Automatic pressure control device capable of preventing explosion of hot water bottle constantly

Abstract

The invention discloses an automatic pressure control device capable of preventing explosion of a hot water bottle constantly. The automatic pressure control device disclosed by the invention is characterized in that a pressure reduction cabin is arranged outside a bag body of a common hot water bottle, and the pressure reduction cabin and the bag body are connected through a pressure controller; the pressure controller comprises a tube-shaped shell, a ball baffle cover, and a sealing ball, a piston and a spring which are arranged in the shell; a vent hole and an air inlet are formed at the tail end of the shell and the ball baffle cover, respectively; an air bleeding valve is arranged on the pressure reduction cabin; under a normal state, the sealing ball baffles the air inlet on the ball baffle cover which is connected with the shell under action of the spring, and the pressure controller is in a closed state; when pressure intensity in the hot water bottle body is increased to a rated value due to heating or an external force, the sealing ball is pushed away from the air inlet, air or redundant liquid in the bottle enters the pressure controller from the air inlet, then enters the pressure reduction cabin via the vent hole, and is finally discharged at the air bleeding valve till internal pressure and external pressure are balanced, and the air inlet is sealed again by the sealing ball due to action of the spring. The automatic pressure control device disclosed by the invention has the greatest characteristics of being capable of controlling pressure intensity in the hot water bottle to be within a safe range constantly so as to ensure safety of a user.

Description

technical field [0001] The invention relates to the technical field of necessities for human life, in particular to an automatic voltage control device capable of preventing explosions of hot water bags. Background technique [0002] Hot water bags have become an indispensable daily necessities for more people to use for heating or physical therapy. However, when people use it, because the hot water bag is heated or squeezed by an external force, the pressure generated by the liquid or gas in the bag will suddenly increase, and when the pressure in the bag exceeds the capacity of the bag, it will explode. Therefore, accidents of hot water bags scalding the human body occur from time to time, which has caused very serious safety hazards to our users. Contents of the invention [0003] In order to completely avoid the above-mentioned serious problem that the hot water bag is easy to explode, the patent of the present invention discloses an automatic pressure control device ...

AI Technical Summary

Problems solved by technology

However, when people use it, because the hot water bag is heated or squeezed by an external force, the pressure generated by the liquid or gas in the bag will suddenly increase, and when the pressure in the bag exceeds the capacity of the bag, it will explode. Therefore, accidents of hot water bags scalding the human body occur from time to time, which has caused very serious safety hazards to our users.

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