CN112294132A

CN112294132A - Exhaust device and air fryer

Info

Publication number: CN112294132A
Application number: CN202011197257.2A
Authority: CN
Inventors: 林健; 赵涛; 任志文; 任孟珂; 裴杰; 周宇
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-02

Abstract

The invention belongs to the technical field of household appliances, and particularly relates to an exhaust device and an air fryer. The air inlet of the exhaust pipe of the exhaust device is communicated with the inside of the air fryer, the exhaust port is communicated with the outside, the air inlet end of the silencing module is arranged close to the air inlet and communicated with the air inlet, and the air outlet end of the silencing module is arranged close to the exhaust port and communicated with the exhaust port, so that the air flow entering the exhaust pipe is exhausted after passing through the silencing module, the sound wave energy generated by the air flow is reduced under the action of the silencing module, the effect of reducing the exhaust noise is achieved, and the problem of high noise of the air fryer in the prior art is solved.

Description

Exhaust device and air fryer

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to an exhaust device and an air fryer.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

In recent years, air fryer is more and more popular with consumers, the air fryer is a derivative of an oven, the air fryer usually utilizes an internal hot air module to generate high-temperature and high-speed hot air, the food is baked at high temperature in a cavity space through hot air circulation, and the grease of the food is expelled while the moisture on the surface layer of the food is brought out. Compared with the traditional oven, the air fryer has the advantages of being smaller and more ingenious, being faster to preheat, being more convenient and healthy to prepare fried food, and the like.

However, because the air fryer needs to balance the internal and external air pressure when working, specifically, the steam generated inside is discharged through the exhaust device, and in order to prevent the steam from excessively losing, namely, the temperature rising speed and the heat preservation performance of the air fryer are ensured, the inner diameter of the exhaust device is usually smaller, and when the larger exhaust speed passes through the exhaust device with the smaller inner diameter, larger exhaust noise is generated, so that the existing air fryer has the problem of larger exhaust noise.

Disclosure of Invention

The invention aims to at least solve the problem of high noise of the air fryer in the prior art. The purpose is realized by the following technical scheme:

the invention provides an exhaust device, which is used for an air fryer and comprises an exhaust pipe and a silencing module, wherein the exhaust pipe comprises an air inlet and an air outlet, the silencing module is arranged in the exhaust pipe, the silencing module comprises an air inlet end and an air outlet end, the air inlet end is communicated with the air inlet, and the air outlet end is communicated with the air outlet.

According to the exhaust device provided by the embodiment of the invention, the exhaust device comprises the exhaust pipe and the silencing module arranged in the exhaust pipe, the air inlet of the exhaust pipe is communicated with the inside of the air fryer, the air outlet is communicated with the outside, the air inlet end of the silencing module is arranged close to the air inlet and is communicated with the air inlet, the air outlet end of the silencing module is arranged close to the air outlet and is communicated with the air outlet, so that the air flow entering the exhaust pipe is exhausted after passing through the silencing module, the sound wave energy generated by the air flow is reduced under the action of the silencing module, the effect of reducing the exhaust noise is achieved, and the problem that the noise of the air fryer in the prior art.

In addition, according to the exhaust apparatus of the embodiment of the present invention, the following technical features may be further provided:

in some embodiments of the invention, the sound attenuation module comprises a plurality of staggered baffles, and a plurality of the baffles form a bent channel for air flow communication.

In some embodiments of the invention, the muffler module comprises:

the partition plates are arranged at intervals along the exhaust direction, and an anechoic cavity is arranged between every two adjacent partition plates;

the silencing pipe group penetrates through the silencing cavity, and the part of the silencing pipe group, which is positioned in the silencing cavity, is communicated with the silencing cavity; the air inlet end and the air outlet end are arranged on the silencing pipeline group and are positioned outside the silencing cavity.

In some embodiments of the present invention, the muffling module further includes a surrounding plate, the surrounding plate is connected to the plurality of partition plates along the circumferential direction of the partition plates, and the muffling cavity is formed between the adjacent partition plates and the inner wall of the surrounding plate.

In some embodiments of the present invention, the silencing pipe set includes a plurality of silencing pipes arranged in a staggered manner, each of the silencing pipes is at least partially located in the silencing cavity, and the plurality of silencing pipes are sequentially communicated in the silencing cavity.

In some embodiments of the present invention, the muffling pipe set includes a first muffling pipe and a second muffling pipe, the air inlet end is disposed at one end of the first muffling pipe, the air outlet end is disposed at one end of the second muffling pipe, which is far away from the air inlet end, and vent holes are respectively disposed on side walls of the first muffling pipe and the second muffling pipe, which are located in the muffling cavity.

In some embodiments of the present invention, the plurality of partition plates include a first partition plate, a second partition plate and a third partition plate which are arranged in parallel at intervals, a first muffling cavity is formed between the first partition plate and the second partition plate, and a second muffling cavity is formed between the second partition plate and the third partition plate;

the silencing pipeline group comprises a first silencing pipeline, a second silencing pipeline and a third silencing pipeline, the air inlet end is arranged on the first silencing pipeline, the air outlet end is arranged on the third silencing pipeline, the first silencing pipeline is communicated with the second silencing pipeline in the second silencing cavity, and the second silencing pipeline is communicated with the third silencing pipeline in the first silencing cavity.

In some embodiments of the present invention, the first sound-deadening pipeline, the second sound-deadening pipeline, and the third sound-deadening pipeline are each provided as a pipeline that is open at both ends, the first sound-deadening pipeline penetrates through the first partition plate and the second partition plate, the second sound-deadening pipeline penetrates through the second partition plate, and the third sound-deadening pipeline penetrates through the second partition plate and the third partition plate.

In some embodiments of the invention, the cross section of the silencing module is the same as the cross section of the exhaust pipe, and the silencing module is detachably inserted into the exhaust pipe.

In a second aspect, the present invention provides an air fryer comprising an exhaust system according to the first aspect of the present invention.

The air fryer in the embodiment of the invention has the same advantages as the air exhausting device in any one of the embodiments, and the description is omitted.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of an exhaust apparatus according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a partial cross-sectional view taken along line A-A of FIG. 2 according to one embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the muffler module of FIG. 3;

fig. 5 is a schematic structural diagram of a muffling module (with a surrounding plate) according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a muffling module (without a baffle) according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of an acoustic elimination module according to a second embodiment of the present invention;

FIG. 8 is a rear view of the muffler module of FIG. 7;

fig. 9 is a schematic structural diagram of an acoustic elimination module according to a third embodiment of the present invention;

FIG. 10 is an isometric view of the muffler module of FIG. 9 installed in the exhaust pipe;

FIG. 11 is a schematic view of the structure in the direction B-B in FIG. 10;

FIG. 12 is a schematic view of the structure of FIG. 10 in the direction C-C;

FIG. 13 is a schematic structural view of an air fryer in accordance with an embodiment of the present invention.

The reference symbols in the drawings denote the following:

100. an exhaust device;

10. an exhaust pipe; 11. an air inlet; 12. an exhaust port;

20. a noise elimination module; 21. an air inlet end; 22. an air outlet end; 23. a partition plate; 24. enclosing plates;

251. a first partition plate, 252, a second partition plate; 253. a third partition plate; 254. an anechoic chamber; 255. a first muffling chamber; 256. a second muffling chamber;

261. a first muffling conduit; 262. a second muffling conduit; 263. a third muffling conduit;

30. a vent hole;

1000. air frying pan; 1100. a main chamber; 1200. a housing;

1101. protecting the lamp; 1102. a heat generating tube; 1103. a hot fan blade; 1104. a volute; 1105. a display screen; 1106. An electric control board; 1107. a hot air motor; 1108. a heat radiation fan; 1109. and a heat dissipation air duct.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, panels, layers and/or sections, these elements, components, panels, layers and/or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, panel, layer or section from another panel, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, panel, layer or section discussed below could be termed a second element, component, panel, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 12, an embodiment of the first aspect of the present invention provides an exhaust device 100, where the exhaust device 100 includes an exhaust pipe 10 and a muffler module 20, the exhaust pipe 10 includes an air inlet 11 and an air outlet 12, the muffler module 20 is installed in the exhaust pipe 10, the muffler module 20 includes an air inlet end 21 and an air outlet end 22, the air inlet end 21 is communicated with the air inlet 11, and the air outlet end 22 is communicated with the air outlet 12.

The exhaust device 100 provided by the embodiment of the invention is arranged in an air fryer and used for discharging water vapor of the air fryer, and aims at the problem of large exhaust noise of the existing air fryer, the exhaust device 100 provided by the embodiment of the invention comprises an exhaust pipe 10 and a silencing module 20 arranged in the exhaust pipe 10, an air inlet 11 of the exhaust pipe 10 is communicated with the inside of the air fryer, an air outlet 12 is communicated with the outside, an air inlet end 21 of the silencing module 20 is arranged close to the air inlet 11 and communicated with the air inlet 11, and an air outlet end 22 is arranged close to the air outlet 12 and communicated with the air outlet 12, so that air flow entering the exhaust pipe 10 is discharged after passing through the silencing module 20, sound wave energy generated by the air flow is reduced under the action of the silencing module 20, the effect of reducing exhaust noise is achieved, and the problem of large noise of the air fryer in the prior art is.

The shape of the cross section of the exhaust pipe 10 may be set to be circular, rectangular, or other shape, and the shape of the cross section of the muffler module 20 may be set according to the shape of the cross section of the exhaust pipe 10. Illustratively, when the cross section of the exhaust pipe 10 is provided in a circular shape, the shape of the cross section of the muffler module 20 is also provided in a circular shape, accordingly. In some embodiments of the present invention, the cross-section of the muffling module 20 is the same as the cross-section of the exhaust pipe 10, and the muffling module 20 is detachably inserted into the exhaust pipe 10.

Specifically, taking the shape of the cross section of the exhaust pipe 10 as a rectangle as an example, the shape of the cross section of the muffler module 20 may be set as a rectangle, and the muffler module 20 may be separately manufactured and inserted into the exhaust pipe 10 from the intake port 11 or the exhaust port 12 of the exhaust pipe 10.

As shown in fig. 1 and 2, the cross section of the exhaust pipe 10 is rectangular, the air inlet 11 is disposed at one end of the exhaust pipe 10, one end of the exhaust pipe 10 far away from the air inlet 11 is closed, and the air outlet 12 is disposed at a position close to the top end of the exhaust pipe 10, that is, when the exhaust device 100 is installed on an air fryer, moisture in the air fryer can be discharged from the top of the exhaust pipe 10, so that the arrangement can prevent the moisture from directly contacting a wall or a cabinet, and reduce the possibility of damage to the wall or the cabinet.

The structure of the sound attenuation module 20 has various forms, and illustratively, in some embodiments of the present invention, the sound attenuation module 20 includes a plurality of partition plates and sound attenuation pipe sets, the plurality of partition plates are arranged at intervals along the exhaust direction, and sound attenuation cavities are arranged between adjacent partition plates; the silencing pipeline group penetrates through the silencing cavity, and the part of the silencing pipeline group, which is positioned in the silencing cavity, is communicated with the silencing cavity; the air inlet end 21 and the air outlet end 22 are arranged on the silencing pipeline group and are positioned outside the silencing cavity.

The quantity of baffle can be two or more, and the baffle that the interval set up is used for forming the anechoic chamber in blast pipe 10, for example two baffles can enclose into an anechoic chamber with between the inner wall of blast pipe 10, and three baffles can enclose into two anechoic chambers with between the inner wall of blast pipe 10, so on, can set up the quantity of baffle according to actual demand.

It should be noted that, in some embodiments of the present invention, the muffling chamber may be formed in such a manner that the edge of the partition plate is directly in close contact with the inner wall of the exhaust pipe 10, thereby ensuring that the muffling chamber does not leak air, for example, if the muffling module 20 needs to be installed in the exhaust pipe 10 with a rectangular cross section, the partition plate is configured as a rectangular partition plate, and after the muffling module 20 is inserted into the exhaust pipe 10, four edges of the rectangular partition plate abut against the inner wall of the exhaust pipe 10.

In other embodiments of the present invention, as shown in fig. 3, the muffling chamber may be formed by providing a baffle 24 at the periphery of the partition, i.e., the muffling module 20 may further include a baffle 24, the baffle 24 is connected to the plurality of partitions along the circumferential direction of the partition, and the edge of each partition is connected to or abutted against the inner wall of the baffle 24, so that the muffling chamber is formed between the adjacent partition and the inner wall of the baffle 24.

Further, the muffling pipe group is used to form a passage through which the air flow flows, in this embodiment, the air inlet end 21 and the air outlet end 22 are respectively disposed on the muffling pipe group, for example, the muffling pipe group passes through the muffling cavity along the direction in which the air inlet 11 points to the air outlet 12, the two ends exposed outside the muffling cavity are respectively disposed with the air inlet end 21 and the air outlet end 22, and the portion located in the muffling cavity is communicated with the muffling cavity, so that the air flow flowing in from the air inlet end 21 flows into the muffling cavity first, and then enters the muffling pipe group and is discharged from the air outlet end 22, thereby weakening the sound wave generated by the air flow and reducing the exhaust noise.

Further, in some embodiments of the present invention, the muffling pipeline group includes a plurality of muffling pipelines arranged in a staggered manner, it can be understood that the plurality of muffling pipelines are all arranged along a direction in which the air inlet 11 points to the air outlet 12, and each muffling pipeline is at least partially located in the muffling cavity, that is, the muffling pipeline may partially extend into the muffling cavity or may be completely located in the muffling cavity, and the portions of each muffling pipeline located in the muffling cavity are sequentially communicated; it should be noted that, in the present embodiment, the connection means that the plurality of muffling pipelines and the muffling cavity form one or more paths for the air flow to flow together.

Specifically, a plurality of silencing pipes are arranged in a staggered manner, part or all of the pipe sections of each silencing pipe are located in the silencing cavity and are communicated with each other in the silencing cavity, and on the basis, when the silencing module 20 is installed in the exhaust pipe 10, airflow enters one of the silencing pipes from the air inlet end 21, then flows into the silencing cavity, then flows into the next silencing pipe from the silencing cavity, and finally flows out from the air outlet end 22.

Therefore, the airflow flows in a passage formed by the plurality of silencing pipelines and the silencing cavity, and the plurality of silencing pipelines are arranged in a staggered mode instead of being directly communicated in a butt joint mode, so that impedance mismatch is generated due to the fact that the airflow cannot be continuously transmitted in the silencing cavity, and partial sound waves are reflected back to the position where the sound source is located or reflected back and forth in the silencing module 20, therefore, the downstream transmission of sound wave energy is hindered, the purpose of weakening the noise is achieved, and the problem that the noise of the air fryer in the prior art is large is solved.

On the basis of the above-described embodiment, for the sake of easy understanding, the following specifically describes the structure of the above-described noise elimination module 20 including the partition plate and the noise elimination pipe group by way of two examples:

example one

In this embodiment, the muffling module 20 comprises two partition plates arranged at intervals, and a muffling cavity 254 is formed between the two partition plates; the silencing pipeline group comprises two silencing pipelines, the air inlet end 21 and the air outlet end 22 are respectively arranged at two ends of the two silencing pipelines which are deviated from each other, vent holes are respectively arranged on the side walls of the two silencing pipelines in the silencing cavity 254, and the vent holes are used for enabling the two silencing pipelines to be communicated in the silencing cavity 254.

Specifically, as shown in fig. 4 to 6, the muffler module 20 includes a first partition 251 and a second partition 252 which are arranged at intervals, and the first partition 251 and the second partition 252 may be parallel; the silencing pipe group comprises a first silencing pipe 261 and a second silencing pipe 262, wherein the air inlet end 21 is arranged at one end of the first silencing pipe 261, and the air outlet end 22 is arranged at one end, far away from the air inlet end 21, of the second silencing pipe 262. The shape of the cross section of the exhaust pipe 10 is set to be rectangular, and the shape of the cross section of the first and

second muffler pipes

261 and 262, the first and

second partition plates

251 and 252 may also be set to be rectangular.

One end of the first muffling pipeline 261 is open, the open end is set as the air inlet end 21 of the muffling module 20, and the first muffling pipeline 261 penetrates through the first partition 251, that is, the end of the first muffling pipeline 261 facing away from the air inlet end 21 extends into the muffling cavity 254; one end of the second sound-deadening pipe 262 is open, the open end is set as the air outlet end 22 of the sound-deadening module 20, and the second sound-deadening pipe 262 penetrates the second partition plate 252, that is, the end of the second sound-deadening pipe 262 facing away from the air outlet end 22 extends into the sound-deadening chamber 254.

In addition to the above-described embodiment, the positions of the first and

second muffler pipes

261 and 262 extending into the muffler chamber 254 are provided with openings through which the air flows, and as shown in fig. 5 and 6, the side walls of the first and

second muffler pipes

261 and 262 located in the muffler chamber 254 may be provided with the vent holes 30, respectively.

It is to be understood that, when the first sound attenuation pipeline 261 and the second sound attenuation pipeline 262 are both provided as rectangular parallelepiped pipelines, the vent holes 30 may be respectively provided on any one of the four side walls, or may be provided on a plurality of side walls; in this embodiment, the number of the vent holes 30 is multiple, and the vent holes 30 may be uniformly arrayed on the side walls of the first muffling conduit 261 and the second muffling conduit 262, so as to expand the range of airflow and further attenuate the energy of sound waves.

Accordingly, in another embodiment of this embodiment, as shown in fig. 6, the end of the second sound-deadening pipe 262 extending into the sound-deadening chamber 254 may be also provided as a closed end, and when the end is provided as a closed end, the end may also extend through the first partition 251, and thus the vent hole 30 of the second sound-deadening pipe 262 is provided in the side wall of the pipe section of the second sound-deadening pipe 262 between the first partition 251 and the second partition 252.

As shown by arrows in fig. 5 and 6, when the muffler module 20 in the present embodiment is installed in the exhaust pipe 10, after the air flow enters the first muffler pipe 261 from the air inlet end 21, the air flow then flows into the muffler chamber 254 from the plurality of air vents 30 on the first muffler pipe 261, then flows into the second muffler pipe 262 from the air vents 30 on the second muffler pipe 262, and finally flows out from the air outlet end 22 on the second muffler pipe 262.

The sizes of the first and

second muffling pipes

261 and 262 in the muffling module 20, the diameters of the vent holes 30, and the hole intervals between the vent holes 30 may be designed to match according to the frequency of the exhaust noise.

With continued reference to fig. 4 to 6, the length of the muffling chamber 254 is L, and the total length of the exhaust pipe 10 is L; the length of the first silencing pipe 261 inserted into the silencing cavity 254 is l1, and the length of the pipe section of the second silencing pipe 262 provided with the vent hole 30 is l 2; the hole pitch between the adjacent vent holes 30 on the first muffling pipe 261 is t 1; the hole pitch between the adjacent vent holes 30 on the second sound-deadening duct 262 is t 2; the diameter of the vent 30 is phid; the height of the first muffling conduit 261 is h 1; the height of the second sound-damping duct 262 is h 2; the overall height of the sound attenuation module 20 is h.

Illustratively, in one particular embodiment, the dimensions of the sound attenuation module 20 satisfy the following ranges: 1/2< L/L < 3/4; 1/3l < l1<2/3 l; 1/2l < l2<2/3 l; 1/4h < h1<1/2 h; 1/4h < h2<1/3 h; 1mm < phid <5 mm; 3mm < t1< t2<10 mm.

According to the muffler module 20 in the embodiment, in the process of flowing of the air flow in the muffler module 20, because the first muffler pipe 261 and the second muffler pipe 262 are arranged in a staggered manner, the cross sections of the two muffler pipes are discontinuous, so that the sound wave of the air flow flowing between the two muffler pipes generates impedance mismatch, thereby causing part of the sound wave to be reflected back to the sound source, or causing part of the sound wave to be reflected back and forth inside the first muffler pipe 261, the second muffler pipe 262 and the muffler cavity 254, thereby preventing the energy of the sound wave from being continuously transmitted, and reducing the noise generated by exhaust; and after the air flow enters the silencing cavity 254 through the plurality of vent holes 30, the air flow can oscillate in the silencing cavity 254, so that part of sound wave energy can be dissipated, the exhaust noise is further reduced, and the problem that the air fryer in the prior art is relatively noisy is solved.

Example two

As shown in fig. 7 and 8, in some embodiments of the present invention, the muffling module 20 includes three partition plates, namely a first partition plate 251, a second partition plate 252 and a third partition plate 253, which are arranged at intervals, a first muffling chamber 255 is formed between the first partition plate 251 and the second partition plate 252, and a second muffling chamber 256 is formed between the second partition plate 252 and the third partition plate 253; the first partition 251, the second partition 252, and the third partition 253 may be parallel.

On this basis, the muffling pipeline group comprises three muffling pipelines, namely a first muffling pipeline 261, a second muffling pipeline 262 and a third muffling pipeline 263, in the embodiment, the cross section of the exhaust pipe 10 is set to be rectangular, and the cross sections of the first muffling pipeline 261, the second muffling pipeline 262, the third muffling pipeline 263, the first partition plate 251, the second partition plate 252 and the third partition plate 253 can also be set to be rectangular.

Wherein, the air inlet end 21 is arranged on the first muffling pipeline 261, the air outlet end 22 is arranged on the third muffling pipeline 263, the first muffling pipeline 261 is communicated with the second muffling pipeline 262 in the second muffling cavity 256, and the second muffling pipeline 262 is communicated with the third muffling pipeline 263 in the first muffling cavity 255; the communication between the sound-deadening ducts may be performed in the same manner as in the first embodiment, that is, the vent holes 30 are provided in the side walls.

In some embodiments of the present invention, as shown in fig. 7, each of the first muffling pipe 261, the second muffling pipe 262 and the third muffling pipe 263 is provided as a pipe having two open ends, one open end of the first muffling pipe 261 is provided as the air inlet end 21 of the muffling module 20, and the first muffling pipe 261 penetrates the first partition 251 and the second partition 252, that is, the other open end of the first muffling pipe 261 extends into the second muffling chamber 256; the second muffling pipeline 262 penetrates through the second partition plate 252, that is, one end of the second muffling pipeline 262 extends into the first muffling chamber 255, and the other end thereof extends into the second muffling chamber 256; one of the open ends of the third muffling pipeline is set as the air outlet end 22 of the muffling module 20, and the third muffling pipeline 263 penetrates through the second partition plate 252 and the third partition plate 253, i.e., the other open end of the third muffling pipeline 263 extends into the first muffling chamber 255. Thus, the first muffling conduit 261 communicates with the third muffling conduit 263 within the second muffling chamber 256, and the third muffling conduit 263 communicates with the second muffling conduit 262 within the first muffling chamber 255.

As shown by the arrows in fig. 7, when the muffler module 20 in the present embodiment is installed in the exhaust pipe 10, the air flow enters the first muffler pipe 261 from the air inlet end 21, then flows into the second muffler chamber 256 from the other open end of the first muffler pipe 261, then enters the second muffler pipe 262, then flows into the first muffler chamber 255 from the other open end of the second muffler pipe 262, then enters the third muffler pipe 263, and finally flows out from the air outlet end 22 on the third muffler pipe 263.

The sizes of the first muffling pipe 261, the second muffling pipe 262, the third muffling pipe 263, the first muffling chamber 255 and the second muffling chamber 256 in the muffling module 20 can be designed to match with each other according to the frequency of the exhaust noise.

With continued reference to fig. 7 and 8, the first muffling chamber 255 has a length L1, and the second muffling chamber 256 has a length L2; the first silencing pipe 261 is inserted into the second silencing cavity 256 by a length la2, and the second silencing pipe 262 is inserted into the second silencing cavity 256 by a length lb 2; the second muffler pipe 262 is inserted into the first muffler chamber 256 for a length lb 1; the third muffling conduit 263 is inserted into the first muffling chamber 256 by a length lc 1; the height of the first muffling conduit 261 is ha; the height of the second sound-damping duct 262 is hb; the height of the third muffler pipe 263 is hc; the overall height of the sound attenuation module 20 is h.

Illustratively, the cross-sectional flow area of the first sound damping pipe 261 is greater than that of the second sound damping pipe 262 by equal to or greater than that of the third sound damping pipe 263; in one particular embodiment, the dimensions of the sound attenuation module 20 satisfy the following ranges: 1/4< L1/L2< 1/2; 1/3L1< lb1<2/3L 1; 1/3L1< lc1<2/3L 1; 1/6L2< lb2<1/2L 2; 1/3L2< la2<2/3L 2.

According to the noise elimination module 20 in the embodiment, in the process that the airflow flows in the noise elimination module 20, due to the fact that the first noise elimination pipeline 261, the second noise elimination pipeline 262 and the third noise elimination pipeline are arranged in a staggered mode, impedance mismatch is generated by sound waves due to the fact that the cross sections of the first noise elimination pipeline, the second noise elimination pipeline and the third noise elimination pipeline are discontinuous, therefore, part of the sound waves are reflected back to a sound source or reflected back and forth in the noise elimination module 20, the sound wave energy is prevented from being continuously transmitted, noise generated by exhaust is reduced, and the problem that noise of an air fryer in.

EXAMPLE III

The structure of the sound attenuation module 20 has various forms, for example, in other embodiments of the present invention, the sound attenuation module 20 includes a plurality of partitions 24 arranged in a staggered manner, specifically, in this embodiment, the sound attenuation module 20 is configured as a labyrinth sound attenuator, as shown in fig. 9 to 12, the labyrinth sound attenuator includes a plurality of partitions 24 arranged in a staggered manner, the labyrinth sound attenuator can be integrally formed by directly using a metal plate through processes of stamping, folding, cutting and the like, and in use, the labyrinth sound attenuator can be directly inserted into the exhaust pipe 10.

As shown by arrows in fig. 9 and 12, a bent channel for air flow circulation is formed between the plurality of partition plates 24 of the labyrinth muffler, when air flow flows in the labyrinth muffler, the partition plates 24 can rub and block sound waves, so that sound energy transmitted in the channel can be converted into heat energy, the purpose of reducing exhaust noise is achieved, and the problem of high noise of the air fryer in the prior art is solved.

The size of the muffler module 20 may be designed to match the frequency of the exhaust noise. With continued reference to fig. 11 and 12, the overall length of the labyrinth muffler is L, and the overall height of the labyrinth muffler is h; the overall width of the labyrinth muffler is b 3; the arrangement spacing between the partition boards 24 is l1, l2, l 3; the height of the partition 24 is h1, h 2; the partition 24 has widths b1, b 2.

Illustratively, in one particular embodiment, the length of the sound attenuation module 20 and the size of the partition 24 satisfy the following ranges: 1/2h < h1< h; 1/2h < h2< h; 1/2b3< b1< b 3; 1/2b3< b2< b 3; l2<1/3 l; l3< l 2.

An embodiment of the second aspect of the present invention provides an air fryer 1000, the air fryer 1000 comprising an exhaust apparatus 100 according to any one of the embodiments of the first aspect of the present invention.

Specifically, as shown in fig. 13, the air fryer 1000 includes a main cavity 1100 and an outer cover 1200, wherein an auxiliary heating pipe, a baking tray and a crumb tray are arranged in the main cavity 1100; the side wall of the main cavity is provided with a protective lamp 1101, a heating pipe 1102, a hot air fan 1103, a volute 1104, a display screen 1105, an electric control board 1106, a hot air motor 1107, a heat dissipation fan 1108, a heat dissipation air duct 1109 and an exhaust device 100. The exhaust apparatus 100 has an inlet 11 of the exhaust pipe 10 communicating with the scroll 1104 and the other end passing through the back plate of the main chamber 1100, so that the exhaust port 12 communicates with the outside.

In the working process of the air fryer 1000, the heating pipe 1102 and the hot air fan 1103 generate high-speed and high-temperature hot air together, hot air circulation is performed in the space of the main cavity 1100, food is baked at high temperature, and moisture on the surface layer of the food is brought out at high temperature, so that water vapor is generated; the moisture enters the exhaust device 100 communicated with the volute 1104 and flows through the muffler module 20 arranged in the exhaust device 100, and the sound wave generated by the moisture flow is attenuated after passing through the muffler module 20 and finally is exhausted from the exhaust port 12 of the exhaust device 100.

The air fryer 1000 according to the embodiment of the present invention has the same advantages as the air exhausting device 100 according to any of the above embodiments, and thus, the description thereof is omitted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an exhaust apparatus for the air is fried a pot, its characterized in that, includes blast pipe and noise elimination module, the blast pipe includes air inlet and gas vent, the noise elimination module is installed in the blast pipe, the noise elimination module includes the inlet end and gives vent to anger the end, the inlet end with the air inlet intercommunication, give vent to anger the end with the gas vent intercommunication.

2. The exhaust apparatus of claim 1, wherein the muffler module includes a plurality of staggered baffles defining tortuous passages therebetween for the flow of gas.

3. The exhaust apparatus of claim 1, wherein the muffler module comprises:

4. The exhaust device according to claim 3, wherein the muffling module further comprises a baffle plate, the baffle plate is connected to the plurality of baffle plates in a surrounding manner along the circumferential direction of the baffle plates, and the muffling cavity is formed between the adjacent baffle plates and the inner wall of the baffle plate.

5. The exhaust device according to claim 3, wherein the muffling pipe set comprises a plurality of muffling pipes which are arranged in a staggered manner, each muffling pipe is at least partially located in the muffling cavity, and the plurality of muffling pipes are sequentially communicated in the muffling cavity.

6. The exhaust device according to claim 5, wherein the muffling pipe set comprises a first muffling pipe and a second muffling pipe, the air inlet end is arranged at one end of the first muffling pipe, the air outlet end is arranged at one end of the second muffling pipe, which is far away from the air inlet end, and vent holes are respectively arranged on the side walls of the first muffling pipe and the second muffling pipe, which are located in the muffling cavity.

7. The exhaust apparatus according to claim 5, wherein the plurality of partitions includes a first partition, a second partition and a third partition arranged in parallel and spaced apart, a first muffling chamber being formed between the first partition and the second partition, and a second muffling chamber being formed between the second partition and the third partition;

8. The exhaust apparatus of claim 7, wherein the first, second, and third muffling conduits are each provided as open-ended conduits, the first muffling conduit extending through the first and second partitions, the second muffling conduit extending through the second partition, and the third muffling conduit extending through the second and third partitions.

9. The exhaust device according to any one of claims 1 to 8, wherein a cross section of the muffler module is the same as a cross section of the exhaust pipe, and the muffler module is detachably inserted into the exhaust pipe.

10. An air fryer comprising the exhaust apparatus of any one of claims 1 to 9.