CN116006516A

CN116006516A - Exhaust module and range hood

Info

Publication number: CN116006516A
Application number: CN202310009704.4A
Authority: CN
Inventors: 宋祖龙; 贾志强; 勾健; 蒋济武; 王佳新; 何晓益
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-04-25
Also published as: WO2024146251A1

Abstract

The application discloses exhaust module and lampblack absorber. The air draft module comprises a box body and a fan, and the box body is provided with an air inlet; the fan is arranged in the box body and comprises a volute and a wind wheel arranged in the volute, the wind wheel is a centrifugal wind wheel so as to form a first air inlet and a second air inlet in the axial direction of the wind wheel, the volute is provided with a first air vent communicated with the first air inlet and a second air vent communicated with the second air inlet, and one side of the box body provided with the air inlet is opposite to one side of the volute provided with the first air vent; when the air draft module is installed along the air outlet in the first direction, the rotation center of the wind wheel is opposite to the air inlet along the axial direction of the wind wheel; when the air draft module is installed along the air outlet in the second direction opposite to the first direction, the rotation center of the wind wheel is staggered with the air inlet along the axial direction of the wind wheel, a diversion space communicated with the second air inlet is formed between the volute and the box body, and at least part of the diversion space is opposite to the air inlet. Through mutually supporting between box and the spiral case, improve the installation flexibility of air extraction module.

Description

Exhaust module and range hood

Technical Field

The application relates to the technical field of range hoods, in particular to an exhaust module and a range hood.

Background

The split type lampblack absorber is provided with the exhaust module and draws in the cigarette module of mutual separation, and exhaust module sets up the top of drawing in the cigarette module in, and exhaust module and draw in the cigarette module and pass through the connecting pipe and connect in order to realize the transmission of oil smoke. Due to the different kitchen environments, when the exhaust module changes the air outlet direction, the flow of the oil smoke can be influenced, and howling abnormal sound is generated.

Disclosure of Invention

The present application aims to solve, at least to some extent, the technical problems in the related art. For this purpose, the application proposes an exhaust module.

To achieve the above object, the present application discloses an exhaust module, including:

the box body is provided with an air inlet; and

the fan is arranged in the box body and comprises a volute and a wind wheel arranged in the volute, the wind wheel is a centrifugal wind wheel so as to form a first air inlet and a second air inlet in the axial direction of the wind wheel, the volute is provided with a first air vent communicated with the first air inlet and a second air vent communicated with the second air inlet, and one side of the box body provided with the air inlet is opposite to one side of the volute provided with the first air vent;

when the air draft module is installed along the air outlet in the first direction, the rotation center of the wind wheel is opposite to the air inlet along the axial direction of the wind wheel;

when the air draft module is installed along the air outlet in the second direction opposite to the first direction, the rotation center of the wind wheel is staggered with the air inlet along the axial direction of the wind wheel, a diversion space communicated with the second air inlet is formed between the volute and the box body, and at least part of the diversion space is opposite to the air inlet.

In some embodiments of the present application, the volute is disposed at a distance from the casing to form the diversion space.

In some embodiments of the present application, the flow guiding space extends along an axial direction of the wind wheel, and is disposed at a distance from the second ventilation opening and the box body along the axial direction of the wind wheel.

In some embodiments of the present application, the housing includes a first side plate, the scroll casing and the first side plate forming the diversion space therebetween;

defining a third direction perpendicular to the second direction, wherein the minimum distance between the first side plate and the first ventilation opening is D1, and the maximum distance between the first side plate and the air inlet is D2 along the third direction, so that D2 is less than or equal to D1.

In some embodiments of the present application, along the third direction, a minimum distance between the first side plate and the volute is D3, satisfying d3= (0.8-1.5) × (D1-D3).

In some embodiments of the present application, the air inlet extends along the first direction and the second direction, and the air inlet is rectangular.

In some embodiments of the present application, the box includes a lower side plate, the lower side plate is provided with the air inlet, and the lower side plate is suitable for rotating by a preset angle so that the air extraction module is switched to be installed along the air outlet in the first direction and the second direction.

In some embodiments of the present application, the lower side plate is rectangular.

In some embodiments of the present application, when the air extraction module is installed along the air outlet in the first direction, the volute is disposed at a distance from the box body along the axial direction of the wind wheel, and the volute is disposed at a distance from the box body along the circumferential direction of the wind wheel.

The application also discloses lampblack absorber, lampblack absorber includes the convulsions module of above-mentioned embodiment.

According to the technical scheme, the exhaust module is provided with two installation modes in the air outlet direction, namely, the installation mode is the installation mode of air outlet in the first direction and the installation mode of air outlet in the second direction, when the installation mode is the installation mode of air outlet in the first direction, the rotation center of the wind wheel is opposite to the air inlet, so that most of oil smoke is sucked into the volute through the first ventilation opening, when the installation mode is the air outlet in the second direction, the rotation center of the wind wheel is staggered with the air inlet, a diversion space is formed between the volute and the box body, the oil smoke can be sucked into the volute from the second ventilation opening through the diversion space, rapid acceleration of flow velocity is avoided when the oil smoke flows into the first ventilation opening, the generation of howling abnormal sound is reduced, the installation flexibility of the exhaust module is improved through the arrangement, the exhaust module is suitable for more kitchen environments, and performance in the installation mode in different directions is ensured.

Additional advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other designs can be obtained according to the structures shown in these drawings without the need of creative efforts for a person skilled in the art.

FIG. 1 is a schematic diagram of a range hood in some embodiments;

FIG. 2 is an exploded view of a range hood in some embodiments;

FIG. 3 is a schematic diagram of an extraction module (with air out in a first direction) in some embodiments;

FIG. 4 is a cross-sectional view of an extraction module (air out in a first direction) in some embodiments;

FIG. 5 is a cross-sectional view of an extraction module (out-wind in a first direction) in some embodiments;

FIG. 6 is a bottom view of the extraction module (out-wind in a first direction) in some embodiments;

FIG. 7 is a schematic diagram of an exhaust module (exhausting air in a second direction) in some embodiments;

FIG. 8 is a cross-sectional view of an extraction module (air out in a second direction) in some embodiments;

FIG. 9 is a schematic diagram of an extraction module (air out in a second direction) in some embodiments;

fig. 10 is a schematic diagram of an exhaust module (exhausting air in a second direction) in some embodiments.

Reference numerals illustrate:

an air extraction module 1000;

the box 1100, front side panel 1110, rear/first side panel 1120, left side panel 1130, right side panel 1140, upper side panel 1150, lower side panel 1160, air inlet 1161;

a blower 1200;

volute 1210, first side 1211, first vent 1212, second side 1213, second vent 1214, shroud 1215, air outlet 1218;

a wind wheel 1220, a first air inlet 1221, a second air inlet 1222, a center of rotation 1223;

a diversion space 1300;

a connection pipe 2000;

a smoke gathering module 3000;

and a smoke exhaust duct 4000.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The present application provides an exhaust module 1000, and the exhaust module 1000 will be described in detail below with reference to a range hood, and it is to be understood that the exhaust module 1000 disclosed in the present application is not limited to be applied to a range hood, but may be applied to other exhaust and smoke exhaust devices.

Referring to fig. 3 to 9, in some embodiments of the present application, an air extraction module 1000 includes a box 1100 and a fan 1200, the box 1100 is provided with an air inlet 1161, the fan 1200 includes a wind wheel 1220 and a volute 1210, the volute 1210 has a first air vent 1212 and a second air vent, the wind wheel 1220 is a centrifugal wind wheel, and the wind wheel 1220 has a first air inlet 1221 and a second air inlet 1222, and by the mutual cooperation of the fan 1200 and the box 1100, the air extraction module 1000 is adapted to the installation of air outlets in different directions, so as to ensure performance.

Specifically, the exhaust module 1000 is adapted to cooperate with the connection pipe 2000 and the smoke collecting module 3000 to form a range hood. The smoke collecting module 3000 has a main function of collecting smoke, the connecting pipe 2000 has a function of realizing the transmission of the smoke, and the air exhausting module 1000 has a main function of forming negative pressure, thereby providing power for the flow of the smoke and realizing the suction of the smoke. The smoke collecting module 3000 forms a hollow cavity, the smoke is easily collected in the cavity for relay and is conveniently sucked and discharged by the air suction module 1000 through the connecting pipe 2000, the air suction module 1000 comprises the fan 1200, and the fan 1200 acts to form negative pressure, so that the smoke is sucked. The smoke collecting module 3000 and the air exhausting module 1000 are two independent and separated components, and the transmission of the oil smoke is realized through the connecting pipe 2000, that is, the range hood of the type forms a split structure, the air exhausting module 1000 can be arranged in a suspended ceiling of a kitchen, and the suspended ceiling of the kitchen is a relatively sealed space, so that the noise emitted by the air exhausting module 1000 can be effectively sealed. It is also that the ventilation module 1000 is separated from the smoke gathering module 3000, so that the space at the front end of the smoke gathering module 3000 can be released, and the influence of the size of the ventilation module 1000 on the modeling of the smoke gathering module 3000 is weakened. It is understood that the term "cooking fume" as used herein refers to a gaseous mixture produced during cooking and comprising air, water vapor and various organic materials.

The exhaust module 1000 needs to be connected with the exhaust pipe 4000, the exhaust pipe 4000 passes through the wall of the kitchen to be connected to the outside, and because the kitchen designs of different users are different, the positions of holes reserved on the wall of the kitchen, through which the exhaust pipe 4000 passes, are also different, for this reason, the exhaust module 1000 can be designed to be installed along different air outlet directions, for example, the exhaust module 1000 can be installed along two directions, namely, a first direction and a second direction, the first direction can be from left to right in fig. 3, the second direction can be from right to left in fig. 7, in the two air outlet directions, the directions of the air outlets 1218 of the spiral case 1210 are opposite, and when the exhaust module 1000 is installed along the air outlet in the first direction, the air outlet 1218 of the spiral case 1210 faces to the right, otherwise, the air outlet 1218 of the spiral case 1210 faces to the left. Since the case 1100 of the air extraction module 1000 needs to be connected to the smoke collection module 3000 through the connection pipe 2000, the connection position (the air inlet 1161) of the case 1100 and the connection pipe 2000 of the air extraction module 1000 cannot be changed relative to the connection pipe 2000, and in order to avoid that the connection pipe 2000 occupies too much space in front (near the user), the air inlet 1161 of the case 1100 is not disposed in the middle position of the case 1100 but disposed at the rear, so that when the air outlet direction of the scroll 1210 is changed, the position change occurs between the scroll 1210 and the air inlet 1161, thereby affecting the flow of the air flow.

For this reason, in order to improve performance of the air extraction module 1000 when installed in different directions, the air extraction module is adapted to the installation in different directions, and is solved by the cooperation of the case 1100 and the fan 1200.

The case 1100 has the air inlet 1161, and it is understood that the case 1100 is a component for accommodating the blower 1200, and then the case 1100 needs to be configured as a hollow structure so as to implement the installation of the blower 1200 in the case 1100. For example, as shown in fig. 1 and 2, the box 1100 has a flat cubic structure as a whole, and has six side plates, namely an upper plate 1150, a lower plate 1160, a front plate 1110, a rear plate 1120, a left plate 1130 and a right plate 1140, the lower plate 1160 is provided with an air inlet 1161, the connection pipe 2000 and the air suction module 1000 are connected to the lower plate 1160 of the box 1100, and are communicated with the air inlet 1161 of the lower plate 1160, and the oil smoke transmitted through the connection pipe 2000 enters the box 1100 through the air inlet 1161.

The fan 1200 includes a wind wheel 1220 and a scroll 1210, and the scroll 1210 is used for accommodating the wind wheel 1220, so as to guide the oil smoke. In this embodiment, the scroll 1210 is disposed laterally, that is, the axial direction of the scroll 1210 extends in the up-down direction, so that the thickness of the entire exhaust module 1000 can be reduced. The volute 1210 is provided with a vent and an air outlet 1218, and the wind wheel 1220 rotates to drive the oil smoke to enter the volute 1210 through the vent and then to be discharged through the air outlet 1218. The scroll 1210 has a first side 1211 and a second side 1213 opposite to each other, the first side 1211 is located below the second side 1213, the ventilation openings of the scroll 1210 include two ventilation openings, namely a first ventilation opening 1212 and a second ventilation opening 1214, the first ventilation opening 1212 is disposed at the first side 1211, the second ventilation opening 1214 is disposed at the second side 1213, and when the oil smoke enters the casing 1100, the oil smoke can be sucked into the scroll 1210 through the first ventilation opening 1212 and the second ventilation opening 1214 (which will be described in detail later). Specifically, the wind wheel 1220 is installed inside the scroll case 1210, the wind wheel 1220 is specifically a centrifugal wind wheel 1220, the wind wheel 1220 is provided with a first air inlet 1221 and a second air inlet 1222 in an axial direction thereof, that is, an extending direction of a rotation center 1223 of the wind wheel 1220, as shown in an up-down direction of fig. 4, the first air inlet 1221 is communicated with the first air inlet 1212, the second air inlet 1222 is communicated with the second air inlet 1214, such that oil smoke can be sucked into the inside of the scroll case 1210 through the first air inlet 1212 and the first air inlet 1221, and can be sucked into the inside of the scroll case 1210 through the second air inlet 1214 and the second air inlet 1222, and then discharged through the air outlet 1218.

The side of the housing 1100 where the air inlet 1161 is provided is opposite to the side of the scroll 1210 where the first air vent 1212 is provided such that the first air vent 1212 is closer to the air inlet 1161 than the second air vent 1214. For example, in conjunction with the orientation shown in fig. 4, the lower side plate 1160 of the housing 1100 is opposite the first side 1211 of the scroll casing 1210, the lower side plate 1160 of the housing 1100 is positioned below the first side 1211 of the scroll casing 1210, and the second side 1213 of the scroll casing 1210 is positioned above the first side 1211 of the scroll casing 1210. When the ventilation module 1000 needs to be installed in the first direction, for example, when the air outlet 1218 of the volute 1210 is directed to the right, the air inlet 1161 is opposite to the rotation center 1223 of the wind wheel 1220 along the axial direction of the wind wheel 1220, i.e. in the up-down direction shown in fig. 4, where the projection of the air inlet 1161 covers the rotation center 1223 of the wind wheel 1220, or the projection of the rotation center 1223 of the wind wheel 1220 is located in the range enclosed by the air inlet 1161 along the top-down direction, so that a large area of overlapping between the first air inlet 1212 and the first air inlet 1221 and the air inlet 1161 can be ensured, and when the smoke enters the box 1100 from the air inlet 1161, the smoke can be sucked into the volute 1210 through the first air inlet 1212 and the first air inlet 1221 quickly, so as to reduce the smoke flow path, reduce the resistance of smoke transmission, ensure the air inlet quantity, and improve the performance of the ventilation module 1000.

When the exhaust module 1000 needs to be installed in the second direction, where the second direction is opposite to the first direction, as shown in fig. 7 to 9, for example, when the air outlet 1218 of the volute 1210 is set to the left, the air inlet 1161 and the rotation center 1223 of the wind wheel 1220 are offset along the axial direction of the wind wheel 1220, where such offset means that the projection of the air inlet 1161 cannot cover the rotation center 1223 of the wind wheel 1220 in the bottom-up direction, or the projection of the rotation center 1223 of the wind wheel 1220 is located outside the range enclosed by the air inlet 1161 in the top-down direction. That is, the air inlet 1161 is not centrally disposed with respect to the case 1100, for example, the air inlet 1161 is disposed at a rear side with respect to the case 1100, i.e., near a wall of a kitchen, so that it is possible to prevent the connection pipe 2000 from occupying an excessive space in front when the connection pipe 2000 is connected. When the air inlet 1161 is wrong with the rotation center 1223 of the wind wheel 1220, the air inlet 1161, the first air inlet 1212 and the first air inlet 1221 cannot form a large area of overlapping, if the oil smoke is sucked only through the first air inlet 1212, a great amount of oil smoke can be rapidly changed in direction on the path from the air inlet 1161 to the first air inlet 1212, and the flow rate of the oil smoke is increased, so that howling sound can be generated. In order to solve the problem, a diversion space 1300 is formed between the box 1100 and the scroll 1210, and the air inlet 1161 is opposite to at least part of the diversion space 1300, i.e. opposite to each other along the up-down direction, so that when a large amount of oil smoke enters the box 1100 from the air inlet 1161, the oil smoke can be guided to flow to the second air inlet 1214 through the diversion space 1300, and then is sucked into the scroll 1210 through the second air inlet 1214 and the second air inlet 1222, thereby sharing the air flow flowing through the first air inlet 1212 and the first air inlet 1221, not only ensuring the air flow of the air suction module 1000, but also preventing the occurrence of howling, thus ensuring the performance of the air suction module 1000 when being installed in different air outlet directions, meeting the requirements of the air suction module 1000 when being installed in different air outlet directions, and improving the installation flexibility of the air suction module 1000.

Optionally, the air extraction module 1000 is installed along different directions by the following manner, and in some embodiments of the present application, the lower side plate 1160 is configured to be rotatable by a certain angle so as to install the air extraction module 1000 along different air extraction directions, so that it is not necessary to individually rotate the fan 1200 in a certain direction relative to the whole box 1100, thereby reducing the difficulty of installation.

For example, if the air outlet 1218 of the scroll case 1210 faces right and the rotation center 1223 of the wind wheel 1220 faces the air inlet 1161, the air outlet 1218 of the scroll case 1210 needs to be changed to face left, and the lower plate 1160 of the case 1100 can be rotated 180 ° around the vertical direction (up-down direction), and the air inlet 1161 that is originally backward needs to be changed to face forward, and the whole case 1100 needs to be rotated 180 ° around the vertical direction again because the matching between the air inlet 1161 and the connecting pipe 2000 needs to be ensured, and the air outlet 1218 of the scroll case 1210 is changed to face left at this time, so that the air outlet installation mode to face left is realized. The lower side plate 1160 of the casing 1100 may be turned 180 ° around the horizontal direction (left-right direction), and the air inlet 1161 that is originally located at the rear is changed to be located at the front, and the whole casing 1100 needs to be rotated 180 ° around the vertical direction because the matching between the air inlet 1161 and the connecting pipe 2000 needs to be ensured, and the air inlet 1161 is changed to be located at the rear, and the air outlet 1218 of the scroll 1210 is changed to be located at the left, so that the air outlet installation mode towards the left is realized. Optionally, the lower side plate 1160 is rectangular, so that space is fully utilized, and the rectangular lower side plate 1160 also forms a symmetrical structure, so that installation after the lower side plate 1160 rotates by an angle is facilitated.

It can be appreciated that, on the premise that the air outlet 1218 of the volute 1210 faces to the left and the rotation center 1223 of the wind wheel 1220 and the air inlet 1161 are wrong, the operation is required to change the air outlet 1218 of the volute 1210 to the right, and the detailed description is not repeated.

In order to more conveniently form the diversion space 1300, in some embodiments of the present application, the box 1100 and the scroll 1210 are spaced apart to form the diversion space 1300, so that the complexity of the placement of the diversion space 1300 is reduced, and it is understood that the space where the airflow flows is not necessarily completely separated from the placement, and the two can be supported by a bracket, as follows. For example, the scroll case 1210 includes a first side 1211 and a second side 1213, a portion between the first side 1211 and the second side 1213 of the scroll case 1210 is referred to as a shroud 1215, and a distance between the shroud 1215 of the scroll case 1210 and the case 1100 forms a diversion space 1300, and particularly, a distance between the shroud 1215 and the rear side 1120 of the case 1100 forms the diversion space 1300, so that the flow of the oil smoke from the diversion space 1300 can be guided without separately providing an air guide. Optionally, in order to reduce the resistance of the oil smoke flowing in the diversion space 1300, the diversion space 1300 extends vertically, i.e. extends vertically, the vertical direction is the axial direction of the wind wheel 1220, and the second air inlet 1214 is disposed at a certain distance from the second side 1213 of the casing 1100, i.e. a certain space is formed between the second side 1213 of the volute 1210 and the upper side plate 1150 of the casing 1100, so that the oil smoke flowing out of the diversion space 1300 is conveniently sucked into the volute 1210 through the second air inlet 1214 and the second air inlet 1222.

As shown in fig. 8 and 10, in order to reduce occurrence of squeaking sounds as much as possible when the air extraction module 1000 is mounted to the second direction air-out, a third direction is defined to ensure the suction amount of the entire air extraction module 1000, the third direction is perpendicular to the second direction, that is, perpendicular to the first direction, as mentioned earlier, the first direction is a left-to-right direction, the second direction is a right-to-left direction, so that the third direction is a front-to-back direction, a minimum distance between the first ventilation opening 1212 and the first side plate 1120 is D1 along the front-to-back direction, a maximum distance between the air inlet 1161 and the first side plate 1120 is D2, and it is required to satisfy D2D 1, so that more oil smoke is sucked into the scroll 1210 through the guide space 1300 and then through the second ventilation opening 1214 and the second air inlet 1222, and the amount of air intake of the entire air extraction module 1000 is further reduced. It can be appreciated that the first side plate 1120 is the rear side plate 1120 of the case 1100.

Optionally, along the third direction, the minimum distance between the scroll 1210 and the first side plate 1120 is D3, satisfying d3= (0.8-1.5) × (D1-D3). For example, the minimum distance between the shroud 1215 of the scroll 1210 and the first side plate 1120 ensures that there is sufficient space for the flow of oil and smoke, and that the amount of oil and smoke passing through the second air inlet 1214 and the second air inlet 1222 is more sufficient.

Alternatively, as shown in connection with fig. 10, in some embodiments of the present application, the air inlets 1161 extend in the first and second directions, i.e., in the left-right direction, and the air inlets 1161 are rectangular. Generally, the peripheral direction of the volute 1210 is in a circumferential structure, so that the corner of the air inlet 1161 is not right opposite to the volute 1210, that is, the formed diversion space 1300 is larger, so that the oil smoke is more easily diverted, and the occurrence of howling is reduced.

In some embodiments of the present application, as shown in fig. 4, when the air extraction module 1000 is installed to output air in the first direction, the scroll casing 1210 and the casing 1100 are disposed at a certain distance along the axial direction of the air wheel 1220, i.e., in the up-down direction as shown in fig. 4, i.e., the second side 1213 of the scroll casing 1210 is spaced from the upper side plate 1150 of the casing 1100, and the first side 1211 of the scroll casing 1210 is spaced from the lower side plate 1160 of the casing 1100. Along the circumferential direction of the wind wheel 1220, i.e., the front-rear and left-right directions shown in fig. 3 and 4, a certain distance is also provided between the scroll 1210 and the casing 1100, i.e., the shroud 1215 of the scroll 1210 is spaced from the front side plate 1110, the rear side plate 1120, the left side plate 1130 and the right side plate 1140 of the casing 1100. As such, when the oil soot enters the case 1100 through the air inlet 1161, it may flow in a space formed between the scroll 1210 and the case 1100, thereby being sucked into the scroll 1210 through the first air inlet 1212 and the first air inlet 1221, and through the second air inlet 1214 and the second air inlet 1222, and then being discharged through the air outlet 1218 of the scroll 1210. Because the wind wheel 1220 cooperates with the volute 1210 to realize the flow of the oil smoke at two sides, on the premise that the space volume occupied by the air draft module 1000 is unchanged, the air intake of the air draft module 1000 can be improved, the oil smoke accumulation caused by insufficient oil smoke flow area is avoided, and the suction performance of the suction module is improved.

The application also discloses a lampblack absorber, lampblack absorber includes the convulsions module 1000 of above-mentioned embodiment. It can be appreciated that the structure of the air extraction module 1000 in this embodiment adopts the technical solution of the foregoing embodiment, so that the air extraction module at least has the beneficial effects brought by the technical solution of the foregoing embodiment, and the detailed description is not repeated here.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structural changes made in the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims

1. An exhaust module, comprising:

the box body is provided with an air inlet; and

2. The extraction module of claim 1, wherein the volute is positioned a distance from the housing to form the flow-directing space.

3. The draft module of claim 1, wherein said flow guiding space extends in an axial direction of said rotor, and said second ventilation opening is spaced from said housing in an axial direction of said rotor.

4. The exhaust module of claim 1, wherein the housing includes a first side plate, the volute and the first side plate forming the flow-guiding space therebetween;

5. The extraction module of claim 4, wherein a minimum distance between said first side plate and said volute in said third direction is D3, satisfying d3= (0.8-1.5) × (D1-D3).

6. The exhaust module as recited in claim 4 wherein said air inlet extends in said first and second directions and said air inlet is rectangular.

7. The extraction module of claim 1, wherein the housing includes a lower side plate provided with the air inlet, the lower side plate being adapted to rotate a predetermined angle to switch the extraction module for air-out installation in a first direction and a second direction.

8. The extraction module of claim 7, wherein said lower side panel is rectangular.

9. The extraction module as claimed in claim 1, wherein the volute is spaced from the housing in an axial direction of the rotor and the volute is spaced from the housing in a circumferential direction of the rotor when the extraction module is installed to discharge air in the first direction.

10. A range hood comprising an extraction module as claimed in any one of claims 1 to 9.