Drinking machine with zero-pressure hot tank and method for controlling drinking machine

Abstract

The invention discloses a drinking machine with a zero-pressure hot tank and a method for controlling the drinking machine, and belongs to the technical field of drinking machines. The drinking machine and the method are designed for solving the problem of deficiency of zero-pressure hot tanks for existing devices. The drinking machine with the zero-pressure hot tank comprises a water outlet pipe, the hot tank and a wastewater pipe. The water outlet pipe is connected to a water outlet end of the hot tank, the wastewater pipe is arranged between an inlet and an outlet of the water outlet pipe in a connected manner, and a wastewater electromagnetic valve is arranged on the wastewater pipe; heated and expanded water in the hot tank can flow through partial pipelines of the water outlet pipe and then can be drained via the wastewater pipe when the hot tank is in a heating state and the outlet of the water outlet pipe is closed. The method for controlling the drinking machine includes communicating the hot tank with the air via the partial pipelines of the water outlet pipe and the wastewater pipe when a value of the internal pressure of the hot tank is larger than zero and the outlet of the water outlet pipe is closed. The drinking machine with the zero-pressure hot tank and the method for controlling the drinking machine have the advantages that the hot tank can be assuredly always in a zero-pressure state, accordingly, crack on a tank body of the hot tank due to cyclic fatigue stress can be completely eradicated, and potential safety hazards can be eliminated.

Description

technical field [0001] The invention relates to the technical field of direct-drinking machines, in particular to a hot-pot zero-pressure direct-drinking machine and a control method for the direct-drinking machine based on the hot-pot zero-pressure direct-drinking machine. Background technique [0002] The direct drinking machine is a device that filters and heats tap water, and the filtered and heated water can be directly drunk. One of the core devices of the direct drinking machine is the hot tank assembly, in which the water is heated. During the heating process, water will generate high pressure due to expansion, and these high pressures will act on the hot tank components, resulting in potential safety hazards for the hot tank components. [0003] In order to reduce the pressure on the hot tank assembly, a pressure reducing device is provided on the existing direct drinking machine. Specifically, such as figure 1 As shown, the direct drinking machine includes a dra...

AI Technical Summary

Problems solved by technology

[0004] Regardless of whether the capillary 1201 is used to form the liquid drainer 12 or the outlet end of the hot tank 2 is provided with a pressure relief valve assembly 16, but since the capillary 1201 and the pressure relief valve assembly 16 have their own thresholds, these solutions can only be used to a certain extent. Reducing the pressure in the hot tank 2 cannot achieve zero pressure in the hot tank 2, and still cannot completely eliminate the safety hazard of the hot tank 2

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