Range hood and dust collection device thereof

Abstract

The invention relates to a range hood and a dust collection device thereof, the dust collection device is arranged on a range hood body, and the dust collection device comprises a dust collection pipeline, a deposition assembly and a dust collection fan. One end of the dust collection pipeline is provided with a dust collection port; the deposition assembly is arranged in the dust collection pipeline, the deposition assembly and the side wall of the dust collection pipeline jointly define a dust collection cavity, and the deposition assembly is used for enabling dust entering the dust collection pipeline from the dust collection opening to be deposited in the dust collection cavity. The dust collection fan is arranged in the dust collection pipeline and located on the side, away from the dust collection opening, of the deposition assembly. Under the action of the dust collection fan, dust can be sucked into the deposition assembly from the dust collection opening, the deposition assembly enables the dust to be deposited in the dust collection cavity, and then the dust in the dust collection cavity is cleaned regularly. Through the arrangement of the dust suction device, the amount of dust entering the range hood body can be reduced, the service life of the range hood body is prolonged, and the cleaning frequency of the range hood body is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to range hoods and dust collection devices thereof. Background Art

[0002] When the range hood is working, the dust suction fan usually rotates to suck in the oil smoke. However, the dust suction fan not only sucks in the oil smoke, but also causes fly ash, dandruff, hair and other dust to be sucked into the range hood due to the increase in air flow rate. In addition, flour in the kitchen during cooking will generate dust, which is also sucked into the range hood as dust.

[0003] Dust that enters the range hood easily sticks to the dust suction fan and motor, and long-term accumulation will affect the life of the range hood. Summary of the invention

[0004] Based on this, it is necessary to provide a range hood and a dust collection device thereof to address the problem that dust entering the range hood easily sticks to the dust collection fan and the motor, and long-term accumulation will affect the life of the range hood.

[0005] A dust suction device is provided on a range hood body, the dust suction device comprising:

[0006] A dust suction pipe, one end of which is provided with a dust suction port;

[0007] a deposition assembly disposed in the dust collection duct, wherein the deposition assembly and a side wall of the dust collection duct jointly define a dust collection chamber, and the deposition assembly is used to deposit dust entering the dust collection duct in the dust collection chamber; and

[0008] The dust suction fan is arranged in the dust suction duct and is located on a side of the deposition component away from the dust suction port.

[0009] In one embodiment, the deposition assembly includes a dust hood, wherein the dust hood is provided with a first port at one end close to the dust suction port, and a second port at one end facing away from the dust suction port; the contour area of ​​the second port is smaller than the contour area of ​​the first port;

[0010] The dust collection hood is provided with one end of the first port connected to the inner circumferential surface of the dust collection duct;

[0011] The dust collecting hood defines the bottom of the dust collecting cavity.

[0012] In one embodiment, the inner cavity of the dust hood gradually narrows along the direction from the first port to the second port.

[0013] In one embodiment, the deposition assembly includes a first filter, the first filter is located on a side of the dust hood close to the dust suction fan, and the first filter is used to define a top wall of the dust collecting chamber.

[0014] In one embodiment, the first filter has a first cavity that is recessed toward one side of the dust suction port, and the cross-sectional profile of the first cavity gradually increases along the direction from the dust suction port to the dust suction fan.

[0015] In one embodiment, the deposition assembly includes a second filter, the second filter is located on a side of the first filter away from the dust cover, and the mesh number of the second filter is greater than the mesh number of the first filter.

[0016] In one embodiment, the second filter has a second cavity that is recessed toward one side of the first filter, and the cross-sectional profile of the second cavity gradually increases along the direction from the dust suction port to the dust suction fan.

[0017] In one embodiment, the dust suction duct has a dust inlet, the deposition assembly includes a baffle, and the dust inlet is located on a side of the dust suction cover close to the dust suction inlet;

[0018] When the dust suction fan is turned off, the baffle blocks the dust inlet;

[0019] When the dust suction fan is started, the baffle releases the dust inlet.

[0020] In one embodiment, the baffle is an elastic baffle, one end of which is connected to the inner circumference of the dust suction duct, and the elastic baffle can be elastically deformed under the suction force of the dust suction fan;

[0021] When the dust suction fan is started, the elastic baffle undergoes elastic deformation and the dust inlet is opened;

[0022] When the dust suction fan is turned off, the elastic baffle recovers its deformation and the dust inlet is closed.

[0023] In one embodiment, the dust suction device includes a controller and a smoke sensor, the smoke sensor is arranged at the dust suction port, the smoke sensor and the dust suction fan are respectively connected to the controller signal, the smoke sensor is used to detect the amount of smoke at the dust suction port, and the controller is used to control the opening and closing of the dust suction fan according to the amount of smoke detected by the smoke sensor.

[0024] In one embodiment, the dust suction device includes a push plate, which is connected to the controller signal, and the push plate can be extended and retracted along a first direction in the dust suction duct, and the first direction is perpendicular to the extension direction of the dust suction duct. The controller is used to control the extension and retraction of the push plate according to the amount of smoke detected by the smoke sensor, so as to change the air inlet area of ​​the dust suction duct through the push plate.

[0025] In one embodiment, the other end of the dust suction duct away from the dust suction port is an air outlet, the air outlet is provided with a third filter, the dust suction fan is arranged at one end of the dust suction duct close to the air outlet, and the dust suction fan is used to be installed on the ceiling.

[0026] A range hood comprises a range hood body and a dust suction device, wherein the dust suction device is arranged on at least one side of the range hood body.

[0027] In one of the embodiments, the dust suction port of the dust suction duct is located lower than the smoke intake port of the range hood body.

[0028] The range hood and its dust suction device can simultaneously turn on the dust suction fan in the dust suction duct when the range hood is working, and the dust is sucked from the dust suction port into the dust suction duct by the dust suction fan. At the same time, the dust suction fan is arranged on the side of the dust collecting chamber away from the dust suction port, so that the dust can be sucked from the dust suction port to the deposition component, and the dust can be deposited in the dust collecting chamber under the action of the deposition component, and then the dust in the dust collecting chamber can be cleaned regularly. That is, the amount of dust entering the range hood can be reduced by the arrangement of the dust suction device, thereby extending the life of the range hood. In addition, the dust suction duct is arranged on at least one side of the smoke collecting box, and can also suck in part of the smoke that the range hood cannot cover, thereby improving the smoke absorption effect. And for the same amount of smoke, since part of the smoke close to one side of the dust suction duct or escaping can be sucked into the dust suction duct, it is convenient to lower the gear of the range hood when in use, thereby reducing the noise of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic structural diagram of a range hood in one embodiment.

[0030] FIG. 2 is a schematic diagram of the structure of a deposition assembly in one embodiment.

[0031] Figure numerals: 10, range hood; 11, shell; 12, range hood body; 20, ceiling; 30, dust suction device; 31, dust suction duct; 311, dust suction port; 312, air outlet; 313, dust inlet; 32, deposition assembly; 321, dust hood; 3211, first port; 3212, second port; 322, first filter; 3221, first concave cavity; 323, second filter; 3231, second concave cavity; 324, baffle; 33, dust collecting cavity; 331, dust removal port; 34, dust suction fan; 35, hose; 37, smoke sensor; 38, third filter; 391, dust suction motor; 392, push plate; 393, controller. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a signal connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0038] Referring to FIG. 1 and FIG. 2 , an embodiment of the present application discloses a dust collecting device 30, which is disposed on the range hood body 12 and includes a dust collecting duct 31, a deposition assembly 32, and a dust collecting fan 34. One end of the dust collecting duct 31 has a dust collecting port 311; the deposition assembly 32 is disposed in the dust collecting duct 31, and the deposition assembly 32 and the side wall of the dust collecting duct 31 jointly define a dust collecting chamber 33, and the deposition assembly 32 is used to deposit dust entering the dust collecting duct 31 from the dust collecting port 311 in the dust collecting chamber 33. The dust collecting fan 34 is disposed in the dust collecting duct 31 and is located on a side of the deposition assembly 32 away from the dust collecting port 311.

[0039] In this way, when the range hood body 12 is working, the dust suction fan 34 in the dust suction duct 31 can be turned on at the same time, and the dust is sucked from the dust suction port 311 into the dust suction duct 31 by the dust suction fan 34. At the same time, the dust suction fan 34 is arranged on the side of the dust collection chamber 33 away from the dust suction port 311, so that the dust can be sucked from the dust suction port 311 to the deposition assembly 32, and the dust can be deposited in the dust collection chamber 33 under the action of the deposition assembly 32, and then the dust in the dust collection chamber 33 can be cleaned regularly. That is, the arrangement of the dust suction device 30 can reduce the amount of dust entering the range hood body 12, thereby extending the life of the range hood body 12 and reducing its cleaning frequency.

[0040] In addition, the dust suction device 30 is disposed on the range hood body 12, and can also absorb part of the oil smoke that cannot be covered by the range hood body 12, thereby improving the oil smoke absorption effect. And for the same amount of oil smoke, since part of the oil smoke close to one side of the dust suction pipe 31 or escaping can be sucked into the dust suction pipe 31, it is convenient to reduce the gear of the range hood body 12 during use, thereby reducing the noise of the range hood body 12.

[0041] Furthermore, the deposition assembly 32 includes a dust hood 321, which defines the bottom of the dust collecting chamber 33. The dust hood 321 has a first port 3211 and a second port 3212 that are interconnected. The contour area of ​​the first port 3211 is greater than the contour area of ​​the second port 3212. The first port 3211 is located on a side of the second port 3212 close to the dust suction port 311. The dust hood 321 is provided with an end of the first port 3211 connected to the inner circumference of the dust suction pipe 31.

[0042] In this way, dust enters the dust hood 321 from the first port 3211, and moves to the second port 3212 under the guidance of the side wall of the dust hood 321, and finally moves from the second port 3212 to the outside of the dust hood 321. Since the contour area of ​​the second port 3212 is small, dust is not easy to fall back into the dust collection pipe 31 from the second port 3212 through the dust hood 321, but will accumulate on the dust hood 321, that is, accumulate in the dust collecting chamber 33.

[0043] Specifically, along the direction from the first port 3211 to the second port 3212 , the inner cavity of the dust hood 321 gradually narrows.

[0044] For example, the dust cover 321 is in the shape of a funnel, the first port 3211 can be considered as the large end of the funnel, and the second port 3212 is the small end of the funnel. Alternatively, the dust cover 321 can also be a hemispherical structure or a bowl-shaped structure.

[0045] In other embodiments, along the direction from the first port 3211 to the second port 3212 , the contour area of ​​the dust hood 321 may remain unchanged first and then gradually shrink, and dust can also be sucked into the dust collecting chamber 33 .

[0046] In some embodiments of the present application, the deposition assembly 32 includes a first filter 322 , which is located on a side of the dust hood 321 close to the dust suction fan 34 , and defines a top wall of the dust collecting chamber 33 .

[0047] In this way, the dust passing through the dust hood 321 can fall onto the dust hood 321 under the stopping action of the first filter 322, and then slide along the outer wall of the dust hood 321 to between the dust hood 321 and the inner wall of the dust collection duct 31, and finally deposited in the dust collecting chamber 33.

[0048] Furthermore, the first filter 322 has a first concave cavity 3221 that is recessed toward one side of the dust suction cover 321 , and the cross-sectional profile of the first concave cavity 3221 gradually increases along the direction from the dust suction port 311 to the dust suction fan 34 .

[0049] Specifically, one end of the first filter 322 away from the dust hood 321 is connected to the inner circumference of the dust collection pipe 31. The first filter 322 is in an arc-shaped structure, a conical structure or a truncated cone structure, so that along the direction from the dust suction port 311 to the dust suction fan 34, the cross-sectional profile of the first concave cavity 3221 of the first filter 322 gradually increases. Compared with the filter arranged in a plane, the first filter 322 of the present application is in an arc-shaped structure, a conical structure or a truncated cone structure, which is used to increase the filtering area of ​​the first filter 322, thereby improving the filtering effect. Specifically, taking the truncated cone structure as an example, the small mouth end of the first filter 322 is closer to the dust collection hood 321 than the large mouth end, and the large mouth section of the first filter 322 is used to connect to the inner wall of the dust collection pipe 31 to prevent dust from passing between the first filter 322 and the dust collection pipe 31.

[0050] In some embodiments of the present application, the deposition assembly 32 includes a second filter 323 , which is located on a side of the first filter 322 away from the dust cover 321 , and the mesh size of the second filter 323 is greater than that of the first filter 322 .

[0051] That is, the first filter 322 is a coarse filter, and the second filter 323 is a fine filter. The dust entering the dust collecting chamber 33 first passes through the first filter 322 to filter out larger particles of dust, so that the larger particles of dust fall into the dust collecting chamber 33, and then passes through the second filter 323 to filter out smaller particles of dust, so that the smaller particles of dust fall into the dust collecting chamber 33.

[0052] Furthermore, the second filter 323 has a second concave cavity 3231 that is recessed toward the first filter 322 , and the cross-sectional profile of the second concave cavity 3231 gradually increases along the direction from the dust suction port 311 to the dust suction fan 34 .

[0053] One end of the second filter 323 away from the first filter 322 is connected to the inner circumference of the dust suction pipe 31. The second filter 323 is in an arc-shaped structure, a conical structure or a truncated cone structure, so that along the direction from the dust suction port 311 to the dust suction fan 34, the cross-sectional profile of the second cavity 3231 gradually increases, which is also used to increase the filtering area of ​​the first filter 322, thereby improving the filtering effect.

[0054] Specifically, the first filter 322 is a truncated cone structure, the second filter 323 is a conical structure, and the second filter 323 is sleeved inside the first filter 322 .

[0055] Furthermore, a dust removal port 331 is provided on the outer wall of the dust collecting chamber 33. When a lot of dust is accumulated on the dust collecting cover 321, the dust removal port 331 can be opened to remove the dust in the dust collecting chamber 33. Specifically, the dust removal port 331 is provided with a cover plate, which is connected to the dust collecting pipe 31 by screws. When dust cleaning is required, the cover plate is removed.

[0056] In some embodiments of the present application, a dust inlet 313 is provided in the dust suction duct 31, the deposition assembly 32 includes a baffle 324, the dust inlet 313 is provided at one end of the dust suction hood 321 close to the dust suction port 311, and the baffle 324 is used to block or release the dust inlet 313; when the dust suction fan 34 is turned off, the baffle 324 blocks the dust inlet 313; when the dust suction fan 34 is started, the baffle 324 releases the dust inlet 313.

[0057] With such arrangement, when the dust suction fan 34 is started, the baffle 324 can release the dust inlet 313, so that the dust enters the deposition assembly 32 through the dust inlet 313, and is deposited in the dust collecting chamber 33 under the action of the dust hood 321 and the first filter 322. When the dust suction fan 34 is turned off, the baffle 324 blocks the dust suction duct 31, and since the baffle 324 is located at one end of the dust hood 321 close to the dust suction port 311, when the suction force disappears, the dust on the dust hood 321 can fall back onto the dust hood 321, and the dust under the dust hood 321 can fall back onto the baffle 324, that is, it can prevent the dust sucked into the dust suction duct 31 from returning to the external environment again when the dust suction fan 34 is turned off.

[0058] In some embodiments, the baffle 324 is an elastic baffle, one end of which is connected to the dust suction duct 31, and the elastic baffle can undergo elastic deformation under the suction force of the dust suction fan 34; when the dust suction fan 34 is started, the elastic baffle undergoes elastic deformation and the dust inlet 313 opens; when the dust suction fan 34 is turned off, the elastic baffle restores its deformation and the dust inlet 313 is closed.

[0059] The baffle 324 is an elastic baffle. When the dust suction fan 34 is started, the elastic baffle can be bent and deformed under the action of the dust suction fan 34, thereby opening the dust inlet 313. When the dust suction fan 34 is turned off, the elastic baffle can rebound to the initial state and close the dust inlet 313. Specifically, the elastic baffle includes a connecting portion and a deforming portion. The connecting portion is connected to the inner wall of the dust suction duct 31. When there is no suction force, the connecting portion and the deforming portion are in the same plane. At this time, the elastic baffle blocks the dust suction duct 31. Under the suction force of the dust suction fan 34, the deforming portion can bend relative to the connecting portion, thereby opening the dust inlet 313.

[0060] In some other embodiments, the middle portion of the baffle 324 may be rotatably connected to the inner wall of the dust collection duct 31. When the dust collection fan 34 is started, one side of the baffle 324 rotates upward and the other side rotates downward, so that the baffle 324 stands in the dust collection duct 31, that is, the dust collection duct 31 is open; when the dust collection fan 34 is turned off, the baffle 324 returns to the horizontal position, thereby blocking the dust collection duct 31.

[0061] Most of the gas stoves on the market are two-burner type gas stoves. Since there are two burners, the range hood body 12 is generally fixed on the two burners. However, in the case of using only one burner, the suction effect of the range hood body 12 is not good enough.

[0062] In one embodiment of the present application, the dust suction device 30 includes a controller 393 and a smoke sensor 37. The smoke sensor 37 is arranged at the dust suction port 311. The smoke sensor 37 and the dust suction fan 34 are respectively connected to the controller 393 signal. The smoke sensor 37 is used to detect the amount of smoke at the dust suction port 311. The controller 393 is used to control the opening and closing of the dust suction fan 34 according to the amount of smoke detected by the smoke sensor 37.

[0063] In this way, a smoke sensor 37 is provided at the dust suction port 311. When the smoke sensor 37 detects that the amount of smoke is large, the dust suction fan 34 is controlled to start at the same time, so that the smoke can be sucked in through the dust suction pipe 31, thereby improving the smoke suction effect.

[0064] The dust suction device 30 includes a push plate 392, which is connected to the controller 393 by signal. The push plate 392 can be extended and retracted along a first direction in the dust suction duct 31, and the first direction is perpendicular to the extension direction of the dust suction duct 31. The controller 393 is used to control the extension and retraction of the push plate 392 according to the amount of smoke detected by the smoke sensor 37, so as to change the air inlet area of ​​the dust suction duct 31 through the push plate 392.

[0065] In this way, the push plate 392 is extended and retracted along the first direction, that is, it is possible to control the air inlet area in the dust suction duct 31, thereby controlling the air volume in the dust suction duct 31. Specifically, when the smoke sensor 37 detects that the amount of smoke is large, the controller 393 controls the push plate 392 to retract, so as to reduce the blocking area of ​​the dust suction duct 31, increase the air inlet, and increase the air volume, so that the oil smoke is sucked away as soon as possible; when the smoke sensor 37 detects that the amount of smoke is small, the controller 393 controls the push plate 392 to extend, so as to increase the blocking area of ​​the dust suction duct 31, reduce the air inlet, and reduce the air volume.

[0066] Specifically, the dust suction device 30 further includes a dust suction motor 391, which drives the push plate 392 to extend and retract, and the controller is connected to the motor signal. The dust suction motor 391 is used to receive a signal from the controller 393 to control the push plate 392 to extend and retract.

[0067] In some embodiments, the other end of the dust suction duct 31 away from the dust suction port 311 is an air outlet 312 , the air outlet 312 is provided with a third filter 38 , and the dust suction fan 34 is arranged at one end of the dust suction duct 31 close to the air outlet 312 , and the dust suction fan 34 is used to be installed on the ceiling 20 .

[0068] In actual operation, when the dust collecting device 30 is started, the dust collecting fan 34 is turned on, the baffle 324 is opened, and the dust collecting port 311 forms a negative pressure. Dust enters from the dust collecting port 311 and passes through the dust collecting cover 321. Larger dust particles are stopped by the first filter 322 to be deposited in the dust collecting chamber 33. Smaller dust particles pass through the first filter 322 and are stopped by the second filter 323, and can also be deposited in the dust collecting chamber 33. A dust removal port 331 is provided on the side wall of the dust collecting chamber 33, and the dust in the dust collecting chamber 33 can be swept out through the dust removal port 331. A small amount of oil smoke enters the dust collecting duct 31 through the dust collecting port 311, and can be filtered by the third filter 38 provided at the air outlet 312, and then discharged from the air outlet 312.

[0069] The present application further discloses a range hood 10 , comprising a range hood body 12 and a dust suction device 30 , wherein the dust suction device 30 is disposed on at least one side of the range hood body 12 .

[0070] Specifically, the smoke collecting box is provided with dust suction devices 30 on both sides of the arrangement direction of the stove heads. For example, if two stove heads are arranged in sequence along the left and right directions, dust suction devices 30 are provided on both sides of the smoke collecting box along the left and right directions. The two dust suction devices 30 can be controlled separately. When the left stove head is used, the left dust suction device 30 is turned on, and the left dust suction device 30 can inhale the oil smoke escaping from the left side, thereby improving the oil smoke inhalation effect. At the same time, since the left dust suction device 30 can directly inhale the oil smoke escaping from the left side, the air volume of the range hood body 12 can be appropriately reduced, thereby reducing the noise. Similarly, when the right stove head is used, the right dust suction device 30 is turned on, and the right dust suction device 30 can inhale the oil smoke escaping from the right side, thereby improving the oil smoke inhalation effect and reducing the noise. In addition, the dust suction fan 34 of the dust suction device 30 is arranged on the ceiling 20, and the ceiling 20 can isolate most of the noise of the dust suction fan 34, thereby reducing the noise of the entire range hood body 12.

[0071] Furthermore, the dust suction port 311 of the dust suction duct 31 is located lower than the smoke intake port of the range hood body 12 .

[0072] Among them, the dust suction duct 31 can absorb both oil smoke and dust. Therefore, the dust suction port 311 of the dust suction duct 31 is located lower than the smoke inlet of the smoke collecting box, so that dust can enter the dust suction duct 31 through the dust suction port 311, thereby reducing the dust entering the interior of the range hood body 12 and extending the service life of the range hood body 12.

[0073] In some embodiments, the range hood 10 includes a shell 11 , and a dust suction duct 31 is formed between the range hood body 12 and the shell 11 .

[0074] In some other embodiments, the range hood 10 includes a shell 11 , a dust suction duct 31 is disposed in the shell 11 , the dust suction duct 31 includes a hose 35 , the hose 35 is located at the bottom of the baffle 324 , and the dust suction port 311 is located at the end of the hose 35 .

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A dust collecting device, arranged on a range hood body, characterized in that: The dust collecting device comprises: A dust suction pipe, one end of which is provided with a dust suction port; a deposition assembly disposed in the dust collection duct, wherein the deposition assembly and a side wall of the dust collection duct jointly define a dust collection chamber, and the deposition assembly is used to deposit dust entering the dust collection duct in the dust collection chamber; and The dust suction fan is arranged in the dust suction duct and is located on a side of the deposition component away from the dust suction port.

2. The dust collecting device according to claim 1, characterized in that: The deposition assembly comprises a dust hood, wherein the dust hood is provided with a first port at one end close to the dust suction port, and a second port at one end facing away from the dust suction port; the contour area of ​​the second port is smaller than the contour area of ​​the first port; The dust collection hood is provided with one end of the first port connected to the inner circumferential surface of the dust collection duct; The dust collecting hood defines the bottom of the dust collecting cavity.

3. The dust collecting device according to claim 2, characterized in that: Along the direction from the first port to the second port, the inner cavity of the dust hood gradually narrows.

4. The dust collecting device according to claim 2, characterized in that: The deposition assembly comprises a first filter, the first filter is located on a side of the dust hood close to the dust suction fan, and the first filter is used to define the top wall of the dust collecting chamber.

5. The dust collecting device according to claim 4, characterized in that: The first filter has a first concave cavity that is recessed toward one side of the dust suction port, and the cross-sectional profile of the first concave cavity gradually increases along the direction from the dust suction port to the dust suction fan.

6. The dust collecting device according to claim 4, characterized in that: The deposition assembly comprises a second filter, the second filter is located on a side of the first filter away from the dust cover, and the mesh number of the second filter is greater than the mesh number of the first filter.

7. The dust collecting device according to claim 6, characterized in that: The second filter has a second concave cavity that is recessed toward one side of the first filter, and the cross-sectional profile of the second concave cavity gradually increases along the direction from the dust suction port to the dust suction fan.

8. The dust collecting device according to claim 2, characterized in that: The dust suction duct is provided with a dust inlet, the deposition assembly comprises a baffle, and the dust inlet is located on a side of the dust suction cover close to the dust suction inlet; When the dust suction fan is turned off, the baffle blocks the dust inlet; When the dust suction fan is started, the baffle releases the dust inlet.

9. The dust collecting device according to claim 8, characterized in that: The baffle is an elastic baffle, one end of which is connected to the inner circumference of the dust suction duct, and the elastic baffle can be elastically deformed under the suction force of the dust suction fan; When the dust suction fan is started, the elastic baffle undergoes elastic deformation and the dust inlet is opened; When the dust suction fan is turned off, the elastic baffle recovers its deformation and the dust inlet is closed.

10. The dust collecting device according to claim 1, characterized in that: The dust suction device includes a controller and a smoke sensor, the smoke sensor is arranged at the dust suction port, the smoke sensor and the dust suction fan are respectively connected to the controller signal, the smoke sensor is used to detect the amount of smoke at the dust suction port, and the controller is used to control the opening and closing of the dust suction fan according to the amount of smoke detected by the smoke sensor.

11. The dust collecting device according to claim 10, characterized in that: The dust suction device includes a push plate, which is connected to the controller signal. The push plate can be extended and retracted in the dust suction duct along a first direction, and the first direction is perpendicular to the extension direction of the dust suction duct. The controller is used to control the extension and retraction of the push plate according to the amount of smoke detected by the smoke sensor, so as to change the air inlet area of ​​the dust suction duct through the push plate.

12. The dust collecting device according to claim 1, characterized in that: The other end of the dust suction duct away from the dust suction port is an air outlet, the air outlet is provided with a third filter, the dust suction fan is arranged at one end of the dust suction duct close to the air outlet, and the dust suction fan is used to be installed on the ceiling.

13. A range hood, characterized in that: It comprises a range hood body and the dust suction device according to any one of claims 1 to 12, wherein the dust suction device is provided on at least one side of the range hood body.

14. The range hood according to claim 13, characterized in that: The dust suction port of the dust suction duct is located lower than the smoke suction port of the range hood body.

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