Electric hot-water bag provided with overvoltage protective device
An overvoltage protection device and electric hot water bag technology, which is applied in the direction of heating appliances for treatment, cooling appliances for treatment, contraceptives, etc., and can solve the problems of bag cracking and explosion, and bag edge welding is not firm, etc.
Inactive Publication Date: 2013-10-16
台州赛博汽车设计有限公司
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Problems solved by technology
The expansion of the gas in the bag will cause another problem, that is, the welding edge of the edge of the bag is not firm, and the expansion of the gas in the bag will cause the bag to crack and explode
Method used
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Embodiment Construction
[0019] The present invention will be further described below in conjunction with accompanying drawing.
[0020] Such as figure 1 , 2 As shown, the electric hot water bag with an overvoltage protection device includes a bag body 1, and a conductive liquid is injected into the bag body 1. A charging stand 2 is arranged on the bag body 1. A temperature controller (not shown in the figure) is installed inside, and an overvoltage protection device 3 is arranged on the bag body 1. The overvoltage protection device 3 includes a decompression base 4, and the decompression base 4 has a concave fixing hole 41. The upper edge 42 of the decompression base is welded and fixed to the bag body 1. The bottom of the fixing hole 41 has an outlet 43 communicating with the inner cavity of the bag. The decompression valve body 5 is in interference fit with the fixing hole 41. The upper part of the decompression valve body is The pressure relief pressure preset hole 51 has a steel ball positionin...
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The invention discloses an electric hot-water bag provided with an overvoltage protective device. The electric hot-water bag comprises a bag body, wherein the bag body is filled with an electric conduction liquid and provided with a charging stand and the overvoltage protective device; the overvoltage protective device comprises a voltage-reducing base which is provided with an inwards recessed fixing hole, an outlet communicated with an inner cavity of the bag body is formed in the bottom of the fixing hole, a reducing valve body is in clearance fit with the fixing hole, a pressure presetting hole for pressure relief is formed in the upper position inside the reducing valve body, a steel ball positioning hole is formed in the middle of the reducing valve body, and a steel ball guiding hole is formed in the lower end of the steel ball fixing hole; and the pressure presetting hole, the steel ball positioning hole, the steel ball guiding hole and the outlet of the fixing hole in the base form a mutually communicated channel, and after a steel ball enters into the positioning hole from the guiding hole, the steel ball is fixedly arranged in the reducing valve body by a spring, so that the hot-water bag can be effectively prevented from bursting, and the hot-water bag is safer.
Description
technical field [0001] The invention relates to a rechargeable hot water bag, in particular to an electric hot water bag with an overvoltage protection device. Background technique [0002] Electric hot water bag is people's warm treasure in cold winter and is very popular. The electric hot water bag heats the liquid in the bag by charging, and the gas in the bag will expand after heating. Common explosion-proof devices are usually equipped with a thermostat. When the temperature in the bag reaches a predetermined value, the thermostat will automatically trip and power off. Some even set up two thermostats to pass through the control to prevent accidents caused by thermostat failure. The expansion of the gas in the bag will cause another problem, that is, the welding edge of the bag body edge is not firm, and the gas in the bag will cause the bag to crack and explode after the gas expands. Generally, the bag body is bonded by PVC cloth and the plastic layer of the inner wa...
Claims
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IPC IPC(8): A61F7/08
Inventor 潘育富
Owner 台州赛博汽车设计有限公司