CN215675341U

CN215675341U - Air purifying device

Info

Publication number: CN215675341U
Application number: CN202120594803.XU
Authority: CN
Inventors: 李佳阳; 蒋济武
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-01-28
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to the technical field of household appliances, and provides an air purification device. This air purification device includes: the air conditioner comprises a machine body, a fan and a fan, wherein an air outlet is formed at the upper part of the machine body, and an air inlet is formed at the lower part of the machine body; the cross-flow fan is arranged in the machine body and positioned between the air outlet and the air inlet; the blades of the cross-flow fan extend along the front and rear direction of the machine body. According to the utility model, the cross-flow fan is arranged in the machine body along the front and back directions of the machine body, so that the weight of the whole air purification device can be reduced by virtue of the advantages of large air volume and small volume of the cross-flow fan, the axial length of the cross-flow fan is not limited, the length of the blade can be arbitrarily selected according to different requirements, the thickness of the machine body, namely the size of the machine body in the front and back directions, is reduced by reducing the length of the blade of the cross-flow fan, the ultrathin design is realized, and the volume of the whole air purification device is further reduced.

Description

Air purifying device

Technical Field

The utility model relates to the technical field of household appliances, in particular to an air purification device.

Background

The air purifying device is a device which can carry out treatment work such as impurity removal, purification and the like on polluted air. The common air purification device in the kitchen is a range hood, and a fan in the range hood rotates at a high speed to form a negative pressure region in a certain space range above a stove, so that indoor oil fume gas is sucked into the range hood and oil fume is separated. The range hood is divided into an external circulation type range hood and an internal circulation type range hood, wherein the external circulation type range hood is used for extracting oil fume gas from the interior and finally exhausting the treated gas to the exterior through a pipeline, and the internal circulation type range hood is used for extracting the oil fume gas from the interior and finally exhausting the treated gas to the interior.

Because it has high backpressure performance to multi-wing centrifugal fan to preceding, it can maintain great amount of wind in the runner pressure interval of broad through the change of rotational speed, can also make the noise keep at lower level simultaneously, consequently the range hood generally adopts to multi-wing centrifugal fan to preceding at present. However, for an internal circulation type range hood with a small resistance of the internal flow path, the high back pressure performance of the forward multi-wing centrifugal fan is excessive. In order to achieve high-pressure and high-back-pressure performance, the volute of the multi-wing centrifugal fan is large in size, and further the overall size and weight of the range hood are large.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the air purification device which is small in size, light in weight and convenient to install.

According to the embodiment of the utility model, the air purification device comprises:

the air conditioner comprises a machine body, a fan and a fan, wherein an air outlet is formed at the upper part of the machine body, and an air inlet is formed at the lower part of the machine body;

the cross-flow fan is arranged in the machine body and positioned between the air outlet and the air inlet; the blades of the cross-flow fan extend along the front and rear direction of the machine body.

According to the air purification device provided by the embodiment of the utility model, the cross-flow fan is adopted and is arranged in the machine body along the front and back directions of the machine body, so that the weight of the whole air purification device can be reduced by virtue of the advantages of large air volume and small volume of the cross-flow fan, the axial length of the cross-flow fan is not limited, the length of the blades can be arbitrarily selected according to different requirements, the thickness of the machine body, namely the size of the machine body in the front and back directions, is reduced by reducing the length of the blades of the cross-flow fan, the ultrathin design is realized, and the volume of the whole air purification device is further reduced.

According to one embodiment of the utility model, the axial dimension of the crossflow blower is smaller than its radial dimension.

According to an embodiment of the present invention, the air inlet is formed on a bottom surface and/or a side wall of the housing.

According to an embodiment of the present invention, the housing is provided with a cover plate capable of opening and closing the air inlet and/or the air outlet.

According to an embodiment of the utility model, the cross-flow fan further comprises a fan driving part for driving the cross-flow fan to rotate, the machine body is provided with a driving part corresponding to the cover plate, and the driving part is linked with the fan driving part and is used for driving the cover plate to open and close.

According to an embodiment of the present invention, in a case where the side wall of the housing is formed with the air inlet, the cover plate is rotatably coupled to an upper edge of the air inlet.

According to one embodiment of the utility model, a volute is arranged in the machine body to divide the internal space of the machine body into an air inlet channel and an air outlet channel, the cross-flow fan is communicated with the air inlet through the air inlet channel, and the cross-flow fan is communicated with the air outlet through the air outlet channel; the extending direction of the blades is parallel to the front and back direction of the machine body, or the extending direction of the blades forms an included angle smaller than 30 degrees with the front and back direction of the machine body.

According to one embodiment of the utility model, an air purifying piece is arranged in the air inlet channel and/or the air outlet channel.

According to one embodiment of the present invention, the air inlet and/or the air outlet is provided with a protection member, and the protection member is provided with a plurality of ventilation holes.

According to one embodiment of the utility model, the air purification device is a range hood.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the cross-flow fan is arranged in the machine body along the front-back direction of the machine body, so that the weight of the whole air purification device can be reduced by means of the advantages of large air volume and small volume of the cross-flow fan, the length of the cross-flow fan in the axial direction can be freely selected according to different requirements on the basis of the characteristic that the axial length of the cross-flow fan is not limited, the thickness of the machine body, namely the size of the machine body in the front-back direction, is reduced by reducing the length of the blades of the cross-flow fan, the ultrathin design is realized, and the volume of the whole air purification device is reduced.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an air purification apparatus (without a crossflow blower) provided by an embodiment of the present invention;

FIG. 2 is one of the schematic perspective views of an air cleaning apparatus (with a crossflow blower) provided by an embodiment of the present invention;

FIG. 3 is a second schematic perspective view of an air cleaning apparatus (with a cross-flow fan) according to an embodiment of the present invention;

FIG. 4 is a third schematic perspective view of an air cleaning apparatus (with a crossflow blower) according to an embodiment of the present invention;

FIG. 5 is one of schematic longitudinal sectional views of an air purification apparatus provided in an embodiment of the present invention;

FIG. 6 is a second schematic longitudinal sectional view of an air purification apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic view of the cross-flow fan, volute, and air cleaning member according to an embodiment of the present invention.

Reference numerals:

100. a body; 101. an air inlet; 102. an air outlet; 103. an air inlet channel; 104. an air outlet channel;

200. a cross-flow fan; 300. a cover plate; 400. a volute; 500. an air purifying member;

600. a fan driving member.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 4, an embodiment of the present invention provides an air cleaning apparatus, which includes a body 100 and a cross-flow fan 200 disposed in the body 100; an air outlet 102 is formed at the upper part of the machine body 100, and an air inlet 101 is formed at the lower part of the machine body 100; the cross flow fan 200 is located between the air inlet 101 and the air outlet 102 of the main body 100, and blades of the cross flow fan 200 extend in a front-rear direction of the main body 100, that is, a length direction of the blades of the cross flow fan 200 is the front-rear direction. In the description, "extend in the front-rear direction of the body 100," front "generally refers to a direction toward the user, and" rear "generally refers to a direction away from the user.

Compared with a forward multi-wing centrifugal fan, the cross-flow fan 200 has larger air volume and smaller whole machine weight under the same noise volume, so the air purification device can obviously reduce the whole machine weight by adopting the cross-flow fan 200 to replace the multi-wing centrifugal fan. In addition, since the cross flow fan 200 is installed in the body 100 in the front-rear direction of the body 100 in the present embodiment, that is, the blades of the cross flow fan 200 extend from the front side of the body 100 to the rear side of the body 100, but it is known in the art that the axial length of the cross flow fan 200 is not limited, and the length of the blades may be arbitrarily selected according to different requirements, the air cleaning apparatus may reduce the thickness of the body 100, that is, the size of the body 100 in the front-rear direction by reducing the length of the blades of the cross flow fan 200.

To sum up, the air purification apparatus of the present invention adopts the cross flow fan 200, and the cross flow fan 200 is installed in the body 100 along the front-rear direction of the body 100, so that the weight of the entire air purification apparatus can be reduced by virtue of the advantages of large air volume and small volume of the cross flow fan 200 itself, and the thickness of the body 100, that is, the size of the body 100 in the front-rear direction, can be reduced by reducing the length of the blades of the cross flow fan 200 to realize an ultra-thin design based on the characteristic that the axial length of the cross flow fan 200 is not limited, and the length of the blades can be arbitrarily selected according to different requirements, thereby reducing the volume of the entire air purification apparatus.

The air purification device in this embodiment may be, but is not limited to, a range hood, and hereinafter, the air purification device is a range hood that is commonly used in a kitchen, for example, as shown in fig. 4, a fan driving member 600 is further disposed in the machine body 100, and the fan driving member 600 is used for driving the cross flow fan 200 to rotate. Specifically, fan drive 600 includes a motor that may be coupled to crossflow blower 200 either directly or through a transmission to crossflow blower 200. Wherein, the transmission mechanism can be but not limited to a belt pulley mechanism or a gear chain mechanism. Taking the belt pulley mechanism as an example, the belt pulley mechanism comprises a driving wheel, a driven wheel and a belt, the driving wheel is fixed on an output shaft of the motor, the driven wheel is fixed on a rotating shaft of the cross-flow fan 200, and the driving wheel is in transmission connection with the driven wheel through the belt. Therefore, after the motor is started, the driving wheel synchronously rotates along with the motor, and the driving wheel can rotate through the belt and the driven wheel, so that the cross-flow fan 200 fixedly connected with the driven wheel is driven to rotate. Since the gear chain mechanism is mounted in a similar manner to the belt pulley mechanism, it will not be described in detail here. Although the aerodynamic performance of the crossflow blower 200 can be improved by the motor being indirectly connected to the crossflow blower 200 by means of a transmission, the risk of overall vibrations is increased, compared to the case where the motor is directly connected to the crossflow blower 200. Therefore, in the actual production process, a designer can select the connection mode of the motor according to the emphasis point of the actual requirement of a user.

As shown in fig. 4, 6 and 7, the axial dimension of the cross-flow fan 200 is smaller than the radial dimension thereof to further reduce the thickness of the body 100 while securing the air volume. In addition, for the intake ports 101, in order to increase the amount of smoke absorption per unit time, the number of the intake ports 101 may be plural. For example, as shown in fig. 1, the machine body 100 is a rectangular parallelepiped structure, the machine body 100 is provided with three air inlets 101, one air inlet 101 is disposed on a left side wall of the machine body 100, another air inlet 101 is disposed on a right side wall of the machine body 100, and the remaining one air inlet 101 extends from a lower portion of a front side wall of the machine body 100 to a bottom surface of the machine body 100 and is substantially L-shaped. Of course, for the case of small amount of oil smoke, the air inlet 101 may be only disposed on the bottom surface or the side wall of the machine body 100. For the air outlets 102, the number of the air outlets 102 may be multiple, or may be only one. As shown in fig. 1, when the body 100 has a rectangular parallelepiped structure, the air outlet 102 is formed on the top surface of the body 100. Of course, the air outlet 102 may also be formed on the upper portion of the front side wall of the machine body 100 or extend from the upper portion of the front side wall of the machine body 100 to the top surface of the machine body 100. The shape of the body 100 may be, but is not limited to, a rectangular parallelepiped structure, and may also be, for example, a cylindrical structure or a special-shaped structure. Of course, for convenience of installation and space saving, the front and rear sidewalls of the body 100 may be flat plates parallel to the wall surface.

As shown in fig. 1 to 4, the housing 100 is provided with a cover 300 capable of opening and closing the air inlet 101 and/or the air outlet 102. Taking the air inlet 101 as an example, as shown in fig. 1, the machine body 100 is provided with three air inlets 101, wherein one air inlet 101 is disposed on a left side wall of the machine body 100, another air inlet 101 is disposed on a right side wall of the machine body 100, the remaining one air inlet 101 extends from a lower portion of a front side wall of the machine body 100 to a bottom surface of the machine body 100, and a cover plate 300 is disposed at each air inlet 101. The cover plate 300 may be rotatably connected to the machine body 100, or may be slidably disposed on the machine body 100. When the cover plate 300 is rotatably connected to the machine body 100, one end of the cover plate 300 may be rotatably fixed to the machine body 100 through a rotating shaft, and thus the size of the air inlet 101 may be adjusted by rotating the other end of the cover plate 300; similarly, when the cover plate 300 is slidably connected to the machine body 100, one of the cover plate 300 and the machine body 100 may be provided with a sliding slot, and the other may be provided with a sliding block, the sliding block may be slidably embedded in the sliding slot, so that the size of the air inlet 101 may be adjusted by pushing the cover plate 300. It can be seen that, in the embodiment, by arranging the cover plate 300 at the air inlet 101, not only the size of the air inlet 101 can be adjusted to change the air inlet volume, but also the air inlet 101 can be closed in the non-working state of the range hood, so that ash falling is reduced, and meanwhile, the aesthetic property is improved. The installation manner of the cover plate 300 at the air outlet 102 is similar to that described above, and is not described herein again.

It should be noted that, for the air inlet 101, as shown in fig. 1 and 2, when the cover 300 is rotatably connected to the machine body 100, the cover 300 located on the side wall of the machine body 100 is rotatably connected to the upper edge of the corresponding air inlet 101. The advantages of such an arrangement are: on one hand, after the air inlet 101 is opened by the cover plate 300, the oil smoke enters the air inlet 101 from the lower part of the cover plate 300, so that the oil smoke is prevented from being shielded by the cover plate 300 and cannot rapidly enter the machine body 100 through the air inlet 101; on the other hand, the smoke continuously enters the machine body 100 through the air inlet 101 under the driving of the cross flow fan 200, and the existence of the cover plate 300 can form a negative pressure area below the cover plate 300. Therefore, when the oil smoke generated in the cooking process rises to the cover plate 300, the oil smoke is blocked by the cover plate 300 and then rapidly enters the corresponding air inlet 101 along the cover plate 300.

In addition, in order to be able to automatically adjust the size of the air inlet 101 and/or the air outlet 102 according to the air volume of the cross flow fan 200, that is, the gear of the fan driving member, the air purification apparatus further includes a driving member corresponding to the cover plate 300, the driving member is installed on the body 100 and is linked with the fan driving member, and the driving member can control the cover plate 300 to open and close according to the gear of the fan driving member. Taking the air inlet 101 as an example, when the cover plate 300 at the air inlet 101 is rotatably connected to the machine body 100, the driving member may be a driving motor connected to the rotating shaft of the cover plate 300, and the driving motor is linked with the fan driving member; when the cover 300 at the air inlet 101 is slidably connected to the machine body 100, the driving member may be, but is not limited to, a micro cylinder or a lead screw mechanism. If the driving member is a micro cylinder, a cylinder body of the micro cylinder is fixed to the machine body 100, and a piston rod of the micro cylinder extends along the length direction of the air inlet 101 and is connected to the cover plate 300, so that the cover plate 300 can be driven to slide relative to the machine body 100 when the piston rod moves relative to the cylinder body, and the corresponding air inlet 101 is opened or closed. If the driving member is a screw mechanism, a sliding slot may be formed in the machine body 100, a sliding block may be fixed on the cover plate 300, the sliding block may be slidably embedded in the sliding slot, and meanwhile, the screw may be rotatably mounted on the machine body 100 and parallel to the sliding slot, and the sliding block is formed with a through hole for threading the screw, so that when the screw is driven by the screw motor to rotate, the sliding block will move along the screw, and further the cover plate 300 fixed thereto will slide relative to the machine body 100.

In order to improve safety and prevent a user from being injured by contacting the cross-flow fan 200 in operation by mistake, at least one of the air inlet 101 and the air outlet 102 is provided with a protection member, and the protection member is provided with a plurality of vent holes. Taking the air outlet 102 as an example, the protection member may be, but is not limited to, a protection grille or a protection net. Of course, to facilitate later cleaning and servicing of crossflow blower 200, a guard may be removably attached to body 100, such as by snapping or threading the guard onto body 100.

As shown in fig. 5, in order to make the flue gas flow directionally and increase the flow speed of the flue gas, a volute 400 is disposed in the machine body 100, the volute 400 divides the internal space of the machine body 100 into an air inlet channel 103 and an air outlet channel 104, the cross-flow fan 200 is communicated with the air inlet 101 through the air inlet channel 103, and the cross-flow fan 200 is communicated with the air outlet 102 through the air outlet channel 104. In order to increase the air intake speed and reduce the resistance, the extending direction of the air intake channel 103 and the extending direction of the air outlet channel 104 are both perpendicular to the extending direction of the blades, that is, the extending direction of the blades is parallel to the front-back direction of the machine body 100. Of course, the extending direction of the air inlet channel 103 and the extending direction of the air outlet channel 104 may also form an included angle smaller than 30 °, that is, the included angle between the extending direction of the blade and the front and back direction of the machine body 100 is smaller than 30 °. With the orientation shown in fig. 5 as a reference, the machine body 100 is a rectangular parallelepiped structure, the top surface of the machine body 100 is provided with an air outlet 102, and the left side wall, the right side wall and the bottom surface of the machine body 100 are provided with air inlets 101; two volutes 400 are installed in the machine body 100, the volute 400 positioned on the left upper side of the cross flow fan 200 is a double volute tongue volute 400, the volute 400 positioned on the right upper side of the cross flow fan 200 is a single volute tongue volute 400, the volute tongues of the two volutes 400 extend to the vicinity of the cross flow fan 200, an air outlet channel 104 is formed between the two volutes 400, three air inlet channels 103 are formed below the two volutes 400, one air inlet channel 103 is positioned on the left side of the cross flow fan 200, the other air inlet channel 103 is positioned on the right side of the cross flow fan 200, and the remaining air inlet channel 103 is positioned below the cross flow fan 200.

In addition, as shown in fig. 5 and 7, an air purifying member 500 is disposed in the air outlet channel 104 to separate oil smoke from the airflow in the air outlet channel 104. The air purifying member 500 may be a plate-shaped structure, for example, the air purifying member 500 is a plate-shaped activated carbon cotton. In order to increase the contact area of the air purifying member 500 with the air current, the air purifying member 500 may be an arc-shaped plate. As shown in fig. 7, the air cleaning member 500 is bent upward, and the curvature of the air cleaning member 500 is adapted to the curvature of the cross flow fan 200, the left and right ends of the air cleaning member 500 are respectively extended and fixed to the volutes 400 at both sides, and the front and rear ends of the air cleaning member 500 are respectively extended and fixed to the front and rear sidewalls of the machine body 100. In order to improve the purification efficiency, the air purification member 500 may also be disposed in the air inlet channel 103, and the installation manner and type of the air purification member 500 are similar to those of the air purification member 500 in the air outlet channel 104, which are not described herein again. Of course, the air cleaning member 500 may be provided only in the air intake passage 103. It should be noted that, in order to facilitate replacement of the air purifying member 500, the air purifying member 500 may be directly installed at the air inlet 101 and/or the air outlet 102.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the utility model. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. An air purification apparatus, comprising:

the cross-flow fan is arranged in the machine body and positioned between the air outlet and the air inlet; blades of the cross-flow fan extend along the front and back directions of the machine body;

the machine body is provided with a cover plate which can be opened and closed on the air inlet and/or the air outlet.

2. The air purification apparatus of claim 1, wherein the axial dimension of the crossflow blower is smaller than the radial dimension thereof.

3. The air cleaning apparatus according to claim 1, wherein the air inlet is formed at a bottom surface and/or a side wall of the housing.

4. The air cleaning device according to claim 1, further comprising a fan driving member for driving the cross-flow fan to rotate, wherein the body is provided with a driving member corresponding to the cover plate, and the driving member is linked with the fan driving member and used for driving the cover plate to open and close.

5. The air cleaning device according to claim 1, wherein the cover plate is rotatably coupled to an upper edge of the air inlet in a state that the air inlet is formed in the side wall of the body.

6. The air cleaning device according to any one of claims 1 to 3, wherein a volute is provided in the housing to divide the interior space of the housing into an air inlet channel and an air outlet channel, the cross-flow fan is communicated with the air inlet through the air inlet channel, and the cross-flow fan is communicated with the air outlet through the air outlet channel; the extending direction of the blades is parallel to the front and back direction of the machine body, or the extending direction of the blades forms an included angle smaller than 30 degrees with the front and back direction of the machine body.

7. The air purification device as claimed in claim 6, wherein an air purification member is provided in the air inlet channel and/or the air outlet channel.

8. The air cleaning device according to any one of claims 1 to 3, wherein the air inlet and/or the air outlet is provided with a shielding member, and the shielding member is provided with a plurality of ventilation holes.

9. An air cleaning device according to any one of claims 1 to 3, wherein the air cleaning device is a range hood.