JPH03123644A - Constant temperature bath - Google Patents

Abstract

PURPOSE:To prevent a delay in temp. rise by providing a deflecting plate at the entrance of an air inlet. CONSTITUTION:A deflecting plate 4 for regulating the amt. of gas flow is provided at the entrance of each of air inlets 5 arranged in a series on one side of an inner bath 6. The size or mounting angle of the deflecting plate 4 is so adjusted as to produce a uniform amt. of the gas flow into the inner bath 6, i.e. by gradually decreasing the size of the deflecting plate 4 from the highest to the central one and by increasing the size thereof from the central to the lowest one. The other side of the inner bath 6 is provided with air outlets 7, through which the gas is run out from the inner bath 6 and sent up along the wall of an outer bath and the collected gas is heated by a heater 1 and sent back to the air inlets 5 by an air blower 2. This allows the gas to flow into the inner bath in a uniform amt.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermostatic oven, and particularly to a thermostatic oven with a double structure.

[Conventional technology]

As shown in Figure 2, the conventional double-structure thermostat has an outer tank 3.
The gas between the inner tank 6 and the inner tank 6 is heated by the heater 1, and is sent by the blower 2 toward an air intake hole 5 provided on one side of the inner tank 6, and introduced into the inner tank 6 through the air intake hole 5. The gas exhausted from the exhaust hole 7 provided on the other side of the inner tank 6 is sent to the heater 1.
The gas is reheated and circulated, and the temperature of the heater 1 is controlled by a temperature controller 9 based on the temperature of the gas detected by a thermocouple 8.

[Problem to be solved by the invention]

In the above-mentioned conventional constant temperature chamber, the flow rate of gas flowing in from the intake hole varies depending on the location, and as shown in Figure 3, the temperature rise time differs depending on the intake hole locations A, B, and C. Since part A, which is the point closest to the part A, is a blind spot, there is a drawback that the flow rate is small and the temperature rise time is delayed.

[Means to solve the problem]

The constant temperature bath of the present invention includes an inner tank provided inside an outer tank, an intake hole provided on one side of the inner tank for introducing heated gas into the inner tank, and an intake hole provided on one side of the inner tank to introduce heated gas into the inner tank, and an intake hole provided on one side of the inner tank to introduce heated gas into the inner tank. A double-structure constant temperature bath having an exhaust hole provided on the side for exhausting gas in the inner tank, has a deflection plate provided at the entrance of the intake hole.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

As shown in FIG. 1, a deflection plate 4 for adjusting the flow rate of gas is attached to the inlet of intake holes 5 arranged on one side of an inner tank 6 provided inside an outer tank 3.

Here, the deflection plate 4 is arranged on the side surface of the inner tank 6 such that the size of the deflection plate 4 is small at the center and larger toward the upper and lower ends to make the flow rate of the gas flowing into the inner tank 6 uniform. The installation angle is adjusted. An exhaust hole 7 is provided on the other side of the inner tank 6, and the gas flowing out from the inner tank 6 is collected along the wall of the outer tank and heated by the heater 1.
is sent to the intake hole 5. The thermocouple 8 detects the temperature of the gas sent to the intake hole 5 and sends the data to the temperature controller 9, and the temperature controller 9 controls the amount of heat generated by the heater 1 based on the data.

Incidentally, instead of being attached to the entrance of the air intake hole 5, the deflection plate 4 may be held in a state slightly floating above the air intake hole 5.

〔Effect of the invention〕

As explained above, the present invention provides a deflection plate at the entrance of the air supply hole of the inner tank, and the deflection plate adjusts the inflow direction and flow rate of the gas introduced into the inner tank. This has the effect of making the flow rate uniform and eliminating non-uniformity in the temperature rise time within the inner tank.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is a schematic diagram showing an example of a conventional thermostatic oven, and Fig. 3 shows the temperature rise characteristics at parts A, B, and C of a conventional thermostatic oven. FIG. 1...Heater, 2...Blower, 3...Outer tank, 4...
... Deflection plate, 5 ... Intake hole, 6 ... Inner tank, 7 ...
Exhaust hole, 8... thermocouple, 9... temperature controller.

Claims (1)

[Claims] an inner tank provided inside the outer tank; an intake hole provided on one side of the inner tank for introducing heated gas into the inner tank;
A thermostatic oven with a double structure having an exhaust hole provided on the other side of the inner tank to exhaust gas in the inner tank, characterized in that the thermostatic oven has a deflection plate provided at the entrance of the intake hole. .