Multifunctional proportional valve for gas water heater

Abstract

The invention discloses a multifunctional proportional valve for a gas water heater. The multifunctional proportional valve is characterized by comprising a shell with a pipe cavity, a water inflow pipe, a water outflow pipe, a bypass pipe, a drain pipe and a water transfer shaft; the water inflow pipe, the water outflow pipe, the bypass pipe and the drain pipe are communicated with the sides of the pipe cavity; the water transfer shaft is inserted into the pipe cavity; adjacent waterproof discs are arranged on the water transfer shaft; the adjacent waterproof discs tightly make contact with the inner wall of the pipe cavity; a water guiding cavity is formed by the adjacent waterproof discs and the inner wall of the pipe cavity jointly; the water outflow pipe and the bypass pipe are always communicated with the water guiding cavity; when the position of the water transfer shaft in the pipe cavity is changed, one of the water inflow pipe and the drain pipe is communicated with the water guiding cavity. The multifunctional proportional valve is improved based on a traditional water proportional valve; the drain pipe and the water transfer shaft are additionally arranged, so that the water proportional valve has the water use function and the drainage anti-freezing function; the multifunctional proportional valve is suitable for traditional south machine types and north machine types; other structures of the gas water heater do not need to be changed; installation is simple, and use is convenient.

Description

technical field [0001] The invention relates to components for fluid heaters, in particular to a multifunctional proportional valve for gas water heaters. Background technique [0002] Gas water heater is a very commonly used household appliance. At present, no matter what kind of water heater it is, under low temperature conditions, when the residual water inside solidifies, it is easy to freeze and crack the internal coil, resulting in damage to the gas water heater. At present, there are also solutions to this class, such as electric heating and manual drainage. The electric heating method, as the name implies, is to use heating resistors to heat the coil; however, on the one hand, electric heating has potential safety hazards, and on the other hand, it consumes electric energy and other disadvantages. The manual drain valve requires people to perform manual draining in a timely manner, which is accidental and affects user experience and feelings. Contents of the inve...

AI Technical Summary

Problems solved by technology

The electric heating method, as the name implies, is to use heating resistors to heat the coil; however, electric heating has potential safety hazards on the one hand, and consumes electric energy on the other hand.

The manual drain valve requires human beings as the main body to perform manual draining in a timely manner, which is accidental and affects user experience and feelings

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