Air curtain assembly and range hood

Abstract

The air curtain assembly comprises a cyclone seat and an air curtain fan, the cyclone seat comprises a lower cyclone seat and an upper cyclone seat, the lower cyclone seat is provided with an air curtain air outlet, the upper cyclone seat is provided with an air curtain air inlet, the upper cyclone seat is connected to the lower cyclone seat, and the air curtain fan is connected to the lower cyclone seat. An air curtain air duct is formed between the air curtain air inlet and the air curtain air outlet; the air curtain fan is installed on the cyclone upper base, and the air outlet end of the air curtain fan faces the air curtain air inlet. The utility model discloses an air curtain assembly and a range hood. And the cyclone seat is easier to demold, and a more complicated air curtain air duct can be realized at low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to an air curtain assembly and a range hood. Background Art

[0002] In existing range hood technology, the air curtain assembly forms an air curtain between the user and the stove as the range hood draws in oil fumes, preventing them from escaping. The air curtain assembly includes an air curtain range hood and a cyclone base. The cyclone base is equipped with an air curtain duct, and the air curtain fan is mounted on the cyclone base. The air curtain fan draws air and exhausts it downward through the duct on the cyclone base, forming an air curtain. In current air curtain assemblies, the air curtain duct is vertically arranged, forming a vertically downward air curtain. When the downward projection of the range hood's air curtain outlet is relatively close to the stove, the air discharged from the air curtain impacts the airflow formed by the oil fumes flowing toward the air intake, causing the oil fumes to escape and affecting the user's cooking environment. Utility Model Content

[0003] The purpose of the present utility model is to provide an air curtain assembly, which is used to solve the above technical problems.

[0004] The wind curtain assembly includes a cyclone seat and a wind curtain fan. The cyclone seat includes a cyclone lower seat and a cyclone upper seat. The cyclone lower seat is provided with a wind curtain outlet, and the cyclone upper seat is provided with a wind curtain inlet. The cyclone upper seat is connected to the cyclone lower seat, and a wind curtain air duct is formed between the wind curtain inlet and the wind curtain outlet; the wind curtain fan is installed on the cyclone upper seat, and its air outlet end faces the wind curtain inlet.

[0005] According to one embodiment of the present invention, a wind curtain outlet passage is provided on the cyclone lower seat, and a wind curtain inlet passage is provided on the cyclone upper seat, and the wind curtain inlet passage is communicated with the wind curtain outlet passage.

[0006] According to one embodiment of the present invention, a grille is provided in the air outlet passage of the air curtain, and the grille divides the air outlet passage of the air curtain into a plurality of small air outlet passages.

[0007] According to one embodiment of the present invention, the grille is tilted from top to bottom and from back to front, so that the air curtain outlet tilts outward to supply air.

[0008] According to one embodiment of the present invention, a first connecting hole is provided on one side of the cyclone upper seat, a first docking hole connected to the first connecting hole is provided on the corresponding side of the cyclone lower seat, and a first clip is provided on the lower surface of the other side of the cyclone upper seat, and the first clip is used to clip with the corresponding side of the cyclone lower seat.

[0009] According to one embodiment of the present invention, a second connecting hole for fixing the air curtain fan is provided on one side of the cyclone upper seat, and a second docking hole for connecting with the second connecting hole is provided on the corresponding side of the air curtain fan. A second clip is provided on the upper surface of the other side of the cyclone upper seat, and the second clip is clipped with the corresponding side of the air curtain fan.

[0010] According to one embodiment of the present invention, a negative ion module is further included. The negative ion module is arranged between the cyclone lower seat and the cyclone upper seat, and the emission end of the negative ion module extends into the wind curtain duct.

[0011] According to one embodiment of the present invention, the cyclone lower seat and the cyclone upper seat are provided with avoidance positions for avoiding the negative ion module. After the cyclone lower seat and the cyclone upper seat are connected, the negative ion module is fixed between the two.

[0012] According to one embodiment of the present invention, the negative ion emission module of the negative ion module is arranged in the front-to-back direction in the air curtain duct.

[0013] The present invention also provides a range hood, comprising an air curtain assembly and a range hood body as in any of the above embodiments, the range hood body having an electrical control cavity, the air curtain assembly being installed in the electrical control cavity, an air curtain air inlet corresponding to the air curtain fan being provided on the top plate of the electrical control cavity, and an air curtain air outlet corresponding to the air curtain air outlet of the lower seat of the cyclone being provided on the bottom plate of the electrical control cavity.

[0014] Compared with the prior art, the air curtain assembly of the present invention has the following advantages:

[0015] The utility model of the wind curtain assembly, the cyclone seat includes a cyclone lower seat and a cyclone upper seat

[0016] The wind curtain assembly of the present application, the cyclone seat includes a cyclone lower seat and a cyclone upper seat, and the cyclone lower seat can be processed as needed to make the part of the wind curtain air duct located on the cyclone lower seat tilted, so that the wind curtain wind discharged through the wind curtain outlet has a certain tilt direction. When the wind curtain wind discharged through the wind curtain exhaust outlet is tilted toward the user side, the wind curtain wind can be prevented from rushing against the air flow formed by the oil smoke flowing toward the air intake port of the range hood, and the wind curtain can still block the escape of oil smoke.

[0017] In the wind curtain assembly of the present application, the air duct of the cyclone upper seat is still arranged vertically, and the air outlet of the wind curtain fan can directly enter the part of the wind curtain duct located on the cyclone upper seat. When the air flow flows in the wind curtain duct of the wind curtain upper seat, there is no tilt, which can reduce the air flow resistance.

[0018] The wind curtain assembly of the present application has a wind curtain channel for changing the wind curtain outlet direction arranged on the cyclone lower seat, and the cyclone lower seat and the cyclone upper seat are arranged separately. When the cyclone lower seat and the cyclone upper seat are injection molded, the inclined core formed by the cyclone lower seat can be demolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the air curtain assembly of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the back of the wind curtain assembly;

[0021] Figure 3 This is an exploded view of the structure of the air curtain assembly of the present invention;

[0022] Figure 4 This is an exploded view of the structure of the air curtain assembly of the present invention from another direction;

[0023] Figure 5 is a cross-sectional view of the air curtain assembly of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the range hood of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of the range hood of the present invention from another direction;

[0026] Figure 8 It is a cross-sectional view of the range hood of the present invention.

[0027] In the figure: 1. Cyclone seat; 11. Cyclone lower seat; 111. Air curtain outlet channel; 112. Grille; 113. First docking hole; 12. Cyclone upper seat; 121. Air curtain inlet channel; 122. First connecting hole; 123. First buckle; 124. Second connecting hole; 125. Second buckle; 2. Air curtain fan; 21. Second docking hole; 3. Negative ion module; 4. Range hood body; 41. Air curtain inlet hole; 42. Air curtain outlet hole.

[0028] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] The utility model discloses an air curtain assembly for a range hood. Figures 1 to 5 The wind curtain assembly includes a cyclone seat 1 and a wind curtain fan 2; the cyclone seat 1 includes a cyclone lower seat 11 and a cyclone upper seat 12, the cyclone lower seat 11 is provided with a wind curtain outlet, the cyclone upper seat 12 is provided with a wind curtain inlet, the cyclone upper seat 12 is connected to the cyclone lower seat 11, and a wind curtain duct is formed between the wind curtain inlet and the wind curtain outlet; the wind curtain fan 2 is installed on the cyclone upper seat 12, and its air outlet end faces the wind curtain inlet. The wind curtain assembly of the present application, the cyclone seat 1 includes a cyclone lower seat 11 and a cyclone upper seat 12, and the cyclone lower seat 11 can be processed as needed to make the part of the wind curtain duct located on the cyclone lower seat 11 tilted, so that the wind curtain wind discharged through the wind curtain outlet has a certain tilt direction. Usually the air curtain wind discharged through the air curtain exhaust port is tilted toward the user side, which can avoid the air curtain wind from rushing against the air flow formed by the oil smoke flowing toward the air intake of the range hood, and the air curtain can still block the escape of the oil smoke.

[0034] In the wind curtain assembly of the present application, the air duct of the cyclone upper seat 12 is still arranged vertically, and the depth of the inclined part of the wind curtain duct on the entire cyclone seat 1 is relatively small. After the air outlet of the wind curtain fan 2 enters the part of the wind curtain duct located on the cyclone upper seat 12, when the air flow flows in the wind curtain duct of the wind curtain upper seat 12, since this part of the wind curtain duct is not inclined, the air flow flows directly downward, the wind resistance is relatively small, and the power consumption loss of the wind curtain fan 2 is relatively small, which can ensure the wind speed of the wind curtain wind discharged from the wind curtain outlet of the cyclone lower seat 11.

[0035] The wind curtain assembly of the present application has a wind curtain channel for changing the wind curtain outlet direction arranged on the cyclone lower seat 11, and the cyclone lower seat 11 and the cyclone upper seat 12 are arranged separately. When the cyclone lower seat 11 and the cyclone upper seat 12 are injection molded, the inclined core formed by the cyclone lower seat 11 can be demolded.

[0036] In this embodiment, the air curtain forms an air curtain between the user and the stove while cooking. To ensure the air curtain effectively blocks oil smoke, the width of the air curtain along the width of the range hood must be sufficiently large. Typically, when an air curtain assembly is applied to a range hood, one air curtain assembly is placed on each side of the range hood's electronic control chamber, with the left air curtain assembly corresponding to the left stove and the right air curtain assembly corresponding to the right stove. Therefore, when the air curtain assembly is in operation, the width of the air curtain formed by the air curtain must at least match the width of the stove on the corresponding side. Therefore, the cyclone upper seat 12 and the cyclone lower seat 11 are also extended as a long strip, extending along the width of the range hood.

[0037] The cyclone lower seat 11 and the cyclone upper seat 12 can be fixed in many ways, for example, they can be fixedly connected by means of a snap connection, a screw connection, a plug connection, etc. The connection method of the cyclone lower seat 11 and the cyclone upper seat 12 can be selected and designed according to actual needs, and is not specifically limited here. The air curtain fan 2 is installed on the cyclone upper seat 12, and the air curtain fan 2 and the cyclone upper seat 12 can also be connected in many ways, such as a screw connection, a snap connection, etc.

[0038] The type of air curtain fan 2 can be selected according to needs. Usually, in order to reduce noise, the air curtain fan 2 adopts a cross-flow fan wheel. Of course, in other embodiments, the air curtain fan 2 can also adopt an axial flow fan wheel, a centrifugal fan wheel, etc. The shape and size of the air curtain air inlet are adapted to the air outlet end of the air curtain fan 2. By making the air outlet end of the air curtain fan 2 face the air curtain air inlet, the air curtain fan 2 can blow the air into the air curtain air duct through the air curtain air inlet, and after rectification and guidance, it flows out from the air curtain outlet to form an air curtain to prevent the escape of oil smoke.

[0039] The wind curtain assembly of the present invention arranges the wind curtain air inlet on the cyclone upper seat 12 and the wind curtain air outlet on the cyclone lower seat 11. The split cyclone upper seat 12 and the cyclone lower seat 11 enclose a wind curtain duct to form a wind curtain. Compared with arranging the wind curtain duct on the one-piece cyclone seat 1, the cyclone seat 1 is easier to demold, and a more complex wind curtain duct can be realized at a low cost. An inclined grille can be arranged on the cyclone lower seat 11 to tilt the air outlet direction of the wind curtain to improve the oil fume adsorption effect.

[0040] Please refer to Figures 3 to 5 In the wind curtain assembly of the present invention, a wind curtain outlet channel 111 is provided on the cyclone lower seat 11, and a wind curtain inlet channel 121 is provided on the cyclone upper seat 12. The wind curtain inlet channel 121 is connected to the wind curtain outlet channel 111.

[0041] In this embodiment, a wind curtain outlet channel 111 is provided on the cyclone lower seat 11, and a wind curtain inlet channel 121 is provided on the cyclone upper seat 12, that is, a part of the wind curtain duct is formed on the cyclone lower seat 11, and the other part is formed on the cyclone upper seat 12, and the position and size of the wind curtain outlet channel 111 on the cyclone lower seat 11 and the wind curtain inlet channel 121 of the cyclone upper seat 12 can be designed according to actual needs, so as to facilitate the design of wind curtain ducts of special shapes to meet the flexibility and diversity of the product.

[0042] According to one embodiment of the present invention, please refer to Figures 3 to 5 The air curtain assembly of the present invention includes a grille within the air curtain outlet duct 111, which divides the air curtain outlet duct 111 into several smaller outlet ducts. The grille is integrally injection-molded with the cyclone lower seat 11. By providing the grille within the air curtain outlet duct 111, the airflow from the air curtain inlet duct 121 is dispersed and rectified by the grille after entering the air curtain outlet duct 111, thereby ensuring a more concentrated and stable airflow. Furthermore, the inclination of the grille can be adjusted to reflect the inclination of the wind on the air curtain.

[0043] Please refer to Figures 3 to 5 The grille of the air curtain assembly of the present invention is tilted from top to bottom and from back to front, so that the air curtain outlet is tilted outward to deliver air. This grille can also change the direction of the air outflow from the air curtain outlet channel 111, so that the air flow is blown out obliquely through the grille, forming an outward-facing air curtain. In this way, the air curtain wind will not impact the air flow formed by the oil smoke flowing toward the air intake of the range hood, and can also prevent the oil smoke from escaping, thereby enhancing the oil smoke extraction effect of the range hood.

[0044] Please refer to Figures 2 to 4 In the wind curtain assembly of the present invention, a first connecting hole 122 is provided on one side of the cyclone upper seat 12, and a first docking hole 113 connected to the first connecting hole 122 is provided on the corresponding side of the cyclone lower seat 11. A first clip 123 is provided on the lower surface of the other side of the cyclone upper seat 12, and the first clip 123 is used to clip with the corresponding side of the cyclone lower seat 11.

[0045] In this embodiment, the number of the first connecting hole 122 and the first docking hole 113 can be set to one or more, and is not specifically limited here. The air curtain assembly also includes a first locking member, which passes through the first connecting hole 122 and the first docking hole 113 and locks the cyclone upper seat 12 and the cyclone lower seat 11. The first locking member can be a screw or a rivet. One side and the other side of the cyclone upper seat 12 can specifically be the front and back sides, that is, the first connecting hole 122 and the first buckle 123 are respectively provided on the front and back sides of the cyclone upper seat 12. By connecting one side of the cyclone upper seat 12 and the cyclone lower seat 11 by a locking member and the other side by a buckle, the connection between the two is made more convenient and easy to operate while ensuring the reliable connection between the cyclone upper seat 12 and the cyclone lower seat 11.

[0046] Please refer to Figures 2 to 4 In the wind curtain assembly of the present invention, a second connecting hole 124 for fixing the wind curtain fan 2 is provided on one side of the cyclone upper seat 12, and a second docking hole 21 for connecting with the second connecting hole 124 is provided on the corresponding side of the wind curtain fan 2. A second clip 125 is provided on the upper surface of the other side of the cyclone upper seat 12, and the second clip 125 is clipped with the corresponding side of the wind curtain fan 2.

[0047] In this embodiment, the number of the second connecting hole 124 and the second docking hole 21 can be set to one or more, and is not specifically limited here. The wind curtain assembly also includes a second locking member, which passes through the second connecting hole 124 and the second docking hole 21 and locks the connection between the cyclone upper seat 12 and the wind curtain fan 2. The second locking member can be a screw or a rivet. One side and the other side of the cyclone upper seat 12 can specifically be the front and back sides, that is, the second connecting hole 124 and the second buckle 125 are respectively provided on the front and back sides of the cyclone upper seat 12. By connecting the cyclone upper seat 12 and the wind curtain fan 2 on one side by a locking member and the other side by a buckle, the connection between the two is made more convenient and easy to operate while ensuring the reliable connection between the cyclone upper seat 12 and the cyclone lower seat 11.

[0048] In addition, the first clip 123 and the second clip 125 are both set on the cyclone upper seat 12, so that the clip structure is concentrated on one component, and only docking holes are set on the cyclone lower seat 11 and the wind curtain fan 2, which can simplify the structure of the cyclone lower seat 11 and the wind curtain fan 2 and reduce the manufacturing cost of the entire wind curtain assembly.

[0049] According to one embodiment of the present invention, please refer to Figures 1 to 5The air curtain assembly of the present invention also includes a negative ion module 3, which is positioned between the cyclone lower seat 11 and the cyclone upper seat 12, with its emission end extending into the air curtain duct. This arrangement of the negative ion module 3 between the cyclone lower seat 11 and the cyclone upper seat 12 simplifies its mounting structure while ensuring a secure installation of the negative ion module 3 and allows the negative ion module 3 to be closer to the air curtain duct.

[0050] By extending the emitting end of the negative ion module 3 into the air curtain duct, the negative ion module 3 can release negative ions into the air curtain duct through the emitting end. After the air is discharged from the air curtain outlet, these negative ions combine with the tiny particles in the oil smoke, causing them to aggregate into larger particles, making it easier to be captured by the filter of the range hood or naturally settle to the ground, effectively reducing the concentration of oil smoke. Negative ions can also combine with harmful gases such as carbon monoxide and sulfur dioxide in the air, and through the action of the electric field, they are deposited or adsorbed on the surface of the negative ion source, thereby purifying the kitchen air. In addition, negative ion technology can decompose odor molecules, gather odors together by releasing negative ions, accelerate their decomposition, adsorption and precipitation, and make the kitchen air fresher. By adsorbing oil smoke and odor molecules, the negative ion module 3 reduces the pollution of these pollutants to the internal filter of the range hood, thereby reducing the number of times the filter is cleaned and replaced, which helps to extend the service life of the range hood.

[0051] Please refer to Figures 3 to 5 In the air curtain assembly of the present invention, the cyclone lower seat 11 and the cyclone upper seat 12 are provided with a clearance position for the negative ion module 3. After the cyclone lower seat 11 and the cyclone upper seat 12 are connected, the negative ion module 3 is fixed between the two. In this way, the structure between the cyclone lower seat 11, the cyclone upper seat 12, and the negative ion module 3 can be made more compact, reducing the thickness of the entire cyclone seat 1, making the air curtain assembly as a whole more compact and lightweight. Moreover, after the cyclone lower seat 11 and the cyclone upper seat 12 are connected, the negative ion module 3 is fixed between the two, which can further ensure the installation stability of the negative ion module 3.

[0052] Please refer to Figures 1 to 5 In the air curtain assembly of the present invention, the negative ion module 3's negative ion emission module is arranged along the front-to-back direction within the air curtain duct. This arrangement increases the negative ion retention time within the air curtain duct, thereby increasing the negative ion concentration in the air curtain, improving the overall range hood fume absorption and odor elimination effectiveness.

[0053] Please refer to Figures 6 to 8The present invention also provides a range hood, comprising an air curtain assembly and a range hood body 4 as in any of the above embodiments, the range hood body 4 having an electric control cavity, the air curtain assembly being installed in the electric control cavity, the top plate of the electric control cavity being provided with an air curtain inlet 41 corresponding to the air curtain fan 2, the bottom plate of the electric control cavity being provided with an air curtain outlet 42 corresponding to the air curtain outlet of the cyclone lower seat 11; since the present range hood adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here. The range hood body 4 can have many shapes and structures, which are not specifically limited here. By installing the air curtain assembly in the electric control cavity of the range hood body 4, the air curtain fan 2 can introduce the airflow outside the range hood from the air curtain inlet 41, which flows through the air outlet end, the air curtain duct, and the air curtain outlet of the air curtain fan 2 in sequence, and finally blows it out of the range hood from the air curtain outlet 42 to form a wind curtain. The shape, size and position of the air curtain inlet 41 and the air curtain outlet 42 can be designed according to usage requirements and are not specifically limited here.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air curtain assembly, characterized in that: include: A cyclone seat (1) comprises a cyclone lower seat (11) and a cyclone upper seat (12), wherein the cyclone lower seat (11) is provided with a wind curtain air outlet, the cyclone upper seat (12) is provided with a wind curtain air inlet, the cyclone upper seat (12) is connected to the cyclone lower seat (11), and a wind curtain air duct is formed between the wind curtain air inlet and the wind curtain air outlet; An air curtain fan (2) is installed on the cyclone upper seat (12), with its air outlet facing the air curtain inlet.

2. The air curtain assembly according to claim 1, characterized in that: The cyclone lower seat (11) is provided with a wind curtain outlet channel (111), and the cyclone upper seat (12) is provided with a wind curtain inlet channel (121), and the wind curtain inlet channel (121) is communicated with the wind curtain outlet channel (111).

3. The air curtain assembly according to claim 2, characterized in that: A grille (112) is provided in the air curtain outlet passage (111), and the grille (112) divides the air curtain outlet passage (111) into a plurality of small outlet passages.

4. The air curtain assembly according to claim 3, characterized in that: The grille (112) is arranged to tilt from top to bottom and from back to front, so that the air curtain outlet tilts outward to supply air.

5. The air curtain assembly according to claim 1, wherein: A first connecting hole (122) is provided on one side of the cyclone upper seat (12), and a first docking hole (113) connected to the first connecting hole (122) is provided on the corresponding side of the cyclone lower seat (11). A first clip (123) is provided on the lower surface of the other side of the cyclone upper seat (12), and the first clip (123) is used to clip with the corresponding side of the cyclone lower seat (11).

6. The air curtain assembly according to claim 1, characterized in that A second connecting hole (124) for fixing the air curtain fan (2) is provided on one side of the cyclone upper seat (12); a second docking hole (21) for connecting with the second connecting hole (124) is provided on the corresponding side of the air curtain fan (2); a second clip (125) is provided on the upper surface of the other side of the cyclone upper seat (12); and the second clip (125) is clipped with the corresponding side of the air curtain fan (2).

7. The air curtain assembly according to claim 1, characterized in that It also includes a negative ion module (3), which is arranged between the cyclone lower seat (11) and the cyclone upper seat (12), and its emission end extends into the wind curtain air duct.

8. The air curtain assembly according to claim 7, characterized in that: The cyclone lower seat (11) and the cyclone upper seat (12) are provided with avoidance positions for avoiding the negative ion module (3); after the cyclone lower seat (11) and the cyclone upper seat (12) are connected, the negative ion module (3) is fixed between the two.

9. The air curtain assembly according to claim 7, characterized in that: The negative ion emission module of the negative ion module (3) is arranged in the front-to-back direction in the air duct of the air curtain.

10. A range hood, using the air curtain assembly according to any one of claims 1 to 9, characterized in that: The range hood body (4) comprises a range hood body (4), the range hood body (4) having an electric control chamber, the air curtain assembly being installed in the electric control chamber, the top plate of the electric control chamber being provided with an air curtain air inlet hole (41) corresponding to the air curtain fan (2), and the bottom plate of the electric control chamber being provided with an air curtain air outlet hole (42) corresponding to the air curtain air outlet of the cyclone lower seat (11).

Images