Fan and range hood

Abstract

The utility model discloses a fan and a range hood. The fan comprises a volute and a flow guide part, an air outlet is formed in the top of the volute in the first direction, an air inlet is formed in the side of the volute in the second direction, the flow guide part is detachably installed at the bottom of the volute in the first direction, and an arc-shaped flow guide face is formed at the end, away from the air outlet, of the flow guide part. The flow guide piece extends from one end of the volute to the other end of the volute in the third direction, and noise reduction holes are formed in the flow guide piece in a penetrating mode. Wherein the first direction, the second direction and the third direction are perpendicular to one another. According to the fan, the flow guide part is arranged at the bottom, deviating from the air outlet, of the volute, air can be guided to the air inlet in the side of the volute in the second direction through the arc-shaped flow guide face of the flow guide part, and the flow guide effect is good due to the fact that one end, provided with the volute, of the flow guide part extends to the other end in the third direction; therefore, vortexes and turbulent flow formed at the volute are reduced to a great extent, and the noise reduction holes are formed in the flow guide part, so that a good noise reduction effect is achieved.

Description

Technical Field

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

[0002] The range hood is an indispensable appliance in the kitchen. It is usually installed above or on the side of the stove to absorb the fumes generated by the user during cooking. The main box and the fume hood are essential parts of the range hood. The main box is equipped with a fan, which can generate negative pressure in the main box when it works, thereby sucking the fumes into the fume hood. There is an oil net in the fume hood. When the airflow climbs from the oil net to the volute of the fan, eddy and turbulent flow will occur. The instability of the flow field will cause the range hood to generate a lot of noise when it is working, thus affecting the improvement of the overall performance of the range hood.

[0003] Therefore, how to propose a fan and range hood that can improve the flow field at the volute and reduce working noise is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The first object of the utility model is to provide a fan, which not only reduces the vortex and turbulence formed at the volute, but also reduces the working noise.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A fan comprises: a volute, wherein the volute is provided with an air outlet at the top in a first direction, and the volute is provided with an air inlet on the side in a second direction; a flow guide, wherein the flow guide is detachably mounted on the bottom of the volute in the first direction, an arc-shaped flow guide surface is formed at one end of the flow guide facing away from the air outlet, the flow guide extends from one end of the volute to the other end in a third direction, and a noise reduction hole is penetrated through the flow guide; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0007] Preferably, the guide member includes an arc-shaped guide plate and two supporting side plates, the two ends of the arc-shaped guide plate are respectively connected to the two supporting side plates, the outer wall surface of the arc-shaped guide plate is the arc-shaped guide surface, and the noise reduction hole is arranged through the arc-shaped guide plate.

[0008] Preferably, a plurality of the noise reduction holes are provided, and the plurality of the noise reduction holes are evenly distributed on the arc-shaped guide plate.

[0009] Preferably, a first connecting hole is provided on the supporting side plate, a second connecting hole is provided on the volute, and a first connecting member passes through the first connecting hole and the second connecting hole to connect the volute and the guide member.

[0010] Preferably, the first connecting holes and the second connecting holes are provided in plurality and are arranged one-to-one, the plurality of the first connecting holes are arranged at intervals on the supporting side plate, the plurality of the second connecting holes are arranged at intervals on the volute, and each group of the first connecting holes and the second connecting holes is penetrated by one of the first connecting members.

[0011] Preferably, a first connecting hole is provided on the supporting side plate, and the fan also includes a connecting frame with an adjustable connecting angle, one end of the connecting frame is mounted on the outer wall surface of the volute, and a third connecting hole is provided on the other end of the connecting frame, and a second connecting member passes through the first connecting hole and the third connecting hole to connect the connecting frame and the guide member.

[0012] Preferably, the first connection holes and the third connection holes are provided in plurality and are arranged in one-to-one correspondence, and each group of the first connection holes and the third connection holes is penetrated by one of the second connection members.

[0013] Preferably, the connecting frame comprises a first plate, a second plate and a third plate which are connected at an angle and the angle is adjustable, the first plate is connected to the volute, and the third connecting hole is arranged on the third plate.

[0014] Preferably, the fan further comprises a sound absorbing member, and the sound absorbing member is arranged on the inner side of the flow guide member facing the volute.

[0015] A second object of the present utility model is to provide a range hood which generates little noise when in operation and provides a high user experience.

[0016] To achieve this purpose, the utility model adopts the following technical solutions:

[0017] A range hood comprises a main box, a fume hood and the above-mentioned fan, wherein the fan is arranged in the main box, and the fume hood is connected to the outside of the main box.

[0018] Beneficial effects of the utility model:

[0019] The fan provided by the utility model includes a volute and a guide member, wherein the volute is provided with an air outlet at the top in the first direction, and the volute is provided with an air inlet at the side in the second direction, and the guide member is detachably installed at the bottom of the volute in the first direction, and an arc-shaped guide surface is formed at one end of the guide member away from the air outlet, and the guide member extends from one end of the volute to the other end in the third direction, and noise reduction holes are provided through the guide member; wherein the first direction, the second direction and the third direction are perpendicular to each other. The fan is provided with a guide member at the bottom of the volute away from the air outlet, and the arc-shaped guide surface of the guide member can be used to guide the wind to the air inlet located at the side of the volute in the second direction, and since the guide member extends from one end of the volute to the other end in the third direction, the guide effect is good, so the vortex and turbulence formed at the volute are greatly reduced, and the noise reduction holes are provided on the guide member, which has a good noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the fan provided by the embodiment of the utility model being installed in the mainframe box;

[0021] Figure 2 It is a schematic diagram of a fan provided by an embodiment of the utility model;

[0022] Figure 3 It is an exploded view of the fan provided by the embodiment of the utility model;

[0023] Figure 4 A schematic diagram of a volute provided in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of a flow guide provided by an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a fan provided by an embodiment of the utility model;

[0026] Figure 7 yes Figure 6 Front view of the structure shown.

[0027] In the figure:

[0028] 100, volute; 110, air outlet; 120, air inlet; 130, connecting frame; 131, third connecting hole;

[0029] 200, guide member; 210, arc guide plate; 220, supporting side plate; 201, noise reduction hole; 202, first connecting hole;

[0030] 300. Main chassis. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "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 present invention and simplifying the description, and do not indicate or imply 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 invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0033] 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 or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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.

[0034] The utility model provides a fan, which can be used in a range hood. Of course, in addition to the range hood, the fan can also be used in other equipment. Figures 1 to 7 As shown, the fan includes a volute 100 and a flow guide 200. The volute 100 is formed with an air outlet 110 at the top in the first direction, and the volute 100 is formed with an air inlet 120 on the side in the second direction. In one embodiment, the air outlet 110 is a rectangular hole; in one embodiment, the air inlet 120 is a circular hole; in one embodiment, two air inlets 120 are provided, and the two air inlets 120 are provided on both sides of the volute 100 in the second direction. A volute cavity is formed in the volute 100. The volute cavity is a cavity in the volute 100 in the shape of a rotating flow. The volute cavity is mainly used to volute the gas. The air inlet 120 is used to introduce the gas into the volute cavity, and the air outlet 110 is used to discharge the gas.

[0035] The guide member 200 is detachably mounted at the bottom of the volute 100 in the first direction. An arc-shaped guide surface is formed at one end of the guide member 200 away from the air outlet 110. The guide member 200 extends from one end of the volute 100 to the other end in the third direction. A noise reduction hole 201 is provided through the guide member 200. The first direction, the second direction and the third direction are perpendicular to each other. It should be noted that the first direction is the installation direction of the fan. In one embodiment, the first direction is the vertical direction, the second direction and the third direction are both horizontal directions, the second direction is the width direction of the fan, and the third direction is the length direction of the fan.

[0036] The fan sets a guide member 200 at the bottom of the volute 100 away from the air outlet 110, and uses the arc-shaped guide surface of the guide member 200 to guide the wind to the air inlet 120 located on the side of the volute 100 in the second direction. Since the guide member 200 extends from one end of the volute 100 to the other end in the third direction, the guide member 200 has a good guiding effect, thereby greatly reducing the vortex and turbulence formed at the volute 100, thereby improving the air intake efficiency. In addition, the fan sets a noise reduction hole 201 on the guide member 200, so that the fan has a good noise reduction effect.

[0037] In some embodiments, the guide member 200 includes an arc-shaped guide plate 210 and two supporting side plates 220, the two ends of the arc-shaped guide plate 210 are respectively connected to the two supporting side plates 220, the outer wall surface of the arc-shaped guide plate 210 is an arc-shaped guide surface, and the noise reduction hole 201 is set through the arc-shaped guide plate 210. Such a configuration makes the guide member 200 compact and easy to manufacture.

[0038] In one embodiment, the supporting side plate 220 is an arc-shaped plate, and the side of the arc-shaped plate is formed by splicing a plane and an arc-shaped surface. In one embodiment, the arc-shaped guide plate 210 includes an arc-shaped main body and two arc-shaped side edges, the two arc-shaped side edges are respectively connected to the two sides of the arc-shaped main body in the second direction, and the two arc-shaped side edges are respectively coplanar with the two side wall plates of the volute 100 in the second direction, and the extension length of the arc-shaped main body in the third direction is equal to the extension length of the volute 100 in the third direction. Such an arrangement makes the guide member 200 have a better guide effect.

[0039] In order to ensure the noise reduction effect, in some embodiments, a plurality of noise reduction holes 201 are provided, and the plurality of noise reduction holes 201 are evenly distributed on the arc guide plate 210. In one embodiment, the noise reduction hole 201 is a circular hole; in another embodiment, the noise reduction hole 201 is a waist-shaped hole; in another embodiment, the noise reduction hole 201 is an elliptical hole. In one embodiment, the plurality of noise reduction holes 201 are arranged in rows and columns on the arc guide plate 210; in another embodiment, the plurality of noise reduction holes 201 are arranged radially on the arc guide plate 210; in another embodiment, the plurality of noise reduction holes 201 are arranged concentrically on the arc guide plate 210.

[0040] Since the guide member 200 is located exactly on the flow path of the smoke and the arc-shaped guide surface of the guide member 200 is arranged facing the smoke, in order to prevent tiny oil droplets in the smoke from gathering on the guide member 200, making the guide member 200 difficult to clean, in some embodiments, the guide member 200 is made of an easy-to-clean material, for example, the guide member 200 can be made of stainless steel or acrylic material; in other embodiments, the guide member 200 is coated with an anti-fouling layer, for example, the anti-fouling layer can be a polyurethane coating or a tempered layer.

[0041] In order to achieve a detachable connection between the guide member 200 and the volute 100, in some embodiments, a first connection hole 202 is provided on the supporting side plate 220, a second connection hole is provided on the volute 100, and the first connection member passes through the first connection hole 202 and the second connection hole to connect the volute 100 and the guide member 200. In one embodiment, the first connection hole 202 and the second connection hole can both be threaded holes, or one can be a threaded hole and the other can be a plain hole, and the first connection member can be a screw, or a combination of a bolt and a nut, so that the guide member 200 and the volute 100 can be screwed.

[0042] In order to improve the connection strength between the guide member 200 and the volute 100, in some embodiments, the first connection holes 202 and the second connection holes are provided in multiple and one-to-one correspondence, multiple first connection holes 202 are arranged at intervals on the supporting side plate 220, and multiple second connection holes are arranged at intervals on the volute 100, and each group of first connection holes 202 and second connection holes is penetrated with a first connection member. In one embodiment, there are six first connection holes 202, and in the third direction, the six first connection holes 202 are divided into two groups and are respectively arranged on the two supporting side plates 220, each group of first connection holes 202 includes three first connection holes 202, and the three first connection holes 202 are arranged at intervals in the second direction; there are six second connection holes, and the six second connection holes are divided into two groups, and the two groups of second connection holes are respectively arranged on both sides of the two volutes 100 in the third direction, and each group of second connection holes includes three second connection holes, and the three second connection holes are arranged at intervals in the second direction. Of course, in other embodiments, the number of first connection holes 202 and second connection holes can also be increased according to demand.

[0043] In some parallel embodiments, a first connection hole 202 is provided on the supporting side plate 220, and the fan further comprises a connection frame 130 with an adjustable connection angle, one end of the connection frame 130 is mounted on the outer wall surface of the volute 100, and the other end of the connection frame 130 is provided with a third connection hole 131, and the second connection member passes through the first connection hole 202 and the third connection hole 131 to assemble the connection frame 130 and the guide member 200. By connecting the guide member 200 and the volute 100 using the connection frame 130 with an adjustable connection angle, the installation of the guide member 200 is more flexible, and the difficulty of assembling the guide member 200 and the volute 100 is reduced.

[0044] In some embodiments, the first connection holes 202 and the third connection holes 131 are both provided in multiple and one-to-one correspondence, and each group of the first connection holes 202 and the third connection holes 131 is provided with a second connection member. In one embodiment, there are six first connection holes 202, and in the third direction, the six first connection holes 202 are divided into two groups and are respectively provided on two supporting side plates 220, and each group of the first connection holes 202 includes three first connection holes 202, and the three first connection holes 202 are arranged at intervals in the third direction; there are six third connection holes 131, and the six third connection holes 131 can be provided on one connection frame 130, or can be divided into two groups and respectively provided on two connection frames 130. Of course, six connection frames 130 can also be provided, and each connection frame 130 is provided with a third connection hole 131. Of course, in other embodiments, the number of the first connection holes 202 and the third connection holes 131 can also be increased according to demand, and the number of the connection frames 130 can also be increased or decreased according to demand.

[0045] In some embodiments, the connecting frame 130 includes a first plate, a second plate, and a third plate connected at an angle and having an adjustable angle, the first plate is connected to the volute 100, and the third connecting hole 131 is provided on the third plate. It should be noted that the connecting frame 130 can be made by bending a plate that can be deformed under a large external force, such as a stainless steel plate, in which case the first plate, the second plate, and the third plate are integrally formed plates; or, the connecting frame 130 can also be a splicing structure, in which two adjacent plates among the first plate, the second plate, and the third plate are rotatably connected. In one embodiment, the connecting frame 130 is Z-shaped; in another embodiment, the connecting frame 130 is U-shaped; in yet another embodiment, the connecting frame 130 is "I"-shaped.

[0046] In some embodiments, the fan further comprises a sound absorbing member, which is disposed on the inner side of the guide member 200 facing the volute 100. In one embodiment, the sound absorbing member is sound absorbing cotton; in another embodiment, the sound absorbing member is a polyester fiber sound absorbing board; in yet another embodiment, the sound absorbing member is linen.

[0047] The utility model also provides a range hood, which includes a main box 300, a smoke hood and the above-mentioned fan, wherein the fan is arranged in the main box 300, and the smoke hood is connected to the outside of the main box 300. By using the above-mentioned fan, the range hood not only generates less noise during operation, but also improves the air intake efficiency of the range hood, thereby improving the user experience. After experimental verification, by using the above-mentioned fan, the range hood can effectively reduce the noise level of the range hood when the range hood is operated, and the range hood can effectively reduce the noise level of the range hood when the range hood is operated. 3 / min-27m 3 / min and small flow rate 12m 3 / min, it has a good noise reduction effect.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A fan, characterized in that: include: A volute (100), wherein the volute (100) is provided with an air outlet (110) at the top in a first direction, and the volute (100) is provided with an air inlet (120) at the side in a second direction; A flow guide (200), wherein the flow guide (200) is detachably mounted on the bottom of the volute (100) in the first direction, an arc-shaped flow guide surface is formed at one end of the flow guide (200) away from the air outlet (110), and the flow guide (200) extends from one end of the volute (100) to the other end in the third direction, and a noise reduction hole (201) is provided through the flow guide (200); wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The fan according to claim 1, characterized in that: The flow guide (200) comprises an arc-shaped flow guide plate (210) and two supporting side plates (220), the two ends of the arc-shaped flow guide plate (210) are respectively connected to the two supporting side plates (220), the outer wall surface of the arc-shaped flow guide plate (210) is the arc-shaped flow guide surface, and the noise reduction hole (201) is arranged through the arc-shaped flow guide plate (210).

3. The fan according to claim 2, characterized in that: A plurality of the noise reduction holes (201) are provided, and the plurality of the noise reduction holes (201) are evenly distributed on the arc-shaped guide plate (210).

4. The fan according to claim 2, characterized in that: The supporting side plate (220) is provided with a first connecting hole (202), the volute (100) is provided with a second connecting hole, and a first connecting member passes through the first connecting hole (202) and the second connecting hole to connect the volute (100) and the flow guide member (200).

5. The fan according to claim 4, characterized in that: The first connection holes (202) and the second connection holes are both provided in plurality and are arranged in one-to-one correspondence. The plurality of first connection holes (202) are arranged at intervals on the supporting side plate (220), and the plurality of second connection holes are arranged at intervals on the volute (100). Each group of the first connection holes (202) and the second connection holes is provided with one of the first connection members.

6. The fan according to claim 2, characterized in that: The supporting side plate (220) is provided with a first connecting hole (202), and the fan further comprises a connecting frame (130) with an adjustable connection angle, one end of the connecting frame (130) is mounted on the outer wall surface of the volute (100), and the other end of the connecting frame (130) is provided with a third connecting hole (131), and a second connecting member passes through the first connecting hole (202) and the third connecting hole (131) to connect the connecting frame (130) and the guide member (200).

7. The fan according to claim 6, characterized in that: The first connection holes (202) and the third connection holes (131) are both provided in plurality and are arranged in one-to-one correspondence, and each group of the first connection holes (202) and the third connection holes (131) is penetrated by one of the second connection members.

8. The fan according to claim 6, characterized in that: The connecting frame (130) comprises a first plate, a second plate and a third plate which are connected at an angle and the angle is adjustable, the first plate is connected to the volute (100), and the third connecting hole (131) is arranged on the third plate.

9. The fan according to claim 1, characterized in that: The fan further comprises a sound absorbing member, which is arranged on the inner side of the flow guide member (200) facing the volute (100).

10. A range hood, characterized in that: It comprises a main box (300), a smoke collecting hood and a fan according to any one of claims 1 to 9, wherein the fan is arranged in the main box (300) and the smoke collecting hood is connected to the outside of the main box (300).

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