JP4064697B2 - Heat accumulation display label - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a heat integration display label, and more particularly to a heat integration display label having a function of integrating and displaying the total amount of heat received by a target object over time.
[0002]
[Prior art]
Some objects that require temperature management need to know not only the temperature change over time and temperature information at a certain moment, but also the total amount of heat (integrated value) received by the target object over time There is also. For example, in the case of oil-filled transformers, if the total amount of heat generated in the transformer (integrated amount) exceeds a certain value due to continuous operation, it is necessary to conduct a detailed inspection because the insulation performance may have deteriorated. Has been done.
[0003]
[Problems to be solved by the invention]
However, conventionally, the total amount (integrated value) of heat received over time, such as in an oil-filled transformer, could not be easily known, and could only be estimated by calculation from the operating time, changes in heat generation value, and the like. If a temperature measuring device with a recording function that can sequentially record the temperature change of the target object is attached to the target object such as an oil-filled transformer, the total amount of heat over time can be integrated, but the unit price of the device is It was expensive and the equipment cost was high, so it was impossible to adopt it in terms of cost.
[0004]
The present inventor has improved the temperature-sensitive label widely used for reversibly or irreversibly sensing and displaying the temperature of a desired part of various target objects such as mechanical devices and electrical equipment, thereby allowing the target object to undergo time-lapse. As a result of diligent research to make it possible to record the integrated value of heat quantity at a low cost, we have succeeded in developing a completely new heat quantity display label this time and propose it here as the present invention.
[0005]
[Means for Solving the Problems]
A colored wax in which a pigment is dispersed in a wax that starts melting at a preset temperature at the wide-side end of the strip-shaped wax absorber 1 having a tapered planar shape with a lateral width gradually decreasing from one end to the other in the longitudinal direction. The above problem is solved by superimposing 2 and covering the entire surfaces of the wax absorber 1 and the colored wax 2 with a transparent film 5 to form a heat amount integrated display label.
[0006]
Embodiment
FIG. 1 is a plan view of an embodiment of a heat quantity integrated display label according to the present invention, and FIG. 2 is a sectional view thereof.
[0007]
FIG. 1 shows a strip-shaped wax absorber superimposed on a sheet-like base material 3, and has a tapered planar shape with a lateral width gradually decreasing from one end to the other in the longitudinal direction as shown in FIG. It consists of Japanese paper, blotting paper, filter paper, etc., which are materials that have the property that the melted wax can easily permeate.
[0008]
And, this wider end of the wax absorber 1 is colored wax 2 in which a pigment is dispersed is superimposed in the wax starts to melt at a preset temperature, the coloring waxes 2 and wax absorption The entire surface side of the body 1 is covered with a transparent film 5, and an adhesive layer 4 is formed on the back surface of the substrate 3.
[0009]
This embodiment has the configuration as described above, and is used by sticking to a desired part of a target object to be temperature-detected such as an oil-filled transformer using the adhesive material layer 4 on the back surface of the substrate 3. It is. When the target object is set in advance and reaches the temperature, the colored wax 2 starts to melt and soaks into the wax absorber 1. Since colored wax 2 is located on the wide end of the tapered wax absorber 1 width is gradually decreased, colored wax 2 was melted over time toward the other longitudinal end of the wax absorber 1 penetration As the area increases, the colored portion 12 of the wax absorber 1 increases as shown in FIG.
[0010]
In general, as the colored wax 2 moves away from the original position (the left end in FIGS. 1 and 2), the penetration speed of the molten colored wax 2 into the wax absorber 1 decreases. Since the width of the absorbent body 1 gradually decreases in a tapered shape, the apparent permeation speed of the colored wax 2 does not decrease. In other words, penetration area of the colored wax 2, since decreases with increasing away is from its original position, expansion speed of the apparent color portion 12 that Do approximately constant in proportion to the temperature. In this way, by adjusting the taper angle of the lateral width of the wax absorber 1, the relationship between the heat amount integrated value and the color development amount can be freely changed. When the temperature of the target object falls below the set temperature, the colored wax 2 solidifies and the penetration into the wax absorber 1 is temporarily stopped, but when the temperature of the target object exceeds the set temperature again, the colored wax 2 is again As a result of melting, the permeation area of the wax absorber 1 is increased, and the coloring portion 12 is also enlarged.
[0011]
In this way, the temperature of the target object each time in excess of the set temperature, osmotic area clogging coloring part 12 of the colored word box 2 of the wax absorber 1 will continue to expand. At this time, the colored wax 2 is not simply melted, but its viscosity decreases as the temperature increases, so that the penetration speed of the colored wax 2 increases as the temperature of the target object increases.
[0012]
Therefore, the size of the colored portion 12 of the wax absorber 1 and the total amount of heat applied to the target object have a correlation, and the integrated value of the heat applied with time from the size of the colored portion 12 is calculated. I can know.
[0013]
Although this heat amount integrated display label can be used as it is, as shown in FIG. 4, a portion that develops color when a specific time (for example, 40 hours) elapses at a set temperature (for example, 70 ° C.), similarly, when 80 hours have elapsed. An opaque plate member 7 provided with an opening window 6 may be superimposed on the portion that develops color, etc., and in this case, the integrated value of the heat quantity can be immediately known only by looking at the presence or absence of coloration of the opening window 6. I can do it. Note that the case of FIG. 4 indicates that the target object has passed 40 hours at 70 ° C. or higher.
[0014]
Further, as shown in FIG. 5, a slit-shaped window 8 is provided to overlap the wax absorber 1, and an opaque plate material 10 with an indicator 9 indicating a numerical value of the accumulated heat value is superimposed along the window 8, You may make it show a calorie | heat amount integrated value in a bar graph type | formula.
[0015]
Further, as shown in FIG. 6, it may be used in combination with existing various irreversible temperature-sensitive labels 13 that irreversibly display the fact that the set temperature has been exceeded. Both values can be known, and more appropriate temperature management is possible.
[0016]
【The invention's effect】
The calorific value integrated display label according to the present invention has the configuration as described above,
The integrated value of the amount of heat applied to the target object can be easily known, and is extremely effective for temperature management of various devices. In addition, since the taper is formed in the width direction of the wax absorber, the correlation between the integrated amount of heat and the amount of color development can be freely adjusted, and the display label is easier to check according to the characteristics of the target object. It can be. In addition, the structure is extremely simple, durable, can be produced at low cost, and has high practical value.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of a heat accumulation display label according to the present invention.
FIG. 2 is a sectional view of the same.
FIG. 3 is also a plan view of the usage state.
FIG. 4 is a plan view of an application example of a heat amount integrated display label according to the present invention.
FIG. 5 is also a plan view of another application example.
FIG. 6 is a plan view of still another application example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wax absorber 2 Colored wax 3 Board | substrate 4 Adhesive material layer 5 Transparent film 6 Window 7 Opaque board material 8 Window 9 Indicator 10 Opaque board material 11 Irreversible thermosensitive label 12 Color development part 13 Irreversible thermosensitive label

Claims (2)

A pigment is dispersed in wax that starts melting at a preset temperature at the wide-side end of a strip-shaped wax absorber (1) having a tapered planar shape whose width gradually decreases from one end to the other in the longitudinal direction. A calorific value integrated display label characterized in that the colored wax (2) is superposed and the entire surfaces of the wax absorber (1) and the colored wax (2) are covered with a transparent film (5) . The calorific value integrated display label according to claim 1, wherein the wax absorber (1) is Japanese paper.

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