CN2884171Y

CN2884171Y - Over-temp. alarming and displaying device

Info

Publication number: CN2884171Y
Application number: CN200620056147.3U
Authority: CN
Inventors: 陈东兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-08
Filing date: 2006-03-08
Publication date: 2007-03-28
Anticipated expiration: 2016-03-08

Abstract

The utility model relates to an overtemperature alarm display unit, which aims to solve the problems of high cost in the prior art, comprising a first sealed transparent container with fixed volume and a second sealed transparent container with variable volume, and both are communicated via a fine pipe filled with a section of liquid; alarm display material is in the first container and the second container to receive liquid flowing out of the fine pipe and to generate color change effect; expansion with heat and contraction with cold of air in the first and the second container is caused by changes of ambient temperature, and liquid is driven to move in the fine pipe, to flow to the alarm display material of the first container at a lower limit temperature value, and/or to flow to the alarm display material of the second container at an upper limit temperature value, so as to realize alarm display function, wherein, the second container can be designed to a structure of fixed volume and is communicated with environment. The utility model has the advantages that the device can display normal temperature and the upper limit temperature value and the lower limit temperature value alarm display functions, and the device has simple structure and low cost.

Description

Over-temperature alarm display device

Technical field

The utility model relates to the temperature detection warning device, more particularly, but relates to a kind of display environment temperature, and can produce the over-temperature alarm display device of alarm indication effect when temperature reaches predetermined lower limit value and/or higher limit.

Background technology

In a lot of fields that produce and live, all need temperature is monitored, for example in storage and transportation, all need to monitor the temperature of its place environment, with the requirement up to specification of the temperature of guaranteeing its place environment to food, pharmaceuticals, chemicals, quick warm nature commodity.In the prior art, there is the various temperature instrument can show, write down environment temperature, and when environment temperature reaches lower limit or ceiling temperature value, sound, light or other alerting signals, perhaps export corresponding thermograph in the print plot mode, but this series products all needs power drives and complex structure, volume bigger usually, the most important thing is that its cost is higher.

At present, there is a kind of overtemperature alarm of power drives that do not need to show product---thermochromic paster on the market.This product does not need external power supply, can directly stick on the testee surface, and changes self color according to the variation of environment temperature, allows the observer come the judgment object surface temperature whether to surpass the ceiling temperature value according to its change in color.The shortcoming of this product is that the indication precision is not high, have usually ± 2 ℃ error, and its institute can temperature indicative scope usually between 50 ℃-120 ℃; In addition, its temperature indicative is generally 5 ℃ at interval, is difficult to specify arbitrarily the variable color indicated temperature; And the cost of this product is higher relatively, is difficult to large-scale popularization and uses.

The utility model content

At the above-mentioned defective of prior art, the utility model will solve problems such as existing temperature alarming display device cost is too high, precision is not high, makes the over-temperature alarm display device that a kind of cost is low, precision is high.

The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of over-temperature alarm display device, fix and second container of first container of sealed transparent and variable volume and sealed transparent comprising a volume, be communicated with by a fine duct between described first, second container; One section liquid is housed in described fine duct; In described first, second container, be respectively equipped with liquid that receivability flows out and the alarm indication material that produces color changeable effect from described fine duct; Wherein, the variation of environment temperature can cause expanding with heat and contract with cold of the interior air of described first, second container, and then promote described liquid and in described fine duct, move, and when environment temperature reaches lower-limit temperature value, flow out on the alarm indication material of first container and/or when reaching the ceiling temperature value, flow on the alarm indication material of second container.

Wherein, for realizing the variable volume of described second container, can be with the one side at least of second container with can expanding with heat and contract with cold and freely bloat or recessed soft diaphragm is made with air in second container.

In another preferred version of the present utility model, described second container can be second container that a volume is fixed and communicated with the external world, and other conditions then remain unchanged.Concrete scheme can be the aperture that one side is provided with and the external world communicates at least at this second container.

At the over-temperature alarm display device in the such scheme, in described fine duct, preferably be provided with the switch of its break-make of may command.Described fine duct is preferably transparent tube, and described liquid is preferably colored liquid; The scale value that can indicate current environmental temperature according to the position of described liquid also can be set on described transparent tube.In addition, described alarm indication material can be fluorescent powder.

By such scheme as can be known, in the over-temperature alarm display device of the present utility model, the liquid in the fine duct can move according to the variation of environment temperature, and the scale value on the cooperation fine duct and demonstrate current environment temperature; When environment temperature reached lower limit and/or higher limit, the liquid in the fine duct can flow in first or second container, makes alarm indication material production variable color wherein, thereby reaches the effect of alarm indication.Over-temperature alarm display device of the present utility model does not need external power supply, and have simple in structure, cost is low, warning precision advantages of higher.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the structural representation of the over-temperature alarm display device in preferred embodiment of the utility model;

Fig. 2 is the structural representation of the over-temperature alarm display device in another preferred embodiment of the utility model.

Embodiment

A preferred embodiment of the present utility model as shown in Figure 1, comprising first container (lower-limit temperature value warning container), 1, second container (ceiling temperature value warning container) 2, fine duct 3, be loaded on the colored liquid 4 in the fine duct and be loaded on switch 5 in the fine duct 3.

As can be seen from the figure, each face of container 1 is transparent hard material and makes, and forms a sealing, the fixing space of volume.Container 2 right flanks are that soft diaphragm 6 is made, and all the other each faces are transparent hard material and make, because soft diaphragm 6 can be with the expanding with heat and contract with cold and freely bloat or recessed of air in the container 2, so formed the space of a sealing, variable volume.When variation of ambient temperature, the air in container 1 and the container 2 all produces and expands with heat and contract with cold, but because the volume of container 2 can be by soft diaphragm 6 free adjustment, so can not produce thrust or suction in container 2 these sides; On the contrary because the volume of container 1 immobilizes, so expanding with heat and contract with cold of its inner air can produce corresponding thrust or suction, so can promote colored liquid 4 in fine duct 3 left or move right.

During concrete the making, inject one section colored liquid 4 at fine duct 3 right-hand members earlier, equal in environment temperature under the condition of ceiling temperature value, with fine duct container 1 and container 2 are communicated with, and make and then container 1 and container 2 are sealed up positive good position fine duct 3 right output port in right side of colored liquid 4, air of both inside and extraneous air are isolated, switch 5 turn-offs then, in order to using.

According to ceiling temperature value and the lower-limit temperature value set, can determine the length of fine duct 3.Since air expand with heat and contract with cold and environment temperature is directly proportional, so the move distance of colored liquid 4 in fine duct 3 can with the proportional variation of environment temperature, it is 1 ℃ of the every rising of temperature, the colored liquid segment distance that can move right, for example can be designed to mobile 5mm, 1 ℃ of the every reduction of temperature, colored liquid then is moved to the left 5mm.Use, the difference of lower-limit temperature value multiply by the displacement of unit temperature, adds 4 length in fine duct 3 of colored liquid, is fine duct 3 due total lengths.For example, the ceiling temperature value of supposing to want alarm indication is that 10 ℃, lower-limit temperature value are 0 ℃, and colored liquid 4 is 20mm in the length of fine duct 3, and then the length overall of fine duct 3 should be: 10 * 5+20=70mm.In view of the above, corresponding scale can be set on fine duct 3, on the leftmost side this section fine duct of the leftmost side of the fine duct 3 of state shown in Figure 1 and colored liquid 4 10 scales are set, are spaced apart 5mm, read temperature value with the position at place, colored liquid left side this moment; Certainly, also can begin to be provided with 10 scales of 5mm at interval from fine duct 3 rightmost sides left, then should read temperature value with the position at place, colored liquid right side this moment.

During use, switch 5 is placed open mode, in the present embodiment, when environment temperature was 5 ℃, colored liquid was positioned at the center of fine duct 3; When environment temperature raises, the air expansion of container 1 inside, the colored liquid 4 that promotes in the fine duct 3 moves right, when environment temperature reaches 10 ℃, colored liquid is positioned at position shown in Figure 1, and when temperature continued to raise, colored liquid 4 can flow out from fine duct and drip on the fluorescent powder of container 2, make fluorescent powder dyeing, thereby know that the display environment temperature has been higher than the ceiling temperature value.

In like manner, when environment temperature constantly reduced, container 1 inner air shrank, and attracted the colored liquid 4 in the fine duct 3 to be moved to the left; When environment temperature reached 0 ℃, colored liquid moved on to the left port of fine duct 3, and when environment temperature continued to descend, colored liquid 4 can drip on the fluorescent powder of container 1, made fluorescent powder dyeing, thereby knew that the display environment temperature has been lower than lower-limit temperature value.

When not using this over-temperature alarm display device, switch 5 can be placed off state, this device can transport in normal temperature, store this moment.When needs use, this device should be put in the environment of temperature between the bound temperature value, place a period of time, treat that container 1 and container 2 temperature inside equal after the environment temperature, just switch 5 is opened.

During concrete enforcement, also can do some on the basis of the above and simplify, cancellation switch 5 wherein for example at this moment, should guarantee that its place environment temperature all is between the bound temperature value always in the storage of this product before formal use the, transportation, the installation process.In addition, colored liquid wherein can replace with other chemical solutions, and replaces above-mentioned fluorescent powder with the material that can produce change color with this solution generation chemical reaction.

Another preferred embodiment of the present utility model as shown in Figure 2, as can be seen from the figure, the difference of it and Fig. 1 is, each face of container 2 is made by rigid transparent material, soft diaphragm 6 is not set, in order, on the sidewall of container 2, to be provided with an aperture 7 that communicates with the external world just guarantee to have only the air in the container 1 to expand with heat and contract with cold and can the position of colored liquid be exerted an influence, make in the container 2 air with can communicate in the external world, thereby can when expanding with heat and contract with cold, not exert an influence the position to colored liquid.Other aspects and the last embodiment of this embodiment are identical, and principle of work is also identical, gives unnecessary details no longer one by one herein.

Claims

1, a kind of over-temperature alarm display device is characterized in that,

Comprise that a volume is fixed and second container of first container of sealed transparent and variable volume and sealed transparent, be communicated with by a fine duct between described first, second container;

One section liquid is housed in described fine duct;

In described first, second container, be respectively equipped with liquid that receivability flows out and the alarm indication material that produces color changeable effect from described fine duct;

Wherein, the variation of environment temperature can cause expanding with heat and contract with cold of the interior air of described first, second container, and then promote described liquid and in described fine duct, move, and when environment temperature reaches lower-limit temperature value, flow out on the alarm indication material of first container and/or when reaching the ceiling temperature value, flow on the alarm indication material of second container.

2, over-temperature alarm display device according to claim 1 is characterized in that, the one side at least of described second container is soft diaphragm, can expanding with heat and contract with cold and freely bloat or recessed with air in described second container.

3, a kind of over-temperature alarm display device is characterized in that,

Comprise that a volume is fixed and first container of sealed transparent and second container that volume is fixed and communicated with the external world, be communicated with by a fine duct between described first, second container;

One section liquid is housed in described fine duct;

In described first, second container, be respectively equipped with liquid that receivability flows out and the alarm indication material that produces color changeable effect from fine duct;

4, over-temperature alarm display device according to claim 3 is characterized in that, the one side at least of described second container is provided with and the extraneous aperture that communicates.

5, according to each described over-temperature alarm display device among the claim 1-4, it is characterized in that, in described fine duct, be provided with the switch of its break-make of may command.

According to each described over-temperature alarm display device among the claim 1-4, it is characterized in that 6, described fine duct is a transparent tube, described liquid is colored liquid.

7, over-temperature alarm display device according to claim 6 is characterized in that, also is provided with the scale value that can indicate current environmental temperature according to the position of described liquid on described transparent tube.

8, over-temperature alarm display device according to claim 6 is characterized in that, described alarm indication material is a fluorescent powder.