Small-sized water heater

Abstract

The invention discloses a small-sized water heater which comprises a water inlet pipe, a pressure maintaining valve, a flow regulating valve, a heating water tank and a water outlet pipe. The pressuremaintaining valve comprises a valve body; a valve seat, a valve element and a ventilation piece are arranged in the valve body; the valve body respectively communicates with the water inlet pipe andthe flow regulating valve; the valve seat clings to the inner wall of the water inlet end of the valve body; a gap is left between the valve seat and the inner wall of the water outlet end of the valve body; a water inlet chamber is arranged in the valve seat and is provided with a water passing hole; water sequentially passes through the water inlet chamber and the water passing hole so as to flow into the water outlet end of the valve body from the water inlet end of the valve body; the valve element comprises a sleeve and a spring sleeved in the sleeve; one end of the sleeve sleeves outsidethe valve seat; the sleeve is driven through water pressure so as to move to adjust the opening size of the water passing hole; one end of the ventilation piece is slidably connected with the sleeve;the other end of the ventilation piece is fixedly connected with the valve body; a ventilation hole is formed in the ventilation piece; one end of the ventilation hole communicates with the sleeve; and the other end of the ventilation hole communicates with the outer part of the valve body.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a small water heater. Background technique [0002] A water heater refers to a device that raises the temperature of cold water into hot water within a certain period of time through various physical principles. According to different principles, it can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic energy water heaters, air energy water heaters, heating water heaters, etc. The heating water tank of the existing instant-type small-sized water heater is generally directly connected with the tap water pipe through the water inlet pipe, and the tap water flowing in is heated through the heating water tank immediately and then flows out from the water outlet pipe, and no voltage stabilizing device is provided. However, the tap water pressure provided by the water supply system is usually unstable. When the water pressure is too high, t...

AI Technical Summary

Problems solved by technology

However, the tap water pressure provided by the water supply system is usually unstable. When the water pressure is too high, the water flow into the heating water tank is fast and the heating time is short, resulting in low water temperature in the outlet pipe; when the water pressure is too low, the water entering the heating water tank The water flow speed is slow and the heating time is long, resulting in high water temperature in the outlet pipe, which will easily lead to unstable heating of the water heater and affect the heating effect of the water heater

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