Membrane vacuum pump

A vacuum pump and membrane technology, applied in pumps, piston pumps, oil suction pumps, etc., can solve the problems of large pumps, achieve the effects of reducing costs, simplifying structures, and improving process reliability

Active Publication Date: 2015-12-09
MEDELA HLDG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of many of these pumps is that the pumps are relatively large and noisy

Method used

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  • Membrane vacuum pump
  • Membrane vacuum pump
  • Membrane vacuum pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] exist figure 1 A first embodiment of a vacuum pump according to the invention or a pump unit according to the invention with an electromagnetic drive is shown in .

[0049] The pump unit has a housing 90 which is preferably made of metal or plastic. The housing 90 preferably has a square configuration. In the housing 90, a flat iron core or iron plate 911 and a permanent magnet 91 fixed to the iron plate are arranged on one side. The iron plate 911 is laid flat on the housing 90 so that the permanent magnet 91 is disposed in the recess of the housing. The permanent magnet 91 consists of two parts arranged at a distance from one another such that a cutout 910 is present between the two parts.

[0050] The same configuration also exists on the opposite side of the housing. Here too, an iron plate 911 and a two-part permanent magnet 91 fastened thereto are provided.

[0051] A flat coil former 92 extends between the two opposing pairs of permanent magnets 91 , wherein...

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Abstract

The invention relates to a membrane vacuum pump comprising an electrically operated drive unit and a vacuum membrane (94"), which separates a pump chamber (96") into a drive-side part and a non-drive-side part and which can be deflected by means of a movable part (92") of the drive unit. The drive unit is an electromagnetic drive unit, and the vacuum membrane (94") is deflected in the direction of a linear motion produced electromagnetically in the drive unit. A venting valve (903) is preferably also actuated by means of said movable part (92"). Said vacuum pump is relatively small and compact and operates with little noise. Said vacuum pump is suited in particular for hands-free applications of breast pumps.

Description

technical field [0001] The invention relates to a membrane vacuum pump having an electrically driven drive unit and a vacuum membrane which separates a pump chamber into a part on the drive side and a part remote from the drive side and which can be operated by means of The movable part of the drive unit is deflected. Background technique [0002] Membrane vacuum pumps of this type are used in various medical applications, especially in drainage applications such as wound drainage or chest drainage. Said diaphragm vacuum pumps are also sufficiently known as breast pumps for expressing human breast milk. Examples of this are WO96 / 22116, US2009 / 0099511, US2008 / 0287037, US7094217 and US2008 / 0039781. [0003] The drive usually consists of an electric motor, which transmits the rotational movement of the motor to the membrane via an eccentric, a connecting rod or another force transmission unit and deflects it periodically. A disadvantage of many of these pumps is that the pum...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A61M1/06F04B35/04
CPCF04B43/04A61M1/0066A61M1/0072A61M1/06A61M2205/3306F04B35/045F04B45/047A61M1/82A61M1/80A61M1/06935A61M1/067F04B35/04F04B37/14
Inventor阿明·费尔伯贝达·韦伯罗朗德·科吉艾蒂安·富雷尔
OwnerMEDELA HLDG AG