Liquid medium thermostatic tank

The utility model discloses a liquid medium constant temperature groove, consisting of a mixing motor, a single groove body consisted of an internal bladder and a casing, a heater, a evaporator, a mixing device, a temperature controller, a cover plate, and a temperature sensor, a working groove and a mixing groove are separated by a blocking plate in the single groove body, the working groove and the mixing groove are connected with the space between the blocking plate and the single groove body through the space between the blocking plate and the cover plate; the evaporator, the heater, and the mixing device are fixed in the mixing groove; the temperature sensor is fixed on the cover plate, the temperature sensing head is arranged under the blocking plate, one or a plurality of constant temperature blocks is or are arranged on an outflow opening near to the liquid medium. A vertical temperature sensor rabbet is arranged on the constant temperature block, the rabbet is a blind hole, and the upper part is connected with the outside. The utility model liquid medium constant temperature groove, having simple structure, good constant temperature effect, low fabrication cost, the constant temperature block is arranged, the constant temperature test requirements of the temperature sensor of different specification and different dimension and the small pilot sample which can not be immersed in the liquid can be met.