CN104006590A - Portable refrigerant recovery all-in-one machine with vacuum pump - Google Patents
Portable refrigerant recovery all-in-one machine with vacuum pump Download PDFInfo
- Publication number
- CN104006590A CN104006590A CN201410230051.3A CN201410230051A CN104006590A CN 104006590 A CN104006590 A CN 104006590A CN 201410230051 A CN201410230051 A CN 201410230051A CN 104006590 A CN104006590 A CN 104006590A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- clutch
- rotor
- vavuum pump
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a portable refrigerant recovery all-in-one machine with a vacuum pump and belongs to a maintenance and repair device of a refrigeration device. The portable refrigerant recovery all-in-one machine comprises a motor, a compressor and the vacuum pump, wherein two ends of the motor are respectively provided with a left output shaft and a right output shaft, the left output shaft is in transmission connection with the compressor, the right output shaft is in transmission connection with the vacuum pump, the left output shaft and the right output shaft are respectively connected with a spindle of the motor through a left clutch and a right clutch, the spindle outputs power or stops power output to the left output shaft and the right output shaft through the left clutch and the right clutch. The portable refrigerant recovery all-in-one machine has the advantages that the compressor and the vacuum pump are integrated, and the portable refrigerant recovery all-in-one machine is compact in structure, small in size, light in weight, good in controllability and convenient to carry.
Description
Technical field
The present invention relates to a kind of maintenance device of refrigeration plant, specifically a kind of portable coolant with vavuum pump reclaims all-in-one.
Background technology
Refrigeration plant in use refrigerant has a certain amount of loss, necessary regular replenishment refrigerant for this reason, or in the time that refrigeration plant detects maintenance, all need first to use compressor to extract the refrigerant reclaiming in refrigeration plant, after detection has been keeped in repair, re-use system pressure table group and vavuum pump refrigeration plant pipeline is vacuumized, finally use system pressure table group that cold-producing medium is supplemented and is filled in refrigeration plant.
The existing equipment that refrigerant recovering and refrigeration plant vacuumize is at present independent compressor and the vavuum pump using, and adds various hand-operated tools, and tool equipment is various, causes maintenance personnel to carry extremely inconvenient, complex operation.Also have a kind ofly integrate refrigerant recovering, vacuumize, the portable coolant of the function such as coolant charging reclaims charging machine, although simplified equipment and operation, but the compressor in casing and vavuum pump are still realized running with two motors, thereby cause that equipment volume is large, Heavy Weight, carry maintenance still inconvenient.Therefore, applicant satisfies the demands with regard to a kind of new technical scheme of the problems referred to above design.
Summary of the invention
Technical problem to be solved by this invention is to overcome the problems referred to above, and provide a kind of simple and compact for structure, volume is little, lightweight, the handling good portable coolant with vavuum pump reclaims all-in-one, maintenance personal only need coordinate carrying system Pressure gauge group just can meet need of work again, very convenient.
Technical scheme of the present invention is:
A kind of portable coolant with vavuum pump reclaims all-in-one, comprise motor, compressor and vavuum pump, it is characterized in that: the two ends of described motor are respectively equipped with left output shaft and right output shaft, described left output shaft and compressor driving coupling, described right output shaft and vavuum pump transmission connect, described left output shaft is connected with the main shaft of motor with right clutch by left clutch respectively with right output shaft, and main shaft is by described left clutch and right clutch output shaft and the output of right output shaft left or disconnect power, described left clutch and right clutch are symmetricly set on the two ends of main shaft, left, right clutch includes clutch box, clutch driving link, clutch driven member and control lever, described clutch box is fixedly connected on respectively a left side for motor, on right end cap, left, one end of right output shaft and the two ends of electric machine main shaft are located in clutch box all free to rotately, described clutch driving link is fixedly connected on respectively the two ends of electric machine main shaft, described clutch driven member is set in respectively the right-hand member of left output shaft and the left end of right output shaft, clutch driven member is with left, right output shaft is circumferentially fixing, axially can relative sliding, the opposing end surface of clutch driving link and clutch driven member is provided with can intermeshing ratchet, one end of described control lever is fixedly connected with clutch driven member, the other end stretches out clutch box, stir control lever can solenoidoperated cluthes driven member with ratchet engagement on clutch driving link or separate.Compressor and vavuum pump share a motor, not only combine that compressor and vavuum pump are difunctional to be integrated, and make compact conformation, volume little, lightweight, are easy to carry.Between motor and compressor, vavuum pump, connect by clutch, maintenance personal can select one of them or two to carry out connection work as required, handling good.
Further, compressor of the present invention comprises bent axle, crankcase and at least one cylinder, bent axle is fixedly connected with the left output shaft of motor, bent axle is provided with at least one crank throw, the piston of cylinder is connected on described crank throw by connecting rod and is reciprocating in cylinder by crank-driven, and cylinder head is provided with air admission hole, steam vent, intake valve, air bleeding valve and air valve seat.
Further, compressor of the present invention is double-cylinder oil-free compressor, and two cylinders are symmetricly set on the both sides of bent axle, and the phase difference between two cylinder piston motions is 180 degree.Oilless (oil free) compressor can be realized piston and cylinder inner cavity self-lubricating, and singly drives the structural configuration of twin-tub to make the twice that compressor gas flow is single cylinder in one timing of motor rated speed, and operating efficiency is improved.
Further, piston of the present invention is fixedly connected with small end of connecting rod by screw, and big end is rotatably connected on the crank throw of bent axle by bearing, between piston and small end of connecting rod, is provided with piston ring.
Further, vavuum pump of the present invention is rotary-vane vaccum pump, comprises the pump housing, at least one rotor and at least one group of blade, and described rotor eccentricity is arranged in pump chamber, described blade is contained in the rotor slot of rotor, and rotor is fixedly connected with the right output shaft of motor.
Further, vavuum pump of the present invention is Double-stage rotary vane vacuum pump, the described pump housing comprises drive end bearing bracket, rear end cap, front stator, rear stator and the mesospore between front stator and rear stator, in the chamber of described front stator, there is the front rotor of eccentric setting, front rotor is fixedly connected with the right output shaft of motor, front blade is housed in the rotor slot of front rotor, in the chamber of described rear stator, there is the rear rotor of eccentric setting, rear rotor is fixedly connected with front rotor, and rear blade is housed in the rotor slot of rear rotor.Through the two-stage exhaust of Double-stage rotary vane vacuum pump, the vacuum in refrigeration plant pipeline is higher, is conducive to the filling of follow-up refrigerant.
Further, front stator of the present invention, rear stator and mesospore are structure as a whole, and form integral pump stator.
The invention has the beneficial effects as follows:
1, compressor and vavuum pump share a motor, not only combine that compressor and vavuum pump are difunctional to be integrated, and compact conformation, volume are little, lightweight, are easy to carry;
2, between motor and compressor, vavuum pump, connect by clutch, maintenance personal can select one of them or two to carry out connection work as required, handling good, meets different needs.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the sectional drawing of compressor in the embodiment of the present invention;
Fig. 3 is the sectional drawing of embodiment of the present invention intermediate pump.
Detailed description of the invention
Now the present invention is further illustrated in conjunction with the accompanying drawings and embodiments:
With reference to accompanying drawing Fig. 1, the portable coolant with vavuum pump of the present embodiment reclaims all-in-one, the compressor 20 and the vavuum pump 30 that comprise motor 10 and driven by this motor 10, compressor 20 is for reclaiming the refrigerant of refrigeration plant, and vavuum pump 30 is for vacuumizing refrigeration system.
Motor 10 comprises main shaft 11, stator 12, rotor 13, left end cap 14 and right end cap 15, and rotor 13 is arranged in stator 12, and main shaft 11 is located in rotor 13 and synchronously rotates with rotor 13.The two ends of motor 10 are respectively equipped with left output shaft 16 and right output shaft 17, and left output shaft 16 is fixedly connected with the bent axle 21 of compressor 20, and right output shaft 17 is fixedly connected with the front rotor 31 of vavuum pump 30.Left output shaft 16 is connected with the main shaft 11 of motor 10 with right clutch 50 by left clutch 40 respectively with right output shaft 17, and main shaft 11 by left clutch 40 and right clutch 50, export or disconnect power left by output shaft 16 and right output shaft 17.
Left clutch 40 and right clutch 50 are symmetricly set on the two ends of main shaft 11, and left-right clutch device 40,50 includes clutch box 41, clutch driving link 42, clutch driven member 43 and control lever 44.Clutch box 41 is fixedly connected on respectively on the left and right end cap 14,15 of motor 10, the two ends of the right-hand member of left output shaft 16, the left end of right output shaft 17 and electric machine main shaft 11 all by bearing free to rotate be located in clutch box 41.Clutch driving link 42 is fixedly connected on respectively the two ends of electric machine main shaft 11, clutch driven member 43 is set in respectively the right-hand member of left output shaft 16 and the left end of right output shaft 17, clutch driven member 43 and left and right output shaft 16,17 circumferentially fixing, axially can relative sliding, the opposing end surface of clutch driving link 42 and clutch driven member 43 is provided with can intermeshing ratchet 45.The top of clutch box 41 is provided with a stopper slot, the periphery of clutch driven member 43 is provided with a circle flange, one end of control lever 44 is fixedly connected with the flange on clutch driven member 43, the other end stretches out clutch box 41 by stopper slot, the control lever 44 that fiddles with in stopper slot can engage or separate with the ratchet 45 on clutch driving link 42 by solenoidoperated cluthes driven member 43, thereby realizes main shaft 11 to left and right output shaft 16,17 outputs or disconnect power.
With reference to accompanying drawing Fig. 1 and Fig. 2, the compressor 20 of the present embodiment is double-cylinder oil-free compressor, comprises bent axle 21, crankcase 22 and two cylinders 23, and the cylinder body of cylinder 23 is bolted to connection outside crankcase 22.The two ends of crankcase 22 are respectively equipped with front shroud 221 and back shroud 222, and back shroud 222 is provided with axis hole, and the left end of the left output shaft 16 of motor 10 is fixedly connected with bent axle 21 through the axis hole of back shroud 222.The inner side of crankcase back shroud 222 is also provided with step groove for shaft seal and shaft seal pressing plate are installed.Bent axle 21 is provided with an eccentric crank throw, two cylinders 23 are symmetricly set on the both sides of bent axle 21, the piston 24 of cylinder 23 is connected on crank throw by connecting rod 25 and is driven at cylinder 23 interior reciprocatingly by bent axle 21, and the phase difference between 24 motions of two cylinder pistons is 180 degree.
Piston 24 is fixedly connected with small end of connecting rod by screw, and big end is rotatably connected on the crank throw of bent axle 21 by bearing.Between piston 24 and small end of connecting rod, be provided with piston ring 26, the outer rim of piston ring 26 wraps the excircle of piston 24, piston ring 26 and cylinder 23 inner chamber of cylinder block frictions when piston 24 moves back and forth, piston ring 26 adopts, and PTFE material high temperature resistant, that coefficient of friction is extremely low is made, the inner chamber of cylinder 23 cylinder bodies is coated with wear-resistant coating, and piston ring 26 can be realized self-lubricating during with inner chamber of cylinder block relative motion and not need to add any lubricant.
One end of cylinder 23 cylinder bodies is provided with cylinder cap 231, cylinder cap 231 is provided with air admission hole and steam vent, air admission hole, steam vent place arrange respectively intake valve 232, air bleeding valve 233, intake valve 232, air bleeding valve 233 are arranged in cylinder cap 231 by air valve seat 234, and the external port of air admission hole and steam vent is all equipped with two-way or three-way connection.
The operation principle of double-cylinder oil-free compressor is as follows:
The left output shaft of motor drives the reciprocating motion of the pistons of two cylinders that the volume generating period of cylinder inner cavity is changed by crankshaft connecting rod system simultaneously.In the time that volume of cylinder expands, in cylinder, it is vacuum, the outer air pressure of cylinder is greater than cylinder internal gas pressure, being applied gas and entering cylinder by intake valve, is now breathing process: in the time that volume dwindles, the gas entering in cylinder is compressed, cylinder internal gas pressure increases sharply, in the time being greater than outside cylinder air pressure, air bleeding valve is opened, and is now exhaust process.That one week each cylinder of motor rotation completes is once air-breathing, the process of compression, exhaust, and therefore gas flow when this double-cylinder oil-free compressor work is the twice of single cylinder in one timing of motor rated speed.
With reference to accompanying drawing 1 and Fig. 3, the vavuum pump 30 of the present embodiment is Double-stage rotary vane vacuum pump, comprise drive end bearing bracket 31, rear end cap 32, front stator, rear stator and the mesospore between front stator and rear stator, front stator, rear stator and mesospore are structure as a whole, form integral pump stator 33, drive end bearing bracket 31, rear end cap 32 are separately fixed at the left and right two ends of integral pump stator 33, and drive end bearing bracket 31 is fixing with right clutch case 41.In the chamber of front stator, have the front rotor 34 of eccentric setting, front blade 341 is housed in the rotor slot of front rotor 34, front rotor 34 is fixedly connected with the right output shaft 17 of motor 10; In the chamber of rear stator, have the rear rotor 35 of eccentric setting, rear blade 351 is housed in the rotor slot of rear rotor 35, rear rotor 35 is fixedly connected with front rotor 34.Front blade 341 and rear blade 351 are made up of two rotary vanes with spring respectively, when rotor, under the effect of centrifugal force and spring tension, blade reciprocatingly slides and remains and contact with bore of stator inwall along rotor slot, bore of stator is separated into the working chamber of two variable volumes: suction muffler and discharge chamber.The suction muffler of front stator communicates with air entry, and discharge chamber is communicated with the suction muffler of rear stator by the inter-stage passage in mesospore, and rear stator is provided with air bleeding valve, is also provided with auxiliary exhaust valve in front stator.
The operation principle of Double-stage rotary vane vacuum pump is as follows:
The right output shaft of motor rotarily drives front rotor and make eccentric rotary in front stator chamber, the suction muffler volume of front stator increases generation negative pressure gradually, gas in refrigeration plant pipeline just sucks continuously from air entry, the volume of discharge chamber reduces gradually simultaneously, gas in suction chamber is compressed, and air pressure is anxious to be increased, and a compressed gas part is directly discharged from auxiliary exhaust valve, another part enters the suction muffler of rear stator by inter-stage passage, again after compression, discharge from air bleeding valve; When after vacuum pump work a period of time, air pressure step-down in refrigeration plant pipeline, the gas that front stator sucks air pressure after compression is also not enough to push open auxiliary exhaust valve, just directly enters the suction muffler of rear stator by inter-stage passage, again after compression, discharges from air bleeding valve.So periodic duty is until complete the vacuum of refrigeration plant pipeline.
In the time that needs compressor works independently, the control lever of stirring left clutch intermeshes the ratchet of the clutch driving link of clutch driven member on left output shaft and electric machine main shaft left end, make main shaft to left output shaft outputting power, the control lever of stirring right clutch makes main shaft disconnect power to right output shaft, vacuum air pump inoperative, left output shaft drives compressor operating; In the time that needs vavuum pump works independently, stir control lever and make main shaft disconnect power to left output shaft, to right output shaft outputting power, compressor is not worked, and right output shaft drives vavuum pump work; In the time that needs compressor and vavuum pump are worked simultaneously, stir control lever and make main shaft simultaneously to left and right output shaft outputting power, left and right output shaft drives compressor, vavuum pump work simultaneously.
Finally explanation is; above embodiment is only unrestricted in order to technical scheme of the present invention to be described; although the present invention is had been described in detail with reference to preferred embodiment; but those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention; and do not depart from aim and the scope of technical solution of the present invention, these amendments or be equal to replacement and all should be encompassed among claim protection domain of the present invention.
Claims (7)
1. the portable coolant with vavuum pump reclaims an all-in-one, comprises motor, compressor and vavuum pump, it is characterized in that:
The two ends of described motor are respectively equipped with left output shaft and right output shaft, described left output shaft and compressor driving coupling, and described right output shaft and vavuum pump transmission connect;
Described left output shaft is connected with the main shaft of motor with right clutch by left clutch respectively with right output shaft, and main shaft is by described left clutch and right clutch output shaft and the output of right output shaft left or disconnect power;
Described left clutch and right clutch are symmetricly set on the two ends of main shaft, left, right clutch includes clutch box, clutch driving link, clutch driven member and control lever, described clutch box is fixedly connected on respectively a left side for motor, on right end cap, left, one end of right output shaft and the two ends of electric machine main shaft are located in clutch box all free to rotately, described clutch driving link is fixedly connected on respectively the two ends of electric machine main shaft, described clutch driven member is set in respectively the right-hand member of left output shaft and the left end of right output shaft, clutch driven member is with left, right output shaft is circumferentially fixing, axially can relative sliding, the opposing end surface of clutch driving link and clutch driven member is provided with can intermeshing ratchet, one end of described control lever is fixedly connected with clutch driven member, the other end stretches out clutch box, stir control lever can solenoidoperated cluthes driven member with ratchet engagement on clutch driving link or separate.
2. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 1, it is characterized in that: described compressor comprises bent axle, crankcase and at least one cylinder, bent axle is fixedly connected with the left output shaft of motor, bent axle is provided with at least one crank throw, the piston of cylinder is connected on described crank throw by connecting rod and is reciprocating in cylinder by crank-driven, and cylinder head is provided with air admission hole, steam vent, intake valve, air bleeding valve and air valve seat.
3. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 2, it is characterized in that: described compressor is double-cylinder oil-free compressor, and two cylinders are symmetricly set on the both sides of bent axle, the phase difference between two cylinder piston motions is 180 degree.
4. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 3, it is characterized in that: described piston is fixedly connected with small end of connecting rod by screw, big end is rotatably connected on the crank throw of bent axle by bearing, between piston and small end of connecting rod, is provided with piston ring.
5. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 1, it is characterized in that: described vavuum pump is rotary-vane vaccum pump, comprise the pump housing, at least one rotor and at least one group of blade, described rotor eccentricity is arranged in pump chamber, described blade is contained in the rotor slot of rotor, and rotor is fixedly connected with the right output shaft of motor.
6. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 5, it is characterized in that: described vavuum pump is Double-stage rotary vane vacuum pump, the described pump housing comprises drive end bearing bracket, rear end cap, front stator, rear stator, and mesospore between front stator and rear stator, in the chamber of described front stator, there is the front rotor of eccentric setting, front rotor is fixedly connected with the right output shaft of motor, front blade is housed in the rotor slot of front rotor, in the chamber of described rear stator, there is the rear rotor of eccentric setting, rear rotor is fixedly connected with front rotor, rear blade is housed in the rotor slot of rear rotor.
7. reclaim all-in-one according to the portable coolant with vavuum pump claimed in claim 6, it is characterized in that: described front stator, rear stator and mesospore are structure as a whole, form integral pump stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230051.3A CN104006590A (en) | 2014-05-28 | 2014-05-28 | Portable refrigerant recovery all-in-one machine with vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410230051.3A CN104006590A (en) | 2014-05-28 | 2014-05-28 | Portable refrigerant recovery all-in-one machine with vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104006590A true CN104006590A (en) | 2014-08-27 |
Family
ID=51367373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410230051.3A Pending CN104006590A (en) | 2014-05-28 | 2014-05-28 | Portable refrigerant recovery all-in-one machine with vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006590A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630376A (en) * | 2018-11-19 | 2019-04-16 | 蒋友荣 | The all-in-one machine structure of vacuum pump and recycling machine |
| CN111379687A (en) * | 2018-12-28 | 2020-07-07 | 上海海立电器有限公司 | Pump press |
| CN111578544A (en) * | 2019-02-19 | 2020-08-25 | 上海海立电器有限公司 | Pump compressor refrigerating system and control method thereof |
| CN111720287A (en) * | 2019-03-20 | 2020-09-29 | 上海海立电器有限公司 | Pump press |
| CN112112824A (en) * | 2019-06-21 | 2020-12-22 | 上海海立电器有限公司 | Pump press, refrigeration cycle system and control method thereof |
| CN114909277A (en) * | 2022-04-26 | 2022-08-16 | 天津大学 | Compressor capable of providing negative pressure function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201865877U (en) * | 2010-09-07 | 2011-06-15 | 李明增 | Double-cylinder oil-free compressor |
| CN102460041A (en) * | 2009-06-23 | 2012-05-16 | 因菲康有限公司 | Maintenance machine for refrigeration units |
| CN202673687U (en) * | 2012-01-09 | 2013-01-16 | 浙江振圣机电科技有限公司 | Integral type sliding vane rotary vacuum pump |
| CN203893518U (en) * | 2014-05-28 | 2014-10-22 | 浙江振圣机电科技有限公司 | Portable coolant recycling all-in-one machine with vacuum pump |
-
2014
- 2014-05-28 CN CN201410230051.3A patent/CN104006590A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460041A (en) * | 2009-06-23 | 2012-05-16 | 因菲康有限公司 | Maintenance machine for refrigeration units |
| CN201865877U (en) * | 2010-09-07 | 2011-06-15 | 李明增 | Double-cylinder oil-free compressor |
| CN202673687U (en) * | 2012-01-09 | 2013-01-16 | 浙江振圣机电科技有限公司 | Integral type sliding vane rotary vacuum pump |
| CN203893518U (en) * | 2014-05-28 | 2014-10-22 | 浙江振圣机电科技有限公司 | Portable coolant recycling all-in-one machine with vacuum pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630376A (en) * | 2018-11-19 | 2019-04-16 | 蒋友荣 | The all-in-one machine structure of vacuum pump and recycling machine |
| CN109630376B (en) * | 2018-11-19 | 2020-08-18 | 蒋友荣 | Vacuum pump and all-in-one structure of machine of retrieving |
| CN111379687A (en) * | 2018-12-28 | 2020-07-07 | 上海海立电器有限公司 | Pump press |
| CN111578544A (en) * | 2019-02-19 | 2020-08-25 | 上海海立电器有限公司 | Pump compressor refrigerating system and control method thereof |
| CN111720287A (en) * | 2019-03-20 | 2020-09-29 | 上海海立电器有限公司 | Pump press |
| CN112112824A (en) * | 2019-06-21 | 2020-12-22 | 上海海立电器有限公司 | Pump press, refrigeration cycle system and control method thereof |
| CN114909277A (en) * | 2022-04-26 | 2022-08-16 | 天津大学 | Compressor capable of providing negative pressure function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104006590A (en) | Portable refrigerant recovery all-in-one machine with vacuum pump | |
| CN205422978U (en) | Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery | |
| CN203893518U (en) | Portable coolant recycling all-in-one machine with vacuum pump | |
| CN203146359U (en) | Stator-free single-screw type air oil-less compressor | |
| CN113464433B (en) | Air compressing device | |
| CN108286462B (en) | Engine with a motor | |
| CN206477997U (en) | A kind of direct-connected oil-free air compressor | |
| CN113374573B (en) | Circumferential flow turbine | |
| CN214247673U (en) | Cam-driven scraper type compressor | |
| CN101368564A (en) | Integral translational rotating compression device | |
| CN110500270B (en) | Bidirectional high-speed miniature plunger pump with inserted oil port | |
| CN104176038B (en) | A kind of automobile-used transmission case of integrated oil-sealed rotary pump | |
| CN203669935U (en) | Compound rotor power machine | |
| CN202545248U (en) | Double-cylinder rotary compressor | |
| CN201148954Y (en) | Multiple-piston type air compressor | |
| CN201666250U (en) | Air compressor | |
| CN203515991U (en) | Magnetic-type coplanar multi-cylinder multistage cam combined compressor | |
| CN204805093U (en) | Air compressor | |
| CN219993856U (en) | Gear-driven double-cylinder inflator pump | |
| CN203560054U (en) | Coplanar multi-cylinder multistage combination compressor | |
| CN103967742A (en) | Magnetic coplanar multi-cylinder multi-level cam combining compressor | |
| CN2443172Y (en) | External circulation rotor thickened oil pump | |
| CN103671109B (en) | A kind of rib bar vacuum pump | |
| CN101187363A (en) | Multi-piston type air compressor | |
| CN216198760U (en) | Coal gas blower capable of recycling tar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140827 |