CN216114021U

CN216114021U - Ejector for preheating air and stove combustion assembly

Info

Publication number: CN216114021U
Application number: CN202121505774.1U
Authority: CN
Inventors: 卢宇聪; 董启铭; 黎有为; 陈启荣
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-03-22
Anticipated expiration: 2031-07-01

Abstract

The utility model provides an ejector for preheating air, which comprises an ejection pipeline, wherein the ejection pipeline comprises an air inlet, a throat pipe, a mixing pipe and a diffuser pipe which are sequentially connected, a fan blade assembly for introducing air is arranged at the air inlet, a heating assembly for preheating air is arranged on one side, close to the throat pipe, of the fan blade assembly, and through holes for allowing a gas nozzle to conveniently penetrate through are formed in the fan blade assembly and the heating assembly. The utility model also provides a stove combustion assembly. The utility model preheats the air in advance, improves the initial temperature of the mixed gas formed by the air and the fuel gas, optimizes the combustion performance and improves the combustion efficiency.

Description

Ejector for preheating air and stove combustion assembly

Technical Field

The utility model relates to the technical field of cookers, in particular to an ejector for preheating air and a cooker combustion assembly.

Background

Present traditional cooking utensils burning draws and penetrates the mode and for producing the negative pressure zone through the high-speed injection of gas, drive surrounding air and get into the combustor inner chamber, chinese patent publication No. CN112240547A, published date 2021 year 1 month 19 days, this patent discloses a cooking utensils ejector, and it includes the nozzle that sets gradually along the air current direction and draws and penetrate the pipe, draws the pipe subassembly and still includes induced air mechanism, and induced air mechanism sets up in drawing and penetrates intraductally, and induced air mechanism includes: the 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 the outer loop, and the blade is the fretwork with the intersection of nozzle spun gas to form the gas passageway that supplies the gas to pass through. However, before combustion, the temperature of the air injected into the combustor is the temperature of the ambient environment at normal temperature, and at the moment, the temperature of the mixture of the fuel gas and the air is lower, so that part of heat is taken away to heat the mixture in the combustion, part of the heat is dissipated, and the combustion efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the combustion efficiency of a cooker is low due to the fact that the temperature of mixed air and fuel gas in the existing ejector is low, and provides an ejector for preheating air and a cooker combustion assembly. The utility model can improve the initial temperature of the mixture of air and fuel gas, optimize the combustion performance and improve the combustion efficiency.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides an ejector to air preheating, includes draws and penetrates the pipeline, draw and penetrate the pipeline including air intake, choke, mixing tube and the diffuser pipe that connects gradually, air intake department is equipped with the fan blade subassembly of introducing the air, the fan blade subassembly is close to one side of choke is equipped with the heating element to air preheating, fan blade subassembly and heating element all are equipped with the through-hole that the gas nozzle of being convenient for passed.

In one embodiment, the fan blade assembly comprises a rotor shaft and a stator shaft, the rotor shaft is arranged inside the stator shaft, the stator shaft and the rotor shaft are movably connected through balls, blades are arranged on the rotor shaft, and the through holes are formed in the rotor shaft.

In one embodiment, the outer wall of the rotor shaft is provided with a spherical groove for placing the ball, and the inner wall of the stator shaft is provided with a groove rail for limiting the movement of the ball.

In one embodiment, the heating assembly comprises an outer ring, a fixing frame and a heating wire, the fixing frame is arranged in the outer ring, a plurality of wire passing holes are formed in the fixing frame, the heating wire penetrates through the wire passing holes and is wound on the fixing frame, and the through hole is formed in the fixing frame.

In one embodiment, the middle of the fixing frame is a circular ring, a plurality of supporting bars are uniformly distributed on the outer wall of the circular ring, the wire passing holes are formed in the supporting bars, and the through holes are formed in the middle of the circular ring.

In one embodiment, the inner wall of the outer ring is provided with a clamping groove for clamping the supporting bar.

In one embodiment, the injection pipeline fixing device comprises two injection pipelines which are arranged in parallel, and further comprises a fixing block, wherein two mounting holes for fixing the injection pipelines are formed in the fixing block. In this technical scheme, two injection pipelines that place side by side insert respectively in the combustor, and one leads to the outer loop of combustor, and another leads to the inner loop of combustor.

In one embodiment, the fixing block is provided with a wire passing groove communicated with the mounting hole. The power supply line of the heating assembly penetrates through the wire passing groove.

The ejector for preheating the air has the technical effects that: the high-flow-rate gas is sprayed out of the gas nozzle and enters the throat pipe, the high-flow-rate gas changes the pressure inside the throat pipe, the fan blade assembly automatically rotates under the influence of pressure difference to bring air outside the air inlet into the injection pipeline, the heating assembly heats the air, the heated air is initially contacted with the gas at the throat pipe, and the gas is fully mixed in the mixing pipe and then enters the diffuser pipe. After the heated air is mixed with the fuel gas, the initial temperature of the whole mixed gas is improved. After the initial temperature of the mixed gas is increased, the combustion reaction rate and the flame propagation speed are increased, and the flame propagation speed, the success rate and the combustion efficiency of the later-stage combustor are improved.

The utility model also provides a stove combustion assembly which comprises the ejector, a gas valve body and a combustor, wherein a gas nozzle of the gas valve body extends into the throat pipe from the through hole, and the diffuser pipe extends into a mixing cavity of the combustor.

In one embodiment, the outer wall of the diffuser pipe is provided with a connecting piece connected with the combustor.

The heating assembly arranged at the air inlet heats the air entering the air inlet, so that the initial temperature of the mixture of the air and the fuel gas is increased, the combustion performance is optimized, and the combustion efficiency is improved; as long as high-speed gas flows through the gas nozzle, the fan blade assembly can rotate actively to screw air in, so that the air and the gas are fully mixed in the mixing pipe, the mixing effect in the injection pipe is improved, and the combustion efficiency of the gas stove is improved; the fan blade assembly is driven by the internal and external pressure difference to actively screw external air into the throat pipe, and a driving device is not required to be additionally arranged, so that the energy-saving and environment-friendly effects are achieved.

Drawings

FIG. 1 is a schematic structural view of an eductor for preheating air in accordance with the present invention;

FIG. 2 is a schematic structural view of a fan blade assembly in an ejector for preheating air according to the present invention;

FIG. 3 is a schematic view of an internal structure of a fan blade assembly in an ejector for preheating air according to the present invention;

FIG. 4 is a schematic diagram of a heater assembly in an eductor for preheating air in accordance with the present invention;

FIG. 5 is an exploded view of a heating assembly in an eductor for preheating air in accordance with the present invention;

FIG. 6 is a schematic structural diagram of a fixing block in an injector for preheating air according to the present invention;

FIG. 7 is a schematic structural view of a burner assembly of a cooking appliance of the present invention.

The graphic symbols are illustrated as follows:

1. an injection pipeline; 101. a throat; 102. a mixing tube; 103. a diffuser pipe; 2. an air inlet; 3. a fan blade assembly; 310. a rotor shaft; 311. a spherical recess; 320. a ball bearing; 330. a stator shaft; 331. a groove track; 340. a blade; 4. a heating assembly; 410. an outer ring; 411. a card slot; 420. a heater; 430. a fixed mount; 431. a wire passing hole; 432. a supporting strip; 5. a fixed block; 501. mounting holes; 502. a wire passing groove; 6. a connecting member; 7. a burner; 701. a mixing chamber; 8. a gas valve body; 801. and a gas nozzle.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Examples

An embodiment of an eductor for preheating air. The utility model provides an ejector that preheats air, includes the injection pipeline 1 of being connected with combustor 7, and injection pipeline 1 is including air intake 2, choke 101, mixing tube 102 and the diffuser pipe 103 that connect gradually, and air intake 2 department is equipped with fan blade subassembly 3, and one side that fan blade subassembly 3 is close to choke 101 is equipped with heating element 4, and the centre of fan blade subassembly 3 and heating element 4 all is equipped with the through-hole that is convenient for gas nozzle 801 to pass. The gas nozzle 801 extends into the throat 101 of the injection pipeline 1 from the through hole, the gas nozzle 801 sprays high-flow-rate gas, so that the pressure of the throat 101 is smaller than the pressure outside the air inlet 2, the fan blade assembly 3 automatically rotates to screw in the air outside the air inlet 2, the heating assembly 4 heats the screwed air, and the heated air is mixed with the gas in the mixing pipe 102 to form mixed gas. The heated air raises the initial temperature of the mixed gas, and the flame transfer speed, the success rate and the combustion efficiency of the later-stage combustor 7 are improved.

In one embodiment, the fan blade assembly 3 includes a rotor shaft 310 and a stator shaft 330, the rotor shaft 310 is disposed inside the stator shaft 330, the stator shaft 330 and the rotor shaft 310 are movably connected through balls 320, the rotor shaft 310 is provided with blades 340, and a through hole is disposed on the rotor shaft 310. The pressure in the throat 101 is changed by the high-flow gas, the rotor shaft 310 drives the blades 340 to rotate in the stator shaft 330, and the rotation of the blades 340 brings the external air into the injection pipeline 1.

In one embodiment, the outer wall of the rotor shaft 310 is provided with a spherical groove 311 for placing the ball 320, the inner wall of the stator shaft 330 is provided with a concave track 331, and the ball 320 on the outer wall of the rotor shaft 310 moves on the concave track 331 on the inner wall of the stator shaft 330 during the rotation process of the rotor shaft 310. In this embodiment, as long as the gas in the gas nozzle 801 enters the injection pipeline 1, the blade 340 of the fan blade assembly 3 can rotate along with the rotor shaft 310 under the driving of the pressure difference, the air outside the air inlet 2 is screwed into the throat 101, the balls 320 are limited to move on the concave rail 331, and the rotor shaft 310 is matched to rotate in the stator shaft 330. The fan blade assembly 3 can be matched with fuel gas to complete automatic rotation without an additional driving device.

In one embodiment, the heating assembly 4 includes an outer ring 410, a mount 430, and a heater 420. The heating wire 420 is wound on the fixing frame 430, the fixing frame 430 is clamped in the outer ring 410, and the outer ring 410 is fixed in the mounting hole 501. The heating wire 420 is wound and shaped on the fixing frame 430, the fixing frame 430 is fixed at the air inlet 2 by the outer ring 410, and the fixing block 5 is provided with the wire passing groove 502 for a power supply wire of the heating wire 420 to penetrate through.

In one embodiment, as shown in fig. 5, the fixing frame 430 is a circular ring, six supporting bars 432 are uniformly arranged outside the circular ring, each supporting bar 432 is provided with a plurality of wire passing holes 431, and the heating wire 420 sequentially passes through the wire passing holes 431 of the six supporting bars 432 and is uniformly wound on the supporting bars 432. The heating wire 420 is connected with the power supply line and then uniformly heats the fixing frame 430, and meanwhile, the air passing through the heating wire 420 is prevented from being influenced by resistance. The inner wall of the outer ring 410 is provided with a clamping groove 411 for clamping the supporting bar 432.

In one embodiment, the injection device comprises two injection pipelines 1 which are arranged in parallel, and the two injection pipelines 1 are fixed by a fixing block 5. The fixed block 5 is provided with two mounting holes 501, the air inlets 2 of the two injection pipelines 1 are respectively clamped in the two mounting holes 501, and the fan blade assembly 3 and the heating assembly 4 which are correspondingly arranged on each injection pipeline 1 are arranged at the mounting holes 501. Two parallel injection pipelines 1 are respectively connected into the combustor 7, one is communicated with the outer ring of the combustor 7, and the other is communicated with the inner ring of the combustor 7.

In one embodiment, the fixing block 5 is provided with a wire passing groove 502 communicated with the mounting hole 501. The supply wires of the heating assembly pass through the wire passing slots 502.

An embodiment of an eductor for preheating air. The ejector capable of preheating air comprises the ejector, a fuel gas valve body 8 and a combustor 7, wherein a fuel gas nozzle 801 of the fuel gas valve body 8 extends into a throat 101 from a through hole, and a diffuser pipe 103 extends into a mixing cavity 701 of the combustor 7. Two parallel injection pipes 1 are respectively connected into the mixing cavity 701 of the burner 7, one is communicated with the outer ring of the burner 7, and the other is communicated with the inner ring of the burner 7.

In one embodiment, the diffuser pipe 103 is provided on its outer wall with a connection 6 abutting the burner 7.

The gas nozzle 801 of the gas valve body 8 inputs high-flow-rate gas into the throat 101, the pressure at the throat 101 is smaller than the external pressure, the air outside the air inlet 2 enters the throat 101 through the fan blade assembly 3 under the pressure difference, the heating assembly 4 heats the air, and the mixing temperature of the air and the gas in the mixing pipe 102 is increased. After the initial temperature of the mixed gas entering the combustor 7 is raised, the combustion reaction rate and the combustion flame propagation of the mixed gas on the combustor 7 are accelerated, and the combustion efficiency is improved.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an ejector to air preheating, includes and draws and penetrate pipeline (1), draw and penetrate pipeline (1) including air intake (2), choke (101), hybrid tube (102) and diffuser pipe (103) that connect gradually, its characterized in that: the air inlet (2) is provided with a fan blade assembly (3) for introducing air, one side of the fan blade assembly (3) close to the throat pipe (101) is provided with a heating assembly (4) for preheating the air, and the fan blade assembly (3) and the heating assembly (4) are provided with through holes for the gas nozzle (801) to pass through.

2. An eductor for preheating air as defined in claim 1 wherein: the fan blade assembly (3) comprises a rotor shaft (310) and a stator shaft (330), the rotor shaft (310) is arranged inside the stator shaft (330), the stator shaft (330) is movably connected with the rotor shaft (310) through balls (320), blades (340) are arranged on the rotor shaft (310), and the through holes are formed in the rotor shaft (310).

3. An eductor for preheating air as claimed in claim 2 wherein: the outer wall of the rotor shaft (310) is provided with a spherical groove (311) for placing the ball (320), and the inner wall of the stator shaft (330) is provided with a concave rail (331) for limiting the movement of the ball (320).

4. An eductor for preheating air as defined in claim 1 wherein: the heating assembly (4) comprises an outer ring (410), a fixing frame (430) and a heating wire (420), wherein the fixing frame (430) is arranged in the outer ring (410), a plurality of wire passing holes (431) are formed in the fixing frame (430), the heating wire (420) penetrates through the wire passing holes (431) to be wound on the fixing frame (430), and the through hole is formed in the fixing frame (430).

5. An eductor for preheating air as defined in claim 4 wherein: the middle of mount (430) is the ring, evenly distributed a plurality of support bar (432) on the outer wall of ring, cross line hole (431) and set up on support bar (432), be in the middle of the ring the through-hole.

6. An eductor for preheating air as defined in claim 5 wherein: and a clamping groove (411) for clamping the support bar (432) is arranged on the inner wall of the outer ring (410).

7. An eductor for preheating air as defined in claim 1 wherein: the injection pipeline comprises two injection pipelines (1) which are arranged in parallel and further comprises a fixed block (5), wherein two mounting holes (501) for fixing the injection pipelines (1) are formed in the fixed block (5).

8. An eductor for preheating air as claimed in claim 7 wherein: and the fixed block (5) is provided with a wire passing groove (502) communicated with the mounting hole (501).

9. A cooking utensils combustion component which characterized in that: the ejector for preheating the air according to any one of claims 1 to 8, further comprising a gas valve body (8) and a burner (7), wherein a gas nozzle (801) of the gas valve body (8) extends into the throat (101) from the through hole, and the diffuser pipe (103) extends into a mixing cavity (701) of the burner (7).

10. The cooktop combustion assembly of claim 9, wherein: and a connecting piece (6) which is abutted against the combustor (7) is arranged on the outer wall of the diffuser pipe (103).