Fan system and range hood

Abstract

The utility model relates to the technical field of kitchen appliances, and specifically discloses a fan system and a range hood, the fan system comprising a fan housing, an impeller and a motor, the fan housing comprising an air duct bottom plate, and two end plates relatively arranged at both ends of the air duct bottom plate, and the air duct bottom plate and the two end plates are arranged to form an air duct for accommodating the impeller, the motor is fixed to one end plate and is drivingly connected to the impeller, the fan housing further comprises a plurality of flexible buffers, both end plates are connected to the buffers, and each buffer is connected to the air duct bottom plate. The vibration generated when the motor is working can be buffered by the buffers to absorb energy, thereby reducing the vibration that continues to be transmitted to the main box, and can effectively reduce the generation of abnormal noise.

Description

Technical Field

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

[0002] During the operation of the range hood, different degrees of "abnormal noise" may occur according to the actual use environment and the assembly relationship of the machine parts. The so-called "abnormal noise" is relative to the inevitable "basic noise" that exists in any machine. In essence, it is not necessarily caused by the inherent excitation source inside the machine. Most of the time, it is caused by some kind of fault inside the machine. In other words, the abnormal noise is the external manifestation of the unreasonable assembly relationship inside the machine. When the abnormal noise exists, the user will feel that the range hood makes a harsh sound.

[0003] Specifically, the core components of the range hood related to the abnormal sound transmission path mainly include the range hood motor, impeller, fan housing, main chassis and smoke hood. Among them, the motor is installed in the fan housing and is connected to the impeller in a transmission manner. The fan housing is fixed inside the main chassis, and the smoke hood is fixed to the lower part of the main chassis. The motor serves as the power source inside the range hood, and it drives the impeller to rotate and do work. At the same time, it will also generate the source of vibration, and the vibration is the source of the abnormal sound. In the prior art, the fan housing usually adopts a rigid housing, and the fan housing and the main chassis, as well as the main chassis and the smoke hood, are rigidly connected, so that the vibration generated when the motor drives the impeller to rotate is easily transmitted to the fan housing and continues to be transmitted to the main chassis and the smoke hood. As the vibration transmission path is extended, the number of positions where the vibration passes through unreasonable assembly relationships will increase, and the probability of abnormal sound generation will increase.

[0004] Therefore, there is an urgent need for a fan system and a range hood to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a fan system and a range hood to reduce the probability of abnormal noise.

[0006] On the one hand, the utility model provides a fan system, which includes a fan housing, an impeller and a motor, the fan housing including an air duct bottom plate and two end plates relatively arranged at both ends of the air duct bottom plate, and the air duct bottom plate and the two end plates are arranged to form an air duct for accommodating the impeller, the motor is fixed to one of the end plates and is drivingly connected to the impeller, the fan housing also includes a plurality of flexible buffer parts, the two end plates are connected to the buffer parts, and each of the buffer parts is connected to the air duct bottom plate.

[0007] As a preferred technical solution for the fan system, the fan housing also includes a side panel connected at an angle to one of the end plate and the air duct bottom plate, the side panel is spaced apart from the other of the end plate and the air duct bottom plate, and the side panel is embedded in the buffer.

[0008] As a preferred technical solution for the fan system, the side panel is connected to the end panel, and the fan housing further includes a connector, which is simultaneously passed through the side panel and the buffer, and is connected to the air duct bottom plate.

[0009] As a preferred technical solution for the fan system, the buffer component includes a first fitting surface and a second fitting surface intersecting at an angle, and a transition surface intersecting with the first fitting surface and the second fitting surface respectively. The buffer component is located in the air duct, and the first fitting surface is fitted with the end plate, and the second fitting surface is fitted with the bottom plate of the air duct.

[0010] As a preferred technical solution for the fan system, the transition surface is a curved surface.

[0011] The fan system provided by the utility model has at least the following beneficial effects:

[0012] The fan system includes a fan housing, an impeller and a motor. The fan housing includes a duct bottom plate and two end plates arranged at both ends of the duct bottom plate. The duct bottom plate and the two end plates are arranged to form a duct for accommodating the impeller. The motor is fixed to one end plate and is connected to the impeller. The fan housing also includes a plurality of flexible buffers. Both end plates are connected to the buffers, and each buffer is connected to the duct bottom plate. The vibration generated by the motor when working can be buffered by the buffers, thereby reducing the vibration that continues to be transmitted to the main box, which can effectively reduce the generation of abnormal noise.

[0013] On the other hand, the utility model provides a range hood, comprising the fan system in any of the above solutions, the range hood further comprising a main box for accommodating the fan system;

[0014] The fan housing also includes a mounting flange, which is respectively connected to the air duct bottom plate and the two end plates and is located at the outlet end of the air duct, and the mounting flange is fixed to the main box.

[0015] As a preferred technical solution of the range hood, the range hood further comprises a plurality of support plates, wherein a first end of the support plate is supported on the main chassis, and a second end of the support plate is connected to the fan housing.

[0016] As a preferred technical solution of the range hood, the second end of the support plate is embedded in the buffer component, and the support plate and the buffer component are integrally formed.

[0017] As a preferred technical solution of the range hood, the support plate is provided with a plurality of noise reduction holes; or,

[0018] The connection between the support plate and the fan housing, and the mounting flange are respectively located on both sides of the motor.

[0019] As a preferred technical solution of the range hood, the first end of the support plate is fixed to the main chassis; or,

[0020] The range hood further comprises an elastic member connected between the first end of the support plate and the main housing.

[0021] The range hood provided by the utility model has at least the following beneficial effects:

[0022] The range hood adopts the above-mentioned fan system, which can effectively reduce the vibration that is further transmitted to the main chassis, thereby avoiding and reducing the generation of abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the range hood in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the range hood in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 3 The structure of the fan system in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 4 The structure of the fan system in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 5 A cross-sectional view of a partial structure of a range hood in an embodiment of the utility model;

[0028] Figure 6 for Figure 5 Magnified view at A in the middle.

[0029] In the figure:

[0030] 1. Fan system; 11. Fan housing; 111. Air duct bottom plate; 112. End plate; 113. Buffer; 1131. First fitting surface; 1132. Second fitting surface; 1133. Transition surface; 114. Mounting flange; 115. Side plate; 116. Connector; 12. Impeller; 13. Motor;

[0031] 2. Main chassis;

[0032] 3. Smoke hood;

[0033] 4. Support plate; 41. Noise reduction hole. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing 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 a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] The present embodiment also provides a range hood, which may specifically be a top-suction range hood, a side-suction range hood, etc., and may be used in a kitchen to handle fumes generated during cooking.

[0039] Specifically, Figures 1 to 4 As shown, the range hood includes a fan system 1 and a main box 2 for accommodating the fan system 1; the fan system 1 includes a fan housing 11, an impeller 12 and a motor 13, the fan housing 11 includes an air duct bottom plate 111, two end plates 112 arranged at both ends of the air duct bottom plate 111, and a mounting flange 114, the air duct bottom plate 111 and the two end plates 112 are arranged to form an air duct for accommodating the impeller 12, the motor 13 is fixed to one of the end plates 112 and is in transmission connection with the impeller 12, the mounting flange 114 is respectively connected to the air duct bottom plate 111 and the two end plates 112 and is located at the outlet end of the air duct, and the mounting flange 114 is fixed to the main box 2. The motor 13 drives the impeller 12 to rotate, which can generate suction to absorb the oil smoke generated during cooking.

[0040] Optionally, the range hood further comprises a fume hood 3 connected to the main chassis 2. Driven by the fan, the fume can sequentially pass through the fume hood 3 and the main chassis 2 and enter the air duct in the fan, and then be discharged into the exhaust pipe.

[0041] In the prior art, the fan casing is usually a rigid casing, and a rigid connection is adopted between the fan casing and the main case, as well as between the main case and the smoke hood. As a result, the vibration generated when the motor drives the impeller to rotate is easily transmitted to the fan casing and continues to be transmitted to the main case and the smoke hood. As the vibration transmission path is extended, the vibration will increase when it passes through positions with unreasonable assembly relationships, thereby increasing the probability of abnormal noise.

[0042] In this regard, in this embodiment, the fan housing 11 further includes a plurality of flexible buffers 113, and the two end plates 112 are connected to the buffers 113, and each buffer 113 is connected to the air duct bottom plate 111. The vibration generated when the motor 13 is working can be buffered by the buffer 113 to absorb energy, thereby reducing the vibration that continues to be transmitted to the main box 2, which can effectively reduce the generation of abnormal noise. Among them, the buffer 113 can be made of a flexible material such as rubber or silicone.

[0043] In addition, a plurality of buffer members 113 may be provided between each end plate 112 and the air duct bottom plate 111 at intervals, or only one buffer member 113 may be provided. When only one buffer member 113 is provided, the length of the buffer member 113 is adapted to the length of the air duct bottom plate 111 .

[0044] Alternatively, if Figure 5 and Figure 6As shown, the fan housing 11 further includes a side plate 115 connected to the end plate 112 at an angle, the side plate 115 is spaced apart from the air duct bottom plate 111, and the side plate 115 is embedded in the buffer 113. Such a configuration can improve the connection strength between the air duct and the buffer 113. In other embodiments, the side plate 115 can also be configured to be connected to the air duct bottom plate 111 and spaced apart from the end plate 112.

[0045] Alternatively, if Figure 6 As shown, the fan housing 11 also includes a connector 116, which is simultaneously provided on the side plate 115 and the buffer 113, and the connector 116 is connected to the air duct bottom plate 111. By providing the connector 116 to connect the side plate 115, the buffer 113 and the air duct bottom plate 111 together, the connection strength between the air duct bottom plate 111 and the end plate 112 can be ensured. In this embodiment, the connector 116 is a rivet. In other embodiments, the connector 116 can also be set as a bolt.

[0046] Optionally, the buffer 113 includes a first fitting surface 1131 and a second fitting surface 1132 intersecting at an angle, and a transition surface 1133 intersecting with the first fitting surface 1131 and the second fitting surface 1132 respectively, the buffer 113 is located in the air duct, and the first fitting surface 1131 fits with the end plate 112, and the second fitting surface 1132 fits with the air duct bottom plate 111. Such an arrangement can ensure that the matching effect between the buffer 113 and the air duct bottom plate 111 and the end plate 112 is stable, thereby ensuring the buffering effect on vibration. Preferably, the transition surface 1133 is an arc surface. Such an arrangement can make the air duct smoother, avoid vortices caused by right angles of the edges, and thus improve the air duct performance.

[0047] Optionally, the range hood further comprises a plurality of support plates 4, the first ends of the support plates 4 are supported on the main chassis 2, and the second ends of the support plates 4 are connected to the fan housing 11. By providing the support plates 4, the structural strength between the air duct housing and the main chassis 2 can be enhanced, thereby enhancing the rationality of the assembly relationship and avoiding the generation of abnormal noise.

[0048] In this embodiment, the first end of the support plate 4 can be directly fixed to the main chassis 2. As an alternative, the first end of the support plate 4 can also be connected to the main chassis 2 through an elastic member. In this way, the vibration between the main chassis 2 and the fan housing 11 can also be buffered by the elastic member.

[0049] In this embodiment, the second end of the support plate 4 is connected to the buffer 113. This arrangement can also buffer the vibration transmitted between the support plate 4 and the fan housing 11 through the buffer 113. As an alternative, the second end of the support plate 4 can also be connected to the air duct bottom plate 111 or the end plate 112.

[0050] In addition, the support plate 4 can be made of a hard material or a flexible material. When the support plate 4 is made of a flexible material, the support plate 4 itself can also buffer the vibration between the fan housing 11 and the support plate 4 .

[0051] Optionally, the support plate 4 and the buffer 113 are integrally formed, which can not only ensure the connection strength between the support plate 4 and the buffer 113, but also reduce the number of parts and components, thereby improving the assembly efficiency of the fan system 1. Specifically, the support plate 4 and the buffer 113 can be integrally formed by a vulcanization process. Of course, in other embodiments, the support plate 4 and the buffer 113 can also be separately provided as needed.

[0052] Optionally, the support plate 4 is provided with a plurality of noise reduction holes 41. By providing the noise reduction holes 41, the sound in the main chassis 2 can be reduced. Among them, the shape of the noise reduction holes 41 can be set according to actual needs, such as diamond, hexagon, etc. In addition, the size and number of the noise reduction holes 41 can also be set according to actual needs.

[0053] Optionally, the connection between the support plate 4 and the fan housing 11, and the mounting flange 114 are respectively located on both sides of the motor 13. In this way, the main box 2 can support the fan housing 11 from both sides of the motor 13 through the support plate 4 and the mounting flange 114 to ensure the reliability of the support, thereby reducing the vibration and abnormal sound generated when the motor 13 is working. Specifically, in this embodiment, an exemplary solution is given in which the mounting flange 114 is located at the top of the fan housing 11, and the connection between the support plate 4 and the fan housing 11 is located at the bottom of the fan housing 11. Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A fan system, comprising a fan housing (11), an impeller (12) and a motor (13), wherein the fan housing (11) comprises an air duct bottom plate (111) and two end plates (112) arranged at opposite ends of the air duct bottom plate (111), and the air duct bottom plate (111) and the two end plates (112) are arranged to form an air duct for accommodating the impeller (12), and the motor (13) is fixed to one of the end plates (112) and is drivingly connected to the impeller (12), characterized in that: The fan housing (11) further comprises a plurality of flexible buffer components (113), the two end plates (112) are both connected to the buffer components (113), and each buffer component (113) is connected to the air duct bottom plate (111).

2. The fan system according to claim 1, characterized in that: The fan housing (11) further comprises a side plate (115) connected at an angle to one of the end plate (112) and the air duct bottom plate (111); the side plate (115) is spaced apart from the other of the end plate (112) and the air duct bottom plate (111), and the side plate (115) is embedded in the buffer (113).

3. The fan system according to claim 2, characterized in that: The side plate (115) is connected to the end plate (112), and the fan housing (11) further comprises a connecting piece (116), wherein the connecting piece (116) is simultaneously passed through the side plate (115) and the buffer piece (113), and the connecting piece (116) is connected to the air duct bottom plate (111).

4. The fan system according to any one of claims 1 to 3, characterized in that: The buffer component (113) comprises a first fitting surface (1131) and a second fitting surface (1132) intersecting at an angle, and a transition surface (1133) intersecting the first fitting surface (1131) and the second fitting surface (1132) respectively. The buffer component (113) is located in the air duct, and the first fitting surface (1131) fits with the end plate (112), and the second fitting surface (1132) fits with the air duct bottom plate (111).

5. The fan system according to claim 4, characterized in that: The transition surface (1133) is an arc-shaped surface.

6. A range hood, characterized in that: Comprising the fan system according to any one of claims 1 to 5, the range hood further comprising a main box (2) for accommodating the fan system; The fan housing (11) further comprises a mounting flange (114), wherein the mounting flange (114) is respectively connected to the air duct bottom plate (111) and the two end plates (112) and is located at the outlet end of the air duct, and the mounting flange (114) is fixed to the main housing (2).

7. The range hood according to claim 6, characterized in that: The range hood further comprises a plurality of support plates (4), wherein a first end of the support plate (4) is supported on the main housing (2), and a second end of the support plate (4) is connected to the fan housing (11).

8. The range hood according to claim 7, characterized in that: The second end of the support plate (4) is embedded in the buffer component (113), and the support plate (4) and the buffer component (113) are integrally formed.

9. The range hood according to claim 7, characterized in that: The support plate (4) is provided with a plurality of noise reduction holes (41); or, The connection between the support plate (4) and the fan housing (11), and the mounting flange (114) are respectively located on both sides of the motor (13).

10. The range hood according to claim 7, characterized in that: The first end of the support plate (4) is fixed to the main chassis (2); or, The range hood further comprises an elastic member, wherein the elastic member is connected between the first end of the support plate (4) and the main housing (2).

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