JPS6366578B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-shaking constant temperature oil bath.

Conventionally, chemical reactions, dissolution, etc. have been carried out under arbitrary temperature conditions using oil baths in physical and chemical experiments. In the constant-temperature oil tank used at this time, the container containing the sample is fixed in oil, and the oil in the tank is heated by a heater and is flowed by a stirrer to conduct heat. However, in such a constant-temperature oil tank, the fluidity of the oil is rapid near the agitator and slow in areas far away, and the oil is not uniform within the tank. Therefore, the heating state of the oil also becomes uneven depending on the location. Furthermore, if it is necessary to stir the sample, it is necessary to provide a stirrer for the sample, and when a plurality of samples are placed in an oil bath at the same time, a plurality of the stirrers are required.

Recently, we have corrected the uneven heating state in the oil tank, eliminating the need for a stirrer for the sample, and connecting the shaking frame to the piston without causing the heating oil to flow, allowing the sample to reciprocate from side to side in the heating oil. A constant-temperature oil bath has been developed that uniformizes the heating state around the sample by heating the sample. However, in such constant-temperature oil baths, a sample container is attached to a shaking frame, and after being placed in oil except for the vicinity of the container attached to the shaking frame, heating and shaking are performed for a certain period of time, and at the end of the heating and shaking, the sample is heated and shaken. The experimenter must manually remove the container, and if there are multiple sample containers, the heating time (reaction time) will not be constant between the beginning and the end. Furthermore, when reagents are added to multiple sample containers during heating of the sample heated in the oil bath, the reagent addition time for the first sample and the last sample is different, so the conditions must be the same. It is something that cannot happen.

The inventors of the present invention have conducted intensive studies to solve this problem, and have incorporated a control unit including a timer into the constant temperature oil tank to arbitrarily set the start and end times of shaking (or heating). We found a constant-temperature oil bath in which a sample container attached to a shaking device is immersed in oil by the automatic lowering of the shaking device, and can be moved onto the oil surface by the automatic lifting of the shaking device immediately after shaking (or heating) is finished. The invention has been completed.

That is, the present invention has a shaking device to which a sample container can be attached, and the sample container can be moved onto or into the oil surface of an oil tank by moving the shaking device up and down,
In addition, the shaking number and shaking time of the shaking device can be arbitrarily set, and furthermore, the sample container can be moved into the oil just before the shaking starts and moved onto the oil surface immediately after the shaking is finished by operating the shaking device. The present invention provides an automatic shaking type constant temperature oil bath.

The automatic shaking type constant temperature oil tank of the present invention mechanically immerses the sample containers in the oil by lowering the shaking device just before the start of shaking (or heating), so it is possible to attach a large number of sample containers to the shaking device without immersing them in oil. In particular, if the oil is heated, the heating conditions for each sample container can be made the same. In addition, since the constant temperature oil bath mechanically moves each sample container onto the oil surface at the end of the shaking (or heating) period, the heating conditions for each sample container can be made the same, and reagents can be added to each sample container midway through. In this case, the addition to each sample container can be carried out under uniform conditions.

The shaking device installed in the constant-temperature oil bath of the present invention has a plurality of sample containers attached thereto, and is shaken by a motor, and the number of shaking is appropriately adjusted by adjusting the rotational speed of the motor and the shaking time by adjusting the timer. Also, the device mechanically moves down to move the sample container into the oil just before shaking or heating begins, and mechanically moves up to move the sample container onto the oil surface immediately after shaking or heating ends. You can force it. It should be noted that the device is usually preferably a frame to which a plurality of sample containers can be attached and which is directly connected to a motor that causes shaking, but of course other devices may also be used.

The constant-temperature oil tank of the present invention can automatically stop heating and shaking the sample by setting a timer, so the experimenter does not have to constantly worry about when the heating and shaking of the sample are finished. This has the advantage of not having to be heated.

In addition, the constant temperature oil bath of the present invention is usually shaken 50 to 120 times.
It is used under the conditions of times/min, amplitude of 1 to 50 mm, and oil temperature of room temperature to 150°C, but of course, the size of the constant temperature oil tank,
By changing the variable speed motor and oil, the above conditions can be varied. Moreover, the oil used is preferably silicone oil, for example. Furthermore, the constant temperature oil bath of the present invention may be equipped with a stirrer in the oil, and other sample containers may be equipped with a stirrer.

Next, the constant temperature oil tank of the present invention will be explained based on the drawings. FIG. 1 is a partially cutaway view of the side surface of the constant temperature oil tank, showing the shaking frame 2 with the sample container 3 attached.
A state in which the sample container 3 is moved downward along the shaking frame vertical guide shaft 6 by the power cylinder 5 so as to be immersed in the oil 4 heated by the heater 7 in the oil tank 1 is shown. Also, Figure 2 is a plan view of the constant temperature oil tank.
A movable shaft 8 is connected to the shaking frame 2 and transmits shaking generated from an automatic control section 9 that includes a variable speed motor, a timer, a temperature controller, etc.

[Brief explanation of drawings]

Figure 1 is a partially cutaway view of the side of the constant temperature oil tank.
FIG. 2 is a plan view of the constant temperature oil tank. 1...oil tank, 2...shaking frame, 3...sample container, 4...
Oil, 5... Power cylinder, 6... Shaking frame vertical guide shaft, 7... Heater, 8... Movable shaft, 9
...Automatic control section.

Claims (1)

[Claims] 1. It has a shaking device to which a sample container can be attached, and the sample container can be moved onto or into the oil surface of the oil tank by moving the shaking device up and down, and the shaking frequency and shaking time of the shaking device can be adjusted. An automatic shaking constant-temperature oil bath that can be set arbitrarily and is further characterized in that by operating a shaking device, a sample container can be moved into the oil immediately before shaking starts, and moved onto the oil surface immediately after shaking ends.