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THERMAL TRANSFER TECHNIQUES FOR A PORTABLE RADIOGRAPHIC DEVICE

IP.com Disclosure Number: IPCOM000191444D
Publication Date: 2010-Jan-05
Document File: 6 page(s) / 51K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention provides a technique for efficient thermal transfer in a radiographic device such as, radiographic detectors among others. An internal air circulation system is provided in the radiographic device for lowering temperatures of the internal components, panel, and the cover thereof. Further, the present technique also reduces the thermal resistance to the external ambient, and hence improves the overall reliability of the radiographic device.

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AUTHORS: HABIB VAFI, AND NICHOLAS KONKLE

IP.COM PUBLICATION NUMBER: XXXXXXXXXX

IP.COM PUBLICATION DATE: XXXXXXXXX

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THERMAL TRANSFER TECHNIQUES FOR A PORTABLE RADIOGRAPHIC DEVICE

FIELD OF INVENTION

The invention generally relates to radiographic devices and more particularly to a thermal transferring technique in a portable radiographic device.

BACKGROUND OF THE INVENTION

Various types of radiographic devices, such as radiographic detectors are generally known in the art. Further, it is well known to have portable units for radiography. However, in many instances, the conventional units have been found to be less than satisfactory. In some instances, the conventional radiographic detectors have reduced operational efficiency due to their higher temperatures. In view of the fact, that the panel assembly for URP (Universal Rad Platform) and other future products in RAD and Mammo will be floating and moving relative to the cover. Hence, it is desirable to restrict the use of thermal interface materials between the panel assembly i.e. on the motherboard and the back cover.

As such, the electronic components are relatively insulated and are prone to overheating which consequently causes the overheating of a detector array, the panel and the cover or the external case. This is because the components are not conducting the heat away to the external ambient through direct contact, whereas the internal assembly moves relative to the external covers.

Conventional techniques are using the thermal interface materials to conduct heat away from the back cover. The drawback of these conventional techniques is that the thermal interface material must shear significantly to allow motion of the panel assembly to reduce g-loads (G loads) to the fragile panel. This introduces unreliability and possible performance degradation.

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Hence there exists a need for a thermal transferring technique that efficiently cools the internal assembly of the portable radiographic device.

BRIEF DESCRIPTION OF THE INVENTION

The invention provides a technique for efficient thermal transfer in a radiographic device such as, radiographic detectors among others. The technique provides increased thermal transfer by increasing the heat transfer coefficient from the electronic chips to the internal ambient, and from the internal ambient to the inside of the enclosure. Thereby, reducing the thermal resistance to the external ambient and lowering the component, panel, and the cover temperatures.

DETAILED DESCRIPTION OF THE INVENTION

The present technique provides an efficient thermal transfer by circulating the air inside the radiographic devices such as, radiographic detectors among others. Further, the thermal transfer is increased by increasing the heat transfer to the external ambient without exchanging air with the external ambient.

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