CN112240547B

CN112240547B - Kitchen range ejector

Info

Publication number: CN112240547B
Application number: CN201910638759.5A
Authority: CN
Inventors: 李林; 俞瑜; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2022-10-11
Anticipated expiration: 2039-07-16
Also published as: CN112240547A

Abstract

The invention discloses a cooker ejector, which comprises a nozzle and an ejector pipe which are sequentially arranged along the airflow direction, wherein the ejector pipe assembly further comprises an air inducing mechanism, the air inducing mechanism is arranged in the ejector pipe, and the air inducing mechanism comprises: the fixed outer ring is arranged on the surface of the inner wall of the injection pipe and can rotate by taking the axis of the injection pipe as a center; the blade, the blade is fixed in fixed outer loop, and the blade is the fretwork at the intersection with nozzle spun gas to form the gas passageway that supplies the gas to pass through. This cooking utensils ejector sets up the blade through drawing in penetrating the pipe, utilizes the rotation of blade to produce the negative pressure to improve the inspiratory capacity of air, and then improve and draw the pipe and draw the ability of penetrating the air, realize more abundant premixing and prevent the backward flow. Wherein, because the gas channel that dodges the nozzle blowout gas is equipped with on this blade, can avoid the blade to block the normal flow of gas, make and draw the ejector pipe and draw when utilizing the gas to draw the air, utilize this induced draft mechanism to improve the inspiratory capacity of air.

Description

Kitchen range ejector

Technical Field

The invention relates to the field of burners, in particular to a cooker ejector.

Background

The cooker ejector is one of the important components of a burner, which ejects the air in the surrounding environment through the flow of fuel gas. The stove injector usually includes a nozzle and an injection pipe, wherein the injection pipe can be divided into a contraction section, a horizontal section and an expansion section according to the change of the cross section along the gas flow direction, the nozzle is arranged at the upstream position of the contraction section, and the outlet of the nozzle is aligned with the inlet of the contraction section so as to inject the fuel gas into the injection pipe.

Wherein, the gas is spouting and is drawing the penetrating pipe after, draws penetrating pipe to utilize the flow of gas to draw penetrating pipe entry air ejection ability all around to be the main index of the penetrating pipe performance of evaluation, draws penetrating pipe to the ejection ability of air for improving, exists a scheme among the prior art: an additional air blower is arranged outside the cooker ejector to blow air to the inlet of the ejector pipe, and external equipment is used for increasing the air pressure outside the ejector pipe so that more air can enter the ejector pipe. However, the operation of the blower needs to consume electric power, the common gas cooker generally does not need to be plugged, and the structure is complicated by adding the blower into the cooker system. Moreover, the blowing amount is not easy to control, which increases the difficulty and cost of technical development. In addition, when the combustor works, the space of the chassis is narrow and small, the temperature is high, active pressurizing equipment such as a blower is arranged, and potential safety hazards such as electric leakage exist.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a cooker ejector.

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

the utility model provides a cooking utensils ejector, its includes the nozzle and the ejector pipe that set gradually along the air current direction, the ejector pipe subassembly still includes induced air mechanism, induced air mechanism set up in the ejector pipe, induced air mechanism includes:

the fixed outer ring is arranged on the surface of the inner wall of the injection pipe and can rotate by taking the axis of the injection pipe as a center;

the blades are fixed on the fixed outer ring, and the intersection of the blades and the gas sprayed out from the nozzle is hollowed out to form a gas channel for the gas to pass through.

According to the cooker ejector, the blades are arranged in the ejector pipe, negative pressure is generated by rotation of the blades, so that the air suction amount is increased, the air ejecting capacity of the ejector pipe is further improved, the ejected air forms a rotational flow, and the purposes of fully premixing and backflow prevention are achieved. The gas channel for avoiding the gas sprayed by the nozzle is arranged on the blade, so that the normal flow of the gas can be prevented from being blocked by the blade while the air injection capability is improved, and the air suction amount of the air is improved by the air inducing mechanism while the air is injected by the gas through the injection pipe.

Preferably, the nozzle is towards draw the intermediate position setting of penetrating the pipe, the gas passageway is located the intermediate position of blade to the spout that corresponds to the nozzle sets up the direction, and when the blade was rotatory, the gas passageway of its fretwork also kept being located the intermediate position that penetrates the pipe always, so that the gas that supplies the nozzle spun passes through fast, avoids producing the hindrance to the velocity of flow of gas.

Preferably, the air inducing mechanism further includes a fixed inner ring, the fixed inner ring and the fixed outer ring are concentrically arranged, the blades are located between the fixed inner ring and the fixed outer ring and are respectively fixed to the fixed inner ring and the fixed outer ring, and the fixed inner ring surrounds the gas channel.

Through setting up fixed inner ring in the inboard of blade, make the multi-disc blade keep away from one side of fixed outer loop also can interconnect, guarantee the structural strength of blade, utilize fixed inner ring to inject the space of gas channel simultaneously to the normal flow production of blade to the gas hinders.

Preferably, the surface of the fixed inner ring is provided with an air inducing hole, the air inducing hole penetrates through the fixed inner ring, and the air inducing hole is communicated with the gas channel and the area where the blades are located.

When the fuel gas flows through the fuel gas channel at a high speed, the fuel gas enters the area where the blades are located through the air guide holes, and the blades are driven to rotate by the flowing of the fuel gas through the introduction of the fuel gas flowing at the high speed, so that the air can be sucked into the air guide mechanism better.

Preferably, the air inducing holes are arranged between two adjacent blades, so that the gas can conveniently enter the area between the blades from the air inducing holes.

Preferably, the plurality of air inducing holes are sequentially arranged along the axial direction of the ejector pipe, so that the normal flow of the fuel gas is prevented from being influenced by turbulence generated in the area of the fuel gas channel around the air inducing hole due to the overlarge size of the single air inducing hole while the gas quantity of the fuel gas entering the area of the blade from the air inducing hole is ensured.

Preferably, the inner wall surface of the injection pipe is provided with an annular groove, the surface of the fixed outer ring is provided with a protruding part matched with the annular groove in shape, and the protruding part is embedded in the annular groove so that the fixed outer ring rotates around the axis of the injection pipe.

Preferably, the protruding portion is located on one side of the fixed outer ring, which is far away from the inlet of the injection pipe.

Preferably, the cross-sectional shape of the annular groove is arc-shaped, so that the annular groove and the protrusion are in a curved surface contact state, and the resistance of the protrusion to rotating and sliding in the annular groove is reduced.

Preferably, the ejector tube is provided with a contraction section, a horizontal section and an expansion section in sequence along the airflow direction, and the air inducing mechanism is arranged at the opening position of the contraction section so as to improve the suction volume of the air inducing mechanism to the outside air.

The positive progress effects of the invention are as follows:

this cooking utensils ejector sets up the blade in drawing the penetrating pipe, utilizes the rotation of blade to produce the negative pressure to improve the inspiratory capacity of air, and then improve and draw the penetrating pipe and draw the ability of penetrating the air, and make the air that draws form a whirl, realize more abundant premixing and prevent the backward flow. Wherein, owing to have the gas passageway of dodging nozzle blowout gas on this blade, can avoid the blade to block the normal flow of gas when improving and draw the air capacity of penetrating, make and draw the ejector pipe and draw when utilizing the gas to draw and penetrate the air, utilize this induced draft mechanism to improve the inspiratory capacity of air.

Drawings

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

Fig. 2 is a schematic perspective view of an air inducing mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic front view of an air inducing mechanism according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an exploded state of a cooker ejector according to an embodiment of the present invention.

Fig. 5 is a schematic view of a partial internal structure of a cooker ejector according to an embodiment of the present invention.

Description of reference numerals:

an injection pipe 2 with an annular groove 2a

Constriction section 21

Horizontal segment 22

Expansion segment 23

Air inducing mechanism 3, gas channel 3a

Fixing the outer ring 31, the projection 311

Blade 32

Fixed inner ring 33, air-inducing hole 331

Detailed Description

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

As shown in fig. 1 and fig. 2, the present invention provides a range injector, which comprises a nozzle (not shown in the figures) and an injection pipe 2, which are sequentially arranged along the flowing direction of the fuel gas, wherein the nozzle orifice of the nozzle is arranged towards the inlet direction of the injection pipe 2, and the fuel gas is injected into the injection pipe 2 to generate an injection flow. This draw and penetrate 2 subassemblies and still include induced air mechanism 3, induced air mechanism 3 is including fixed outer loop 31 and blade 32, wherein, fixed outer loop 31 sets up the inner wall surface of penetrating pipe 2, and can regard as the center rotation with the axis of penetrating pipe 2, and blade 32 is then fixed on fixed outer loop 31, flow and draw when penetrating air all around to penetrate the inside flow of pipe at the gas, these air can drive blade 32 and draw and penetrate 2 rotations of pipe relatively, with the negative pressure that produces in the improvement penetrates the pipe, and then promote and penetrate the ability of penetrating of pipe 2. This blade 32 is the fretwork state at the intersection with nozzle spun gas to form the gas passageway 3a that makes the gas can pass through fast, avoid blade 32 to cause the hindrance to the fast flow of gas.

According to the cooker ejector, the blades 32 are arranged in the ejector pipe 2, negative pressure is generated by rotation of the blades 32, so that the air suction amount is increased, the air ejection capacity of the ejector pipe 2 is improved, the ejected air forms a rotational flow, and sufficient premixing and backflow prevention are realized. Wherein, because the gas channel 3a of dodging the nozzle blowout gas is equipped with on this blade 32, can improve and draw the air ability of penetrating, avoid blade 32 to block the normal flow of gas, make and draw ejector pipe 2 when utilizing gas to draw and penetrate the air, utilize this induced draft mechanism 3 to improve the inspiratory capacity of air.

As shown in fig. 1, in the present embodiment, the ejector tube 2 sequentially includes a contraction section 21, a horizontal section 22 and an expansion section 23 along the flowing direction of the fuel gas, wherein the air inducing mechanism 3 is disposed at the opening position of the contraction section 21 to facilitate the suction of the external air.

In this embodiment, the nozzle of the nozzle is disposed toward the center of the ejector tube 2, and correspondingly, the gas channel 3a of the air inducing mechanism 3 is also located at the middle position of the vane 32 to correspond to the nozzle disposing direction, and when the vane 32 rotates, the hollow gas channel 3a is always kept at the middle position of the ejector tube 2 for the gas ejected from the nozzle to pass through quickly, thereby avoiding blocking the flow rate of the gas.

As shown in fig. 2 and fig. 3, the air inducing mechanism 3 further includes a fixed inner ring 33, the fixed inner ring 33 and the fixed outer ring 31 are concentrically arranged, the blades 32 are arranged between the fixed inner ring 33 and the fixed outer ring 31, two ends of the blades are respectively fixed to the fixed inner ring 33 and the fixed outer ring 31, and the gas passage 3a is arranged on the fixed inner ring 33 so as to allow the gas to pass through the region enclosed by the middle of the fixed inner ring 33.

By arranging the fixed inner ring 33 on the inner side of the blades 32, one sides of the blades 32 far away from the fixed outer ring 31 can be connected with each other, the structural strength of the blades 32 is ensured, and meanwhile, the fixed inner ring 33 is utilized to limit the space of the gas channel 3a, so that the blades 32 are prevented from blocking the normal flow of the gas.

In addition, an air inducing hole 331 is further provided on the surface of the fixed inner ring 33, and the air inducing hole 331 penetrates the fixed inner ring 33 to communicate the gas passage 3a and the region where the vane 32 is located, so that the gas flowing at a high speed can be introduced from the region of the gas passage 3a into the region where the vane 32 is located.

As shown in the partially enlarged portion of fig. 1, when the gas 1a flows through the gas passage 3a at a high speed, it enters the area where the vane 32 is located through the air inducing hole 331 to rotate the vane 32 by the gas flowing at a high speed. If the air inducing hole 331 is not provided, the gas can only indirectly drive the blade 32 to rotate by injecting the air through the air flow; after the air inducing holes 331 are provided, the gas sprayed from the nozzles can directly drive the blades 32 to rotate, and the air suction capacity of the air inducing mechanism 3 can be improved.

Therefore, for the injection pipe 2 provided with the air inducing mechanism 3, the gas sprayed out from the nozzle can not only suck air by using the negative pressure generated by the injection pipe 2, but also suck air by driving the blades 32 to rotate, and the two air suction modes do not interfere with each other, so that the injection capacity of the cooker injector is improved.

As shown in fig. 3, the air inducing hole 331 is provided between two adjacent blades 32 to facilitate the gas from the air inducing hole 331 to enter the area between the blades 32. In the air inducing holes 331 between the two blades 32, the hole size of the single air inducing hole 331 should not be too large to avoid the generation of turbulence in the area of the gas channel 3a around the air inducing hole 331, which affects the normal flow of the gas. On this basis, in order to increase the amount of the gas entering the region where the blade 32 is located from the air inducing hole 331, a plurality of air inducing holes 331 having a small size may be sequentially arranged along the axial direction of the injection pipe 2.

As shown in fig. 4 and 5, an annular groove 2a is formed in the inner wall surface of the injection pipe 2 at a position where the air inducing mechanism 3 is disposed, and correspondingly, a protruding portion 311 adapted to the shape of the annular groove 2a is formed on the surface of the fixed outer ring 31, when the air inducing mechanism 3 is disposed in the injection pipe 2, the protruding portion 311 is embedded in the annular groove 2a, and the surfaces of the protruding portion 311 and the annular groove 2a are both polished surfaces, so that the protruding portion 311 can slide in the annular groove 2a and rotate around the axis of the injection pipe 2, thereby achieving rotation of the blade 32. This structure provides a comparatively simple implementation scheme, makes the fixed outer loop 31 of induced draft mechanism 3 can be fixed in and draws the internal face of penetrating pipe 2, draws the axis circumferential direction of penetrating pipe 2 relatively simultaneously. The cross-sectional shape of the annular groove 2a is arc-shaped so that the annular groove 2a and the projection 311 are in a curved surface contact state to reduce resistance to rotational sliding of the projection 311 in the annular groove 2 a.

As shown in fig. 4, when the air inducing mechanism 3 needs to be installed on the ejector tube 2, the air inducing mechanism 3 is only required to be installed into the ejector tube 2 from the inlet of the ejector tube 2 along the gas flowing direction of the ejector tube 2, so that the protrusion 311 is clamped on the annular groove 2 a. In contrast, when the air inducing mechanism 3 is to be detached from the ejector tube 2, the engagement relationship between the protrusion 311 and the annular groove 2a is only required to be overcome. Therefore, the induced draft mechanism 3 can be quickly replaced as required.

In the present embodiment, the projections 311 are not provided at intervals on the surface of the fixed outer ring 31, but are provided continuously (see fig. 2). And, a projection 311 is provided on the side of the fixed outer ring 31 away from the inlet of the ejector pipe 2,

in addition, in the present embodiment, as shown in fig. 5, the protrusion 311 is embodied as a metal ring, which has a circular cross section and matches the size of the annular groove 2 a. This metal ring welding is in the one end of fixed outer loop 31 to establish in annular groove 2a through inlaying, make whole induced draft mechanism 3 can draw the lateral wall rotation of penetrating pipe 2 relatively. The structure is simple to process, and the purpose that the fixed outer ring 31 rotates relative to the inner wall of the injection pipe 2 can be effectively realized.

While specific embodiments of the invention have been described above, it will be understood 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. The utility model provides a cooking utensils ejector, its includes the nozzle that sets gradually along the air current direction and draws and penetrate the pipe, its characterized in that, draw and penetrate the pipe subassembly and still include induced air mechanism, induced air mechanism set up in draw and penetrate intraductally, induced air mechanism includes:

the blades are fixed on the fixed outer ring, and the intersection of the blades and the fuel gas sprayed out from the nozzle is hollowed out to form a fuel gas channel for the fuel gas to pass through;

the induced air mechanism further comprises a fixed inner ring, the fixed inner ring and the fixed outer ring are arranged concentrically, the blades are located between the fixed inner ring and the fixed outer ring and are respectively fixed on the fixed inner ring and the fixed outer ring, the fixed inner ring surrounds the gas channel, induced air holes are formed in the surface of the fixed inner ring and are arranged between every two adjacent blades, the induced air holes penetrate through the fixed inner ring, and the induced air holes are communicated with the gas channel and the area where the blades are located.

2. The cooking range injector of claim 1, wherein the nozzle is disposed toward a middle position of the injector tube, and the gas passage is located at a middle position of the vane.

3. The cooktop injector of claim 1, wherein the air-inducing aperture is disposed between two adjacent vanes.

4. The cooking range injector of claim 3, wherein a plurality of the air induction holes are arranged in sequence along an axial direction of the injector pipe.

5. The cooker ejector of claim 1, wherein the inner wall surface of the ejector pipe is provided with an annular groove, the surface of the fixed outer ring is provided with a protruding part matched with the annular groove in shape, and the protruding part is embedded in the annular groove so that the fixed outer ring rotates around the axis of the ejector pipe.

6. The cooktop injector of claim 5, wherein the protrusion is located on a side of the stationary outer ring away from the inlet of the injector tube.

7. The cooking range injector of claim 5, wherein the annular groove is arcuate in cross-sectional shape.

8. The cooking range injector of any one of claims 1 to 7, wherein the injector tube is provided with a contraction section, a horizontal section and an expansion section in sequence along an airflow direction, and the air inducing mechanism is arranged at an opening position of the contraction section.