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公开(公告)号：US3455061A
公开(公告)日：1969-07-15
申请号：US3455061D
申请日：1967-10-05
Applicant: GEN MOTORS CORP
Inventor： KESLING KEITH K , WATT ROY E
CPC classification number: E05D15/502 , E05D7/081 , E05Y2900/132 , Y10T16/5275 , Y10T16/53605
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公开(公告)号：US3898614A
公开(公告)日：1975-08-05
申请号：US50643074
申请日：1974-09-16
Applicant: GEN MOTORS CORP
Inventor： WATT ROY E
Abstract: The invention relates to a pressure and temperatureresponsive switch particularly adapted for monitoring the condition of an automobile engine cooling system. The switch includes a housing having a cylinder bore in which two free-floating pistons are disposed. The innermost piston adjacent the cooling system of the automobile engages the midpoint of a normally arcuate metal diaphragm member which separates the piston from the cooling system. Above the inner or first piston is an outer or second piston which supports a contact member thereon. The outer end of the housing is closed by a cover member which supports a terminal adapted to be engaged by the contact member to energize a warning signal during periods of engine overheat which will cause the second piston to move towards the cover member. The space between the first and second pistons is filled with a refrigerant such as Freon-22 having a predetermined coefficient of expansion per degree of temperature increase. The space between the second piston and the cover member is filled with a refrigerant such as Freon-12 having a lesser coefficient of expansion than the refrigerant between the pistons. A significant decrease of coolant pressure in the engine will cause the arcuate diaphragm to relax and flatten. Resultantly the innermost piston moves downward against the flattened diaphragm which greatly increases the area of contact therebetween and the rate of heat transfer therebetween. This increase in heat causes the refrigerant between the pistons to expand, thereby forcing the outer piston to move in the housing and to engage the contact and terminal thereby energizing a warning signal indicating an overheat condition of the engine.
Abstract translation: 本发明涉及一种特别适用于监测汽车发动机冷却系统的状况的压力和温度响应开关。 开关包括具有气缸孔的壳体，其中设置有两个自由浮动活塞。 与汽车的冷却系统相邻的最里面的活塞接合在活塞与冷却系统分离的正常弧形的金属隔膜件的中点。 在内部或第一活塞上方是支撑其上的接触构件的外部或第二活塞。 壳体的外端由盖构件封闭，该盖构件支撑适于由接触构件接合的端子，以在发动机过热期间激励警告信号，这将导致第二活塞朝向盖构件移动。 第一和第二活塞之间的空间用诸如氟利昂-22的制冷剂填充，其温度升高程度具有预定的膨胀系数。 第二活塞和盖构件之间的空间填充有比活塞之间的制冷剂具有更小的膨胀系数的诸如氟利昂-12的制冷剂。 发动机冷却液压力的显着下降将导致弧形隔膜松弛并变平。 最终的内部活塞向下移动，相对于扁平隔膜，这大大增加了它们之间的接触面积和它们之间的传热速率。 这种热量增加导致活塞之间的制冷剂膨胀，从而迫使外部活塞在壳体中移动并与接触端子接合，从而激励指示发动机过热状态的警告信号。
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公开(公告)号：US3601463A
公开(公告)日：1971-08-24
申请号：US3601463D
申请日：1970-05-22
Applicant: GEN MOTORS CORP
Inventor： WATT ROY E
CPC classification number: A47B71/00 , F25D17/065 , F25D23/064 , F25D23/069 , F25D2317/0654 , F25D2317/067 , F25D2400/04 , F25D2400/16 , Y10S220/902
Abstract: A refrigerator cabinet having foamed insulation secured to the interior walls thereof and capable of slidably receiving plastic liners of various sizes providing a range of food compartment volumes. The foamed insulation has channel members molded therein for receiving and supporting a divider wall in either horizontal or vertical positions. The plastic liners are formed with a plurality of integral rib members extending from the external surface and terminating in flanges presenting a flat surface for engagement with the insulation. The length of the integral ribs is varied with the size of the food compartment defined by the plastic liner providing rigid support of the liner in the refrigerator cabinet.
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