Switching valve, circulating booster water heater and water heater circulating pressurization system

Abstract

The invention discloses a switching valve, a circulating booster water heater and a water heater circulating pressurization system. The switching valve comprises a shell, and a valve element part, theshell is provided with a first fluid inlet, a second fluid inlet and a fluid outlet, the valve element part is mounted in the shell and can reciprocate between the first fluid inlet and the second fluid inlet, the valve element part comprises an impeller and a valve plug which are connected, according to the switching valve, the valve element part with an impeller can achieve the function of automatically closing the second fluid inlet when the fluid flows towards the fluid outlet from the first fluid inlet, the switching valve can be used for the switching valve of the circulating booster water heater, when water is output at the water using end, the water returning path is closed, hot water in the water returning path is prevented from being drawn back to the water heater, and the circulating booster water heater with the switching valve and the water heater circulating pressurization system have the same effect.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a switching valve, a circulating pressurized water heater and a water heater circulating pressurized system. Background technique [0002] Such as figure 1 As shown, the main function of the non-return pipe circulating water heater in the prior art is to use the circulating pump 11' to pump the cold water (return water) in the pipeline back to the water heater 12' for heating, so that when the user boils the water, it becomes hot water. When utilizing its circulating pump 11' to pressurize the water flow, the boosting effect is not obvious because of the influence of the circulating loop. When the hot water is turned on at the water end 13', cold water enters the water heater 12'. At this time, the circulating pump 11' is turned on. Due to the return water path, part of the hot water is pumped back to the water heater 12', resulting in no obvious boosting effect. The water end 13 '...

AI Technical Summary

Problems solved by technology

When the circulation pump 11' is used to pressurize the water flow, the effect of the pressurization is not obvious due to the influence of the circulation loop

When the hot water is turned on at the water end 13', cold water enters the water heater 12'. At this time, the circulating pump 11' is turned on. Due to the return water path, part of the hot water is pumped back to the water heater 12', resulting in no obvious boosting effect. The water end 13 'The outgoing hot water does not increase much, and because part of the hot water is pumped back to the water heater 12', the temperature of the incoming water becomes higher, which affects the temperature control of the water heater

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