Heat exchange – With impeller or conveyor moving exchange material – Mechanical gas pump
Patent
1989-06-19
1990-09-11
Schwadron, Martin P.
Heat exchange
With impeller or conveyor moving exchange material
Mechanical gas pump
165 51, 123 4149, 4152191, F01P 1110
Patent
active
049554344
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a radiator assembly and in particular to a cowl assembly for such a radiator assembly.
It is known for a radiator assembly to have a cowl assembly secured to it by means of bolts passing through the cowl, each bolt being engageable with a nut fixed to a casing of the radiator assembly.
The use of such a method of attachment has the disadvantage that it is time consuming to fit or remove the cowl from the radiator and hence costly.
According to a first aspect of the invention there is provided a cowl assembly for a radiator comprising a duct portion to direct cooling air towards or away from a fan and at least two securing means on one end of said duct portion to secure said cowl assembly to a radiator by co-operation with opposite ends thereof, the arrangement being such that in a first unlocked position a part of each securing means can pass over the adjacent end of the radiator and in a second locked position said part of each securing means is unable to pass over the adjacent end of the radiator with which it is engaged thereby preventing separation of the cowl assembly from the radiator, the transition from said first position to said second position being acheived by rotation of said cowl assembly relative to said radiator.
This has the advantage that the cowl assembly can be quickly and cheaply fitted and also requires no fixing points to be accurately positioned on the radiator.
Preferably, each securing means is a U-shaped member having a bridge portion and two limbs one of which is connected to said duct portion.
Advantageously, said cowl assembly further includes locking means to selectively retain said securing means in said second locked position.
The locking means may be an arm extending radially away from said duct portion which is adapted at its free end for attachment to a header tank of the radiator.
The arm may be adapted by having a slot formed therein through which an attachment bolt can be passed.
Advantageously, the cowl assembly may be a plastics moulding, the duct portion and the two securing means being formed as an integral part thereof.
According to a second aspect of the invention there is provided a radiator assembly including a cowl assembly according to the first aspect of the invention, the radiator assembly further including an inlet header tank, an outlet header tank and a heat exchange matrix connected therebetween, the heat exchange matrix having two end faces used to secure said cowl assembly thereto.
The invention will now be described by way of example with reference to the accompanying drawing of which:
FIG. 1 is a rear view of a radiator assembly according to a second aspect of the invention having a cowl assembly according to a first aspect of the invention attached to it;
FIG. 2 is a view on the line A--A on FIG. 1;
FIG. 3 is a scrap exploded view of part of the radiator assembly shown in FIG. 1.
With reference to FIGS. 1 to 3 there is shown a radiator assembly 11 having a heat exchange matrix 12 in the form of tubes 13 and corrugated finning 14, a plastic inlet header tank (not shown), a plastic outlet header tank 15, an upper side plate 16, a lower side plate 17 and a cowl assembly 20.
The structure of the matrix 12 is conventional in construction, the tubes 13 extending between the inlet and outlet header tanks 15 with the corrugated finning 14 packed in between.
The cowl assembly comprises a duct portion 21, a locking means in the form of an arm 34 extending radially outwardly from the duct portion 21 and two securing means in the form of upper and lower lugs 22 and 23.
The cowl assembly is a plastics moulding, the duct portion 21 and the upper and lower lugs 22 and 23 being formed as an integral part thereof.
The upper lug 22 is U-shaped in cross-section having a bridge portion 24 to span an end of the matrix 12 and two limbs 25,26. One of the limbs 25 extends radially outwardly from a position of juncture with the duct portion 21 to join the bridge portion 24 and is strengthened by means of a web 27. The free limb 26 has a free end
REFERENCES:
patent: 3795274 (1974-03-01), Fieni
patent: 4185688 (1980-01-01), Wiater et al.
patent: 4662822 (1987-05-01), Foeldesi et al.
patent: 4685513 (1987-08-01), Longhouse et al.
Flanigan Allen J.
Gordon David P.
Llanelli Radiators Limited
Schwadron Martin P.
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