Range hood and its filter device

Abstract

The present invention relates to a range hood and its filter device. The filter device is disposed within the range hood housing and includes a filter assembly. The filter assembly comprises a filter element and a driver. The filter element is located in the flow path of oil fumes within the housing. The driver is mounted in the housing and in transmission connection with the filter element. The driver is configured to drive the filter element to rotate about its rotation axis. The range hood and its filter device provided by the present invention have excellent filtering performance.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a range hood and a filtering device thereof. Background Art

[0002] With the advancement of technology and the improvement of people's living standards, range hoods have become widely used in every household. To prevent environmental damage caused by high levels of oil in exhaust fumes, range hoods are typically equipped with filters to filter out the oil fumes. Traditional filters are ineffective at filtering oil fumes, causing oil to easily adhere to the operating components within the range hood, hindering operation. Summary of the Invention

[0003] Based on this, it is necessary to provide a range hood and a filtering device thereof with better filtering effect in order to address the problem of poor filtering effect of the above-mentioned filter element.

[0004] A filter device is provided in a housing of a range hood, wherein the filter device comprises a filter assembly, and the filter assembly comprises:

[0005] a filter element, located on a flow path of oil smoke in the housing; and

[0006] A driving member is installed on the housing and is in transmission connection with the filter element. The driving member is configured to drive the filter element to rotate around a rotation axis of the filter element.

[0007] In one embodiment, the filter element includes a primary filter element and a secondary filter element, and the primary filter element and the secondary filter element are sequentially arranged at intervals along the flow direction of the oil smoke.

[0008] In one embodiment, the filter assembly further includes a mounting member, which includes a hollow cylinder and a limiting body extending along the outer periphery of the cylinder. The driving member has an output shaft, which passes through the cylinder and is clamped with the cylinder. The filter member is connected to the limiting body.

[0009] In one embodiment, the filter assembly further includes a pre-tightening member at least partially accommodated in the barrel, and the pre-tightening member is clamped between the output shaft and the barrel.

[0010] In one embodiment, the filter assembly further includes a shell installed in the casing, the shell having a filter cavity, the side wall of the shell being provided with an air inlet and an air outlet connected to the filter cavity, and the drive element and the filter element being accommodated in the filter cavity.

[0011] In one embodiment, a detection component is further included that is installed in the casing, and the detection component includes an oil fume detection element and a controller. The oil fume detection element is used to detect the oil fume parameters in the casing. The controller is electrically connected to the oil fume detection element and the driving element, and is used to control the driving element to increase the rotation speed when the oil fume parameters are equal to or greater than a preset parameter.

[0012] In one embodiment, a sliding assembly is further included, and the detection assembly is disposed on the housing through the sliding assembly, and the detection assembly slides along the axial direction of the housing under the action of the sliding assembly.

[0013] In one embodiment, the sliding assembly includes a guide member and a sliding member, the guide member is provided on the housing and extends axially along the housing, the detection assembly is provided on the sliding member, a guide portion is formed on the guide member, and a sliding portion is formed on the sliding member that slides with the guide portion.

[0014] In one embodiment, the sliding assembly further includes a first rolling member, and the first rolling member is rollingly connected to the sliding member and the guide member.

[0015] In one embodiment, the guide member has a stop portion, which is located on the sliding path of the sliding member and is used to limit the sliding of the sliding member.

[0016] In one embodiment, the sliding member includes a first sub-sliding member and a second sub-sliding member, the first sub-sliding member extends along the extension direction of the guide member and slides with the guide member, the second sub-sliding member is slidable relative to the first sub-sliding member along the extension direction of the first sub-sliding member, and the detection component is arranged on the second sub-sliding member.

[0017] In one embodiment, a guide portion is formed on the first sub-slider, and a fitting portion that slides with the guide portion is formed on the second sub-slider.

[0018] In one embodiment, the sliding assembly further includes a second rolling member, and the second rolling member is rollingly connected to the first sub-sliding member and the second sub-sliding member.

[0019] In one embodiment, the sliding assembly further includes a limiting member, which is located on the sliding path of the second sub-sliding member and is used to limit the sliding of the second sub-sliding member.

[0020] A range hood, comprising:

[0021] housing; and

[0022] As for the above-mentioned filter device, the filter device is arranged in the housing.

[0023] In the above-mentioned range hood and its filter device, the filter element is positioned along the flow path of the oil smoke within the housing to filter the oil smoke. Furthermore, a drive element mounted on the housing drives the filter element to rotate about its rotation axis. Therefore, during and after the oil smoke passes through the filter element, oil contaminants are removed from the oil smoke, resulting in cleaner oil smoke. Therefore, after the oil smoke is filtered by the rotating filter element, the oil contaminant content in the oil smoke is reduced, and the filtering effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a range hood in one embodiment of the present invention;

[0025] Figure 2 for Figure 1 The schematic diagram of the structure of the control panel in the range hood shown;

[0026] Figure 3 for Figure 1 The structural diagram of the filter device in the range hood shown;

[0027] Figure 4 for Figure 3 An exploded view of the filter assembly in the filter device shown;

[0028] Figure 5 for Figure 3 A schematic structural diagram of a detection component in a filtering device shown;

[0029] Figure 6 for Figure 5 The schematic diagram of the structure of the connection between the oil smoke detection component and the conversion component in the detection assembly shown;

[0030] Figure 7 for Figure 6 The front view of the oil smoke detection component and the conversion component is shown;

[0031] Figure 8 for Figure 3 An exploded view of a sliding assembly in a filter device is shown;

[0032] Figure 9 for Figure 8 A schematic structural diagram of a sliding assembly in the filtering device shown;

[0033] Figure 10 for Figure 9 A schematic structural diagram of a guide member in the filtering device shown;

[0034] Figure 11 for Figure 9 The schematic diagram of the structure of the filtering device shown is shown in FIG. 1 , in which the guide member is removed. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of the present invention, it should be understood that 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" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, 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 intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that when 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 an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0041] See also Figure 1 The present application provides a range hood 10, which includes a casing 110, a filter device 120 and a fan 130. The casing 110 provides an installation base for the filter device 120 and the fan 130. The filter device 120 and the fan 130 are arranged in the casing 110. The filter device 120 is used to filter oil smoke, and the fan 130 is used to drive external oil smoke to flow into the casing 110 for filtration, and drive the oil smoke to be discharged to the outside after filtration.

[0042] Specifically, a hollow receiving chamber 112 is formed inside the casing 110, and an air inlet 114 and an air outlet 116 are provided on the casing 110. The filter device 120 is disposed in the receiving chamber 112 and is located on the flow path of the oil smoke in the receiving chamber 112. Driven by the fan 130, the oil smoke flows in from the air inlet 114 and is filtered by the filter device 120 and then discharged from the air outlet 116.

[0043] The range hood 10 also includes a smoke collection hood 140, which is arranged at the air inlet 114 of the casing 110 and is located outside the casing 110. Under the action of the fan 130, a negative pressure area is formed in the smoke collection hood 140 to accommodate and collect oil smoke that cannot be discharged in time, thereby avoiding the overflow and spread of oil smoke and causing a poor user experience.

[0044] The range hood 10 further includes an oil screen 150 , which is installed at the air inlet 114 and clamped between the housing 110 and the fume hood 140 . The oil fume gathered in the fume hood 140 is initially filtered by the oil screen 150 and then flows from the air inlet 114 into the receiving chamber 112 for further processing.

[0045] The range hood 10 further includes a centrifugal fan 160 and a volute 170, which are disposed within the receiving chamber 112. The oil smoke filtered by the filter device 120 is cooled by the centrifugal fan 160 and then blown into the volute 170. The volute 170 collects and guides the oil smoke blown from the centrifugal fan 160 so that it can be discharged from the housing 110 under the guidance of the volute 170. The fan 130 is located within the volute 170, which also protects the fan 130, preventing oil smoke from coming into contact with the fan 130, thereby extending the service life of the fan 130.

[0046] The range hood 10 further includes a check valve 180 , which is disposed at the exhaust port 116 of the housing 110 and is used to control the discharge of oil smoke and prevent the oil smoke discharged to the outside from flowing back into the housing 110 .

[0047] The range hood 10 further includes an oil cup 190 , which is adhered to the oil net 150 . The oil smoke on the filter device 120 and the volute 170 is finally collected in the oil cup 190 .

[0048] Please also refer to Figure 2 The range hood 10 also includes a control panel 210, which is electrically connected to the fan 130, the filter device 120, and other components and is used to control the operation of the fan 130, the filter device 120, and other components. Specifically, the control panel 210 is provided with a start button 211 and a stop button 212. The start button 211 is used to start the fan 130 and open the check valve 180, while the stop button 212 is used to stop the fan 130 and close the check valve 180. The control panel 210 is also provided with a centrifugal fan button 213 for starting and stopping the centrifugal fan 160. The centrifugal fan 160 is electrically connected to the control panel 210 via a first connecting wire 220.

[0049] Specifically, the entire operating process of the range hood 10 is as follows: Pressing the start button 211 starts the fan 130, followed by pressing the centrifugal fan button 213 to start the centrifugal fan 160. The oil smoke then passes through the fume hood 140, oil screen 150, air inlet 114, filter 120, centrifugal fan 160, volute 170, and check valve 180 and is discharged outdoors. After the range hood 10 has operated for a period of time, the centrifugal fan button 213 and the stop button 212 are turned off, turning off the centrifugal fan 160 and the fan 130, and the range hood 10 ends its operation.

[0050] Please also refer to Figure 3 and Figure 4Specifically, the filter device 120 includes a filter assembly 121, which includes a filter element 1211 and a drive element 1212. The filter element 1211 is located in the flow path of oil smoke in the housing 110 and is used to filter the oil smoke. The drive element 1212 is installed in the housing 110 and is in transmission connection with the filter element 1211. The drive element 1212 is configured to drive the filter element 1211 to rotate about the rotation axis of the filter element 1211. Specifically, the rotation axis can be a virtual axis or an actual axis on the filter element 1211. The extension direction of the rotation axis can be parallel to or intersect with the flow direction of the oil smoke. It is only necessary to ensure that the oil smoke can pass through the filter element 1211 during the process of the filter element 1211 rotating about the rotation axis.

[0051] It can be understood that the oil net 150 performs preliminary filtration on the oil smoke. After filtering by the oil net 150, the larger particles of oil adhere to the oil net 150, and the smaller particles of oil follow the oil smoke and flow into the receiving chamber 112 from the air inlet 114, and are filtered again under the action of the filter element 1211. On the one hand, smaller particles of oil are separated from the oil smoke by the action of the filter element 1211 and adhere to the filter element 1211 or fall off the filter element 1211 and are finally collected in the oil cup 190. On the other hand, since the driving element 1212 drives the filter element 1211 to rotate during the filtration process of the filter element 1211, under the action of a centrifugal force, smaller particles or even smaller oil in the oil smoke can be thrown out of the oil smoke during the process of the oil smoke flowing through the filter element 1211. Moreover, for a period of time after the oil smoke flows out of the filter element 1211, due to inertia, the oil smoke continues to rotate, and then the remaining oil in the oil smoke can be further thrown out to form oil smoke with very little oil content. It can be seen that by setting up the filter device 120, the oil smoke has a better filtering effect. After passing through the filter device 120, the oil smoke flows through the centrifugal fan 160, the volute 170 and the check valve 180 in sequence and is discharged to the outside. In addition, it is worth mentioning that since the oil smoke contains very little oil after passing through the filter device 120, less oil adheres to the centrifugal fan 160 and the volute 170 during the process of the oil smoke flowing through the centrifugal fan 160 and the volute 170. In this way, operational failures of the centrifugal fan 160 and the volute 170 caused by excessive oil adhesion can be reduced, thereby extending the service life of the centrifugal fan 160 and the volute 170 and improving the exhaust effect of the range hood 10.

[0052] In one embodiment, the filter assembly 121 further includes a housing 1213 mounted within the housing 110. The housing 1213 has a filter cavity 12133. The sidewalls of the housing 1213 are formed with an air inlet 12131 and an air outlet 12135 communicating with the filter cavity 12133. The centrifugal fan 160 is mounted at the air outlet 12135. The driving member 1212 and the filter element 1211 are housed within the filter cavity 12133 and are mounted to the housing 110 via the housing 1213. Specifically, oil smoke flowing into the receiving cavity 112 of the housing 110 from the air inlet 114 flows into the filter cavity 12133 through the air inlet 12131, passes through the filter element 1211, and then flows out through the air outlet 12135. By providing the shell 1213, on the one hand, the installation of the driving component 1212 and the filter component 1211 can be facilitated; on the other hand, it can also prevent the oil smoke from spreading around in the receiving chamber 112, causing the oil smoke to flow through the centrifugal fan 160 and the volute 170 without being filtered. In other words, the provision of the shell 1213 can also ensure that the oil smoke flowing into the receiving chamber 112 from the air inlet 114 can flow into the filter chamber 12133 from the air inlet 12131 for centralized filtering treatment before flowing through the centrifugal fan 160 and the volute 170, so as to extend the service life of the centrifugal fan 160 and the volute 170.

[0053] Specifically, the filter element 1211 includes a primary filter element 12112 and a secondary filter element 12114, which are arranged in sequence along the flow direction of the oil smoke. The primary filter element 12112 is used to filter out smaller oil particles in the oil smoke, while the secondary filter element 12114 is used to filter out even smaller oil particles in the oil smoke. The provision of the primary filter element 12112 and the secondary filter element 12114 improves the filtration efficiency of the filter device 120, thereby preventing oil from adhering to the centrifugal fan 160 and the volute 170 and causing operational disturbances in the range hood 10. This allows the range hood 10 to maintain a high air volume during operation, resulting in a higher air extraction rate. Specifically, the provision of the primary filter element 12112 and the secondary filter element 12114 can achieve a filtration efficiency of over 98% for the filter element 1211. Optionally, the primary filter element 12112 and the secondary filter element 12114 are both filter nets, and the mesh diameter of the primary filter element 12112 is larger than the mesh diameter of the secondary filter element 12114 .

[0054] Furthermore, the filter assembly 121 also includes a mounting member 1214, which is used to connect the output shaft 12122 of the driving member 1212 and the filter element 1211. Specifically, the mounting member 1214 includes a hollow cylinder 12143 and a stopper 12146 extending along the outer periphery of the cylinder 12143. The driving member 1212 has an output shaft 12122, which passes through the cylinder 12143 and is clamped thereto. The filter element 1211 is connected to the stopper 12146. In this way, the reliability of the installation between the output shaft 12122 and the filter element 1211 can be improved.

[0055] Specifically, the limiting body 12146 is an annular structure, the filter element 1211 is a filter screen, a mounting hole is opened in the middle of the filter screen, the cylinder 12143 is passed through the mounting hole, and the limiting body 12146 is in contact with the side of the filter screen facing the driving member 1212, and is fixedly connected by a fixing member (screw, pin, etc.).

[0056] Specifically, the mounting member 1214 includes a first mounting member 12141 and a second mounting member 12142. The first mounting member 12141 includes a first barrel 12144 and a first stopper 12147. The second mounting member 12142 includes a second barrel 12145 and a second stopper 12148. The fixing member 1215 includes a first fixing member 12151 and a second fixing member 12152. The driving member 1212 also includes a driving body 12121, which is used to drive the output shaft 12122 to rotate the filter element 1211. It can be understood that the output shaft 12122 includes a first output shaft 12123 and a second output shaft 12124, and the first output shaft 12123 and the second output shaft 12124 are respectively disposed on opposite sides of the driving body 12121. Specifically, the driving body 12121 is located between the primary filter element 12112 and the secondary filter element 12114, the first output shaft 12123 is arranged on the side of the driving body 12121 close to the primary filter element 12112 and is connected to the primary filter element 12112 through the first cylinder 12144, the first limiter 12147 and the first fixing member 12151, and the second output shaft 12124 is arranged on the side of the driving body 12121 close to the secondary filter element 12114 and is connected to the secondary filter element 12114 through the second cylinder 12145, the second limiter 12148 and the second fixing member 12152. In this way, the stability of the connection between the primary filter element 12112 and the secondary filter element 12114 and the driving element 1212 can be improved, so that the rotation of the primary filter element 12112 and the secondary filter element 12114 is more stable.

[0057] Furthermore, the filter assembly 121 also includes a pre-tightening member 1216 at least partially housed within the barrel 12143. The pre-tightening member 1216 is clamped between the output shaft 12122 and the barrel 12143 to reinforce the connection between the output shaft 12122 and the mounting member 1214. Specifically, the pre-tightening member 1216 includes a first pre-tightening member 12161 and a second pre-tightening member 12162. The first pre-tightening member 12161 is used to reinforce the connection between the first output shaft 12123 and the first barrel 12144, and the second pre-tightening member 12162 is used to reinforce the connection between the second output shaft 12124 and the second barrel 12145.

[0058] In one embodiment, the filter assembly 121 also includes a support plate 1217, a fixing frame 1218 and a connecting member 1219, the connecting member 1219 includes a first connecting member 12191 and a second connecting member 12192, the driving body 12121 is passed through and limited in the limited space formed between the support plate 1217 and the fixing frame 1218. In order to prevent the driving body 12121, the support plate 1217 and the fixing frame 1218 from separating, the first connecting member 12191 (screws, pins, etc.) can also be used to fix the driving body 12121 and the fixing frame 1218, and the second connecting member 12192 (screws, pins, etc.) can be used to fix the fixing frame 1218 and the support plate 1217.

[0059] Please also refer to Figure 5 、 Figure 6 and Figure 7 In one embodiment, the filter device 120 further includes a detection assembly 122 mounted within the housing 110. The detection assembly 122 is disposed within the receiving chamber 112 and includes a fume detector 1223 and a controller 1221. The fume detector 1223 is configured to detect fume parameters within the housing 110. The controller 1221 is electrically connected to the fume detector 1223 and the driver 1212 and is configured to control the driver 1212 to increase its rotational speed when the fume parameters are equal to or greater than a preset parameter. Specifically, the fume parameters may include fume concentration parameters, fume flow parameters, and the like. Alternatively, the detection assembly 122 may be disposed on the housing 110 or on the filter assembly 121. Specifically, when the oil fume parameter detected by the oil fume detection element 1223 is equal to or greater than the preset parameter, the controller 1221 controls the driving element 1212 to increase the rotation speed, and then, the filter element 1211 is driven by the driving element 1212 to accelerate the rotation, so that the airflow in the filter cavity 12133 accelerates the circulation flow, and then, it can drive the oil fume to quickly flow from the air inlet 114 of the casing 110 into the filter cavity 12133 for filtration. In this way, within unit time, the smoking and filtering efficiency of the filter device 120 is increased, and then the smoking efficiency of the entire range hood 10 can be improved, so that the range hood 10 has a better smoking effect.

[0060] Optionally, if the fume parameter is a fume concentration parameter, the preset parameter can be set to 0.5 mg / m 3 When the oil smoke parameter is equal to or greater than 0.5mg / m 3 When the oil smoke parameter is less than 0.5mg / m 3 , the controller 1221 controls the rotation speed of the driving member 1212 to 800 rpm.

[0061] Please refer again Figure 2 Specifically, the control panel 210 is also equipped with a filter assembly button 214, a fume detector button 215, a timer button 216, and an alarm button 217. The controller 1221 is electrically connected to the control panel 210 via a second connecting wire 1225. The filter assembly button 214 is used to control the parameter settings of the working components within the filter device 120 during filtration. Specifically, pressing the filter assembly button 214 can set the speed of the driver 1212, among other settings. The fume detector button 215 is used to turn the fume detector 1223 on and off. The timer button 216 is used to set the filtration time of the filter device 120. For example, the filtration time can be set to 20 minutes or 30 minutes. After the set time expires, the driver 1212 within the filter device 120 stops operating. The range hood 10 is also equipped with an alarm, which can be configured to set alarm tasks as needed. For example, the alarm can be set to sound when the fan 130 malfunctions, or when the filter device 120's timer task expires. The alarm button 217 is used to control the start and stop of the alarm.

[0062] Optionally, the number of the oil smoke detection element 1223 in the detection assembly 122 may be one or more. In one embodiment, the number of the oil smoke detection element 1223 is two.

[0063] In one embodiment, the detection assembly 122 further includes a conductive wire 1227 and a converter 1229. The fume detector 1223 is electrically connected to the conductive wire 1227 via the converter. The end of the conductive wire 1227, distal from the fume detector 1223, is electrically connected to the controller 1221. The provision of the converter and conductive wire 1227 to connect the fume detector 1223 and the controller 1221 effectively reduces the production cost and assembly difficulty of the detection assembly 122. Furthermore, the length of the conductive wire 1227 is easily controllable and can be adjusted to suit specific requirements to facilitate connection between the fume detector 1223 and the controller 1221.

[0064] Please also refer to Figure 8 and Figure 9In one embodiment, the filter device 120 further includes a sliding component 123, and the detection component 122 is provided on the casing 110 through the sliding component 123, and the detection component 122 slides along the axial direction of the casing 110 under the action of the sliding component 123. Specifically, the axial direction of the casing 110 is roughly the same as the flow direction of the oil smoke before it flows from the air inlet 114 into the volute 170 in the receiving chamber 112. By providing the sliding component 123, under the action of the sliding component 123, the detection component 122 slides, and the oil smoke parameters at multiple positions in the casing 110 can be detected, and then, the average value of the oil smoke parameters is obtained by integrating the multiple oil fume parameters, and the controller 1221 determines whether it is necessary to control the driving member 1212 to increase the rotation speed based on the average value. By providing the sliding component 123, the accuracy of the detection of the detection component 122 can be improved.

[0065] In addition, it is worth noting that, in the present application, the detection assembly 122 is mounted on the sliding assembly 123 via the housing 1213, that is, the detection assembly 122 is mounted on the housing 1213, and the housing 1213 is mounted on the sliding assembly 123. Under the action of the sliding assembly 123, both the filter assembly 121 and the detection assembly 122 can slide along the axial direction of the housing 110. In the prior art, the filter assembly 121 is usually close to the air inlet 114. In this way, the filter assembly 121 has a certain resistance effect on the oil smoke accumulated at the air inlet 114. When the indoor oil smoke concentration is high, the oil smoke cannot enter the housing 110 from the air inlet 114 in a timely and effective manner, resulting in a poor user experience. In the present application, under the action of the sliding component 123, the filter component 121 and the detection component 122 can both slide along the axial direction of the casing 110. In this way, the distance between the filter component 121 and the air inlet 114 of the casing 110 can be adjusted, so that the oil smoke can enter the receiving cavity 112 from the air inlet 114 in time and be filtered by the filter component 121, so that the range hood 10 has better smoking effect and filtering effect.

[0066] Please also refer to Figure 10 and Figure 11 Specifically, the sliding assembly 123 includes a guide member 1231 and a sliding member 1232. The guide member 1231 is disposed on the housing 110 and extends axially along the housing 110. The detection assembly 122 is disposed on the sliding member 1232. The guide member 1231 is formed with a guide portion 12311, and the sliding member 1232 is formed with a sliding portion 12321 that slidably cooperates with the guide portion 12311. Specifically, at least one of the guide portion 12311 or the sliding portion 12321 extends axially along the housing 110. The sliding cooperation between the guide portion 12311 and the sliding portion 12321 can improve the sliding stability of the filter assembly 121 and the detection assembly 122.

[0067] Specifically, the guide portion 12311 is a guide groove recessed on the guide member 1231, which extends axially along the housing 110. The sliding member 1232 at least partially extends into the guide groove and slides with the guide groove. It can be understood that the portion of the sliding member 1232 extending into the guide groove is the sliding portion 12321.

[0068] In one embodiment, first limiting grooves 12135 are formed on two opposing groove walls of the guide groove, and two opposing side walls of the sliding member 1232 protrude to form locking protrusions 123233. The two locking protrusions 123233 correspond one-to-one with the two first limiting grooves 12135. The corresponding locking protrusions 123233 cooperate with the corresponding first limiting grooves 12135 to further improve the sliding stability of the sliding member 1232.

[0069] Furthermore, the guide member 1231 has a stop portion 12312, which is located on the sliding path of the sliding member 1232 and is used to limit the sliding of the sliding member 1232, so that the sliding member 1232 can slide within a fixed range relative to the guide member 1231 to ensure the reliability of the sliding between the sliding member 1232 and the guide member 1231.

[0070] Optionally, the stop portion 12312 can be provided at one end of the guide member 1231 or at opposite ends of the guide member 1231. In the present application, the stop portions 12312 are provided at opposite ends of the guide member 1231 so that the guide member 1231 can limit the position of the sliding member 1232 from both ends. Specifically, the stop portion 12312 includes a first stop portion 12313 and a second stop portion 12314. The first stop portion 12313 protrudes from the bottom of the guide slot and is located in the middle of one end of the guide member 1231. The second stop portion 12314 protrudes from two opposite groove walls of the guide slot.

[0071] Furthermore, the sliding assembly 123 further includes a first rolling member 1233, which is in rolling connection with the sliding member 1232 and the guide member 1231. The provision of the first rolling member 1233 reduces the contact area between the sliding member 1232 and the guide member 1231, thereby reducing the friction generated during the sliding between the sliding member 1232 and the guide member 1231. This reduces wear during the sliding engagement between the guide member 1231 and the sliding member 1232, thereby extending the service life of the sliding assembly 123.

[0072] Please also refer to Figure 11Specifically, the sliding assembly 123 further includes a retaining member 1236 extending axially along the housing 110. The first rolling member 1233 is mounted on the sliding member 1232 via the retaining member 1236. Specifically, first rolling grooves 12322 are defined between the retaining member 1236 and the sliding member 1232. The first rolling member 1233 is retained within the first rolling grooves 12322 of the retaining member 1236 and the sliding member 1232 and is capable of rolling relative to the retaining member 1236, the sliding member 1232, and the guide member 1231. Optionally, two retaining members 1236 are provided, one on each opposing side of the sliding member 1232. Each retaining member 1236 is provided with a plurality of first rolling grooves 12322, and the plurality of first rolling grooves 12322 on each retaining member 1236 are spaced apart along the length of the retaining member 1236.

[0073] In one embodiment, the slider 1232 includes a first sub-slider 12323 and a second sub-slider 12324. The first sub-slider 12323 extends along the extension direction of the guide member 1231 and slidably engages with the guide member 1231. The second sub-slider 12324 is slidable relative to the first sub-slider 12323 along the extension direction of the first sub-slider 12323. The detection assembly 122 is disposed on the second sub-slider 12324. In this embodiment, it can be understood that the sliding portion 12321 and the locking protrusion 123233 are formed on the first sub-slider 12323, the locking member 1236 is disposed on the first sub-slider 12323, the first sub-slider 12323 is rollingly connected to the guide member 1231 via the first rolling member 1233, and the first sub-slider 12323 slidably engages with the guide portion 12311 of the guide member 1231 via the sliding portion 12321. Specifically, the first sub-slider 12323 slides relative to the guide member 1231 to coarsely adjust the distance between the filter assembly 121 and the detection assembly 122 and the air inlet 114. The second sub-slider 12324 slides relative to the first sub-slider 12323 to finely adjust the distance between the filter assembly 121 and the air inlet 114. This allows for more precise sliding adjustment of the filter assembly 121 and the detection assembly 122, allowing oil smoke to quickly enter the housing 110 from the air inlet 114 and flow through the filter assembly 121 for filtration. Furthermore, the provision of the first sub-slider 12323 and the second sub-slider 12324 also improves the detection accuracy of the detection assembly 122.

[0074] Please refer again Figure 9Furthermore, a guide portion 123231 is formed on the first sub-slider 12323, and a mating portion 123241 is formed on the second sub-slider 12324. The guide portion 123231 slidably engages with the mating portion 123241. This further enhances the stability of the sliding engagement between the second sub-slider 12324 and the first sub-slider 12323. Specifically, the guide portion 123231 is a guide groove extending axially along the housing 110. The portion of the second sub-slider 12324 that extends into the guide groove forms the mating portion 123241, which engages with the guide portion 123231.

[0075] In one embodiment, the guide portion 123231 is formed on two opposite sides of the first sub-slider 12323, and the matching portion 123241 is formed on two opposite sides of the second sub-slider 12324. The matching portions 123241 on both sides of the second sub-slider 12324 correspond one-to-one and match with the guide portions 123231 on both sides of the first sub-slider 12323 to improve the stability of the matching between the first sub-slider 12323 and the second sub-slider 12324.

[0076] Furthermore, the sliding assembly 123 also includes a second rolling member 1234, which is in rolling connection with the first sub-slider 12323 and the second sub-slider 12324. The provision of the second rolling member 1234 reduces the friction generated during the sliding of the first sub-slider 12323 and the second sub-slider 12324. This reduces wear during the sliding engagement of the first and second sub-sliders 12323 and 12324, thereby extending the service life of the sliding assembly 123. Specifically, a second rolling groove 123242 is defined on the sidewall of the second sub-slider 12324. The second rolling member 1234 is confined within the second rolling groove 123242 and is rollable relative to the second sub-slider 12324 and the first sub-slider 12323. Preferably, second rolling members 1234 are provided on both opposing side walls of the second sub-slider 12324. This prevents interference with the sliding engagement between the second sub-slider 12324 and the first sub-slider 12323 and reduces wear between the first sub-slider 12323 and the second sub-slider 12324. Preferably, a plurality of second rolling grooves 123242 are defined on each side wall of the second sub-slider 12324, and the plurality of second rolling grooves 123242 are spaced apart along the axial direction of the housing 110.

[0077] Furthermore, the two opposing walls of the guide groove are further provided with second limiting grooves 123232. The opposing side walls of the second sub-slider 12324 correspond one-to-one with the two opposing second limiting grooves 123232. The second limiting grooves 123232 limit the second rolling element 1234 on the corresponding side walls, thereby improving the rolling stability of the second rolling element 1234.

[0078] In one embodiment, the sliding assembly 123 further includes a limiter 1235 , which is located on the sliding path of the second sub-slider 12324 and is used to limit the sliding of the second sub-slider 12324 , so that the second sub-slider 12324 can slide within a fixed range relative to the first sub-slider 12323 .

[0079] Furthermore, the stopper 1235 is engaged with the first sub-slider 12323, so that the stopper 1235 and the first sub-slider 12323 are detachably connected. This improves the installation efficiency of the stopper 1235 and the first sub-slider 12323. Moreover, by removing the stopper 1235, the sliding range of the first sub-slider 12323 can be adjusted to meet user needs.

[0080] In one embodiment, the limiting members 1235 are disposed at opposite ends of the second sub-slider 12324. Specifically, the limiting members 1235 include a first limiting member 12352 and a second limiting member 12351. The first limiting member 12352 and the second limiting member 12351 each protrude from the bottom of the guide slot and are located at opposite ends of the guide slot. The first limiting member 12352 is fixedly connected to the first sub-slider 12323, while the second limiting member 12351 is engaged with the first sub-slider 12323. The sliding range of the second sub-slider 12324 can be adjusted by removing the second limiting member 12351.

[0081] Specifically, a locking hole 12316 is provided at the bottom of the guide groove, and the second limiting member 12351 includes a second limiting body 12353 and a locking column (not visible) protruding from the bottom of the second limiting body 12353, and the locking column is clamped in the locking hole 12316, and the second limiting body 12353 protrudes from the bottom of the guide groove and is clamped with the guide groove to achieve the fixation of the second limiting member 12351.

[0082] It is understood that the filter device 120 may further include a power source, which is in transmission connection with the first sub-slider 12323 and the second sub-slider 12324. The power source is used to drive the second sub-slider 12324 to slide relative to the first sub-slider 12323, and can also be used to drive the first sub-slider 12323 to drive the second sub-slider 12324 to slide relative to the guide member 1231. Alternatively, the power source can be a telescopic cylinder, a combination of a drive motor and a screw, etc.

[0083] Specifically, a sliding button 218 is provided on the control panel 210, and the sliding button 218 is used to control the start and stop of the power source.

[0084] Next, the working process of the entire range hood 10 will be described in detail.

[0085] First, press the start button 211, the fan 130 starts, the check valve 180 opens, press the filter component button 214, set the working parameters of the drive component 1212 (or, set the preset parameters), press the oil fume detection component button 215, turn on the oil fume detection component 1223, press the slide button 218, start the power source, press the timing button 216, set the filtering time (for example, 20 minutes), under the action of the fan 130, the oil fume enters the receiving chamber 112 from the air inlet 114, and then is discharged to the outside from the air inlet 12131, the filter chamber 12133, the air outlet 12135 through the centrifugal fan 160, the volute 170 and the check valve 180. When the oil smoke flows into the receiving chamber 112, the sliding component 123 drives the detection component 122 to slide, so that the detection component 122 can detect the oil smoke parameters at multiple positions in the receiving chamber 112. When the oil smoke parameters are equal to or greater than the preset parameters, the driving component 1212 is controlled to increase the rotation speed, so that the rotation speed of the filter component 1211 increases, and then the smoke extraction efficiency of the range hood 10 is improved, and it has a better smoking effect. In the process of the oil smoke flowing through the shell 1213, the filter component 1211 filters the oil smoke, so that the oil content of the oil smoke is reduced, and then the filtered oil smoke is discharged to the outside through the centrifugal fan 160, the volute 170 and the check valve 180. When the set filtering time ends, press the oil smoke detection component button 215 to turn off the oil smoke detection component 1223, press the sliding button 218 to turn off the power source, press the stop button 212, the fan 130 is turned off, and the entire smoking process ends.

[0086] In the range hood 10 and its filter device 120, the filter element 1211 is positioned along the flow path of the oil smoke within the housing 110 to filter the oil smoke. Furthermore, a driver 1212 mounted on the housing 110 drives the filter element 1211 to rotate about its axis of rotation. Therefore, while the oil smoke passes through the filter element 1211 and for a period of time after the oil smoke passes through the filter element 1211, oil contaminants are removed from the oil smoke, thereby making the oil smoke cleaner. Therefore, after the oil smoke is filtered by the rotating filter element 1211, the oil contaminant content in the oil smoke is reduced, and the filtering effect is improved.

[0087] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0088] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A range hood, characterized in that: include: A housing, wherein the housing is hollow to form a receiving cavity, and an air inlet and an air outlet are provided on the housing; A filter device is disposed in the housing, the filter device comprising a filter assembly, the filter assembly comprising a filter element, a drive element, and a housing; the filter element is located on a flow path of oil smoke in the housing; the drive element is in transmission connection with the filter element, and the drive element is configured to drive the filter element to rotate about a rotation axis of the filter element; the housing is mounted in the housing, the housing having a filter cavity, a side wall of the housing being provided with an air inlet and an air outlet communicating with the filter cavity, the drive element and the filter element being accommodated in the filter cavity; A volute is provided in the receiving chamber, and the oil smoke filtered by the filter device flows out of the filter chamber from the air outlet and then enters the volute; The fan is located in the volute.

2. The range hood according to claim 1, characterized in that: The filter element comprises a primary filter element and a secondary filter element, and the primary filter element and the secondary filter element are sequentially arranged at intervals along the flow direction of the oil smoke.

3. The range hood according to claim 1, characterized in that: The filter assembly also includes a mounting member, which includes a hollow cylinder and a limiting body extending along the outer periphery of the cylinder. The driving member has an output shaft, which passes through the cylinder and is clamped with the cylinder. The filter is connected to the limiting body.

4. The range hood according to claim 3, characterized in that: The filter assembly further includes a pre-tightening member at least partially accommodated in the cylinder, wherein the pre-tightening member is clamped between the output shaft and the cylinder.

5. The range hood according to claim 1, characterized in that: It also includes a detection component installed in the casing, the detection component includes an oil fume detection component and a controller, the oil fume detection component is used to detect the oil fume parameters in the casing, the controller is electrically connected to the oil fume detection component and the driving component, and is used to control the driving component to increase the rotation speed when the oil fume parameters are equal to or greater than a preset parameter.

6. The range hood according to claim 5, characterized in that: It also includes a sliding component, through which the detection component is arranged on the housing, and the detection component slides along the axial direction of the housing under the action of the sliding component.

7. The range hood according to claim 6, characterized in that: The sliding assembly includes a guide member and a sliding member. The guide member is arranged on the housing and extends along the axial direction of the housing. The detection assembly is arranged on the sliding member. A guide portion is formed on the guide member. A sliding portion that slides with the guide portion is formed on the sliding member.

8. The range hood according to claim 7, characterized in that: The sliding assembly further includes a first rolling member, which is rollingly connected to the sliding member and the guide member.

9. The range hood according to claim 7, characterized in that: The guide member is provided with a stop portion, which is located on the sliding path of the sliding member and is used to limit the sliding of the sliding member.

10. The range hood according to claim 7, characterized in that: The sliding member includes a first sub-sliding member and a second sub-sliding member. The first sub-sliding member extends along the extension direction of the guide member and slides with the guide member. The second sub-sliding member is slidable relative to the first sub-sliding member along the extension direction of the first sub-sliding member. The detection component is arranged on the second sub-sliding member.

11. The range hood according to claim 10, characterized in that: A guide portion is formed on the first sub-slider, and a matching portion that is slidably matched with the guide portion is formed on the second sub-slider.

12. The range hood according to claim 10, characterized in that: The sliding assembly further includes a second rolling member, which is rollingly connected to the first sub-sliding member and the second sub-sliding member.

13. The range hood according to claim 10, characterized in that: The sliding assembly further includes a limiting member, which is located on the sliding path of the second sub-sliding member and is used to limit the sliding of the second sub-sliding member.

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