Fixed impeller assembly of fan and fan with fixed impeller assembly

Abstract

The fixed impeller assembly comprises a fixed impeller body installed between a movable impeller outer cover and a motor shell, and an auxiliary impeller is fixedly installed on one end face of the fixed impeller body. The auxiliary impeller is located between the fixed impeller body and the movable impeller and is in clearance fit with the movable impeller. According to the fan adopting the fixed impeller assembly, the working efficiency of the fan can be obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of fan structure, specifically relating to a stator impeller assembly for a fan and the fan thereof. Background Technology

[0002] The impeller (also known as the "wind guide ring") of existing fans (usually used in household appliances) is limited by structural design conditions. During the mold manufacturing process, the number of blades is mostly short and small, and the total number of blades is usually no more than 10. Although this is convenient for production and assembly, it largely sacrifices the overall performance of the fan.

[0003] Therefore, the applicant hopes to find a technical solution to address the above technical problems. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a fixed impeller assembly for a fan and the fan thereof, which can significantly improve the working efficiency of the fan.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A fan impeller assembly includes a fixed impeller body installed between a moving impeller casing and a motor housing, and an auxiliary impeller fixedly installed on one end face of the fixed impeller body; the auxiliary impeller is located between the fixed impeller body and the moving impeller, and is clearance-fitted with the moving impeller.

[0007] Preferably, the fixed impeller body and the auxiliary impeller are fixedly installed and fitted together using fasteners.

[0008] Preferably, the end face of the fixed impeller body is provided with a groove, and the auxiliary impeller is provided with a protrusion that is limited and matched with the groove; or the end face of the fixed impeller body is provided with a protrusion, and the auxiliary impeller is provided with a groove that is limited and matched with the protrusion.

[0009] Preferably, the impeller body includes an inner impeller ring and an outer impeller ring located on the outer periphery of the inner impeller ring; wherein, a plurality of impeller blades are provided between the inner impeller ring and the outer impeller ring in a circumferentially spaced manner.

[0010] Preferably, each of the fixed impeller blades is curved; and / or the number of fixed impeller blades is 6-10.

[0011] Preferably, the auxiliary impeller includes an inner ring, and the outer periphery of the inner ring is provided with a plurality of auxiliary impeller blades distributed at intervals; wherein, the inner ring of the auxiliary impeller is fixedly connected to the inner ring of the fixed impeller.

[0012] Preferably, the auxiliary impeller blades have a curved surface shape; and / or the number of auxiliary impeller blades is 6-10.

[0013] Preferably, the number of auxiliary impeller blades is equal to the number of fixed impeller blades.

[0014] Preferably, the diameter of the inner ring of the auxiliary impeller is not equal to the diameter of the inner ring of the fixed impeller.

[0015] Preferably, a fan includes a rotor and a moving impeller fixedly installed as one unit. A moving impeller cover is rotatably mounted on the outer periphery of the moving impeller. A stator is rotatably mounted on the outer periphery of the rotor. The stator is fixedly installed on the inner periphery of a motor housing. The motor housing is fixedly installed as one unit with the moving impeller cover via a stator-impeller assembly. The stator-impeller assembly is a stator-impeller assembly according to the above-described fan.

[0016] This application proposes to fix an auxiliary impeller structure on one end face of the fixed impeller body. The auxiliary impeller is located between the fixed impeller body and the moving impeller and is clearance-fitted with the moving impeller. This provides the fixed impeller assembly provided in this application. Fans using this fixed impeller assembly can significantly improve the working efficiency of the fan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fan structure according to a specific embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Sectional view;

[0019] Figure 3 This is an exploded structural diagram of the fan according to a specific embodiment of the present invention (the stator, rotor, and motor housing are hidden).

[0020] Figure 4 This is an exploded structural diagram of the fixed impeller body and the auxiliary impeller in a specific embodiment of this utility model. Detailed Implementation

[0021] This utility model discloses a fixed impeller assembly for a fan, including a fixed impeller body installed between the outer casing of the moving impeller and the motor housing, and an auxiliary impeller fixedly installed on one end face of the fixed impeller body; the auxiliary impeller is located between the fixed impeller body and the moving impeller, and is clearance-fitted with the moving impeller.

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] Please see Figure 1 , Figure 2 and combined Figure 3 As shown, a fan 1 includes a rotor 11 and a moving impeller 12 fixedly installed as one unit. A moving impeller cover 13 is rotatably mounted on the outer periphery of the moving impeller 12. A stator 14 is rotatably mounted on the outer periphery of the rotor 11. The stator 14 is fixedly installed on the inner periphery of a motor housing 15. The motor housing 15 is fixedly installed as one unit with the moving impeller cover 13 via a stator-impeller assembly 2. The stator-impeller assembly adopts the stator-impeller assembly described below according to this embodiment.

[0024] Please see further. Figure 4 As shown, a fan impeller assembly 2 includes a fixed impeller body 21 installed between a moving impeller cover 13 and a motor housing 15. An auxiliary impeller 22 is fixedly installed on one end face of the fixed impeller body 21. The auxiliary impeller 22 is located between the fixed impeller body 21 and the moving impeller 12, and is clearance-fitted with the moving impeller 12.

[0025] Preferably, in this embodiment, a fastener is used between the fixed impeller body 21 and the auxiliary impeller 22. Figure 3 The diagram shows the use of three screws (23) to achieve a fixed installation.

[0026] Preferably, in order to achieve rapid positioning of the fixed impeller body 21 and the auxiliary impeller 22 and facilitate efficient assembly, in this embodiment, the end face of the fixed impeller body 21 is provided with a groove 24, and the auxiliary impeller 22 is provided with a protrusion (not shown) that is limited and matched with the groove 24; in other embodiments, the end face of the fixed impeller body 21 may be provided with a protrusion, and the auxiliary impeller 22 may be provided with a groove that is limited and matched with the protrusion.

[0027] Preferably, in this embodiment, the impeller body 21 includes an inner impeller ring 21a and an outer impeller ring 21b located on the outer periphery of the inner impeller ring 21a; wherein, a plurality of impeller blades 21c are provided between the inner impeller ring 21a and the outer impeller ring 21b in a circumferentially spaced manner; more preferably, in this embodiment, each impeller blade 21c is curved; the number of impeller blades 21c is 6-10. Figure 4 (Eight fixed impeller blades are shown).

[0028] Preferably, in this embodiment, the auxiliary impeller 22 includes an auxiliary impeller inner ring 22a, and the outer periphery of the auxiliary impeller inner ring 22a is provided with a plurality of auxiliary impeller blades 22b distributed at intervals; wherein, the auxiliary impeller inner ring 22a is correspondingly and fixedly connected to the fixed impeller inner ring 21a; more preferably, in this embodiment, the auxiliary impeller blades 22b have a curved surface shape; the number of auxiliary impeller blades 22b is 6-10.

[0029] Preferably, in order to further improve the working efficiency of the fan 1, in this embodiment, the number of auxiliary impeller blades 22b is equal to the number of fixed impeller blades 21c, both being 8.

[0030] Preferably, in order to adjust the highest operating efficiency point of the fan, in this embodiment, the diameter of the inner ring 22a of the auxiliary impeller is not equal to the diameter of the inner ring 21a of the fixed impeller. Specifically, the diameter of the inner ring 22a of the auxiliary impeller can be set to be slightly larger than the diameter of the inner ring 21a of the fixed impeller, or the diameter of the inner ring 22a of the auxiliary impeller can be set to be slightly smaller than the diameter of the inner ring 21a of the fixed impeller.

[0031] This embodiment proposes to fix an auxiliary impeller 22 structure on one end face of the fixed impeller body 21. The auxiliary impeller 22 is located between the fixed impeller body 21 and the moving impeller 12, and is clearance-fitted with the moving impeller 12. Thus, the fixed impeller assembly provided in this application can be obtained. The fan 1 using this fixed impeller assembly can significantly improve the working efficiency of the fan.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixed impeller assembly for a fan, comprising a fixed impeller body mounted between a moving impeller casing and a motor housing, characterized in that, An auxiliary impeller is fixedly installed on one end face of the fixed impeller body; the auxiliary impeller is located between the fixed impeller body and the moving impeller, and is clearance-fitted with the moving impeller.

2. The impeller assembly of the fan according to claim 1, characterized in that, The fixed impeller body and the auxiliary impeller are fixedly installed and fitted together using fasteners.

3. The impeller assembly of the fan according to claim 2, characterized in that, The end face of the fixed impeller body is provided with a groove, and the auxiliary impeller is provided with a protrusion that is limited and matched with the groove; or the end face of the fixed impeller body is provided with a protrusion, and the auxiliary impeller is provided with a groove that is limited and matched with the protrusion.

4. The impeller assembly of the fan according to claim 1, characterized in that, The impeller body includes an inner impeller ring and an outer impeller ring located on the outer periphery of the inner impeller ring; wherein, a plurality of impeller blades are provided between the inner impeller ring and the outer impeller ring in a circumferentially spaced manner.

5. The impeller assembly of the fan according to claim 4, characterized in that, Each of the fixed impeller blades is curved; and / or the number of fixed impeller blades is 6-10.

6. The impeller assembly of the fan according to claim 1 or 4, characterized in that, The auxiliary impeller includes an inner ring, and the outer periphery of the inner ring is provided with a plurality of auxiliary impeller blades distributed at intervals; wherein the inner ring of the auxiliary impeller is fixedly connected to the inner ring of the fixed impeller.

7. The impeller assembly of the fan according to claim 6, characterized in that, The curved shape of the auxiliary impeller blades; and / or the number of the auxiliary impeller blades is 6-10.

8. The impeller assembly of the fan according to claim 7, characterized in that, The number of auxiliary impeller blades is equal to the number of fixed impeller blades.

9. The impeller assembly of the fan according to claim 7, characterized in that, The diameter of the inner ring of the auxiliary impeller is not equal to the diameter of the inner ring of the fixed impeller.

10. A fan, comprising a rotor and a moving impeller fixedly mounted as one unit, wherein a moving impeller cover is rotatably mounted on the outer periphery of the moving impeller, and a stator is rotatably mounted on the outer periphery of the rotor, the stator being fixedly mounted on the inner periphery of a motor housing, the motor housing being fixedly mounted to the moving impeller cover as one unit via a stator-impeller assembly; characterized in that, The impeller assembly is the impeller assembly of the fan according to any one of claims 1-9.

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