A pressure-discharging one-way valve and a water dispenser

Abstract

The invention discloses a pressure-discharging one-way valve, which is installed between a cold tank and a hot tank of a water dispenser. The pressure-discharging one-way valve includes a casing, and a cavity is formed in the casing. A water inlet and a water outlet connected to the cavity are provided on the casing, the water inlet is connected to the cold tank, the water outlet is connected to the hot tank, and a ejector rod and a water outlet are arranged in the cavity. A reciprocating and slidable valve core, the ejector rod is arranged between the valve core and the water outlet, and the valve core is provided with a pressure relief hole running through both ends thereof, wherein: when the water pressure comes from the cold tank, the valve core It is separated from the water inlet, and the valve core abuts against the ejector rod; when the water pressure comes from the hot tank, the valve core is pressed against the water inlet, and the hot tank exhausts or releases pressure to the cold tank through the pressure discharge hole. The invention not only realizes the pressure discharge function, but also effectively saves the inner space of the water dispenser and reduces the product cost.

Description

technical field [0001] The invention relates to drinking water equipment, in particular to a pressure-discharging check valve and a water dispenser. Background technique [0002] Water dispenser in the prior art such as image 3 As shown, it includes a cold tank 100 and a hot tank 102. A one-way valve 103 is installed between the cold tank 100 and the hot tank 102. This check valve 103 can prevent the hot water in the hot tank 102 from flowing backwards. When 102 is in the water-filled state, if the heating is continued, the pressure in the hot tank 102 will be too high due to thermal expansion of the water and steam will be generated, and problems such as water spraying from the water outlet and poor water flow will be caused by excessive pressure during normal water intake. Under long-term use conditions, it not only affects the life of the hot tank, but also has the potential for bursting. In order to exhaust and relieve the pressure on the hot tank, a pressure relief pip...

AI Technical Summary

Problems solved by technology

[0002] Water dispenser in the prior art such as image 3 As shown, it includes a cold tank 100 and a hot tank 102. A one-way valve 103 is installed between the cold tank 100 and the hot tank 102. This check valve 103 can prevent the hot water in the hot tank 102 from flowing backwards. When 102 is in the water-filled state, if the heating is continued, the pressure in the hot tank 102 will be too high due to thermal expansion of the water and steam will be generated, and problems such as water spraying from the water outlet and poor water flow will be caused by excessive pressure during normal water intake. Under long-term use conditions, it not only affects the life of the hot tank, but also has the potential for bursting. In order to exhaust and relieve the pressure on the hot tank, a pressure relief pipe 104 is usually installed on the top of the hot tank 102 to facilitate the pressure relief of the hot tank 102. However, this structure Not only takes up space, but also increases product cost

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