| CPC A47J 27/21091 (2013.01) [A47J 27/21066 (2013.01); A47J 27/21083 (2013.01); A47J 27/21166 (2013.01); G01F 1/74 (2013.01); A47J 2202/00 (2013.01)] | 3 Claims |
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1. A continuous boiling water preparation method based on gas-liquid two-phase object detection, comprising the following steps of:
step 1: continuously obtaining a cold water flow from an outside of a device by using a flow regulator (1), and injecting the cold water flow into a water inlet of a heater;
step 2: making the heater (2) heat up according to heating power provided by a heat controller (3A), so that the water flow flowing through an interior of the heater is heated until a water outlet of the heater obtains a continuous gas-liquid two-phase flow in a boiling state;
step 3: by connecting a two-phase object detection sensor (5) and a temperature sensor (4) behind the water outlet of the heater (2), obtaining a gas-liquid ratio signal and a temperature signal respectively, and transmitting the signals to the heat controller (3A); and
step 4: comparing, by the heat controller (3A), the received gas-liquid ratio signal with a reference signal set in the heat controller (3A) to obtain a deviation, then calculating a control signal, and outputting the control signal subjected to power amplification by a heating power driver to the heater (2), so as to realize real-time continuous regulation of the heating power, and finally realize continuous boiling water preparation; wherein,
during boiling water preparation, when the signal of the two-phase object detection sensor indicates that a liquid content of a gas-liquid two-phase object is lower than a set threshold, it is indicated that a water dispenser is short of water or subjected to water gasification, and the heat controller (3A) regulates the heater (2) and the flow regulator (1);
mounting positions of the heater (2), the temperature sensor (4) and the two-phase object detection sensor (5) satisfy that: the temperature sensor (4) is mounted at the water outlet of the heater (2), and a mounting distance is within a set threshold range I; the two-phase object detection sensor (5) is mounted at a back end of the temperature sensor (4), and a mounting distance is also within a set threshold range II; and when the heater (2) and the two-phase object detection sensor (5) are mounted, water flows in interiors of the heater and the two-phase object detection sensor are upwardly vertical to a ground;
the two-phase object detection sensor (5) is composed of four core components: a light emitter (5-1), a light-transmitting circular pipe (5-2), a convex lens (5-3) and a photosensitive detector (5-4); and the four core components are fixed in a mounting box body, and the light emitter (5-1), the light-transmitting circular pipe (5-2), the convex lens (5-3) and the photosensitive detector (5-4) are from right to left during assembly; and
the light-transmitting circular pipe (5-2) is connected with a pipeline of the water dispenser, so that the gas-liquid two-phase object of the water dispenser statically remains in or dynamically flows through the light-transmitting circular pipe (5-2); and a light beam from the light emitter (5-1) enters the light-transmitting circular pipe (5-2), and forms a strip-shaped light beam through a condensing action of a cylindrical lens, and then the strip-shaped light beam forms a spot-shaped light beam through a condensing action of the convex lens (5-3), and finally reaches the photosensitive detector (5-4) and is converted into an output electric signal.
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