EP0635685B1 - Breathing air cooling appliance - Google Patents

Breathing air cooling appliance Download PDF

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Publication number
EP0635685B1
EP0635685B1 EP94111055A EP94111055A EP0635685B1 EP 0635685 B1 EP0635685 B1 EP 0635685B1 EP 94111055 A EP94111055 A EP 94111055A EP 94111055 A EP94111055 A EP 94111055A EP 0635685 B1 EP0635685 B1 EP 0635685B1
Authority
EP
European Patent Office
Prior art keywords
air
ozone
cooling appliance
refrigerating machine
catalyst
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.)
Expired - Lifetime
Application number
EP94111055A
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German (de)
French (fr)
Other versions
EP0635685A1 (en
Inventor
Hans-Jürgen Dipl. Ing. Beitz
Malte Dr. Dipl. Chem. Berndt
Martin Dipl.Ing. Meister
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.)
Engelhard Italiana SpA
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Engelhard Italiana SpA
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Publication date
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Publication of EP0635685A1 publication Critical patent/EP0635685A1/en
Application granted granted Critical
Publication of EP0635685B1 publication Critical patent/EP0635685B1/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
    • G03G21/206—Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters

Definitions

  • the invention relates to a refrigerator with the in the preamble of claim 1 specified features.
  • a cooling device is known from US-A-4,133,652.
  • ozone On hot, sunny days, especially in conurbations through interaction of solar radiation with Air pollutants, especially nitrogen oxides, ozone are formed.
  • the ozone accumulates in the air we breathe and can close Difficulty breathing.
  • closed rooms where even no ozone is formed is the ozone load less because the rooms are isolated from the outside air are.
  • the rooms in general then be kept closed when ozone formation is low, namely in the cold season, whereas in the warm season Season in which the ozone formation is strongest, doors and windows be opened so that the outside air enriched with ozone flows in unhindered can.
  • the object of the present invention is to reduce the ozone load in clear out and reduce cabins.
  • a cooling device with the specified in claim 1
  • an ozone catalyst is located in the flow path in front of the refrigerator lies. Only by combining an ozone catalyst with a cooling device it can be ensured that the ozone content in rooms can be kept low, because only if the rooms are supplied with cooled air there is sufficient probability that windows and doors be kept closed or windows can be installed from the outset that cannot be opened. The same applies to automobiles in which In summer there is only an incentive, windows and sunroof closed to hold, or not to provide a sunroof at all, if a pleasant temperature is ensured by cooling instead of draft can be.
  • the combination of the cooling device and the ozone catalyst appears therefore as the only sensible way to check the ozone content in rooms and keep cabins low.
  • the ozone catalyst is placed in front of the chiller. This has the advantage that relatively warm air is applied to it, which is favorable for the efficiency. It would be different if the catalytic converter were arranged in the flow path behind the chiller: There, the catalytic converter would be undercooled by the cold air flowing past, its conversion rate would decrease and condensation water would form on the catalytic converter, which would lead to a further decrease in the catalytic conversion rate and corrosion problems would entail.
  • a dust filter in the flow path in front of the catalytic converter to provide.
  • the invention is particularly suitable for automobiles and small air conditioners, such as those used for air conditioning small Find shops and practices.
  • catalytically active substance that will split ozone Palladium used, which already without additional heating is sufficiently active.
  • the catalytically active substance is superficially on a Anchored support that is permeable to air, e.g. on a ceramic honeycomb body, on a body made of layered Corrugated iron or on crosswise stacked Wire mesh.
  • the flow resistance and thus type and The thickness of the carrier must be adapted to the place of use, whereas the inflow surface corresponds to that in the cooling unit available space can be selected.
  • you build the gap catalyst in modular design in such a way that you have several flat, one below the other installs beams of the same thickness in a holding frame.
  • the carriers which are preferably the same, can then prefabricated for different applications and in Frames are used that are adapted to the purpose are.
  • the frame can be a simple one Act lattice structure in which the beams are loose inserted and fixed by a counter frame.
  • the carrier has proven to be particularly favorable choose between 10 and 30 mm thick, preferably approx. 15 mm thick. For higher efficiency one can use several arrange such layers of supports one behind the other in a common framework or in separate frameworks, which in turn are combined into a module.
  • Figure 1 shows a compact air conditioner with an elongated, cuboid housing 1 with a suction side 2 at one End and an air outlet side 3 at the other end and in between arranged a refrigerator 4, a fan 5, a gap catalyst 6, a dust filter 7 and at the On the outlet side, a blind 8 made of adjustable slats.
  • the catalyst 6 is located between the dust filter 7 on the input side and the fan 5, which the Air sucks in through catalyst 6 and over the refrigerator 4 presses. From the intake side 2 coming, still relatively warm and through the dust filter 7 cleaned air flows through the catalyst 6, in which the ozone is converted to oxygen, and is then cooled in the refrigerator 4.
  • the catalytic converter 6 is of modular construction manufactured. It consists of a plastic frame 9, in which by cross-arranged webs 11 nine same fields are formed, in which one Catalyst carrier 10 is held. Two such frames 9 are arranged one behind the other and to form the Catalyst 6 summarized.

Abstract

Breathing-air cooling appliance with an air-intake side (2), with an air-outlet side (3) and with a fan (5) and a refrigerating machine (4) between the intake side and outlet side. An ozonolysis catalyst (6) is provided in front of the refrigerating machine (4). <IMAGE>

Description

Die Erfindung betrifft ein Kühlgerät mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen. Ein solches Kühlgerät ist aus der US-A-4,133,652-bekannt.The invention relates to a refrigerator with the in the preamble of claim 1 specified features. Such a cooling device is known from US-A-4,133,652.

An heißen, sonnigen Tagen wird insbesondere in Ballungsgebieten durch Wechselwirkung von Sonneneinstrahlung mit Luftschadstoffen, insbesondere Stickoxiden, Ozon gebildet. Das Ozon reichert sich in der Atemluft an und kann zu Atembeschwerden führen. In geschlossenen Räumen, in denen selbst kein Ozon gebildet wird, ist die Ozonbelastung geringer, da die Räume von der Aussenluft abgeschottet sind. Leider ist es so, dass die Räume im allgemeinen dann geschlossen gehalten werden, wenn die Ozonbildung gering ist, nämlich in der kalten Jahreszeit, wohingegen ausgerechnet in der warmen Jahreszeit, in welcher die Ozonbildung am stärksten ist, Türen und Fenster geöffnet werden, so daß die mit Ozon angereicherte Außenluft ungehindert einströmen kann.On hot, sunny days, especially in conurbations through interaction of solar radiation with Air pollutants, especially nitrogen oxides, ozone are formed. The ozone accumulates in the air we breathe and can close Difficulty breathing. In closed rooms where even no ozone is formed is the ozone load less because the rooms are isolated from the outside air are. Unfortunately, the rooms in general then be kept closed when ozone formation is low, namely in the cold season, whereas in the warm season Season in which the ozone formation is strongest, doors and windows be opened so that the outside air enriched with ozone flows in unhindered can.

Bei den aus der US-4,133,652-A bekannten Kühlgerät ist vor der Kältemaschine ein chemisches Ozonfilter vorgesehen, welches chemisch verändert wird und Wartungsbedarf hat. Aus der WO81/01250 ist es bekannt, beheizte Palladiumkatalysatoren mit länglichen Wabenkörpern aus Aluminium zur Ozonverminderung in Flugzeugen einzusetzen.In the cooling device known from US-4,133,652-A is in front of the refrigerator a chemical ozone filter is provided, which is chemically changed and Has maintenance needs. From WO81 / 01250 it is known to use heated palladium catalysts with elongated aluminum honeycomb bodies to reduce ozone used in aircraft.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Ozonbelastung in räumen und Kabinen zu verringern.The object of the present invention is to reduce the ozone load in clear out and reduce cabins.

Diese Aufgabe wird gelöst durch ein Kühlgerät mit den im Anspruch 1 angegebenen Merkmalen, bei welchem im Strömungsweg vor der Kältemaschine ein Ozon-Spaltkatalysator liegt. Nur durch die Kombination eines Ozon-Spaltkatalysators mit einem Kühlgerät kann gewährleistet werden, daß der Ozongehalt in Räumen niedrig gehalten werden kann, denn nur wenn die Räume mit gekühlter Luft versorgt werden, besteht ausreichend Wahrscheinlichkeit, daß Fenster und Türen geschlossen gehalten werden bzw. können von vornherein Fenster eingebaut werden, die sich nicht öffnen lassen. Entsprechendes gilt für Automobile, in denen zur Sommerzeit nur dann ein Anreiz besteht, Fenster und Schiebedach geschlossen zu halten, bzw. ein Schiebedach erst überhaupt nicht vorzusehen, wenn durch Kühlung statt durch Durchzug für eine angenehme Temperatur gesorgt werden kann. Die Kombination von Kühlgerät und Ozon-Spaltkatalysator erscheint deshalb als die einzige sinnvolle Möglichkeit, den Ozongehalt in Räumen und Kabinen niedrig zu halten. This object is achieved by a cooling device with the specified in claim 1 Features in which an ozone catalyst is located in the flow path in front of the refrigerator lies. Only by combining an ozone catalyst with a cooling device it can be ensured that the ozone content in rooms can be kept low, because only if the rooms are supplied with cooled air there is sufficient probability that windows and doors be kept closed or windows can be installed from the outset that cannot be opened. The same applies to automobiles in which In summer there is only an incentive, windows and sunroof closed to hold, or not to provide a sunroof at all, if a pleasant temperature is ensured by cooling instead of draft can be. The combination of the cooling device and the ozone catalyst appears therefore as the only sensible way to check the ozone content in rooms and keep cabins low.

Dabei wird der Ozon-Spaltkatalysator vor der Kältemaschine angeordnet. Das hat den Vorteil, dass er mit relativ warmer Luft beaufschlagt wird, was für den Wirkungsgrad günstig ist. Bei einer Anordnung des Katalysators im Strömungsweg hinter der Kältemaschine wäre das anders: Dort würde der Katalysator durch die vorbeiströmende kalte Luft unterkühlt, seine Umsetzungsrate würde sinken und es würde sich Kondenswasser auf dem Katalysator bilden, welches zu einem weiteren Absinken der katalytischen Umsetzungsrate führen und Korrosionsprobleme nach sich ziehen würde.The ozone catalyst is placed in front of the chiller. This has the advantage that relatively warm air is applied to it, which is favorable for the efficiency. It would be different if the catalytic converter were arranged in the flow path behind the chiller: There, the catalytic converter would be undercooled by the cold air flowing past, its conversion rate would decrease and condensation water would form on the catalytic converter, which would lead to a further decrease in the catalytic conversion rate and corrosion problems would entail.

Um die Wirksamkeit des Katalysators zu erhalten, ist in vorteilhafter Weiterbildung der Erfindung vorgesehen, im Strömungsweg vor dem Katalysator ein Staubfilter vorzusehen.To maintain the effectiveness of the catalyst is in advantageous development of the invention is provided, a dust filter in the flow path in front of the catalytic converter to provide.

Die Erfindung eignet sich besonders für Automobile und kleine Klimageräte, wie sie zur Klimatisierung kleiner Ladengeschäfte und Praxen Verwendung finden.The invention is particularly suitable for automobiles and small air conditioners, such as those used for air conditioning small Find shops and practices.

Als katalytisch aktive, das Ozon spaltende Substanz wird Palladium verwendet, welches schon ohne zusätzliche Beheizung ausreichend aktiv ist. Die katalytisch wirksame Substanz wird in an sich bekannter Weise oberflächlich auf einem Träger verankert, welcher luftdurchlässig ist, z.B. auf einem keramischen Wabenkörper, auf einem Körper aus geschichtetem Wellblech oder auf kreuzweise gestapelten Drahtgittern. Der Strömungswiderstand und damit Art und Dicke des Trägers sind an den Einsatzort anzupassen, wohingegen die Anströmfläche entsprechend dem im Kühlgerät vorhanden Platz gewählt werden kann. Zweckmässigerweise baut man den Spaltkatalysator in Modulbauweise, und zwar in der Weise, dass man mehrere flache, untereinander gleich dicke Träger in einen Halterahmen einbaut. Die Träger, die vorzugsweise gleich sind, können dann für unterschiedliche Anwendungen vorgefertigt und in Rahmen eingesetzt werden, die dem Einsatzzweck angepaßt sind. Bei dem Rahmen kann es sich um ein einfaches Gittertragwerk handeln, in welches die Träger lose eingelegt und durch einen Gegenrahmen fixiert werden. Es hat sich als besonders günstig erwiesen, die Träger zwischen 10 und 30 mm dick zu wählen, vorzugsweise ca. 15 mm dick. Für höheren Wirkungsgrad kann man mehrere solche Lagen von Trägern hintereinander anordnen in einem gemeinsamen Rahmen oder in getrennten Rahmen, die wiederum zu einem Modul zusammengefaßt werden.As a catalytically active substance that will split ozone Palladium used, which already without additional heating is sufficiently active. The catalytically active substance is superficially on a Anchored support that is permeable to air, e.g. on a ceramic honeycomb body, on a body made of layered Corrugated iron or on crosswise stacked Wire mesh. The flow resistance and thus type and The thickness of the carrier must be adapted to the place of use, whereas the inflow surface corresponds to that in the cooling unit available space can be selected. Conveniently you build the gap catalyst in modular design, in such a way that you have several flat, one below the other installs beams of the same thickness in a holding frame. The carriers, which are preferably the same, can then prefabricated for different applications and in Frames are used that are adapted to the purpose are. The frame can be a simple one Act lattice structure in which the beams are loose inserted and fixed by a counter frame. The carrier has proven to be particularly favorable choose between 10 and 30 mm thick, preferably approx. 15 mm thick. For higher efficiency one can use several arrange such layers of supports one behind the other in a common framework or in separate frameworks, which in turn are combined into a module.

Ein Ausführungsbeispiel der Erfindung ist in den beiliegenden Zeichnungen dargestellt.

Figur 1
zeigt schematisch einen Längsschnitt durch ein Kühlgerät, und
Figur 2
zeigt die Draufsicht auf einen in Modulbauweise hergestellten Spaltkatalysator.
An embodiment of the invention is shown in the accompanying drawings.
Figure 1
shows schematically a longitudinal section through a cooling device, and
Figure 2
shows the top view of a modular catalytic converter manufactured.

Figur 1 zeigt ein kompaktes Klimagerät mit länglichem, quaderförmigem Gehäuse 1 mit einer Ansaugseite 2 am einen Ende und einer Luftaustrittsseite 3 am anderen Ende und dazwischen angeordnet eine Kältemaschine 4, einen Ventilator 5, einen Spaltkatalysator 6, ein Staubfilter 7 und an der Auslaßseite eine Jalousie 8 aus verstellbaren Lamellen. Der Katalysator 6 befindet sich zwischen dem Staubfilter 7 auf der Eingangsseite und dem Ventilator 5, welcher die Luft durch den Katalysator 6 hindurch ansaugt und über die Kältemaschine 4 drückt. Die von der Ansaugseite 2 kommende, noch relativ warme und durch das Staubfilter 7 gereinigte Luft strömt durch den Katalysator 6, in welchem das Ozon zu Sauerstoff umgesetzt wird, und wird anschließend in der Kältemaschine 4 gekühlt.Figure 1 shows a compact air conditioner with an elongated, cuboid housing 1 with a suction side 2 at one End and an air outlet side 3 at the other end and in between arranged a refrigerator 4, a fan 5, a gap catalyst 6, a dust filter 7 and at the On the outlet side, a blind 8 made of adjustable slats. The catalyst 6 is located between the dust filter 7 on the input side and the fan 5, which the Air sucks in through catalyst 6 and over the refrigerator 4 presses. From the intake side 2 coming, still relatively warm and through the dust filter 7 cleaned air flows through the catalyst 6, in which the ozone is converted to oxygen, and is then cooled in the refrigerator 4.

Wie Figur 2 zeigt, ist der Katalysator 6 in Modulbauweise hergestellt. Er besteht aus einem Kunststoffrahmen 9, in welchem durch kreuzweise angeordnete Stege 11 neun gleiche Felder gebildet sind, in welchem jeweils ein Katalysatorträger 10 gehalten ist. Zwei solche Rahmen 9 sind hintereinander angeordnet und zur Bildung des Katalysators 6 zusammengefaßt.As FIG. 2 shows, the catalytic converter 6 is of modular construction manufactured. It consists of a plastic frame 9, in which by cross-arranged webs 11 nine same fields are formed, in which one Catalyst carrier 10 is held. Two such frames 9 are arranged one behind the other and to form the Catalyst 6 summarized.

Claims (5)

  1. Small breathing air cooling appliance for use in automobiles and air-conditioning applications in small stores and practices, having an air intake side (2), an air outlet side (3), a fan (5) and a refrigerating machine (4) between the intake and the outlet sides, wherein an unheated ozone-cracking catalyst (6) containing palladium as the ozone-cracking substance is arranged upstream of the refrigerating machine (4).
  2. The cooling appliance as defined in Claim 1, wherein a dust filter (7) is arranged on the intake side and the cracking catalyst (6) is connected between the dust filter (7) and the refrigerating machine (4).
  3. The cooling appliance as defined in one of the preceding Claims, wherein the substance used for cracking the ozone is fixed to a flat air-permeable carrier (10) and a plurality of carriers (10) are held one beside the other in a frame (9).
  4. The cooling appliance as defined in one of the preceding Claims, wherein the carriers (6) have a thickness of 10 mm to 30 mm, preferably 15 mm.
  5. The cooling appliance as defined in Claim 3 or Claim 4, wherein two or three carriers (6) are arranged one behind the other.
EP94111055A 1993-07-15 1994-07-15 Breathing air cooling appliance Expired - Lifetime EP0635685B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9310495U 1993-07-15
DE9310495U DE9310495U1 (en) 1993-07-15 1993-07-15 Cooling device for breathing air

Publications (2)

Publication Number Publication Date
EP0635685A1 EP0635685A1 (en) 1995-01-25
EP0635685B1 true EP0635685B1 (en) 2000-09-27

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EP94111055A Expired - Lifetime EP0635685B1 (en) 1993-07-15 1994-07-15 Breathing air cooling appliance

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EP (1) EP0635685B1 (en)
AT (1) ATE196682T1 (en)
DE (2) DE9310495U1 (en)
ES (1) ES2151912T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616903B2 (en) 1995-01-20 2003-09-09 Engelhard Corporation Method and apparatus for treating the atmosphere

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2206435A1 (en) 1995-01-20 1996-07-25 Michael Spencer Pollutant treating device located in vehicle compartment for cleaning ambient air
US6818254B1 (en) 1995-01-20 2004-11-16 Engelhard Corporation Stable slurries of catalytically active materials
US6156283A (en) 1998-03-23 2000-12-05 Engelhard Corporation Hydrophobic catalytic materials and method of forming the same
US6375905B1 (en) 2000-02-11 2002-04-23 Engelhard Corporation Corrugated metal substrate and coated product for ozone conversion
RU2161567C1 (en) * 2000-06-07 2001-01-10 Кутьев Анатолий Анатольевич Method of air cleaning from harmful impurities and device for its embodiment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133652A (en) * 1976-05-25 1979-01-09 Makio Ishikawa Electronic air conditioner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348360A (en) * 1979-11-05 1982-09-07 Minnesota Mining And Manufacturing Company Catalytic converter for ozone removal in aircraft
BE881318A (en) * 1980-01-24 1980-05-16 Beer Henri B DESOZONISATOR
US4990313A (en) * 1990-01-12 1991-02-05 American Ultra Air, Inc. Ultraviolet device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133652A (en) * 1976-05-25 1979-01-09 Makio Ishikawa Electronic air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616903B2 (en) 1995-01-20 2003-09-09 Engelhard Corporation Method and apparatus for treating the atmosphere

Also Published As

Publication number Publication date
ES2151912T3 (en) 2001-01-16
DE59409538D1 (en) 2000-11-02
EP0635685A1 (en) 1995-01-25
DE9310495U1 (en) 1993-12-02
ATE196682T1 (en) 2000-10-15

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