Oxygen concentration regulation and control device for bean sprout breeding room

The utility model discloses an oxygen concentration regulating and controlling device for a bean sprout growing chamber, which relates to the field of bean sprout growing and comprises a drying and moisture-exchanging box, a controller and a heat exchanger, and the drying and moisture-exchanging box is divided into a drying cavity and a humidifying cavity through a gas partition plate which is transversely fixed inside the drying and moisture-exchanging box. An inner gas inlet pipe, an outer gas discharge pipe, an inner gas discharge pipe and an outer gas inlet pipe are respectively connected and mounted on four heat exchange pipe orifices of the heat exchanger, a filter box is mounted at the tail end of the outer gas inlet pipe, the controller is fixed on the drying and moisture exchange box, the controller is in communication connection with an oxygen concentration sensor, and the oxygen concentration sensor is in communication connection with the controller. The tail end of the inner gas inlet pipe is conn