CN210719454U - Temperature sensor for ultra-low temperature refrigerator - Google Patents
Temperature sensor for ultra-low temperature refrigerator Download PDFInfo
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- CN210719454U CN210719454U CN201921979006.2U CN201921979006U CN210719454U CN 210719454 U CN210719454 U CN 210719454U CN 201921979006 U CN201921979006 U CN 201921979006U CN 210719454 U CN210719454 U CN 210719454U
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- protection tube
- low temperature
- temperature sensor
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Abstract
The utility model relates to a temperature sensor for ultra-low temperature refrigerator, which comprises a protection tube and a data transmission connecting wire, wherein the protection tube is arranged into a cylindrical cavity structure with a sealed bottom, one end of the data transmission connecting wire is embedded into a connecting hole at one end of the protection tube, the other end of the data transmission connecting wire is provided with an installation fixing block, a platinum resistor is arranged in the protection tube and is arranged into a rectangular structure, the platinum resistor and the axis of the protection tube are axially and vertically arranged, the upper end and the lower end of one side of the platinum resistor are symmetrically provided with two connecting points which are respectively connected with connecting blocks on the data transmission connecting wire through connecting rods, the outer side of the connecting part of the platinum resistor and the data transmission connecting wire is evenly provided with waterproof resin, the filling resin is arranged between the waterproof resin and the inner wall of the protection tube, the size precision is high, and the installation and the use are more convenient.
Description
Technical Field
The utility model relates to the technical field of freezer temperature sensor, mainly relate to a temperature sensor for ultra-low temperature freezer.
Background
Along with the rapid progress and development of our society, the refrigerator is used at present, the requirements of people on life are relatively high due to the improvement of living environment and conditions, particularly in the aspect of food, so that the refrigerator is required to keep the food fresh, some stored food stored for a long time is required to be stored at ultralow temperature, and therefore the ultralow temperature freezer is required to be subjected to real-time temperature detection, at the moment, the temperature acquisition function of a temperature sensor is very important, but the epoxy resistor is basically adopted as an element to perform temperature acquisition in the existing product, but the material and the structure have general low-temperature performance, the temperature measurement error is large, and a PC (personal computer) tube is adopted for packaging and cannot bear very low temperature; the electric wire adopts PVC double-row electric wire, and is fragile at extremely low temperature, can't use, both reduced the precision of temperature acquisition on very big success, increased the cost of changing simultaneously again.
Therefore, the utility model provides a temperature sensor for ultra-low temperature freezer, structure through to temperature sensor improves, through the cooperation between adopting platinum resistance and the waterproof resin, and measuring error is little, the thermal conductivity is good, corrosion resistance is strong, can effectual improvement temperature measurement's precision, size precision is high, more easy to assemble uses, wrap up platinum resistance and the data transmission connecting wire is complete in the protective tube simultaneously, can effectually bear lower temperature, can effectually protect the original paper, the problem of electric wire rupture when the effectual ultra-low temperature that prevents, reduce the replacement cost to a great extent, just become the problem that the skilled person in the art needs to solve urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a temperature sensor for ultra-low temperature freezer, structure through to temperature sensor improves, through the cooperation that adopts between platinum resistance and the waterproof resin, and measuring error is little, the heat conductivility is good, corrosion resistance is strong, can effectual improvement temperature measurement's precision, size precision is high, more easy to assemble uses, wrap up platinum resistance and the complete parcel of data transmission connecting wire in the protective tube simultaneously, can effectually bear lower temperature, can effectually protect the original paper, the problem of electric wire rupture when effectually preventing the ultra-low temperature, reduce the replacement cost in very big degree.
For solving the background art in technical problem, the utility model discloses a following technical scheme:
the utility model provides a temperature sensor for ultra-low temperature freezer, includes protection tube and data transmission connecting wire, the protection tube establish to the cylindrical cavity structure that the bottom sealed, data transmission connecting wire one end imbed in the connecting hole of protection tube one end, the data transmission connecting wire other end on be equipped with the connecting block of installation, the protection tube in be equipped with platinum resistance, platinum resistance establish to the rectangle structure, and the axle center of platinum resistance and protection tube sets up for axial vertical, the upper and lower both ends symmetry of platinum resistance one side be equipped with two tie points, two the tie point be connected through the connecting block on connecting rod and the data transmission connecting wire respectively, platinum resistance and data transmission connecting wire's the junction outside evenly be equipped with waterproof resin, waterproof resin and protection tube inner wall between be equipped with the packing resin.
Preferably, connecting block and connecting rod between constitute the welding layer through the welding mode, welding layer department be equipped with isolation protection device, isolation protection device including insulating pyrocondensation pipe and tin coating, the tin coating evenly paint in welding layer surface department, and insulating pyrocondensation pipe wraps up in welding layer department completely, through scribbling the protection to the welding layer, can effectual improvement water-proof effects, avoid electric leakage phenomenon.
Preferably, the insulating heat-shrinkable tube uses a Teflon heat-shrinkable tube, the heat-shrinkable tube is made of Teflon material, the durability is strong, the heat-shrinkable tube cannot be damaged after long-time use, welding spots are sleeved, the welding spots are completely wrapped, and the two welding spots can be isolated to play an insulating role.
Preferably, the platinum resistor is provided with two connecting rods which are arranged in an inner extension crossing mode, and an extension included angle between the two connecting rods is 30 degrees, so that the conductive stability of the connecting rods on the platinum resistor can be effectively improved, and the precision during temperature transmission is improved.
Preferably, waterproof resin establish to irregular ripple type structure, and waterproof resin and packing through the waterproof glue close bonding connection of heat conduction between the resin, the insulating protection structure of multilayer irregular shape, can effectually improve the adhesion degree and the protection intensity of outer parcel to platinum resistance, can effectually prevent and treat the invasion of external moisture, can effectually insulate platinum resistance itself with the external world, guarantee the normal electrical characteristics of product.
Preferably, the platinum resistor is a PT100 platinum resistor, two pins of the platinum resistor are respectively welded on a data transmission connecting line through a welding spot, the A-level precision PT100 platinum resistor is adopted, the measurement error is accurate to +/-0.15 ℃, the stability is strong, the resistance of the platinum resistor shows very good linear change when the external temperature changes, the reproducibility is good, and the performance is very stable.
The utility model has the advantages that:
1) through the cooperation between platinum resistance and the waterproof resin, and measuring error is little, and thermal conductivity is good, and corrosion resistance is strong, can effectual improvement temperature measurement's precision, and size precision is high, and is easy to assemble more and uses.
2) Simultaneously with the complete parcel of platinum resistance and data transmission connecting wire in the protective tube, can effectually bear lower temperature, can effectually protect the original paper, the problem of electric wire rupture when the effectual ultra-low temperature that prevents reduces the replacement cost to a great extent.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is the utility model relates to a temperature sensor's for ultra-low temperature freezer structural schematic diagram.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail below.
Referring to fig. 1, a temperature sensor for an ultra-low temperature freezer includes a protection tube 2 and a data transmission connection line 1, the protection tube 2 is a cylindrical cavity structure with a sealed bottom, one end of the data transmission connecting wire 1 is embedded into a connecting hole at one end of the protection tube 2, the other end of the data transmission connecting line 1 is provided with a connecting block 4, a platinum resistor 7 is arranged in the protective tube 2, the platinum resistor 7 is of a rectangular structure, the axis of the platinum resistor 7 and the axis of the protective tube 2 are axially and vertically arranged, the upper end and the lower end of one side of the platinum resistor 7 are symmetrically provided with two connecting points 9, the two connecting points 9 are respectively connected with the connecting block 4 on the data transmission connecting line 1 through the connecting rod 6, the outer side of the joint of the platinum resistor 7 and the data transmission connecting line 1 is uniformly provided with waterproof resin 8, and filling resin 3 is arranged between the waterproof resin 8 and the inner wall of the protection tube 2.
In this embodiment, connecting block 4 and connecting rod 6 between constitute welding layer 5 through the welding mode, welding layer 5 department be equipped with isolation protection device, isolation protection device include insulating pyrocondensation pipe 10 and tin coating, the tin coating evenly paint in welding layer 5 surface department, and insulating pyrocondensation pipe 10 wraps up in welding layer 5 department completely, paints the protection through welding layer 5, can effectual improvement water-proof effects, avoids electric leakage phenomenon.
In this embodiment, the insulating heat shrinkable tube 10 uses a teflon heat shrinkable tube, the insulating heat shrinkable tube 10 is made of teflon material, the durability is strong, the long-time use is not damaged, the welding spot is completely wrapped by the sleeve welding spot, and the two welding spots can be isolated to play an insulating role.
In this embodiment, two connecting rods 6 on the platinum resistor 7 between the interior extension cross mode setting, and the extension contained angle between two connecting rods 6 is 30 degrees, can effectual improvement platinum resistor 7 go up the electrically conductive stability of connecting rod, precision when improving the temperature transmission.
In this embodiment, waterproof resin 8 establish to irregular ripple type structure, and through the waterproof glue of heat conduction close adhesion connection between waterproof resin 8 and the packing resin 3, the insulating protection structure of the irregular shape of multilayer can effectual improvement outer parcel to platinum resistance 7's adhesion degree and protective strength, can the invasion of the external moisture of effectual prevention and cure, can be effectual insulate platinum resistance 7 itself with the external world, guarantee the normal electrical characteristics of product.
In this embodiment, the platinum resistor 7 is a PT100 platinum resistor, two pins of the platinum resistor 7 are respectively welded to the data transmission connection line through a welding spot, the PT100 platinum resistor with a class a precision is adopted, the measurement error is accurate to ± 0.15 ℃, the stability is strong, the resistance of the platinum resistor shows very good linear change when the external temperature changes, and the platinum resistor has good reproducibility and very stable performance.
In specific implementation, the SUS304 stainless steel pipe is adopted, so that the food grade requirement is met, and the refrigerator is safer when storing food, strong in corrosion resistance and good in heat conduction; this part workable, size control precision is high, easy to assemble uses, the electric wire normal use under the extremely low temperature environment of 60 degrees centigrade below zero, low temperature resistance can be good, this part is that the insulating skin material of data transmission connecting wire teflon electric wire is the teflon material, accord with the UL standard, it is strong to navigate corrosivity, this part is the teflon pyrocondensation pipe, the pyrocondensation pipe is the teflon material, high durability, long-time use can not be damaged, overlap the solder joint department, wrap up the solder joint completely, can be isolated with two welding points, play insulating effect.
The resistance parameter of the platinum resistor 7 is transmitted through the wire, and the resin has excellent heat-conducting property, so that the product can quickly sense the external temperature change; when the external temperature is alternately cold and hot, the expansion coefficients of the stainless steel resistor and the platinum resistor are different, and the specific part can play a role in buffering.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a temperature sensor for ultra-low temperature freezer, includes protection tube and data transmission connecting wire, its characterized in that: the protection tube establish the cylindrical cavity structure that the bottom sealed, data transmission connecting wire one end in embedding the connecting hole of protection tube one end, the data transmission connecting wire other end on be equipped with the connecting block of installation, the protection tube in be equipped with platinum resistance, platinum resistance establish to the rectangle structure, and the axle center of platinum resistance and protection tube sets up for axial vertical, the upper and lower both ends symmetry of platinum resistance one side be equipped with two tie points, two the tie point be connected through connecting rod and the connecting block on the data transmission connecting wire respectively, the junction outside of platinum resistance and data transmission connecting wire evenly be equipped with waterproof resin, waterproof resin and protection tube inner wall between be equipped with the packing resin.
2. The temperature sensor for the ultra-low temperature refrigerator according to claim 1, wherein a welding layer is formed between the connecting block and the connecting rod by welding, an isolation protection device is arranged at the welding layer, the isolation protection device comprises an insulation heat shrink tube and a tin coating, the tin coating is uniformly coated at the surface of the welding layer, and the insulation heat shrink tube is completely wrapped at the welding layer.
3. The temperature sensor for an ultra-low temperature refrigerator according to claim 2, wherein the insulating heat shrinkage tube is a teflon heat shrinkage tube.
4. The temperature sensor for the ultra-low temperature refrigerator according to claim 1, wherein the two connection rods of the platinum resistor are arranged in an inner extension crossing manner, and an extension included angle between the two connection rods is 30 degrees.
5. The temperature sensor for an ultra-low temperature refrigerator according to claim 1, wherein the waterproof resin is formed in an irregular corrugated structure, and the waterproof resin and the filling resin are closely bonded and connected by a heat-conductive waterproof adhesive.
6. The temperature sensor for the ultra-low temperature refrigerator according to claim 1, wherein the platinum resistor is PT100 platinum resistor, and two pins of the platinum resistor are welded to the data transmission connection line through a welding spot, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921979006.2U CN210719454U (en) | 2019-11-15 | 2019-11-15 | Temperature sensor for ultra-low temperature refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921979006.2U CN210719454U (en) | 2019-11-15 | 2019-11-15 | Temperature sensor for ultra-low temperature refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210719454U true CN210719454U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921979006.2U Active CN210719454U (en) | 2019-11-15 | 2019-11-15 | Temperature sensor for ultra-low temperature refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210719454U (en) |
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2019
- 2019-11-15 CN CN201921979006.2U patent/CN210719454U/en active Active
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