TWI494512B - Heat dissipation structure of scroll fluid mechanism and the manufacture method thereof - Google Patents

Description

Scroll fluid mechanical scroll heat dissipation structure and manufacturing method thereof

The present invention relates to a scroll fluid machine, and more particularly to a scroll heat dissipation structure such as a scroll compressor, a scroll vacuum pump, a scroll expander or a scroll blower, and a method of manufacturing the same.

According to the conventional scroll fluid machine, such as the aforementioned scroll compressor, scroll vacuum pump, scroll expander or scroll blower, etc., it generally has an orbiting scroll that is eccentrically operated through a transmission shaft support, and a A fixed scroll that meshes with the orbiting scroll to form a compression chamber capable of compressing a fluid such as air between the orbiting scroll and the fixed scroll.

However, in general, the scroll fluid machine is operated, because the compression process is prone to high temperature and high heat, especially when it is used in a harsh working environment, because it has more contact with the outside air, it will rotate around after a long period of use. The surface of the scroll and the fixed scroll tends to be contaminated with droplets, dust or dust, so as to reduce the heat dissipation effect of the surface. If a fine air intake filter is used to reduce dust adhesion, the cost will increase on the one hand, and if the amount of dust in the environment is large, the air intake filter will be easily clogged, and the mechanical efficiency will be lowered. Cause damage and other issues.

Furthermore, the general orbiting scroll and the fixed scroll are made of metal such as cast iron or aluminum alloy. In order to achieve rust prevention, lubrication or surface hardness, surface treatment is usually performed. However, the general metal surface treatment mostly causes the heat dissipation of the metal material itself to be deteriorated, and the heat dissipation effect is reduced.

In view of the above, the present inventors have made an effort to improve and solve the above-mentioned shortcomings, and have devoted themselves to research and cooperate with the application of the theory, and finally proposed a present invention which is reasonable in design and effective in improving the above-mentioned defects.

The main object of the present invention is to provide a scroll fluid mechanical scroll heat dissipating structure and a manufacturing method thereof, which are provided with fins on the orbiting scroll and the fixed scroll, and through the hydrophobic nano coating. Coating on the heat sink of either or both of the orbiting scroll and the fixed scroll to prevent dust from adhering to affect the heat dissipation effect, or the nano coating can increase the surface area ratio of the heat sink and its heat dissipation coefficient, Further improve or improve the heat dissipation effect.

In order to achieve the above object, the present invention provides a scroll heat dissipating structure of a scroll fluid machine, comprising an orbiting wrap, and a fixed wrap at a side of the orbiting scroll, and a wrap around the vortex The coil has an orbiting end plate, the fixed scroll has a fixed end plate, and a compression chamber is formed between the fixed end plate and the orbiting end plate; wherein the end plate or/and the fixed end plate are away from the compression chamber A plurality of fins are disposed on the end surface of the chamber, and a nano coating is disposed on each of the orbiting scrolls and the fixed scrolls.

In order to achieve the above object, the present invention provides a method of manufacturing a scroll heat dissipation structure of a scroll fluid machine, the steps of which are as follows: a) preparing an orbiting scroll, and a member for engaging the orbiting scroll Fixed scroll The orbiting scroll or/and the fixed scroll have a plurality of fins; b) coating the heat sink on each of the orbiting scroll and the fixed scroll The layer has the effect of preventing dust adhesion, increasing the specific surface area, or both of the foregoing functions, so as to improve the heat dissipation of the scroll.

<present invention>

1‧‧‧ orbiting scroll

10‧‧‧ orbiting end plates

10a‧‧‧ end face

10b‧‧‧ end face

100‧‧‧ shaft hole

11‧‧‧ orbiting scroll

12‧‧‧ Heat sink

120‧‧‧Nano coating

2‧‧‧ fixed scroll

20‧‧‧Fixed end plates

20a‧‧‧ end face

20b‧‧‧ end face

200‧‧‧Compression chamber

21‧‧‧Fixed scroll

22‧‧‧ Heat sink

220‧‧‧Nano coating

3‧‧‧ droplets

The first figure is a perspective exploded view of the present invention.

The second drawing is a perspective view of the orbiting scroll of the present invention.

The third figure is a perspective view of the fixed scroll of the present invention.

The fourth drawing is a sectional view of the combination of the present invention.

The fifth figure is an enlarged detail of Part A of the fourth figure.

The sixth figure is an enlarged detail of part B of the fourth figure.

Figure 7 is a schematic illustration of the present invention for droplets to stagnate on the surface of the nanocoating.

The detailed description of the present invention and the accompanying drawings are to be understood by the accompanying claims .

Please refer to the first, second and third figures, which are respectively an exploded perspective view of the present invention, a three-dimensional external view of the orbiting scroll, and a three-dimensional appearance of the fixed scroll. The invention provides a scroll fluid mechanical scroll heat dissipation structure and a manufacturing method thereof, comprising an orbiting scroll 1 and a fixed scroll 2 meshing with the orbiting scroll 1; wherein: The orbiting wrap 1 can be supported by the scroll fluid machine by a drive shaft (not shown) and can be driven by the drive shaft for eccentric operation. As shown in the fourth figure, the orbiting scroll 1 has an orbiting end plate 10, and a shaft hole 100 is disposed on the orbiting end plate 10, that is, the transmission shaft is pivotally connected.

The fixed scroll 2 is located on the side of the orbiting wrap 1 and meshes with the orbiting wrap 1 to move the fluid through the operation of the orbiting wrap. Referring to the fourth figure, the fixed scroll 2 has a fixed end plate 20, and a compression chamber 200 is formed between the fixed end plate 20 and the orbiting end plate 10 to be opposite to the compression chamber 200. The incoming fluid is compressed. In detail, the orbiting scroll 10 is disposed on the end surface 10a adjacent to the compression chamber 200, and the fixed end plate 20 is disposed on the orbiting end plate 10 with the orbiting scroll. At the end face 10a of the 11 end, the fixed end plate 20 is provided with a fixed scroll 21 adjacent to the end surface 20a of the compression chamber 200 with respect to the orbiting end plate 10, and the fixed scroll 21 and the orbiting scroll 11 engages within the compression chamber 200 to compress the incoming fluid.

As shown in the fourth to sixth figures, the present invention mainly provides a plurality of fins 12 on the end surface 10b of the winding end plate 10 away from the compression chamber 200, or the compression of the fixed end plate 2 away from the compression. A plurality of fins 22 are also disposed on the end surface 20b of the chamber 200, or a plurality of fins are disposed on the winding end plate 10 and the fixed end plate 2. The heat sinks 12 and 22 of the winding wrap 1 and the fixed wrap 2 are coated with a nano-coating layer 120, 220, and the surface of the nano-coating layers 120 and 220 is hydrophobic. Structure, or structure that can increase the specific surface area.

First, if the surface of the nano-coating layer 120, 220 is a hydrophobic structure, it may be a film made of a metal oxide (such as Tio2, ZnO or Al2O3) or a nitride (such as SiNx, Si3N4). The nano coatings 120, 220 may also be single or multi-layered Stacked structure. As shown in the seventh figure, when the droplets 3 such as water are stagnated on the surface of the nano-coating layers 120, 220, the contact angle θ with the droplets 3 transmitted through the hydrophobic structure is greater than 90 degrees. When the liquid wets the solid surface, the original gas-solid interface is replaced by the liquid-solid interface; when the liquid-solid interfacial tension is greater than the gas-solid interfacial tension, that is, the attraction between the solid and the gas is greater than There is a lower interfacial tension between the solid surface and the gas when the attraction between the solid and the liquid. Therefore, by forming the contact angle θ of the droplets 3 on the surface of the nano-coating layers 120 and 220 by more than 90 degrees, the interfacial tension between the nano-coating layers 120 and 220 and the air is low, so the droplets 3 The surface of the nano-coating layers 120, 220 is not easily wetted to prevent the adhesion of dust or dust.

Secondly, if the surface of the nano-coating layers 120 and 220 is a structure capable of increasing the surface area ratio, the material may be a single-layer or multi-layered nanoporous carbon material, and the coating may increase the specific surface area of the surface of the heating element. The heat transfer coefficient of the fins 12 and 22 is increased to improve the heat dissipation effect of the scroll. In addition, the surface treatment method of the orbiting scroll 1 and the fixed scroll 2 can be applied to the inner side of the compression chamber 200 to improve surface wear resistance or lubricity, that is, for the orbiting scroll 1 and the fixed scroll 2 adjacent to the end faces 10a, 20a of the compression chamber 200 and the orbiting scroll 11 and the fixed scroll 21 are subjected to surface treatment such as hardened anodizing, PTFE coating or molybdenum disulfide coating. The heat sinks 12 and 22 of the orbiting scroll 1 or/and the fixed scroll 2 are coated with the aforementioned nano coatings 120 and 220 to cover the surface, thereby achieving both wear resistance, lubricity and heat dissipation. Etc.

Therefore, the scroll heat dissipation structure of the scroll fluid machine of the present invention and the method of manufacturing the same can be obtained by the above-described structural composition and the flow of the steps thereof.

In summary, the present invention can achieve the intended use purpose, and solve the lack of the conventional, and because of the novelty and progress, fully meet the requirements of the invention patent application, snuggle If the patent law is filed, please check and grant the patent in this case to protect the rights of the inventor.

However, the above description is only a preferred embodiment of the present invention, and thus the scope of the present invention is not limited thereto, and the equivalent techniques and means, etc., which are used in the description of the present invention and the contents of the drawings, are the same. It is included in the scope of the present invention and is combined with Chen Ming.

1‧‧‧ orbiting scroll

10‧‧‧ orbiting end plates

10a‧‧‧ end face

10b‧‧‧ end face

100‧‧‧ shaft hole

11‧‧‧ orbiting scroll

12‧‧‧ Heat sink

2‧‧‧ fixed scroll

20‧‧‧Fixed end plates

20a‧‧‧ end face

20b‧‧‧ end face

200‧‧‧Compression chamber

21‧‧‧Fixed scroll

22‧‧‧ Heat sink

Claims (10)

A scroll fluid mechanical scroll heat dissipation structure comprising: an orbiting scroll having an orbiting end plate; and a fixed scroll located at a side of the orbiting scroll to mesh with the orbiting scroll The fixed scroll has a fixed end plate, and a compression chamber is formed between the fixed end plate and the bypass end plate; wherein the orbiting end plate or/and the fixed end plate are away from the compression chamber a plurality of fins are disposed on the end surface, and each of the orbiting wrap and the fixed scroll is provided with a nano coating on the heat sink, and the surface of the nano coating is a hydrophobic structure. That is, the droplets are stagnated on the surface of the nano-coating layer, and the contact angle of the surface with the droplets is greater than 90 degrees. The scroll fluid mechanical scroll heat dissipation structure according to claim 1, wherein the orbiting scroll and the fixed scroll are adjacent to an end surface of the compression chamber, and the orbiting scroll and the fixed vortex The sheet is applied with a surface treatment that is resistant to abrasion or lubricity. The scroll heat-dissipating structure of the scroll fluid machine according to claim 1, wherein the material of the nano-coating layer is a metal oxide or a nitride. The scroll fluid mechanical scroll heat dissipation structure according to claim 1, wherein the surface of the nano coating layer is a nanostructure that utilizes an increase in surface area ratio to increase a heat transfer coefficient. The scroll heat-dissipating structure of the scroll fluid machine according to claim 4, wherein the material of the nano-coating layer is a porous carbon material. The scroll heat dissipation of the scroll fluid machine according to any one of claims 1 to 5 A structure in which the nano-coating layer is a single-layer or multi-layered laminated structure. A method of manufacturing a scroll fluid mechanical scroll heat dissipation structure, the method comprising: a) preparing an orbiting scroll, and a fixed scroll for engaging the orbiting scroll, the orbiting scroll or And having a plurality of fins on the fixed scroll; b) coating a heat sink on each of the orbiting scroll and the fixed scroll, the nano coating The surface of the layer is a hydrophobic structure, that is, the droplets are stagnated on the surface of the nano-coating layer, and the contact angle of the surface with the droplet is greater than 90 degrees. The manufacturing method of the scroll heat-dissipating structure of the scroll fluid machine according to the seventh aspect of the invention, further comprising the step c) forming a compression chamber between the orbiting scroll and the fixed scroll, and A surface treatment with surface abrasion resistance or lubricity is applied to the inner side of the compression chamber. The method for manufacturing a scroll fluid mechanical scroll heat dissipation structure according to claim 8, wherein the surface treatment described in the step c) is a hardened anode treatment, a PFE coating or a molybdenum disulfide coating. The method for manufacturing a scroll heat-dissipating structure of a scroll fluid machine according to any one of claims 7 to 9, wherein the material of the nano-coating of the step b) is a metal oxide or a nitride. Or porous carbon material.