A compressor

Abstract

The present invention relates to a compressor, comprising a driving assembly, a main shaft with an eccentric cam, a slide plate with an X-direction and / or Y-direction working surface on the outer edge and an axial hole in the middle, a guide plate with a connecting rod, a roller and a cylinder with a piston; the driving assembly is transmission-connected to the main shaft, the eccentric cam is transmission-connected to the axial hole, the roller is arranged on opposite sides of the guide plate and is contacted and slidably connected with the working surface, and the connecting rod is transmission-connected to the piston; when the driving assembly drives the main shaft to rotate, the eccentric cam drives the slide plate to perform a sinusoidal translation motion, and at the same time the roller reciprocates on the working surface, and then the guide plate drives the piston to perform a piston motion in the cylinder.

Description

Technical Field

[0001] The invention relates to a compressor. Background Art

[0002] In the prior art, compressors are widely used equipment. Compressors are closely related to various fields of modern industry and life, and are general mechanical equipment that plays an important role. Compressors can be used for refrigeration, engines, gas transportation, chemical processes, machinery manufacturing, aquaculture, medical treatment, and almost every place where compressed gas needs to be transported or used. At present, the commonly used air compressors are mainly piston air compressors and screw air compressors. Although these two compressors have their own advantages, they also have certain shortcomings. For example, the piston air compressor mainly uses the rotation of the crankshaft to drive the piston to reciprocate and move linearly to compress the gas in the cylinder. The friction noise of the bearing is large and the stability is poor; the rotor of the screw compressor engages and rubs in the cylinder, the rotation speed is fast, and the heat generation is large. Not only does it require high wear resistance of the material, but also requires a large amount of cooling lubricating oil when in use, and oil and gas separation is also required, which causes the screw compressor to have high energy consumption, high cost, complex operation, and difficulty in repair and maintenance. In order to overcome one or more of the above-mentioned defects, certain innovative improvements have been made to the compressor. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a compressor which is easy to operate, reliable in operation, energy-saving and efficient, does not require oil-gas separation, has low energy consumption, and has an extremely small overall body.

[0004] The object of the present invention is achieved in that:

[0005] A compressor comprises a driving assembly, a main shaft with an eccentric cam, a slide plate with an X-direction and / or Y-direction working surface on the outer edge, a shaft hole in the middle, a guide plate with a connecting rod, a roller and a cylinder with a piston; the driving assembly is connected to the main shaft in a transmission manner, the eccentric cam is connected to the shaft hole in a transmission manner, the roller is arranged on opposite sides of the guide plate and is in contact and sliding connection with the working surface, and the connecting rod is connected to the piston in a transmission manner; when the driving assembly drives the main shaft to rotate, the eccentric cam drives the slide plate to perform a sinusoidal function translation, and at the same time the roller reciprocates on the working surface, thereby causing the guide plate to drive the piston to perform a piston motion in the cylinder.

[0006] The first bearings are arranged at both ends of the main shaft.

[0007] A guide groove is provided in the middle of the guide plate, connecting brackets are provided at both ends of the guide plate in the length direction, and the roller is rotatably mounted on the connecting brackets.

[0008] The main shaft passes through the guide groove, the width of the guide groove is greater than the diameter of the main shaft, the length of the guide groove is greater than twice the eccentricity of the eccentric cam, and the two ends of the guide groove in the length direction form a semicircular arc with a diameter equivalent to the main shaft outer diameter of the main shaft.

[0009] The roller is always in contact and sliding connection with the working surface in the X direction and / or the Y direction.

[0010] The piston is located in the cylinder, and the movement direction of the piston is the same as the working surface in the X direction and / or the Y direction.

[0011] A second bearing is arranged between the eccentric cam and the shaft hole.

[0012] The beneficial effects of the present invention are:

[0013] The present invention adopts the above structure. When the driving component drives the main shaft to rotate, the eccentric cam drives the slide plate to perform sinusoidal translation along the X and Y directions, so that the roller reciprocates on the working surface. Then the guide plate drives the piston to perform piston motion in the cylinder. The piston compresses the gas during the piston motion, and the compression process is efficient and stable.

[0014] The present invention does not need to adopt the crankshaft structure used in the existing compressor technology, so the whole machine is small in size, has better stability, and lower noise; it also does not require the use of inner rotor meshing friction, does not use cooling lubricating oil, and does not require oil-gas separation, so it can effectively improve the stability of the compressor, does not require oil-gas separation, has lower energy consumption, and has a smaller overall machine size.

[0015] The air compression method adopted by the present invention is unique, which can solve the shortcomings of various existing compressors and improve the efficiency of the compressor. The present invention can not only effectively reduce the volume and weight of the compressor, but also realize the miniaturization and portability of the compressor, and at the same time, it is convenient to manufacture, save materials and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an assembly stereogram of the first embodiment of the present invention.

[0017] Figure 2 for Figure 1 sectional view of .

[0018] Figure 3 for Figure 1 The assembly stereogram with the base removed.

[0019] Figure 4 for Figure 3 Front view of . DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] First embodiment

[0022] See also Figure 1-Figure 4 The compressor comprises a base 100, a driving assembly, a main shaft 1 with an eccentric cam 11, a working surface 31 with an X direction and / or a Y direction on the outer edge, a slide plate 3 with an axial hole 32 in the middle, a guide plate 4 with a connecting rod 7, a roller 6 and a cylinder 9 with a piston 8. The driving assembly can be installed outside the base 11, and other components can be installed on the base 11; the driving assembly is connected to the main shaft 1 by transmission, the eccentric cam 11 is connected to the axial hole 32 by transmission, the roller 6 is arranged on the opposite sides of the guide plate 4 and is in contact and sliding connection with the working surface 31, and the connecting rod 7 is connected to the piston 8 by transmission; when the driving assembly drives the main shaft 1 to rotate, the eccentric cam 11 drives the slide plate 3 to perform a sinusoidal translation, and at the same time, the roller 6 reciprocates on the working surface 31. The guide plate 4 then drives the piston to perform a piston motion in the cylinder.

[0023] In this embodiment, the outer edge of the slide plate 3 has working surfaces 31 in the X direction and the Y direction (i.e., working surfaces 31 are provided on all four sides), and the working surfaces 31 in the X direction and the Y direction are respectively connected to two groups of guide plates 4. When the compressor is working, the two groups of guide plates 4 move back and forth in mutually perpendicular directions, and at this time, the slide plate 3 can be alternately guided to ensure the smooth operation of the whole machine. Of course, the outer edge of the slide plate 3 can only be provided with working surfaces 31 in the X direction or the Y direction (i.e., working surfaces 31 are provided on two opposite sides), and at this time, the working surface 31 is only connected to one group of guide plates 4, and the reciprocating motion of the group of guide plates 4 can also be realized.

[0024] In this embodiment, one of the guide plates 4 is arranged in a horizontal direction in the length direction, and the other guide plate 4 is arranged in a vertical direction in the length direction, which can free up more space for setting the cylinder 9. At least one connecting rod 7 is provided on at least one side of the length direction of the guide plate 4, and each connecting rod 7 is connected to the piston 8 and the cylinder 9 in a group transmission; thereby realizing compressors with various cylinder numbers: 1 cylinder, 2 cylinders, 3 cylinders, 4 cylinders, 5 cylinders, 6 cylinders, 7 cylinders, 7 cylinders, 9 cylinders, 10 cylinders, 11 cylinders, or 12 cylinders, etc. In addition, it is generally preferred to set a double array of eccentric cams 11 on the main shaft 1 (the eccentric protrusions of two adjacent eccentric cams 11 are in opposite directions), which can effectively reduce the vibration of the whole machine. In this embodiment, two groups of eccentric cams 11 are provided on the main shaft 1, and a group of slide plates 3 are provided on each group of eccentric cams 11, and two mutually perpendicular guide plates 4 are provided on each group of slide plates 3, and a connecting rod 7 is provided on both sides of each guide plate 4, thereby driving 8 groups of cylinders 9 (i.e. 8 cylinders).

[0025] The driving component can be preferably a common motor, the piston 8 and the cylinder 9 are of conventional structure, the piston 8 can do reciprocating linear motion (i.e. piston motion) in the cylinder 9, and after the motor is started, the driving slide 3 is driven to do sinusoidal translation along the X and Y directions (such as Figure 4As shown), at the same time, the roller 6 reciprocates on the working surface 31, and then the guide plate 4 drives the piston to perform piston motion in the cylinder, so that the working volume formed by the inner wall of the cylinder 9, the cylinder head (not shown in the figure) and the top surface of the piston will undergo periodic changes.

[0026] Specifically, when the piston 8 starts to move from the cylinder head (forward movement), the working volume in the cylinder 9 gradually increases. At this time, the gas pushes the intake valve (not shown) connected to the intake pipe along the intake pipe of the cylinder 9 and enters the cylinder 9 until the working volume reaches the maximum, and the intake valve is closed; when the piston 8 moves in the reverse direction, the working volume in the cylinder 9 decreases, and the gas pressure increases. When the pressure in the cylinder 9 reaches and is slightly higher than the exhaust pressure, the exhaust valve (not shown) connected to the exhaust pipe (not shown) of the cylinder 9 is opened, and the gas is discharged from the cylinder 9 until the piston moves to the limit position, and the exhaust valve is closed. When the piston 8 moves again, the above process is repeated, and the process of intake, compression, and exhaust is realized in the cylinder 9 successively, that is, a compression working cycle is completed.

[0027] The compressor in the prior art uses a crankshaft to transmit all the power of the compressor. The main function of the crankshaft is to change the rotational motion of the motor into the reciprocating linear motion of the piston through the connecting rod. When the crankshaft is in motion, it is subjected to alternating composite loads of tension, compression, shearing, bending and torsion. The working conditions are harsh, and it is required to have sufficient strength and rigidity as well as wear resistance of the main journal and crankpin. Therefore, the crankshaft is generally forged with 40, 45 or 50 high-quality carbon steel, which is relatively expensive.

[0028] The present invention does not use a crankshaft, but uses a simple matching structure of a main shaft 1 with an eccentric cam 11, a slide plate 3, and a guide plate 4. The rotation of the main shaft 1 drives the slide plate 3 to perform a sinusoidal translation along the X and Y directions, thereby driving the guide plate 4, the connecting rod 7, and the piston 8 to reciprocate back and forth. The structure of the present invention is relatively simple, and the connection relationship is reliable. It has positive significance in simplifying components, reducing the volume of the whole machine, reducing product costs, reducing energy consumption due to less energy loss, and improving the reliability of the compressor.

[0029] The connecting rod in the prior art is a connecting piece between the crankshaft and the piston, which converts the rotary motion of the crankshaft into the reciprocating motion of the piston and transmits the power to the piston to do work on the gas. The connecting rod usually includes a connecting rod body, a small end bushing of the connecting rod, a big end bearing and a connecting rod bolt. In this compressor, since the slide plate 3 sequentially drives the guide plate 4, the connecting rod 7 and the piston 8 to reciprocate back and forth, the piston structure in the present invention is more concise, so that the motion trajectory of the guide plate 4, the connecting rod 7 and the piston 8 in the present invention is relatively simple, and the connection structure of the guide plate 4, the connecting rod 7 and the piston 8 is also simpler, which is conducive to reducing product costs and improving the reliability of the compressor.

[0030] Furthermore, bearings 2 are provided at both ends of the main shaft 1 to facilitate its assembly with the base 11, improve the coaxiality, reduce the rotational friction of the main shaft 1, and ensure its rotation accuracy.

[0031] Furthermore, a guide groove 41 is provided in the middle of the guide plate 4, and connecting brackets 5 are provided at both ends of the guide plate 4 in the length direction. The roller 6 is rotatably mounted on the connecting bracket 5. This technical solution enables the guide plate 4 to be made into a flat plate shape, close to the eccentric cam 11 and the slide plate 3, which is conducive to miniaturization.

[0032] Furthermore, the spindle 1 passes through the guide groove 41, the width of the guide groove 41 is greater than the diameter of the spindle 1, the length of the guide groove 41 is greater than twice the eccentricity of the eccentric cam 11, and both ends of the guide groove 41 in the length direction form a semicircular arc with a diameter equivalent to the outer diameter of the spindle 1. This technical solution enables the guide groove 41 to form a corresponding avoidance position, so that the guide plate 4 can smoothly reciprocate back and forth along its length direction.

[0033] Furthermore, the roller 6 is always in contact and sliding connection with the working surface 31 in the X direction and / or the Y direction, so that the guide plate 4 and the bracket 5 can be automatically aligned with respect to the movement of the piston 8 .

[0034] Furthermore, the piston 8 is located in the cylinder 9, and the movement direction of the piston 8 is the same as the working surface 31 in the X direction and / or the Y direction.

[0035] Furthermore, a second bearing 10 is provided between the eccentric cam 11 and the shaft hole 32 to further reduce the friction coefficient during the movement and ensure the rotation accuracy.

[0036] The compressor of the present invention has many advantages over the crankshaft compressor in the prior art, such as large stroke, high efficiency, small size, low noise, no lubricating oil or less lubricating oil. The air compression method adopted by the present invention is unique, which can solve the shortcomings of various existing compressors and improve the efficiency of the compressor. The present invention can not only effectively reduce the size and weight of the compressor, but also realize the miniaturization and portability of the compressor, and at the same time, it is convenient to manufacture, save materials and save costs.

[0037] The above embodiments are only preferred embodiments of the present invention, and the present invention may have other embodiments. Those skilled in the art may also make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope set by the claims of this application.

Claims

1. A compressor, characterized in that: The invention comprises a driving assembly, a main shaft (1) having an eccentric cam (11), a slide plate (3) having an outer edge with an X-direction and / or Y-direction working surface (31), a middle portion with an axial hole (32), a guide plate (4) having a connecting rod (7), a roller (6), and a cylinder (9) having a piston (8); the driving assembly is in driving connection with the main shaft (1), the eccentric cam (11) is in driving connection with the axial hole (32), the roller (6) is arranged on opposite sides of the guide plate (4) and is in contact and sliding connection with the working surface (31), and the connecting rod (7) is in driving connection with the piston (8); when the driving assembly drives the main shaft (1) to rotate, the eccentric cam (11) drives the slide plate (3) to perform a sinusoidal translation, and at the same time the roller (6) reciprocates linearly on the working surface (31), and then causes the guide plate (4) to drive the piston to perform piston movement in the cylinder; a guide groove (41) is provided in the middle of the guide plate (4), and connecting brackets (5) are provided at both ends of the guide plate (4) in the length direction, and the roller (6) is rotatably mounted on the connecting brackets (5); the main shaft (1) penetrates into the guide groove (41), the width of the guide groove (41) is greater than the diameter of the main shaft (1), the length of the guide groove (41) is greater than twice the eccentricity of the eccentric cam (11), and the two ends of the guide groove (41) in the length direction form a semicircular arc with a diameter equivalent to the main shaft outer diameter of the main shaft (1); a second bearing (10) is provided between the eccentric cam (11) and the shaft hole (32).

2. The compressor according to claim 1, characterized in that: First bearings (2) are provided at both ends of the main shaft (1).

3. The compressor according to claim 1, characterized in that: The roller (6) is always in contact and sliding connection with the working surface (31) in the X direction and / or the Y direction.

4. The compressor according to claim 1, characterized in that: The piston (8) is located in the cylinder (9), and the movement direction of the piston (8) is the same as the working surface (31) in the X direction and / or the Y direction.

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