CN102525427A - Mercury-free non-electronic thermometer with protection structure - Google Patents

Abstract

A mercury-free non-electronic thermometer with protective structure comprising: a protective member; an end member having a thermal contact surface, the end member being fixedly connected to the protection member; a heat conducting layer including a heat sensing portion and a temperature display portion, the heat sensing portion being located in the end member, the temperature display portion being located in the protective member; the temperature scale layer is marked on the temperature display part or the surface of the protective component at a position corresponding to the temperature display part; and the temperature sensing and color changing layer is at least formed on the temperature display part, wherein the heat sensing part of the heat conduction layer senses the thermal contact surface so as to conduct heat flow to the temperature sensing and color changing layer on the temperature display part, and the temperature sensing and color changing layer generates a color changing area according to the corresponding temperature of the heat flow so as to display the corresponding temperature scale value on the temperature scale layer. The thermometer of the invention does not contain mercury, can avoid toxic pollution, the body thermometer does not need to be provided with a chemical battery, can avoid environmental pollution, and can also prevent the thermometer from using insufficient power caused by chemical battery loss when being placed for a long time.

Description

Mercury-free non-electronic thermometer with protective structure

technical field

The invention relates to the field of a thermometer; in particular, it relates to a mercury-free non-electronic thermometer.

Background technique

In the application field of health care, various materials and methods are widely used to detect temperature and its changes. For example, traditional mercury thermometers (Mercury bulb thermometers) use the simple principle that liquids expand when heated and contract when cooled. However, traditional mercury-containing thermometers are highly polluting and toxic, so many countries have banned or restricted their use.

In addition, electronic thermometers have more advantages than traditional glass thermometers. For example, the digital temperature display method can avoid errors in temperature reading; the accuracy and accuracy improved by proper circuit design degrees, can accurately measure and display the temperature to 1/10th of Fahrenheit.

However, electronic thermometers are more expensive than mercury thermometers, and electronic thermometers must be equipped with chemical batteries to provide electronic functions. The reason is that the idle time is long and the power consumption is small when used. Therefore, installing a chemical battery such as a lithium battery in the thermometer is neither environmentally friendly nor easy to cause environmental pollution.

Contents of the invention

In view of this, the object of the present invention is to provide a mercury-free non-electronic thermometer with a protective structure. The battery, in addition to avoiding environmental pollution, can also prevent the thermometer from being used for a long time due to chemical battery loss, resulting in insufficient power during use.

The invention provides a mercury-free non-electronic thermometer with a protective structure, comprising: a protective component; an end component with a thermal contact surface, the end component is fixedly connected to the protective component; a heat conducting layer, including a thermal part and a temperature display part, the heat-sensitive part is located in the end member, and the temperature display part is located in the protective member; a temperature scale layer is printed on the temperature display part or the position corresponding to the temperature display part on the surface of the protective member; and a temperature-sensitive The color-changing layer is formed at least on the temperature display part, wherein the heat-sensitive part of the heat-conducting layer senses the thermal contact surface to conduct heat flow to the thermochromic layer on the temperature display part, and the thermochromic layer produces a color change according to the corresponding temperature of the heat flow area to display the corresponding temperature scale value on the temperature scale layer.

In a preferred embodiment, the protective member includes a transparent body.

In a preferred embodiment, the protective member comprises a hollow tube.

In preferred embodiments, the protective member comprises a glass or plastic body.

In preferred embodiments, the end member includes a rounded front end.

In a preferred embodiment, the end member is a hollow metal tube.

In a preferred embodiment, the inside of the end member is filled with heat-conducting glue to fix the position of the heat-sensing portion of the heat-conducting layer.

In a preferred embodiment, the thermochromic layer has a first color.

In a preferred embodiment, the discoloration region has a second color different from the first color, and can return to the first color after cooling down.

In a preferred embodiment, the discoloration area is a transparent area, and can return to the first color after cooling down.

The characteristics and advantages of the mercury-free non-electronic thermometer with protective structure of the present invention are: since the thermometer does not contain mercury, it can avoid poison pollution, and the cost is greatly reduced compared with the electronic thermometer. In addition, the thermometer does not need to be equipped with chemical batteries. In addition to avoiding environmental pollution, it can also prevent the thermometer from being left unused for a long time to cause chemical battery loss, resulting in insufficient power during use.

Description of drawings

FIG. 1 is a schematic diagram showing the structure of a heat-conducting layer of a mercury-free non-electronic thermometer according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing the structure of a thermochromic layer of a mercury-free non-electronic thermometer according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing the structure of a mercury-free non-electronic thermometer according to an embodiment of the present invention.

FIG. 4 and FIG. 5 are structural schematic diagrams showing a mercury-free non-electronic thermometer with a color-changing area according to an embodiment of the present invention.

FIG. 6 is a schematic diagram showing the structure of the temperature scale layer of the mercury-free non-electronic thermometer according to the embodiment of the present invention.

Description of component symbols

10 ... heat conduction layer 10a ... temperature display part

10b...Heat sensing part 20...Temperature scale layer

30...The temperature-sensitive color-changing layer 30a, 30b, 30n...The temperature-sensitive color-changing block

40 ... Protective components 41 ... End components

43 ... thermal contact surface 30X ... discoloration area

30Y……No color change area 50……Thermometer

Detailed ways

Please also refer to FIGS. 1-3 , which show an embodiment of the thermometer of the present invention. First, as shown in FIG. 3 , the thermometer 50 includes a protective member 40 , such as a transparent body, which can be made of glass or plastic. Generally speaking, the protective member 40 is a hollow tube. The end member 41 has a thermal contact surface 43 fixedly connected to the protection member 40 . In one embodiment, in order to reduce heat capacity, the end member 41 is formed of a hollow metal tube. In addition, to facilitate the user to measure body temperature and avoid injury, the front end surface of the end member 41 can be in a smooth curve shape. In addition, the interior of the end member 41 may optionally be filled with at least a portion of heat-conducting glue to fix the position of the subsequently inserted heat-conducting layer 10 such as the heat-sensitive portion 10b.

Next, referring to Fig. 1 and Fig. 6, the heat conduction layer 10 includes a heat sensitive portion 10b and a temperature display portion 10a, the heat sense portion 10b is located in the end member 41, and the temperature display portion 10a is located in the protection member 40, the heat conduction layer 10 may be a layer of thermally conductive film or thermally conductive paper made of, for example, a metal material with high thermal conductivity. In one embodiment, the heat sensitive portion 10 b abuts against the front end of the end member 41 or the inner sidewall of the end member 41 . In addition, the temperature scale layer 20, for example, uses waterproof ink, and as shown in Figure 1, each temperature value can be marked on the temperature display part 10a of the heat conduction layer 10, or as shown in Figure 6, each temperature value can be marked on the protective member 40 The inner surface or the outer surface corresponds to the position of the temperature display part.

Referring to FIG. 2 and FIG. 4 , the thermochromic layer 30 is at least formed on the temperature display portion 10 a of the heat conduction layer 10 . The heat-sensitive part 10 b on the heat-conducting layer 10 senses the thermal contact surface 43 to transfer heat to the thermochromic layer 30 on the temperature display part 10 a. As shown in FIG. 4 , the thermochromic layer 30 can produce a color-changing region 30X according to the corresponding temperature of the heat flow to display the corresponding temperature scale value on the temperature scale layer 20, while the remaining part of the thermochromic layer 30 without a color-changing region 30Y is Because the temperature did not reach the critical value and did not change color, it still maintains the original color.

Wherein, in the embodiment shown in Figure 2, the lower temperature scale value (thermochromic discoloration block 30a) of the temperature scale layer on the temperature display portion 10a can be selected to be adjacent to the heat sensitive portion 10b, while the higher temperature scale value The value (the temperature-sensitive discoloration block 30n) is far away from the heat-sensitive portion 10b. For example, the thermochromic layer 30 can be divided into a plurality of thermochromic blocks 30a-30n corresponding to each temperature scale value, and each block has the lowest critical color change value of each temperature scale value, so when the heat sensitive When the part 10b conducts the heat flow to the thermochromic layer 30 on the temperature display part 10a, the corresponding temperature of the heat flow can make each block with the lowest critical color change value below this temperature change color to form a color change area, as shown in Figure 4 and Figure 5, When the measured temperature is 37 degrees Celsius, the color of each block with a critical discoloration value below 37 degrees Celsius can be changed to form a discoloration zone 30X; each block with a critical discoloration value above 37 degrees Celsius remains unchanged. Wherein, the original color of the thermochromic layer 30 can reduce the recognition of the temperature scale value, and the changed color of the color-changing area can be another color or form a transparent area to clearly display the temperature scale value.

Please refer to FIG. 2 again. In one embodiment, the thermochromic layer 30 is selected from individual thermochromic blocks with different critical temperature values, and is formed on each block by stencil printing or coating. However, in another embodiment, the thermochromic layer 30 may also be composed of a multi-layer structure, and a block with a more multi-layer structure has a higher critical color change value, that is, a higher temperature is required to change color. For example, it is possible to coat a layer of thermochromic film on the surface of the heat conduction layer 10 first, and the range can at least cover the entire temperature scale layer, and secondly, coat a second layer of thermochromic film on the surface of the heat conduction layer 10, but the range only covers Areas above the second temperature scale, and so on. Therefore, the thermochromic film of the lowest temperature scale block (thermochromic block 30 a ) is the thinnest, and the thermochromic film of the highest temperature scale block (thermochromic block 30 n ) is the thickest. In addition, the multi-layer structure of the thermochromic layer 30 can also be selected to be composed of multiple layers of thin films with different compositions or different doping ratios.

To sum up the above, since the thermometer of this embodiment does not contain mercury, it can avoid poison pollution, and at the same time, the cost is significantly lower than that of electronic thermometers. In addition, the thermometer does not need to be equipped with chemical batteries. In addition to avoiding environmental pollution, it can also prevent the thermometer from being left for a long time. There is no need to cause chemical battery loss, resulting in insufficient power during use.

Claims (10)

1. A mercury-free non-electronic thermometer with a protective structure, characterized in that it comprises: a protective component; an end member having a thermal contact surface, the end member being affixed to the protective member; A heat conduction layer, including a heat sensitive part and a temperature display part, the heat sensitive part is located in the end member, and the temperature display part is located in the protective member; A temperature scale layer, engraved on the temperature display part or at the position corresponding to the temperature display part on the surface of the protective member; and A thermochromic layer formed on at least the temperature display part, wherein the heat sensitive part of the heat conduction layer senses the thermal contact surface to conduct heat flow to the thermochromic layer on the temperature display part, the thermochromic layer A color changing area is generated according to the corresponding temperature of the heat flow to display the corresponding temperature scale value on the temperature scale layer. 2. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 1, wherein the protective member comprises a transparent body. 3. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 2, wherein the protective member comprises a hollow tube. 4. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 3, wherein the protective member comprises a glass or plastic body. 5. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 1, wherein the end member comprises a front end with a smooth curve. 6. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 1, wherein the end member is a hollow metal tube. 7 . The mercury-free non-electronic thermometer with a protective structure as claimed in claim 6 , wherein the end member is filled with heat-conducting adhesive to fix the position of the heat-sensitive portion of the heat-conducting layer. 8 . 8. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 7, wherein the thermochromic layer has a first color. 9. The mercury-free non-electronic thermometer with a protective structure as claimed in claim 8, wherein the discoloration area has a second color different from the first color, and can return to the first color after cooling down . 10 . The mercury-free non-electronic thermometer with a protective structure as claimed in claim 8 , wherein the discoloration area is a transparent area and can return to the first color after cooling down. 11 .

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