JPS5976549A - Thermostatic device - Google Patents

Abstract

PURPOSE:To prevent the sharp drop of the temp. in a thermostat device and the disturbance in the temp. distribution thereof and to restore quickly the temp. by providing shielding bodies in a thermostat box body or on storing trays, and shutting off an opening for communicating the inside and the outside between the same and the box body which is produced in the stage of the drawing out of the storing tray. CONSTITUTION:A shielding body 4 is installed in the opening at the front face of a drawable storing tray 2 or a thermostat box body 1 of a thermostat device or in the circumferential wall in the opening of the box body 1. An opening 3 communicating the inside and outside which is formed by the storing part of the tray 2 and the opening of the box body 1 when the tray 2 is drawn from the body 1 is shut off by the body 4. The function as the thermostat device is improved by such mechanism and the electric power consumption required for restoring the drop of the temp. in the device occurring in the intrusion of the atm. air is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new and improved thermostatic apparatus.

Conventional thermostats have multiple sample storage shelves inside and a large opening/closing door attached to the front. The intrusion of outside air causes a sudden drop in the temperature inside the tank and a disturbance in the temperature distribution.It also takes a long time and consumes a lot of power to recover the temperature, which not only causes a decrease in the reliability (accuracy) of measurements, but also causes economic problems. Furthermore, when the door is opened and closed, hot air is blown out, which is not desirable in terms of work safety.

On the other hand, in recent years, in order to solve the above-mentioned problems, a device has been proposed and developed in which a plurality of drawer-type sample storage shelves are provided and the opening/closing door of the conventional thermostatic device is removed. Compared to the single-door type thermostat with this structure, the above-mentioned problems can be solved to some extent, but
It was not complete and certain.

The present invention relates to a new and improved constant temperature apparatus proposed for the purpose of eliminating the disadvantages and drawbacks of the conventional constant temperature apparatus described above. In the constant-temperature device provided with the storage shelf, a shield is provided on the box body and/or the storage shelf to block the internal and external communication opening that occurs between the storage shelf and the box body when the storage shelf is pulled out. This is a characteristic feature.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the entire thermostatic apparatus according to the present invention will be explained in detail based on the accompanying drawings.

Fig. 1 is a 61 perspective view of the entire thermostat according to the present invention, Fig. 2 is a partial perspective view of Fig. I1 when the pull-out storage shelf is slightly pulled out, and Fig. 3 is a partial perspective view of I-9 of Fig. 2. It is a schematic sectional view taken along the I line. In the figure, 1 is a thermostatic box, 2 is a pull-out storage shelf, and 3
4 is an opening, and 4 is a shield.

The most important components in the present invention are rt and L.

The biggest feature of this product is that when the pull-out storage shelf 2 is pulled out from the thermostatic box 1, a shield 4 is provided to block the internal and external communication opening 3 created by the storage section of the storage shelf 2 and the opening of the box 1. However, the shield 4 can be roughly divided into two types depending on where it is installed: one is installed on the storage shelf 2 (middle row in the diagram) and the other is installed on the thermostatic box 1 (upper and lower rows in the diagram). In the latter case, there are two cases: a case where it is provided on the opening surface (front side) of the box body 1 (upper stage), and a case where it is provided within the peripheral wall of the opening part of the box body 1 (lower stage).

For example, the most basic way to provide the front surface is to attach channel-like grooves on both sides of the opening, the length of which is approximately the same as the vertical length of the opening. , a configuration in which a separately prepared plate-like shield slides,
Select and use a shield made of flexible material,
The flexible shield is wound around a rod-shaped body or the like as necessary.
n is fixed to either the top or both sides of the opening, and the shield is pulled out during use, or a flexible shield is attached to the front of the box. It is possible to provide a structure in which it is buried in the depth direction, and when used, it is pulled out and shielded in the same way as above, and the latter two are optional so that the work at the time of pulling out can be carried out easily and reliably. Needless to say, other means (for example, attaching an engaging piece or the like) may be provided.

In addition, the configuration of installing the shield on the storage shelf itself includes, for example, a configuration in which the shield is placed at the rear of the storage shelf, a configuration in which the shield is slidable in the axial direction (back and forth direction) of the storage shelf, or a configuration in which the shield is installed in the back of the storage shelf. An example is a structure in which the shield is fixed at a predetermined position, etc. n1 The slidable mechanism is provided at any position on both end faces of the shield, and is provided with a protrusion in the longitudinal direction and within the circle of the storage shelf. It is possible to provide a structure in which a rail-like member having a groove that stops at the protrusion is attached to each side surface so that the shield can slide without easily falling down.

In addition, if a sliding shield is provided, the number of shields is not necessarily limited to one, but depends on the application,
There is no problem in using multiple sheets depending on the purpose of use.

Furthermore, as a structure for fixing the shield in a predetermined position, one or more groove-like notches are provided at a certain interval on the inner wall and/or the bottom of the storage shelf, and the shield is inserted from above into this groove and fixed. A certain aspect can be obtained.

Furthermore, the shielding body f: As a structure to be provided in the opening surrounding wall of the box body, for example, a slit is cut out in the wall, a plate-shaped shielding body is placed inside this, and a knob is attached to the front side. It is possible to raise a +1 type shade that can be moved up and down from the ground, or a shade that can be pulled out by burying the entire combustible shield in the wall.

Among the structures described above, those other than those in which a shield is placed on the storage shelf can block the opening portion regardless of the dimensions of the drawer when the storage shelf is pulled out. has advantages.

In view of the purpose of the present invention, the size of the shield should be at least equal to the size of the opening or 7n or more.
Although this is not trivial, there are no particular restrictions on the thickness, material, etc.

However, it is necessary to have at least 1 ton of heat-resistant construction.

In addition, in the present invention, when the pull-out storage shelf 2 is pulled out,
It is difficult to create a structure that can maintain horizontality, and this is due to the fact that the opening part is very tightly closed and the samples stored in the storage shelf are damaged when they are removed from the storage shelf. This is to prevent leakage from occurring.

The most suitable configuration for maintaining this horizontal state is
For Jli, the wall thickness around the opening on the entire surface of the box is relatively thin.
A structure that maintains the horizontal state by IL and IL can be mentioned, but it is also possible to provide a channel-like member on the outer surface of the side panel or the side of the bottom plate of the storage shelf, and to stop the channel-like member on the inner wall surface of the storage section of the box. A channel-shaped member is provided on the side of the storage shelf and the inner wall of the storage shelf storage part of the box body, and these members are It is also possible to have a structure in which a guide member is loosely fitted in between, so that the guide member moves toward the front as the storage shelf is pulled out and maintains a horizontal state.

There are no particular restrictions on the other configurations of the box or storage shelf in the thermostatic apparatus of the present invention, such as the location of the electric heating element, the face walls of the box, etc. , glass wool, etc.
Furthermore, in order to equalize heat, the storage shelf is preferably constructed of a perforated plate, a rigid wire mesh, or the like.

As explained above, the present invention can prevent the sudden drop in temperature inside the device and the disturbance of temperature distribution when the door is opened and closed, and the temperature can be recovered quickly. The function itself can be improved, and it is economical as it consumes less electricity to recover from the drop in temperature inside the equipment due to the intrusion of outside air.It is also extremely safe in terms of operation since there is little blowing out of hot air when opening and closing the door. Furthermore, since the horizontal state of the storage shelf can be maintained, the work can be done easily and there is no risk of cutting the samples.

Next, examples of the present invention will be described, but the present invention is not limited to these examples and can be modified in various ways within the scope of the claims.

EXAMPLE When the variation 1 of the temperature inside the chamber at the time of loading and unloading of the sample was investigated using three types of constant temperature devices as shown below, the results shown in the graph of the fourth column 1 were obtained.

Inner tank temperature: 150℃ Number of samples: 10 Sample type: 11 A V-type cryocone rubber constant temperature device...■ Tank interior dimensions...rl] 400 ceramic x depth 400 fin x height 350 m Insulation material...Glass wool door Installation condition: Fixed on one side (door type) Door size: 240m long x 220mm Door opening angle: 45° or 60° Number of shelves in the tank: 2 stages (3 sections) Constant temperature Equipment...■ (Structured as shown in Figure 1, but no shield is attached) Dimensions inside the tank...Same storage shelf size as above...Width 360w + m x Depth 4 Q Q
m x height 90 ga Number of storage shelves: 3 The results are shown when only one of the storage shelves is pulled out.

Constant temperature device...■ (same as above ■, however, a channel-shaped member is installed on both sides of each opening, and a metal shielding plate that slides on the groove of this channel-shaped member is prepared separately) One of the storage shelves After pulling out the chisel to a predetermined position, the shielding plate was slid down the groove of the channel-shaped member to block the opening formed between the storage shelf and the box.

From the attached drawings, it can be seen that in the constant temperature apparatus of the present invention, the change in temperature within the chamber 11i1J during loading and unloading of samples is extremely small.

4. Ash) im's l? Figures 1 to 3 show an entire or partial perspective view and a schematic sectional view of the constant temperature apparatus according to the present invention, and Figure 4 is a graph showing the experimental results in the example. be.

1... warm-blooded segment, 2...Storage shelf, 3...opening part, 4... Shielding body.

Patent applicant: Shin-Etsu Chemical Co., Ltd. Figure 1 Figure 3 Figure 4 Recovery time □ (minutes)

Claims (1)

[Scope of Claims] L. In a constant temperature device in which a constant temperature box body is provided with a plurality of drawer-type storage shelves, when the storage shelves are pulled out, an opening for communication between the inside and outside that is created between the box body and the storage shelf is blocked. A constant temperature apparatus characterized in that a shield for the purpose is provided on the box and/or the storage shelf. 2. The constant temperature apparatus according to claim 1, wherein the storage shelf is configured to maintain a horizontal state when fully drawn out.