CN104081051A - Pump - Google Patents
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- Publication number
- CN104081051A CN104081051A CN201380006780.4A CN201380006780A CN104081051A CN 104081051 A CN104081051 A CN 104081051A CN 201380006780 A CN201380006780 A CN 201380006780A CN 104081051 A CN104081051 A CN 104081051A
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- CN
- China
- Prior art keywords
- pump
- torque
- bearing
- axle
- core shift
- 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
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Classifications
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
[Problem] To provide is a pump with excellent durability. [Solution] In this pump (1), an eccentric shaft (232) which converts rotation of the drive shaft (131) of a motor (M) into reciprocating motion of a piston (21) has a hollow structure. By making the eccentric shaft (232) a hollow structure, the eccentric shaft (232) can easily deform perpendicularly to the axis of the eccentric shaft (232) (radially), and the press-fit load of a bearing (31) on the outer peripheral surface of the eccentric axis (232) can be reduced. By this means, variation of the inner radial gap of the bearing (31) is reduced, stress is more uniform over the entire circumference of the bearing, and the bearing (31) is more durable, prolonging the life of the pump (1).
Description
Technical field
The present invention relates to a kind of pump-unit, its gas that to-and-fro motion by piston sucks, excavationg pump is indoor.
Background technique
People are known as a kind of reciprocating pump that shakes of vacuum pump, and it is by reciprocating piston in cylinder, carry out alternately the reciprocating pump of the air-breathing and exhaust of pump indoor gas, and it is widely used as for example vacuum pump and compression pump.
This pump has following mechanism: motor; Torque-transmitting axle, its rotating center with respect to the live axle of this motor is configured by core shift; Connecting rod, it is connected with piston; Bearing, it is pressed into the outer circumferential face of torque-transmitting axle, and in the mode that can rotate, torque-transmitting axle is connected on connecting rod, the revolution motion of the torque-transmitting axle centered by live axle is converted to the to-and-fro motion (for example, with reference to following patent documentation 1) of piston.
No. 2002-364543, [patent documentation 1] Japanese patent of invention Publication JP
But because torque-transmitting axle of the prior art is solid mechanism, thus bearing to be pressed into the load of outer peripheral portion of torque-transmitting axle large, cause being difficult to upwards with uniform stress, bearing being installed in week.As a result, be pressed into after bearing, it is large that the deviation in the inner radial gap of bearing (gap between foreign steamer and interior wheel) becomes, and is difficult to realize the homogenization of all-round stress.The load often being changed due to the running middle (center) bearing at pump, the durability that therefore produces bearing is low, the low problem of life-span of pump.
Summary of the invention
In view of the foregoing, the object of the present invention is to provide the pump-unit that a kind of durability is good.
In order to achieve the above object, the related pump-unit of one embodiment of the present invention has piston, pump case, motor, core shift parts, linkage component and the 1st bearing.
Described pump case has receives the cylinder that fills described piston.
Described motor has live axle, and is fixed in described pump case.
Described core shift parts are connected on described live axle, and have the hollow torque-transmitting axle with respect to the rotating center core shift formation of described live axle.
Described linkage component has: the 1st end, and it is connected with described piston; The 2nd end, it is formed with the embedding hole of chimeric described torque-transmitting axle; And described linkage component converts the rotation of described live axle to the to-and-fro motion of the described piston of described cylinder interior.
Described the 1st bearing is installed between described torque-transmitting axle and described embedding hole, and it supports torque-transmitting axle and torque-transmitting axle can be rotated with respect to linkage component.
Accompanying drawing explanation
Fig. 1 means the stereogram of the pump-unit integral body that one embodiment of the present invention are related.
Fig. 2 is the longitudinal section of the major component of described pump-unit.
Fig. 3 means the sectional arrangement drawing of the connecting rod of described pump-unit and the annexation of core shift parts.
Fig. 4 means the stereogram of the connecting rod of described pump-unit and the annexation of core shift parts.
Fig. 5 is the plan view of described core shift parts.
Fig. 6 is the sectional arrangement drawing of described core shift parts.
Fig. 7 is the stereogram of described core shift parts.
Fig. 8 is the stereogram of the related core shift parts of comparison cases.
Fig. 9 means a kind of experimental result of bearing feature of the pump-unit of the core shift parts with present embodiment.
Embodiment
The related pump-unit of one embodiment of the present invention has piston, pump case, motor, core shift parts, linkage component and the 1st bearing.
Described pump case has receives the cylinder that fills described piston.
Described motor has live axle, and is fixed in described pump case.
Described core shift parts are connected on described live axle, and have the hollow torque-transmitting axle with respect to the rotating center core shift formation of described live axle.
Described linkage component has: the 1st end, and it is connected with described piston; The 2nd end, it is formed with the embedding hole of chimeric described torque-transmitting axle.And described linkage component converts the rotation of described live axle to the to-and-fro motion of the described piston of described cylinder interior.
Described the 1st bearing is installed between described torque-transmitting axle and described embedding hole, and it supports torque-transmitting axle and torque-transmitting axle is rotated with respect to linkage component.
Because the torque-transmitting axle of described pump-unit has hollow mechanism, so torque-transmitting axle is easily created in the distortion in the direction (radially) perpendicular to axis, can alleviate the load that the 1st bearing is pressed into torque-transmitting axle outer circumferential face.So, can reduce the deviation in the inner radial gap of the 1st bearing, also can improve the uniformity of the all-round stress of bearing.Therefore,, if adopt described pump-unit, can improve the durability of the 1st bearing, the life-span that also can improve pump-unit.
Described core shift parts also have base block, and this base block has: the 1st, be formed with the attachment hole being connected with described live axle above it; The 2nd, above it, be formed with described torque-transmitting axle.
So, can improve the assembling operation of live axle and linkage component, also can shorten the length of the live axle of motor.
The pump-unit of described mechanism also can have the 2nd bearing, and it is fixed in described pump case, and can support the rotation of described live axle.
As mentioned above, shorten the live axle of motor, the load that is applied to the 2nd bearing part that supports described live axle is alleviated, so can further improve the life-span of pump-unit.
Described core shift parts also can consist of sintering body.
So, can stably obtain accuracy to shape good, and there are the core shift parts of necessary mechanical strength.
Described pump-unit also have be arranged on described core shift parts and with the counterweight of the common rotation of described core shift parts.
So, can suppress the vibration that motor rotation produces, can guarantee that pump-unit carries out stable air-breathing, exhaust action simultaneously.
Next, with reference to the accompanying drawings of embodiments of the present invention.
Fig. 1 is the stereogram of the related pump-unit integral body of one embodiment of the present invention.
The pump-unit 1 of present embodiment has: the 1st pump portion 11; The 2nd pump portion 12; Drive portion 13, it drives the 1st pump portion 11 and the 2nd pump portion 12 simultaneously.
The 1st pump portion 11 and the 2nd pump portion 12 are respectively compression pump (booster pump) and vacuum pump, and two pump portions 11,12 can be vacuum pump, also can be compression pump (booster pump).Pump-unit 1 can be used as such as booster fan of the gas in fuel cell system etc. and uses.
The 1st pump portion 11 and the 2nd pump portion 12 typically have same mechanism, are in the present embodiment and shake reciprocating pump.In addition, the 1st pump portion 11 and the 2nd pump portion 12 also can be other reciprocating pumps such as diaphragm pump.
Pump-unit 1 has pump case 100, and pump case 100 comprises: the 1st hood 101, and it forms a part for the 1st pump portion 11; The 2nd hood 102, it forms a part for the 2nd pump portion 12; The 3rd hood 103, it forms a part for drive portion 13.
Fig. 2 is the longitudinal section of a part of mechanism of the 1st pump portion 11 and drive portion 13.In Fig. 2, X-axis, Y-axis and Z axis are respectively 3 axle direction of quadrature.In addition, because the 2nd pump portion 12 is identical with the mechanism of the 1st pump portion 11, therefore the 1st pump portion 11 is mainly described here.
The 1st pump portion 11 has: the 1st hood 101, piston 21, connecting rod 22 (linkage component), core shift parts 23.
The 1st hood 101 has pump case main body 110, cylinder 111, pump head 112 and pump head lid 113.Pump case main body 110, cylinder 111, pump head 112 and pump head lid 113 are with the mode overlapping each other in the Z-direction mechanism that forms as one.
Pump case main body 110 is connected with the 3rd hood 103 of receiving dress motor M, and has the through hole 110h being run through by connecting rod 22.Pump case main body 110 has: fixing part 110a, and it is fixed with the bearing 32 (the 2nd bearing) of live axle 131 rotations that can supporting motor M; The 110b of cylinder portion, it receives the coil 132 of dress motor M.Bearing 32 is configured between the main body and core shift parts 23 of motor M.
Cylinder 111 is configured between pump case main body 110 and pump head 112, and dress piston 21 is received in the mode that can be free to slide along Z-direction by portion within it.Pump head 112 is configured between cylinder 111 and pump head lid 113, has respectively Aspirating valves 112a and outlet valve 112b.Pump head lid 113 is configured on pump head 112, and inside has induction chamber 113a, and it is connected with intakeport 114a; Exhaust chamber 113b, it is connected with relief opening 114b.As shown in Figure 1, intakeport 114a and relief opening 114b are separately positioned on each pump portion 11,12 side in opposite directions.
Piston 21 is discoideus, is fixed on the 1st end 221 of connecting rod 22 by screw component 25.Piston 21 forms pump chamber 26 between this piston 21 and pump head 112.Piston 21 moves back and forth along the parallel direction of the Z-direction with cylinder 111 inside, by Aspirating valves 112a and outlet valve 112b, sucks alternately and discharges the gas in pump chamber 26, brings into play the effect of predetermined pump.
Fig. 3 and Fig. 4 mean sectional arrangement drawing and the stereogram of the coupled condition of connecting rod 22 and core shift parts 23.
Connecting rod 22 is connected to each other piston 21 and core shift parts 23.Connecting rod 22 has: the 1st end 221, and it is connected with piston 21; The 2nd end 222, it is connected with core shift parts 23.The 1st end 221 forms the circle roughly the same with piston 21 diameters.Between these pistons 21 and the 1st end 221, discoideus sealed member 24 is installed.The peripheral portion of sealed member 24, in the mode of inner peripheral surface that can sliding contact cylinder 111, is folded into pump chamber 26 1 sides.
In addition, in the 2nd pump portion of vacuum pump structure, the peripheral portion of described sealed member is folded into the opposition side of pump chamber side.
On the 2nd end 222 of connecting rod 22, be formed with the embedding hole 222a of the torque-transmitting axle 232 of chimeric core shift parts 23.Bearing 31 (the 1st bearing) is installed in embedding hole 222a, and it can support torque-transmitting axle 232, and it is rotated freely.
Fig. 5 is that Fig. 6 is the sectional drawing of the A-A line direction in Fig. 5 from the plan view of the core shift parts 23 of Y direction observation, and Fig. 7 is the stereogram of core shift parts 23.
Core shift parts 23 are connected to each other live axle 131 and the connecting rod 22 of the motor M of the interior receipts dress of the 3rd hood 103.Base block 230 has roughly cylindrical base block 230.
Base block 230 has: the 1st 230a, is formed with the attachment hole 231 being connected with live axle 131 above it; The 2nd 230b, is formed with torque-transmitting axle 232 above it.Core shift parts 23 and torque-transmitting axle 232 mechanism that forms as one, in the present embodiment, consists of the sintering body of metallic dust, ceramic powder or both mixed-powders.In the present embodiment, base block 230 is used iron powder class material as dusty material.
Attachment hole 231 is that central part circular that is formed at the 1st 230a of base block 230 has bottom outlet.Live axle 131 is inserted in attachment hole 231 along Y direction, and the set screw 41 being threaded by the 1st screw hole H1 forming on the lateral circle surface with in base block 230, is connected with attachment hole 231.
On the 2nd 230b of base block 230, with respect to rotating center (core shift parts 23 center) the core shift formation torque-transmitting axle 232 of live axle 131.Torque-transmitting axle 232 is and has the cylindric of hollow part 232a.The wall thickness of torque-transmitting axle 232 is suitably set according to the size of the kind of pump and load, and wall thickness is for example 0.1～0.2 with respect to the ratio of the external diameter of torque-transmitting axle 232.
Bearing 31 is installed between torque-transmitting axle 232 and the embedding hole 222a of connecting rod 22, and it supports torque-transmitting axle 232 and torque-transmitting axle 232 can be rotated with respect to connecting rod 22.Bearing 31,32 is by the circular ball bearing formation that has interior wheel (inner ring), foreign steamer (outer ring) and enclose a plurality of solid of rotation (ball) between the two.In bearing 31, inside take turns 31a and be fixed by being pressed into the outer circumferential face of torque-transmitting axle 232, foreign steamer 31b is fixed by being pressed into the inner peripheral surface of embedding hole 222a, and in these, takes turns between 31a and foreign steamer 31b and receive a plurality of solid of rotation 31c are housed.
The 1st pump portion 11 also has counterweight 50.By the 2nd screw hole H2 that makes set screw 42 be threaded and form on the lateral circle surface of base block 230, counterweight 50 is fixed on the side perimembranous of core shift parts 23.Because counterweight 50 can be eliminated and follows the vibration when torque-transmitting axle 232 rotates of connecting rod 22 that the rotation of live axle 131 produces around, so counterweight 50 is configured in the rightabout position of being partial to the core shift direction of torque-transmitting axle 232 with respect to live axle 131.
The 2nd pump portion 12 is identical with the structure of the 1st pump portion 11.The 2nd pump portion 12 is driven by identical motor M with the 1st pump portion 11 simultaneously.Live axle 131 also extends to the 2nd pump portion 12 1 sides, is connected with the torque-transmitting axle (omitting diagram) of the 2nd pump portion 12.In the present embodiment, the 1st pump portion 11 and the 2nd pump portion 12 are driven in different phase places.For example, the torque-transmitting axle of each pump portion 11,12 is set, while making the piston 21 of the 1st pump portion 11 be positioned at top dead center, the piston of the 2nd pump portion 12 is positioned at lower dead center.
Next, the as above action of the pump-unit 1 of the present embodiment of structure is described.Here, the center that act as with the 1st pump portion 11 describes.
Motor M drives core shift parts 23 in surrounding's rotation of live axle 131, and torque-transmitting axle 232 is along the circumference with the radius corresponding with core shift amount with respect to live axle 131, in surrounding's revolution of live axle 131.The connecting rod 22 that is connected to torque-transmitting axle 232 is converted to the rotation of live axle 131 to-and-fro motion of the piston 21 of cylinder 111 inside.That is,, in Fig. 2, piston 21 is when the inside of cylinder 111 is shaken along X-axis direction, also along Z-direction to-and-fro motion.So, by carrying out alternately the air-breathing and exhaust of pump chamber 26, can obtain the predetermined boosting that the 1st pump portion 11 produces.On the other hand, the 2nd pump portion 12 also can obtain predetermined vacuum exhaust effect.
During pump device 1, be arranged on the load that the bearing 31 between torque-transmitting axle 232 and connecting rod 2 is changed when work here.The durability that improves this bearing 31 had a great impact for the life-span of pump-unit 1.Inside take turns and foreign steamer between the deviation in all-round gap (bearing inner radial gap) larger, the change that is applied to the load on bearing 31 is larger.Therefore,, in order to improve the durability of bearing, must reduce the deviation in described gap.
Case as a comparison, Fig. 8 represents the formation case of the core shift parts in the pump-unit of existing structure.The torque-transmitting axle 71 of the core shift parts 70 that this comparison cases is related has solid cylindrical configurations.If the interior wheel of bearing is pressed into and is fixed on this torque-transmitting axle 71, bearing is pressed into the load increase of the outer peripheral portion of torque-transmitting axle 71, is difficult to uniform stress, bearing is installed at circumferencial direction.As a result, be pressed into after bearing, it is large that the deviation of the radial clearance of bearing inside becomes, and is difficult to realize the homogenization of all-round stress.In addition, in order to reduce this deviation, even if turning, grinding torque-transmitting axle 71, with for example 10/1000 Numerical implementation tolerance management, also cannot improve fully.
In contrast, in the pump-unit 1 of present embodiment, because torque-transmitting axle 232 has hollow mechanism, therefore torque-transmitting axle 232 is easily created in the distortion in the direction (radially) perpendicular to axis, also can alleviate the load that bearing 31 is pressed into torque-transmitting axle 232 outer circumferential faces, reduce the power that makes the side expansion of Nei Lun31aXiang diameter foreign side.So can reduce the deviation in the inner radial gap of bearing 31, improve the uniformity of the all-round stress of bearing 31.
Fig. 9 represents the inner radial gap (transverse axis) of bearing and the relation between the life-span (longitudinal axis) of bearing, is the torque-transmitting axle of more solid mechanism and the torque-transmitting axle of hollow mechanism and a kind of experimental result of representing.The life-span of the longitudinal axis (Life Ratio) is to take the relative value in the life-span that situation that inner radial gap (Radial clearance) is reference value (0.000) is standard, the polarity of transverse axis numerical value for just, is negative in the situation that being greater than reference value in the situation that being less than reference value.
As shown in Figure 9, reference value is departed from inner radial gap, and the life-span is shorter, when particularly the gap between interior wheel and foreign steamer is less than reference value and is greater than reference value, compares, and the low rate in life-span is larger.Shown thus when torque-transmitting axle is pressed into bearing, inside taken turns the pressure being subject to diameter foreign side side larger, larger on the impact of bearing life.
C1 in Fig. 9 represents the deviation in bearing inner radial gap of the torque-transmitting axle of the solid mechanism that comparison cases is related, and C2 represents the deviation in bearing inner radial gap of the torque-transmitting axle of the hollow mechanism that present embodiment is related.In addition, L1 represents the deviation of bearing life of the torque-transmitting axle of the solid mechanism that comparison cases is related, and L2 represents the deviation of bearing life of the torque-transmitting axle of the hollow mechanism that present embodiment is related.
As shown in Figure 9, if adopt present embodiment, can reduce the deviation in bearing inner radial gap, also can reduce the pressure stress of the Nei Lunxiang diameter foreign side side while being pressed into, obtain desirable radial clearance.So, owing to can stably guaranteeing desired bearing life, the long-life that therefore can realize pump-unit.
In addition, if adopt present embodiment, because torque-transmitting axle 232 consists of core shift parts 23, and it is independent of live axle 131 and connecting rod 22, therefore can improve the assembling operation of live axle 131 and connecting rod 22, also can shorten the length of live axle 131.Therefore, can reduce the load of bearing 32 supporting driving shafts 131, also can further improve the life-span of pump-unit 1.
In addition, because core shift parts 23 consist of sintering body, therefore can stably obtain accuracy to shape good, and there are the core shift parts 23 of necessary mechanical strength.In addition, can use the multiple material of high melting point material and mutual not solid solution, expand the range of choice of material.
Described above is embodiments of the present invention, but the present invention is not limited to above-mentioned mode of execution, certainly, within not departing from the scope of purport of the present invention, can also carries out various modifications.
For example in the above-described embodiment, for example understand by common drive portion 13 and drive the pump-unit of the 1st pump portions 11 and the 2nd pump portion 12, but be applicable to too to have the pump-unit of single pump portion.
In addition, in the above-described embodiment, core shift parts 23 consist of sintering body, but are not only confined to this, also can consist of cast component or die-cast part.Even if adopt this mechanism, also can dwindle the deviation of the radial clearance of bearing inside, improve the life-span of bearing.
In addition, pump-unit involved in the present invention as above is not limited to and shakes reciprocating pump, is applicable to too other reciprocating pumps such as diaphragm pump.
Symbol description
1: pump-unit; 11: the 1 pump portions; 12: the 2 pump portions; 13: drive portion; 21: piston; 22: connecting rod; 23: core shift parts; 31: bearing; 50: counterweight; 100: pump case; 111: cylinder; 131: live axle; 231: attachment hole; 232: torque-transmitting axle; M: motor
Claims (5)
1. a pump-unit, is characterized in that, has:
Piston;
Pump case, it has receives the cylinder that fills described piston;
Motor, it has live axle, and is fixed in described pump case;
Core shift parts, it is connected on described live axle, and has the hollow torque-transmitting axle with respect to the rotating center core shift formation of described live axle;
Linkage component, it has: the 1st end, it is connected with described piston; The 2nd end, it is formed with the embedding hole of chimeric described torque-transmitting axle; And described linkage component converts the rotation of described live axle to the to-and-fro motion of the described piston of described cylinder interior;
The 1st bearing, it is installed between described torque-transmitting axle and described embedding hole, supports torque-transmitting axle and torque-transmitting axle can be rotated with respect to described linkage component.
2. pump-unit according to claim 1, is characterized in that,
Described core shift parts also have base block, and this base block has: the 1st, be formed with the attachment hole being connected with described live axle above it; The 2nd, above it, be formed with described torque-transmitting axle.
3. pump-unit according to claim 2, is characterized in that,
Also have the 2nd bearing, it is fixed in described pump case, and can support the rotation of described live axle.
4. pump-unit according to claim 2, is characterized in that,
Described core shift parts consist of sintering body.
5. according to the pump-unit described in any one in claim 1～4, it is characterized in that,
Also have be arranged on described core shift parts and with the counterweight of the common rotation of described core shift parts.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-019202 | 2012-01-31 | ||
| JP2012019202 | 2012-01-31 | ||
| PCT/JP2013/000279 WO2013114813A1 (en) | 2012-01-31 | 2013-01-22 | Pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104081051A true CN104081051A (en) | 2014-10-01 |
Family
ID=48904865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380006780.4A Pending CN104081051A (en) | 2012-01-31 | 2013-01-22 | Pump |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPWO2013114813A1 (en) |
| KR (1) | KR20140102753A (en) |
| CN (1) | CN104081051A (en) |
| DE (1) | DE112013000763T5 (en) |
| TW (1) | TW201402946A (en) |
| WO (1) | WO2013114813A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425122A (en) * | 2019-09-05 | 2019-11-08 | 缘循智能科技(上海)有限公司 | A kind of positive/negative-pressure dual-purpose miniature air pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776566B (en) * | 2022-03-28 | 2023-12-15 | 西北核技术研究所 | Low-leakage-rate circulating pump based on multi-cavity variable volume |
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| DE102009054499A1 (en) * | 2008-12-19 | 2010-07-01 | Continental Teves Ag & Co. Ohg | Motor-pump unit |
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2013
- 2013-01-22 DE DE112013000763.0T patent/DE112013000763T5/en not_active Withdrawn
- 2013-01-22 JP JP2013556242A patent/JPWO2013114813A1/en active Pending
- 2013-01-22 CN CN201380006780.4A patent/CN104081051A/en active Pending
- 2013-01-22 KR KR1020147019453A patent/KR20140102753A/en active Search and Examination
- 2013-01-22 WO PCT/JP2013/000279 patent/WO2013114813A1/en active Application Filing
- 2013-01-25 TW TW102102940A patent/TW201402946A/en unknown
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| JPH02275072A (en) * | 1989-04-13 | 1990-11-09 | Matsushita Refrig Co Ltd | Enclosed motor compressor |
| JPH062657A (en) * | 1992-06-19 | 1994-01-11 | Tokico Ltd | Reciprocating machine |
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| CN1908429A (en) * | 2005-08-06 | 2007-02-07 | 三星光州电子株式会社 | Hermetic compressor |
| WO2007126230A1 (en) * | 2006-05-02 | 2007-11-08 | Samsung Gwangju Electronics Co., Ltd. | Hermetic compressor |
| CN101368556A (en) * | 2007-08-16 | 2009-02-18 | 丹佛斯压缩机有限责任公司 | Refrigerant compressor arrangement |
| CN101303006A (en) * | 2008-06-08 | 2008-11-12 | 岑建力 | Portable AC air pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425122A (en) * | 2019-09-05 | 2019-11-08 | 缘循智能科技(上海)有限公司 | A kind of positive/negative-pressure dual-purpose miniature air pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013114813A1 (en) | 2013-08-08 |
| JPWO2013114813A1 (en) | 2015-05-11 |
| KR20140102753A (en) | 2014-08-22 |
| TW201402946A (en) | 2014-01-16 |
| DE112013000763T5 (en) | 2015-08-27 |
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Application publication date: 20141001 |