CN113969881A - Motor-free direct-acting oil-free piston type air compressor - Google Patents
Motor-free direct-acting oil-free piston type air compressor Download PDFInfo
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- CN113969881A CN113969881A CN202111414220.5A CN202111414220A CN113969881A CN 113969881 A CN113969881 A CN 113969881A CN 202111414220 A CN202111414220 A CN 202111414220A CN 113969881 A CN113969881 A CN 113969881A
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000010705 motor oil Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 239000003822 epoxy resin Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The invention discloses a motor-free direct-acting oil-free piston type air compressor, which comprises a cylinder body mechanism and a cylinder cover mechanism, wherein the cylinder body mechanism comprises a cylinder body and an electromagnetic piston assembly; the cylinder body is provided with a first one-way valve component; the cylinder cover mechanism is arranged at the end part of the cylinder body and is communicated with the working cavity through a first check valve assembly, and an air outlet is formed in the cylinder cover mechanism; the electromagnetic piston assembly comprises a piston, a piston connecting rod and an electromagnetic power part; the electromagnetic power part drives the piston connecting rod and the piston to move together in the working cavity; the piston is provided with a second one-way valve assembly; the outer wall of the piston is hermetically connected with the inner wall of the working cavity, and the working cavity is divided into a plurality of working sub-cavities by the piston; an air inlet on the cylinder body is communicated with a working cavity; adjacent working subchambers communicate through a second one-way valve assembly. The invention uses magnetic field force as driving force, and has the advantages of simplest structure, low cost, high mechanical efficiency and low noise.
Description
Technical Field
The invention belongs to the technical field of electromagnetism, mechanical manufacturing and fluid and heat dissipation, and particularly relates to a motor-free direct-acting oil-free piston type air compressor.
Background
With the rapid development of science and technology, the demand of all walks of life for clean compressed air energy is more and more popular and higher. And the oil-free piston type air compressor is favored by the market due to simple structure and stable performance. At present, piston type oil-free air compressors which are popular in the market and have relatively mature technology drive connecting rods through the rotating motion of a motor, then drive pistons to reciprocate in cylinders, so that compressed air does work, and the compressed air can be continuously and outwards output under the action of a single-phase valve. Because the rotating motion of the motor is changed into the linear motion process of the piston, the stress of the motor shaft is changed at every moment, the dynamic balance of the motor shaft is a difficult problem which cannot be solved by the conventional piston compressor, and only relative balance can be realized. Therefore, the pressure of the output gas of the prior piston type air compressor cannot be very high, generally about 1.25MPa, the displacement under the rated pressure is in direct proportion to the rotating speed of the motor and the stroke of the piston, and the displacement can not reach 400L/min due to the dynamic balance.
Disclosure of Invention
In view of the above-described deficiencies in the prior art, the present invention provides a motor-free direct-acting type oil-free piston air compressor.
The technical scheme adopted by the invention is as follows:
a motor-free direct-acting oil-free piston type air compressor comprises a cylinder body mechanism and a cylinder cover mechanism, wherein the cylinder body mechanism comprises a cylinder body and an electromagnetic piston assembly, a working cavity is formed in the cylinder body, and the electromagnetic piston assembly is installed in the working cavity and moves in the working cavity; the end part of the cylinder body is provided with a first one-way valve component; the cylinder cover mechanism is arranged at the end part of the cylinder body and communicated with the working cavity through a first check valve assembly, and is provided with an air outlet; the electromagnetic piston assembly comprises a piston, a piston connecting rod and an electromagnetic power part; the piston is connected with the electromagnetic power part through the piston connecting rod, and the electromagnetic power part drives the piston connecting rod and the piston to move together in the working cavity; the piston is provided with a second one-way valve assembly; the outer wall of the piston is hermetically connected with the inner wall of the working cavity, and the working cavity is divided into a plurality of working sub-cavities by the piston; an air inlet on the cylinder body is communicated with a working cavity; adjacent working subchambers communicate through a second one-way valve assembly.
As a preferable scheme of the present invention, the cylinder includes at least one cylindrical magnetic yoke, the magnetic yoke can be used as a channel for magnetic energy and a working chamber for gas compression, and the magnetic yoke can be used as a ferrous metal material to facilitate surface treatment, so that the structure is simplified, and the control and the cost are reduced.
According to the invention, the self-lubricating sealing element is arranged at the contact position of the piston and the inner wall of the cylinder body, and the self-lubricating elasticity of the polytetrafluoroethylene composite material can be used as the sealing element between the piston and the cylinder, so that oil-free operation is realized.
As a preferable scheme of the present invention, the cylinder cover mechanism includes a cylinder cover body, the cylinder cover body is provided with an air outlet, the air outlet is the same as the axis of the piston connecting rod, and an end surface of the cylinder cover body facing the first check valve assembly is provided with an air outlet cavity groove, the air outlet cavity groove is communicated with the air outlet, and the high-pressure gas compressed from the first check valve assembly is discharged from the air outlet through the air outlet cavity groove. The gas outlet is arranged in the axial direction of the cylinder cover body and is consistent with the flowing direction of the compressed gas, so that the impact of the gas on a channel of the gas is reduced, and the noise is reduced.
As a preferable scheme of the present invention, both end portions of the cylinder body are provided with first check valve assemblies; the electromagnetic piston assembly comprises two pistons which are oppositely arranged, namely a piston I and a piston II, the piston I and the piston II are connected together through a piston connecting rod, a working cavity between the piston I and the piston II is a low-pressure cavity, and the low-pressure cavity is communicated with the air inlet; and a working cavity between the piston I and one first one-way valve assembly and a working cavity between the piston I and the other first one-way valve assembly are compression cavities. The double-piston structure can be used for compressing the work period once every time the double-piston structure moves back and forth in the working cavity, namely, the double-piston structure can complete air suction while compressing air and apply work to the compressed air both back and forth, namely, the piston has no idle stroke.
As a preferable scheme of the present invention, the electromagnetic power component includes at least one spiral coil, the spiral coil is installed on the piston rod, the spiral coil generates a magnetic field after being energized, the magnetic fields in the same direction repel each other, and the magnetic fields in different directions attract each other to serve as a driving force, that is, the magnetic field force is directly used as the driving force of the compressor, and the energizing direction of the spiral coil, that is, the direction of the magnetic field generated in the spiral coil, is changed to achieve the left-right movement of the spiral coil, so as to push the piston to compress gas, and the compressed gas can be continuously output by the action of the one-way valve.
As a preferable scheme of the invention, the electromagnetic power part comprises a fixed spiral coil, a moving spiral coil I and a moving spiral coil II, the fixed spiral coil is fixedly connected with the cylinder body, the moving spiral coil I and the moving spiral coil II are respectively arranged at two sides of the fixed spiral coil, the energizing directions of the moving spiral coil I and the moving spiral coil II are opposite, and the energizing directions of the fixed spiral coil and the moving spiral coil I or the moving spiral coil II are the same; and the moving spiral coil I and the moving spiral coil II are both arranged on the piston connecting rod, and the piston connecting rod penetrates through the fixed spiral coil.
The three spiral coils are used for increasing the force effect of the coils, the fixed coils are arranged in the middle, the moving coils are arranged at the two ends, and when current passes through the three coils, the stress of the moving coils can be increased along the same direction. The direction of the current in the coil is changed, namely the direction of the magnetic field generated in the coil is changed, so that the moving coil moves left and right, the piston is pushed to compress gas, and the compressed gas can be continuously output under the action of the one-way valve.
And the fixed spiral coil is a structure that the concentric spiral coil is cast with the magnetic disc by epoxy resin, and two sides of the fixed spiral coil are fixed with the magnetic yoke. A piston rod connecting the two moving helical coils together is capable of reciprocating in the center of the stationary coil.
The structure has the advantages that the conversion efficiency is very high when all electric energy can be converted into mechanical energy.
As a preferable scheme of the present invention, the piston rod includes a first rod, a second rod and a third rod, the first rod is detachably connected to the piston I, the second rod passes through the fixed spiral coil and detachably connects the first rod and the third rod together, and the third rod is detachably connected to the piston II. In order to facilitate assembly and disassembly, the piston connecting rod is arranged into a three-section structure. In addition, the moving coil and the piston form a rigid body, and no connecting rod hinge type relative rotation exists in the process that the coil moves to push the piston to compress gas to do work, so that part of mechanical efficiency loss is saved.
The moving spiral coil of the invention makes linear motion in the magnet yoke, which is completely consistent with the motion trail of the piston, and can reduce the main parts of the compressor in the process of converting electric energy into mechanical energy: the length of the piston is small, so that the structural size of the product is small. Moreover, the directions of the magnetic energy generated in the coil and the compressed gas are on the same axis, the energy is not dispersed to other directions, and the mechanical efficiency is improved. Besides, when the coil drives the piston to compress the gas to do work, the piston does not have any component force in other directions except the axial force, namely the friction force between the piston and the magnet yoke or the cylinder is almost not generated, and the improvement of the mechanical efficiency is facilitated to a certain extent.
The invention also has the following characteristics:
1. the oil-free piston type air compressor has the characteristics that: the components forming the product have simple structures, do not need special processing technology, have mature processing technology, simple manufacture, low production cost, convenient debugging and easy installation. The polytetrafluoroethylene composite material with self-lubricating property is used as a sealing medium, lubricating oil is not needed, and the output gas is oil-free, clean and pollution-free.
2. The cooling mode can be forced air cooling or water cooling, and various selection spaces are provided for users. The cost of forced air cooling is lower than that of water cooling, but the cost performance of water cooling is high to facilitate the absorption of vibration. Different cooling modes can meet the requirements of users in different industries and different fields.
3. The three-coil design utilizes the coil to pass through equidirectional electric current to produce equidirectional magnetic field, when reaching increase magnetic field force, such structure is simplest, not only is favorable to reduce cost, more ensures the improvement of product reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is a comparison diagram of the magnetic force generated by the coil of the present invention in different directions.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example (b):
the utility model provides a no motor direct action type does not have oily piston air compressor, as shown in fig. 1 and 2, includes cylinder body mechanism and cylinder body mechanism, including cylinder body 1 and electromagnetism piston assembly, cylinder body 1 is acted as by two cylindric yokes, for yoke A and yoke B. A first one-way valve assembly is arranged at two end parts of the cylinder body 1; the first check valve component comprises a check valve plate 10, and a check valve I is arranged on the check valve plate 10. And a working cavity 2 is arranged in the cylinder body 1, the cylinder cover mechanism is arranged at the end part of the cylinder body 1 and communicated with the working cavity 2 through a first check valve component, and the cylinder cover mechanism is provided with an air outlet 8. The cylinder cover mechanism in this embodiment comprises an upper cylinder cover mechanism 11 and a lower cylinder cover mechanism 12, the upper cylinder cover mechanism and the lower cylinder cover mechanism are identical in structure and comprise cylinder cover bodies 91, the cylinder cover bodies 91 are provided with gas outlets 8, the gas outlets 8 are identical to the axis of a piston connecting rod, gas outlet cavity grooves are formed in the end faces, facing the first check valve assembly, of the cylinder cover bodies and are communicated with the gas outlets, and high-pressure gas compressed from the first check valve assembly is discharged from the gas outlets through the gas outlet cavity grooves. The gas outlet is arranged in the axial direction of the cylinder cover body and is consistent with the flowing direction of the compressed gas, so that the impact of the gas on a channel of the gas is reduced, and the noise is reduced.
The electromagnetic piston assembly comprises a piston, a piston connecting rod and an electromagnetic power part; the piston is connected with the electromagnetic power part through the piston connecting rod, and the electromagnetic power part drives the piston connecting rod and the piston to move together in the working cavity; the piston is provided with a second one-way valve assembly; the outer wall and the 2 inner wall sealing connection of working chamber of piston to piston and 1 inner wall contact department of cylinder body are equipped with self-lubricating sealing member, and the usable polytetrafluoroethylene combined material's of this embodiment self-lubricating elasticity accomplishes the oil-free operation as the sealing member between piston and the cylinder.
In this embodiment, the electromagnetic piston assembly includes two pistons disposed oppositely, namely a piston I31 and a piston II32, the piston I31 and the piston II32 are connected together by a piston rod, a working chamber between the piston I31 and the piston II32 is a low pressure chamber 7, and the low pressure chamber 7 is communicated with the air inlet 6; the working chamber between piston I32 and one first one-way valve assembly and the working chamber between piston I32 and the other first one-way valve assembly are compression chambers. The compression chamber communicates with the low pressure chamber through a second one-way valve assembly on the corresponding piston.
In order to increase the coil force effect, the electromagnetic power part comprises a fixed spiral coil 51, a moving spiral coil I52 and a moving spiral coil II53, the fixed spiral coil 51 is fixedly connected with the cylinder 1, the moving spiral coil I52 and the moving spiral coil II53 are respectively arranged on two sides of the fixed spiral coil 51, the power directions of the moving spiral coil I52 and the moving spiral coil II53 are opposite, and the power directions of the fixed spiral coil 51 and the moving spiral coil I52 or the moving spiral coil II53 are the same; and the moving spiral coil I52 and the moving spiral coil II53 are both mounted on a piston rod that passes through the stationary spiral coil 51.
The piston connecting rod comprises a first connecting rod 41, a second connecting rod 42 and a third connecting rod 43, the first connecting rod 41 is detachably connected with the piston I31, the second connecting rod 42 penetrates through the fixed spiral coil 51 and detachably connects the first connecting rod 41 and the third connecting rod 43 together, and the third connecting rod 43 is detachably connected with the piston II 32. In order to facilitate assembly and disassembly, the piston connecting rod is arranged into a three-section structure. In addition, the moving coil and the piston form a rigid body, and no connecting rod hinge type relative rotation exists in the process that the coil moves to push the piston to compress gas to do work, so that part of mechanical efficiency loss is saved.
The three spiral coils are used for increasing the force effect of the coils, the fixed coils are arranged in the middle, the moving coils are arranged at the two ends, and when current passes through the three coils, the stress of the moving coils can be increased along the same direction. The direction of the current in the coil, that is, the direction of the magnetic field generated in the coil, is changed, as shown in fig. 3, so as to move the coil left and right, thereby pushing the piston to compress the gas, and the compressed gas can be continuously output by the action of the one-way valve.
And the fixed spiral coil is a structure that the concentric spiral coil is cast with the magnetic disc by epoxy resin, and two sides of the fixed spiral coil are clamped and fixed with the two magnetic yokes. A piston rod connecting the two moving helical coils together is capable of reciprocating in the center of the stationary coil.
The structure has the advantages that the conversion efficiency is very high when all electric energy can be converted into mechanical energy.
In addition, in the embodiment, the air inlet is arranged near the middle coil, although the air inlet is vertical to the moving direction of the piston, the air inlet is low in pressure, the air flow speed, the temperature and the like are not high, and the performances of noise, vibration, temperature rise and the like of a product are not greatly influenced. And the direction of the air outlet is consistent with the moving direction, so that the impact of high-pressure, high-speed and high-temperature air flow on the air flow channel can be effectively avoided, and the air flow device is very favorable for the stable operation of products.
In the conventional oil-free piston compressor, unnecessary mechanical vibration, energy loss and noise increase are caused from the rotational motion of the motor to the linear motion of the piston due to the driving of the motor. Since a force component perpendicular to the axis of the piston inevitably occurs from the rotational motion to the linear motion, and the piston swings in the cylinder, the outer surface of the piston of the conventional oil-free piston compressor must be made of a teflon composite material as a wear-resistant and shock-absorbing material. The bearing-free oil-free piston compressor only needs to make guiding in the centers of the mandrel and the middle coil, the piston only has axial force when stressed, the outer surface of the piston does not need to be subjected to surface treatment, and the product cost can be reduced.
When the piston I and the piston II move and compress towards the upper cylinder cover mechanism 11 together under the action of the magnetic field force of the spiral coil, the one-way valve I corresponding to the cylinder cover body of the upper cylinder cover mechanism is opened, the one-way valve I corresponding to the lower cylinder cover mechanism is closed, the one-way valve II on the piston I31 is closed, the one-way valve on the piston II32 is opened, and low-pressure gas enters a low-pressure cavity from the gas inlet; a high-pressure cavity is formed between the check valve plate 10 and the piston I31 corresponding to the upper cylinder cover mechanism, and gas in the high-pressure cavity is discharged to an air outlet cavity groove of the upper cylinder cover mechanism from the check valve I by the piston I and then discharged from an air outlet; a compression cavity between the piston II and the one-way valve plate 10 corresponding to the lower cylinder mechanism is used as a prepared high-pressure cavity; the low-pressure gas in the low-pressure cavity enters the preparation high-pressure cavity from a check valve II of a piston II 32; after the electrifying directions of the two moving spiral coils are changed, the moving direction of the piston is changed, the one-way valve II on the piston II is closed, and the one-way valve II on the piston I is opened; opening a one-way valve I on a one-way valve plate corresponding to the upper cylinder cover mechanism; closing a one-way valve I on the one-way valve plate corresponding to the lower cylinder cover mechanism; and a compression cavity between the piston I and the one-way valve plate is used as a prepared high-pressure cavity, a compression cavity between the piston II and the one-way valve plate 10 is used as a high-pressure cavity, and compressed high-pressure gas is discharged from a gas outlet of the lower cylinder cover mechanism.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a there is not direct type of motor oil free piston air compressor, includes cylinder body mechanism and cylinder cap mechanism, its characterized in that: the cylinder mechanism comprises a cylinder body (1) and an electromagnetic piston assembly, wherein a working cavity (2) is formed in the cylinder body (1), and the electromagnetic piston assembly is arranged in the working cavity (2) and moves in the working cavity (2); the end part of the cylinder body (1) is provided with a first one-way valve component; the cylinder cover mechanism is arranged at the end part of the cylinder body (1) and is communicated with the working cavity (2) through a first one-way valve assembly, and an air outlet (8) is arranged on the cylinder cover mechanism; the electromagnetic piston assembly comprises a piston, a piston connecting rod and an electromagnetic power part; the piston is connected with the electromagnetic power part through the piston connecting rod, and the electromagnetic power part drives the piston connecting rod and the piston to move together in the working cavity; the piston is provided with a second one-way valve assembly; the outer wall of the piston is hermetically connected with the inner wall of the working cavity (2), and the working cavity (2) is divided into a plurality of working sub-cavities by the piston; an air inlet (6) on the cylinder body (1) is communicated with a working cavity; adjacent working subchambers communicate through a second one-way valve assembly.
2. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 1, wherein: the cylinder (1) comprises at least one cylindrical yoke.
3. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 1, wherein: and a self-lubricating sealing element is arranged at the contact position of the piston and the inner wall of the cylinder body (1).
4. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 1, wherein: the cylinder cover mechanism comprises a cylinder cover body (91), the cylinder cover body (91) is provided with an air outlet (8), and the air outlet (8) is the same as the axis of the piston connecting rod.
5. The motor-free direct-acting oil-free piston type air compressor as claimed in any one of claims 1 to 4, wherein: the two end parts of the cylinder body (1) are respectively provided with a first one-way valve component; the electromagnetic piston assembly comprises two pistons which are oppositely arranged, namely a piston I (31) and a piston II (32), the piston I (31) and the piston II (32) are connected together through a piston connecting rod, a working cavity between the piston I (31) and the piston II (32) is a low-pressure cavity (7), and the low-pressure cavity (7) is communicated with the air inlet (6); the working cavity between the piston I (32) and one first one-way valve component and the working cavity between the piston I (32) and the other first one-way valve component are compression cavities.
6. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 5, wherein: the electromagnetic power part comprises at least one spiral coil, and the spiral coil is installed on the piston connecting rod.
7. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 6, wherein: the electromagnetic power part comprises a fixed spiral coil (51), a moving spiral coil I (52) and a moving spiral coil II (53), the fixed spiral coil (51) is fixedly connected with the cylinder body (1), the moving spiral coil I (52) and the moving spiral coil II (53) are respectively arranged on two sides of the fixed spiral coil (51), the energizing directions of the moving spiral coil I (52) and the moving spiral coil II (53) are opposite, and the energizing directions of the fixed spiral coil (51) and the moving spiral coil I (52) or the moving spiral coil II (53) are the same; and the moving spiral coil I (52) and the moving spiral coil II (53) are both arranged on a piston connecting rod, and the piston connecting rod penetrates through the fixed spiral coil (51).
8. The motor-free direct-acting oil-free piston type air compressor as claimed in claim 7, wherein: the piston connecting rod comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43), the first connecting rod (41) is detachably connected with the piston I (31), the second connecting rod (42) penetrates through the fixed spiral coil (51) and detachably connects the first connecting rod (41) and the third connecting rod (43), and the third connecting rod (43) is detachably connected with the piston II (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414220.5A CN113969881A (en) | 2021-11-25 | 2021-11-25 | Motor-free direct-acting oil-free piston type air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414220.5A CN113969881A (en) | 2021-11-25 | 2021-11-25 | Motor-free direct-acting oil-free piston type air compressor |
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| CN113969881A true CN113969881A (en) | 2022-01-25 |
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| CN202111414220.5A Pending CN113969881A (en) | 2021-11-25 | 2021-11-25 | Motor-free direct-acting oil-free piston type air compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115013284A (en) * | 2022-01-29 | 2022-09-06 | 北京顿超科技有限公司 | Electromagnetic control device |
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