U.S. Philips Corporation

Koninklijke Philips Corporation N.V.

Lothar Weil

Rolf Behling

Heinz-Jurgen Jacob

Rolf Golitzer

The present invention relates to a device for generating X-rays having a source for emitting electrons, a carrier which is provided with a material which generates X-rays as a result of the incidence of electrons, and a bearing by means of which the carrier is journalled so as to be rotatable about an axis of rotation, the device further having a chamber that is bounded by a heat transferring surface of the carrier and by a heat transferring surface of the first bearing member, and that is at least partially filled with a heat transferring material, the material being urged, during operation, towards both heat transferring surfaces so that a relatively high rate of heat transfer is obtained between the heat transferring surfaces and the transferring material, which is not affected when the transferring surfaces thermally deform at relatively high temperatures because the transferring material will follow deformations of the heat tranferring surfaces such that the reduction of the overall rate of heat transfer is limited.

Device for generating X-rays

An anode of a rotary-anode X-ray tube is connected to a bearing portion which is rotatable about an axis of rotation and which cooperates with the stationary bearing portion in which there is provided a cavity which extends in the direction of the axis of rotation and whose side walls can be cooled by means of a cooling medium. Effective cooling, in combination with a small pressure drop of the cooling medium, is achieved in that there is provided a cooling member which serves to produce an essentially laminar cooling medium flow and which consists of a number of lamellae which extend essentially parallel to the axis and which are in thermal contact with the side walls of the cavity.

Rotary-anode X-ray tube comprising a cooling device

An X-ray tube includes an anode member having a cylindrical cavity connectable to a cooling medium flow. A cooling device (14) in the cavity distributes the cooling medium with turbulent flow and which comprises a tube (141) on the outer faces of which there are mounted spaced apertured cooling medium guide discs (142, 144) constructed so that the cooling medium flows around the tube over the discs and through their apertures in the space between the anode member (8) and the tube (141).

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Hamburg, Germany

Lothar Weil