Instant heating machine and water production control method thereof

Abstract

The embodiment of the invention discloses an instant heating machine and a water production control method thereof. The method comprises the steps that a control table of water temperature in a heating body of the instant heating machine is obtained; the control meter comprises the water outlet flow speed, the heating power and/or the mains supply voltage corresponding to the condition that the water temperature in different temperature intervals is increased by x DEG C every time; x is a positive number; according to the corresponding relation between the water temperature and the water outlet flow speed in the control table, the current water outlet flow speed is adjusted to the water outlet flow speed corresponding to the set target water temperature; a control table is adopted to control the water production process, and after it is detected that the actual water temperature meets the preset condition, the water temperature is finely adjusted through a PID control scheme. According to the scheme of the embodiment, the instant heating machine is controlled based on the control table and the PID control scheme in a fine adjustment mode, the control table is mainly used, a good temperature control effect is achieved, fine adjustment is carried out through the PID control scheme, temperature deviation caused by the inconsistency problem of accessory batch is solved, the whole machine achieves an ideal temperature control effect, and user experience is improved.

Description

technical field [0001] This article relates to the control technology of instant heat equipment, especially an instant heat machine and its water production control method. Background technique [0002] The instant hot water dispenser is a fast-heating and temperature-controllable drinking water device emerging in the market. There are two main control methods for instant hot water dispensers on the market: one is the instant hot water dispenser based on PID (proportional, integral, differential) control. Type water dispenser, one is an instant water dispenser based on experimental test tabulation control. [0003] However, there are certain defects in these two control methods: [0004] 1. For instant water dispensers based on PID control, due to too many temperature control variables of the instant heat machine, there is a certain hysteresis in the heating device of the heat machine, which makes it difficult to select the three parameters of proportional, integral, and di...

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Problems solved by technology

[0004] 1. For instant water dispensers based on PID control, due to too many temperature control variables of the instant heat machine, there is a certain hysteresis in the heating device of the heat machine, which makes it difficult to select the three parameters of proportional, integral, and differential in PID. And the final hot water heating effect and user experience are not ideal;

[0005] 2. The way of tabulation can get good results on one machine, but in actual production, due to the different consistency of accessories, the temperature control effect actually achieved by the tabulation method will be different from that achieved in the laboratory. There is a certain deviation in the temperature control effect, so that the final user experience cannot achieve the ideal effect achieved by the laboratory

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