Claims
- 1. A sealer for sealing heat weldable tubing by forming a weld across the tubing, said sealer comprising in combination:
- (a) a housing;
- (b) a fixed jaw located external to said housing;
- (c) a moveable jaw cooperatively associated with said fixed jaw to form on command a weld across the tubing placed therebetween;
- (d) first heat sink means for supporting said fixed jaw and for dispersing heat generated during welding of the tubing;
- (e) a circuit board for supporting an oscillator circuit which generates electromagnetic energy to heat of the tubing;
- (f) a heat sink plate secured to said circuit board for dispersing heat generated by the components of the oscillator circuit;
- (g) a second heat sink means for supporting said heat sink plate and for dissipating by convection to ambient air heat from said heat sink plate;
- (h) means for securing said second heat sink means to said housing whereby said circuit board is segregated from said housing to minimize heat transfer therebetween;
- (i) a power supply, including several components dispersed within said housing, for supplying electrical power to the operative elements of said sealer;
- (j) a third heat sink means for dissipating heat to ambient air external of said housing;
- (k) means for attaching the components of said power supply to said third heat sink means to urge heat transfer therefrom to said third heat sink means by conduction; and
- (l) a fourth heat sink means for transfering heat by conduction from said first heat sink means to said third heat sink means;
- whereby, the heat generated during operation of said sealer is channeled to ambient air through said first, second, third or fourth heat sink means to prevent heat build up within said housing and discourage an above ambient rise in temperature of said housing.
- 2. The sealer as set forth in claim 1 wherein a further circuit board containing control circuitry is affixed to said fourth heat sink means.
- 3. The sealer as set forth in claim 2 wherein one of said components comprises a transformer and wherein said attaching means comprises a plate disposed intermediate and in contacting relationship to the laminated core of the transformer and said third heat sink means.
- 4. The sealer as set forth in claim 3 wherein said fourth heat sink means comprises a C channel having a web interconnecting two flanges.
- 5. The sealer as set forth in claim 4 wherein said first heat sink means is attached to one of said flanges, said further circuit board is attached to said web and the other of said flanges is attached to said third heat sink means.
- 6. The sealer as set forth in claim 5 wherein said third heat sink means comprises the bottom of said housing and feet for maintaining the bottom above a supporting surface to allow air flow therebetween.
- 7. The sealer as set forth in claim 1 wherein said securing and segregating means includes a cut out in one side of said housing of a size larger than said circuit board for receiving said circuit board and attachment means extending from said one side proximate said cut out to said second heat sink means.
- 8. The sealer as set forth in claim 7 wherein said second heat sink means comprises a finned radiator.
- 9. The sealer as set forth in claim 8 wherein said heat sink plate is dimensioned to correspond in length and width with said circuit board.
Parent Case Info
This is a division, of now U.S. Pat. No. 4,490,548 application, Ser. No. 429,272, filed Sept. 30, 1982.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4013860 |
Hosterman et al. |
Mar 1977 |
|
4186292 |
Acker |
Jan 1980 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
429272 |
Sep 1982 |
|