| 发明名称 |
Method of making a foam insulated water heater |
| 摘要 |
A method of insulating a water heater with an expandable foam insulating material. The expandable foam insulating material has an initial viscosity of <300 cps, a flow index>/=about 0.7, a gel index>/=about 0.8 and generates a maximum pressure of</=about 1.0 psig. The foam is injected into the annular space between the water tank and the outer jacket. Preferably, the foam is injected into a sleeve, which acts to confine the foam during its most liquid state, positioned within this space. The foam is preferably injected into the annular space between the tank and the jacket while the top cover is removed. In this way, the injected foam can be distributed more evenly around the circumference of the tank.
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| 申请公布号 |
US4904428(A) |
申请公布日期 |
1990.02.27 |
| 申请号 |
US19850743422 |
申请日期 |
1985.06.11 |
| 申请人 |
BRADFORD-WHITE CORPORATION |
发明人 |
WEST, EUGENE L.;MARCINKEWICZ, ROBERT J. |
| 分类号 |
B29C33/12;B29C44/18;F24H1/18 |
主分类号 |
B29C33/12 |
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