EP4348048A1 - Kompressorsystem für ein pannenhilfeset, pannenhilfeset mit einem solchen kompressorsystem und verfahren zum abdichten eines fahrzeugreifens mit einem solchen kompressorsystem - Google Patents
Kompressorsystem für ein pannenhilfeset, pannenhilfeset mit einem solchen kompressorsystem und verfahren zum abdichten eines fahrzeugreifens mit einem solchen kompressorsystemInfo
- Publication number
- EP4348048A1 EP4348048A1 EP21830315.4A EP21830315A EP4348048A1 EP 4348048 A1 EP4348048 A1 EP 4348048A1 EP 21830315 A EP21830315 A EP 21830315A EP 4348048 A1 EP4348048 A1 EP 4348048A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- compressor system
- piston
- volume
- main body
- 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.)
- Granted
Links
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- 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
- F04B53/162—Adaptations of cylinders
-
- 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
- F04B2201/00—Pump parameters
- F04B2201/08—Cylinder or housing parameters
- F04B2201/0808—Size of the dead volume
Definitions
- Compressor system for a breakdown kit breakdown kit with such a compressor system and method for sealing a vehicle tire with such a compressor system
- the invention relates to a compressor system for a breakdown kit according to the preamble of patent claim 1, a breakdown kit according to the preamble of patent claim 6 and a method for sealing a vehicle tire according to the preamble of patent claim 8.
- Compressor systems for roadside assistance kits and roadside assistance kits with compressors are known in the prior art and are typically used in portable devices for air compression.
- the use of a compressor serves to generate compressed air, through which a sealant for sealing a vehicle tire is pumped into the vehicle tire in the event of a puncture and/or to fill the vehicle tire with air after sealing.
- the compressors usually have at least one motor and one cylinder with a reciprocating piston compressor driven by a crank mechanism.
- the cylinder is usually formed from metal so that the material is strong enough for the reciprocating compressor to compress the air in the pumping chamber.
- the disadvantage is that the requirements placed on such a material greatly restrict the shape of the cylinder and thus generate high production costs.
- Relief or overpressure valves are usually used to limit the maximum pressure to be generated.
- the prior art also describes other ways of limiting the maximum pressure.
- EP2918834B1 discloses a compressor system having a motor, a piston and a cylinder without using an unloader valve.
- the maximum pressure is not limited by a relief valve, but by the appropriate selection of the compression volume.
- the disadvantage of such compressor systems is that the structure of such systems is only designed for high compression volumes.
- a low compression volume equal to or greater than 0.8 is considered.
- a high compression volume is considered to be in the range below 0.8, particularly in the range 0.3 to 0.8.
- the object of the present invention is to provide a compressor system for a breakdown assistance set, which makes it possible to limit the maximum pressure in the area of the middle compression volume. Furthermore, it is the object of the invention to provide a breakdown assistance set with which the limitation of the maximum pressure in the area of the middle compression volume is made possible. A further object of the invention is to provide a method for sealing vehicle tires, by means of which vehicle tires can be sealed by limiting the maximum pressure in the region of the mean compression volume.
- the object of the invention is achieved by a compressor system for breakdown kits with the features of patent claim 1, by a breakdown kit with the features of patent claim 6 and by a method for sealing vehicle tires with the features of patent claim 8.
- a compressor system for a roadside assistance kit in which a supply pressure of compressed air is controlled to a specified pressure Pp or less without using a relief valve, comprising
- a cylinder member having a cylinder main body having a pumping chamber in which a piston is reciprocally movable from a bottom dead center to a top dead center and compresses air, and a receiving chamber for receiving the compressed air compressed in the pumping chamber through an air release valve, wherein the cylinder main body is elastically deformable with increasing pressure, the cylinder main body being deformable to the extent that the compression volume V2 of the cylinder satisfies the following expression (a),
- V1 is a stroke volume, which is a cylinder volume while the piston moves from bottom dead center to top dead center,
- V2 is a compression volume, which is a cylinder volume when the piston is at top dead center
- PO is an air pressure
- a compressor system according to the invention can be used at medium compression volumes through the use of a main cylinder body which is elastically deformable with increasing pressure, as a result of which significantly more designs of a cylinder are possible and consequently production costs can be reduced.
- the maximum pressure in the cylinder can be obtained by satisfying the expression (a) in spite of the cylinder main body being elastically deformable.
- Such compressor systems can build up sufficiently constant pressure without the use of relief valves to ensure safe use in a breakdown kit.
- a cylinder main body is elastically deformable with increasing pressure by allowing the wall of the cylinder main body to yield with increasing pressure. It is conceivable that the side walls of the pump chamber bulge outwards when the pressure is increased. As the pressure drops, the cylinder body returns to its original shape.
- the cylinder main body comprises at least one plastic. Plastics are particularly suitable because they can be easily processed and are usually deformable. Different plastics are conceivable. At least one plastic selected from the group consisting of polyamide, polyethylene, polycarbonate and polypropylene is particularly preferably suitable.
- Such plastics have a particularly suitable flexibility, as a result of which they can be used as the material of a cylinder component.
- Other common flexible plastics that are commonly used for a cylinder are also suitable. It is advantageous that such plastics are elastically deformable, which means that such compressor systems are suitable for use without relief valves in order to enable the maximum pressure to be limited in the area of the high compression volume.
- the main cylinder body comprises only plastic, as a result of which the main cylinder body has particularly good elastic deformability in order to enable the advantages mentioned.
- the wall of the cylinder main body has a thickness ranging from 1 to 3 mm.
- the wall of the cylinder main body is in the range of 1 to 3 mm in order to be elastically deformable.
- an elastically deformable wall of a cylinder main body leads to a limitation of the maximum pressure in the area of the medium compression volume.
- the cylinder main body wall of the pumping chamber is elastically deformable.
- the material of the cylinder wall preferably has a flexural modulus in the range from 0.5 to 10 GPa. It has been found that a cylinder wall of the cylinder main body with a flexural modulus in this range is particularly good is suitable to limit the maximum pressure in the area of high compression volume. In a particularly preferred embodiment, the flexural modulus is in the range from 1 to 1.5 GPa.
- the object is achieved by a breakdown assistance set, wherein the breakdown assistance set comprises a described compressor system and a sealant device, the sealant device having a sealant for sealing a vehicle tire.
- the maximum pressure can be limited in the area of high compression volumes in a breakdown kit. This is particularly advantageous for breakdown assistance sets, since the construction of the compressor should usually be inexpensive and limited to the essential properties.
- a breakdown assistance set according to the invention with a described compressor system enables simple production, for example of cylinder bodies made of plastic. Compressor systems without relief valves are advantageous because the risk of backflow if the air outlet becomes clogged is reduced.
- the compressor system can be connected to the sealant device.
- the sealant device in roadside assistance kits with a sealant device is first connected to the compressor system before use.
- the compressor system then generates air pressure that delivers the sealant into the vehicle tire to seal the vehicle tire.
- V1 is a stroke volume, which is a cylinder volume while the piston moves from bottom dead center to top dead center,
- V2 is a compression volume, which is a cylinder volume when the piston is at top dead center and PO is an air pressure, and ii) delivering a sealant into a vehicle tire by means of excess pressure built up in the compressor system.
- the method according to the invention for sealing a vehicle tire with a sealant is advantageous since the limitation of the maximum pressure is also possible for high compression volumes. Even with a compressor design, in particular made of plastic, a relief valve can be dispensed with and the risk of backflow if the air outlet becomes blocked can be reduced.
- Figure 1a is a cross-sectional view of a cylinder main body with a
- Figure 1 b is a cross-sectional view of a cylinder main body with a
- FIG. 1a shows a cross-sectional view of a cylinder main body 1 with a piston 2 and an air inlet opening 3 and an air outlet opening 4, such a structure being used in a compressor and/or breakdown kit according to the invention.
- the both side walls 5 of the cylinder main body 1 are elastically deformable with increasing pressure.
- the piston 2 is at bottom dead center with the side walls 5 of the cylinder main body 1 not being deformed. With increasing pressure, the side walls 5 deform outwards in the region of the pump chamber 6 until the piston 2 has reached top dead center (FIG. 1b). The process of generating the maximum pressure and back to the bottom dead center of the piston 2 is reversible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021205681.4A DE102021205681A1 (de) | 2021-06-04 | 2021-06-04 | Kompressorsystem für ein Pannenhilfeset, Pannenhilfeset mit einem solchen Kompressorsystem und Verfahren zum Abdichten eines Fahrzeugreifens mit einem solchen Kompressorsystem |
| PCT/DE2021/200235 WO2022253374A1 (de) | 2021-06-04 | 2021-12-02 | Kompressorsystem für ein pannenhilfeset, pannenhilfeset mit einem solchen kompressorsystem und verfahren zum abdichten eines fahrzeugreifens mit einem solchen kompressorsystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4348048A1 true EP4348048A1 (de) | 2024-04-10 |
| EP4348048B1 EP4348048B1 (de) | 2025-03-05 |
Family
ID=79018925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21830315.4A Active EP4348048B1 (de) | 2021-06-04 | 2021-12-02 | Kompressorsystem für ein pannenhilfeset, pannenhilfeset mit einem solchen kompressorsystem und verfahren zum abdichten eines fahrzeugreifens mit einem solchen kompressorsystem |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240262056A1 (de) |
| EP (1) | EP4348048B1 (de) |
| CN (1) | CN117529612A (de) |
| DE (1) | DE102021205681A1 (de) |
| PL (1) | PL4348048T3 (de) |
| WO (1) | WO2022253374A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100396776B1 (ko) * | 2001-04-03 | 2003-09-03 | 엘지전자 주식회사 | 압축기의 실린더 헤드 |
| JP4420740B2 (ja) * | 2004-05-27 | 2010-02-24 | 株式会社ブリヂストン | ポンプアップ装置 |
| BRPI1105473B1 (pt) * | 2011-11-16 | 2020-12-01 | Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda. | compressor de gás compreendendo uma mancalização aerostática |
| CN104755760B (zh) * | 2012-10-26 | 2017-05-31 | 住友橡胶工业株式会社 | 压缩机系统和使用该压缩机系统的穿孔修补套件 |
| BR102016013780B8 (pt) * | 2016-06-14 | 2021-07-20 | Embraco Ind De Compressores E Solucoes Em Refrigeracao Ltda | arranjo de fixação de cabeçote de compressor de refrigeração |
| DE102017219326A1 (de) * | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | Kolbenverdichter |
| CN112128079A (zh) * | 2020-10-30 | 2020-12-25 | 广西玉柴机器股份有限公司 | 一种自带冷却系统的空气压缩机 |
| DE102022208268A1 (de) * | 2022-08-09 | 2024-02-15 | Continental Reifen Deutschland Gmbh | Kompressorsysteme für Pannenhilfesets |
-
2021
- 2021-06-04 DE DE102021205681.4A patent/DE102021205681A1/de active Pending
- 2021-12-02 PL PL21830315.4T patent/PL4348048T3/pl unknown
- 2021-12-02 CN CN202180098976.5A patent/CN117529612A/zh active Pending
- 2021-12-02 US US18/566,630 patent/US20240262056A1/en active Pending
- 2021-12-02 EP EP21830315.4A patent/EP4348048B1/de active Active
- 2021-12-02 WO PCT/DE2021/200235 patent/WO2022253374A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN117529612A (zh) | 2024-02-06 |
| US20240262056A1 (en) | 2024-08-08 |
| DE102021205681A1 (de) | 2022-12-08 |
| PL4348048T3 (pl) | 2025-06-23 |
| WO2022253374A1 (de) | 2022-12-08 |
| EP4348048B1 (de) | 2025-03-05 |
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