(19)
(11) EP 0 967 841 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.05.2000 Bulletin 2000/18

(43) Date of publication A2:
29.12.1999 Bulletin 1999/52

(21) Application number: 99660105.0

(22) Date of filing: 08.06.1999
(51) International Patent Classification (IPC)7: H05B 6/78, H05B 6/72
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 25.06.1998 FI 981463

(71) Applicant: ELMATEC OY
00810 Helsinki (FI)

(72) Inventor:
  • Taipale, Esko
    01200 Vantaa (FI)

(74) Representative: LEITZINGER OY 
Ruoholahdenkatu 8
00180 Helsinki
00180 Helsinki (FI)

   


(54) Portable microwave drying apparatus


(57) The invention relates to a portable drying apparatus for drying structures by means of microwaves. The apparatus includes a housing (1) which is divided by a partition (13) into two compartments, one being provided with a magnetron (4) and the other functioning as an application chamber (2) for radiation. The magnetron (4), along with its drive circuit, operating switch (5) and wave tube (7), is picked up from a home microwave oven for exploiting the economics of scale. In order to homogenize radiation and to block back reflection, the application chamber (2) is provided with a metal reflector cone (9), supported by a dielectric plate (10) and having its apex pointing towards a transmission aperture (8) of the wave tube (7).






Search report