Intelligent heat-preserving pot cover and heat-preserving method thereof

A heat-preserving method, comprising:

• providing an intelligent heat-preserving pot cover, comprising a cover body, wherein a top portion of the cover body is connected with a temperature control body, a ventilation hood is arranged between the cover body and the temperature control body, a through hole is arranged at the top portion of the cover body, the temperature control body is provided with a heating tube and an ultraviolet lamp tube via a mounting column passing through the through hole, a water tank is arranged in the temperature control body, and a spray pipe is led out of the water tank and passes through the through hole;
• and the temperature control body is provided with a temperature sensor, a humidity sensor and a controller, and the controller is configured for controlling the heating tube, the ultraviolet lamp tube and the spray pipe to work according to data of the temperature sensor and the humidity sensor;
• detecting, by the temperature sensor, a temperature in the pot, and when the temperature in the pot is lower than a preset minimum heat-preserving temperature value, controlling, by the controller, the heating tube to start operation, and when the temperature in the pot is higher than a preset maximum heat-preserving temperature value, controlling, by the controller, the heating tube to stop operation;
• detecting, by the humidity sensor, a humidity in the pot, when the humidity in the pot is lower than a preset minimum humidity value, controlling, by the controller, the spray pipe to start spraying, and when the humidity in the pot is higher than a preset maximum humidity value, controlling, by the controller, the spray pipe to stop spraying;
• and
• when the spray pipe starts spraying, controlling, by the controller, the ultraviolet lamp tube to turn on, and after the spraying is finished, controlling, by the controller, the ultraviolet lamp tube to automatically turn off after maintaining a predetermined time.