CN211288246U - Diffuser and motor - Google Patents

Abstract

The utility model provides a diffuser and motor, the diffuser includes: a chassis (10) and a blade assembly (20), the blade assembly (20) being connected to the chassis (10) by a lifting structure to adjust the height of the mating face (211) of the blade assembly (20). The technical scheme of the utility model improve the assembly precision guaranteeing the low-cost condition.

Description

Diffuser and motor

Technical Field

The utility model relates to the technical field of motors, concretely relates to diffuser and motor.

Background

At present, the motor includes shroud 1 and impeller 2 and diffuser 3 that set up in shroud 1, diffuser 3 carries out the interact with impeller 2 jointly after cooperating with shroud 1 and forms the wind channel, can know from fig. 1, clearance a between impeller 2 and shroud 1 is less, because this clearance has a big influence to motor air property and reliability, the impeller does not directly cooperate with the shroud again, consequently, for guaranteeing that this clearance is accurate usually adopt the mode that increases the spare part precision to go on, from the diffuser angle, need improve the precision of "cooperation height H" of the diffuser "that" cooperates with the shroud "that shows in fig. 2.

Generally, the assembly accuracy can be improved by improving the component machining and assembling accuracy, but the improvement of the accuracy causes a sharp increase in cost, and the improvement of the machining and assembling accuracy is limited, and it is difficult to improve the accuracy due to cost limitation. Therefore, there is a need for a diffuser that improves accuracy without substantially increasing tooling and assembly costs.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a diffuser and a motor to solve the problem that the precision of the fitting surface of the diffuser in the prior art causes the cost to increase sharply.

To achieve the above object, the present invention provides a diffuser, including: the lifting mechanism comprises a base plate and a blade assembly, wherein the blade assembly is connected with the base plate through a lifting structure so as to adjust the height of a matching surface of the blade assembly.

Further, the lifting structure comprises a first tooth-shaped structure arranged on the blade assembly and a second tooth-shaped structure arranged on the chassis, and the second tooth-shaped structure is matched with the first tooth-shaped structure.

Further, the first toothed structure is a first rack disposed on the bottom of the blade assembly.

Further, the blade subassembly includes a plurality of blades and connection structure, and a plurality of blades pass through connection structure and connect, and the bottom of at least one blade is equipped with first rack.

Further, the connection structure is a connection ring, and the bottom of each blade is disposed on the connection ring.

Furthermore, an annular groove and a mounting groove positioned on one side of the annular groove are arranged on the chassis, the annular groove is matched with the connecting ring, and the second tooth-shaped structure is arranged on the groove wall of the mounting groove.

Further, the second toothed structure is a second rack disposed on a groove wall of the mounting groove.

Further, the first rack is located outside the connection ring.

Furthermore, a chamfer is arranged at the joint of the top surface of the teeth on the first rack and the side surface thereof far away from the chassis.

Further, the ratio of the tooth height of the teeth on the second tooth-shaped structure to the tooth height of the teeth on the first tooth-shaped structure is in the range of 0.6-0.8.

Furthermore, the lifting structures are two, and the two lifting structures are arranged asymmetrically relative to the center of the diffuser.

The utility model also provides a motor, including the diffuser, the diffuser is foretell diffuser.

The utility model discloses technical scheme has following advantage: the blade subassembly passes through elevation structure and is connected with the chassis, can adjust the height of blade subassembly's fitting surface, realizes carrying out the on-line regulation of the height of the fitting surface of diffuser according to the installation result of preceding process in the installation, and then can transfer the clearance between impeller and the wheel cap to higher precision. And the lifting structure basically cannot cause the increase of processing and assembling cost, and the assembling precision is improved under the condition of ensuring low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a perspective view of a cut-away portion of a prior art motor;

FIG. 2 shows a perspective schematic view of a diffuser of the motor of FIG. 1

Fig. 3 is a schematic perspective view of a base plate of a diffuser provided by the present invention;

FIG. 4 shows a perspective view of one half of the chassis of FIG. 3;

FIG. 5 shows a partial perspective view of the chassis of FIG. 3;

FIG. 6 illustrates a perspective schematic view of a vane assembly of the diffuser of FIG. 3;

FIG. 7 illustrates a partial perspective view of the blade assembly of FIG. 6;

fig. 8 shows a schematic partial cross-sectional view of the diffuser of fig. 3.

Description of reference numerals:

1. a wheel cover; 2. an impeller; 3. a diffuser; 10. a chassis; 11. an annular groove; 12. installing a groove; 13. a second rack; 20. a blade assembly; 21. a blade; 211. a mating surface; 212. a first rack; 22. and (7) connecting rings.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 3 and 6, the diffuser of the present embodiment includes: a chassis 10 and a blade assembly 20, the blade assembly 20 being connected with the chassis 10 through a lifting structure to adjust the height of the mating surface 211 of the blade assembly 20.

By applying the diffuser of the embodiment, the blade assembly 20 is connected with the base plate 10 through the lifting structure, so that the height of the matching surface 211 of the blade assembly 20 can be adjusted, the on-line adjustment of the height of the matching surface of the diffuser according to the installation result of the previous process in the installation process is realized, and the gap between the impeller and the shroud can be adjusted to high precision. And the lifting structure basically cannot cause the increase of processing and assembling cost, and the assembling precision is improved under the condition of ensuring low cost.

In this embodiment, the lifting structure includes a first tooth structure disposed on the blade assembly 20 and a second tooth structure disposed on the chassis 10, the second tooth structure cooperates with the first tooth structure, and the blade assembly and the chassis are combined by mutual engagement of the two tooth structures, so that the lifting structure is simple in structure and convenient to machine and manufacture. And through the position of adjustment interlock tooth, realize the regulation of the cooperation height of diffuser for different cooperation heights can be realized to the diffuser, can cooperate with the impeller of not unidimensional, assembly deviation after diffuser and wheel cap cooperation, and then guarantee the air gap under different impeller spare part and the assembly deviation, thereby guarantee the air performance and the reliability of motor. Of course, the lifting structure can adopt other structures capable of lifting.

In the present embodiment, as shown in fig. 7, the first tooth structure is the first rack 212 disposed on the bottom of the blade assembly 20, which is simple in structure, convenient to process, and reduces the processing cost.

In this embodiment, the blade assembly 20 includes a plurality of blades 21 and a connecting structure, the plurality of blades 21 are connected by the connecting structure, and the bottom of at least one blade 21 is provided with the first rack 212, so that the matching surfaces of each blade can be ensured to be in the same plane, and the assembly precision is improved.

In the embodiment, as shown in fig. 6, the connection structure is a connection ring 22, and the bottom of each blade 21 is disposed on the connection ring 22, that is, the connection ring and the first rack are located on the same side of the blade, which is matched with the chassis, so that the structure of the connection structure is simplified, and the processing difficulty is reduced.

In the present embodiment, as shown in fig. 3 to 6, the chassis 10 is provided with an annular groove 11 and a mounting groove 12 located at one side of the annular groove 11, the annular groove 11 is engaged with the connection ring 22, and the second tooth structure is provided on a groove wall of the mounting groove 12. The annular groove and the connecting ring are matched to limit the radial direction of the blade assembly. The size of the annular groove is determined according to the size of the connecting ring, and the annular groove can be completely put down without overlarge gap.

In the present embodiment, as shown in fig. 8, the second tooth-like structure is a second rack 13 provided on a groove wall of the mounting groove 12. Of course, the second tooth-like structure may also be a plurality of teeth arranged on the groove wall of the mounting groove.

In the present embodiment, as shown in fig. 7, the first rack 212 is located outside the connection ring 22. Specifically, as shown in fig. 4 and 7, the second rack 13 is disposed on the outer groove wall of the mounting recess 12, and at this time, the teeth of the first rack 212 are disposed away from the connection ring, which can reduce the difficulty of processing. Of course, the first rack may also be located inside the connection ring.

In this embodiment, the junction of the top surface of the teeth on the first rack 212 and the side thereof remote from the chassis 10 is chamfered to adjust the teeth in engagement, thereby ensuring easy adjustment of the installation depth during installation.

In the embodiment, the ratio of the tooth height a of the teeth on the second tooth-shaped structure to the tooth height b of the teeth on the first tooth-shaped structure is in the range of 0.6-0.8, so that the meshed teeth can be further conveniently adjusted.

In this embodiment, elevation structure is equipped with two, and two elevation structure are for the asymmetric setting in center of diffuser, not only guarantee that the fitting surface of every blade is in the coplanar, improve the assembly precision, can also play the foolproof effect. Specifically, the first rack is arranged on the two asymmetric blades, and at this time, the two mounting grooves on the chassis are also asymmetrically arranged (as shown in fig. 3). Of course, the number of the first rack and the second rack is not limited to this, and needs to be adjusted according to specific situations.

In this embodiment, the size of the teeth on the first and second racks depends on the minimum unit of height adjustment that needs to be achieved.

As an alternative, the first tooth-like structure is provided on the connecting ring.

The utility model also provides a motor, including the diffuser, the diffuser is foretell diffuser.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

through the mutual interlock of two dentate structures, according to the installation depth of the tooth adjusting blade subassembly by the interlock, and then make in the production process the diffuser with the "cooperation height" of shroud complex fitting surface can carry out nimble regulation, "cooperation height" of difference has been realized, the corresponding size to higher precision of adjustable motor, the installation effectiveness of diffuser has been promoted, be favorable to realizing the high efficiency of the relevant wind channel structure of motor, the low noise, guarantee the reliability of the air performance of the runner of motor, and basically can not cause the increase of processing and assembly cost.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (12)

1. A diffuser, comprising: a chassis (10) and a blade assembly (20), the blade assembly (20) being connected to the chassis (10) by a lifting structure to adjust the height of the mating face (211) of the blade assembly (20).

2. The diffuser of claim 1, wherein the lifting structure includes a first tooth structure disposed on the vane assembly (20) and a second tooth structure disposed on the base plate (10), the second tooth structure cooperating with the first tooth structure.

3. The diffuser of claim 2, wherein the first tooth structure is a first rack (212) disposed on a bottom of the vane assembly (20).

4. A diffuser according to claim 3, characterized in that said blade assembly (20) comprises a plurality of blades (21) and a connecting structure by which said plurality of blades (21) are connected, the bottom of at least one of said blades (21) being provided with said first rack (212).

5. The diffuser of claim 4, wherein the connection structure is a connection ring (22), and a bottom of each of the vanes (21) is disposed on the connection ring (22).

6. The diffuser of claim 5, wherein the base plate (10) is provided with an annular groove (11) and a mounting groove (12) located on one side of the annular groove (11), the annular groove (11) is engaged with the connection ring (22), and the second tooth-like structure is provided on a groove wall of the mounting groove (12).

7. A diffuser according to claim 6, characterized in that said second tooth-like structure is a second rack (13) provided on a wall of said mounting groove (12).

8. The diffuser of claim 5, wherein the first rack (212) is located outboard of the attachment ring (22).

9. A diffuser according to claim 3, wherein the junction between the top surface of the teeth of the first rack (212) and the side thereof facing away from the base plate (10) is chamfered.

10. The diffuser of claim 2, wherein a ratio of a tooth height of the teeth on the second tooth structure to a tooth height of the teeth on the first tooth structure is in a range of 0.6 to 0.8.

11. The diffuser of any of claims 1 to 10, wherein there are two of the lifting structures, the two lifting structures being asymmetrically arranged with respect to a center of the diffuser.

12. An electrical machine comprising a diffuser, wherein the diffuser is as claimed in any one of claims 1 to 11.

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