EP3315782A1 - Pompe à vide - Google Patents

Pompe à vide Download PDF

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Publication number
EP3315782A1
EP3315782A1 EP16382487.3A EP16382487A EP3315782A1 EP 3315782 A1 EP3315782 A1 EP 3315782A1 EP 16382487 A EP16382487 A EP 16382487A EP 3315782 A1 EP3315782 A1 EP 3315782A1
Authority
EP
European Patent Office
Prior art keywords
outlet
point
vane
fluid
virtual
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.)
Withdrawn
Application number
EP16382487.3A
Other languages
German (de)
English (en)
Inventor
Ana MAISTERRA
Jorge TROBAJO
María VILLANUEVA
Javier SANZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Entecnia Consulting SLU
Original Assignee
Entecnia Consulting SLU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Entecnia Consulting SLU filed Critical Entecnia Consulting SLU
Priority to EP16382487.3A priority Critical patent/EP3315782A1/fr
Priority to ES17787196T priority patent/ES2832676T3/es
Priority to CN201780005929.5A priority patent/CN109072924B/zh
Priority to EP17787196.9A priority patent/EP3532731B1/fr
Priority to PCT/EP2017/077133 priority patent/WO2018077859A1/fr
Publication of EP3315782A1 publication Critical patent/EP3315782A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • This invention belongs to the field of vacuum pumps comprising a rotor with one or more vanes inserted in it, the rotor being in turn contained in a vacuum chamber, where subspaces are created between the vane or vanes and the chamber wall when the rotor is moved.
  • Vacuum pumps usually comprise a pump chamber and a rotor housed inside the pump chamber.
  • This rotor comprises one or more slots, so that a vane is at least partially introduced in each one of said slots.
  • the pump chamber houses this rotor, but the inner volume of the pump chamber is greater than the volume occupied by the rotor and the vanes.
  • the vane or vanes have some space to exit the rotor due to centrifugal force or any other force provided in the pump.
  • this inner volume of the vacuum chamber is designed such that the vane or vanes go in and out the rotor alternatively, in such a way that the chambers which are created between two consecutive vanes and the corresponding portion of the chamber wall have a variable volume, depending on the position of the rotor.
  • the slot allows the single vane exiting the rotor in two diametrically opposed locations, so that the vane divides the vacuum chamber in different chambers.
  • a fluid inlet located in the chamber wall is in fluid connection with a device where pressure is intended to be lowered and feeds the vacuum chamber in an inlet point with a compressible fluid, such as air or any other gas.
  • a fluid outlet is in turn located in an outlet point of the chamber wall, and is in fluid connection with an outside fluid zone, such as the atmosphere or a different device. When the pressure in this outlet point is greater than the pressure in the outside fluid zone, fluid exits the chamber.
  • the invention provides a vacuum pump for lowering pressure in a device, the vacuum pump comprising
  • a compression zone is defined in the vacuum chamber, the compression zone being limited by
  • chamber wall includes every surface that limits the vacuum chamber, not only its lateral walls, but also includes the cover or the base of the vacuum chamber.
  • the preceding vane of a first vane is the vane which is more advanced in the advance direction than said first vane, the vane that "sees" the points before than this first vane.
  • the subsequent vane of a first vane is therefore the vane which is more retarded in the advance direction than said first vane, the vane that "sees" the points later than this first vane.
  • This vacuum pump has an improved efficiency with respect to those of the state of the art, since the presence of fluid outlets allows the fluid exit during the first phase of pump operation, avoiding an unnecessary compression of the fluid before its exit through the fluid outlet.
  • the first blocking means in the primary fluid outlet avoids the entering of air into the vacuum chamber and only the secondary fluid outlet allows the exit of fluid without reaching overpressure. Further, the distance between the primary and secondary fluid outlets makes that, although if these blocking means are closed, no high pressure is reached until the fluid volume reaches the secondary fluid outlet.
  • the primary fluid outlet and the secondary fluid outlet are located within the compression zone.
  • the vacuum pump further comprises a final fluid outlet, being located between a first final outlet point of the chamber wall and a second final outlet point of the chamber wall, wherein
  • This final fluid outlet provides an escape way for fluid which is near the minor point.
  • the final fluid outlet comprises final blocking means, adapted for sealing the fluid communication between the final fluid outlet and a third outside fluid zone if the pressure in the final fluid outlet is lower than a third predetermined value.
  • This final blocking means provide an improvement in the efficiency of the vacuum pump.
  • the secondary fluid outlet comprises secondary blocking means adapted for sealing the fluid communication between the secondary fluid outlet and the second outside fluid zone if the pressure in the secondary fluid outlet is lower than a second predetermined value.
  • This secondary blocking means provides an improvement in the efficiency of the vacuum pump.
  • the first and/or the second and/or the third predetermined value may be either a pressure value which may depend on the pressure in the corresponding outside fluid zone or a constant value.
  • the volume of the chamber wall defined by a first virtual outlet vane in contact with the first secondary outlet point and a second virtual outlet vane which is subsequent to the first virtual outlet vane is substantially equal to the volume of the chamber wall defined by a third virtual outlet vane in contact with the second primary outlet point and a fourth virtual outlet vane which is preceding to the third virtual outlet vane.
  • the primary and the secondary fluid outlets are close enough for a first volume comprised between two consecutive vanes not to compress in the time between ceasing being in fluid communication with the primary fluid outlet and starting being in fluid communication with the secondary fluid outlet.
  • the volume of the chamber wall defined by a first virtual outlet vane in contact with the first secondary outlet point and a second virtual outlet vane which is subsequent to the first virtual outlet vane is greater than the volume of the chamber wall defined by a third virtual outlet vane in contact with the second primary outlet point and a fourth virtual outlet vane which is preceding to the third virtual outlet vane.
  • the primary and the secondary fluid outlets are close enough for a first volume comprised between two consecutive vanes to be in fluid communication with both the primary and the secondary fluid outlets at the same time.
  • primary and/or secondary and/or final blocking means comprises a one-way valve.
  • the vacuum pump comprises more than one vane and wherein the angle formed between two consecutive vanes is comprised between 55° and 95°.
  • the vacuum pump comprises 4 or 5 or 6 vanes.
  • the first, the second and the third outlet fluid zones correspond to different zones (open atmosphere, another device, a channel interconnecting some other parts of the vehicle), in other embodiments, at least some of the outlet fluid zones are the same zone.
  • the vacuum pump is deemed to operate with an ideal gas, not taking into account thermal or fluid-dynamic phenomena or state changes in this gas, for the sake of clarity in the explanation of the invention. Some simplifications have been carried out in this sense, without losing the main scope of the invention.
  • FIGS 1 and 2 show a vacuum pump 101 according to the state of the art.
  • This vacuum pump 101 is intended to lower pressure from device 120, and comprises
  • Figure 1 shows the vacuum pump 101 in a first position during operation.
  • a fluid enters the pump chamber 102 through the fluid inlet 105, and is kept in a first volume 110 defined by two consecutive vanes 104, the chamber wall 121 and a portion of the rotor 103. While the rotor rotates, the first volume 110 is made smaller (and the fluid pressure increases), as the portion of the chamber wall 121 which is comprised between the two consecutive vanes 104 limiting the first volume 110 is nearer the rotor 103 as the rotor 103 rotates.
  • Figure 2 shows the vacuum pump 101 in a second position during operation.
  • the pressure of the fluid which is kept in the first volume 110 has increased, as the first volume 110 has been reduced by the rotation of the rotor 103.
  • the first volume 110 reaches the primary outlet point, where the pump chamber 102 comprises the primary fluid outlet 161.
  • This primary fluid outlet 161 is in fluid communication with an outside fluid zone 100. If the pressure of the fluid contained in the first volume 110 is greater than the pressure in the outside fluid zone 100, fluid will exit the first volume 110 when the first volume 110 is put into fluid communication with the outside fluid zone 100, which is achieved by the rotation of the rotor 103, as shown in this second position.
  • FIG. 3 shows a vacuum pump 1 according to the invention.
  • This vacuum pump 1 comprises
  • the distance between the first secondary outlet point 621 and the minor point 22 is lower than the distance between the first primary outlet point 611 and the minor point 22.
  • a volume of the chamber wall defined by a first virtual outlet vane 601 in contact with the first secondary outlet point 621 and a second virtual outlet vane 602 which is subsequent to the first virtual outlet vane 601 is at least the 66% of a volume of the chamber wall defined by a third virtual outlet vane 603 in contact with the second primary outlet point 612 and a fourth virtual outlet vane 604 which is preceding to the third virtual outlet vane 603.
  • this is the same volume, as the point where fluid communication ceases with the primary fluid outlet is the same as the point where fluid communication starts with the secondary fluid outlet. In other embodiments, such as the one shown in figures 4 to 7 , it is even greater, as the volume becomes in fluid communication with the secondary fluid outlet even before fluid communication with the primary fluid outlet ceases.
  • any of the first, second or third predetermined values is the result of summing two terms: a cracking pressure and the pressure in the corresponding outside fluid zone.
  • the cracking pressure is a value which may be positive or negative, but, in absolute value, is usually much smaller than the pressure in the corresponding outside fluid zone.
  • the final result is that the corresponding blocking means remains sealed until the pressure in the corresponding fluid outlet is greater than this sum: the cracking pressure (positive or negative) plus the pressure in the corresponding outside fluid zone. Accordingly, if the cracking pressure is negative, fluid communication is allowed even if the pressure in the corresponding fluid outlet is a little lower than the pressure in the corresponding outside fluid zone.
  • the corresponding blocking means remains open until the pressure in the corresponding fluid outlet falls down and becomes lower than this predetermined value.
  • the major point can be either the second inlet point 52 or a maximum point.
  • the maximum point of the pump is defined as the point such that when a first virtual size vane 501 is placed in the maximum point, the volume enclosed by the first virtual size vane 501, a second virtual size vane 502 preceding to the first virtual size vane 501 and the portions of the chamber wall and the rotor between these virtual size vanes 501, 502, is maximum.
  • the maximum point coincides with the second inlet point 52, so the major point also coincides with the second inlet point 52.
  • the minor point 22 is the point of the chamber wall 21 with the minimum distance to the rotor 3.
  • the advance direction of the vanes is the direction in which the rotor is moved when the vacuum pump is in operation, so it is the direction in which the vanes advance when the vacuum pump is in operation.
  • the vanes of the vacuum pump have one position where the volume between two particular consecutive vanes is maximum. This maximum volume is achieved when one vane is located in a first maximum point of the chamber wall and the preceding vane is located in a second maximum point of the chamber wall.
  • the major point 23 is the second inlet point 52. But if the second inlet point 52 is located farther from the first primary outlet point 611 in the advance direction of the vanes than this first maximum point, the major point 23 is the first maximum point. This depends only on the configuration of the vacuum pump and the position of the fluid inlet with respect to the vanes, so this point is always the same for each given vacuum pump, without depending on the operation.
  • the chamber wall 21 may comprise more than one minor point 22 and more than one major point 23, because the rotor may be tangent to the chamber wall in more than one point (e.g., in the case of an elliptic vacuum chamber).
  • the vacuum pump comprises more than one compression zone.
  • the primary fluid outlet 61 is located in the compression zone 11.
  • This vacuum pump also comprises a secondary fluid outlet 62 and a final fluid outlet 63, all of them located in the compression zone 11 of the vacuum pump 1.
  • Figure 5 shows the vacuum pump 1 in a first position during operation.
  • a fluid enters the vacuum chamber 2 through the fluid inlet 5, and is kept in a first volume 10 defined by a front vane 41, a rear vane 42 and a portion of the chamber wall 21 as well as a portion of the rotor 3 comprised between these vanes 41, 42.
  • the first volume 10 is made smaller, as the portion of the chamber wall 21 which is comprised between the two vanes 41, 42, limiting the first volume 10 is nearer the rotor 3 as the rotor 3 rotates.
  • the secondary fluid outlet 62 is located between a first secondary outlet point 621 of the chamber wall 21 and a second secondary outlet point 622 of the chamber wall
  • the final fluid outlet 63 is located between a first final outlet point 631 of the chamber wall 21 and a second final outlet point 632 of the chamber wall 21.
  • the distance between the first secondary outlet point 621 and the minor point 22 is greater than the distance between the first final outlet point 631 and the minor point 22 but lower than the distance between the first primary outlet point 611 and the minor point 22.
  • the fluid which enters the vacuum chamber 2 finds first the primary fluid outlet 61, then the secondary fluid outlet 62 and finally the final fluid outlet 63.
  • the distance between the first final outlet point 631 and the minor point 22 is lower than the portion of the chamber wall between the first virtual outlet vane 601 and the second virtual outlet vane 602.
  • the secondary fluid outlet 62 comprises secondary blocking means 72 which only allows fluid communication between the secondary fluid outlet 62 and a second outside fluid zone 100' if the pressure in the secondary fluid outlet 62 is equal or higher than a second predetermined value which depends on the pressure in the second outside fluid zone 100'.
  • the final fluid outlet 63 comprises secondary blocking means 73 which only allows fluid communication between the final fluid outlet 63 and a third outside fluid zone 100" if the pressure in the final fluid outlet 63 is equal or higher than a third predetermined value which depends on the pressure in the third outside fluid zone 100".
  • the blocking means are non-return valves, which are designed to prevent fluid from flowing through it in one direction if the fluid pressure value does not reach a predetermined value.
  • Figure 6 shows the vacuum pump 1 in a second position during operation.
  • the pressure of the fluid which is kept in the first volume 10 has increased, as the dimensions of the first volume 10 has been reduced by the rotation of the rotor 3.
  • the first volume 10 reaches the first primary outlet point 611, therefore becoming in fluid communication with the primary fluid outlet 61.
  • This primary fluid outlet 61 is in fluid communication with the first outside fluid zone 100 by the interposition of primary blocking means 71, which only allows fluid communication between the primary fluid outlet 61 and the first outside fluid zone 100 if the pressure in the primary fluid outlet 61 is equal or higher than a first predetermined value which depends on the pressure in the first outside fluid zone 100.
  • the pressure in the first volume 10 and the pressure in the primary fluid outlet 61 is the same.
  • the primary blocking means 71 allows the fluid communication between the primary fluid outlet 61 and the first outside fluid zone 100. If the pressure of the fluid contained in the first volume 10 is furthermore greater than the pressure in the first outside fluid zone 100, fluid exits the first volume 10 towards the first outside fluid zone 100. As the advance of the rotor leads to a decrease in the dimensions of the first volume 10, pressure in this first volume 10 keeps on increasing, and fluid continues exiting. But at the same time, fluid exits the first volume 10 by the primary fluid outlet 61, so pressure in this first volume 10 decreases until the pressure of the first outside fluid zone 100 or until the primary blocking means 71 is activated. At some point, the rotation of the rotor 3 makes the first volume 10 cease being in fluid communication with the primary fluid outlet 61, when the rear vane 42 of the first volume 10 reaches the second primary outlet point 612.
  • the primary blocking means 71 prevents fluid communication between the primary fluid outlet 61 and the first outside fluid zone 100 if the pressure in the primary fluid outlet 61 is lower than a first predetermined value.
  • the pressure in the first volume 10 keeps on increasing, without decreasing due to fluid exit, as the primary blocking means 71 remains sealed until the pressure in the first volume 10 reaches the first predetermined value.
  • the distance between the tips of two consecutive vanes is greater than the distance between a second outlet point and the first outlet point of the subsequent fluid outlet.
  • the first volume 10 when pressure in the first volume 10 is not high enough to open the first blocking means 71 before the front vane 41 reaches the first secondary outlet point 621, the first volume 10 will become in fluid communication with the second fluid outlet 62 with a pressure which is not enough to open the first blocking means 71. If the second predetermined value is the same as the first predetermined value, the secondary blocking means 72 will be closed as well, because pressure in the first volume 10 is not enough to open the secondary blocking means 72. But if the compression of the first volume 10 makes the pressure inside this first volume 10 be equal or higher that the first and second predetermined value while the first volume 10 is still in fluid communication with the first fluid outlet 61, both primary and secondary blocking means will open.
  • both first 71 and second 72 blocking means will be closed during the whole time that both are at the same time in fluid communication with the first volume. But as the rear vane 42 advances and surpasses the second primary outlet point 612, the first volume 10 is further compressed, and it is possible that the secondary blocking means 72 may open, due to the greater pressure in the first volume 10.
  • Operation will continue, progressively reducing the pressure in the inlet 5 and consequently in the first volume 10, until a steady-state flow is reached in the vacuum pump.
  • FIG. 8 A graphic is illustrated in Figure 8 to show the difference between the average torque needed to operate the rotor of three different vacuum pumps throughout their entire performance curve.
  • the dashed line shows the torque needed to move the vacuum pump as known in the state of the art which has a single short outlet.
  • the dotted line shows the torque needed to move the vacuum pump as known in the state of the art which has a single large outlet.
  • the solid line shows the torque needed to move the vacuum pump of the invention.
  • "Short" outlet and "large” outlet refer to the size of the single outlet, the second point of which is placed near the minor point of the vacuum pump (second point and minor point should be understood according to the terminology used in the description for the vacuum pump of the invention).
  • the outlet extends along around 18 degrees in the vacuum chamber and in the particular example of large outlet, the outlet extends along around 73 degrees in the vacuum chamber.
  • Vacuum pumps with short outlets require more torque when starting a full operation, because pressure reaches higher values, and a greater compression rate is achieved.
  • the pressure level decreases, the pressure difference between two consecutive chambers is lower and therefore, this pump becomes more efficient in terms of torque.
  • Vacuum pumps with a large outlet require, initially, less torque, as the big outlet does not allow fluid to reach high pressure.
  • this lack of initial pre-compression in the chamber before communicating with the exit leads to an increased pressure difference between the chamber open to the outlet fluid zones and the previous one which generates a higher resistant torque along the function of the pump.
  • a low torque is needed when starting operation and a low torque is needed in the second performance phase as well as in the steady state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
EP16382487.3A 2016-10-25 2016-10-25 Pompe à vide Withdrawn EP3315782A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16382487.3A EP3315782A1 (fr) 2016-10-25 2016-10-25 Pompe à vide
ES17787196T ES2832676T3 (es) 2016-10-25 2017-10-24 Bomba de vacío
CN201780005929.5A CN109072924B (zh) 2016-10-25 2017-10-24 真空泵
EP17787196.9A EP3532731B1 (fr) 2016-10-25 2017-10-24 Pompe à vide
PCT/EP2017/077133 WO2018077859A1 (fr) 2016-10-25 2017-10-24 Pompe à vide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16382487.3A EP3315782A1 (fr) 2016-10-25 2016-10-25 Pompe à vide

Publications (1)

Publication Number Publication Date
EP3315782A1 true EP3315782A1 (fr) 2018-05-02

Family

ID=57211457

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16382487.3A Withdrawn EP3315782A1 (fr) 2016-10-25 2016-10-25 Pompe à vide
EP17787196.9A Active EP3532731B1 (fr) 2016-10-25 2017-10-24 Pompe à vide

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17787196.9A Active EP3532731B1 (fr) 2016-10-25 2017-10-24 Pompe à vide

Country Status (4)

Country Link
EP (2) EP3315782A1 (fr)
CN (1) CN109072924B (fr)
ES (1) ES2832676T3 (fr)
WO (1) WO2018077859A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140286807A1 (en) * 2012-01-11 2014-09-25 Mitsubishi Electric Corporaton Vane compressor
EP2857687A1 (fr) * 2012-06-05 2015-04-08 Calsonic Kansei Corporation Compresseur de gaz
WO2015104930A1 (fr) * 2014-01-09 2015-07-16 カルソニックカンセイ株式会社 Compresseur à gaz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62251482A (ja) * 1986-04-24 1987-11-02 Honda Motor Co Ltd 圧縮機における吐出ポ−ト用逆止弁
JP4060149B2 (ja) * 2002-08-30 2008-03-12 カルソニックコンプレッサー株式会社 気体圧縮機
DE102006061706A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Flügelzellenpumpe
CN105987004B (zh) * 2015-01-28 2018-02-06 珠海格力节能环保制冷技术研究中心有限公司 滑片式压缩机及其排气结构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140286807A1 (en) * 2012-01-11 2014-09-25 Mitsubishi Electric Corporaton Vane compressor
EP2857687A1 (fr) * 2012-06-05 2015-04-08 Calsonic Kansei Corporation Compresseur de gaz
WO2015104930A1 (fr) * 2014-01-09 2015-07-16 カルソニックカンセイ株式会社 Compresseur à gaz

Also Published As

Publication number Publication date
EP3532731A1 (fr) 2019-09-04
WO2018077859A1 (fr) 2018-05-03
EP3532731B1 (fr) 2020-08-19
CN109072924A (zh) 2018-12-21
ES2832676T3 (es) 2021-06-10
CN109072924B (zh) 2021-06-22

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