EP1793183A2 - Dispositif pour le séchage d'un fluide - Google Patents

Dispositif pour le séchage d'un fluide Download PDF

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Publication number
EP1793183A2
EP1793183A2 EP06024987A EP06024987A EP1793183A2 EP 1793183 A2 EP1793183 A2 EP 1793183A2 EP 06024987 A EP06024987 A EP 06024987A EP 06024987 A EP06024987 A EP 06024987A EP 1793183 A2 EP1793183 A2 EP 1793183A2
Authority
EP
European Patent Office
Prior art keywords
bodies
fluid
polymer
connection
cross
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Withdrawn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
EP06024987A
Other languages
German (de)
English (en)
Other versions
EP1793183A3 (fr
Inventor
Roland Dipl.-Phys. Burk
Herbert Dr.-Ing. Damsohn
Conrad Dr.-Ing. Pfender
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1793183A2 publication Critical patent/EP1793183A2/fr
Publication of EP1793183A3 publication Critical patent/EP1793183A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the invention relates to a device for drying a fluid according to the preamble of claim 1.
  • DE 10 2004 059 799 A1 describes an apparatus for drying a refrigerant of an air conditioner in which a desiccant is in an elongated, rod or belt-like form.
  • the rods or bands are flexibly bendable over their entire length and are inserted in the form of bundles of parallel and mutually displaceable flexible rods in a generally curved conduit of an air conditioner.
  • parts of the thin rods can be torn off and moved in the refrigeration cycle.
  • only a small free cross-section remains for the passage of the refrigerant.
  • only a small proportion of desiccant is possible as embedding in a polymer.
  • the fluid is a refrigerant of an air conditioning system, in particular for a motor vehicle.
  • air conditioning systems for motor vehicles require a high integration of components due to a limited space and weight requirements.
  • the housing is formed as a tubular, in particular bent line of the air conditioner.
  • the mutually movable, in each case dimensionally stable body can also be inserted into a curved line section.
  • the line section can have an enlarged cross-section compared to a normal line, which essentially corresponds to a diameter of the body in order to ensure a required flow of kite material, taking into account the flow resistance of the body.
  • the proposed device in connection with other tubular conduits - which may be bent and / or straight - is used.
  • the bodies are at least partially made of a material which is suitable for absorbing moisture from the fluid.
  • the material may particularly preferably be a mixture of a polymer and a desiccant incorporated in the polymer.
  • the polymer preferably has a receptivity and / or a permeability to water in order to improve the drying properties of the body and the access of the water contained in the fluid to the desiccant to enable and improve.
  • a polymer suitable for this purpose is preferably essentially a polyamide, particularly preferably PA66.
  • Polyamides are known to have on the one hand good mechanical strength even at higher temperatures and are chemically resistant to common refrigerants, on the other hand, they tend to absorb a certain amount of water. This often interfering with other use of polyamides disturbing property is especially in combination with a device according to the invention of particular advantage.
  • the desiccant incorporated in the polymer or the material suitable for receiving moisture from the fluid is preferably a zeolite.
  • the grain size and shape of the zeolite, of the desiccant or of the material suitable for absorbing moisture from the fluid is advantageously adapted to the spatial dimensioning of the structures of the bodies.
  • zeolites in a grain size between 1 .mu.m and 100 .mu.m may be mixed with the polymer, whereby the mechanical load-bearing properties of the polymer are substantially retained.
  • an accumulation of the zeolite on outer surfaces of the polymer or the body may also preferably be present.
  • connection between the first and second body is formed by a substantially elastically bendable web, so that the mobility of the body is given to each other in a simple manner.
  • connection between the first and second body is formed in the manner of a film hinge, wherein the first and second body can be tilted substantially only in one plane to each other.
  • at least a third body is particularly preferably connected to the second body by means of a further film hinge, wherein a tilting of the third body to the second body takes place in a different plane than the tilting of the second body to the first body.
  • the compound is preferably formed as a taper incorporated into an originally integral extruded profile.
  • a taper can be done for example by sawing, turning out a gap or similar processing steps. This allows the use of an extrusion process to form an endless or quasi-endless profile, from which subsequently the interconnected bodies are singulated.
  • the individual bodies in addition to their compounds, can also be produced in a single process step, for example by an injection molding process. But the compounds can also consist of separate components and do not need to be molded with the same material body. It is also conceivable that - in particular in connection with otherwise separate components - at least one continuous filament, a string or another elongated element, which is optionally made separately from the other components and only then connected to these, is provided.
  • At least one of the bodies is formed in cross-section as a substantially star-shaped profile.
  • a design is simple and inexpensive to produce and offers at the same time a relatively large surface.
  • at least one of the bodies in cross-section also have a peripheral outer wall, whereby a good guidance and support is provided in the housing.
  • at least one of the bodies in cross-section may have a structure with a plurality of chambers open in the longitudinal direction of the body. As a result, a large surface of the body cooperating with the fluid is generally made possible with a relatively small flow resistance.
  • Fig. 1 shows a profile body 1, which consists of polyamide PA66, in which granular zeolite is incorporated with an average particle diameter of 10 .mu.m.
  • the total diameter of the body 1 is about 10mm.
  • the body 1 has a peripheral outer wall 2, which surrounds it in the manner of a cylindrical sleeve open to both ends. Within this peripheral wall 2, a number of mutually perpendicular and intersecting partitions 3 are arranged so that through the partitions 3, a number of open in the longitudinal direction of the body chambers 4 of is formed in each case substantially square cross-section.
  • the outer shape of the body 1 corresponds to that of a cylinder, wherein diameter and length are similar. Visible is provided by the peripheral wall 2 and through the chambers 4, both a large free cross section for the passage of a refrigerant of an air conditioner and a large contact surface between the refrigerant and the material of the body. 1
  • the cross section of the body represents as a number of symmetrically star-shaped emanating from a center rays or plates 5, so that this body has an imaginary cylindrical enveloping shape.
  • the plates 5 are made of the same material as in the first embodiment. Again, there is a good combination of large interacting surface area and low flow resistance through the body.
  • a combination of the star-shaped cross-section from FIG. 2 with a peripheral wall 6 is present, wherein the plates 5 are connected to the circumferential wall 6.
  • additional struts 7 are provided, which begin at the peripheral wall 6 and project into a chamber 8 formed by the peripheral wall 6 and two plates 5.
  • Fig. 4 it is illustrated that a plurality of the above-described body 1 are fixed to one another due to their small diameter flexible connecting webs 9 movable together and thus form a chain of bodies 1. These bodies do not necessarily have the same length, which is indicated by a shorter body 1a.
  • Fig. 5 shows a chain of bodies as in Fig. 4, which is inserted into a bent conduit for a refrigerant of a motor vehicle air conditioner.
  • the bent line 10 has a larger diameter in the region in which it forms a housing for the body 1, as in the remaining area, in the it has a free cross-section. This results in a substantially constant flow resistance per length for the refrigerant.
  • the chain of bodies according to FIG. 4 can in particular be prefabricated as an endless or quasi-endless chain.
  • a correspondingly cut chain of bodies 1 can be inserted into a conventional or section-extended line 10 during assembly of the air conditioning system.
  • the chain adapts to each other by the relative mobility of the body to each depending on the space individual bends of the line 10.
  • the refrigerant of an automotive air conditioner is free of water. Due to leakage or low gas exchange with the atmosphere, a certain amount of moisture may penetrate over the life of the air conditioner.
  • the refrigerant is continuously pumped through the open body 1 in its flow direction.
  • the material of the body 1 continuously absorbs the moisture introduced from the outside into the refrigerant. Since the moisture is generally introduced neither abruptly nor in large quantities, it is quite sufficient that the structural stability of the body-based PA66 supporting polymer has only a low permeability to water.
  • the chain described above may also be provided with further filter elements, which are particularly advantageously arranged in the flow direction at the end of the chain.
  • at least one of the bodies may be shaped in its cross-section in the manner of a sieve in order to simultaneously have sieving properties for larger particles and drying properties for absorbing moisture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Drying Of Solid Materials (AREA)
EP06024987A 2005-12-02 2006-12-04 Dispositif pour le séchage d'un fluide Withdrawn EP1793183A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510057922 DE102005057922A1 (de) 2005-12-02 2005-12-02 Vorrichtung zur Trocknung eines Fluids

Publications (2)

Publication Number Publication Date
EP1793183A2 true EP1793183A2 (fr) 2007-06-06
EP1793183A3 EP1793183A3 (fr) 2008-06-11

Family

ID=37846190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06024987A Withdrawn EP1793183A3 (fr) 2005-12-02 2006-12-04 Dispositif pour le séchage d'un fluide

Country Status (2)

Country Link
EP (1) EP1793183A3 (fr)
DE (1) DE102005057922A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013566A (en) * 1975-04-07 1977-03-22 Adsorbex, Incorporated Flexible desiccant body
US5240483A (en) * 1992-04-27 1993-08-31 Mueller Refrigeration Products Co., Inc. Refrigerant filter-drier for use in a refrigerant recycling device
JP2001349643A (ja) * 2000-06-06 2001-12-21 Kenmore Thermo Kaelte Gmbh 液化器と蒸発器を備えた冷凍回路
DE202005005083U1 (de) * 2005-03-31 2005-06-30 Kirchner, Jörg Trocknerstrecke in einem Kältemittelkreislauf
EP1562010A2 (fr) * 2004-01-30 2005-08-10 Behr GmbH & Co. Echangeur de chaleur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013566A (en) * 1975-04-07 1977-03-22 Adsorbex, Incorporated Flexible desiccant body
US5240483A (en) * 1992-04-27 1993-08-31 Mueller Refrigeration Products Co., Inc. Refrigerant filter-drier for use in a refrigerant recycling device
JP2001349643A (ja) * 2000-06-06 2001-12-21 Kenmore Thermo Kaelte Gmbh 液化器と蒸発器を備えた冷凍回路
EP1562010A2 (fr) * 2004-01-30 2005-08-10 Behr GmbH & Co. Echangeur de chaleur
DE202005005083U1 (de) * 2005-03-31 2005-06-30 Kirchner, Jörg Trocknerstrecke in einem Kältemittelkreislauf

Also Published As

Publication number Publication date
EP1793183A3 (fr) 2008-06-11
DE102005057922A1 (de) 2007-06-06

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