Reversing valve and water mixing device for water heater and water heater

Abstract

The invention discloses a reversing valve and a water mixing device for a water heater and the water heater. The reversing valve comprises a valve body, a first valve element and a second first valveelement, wherein the valve body is provided with a water inlet, a first water outlet, a second water outlet, a first action cavity and a second action cavity; the first valve element is movably arranged in the first action cavity between a first position and a second position; the second valve element is movably arranged in the second action cavity between an initial position and a reversing position and is in linkage with the first valve element, and when the first valve element is located at the first position and the second valve element is located at the initial position, the second valveelement only communicates with the water inlet and the first water outlet so as to feed water into a water storage container; and when the first water outlet is disconnected from the water storage container, the first valve element moves to the second position and drives the second valve element to move to the reversing position, and the second valve element only communicates with the water inletand the second water outlet. According to the reversing valve for the water heater, the zero cold water function of the water heater is facilitated to be achieved. In addition, the reversing valve issimple in structure and high in reliability.

Description

technical field [0001] The present invention relates to the technical field of water heaters, in particular, to a reversing valve for water heaters, a water mixing device for water heaters with the reversing valve for water heaters, and a water mixing device for water heaters with the reversing valve for water heaters. The water heater of the device. Background technique [0002] Water heaters with the function of "zero cold water" in the related art usually use a water pump to circulate the water in the hot water pipe for preheating, so that users can directly use hot water. Among them, the water heater with a return pipe uses the return pipe and the hot water pipe to form a circuit, and the water heater without a return pipe constructs a circuit through a device with a one-way valve like an "H valve". [0003] However, both of the above two methods require a water pump, the interior of the water heater needs matching pipe fittings for the water pump, and the controller pa...

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Problems solved by technology

[0003] However, both of the above two methods require a water pump, the inside of the water heater needs matching pipe fittings for the water pump, and the controller part also needs components related to the water pump, and the matching cost is relatively high; at the same time, parts like "H valves" are required to build the circuit , many installation procedures

[0004] In addition, 70% of the users do not install the return water pipeline. These users will use the cold water pipe and the "H valve" to build a circuit. During the circulation process, there will be hot water flowing through the cold water pipe. If the hot water flows out, the user may be scalded; at the same time, when the user is connected to other water treatment products (such as a water purifier), if the water temperature in the cold water pipe exceeds 38°C, it may directly cause damage to the RO membrane of the water purifier.

[0005] In addition, during the cycle preheating process, there will be unneeded waterways being heated, waste gas, and no energy saving; moreover, due to the small circulation flow, there is a requirement for the minimum temperature rise of the water heater, otherwise, the inlet water temperature will be higher in summer Occasionally, it will be overheated and cannot be used

In addition, some users cannot use the "zero cold water" function due to the aging pipeline and high pipeline resistance, resulting in a small circulation flow

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