Runner structure for improving temperature field index of thermostatic bath

Abstract

The invention provides a runner structure for improving the temperature field index of a thermostatic bath. The runner structure comprises a bath cavity inner container, a stirring unit, a flow guide unit and a heater, wherein the interior of the bath cavity inner container is divided into a stirring cavity and a working cavity through a vertically-arranged middle partition plate, and gaps for a heat transfer medium to pass through are reserved between the upper end and the lower end of the middle partition plate and the upper end and the lower end of the bath cavity inner container; the main parts of the stirring unit and the heater are located in the stirring cavity; the flow guide unit is arranged in the working cavity and installed on the middle partition plate; and the flow guide unit comprises a front flow guide cylinder and a spiral flow guide cover, the front flow guide cylinder and the spiral flow guide cover are vertically installed to form an integrated structure, the spiral flow guide cover is fixed to the lower end of the front flow guide cylinder, and a propeller blade mechanism is installed in the spiral flow guide cover. During operation of the runner structure, one part of the heat transfer medium spirally ascends to enter the front guide cylinder after passing through the propeller blade mechanism, and the other part of the heat transfer medium enters an interlayer between the front flow guide cylinder and the inner cavity wall of the working cavity through a guide hole in the outer top end of the spiral flow guide cover.

Description

Technical field [0001] The present invention relates to the field of constant temperature tanks, and more particularly to a flow path structure for improving the thermostat temperature field indicators. Background technique [0002] The constant temperature groove is used to provide a constant temperature test environment, commonly used to verify all kinds of temperature sensors. With the development of society, there is a new requirement for the calibration of the temperature sensor. The existing constant temperature tank thermostat indicators are poor and difficult to meet market demand. The current constant temperature groove structure is more than the side stirring structure, the main body is a single groove cavity, and the lumine is divided into two cavities, working cavities and stirring cavities by the intermediate separator. The flow direction of the medium is from top to bottom in the agitation chamber, from bottom to top. The conventional constant temperature tank is us...

AI Technical Summary

Problems solved by technology

The circulating channel structure used in the existing constant temperature tank is relatively simple, the uniformity of the heat transfer medium inside the constant temperature tank is not good, the temperature uniformity and fluctuation index of the constant temperature tank are low, and the temperature calibration work that cannot meet the high standard requirements

[0003] Chinese patent application CN 101116835 A discloses a constant temperature tank for constant temperature experiments. In this patent, the tank body is divided into two cavities, one of which is used as a working area, and a stirring paddle is installed in the other cavity to form A single cycle of medium, but in this patent, the flow direction of the medium inside the working area is still one-way flow, which cannot guarantee the effective mixing of the medium

In this patent, there is a partition between the heating part and the heat transfer medium, and the exchange channel of the hot and cold medium is only provided through the drainage hole, the heating efficiency is low, and it is not convenient to effectively control the temperature

[0006] Chinese patent CN 206372851 U discloses a constant temperature tank stirring mechanism, including a constant temperature tank, a motor and a flow guide assembly. The output shaft of the motor extends vertically into the constant temperature tank and is connected with an extension shaft through a coupling. Fan blades strengthen the stirring strength of the heat transfer medium, but all fan blades have an inclination angle of 45°, which can only advance the heat transfer medium axially and increase the flow rate, and cannot achieve radial mixing of the heat transfer medium well

Images