High-stability air blower of automobile air conditioner

Abstract

The high-stability automobile air conditioner air blower comprises an installation base plate, a motor is installed in the middle of the outer surface of the lower end of the installation base plate, an impeller is arranged at the upper end of the installation base plate, and a lug plate assembly is fixedly installed on the outer wall of the installation base plate. Each lug plate assembly comprises a lug plate body, an annular mounting groove, a ring body, a threaded hole and a compression spring, and the surfaces of blades of the impeller are coated with oleophobic and hydrophobic coatings used for reducing dust attachment. According to the high-stability automobile air conditioner air blower, the oleophobic and hydrophobic coatings (such as Teflon) are additionally arranged on the surfaces of the blades, dust is difficult to adhere to the blades, continuous pre-tightening force can be provided after installation through the arranged lug plate assemblies, and the stability of bolts after installation is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning blower technology, specifically a highly stable automotive air conditioning blower. Background Technology

[0002] As a core component of the automotive air conditioning system, the performance of the automotive air conditioning blower directly affects the air delivery effect and stability of the air conditioning.

[0003] However, existing automotive air conditioning blowers still have the following significant problems in actual use:

[0004] 1. Dust and oil mist adhesion problem: During long-term operation, dust, oil mist and other impurities easily accumulate on the surface of the blower blades. These deposits can cause uneven distribution of blade mass, which in turn can lead to vibration and noise, not only reducing the working efficiency of the blower, but also potentially shortening its service life.

[0005] 2. Insufficient installation stability: Traditional blowers are usually directly fixed to the mounting base with bolts. However, due to vibration and temperature changes during vehicle operation, the bolts are prone to loosening, which leads to a decrease in the installation stability of the blower, and may even cause abnormal noise or displacement, affecting the reliability of the overall air conditioning system.

[0006] 3. High maintenance costs: Because dirt easily accumulates on the blades, they need to be cleaned or replaced frequently, which increases maintenance costs and workload.

[0007] Therefore, we propose a highly stable automotive air conditioning blower. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a highly stable automotive air conditioning blower. The blade surface is coated with an oleophobic and hydrophobic coating, making it difficult for dust to adhere and improving the stability of the blower installation. This effectively solves the problems in the background technology.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-stability automotive air conditioning blower, including a mounting base plate, a motor mounted in the middle of the lower outer surface of the mounting base plate, an impeller provided at the upper end of the mounting base plate, and an ear plate assembly fixedly mounted on the outer wall of the mounting base plate. The ear plate assembly includes an ear plate body, an annular mounting groove, an annular body, a threaded hole and a compression spring, and the impeller blades are coated with an oleophobic and hydrophobic coating to reduce dust adhesion.

[0012] Preferably, the oleophobic and hydrophobic coating is a Teflon coating or a nano-silica hydrophobic coating.

[0013] Preferably, both the windward and leeward sides of the blade are covered with the oleophobic and hydrophobic coating.

[0014] Preferably, the thickness of the oleophobic and hydrophobic coating is 5~50μm.

[0015] Preferably, one end of the ear plate is fixedly connected to the outer wall of the mounting base plate, the threaded hole is opened on the lower outer surface of the ear plate and extends to the upper outer surface of the ear plate, the annular mounting groove is opened on the lower outer surface of the ear plate, the compression spring is located in the annular mounting groove, the compression spring is fixed between the upper end of the annular mounting groove and the upper outer surface of the ring, the outer wall of the ring and the annular mounting groove are slidably connected, and the upper outer surface of the ring is elastically connected to the upper end of the annular mounting groove through the compression spring.

[0016] Preferably, the spring constant of the compression spring is 5~50 N / mm, and its free length is 0.8 times the depth of the annular mounting groove. When the ring is squeezed by the mounting base, the compression spring is compressed to 60%~80% of its original length, so that the ring continuously presses against the mounting base.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a highly stable automotive air conditioning blower, which has the following beneficial effects:

[0019] 1. This high-stability automotive air conditioning blower significantly reduces the adhesion of dust, oil mist and other impurities to the blade surface by coating the blade surface with an oleophobic and hydrophobic coating (such as Teflon or nano-silica hydrophobic coating). The coating covers both the windward and leeward sides of the blades to ensure comprehensive protection, thereby reducing the problem of uneven mass distribution caused by dirt accumulation, reducing vibration and noise, and extending the service life of the blower.

[0020] 2. This high-stability automotive air conditioning blower features an ear plate assembly designed to provide continuous preload through a compression spring. After bolt installation, the ring body is in close contact with the mounting base. The spring's reaction force counteracts loosening caused by vehicle vibration and temperature changes, ensuring long-term stable operation of the blower. The spring constant and free length of the compression spring are optimized (spring constant 5~50 N / mm, free length 0.8 times the depth of the annular mounting groove), providing appropriate clamping force during installation (compressed to 60%~80% of the original length), ensuring stability while avoiding excessive compression that could damage components.

[0021] 3. This highly stable automotive air conditioning blower features an oleophobic and hydrophobic coating with self-cleaning properties that reduces dirt buildup on the blade surface, lowering the cleaning frequency and maintenance workload. Improved installation stability reduces the failure rate caused by loosening, further reducing repair and replacement costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a highly stable automotive air conditioning blower according to the present invention.

[0023] Figure 2 This is a cross-sectional view of the blades and oleophobic / hydrophobic coating in a high-stability automotive air conditioning blower according to this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of a high-stability automotive air conditioning blower middle ear plate assembly according to the present invention.

[0025] Figure 4 This is a side cross-sectional view of the middle ear plate assembly of a high-stability automotive air conditioning blower according to the present invention.

[0026] In the diagram: 1. Mounting base plate; 2. Impeller; 3. Motor; 4. Ear plate assembly; 5. Blade; 6. Oleophobic and hydrophobic coating; 7. Ear plate body; 8. Annular mounting groove; 9. Ring body; 10. Threaded hole; 11. Compression spring. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] This embodiment is a highly stable automotive air conditioning blower.

[0029] like Figure 1-4 As shown, the device includes a mounting base 1, a motor 3 mounted on the middle of the lower outer surface of the mounting base 1, an impeller 2 provided at the upper end of the mounting base 1, and an ear plate assembly 4 fixedly mounted on the outer wall of the mounting base 1. The ear plate assembly 4 includes an ear plate body 7, an annular mounting groove 8, an annular body 9, a threaded hole 10 and a compression spring 11. The blades 5 of the impeller 2 are coated with an oleophobic and hydrophobic coating 6 to reduce dust adhesion.

[0030] The oleophobic and hydrophobic coating 6 is a Teflon coating or a nano-silica hydrophobic coating; both the windward and leeward sides of the blade 5 are covered with the oleophobic and hydrophobic coating 6; the thickness of the oleophobic and hydrophobic coating 6 is 5~50μm; one end of the ear plate body 7 is fixedly connected to the outer wall of the mounting base 1; a threaded hole 10 is opened on the lower outer surface of the ear plate body 7, and the threaded hole 10 extends to the upper outer surface of the ear plate body 7; an annular mounting groove 8 is opened on the lower outer surface of the ear plate body 7; a compression spring 11 is located in the annular mounting groove 8; the compression spring 11 is fixed between the upper end of the annular mounting groove 8 and the upper outer surface of the ring body 9; the outer wall of the ring body 9 and the annular mounting groove 8 are slidably connected; the upper outer surface of the ring body 9 is elastically connected to the upper end of the annular mounting groove 8 through the compression spring 11; the elastic coefficient of the compression spring 11 is 5~50. N / mm, its free length is 0.8 times the depth of the annular mounting groove 8. When the ring body 9 is squeezed by the mounting base surface, the compression spring 11 is compressed to 60%~80% of its original length, so that the ring body 9 continuously presses against the mounting base surface.

[0031] It should be noted that this utility model is a high-stability automotive air conditioning blower. The mounting base plate 1, impeller 2, blades 5 and motor 3 described in the text are all existing technologies and can be effectively known to those skilled in the art. Specific details will not be elaborated further. The ear plate assembly 4, after the mounting base plate 1 is bolted on, with the bolts passing through the threaded holes 10, causes the ring body 9 to contact and press against the mounting surface. The ring body 9 moves into the annular mounting groove 8, where it presses against the compression spring 11. The reaction force of the compression spring 11 increases the continuous preload after bolt installation, improving installation stability. An oleophobic and hydrophobic coating (such as Teflon) is added to the blade surface to prevent dust adhesion, further enhancing the blower's stability.

[0032] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-stability automotive air conditioning blower, comprising a mounting base plate (1), wherein a motor (3) is mounted on the middle of the lower outer surface of the mounting base plate (1), and an impeller (2) is provided on the upper end of the mounting base plate (1), characterized in that: The outer wall of the mounting base (1) is fixedly mounted with an ear plate assembly (4). The ear plate assembly (4) includes an ear plate body (7), an annular mounting groove (8), an annular body (9), a threaded hole (10) and a compression spring (11). The blades (5) of the impeller (2) are coated with an oleophobic and hydrophobic coating (6) to reduce dust adhesion.

2. The high-stability automotive air conditioning blower according to claim 1, characterized in that: The oleophobic and hydrophobic coating (6) is a Teflon coating or a nano-silica hydrophobic coating.

3. The high-stability automotive air conditioning blower according to claim 2, characterized in that: The windward and leeward sides of the blade (5) are covered with the oleophobic and hydrophobic coating (6).

4. A high-stability automotive air conditioning blower according to claim 3, characterized in that: The thickness of the oleophobic and hydrophobic coating (6) is 5~50μm.

5. A high-stability automotive air conditioning blower according to claim 4, characterized in that: One end of the ear plate body (7) is fixedly connected to the outer wall of the mounting base plate (1). The threaded hole (10) is opened on the lower outer surface of the ear plate body (7) and the threaded hole (10) extends to the upper outer surface of the ear plate body (7). The annular mounting groove (8) is opened on the lower outer surface of the ear plate body (7). The compression spring (11) is located in the annular mounting groove (8). The compression spring (11) is fixed between the upper end of the annular mounting groove (8) and the upper outer surface of the ring body (9). The outer wall of the ring body (9) and the annular mounting groove (8) are slidably connected. The upper outer surface of the ring body (9) is elastically connected to the upper end of the annular mounting groove (8) through the compression spring (11).

6. A high-stability automotive air conditioning blower according to claim 5, characterized in that: The elastic coefficient of the compression spring (11) is 5~50 N / mm, and its free length is 0.8 times the depth of the annular mounting groove (8). When the ring body (9) is squeezed by the mounting base, the compression spring (11) is compressed to 60%~80% of its original length, so that the ring body (9) continuously presses against the mounting base.

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