초록 ▼

A window for a domestic oven is described which has a reduced thermal transmission so that the outer glass surface, which can be toughed, is maintained at an acceptable temperature. Between the surface of an outer glass sheet and an inner glass sheet of the window there is a rare gas filled enclosed

A window for a domestic oven is described which has a reduced thermal transmission so that the outer glass surface, which can be toughed, is maintained at an acceptable temperature. Between the surface of an outer glass sheet and an inner glass sheet of the window there is a rare gas filled enclosed volume. Preferably at least the inner facing surface of the outer glass sheet is coated with a transparent layer of reflecting material. A non-evaporable getter material is contained within said enclosed volume.

대표청구항 ▼

An observation window comprising: A. an outer glass sheet having an outer facing surface and an inner facing surface, the inner facing surface covered by a layer of material reflecting infra-red radiation and transmitting visible light and; B. an inner glass sheet having an outer facing surface and

An observation window comprising: A. an outer glass sheet having an outer facing surface and an inner facing surface, the inner facing surface covered by a layer of material reflecting infra-red radiation and transmitting visible light and; B. an inner glass sheet having an outer facing surface and an inner facing surface and; C. a distancing wall the edges of which are peripherally attached to both the outer glass sheet and the inner glass sheet thus defining an enclosed volume and; D. a glass pumping tubulation attached to the distancing wall and; E. a rare-gas contained within the enclosed volume at a pressure of between 10 and 1000 mbar at 25°C. An oven comprising: I. an enclosure; and II. a door providing access to the enclosure; and III. means for heating the enclosure; and IV. an observation window within the door; said window comprising: A. an outer glass sheet having an outer facing surface and an inner facing surface, the inner facing surface covered by a layer of material reflecting infra-red radiation and transmitting visible light and; B. an inner glass sheet having an outer facing surface and an inner facing surface and; C. a distancing wall the edges of which are peripherally attached to both the outer glass sheet and the inner glass sheet thus defining an enclosed volume and; D. a glass pumping tubulation attached to the distancing wall and; E. a rare-gas contained within the enclosed volume at a pressure of between 10 and 1000 mbar at 25°C.