(19)
(11) EP 0 235 807 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.01.1989 Bulletin 1989/01

(43) Date of publication A2:
09.09.1987 Bulletin 1987/37

(21) Application number: 87103055.7

(22) Date of filing: 04.03.1987
(51) International Patent Classification (IPC)4: F24F 13/00
(84) Designated Contracting States:
AT BE DE ES FR GB IT LU NL SE

(30) Priority: 05.03.1986 CH 907/86

(71) Applicant: Hammes, Klaus Peter
CH-9403 Goldach (CH)

(72) Inventor:
  • Hammes, Klaus Peter
    CH-9403 Goldach (CH)

(74) Representative: Frankland, Nigel Howard et al
FORRESTER & BOEHMERT Franz-Joseph-Strasse 38
80801 München
80801 München (DE)


(56) References cited: : 
   
       


    (54) A device for monitoring pollution in air


    (57) Existing air handling systems often incorporate an internal filter which tends to be poorly maintained due to it being located in an inaccessible region of the system where it may not readily be replaced or readily be inspected. A device for monitoring pollution in air flowing through an air handling system comprises a frame (2) and a filter (3) releasably mounted within the frame (2). The frame (2) is adapted to be mounted upon the periphery of an air inlet or outlet of an air handling system so that the filter (3) extends across the air inlet or outlet. The device is arranged such that when mounted in position upon the air handling system, the filter (3) may readily be inspected by occupants within a room in which the device is located and the amount of pollution on the filter (3) indicates the operating efficiency of the filter in the air handling system. If necessary the filter (3) may be quickly and simply replaced.







    Search report