Range hood

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a range hood. The range hood comprises a shell, a fan assembly, a detection assembly and an alarm assembly, the fan assembly is arranged in the shell and is used for extracting oil fume; the detection assembly is arranged on the fan assembly and used for detecting the rotating speed of the fan assembly, the alarm assembly is arranged on the shell, the detection assembly is electrically connected with the alarm assembly, and when the rotating speed of the fan assembly is smaller than a preset value, the alarm assembly gives an alarm prompt to remind a user to clean the fan assembly. According to the range hood, by detecting the rotating speed of the fan assembly, a user is reminded to clean the interior of the range hood in time.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically relates to a range hood. Background Art

[0002] With the continuous improvement of people's living standards and the increasing demand for range hoods, range hoods have become an indispensable household appliance in home kitchens. At the same time, people's performance requirements for range hoods are also constantly increasing.

[0003] In the prior art, a range hood comprises a housing and a fan. The fan is arranged in the housing, and the kitchen fumes are extracted out by the fan to achieve the effect of extracting the fumes.

[0004] However, after the range hood has been used for a period of time, the interior of the range hood will be contaminated with a lot of oil, causing the fan speed to decrease, making the smoke extraction effect of the range hood worse. Utility Model Content

[0005] The present application provides a range hood to solve the problem that after the range hood has been used for a period of time, the fan speed decreases and the smoke extraction effect becomes poor.

[0006] The present application provides a range hood, comprising: a housing, a fan assembly, a detection assembly and an alarm assembly; the fan assembly is arranged in the housing to extract the fumes;

[0007] The detection component is arranged on the fan component to detect the rotation speed of the fan component. The alarm component is arranged on the shell. The detection component and the alarm component are electrically connected. When the rotation speed of the fan component is less than or equal to a preset value, the alarm component issues an alarm prompt to clean the fan component.

[0008] In some embodiments, the fan assembly includes a volute, an impeller, and a driving member. The volute is disposed in the casing, the impeller is rotatably disposed in the volute, and the driving member is disposed on the volute to drive the impeller to rotate.

[0009] In some embodiments, the detection assembly includes a mounting seat, an infrared sensor and a reflective layer, the reflective layer is coated on any blade of the impeller, the mounting seat is disposed on the volute, the infrared sensor is disposed on the mounting seat, and the detection end of the infrared sensor faces the blade of the impeller.

[0010] In some embodiments, an air inlet is opened on the side of the volute, and the mounting seat is arranged on the side of the volute having the air inlet, and the infrared rays emitted by the infrared sensor pass through the air inlet and irradiate the blades of the impeller.

[0011] In some embodiments, the mounting seat includes an arc plate and a connecting seat, the arc plate is arranged on the side of the volute and along the edge of the air inlet, the connecting seat is arranged on the arc plate, and the infrared sensor is detachably connected to the connecting seat.

[0012] In some embodiments, the infrared sensor is disposed obliquely toward the lower portion of the impeller.

[0013] In some embodiments, a surface of the arc-shaped plate facing the volute matches the volute.

[0014] In some embodiments, the number of the connecting seats is two, and the two connecting seats are respectively located at two ends of the arc-shaped plate.

[0015] In some embodiments, reinforcing ribs are provided on the curved plate.

[0016] In some embodiments, the alarm component includes a display screen and a display area disposed on the display screen, and the display area is used to issue a flashing alarm prompt.

[0017] The present application provides a range hood, which detects the rotational speed of a fan assembly through a detection component, and the detection component is electrically connected to an alarm component, so that the detection component transmits the detected rotational speed information to the alarm component, and the alarm component compares the rotational speed information transmitted by the detection component with a preset value. When the rotational speed of the fan assembly is less than the preset value, the alarm component issues an alarm prompt message to remind the user that the fan assembly needs to be cleaned. The detection component detects the operating status of the fan of the range hood in real time, so that when the fan is stained with too much oil and causes the rotational speed to drop, affecting the smoking effect, the alarm component can be used to promptly remind the user to clean it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 A schematic diagram of the structure of a range hood provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the blower assembly;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of part A in the middle;

[0022] Figure 4 for Figure 2 Schematic diagram of the structure of the detection component;

[0023] Figure 5 for Figure 2 A schematic diagram of the local structure of the middle mounting seat;

[0024] Figure 6 for Figure 2 Schematic diagram of the bottom structure of the middle mounting base.

[0025] Description of reference numerals:

[0026] 100-housing;

[0027] 200-fan assembly; 210-volute; 211-air inlet; 212-air inlet ring; 220-impeller;

[0028] 300-detection component; 310-mounting seat; 311-arc plate; 3111-first connecting portion; 3112-mounting portion; 3113-second connecting portion; 3114-reinforcement rib; 312-connecting seat; 320-infrared sensor; 330-reflective layer;

[0029] 400-Alarm component.

[0030] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0033] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0034] With the continuous improvement of people's living standards and the increasing demand for range hoods, range hoods have become an indispensable household appliance in home kitchens. At the same time, people's performance requirements for range hoods are also constantly improving.

[0035] In the prior art, a range hood comprises a housing and a fan. The fan is arranged in the housing, and the kitchen fumes are extracted out by the fan to achieve the effect of extracting the fumes.

[0036] However, after the range hood has been used for a period of time, the interior of the range hood will be contaminated with a lot of oil, causing the fan speed to decrease, making the smoke extraction effect of the range hood worse.

[0037] In order to solve the above-mentioned problem, the present application provides a range hood, which detects the rotational speed of a fan assembly through a detection component, and the detection component is electrically connected to an alarm component, so that the detection component transmits the detected rotational speed information to the alarm component, and the alarm component compares the rotational speed information transmitted by the detection component with a preset value. When the rotational speed of the fan assembly is less than the preset value, the alarm component issues an alarm prompt message to remind the user that the fan assembly needs to be cleaned. The detection component detects the operating status of the fan of the range hood in real time, so that when the fan is stained with too much oil and causes the rotational speed to drop, affecting the smoking effect, the alarm component can be used to promptly remind the user to clean it.

[0038] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0039] The present application provides a range hood, referring to Figures 1 to 6 The range hood includes a housing 100, a fan assembly 200, a detection assembly 300 and an alarm assembly 400; the fan assembly 200 is arranged in the housing 100 to extract the smoke.

[0040] The detection component 300 is arranged on the fan component 200 to detect the rotation speed of the fan component 200. The alarm component 400 is arranged on the shell 100. The detection component 300 and the alarm component 400 are electrically connected. When the rotation speed of the fan component 200 is less than a preset value, the alarm component 400 issues an alarm prompt to prompt the fan component 200 to be cleaned.

[0041] By adopting the above technical solution, the detection component 300 detects the rotation speed of the fan component 200, and the detection component 300 transmits the detected rotation speed information to the alarm component 400. The alarm component 400 compares the rotation speed information transmitted by the detection component 300 with the preset value. When the rotation speed of the fan component 200 is less than the preset value, the alarm component 400 issues an alarm prompt message to remind the user to clean the fan component 200. The detection component 300 detects the operating status of the range hood fan in real time, so that when the fan is stained with too much oil and causes the rotation speed to drop, affecting the smoking effect, the alarm component 400 can be used to promptly remind the user to clean it.

[0042] The shell 100 includes a main box body and a bottom shell, the bottom shell is connected to the bottom of the main box body, the fan assembly 200 is installed in the main box body, and the bottom box body is connected to the bottom shell so that the fan assembly 200 can extract the oil smoke under the bottom shell and discharge it from the top of the main box body.

[0043] In some embodiments, reference Figure 1 and Figure 2 The fan assembly 200 includes a volute 210, an impeller 220 and a driving member. The volute 210 is disposed in the housing 100, the impeller 220 is rotatably disposed in the volute 210, and the driving member is disposed on the volute 210 to drive the impeller 220 to rotate.

[0044] The volute 210 is fixed in the housing 100, and the impeller 220 is rotatably connected in the volute 210, and the rotation axis of the impeller 220 is arranged in the horizontal direction. The driving member is a motor, which is mounted on the volute 210, and the output shaft of the motor is connected to the rotation center of the impeller 220 to drive the impeller 220 to rotate.

[0045] Furthermore, an air inlet 211 is provided on the side of the volute 210, an air outlet is provided on the top of the volute 210, and there is a distance between the side wall of the volute 210 with the air inlet 211 and the shell 100, so that the impeller 220 can extract the oil smoke at the air inlet 211 of the volute 210 and discharge it from the air outlet during the rotation.

[0046] The impeller 220 includes a connecting disk and a plurality of blades. The blades are evenly distributed and fixed on the connecting disk in the circumferential direction. The connecting disk is used to connect with a driving member to drive the impeller 220 to rotate.

[0047] In some embodiments, reference Figure 2 , Figure 3 and Figure 4 The detection component 300 includes a mounting seat 310, an infrared sensor 320 and a reflective layer 330. The reflective layer 330 is coated on any blade of the impeller 220. The mounting seat 310 is set on the volute 210. The infrared sensor 320 is set on the mounting seat 310, and the detection end of the infrared sensor 320 faces the blade of the impeller 220.

[0048] The reflective layer 330 is coated on any blade of the impeller 220 to reflect infrared rays, while other blades on the impeller 220 are set not to reflect infrared rays. Therefore, when the infrared rays emitted by the infrared sensor 320 irradiate the blades of the impeller 220, as the impeller 220 rotates, the infrared sensor 320 can receive the reflected infrared rays only when the blade coated with the reflective layer 330 passes the irradiation point of the infrared sensor 320. At this time, it can be counted as one rotation of the impeller 220, and then the actual rotation speed of the impeller 220 can be obtained to realize the detection of the actual rotation speed of the impeller 220.

[0049] Further, the reflective layer 330 is set to red, and the other blades on the impeller 220 are set to black. In other embodiments, a coating that can absorb infrared rays can also be used to coat the other blades to achieve the same effect.

[0050] In some embodiments, reference Figure 2 An air inlet 211 is provided on the side of the volute 210 , and the mounting seat 310 is arranged on the side of the volute 210 having the air inlet 211 . The infrared rays emitted by the infrared sensor 320 pass through the air inlet 211 and irradiate the blades of the impeller 220 .

[0051] An air inlet ring 212 is installed on the air inlet 211 . The air inlet ring 212 is a circular ring with an arc-shaped outer wall. After the air inlet ring 212 is installed on the volute 210 , it is helpful to reduce the adhesion of oil and dirt on the air inlet 211 .

[0052] The mounting base 310 is fixed to the side of the air inlet 211 on the volute 210 so that the infrared sensor 320 can directly illuminate the blades of the impeller 220 inside the volute 210, so as to detect the rotation speed of the impeller 220. In order to better detect the rotation speed of the impeller 220, the infrared sensor 320 needs to have a certain tilt angle during installation so that infrared rays are emitted toward the inside of the turbine and reflected back to the infrared sensor 320. At this time, the infrared sensor 320 is located between the gap between the air inlet 211 of the volute 210 and the housing 100, so there is enough space to install the infrared sensor 320 without changing the shape of the housing 100.

[0053] In other embodiments, a mounting opening may be opened on the arc wall of the volute 210, and the infrared sensor 320 may be directly mounted on the mounting opening of the arc wall of the volute 210 to emit infrared rays toward the blades of the impeller 220 inside the volute 210, thereby detecting the rotational speed of the impeller 220.

[0054] In some embodiments, reference Figure 2 and Figure 4 The mounting seat 310 includes an arc plate 311 and a connecting seat 312 . The arc plate 311 is arranged on the side of the volute 210 and along the edge of the air inlet 211 . The connecting seat 312 is arranged on the arc plate 311 . The infrared sensor 320 is detachably connected to the connecting seat 312 .

[0055] The arc plate 311 is semicircular in shape, the connecting seat 312 and the arc plate 311 are integrally formed, the infrared sensor 320 is fixed to the connecting seat 312 by bolts, and the connecting seat 312 is located at the end of the arc plate 311 .

[0056] Furthermore, a plurality of fixing members are provided on the arc plate 311 to fix the arc plate 311 on the volute 210. The fixing members are bolts or screws.

[0057] Exemplarily, three fixing members are provided, that is, three screws pass through the arc plate 311 and are connected to the volute 210 to fix the arc plate 311 on the volute 210. The provision of three fixing members is conducive to improving the stability of the installation of the arc plate 311.

[0058] Exemplarily, the angle of the infrared sensor 320 is adjustable, so as to adjust the infrared sensor 320 to a desired angle.

[0059] In some embodiments, reference Figure 2 and Figure 4 , the infrared sensor 320 is arranged obliquely toward the lower part of the impeller 220 .

[0060] The arc plate 311 is installed at the bottom of the air inlet 211, and the infrared sensor 320 is tilted downward toward the impeller 220. The infrared sensor 320 tilted downward reduces the accumulation of oil stains adhering to the detection end of the infrared sensor 320, so as to reduce the occurrence of detection errors.

[0061] In some embodiments, reference Figure 4 and Figure 5The side of the arc plate 311 facing the volute 210 matches the volute 210. The arc plate 311 includes a first connecting portion 3111, a mounting portion 3112, and a second connecting portion 3113 connected in sequence, and the connecting seat 312 is arranged on the mounting portion 3112. The cross-sectional thicknesses of the first connecting portion 3111, the mounting portion 3112, and the second connecting portion 3113 increase in sequence, so as to be closely fitted with the side wall of the volute 210.

[0062] The first connection part 3111, the mounting part 3112 and the second connection part 3113 are integrally formed, and the first connection part 3111, the mounting part 3112 and the second connection part 3113 are sequentially distributed along the cross section. The cross section of the first connection part 3111 is arc-shaped, so as to fit with the raised air inlet ring 212; the mounting part 3112 fits on the side wall of the volute 210; the second connection part 3113 is attached to the edge of the volute 210 and plays a role of limiting. The arrangement of the first connection part 3111 and the second connection part 3113 not only plays a role of positioning, which is convenient for the installation of the arc plate 311; but also increases the width of the arc plate 311, so as to improve the strength of the arc plate 311 and reduce the deformation of the arc plate 311.

[0063] In some embodiments, two connection seats 312 are provided, and the two connection seats 312 are respectively located at two ends of the arc plate 311 .

[0064] The two connection sockets 312 can be used to set up two sensors, providing locations for the installation of the two sensors.

[0065] In some embodiments, reference Figure 6 , reinforcing ribs 3114 are provided on the arc-shaped plate 311 .

[0066] The reinforcing rib 3114 disposed at the bottom of the mounting portion 3112 is beneficial for reducing the weight of the mounting portion 3112 while maintaining good strength and reducing deformation of the mounting portion 3112 .

[0067] In some implementations, the preset value is 90% of the rotation speed of the fan assembly 200 when it is first operated.

[0068] The alarm component 400 includes a display screen and a display area arranged on the display screen, and the display area is used to issue a flashing alarm prompt. A controller or a control chip is installed on the display screen. The infrared sensor 320 transmits the speed information to the display screen to determine the speed of the fan component 200. When it is detected that the speed of the fan component 200 is less than or equal to the preset value, the display panel controls the display area to issue a flashing alarm prompt to remind the cleaning of the fan component 200.

[0069] When the user uses it for the first time, the motor will continue to run at a certain speed. The infrared sensor 320 detects the initial speed, transmits it to the alarm component 400 and records the initial speed as N; thereafter, as long as the user uses the range hood, the infrared sensor 320 will continue to detect the speed of the impeller 220 of the range hood, and transmit it to the alarm component 400 as N1. When N1≥0.9N, it means that the current impeller 220 speed is normal, the range hood has a good smoke-absorbing capacity, and can be used normally; when N1<0.9N, it means that the current motor speed loss is large, the alarm component 400 determines that the motor speed is abnormal, and the cleaning function on the display panel of the alarm component 400 will flash to remind the user to clean the range hood; if the user has cleaned the range hood next time it is used, the reminder function will not flash, and the infrared sensor 320 will continue to detect the speed of the impeller 220. If the user cleans the range hood, the panel cleaning module will continue to flash to remind the user to clean the range hood next time it is used to ensure the user's smoking effect.

[0070] The present application provides a range hood, which detects the rotation speed of the fan component 200 through a detection component 300, and the detection component 300 transmits the detected rotation speed information to the alarm component 400, and the alarm component 400 compares the rotation speed information transmitted by the detection component 300 with a preset value. When the rotation speed of the fan component 200 is less than the preset value, the alarm component 400 issues an alarm prompt message to remind the user to clean the fan component 200; the fan operating status of the range hood is detected in real time by the detection component 300, so that when the fan is stained with too much oil and causes the rotation speed to drop, affecting the smoking effect, the user can be promptly reminded to clean it through the alarm component 400.

[0071] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A range hood, characterized in that: include: A housing, a fan assembly, a detection assembly and an alarm assembly; the fan assembly is arranged in the housing to extract oil smoke; The detection component is arranged on the fan component to detect the rotation speed of the fan component. The alarm component is arranged on the shell. The detection component and the alarm component are electrically connected. When the rotation speed of the fan component is less than or equal to a preset value, the alarm component issues an alarm prompt to clean the fan component.

2. The range hood according to claim 1, characterized in that: The fan assembly includes a volute, an impeller and a driving member. The volute is arranged in the housing. The impeller is rotatably arranged in the volute. The driving member is arranged on the volute to drive the impeller to rotate.

3. The range hood according to claim 2, characterized in that: The detection component includes a mounting seat, an infrared sensor and a reflective layer, the reflective layer is coated on any blade of the impeller, the mounting seat is arranged on the volute, the infrared sensor is arranged on the mounting seat, and the detection end of the infrared sensor faces the blade of the impeller.

4. The range hood according to claim 3, characterized in that: An air inlet is opened on the side of the volute, and the mounting seat is arranged on the side of the volute with the air inlet. The infrared rays emitted by the infrared sensor pass through the air inlet and irradiate on the blades of the impeller.

5. The range hood according to claim 4, characterized in that: The mounting seat includes an arc plate and a connecting seat. The arc plate is arranged on the side of the volute and along the edge of the air inlet. The connecting seat is arranged on the arc plate. The infrared sensor is detachably connected to the connecting seat.

6. The range hood according to claim 3, characterized in that: The infrared sensor is arranged obliquely toward the lower part of the impeller.

7. The range hood according to claim 5, characterized in that: A side of the arc-shaped plate facing the volute matches the volute.

8. The range hood according to claim 5, characterized in that: The connecting seats are provided in two numbers, and the two connecting seats are respectively located at two ends of the arc plate.

9. The range hood according to claim 7, characterized in that: The arc-shaped plate is provided with reinforcing ribs.

10. The range hood according to any one of claims 1 to 9, characterized in that: The alarm component comprises a display screen and a display area arranged on the display screen, and the display area is used to issue a flashing alarm prompt.

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