CN202646043U - Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique - Google Patents
Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique Download PDFInfo
- Publication number
- CN202646043U CN202646043U CN 201220149726 CN201220149726U CN202646043U CN 202646043 U CN202646043 U CN 202646043U CN 201220149726 CN201220149726 CN 201220149726 CN 201220149726 U CN201220149726 U CN 201220149726U CN 202646043 U CN202646043 U CN 202646043U
- Authority
- CN
- China
- Prior art keywords
- gear
- wind
- air compressor
- coupling
- motor
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in an aeronautic technique. The centralized wind-power type high-wind-yield cylinder housing screw blade air compressor comprises a flow guide cylinder, a compression main engine, a gear linking cylinder, a motor and a spiral cone, wherein the motor is connected with the compression main engine through the gear linking cylinder, the flow guide cylinder is connected with a main engine housing of the compression main engine, the main engine housing is of a cylinder shape, the flow guide cylinder is of a cone shape, and the spiral cone is mounted on one end, of the compression main engine, close to an air outlet port of the flow guide cylinder. According to the centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in the aeronautic technique, the gas is directly compressed by virtue of an aeronautic spiral blade technique, the efficiency of the motor directly acts on the gas production, the utilized power is small, the produced gas is more, so that the efficiency is high, the structure is simple, and a great quantity of lubricating oil is saved; and furthermore, the quantity of the produced air is large and the wind power is centralized.
Description
Technical field
The utility model relates to a kind of new-type air compressor, aeronautical technology is introduced directly on the air compressor, with helical blade and air compressor combination, utilize the aviation pneumatic principle, directly gas is compressed, particularly, relate to aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor.
Background technique
Present various air compressing engine efficiency is low, and big energy-consuming adopts a large amount of oil lubrication, and lubrication oil consumption is a lot, processed complex, the processing technology difficulty, complex structure, stock utilization is low, and waste is large, working life is short, and assembling is complicated, and the Frequent Accidents rate is many, needs for a long time maintenance.
Summary of the invention
For defective of the prior art, the purpose of this utility model provides a kind of aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor.
According to an aspect of the present utility model, a kind of aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor is provided, comprise guide shell, compression main frame, gear couplings cylinder, motor, spiral circle cone, wherein, described motor connects described compression main frame by described gear couplings cylinder, described guide shell connects the host housing of described compression main frame, the shape of described host housing is cylindrical, the shape of described guide shell is tapered, and described spiral circle cone is installed in the main shaft of described compression main frame near an end of described guide shell exhaust outlet.
Preferably, the blade axle bed is installed on the main shaft of described compression main frame, on the described blade axle bed helical blade is installed.
Preferably, described blade axle bed arranges in described main shaft equal intervals.
Preferably, an end of the main shaft of described compression main frame is installed in the clutch shaft bearing on the described compression main frame, the other end is installed in the bearing pack on the described gear couplings cylinder.
Preferably, described gear couplings cylinder comprises coupling, driving shaft and driving gear set, and wherein, the motor shaft of described motor connects described driving shaft by described coupling, and described driving shaft connects described main shaft by described driving gear set.
Preferably, described driving gear set is for increasing several gear trains, and described bearing pack comprises the second bearing and tapered roller bearing.
Preferably, described gear couplings cylinder comprises gear cap, and sealed member group, described gear cap and described gear couplings cylinder are equipped with the casing of the sidewall formation gear-box of described bearing pack, described gear cap is gear-box inner space and coupling holding space with the spatial separation in the described gear couplings cylinder, described driving gear set is positioned at described gear-box inner space, described coupling is positioned at described coupling holding space, described gear-box inner space is inner by described sealed member group and described host housing, described coupling holding space phase seal isolation is provided with oil connection on the described gear-box.
Preferably, described sealed member group comprises the first seal ring, end ring, the 4th seal ring and the 3rd seal ring, wherein, described end ring connects described bearing pack, described the first seal ring is installed in the described end ring, described the 4th seal ring is installed in the contacting point of described gear cap and driving shaft, and described the 3rd seal ring is installed in the contacting point of the sidewall of described gear cap and described gear couplings cylinder.
Preferably, also comprise fuel tank, circuit control device, also comprise the oil pump, oil inlet pipe, the return tube that connect described fuel tank, wherein, described oil inlet pipe is connected described oil connection with return tube, and described circuit control device connects described motor.
Preferably, described coupling comprises main shaft half-coupling, shock absorber, motor half-coupling, nose key key pin and key pin, wherein, one end of described driving shaft is installed described main shaft half-coupling also with described taper key finger setting, the end that the motor shaft of described motor stretches in the described gear couplings cylinder is installed described motor half-coupling, and described main shaft half-coupling is connected with the motor half-coupling by shock absorber.
Particularly, before the air compressor main machine shell, guide shell is installed, bearing is installed in host housing, bearing baffle, O shape rubber seal, rubber rectangular ring, at bearing baffle seal ring is installed, at bearing main shaft one end is installed, the main shaft the other end is installed on the bearing of gear couplings cylinder, at main shaft nut is installed, the blade axle bed, flat key, packing ring, driven gear, at blade seat plain washer is housed, bolt, helical blade, the host housing the other end is connected with the gear couplings cylinder, fix with bolt, in the gear couplings cylinder, bearing is installed, seal ring, end ring, seal ring is installed in end ring, bolt, in the gear couplings cylinder, bearing is installed, driving shaft, driving gear, gear cap, bolt, flat key, seal ring, gear cap, in gear cap seal ring is installed, bolt, at gear couplings cylinder shell oil connection is installed, at driving shaft bearing is installed, eave tile wedge key pin, the main shaft half-coupling, the main shaft half-coupling is connected with the motor half-coupling by shock absorber, the motor half-coupling is installed on the motor main shaft, locate with flat key, motor is equipped with bolt at half-coupling and is used for locking control motor half-coupling and moves, be connected with motor wheel of the law dish at the gear couplings cylinder the other end, fix with bolt, motor mounting is on the motor cabinet assembly, connect with bolt assembly, motor leads is connected with circuit control device, oil pump is installed on the fuel tank, fuel tank is placed on the tank support, and the oil inlet pipe on the fuel tank is connected with the outer oil connection of return tube and gear couplings cylinder.
In order to overcome existing air compressor backward technology, reduce high energy consumption, the aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor that the utility model provides, adopt advanced aeronautical technology, helical blade and air compressor are combined, utilize helical blade curve principle, adopt best fluid mechanics, best combination, the distance minute identical in each disk cross section installed several helical blades, at every air compressor the disk of several helical blades is installed, and minute progression carries out air compressing, the diameter of each disk can be the same, also can be different, directly drive with motor and motor car engine, adopt one group to increase several gears, improve revolution, compress more air, compress larger air pressure, the power consumption of aeronautical technology spiral vane air compressor is few, do not adopt a large amount of oil lubrication, only adopt lubrication oil circulation at gear and bearing place lubricated, consumes oil seldom, raises the efficiency significantly, the saving energy is obvious, and is very considerable aspect saving lubricant oil.
The beneficial effects of the utility model are, compact structure, and volume is little, compare with the air compressor of existing equal-wattage, efficient improves several times and higher, and lubrication oil consumption is very low, process easy, technique is simple, and stock utilization is high, and processing technology is simple, easy for installation, do not have easily damaged parts, life cycle is long, need not keep in repair.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:
The overall master that Fig. 1 illustrates according to aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor of the present utility model looks sectional view and rear view;
Fig. 2 illustrates the partial structurtes enlarged view of I part among Fig. 1;
Fig. 3 illustrates the partial structurtes enlarged view of II part among Fig. 1;
Fig. 4 illustrates the partial structurtes enlarged view of III part among Fig. 1;
Fig. 5 illustrates the partial structurtes enlarged view of IV part among Fig. 1;
Fig. 6 illustrates the backsight sectional view according to aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor of the present utility model;
Fig. 7 illustrates the structural representation according to helical blade set in the aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor of the present utility model;
Fig. 8 illustrates the structural representation according to aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor middle gear of the present utility model.
Among the figure: 1, guide shell, 2, main shaft, 3, nut, 4, the first bolt, 5, the first plain washer, 6, the blade axle bed, 7, the second plain washer, 8, O shape rubber seal, 9, rubber rectangular ring, 10, bearing baffle, 11, clutch shaft bearing, 12, the first nut, 13, the 3rd plain washer, 14, the second bolt, 15, packing ring, 16, the first flat key, 17, helical blade, 18, host housing, 19, the first seal ring, 20, the second bearing, 21, the 3rd bolt, 22, end ring, 23, Siping City's packing ring, 24, the 4th bolt, 25, the second seal ring, 26, bolt assembly, 27, the 3rd bearing, 28, oil connection, 29, the 3rd seal ring, 30, the 4th bolt, 31, gear cap, 32, bearing support, 33, the 7th bolt, 34, driving gear, 35, the second flat key, 36, the 4th bearing, 37, the 4th seal ring, 38, the gear couplings cylinder, 39, the main shaft half-coupling, 40, the nose key key pin, 41, shock absorber, 42, the 5th bolt, 43, the motor cabinet assembly, 44, the 6th bolt, 45, the motor half-coupling, 46, key pin, 47, driving shaft, 48, motor shaft, 49, the second nut, 50, tapered roller bearing, 51, driven gear, 52, the 3rd nut, 53, motor, 54, motor leads, 56, circuit control device, 57, oil pump, 58, fuel tank, 59, tank support, 60, oil inlet pipe, 61, return tube, 62, the spiral circle cone.
Embodiment
The aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor that provides according to the utility model, as shown in Figure 1, comprise guide shell, compression main frame, gear couplings cylinder, motor, spiral circle cone 62, wherein, described motor connects described compression main frame by described gear couplings cylinder, described guide shell connects the host housing of described compression main frame, the shape of described host housing is cylindrical, the shape of described guide shell is tapered, and described spiral circle cone is installed in the main shaft of described compression main frame near an end of described guide shell exhaust outlet.Wherein, the shape of described host housing is cylindrical to produce air quantity large, the tapered so that wind concentration of the shape of described guide shell, described spiral circle cone increase gas compression than and produce air quantity.
As shown in Figure 2, the blade axle bed is installed on the main shaft of described compression main frame, on the described blade axle bed helical blade is installed.Described blade axle bed arranges in described main shaft equal intervals.One end of the main shaft of described compression main frame is installed in the clutch shaft bearing on the described compression main frame, the other end is installed in the bearing pack on the described gear couplings cylinder.
As shown in Figure 3 and Figure 4, described gear couplings cylinder comprises coupling, driving shaft and driving gear set, and wherein, the motor shaft of described motor connects described driving shaft by described coupling, and described driving shaft connects described main shaft by described driving gear set.Preferably, described driving gear set is for increasing several gear trains, and described bearing pack comprises the second bearing and tapered roller bearing.
More specifically, described gear couplings cylinder comprises gear cap, and sealed member group, described gear cap and described gear couplings cylinder are equipped with the casing of the sidewall formation gear-box of described bearing pack, described gear cap is gear-box inner space 1801 and coupling holding space 1802 with the spatial separation in the described gear couplings cylinder, described driving gear set is positioned at described gear-box inner space, described coupling is positioned at described coupling holding space, described gear-box inner space is inner by described sealed member group and described host housing, described coupling holding space phase seal isolation is provided with oil connection on the described gear-box.
Described sealed member group preferably includes the first seal ring, end ring, the 4th seal ring and the 3rd seal ring, wherein, described end ring connects described bearing pack, described the first seal ring is installed in the described end ring, described the 4th seal ring is installed in the contacting point of described gear cap and driving shaft, and described the 3rd seal ring is installed in the contacting point of the sidewall of described gear cap and described gear couplings cylinder.
Further, as shown in Figure 5 and Figure 6, described aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor also comprises fuel tank, circuit control device, also comprise the oil pump, oil inlet pipe, the return tube that connect described fuel tank, wherein, described oil inlet pipe is connected described oil connection with return tube, described circuit control device connects described motor.Described coupling comprises main shaft half-coupling, shock absorber, motor half-coupling, nose key key pin and key pin, wherein, one end of described driving shaft is installed described main shaft half-coupling also with described taper key finger setting, the end that the motor shaft of described motor stretches in the described gear couplings cylinder is installed described motor half-coupling, and described main shaft half-coupling is connected with the motor half-coupling by shock absorber.
In a preference of present embodiment, guide shell 1 is connected with host housing 18 and is fixing with bolt assembly 26, at host housing 18 oil connection 28 is installed, oil connection 28 is connected with oil inlet pipe 60 and return tube 61, oil inlet pipe 60 is connected with oil pump 57, return tube 61 the other ends are connected with fuel tank 58, by such cyclic process that is connected to form, lubricant oil passes through operation of oil pump, lubricant oil is delivered in the gear-box, lubricated for driving gear 34, driven gear 51, the second bearing 20, the 3rd bearing 27, the 4th bearing 36, tapered roller bearing 50 coolings.8 sealings of clutch shaft bearing 11 usefulness O shape rubber seal are installed in host housing 18; at clutch shaft bearing 11 1 ends bearing baffle 10 usefulness bolts being installed fixes; rubber rectangular ring 9 sealings are arranged in bearing baffle 10; main shaft 2 one ends are installed in clutch shaft bearing 11; main shaft 2 the other ends are installed in the second bearing 20 on the gear couplings cylinder 38; in the tapered roller bearing 50; main shaft 2 in host housing 18 is equipped with the first flat key 16 and is used for locating blade axle bed 6; packing ring 15 is used for fixing the position of helical blade 17 on blade axle bed 6; packing ring 15 setting screw blades 17 are on blade axle bed 6; the first plain washer 5; the second plain washer 7; the 3rd plain washer 13; Siping City's packing ring 23 usefulness the first bolt 4; the second bolt 14; the 3rd bolt 21 is fixed on helical blade 17 on the blade axle bed 6; on the main shaft 2 in the gear couplings cylinder 38 driven gear 51 is installed; fixing with the 3rd nut 52; it is at the 3rd bearing 27 interior installation driving shafts 47 of gear couplings cylinder 38; with the 4th bearing 36 and bearing support 32 location; fixing with the 7th bolt 33 again; the 3rd bearing 27 on driving shaft 47; in the middle of the 4th bearing 36 driving gear 34 is installed; driving gear 34 and driven gear 51 are by the combination of two teeth; form a machine driven system; gear cap 31 is installed in gear couplings cylinder 38; seal with the 4th seal ring 37 at driving shaft 47 places; seal with the 3rd seal ring 29 at gear couplings cylinder 38 inner joints; do not ooze dew with the 4th bolt 30 fixing tight protection lubricant oil again; at driving shaft 47 1 ends main shaft half-coupling 39 is installed; with nose key key pin 40 location; tighten with the second nut 49 again; the position of fixed main shaft half-coupling 39; be connected with another motor half-coupling 45 by shock absorber 41; motor half-coupling 45 is installed on the motor shaft 48; with key pin 46 location; tightening with the 6th bolt 44; gear couplings cylinder 38 1 ends are connected with bolt assembly with flange plate on the motor 53 to be fixed; motor 53 is installed on the motor cabinet assembly 43; fixing with the 5th bolt 42; motor leads 54 is connected with circuit control device 56; power line A on the circuit control device 56; B is connected to motor 53 with external power provides electric power; provide stable power supply to make motor 53 normal operations can for motor 53 by circuit control device 56; make its rotation with linking of driven gear 51 teeth after driving gear 34 rotations on the driving shaft 47; drive main shaft 2 rotations, the helical blade 17 that is installed on the blade axle bed 6 also and then rotates the powerful air-flow of generation.
One of benefit of the utility model aeronautical technology spiral vane air compressor maximum is, adopt the direct pressurized gas of aviation helical blade technology, the efficient of motor acts directly on to be made on the gas, the power that uses is little, the gas of making is many, so efficient is high, simple in structure, oil lubrication is saved the energy in a large number.
More than specific embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present utility model.
Claims (10)
1. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor, it is characterized in that, comprise guide shell, compression main frame, gear couplings cylinder, motor, spiral circle cone, wherein, described motor connects described compression main frame by described gear couplings cylinder, described guide shell connects the host housing of described compression main frame, the shape of described host housing is cylindrical, the shape of described guide shell is tapered, and described spiral circle cone is installed in the main shaft of described compression main frame near an end of described guide shell exhaust outlet.
2. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 1 is characterized in that, the blade axle bed is installed on the main shaft of described compression main frame, on the described blade axle bed helical blade is installed.
3. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 2 is characterized in that described blade axle bed arranges in described main shaft equal intervals.
4. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 1, it is characterized in that an end of the main shaft of described compression main frame is installed in the clutch shaft bearing on the described compression main frame, the other end is installed in the bearing pack on the described gear couplings cylinder.
5. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 4, it is characterized in that, described gear couplings cylinder comprises coupling, driving shaft and driving gear set, wherein, the motor shaft of described motor connects described driving shaft by described coupling, and described driving shaft connects described main shaft by described driving gear set.
6. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 5 is characterized in that described driving gear set is for increasing several gear trains, and described bearing pack comprises the second bearing and tapered roller bearing.
7. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 5, it is characterized in that, described gear couplings cylinder comprises gear cap, and sealed member group, described gear cap and described gear couplings cylinder are equipped with the casing of the sidewall formation gear-box of described bearing pack, described gear cap is gear-box inner space and coupling holding space with the spatial separation in the described gear couplings cylinder, described driving gear set is positioned at described gear-box inner space, described coupling is positioned at described coupling holding space, described gear-box inner space is inner by described sealed member group and described host housing, described coupling holding space phase seal isolation is provided with oil connection on the described gear-box.
8. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 7, it is characterized in that, described sealed member group comprises the first seal ring, end ring, the 4th seal ring and the 3rd seal ring, wherein, described end ring connects described bearing pack, described the first seal ring is installed in the described end ring, described the 4th seal ring is installed in the contacting point of described gear cap and driving shaft, and described the 3rd seal ring is installed in the contacting point of the sidewall of described gear cap and described gear couplings cylinder.
9. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 7, it is characterized in that, also comprise fuel tank, circuit control device, also comprise the oil pump, oil inlet pipe, the return tube that connect described fuel tank, wherein, described oil inlet pipe is connected described oil connection with return tube, described circuit control device connects described motor.
10. aeronautical technology wind concentration type high yield wind cylinder cover spiral vane air compressor according to claim 5, it is characterized in that, described coupling comprises main shaft half-coupling, shock absorber, motor half-coupling, nose key key pin and key pin, wherein, one end of described driving shaft is installed described main shaft half-coupling also with described taper key finger setting, the end that the motor shaft of described motor stretches in the described gear couplings cylinder is installed described motor half-coupling, and described main shaft half-coupling is connected with the motor half-coupling by shock absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149726 CN202646043U (en) | 2012-04-11 | 2012-04-11 | Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149726 CN202646043U (en) | 2012-04-11 | 2012-04-11 | Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646043U true CN202646043U (en) | 2013-01-02 |
Family
ID=47415160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220149726 Expired - Fee Related CN202646043U (en) | 2012-04-11 | 2012-04-11 | Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646043U (en) |
-
2012
- 2012-04-11 CN CN 201220149726 patent/CN202646043U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202579057U (en) | Step-up gear box of high-power wind driven generator | |
| CN201916218U (en) | Gear type air compressor for PTA (pure terephthalic acid) device | |
| CN203594474U (en) | Pneumatic motor with rotation impeller | |
| CN105840242A (en) | Compressed air self-supplying engine and method | |
| CN202040282U (en) | Speedup gear box for high-power wind generator | |
| CN201330619Y (en) | Industrial exhaust heat steam and pneumatic helical engine | |
| CN202646049U (en) | Wind force centralized high air yield air compressor with step casing and spiral vanes in aviation technology | |
| CN202646039U (en) | Aeronautic technology wind-centralized cylinder shell screw blade air compressor | |
| CN202646047U (en) | Aeromechanics wind-centralized drainage step casing helical blade air compressor | |
| CN202646043U (en) | Centralized wind-power type high-wind-yield cylinder housing screw blade air compressor in aeronautic technique | |
| CN202646056U (en) | Aeronautic technology wind-centralized reflux-control cylinder shell screw blade air compressor | |
| CN202646057U (en) | Wind power centralized type flow guiding air compressor adopting aeronautic technology and provided with cylindrical shell and spiral blades | |
| CN202646058U (en) | Aviation-technology large wind power type high-yield wind cylindrical barrel shell screw blade air compressor | |
| CN202646054U (en) | Wind power centralized type high-air-yield conical shell helical blade air compressor using aviation technology | |
| CN202646055U (en) | Wind-power concentrated drainage conical shell helical blade air compressor for aerotechnics | |
| CN202646059U (en) | Aviation technology drainage cylinder casing helical blade air compressor | |
| CN202646048U (en) | Aeronautic technology high-efficiency wind step shell screw blade air compressor | |
| CN202646050U (en) | High-wind-power type high-air-yield conical shell helical blade air compressor using aviation technology | |
| CN202646053U (en) | Aerotechnics wind-concentrated reflux-controlled conical-shell helical blade air compressor | |
| CN202646046U (en) | Air compressor with drainage step shell and spiral blades in aviation technology | |
| CN202646052U (en) | Aerotechnics wind power centralized conical cylinder shell helical blade air compressor | |
| CN202646051U (en) | Aviation-technology large wind power type drainage conical barrel shell screw blade air compressor | |
| CN202646044U (en) | Aeronautic technology wind-centralized reflux-control step shell screw blade air compressor | |
| CN202646045U (en) | Big wind power type drainage step shell spiral blade air compressor in aeronautic technology | |
| CN202301025U (en) | Roots compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |