Water heater control system and water heater
A technology for control systems and water heaters, which is applied to fluid heaters, lighting and heating equipment, etc., can solve the problems of large interference of received frequency signals of single-chip microcomputers, inaccurate water level collection, and inaccurate detection results, so as to reduce the burden of data transmission, The effect of speeding up processing and accurate detection results
Pending Publication Date: 2021-05-25
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +1
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Problems solved by technology
[0003] The detection scheme in the prior art has the following disadvantages: the resistive water level sensor needs to be installed in the water tank, in contact with water, after a long time of contact, the sensor may be corroded and invalidated, and the water level acquisition is inaccurate. The interference is relatively large, and the collection of water level signals is inaccurate
[0005] Although the above scheme discloses the use of the water level detection circuit to collect water level signals and the water temperature detection circuit to collect water temperature signals, it is still directly connected to the central control unit after collecting the water level and water temperature signals, so that the number of water level and water temperature collections is relatively large, and the data of the system is increased. The transmission burden, and the steel needle is in contact with water vapor for a long time in the water heater, which is likely to cause corrosion of the steel needle and make the test result inaccurate. In addition, there is a lot of water vapor in the internal environment of the water heater. Using the method of steel needle contact to detect the water level often results in not accurate enough
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[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.
[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...
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The invention discloses a water heater control system and a water heater. The water heater control system comprises a main control unit and a water level and water temperature control unit, the main control unit is in communication connection with the water level and water temperature control unit, and the water level and water temperature control unit is connected with a water level detection unit and / or a water temperature detection unit; and the main control unit is connected with the water level and water temperature control unit through a BUS communication circuit. The water temperature detection unit and the water level detection unit are integrated on the water level and water temperature control unit, so that the water level detection unit and the water temperature detection unit do not need to be independently connected to the main control unit, the number of water level signals and water temperature signals collected by a load is reduced, the data transmission burden of the system is reduced, the processing speed of the system is increased, and meanwhile, the system is suitable for long-distance communication.
Description
technical field [0001] The invention belongs to the technical field of water heaters, and in particular relates to a water heater control system and a water heater. Background technique [0002] The circuit scheme currently used for solar energy detection of water level is mainly to detect the resistance value of the water level sensor and convert it into frequency for detection. The specific principle is that according to the characteristics of the resistive water level sensor, according to the resistance value of the detection resistance sensor representing different water levels, through the oscillating circuit, it is converted into a pulsed square wave signal recognizable by the circuit MCU, and each water level segment has a square wave of a different frequency segment. signal to detect. [0003] The detection scheme in the prior art has the following disadvantages: the resistive water level sensor needs to be installed in the water tank, in contact with water, after a...
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IPC IPC(8): F24H9/20
CPCF24H9/2007
Inventor 李福梅穆金柱吴恩豪
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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