the inner cavities of the horizontal section 22 and the expansion section 23 of the ejector tube 2 are the same as the cross-sectional shape of the inner cavity of the contraction section 21, so that the airflow can smoothly flow.

As shown in fig. 2 and 3, the nozzle 1 further includes a second outlet 12, the second outlet 12 is disposed at a middle position of the nozzle 1, surrounded by the plurality of first outlets 11, and disposed toward a central position of the contraction section 21, and the second outlet 12 of the nozzle 1 is configured to supply air to the middle position of the ejector pipe 2, so as to increase an overall flow rate of the air flow in the ejector pipe 2. In the present embodiment, the outlet shape of the second outlet 12 is similar to the outlet shape of the first outlet 11, and is in a shape of a "figure eight" circumferentially arrayed four times around the center position (see fig. 2 in particular). In addition, the nozzle 1 further comprises an air inlet section 13 and a buffer chamber 14, the air inlet section 13, the buffer chamber 14 and the first outlet 11 (or the second outlet 12) are sequentially arranged along the airflow direction a and are communicated with each other, and the inlet cross-sectional area of the air inlet section 13 is smaller than the cross-sectional area of the buffer chamber 14. In the present embodiment, the cross-sectional shape of the inner cavity of the buffer chamber 14 is the same as the cross-sectional shape of the inner cavity of the constricted section 21, so that the shape of the buffer chamber 14 can be matched to the positional layout of the first outlet 11.

Still fix each other through adapting unit between nozzle 1 and the injection pipe 2, specifically, this adapting unit is including being fixed in nozzle 1 and the flange 31 of injecting the pipe 2 surface respectively to realize the fixed of relative position through the bolt.

Example 2

The embodiment provides a cooker ejector, and the structure of the cooker ejector is substantially the same as that provided in embodiment 1. The difference is that in the present embodiment, the injection pipe 2 only includes the contraction section 21 and the horizontal section 22, and does not include the expansion section 23. As shown in fig. 4, the end of the horizontal section 22 along the airflow direction a is closed, and a plurality of openings are formed on the side wall surface of the horizontal section 22, so that the mixed gas in the injection pipe 2 is communicated with the external stove fire cover. Wherein the openings are circumferentially arranged on the side wall surface of the horizontal section 22 along the inner cavity section of the horizontal section 22.

Since the horizontal segment 22 in this embodiment is also in a polygonal structure, the apertures of the openings and the linear distances of the openings from the center of the horizontal segment 22 have a corresponding relationship: when the opening is relatively close to the center of the horizontal section 22, the aperture of the opening is large; and when the opening is relatively distant from the center position of the horizontal section 22, the aperture of the opening is small. The arrangement of the opening size can enable the mixed gas in the horizontal section 22 to uniformly flow out from the side wall surface of the horizontal section 22, and the condition that the gas flowing out around the horizontal section 22 is unbalanced due to the non-circular cross section of the inner cavity of the horizontal section 22 can not occur.

Specifically, in the present embodiment, the cross-sectional shape of the inner cavity of the horizontal section 22 is a quadrangle star, so the openings of the gas channel on the horizontal section 22 are also divided into three types of openings, namely, the first opening 41, the second opening 42 and the third opening 43. Wherein the first opening 41 is disposed at the sharp corner 22b of the horizontal segment 22, and the aperture is relatively minimum since it is farthest from the center position of the horizontal segment 22; the second opening 42 is disposed on the side wall surface of the horizontal section 22, and the aperture thereof is between the first opening 41 and the third opening 43; and the third opening 43 is positioned at an obtuse angle to the horizontal section 22 so that its aperture is maximized.

Through the structure, under the condition that the cross section of the inner cavity of the horizontal section 22 is non-circular, the gas outflow speed of each position of the horizontal section 22 can be balanced, and the uniform outflow of the mixed gas of gas and air can be better ensured.

In addition, in the present embodiment, two sets of openings are disposed on the side wall surface of the horizontal section 22, and the two sets of openings are sequentially arranged along the airflow direction a.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A cooking utensils ejector, its characterized in that, it includes:

the injection pipe is provided with a contraction section, and the cross section of the inner cavity of the contraction section is in a polygonal star shape;

the nozzle and the injection pipe are sequentially arranged along the airflow direction, the nozzle comprises a plurality of first outlets, the first outlets are all arranged towards the inlet direction of the contraction section, the plurality of first outlets are sequentially and circumferentially arranged along the edge of the inner cavity of the contraction section, the number of the first outlets is the same as that of sharp corners of the cross section shape of the inner cavity of the contraction section, and the plurality of first outlets are respectively arranged corresponding to the sharp corners of the inner wall of the contraction section;

the outlet of the first outlet is in a splayed shape, so that the air flow sprayed out of the first outlet is matched with the sharp angle shape of the contraction section.

2. The cooking range injector of claim 1, wherein the injector tube further comprises a horizontal section, and the cross-sectional shape of the inner cavity of the horizontal section is the same as the cross-sectional shape of the inner cavity of the convergent section.

3. The cooker ejector of claim 2, wherein the ejector tube is provided with a gas channel for communicating with a cooker fire cover, and an opening of the gas channel on the ejector tube is positioned on the side wall surface of the horizontal section.

4. The cooking range injector of claim 3, wherein the openings are circumferentially disposed on a sidewall surface of the horizontal section along a cross section of an inner cavity of the horizontal section, and apertures of the plurality of openings gradually increase as a distance from the openings to a center of the horizontal section approaches.

5. The cooking range injector of claim 1, wherein an outlet shape of the first outlet is the same as a corresponding sharp corner shape of the inner wall.

6. The cooking range injector of claim 1, wherein the nozzle further comprises an air inlet section and a buffer chamber, the air inlet section, the buffer chamber and the first outlet are sequentially arranged along an air flow direction and are communicated with each other, and the cross-sectional shape of an inner cavity of the buffer chamber is the same as that of an inner cavity of the contraction section.

7. The cooktop injector of claim 1, wherein the nozzle further comprises a second outlet disposed toward a center of the converging section.