DE8813667U1 - Indicator to indicate critical temperature ranges - Google Patents

Description

•"/0.10.88. "jH/m

For the population and the economy

the monitoring of the quality of chemical and pharmaceutical products and of foodstuffs is of considerable importance.

This is especially true for temperature-sensitive

Products that only maintain consistent quality within a lower and upper temperature range for storage, transport and handling.

The state of the art has therefore already dealt with this problem. For example, minima-maxima thermometers with capillary tubes are known in which alcohol or mercury magnetizable rods

which stop at the temperature reached and thus indicate this. The rods can be returned to their starting position.

^2(J These thermometers have the disadvantage that they are large, have to be mounted vertically and are prone to breakage.

Liquid indicators are also known. These use the freezing point of water as a technical effect. It is determined by

A capsule burst at plus/minus 0 ⁰ C releases an indicator liquid. This temperature can be extended to limit temperatures below 0°C by using mixtures of ethanol and water.

These indicators are also large and prone to breakage. It is important to note that they cannot be used at temperatures above 0 ⁰ C.

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There are also chemically reacting indicators

known. These have the disadvantage that they always have to be started below the temperatures to be monitored.

-* A control of 2 temperatures within

It is not possible to measure a temperature range with these indicators because these systems can only monitor temperature movements that run upwards in one direction.

Even after a longer storage period, it is not possible to rule out changes in such substances.

The German publication 2 130 926 describes an optical control indicator for deep-frozen products. This works in such a way that several melting substances with different melting points are thermally isolated from the outside and show the melting point with a time delay on a visual display.

This device is intended to indicate the increase in temperature above the cold temperature. There are alcohol-water mixtures in capsules which indicate the limit temperature when the temperature increases in a set range between 0 ⁰ C and - 20 ⁰ C. This device is not suitable for temperatures above 0° C and its use is therefore limited.

In addition, in many cases the leakage of liquid from a burst capsule is detrimental.

&Iacgr;" 3 1'

The state of the art has recently

Time develops in a different direction. This determines time-dependent or time and temperature-dependent environmental conditions to evaluate the "durability",

i.e. the change in the quality of raw materials and products.

The German patent specification 37 17 025 describes a? hnr. elgevorrichtung for time-dependent processes. It is

by pressing an indicator mass from a depot but a channel is connected to an indicator strip. After this start, the point in time is determined at which the discoloration of the strip has reached the end of the display channel.

The German patent specification 32 10 907 describes an indicator for the display of a time-temperature load for fatty substances. In an elongated depot body there is a strip-shaped tile medium to which a thickener has been added.

It is activated by inserting the

Indicator in the depot body ensures that the fatty substances gradually penetrate into the flow medium over time and cover an increasingly greater distance over time.

The overlapping load factors should be recorded from the length of the route.

28.12.88.

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The invention relates to an indicator

for determining limit temperatures which reports the disadvantages of the indicators according to the state of the art and the

Range of limit temperatures to a

Temperature range from below and above 0 ⁰ C. The indicator according to the invention has the task of presenting a compact, shatter-proof, unlimitedly storable indicator with minimized dimensions, which is suitable for the display of individual temperatures as well as temperature ranges and which can detect the undershoot or overshoot

the critical temperatures irreversibly visible &lgr;&tgr;.

The indicator according to the invention is also referred to below as an "indicator system". This is intended to express the functional interaction of the parts and the indicator mass.

The indicator according to the invention is in claim 1 and in the dependent

claim 5 defined.

The indicator for displaying critical temperature ranges is characterized by the fact that it consists of one or more independent indicators

JO ^for determining lower and/or upper temperature limits with irreversible indication by color markings using parbindl markers or by means of upward

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movable, with signal color

colored bolt, and this has a housing (1 ) with one or more, separately located recesses (2) on whose

In the bottom surface there are inserted guard discs (3) made of thermobimetal, on whose surface, in the inactive state, is dome-shaped and curved downwards, at the deepest point

a chemical indicator mass (4) is located, on which the lower surface of a hold-down bolt (14) is located, and above this there is a locking disk (15) resting on the upper edge of the guard rake (3) with a central breakthrough opening, which holds it in place, and above this there is a horizontal, absorbent disk (16) with a central breakthrough opening, and thereby the recesses (2)

la closes the housing (1) and above this there is a guide plate (9) with a central guide opening and above this there is a transparent cover plate (12) pressed into the housing (1) ■with a recess for the start tab (11) and above this,

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if necessary, preferably a

Adhesive end label (5) with:
central end display field (6): and
eich above the guide plate (9)

a free space (13) is located, which is

Pull out the start tab (11)

let, causing the blockage L

the guard chisel (3) by means of low- k

halteboleen (14) is lifted, |

and the indicator in the active *

Condition a dome-shaped
has an upwardly curved surface,
and thereby the indicator mass (4)

through the breakthrough opening ° of the -

Storage (15) in the '

eye-filling disc (16) is pressed in,
This is colored, and this

colouring by the central end display field (6) |

of the final label (5) Irreversible

2ö secure iSf , ödif the pinRefäfbfp Display- 7

bolt (8) through the flap insert (10) $

into the free space (13) of the cover plate ^

(12) is pressed and through the central 1

F.nd indicator field (6) of the attached f end label (g) irreversible

is visible. /j

The indicator of invention is _; |

also characterised by |

that it does not contain any indicator mass
and a signal-colored
Indicator bolt (8) which is attached to its

ends perpendicular to its | axis, i

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with its lower surface directly on

the surface of the inserted thermobimetal guard disc (3) is curved downwards in the inactive state, and

through the snapped upwards in the active state &rgr; W.ichl ersehelbc (3) through the guide opening in the middle of the one directly above

Guide plate (9) muli top

is pressed, whereby the flaps located above the indicator bolt (8) in the hinged cover (IU) are opened in their lower pivot point towards their center, and the

colored indicator bolts (8) through the existing space (13) or the space created by pulling out the start tab (11) and through the end indicator field (6) of the seated rib

End label (5) is irreversibly visible.

The indicator system of the invention

is defined in its alternative and preferred embodiment and with the process Ku of its preparation, as well as with its application in the sub-addresses.
The term "monosystem" refers to one indicator and the term "double system" refers to the arrangement of two indicators next to each other.

10.10.88.

Him

The indicator system of the invention with

irreversible limit indication of a
or several set limit temperatures is shown in the figures

explained.

It is presented in
figure

Side view of the mono system with indicator mass using

pull-out start tab

and with guard disc made of thermobimetal.

Side view of the mono system as in Figure 1 with indicator mass and starter and

with the start tab pulled out.

Side view of the Honosystem as in Figure 2 with indicator mass without start tab after

exceeding or falling below the

limit temperature value.

Side view of the double system with indicator mass and starting device by means of

pull-start tab and with

two watchmaker's wheels made of thermobimetal,

Side view of the double system as in Figure 4 with indicator mass and starting device with

starting tab pulled out.

10.10.88. YH/m

figure

Side view of the double system as in Figure 5 without starting lashings after exceeding or falling below the limit temperature value.

Side view of the double system without indicator mass in mechanical configuration with ophthalmic device and indicator bolt with removable start tab

and with two guard disks made of thermobimetal.

Side view of the double system

without indicator ring in mechanical design as in Figure 7

with indicator bolt and with pulled out start tab.

Side view of the double system

without isdicator mass in mechanical design as in Figure 8

without starting area with indicator lights after exceeding or falling below the dv ^v s limit temperature value.

Side view of the double system with indicator mass without starting device and with two guard discs made of thermobimetal.

Side view of the double system with indicator mass as in figure without starting device after

or falling below the Gire..." temperature value.

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-&Igr;&Ogr;&Igr; Figure

Top view of the mono system as in Figures 1 and 2 with display panel.

13 Top view of the double system fj

as in Figures 4 and 5 |'

with display fields.

Top view of the double system as in Figures 7 and 8 with display panel.

Flat surface of the honeycomb system with display panel and opening for the start tab.

Adjust the double system with viewing area and opening

for the StarMasche.

Top view of the double system with representation of the folding insert of the mechanical system

When closed.

Top view of the double system showing the flap insert of the mechanical system in the open state.

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The numbers in the figures and in the description refer to the following parts of the indicator system of the invention:

Number Part 1 Housing 2 Recess 3 Thermobimetal guard disc 4 indicator mass 5 Graduation label 6 End display field * 7 Mounting type 8th Indicator bolt 9 Driving plate 10 Flap insert with hinged lid 11 Starting area 12 End cap 13 free space U Corset retaining bolt 15 Locking washer 16 absorbent disc

The following list shows the Function of the systems according to the figures

described.

Figure 1: Inactive state, display field

white (neutral), storage and shipping status after production.

Figure 2: Activated state after applying the system to the containers of the product and pulling the

Start tab. Product in control state.

10.10.88, YH/m

Figure 3: Active state of the system

after exceeding the defined

limit of the temperature.

The central display field is colored by contact with the indicator mass

The system has, for example, the following Dimensions as a compact size: Length maximum 20 mm

Maximum width 20 mm, maximum height 6 mm.

Figure 4; Inactive state, display field wide (neutral), storage and shipping state after production of the compact system.

Figure 5: Activated state after the

Apply the system to the container, the product:«« and pull the start tab, product in the control state.

Figure 6: Active state of the separately reacting systems after

(Exceeding or falling below the defined temperature values. The separate display fields are (Itich contact with the indicator

Figure 7: Inactive state, irreversible display field white (neutral) In the closed state and held down by the locking tab above. Storage and shipping time after production.

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Figure 8: Activated state after

Apply the system to the product containers and pull the start tab, product in the control state.

§ 5 Figure 9: Activated state of the

separately reacting systems after the defined temperature limits have been exceeded or not reached. The white (neutral) display fields* are open at the top in a scalitz shape.

The double system, for example, has the following dimensions as compact sizes:

Length maximum 40 mm Width maximum 20 mm

Maximum height 6 mm.

Figure 10: Inactive state, irreversible display field white (neutral). Storage and shipping state after 2C processing.

Figure 11: Activated state of the systems reacting separately after exceeding or falling below the defined, predefined temperature limits. The separate display fields

are irreversibly discolored by contact with the indicator material. The system has, for example, the following dimensions as compact dimensions: maximum width 40 mm, maximum height 3 mm.

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The figures 10 and 11 show ■■

presented formations of the indicator
systems of the invention; must be within
the preset» limit

Storage temperatures and k

be kept during shipping, as f

these without a starting device.

is designed. ';

Pigur 12 to 16: top view and | Slope of indicator system 1

with the irreversible display fields. T

Figure 17: Inactive state. The

closed pre-punched flaps

the flap insert has the func- $

tion of the display elements with flueseren

Pivot points. These are displayed as display fields (neutral) in the shipping

condition after production. This /

The state of being is also the state of control. I Figure 18: Activated state of the L

separately reacting systems

after exceeding or falling below the ,

the defined limits of the |

Temperature. | The separate display fields ;'

are slit-shaped and open at the top.
The colored indicator bolts show

through the openings the irreversible |

Advertisement. 4

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&Idigr; Below, for individual parts

of the indicator system of the invention, their function is particularly explained. Indicator bolts (8): These are used for different colors of the

visible, irreversible indication of exceeding or falling below the specified limit temperature. The color tone is determined by the upwardly pressed and up to that point

closed flaps of the flap insert (10) are visible.

This arrangement of the parts of the indicator system of the invention corresponds to the subordinate mechanical design.

Flap insert (10): This consists of a stiff paper mass, for example up to a maximum of 0.3 mm thick, which is white (neutral). The pre-cut display ribs of the flap insert (10) are not punched through at the outer pivot points, but are firmly connected to the flap insert (10).

The activated state upwards

printed colored Ar-saigebolts (8)

pushes the pre-cut, closed flaps upwards and opens them in a slit-like manner.

&bull; t · t <

10.10.88.

-Starting device: This consists of the functional interaction of the following parts: System with indicator mass: Start tab (11), free space (13) (recess in the cover (12), hold-down bolt (14). The system is initially blocked. The system is only activated by pulling out the start tab (11), at the time when the indicator is set to the control state as a display of critical temperature ranges on the product.

System without indicator mass: start tab (11), free space (13) (recess in the cover (12), colored indicator bolt (8),

Flap insert (10).

The system is initially blocked because the guard disc with thermobimetal (3) has no room to move. Only by pulling out the start tab (11) is the

System is activated in the same way as the system with indicator mass.

The term "starting device" therefore groups together individual parts based on their functional sequence.

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The starting device with its parts

allows the time of setting the active state, in which the products are switched on

S maintaining the limit temperatures to

_; are to be controlled.

&agr; It is therefore a premature change

§ snapping of the thermobimetal

' the guard disc (3) is not

possible.The starter device gives

the system of the invention the necessary security in its

H Handling after production. Indicator housingMuse (l)sMeses is

preferably self-adhesive

with adhesive and removable silicone protective paper.After applying the system of the invention to the packaging of the product, the

Silicone protective paper removed and

the housing (1) is pressed against the product.

Alternatively, it is possible to attach the device using barbs, which are more

are part of the housing (1).

The resistance hooks are pressed through the wrapping material of the packaging and these prevent detachment from the packaging.

&bull;..itt.io.afe.. ··· ■' ··

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Indicator bolt (8): This is a functional

functional part in the mechanically operating system. This is made, for example, of break- and pressure-resistant plastic

in cylindrical shape with a |

Diameter of 4 mm and a length of i£

of 3 mm with a straight surface to its central axis. The indicator bolt is colored blue, red, yellow, for example.

This serves to irreversibly indicate when the set critical temperature has been exceeded due to high pressures of the flaps of the flap insert (10).

This has in the mechanically working

System also functions as a hold-down bolt (14) and thus has a dual function.

Holding bolt (14): In the system with indicator dimensions, this has only the

a function of holding down

the Warhterechelbe with thermobimetal

(3) to ensure that it is turned into the upwardly bent position before pulling the starting surface (11)

to prevent.

This one has, for example, a Diameter of 2 mm of the cylindrical shape and a length of 3 mm with

rounded corners or with a one-sided sharpening and consists of.

from colorless fracture" and pressure

safe plastic.

* · · &igr;&eeacgr; ill Rb * · · · *

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The scope of application of the indicator system

The invention is based on the possibility of combining the monosystem in one or more stages, e.g. 1, 5°, 8°, 15°, 30° G as a monosystem»,

or in combination with two limit temperatures, e.g. + 1°C to 15°C, or +/- 0°C to 25°C, or from

- 10 ⁰ C to + 10° G, or the double system for temperature ranges e.g.

- 20 ⁰ C to + 30°C, whereby the limit of the set temperature

is open to higher degrees in the practical area.

The temperature is displayed in

dry state without external change of the compact and minimized indicator eye system through transition of the neutral white color (colorlessness) into any colorful color of the

Indicator mass or indicator bolt e.g. from white to red or blue, which is visible through the viewing openings of the different layers and through the upper label.

Adjusted thermobimetals and installed guard disks are available in the technology.

JH/m -&Sgr;&Ogr;-&Igr; The hold-down bolt is the inserted, cylindrical bolt made of metal **' or plastic, which, in the inactive state, fixes the guard disc with the curvature facing downwards.

The inactive state is understood to be the state that exists during the manufacture and storage of the indicator system without a puncture setting.

The active state is understood to be the state that occurs after the insertion of the indicator system on the casing or

packaging, if necessary by pulling out the start tab. In this active state, the indicator

system of the invention to the set lower and/or upper limit temperatures.

The technical effect of the indicator system of the invention is based on the switching ^{of the} thermobimetal indicator disc from the lower to the upper curvature when the critical temperature limit is reached in the active state and the indication takes place in combination with the effect of the indicator mass or the colored indicator bolts.

This technical effect is irreversible and cannot be influenced or changed from the outside.

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In addition to this physical effect,

constructive technical effects are also essential for the indicator system of the invention. This consists in the fact that the height of the lower space is determined by the bending of the thermobimetal. This also consists in the fact that due to the minimization of the height of the compact indicator system of the invention, the heights of the layers arranged above the function

« is adapted to each individual layer.

t The

jjj technical effect of adjusting the height

of the guide plate. This is defined so high that in the inactive state

the hold-down bolt is flush with the top of the guide plate and in the active state of the existing clearance or the clearance formed by pulling out the start tab, the height is exactly

fills out.

The height of the Niederi«sItebolzem

* and/or the indicator bolt results in

aue the height of the Wachterecheibe, which is

j 25 let the 31safety disc be fixed.

Only if these constructive parameters

present, the critical condition is the color of the ocular disc, ; or the upper surface of the colored

Indicator bolts through the viewing openings

eicher sigbar.

&bull;&igr; ··

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The indicator system of the invention offers

the possibility to display the temperature within a required temperature range
the critical limit temperature at

decreasing and irreversible with increasing temperature.
Bs can be the limit temperature
for a fat solution between O ⁰ C and
25°C. For this example, |

the display of the limit temperature on
+ 1°C and set to + 24°C.

The influence of external temperature
on the thermobimetal of the Wachterecheibe
can therefore be within the permissible

temperature range, or the |

lower or upper set limit temperature exceeded and then
to be displayed by the color tint
It is useful for minus .;:

degrees the blue and for heat degrees the *

to use red tint.

Da8 indicator system of the invention

works with the technical effect '

a "temperature scale" within the &

permissible fluctuation range of the bearing &psgr;

and handling temperature. f

For the square mono system with Start tabs are for example

the following dimensions are used: ^

Side length 20 mm, ± Height (thickness) 6 mm, Diameter of the Display field 4 mm, |

which is ring-shaped around the lower |

retaining bolt is filled in color. |

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The mono system without starting tab

For example, uses the following dimensions:

Side length 20 mm, height (thickness) 3 mm, diameter of

Display field 4 mm, which is fully tinted with color.

For the rectangular double system with starting tab, for example,

The following dimensions are used:

Long sides 40 mm, Cross sides 20 mm,

Height (thickness) 6 mm, diameter of

Display field 4 mm, which is filled with color in a ring shape.

For the double system without starting tab, for example, the following dimensions are required:

used:

Long sides 40 mm, Cross pages 20 mm, Height (thickness) 3 mm, Diameter of the Display field 4 camouflage,

which is fully filled in color.

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For the quadratic monosystem with

Starting tab and in the mechanical system, for example, the following dimensions are used:

Side length 20 mm, Height (thickness) 6 mm,

Diameter of the
Display field 4 mm, which appears to be filled in a string-like manner by the opened flaps

of the hinged lid.

For the rectangular double system with starting tab and in the mechanical system, for example, the following dimensions are used:

Long sides 40 mm, Cross sides 20 mm,

Height (thickness) 6 mm, diameter of

Display field 4 mm,

This is also knitted

is displayed in color.

The examples demonstrate the compact indicator system of the invention.

The chemical indicator mass is produced, for example, by melting the paraffin, mixing in the triglycerides, dissolving the dye and stirring the synthetic silica into the liquid

Phase and cooling of the mass.

-£*—■ ■ ■

·

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The indicator system of the invention forms

a compact, minimized, shatter-proof, easily storable unit, which is made possible by the combination of the individual layers

' in the puncture system against a shift

its parts are adequately secured during handling.

The indicator system of the invention offers : the advantage that this in mono system

& »0 for certain, üiit ei sCfrxeuliC he TeJüprlö-

doors can be kept in stock

for rapid use when needed. The indicator system of the invention offers the advantage that it can be used for certain

. ¹⁵ products in a double system for specific

.| Temperature ranges set and for

This product can be prefabricated for rapid use. The indicator system of the invention can therefore be manufactured in a temperature-specific and product-specific manner. The indicator system also offers a technical advantage in that it contains parts that only come into operation when broken. This is a

additional safety during handling. The indicator system of the invention ensures the quality control of substances and ; products in packaging units

;; ³⁰ against exceeding critical

Temperature ranges due to their irreversible

&psgr;: Advertisement.

Claims (3)

28.12.88. JH/m -jL nsprQche 1. Indicator to indicate critical Temperature ranges, characterized in that it consists of one or more independent indicators for determining lower and/or upper temperature limit values with irreversible indication by means of colour markings using colour indicators or by means of bolts that can be moved upwards and are coloured in a signal colour, and this a housing (1) with one or more separate recesses (2) located next to one another, on the bottom surface of which guard disks are inserted (3) -.us Thermobimetal are located on ae-asses in the inactive state dome-shaped surface curved downwards at the deepest point there is a chemical indicator mass (4) or on this calibrate the lower surface of a coloured indicator bolt (8) and above it a locking disc (15) resting on the upper edge of the guard disc (3) with a central breakthrough opening, which holds it in place, and above it there is a horizontal, absorbent disc (16) with a central breakthrough opening, and dflthrough the recesses (2) YH/m - 2 - in the housing (1). This closes and exerts there is a guide plate (9) with a central guide opening and above it a transparent abseiling plug (12 ) pressed into the housing (1) with a recess for the start tab (U) and α I above it, if necessary a preferably self-adhesive end label (5) with a small end display field (6) and there is a free space (13) above the guide plate (9) which has been created by pulling out the start tab (11), which enables the guard disc (3) to be blocked by means of a low retaining bolt &igr; (14) is lifted, and the start tab (11), the free space (13) as a recess in the cover (12), the hold-down bolt (U) form the start-■ device for initiating the display, and the indicator in the active state has a dome-shaped surface curved upwards, and thereby the indicator mass (4) through the breakthrough opening into the absorbent* disc (16) is pressed in, it is thereby colored, and this coloring entails Display field (6) of the closing label (3) is clearly visible , or the colored call sign (C) is irreversibly removed through the folding insert (10) into the free space (13) up to the bottom of the closing cover (2) and through the opening field (6) of the closing label (5). ' *28.'l2.88. YH/m 2. Indicator according to claim 1, characterized in that the safety disk (15) is made of plastic and the eye-capable disk (16) is made of white or filter paper and the guide plate (9) is made of transparent (12) made of transparent plastic and the soft flap (11) made of rigid Plastic and the final label (5) made of paper or plastic.
3. Indicator according to claim 1, characterized in that dl« chemical indicator mass (4) is the Has the property of a non-Newtonian liquid whose solid-liquid phase is established by gel formation. *· Indicator amending the Claim 1, characterized in that it does not contain any indicator dimensions and a signal-colored indicator bolt (8) which has vertical surfaces to its axis, YH/m with: its lower surface directly on the card-shaped surface of the inserted guard disk (3) made of thermobimetal, which is curved downwards in the inactive state, and by the active state after OwSm SU t. JSSC iiiiappuS näCiiLcröCiiciuS (3) through the guide opening in the middle of the directly above Guide plate (9) upwards is printed, whereby the flap insert (10) with the flap cover located above the indicator bolt (B) is opened at its outer pivot point towards its center, and the colored indicator bolt (61) is irreversibly visible through the existing or by pulling out the start tab (11) free space (13) and through the display field (6) of the seated end label &bgr; (5)» and the start tab (11) the free space (13) al recess in the end cover (12), the indicator bolt (8), the flap insert (IC) the start facility. 5. Indicator according to the claims, 1 to 4, characterized in that the housing (1) is made of impact- and break-proof 3Q solid plastic or other, rigid material and which has a box shape with a square or rectangular base with display fields arranged centrally on the surface. JH/&iacgr;&igr; 6. Indicator according to the claims 1 to 5 , characterized in that the base housing (1) has the following dimensions: Length up to 40 mm, Width up to 20 mm, height hl« 6 mm. Display field 3 to 6 mm. 7. Indicator according to the claims 1 to 6 . characterized in that the housing (D) is self-adhesive on its underside, or has plastic tips with ^barbs on it for attaching on packaging, &bgr;. Indicator according to the claims to 7· characterized in that the guard disc ( 3 ) is provided with a colored Foil is provided instead of the indicator mass and there is a roughened foil under the transparent cover (12) which only allows the colour of the coloured foil to shine through when active.