Flow guide ring of range hood fan set

Abstract

The utility model relates to the technical field of range hoods, in particular to a range hood fan set flow guide ring which comprises a ring body, and the ring body comprises a middle embedded face, an outer ring and a transition face formed between the embedded face and the outer ring. The ring body is provided with an embedded surface, at least two fixing seats are symmetrically installed on the embedded surface, the end face of each fixing seat is rotationally connected with a locking piece, and the locking pieces are used for being clamped on the inner side face of a machine shell so as to be matched with the outer ring to fix the ring body. Due to the fact that the locking piece is rotationally connected to the fixing base, when the ring body is installed, the inner wall of the hole position of the machine shell is locked through the locking piece, meanwhile, the whole ring body is firmly installed on the outer side of the machine shell in cooperation with the stopping effect of the outer ring, only the locking piece needs to be rotated when the ring body is disassembled, operation is easy and convenient, and practicability is high. And the ring body is effectively and conveniently disassembled in the whole maintenance and cleaning process of the centrifugal motor of the range hood.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a guide ring for a range hood fan unit. Background Technology

[0002] Range hoods are indispensable equipment in modern kitchens, their main function being to effectively absorb and remove cooking fumes. In existing range hood designs, the centrifugal fan is the core component. Its working principle involves generating airflow through the high-speed rotation of an impeller, thereby drawing in and expelling the cooking fumes. A centrifugal fan typically includes a fan housing, an internal impeller, and a front guide ring. The guide ring is designed to optimize airflow and improve fume extraction efficiency.

[0003] For example, Chinese Patent Publication No. CN108916963B discloses a range hood guide ring and range hood. In existing range hood structures, the guide ring is generally fixed to the fan housing using fasteners such as bolts. While this method ensures the stability of the guide ring, it presents several problems in practical applications. First, using bolts and other fasteners makes the installation and disassembly of the guide ring cumbersome and inefficient. Especially when regular maintenance or replacement of internal components such as the impeller is required, this fixing method significantly reduces the convenience of maintenance.

[0004] Based on this, in order to optimize the ease of disassembly and assembly of existing air guide rings, we propose an air guide ring for range hood fan units. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, such as the fact that the guide ring is generally fixed to the fan housing by bolts and other fasteners, and the installation and disassembly process is relatively cumbersome. Therefore, a guide ring for a range hood fan unit is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a guide ring for a range hood fan unit, including a ring body, the ring body including a central embedded surface, an outer ring, and a transition surface formed between the embedded surface and the outer ring;

[0008] Several flow ports are formed on the end face of the embedded surface;

[0009] At least two fixing seats are symmetrically installed on the embedded surface. A locking member is rotatably connected to the end face of the fixing seat. The locking member is used to lock onto the inner side of the housing to cooperate with the outer ring to fix the ring body.

[0010] Furthermore, the locking member includes a rotating part and an arm fixed to the rotating part. An arc-shaped stop bar is fixed to one side of the rotating part, and a rotating shaft is fixedly connected to the end face of the fixed base. The rotating part is rotatably connected to the rotating shaft.

[0011] Furthermore, a clearance opening is provided on the end face of the transition surface, and the arc-shaped stop bar rotates along the clearance opening to the inner side of the housing.

[0012] Furthermore, the center of the arc-shaped stop bar does not coincide with the center of the rotating shaft;

[0013] The thickness of the arc-shaped stop bar gradually decreases from the near end to the far end of the rotating part.

[0014] Furthermore, it also includes a positioning structure, which is used to lock and fix the rotation angle of the locking member.

[0015] Furthermore, the positioning structure includes positioning beads embedded in the end face of the fixed seat, and two positioning holes are opened at intervals on the side of the rotating part, with the telescopic end of the positioning beads engaging in the positioning holes.

[0016] Furthermore, the positioning port is an arc-shaped port, and the two positioning ports are 90 degrees apart along the circumference of the rotating part.

[0017] The beneficial effects of the guide ring for a range hood fan unit proposed in this utility model are as follows: By fixing two fixed seats on the end face of the embedded surface, and because the fixed seats are rotatably connected with locking parts, when installing the ring, the locking parts lock the inner wall of the housing hole, and at the same time, with the stop action of the outer ring, the entire ring is firmly installed on the outside of the housing. Disassembly only requires rotating the locking parts, which is simple and convenient to operate and effectively improves the ease of disassembly of the ring during the maintenance and cleaning of the centrifugal motor of the range hood, thereby optimizing the overall applicability. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the locking component structure of this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the locking component structure of this utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the structure of the ring body of this utility model mounted on the housing.

[0022] In the diagram: 1. Ring body; 11. Embedded surface; 12. Outer ring; 13. Transition surface; 14. Flow port; 15. Clearance port; 2. Fixed seat; 21. Rotating shaft; 3. Locking element; 31. Rotating part; 32. Arm; 33. Arc-shaped stop bar; 4. Positioning structure; 41. Positioning glass bead; 42. Positioning port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 As an embodiment of this utility model, a guide ring for a range hood fan unit is disclosed, including a ring body 1, wherein the ring body 1 includes an embedded surface 11 in the middle, an outer ring 12, and a transition surface 13 formed between the embedded surface 11 and the outer ring 12;

[0025] A plurality of flow ports 14 are formed on the end face of the embedded surface 11;

[0026] At least two fixing seats 2 are symmetrically installed on the embedded surface 11. A locking member 3 is rotatably connected to the end face of the fixing seat 2. The locking member 3 is used to lock onto the inner side of the housing to cooperate with the outer ring 12 to fix the ring body 1.

[0027] In this utility model, when the ring 1 is installed in the fan housing, the embedding surface 11 is first embedded in the hole of the housing until its outer ring 12 abuts against the front side of the housing. Then, by rotating the locking member 3, the locking member 3 is locked inside the hole of the housing, thus completing the installation and fixing of the entire ring 1.

[0028] Of course, in this embodiment, several positioning holes can also be opened on the end face of the outer ring 12, and positioning pins can be set on the end face of the housing to achieve installation positioning.

[0029] In some embodiments, the locking member 3 of the present invention includes a rotating part 31 and an arm 32 fixed to the rotating part 31. An arc-shaped stop bar 33 is fixed on one side of the rotating part 31, and a rotating shaft 21 is fixedly connected to the end face of the fixed base 2. The rotating part 31 is rotatably connected to the rotating shaft 21.

[0030] Of course, in order to ensure that the arc-shaped stop bar 33 can rotate to the inner side of the housing, an avoidance opening 15 is provided on the end face of the transition surface 13 in this utility model, and the arc-shaped stop bar 33 rotates to the inner side of the housing along the avoidance opening 15.

[0031] It should be noted that the arc-shaped stop bar 33 and the center of the rotating shaft 21 in this utility model do not coincide. By adopting an eccentric structure design, it can be ensured that the arc-shaped stop bar 33 can rotate within a small movement space, thus reducing the opening size of the entire clearance opening 15, so as not to affect the connection strength of the entire ring body 1.

[0032] Furthermore, the thickness of the arc-shaped stop bar 33 gradually decreases from the proximal end to the distal end along the rotating part 31. In this embodiment, the proximal end is the end close to the rotating part 31. By adopting this thin-film design, the arc-shaped stop bar 33 can be smoothly engaged with the inner side of the hole in the housing. When the arc-shaped stop bar 33 continues to rotate, its thickness increases, thus creating a contact effect with the inner side of the hole in the housing, thereby firmly clamping the entire ring 1 to both sides of the housing and ensuring the connection stability of the ring 1.

[0033] In some embodiments, in order to lock and fix the rotational position of the locking member 3 and ensure its stability in the locked position, the present invention further includes a positioning structure 4, which is used to lock and fix the rotation angle of the locking member 3.

[0034] Preferably, in this embodiment, the positioning structure 4 includes a positioning glass bead 41 embedded in the end face of the fixed base 2, and two positioning holes 42 are opened at intervals on the side of the rotating part 31, and the telescopic end of the positioning glass bead 41 is engaged in the positioning hole 42.

[0035] Specifically, the positioning port 42 is an arc-shaped port, and the two positioning ports 42 are 90 degrees apart along the circumference of the rotating part 31.

[0036] In this embodiment, the locking member 3 is fixed by using a positioning glass bead 41 to engage with two positioning ports 42. When it is necessary to rotate the entire locking member 3, first press the telescopic end of the positioning glass bead 41 to disengage from the positioning port 42. At this time, the locking member 3 can be rotated freely until the other positioning port 42 on the locking member 3 engages with the positioning glass bead 41, so as to complete the fixation of the locking member 3 in both the open and locked positions.

[0037] In summary, this utility model features a design that fixes two mounting bases 2 on the end face of the embedded surface 11. Since the mounting bases 2 are rotatably connected to locking parts 3, when installing the ring body 1, the locking parts 3 lock the inner wall of the housing hole. At the same time, in conjunction with the stop function of the outer ring 12, the entire ring body 1 is securely installed on the outside of the housing. Disassembly is simple and convenient, requiring only the rotation of the locking parts 3. This design effectively improves the ease of disassembly of the ring body 1 during the maintenance and cleaning of the centrifugal motor of the range hood, thereby optimizing the overall applicability.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A guide ring for a range hood fan unit, comprising a ring body (1), characterized in that: The ring body (1) includes a central insert surface (11), an outer ring (12), and a transition surface (13) formed between the insert surface (11) and the outer ring (12); A plurality of flow ports (14) are formed on the end face of the embedded surface (11); At least two fixing seats (2) are symmetrically installed on the embedded surface (11). A locking member (3) is rotatably connected to the end face of the fixing seat (2). The locking member (3) is used to lock onto the inner side of the housing to cooperate with the outer ring (12) to fix the ring body (1).

2. The guide ring for a range hood fan unit according to claim 1, characterized in that: The locking member (3) includes a rotating part (31) and an arm (32) fixed to the rotating part (31). An arc-shaped stop bar (33) is fixed on one side of the rotating part (31), and a rotating shaft (21) is fixedly connected to the end face of the fixed seat (2). The rotating part (31) is rotatably connected to the rotating shaft (21).

3. The guide ring for a range hood fan unit according to claim 2, characterized in that: An avoidance opening (15) is provided on the end face of the transition surface (13), and the arc-shaped stop bar (33) rotates along the avoidance opening (15) to the inner side of the housing.

4. The guide ring for a range hood fan unit according to claim 2, characterized in that: The center of the arc-shaped stop bar (33) does not coincide with the center of the rotating shaft (21); The thickness of the arc-shaped stop bar (33) gradually decreases from the proximal end to the distal end along the rotating part (31).

5. The guide ring for a range hood fan unit according to claim 2, characterized in that: It also includes a positioning structure (4), which is used to lock and fix the rotation angle of the locking member (3).

6. The guide ring for a range hood fan unit according to claim 5, characterized in that: The positioning structure (4) includes a positioning glass bead (41) embedded in the end face of the fixed base (2), and two positioning holes (42) are opened at intervals on the side of the rotating part (31), and the telescopic end of the positioning glass bead (41) is engaged in the positioning hole (42).

7. The guide ring for a range hood fan unit according to claim 6, characterized in that: The positioning port (42) is an arc-shaped port, and the two positioning ports (42) are 90 degrees apart along the circumference of the rotating part (31).

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