Air duct assembly and range hood

Abstract

The utility model relates to the technical field of range hoods, in particular to an air duct assembly and a range hood. The air duct assembly comprises a case, a volute fan assembly and a V-shaped flow guide plate, the volute fan assembly and the V-shaped flow guide plate are arranged in the case, the case is provided with a first side wall and a second side wall which are opposite, the volute fan assembly is connected with the first side wall in a fastened mode through a support, one side of the flow guide plate is connected with the second side wall in a fastened mode, and the side, facing the first side wall, of the flow guide plate is provided with a first clamping part and a first fixing part. The support is provided with a second clamping part which is clamped with the first clamping part in a matched mode and a second fixing part which is matched with the second fixing part in a fastened mode. Therefore, the installation stability of the volute fan assembly in the case is enhanced, and vibration generated when the volute fan assembly works is avoided. Meanwhile, the installation stability and the installation levelness of the flow guide plate are guaranteed, and the flow guide plate is prevented from vibrating due to airflow impact during airflow distribution; meanwhile, due to the fact that the first clamping part and the second clamping part are matched in a clamping mode, the flow guide plate is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to an air duct assembly and a range hood. Background Art

[0002] The range hood is the most commonly used kitchen appliance. The air duct assembly of the range hood generally includes a chassis and a volute fan assembly arranged in the chassis. The volute fan assembly is used to suck the oil smoke below the range hood into the chassis, and then discharge it to the outside through the volute fan assembly. Since air inlets are formed on opposite sides of the volute of the volute fan assembly, a V-shaped guide plate is generally provided under the volute fan assembly, so that the airflow can be diverted to the two sides of the volute fan assembly by the V-shaped guide plate after entering the chassis, so as to enter the air duct from the air inlets on both sides of the volute.

[0003] However, in current range hoods, the volute fan assembly is mainly hung on the chassis by the exhaust pipe above the volute, and the installation is unstable, causing the volute fan assembly to vibrate during operation; the installation of the guide plate is also unstable, making the guide plate prone to vibrate due to the impact of the airflow when diverting the airflow, and the existing guide plate installation method is not convenient for disassembly, assembly and maintenance of the guide plate. Utility Model Content

[0004] The utility model aims to provide an air duct assembly and a range hood, so as to improve the installation stability of the volute fan assembly and the guide plate to a certain extent, avoid the occurrence of vibration, and make the guide plate easy to disassemble and assemble.

[0005] The utility model provides an air duct assembly, comprising a chassis, a volute fan assembly and a V-shaped guide plate arranged below the volute fan assembly are arranged in the chassis;

[0006] The case has a first direction perpendicular to the impeller axis of the volute fan assembly, the case includes a first side wall and a second side wall arranged opposite to each other along the first direction, and a side of the volute of the volute fan assembly facing the first side wall is fastened to the first side wall through a bracket;

[0007] The side of the guide plate facing the second side wall is fastened to the second side wall, and the side of the guide plate facing the first side wall is provided with a first clamping portion and a first fixing portion axially spaced apart from each other along the impeller, and the bracket is provided with a second clamping portion and a second fixing portion, the first clamping portion is clamped on the second clamping portion, and the guide plate is fastened to the second fixing portion through the first fixing portion.

[0008] Furthermore, the guide plate includes a first plate body and a second plate body connected in a V-shape, and the first plate body and the second plate body are connected at one side facing the first side wall through a first side plate;

[0009] A hook is provided on one side of the first side plate close to the first plate body, the hook is the first holding portion, and the second holding portion is a flange portion formed on the bracket, and a slot is provided on the flange portion for engaging with the hook.

[0010] Further, the first fixing portion is a first connecting hole formed on the second plate body, and the second fixing portion is a connecting piece formed on the bracket;

[0011] The connecting piece is parallel to and abuts against a side surface of the second plate body facing the first plate body. A second connecting hole is provided on the connecting piece. The second connecting hole is coaxially opposite to the first connecting hole and is used for passing the first fastener.

[0012] Furthermore, the first plate body and the second plate body are connected through a second side plate on one side facing the second side wall. A countersunk hole is provided on the second side plate, and a fixing hole is provided on the second side wall. The fixing hole is coaxially opposite to the countersunk hole for passing a second fastener.

[0013] Furthermore, a plurality of countersunk holes are provided on the second side plate at intervals along the axial direction of the impeller, the number of the fixing holes is also multiple, and the plurality of countersunk holes and the plurality of fixing holes are relatively arranged in a one-to-one correspondence.

[0014] Furthermore, a mounting plate is provided on the first side wall, and a first boss and a second boss are provided on the mounting plate at intervals along the axial direction of the impeller, and threaded connection holes are provided on the first boss and the second boss;

[0015] The bracket is arranged opposite to the mounting plate, and the bracket is provided with two third connecting holes spaced apart along the axial direction of the impeller, and the two third connecting holes are arranged opposite to the two threaded connecting holes in a one-to-one correspondence.

[0016] Furthermore, the bracket is provided with a first arm and a second arm, the first arm is firmly connected to one side of the volute along the axial direction of the impeller, and the second arm is firmly connected to the other side of the volute along the axial direction of the impeller.

[0017] Furthermore, a surface of the first plate body facing away from the second plate body is an outer surface of the first plate body, and a first protrusion is formed on the outer surface of the first plate body facing the volute fan assembly;

[0018] A surface of the second plate body on one side facing away from the first plate body is an outer surface of the second plate body, and a second protrusion is formed on an outer surface of the second plate body on a side facing the volute fan assembly.

[0019] Furthermore, the first protrusion and the second protrusion are both semicircular.

[0020] The utility model also provides a range hood, comprising any one of the above-mentioned air duct components.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The air duct assembly provided by the utility model comprises a chassis, and a volute fan assembly and a V-shaped guide plate which are arranged up and down in the chassis, and the chassis is relatively provided with a first side wall and a second side wall in a first direction perpendicular to the axial direction of the impeller of the volute fan assembly; in the chassis, the exhaust pipe above the volute fan assembly is fastened to the top of the chassis, and at the same time, the volute of the volute fan assembly is fastened to the first side wall through a bracket at a position toward one side of the first side wall and lower, thereby enhancing the stability of the installation of the volute fan assembly through the bracket to avoid vibration of the volute fan assembly when it is working.

[0023] The side of the guide plate facing the second side wall is fastened to the second side wall, and the side of the guide plate facing the first side wall is provided with a first clamping portion and a first fixing portion, the first clamping portion and the first fixing portion are spaced apart along the axial direction of the impeller, and the second clamping portion and the second fixing portion are spaced apart on the bracket, the guide plate is engaged with the second clamping portion on the bracket through the first clamping portion, and the guide plate is fastened to the second fixing portion on the bracket through the first fixing portion; thereby, the installation of the guide plate can be completed conveniently and quickly, and the stability and horizontality of the installation of the guide plate can be ensured, so as to avoid the guide plate from vibrating due to the impact of the airflow when diverting the airflow; at the same time, due to the clamping cooperation between the first clamping portion and the second clamping portion, the disassembly and assembly of the guide plate is more convenient.

[0024] The utility model also provides a range hood, comprising the above-mentioned air duct assembly, so the range hood also has the beneficial effects of the air duct assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of the air duct assembly provided in an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the structure of a chassis of an air duct assembly provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a bracket of an air duct assembly provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of a guide plate of an air duct assembly provided in an embodiment of the utility model;

[0030] Figure 5 A schematic diagram of the assembly of the guide plate and the bracket of the air duct assembly provided in the embodiment of the utility model;

[0031] Figure 6 A schematic structural diagram of a mounting plate of an air duct assembly provided in an embodiment of the utility model.

[0032] Reference numerals:

[0033] 1-chassis, 11-first side wall, 12-second side wall, 13-fixing hole;

[0034] 2-volute fan assembly;

[0035] 3-guide plate, 31-first plate body, 32-second plate body, 33-hook, 34-first connecting hole, 35-second side plate, 36-counter hole, 37-first side plate, 38-first protrusion, 39-second protrusion;

[0036] 4- bracket, 41- first arm, 42- second arm, 43- flange part, 44- slot, 45- connecting piece;

[0037] 5-mounting plate, 51-first boss, 52-second boss;

[0038] a-First direction. DETAILED DESCRIPTION

[0039] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0040] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0041] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] 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.

[0044] Refer to the following Figures 1 to 6 An air duct assembly and a range hood according to some embodiments of the present application are described.

[0045] The present application provides an air duct assembly, such as Figure 1 As shown, the air duct assembly includes a chassis 1, a volute fan assembly 2 and a guide plate 3. The volute fan assembly 2 and the guide plate 3 are arranged in the chassis 1. The volute fan assembly 2 includes a volute and a fan and an impeller arranged in the volute. Air inlets are formed on opposite sides of the volute, and the air inlets on both sides are coaxially arranged with the impeller; the guide plate 3 is arranged below the volute, and the guide plate 3 is V-shaped, including a first plate body 31 and a second plate body 32 connected in a V shape, the tip of the guide plate 3 faces downward, and the first plate body 31 and the second plate body 32 extend toward the air inlets on both sides of the volute respectively; when the fan is working, the airflow below the range hood can be sucked into the chassis 1, the airflow enters from the bottom of the chassis 1, and then is diverted toward the air inlets on both sides of the volute through the guide plate 3.

[0046] The chassis 1 has a first direction a perpendicular to the impeller axis of the volute fan assembly 2, and the chassis 1 is provided with a first side wall 11 and a second side wall 12 opposite to each other on both sides of the first direction a; for example, when the chassis 1 is installed vertically, the first direction a is a horizontal front-to-back direction, and the impeller axis is along a horizontal left-to-right direction, the first side wall 11 faces forward to face the user, and the second side wall 12 faces backward. In the chassis 1, the exhaust pipe above the volute is fastened to the top of the chassis 1, and at the same time, the volute is fastened to the first side wall 11 by a bracket 4 at a side and lower position facing the first side wall 11, thereby strengthening the stability of the installation of the volute fan assembly 2 through the bracket 4 to avoid vibration of the volute fan assembly 2 when it is working.

[0047] The bracket 4 is also used for installation with the guide plate 3, so that the side of the guide plate 3 facing the first side wall 11 is fastened to the first side wall 11 through the bracket 4. Specifically, the side of the guide plate 3 facing the second side wall 12 is fastened to the second side wall 12, the side of the guide plate 3 facing the first side wall 11 is provided with a first clamping portion and a first fixing portion, the first clamping portion and the first fixing portion are arranged at intervals along the axial direction of the impeller, the bracket 4 is provided with a second clamping portion and a second fixing portion at intervals on the left and right, the guide plate 3 is clamped with the second clamping portion on the bracket 4 through the first clamping portion, and the guide plate 3 is fastened to the second fixing portion on the bracket 4 through the first fixing portion; thereby completing the installation of the guide plate 3 conveniently and quickly, and ensuring the stability and horizontality of the installation of the guide plate 3, and avoiding the guide plate 3 from vibrating due to the impact of the airflow when diverting the airflow; at the same time, due to the clamping cooperation between the first clamping portion and the second clamping portion, the disassembly and assembly of the guide plate 3 is more convenient.

[0048] In one embodiment of the present application, preferably, Figure 3 and Figure 4 As shown, a first side plate 37 is provided between the first plate body 31 and the second plate body 32 of the guide plate 3, and the first side plate 37 is located on the side of the guide plate 3 facing the first side wall 11, and the first side plate 37 is provided with a hook 33 on the side close to the first plate body 31, and the hook 33 is the above-mentioned first holding portion; the bracket 4 is provided with a flange portion 43 extending in the horizontal direction, and the flange portion 43 is the above-mentioned second holding portion, and a groove 44 is provided on the flange portion 43, and the flange portion 43 is engaged with the hook 33 through the groove 44.

[0049] The second plate body 32 is provided with a first connecting hole 34 on a side close to the first side wall 11, and the first connecting hole 34 is the above-mentioned first fixing portion. The bracket 4 is provided with a connecting piece 45, and the connecting piece 45 is the above-mentioned second fixing portion; the connecting piece 45 is arranged at an angle, and when the hook 33 and the slot 44 on the flange portion 43 are completely clamped, the connecting piece 45 can be parallel to the side plate surface of the second plate body 32 facing the first plate body 31, and a second connecting hole is provided on the connecting piece 45, and the second connecting hole is coaxially opposite to the first connecting hole 34, so that a first fastener can be passed between the connecting piece 45 and the second plate body 32 to fasten the second plate body 32 and the connecting piece 45, thereby completing the connection between the guide plate 3 and the first side wall 11.

[0050] In one embodiment of the present application, preferably, Figure 1 and Figure 4 As shown, a second side plate 35 is further provided between the first plate body 31 and the second plate body 32 of the guide plate 3. The second side plate 35 is located on the side of the guide plate 3 facing the second side wall 12. A countersunk hole 36 is provided on the second side plate 35. A fixing hole 13 is provided on the second side wall 12 of the chassis 1. The countersunk hole 36 is coaxially opposite to the fixing hole 13 so that a second fastener can be passed between the second side wall 12 and the second side plate 35 to fasten the side of the guide plate 3 facing the second side wall 12 to the second side wall 12.

[0051] Preferably, the chassis 1 is provided with a plurality of fixing holes 13, and the plurality of fixing holes 13 are spaced apart along the axial direction of the impeller, and the second side plate 35 is provided with a plurality of countersunk holes 36, and the plurality of countersunk holes 36 are relatively arranged in a one-to-one correspondence with the plurality of fixing holes 13, so that a plurality of second fasteners can be passed between the second side plate 35 and the second side wall 12 to enhance the stability of the connection between the guide plate 3 and the second side wall 12 of the chassis 1.

[0052] In one embodiment of the present application, preferably, Figure 2 , Figure 5 and Figure 6 As shown, regarding the connection between the bracket 4 and the first side wall 11, a mounting plate 5 is provided on the inner side of the first side wall 11, and a first boss 51 and a second boss 52 are provided on the mounting plate 5 at intervals along the axial direction of the impeller, and threaded connection holes are provided on the first boss 51 and the second boss 52, respectively. Two third connection holes are provided on the bracket 4 at intervals along the axial direction of the impeller, and the two third connection holes are coaxially arranged opposite to the two threaded connection holes in a one-to-one correspondence, so that fastening screws can be respectively inserted between the bracket 4 and the first boss 51 and the second boss 52, so as to fasten the bracket 4 and the mounting plate 5 together, thereby fixing the bracket 4 on the first side wall 11.

[0053] The first side wall 11 of the chassis 1 is used to face the user in the front. By arranging a mounting plate 5 on the inner side of the first side wall 11 and arranging threaded connection holes on two bosses on the mounting plate 5, the bracket 4 is connected by fastening screws, so that the fastening screws are not used to pass through the first side wall 11 and affect the aesthetics of the first side wall 11 facing the user.

[0054] In one embodiment of the present application, preferably, Figure 1 and Figure 3 As shown, regarding the connection between the bracket 4 and the volute, the bracket 4 is provided with a first arm 41 and a second arm 42 at intervals, and the first arm 41 is fastened to one side of the volute along the axial direction of the impeller, and the second arm 42 is fastened to the other side of the volute along the axial direction of the impeller, thereby enhancing the stability of the installation of the volute fan assembly 2 through the bracket 4 to avoid vibration of the volute fan assembly 2 during operation.

[0055] Preferably, if Figure 3 As shown, the second arm 42 is located at a side of the second plate body 32 close to the guide plate 3 , and a connecting piece 45 used as a second fixing portion is integrally formed on the second arm 42 .

[0056] In one embodiment of the present application, preferably, Figure 4 As shown, the side surface of the first plate body 31 facing away from the second plate body 32 is the outer surface of the first plate body 31, and the first plate body 31 is formed with a first protrusion 38 on the outer surface facing the volute fan assembly 2; the side surface of the second plate body 32 facing away from the first plate body 31 is the outer surface of the second plate body 32, and the second protrusion 39 is formed on the outer surface facing the volute fan assembly 2; preferably, the first protrusion 38 and the second protrusion 39 are both semicircular. Through the first protrusion 38 on the first plate body 31 and the second protrusion 39 on the second plate body 32, some deflection force can be given to the rising airflow, so that the airflow forms a pre-swirl flow to a certain extent, reducing the resistance of the airflow at the air inlets on both sides of the volute fan assembly 2, thereby reducing the vibration of the guide plate 3 and the volute fan assembly 2, and reducing the noise of the range hood.

[0057] In this embodiment, the first protrusion 38 is formed by pressing the first plate 31 from the inside to the outside, so that the inner surface of the first plate 31 (i.e., the surface of the first plate 31 facing the second plate 32) is formed with a depression, such as Figure 4 The second protrusion 39 is formed in the same manner as the first protrusion 38 .

[0058] The present application also provides a range hood, comprising an air duct assembly according to any of the above embodiments.

[0059] In this embodiment, the range hood includes an air duct assembly, so the range hood has all the beneficial effects of the air duct assembly, which will not be described in detail here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An air duct assembly, characterized in that: It comprises a case (1), wherein a volute fan assembly (2) and a V-shaped guide plate (3) arranged below the volute fan assembly (2) are arranged in the case (1); The case (1) has a first direction (a) perpendicular to the impeller axis of the volute fan assembly (2), the case (1) comprises a first side wall (11) and a second side wall (12) arranged opposite to each other along the first direction (a), and a side of the volute of the volute fan assembly (2) facing the first side wall (11) is fastened to the first side wall (11) via a bracket (4); The side of the guide plate (3) facing the second side wall (12) is fastened to the second side wall (12); the side of the guide plate (3) facing the first side wall (11) is provided with a first clamping portion and a first fixing portion spaced apart along the axial direction of the impeller; the bracket (4) is provided with a second clamping portion and a second fixing portion; the first clamping portion is clamped on the second clamping portion, and the guide plate (3) is fastened to the second fixing portion via the first fixing portion.

2. The air duct assembly according to claim 1, characterized in that: The guide plate (3) comprises a first plate body (31) and a second plate body (32) connected in a V-shape, wherein the first plate body (31) and the second plate body (32) are connected at a side facing the first side wall (11) via a first side plate (37); A hook (33) is provided on one side of the first side plate (37) close to the first plate body (31); the hook (33) is the first holding portion; the second holding portion is a flange portion (43) formed on the bracket (4); a slot (44) is provided on the flange portion (43) for engaging with the hook (33).

3. The air duct assembly according to claim 2, characterized in that: The first fixing portion is a first connecting hole (34) formed on the second plate (32), and the second fixing portion is a connecting piece (45) formed on the bracket (4); The connecting piece (45) is parallel to and abuts against a side surface of the second plate body (32) facing the first plate body (31), and a second connecting hole is formed on the connecting piece (45). The second connecting hole is coaxially opposite to the first connecting hole (34) for passing a first fastener.

4. The air duct assembly according to claim 2, characterized in that: The first plate body (31) and the second plate body (32) are connected to each other via a second side plate (35) on one side facing the second side wall (12); a countersunk hole (36) is provided on the second side plate (35); a fixing hole (13) is provided on the second side wall (12); the fixing hole (13) is coaxially opposed to the countersunk hole (36) for passing a second fastener.

5. The air duct assembly according to claim 4, characterized in that: The second side plate (35) is provided with a plurality of countersunk holes (36) spaced apart along the axial direction of the impeller, the number of the fixing holes (13) is also a plurality, and the plurality of countersunk holes (36) and the plurality of fixing holes (13) are arranged in a one-to-one correspondence with each other.

6. The air duct assembly according to claim 1, characterized in that: A mounting plate (5) is provided on the first side wall (11), and a first boss (51) and a second boss (52) are provided on the mounting plate (5) at intervals along the axial direction of the impeller, and threaded connection holes are provided on the first boss (51) and the second boss (52); The bracket (4) is arranged opposite to the mounting plate (5), and the bracket (4) is provided with two third connection holes spaced apart along the axial direction of the impeller, and the two third connection holes are arranged opposite to the two threaded connection holes in a one-to-one correspondence.

7. The air duct assembly according to claim 1, characterized in that: The bracket (4) is provided with a first support arm (41) and a second support arm (42); the first support arm (41) is firmly connected to the volute on one side along the axial direction of the impeller, and the second support arm (42) is firmly connected to the volute on the other side along the axial direction of the impeller.

8. The air duct assembly according to claim 2, characterized in that: A surface of the first plate body (31) facing away from the second plate body (32) is an outer surface of the first plate body (31), and a first protrusion (38) is formed on the outer surface of the first plate body (31) facing the volute fan assembly (2); A side surface of the second plate body (32) facing away from the first plate body (31) is an outer surface of the second plate body (32), and a second protrusion (39) is formed on the outer surface of the second plate body (32) facing the volute fan assembly (2).

9. The air duct assembly according to claim 8, characterized in that: The first protrusion (38) and the second protrusion (39) are both semicircular.

10. A range hood, characterized in that: The invention comprises the air duct assembly according to any one of claims 1 to 9.

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