CN217716699U

CN217716699U - Non-contact temperature sensor

Info

Publication number: CN217716699U
Application number: CN202221385779.XU
Authority: CN
Inventors: 李文庚; 张增员; 李友强; 李友兵; 陈何兰
Original assignee: Mingxing Sensor Technology Huizhou Co ltd
Current assignee: Mingxing Sensor Technology Huizhou Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-01
Anticipated expiration: 2032-06-02

Abstract

The application relates to a non-contact temperature sensor, comprising: the heat conduction sleeve comprises a detection sleeve body and a sealing ring, the detection sleeve body is connected with the sealing ring, the detection sleeve body and the sealing ring jointly enclose an inner cavity, and the sealing ring is provided with an internal thread at the position of the inner wall; temperature sensor, temperature sensor includes the bayonet joint, thermistor and two grafting ends, the bayonet joint is equipped with the external screw thread in outer wall position department, bayonet joint and sealing ring looks spiro union, the terminal surface that the sealing ring was kept away from to the bayonet joint is equipped with the lag, two grafting ends are all located in the bayonet joint, the one end of two grafting ends all is located the lag, thermistor is located the inner chamber, thermistor's one end welds and is served in one of them grafting, thermistor's the other end welds and serves in another grafting. The technical scheme of this application is owing to can change the thermistor that has damaged alone for the maintenance cost greatly reduced in later stage.

Description

Non-contact temperature sensor

Technical Field

The application relates to the technical field of temperature sensors, in particular to a non-contact temperature sensor.

Background

A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The application field of the temperature sensor is very wide, the temperature sensor is additionally arranged inside almost all electronic devices, and the internal safe operation is guaranteed by measuring the internal temperature of the electronic devices through the temperature sensor. Temperature sensors can be classified into two types, contact type and non-contact type, according to the measurement mode.

For a non-contact temperature sensor, a core structural member of the non-contact temperature sensor is a thermistor packaged inside, and most of the non-contact temperature sensors which cannot work normally are damaged by the thermistor. Because the thermistor that has damaged can't be changed alone in the later stage, can increase the maintenance cost in later stage to a certain extent.

SUMMERY OF THE UTILITY MODEL

In order to solve or partially solve the problem that exists among the correlation technique, the application provides a non-contact sensor, can change the thermistor that has damaged alone, reduces the maintenance cost in later stage.

A first aspect of the present application provides a non-contact temperature sensor comprising:

the heat conduction sleeve comprises a detection sleeve body and a sealing ring, the detection sleeve body is connected with the sealing ring, the detection sleeve body and the sealing ring jointly enclose an inner cavity, and the sealing ring is provided with an internal thread at the position of the inner wall;

temperature sensor, temperature sensor includes bayonet joint, thermistor and two grafting ends, the bayonet joint is equipped with the external screw thread in outer wall position department, the bayonet joint with sealing ring looks spiro union, the bayonet joint is kept away from the terminal surface of sealing ring is equipped with the lag, two the grafting end is all located in the bayonet joint, two the one end of grafting end all is located in the lag, thermistor is located in the inner chamber, thermistor's one end weld in one of them the grafting is served, thermistor's the other end weld in another the grafting is served.

Preferably, the sealing device further comprises a sealing ring, and the sealing ring is packaged at the position where the sealing ring is screwed with the plug.

Preferably, the sealing ring is a rubber sealing ring.

Preferably, the protection sleeve is provided with a fool-proof protrusion.

Preferably, the protective sleeve is provided with buckle grooves at two side positions, and the two buckle grooves are distributed in a mirror image mode with the center of the protective sleeve.

Preferably, the outer wall of the detection sleeve body is provided with a heat conducting copper layer.

Preferably, the plug end comprises a connecting column, a plug pin and a welding part, the connecting column is arranged in the plug head, the plug pin is located in the protective sleeve and connected with one end of the connecting column, the welding part is located in the inner cavity, the welding part is connected with the other end of the connecting column, and one end of the thermistor or the other end of the thermistor is welded on the welding part.

Preferably, the welding part is provided with a positioning hole.

Preferably, the detection sleeve body and the sealing ring are of an integrally formed structure.

The technical scheme provided by the application can comprise the following beneficial effects:

the technical scheme of this application includes: the heat conduction sleeve comprises a detection sleeve body and a sealing ring, the detection sleeve body is connected with the sealing ring, the detection sleeve body and the sealing ring jointly enclose an inner cavity, and the inner wall of the sealing ring is provided with an internal thread; temperature sensor, temperature sensor includes the bayonet joint, thermistor and two grafting ends, the bayonet joint is equipped with the external screw thread in outer wall position department, bayonet joint and sealing ring looks spiro union, the terminal surface that the sealing ring was kept away from to the bayonet joint is equipped with the lag, in the bayonet joint was all located to two grafting ends, the one end of two grafting ends all is located the protective sheath, thermistor is located the cavity, thermistor's one end welds and serves in one of them grafting, thermistor's the other end welds and serves in another grafting.

When the thermistor is damaged, the plug-in connector is rotated to separate the heat conduction sleeve from the plug-in connector, the thermistor is welded on the plug-in connector, the damaged thermistor is disassembled and replaced by a new thermistor by the electric welding head, and finally the plug-in connector is screwed into the heat conduction sleeve again to finish the repair of the temperature sensor. Because the damaged thermistor can be independently replaced, the later maintenance cost is greatly reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is an assembly structural view showing a contact temperature sensor in an embodiment of the present application;

FIG. 2 is an assembled block diagram of a contact temperature sensor from another perspective in an embodiment of the present application;

FIG. 3 shows a cut-away view of a non-contact temperature sensor in an embodiment of the present application;

FIG. 4 illustrates a partial cutaway view of a non-contact temperature sensor in an embodiment of the present application;

fig. 5 is an enlarged schematic view at a of fig. 3.

Reference numerals: a non-contact temperature sensor 10; a heat conductive jacket 100; a temperature sensor 200; a probe cover 110; a seal ring 120; an inner cavity 130; internal threads 121; a plug 210; a thermistor 220; a plug end 230; external threads 211; a protective jacket 212; a seal ring 300; the fool-proof protrusion 212a; a snap groove 211b; a thermally conductive copper layer 111; a connecting post 231; a plug-in pin 232; a weld 233; the positioning hole 233a.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In the correlation technique, the thermistor is damaged mostly when the non-contact temperature sensor cannot work normally, and the damaged thermistor cannot be replaced independently in the later stage, so that the later-stage maintenance cost is increased to a certain extent. Therefore, in view of the above technical problems, embodiments of the present application provide a non-contact temperature sensor, which can replace a damaged thermistor separately, thereby reducing the maintenance cost in the later period.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is an assembly structural view showing a contact temperature sensor in an embodiment of the present application; FIG. 2 is an assembled block diagram of a contact temperature sensor from another perspective in an embodiment of the present application; FIG. 3 shows a cut-away view of a non-contact temperature sensor in an embodiment of the present application; FIG. 4 illustrates a partial cutaway view of a non-contact temperature sensor in an embodiment of the present application; fig. 5 is an enlarged schematic view at a of fig. 3.

Referring to fig. 1, a non-contact temperature sensor 10 includes: a heat conducting sleeve 100 and a temperature sensor 200. It should be noted that the heat conducting sleeve 100 has a heat transferring function, and transfers heat into the temperature sensor 200 to cause a resistance value of the thermistor in the temperature sensor 200 to change, and the external measuring device reads the current resistance value of the thermistor and converts the current resistance value into a value for detecting the temperature.

Referring to fig. 3, the heat conducting sleeve 100 includes a detecting sleeve body 110 and a sealing ring 120, the detecting sleeve body 110 is connected to the sealing ring 120, the detecting sleeve body 110 and the sealing ring 120 jointly enclose an inner cavity 130, and the sealing ring 120 is provided with an inner thread 121 at an inner wall position. It should be noted that the probe sleeve body 110 functions as a heat transfer, and the sealing ring 120 functions as a seal and an isolation.

Referring to fig. 2, 3 and 4, the temperature sensor 200 includes a plug 210, a thermistor 220 and two plug ends 230, the plug 210 is provided with an external thread 211 at an outer wall, the plug 210 is screwed with the sealing ring 120, an end surface of the plug 210 away from the sealing ring 120 is provided with a protective sleeve 212, the two plug ends 230 are both arranged in the plug 210, one end of each of the two plug ends 230 is located in the protective sleeve 212, the thermistor 220 is located in the inner cavity 130, one end of the thermistor 220 is welded to one of the plug ends 230, and the other end of the thermistor 220 is welded to the other plug end 230.

It should be noted that, when temperature detection is required, the plug connector 210 is inserted into an insertion opening of an external measuring device in an aligned manner, and is electrically connected to the external measuring device through the two insertion ends 230, the heat conducting sleeve 100 transfers heat into the temperature sensor 200 to cause a resistance value of the thermistor 220 in the temperature sensor 200 to change, and the external measuring device completes temperature detection by reading a current resistance value of the thermistor 220 and converting the current resistance value into a temperature.

It should be noted that, when the thermistor is damaged, the non-contact temperature sensor 10 is pulled out from the external measuring device, the plug 210 is rotated to separate the heat conductive sleeve 100 from the plug 210, the thermistor 220 is welded to the plug end 230, the damaged thermistor 220 is removed and replaced with a new thermistor 220 by using the electric welding head, and finally the plug 210 is screwed into the heat conductive sleeve 100 again to complete the repair of the temperature sensor. Because the damaged thermistor 220 can be replaced independently, the later maintenance cost is greatly reduced (namely, the repair can be realized without replacing the whole non-contact temperature sensor 10, and the later maintenance cost is greatly reduced).

Further, referring to fig. 5, in some embodiments, the non-contact temperature sensor 10 further includes a sealing ring 300, and the sealing ring 300 is packaged at a position where the sealing ring 120 is screwed with the plug 120. It should be noted that the sealing ring 300 plays a role of sealing protection, and prevents external conductive liquid (e.g., water droplets) from entering the inner cavity 130, which may cause internal damage to the non-contact temperature sensor 10. Preferably, the seal ring 300 is a rubber seal ring, and the seal ring 300 made of rubber has a stronger sealing performance.

Further, referring to fig. 2, in some embodiments, the protective sheath 212 is provided with a fool-proof protrusion 212a. It should be noted that the fool-proof protrusion 212a plays a fool-proof role to prevent the operator from plugging the non-contact temperature sensor 10.

Further, referring to fig. 2, in some embodiments, the protecting cover 212 is provided with two fastening grooves 211b at two sides, and the two fastening grooves 211b prevent the center of the protecting cover 212 from being distributed in a mirror image. It should be noted that, the opening of the snap groove 211b corresponds to a snap protrusion in the insertion opening of the external measuring device, and when the non-contact temperature sensor 10 is inserted into the external measuring device, the snap protrusion can be snapped into the snap groove 211b to complete the positioning and fixing of the non-contact temperature sensor 10.

Further, referring to fig. 4, in some embodiments, the probe sleeve body 110 is provided with a heat conductive copper layer 111 at an outer wall position. It should be noted that the heat conductive copper layer 111 can improve the heat transfer efficiency of the probe sleeve 110, so that heat can be transferred into the inner cavity 130 more quickly.

Further, referring to fig. 3, in some embodiments, the connection terminal 230 includes a connection post 231, a connection pin 232, and a soldering portion 233, the connection post 231 is disposed in the connection plug 210, the connection pin 232 is disposed in the protection cover 212 and connected to one end of the connection post 231, the soldering portion 2333 is disposed in the inner cavity 130, the soldering portion 233 and the other end of the connection post 231, one end of the thermistor 220, or the other end of the thermistor 220 is soldered to the soldering portion 233.

The connection post 231 serves as an "intermediate bridge" connecting the connection pin 232 and the soldering portion 233. The connection pins 232 are structural members for connecting the contactless temperature sensor 10 with an external measuring device. The welding portion 233 is a welding position region of the thermistor 220.

Further, referring to fig. 4, in some embodiments, the soldering portion 233 is formed with a positioning hole 233a. The positioning hole 233a functions as a positioning hole, and can improve the efficiency of mounting the thermistor 220 by an operator.

Further, referring to fig. 3, in some embodiments, the probing sleeve 110 and the sealing ring 120 are integrally formed. The design of the integral structure can improve the overall mechanical strength of the heat conductive sleeve 100 and prolong the service life of the heat conductive sleeve 100.

The solution of the present application has been described in detail hereinabove with reference to the drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A non-contact temperature sensor, comprising:

temperature sensor, temperature sensor includes bayonet joint, thermistor and two grafting ends, the bayonet joint is equipped with the external screw thread in outer wall position department, the bayonet joint with sealing ring looks spiro union, the bayonet joint is kept away from the terminal surface of sealing ring is equipped with the lag, two the grafting end is all located in the bayonet joint, two the one end of grafting end all is located in the lag, thermistor is located in the inner chamber, thermistor's one end welds in one of them the grafting is served, thermistor's the other end welds in another the grafting is served.

2. The non-contact temperature sensor according to claim 1, further comprising a sealing ring, wherein the sealing ring is sealed at a position where the sealing ring is screwed with the plug.

3. The non-contact temperature sensor according to claim 2, wherein the seal is a rubber seal.

4. The non-contact temperature sensor of claim 1, wherein the protective sheath is provided with a fool-proof protrusion.

5. The non-contact temperature sensor according to claim 4, wherein the protective sheath has snap grooves formed at both sides thereof, and the two snap grooves are arranged in a mirror image manner at the center of the protective sheath.

6. The contactless temperature sensor according to claim 1, wherein the sensing sleeve has a heat conductive copper layer on an outer wall thereof.

7. The non-contact temperature sensor according to claim 1, wherein the plug end comprises a connection post, a plug pin and a welding portion, the connection post is disposed in the plug, the plug pin is disposed in the protective sleeve and connected to one end of the connection post, the welding portion is disposed in the inner cavity, the welding portion is welded to the other end of the connection post, one end of the thermistor or the other end of the thermistor.

8. The non-contact temperature sensor of claim 7, wherein the soldering portion has a positioning hole.

9. The non-contact temperature sensor according to any one of claims 1 to 8, wherein the sensing sleeve and the sealing ring are of an integrally formed structure.