WO2023248711A1 - Machine à fluide du type à spirales - Google Patents

Machine à fluide du type à spirales Download PDF

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Publication number
WO2023248711A1
WO2023248711A1 PCT/JP2023/019684 JP2023019684W WO2023248711A1 WO 2023248711 A1 WO2023248711 A1 WO 2023248711A1 JP 2023019684 W JP2023019684 W JP 2023019684W WO 2023248711 A1 WO2023248711 A1 WO 2023248711A1
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WIPO (PCT)
Prior art keywords
scroll
fluid machine
resin coating
type fluid
anodic oxide
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PCT/JP2023/019684
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English (en)
Japanese (ja)
Inventor
怜 安藤
昂希 柿沼
秀俊 藤井
宏光 宍戸
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サンデン株式会社
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Publication of WO2023248711A1 publication Critical patent/WO2023248711A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Definitions

  • the present application relates to a scroll-type fluid machine in which an anodized coating and a resin coating are provided on the surfaces of a pair of scroll bodies made of aluminum or an aluminum alloy (hereinafter also referred to as aluminum material).
  • a scroll-type fluid machine is known as a type of fluid machine.
  • This scroll-type fluid machine is equipped with a pair of scroll bodies consisting of a fixed scroll and a movable scroll inside, and the movable scroll rotates relative to the fixed scroll, so that the gas or liquid sucked into the fluid machine is It compresses or expands the volume of a certain fluid and discharges it to the outside of the fluid machine.
  • the pair of scroll bodies slide against each other and generate frictional heat on the sliding surfaces, which may cause the scroll bodies to fuse or adhere to each other, causing problems such as seizure. Therefore, in order to lower the coefficient of friction of the sliding surface, lubricating oil, a resin coating, etc. are provided on the surface of the scroll body.
  • the resin coating may peel off from the surface of the scroll body as a result of the scroll body being exposed to a high-speed, high-load environment for a long time when operating a fluid machine. .
  • the scroll body is made of aluminum material, melting and adhesion may occur at a lower temperature than iron or copper. If the scroll bodies adhere to each other at the part where the resin coating has peeled off, there is a risk that the fluid machine will be damaged.
  • Patent Document 1 states, ⁇ After roughening the surface of the spiral wall of at least one member of a set of scroll members to form a fluororesin coating with a thickness of 20 to 1000 ⁇ m, A method for manufacturing a scroll member for a positive displacement compressor is disclosed in which the spiral walls are pressed into contact with each other and perform eccentric revolution movement, thereby slidingly abrading the fluororesin coating to a predetermined thickness.
  • the material constituting the scroll member according to Patent Document 1 is a metal such as steel or aluminum.
  • Patent Document 2 states, ⁇ An alumite film filled with a solid lubricant such as molybdenum disulfide is formed on the surfaces of a fixed scroll and an oscillating scroll, and at least a portion of one of the scrolls on which this film is formed is A scroll-type oil-free fluid machine coated with a fluorinated resin-based synthetic resin material is disclosed.
  • a solid lubricant such as molybdenum disulfide
  • the surface roughening treatment method adopted in the invention described in Patent Document 1 is a blasting method.
  • This blasting method is not suitable as a method for finely roughening the surface of a member with good control.
  • a scroll member whose surface has been roughened by blasting has a significantly increased surface roughness compared to the surface of the constituent metal that has not been subjected to surface roughening treatment. Therefore, in order to form a fluororesin coating on a roughly flat surface without exposing the roughened metal surface, it is necessary to increase the thickness of the fluororesin coating excessively. production costs will increase.
  • Patent Document 2 it is necessary to form an alumite film filled with a solid lubricant on the surfaces of both the fixed scroll and the oscillating scroll, which takes time and cost to manufacture the product.
  • the invention of the present application provides that when a scroll-type fluid machine that is internally equipped with a fixed scroll and a movable scroll made of aluminum or aluminum alloy is operated based on strict market requirements, both scroll bodies can be operated for a long time in a high-speed and high-load environment. Even if exposed for a long time, there is no risk of abnormal wear of the resin coating or peeling off from the surface of the scroll body, causing problems such as seizure, wear, or damage to the scroll body, and also reduces manufacturing costs of the product.
  • the object of the present invention is to provide a scroll-type fluid machine that has the following features.
  • the scroll-type fluid machine is a scroll-type fluid machine capable of compressing or expanding fluid in a space formed between a pair of relatively rotatable scroll bodies, and the scroll body is made of aluminum or Made of an aluminum alloy, the surface of the scroll body is coated with an anodic oxide coating having a thickness of 0.3 ⁇ m to 10.0 ⁇ m, and the surface of the anodic oxide coating is provided with a resin coating.
  • the anodic oxide coating of the scroll-type fluid machine according to the present application preferably has a surface roughness Rz of 1.5 ⁇ m to 9.0 ⁇ m.
  • the thickness of the resin coating of the scroll-type fluid machine according to the present application is preferably 5 ⁇ m or more.
  • the scroll body in the scroll-type fluid machine according to the present application has a bottom plate and a spiral wrap protruding from the surface of the bottom plate, and the wrap height of one scroll body is higher than the wrap height of the other scroll body. Preferably, it is designed to be low.
  • the anodic oxide coating and resin coating of the scroll-type fluid machine according to the present application are designed such that the wrap height of one of the pair of scroll bodies is lower than the wrap height of the other scroll body. In this case, it is preferable that the wraps are provided on the surface of the scroll body in order of lower wrap height.
  • FIG. 2 shows a cross-sectional view of a pair of scroll bodies in the scroll-type fluid machine according to the present application.
  • (A) shows an example of the present application
  • (B) shows an external photograph of a comparative example.
  • the scroll-type fluid machine according to the present application is capable of compressing or expanding fluid in a space formed between a pair of relatively rotatable scroll bodies.
  • the scroll body is made of aluminum or an aluminum alloy, and the surface of the scroll body is coated with an anodic oxide coating having a thickness of 0.3 ⁇ m to 10.0 ⁇ m. A resin coating is provided on the surface of the anodic oxide coating.
  • the scroll-type fluid machine according to the present application has the above configuration, so that when a scroll-type fluid machine that is internally equipped with a fixed scroll and a movable scroll made of aluminum or aluminum alloy is operated based on strict market requirements, both scrolls can be used.
  • the resin coating 4 may wear abnormally or peel off from the surface of the scroll body, causing problems such as seizure, wear, and damage to the scroll body.
  • a scroll-type fluid machine sucks gas or liquid fluid such as air, water, various refrigerants, etc. from the suction port of the fluid machine, and uses the orbiting motion of the movable scroll 2 relative to the fixed scroll 1 to increase the volume of the fluid. It is compressed or expanded and discharged to the outside from the discharge port.
  • the fixed scroll 1 and the movable scroll 2 have a spiral wrap that protrudes from the top surface 6 of the bottom plate (here, the top surface 6 of the bottom plate refers to the surface of one bottom plate from which the spiral wrap protrudes). say).
  • a pair of fixed scroll 1 and movable scroll 2 are fitted so that the spiral wraps are engaged with each other, and the scroll-type fluid machine is manufactured by disposing this in a housing.
  • the space formed by each of the spiral wraps of the fixed scroll 1 and the movable scroll 2 becomes a part that compresses or expands the sucked fluid.
  • the fixed scroll 1 and the movable scroll 2 are made of metal materials, one or both surfaces may be coated with lubricating oil, resin coating, etc., as known techniques, in order to reduce the coefficient of friction of the sliding surfaces. is provided.
  • a pair of scroll bodies used in a scroll-type fluid machine usually has a structure in which the height of the spiral wrap in both scroll bodies is almost the same, and the spiral wrap height of the fixed scroll 1 and the movable scroll 2 is This reduces the surface pressure applied to the top surface of the wrap.
  • the spiral wrap heights are almost the same, depending on the hardness and lubricity of the surface treatment material provided for the purpose of improving lubricity and protecting the scroll body surface, the spiral wrap height may vary.
  • the upper surface 5 (the tip of the wrap) may be worn or damaged.
  • the movable scroll 2 is configured to have a higher spiral wrap height than the fixed scroll 1, as in the configuration shown in FIG. 1, for example, when the scroll-type fluid machine is operated, Due to the orbiting motion of the movable scroll 2, the bottom plate upper surface 6 side of the fixed scroll 1 is intermittently sliding, and the upper surface side of the spiral wrap of the movable scroll 2 is continuously sliding.
  • the possibility that the upper surface 5 (the tip of the wrap) of the spiral wrap of the scroll body will be worn out or damaged can be significantly reduced.
  • the manufacturing cost of the product is to be suppressed by providing the resin coating 4 only on one of the scroll bodies, the top surface of the wrap will continuously slide when the fluid machine is operated.
  • the scroll body with the lower wrap height is In the case where the resin coating 4 is provided only on the surface of the scroll body, it is preferable to apply the anodic oxide coating 3, which will be described later, only on the surface of the scroll body with the lower wrap height.
  • the anodic oxide coating 3 is applied to the surface of the scroll body, the surface roughness Rz increases. Therefore, if the surface of the anodic oxide coating 3 remains exposed, there is a risk of it being aggressive, such as damaging the other party's scroll body (more specifically, the resin coating provided on the other party's scroll body). It is.
  • the scroll body used in the scroll-type fluid machine according to the present application uses aluminum or an aluminum alloy (aluminum material) as its constituent material because it is easy to process, lightweight, and relatively inexpensive. If particularly high strength is required for the scroll body, an aluminum silicon alloy (also referred to as an Al-Si alloy or 4000 series aluminum alloy) may be used as the constituent material.
  • aluminum alloy aluminum material
  • an aluminum silicon alloy also referred to as an Al-Si alloy or 4000 series aluminum alloy
  • fluid machines that incorporate scroll bodies must not only be able to operate at high speeds for long periods of time, but also be able to withstand high-load environments.
  • the durability of the scroll body is required.
  • the resin coating 4 is directly provided on the surface of the scroll body, there is a risk that the resin coating 4 will peel off when the fluid machine is operated based on market demands.
  • the scroll body is made of aluminum material, melting and adhesion may occur at a lower temperature than iron or copper. If the scroll bodies adhere to each other at the part where the resin coating 4 has peeled off, there is a risk that the fluid machine will be damaged.
  • the scroll body can be formed. Since the surface roughness Rz is increased compared to the aluminum material (aluminum material base), the adhesion of the resin coating 4 is improved due to the anchor effect.
  • the anodic oxide film 3 is made of aluminum oxide with a porous surface.
  • the surface roughness Rz changes depending on the film thickness, and the value of Rz increases rapidly from around 0.15 ⁇ m to 2.0 ⁇ m in film thickness. Therefore, when the anodic oxide coating 3 having a predetermined thickness is applied to the surface of the scroll body, the adhesion between the anodic oxide coating 3 and the resin coating 4 is improved due to the anchor effect. Since the surface of the anodic oxide film 3 is porous as described above, the apparent surface area (specific surface area) is large, and the anchor effect is more likely to be obtained compared to the case where the surface roughness Rz is simply large. .
  • the anodic oxide coating 3 by applying the anodic oxide coating 3 to the surface of the scroll body, even if a part of the resin coating 4 were to peel off, the exposed surface would not be the aluminum material (aluminum base) that constitutes the scroll body, but the anodic oxide coating. (aluminum oxide). Therefore, it is possible to prevent the scroll bodies from adhering to each other.
  • an anodic oxide coating 3 having a predetermined thickness on the surface of the scroll body and providing a resin coating 4 on the surface of this anodic oxide coating 3 the scroll body can be operated in high-speed and high-load environments. Even if the internal fluid machine is operated for a long time, it is possible to reliably prevent the resin coating 4 from peeling off from the scroll body and damage to the fluid machine due to adhesion of the scroll bodies.
  • the preferred thickness of the anodic oxide film 3 is 0.3 ⁇ m to 10.0 ⁇ m. If the film thickness of this anodic oxide film 3 is less than 0.3 ⁇ m, the surface roughness Rz will be almost larger than that of the aluminum material (aluminum material material before anodizing treatment) that constitutes the scroll body. First, it is not preferable because the effect of improving the adhesion of the resin coating 4 due to the anchor effect tends not to be obtained. On the other hand, when the film thickness of the anodic oxide film 3 exceeds 10.0 ⁇ m, the surface roughness Rz becomes too large, and the surface of the anodic oxide film 3 is not exposed and the resin film 4 has a generally flat surface.
  • a more preferable thickness of the anodic oxide film 3 is 0.3 ⁇ m to 3.0 ⁇ m.
  • the film thickness of the anodic oxide film 3 is 3.0 ⁇ m or less, its surface roughness Rz becomes appropriate, and the film thickness exceeds that required for protecting the scroll body surface and improving lubricity. This is because there is no need to form the coating 4, and the manufacturing cost of the product can be suppressed.
  • the arithmetic mean roughness Ra becomes smaller than when the film thickness exceeds 3.0 ⁇ m, and the film thickness of the anodic oxide film 3 becomes smaller. This is because variations can be kept small.
  • the anodic oxide film has a surface roughness Rz (maximum surface roughness) of 1.5 ⁇ m to 9.0 ⁇ m. If the surface roughness Rz of this anodic oxide film is less than 1.5 ⁇ m, it is not preferable because the effect of improving the adhesion of the resin film 4 due to the anchor effect tends not to be obtained.
  • ⁇ Resin coating> Although there is no particular restriction on the composition of the resin coating 4, it is preferable that it contains a lubricant and a binder resin.
  • the lubricant include fluororesins such as tetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), and perfluoroethylene fluorocopolymer (FEP), molybdenum disulfide, and graphite.
  • PTFE tetrafluoroethylene
  • PFA perfluoroalkoxyalkane
  • FEP perfluoroethylene fluorocopolymer
  • molybdenum disulfide molybdenum disulfide
  • graphite graphite
  • the resin coating 4 contains a lubricant such as a fluororesin, molybdenum disulfide, or graphite
  • a lubricant such as a fluororesin, molybdenum disulfide, or graphite
  • the formation of the resin coating 4 on one of the pair of scroll bodies is omitted from the viewpoint of reducing the manufacturing cost of the product.
  • the binder resin it is preferable to use polyamide-imide resin in terms of heat resistance, durability, processability, and the like. This polyamide-imide resin is the main component of the resin coating 4 and is also a component for fixing the lubricant to the scroll body.
  • the preferred thickness of the resin coating 4 is 5 ⁇ m or more. If the thickness of the resin coating 4 is less than 5 ⁇ m, depending on the thickness of the anodic oxide coating 3, the resin coating 4 may be formed on the surface without exposing the surface of the anodic oxide coating 3, and the resin coating 4 may be This is not preferable because it tends to be difficult to make the surface generally flat. In addition, if the film thickness of this resin coating 4 is less than 5 ⁇ m, even if the wrap height of one scroll body is designed to be lower than the wrap height of the other scroll body, the fluid machine can be operated for a long time and at high speed.
  • the thickness of the resin coating 4 is more preferably 5 ⁇ m to 30 ⁇ m. If the thickness of the resin coating 4 exceeds 30 ⁇ m, the thermal conductivity of the scroll body provided with the resin coating 4 will decrease, resulting in a decrease in heat dissipation, making it difficult to control dimensional changes in the resin coating 4 due to frictional heat, and causing problems in the product. This is not preferable because it increases the manufacturing cost.
  • the film thickness of the resin coating 4 exceeds 30 ⁇ m, the surface of the resin coating 4 and the surface of the other scroll body (if the surface of the other scroll body is also provided with an anodized coating and a resin coating, Because the distance between the other scroll body and the surface of the resin coating 4 becomes too close and the time required for the other scroll body and the resin coating 4 to blend together is short, due to contact between the other scroll body and the surface of the resin coating 4, This is not preferable because the resin coating 4 tends to crack or peel.
  • the surfaces of the scroll body in which the thickness of the resin coating 4 is preferably within the above-mentioned numerical range are the upper surface 5 of the spiral wrap and the upper surface 6 of the bottom plate.
  • the side surface 7 of the spiral wrap has a relatively small frictional force caused by sliding and slides intermittently, the lubricating oil applied to the surface of the member in advance is easily retained. Therefore, even if the resin coating 4 on the side surface 7 of the spiral wrap has a thickness of 20 ⁇ m or less, problems such as seizure, abrasion, and damage to the scroll body tend not to occur. Therefore, it can be said that the preferred thickness of the resin coating 4 on the side surface 7 of the spiral wrap is 5 ⁇ m to 20 ⁇ m.
  • the scroll type fluid machine according to the present application has been described above. Below, a method for manufacturing a scroll type fluid machine according to the present application will be explained.
  • the anodic oxide film 3 provided on the surface of the scroll body can be formed by an anodic oxidation treatment using a conventionally known sulfuric acid bath, oxalic acid bath, or the like.
  • the treatment conditions are, for example, a sulfuric acid concentration of 10% by mass to 20% by mass, a treatment temperature of 10°C to 25°C, and a current density of 0.5A/dm 2 to 1.5A/dm 2 .
  • the oxalic acid concentration is 2.0% by mass to 5.0% by mass
  • the treatment temperature is 20°C to 35°C
  • the current density is 2.0A/dm 2 to 3.
  • a processing condition of .0 A/dm 2 may be adopted.
  • the resin coating 4 provided on the surface of the anodic oxide coating 3 can be formed using a resin composition by a conventionally known method such as a spray method or a dipping method.
  • a spray method it is possible to form a resin coating with a desired thickness in a shorter time on a scroll body having a complicated shape, compared to, for example, a dipping method. This is preferable in that the coating 4 can be formed only on desired areas as needed.
  • the atomization pressure in the spray method is preferably 0.05 MPa to 0.2 MPa, although it depends on the components of the resin composition that is the raw material.
  • this atomization pressure is less than 0.05 MPa, the resin composition as a raw material cannot be sufficiently sprayed onto the corner formed by the side surface 7 of the spiral wrap and the top surface 6 of the bottom plate.
  • the thickness of the resin coating 4 in this portion tends to be thinner than a suitable numerical range, which is not preferable.
  • the raw material resin when this atomization pressure exceeds 0.2 MPa, the raw material resin This is not preferable because the composition tends to be sprayed in excess and the thickness of the resin coating 4 in the area tends to deviate from the preferred numerical range or become thicker.
  • the resin composition is left in a heating device to heat the aluminum material constituting the scroll body. By performing heat treatment for 15 to 120 minutes at a temperature of 160° C. to 180° C., which is a temperature that does not cause deformation, a scroll body having a resin coating 4 on the surface of the anodic oxide coating 3 can be obtained.
  • the composition of the resin composition used in the spray method there are no particular restrictions on the composition of the resin composition used in the spray method, but one containing a lubricant, a binder resin, and a solvent is preferred.
  • the lubricant include fluororesins such as tetrafluoroethylene (PTFE), molybdenum disulfide, and graphite.
  • the solvent include compounds such as N-methyl-2-pyrrolidone (NMP) and 3-methoxy-N,N-dimethylpropionamide (MPA).
  • NMP N-methyl-2-pyrrolidone
  • MPA 3-methoxy-N,N-dimethylpropionamide
  • the binder resin which is the main component include polyamideimide resin and the like. Among these compounds such as NMP and MPA, it is preferable to use N-methyl-2-pyrrolidone (NMP) from the viewpoint of the influence on the health of the user.
  • the resin composition is made by combining a lubricant and a polyamide-imide resin (or a polyamide-imide resin varnish prepared by dissolving the polyamide-imide resin in a solvent such as NMP at a high concentration) in an N-methyl chloride solution at room temperature or around 30°C. It can be obtained by mixing and stirring with -2-pyrrolidone (NMP).
  • NMP -2-pyrrolidone
  • the aluminum fixed scroll After degreasing and cleaning the aluminum fixed scroll, it was placed in a sulfuric acid bath consisting of an aqueous sulfuric acid solution with a concentration of 15% by mass, with the fixed scroll as an anode and carbon (carbon rod) as a cathode, at a bath temperature of 20°C and a current density of 1.0A. Electricity was applied for 4 minutes under the condition of /dm 2 to obtain a fixed scroll with an anodic oxide coating.
  • a sulfuric acid bath consisting of an aqueous sulfuric acid solution with a concentration of 15% by mass
  • the resin-coated fixed scroll obtained by the above method was cut and filled with resin, and the surface was polished to a mirror finish. Then, the average thickness of the anodic oxide coating and the arithmetic surface roughness were measured using a metallurgical microscope (DSX500 manufactured by Olympus Corporation). (Ra), maximum surface roughness (Rz), and film thickness of the resin coating were measured. As a result, the average film thickness of the anodic oxide film was 0.5 ⁇ m, the arithmetic surface roughness (Ra) was 0.3 ⁇ m, and the maximum surface roughness (Rz) was 1.8 ⁇ m. The results are shown in Table 1. Further, the average thickness of the resin coating on the upper surface 5 of the spiral wrap in the fixed scroll was 18 ⁇ m, and the average thickness of the resin coating on the upper surface 6 of the bottom plate was 14 ⁇ m.
  • a fixed scroll with a resin coating was separately manufactured in the same manner as described above, and combined with an aluminum movable scroll, a scroll compressor, which is a fluid machine, was manufactured.
  • the height of the spiral wrap in the fixed scroll is designed to be lower than the height of the spiral wrap in the movable scroll.
  • This scroll compressor was operated for several hours at a rotational speed of 10,000 rpm and a pressing surface pressure of 6 MPa to conduct a durability test in a high speed and high load environment. After the durability test, this scroll compressor was disassembled and the appearance of the fixed scroll with resin coating was visually observed. There was no peeling or abnormal wear on the resin coating, and there were no problems such as seizure between the scroll bodies. It didn't happen either.
  • An external photograph of the resin-coated fixed scroll after this durability test is shown in FIG. 2(A).
  • Example 2 differs from Example 1 only in that the time for anodizing the fixed scroll was changed from 4 minutes to 9 minutes. Therefore, descriptions of the methods for forming the anodic oxide coating and the resin coating on the fixed scroll and the evaluation methods thereof will be omitted.
  • the average film thickness of the anodic oxide film of Example 2 was 3.0 ⁇ m, the arithmetic surface roughness (Ra) was 1.1 ⁇ m, and the maximum surface roughness (Rz) was 5.9 ⁇ m. Moreover, no peeling or abnormal wear occurred in the resin coating after the durability test, and no problems such as seizure between the scroll bodies occurred.
  • the evaluation results are shown in Table 1.
  • Example 3 differs from Example 1 only in that the time for anodizing the fixed scroll was changed from 4 minutes to 15 minutes. Therefore, descriptions of the methods for forming the anodic oxide coating and the resin coating on the fixed scroll and the evaluation methods thereof will be omitted.
  • the average film thickness of the anodic oxide film of Example 3 was 5.0 ⁇ m, the arithmetic surface roughness (Ra) was 1.7 ⁇ m, and the maximum surface roughness (Rz) was 8.8 ⁇ m. Furthermore, no peeling or abnormal wear occurred in the resin coating after the durability test, and no problems such as seizure occurred on the scroll body.
  • the evaluation results are shown in Table 1.
  • Example 4 differs from Example 1 only in that the time for anodizing the fixed scroll was changed from 4 minutes to 35 minutes. Therefore, descriptions of the methods for forming the anodic oxide coating and the resin coating on the fixed scroll and the evaluation methods thereof will be omitted.
  • the average film thickness of the anodic oxide film of Example 4 was 10.0 ⁇ m, the arithmetic surface roughness (Ra) was 1.6 ⁇ m, and the maximum surface roughness (Rz) was 8.1 ⁇ m. Furthermore, no peeling or abnormal wear occurred in the resin coating after the durability test, and no problems such as seizure occurred on the scroll body.
  • the evaluation results are shown in Table 1.
  • Comparative Example 1 differs from Example 1 only in that the fixed scroll was not anodized, but only degreased and cleaned, and then a resin coating was directly formed on the surface of the fixed scroll. Therefore, the description of the method of forming a resin coating on the fixed scroll and the evaluation method thereof will be omitted.
  • the fixed scroll (aluminum base material) of Comparative Example 1 had an arithmetic surface roughness (Ra) of 0.1 ⁇ m and a maximum surface roughness (Rz) of 0.7 ⁇ m. In Comparative Example 1, some peeling occurred in the resin coating after the durability test.
  • the evaluation results and an external photograph are shown in Table 1 and FIG. 2(B).
  • Comparative Example 1 in which a resin coating was directly formed on the surface of one of a pair of scroll bodies made of aluminum material without forming an anodized coating, a fluid machine could be operated for a long time in a high-speed and high-load environment. As a result, part of the resin film peeled off. Therefore, it can be inferred that if the fluid machine continues to operate under the conditions of the above-described durability test, problems such as seizure, wear, and damage may occur in the scroll body.
  • the scroll-type fluid machine sucks gas or liquid fluid such as air, water, various refrigerants, etc. into the fluid machine, and compresses or expands the volume using a pair of scroll bodies arranged inside. It can be used as a device for discharging the liquid to the outside of the fluid machine. Specifically, it can be used for power sources of various machines, devices for air conditioning systems, etc. In particular, it can be suitably used in mechanical fields such as the automobile industry where strict quality is required.

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  • General Engineering & Computer Science (AREA)
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Abstract

[Problème] La présente invention aborde le problème de fournir une machine à fluide du type à spirales dotée intérieurement d'une spirale fixe et d'une spirale mobile comprenant un matériau d'aluminium, la machine à fluide du type à spirales ne risquant pas d'avoir des défauts tels que des marques de combustion, de l'usure et des endommagements dans les corps en spirale pendant le fonctionnement, même lorsque les corps en spirale sont exposés à un environnement à grande vitesse et à haute charge pendant une longue période de temps. [Solution] Afin de résoudre le problème, la présente invention utilise une machine à fluide du type à spirales pouvant comprimer ou détendre un fluide dans un espace formé entre une paire de corps en spirale pouvant tourner l'un par rapport à l'autre, la machine à fluide du type à spirales étant caractérisée en ce que : les corps en spirale sont constitués d'aluminium ou d'un alliage d'aluminium ; les surfaces des corps en spirale sont munies d'un film d'oxyde anodique présentant une épaisseur comprise entre 0,3 et 10,0 µm ; et la surface du film d'oxyde anodique est munie d'un film de résine.
PCT/JP2023/019684 2022-06-21 2023-05-26 Machine à fluide du type à spirales WO2023248711A1 (fr)

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JP2022-099468 2022-06-21
JP2022099468A JP2024000654A (ja) 2022-06-21 2022-06-21 スクロール型流体機械

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735057A (ja) * 1993-07-15 1995-02-03 Nippon Soken Inc スクロール型圧縮機
JPH08261169A (ja) * 1995-03-27 1996-10-08 Sakura Keikinzoku Kogyo Kk 摺動部品およびスクロール
JP2001304151A (ja) * 2000-04-25 2001-10-31 Daikin Ind Ltd スクロール圧縮機
CN106014976A (zh) * 2016-05-20 2016-10-12 龙口中宇热管理系统科技有限公司 一种涡旋空压机密封结构、空压机及交通工具
CN113738642A (zh) * 2021-09-06 2021-12-03 珠海格力节能环保制冷技术研究中心有限公司 涡旋盘、涡旋压缩机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735057A (ja) * 1993-07-15 1995-02-03 Nippon Soken Inc スクロール型圧縮機
JPH08261169A (ja) * 1995-03-27 1996-10-08 Sakura Keikinzoku Kogyo Kk 摺動部品およびスクロール
JP2001304151A (ja) * 2000-04-25 2001-10-31 Daikin Ind Ltd スクロール圧縮機
CN106014976A (zh) * 2016-05-20 2016-10-12 龙口中宇热管理系统科技有限公司 一种涡旋空压机密封结构、空压机及交通工具
CN113738642A (zh) * 2021-09-06 2021-12-03 珠海格力节能环保制冷技术研究中心有限公司 涡旋盘、涡旋压缩机

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