CN109973361A - The closed crankcase oil-free air compressor of dual-cooled and its cooling means - Google Patents
The closed crankcase oil-free air compressor of dual-cooled and its cooling means Download PDFInfo
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- CN109973361A CN109973361A CN201910251211.5A CN201910251211A CN109973361A CN 109973361 A CN109973361 A CN 109973361A CN 201910251211 A CN201910251211 A CN 201910251211A CN 109973361 A CN109973361 A CN 109973361A
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- crankcase
- cooling
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- air
- cylinder
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Classifications
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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
- F04B39/06—Cooling; Heating; Prevention of freezing
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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
-
- 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
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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
- F04B39/16—Filtration; Moisture separation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The present invention relates to a kind of closed crankcase oil-free air compressors of dual-cooled, including crankcase, valve plate, cylinder cap, piston rod part, driving motor, fan cover assembly, centrifugal fan；The valve plate is set at the top of the crankcase, and the cylinder cap is set to the valve plate top；The fan cover assembly and the centrifugal fan constitute external cooling, and the piston rod part, crankcase collectively form internal cooling.The present invention also provides a kind of cooling means of the closed crankcase oil-free air compressor of dual-cooled, including step 1, outside is cooling；Step 2, inside are cooling.The present invention is able to solve existing open oil-free air compressor easily causes piston and cylinder to lead to the problem of the working life and stability for pulling, reducing compressor because of the entrance of the impurity such as extraneous dust granule, and it is cooling that inside and outside dual is arranged, the operating temperature of effective control oil-free air compressor, ensures the safe and stable operation of air compressor.
Description
Technical field
The present invention relates to air compressor technical fields, and in particular to a kind of closed crankcase oil-free air of dual-cooled
Compressor and its cooling means.
Background technique
Air compressor is one kind to compressed gas, provides the equipment of gas source power, and the dynamic mechanical energy of original is converted into
Air at runtime, can be compressed in air accumulator by the device of gas pressure energy, air compressor.It is same to have oil lubricating compressor phase
Than, oilless (oil free) compressor due to the cooling and lubrication of not no lubricating oil, piston ring is in high temperature, high pressure, top load, oil-free lubrication
Bad working environments, the rate of wear quickly, influence the service life and reliability of operation of air compressor machine.In order to reduce piston during exercise
The high-temperature of generation, at this stage, oil-free air compressor are usually that open crankcase structure is still opened by the way of
The crankcase structure for putting formula can cause piston to pull, wear with cylinder generation because of the entrance of the impurity such as extraneous dust granule, drop
The working life of low compressor, increases maintenance cost.Furthermore the valve of oil-free air compressor inlet and outlet at this stage is integrated in valve
At plate, for the structure because inlet and outlet valve is arranged on the valve plate of limited area, air inlet section product is smaller, resistance is big and eliminates the noise
Chamber limited volume causes intake resistance height, Mach number big, so that intake efficiency is lower and noise is high.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention provides a kind of closed crankcase oil-free air pressure of dual-cooled
On the one hand contracting machine and its cooling means not only solve existing open oil-free air compressor easily because of impurity such as extraneous dust granules
Entrance and cause piston and cylinder generation to pull, wear, reduce the working life and stability of compressor, and overcome into
Gas efficiency is lower, the big problem of noise；Still further aspect, setting inside and outside dual is cooling, effectively controls oil-free air compressor
Operating temperature, the problem of avoiding high temperature lower piston ring rapid wear, ensure the safe and stable operation of air compressor.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of closed crankcase oil-free air compressor of dual-cooled, including crankcase, further include valve plate, cylinder cap, work
Fill in link assembly, driving motor, fan cover assembly, centrifugal fan；The valve plate is set at the top of the crankcase, the cylinder cap
It is set to the valve plate top；The crankcase is fixedly connected with the valve plate, cylinder cap respectively and forms closed crankcase knot
Structure；Piston rod part is equipped in the crankcase；The fan cover assembly, crankcase, driving motor are sequentially connected, the wind
It fans shade assembly and the centrifugal fan constitutes external cooling, the piston rod part, crankcase collectively form internal cooling.
In any of the above-described scheme preferably, the fan cover assembly includes fan guard, lid, connecting plate, air mistake
Filter；The top of the fan guard is fixedly connected with the lid, and the bottom of the fan guard passes through connecting plate and the crankshaft
The outer wall bottom of case is fixedly connected, and the lid and fan guard, connecting plate are coated on the crankshaft box shell back to driving motor
Outer wall on and form cavity；The fan cover assembly is fixedly connected with the crankshaft box outer wall, the air filter cover
Top passes through and puts in cavity.
In any of the above-described scheme preferably, the piston rod part includes piston, cylinder, eccentric disc, bearing, company
Bar, piston pin；The piston be hollow barrel-like structure, the piston it is opening down, be provided on the piston piston pin peace
Fill hole；The piston is located in institute's cylinder and cooperates with it, and the top of the piston is equipped with intake valve, the cylinder fixed setting
Top in the crankcase.
In any of the above-described scheme preferably, eccentric mounting hole is offered on the eccentric disc；The driving motor
Flange be fixedly connected with the outer wall of the crankcase, on the driving motor output shaft in the crankcase and the eccentric disc
Mounting hole is fixedly connected, and is extend out in cavity；The eccentric disc is located in the big end end and is realized by bearing
Rotation connection, the small end of connecting rod end are formed by bearing and piston pin and are rotatablely connected, and the piston pin is fixedly connected with the piston.
In any of the above-described scheme preferably, the centrifugation wind is socketed in the driving motor output shaft in the cavity
Fan, in the cavity, position corresponding with the centrifugal fan blade opens up on the fan guard for the centrifugal fan position
There is flow-guiding channel, the flow-guiding channel is the circular passage being placed equidistant with from inside to outside.
In any of the above-described scheme preferably, the outer wall of the crankcase is equipped with the radiating fin of multiple equidistantly distributeds
The water conservancy diversion direction of piece, the radiating fin is parallel with fan cover assembly outer direction；The cooling that the centrifugal fan generates
Air-flow realizes the external cooling of air compressor through the fan cover assembly and radiating fin guiding.
In any of the above-described scheme preferably, corresponding with cylinder on the crankcase side wall far from driving motor
Position is equipped with air inlet, the center line of the air inlet and the central axis of cylinder, between the crankcase and the cylinder
Equipped with inlet channel, one end of the air filter is injected in air inlet, and the other end of the air filter is through described
Lid, external cooling air-flow enter circulating cooling in crankcase through air filter and air inlet, then through on the piston into
Air valve flows into cylinder interior, before being compressed, realizes cooling to compressor inside.
In any of the above-described scheme preferably, the air filter includes fixed lid, connecting shaft, is set in connecting shaft
On filter core, mounting rack is arranged in position corresponding with air inlet on the lid, and the filter core is located in the mounting rack, institute
The fixed lid one end far from crankcase that is coated on mounting rack is stated, the fixed lid connects by the way that one end of screw and connecting shaft is fixed
It connects, the other end of the connecting shaft passes through mounting rack and injects in the air inlet.
In any of the above-described scheme preferably, the connecting shaft is hollow tubular structures, and the connecting shaft inside filter core
On offer multiple air inlets.
The present invention also provides a kind of cooling means of the closed crankcase oil-free air compressor of dual-cooled, are suitable for upper
State the closed crankcase oil-free air compressor of dual-cooled described in either a program, comprising the following steps:
Step 1, outside is cooling, driving motor rotation, and the output shaft of driving motor drives the centrifugal fan rotation in fan guard
Turn, centrifugal fan does not need power supply and is powered, and the cooling air-flow of generation is oriented to air by fan guard, cover board by centrifugal fan
The water conservancy diversion direction in the direction of compressor high-temperature area, radiating fin is parallel with fan cover assembly outer direction, cooperates fan
Shade assembly makes cooling air-flow be oriented to radiating fin, and the heat that radiating fin generates takes away crankcase by cooling air-flow, make cylinder cap with
Cylinder region is radiated, and is realized to the external cooling of air compressor；
Step 2, inside is cooling, and extraneous cooling air-flow passes through after the filter core on air filter is filtered dust
Air inlet enters in connecting shaft, is then entered in closed crankcase by air inlet again, by between crankcase and cylinder
Air intake duct flows downward, and driving motor drives eccentric disc rotation, so that connecting rod band piston is done reciprocal operation in cylinder, works as piston
When running down, the inlet open being set on piston sucks extraneous cooling air-flow, when air-flow passes through cylinder, connecting rod, bias
When disk, driving motor output shaft component, these components are cooled down, are then entered in cylinder by intake valve again；On piston
When shifting, piston carries out compression to the air-flow in cylinder and is discharged by the exhaust valve on valve plate, realizes in air compressor
Portion is cooling；Step 1 and step 2 are realized cooling to the inside and outside dual of air compressor simultaneously.
Compared with prior art, the closed crankcase oil-free air compressor of dual-cooled provided by the invention and its cooling
Method has the advantages that
1, by being enclosed construction by crankcase designs, the components such as piston, cylinder, bearing, connecting rod, eccentric wheel are sealed
Close in crankcase, avoid the impurity particles such as extraneous dust entrance caused by between piston and cylinder relative motion produced
Raw pulls, wears, and extends the service life of the components such as piston, cylinder, to effectively raise the work of compressor entirety
Make stability and service life
2, dual-cooled design can effectively control the operating temperature of oil-free air compressor, solve because crankcase seals
It closes and the bad problem that causes to radiate, extends the service life of piston rod part；By the way that air is arranged in the outside of crankcase
Filter can suck cool ambient air in crankcase, and the cold air of sucking is first recycled in inside, to cylinder and piston connecting rod unit
After part etc. carries out cooling, then entered in cylinder by the intake valve on piston and compressed, realizes self-cooling function inside crankcase；
3, external centrifugal fan realizes that external forced is air-cooled, and the centrifugal fan coaxial with driving motor is arranged outside crankcase
Blade, and the fan guard and lid that crankcase outer profile is enveloped, when fan work, cooling air is through fan guard water conservancy diversion
Afterwards, flow direction is parallel with radiating fin direction, avoids around arbitrarily diffusion, while optimizing the distribution of cooling air-flow,
It is cooling to form external forced, it is ensured that cooling air carries out crankcase (high-temperature area especially near cylinder cap and cylinder) efficient
Ground is cooling.
4, air filter design is in the cavity that fan guard, lid and crankcase are formed, and compact-sized design is not only
Be conducive to air compressor small form factor requirements, and prefilter is carried out to outside air, prevents from carrying dust entrance in air
Piston, cylinder are caused to pull and be worn in crankcase, plays the role of protecting compressor.
5, by crankcase closure designs, intake valve is individually arranged on piston, can increase exponentially air inlet section product,
Intake resistance and air inlet Mach number are reduced, not only improves intake efficiency, but also the big volume that closed crankcase is formed is eliminated the noise
Chamber greatly reduces the noise generated when compressor operation.
Detailed description of the invention
Fig. 1 is the one excellent of the closed crankcase oil-free air compressor of dual-cooled provided by the invention and its cooling means
Select the overall structure diagram of embodiment；
Fig. 2 is the cross-sectional view of embodiment illustrated in fig. 1；
Fig. 3 is the 3-D view of eccentric wheel in embodiment illustrated in fig. 1；
Fig. 4 is the main view of embodiment illustrated in fig. 3.
Explanation: 1, crankcase is marked in figure；2, mounting rack；3, driving motor；4, cylinder cap；5, fan guard；6, flow-guiding channel；
7, output shaft；8, connecting rod；9, air inlet；10, intake valve；11, exhaust valve；12, connecting shaft；13, centrifugal fan；14, filter core；
15, connecting plate；16, lid；17, fixed lid；18, mounting hole；19, cylinder；20, valve plate；21, eccentric disc；22, radiating fin.
Specific embodiment
In order to be further understood that summary of the invention of the invention, the present invention is elaborated below in conjunction with specific embodiment.
As shown in Figs 1-4, an embodiment of the closed crankcase oil-free air compressor of dual-cooled according to the invention,
It further include valve plate 20, cylinder cap 4, piston rod part, driving motor 3, fan cover assembly, centrifugal fan 13 including crankcase 1；
The valve plate 20 is set to 1 top of crankcase, and the cylinder cap 4 is set to 20 top of valve plate；The crankcase 1 and institute
State valve plate 20, cylinder cap 4 is fixedly connected to form closed 1 structure of crankcase；The piston connecting rod unit is equipped in the crankcase 1
Part；The fan cover assembly, crankcase 1, driving motor 3 are sequentially connected, the fan cover assembly and 13 structure of centrifugal fan
Cooling at outside, the piston rod part, crankcase 1 collectively form internal cooling.
The fan cover assembly includes fan guard 5, lid 16, connecting plate 15, air filter；The top of the fan guard 5
Portion is fixedly connected with the lid 16, and the bottom of the fan guard 5 is solid by the outer wall bottom of connecting plate 15 and the crankcase 1
Fixed connection, the lid 16 and fan guard 5, connecting plate 15 are coated on 1 shell of crankcase back on the outer wall of driving motor 3
And form cavity；The fan cover assembly is fixedly connected with 1 outer wall of crankcase, is passed through at the top of the air filter cover
And it puts in cavity.
The piston rod part includes piston, cylinder 19, eccentric disc 21, bearing, connecting rod 8, piston pin；The piston is
Hollow barrel-like structure, the piston it is opening down, piston pin mounting hole is provided on the piston；The piston is located at institute's gas
Cooperate in cylinder 19 and with it, the top of the piston is equipped with intake valve 10, and the cylinder 19 is fixed in the crankcase 1
Top.The material of cylinder 19 is brass, and piston is made of aluminum material；
Eccentric mounting hole 18 is offered on the eccentric disc 21；The number of mounting hole 18 is two, the driving motor 3
Flange be fixedly connected with the outer wall of the crankcase 1, and the output shaft 7 of driving motor 3 is through the crankcase 1 and extending out to
In cavity, 3 output shaft 7 of driving motor in the crankcase 1 is fixedly connected with the mounting hole 18 on the eccentric disc 21；It is described
Eccentric disc 21 is located in 8 stub end of connecting rod and realizes rotation connection by bearing, the small head end of the connecting rod 8 by bearing and
Piston pin forms rotation connection, and the piston pin is fixedly connected with the piston.
The centrifugal fan 13 is socketed on 3 output shaft 7 of driving motor in the cavity, the centrifugal fan 13 is located at institute
It states in cavity, position corresponding with 13 blade of centrifugal fan offers flow-guiding channel 6 on the fan guard 5, described to lead
Circulation road 6 is the circular passage being placed equidistant with from inside to outside.Air enters in cavity through flow-guiding channel 6, then through air filtration
Device enters in crankcase 1.
The outer wall of the crankcase 1 is equipped with the radiating fin 22 of multiple equidistantly distributeds, and the radiating fin 22 is led
It is parallel with fan cover assembly outer direction to flow direction；It is i.e. parallel with fan guard, the outer direction of lid, the centrifugal fan
13 cooling air-flows generated are oriented to through the fan guard, lid and the radiating fin realizes the external cooling of air compressor.
Far from driving motor 3 the crankcase side wall on position corresponding with cylinder 19 be equipped with air inlet, it is described into
The central axis of the center line of port and cylinder 19 is equipped with inlet channel between the crankcase 1 and the cylinder 19, i.e., into
There is gap to form inlet channel between 19 axial direction of port and cylinder, one end of the air filter is injected in air inlet,
The other end of the air filter runs through the lid 16, and external cooling air-flow enters crankshaft through air filter and air inlet
Circulating cooling in case 1, then cylinder interior is flowed into through the intake valve on the piston, before being compressed, realize to compressor inside
It is cooling.
The air filter includes fixed lid 17, connecting shaft 12, the filter core 14 being set in connecting shaft 12, the lid
Mounting rack 2 is arranged in position corresponding with air inlet on 16, and the filter core 14 is located in the mounting rack 2, the fixed lid 17
It is coated on the one end of mounting rack 2 far from crankcase 1, fixed lid 17 is located at the outside of the lid 16, and the fixed lid 17 passes through
Screw is fixedly connected with one end of connecting shaft 12, and the other end of the connecting shaft 12 passes through mounting rack 2 and injects in the air inlet.
Mounting rack 2 is coated on the outside of filter core 14.
The connecting shaft 12 is hollow tubular structures, and multiple air inlets 9 are offered in the connecting shaft 12 inside filter core 14.
Company between connection, fan guard 5 between crankcase 1 and cylinder cap 4 and the connection between lid 16, fan guard 5 and connecting plate 15
Connect is to be detachably fixed connection.
The present embodiment further includes a kind of cooling of oil-free piston type air compressor of closed crankcase 1 with dual-cooled
Method, comprising the following steps:
Step 1, outside is cooling, driving motor rotation, and the output shaft of driving motor drives the centrifugal fan rotation in fan guard
Turn, centrifugal fan does not need power supply and is powered, and the cooling air-flow of generation is oriented to air by fan guard, cover board by centrifugal fan
The water conservancy diversion direction in the direction of compressor high-temperature area, radiating fin is parallel with fan cover assembly outer direction, cooperates fan
Shade assembly makes cooling air-flow be oriented to radiating fin, and the heat that radiating fin generates takes away crankcase by cooling air-flow, make cylinder cap with
Cylinder region is radiated, and is realized to the external cooling of air compressor；
Step 2, inside is cooling, and extraneous cooling air-flow passes through after the filter core on air filter is filtered dust
Air inlet enters in connecting shaft, is then entered in closed crankcase by air inlet again, by between crankcase and cylinder
Air intake duct flows downward, and driving motor drives eccentric disc rotation, so that connecting rod band piston is done reciprocal operation in cylinder, works as piston
When running down, the inlet open being set on piston sucks extraneous cooling air-flow, when air-flow passes through cylinder, connecting rod, bias
When disk, driving motor output shaft component, these components are cooled down, are then entered in cylinder by intake valve again；On piston
When shifting, piston carries out compression to the air-flow in cylinder and is discharged by the exhaust valve on valve plate, realizes in air compressor
Portion is cooling；Step 1 and step 2 are realized cooling to the inside and outside dual of air compressor simultaneously.
The working principle of the present embodiment: the output shaft 7 on driving motor 3 is rotated with movable eccentric wheel, so that connecting rod 8 be made to drive
Piston does reciprocating linear motion, and during piston moves downward, the intake valve 10 being set on piston is opened, and sucks outside air, and
And intake valve 10 is individually arranged on piston can increase exponentially air inlet section product, is reduced intake resistance and air inlet number, is promoted
Intake efficiency carries out compression to air in piston upwards and is passed through compressed air out by the exhaust valve 11 on valve plate
Stomata discharge；In moving back and forth breathing process, outside air is entered in closed crankcase 1 piston by air filter, and
The components such as bearing, connecting rod 8 are cooled down, is then entered in cylinder 19 by the intake valve 10 on piston again, realizes song
The inside refrigerating function of axle box 1, closed 1 space of crankcase becomes good anechoic room in this course, can dramatically ground
Noise is reduced, while also avoiding the piston caused by of the impurity such as extraneous dust, particle and pulling, grinding for cylinder 19
Damage, effectively raises job stability and the service life of compressor；Driving motor 3 also can band while driving reciprocating motion of the pistons
Dynamic 13 blade of centrifugal fan rotation, and under the water conservancy diversion through fan guard 5 and lid 16, cold air is blowed to and is radiated by centrifugal fan 13
The parallel direction of fin, to realize high-temperature area (19 peripheral region of cylinder cap 4 and cylinder of cooling air-flow guiding air compressor
Domain), external forced cooling is formed, oil-free air compressor can effectively be controlled by inside and outside dual-cooled design
Operating temperature ensures the safe and stable operation of air compressor, effectively extends the service life of piston ring.
Compared with prior art, the present embodiment has the advantages that
By by crankcase designs be enclosed construction, by the components such as piston, cylinder, bearing, connecting rod, eccentric wheel closing with
In crankcase, avoid the impurity particles such as extraneous dust entrance caused by between piston and cylinder relative motion and generate
It pulls, wear, extend the service life of the components such as piston, cylinder, and then the work for effectively raising compressor entirety is steady
The qualitative and service life；Oil-free air compression can be effectively controlled by the internal cooling and external cooling dual-cooled design of setting
The operating temperature of machine solves the problems, such as to cause to radiate because of crankcase closing bad, effectively extends the service life of piston；
Since crankcase is closed, noise can be effectively reduced.
It will be apparent to those skilled in the art that the closed crankcase oil-free air compressor of dual-cooled of the invention includes
Any combination of each section shown by the summary of the invention and specific embodiment part and attached drawing of aforementioned present invention specification,
It describes one by one as space is limited and for each scheme for keeping specification concise without constituting these combinations.It is all in spirit of the invention
Within principle, any modification, equivalent substitution, improvement and etc. done be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of closed crankcase oil-free air compressor of dual-cooled, including crankcase, it is characterised in that: further include valve
Plate, cylinder cap, piston rod part, driving motor, fan cover assembly, centrifugal fan；The valve plate is set to the crankcase top
Portion, the cylinder cap are set to the valve plate top；The crankcase is fixedly connected with the valve plate, cylinder cap respectively and forms closing
Formula crankcase structure；Piston rod part is equipped in the crankcase；The fan cover assembly, crankcase, driving motor are successively
Connection, the fan cover assembly and the centrifugal fan constitute external cooling, and the piston rod part, crankcase collectively form
Inside is cooling.
2. the closed crankcase oil-free air compressor of dual-cooled according to claim 1, it is characterised in that: the wind
Fanning shade assembly includes fan guard, lid, connecting plate, air filter；The top of the fan guard is fixedly connected with the lid,
The bottom of the fan guard is fixedly connected by connecting plate with the outer wall bottom of the crankcase, and the lid and fan guard connect
Fishplate bar is coated on the crankshaft box shell back on the outer wall of driving motor and forming cavity；The fan cover assembly and the song
Axle box outer wall is fixedly connected, and the air filter is passed through at the top of lid and put in cavity.
3. the closed crankcase oil-free air compressor of dual-cooled according to claim 2, it is characterised in that: the work
Filling in link assembly includes piston, cylinder, eccentric disc, bearing, connecting rod, piston pin；The piston is hollow barrel-like structure, the work
That fills in is opening down, and piston pin mounting hole is provided on the piston；The piston is located in institute's cylinder and cooperates with it, described
The top of piston is equipped with intake valve, and the cylinder is fixed at the top in the crankcase.
4. the closed crankcase oil-free air compressor of dual-cooled according to claim 3, it is characterised in that: described inclined
Eccentric mounting hole is offered on cartridge；The flange of the driving motor is fixedly connected with the outer wall of the crankcase, the song
Driving motor output shaft in axle box is fixedly connected with the mounting hole on the eccentric disc, and is extend out in cavity；It is described inclined
Cartridge, which is located in the big end end and is realized by bearing, to be rotatablely connected, and the small end of connecting rod end passes through bearing and piston pin
Rotation connection is formed, the piston pin is fixedly connected with the piston.
5. the closed crankcase oil-free air compressor of dual-cooled according to claim 2, it is characterised in that: the sky
Be socketed the centrifugal fan in intracavitary driving motor output shaft, the centrifugal fan position in the cavity, the fan guard
Upper position corresponding with the centrifugal fan blade offers flow-guiding channel, and the flow-guiding channel is to be placed equidistant with from inside to outside
Circular passage.
6. the closed crankcase oil-free air compressor of dual-cooled according to claim 5, it is characterised in that: the song
The outer wall of axle box is equipped with the radiating fin of multiple equidistantly distributeds, the water conservancy diversion direction of the radiating fin and the fan guard group
Part outer direction is parallel；The cooling air-flow that the centrifugal fan generates is oriented to real through the fan cover assembly and the radiating fin
The external cooling of existing air compressor.
7. the closed crankcase oil-free air compressor of dual-cooled according to claim 3, it is characterised in that: far from drive
Position corresponding with cylinder is equipped with air inlet, the center line and cylinder of the air inlet on the crankcase side wall of dynamic motor
Central axis, between the crankcase and the cylinder be equipped with inlet channel, one end of the air filter inject into
In port, the other end of the air filter runs through the lid, external cooling air-flow through air filter and air inlet into
Enter circulating cooling in crankcase, then flow into cylinder interior through the intake valve on the piston, before being compressed, realizes to compressor
Inside is cooling.
8. the closed crankcase oil-free air compressor of dual-cooled according to claim 2, it is characterised in that: the sky
Air filter includes fixed lid, connecting shaft, the filter core being set in connecting shaft, position corresponding with air inlet on the lid
Mounting rack is set, and the filter core is located in the mounting rack, and the fixed lid is coated on the one end of mounting rack far from crankcase, institute
Fixed lid is stated to be fixedly connected by screw with one end of connecting shaft, the other end of the connecting shaft pass through mounting rack inject described in into
In port.
9. the closed crankcase oil-free air compressor of dual-cooled according to claim 8, it is characterised in that: the company
Spindle is hollow tubular structures, and multiple air inlets are offered in the connecting shaft inside filter core.
10. a kind of cooling means of the closed crankcase oil-free air compressor of dual-cooled, it is characterised in that: including following step
It is rapid:
Step 1, outside is cooling, driving motor rotation, and the output shaft of driving motor drives the centrifugal fan rotation in fan guard,
Centrifugal fan is not required to power supply and is powered, and the cooling air-flow of generation is oriented to air by fan guard, cover board and compressed by centrifugal fan
The water conservancy diversion direction in the direction of machine high-temperature area, radiating fin is parallel with fan cover assembly outer direction, cooperates fan guard group
Part makes cooling air-flow be oriented to radiating fin, and the heat that radiating fin generates is taken away crankcase, makes cylinder cap and cylinder by cooling air-flow
Region is radiated, and is realized to the external cooling of air compressor；
Step 2, inside is cooling, and extraneous cooling air-flow passes through air inlet after the filter core on air filter is filtered dust
Hole enters in connecting shaft, is then entered in closed crankcase by air inlet again, by the air inlet between crankcase and cylinder
Road flows downward, and driving motor drives eccentric disc rotation, so that connecting rod band piston is done reciprocal operation in cylinder, when piston is downward
When operation, the inlet open being set on piston sucks extraneous cooling air-flow, when air-flow by cylinder, connecting rod, eccentric disc,
When driving motor output shaft component, these components are cooled down, are then entered in cylinder by intake valve again；Piston moves up
When, piston carries out compression to the air-flow in cylinder and is discharged by the exhaust valve on valve plate, realizes the inside to air compressor
It is cooling；Step 1 and step 2 are realized cooling to the inside and outside dual of air compressor simultaneously.
The cooling means of the closed crankcase oil-free air compressor of dual-cooled is suitable for any one of claim 1-9
The closed crankcase oil-free air compressor of the dual-cooled.
Priority Applications (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486251A (en) * | 2019-09-27 | 2019-11-22 | 天津联科思创科技发展有限公司 | A kind of integrated exhaust is cooling and the oil-free air compressor of voltage stabilizing function |
| CN112879304A (en) * | 2021-01-28 | 2021-06-01 | 沈阳纪维应用技术有限公司 | Self-driven cooling device for eccentric main shaft of oil-free scroll vacuum pump and use method |
| CN117345579A (en) * | 2023-08-04 | 2024-01-05 | 丹阳市创锐机电设备有限公司 | Novel internal air inlet mute air oil-free compressor |
| CN118148879A (en) * | 2024-05-13 | 2024-06-07 | 江苏精仁机电科技有限公司 | Oilless air compressor with high heat dispersion structure |
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| CN117345579A (en) * | 2023-08-04 | 2024-01-05 | 丹阳市创锐机电设备有限公司 | Novel internal air inlet mute air oil-free compressor |
| CN117345579B (en) * | 2023-08-04 | 2024-03-15 | 丹阳市创锐机电设备有限公司 | Novel internal air inlet mute air oil-free compressor |
| CN118148879A (en) * | 2024-05-13 | 2024-06-07 | 江苏精仁机电科技有限公司 | Oilless air compressor with high heat dispersion structure |
| CN118148879B (en) * | 2024-05-13 | 2024-07-02 | 江苏精仁机电科技有限公司 | Oilless air compressor with high heat dispersion structure |
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