CN217129856U - Centrifugal fan and centrifugal wind wheel thereof - Google Patents

Abstract

The utility model relates to an air conditioning equipment technical field especially relates to a centrifugal fan and centrifugal wind wheel thereof. Including chassis and multi-disc blade, wherein, the lower extreme of multi-disc blade sets up on the chassis along same circumferential line, and the upper end edge of multi-disc blade is fixed and is equipped with annular frame, its characterized in that: the center of the chassis is axially provided with a shaft sleeve, one side of the shaft sleeve, which is opposite to the blades, extends, the shaft sleeve is provided with a shaft hole, the outer end of the shaft sleeve is axially provided with a notch communicated with the shaft hole, and the notch is arranged in a penetrating manner along the diameter direction of the shaft sleeve; when the motor shaft is inserted in the shaft hole, the shaft sleeves on two sides of the notch are spread and forked, and the motor shaft is tightly fixed in the shaft hole. Among the above-mentioned technical scheme, screw thread, jump ring and bolt on the motor shaft have been cancelled, have optimized through this kind of traditional assembly methods of bolted connection to can realize motor rapid Assembly.

Description

Centrifugal fan and centrifugal wind wheel thereof

Technical Field

The utility model relates to an air conditioning equipment technical field especially relates to a centrifugal fan and centrifugal wind wheel thereof.

Background

The centrifugal wind wheel is a wind wheel which can axially intake air and radially output air, and can apply work by utilizing centrifugal force depending on rotating speed and outer diameter to improve pressure of air.

At present, centrifugal wind wheels for air conditioners are all single-layer wind wheels. When the wind wheel is assembled with the motor, the shaft sleeve is pressed into the chassis of the centrifugal wind wheel through the motor shaft of the motor for installation, and the shaft end of the motor shaft is a threaded section and is fixed by bolts after penetrating through the shaft hole, so that the motor shaft is prevented from being separated. However, this assembly method is complicated and has low assembly efficiency.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a centrifugal wind wheel, which adopts a novel structure, and can not only improve the assembly efficiency with a motor, but also firmly clamp a motor shaft pressed into a shaft sleeve therein; a second object of the present invention is to provide a centrifugal fan having the above centrifugal wind wheel.

In order to achieve the above purpose, the utility model adopts the following technical scheme: including chassis and multi-disc blade, wherein, the lower extreme of multi-disc blade sets up on the chassis along same circumferential line, and the upper end edge of multi-disc blade is fixed and is equipped with annular frame, its characterized in that: a shaft sleeve is axially arranged in the center of the chassis, the shaft sleeve extends from one side of the shaft sleeve where the blades are located, a shaft hole is formed in the shaft sleeve, a notch communicated with the shaft hole is axially formed in the outer end of the shaft sleeve, and the notch is arranged in a penetrating mode in the diameter direction of the shaft sleeve;

when the motor shaft is inserted in the shaft hole, the shaft sleeves on two sides of the notch are spread and forked, and the motor shaft is tightly fixed in the shaft hole.

Among the above-mentioned technical scheme, cut open down from the upper end of axle sleeve and form the incision, the width of this incision is less than the external diameter of shaft hole internal diameter and motor shaft, consequently when the motor shaft is impressed in the shaft hole, the axle sleeve part of incision both sides is strutted, and the part extrusion motor shaft that is strutted simultaneously is fixed. So set up, cancelled screw thread, jump ring and the bolt on the motor shaft, optimized through this kind of traditional assembly methods of bolted connection to can realize motor rapid Assembly.

Preferably, the cross section of the shaft sleeve is in a boss shape, and the outer diameter of the outer end of the shaft sleeve to the inner end connected with the chassis is gradually increased. In the technical scheme, the cross section of the shaft sleeve is in a boss shape, so that the clamping inclination is designed on the outer side of the shaft sleeve, and a motor shaft inserted into a shaft hole can be clamped on the shaft sleeve; in the past, only the threaded section on the motor shaft is locked tightly, and the rest parts of the motor shaft have relatively large deviation when the centrifugal fan runs. The assembly mode can reduce assembly eccentricity, optimize assembly precision, stably and quickly operate when the centrifugal fan operates, and reduce vibration and noise.

Preferably, a plurality of reinforcing ribs are regularly arranged on the outer wall of the shaft sleeve in the circumferential direction, and the upper end faces of the reinforcing ribs are flush with the lower end faces of the notches. Among this technical scheme, the setting of strengthening rib can improve the intensity and the toughness of axle sleeve, and when axle sleeve upper portion was propped open, the lower part kept sufficient stability.

Preferably, a groove is formed in the outer wall of the shaft sleeve and located at the upper end of the reinforcing rib, and the groove extends to the outer end face of the shaft sleeve. Among this technical scheme, the setting of recess can make axle sleeve upper portion be propped open relatively easily to make the strengthening rib part still keep the straightness, prevent that axle sleeve upper portion from strutting the shape that drives the lower part, lead to the whole deformation of axle sleeve too big, reduce life.

Preferably, the upper end cover of axle sleeve is equipped with the locking jump ring, the upper end butt setting of locking jump ring and strengthening rib. Among this technical scheme, the locking jump ring can erect in the upper end of strengthening rib, is in order to hoop axle sleeve upper end incision both sides, and the motor shaft that further stabilizes prevents long-time user state, and the incision both sides strut and turn up outward.

Preferably, a plurality of flow guide holes are formed in the chassis and located in the peripheral circumference of the shaft sleeve, and the flow guide holes penetrate through two end faces of the chassis.

Preferably, the cross section of the flow guide holes is trapezoidal, and the flow guide holes are uniformly distributed along the same circumferential line by taking the shaft sleeve as a center.

Among the above-mentioned technical scheme, the setting of water conservancy diversion hole can reduce the condition of generating heat of motor with the inside amount of wind and outside intercommunication of blade to avoid the amount of wind to gush towards incision department entirely, avoid the axle sleeve ageing very fast, influence and the assembly precision of motor shaft.

A centrifugal wind wheel, including any above-mentioned centrifugal wind wheel, its characterized in that: the motor is characterized by further comprising a motor, and the end part of a motor shaft of the motor is pressed into the notch from the inner end of the shaft sleeve.

Drawings

Fig. 1 is a schematic perspective view of a centrifugal wind wheel.

Fig. 2 is a perspective view of another perspective view of a centrifugal wind wheel.

Fig. 3 is a schematic top view of a centrifugal wind wheel.

Fig. 4 is a schematic view of the structure of the motor assembled in the direction a-a of fig. 3.

Fig. 5 is a schematic bottom view of a centrifugal wind wheel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The first embodiment is as follows:

the centrifugal wind wheel comprises a chassis 1 and a plurality of blades 2, wherein the lower ends of the blades 2 are arranged on the chassis 1 along the same circumferential line, the upper end edges of the blades 2 are fixedly provided with an annular frame 3, the center of the chassis 1 is provided with a shaft sleeve 4 along the axial direction, the shaft sleeve 4 extends from one side of the blade 2, the shaft sleeve 4 is provided with a shaft hole 5, the outer end of the shaft sleeve 4 is provided with a notch 6 communicated with the shaft hole 5 along the axial direction, and the notch 6 is arranged in a penetrating manner along the diameter direction of the shaft sleeve 4;

when the motor shaft 7 is inserted into the shaft hole 5, the shaft sleeves 4 on two sides of the notch 6 are spread and forked, and the motor shaft 7 is fixed in the shaft hole 5 in a tensioning manner.

In the above technical solution, the cut 6 is cut downwards from the upper end of the shaft sleeve 4, and the width of the cut 6 is smaller than the inner diameter of the shaft hole 5 and the outer diameter of the motor shaft 7, so that when the motor shaft 7 is pressed into the shaft hole 5, the shaft sleeve 4 parts on both sides of the cut 6 are spread, and at the same time, the spread parts press the motor shaft 7 to be fixed. So set up, cancelled screw thread, jump ring and the bolt on the motor shaft 7, optimized through this kind of traditional assembly methods of bolted connection to can realize motor 12 rapid Assembly.

Further, the cross section of the shaft sleeve 4 is in a boss shape, and the outer diameter from the outer end of the shaft sleeve 4 to the inner end connected with the chassis 1 is gradually increased. In the technical scheme, the cross section of the shaft sleeve 4 is in a boss shape, the outer side of the shaft sleeve 4 is designed with a clamping inclination, so that the motor shaft 7 inserted into the shaft hole 5 can be clamped on the shaft sleeve 4; in the past, only the threaded section on the motor shaft 7 is locked tightly, and the rest parts are in a relatively large deviation amount when the centrifugal fan runs. The assembly mode can reduce assembly eccentricity, optimize assembly precision, stably and quickly operate when the centrifugal fan operates, and reduce vibration and noise.

Further, a plurality of reinforcing ribs 8 are regularly arranged on the outer wall of the shaft sleeve 4 in the circumferential direction, and the upper end faces of the reinforcing ribs 8 are flush with the lower end faces of the notches 6. In this technical scheme, the setting of strengthening rib 8 can improve the intensity and the toughness of axle sleeve 4, and when axle sleeve 4 upper portion was propped open, the lower part kept sufficient stability.

Further, a groove 9 is formed in the outer wall of the shaft sleeve 4 at the upper end of the reinforcing rib 8, and the groove 9 extends to the outer end face of the shaft sleeve 4. Among this technical scheme, the setting of recess 9 can make 4 upper portions of axle sleeve opened by the relatively easy to make 8 parts of strengthening rib still keep the straightness accuracy, prevent that 4 upper portions of axle sleeve from opening the shape that drives the lower part, lead to the whole deformation of axle sleeve 4 too big, reduce life.

Further, the upper end cover of axle sleeve 4 is equipped with locking jump ring 10, locking jump ring 10 sets up with the upper end butt of strengthening rib 8. Among this technical scheme, locking jump ring 10 can erect in the upper end of strengthening rib 8, is in order to hoop 4 upper end incisions 6 both sides of axle sleeve, further stabilizes motor shaft 7, prevents long-time user state, and 6 both sides of incision are strutted and are outwards perk.

Furthermore, a plurality of flow guide holes 11 are circumferentially arranged on the chassis 1 at the periphery of the shaft sleeve 4, and the flow guide holes 11 are arranged to penetrate through two end faces of the chassis 1.

Further, the cross section of the flow guide hole 11 is trapezoidal, and the plurality of flow guide holes 11 are uniformly distributed along the same circumferential line with the shaft sleeve 4 as the center.

Among the above-mentioned technical scheme, the setting of water conservancy diversion hole 11 can reduce the condition of generating heat of motor 12 with the inside amount of wind and outside intercommunication of blade 2 to avoid the amount of wind to surge toward incision department altogether, avoid axle sleeve 4 ageing very fast, influence and motor shaft 7's assembly precision.

Example two:

a centrifugal fan as shown in fig. 4, which includes the centrifugal wind wheel in the first embodiment, and further includes a motor 12, wherein the end of the motor shaft 7 of the motor 12 is pressed into the notch 6 from the inner end of the bushing 4.

In the embodiment, the outer side of a shaft sleeve 4 on a chassis 1 of the centrifugal fan is designed with a clamping inclination, a straight groove in the middle is cut open to form a notch 6, and after a motor shaft 7 on the other side is installed, a locking snap spring 10 is pressed into the side of the shaft sleeve 4 to finish assembly. In this scheme, simplified traditional motor assembly structure, cancelled screw thread and jump ring on the motor shaft 7, cancelled the bolt. The optimized structure is novel, the assembly precision is high, vibration and noise caused by assembly eccentricity are reduced, and the assembly efficiency is improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (8)

1. The utility model provides a centrifugal wind wheel, includes chassis (1) and multi-disc blade (2), wherein, the lower extreme of multi-disc blade (2) sets up on chassis (1) along same circumferential line, and the upper end edge of multi-disc blade (2) is fixed and is equipped with annular frame (3), its characterized in that: a shaft sleeve (4) is axially arranged in the center of the chassis (1), the shaft sleeve (4) extends from one side where the blades (2) are located, a shaft hole (5) is formed in the shaft sleeve (4), a notch (6) communicated with the shaft hole (5) is axially formed in the outer end of the shaft sleeve (4), and the notch (6) is arranged in a penetrating manner in the diameter direction of the shaft sleeve (4);

when a motor shaft (7) is inserted into the shaft hole (5), the shaft sleeves (4) on two sides of the notch (6) are spread and forked, and the motor shaft (7) is tightly fixed in the shaft hole (5).

2. A centrifugal wind wheel according to claim 1, characterized in that: the cross section of the shaft sleeve (4) is in a boss shape, and the outer diameter of the outer end of the shaft sleeve (4) to the inner end connected with the chassis (1) is gradually increased.

3. A centrifugal wind wheel according to claim 1 or 2, wherein: the outer wall of the shaft sleeve (4) is circumferentially and regularly provided with a plurality of reinforcing ribs (8), and the upper end faces of the reinforcing ribs (8) are flush with the lower end faces of the notches (6).

4. A centrifugal wind wheel according to claim 3, characterized in that: the upper end of the reinforcing rib (8) on the outer wall of the shaft sleeve (4) is provided with a groove (9), and the groove (9) extends to the outer end face of the shaft sleeve (4).

5. A centrifugal wind wheel according to claim 3, characterized in that: the upper end cover of axle sleeve (4) is equipped with locking jump ring (10), locking jump ring (10) set up with the upper end butt of strengthening rib (8).

6. A centrifugal wind wheel according to claim 1, characterized in that: a plurality of flow guide holes (11) are formed in the chassis (1) in the circumferential direction of the periphery of the shaft sleeve (4), and the flow guide holes (11) penetrate through two end faces of the chassis (1).

7. A centrifugal wind wheel according to claim 6, characterized in that: the cross section of the flow guide holes (11) is trapezoidal, and the flow guide holes (11) are uniformly distributed along the same circumferential line by taking the shaft sleeve (4) as the center.

8. A centrifugal wind wheel comprising a centrifugal wind wheel according to any of claims 1 to 7, characterized in that: the motor is characterized by further comprising a motor (12), and the end part of a motor shaft (7) of the motor (12) is pressed into the notch (6) from the inner end of the shaft sleeve (4).

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