Air duct structure and air supply device

Abstract

The application relates to an air outlet structure and an air supply device. The air outlet structure comprises a shell and a filter piece. The shell is surrounded by an air duct and has a first air inlet part which is in communication with the outside and the air duct and is arranged around a first direction. The filter piece is arranged in the air duct and is arranged around the first direction. The filter piece is arranged on the path of air entering the air duct from the first air inlet part. According to the application, the filter piece is arranged in the shell. When air enters the air duct from the outside, the air is filtered by the filter piece, the air cleanliness is improved, and the cleaning frequency of the air supply device is greatly reduced. Moreover, the first air inlet part and the filter piece are both arranged around the first direction. The air is filtered by the filter piece in the thickness direction of the filter piece after entering the air duct from the first air inlet part in a circumferential air inlet mode. Even if a filter piece with a large thickness is arranged, the size of the air supply device in the air supply direction is not increased, which is helpful to realize the miniaturization of the air supply device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to an air duct structure and an air supply device. BACKGROUND

[0002] The air supply device includes a fan, a purifier, a warm air blower, etc. The air supply principle of the air supply device is that external air enters its interior and is quickly blown out of the air outlet of the air supply device under the action of the internal fan. Since the external air carries dust into the interior of the air supply device, the fan blades need to be cleaned regularly, and the blowing is not clean, so that clean and healthy air cannot be obtained. SUMMARY

[0003] The present application proposes an air duct structure and an air supply device to solve the problem that the fan blades of the existing air supply device need to be cleaned regularly due to dust entering the interior, and clean air cannot be supplied. The air duct structure and the air supply device have the technical effects of filtering dust and transporting clean air.

[0004] An air duct structure comprises:

[0005] A housing is formed to enclose an air duct and has a first air inlet portion communicating with the outside and the air duct, the first air inlet portion being arranged around a first direction;

[0006] A filter is located in the air duct and arranged around the first direction, and the filter is located on the path of air entering the air duct from the first air inlet portion.

[0007] In one of the embodiments, the housing comprises a wind guide cylinder and an air inlet assembly, the air inlet assembly is arranged at one end of the wind guide cylinder in the first direction, and the two together enclose the air duct;

[0008] The air inlet assembly is provided with a first air inlet hole, the first air inlet hole is arranged around the first direction, and the first air inlet hole is configured to form the first air inlet portion.

[0009] In one of the embodiments, the air inlet assembly comprises a cover body and an air inlet grille, the air inlet grille is arranged around the first direction, the air inlet grille is provided with the first air inlet hole, and the filter is arranged on the air inlet grille and covers at least part of the first air inlet hole;

[0010] The cover body covers one end of the air inlet grille in the first direction, and the other end of the air inlet grille in the first direction is matched with the wind guide cylinder.

[0011] In one of the embodiments, the air inlet grille and the wind guide cylinder are detachably matched.

[0012] In one of the embodiments, the first air inlet hole on the air inlet grille is configured to be controllably openable and closable.

[0013] In one of the embodiments, the housing further has a second air inlet portion configured to be controllably openable and closable, and when opened, to communicate the outside with the air duct.

[0014] In one of the embodiments, the housing comprises a duct having a second air inlet hole configured to form the second air inlet portion, and an openable and closable member.

[0015] The openable and closable member is arranged on the duct and capable of opening and closing the second air inlet hole.

[0016] In one of the embodiments, the openable and closable member is configured to be movably arranged on the duct between a first position and a second position.

[0017] The openable and closable member has a matching hole, when the openable and closable member is in the first position, the matching hole at least partially overlaps with the second air inlet hole, and when the openable and closable member is in the second position, the matching hole is misaligned with the second air inlet hole.

[0018] In one of the embodiments, the openable and closable member is arranged in the duct, the openable and closable member has a knob, and the duct is provided with a limiting slot, the knob is operable to move along the limiting slot to open and close the second air inlet hole.

[0019] In one of the embodiments, the second air inlet hole is arranged around the first direction, and the openable and closable member has a cylindrical structure arranged around the first direction.

[0020] The openable and closable member is movably sleeved on the duct around the first direction.

[0021] In one of the embodiments, the filter has a size L in a direction perpendicular to the first direction, and 8mm≤L≤40mm is satisfied.

[0022] In one of the embodiments, the filter has a mesh structure.

[0023] In one of the embodiments, the air duct structure further comprises a mounting bracket arranged in the housing for mounting a fan.

[0024] An air supply device, characterized by comprising a fan and the air duct structure as described above, the fan being used to provide power to promote air from the outside of the housing into the air duct.

[0025] In one of the embodiments, the air supply device is a fan.

[0026] The aforementioned duct structure and air supply device incorporate a filter element within the housing. When air enters the duct from the outside, it is filtered by the filter element, improving air cleanliness and significantly reducing the frequency of cleaning the air supply device. Furthermore, both the first air inlet and the filter element are arranged circumferentially in the first direction. Through circumferential air intake, air is filtered by the filter element approximately along its thickness direction before entering the duct. Even with a thicker filter element, the size of the air supply device in the air supply direction is not increased, contributing to the miniaturization of the air supply device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the air supply device in some embodiments of this application;

[0028] Figure 2 for Figure 1 An exploded view of the air supply device shown;

[0029] Figure 3 for Figure 2 The diagram shows the dissected view of the air supply device.

[0030] Figure 4 This is a schematic diagram of the assembly of the air intake component and filter element in some embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the filter element in some embodiments of this application;

[0032] Figure 6 This is a partial structural schematic diagram of the air duct structure in some embodiments of this application;

[0033] Figure 7 for Figure 6 Detailed image of section I in the middle;

[0034] Figure 8 for Figure 6 A schematic diagram of the air guide tube in the shown air duct structure;

[0035] Figure 9 for Figure 6 A schematic diagram of the opening and closing components in the air duct structure shown;

[0036] Figure 10 for Figure 1 The diagram shows the operation of the air supply device in full purification mode.

[0037] Figure 11 for Figure 1 The diagram shows the operation of the air supply device in semi-purification mode.

[0038] Figure 12 for Figure 1The working schematic view of the air supply device in the single air outlet mode.

[0039] Explanation of reference numerals:

[0040] 1000, air supply device; 100, air duct structure; 10, shell; s, air duct; J1, first air inlet part; J2, second air inlet part; 11, air guide cylinder; 11a, limiting groove; k2, second air inlet hole; 12, air inlet assembly; 12a, cover body; 12b, air inlet grille; k1, first air inlet hole; 13, opening and closing part; k3, matching hole; 13a, push rod; C, air outlet part; 14, air outlet grille; 15, mounting bracket; 20, filter part; 30, base; 200, fan; 201, motor; 202, impeller; X, first direction. DETAILED DESCRIPTION

[0041] In order to make the above objectives, characteristics and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "fix", and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0047] For the problem that dust is easy to enter the inside of the air supply device during work and needs to be cleaned regularly, and clean air cannot be sent out, the present application found that a pie-shaped filter screen can be installed at the air inlet of the air supply device. In order to improve the filtering effect of the filter screen, the thickness of the filter screen needs to be set to a large value, which will cause the size of the air supply device in the air supply direction (corresponding to the thickness direction of the filter screen) to be too large, which is not conducive to the miniaturization of the structure of the air supply device. In order to solve the problem that dust is easy to enter the inside of the air supply device during work and needs to be cleaned regularly, and clean air cannot be sent out, and not to expand the size of the air supply device in the air supply direction, the present application provides a air duct structure and air supply device.

[0048] Figure 1 The structure of the air supply device 1000 in some embodiments of the present application is shown, Figure 2 The structure of the air supply device 1000 in some embodiments of the present application is shown, Figure 1 The exploded view of the air supply device 1000 is shown, Figure 3 The structure of the air supply device 1000 in some embodiments of the present application is shown, Figure 2An exploded sectional view of the air supply device 1000.

[0049] Referring to Figure 1 , Figure 2 and Figure 3 , the air supply device 1000 provided by the embodiments of the present application includes an air duct structure 100 and a fan 200. The air duct structure 100 is formed with an air duct s, and the fan 200 is configured to provide power for air to enter the air duct s from outside the air duct structure 100. Understandably, the air flows to the outside of the air duct structure 100 under the action of the fan 200, so as to realize air supply of the air supply device 1000.

[0050] The air supply device 1000 can be a fan, a heater, an air purifier, a dehumidifier, etc.

[0051] In Figure 1 the illustrated embodiments, the fan 200 is arranged in the air duct structure 100, so that the air supply device 1000 is compact. In other embodiments, the fan 200 can also be arranged outside the air duct structure 100, for example, the air supply structure further includes a cylindrical structure for mounting the fan 200, and the cylindrical structure is arranged at the air outlet side of the air duct structure 100.

[0052] The fan 200 is configured to accelerate the flow of air, so as to realize directional air supply of the air supply device 1000. The fan 200 can be, but is not limited to, an axial fan, a centrifugal fan, or a mixed flow fan. In an embodiment, the fan 200 includes an impeller 202 and a motor 201. The impeller 202 is mounted on the motor 201 and rotates under the action of the motor 201. When the impeller 202 rotates, air enters the air duct s of the air duct structure 100 from the outside. The impeller 202 is different according to the type of the fan 200, and can be an axial impeller, a centrifugal impeller, or a mixed flow impeller.

[0053] The air duct structure 100 is configured to guide the flow of air, and can filter the air entering itself, so as to output clean air and avoid dust in the air from falling on the blades of the impeller 202. The air duct structure 100 provided by the embodiments of the present application will be described in detail below.

[0054] Referring to Figures 1 to 3 , the air duct structure 100 provided by the embodiments of the present application includes a housing 10 and a filter 20. The housing 10 is formed with an air duct s and has a first air inlet portion J1 which is in communication with the outside and the air duct s, and the first air inlet portion J1 is arranged around the first direction X. The filter 20 is arranged in the air duct s and around the first direction X, and the filter 20 is located on the path of the air entering the air duct s from the first air inlet portion J1.

[0055] The first air inlet part J1 is a structure that provides a passage for air to enter the air duct s from the outside. The first air inlet part J1 can be an air inlet hole, an air inlet passage, or the like, as long as it can achieve air inlet. The first air inlet part J1 is arranged around the first direction X, including that the first air inlet part J1 is continuously arranged in the second direction around the first direction X (for example, the first air inlet part J1 is an annular hole), and including that the first air inlet part J1 is discontinuously arranged in the second direction around the first direction X (for example, the first air inlet part J1 includes a plurality of air inlet holes arranged at intervals in the second direction). The first air inlet part J1 is arranged around the first direction X, and air can enter the air duct s from the first air inlet part J1 at various positions in the second direction around the first direction X.

[0056] In actual application, the first direction X can be arranged parallel to the axial direction of the fan 200. The first air inlet part J1 is arranged at a position on the circumferential side wall of the shell 10 around the first direction X, and air enters the air duct s from the circumferential side of the shell 10.

[0057] The filter 20 is used to filter dust in the air, and can be, but is not limited to, a member made of porous filter material such as a filter screen, filter cotton, filter cloth, etc. The filter 20 is arranged around the first direction X, and at this time the filter 20 can have a circular shape, a square ring shape, a polygonal ring shape, etc., without limitation. Figure 5 The filter 20 is shown in the structure of some embodiments of the present application, and the filter 20 is arranged around the first direction X. Figure 5 In the embodiment shown, the filter 20 has a circular shape.

[0058] The filter 20 is located on the path of air entering the air duct s from the first air inlet part J1, that is, the air entering from the first air inlet part J1 must pass through the filter 20 to enter the air duct s. When the first air inlet part J1 is continuous in the second direction, the filter 20 can be continuously arranged in the second direction and block the first air inlet part J1. When the first air inlet part J1 is discontinuously arranged in the second direction, the filter 20 can be continuously arranged or discontinuously arranged in the second direction, as long as it can block the first air inlet part J1. In an embodiment, the first air inlet part J1 has a ring shape around the first direction X, the filter 20 has a ring shape around the first direction X, and the filter 20 blocks the first air inlet part J1.

[0059] In actual application, the thickness of the filter 20 can be set according to the air cleanliness requirement. The thickness of the filter 20 refers to the size L of the filter 20 in the direction perpendicular to the first direction X, and the air is filtered by the filter 20 in the thickness direction of the filter 20 after entering the air duct s from the first air inlet portion J1. The greater the thickness of the filter 20, the better the filtering effect, the less the cleaning frequency of the air supply device 1000, and the greater the air cleanliness. In actual application, the first direction X corresponds to the air supply direction of the air supply device 1000. Since the thickness direction of the filter 20 is perpendicular to the first direction X, even if the thickness of the filter 20 is increased to improve the filtering effect of the filter 20, the increased thickness of the filter 20 occupies the space in the circle of the filter 20, and does not increase the size of the air supply device 1000 in the air supply direction.

[0060] The air duct structure 100 described above is provided with the filter 20 in the housing 10. When the air enters the air duct s from the outside, it is filtered by the filter 20, the air cleanliness is improved, and the cleaning frequency of the air supply device 1000 is greatly reduced. Moreover, the first air inlet portion J1 and the filter 20 are both arranged around the first direction X. Through the circumferential air inlet mode, the air is filtered by the filter 20 in the thickness direction of the filter 20 after entering the air duct s from the first air inlet portion J1. Even if the filter 20 with a greater thickness is arranged, it will not increase the size of the air supply device 1000 in the air supply direction, which is helpful to realize the miniaturization of the air supply device 1000.

[0061] In some embodiments, in combination Figure 1 The size L of the filter 20 in the direction perpendicular to the first direction X satisfies: 8mm≤L≤40mm.

[0062] The size L is the thickness of the filter 20, and the first air inlet portion is located outside the filter 20 in the thickness direction of the filter 20. Specifically, the size L of the filter 20 can be 8mm, 10mm, 20mm, 30mm, 40mm, etc.

[0063] The greater the size L of the filter 20, the better the filtering effect, but the air resistance encountered by the air passing through the filter 20 will also increase, so the size of the filter 20 cannot be too large. The smaller the size L of the filter 20, the worse the filtering effect, so the size of the filter 20 cannot be too small.

[0064] When the size L of the filter 20 satisfies the above range, the filtering effect of the filter 20 is good, and the air resistance is small.

[0065] In some embodiments, the filter 20 is a mesh structure. The filter 20 includes a filter mesh, and specifically, the filter 20 can be an ULPA (Ultra Low Penetration Air Filter) filter or a HEPA (High Efficiency Particulate Air Filter) filter.

[0066] At this time, the filter 20 has a simple structure and good ventilation effect.

[0067] In some embodiments, referring to Figures 1 to 3 , the housing 10 includes the air duct 11 and the air inlet assembly 12. The air inlet assembly 12 is arranged at one end of the air duct 11 in the first direction X, and the air duct 11 and the air inlet assembly 12 together enclose the air duct s. The air inlet assembly 12 is provided with the first air inlet hole k1. The first air inlet hole k1 is arranged around the first direction X and forms the first air inlet part J1.

[0068] The air duct 11 is in a cylindrical shape, and specifically, can be a circular cylinder, a square cylinder, or a cylinder of other shapes. The air duct 11 is provided through at both ends in the first direction X. Optionally, the air duct 11 extends in the first direction X to be a straight cylinder. The specific structure of the air duct 11 is not limited in the present application.

[0069] The air inlet assembly 12 is arranged at one end of the air duct 11 in the first direction X. The part of the air inlet assembly 12 that encloses the air duct s and the part of the air duct 11 that encloses the air duct s together enclose the entire air duct s. The air inlet assembly 12 is provided with the first air inlet hole k1. The first air inlet hole k1 is arranged around the first direction X, and the first air inlet hole k1 serves as the first air inlet part J1.

[0070] The first air inlet hole k1 can be one, which is an annular hole arranged around the first direction X. The first air inlet hole k1 can be multiple, which are arranged around the first direction X at intervals. The specific arrangement and structure of the first air inlet hole k1 are not limited in the present application.

[0071] At this time, the structure of the housing 10 is simple, and the preparation cost is low.

[0072] In some embodiments, referring to Figure 4 , Figure 4As shown in the assembly diagram of the air inlet assembly 12 and the filter 20 in some embodiments of the present application, the air inlet assembly 12 includes a cover 12a and an air inlet grille 12b, the air inlet grille 12b is arranged around the first direction X, the air inlet grille 12b is provided with first air inlet holes k1, the filter 20 is arranged on the air inlet grille 12b and covers at least part of the first air inlet holes k1. The cover 12a covers one end of the air inlet grille 12b in the first direction X, and the other end of the air inlet grille 12b in the first direction X is connected with the air duct 11.

[0073] The air inlet grille 12b is arranged in a cylindrical shape around the first direction X, and in a cross section perpendicular to the first direction X, the shape of the air inlet grille 12b can be matched with the shape of the air duct 11, facilitating seamless connection. For example, the air inlet grille 12b is a cylindrical shape, and the air duct 11 is a cylindrical shape, and the air inlet grille 12b is a square cylindrical shape, and the air duct 11 is a square cylindrical shape.

[0074] The connection mode of the air inlet grille 12b and the air duct 11 can be, but is not limited to, clamping, threaded connection, bonding, welding, hot melt connection, etc. The filter 20 and the air inlet grille 12b can be clamped, fastened, etc.

[0075] The cover 12a covers one end of the air inlet grille 12b away from the air duct 11, at this time, the cover 12a can be used to isolate the air duct s and the external environment. The cover 12a and the air inlet grille 12b can be connected, fastened, integrally formed, etc., and the specific connection mode is not limited.

[0076] The cover 12a can be configured to always isolate the air duct s and the external environment, for example, the cover 12a is a closed cover plate, and the cover plate covers one end of the air inlet grille 12b.

[0077] The cover 12a can also be configured to operatively isolate the air duct s and the external environment, for example, the cover 12a is provided with a ventilation opening and a cover part operatively covering the ventilation opening. When it is necessary to isolate the air duct s and the external environment, the cover part covers the ventilation opening, and when the air supply device 1000 works, all the air enters the air duct s from the first air inlet hole k1, and the air cleanliness is high. When it is not necessary to isolate the air duct s and the external environment, the cover part is opened to ventilate the buckle, and when the air supply device 1000 works, part of the air enters the air duct s from the first air inlet hole k1, and the other part enters the channel from the ventilation opening. It can be suitable for places with high air volume requirement and low air cleanliness requirement.

[0078] At this time, the air inlet assembly 12 is formed by the air inlet grille 12b and the cover 12a, and the structure is simple and easy to form.

[0079] In some embodiments, the air inlet grille 12b and the air duct 11 are detachably connected.

[0080] The air inlet grille 12b and the air duct 11 can be detachably connected by clamping, threaded connection or the like.

[0081] When the air inlet grille 12b and the air duct 11 are detachably connected, not only the filter 20 arranged on the air inlet grille 12b is convenient to maintain, but also the filter 20 can be removed for use in a place where there is no air filtering requirement but a large air volume is required.

[0082] In some embodiments, the first air inlet hole k1 on the air inlet grille 12b is configured to be controllably openable and closable.

[0083] When the first air inlet hole k1 is opened, air enters the air duct s after passing through the first air inlet hole k1 and the filter 20 in sequence, at this time the air is filtered by the filter 20, and the air supply device 1000 can supply clean air. When the first air inlet hole k1 is closed, air cannot enter the air duct s from the first air inlet hole k1, and the air supply device 1000 cannot supply clean air.

[0084] In order to realize the openable and closable of the first air inlet hole k1, a sleeve can be provided outside the air inlet grille 12b. When the sleeve is sleeved on the air inlet grille 12b, the first air inlet hole k1 is closed, and when the sleeve is removed, the first air inlet hole k1 is opened. The opening and closing scheme of the first air inlet hole k1 is not specifically limited in the present application.

[0085] In some embodiments, please refer to Figures 1 to 3 The shell 10 also has a second air inlet part J2, which is configured to be controllably openable and closable and is in communication with the outside and the air duct s when opened.

[0086] The second air inlet part J2 is a structure for providing a passage for air to enter the air duct s from the outside. The second air inlet part J2 can be an air inlet hole, an air inlet passage or the like, as long as it can realize air inlet. When the shell 10 includes the air duct 11, the second air inlet part J2 can be arranged on the air duct 11, and when the shell 10 includes the cover 12a, the second air inlet part J2 can also be arranged on the cover 12a (at this time, the air vent hole mentioned above on the cover 12a can be configured as the second air inlet part J2, and the air vent hole can be realized to be openable and closable through the cover part on the cover 12a).

[0087] The second air inlet part J2 is controllably openable and closable. In an example, the second air inlet part J2 includes an air inlet hole arranged on the air duct 11, and an opening cover is arranged on the second air inlet part J2. The opening cover is movably arranged on the air duct 11 and is operable to switch between a position of closing the air inlet hole and a position of opening the air inlet hole.

[0088] When the air supply device 1000 is used, the air supply device 1000 can have three working modes, i.e. full purification mode, half purification mode and large air volume mode. Figure 10The working schematic diagram of the air supply device 1000 in the full purification mode is shown. Figure 11 The working schematic diagram of the air supply device 1000 in the half purification mode is shown. Figure 12 The working schematic diagram of the air supply device 1000 in the single air outlet mode is shown.

[0089] In the full purification mode (as shown in Figure 10 , the second air inlet part J2 is closed, and air enters the air duct s from the first air inlet part J1. Since the air entering the air duct s is filtered by the filter 20, the air cleanliness is high, and the air supply device 1000 is suitable for use in places with high requirements for air quality.

[0090] In the half purification mode (as shown in Figure 11 , the second air inlet part J2 is opened, and part of the air enters the air duct s from the first air inlet part J1, and part of the air enters the air duct s from the second air inlet part J2. Since the air entering the air duct s is filtered by the filter 20 only partially, the air cleanliness is relatively low, but the second air inlet part J2 increases the air inlet area, and the air volume and air speed are improved. The air supply device 1000 is suitable for use in places with general requirements for air quality and high requirements for air volume.

[0091] In the single air outlet mode (as shown in Figure 12 , in an embodiment, the filter 20 can be removed, and the second air inlet part J2 is opened. At this time, air can enter from the first air inlet part J1 and the second air inlet part J2, the air inlet area is large, and the air volume and air speed are maximized. The air supply device 1000 is suitable for use in places with large air volume and no air purification requirements.

[0092] In the single air outlet mode, in another embodiment, the first air inlet part J1 can be closed (which can be achieved by closing the first air inlet hole k1 mentioned above), and the second air inlet part J2 is opened. Air enters only from the second air inlet part J2, and air is not filtered. The air supply device 1000 is suitable for use in places with ordinary air volume and no air purification requirements.

[0093] At this time, through the setting of the openable and closable second air inlet part J2, multiple working modes of the air supply device 1000 can be realized to meet different user needs.

[0094] Figure 6 The partial structure schematic diagram of the air duct structure 100 is shown.

[0095] In some embodiments, referring to Figure 2 , Figure 3 and Figure 6 , the shell 10 includes a wind guide cylinder 11 and an opening and closing part 13. The wind guide cylinder 11 has a second air inlet hole k2 communicating with the outside and the air duct s, and the second air inlet hole k2 is configured to form the second air inlet part J2. The opening and closing part 13 is arranged on the wind guide cylinder 11 and can open and close the second air inlet hole k2.

[0096] Please refer to the above description of the air duct 11, which will not be repeated here.

[0097] The second air inlet hole k2 can be a circular hole, a square hole, etc. The second air inlet hole k2 can be one or multiple. When the second air inlet hole k2 is multiple, the multiple second air inlet holes k2 can be arranged at intervals around the first direction X. When the second air inlet hole k2 is one, the second air inlet hole k2 can be an annular hole around the first direction X. The specific arrangement and configuration of the second air inlet hole k2 are not limited in the present application.

[0098] The opening and closing member 13 is a component for opening and closing the second air inlet hole k2, which can be in the form of an opening and closing cover, an opening and closing block, an opening and closing piece, an opening and closing ring, etc. When the second air inlet hole k2 is multiple, one opening and closing member 13 can be provided for each second air inlet hole k2, or all second air inlet holes k2 can be simultaneously opened and closed by one opening and closing member 13.

[0099] The opening and closing member 13 can be configured to be rotatable and arranged on the air duct 11, and to open and close the second air inlet hole k2 during rotation. The opening and closing member 13 can also be configured to be movable and arranged on the air duct 11, and to open and close the second air inlet hole k2 during movement. The opening and closing member 13 can also be detachably arranged on the air duct 11, and when the opening and closing member 13 is detached from the air duct 11, the second air inlet hole k2 is opened, and when the opening and closing member 13 is arranged on the air duct 11, the second air inlet hole k2 is closed. The specific scheme of the opening and closing member 13 opening and closing the second air inlet hole k2 is not limited in the embodiments of the present application.

[0100] At this time, the second air inlet hole k2 configured as the second air inlet portion J2 is arranged on the air duct 11, and air enters from the circumference of the air duct 11, which is simple in structure and easy to implement.

[0101] In some embodiments, the opening and closing member 13 is configured to be movably arranged on the air duct 11 between a first position and a second position. The opening and closing member 13 has a matching hole k3, and when the opening and closing member 13 is in the first position, the matching hole k3 at least partially overlaps the second air inlet hole k2, and when the opening and closing member 13 is in the second position, the matching hole k3 is staggered with the second air inlet hole k2.

[0102] The opening and closing member 13 can be arranged outside the air duct 11 or inside the air duct. The opening and closing member 13 can move along the air duct 11. Optionally, a moving track is arranged on the air duct 11, and the opening and closing member 13 is movably arranged on the moving track. The moving direction of the opening and closing member 13 can be along the first direction X, around the first direction X, or intersecting the first direction X, which is not limited in particular.

[0103] When the matching hole k3 and the second air inlet hole k2 at least partially overlap, the matching hole k3 and the second air inlet hole k2 communicate the outside and the air duct s, and air can enter the air duct s from the area where the matching hole k3 and the second air inlet hole k2 overlap. When the matching hole k3 and the second air inlet hole k2 are staggered, air cannot flow between the second air inlet hole k2 and the matching hole k3, and thus cannot enter the air duct s.

[0104] When it is necessary to close the second air inlet hole k2, the opening and closing member 13 is moved to the second position, and air cannot enter the air duct s. When it is necessary to open the second air inlet hole k2, the opening and closing member 13 is moved to the first position, and air enters the air duct s through the area where the second air inlet hole k2 and the matching hole k3 overlap.

[0105] At this time, the opening and closing of the second air inlet hole k2 can be realized by moving the opening and closing member 13 on the air duct 11, which is simple to operate. Moreover, the opening and closing member 13 does not cause a large change in the appearance of the air duct structure 100 when opening and closing the second air inlet hole k2, which can reduce the space occupied by the air duct structure 100 and make the use of the air supply device 1000 more convenient.

[0106] Figure 7 The details at I are shown in the figure, Figure 6 The details at I are shown in the figure, Figure 8 The structure of the air duct 11 is shown in the figure, Figure 9 The structure of the opening and closing member 13 is shown in the figure.

[0107] In some embodiments, please refer to Figure 7 , Figure 8 and Figure 9 The opening and closing member 13 is arranged in the air duct 11, and the opening and closing member 13 has a toggle lever 13a. The air duct 11 is provided with a limiting groove 11a, and the toggle lever 13a is operable to move along the limiting groove 11a, so as to open and close the second air inlet hole k2.

[0108] The toggle lever 13a is arranged on the side surface of the opening and closing member 13 facing the air duct 11 and extends into the limiting groove 11a. The extending direction of the limiting groove 11a is consistent with the moving direction of the opening and closing member 13. When the opening and closing member 13 moves along the first direction X, the limiting groove 11a extends along the first direction X. When the opening and closing member 13 moves around the first direction X, the limiting groove 11a extends around the first direction X.

[0109] The limiting groove 11a has two limiting positions in the extending direction. When the toggle lever 13a is located at one of the limiting positions, the opening and closing member 13 is located at the first position, and the opening and closing member 13 opens the second air inlet hole k2. When the toggle lever 13a is located at the other limiting position, the opening and closing member 13 is located at the second position, and the opening and closing member 13 closes the second air inlet hole k2.

[0110] In actual operation, the opening and closing member 13 can be opened and closed by adjusting the position of the adjusting rod 13a in the limiting groove 11a, which is convenient to operate.

[0111] In some embodiments, referring to Figure 6 , the second air inlet k2 is arranged around the first direction X, and the opening and closing member 13 is in a cylindrical structure arranged around the first direction X, and the opening and closing member 13 is movably sleeved on the air duct 11 around the first direction X.

[0112] The opening and closing member 13 is in a cylindrical structure and is sleeved in or out of the air duct 11. When the opening and closing member 13 moves along the air duct 11 around the first direction X, the opening and closing member 13 can open and close the second air inlet k2. Understandably, the air duct 11 is also in a cylindrical structure.

[0113] At this time, the opening and closing member 13 and the air duct 11 are sleeved with each other, and the opening and closing member 13 can be installed without other fasteners, which is fast and convenient.

[0114] Understandably, referring to Figures 1 to 3 , in the embodiment of the present application, the shell 10 also has an air outlet C. After the air enters the air duct s from the outside through the first air inlet J1 and / or the second air inlet J2, it is finally blown out through the air outlet C. The air outlet C can be arranged around the first direction X or located on the first direction X, which is not limited in particular.

[0115] In an example, the air outlet C is an air outlet hole arranged on the shell 10. In another example, the shell 10 includes an air duct 11, an air inlet assembly 12 and an air outlet grille 14, the air outlet grille 14 is connected to one end of the air duct 11, the air inlet assembly 12 is connected to the other end of the air duct 11, and the air outlet grille 14 is provided with an air outlet hole as the air outlet C. The present application does not limit the arrangement of the air outlet C.

[0116] In some embodiments, referring to Figure 6 , the air duct structure 100 further includes a mounting bracket 15 arranged in the shell 10 for mounting the fan 200. When the shell 10 includes the air duct 11, the mounting bracket 15 can be mounted in the air duct 11. The mounting bracket 15 and the shell 10 can be integrally formed, or can be connected together by welding, fastening or the like. The mounting bracket 15 and the fan 200 can be fastened together. Specifically, the motor 201 of the fan 200 is mounted on the mounting bracket 15.

[0117] At this time, the mounting bracket 15 is arranged in the shell 10, which facilitates the installation of the fan 200.

[0118] In an embodiment of the present application, referring to Figures 1 to 3The air duct structure 100 comprises a housing 10 and a filter 20. The housing 10 comprises a duct 11, an air inlet assembly 12 and an opening and closing member 13. The air inlet assembly 12 comprises an air inlet grille 12b and a cover 12a. The air inlet grille 12b is arranged around the first direction X. The air inlet grille 12b is provided with first air inlet holes k1. The filter 20 is arranged on the air inlet grille 12b. The cover 12a covers one end of the air inlet grille 12b in the first direction X. The other end of the air inlet grille 12b in the first direction X is connected to the duct 11. The air inlet grille 12b is provided with first air inlet holes k1. The filter 20 is arranged on the inner side of the air inlet grille 12b and in the path of air entering the air duct s from the first air inlet holes k1. The duct 11 is provided with second air inlet holes k2. The opening and closing member 13 is movably arranged on the duct 11 and can open and close the second air inlet holes k2.

[0119] The air duct structure 100 and the air supply device 1000 provided by the embodiments of the present application are provided with the filter 20 in the housing 10. When air enters the air duct s from the outside, the air is filtered by the filter 20, the cleanliness of the air is improved, and the cleaning frequency of the air supply device 1000 is greatly reduced. Moreover, the first air inlet part J1 and the filter 20 are arranged around the first direction X. In the circumferential air inlet mode, the air is filtered by the filter 20 after entering the air duct s from the first air inlet part J1 along the thickness direction of the filter 20. Even if the filter 20 with a large thickness is arranged, the size of the air supply device 1000 in the air supply direction will not be increased, which is helpful to realize the miniaturization of the air supply device 1000.

[0120] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0121] The above-mentioned embodiments only express several embodiments of the present application. The description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An air duct structure characterized by, The shell (10) is formed with an air duct (s) and has a first air inlet part (J1) which is in communication with the outside and the air duct (s) and is arranged around the first direction (X). The filter member (20) is arranged in the air duct (s) and around the first direction (X) and is arranged on the path of air entering the air duct (s) from the first air inlet part (J1). The shell (10) further has a second air inlet part (J2) which is configured to be controllably opened and closed and is in communication with the outside and the air duct (s) when opened. The shell (10) comprises a duct (11) and an air inlet assembly (12) which is arranged at one end of the duct (11) in the first direction (X) and together with the duct (11) forms the air duct (s).

2. The air duct structure according to claim 1, wherein The air inlet assembly (12) is provided with a first air inlet hole (k1) which is arranged around the first direction (X) and forms the first air inlet part (J1). The air inlet assembly (12) comprises a cover (12a) and an air inlet grille (12b) which is arranged around the first direction (X) and is provided with the first air inlet hole (k1), and the filter member (20) is arranged on the air inlet grille (12b) and covers at least part of the first air inlet hole (k1).

3. The air duct structure according to claim 2, wherein The cover (12a) covers one end of the air inlet grille (12b) in the first direction (X), and the other end of the air inlet grille (12b) in the first direction (X) is connected with the duct (11). The air inlet grille (12b) is detachably connected with the duct (11).

4. The air duct structure according to claim 3, wherein The first air inlet hole (k1) on the air inlet grille (12b) is configured to be controllably opened and closed.

5. The air duct structure according to claim 3, wherein The shell (10) comprises a duct (11) and an opening and closing member (13), the duct (11) has a second air inlet hole (k2) which is in communication with the outside and the air duct (s) and forms the second air inlet part (J2).

6. The air duct structure according to any one of claims 1 to 5, characterized by The opening and closing member (13) is arranged on the duct (11) and can open and close the second air inlet hole (k2). The opening and closing member (13) is configured to be movably arranged on the duct (11) between a first position and a second position.

7. The air duct structure according to claim 6, wherein The opening and closing member (13) has a matching hole (k3), when the opening and closing member (13) is in the first position, the matching hole (k3) at least partially overlaps with the second air inlet hole (k2), and when the opening and closing member (13) is in the second position, the matching hole (k3) is staggered with the second air inlet hole (k2). ​ 8. The air duct structure according to claim 7, wherein The opening and closing member (13) is arranged in the air duct (11), the opening and closing member (13) has a rotating lever (13a), the air duct (11) is provided with a limiting groove (11a), the rotating lever (13a) is operable to move along the limiting groove (11a), so that the opening and closing member (13) opens and closes the second air inlet (k2).

9. The air duct structure according to claim 6, wherein The second air inlet (k2) is arranged around the first direction (X), and the opening and closing member (13) has a cylindrical structure arranged around the first direction (X). The opening and closing member (13) is movably sleeved on the air duct (11) around the first direction (X).

10. The air duct structure according to any one of claims 1 to 5, characterized by The size of the filter (20) in the direction perpendicular to the first direction (X) is L, and 8mm≤L≤40mm is satisfied.

11. The air duct structure according to any one of claims 1 to 5, characterized by The filter (20) has a mesh structure.

12. The air duct structure according to any one of claims 1 to 5, characterized by The air duct structure (100) further comprises a mounting bracket (15) arranged in the shell (10) for mounting a fan (200).

13. An air supply device characterized by comprising: The air duct structure (100) according to any one of claims 1-12 and a fan (200) for providing power to facilitate air entering the air duct (s) from the outside of the shell (10).

14. The air supply device according to claim 13, wherein The air supply device is a fan.

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