Temperature control system for tap heating

Abstract

The invention discloses a temperature control system for tap heating. The temperature control system for tap heating comprises a 220V alternating-current power supply, an AC / DC conversion unit, a signal acquiring and processing unit, a reference source signal comparison circuit, a control unit and a heater, wherein the AC / DC conversion unit adopts a nonlinear switch power supply mode, and provides direct-current voltage for the reference source signal comparison circuit, the signal acquiring and processing unit and the control unit, the signal acquiring and processing unit acquires a temperature and processes the acquired signal, and the heater is controlled to carry out intelligent heating after the signal obtained by the signal acquiring and processing unit is transmitted to the control unit by the reference source signal comparison circuit. The system adopts the nonlinear power supply mode to improve the stable direct-current voltage and controls the work of the heater through comparing the acquired temperature with reference source voltage, thereby being simple in control structure, safe to use and high in work efficiency and truly reaching an intelligent level.

Description

technical field [0001] The invention relates to an intelligent heating control system, in particular to a temperature control system for faucet heating. Background technique [0002] People often need to use hot water in their lives. Hot water needs to flow from the water heater through the pipeline to the faucet before it can be used. However, the water heater is relatively bulky and requires installation space, so it is not conducive to large-scale installation and layout. With the continuous development of science and technology With the progress, the instant hot faucet has entered people's life. In this instant faucet, the heater is controlled by the control system to heat the water temperature. The heater is a large current load, which can reach 20A when it is working. At present, the heating method of the existing faucets on the market is based on the premise of heating with full power, and the temperature of the water is controlled by changing the size of the water fl...

AI Technical Summary

Problems solved by technology

[0002] People often need to use hot water in their lives. Hot water needs to flow from the water heater through the pipeline to the faucet before it can be used. However, the water heater is relatively bulky and requires installation space, so it is not conducive to large-scale installation and layout. With the continuous development of science and technology With the progress, the instant hot faucet has entered people's life. In this instant faucet, the heater is controlled by the control system to heat the water temperature. The heater is a large current load, which can reach 20A when it is working. At present, the heating method of the existing faucets on the market is based on the premise of heating with full power, and the temperature of the water is controlled by changing the size of the water flow through the valve. However, when the valve is fixed and the flow of water is constant, with the The increase of working hours will inevitably lead to the continuous rise of the temperature of the outlet water, which will affect the use of users. This will not only consume electricity, but may cause burns due to excessive temperature of the outlet water, and may cause serious consequences such as fires due to unrestricted heating and burning out the product. Therefore, in recent years, the research on intelligent heating controllers by major companies and research institutions is in the ascendant. For example: the patent number is 201110179671.5, and the patent name is intelligent instant hot water faucet. The circuit control device mainly includes: CPU control circuit, leakage protection circuit , temperature display circuit, power conversion circuit, temperature acquisition circuit, over-temperature alarm circuit, keyboard control circuit and constant temperature control circuit, etc. The advantage of the method of changing the power to control the heating tube in this scheme is that it can be controlled according to the set temperature. Controlling the water temperature reduces the inrush current of the heating tube, which can prolong the service life of the heating tube, thereby improving the service life of the circuit control system. However, this control circuit is controlled by a CPU, and the circuit components are many, the cost is relatively high, and there are many circuit modules. At the same time, the power conversion circuit adopts a simple conversion mode, so that the peripheral protection circuit must be used to protect the overall structure, and the design structure is complex, so it needs to be improved.

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