Carbon fiber reinforced resin-based composite material and preparation method thereof, compressor pump body structural member and rolling rotor type compressor

Abstract

The invention relates to the technical field of compressors, in particular to a carbon fiber reinforced resin-based composite material, a preparation method of the carbon fiber reinforced resin-based composite material, a compressor pump body structural part and a rolling rotor type compressor. The carbon fiber reinforced resin-based composite material comprises a plurality of stacked unidirectional carbon fiber layers, fibers in the unidirectional carbon fiber layers are carbon-based fibers arranged in the same direction, and the extending directions of the carbon-based fibers in every two adjacent unidirectional carbon fiber layers are parallel or orthogonal. And the laminated unidirectional carbon fiber layers are cured and molded through a resin-based polymer. The composite material has extremely low density which is only 20% or even lower than that of cast iron, high-speed steel and other materials, the weight of the pump body of the rolling rotor compressor prepared from the carbon fiber reinforced resin matrix composite material can be reduced by 80%, the weight of the whole machine is reduced, the transportation cost is reduced, meanwhile, the mass of a roller can be effectively reduced, and the service life of the roller is prolonged. And work consumption of autorotation is reduced, mechanical noise of the compressor is reduced, and comfort of an air conditioning system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and more particularly, to a carbon fiber reinforced resin matrix composite material and a preparation method thereof, a compressor pump body structural member, and a rolling piston compressor. Background Art

[0002] The power consumption of a rolling piston compressor mainly includes theoretical isentropic compression power, motor power consumption, mechanical loss power, and indicated power, where the indicated power includes leakage loss, suction and discharge pressure loss, suction superheat loss, etc. Leakage has a crucial impact on the energy efficiency of the compressor. The leakage paths of a rolling piston compressor are as follows: the gas in the compression chamber leaks to the suction chamber through the clearance between the roller and the cylinder tangent point and the clearance between the sliding vane and the rotor contact point; the high-pressure chamber gas leaks to the low-pressure chamber through the clearance at both ends of the roller; the high-pressure chamber gas leaks to the low-pressure chamber through the clearance at both ends of the sliding vane. How to reduce leakage is an important way to improve the efficiency of the current compressor. In addition, during the high-speed operation of the rolling piston compressor, the roller is always in the high and low temperature cross region, resulting in unstable deformation of the roller. How to reduce the deformation of the roller during operation is also a technical problem. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a carbon fiber reinforced resin matrix composite material and a preparation method thereof, a compressor pump body structural member, and a rolling piston compressor.

[0004] In order to achieve the above object, according to the first aspect of the present technical solution, the present technical solution provides a carbon fiber reinforced resin matrix composite material, which includes a plurality of layers of stacked unidirectional carbon fiber layers. The fibers in the unidirectional carbon fiber layer are carbon-based fibers arranged in the same direction. The extending directions of the carbon-based fibers in adjacent two layers of the unidirectional carbon fiber layers are parallel or orthogonal, and the stacked unidirectional carbon fiber layers are cured and formed by a resin matrix polymer.

[0005] Further, in the carbon fiber reinforced resin matrix composite material, the carbon content of the carbon-based fiber is more than 99%.

[0006] Further, in the carbon fiber reinforced resin matrix composite material, the material of the resin matrix polymer is an epoxy resin matrix polymer.

[0007] Further, in the carbon fiber reinforced resin matrix composite material, the mass ratio of the epoxy resin matrix polymer to the carbon-based fiber is 2-4.

[0008] Further, in the carbon fiber reinforced resin matrix composite material, the epoxy resin-based polymer comprises the following raw material components in parts by weight: 100 parts of epoxy resin, 9-10 parts of curing agent, 0.05-0.08 parts of anti-foaming agent, 0.03-0.05 parts of dispersant, and 0.03-0.05 parts of coupling agent.

[0009] To achieve the above object, according to the second aspect of the present technical solution, the present technical solution provides a preparation method of a carbon fiber reinforced resin matrix composite material, which comprises:

[0010] Preparing a fiber structure from raw materials through a spinning process, and obtaining the carbon-based fiber after pre-oxidation treatment, high-temperature carbonization treatment, and graphitization treatment in sequence;

[0011] Processing the carbon-based fiber into a unidirectional carbon fiber layer with a thickness of 0.1-0.3 mm;

[0012] Uniformly coating the surface of the unidirectional carbon fiber layer with a resin-based polymer, and then stacking and curing layer by layer to form a mold.

[0013] Further, the raw material is polyacrylonitrile.

[0014] To achieve the above object, according to the third aspect of the present technical solution, the present technical solution provides a compressor pump body structural member, which is made of the fiber reinforced resin matrix composite material provided in the first aspect of the present application.

[0015] Further, the compressor pump body structural member is a roller, a sliding vane, or a cylinder.

[0016] To achieve the above object, according to the fourth aspect of the present technical solution, the present technical solution provides a rolling rotor compressor, and at least one of the roller, the sliding vane, and the cylinder in the rolling rotor compressor is the compressor pump body structural member provided in the third aspect of the present technical solution.

[0017] The carbon fiber reinforced resin matrix composite material provided by the embodiment of the present application has an extremely low density, only 20% or even lower than the density of materials such as cast iron and high-speed steel. When the pump body is running, the crankshaft drives the roller to move at a high speed. When the mass of the roller is large, the useless work consumed by its self-rotation will be greater, the moment of inertia will increase, and the absolute value of the angular velocity of the roller's self-rotation will decrease, resulting in an increase in the absolute value of the relative sliding speed between the roller and the sliding vane, and the friction will become more intense. Using the pump body of the rolling rotor compressor prepared from the carbon fiber reinforced resin matrix composite material of the present invention, the weight of the pump body can be reduced by about 80%, reducing the weight of the whole machine, reducing the transportation cost, effectively reducing the mass of the roller, reducing the work consumption of its self-rotation, reducing the mechanical noise of the compressor, and improving the comfort of the air-conditioning system. Description of the Drawings

[0018] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more apparent. The schematic embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0019] Figure 1 is a longitudinal sectional structural schematic diagram of the pump body structure of a rolling rotor compressor provided by an embodiment of this application;

[0020] Figure 2 is a transverse sectional structural schematic diagram of the pump body structure of a rolling rotor compressor provided by an embodiment of this application;

[0021] Figure 3 is a transverse sectional view of the cylinder in the pump body structure of a rolling rotor compressor provided by Embodiment 6 of this application.

[0022] In the figure:

[0023] 1. Cylinder;

[0024] 101. High-temperature area;

[0025] 102. Low-temperature area;

[0026] 2. Roller;

[0027] 3. Sliding vane;

[0028] 4. Upper flange;

[0029] 5. Lower flange;

[0030] 6. Crankshaft;

[0031] 7. Sliding vane groove;

[0032] 8. Spring;

[0033] 9. High-pressure chamber;

[0034] 10. Low-pressure chamber. Detailed implementation manners

[0035] The present invention discloses a carbon fiber reinforced resin matrix composite material, a compressor pump body structural member, and their preparation methods. Those skilled in the art can draw on the content of this article and appropriately modify some materials or process parameters to achieve. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art, and they are all regarded as included in the present invention. The products, processes, and applications of the present invention have been described through preferred embodiments. Relevant personnel can obviously make changes or appropriate changes and combinations to the products, processes, and applications described herein without departing from the content, spirit, and scope of the present invention to implement and apply the technology of the present invention. Obviously, the described embodiments are part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] It should be noted that in this article, relational terms such as "first" and "second", "step 1" and "step 2", and "(1)" and "(2)" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0037] Hereinafter, the suitable embodiments of the present invention will be described in detail.

[0038] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0039] The carbon fiber reinforced resin matrix composite material and its preparation method in the embodiments of this application are described in detail below. The carbon fiber reinforced resin matrix composite material in this application is applied to a compressor and can be specifically constructed as structural members such as cylinders, sliders, and rollers of a rolling rotor compressor that are vulnerable to high temperature or wear in the compressor.

[0040] The carbon fiber reinforced resin matrix composite according to the embodiment of the present application includes a plurality of unidirectional carbon fiber layers stacked, the fibers in the unidirectional carbon fiber layer are carbon-based fibers arranged in the same direction, the extending directions of the carbon-based fibers in adjacent two unidirectional carbon fiber layers are parallel or orthogonal, and the stacked unidirectional carbon fiber layers are cured and formed by a resin matrix polymer.

[0041] In the carbon fiber reinforced resin matrix composite in the embodiment of the present application, the carbon content of the carbon-based fiber is above 99%, which endows it with properties such as high temperature resistance, anti-friction, heat conduction and corrosion resistance. The obtained carbon-based fiber forms a graphite microcrystalline structure with preferred orientation along the fiber axis, so that it has high strength and modulus along the axial direction of the carbon-based fiber. And the carbon-based fiber has a small density, so that its specific strength and specific modulus are both relatively high, and it can be used as a reinforcing material. After the unidirectional carbon fiber layers are stacked and hot-pressed, the resin matrix polymer is used to realize the molding of the laminated structure.

[0042] In some embodiments, the material of the resin matrix polymer is an epoxy resin matrix polymer, and the mass ratio of the epoxy resin matrix polymer to the carbon-based fiber is 2-4. The epoxy resin matrix polymer may include the following raw material components in parts by weight: 100 parts of epoxy resin, 9-10 parts of curing agent, 0.05-0.08 parts of anti-foaming agent, 0.03-0.05 parts of dispersant and 0.03-0.05 parts of coupling agent. The curing agent includes, but is not limited to, triethylenetetramine (TETA); the anti-foaming agent may be an organosilicon compound, such as silicone oil and silicone resin; the dispersant is preferably polyamide; the coupling agent is preferably a silane coupling agent.

[0043] The preparation method of the carbon fiber reinforced resin matrix composite in the embodiment of the present application mainly includes the following steps.

[0044] Step 1: Preparation of carbon-based fiber.

[0045] The raw material is made into a fiber structure through a spinning process, and after being subjected to pre-oxidation treatment, high-temperature carbonization treatment and graphitization treatment in sequence, the carbon-based fiber is obtained.

[0046] The raw material is preferably a polyacrylonitrile (PAN) solution. Through a spinning process, a fiber structure is formed, and then through pre-oxidation treatment, the nitrile group (-C≡N) part in the polyacrylonitrile fiber structure is converted into a carboxyl group (-COOH) and a ketone group (C=O) to increase the carbon content of the polyacrylonitrile fiber structure to about 50%-60%.

[0047] High-temperature carbonization treatment is usually divided into two stages. In the first stage, the pre-oxidized fiber structure is carbonized at a temperature of 500-700°C to remove most of the non-carbon elements, and then enters the second stage, where it is continuously carbonized at a high temperature of 700-1000°C to further remove the remaining non-carbon elements in the fiber structure. After high-temperature carbonization treatment, the carbon content in the limiting structure reaches 80%-90%.

[0048] Finally, the fiber structure is graphitized. The carbon atoms in the fiber structure are rearranged at a high temperature of 2000-3000°C to form a more ordered graphite structure, and finally the carbon content in the fiber structure is above 99% to obtain carbon-based fibers.

[0049] Step two: Process the carbon-based fibers into a unidirectional carbon fiber layer with a thickness of 0.1-0.3 mm. In this step, a constant-tension unwinding yarn bobbin can be used to separate and arrange the carbon-based fibers, so that the carbon-based fibers are evenly arranged in the same direction, and a certain tension and pressure can be applied to the neatly arranged carbon-based fibers to form a sheet-like unidirectional carbon fiber layer.

[0050] Step three: Uniformly coat the surface of the unidirectional carbon fiber layer with a resin-based polymer, and then stack and cure layer by layer.

[0051] First, use a high-precision cutting device (such as a laser cutting machine or an ultrasonic cutting machine) to cut the unidirectional carbon fiber layer into the required shape and size, ensure that the edges are neat, and trim the cut unidirectional carbon fiber layer to remove burrs and irregular edges to ensure the flatness and smoothness of each layer.

[0052] Uniformly coat the surface of each unidirectional carbon fiber layer with a resin-based polymer to ensure good adhesion. Stack the unidirectional carbon fiber layers coated with the resin-based polymer layer by layer, and use a fixture or a vacuum bag to fix each layer to prevent movement.

[0053] Apply a pressure of 5 bar during the stacking process to ensure close contact and adhesion between layers. Put the stacked laminated structure into an oven and keep it at 80°C for 2 hours for curing. After curing is completed, slowly cool it and take out the cured structure from the mold to ensure that the surface and internal structure are not damaged.

[0054] Grind or polish the surface of the structure to remove uneven parts and improve the surface quality.

[0055] The carbon fiber reinforced resin matrix composite material can be made into pump body structural parts such as the cylinder, sliding vane and roller of a rolling rotor compressor. The above pump body structural parts include several laminated carbon fiber reinforced resin matrix composite materials, and the extension directions of the carbon-based fibers in adjacent two unidirectional carbon fiber layers are parallel or orthogonal.

[0056] Specifically, as shown in Figure 1 and 2 The pump body of the rolling rotor compressor includes a cylinder 1, a roller 3, a sliding vane 3, an upper flange 4 and a lower flange 5. The working principle of the rolling rotor compressor is that the cylindrical roller 3 is arranged in the cylindrical cylinder 1. The roller 3 rotates under the drive of the motor by relying on the eccentric part of the crankshaft 6 sleeved therein. A slidable sliding vane 3 is placed in the sliding vane groove 7 of the cylinder 1. One end of the sliding vane 3 is installed with a spring 8 to ensure that one end of the sliding vane 3 is always in contact with the outer circle of the roller 2, and to ensure that the sliding vane 3 makes a reciprocating motion in the sliding vane groove 7. The sliding vane 3, the inner surface of the cylinder 1, the outer surface of the roller 2, and the upper flange 4 and the lower flange 5 at both ends of the cylinder 1 form a high-pressure chamber 9 on the exhaust side and a low-pressure chamber 10 on the suction side. The crankshaft 6 drives the roller 2 to rotate one week, then sucks air from the low-pressure chamber 10 and discharges air from the high-pressure chamber 9 to complete a working cycle, and the above process is continuously repeated.

[0057] The carbon fiber reinforced resin matrix composite material provided by the embodiment of the present application has an extremely low coefficient of thermal expansion. Especially in the extending direction of the carbon fiber, the coefficient of thermal expansion of the composite material is close to 0. Although the coefficient of thermal expansion in the direction perpendicular to the extending direction of the carbon fiber increases relative to the extending direction of the carbon fiber, it is still extremely low compared with common materials such as cast iron and high-speed steel.

[0058] For the pump body of the rolling rotor compressor prepared by using the carbon fiber reinforced resin matrix composite material of the present invention, the coefficients of thermal expansion of the various parts of the pump body tend to 0, that is, the volume change of the pump body caused by temperature change is extremely small, which can solve the deformation problem of the roller during operation and better adapt to high-speed operation. In addition, it can also solve the problem of large leakage of the existing pump body. In the related art, there is friction between the lower end face of the rolling rotor and the lower flange end face, the upper end face of the rolling rotor and the upper flange end face, the outer circle of the rolling rotor and the head of the sliding vane, the outer circle of the rolling rotor and the inner circle of the cylinder, etc. This friction process causes the temperature to rise, causing the rolling rotor and the sliding vane to expand due to heat, and further deteriorating the wear, forming a vicious cycle. The general solution in the industry is to set a height gap between the roller and the cylinder and between the sliding vane and the cylinder. However, the increase of the height gap will inevitably lead to an increase in the leakage from the high-pressure area to the low-pressure area, and this method is at the cost of performance attenuation. For the pump body of the rolling rotor compressor prepared by using the carbon fiber reinforced resin matrix composite material of the present invention, the coefficients of thermal expansion of the various parts of the pump body tend to 0, and the height assembly gap between the roller and the cylinder and the height assembly gap between the sliding vane and the cylinder in the compressor can both infinitely tend to 0, reducing the leakage during the operation of the compressor, helping to improve the refrigerating capacity of the compressor, and thus improving the energy efficiency.

[0059] The carbon fiber reinforced resin matrix composite material provided by the embodiments of the present application has an extremely low density, only 20% or even lower than the density of materials such as cast iron and high-speed steel. When the pump body is running, the crankshaft drives the roller to move at a high speed. When the mass of the roller is relatively large, the useless work consumed by its self-rotation will be greater, the moment of inertia will increase accordingly, and the absolute value of the angular velocity of the roller's self-rotation will decrease, resulting in an increase in the absolute value of the relative sliding speed between the roller and the sliding vane, and the friction will become more intense. Using the pump body of a rolling rotor compressor prepared from the carbon fiber reinforced resin matrix composite material of the present invention, the weight of the pump body can be reduced by about 80%, reducing the weight of the whole machine. While reducing the transportation cost, it can also effectively reduce the mass of the roller, reduce the work consumption of its self-rotation, reduce the mechanical noise of the compressor, and improve the comfort of the air-conditioning system.

[0060] Example 1:

[0061] A carbon fiber reinforced resin matrix composite material is prepared by the following method.

[0062] The raw materials are made into a fiber structure through a spinning process, and the fiber structure is subjected to pre-oxidation treatment, and then high-temperature carbonization treatment is carried out in two stages at 600 °C and 850 °C respectively. Finally, the fiber structure is graphitized at 2500 °C to obtain carbon-based fibers.

[0063] The carbon-based fibers are wound on a constant-tension unwinding bobbin, and are separated and arranged to make the carbon-based fibers uniformly arranged in the same direction, forming a unidirectional carbon fiber layer with a sheet structure, and controlling the thickness of each layer of unidirectional carbon fiber layer to be about 0.2 mm.

[0064] A resin-based polymer is uniformly coated on the surface of each layer of unidirectional carbon fiber layer. The mass ratio of the resin-based polymer to the carbon-based fiber is 3:1. The resin-based polymer may include 100 parts by mass of epoxy resin, 9 parts by mass of TETA, 0.07 parts by mass of silicone oil, 0.04 parts by mass of polyamide, and 0.04 parts by mass of silane coupling agent. The unidirectional carbon fiber layers coated with the resin-based polymer are stacked layer by layer. The extending directions of the carbon-based fibers in adjacent two layers of unidirectional carbon fiber layers are kept parallel or substantially parallel. Each layer is fixed by a clamp or a vacuum bag to prevent movement. During the stacking process, a pressure of 5 bar is applied to ensure close contact and adhesion between layers. The stacked laminated structure is placed in an oven and cured at 80 °C for 2 h. After curing is completed, it is slowly cooled to obtain the carbon fiber reinforced resin matrix composite material.

[0065] After testing, the density of the carbon fiber reinforced resin matrix composite material prepared in this example is 1.68 g / cm 3 ; in the range of -40 °C to 120 °C, the coefficient of thermal expansion in the extending direction of the carbon fiber is not higher than 5.36×10 -6 / °C, the coefficient of thermal expansion parallel to the unidirectional carbon fiber layer and perpendicular to the carbon fiber extension direction is not higher than 13.13×10 -5 / °C, the coefficient of thermal expansion in the stacking direction of the unidirectional carbon fiber layer is not higher than 9.82×10 -6 / °C, and the coefficient of thermal expansion in all directions of the composite material shows a gradually increasing trend with the increase of temperature.

[0066] Example 2

[0067] A carbon fiber reinforced resin matrix composite material, which is different from that in Example 1 in that: the unidirectional carbon fiber layers coated with resin-based polymers are stacked layer by layer, and the extension directions of the carbon-based fibers in adjacent two unidirectional carbon fiber layers are perpendicular or approximately perpendicular.

[0068] The density of the carbon fiber reinforced resin matrix composite material prepared in this example is 1.67 g / cm 3 ; in the range of -40°C to 120°C, in the plane parallel to the unidirectional carbon fiber layer, the coefficients of thermal expansion in the carbon fiber extension direction and the direction perpendicular to the carbon fiber extension are equivalent, both not higher than 6.71×10 -6 / °C, the coefficient of thermal expansion in the stacking direction of the unidirectional carbon fiber layer is not higher than 11.97×10 -6 / °C, and the coefficient of thermal expansion in all directions of the composite material shows a gradually increasing trend with the increase of temperature.

[0069] Example 3

[0070] The sliding vane, roller and cylinder of the rolling rotor compressor pump body structure are all machined from the carbon fiber reinforced resin matrix composite material provided in Example 2 of the present application. The extension directions of the carbon-based fibers in adjacent two unidirectional carbon fiber layers are perpendicular or substantially perpendicular. The extension directions of half of the carbon-based fibers in the sliding vane, roller and cylinder are approximately parallel to the height direction of the cylinder. After testing, the sliding vane / cylinder height clearance and the roller / cylinder height clearance in this example can be optimized to 5 μm to 10 μm. The rolling rotor compressor pump body structure is assembled with an installation height clearance of 6 μm, and the refrigerating capacity, power consumption, energy efficiency ratio, sound power level and vibration parameters of the compressor are recorded in Table 1.

[0071] Example 4

[0072] The sliding vane, roller, and cylinder of the scroll rotor compressor pump body structure are all machined from the carbon fiber reinforced resin matrix composite material provided in Embodiment 1 of the present application. The extending directions of the carbon-based fibers in adjacent two layers of unidirectional carbon fiber layers are kept parallel or substantially parallel, and the extending directions of the carbon-based fibers in the sliding vane, roller, and cylinder are all parallel or approximately parallel to the height direction of the cylinder. Through testing, the height clearance between the sliding vane and the cylinder and the height clearance between the roller and the cylinder in this embodiment can be optimized to 1 μm to 5 μm. The scroll rotor compressor pump body structure is assembled with an installation height clearance of 2 μm, and the refrigerating capacity, power consumption, energy efficiency ratio, sound power level, and vibration parameters of the compressor are measured and recorded in Table 1.

[0073] Embodiment 5

[0074] The cylinder of the scroll rotor compressor pump body structure is machined from the carbon fiber reinforced resin matrix composite material provided in Embodiment 1 of the present application. The extending directions of the carbon-based fibers in adjacent two layers of unidirectional carbon fiber layers are kept parallel or substantially parallel, and the extending direction of the carbon-based fibers in the cylinder is approximately parallel to the height direction of the cylinder. The material of the sliding vane is high-speed steel, and the material of the roller is alloy cast iron. Through testing, the height clearance between the sliding vane and the cylinder and the height clearance between the roller and the cylinder in this embodiment can be optimized to 11 μm to 15 μm. The scroll rotor compressor pump body structure is assembled with an installation height clearance of 12 μm, and the refrigerating capacity, power consumption, energy efficiency ratio, sound power level, and vibration parameters of the compressor are measured and recorded in Table 1.

[0075] Embodiment 6

[0076] As Figure 3 shown, the structure of the cylinder is divided into a low-temperature area 102 corresponding to the low-pressure chamber on the suction side and a high-temperature area 101 corresponding to the high-pressure chamber on the discharge side. The sliding vane, roller, and the low-temperature area 102 of the cylinder of the scroll rotor compressor pump body structure are all machined from the carbon fiber reinforced resin matrix composite material provided in Embodiment 1 of the present application. The extending directions of the carbon-based fibers in adjacent two layers of unidirectional carbon fiber layers are kept parallel or substantially parallel, and the extending direction of the carbon-based fibers in the sliding vane, roller, and the low-temperature area 102 of the cylinder is approximately parallel to the height direction of the cylinder. Among them, the high-temperature area 101 of the cylinder is machined from the carbon fiber reinforced resin matrix composite material provided in Embodiment 2 of the present application. The extending directions of the carbon-based fibers in adjacent two layers of unidirectional carbon fiber layers are kept perpendicular or substantially perpendicular, and the extending direction of half of the carbon-based fibers in the high-temperature area 101 of the cylinder is approximately parallel to the height direction of the cylinder. After the low-temperature area 102 and the high-temperature area 101 of the cylinder are respectively machined, the two parts are butt-jointed and then bonded and cured together with resin. Through testing, the height clearance between the sliding vane and the cylinder and the height clearance between the roller and the cylinder in this embodiment can be optimized to 1 μm to 5 μm. The scroll rotor compressor pump body structure is assembled with an installation height clearance of 1 μm, and the refrigerating capacity, power consumption, energy efficiency ratio, sound power level, and vibration parameters of the compressor are measured and recorded in Table 1.

[0077] Comparative example:

[0078] The cylinder of the scroll rotor compressor pump body structure is made of gray cast iron, the sliding vane is made of high-speed steel, and the roller is made of alloy cast iron. The height clearance between the sliding vane and the cylinder and the height clearance between the roller and the cylinder are between 13 μm and 17 μm. The scroll rotor compressor pump body structure is assembled with a mounting height clearance of 13 μm, and the refrigerating capacity, power consumption, energy efficiency ratio, sound power level, and vibration parameters of the compressor are measured and recorded in Table 1.

[0079] The performance data comparison of the compressors in each embodiment and the comparative example is shown in Appendix Table 1

[0080] Appendix Table 1

[0081]

[0082] As can be seen from Table 1, after using the pump body structure parts processed from the carbon fiber reinforced resin matrix composite material of Embodiment 1 or 2 of the present invention, the characteristics of low density and low thermal expansion coefficient of the composite material can be fully utilized to improve the refrigerating capacity and energy efficiency ratio of the scroll rotor compressor to varying degrees, reduce power consumption, increase the power level and vibration.

[0083] During the working process, the working temperature of the low-temperature region 102 on the suction side of the cylinder of the scroll rotor compressor pump body structure is significantly lower than the working temperature of the high-temperature region 101 on the exhaust side. When the same material is selected, the thermal deformation amounts of the low-temperature region 102 and the high-temperature region 101 at the same time are not the same, and the thermal deformation difference between the two sides will also cause an increasing trend in the height clearance between the sliding vane and the cylinder and the height clearance between the roller and the cylinder during the working process, thereby increasing the leakage amount at the height clearance. Based on this, in Embodiment 6, composite materials with different arrangement directions of unidirectional carbon fiber layers are used in the low-temperature region 102 and the high-temperature region 101. The composite material with a relatively high thermal expansion coefficient in the height direction is used in the low-temperature region 102, and the composite material with a relatively low thermal expansion coefficient in the height direction is used in the high-temperature region 101. Since the thermal expansion coefficient of the composite material of the present application in different directions has a tendency to increase with the increase of temperature, when the working temperature of the low-temperature region 102 on the suction side of the cylinder is lower than the working temperature of the high-temperature region 101 on the exhaust side, the thermal expansion coefficients of the two present a certain degree, and finally the thermal deformation amounts of the low-temperature region 102 and the high-temperature region 101 in the height direction are kept highly synchronous, thereby reducing the leakage during the operation of the compressor caused by the too large difference in the deformation amounts on both sides, helping to improve the refrigerating capacity of the compressor, and thus improving the energy efficiency.

[0084] In this specification, some embodiments are described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0085] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A carbon fiber reinforced resin matrix composite material, characterized in that It includes a plurality of unidirectional carbon fiber layers arranged in a stacked manner. The fibers in the unidirectional carbon fiber layer are carbon-based fibers arranged in the same direction. The extending directions of the carbon-based fibers in adjacent two unidirectional carbon fiber layers are parallel or orthogonal. The stacked unidirectional carbon fiber layers are cured and formed by a resin-based polymer.

2. The carbon fiber reinforced resin matrix composite material according to claim 1, wherein The carbon content of the carbon-based fiber is above 99%.

3. The carbon fiber reinforced resin matrix composite material according to claim 1, wherein The material of the resin-based polymer is an epoxy resin-based polymer.

4. The carbon fiber reinforced resin matrix composite material according to claim 3, characterized in that, The mass ratio of the epoxy resin-based polymer to the carbon-based fiber is 2 - 4.

5. The carbon fiber reinforced resin matrix composite material according to claim 3, wherein The epoxy resin-based polymer includes the following raw material components in parts by weight: 100 parts of epoxy resin, 9 - 10 parts of curing agent, 0.05 - 0.08 parts of antifoaming agent, 0.03 - 0.05 parts of dispersant, and 0.03 - 0.05 parts of coupling agent.

6. The preparation method of the carbon fiber reinforced resin matrix composite material according to any one of claims 1-5, characterized in that, It includes: The raw materials are made into a fiber structure through a spinning process, and after being subjected to pre-oxidation treatment, high-temperature carbonization treatment, and graphitization treatment in sequence, the carbon-based fiber is obtained; The carbon-based fiber is processed into a unidirectional carbon fiber layer with a thickness of 0.1 - 0.3 mm; The surface of the unidirectional carbon fiber layer is evenly coated with a resin-based polymer, and then stacked layer by layer and cured and formed.

7. The preparation method according to claim 6, wherein The raw material is polyacrylonitrile.

8. A compressor pump body structural member, characterized in that, It is made of the fiber-reinforced resin-based composite material according to any one of claims 1 - 5.

9. The compressor pump body structural member according to claim 8, wherein, The compressor pump body structural part is a roller, a sliding vane, or a cylinder.

10. A rolling rotor type compressor, characterized in that, At least one of the roller, the sliding vane, and the cylinder in the rolling rotor compressor is the compressor pump body structural part according to claim 8.

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