Zero-friction coupling blade of sliding vane type air blower

Abstract

The utility model discloses a zero friction coupling blade of a sliding vane type air blower, which comprises a blade main body, one side of the blade main body is provided with a coupling structure which is in coupling connection with an inner ring of a rolling bearing, and the peripheral side of the coupling structure is provided with a supporting structure which is matched with the inner ring of the rolling bearing. The coupling structure is in coupling connection with the rolling bearing inner ring, the rotor drives the blades to rotate when rotating, the coupling structure area drives the bearing inner ring to rotate synchronously, and meanwhile, the supporting structure is used for supporting the blades to make close contact with the bearing inner ring, so that the blades press the bearing inner ring through the supporting area under the action of the elastic mechanism; the blades make close contact with the inner ring of the bearing and do not make contact with the inner side of the cylinder body, the blades and the bearing rotate synchronously, the blades almost do not slide or rub in a rotor groove, zero-friction coupling is achieved between the blades and the rotor, and the problem of friction between the blades and the rotor in a traditional air blower is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and particularly relates to a zero-friction coupling blade of a sliding vane blower. Background Art

[0002] A positive displacement fan is a type of fan that generates air flow through volume changes. It usually consists of one or more cavities with volume changes and a driving mechanism. When the cavity volume changes, air flow is generated. Positive displacement fans can be divided into different types according to the shape of the cavity and the way of volume change, and one of them is a sliding vane fan.

[0003] The rotor of a sliding vane fan is a segregated rotor, and the rotor is usually inlaid with slidable blades. Under the action of a spring on the rotor, the blades are in contact with the inner wall of the cylinder block. At this time, the rotor, the sliding vanes embedded in the rotor and the inner wall of the cylinder block form spaces with unequal volumes. During the operation of the sliding vane fan, the sliding vanes move along the inner wall of the cylinder block, sucking in, compressing and discharging air. In this process, since the blades are in direct contact with the cylinder block, the friction surface is large, which is prone to generate high temperature and abnormal noise. The blades and the cylinder block are also prone to wear and have a short service life, so optimization and improvement are needed.

[0004] In view of the above problems, some improvements have been proposed in the prior art. For example, the Chinese patent with the patent number CN 220227177 U discloses a new type of positive displacement fan, including: a cylinder block, bearings, a rotor, blades, sliding pins and springs; the inside of the cylinder block is hollow to form an air chamber, and the cylinder block is provided with an air inlet and an air outlet, and both the air inlet and the air outlet are communicated with the air chamber. The bearings are fixedly arranged in the air chamber, the rotor is eccentrically arranged in the bearings, and the rotor is provided with multiple groups of mounting grooves arranged oppositely along the radial direction of the rotor. Each mounting groove is provided with a blade, a sliding pin and a spring. Among them, the blade is located on the outside, the spring is located on the inside, one end of the sliding pin is connected to the spring, and the other end is in contact with the blade. And under the action of the spring, the sliding pin pushes the blade outwards to be in contact with the inner ring of the bearing.

[0005] The above prior art discloses a general overall structure of a positive displacement fan, but does not elaborate on the specific structure of the blades. Based on this, the present application proposes a practical solution. Summary of the Utility Model

[0006] Utility Model Objective: In order to overcome the problems existing in the prior art, the utility model provides a zero-friction coupling blade of a sliding vane blower, and solves the problem that the prior art lacks the specific structure of the blades of a positive displacement fan.

[0007] To solve the above problems, the utility model adopts the following technical solutions:

[0008] A zero-friction coupling blade for a sliding vane blower, comprising a blade body, one side of the blade body is provided with a coupling structure coupled to the inner ring of a rolling bearing, and an arc-shaped support structure adapted to the inner ring of the rolling bearing is provided on the periphery of the coupling structure.

[0009] Preferably, one coupling structure is provided at each of the two ends of one side of the blade body.

[0010] Preferably, when the blade body is coupled to the inner ring of the rolling bearing, the end side of the blade body and the end side of the inner ring of the rolling bearing are located at the same axial position of the blower.

[0011] Preferably, when the blade body is coupled to the inner ring of the rolling bearing, one end of the support structure extends to the end side of the blade body, and the other side extends to the outer end of the inner ring of the rolling bearing.

[0012] Preferably, the coupling structure is a rectangular boss adapted to the rectangular groove of the inner ring of the bearing.

[0013] Preferably, the coupling structure is a rectangular groove for the rectangular boss of the inner ring of the bearing.

[0014] Preferably, a clamping groove adapted to the elastic mechanism of the blower rotor is provided on the other side of the blade body.

[0015] Preferably, the side of the blade body provided with the coupling structure is an arc-shaped structure adapted to the cylinder block.

[0016] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: By adopting a blade with a special structure, it is coupled to the inner ring of the rolling bearing through the coupling structure. When the rotor rotates, it drives the blade to rotate, and drives the inner ring of the bearing to rotate synchronously through the coupling structure area. At the same time, the support structure is used to support the blade to be in close contact with the inner ring of the bearing, so that the blade presses the inner ring of the bearing through the support area under the action of the elastic mechanism. The blade is in close contact with the inner ring of the bearing and does not come into contact with the inner side of the cylinder block. The blade and the bearing rotate synchronously, and the blade hardly slides and generates no friction in the rotor groove. Zero-friction coupling is achieved between the blade and the rotor, avoiding the friction problem between the blade and the rotor in the traditional blower. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a sliding vane blower in the prior art;

[0018] Figure 2 It is a perspective view of the present utility model;

[0019] Figure 3 It is a front view of the present utility model;

[0020] Figure 4 It is a side view of the present utility model;

[0021] Figure 5 is the working principle diagram of the present utility model;

[0022] Figure 6 is the front view of another embodiment of the present utility model;

[0023] Wherein: 1. Blade body; 2. Coupling structure; 3. Support structure; 4. Inner ring of rolling bearing; 5. Card slot. Specific implementation manner

[0024] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0025] Any feature disclosed in this specification (including any additional claims, abstract, and drawings) can be replaced by other equivalent or similar-purpose alternative features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only an example of a series of equivalent or similar features.

[0026] As Figure 2-5 shown, a zero-friction coupling blade of a sliding vane blower includes a blade body 1. A coupling structure 2 coupled to the inner ring 4 of the rolling bearing is provided on one side of the blade body 1. An arc-shaped support structure 3 adapted to the inner ring of the rolling bearing is provided on the periphery of the coupling structure 2. By adopting a blade with a special structure, the coupling structure is coupled to the inner ring of the rolling bearing. When the rotor rotates, the blade is driven to rotate. The inner ring of the bearing is synchronously rotated through the coupling structure area. At the same time, the support structure is used to support the blade to be in close contact with the inner ring of the bearing, so that the blade presses the inner ring of the bearing through the support area under the action of the elastic mechanism. The blade is in close contact with the inner ring of the bearing and does not come into contact with the inner side of the cylinder. The blade and the bearing rotate synchronously. The blade hardly slides and does not generate friction in the rotor groove. Zero-friction coupling between the blade and the rotor is achieved, avoiding the friction problem between the blade and the rotor in the traditional blower.

[0027] In this embodiment, two coupling structures 2 are respectively provided at both ends on one side of the blade body 1, which can cooperate with two rolling bearings to rotate simultaneously, making the blower more stable during operation.

[0028] In this embodiment, when the blade body 1 is coupled to the inner ring 4 of the rolling bearing, the end side of the blade body 1 and the end side of the inner ring 4 of the rolling bearing are located at the same axial position of the blower.

[0029] In this embodiment, when the blade body 1 is coupled to the inner ring 4 of the rolling bearing, one end of the support structure 3 extends to the end side of the blade body, and the other side extends to the outer end of the inner ring of the rolling bearing. The size of the support structure is increased within a certain range, further improving the stability of the connection between the blade and the rolling bearing.

[0030] In this embodiment, the coupling structure 2 is a rectangular boss adapted to the rectangular groove of the inner ring of the bearing.

[0031] In this embodiment, a clamping groove 5 adapted to the elastic mechanism of the fan rotor is provided on the other side of the blade body 1.

[0032] In this embodiment, the side of the blade body where the coupling structure is provided is an arc structure adapted to the cylinder block. With this structure, the side of the blade body 1 close to the cylinder block is parallel to the cylinder block, and the minimum distance from each position to the cylinder block is equal, ensuring the stability during operation.

[0033] As Figure 5 shown, in another embodiment of the present invention, the coupling structure 2 is a rectangular groove of the rectangular boss of the inner ring of the bearing. It can be understood that other coupling connection methods with other structures can also be adopted between the inner ring 4 of the rolling bearing and the blade body 1.

[0034] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solutions of the present invention, and to completely describe the technical solutions, purposes and effects of the present invention. The purpose is to enable the public to understand the disclosed content of the present invention more thoroughly and comprehensively, and not to limit the protection scope of the present invention thereby.

[0035] The above embodiments are not exhaustive listings based on the present invention. In addition, there may be multiple other embodiments not listed. Any replacement and improvement made without violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A zero-friction coupling blade of a sliding vane blower, characterized in that: The invention comprises a blade body (1), one side of which is provided with a coupling structure (2) coupled to an inner ring of a rolling bearing (4), and the peripheral side of the coupling structure (2) is provided with an arc-shaped supporting structure (3) adapted to the inner ring of the rolling bearing.

2. The zero-friction coupling blade of a sliding vane blower according to claim 1, characterized in that: The coupling structure (2) is provided at each of the two ends of one side of the blade body (1).

3. The zero-friction coupling blade of a sliding vane blower according to claim 2, characterized in that: When the blade body (1) is coupled to the rolling bearing inner ring (4), the end side of the blade body (1) and the end side of the rolling bearing inner ring (4) are located at the same axial position of the fan.

4. The zero-friction coupling blade of a sliding vane blower according to claim 3, characterized in that: When the blade body (1) is coupled to the rolling bearing inner ring (4), one end of the support structure (3) extends to the end side of the blade body, and the other end extends to the outer end of the rolling bearing inner ring.

5. A zero friction coupling blade for a sliding vane blower according to any one of claims 1 to 3, characterized in that: The coupling structure (2) is a rectangular boss adapted to the rectangular groove of the inner ring of the bearing.

6. A zero friction coupling blade for a sliding vane blower according to any one of claims 1 to 3, characterized in that: The coupling structure (2) is a rectangular groove of a rectangular boss on the inner ring of the bearing.

7. The zero-friction coupling blade of a sliding vane blower according to claim 1, characterized in that: The other side of the blade body (1) is provided with a clamping groove (5) adapted to the elastic mechanism of the fan rotor.

8. The zero-friction coupling blade of a sliding vane blower according to claim 1, characterized in that: The blade body (1) has a coupling structure on one side thereof which is an arc-shaped structure adapted to the cylinder body.

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