Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1987-05-20
1989-01-10
Tolin, G. P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
16510433, 174 161, 174 35R, 361424, H05K 720
Patent
active
047977825
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE INVENTION
The present invention relates to an arrangement for one or more inner units enclosing electronic components, the inner unit or units being disposed in at least one substantially aseptically sealed space within an outer unit. The electronic components are disposed on assembly boards edge-stacked in the inner unit(s).
One of the contemplated fields of utilization of the present invention is in sighting equipment, in particular ground-based sighting equipment. Such sighting equipment may be employed in conjunction with FEBA ammunition equipment and primarily should consist of portable equipment, which entails that its overall weight must be kept to a minimum.
Such sighting equipment includes an optical section which must be kept dust-free within the sighting unit. The optical section cooperates with an electronic section which is of complex construction and function.
One indispensible requirement place on such sighting equipment is to keep its outer dimensions at a minimum. This entails, for instance, high packing density for the components in the electronic equipment. This in turn involves problems as far as heat generation is concerned. Excessive heat can damage vital components in the sighting equipment.
Summary of the Invention
The about-outlined problems involved in weight and space entail difficulties in disposing the requisite electronics and optics so as to obtain a high degree of functional reliability, meeting the stringent demands placed on the sighting equipment.
One of the primary objects of the present invention is to solve the structure problem as outlined above. The concept forming the basis of the present invention is, here, that the electronics be disposed in the same space as the optical section which, in and of itself, must be allocated an as good as aseptic (for example dust-free) space.
According to the novel arrangement the present invention a cooler unit is provided with an air heat exchanger operative to cause, in the above-mentioned space, circulation of the inner air in the space and to lead the inner air past the electronic components and the heat exchanger; and to lead outer air located outside the outer unit through the heat exchanger and thereby, by means of the outer air, to reduce the inner air temperature or to keep this temperature at a reduced level.
The cooler unit is to be disposed together with one or more inner units in the above-mentioned space, may be mounted together in series with the inner unit. In such cases that as involve two or more inner units, the interconnected modules make a row which is placed along the one inner bounding side of the outer unit. Preferably, each respective inner unit and the cooler unit are separated by filters against electromagnetic impulse. At its free end, the outermost located inner unit in the row is, in such an instance, also provided with a filter of the above-mentioned type. Such filters are known in this art and may consist of so-called honeycomb filters. In the present case, a characteristic feature of the filter is that it allows passage of inner air for cooling the electronic components, at the same time constituting an effective barrier to sn electromagnetic interference (EMI).
The present invention further embraces the concept of how the upright stacked boards are to be applied in each respective inner unit. Thus, it is possible to employ frames which each carry two boards disposed in parallel on either side of the frame. The frame, and the two boards carried thereby, are disposed such that the circulated inner air may pass on either side of each respective board. This function may be attained in that the frame is constructed of cross-pieces of reduced cross section, thus making for the passage of inner air.
One embodiment of the present invention also considers the arrangement and disposition of the external electric connection to the electronic components disposed within the units. Each respective inner unit may include an EMI disturbance-free connection unit. One preferred embodiment of the pr
REFERENCES:
patent: 3364838 (1968-01-01), Bradley
patent: 3467892 (1969-09-01), Sprude
patent: 3608280 (1971-09-01), Martin
patent: 4315300 (1982-02-01), Parmerlee et al.
patent: 4352274 (1982-10-01), Anderson
patent: 4386651 (1983-06-01), Reinhard
patent: 4600050 (1986-07-01), Noren
Derwent's Abstract Imanov G457/4C/30*SU-700-941, 12/5/79.
IBM Technical Disclosure Bulletin, vol. 8, No. 11, Apr. 1966, "Counter-Flow Cooling System" R. C. Chu.
Aktiebolaget Bofors
Tolin G. P.
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