Fan system and range hood

Abstract

The utility model relates to the technical field of range hood manufacturing, and provides a fan system and a range hood. The draught fan system comprises a volute body and at least one Helmholtz unit, a mounting cavity used for containing a wind wheel is defined in the volute body, and an air suction opening and an air outlet which communicate with the mounting cavity are formed in the volute body; a mounting cavity is formed in the volute body, the Helmholtz unit is arranged on the outer circumference of the volute body, micropores are formed in the outer wall, corresponding to the Helmholtz unit, of the volute body, the micropores are communicated with the mounting cavity and the Helmholtz unit, and the side, away from the volute body, of the Helmholtz unit is open. According to the invention, oil accumulation of the Helmholtz units can be effectively prevented, and the Helmholtz units are convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of range hood manufacturing, in particular to a fan system and a range hood. Background Art

[0002] A range hood is a household appliance that removes and filters waste fumes. Oil is often stored inside. After oxidation, the waste oil will produce oxides or macromolecular complexes with very high viscosity. They are difficult to clean with ordinary cleaning solvents. Therefore, cleaning range hoods has always been a difficult problem in the industry.

[0003] The Helmholtz unit is a commonly used noise reduction structural design unit. However, in a relatively technical field, oil stains can easily enter the interior of the Helmholtz unit and accumulate, and the accumulated oil stains cannot be cleaned. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a fan system, which facilitates the cleaning of the Helmholtz unit.

[0005] The utility model also provides a range hood.

[0006] According to the utility model, the fan system includes:

[0007] A volute body, wherein a mounting cavity for accommodating a wind wheel is defined in the volute body, and an air inlet and an air outlet communicating with the mounting cavity are formed on the volute body;

[0008] At least one Helmholtz unit is arranged on the outer circumference of the volute body, and micropores are arranged on the outer wall of the volute body corresponding to the Helmholtz unit, and the micropores connect the installation cavity and the Helmholtz unit, and the Helmholtz unit is open on the side away from the volute body.

[0009] According to an embodiment of the utility model, the fan system includes a plurality of Helmholtz units, and the plurality of Helmholtz units are periodically arrayed at the top end of the outer circumferential side of the volute body.

[0010] According to an embodiment of the present invention, the plurality of Helmholtz units are arranged along the outer circumference of the volute body, and the distances from the microhole to the opening of at least two of the Helmholtz units are different along the arrangement direction.

[0011] According to an embodiment of the present invention, the diameter of the micropores is less than or equal to 1.5 mm.

[0012] According to an embodiment of the present invention, the distance between two adjacent microholes is greater than the diameter of the microholes.

[0013] According to an embodiment of the present invention, the micro-hole is at least one of a circular hole, an elliptical hole, a triangular hole, a square hole and a long hole.

[0014] According to an embodiment of the present invention, the Helmholtz unit further comprises a resonance cavity, and the resonance cavity is connected with the opening and the micropore.

[0015] According to an embodiment of the present invention, the cross-section of the resonance cavity is in the shape of a circle, an ellipse, a triangle or a square.

[0016] According to an embodiment of the present utility model, the opening and the air outlet face the same side of the volute body.

[0017] According to an embodiment of the utility model, the opening is at least one of a circular opening, an elliptical opening, a triangular opening, a square opening and a long strip opening.

[0018] The utility model also proposes a range hood, which comprises a housing, a top plate and the above-mentioned fan system, wherein the fan system is arranged in the housing, and the top plate cover is arranged at the opening. The fan system comprises a volute body and at least one Helmholtz unit, wherein the volute body defines a mounting cavity for accommodating a wind wheel, and the volute body is formed with an air inlet and an air outlet connected with the mounting cavity; the Helmholtz unit is arranged on the outer circumference of the volute body, and micropores are arranged on the outer wall of the volute body corresponding to the Helmholtz unit, wherein the micropores connect the mounting cavity and the Helmholtz unit, and the Helmholtz unit is arranged in an open position on the side away from the volute body.

[0019] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0020] The present application sets the Helmholtz unit in an open state at one side away from the volute body. During installation, the opening of the Helmholtz unit is sealed by cooperating with the top plate of the range hood or other separately arranged sealing plates. When cleaning is required, the Helmholtz unit can be separated from the top plate of the range hood or other separately arranged sealing plates, and the Helmholtz unit can be cleaned through the opening, thereby greatly reducing the difficulty of cleaning the Helmholtz unit and improving the practicality of the fan system.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a fan system provided by an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 A structural diagram of the blower system from another perspective;

[0025] Figure 3 It is a structural schematic diagram of an embodiment of a range hood provided by the utility model;

[0026] Figure 4 yes Figure 3 A schematic diagram of the structure of the top plate and the front plate not shown;

[0027] Figure 5 yes Figure 3 Cross-sectional view of the range hood.

[0028] Reference numerals:

[0029] 10. Range hood;

[0030] 100, fan system; 110, volute body; 111, installation cavity; 112, air inlet; 113, air outlet; 114, micropores;

[0031] 120, Helmholtz unit; 121, open; 122, resonant cavity;

[0032] 200, housing;

[0033] 300. Top plate. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0035] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model 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 cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] A range hood is a household appliance that removes and filters waste fumes. Oil is often stored inside. After oxidation, the waste oil will produce oxides or macromolecular complexes with very high viscosity. They are difficult to clean with ordinary cleaning solvents. Therefore, cleaning range hoods has always been a difficult problem in the industry.

[0040] The Helmholtz unit is a commonly used noise reduction structural design unit. However, in a relatively technical field, oil stains can easily enter the interior of the Helmholtz unit and accumulate, and the accumulated oil stains cannot be cleaned.

[0041] The utility model provides a fan system and a range hood.

[0042] In the embodiment of the present utility model, Figures 1 to 5 As shown, the fan system 100 includes a volute body 110 and at least one Helmholtz unit 120. The volute body 110 defines an installation cavity 111 for accommodating a wind wheel. The volute body 110 is provided with an air inlet 112 and an air outlet 113 connected to the installation cavity 111. The Helmholtz unit 120 is arranged on the outer circumference of the volute body 110. Micropores 114 are provided on the outer wall of the volute body 110 corresponding to the Helmholtz unit 120. The micropores 114 connect the installation cavity 111 and the Helmholtz unit 120. The side of the Helmholtz unit 120 away from the volute body 110 is open 121.

[0043] The shape design of the volute body 110 is generally to optimize the flow path of the airflow to reduce energy loss and improve the efficiency of the fan. The airflow dynamics can be further optimized by changing the shape and size of the volute body 110 to adapt to different application scenarios. Air inlet 112 and air outlet 113:

[0044] The air inlet 112 is used to inhale external air, while the air outlet 113 discharges the airflow accelerated by the wind wheel. The air inlet 112 and the air outlet together form a channel for the airflow in the fan system 100.

[0045] The position, size and shape of the air inlet 112 and the air outlet 113 can be adjusted as needed to optimize the air intake and exhaust effects. For example, increasing the area of ​​the air inlet 112 can improve the air intake capacity of the fan, while adjusting the angle of the air outlet 113 can change the exhaust direction of the air flow.

[0046] The Helmholtz unit 120 is a resonance chamber for adjusting and optimizing the noise and stability of the airflow. When the airflow enters the Helmholtz unit 120 through the micropores 114, it causes the air column inside to resonate, thereby reducing the noise of a specific frequency and stabilizing the airflow.

[0047] The size, shape and position of the Helmholtz unit 120 can be adjusted to achieve better noise control and airflow stability. In addition, a combination of multiple Helmholtz units 120 can also be considered to cover a wider frequency range.

[0048] The micropores 114 connect the mounting cavity 111 and the Helmholtz unit 120 , allowing airflow to flow freely between the two. The size and number of the micropores 114 have an important influence on the transmission of airflow and the resonance effect of the Helmholtz unit 120 .

[0049] The micropores 114 can be adjusted in size, quantity and distribution to optimize the airflow transfer effect between the volute body 110 and the Helmholtz unit 120. In addition, it is also possible to consider using micropores 114 of different shapes, such as elliptical or rectangular, to further improve the flow characteristics of the airflow.

[0050] The Helmholtz unit 120 is provided with an opening 121, so that oil accumulation inside the Helmholtz unit 120 can be effectively prevented, because even if oil smoke enters, it can be easily disassembled and cleaned due to the opening 121. This reduces the impact of oil pollution on the performance of the Helmholtz unit 120 and increases its service life.

[0051] The present application arranges the Helmholtz unit 120 with an opening 121 on one side away from the volute body 110. During installation, the opening 121 of the Helmholtz unit 120 is sealed by cooperating with the top plate 300 of the range hood 10 or other separately arranged sealing plates. When cleaning is required, the Helmholtz unit 120 can be separated from the top plate 300 of the range hood 10 or other separately arranged sealing plates, and the Helmholtz unit 120 can be cleaned through the opening 121, thereby greatly reducing the difficulty of cleaning the Helmholtz unit 120 and improving the practicality of the fan system 100.

[0052] Reference Figures 1 to 4According to one embodiment of the utility model, the fan system 100 includes a plurality of Helmholtz units 120, and the plurality of Helmholtz units 120 are periodically arrayed at the top of the outer circular side of the volute body 110. It should be noted that the periodic array is a structure composed of repeated units, including one-dimensional periodic arrays and two-dimensional periodic arrays. Annular arrays, rectangular arrays and path-shaped arrays are common forms of periodic arrays, which can be considered as special cases of one-dimensional or two-dimensional arrays. In this embodiment, the micropores can be annular arrays, rectangular arrays and path-shaped arrays as needed, and are not specifically limited here. It can be understood that the periodic array of multiple Helmholtz units 120 can cover a wider frequency range, thereby more effectively reducing noise at different frequencies. Each unit can be optimized for a specific frequency, and when they work together, they can synergistically reduce noise at multiple frequencies and improve the overall performance of the fan. In addition, the design of multiple Helmholtz units 120 can also improve the uniformity and stability of the airflow. Since each unit can adjust and optimize the airflow, when multiple units work together, a more uniform and stable airflow can be generated, thereby improving the efficiency and reliability of the fan. Since the Helmholtz unit 120 is located at the top of the outer circumference of the volute body 110, the oil entering the Helmholtz unit 120 falls naturally under the action of gravity and does not accumulate. When cleaning is required, it can be easily disassembled for cleaning, or cleaned by other appropriate methods to remove the accumulated oil or other impurities.

[0053] Reference Figure 1 to Figure 2 According to one embodiment of the utility model, a plurality of Helmholtz units 120 are arranged along the outer circumference of the volute body 110, and the distances from the micropores 114 to the openings 121 of at least two of the Helmholtz units 120 along the arrangement direction are different. It can be understood that the arrangement of the Helmholtz units 120 along the outer circumference of the volute body 110 can make the Helmholtz units 120 more evenly and effectively distributed in space. By arranging along the outer circumference, the space can be utilized to the maximum extent and the coverage of the sound absorption effect can be improved. A plurality of Helmholtz units 120 of different heights means that they will produce resonance effects at different frequencies. By designing that the distances from the micropores 114 to the openings 121 of at least two of the Helmholtz units 120 along the arrangement direction are different, a wider frequency range can be covered, thereby improving the overall sound absorption effect.

[0054] Reference Figure 1 and Figure 4According to an embodiment of the utility model, the opening 121 and the air outlet 113 are facing the same side of the volute body 110. It can be understood that the air outlet 113 of the range hood 10 is usually set upward to facilitate the rapid discharge of oil smoke from the air outlet 113. In this application, the opening 121 and the air outlet 113 are facing the side of the volute body 110 upward, which is convenient for structural design and also convenient for covering and sealing the opening 121 through the top plate 300, reducing the setting of other components and improving the matching degree of the whole machine.

[0055] According to one embodiment of the utility model, the diameter of the micropore 114 is less than or equal to 1.5 mm. It is understandable that the size of the diameter of the micropore 114 directly affects the resistance and flow rate of the airflow when it passes through. When the diameter of the micropore 114 is too small, the airflow will be subject to greater resistance, resulting in increased energy loss and poor airflow. This may affect the efficiency and performance of the fan. Therefore, setting the diameter of the micropore 114 to be greater than or equal to 1.5 mm can ensure that the airflow can pass smoothly, reduce energy loss, and improve the efficiency of the fan. The size of the diameter of the micropore 114 will also affect the resonance effect of the Helmholtz unit 120. The resonance frequency of the Helmholtz unit 120 is related to the diameter of the micropore 114. A larger diameter of the micropore 114 can reduce the resonance frequency, so that the unit can better suppress low-frequency noise. Therefore, setting the diameter of the micropore 114 to be less than or equal to 1.5 mm can ensure that the Helmholtz unit 120 has a better resonance effect in the low-frequency range, thereby more effectively reducing noise. In addition, when the diameter of the micropore 114 is large, even if a small amount of oil enters the micropore 114, it will not be easily blocked, but will be more easily blown out by the airflow, which helps to keep the micropore 114 and the Helmholtz unit 120 clean and stable in performance.

[0056] Optionally, the diameter of the micropore 114 can be 1.5 mm, 1.4 mm, 1.3 mm, 1.2 mm, 1.1 mm, 1.0 mm, 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.4 mm, 0.3 mm, 0.2 mm or 0.1 mm, etc., and may need to be adjusted according to actual conditions.

[0057] Reference Figure 2According to one embodiment of the utility model, the spacing between two adjacent micropores 114 is greater than the diameter of the micropores 114. It can be understood that the spacing between two adjacent micropores 114 is the distance between the centers of the two micropores 114. When the spacing between two adjacent micropores 114 is greater than the diameter of the micropores 114, the airflow can have more space to diffuse and mix when passing through the micropores 114. This helps to make the airflow enter the Helmholtz unit 120 more evenly and stably, and improve the resonance effect of the airflow in the unit. Secondly, a larger spacing can reduce the airflow interference between the micropores 114. If the spacing between the micropores 114 is too small, the airflow may interfere and conflict with each other when passing through the micropores 114, resulting in energy loss and unstable airflow. By increasing the spacing, this interference can be reduced, allowing the airflow to pass through the micropores 114 more smoothly.

[0058] According to one embodiment of the utility model, the micropores 114 are circular holes, elliptical holes, triangular holes, square holes or long strip holes. It is understandable that micropores 114 of different shapes may also affect the resonance effect of the Helmholtz unit 120. The shape of the micropores 114 can change the way the airflow enters the unit, thereby affecting the vibration and resonance effect of the air column in the unit. By selecting a suitable shape of the micropores 114, the noise control performance of the Helmholtz unit 120 can be further optimized. For example, circular holes have more uniform airflow transfer characteristics, while elliptical holes, triangular holes, square holes or long strip holes may produce more directional or concentrated airflow. This directional or concentrated airflow may be more advantageous in certain specific applications, such as in scenarios where the airflow direction needs to be precisely controlled or the effect of the airflow on a specific area needs to be enhanced.

[0059] Reference Figure 1 and Figure 2 According to one embodiment of the utility model, the Helmholtz unit 120 also includes a resonance cavity 122, which is connected to the opening 121 and the micropores 114. It can be understood that the addition of the resonance cavity 122 enables the Helmholtz unit 120 to better adjust and control the noise and stability of the airflow. When the airflow enters the resonance cavity 122 through the micropores 114, it will produce a resonance effect with the air column in the cavity, thereby reducing the noise of a specific frequency. Optionally, the resonance frequency and effect of the resonance cavity 122 can be adjusted by changing the size, shape and position of the resonance cavity 122 to adapt to different application scenarios and noise control requirements. Make the design and optimization of the fan system 100 more convenient and efficient.

[0060] Reference Figure 1 and Figure 2According to one embodiment of the utility model, the shape of the cross section of the resonance cavity 122 is circular, elliptical, triangular or square. It is understandable that the specific selection of the cross-sectional shape of the resonance cavity 122 should be comprehensively considered according to the actual requirements of the fan system 100 and the airflow characteristics. Different shapes may be suitable for different application scenarios, so they need to be selected according to actual conditions. The cross-sections of the resonance cavity 122 of different shapes will have different effects on the flow of airflow therein and the resonance effect. For example, a circular cross-section has a more uniform airflow distribution and a better resonance effect, which is suitable for scenarios that require noise control in a wide frequency range. An elliptical cross-section may be more suitable for directional control of airflow or optimization for noise of a specific frequency. A resonance cavity 122 with a triangular or square cross-section may produce a more concentrated or directional airflow flow, which is suitable for scenarios that require precise control of the airflow direction or enhancement of the effect of airflow on a specific area.

[0061] Reference Figure 1 According to one embodiment of the utility model, the opening 121 is a circular opening, an elliptical opening, a triangular opening, a square opening or a long strip opening. The specific selection of the shape of the opening 121 should be comprehensively considered according to the actual requirements and airflow characteristics of the fan system 100. Different shapes may be suitable for different application scenarios, so it is necessary to select according to the actual situation. It can also be opened according to the shape of the resonance cavity 122. The shape of the opening 121 can also affect the resonance effect of the Helmholtz unit 120. Openings 121 of different shapes can change the way and speed of airflow entering the unit, thereby affecting the vibration and resonance effect of the air column in the unit. By selecting a suitable shape of the opening 121, the noise control performance of the unit can be further optimized. The circular opening 121 has a relatively uniform airflow distribution characteristic, which is suitable for scenes requiring noise control in a wide frequency range. The elliptical opening may be more suitable for directional control of airflow or optimization for noise of a specific frequency. The triangular opening, square opening or long strip opening may produce more concentrated or directional airflow, which is suitable for scenes requiring precise control of the airflow direction or enhancing the effect of airflow on a specific area.

[0062] The utility model also proposes a range hood 10, which includes a shell 200, a top plate 300 and the above-mentioned fan system 100. The specific structure of the fan system 100 refers to the above-mentioned embodiment. Since the range hood 10 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0063] Reference Figures 3 to 5 The range hood 10 includes a housing 200 , a top plate 300 and the fan system 100 as described above. The fan system 100 is disposed in the housing 200 , and the top plate 300 is covered at the opening 121 .

[0064] The housing 200, as the main structure of the range hood 10, plays the role of fixing and supporting the fan system 100, and also has a certain protective function to prevent external factors from interfering with or damaging the fan system 100. The design of the housing 200 can be adjusted according to actual needs to ensure that it can meet specific usage environments and performance requirements.

[0065] Since the Helmholtz back plate is open, when installed on the range hood 10, the top plate 300 of the range hood 10 will play a sealing role and can be cleaned after being removed to keep the system clean and operate normally, and can also enhance the overall aesthetics and durability of the range hood 10.

[0066] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A fan system, characterized in that: include: A volute body, wherein a mounting cavity for accommodating a wind wheel is defined in the volute body, and an air inlet and an air outlet communicating with the mounting cavity are formed on the volute body; At least one Helmholtz unit is arranged on the outer circumference of the volute body, and micropores are arranged on the outer wall of the volute body corresponding to the Helmholtz unit, and the micropores connect the installation cavity and the Helmholtz unit, and the Helmholtz unit is open on the side away from the volute body.

2. The fan system according to claim 1, characterized in that: The fan system includes a plurality of Helmholtz units, and the plurality of Helmholtz units are periodically arrayed at the top end of the outer circumferential side of the volute body.

3. The fan system according to claim 2, characterized in that: The plurality of Helmholtz units are arranged along the outer circumference of the volute body, and the distances from the microholes to the openings of at least two of the Helmholtz units are different along the arrangement direction.

4. The fan system according to any one of claims 1 to 3, characterized in that: The diameter of the micropores is less than or equal to 1.5 mm.

5. The fan system according to any one of claims 1 to 3, characterized in that: The distance between two adjacent microholes is greater than the diameter of the microholes.

6. The fan system according to any one of claims 1 to 3, characterized in that: The micropores are at least one of circular holes, elliptical holes, triangular holes, square holes and elongated holes.

7. The fan system according to any one of claims 1 to 3, characterized in that: The Helmholtz unit further includes a resonance cavity, which is communicated with the opening and the micropore.

8. The fan system according to claim 7, characterized in that: The cross-section of the resonance cavity is in the shape of a circle, an ellipse, a triangle or a square.

9. The fan system according to any one of claims 1 to 3, characterized in that: The opening and the air outlet face the same side of the volute body.

10. The fan system according to any one of claims 1 to 3, characterized in that: The opening is at least one of a circular opening, an elliptical opening, a triangular opening, a square opening and a long strip opening.

11. A range hood, characterized in that: It comprises a shell, a top plate and the fan system according to any one of claims 1 to 10, wherein the fan system is arranged in the shell, and the top plate cover is arranged at the opening.

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