Range hood

Abstract

The invention provides a range hood. The range hood comprises a fan, a plurality of exhaust fume collecting hoods and air pipes connected with the exhaust fume collecting hoods, the fan is arranged in the range hood; the plurality of exhaust fume collecting hoods are arranged on a shell of the range hood and close to oil fume, and the exhaust fume collecting hoods face the direction of the oil fume; one end of the air pipe is connected with the exhaust fume collecting hood, and the other end of the air pipe is connected with the fan, so that a plurality of corresponding air ducts are formed. And a plurality of air ducts are formed by combining the plurality of exhaust fume collecting hoods and the corresponding air pipes. On one hand, the air duct can play a role in guiding lampblack, and the situation that the lampblack escapes in the range hood and the like is avoided; and on the other hand, the cross sectional area of each of the multiple air ducts is reduced, and according to the corresponding relation between the flow speed and the cross sectional area, the cross sectional area is reduced and the flow speed is increased, so that the gas flow speed in the air ducts is greatly increased, lampblack is prevented from being accumulated in the air ducts, the lampblack suction effect is improved, and the user experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of household appliances, and in particular, to an oil fume extractor. Background Art

[0002] The oil fume extraction effect of an oil fume extractor is closely related to the user's cooking experience. During the cooking process of Chinese cuisine, a large amount of oil fume is generated. Currently, the oil fume extractors on the market are prone to accumulate in the air duct of the oil fume extractor during the oil fume discharge process, resulting in poor oil fume extraction effect. Summary of the Invention

[0003] In order to solve the problem of poor oil fume extraction effect in the prior art, the present disclosure provides an oil fume extractor.

[0004] An embodiment of the present disclosure provides an oil fume extractor, which includes a fan, a plurality of smoke collecting hoods, and an air duct connected thereto;

[0005] The fan is arranged inside the oil fume extractor;

[0006] A plurality of smoke collecting hoods are arranged on the outer shell of the oil fume extractor near the oil fume, and the smoke collecting hoods face the direction of the oil fume;

[0007] One end of the air duct is connected to the smoke collecting hood, and the other end of the air duct is connected to the fan to form a plurality of corresponding air ducts.

[0008] In one embodiment, the oil fume extractor further includes an air box;

[0009] The air box is arranged inside the oil fume extractor. A cavity for accommodating the fan is arranged inside the air box, and the air box is connected to the air duct.

[0010] In one embodiment, a closing plate penetrating into the air box is arranged at the first end of the air box, and the closing plate is of a hollow structure;

[0011] An air outlet is arranged at one end of the closing plate located inside the air box, and the air outlet of the closing plate is connected to the air inlet of the fan;

[0012] A plurality of air inlets are arranged at one end of the closing plate located outside the air box, and the air inlets are connected to the corresponding air ducts.

[0013] In one embodiment, the oil fume extractor further includes an exhaust pipe;

[0014] An opening is arranged at the second end of the air box, and the exhaust pipe passes through the opening and is connected to the air outlet of the fan.

[0015] In one embodiment, a one-way air valve is arranged at the air inlet of the exhaust pipe;

[0016] And / or, a one-way air valve is arranged at the air outlet of the fan.

[0017] In one embodiment, the size of the smoke collecting hood falls within a preset size range, and the size of the air duct has a preset relationship with the size of the smoke collecting hood.

[0018] In one embodiment, the range hood further includes a receiving plate;

[0019] The receiving plate is disposed on the housing of the range hood near the oil fume, and a plurality of smoke collecting hoods are distributed on the receiving plate.

[0020] In one embodiment, the range hood further includes an oil fume sensor and a controller;

[0021] The controller is electrically connected to the oil fume sensor and the blower respectively. The controller is configured to receive the oil fume concentration signal collected by the oil fume sensor, and generate a corresponding wind speed control signal according to the oil fume concentration signal and send it to the blower.

[0022] In one embodiment, the range hood further includes an interaction component and a controller;

[0023] The controller is electrically connected to the interaction component and the blower respectively. The controller is configured to receive the interaction signal collected by the interaction component, and generate a corresponding wind speed control signal according to the interaction signal and send it to the blower.

[0024] In one embodiment, a solenoid valve is disposed in the air duct, and the solenoid valve is used to control the conduction or closing of the air duct.

[0025] The range hood provided by the present disclosure has the following technical effects:

[0026] A plurality of air ducts are formed by combining a plurality of smoke collecting hoods and corresponding air ducts. On the one hand, the air ducts can play a guiding effect on the oil fume, avoiding situations such as the escape of oil fume in the range hood; on the other hand, the cross-sectional area of each air duct in the plurality of air ducts is reduced. According to the corresponding relationship between the flow velocity and the cross-sectional area, when the cross-sectional area is reduced, the flow velocity increases, so that the gas flow velocity in the air duct increases significantly, avoiding the accumulation of oil fume in the air duct, thereby improving the oil fume extraction effect and enhancing the user experience.

[0027] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1It is a first perspective view of a range hood provided by an exemplary embodiment of the present disclosure;

[0030] Figure 2 It is a front view of a range hood provided by an exemplary embodiment of the present disclosure;

[0031] Figure 3 It is a second perspective view of a range hood provided by an exemplary embodiment of the present disclosure;

[0032] Figure 4 It is a schematic structural view of the air box of the range hood provided by an exemplary embodiment of the present disclosure;

[0033] Figure 5 It is a schematic structural view of the fan of the range hood provided by an exemplary embodiment of the present disclosure;

[0034] Figure 6 It is a schematic structural view of the smoke collecting hood and the air duct of the range hood provided by an exemplary embodiment of the present disclosure;

[0035] Figure 7 It is a bottom view of a range hood provided by an exemplary embodiment of the present disclosure. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] An exemplary embodiment of the present disclosure provides a range hood. Refer to Figure 1 , the range hood includes a fan 10, a plurality of smoke collecting hoods 20 and air ducts 30 connected thereto.

[0039] The blower 10 is disposed inside the range hood. A plurality of smoke collecting hoods 20 are disposed on the outer shell of the range hood at positions close to the cooking fumes, and the smoke collecting hoods 20 face the direction of the cooking fumes. One end of the air duct 30 is connected to the smoke collecting hood 20, and the other end of the air duct 30 is connected to the blower 10 to form a plurality of corresponding air ducts. The arrows in the figure represent the flow direction of the cooking fumes in the range hood.

[0040] Taking the ceiling-mounted range hood as an example, Figure 2 a structural schematic of the outer shell of the range hood is given. The smoke collecting hood 20 can be disposed on the receiving plate 53 of the range hood; taking the range hood disposed on the integrated stove as an example, the smoke collecting hood 20 can be disposed on the baffle in front of the gas stove. The above positions are all positions on the outer shell of the range hood close to the cooking fumes.

[0041] Under the action of the blower 10, the cooking fumes generated during the cooking process enter the range hood through the smoke collecting hood 20, pass through the air duct 30 to the blower 10, and are discharged from the air outlet of the blower 10.

[0042] The range hood provided in this embodiment forms a plurality of air ducts through the combination of a plurality of smoke collecting hoods 20 and air ducts 30. According to the calculation formula of the gas flow rate in the channel: gas flow rate = gas flow / channel cross-sectional area, it can be seen that when the cross-sectional area of the channel is smaller, the corresponding gas flow rate is larger. Refer to Figure 1 and Figure 3 , the arrows in the figure are the flow direction of the cooking fumes in the range hood. It can be seen that compared with the traditional single air duct form, the cross-sectional area of each air duct in this embodiment is effectively reduced. Therefore, the gas flow rate in each air duct is effectively increased, thereby avoiding the accumulation of cooking fumes in each air duct.

[0043] In this embodiment, a plurality of air ducts are formed through the combination of a plurality of smoke collecting hoods 20 and corresponding air ducts 30. On the one hand, the air ducts can play a guiding effect on the cooking fumes, avoiding the escape of cooking fumes in the range hood; on the other hand, the cross-sectional area of each air duct in the plurality of air ducts is reduced. According to the corresponding relationship between the flow rate and the cross-sectional area, when the cross-sectional area is reduced, the flow rate increases, so that the gas flow rate in the air duct is greatly increased, avoiding the accumulation of cooking fumes in the air duct, and thus improving the fume extraction effect and the user experience.

[0044] In one embodiment, the size of the smoke collecting hood 20 falls within a preset size range. The preset size range is set according to the installation position of the smoke collecting hood 20 and the number of the smoke collecting hoods 20.

[0045] In addition, the size of the air duct 30 has a preset relationship with the size of the smoke collecting hood 20. Regarding the size of the air duct 30, it can be set according to the required gas flow rate. However, the size of the air duct 30 is not the smaller the better, and it needs to match the size of the smoke collecting hood 20. Therefore, the preset relationship can be a positive correlation, that is, the larger the size of the smoke collecting hood 20, the larger the size of the air duct 30 accordingly, and vice versa.

[0046] In one embodiment, referring to Figure 4 , the range hood further includes a wind box 40. The wind box 40 is disposed inside the range hood. A cavity for accommodating the fan 10 is provided inside the wind box 40 (the fan 10 is disposed in the cavity of the wind box 40 and is not shown in the figure), and the wind box 40 is connected to the air duct 30.

[0047] Specifically, the connection form between the wind box 40 and the air duct 30 will be further described:

[0048] A closing plate 41 penetrating into the wind box 40 is provided at the first end of the wind box 40. The closing plate 41 is of a hollow structure for gas to flow through the closing plate 41. An air outlet is provided at one end of the closing plate 41 located inside the wind box 40. The air outlet of the closing plate 41 is connected to the air inlet 11 of the fan 10. The structure of the fan 10 can be referred to Figure 5 . A plurality of air inlets 411 are provided at one end of the closing plate 41 located outside the wind box 40. The air inlets 411 are connected to the corresponding air ducts 30. The structure of the air ducts 30 can be referred to Figure 6 , and the sizes, positions, etc. of the air inlets 411 all match the corresponding air ducts 30.

[0049] Specifically, the structure of the wind box 40 will be further described:

[0050] Referring to Figure 4 and Figure 5 , the range hood further includes an exhaust pipe 50. An opening 42 is provided at the second end of the wind box 40. The exhaust pipe 50 passes through the opening 42 and is connected to the air outlet 12 of the fan 10. The exhaust pipe 50 is used to discharge the oil fume from the range hood.

[0051] In order to prevent the oil fume in the range hood from flowing back during the oil fume suction process or when the range hood ends operation, resulting in oil fume overflow and affecting the user experience. A one-way air valve 51 is provided at the air inlet of the exhaust pipe 50.

[0052] In addition, the one-way air valve can also be provided at the air outlet of the fan. There is no special limitation in this embodiment.

[0053] In the above embodiment, the wind box 40 is a closed space. Therefore, the connection between each component should be tight and the opening sizes at the connection points are the same. To prevent the oil fume inhaled by the fan from escaping inside the range hood and affecting the oil fume extraction effect.

[0054] In one embodiment, referring to Figure 2 and Figure 7 , the range hood further includes a receiving plate 53. The receiving plate 60 is disposed on the housing of the range hood at a position close to the oil fume, and a plurality of smoke collecting hoods 20 are distributed on the receiving plate 60.

[0055] In an implementable manner, as Figure 7 shown, the range hood further includes an oil fume sensor 60 and a controller.

[0056] The controller is electrically connected to the oil fume sensor 60 and the blower 10 respectively. The controller is configured to receive the oil fume concentration signal collected by the oil fume sensor 60, and generate a corresponding wind speed control signal according to the oil fume concentration signal and send it to the blower 10 to control the wind speed of the blower according to the oil fume concentration. When the oil fume concentration is small, the wind speed of the blower is appropriately reduced. When the oil fume concentration is large, the wind speed of the blower is appropriately increased, which can reduce the energy waste caused by a single wind speed while not affecting the oil fume extraction effect.

[0057] In an implementable manner, as Figure 7 shown, the range hood further includes an interaction component 70 and a controller.

[0058] The controller is electrically connected to the interaction component 70 and the blower 10 respectively. The controller is configured to receive the interaction signal collected by the interaction component 70, and generate a corresponding wind speed control signal according to the interaction signal and send it to the blower 10 to control the wind speed of the blower 1 according to the user interaction instruction to meet the user's needs.

[0059] For example, the interaction component 70 can be a button, including but not limited to: "start" key, "close" key, "increase" key, "decrease" key, etc. When the user selects the "increase" key, the controller generates a wind speed control signal for increasing the wind speed and sends it to the blower 10 to increase the wind speed of the blower, and so on.

[0060] In one embodiment, in order to prevent the oil fume in the range hood from flowing back during the oil fume extraction process, or to be able to control the number of air ducts 30 according to the oil fume extraction requirements, a solenoid valve is provided in the air duct 30. The solenoid valve is used to control the conduction or closing of the air duct. When the solenoid valve is opened, the air duct 30 is conductive. When the solenoid valve is closed, the air duct 30 is closed. Thus, the conduction of the air duct can be controlled according to the specific oil fume extraction requirements.

[0061] It should be noted that the above order of the embodiments of the present disclosure is only for description and does not represent the superiority or inferiority of the embodiments. And the above specific embodiments of this specification have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0062] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0063] The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A range hood, characterized in that: The range hood comprises a fan, a plurality of fume collecting hoods and an air duct connected thereto; The fan is arranged inside the range hood; A plurality of fume collecting hoods are arranged on the housing of the range hood near the oil fume, and the fume collecting hoods face the direction of the oil fume; One end of the air duct is connected to the smoke collecting hood, and the other end of the air duct is connected to the fan to form a plurality of corresponding air ducts.

2. The range hood according to claim 1, characterized in that: The range hood also includes a bellows; The bellows is arranged inside the range hood, a cavity for accommodating the fan is arranged inside the bellows, and the bellows is connected to the air duct.

3. The range hood according to claim 2, characterized in that: The first end of the bellows is provided with a closing plate penetrating into the bellows, and the closing plate is a hollow structure; An air outlet is provided on one end of the closing plate located inside the wind box, and the air outlet of the closing plate is connected to the air inlet of the fan; A plurality of air inlets are provided on one end of the closing plate located outside the bellows, and the air inlets are connected to corresponding air ducts.

4. The range hood according to claim 2, characterized in that: The range hood also includes a smoke exhaust pipe; The second end of the wind box is provided with an opening, and the smoke exhaust pipe passes through the opening and is connected to the air outlet of the fan.

5. The range hood according to claim 4, characterized in that: The air inlet of the smoke exhaust pipe is provided with a one-way air valve; And / or, the air outlet of the fan is provided with a one-way air valve.

6. The range hood according to any one of claims 1 to 5, characterized in that: The size of the smoke hood falls within a preset size range, and the size of the air duct is in a preset relationship with the size of the smoke hood.

7. The range hood according to claim 1, characterized in that: The range hood further comprises a receiving plate; The receiving plate is arranged on the outer shell of the range hood at a position close to the oil smoke, and a plurality of the smoke collecting hoods are distributed on the receiving plate.

8. The range hood according to claim 1, characterized in that: The range hood also includes a fume sensor and a controller; The controller is electrically connected to the oil fume sensor and the fan respectively, and is used to receive the oil fume concentration signal collected by the oil fume sensor, and generate a corresponding wind speed control signal according to the oil fume concentration signal and send it to the fan.

9. The range hood according to claim 1, characterized in that: The range hood further comprises an interaction component and a controller; The controller is electrically connected to the interactive component and the fan respectively, and is used to receive the interactive signal collected by the interactive component, and generate a corresponding wind speed control signal according to the interactive signal and send it to the fan.

10. The range hood according to claim 1, characterized in that: A solenoid valve is arranged in the air duct, and the solenoid valve is used to control the opening or closing of the air duct.

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