CN212988626U - High-sensitivity easy-to-install intelligent temperature measurement type NTC temperature sensor for bathtub - Google Patents
High-sensitivity easy-to-install intelligent temperature measurement type NTC temperature sensor for bathtub Download PDFInfo
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- CN212988626U CN212988626U CN202021790716.3U CN202021790716U CN212988626U CN 212988626 U CN212988626 U CN 212988626U CN 202021790716 U CN202021790716 U CN 202021790716U CN 212988626 U CN212988626 U CN 212988626U
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Abstract
The utility model relates to a high sensitive easy installation intelligence temperature measurement NTC temperature sensor for bathtub. The NTC temperature sensor comprises an NTC thermistor and a lead, wherein a bullet sleeve is sleeved at the outer end of the NTC thermistor and is of a three-stage structure, the diameter of the bullet sleeve is increased step by step from the NTC thermistor to the lead, and the bullet sleeve comprises a first-stage sleeve, a second-stage sleeve and a third-stage sleeve; the end part of the bullet head sleeve is provided with a temperature sensing head, and the NTC thermistor is tightly attached to the end part of the first-stage sleeve; the diameter of the first-stage sleeve of the bullet head sleeve is 1.70 +/-0.05 mm, the diameter of the third-stage sleeve of the bullet head sleeve is 3.9 +/-0.1 mm, and a fixing ring with the diameter of 5.4 +/-0.1 mm is arranged on the third-stage sleeve of the bullet head sleeve; and epoxy resin layers are filled in the NTC thermistor and the inner side wall of the bullet sleeve. The temperature sensor packaging material is easy to process and has good waterproof performance; the structure is simple and easy to install; the response speed is fast, and the sensitivity is high.
Description
Technical Field
The utility model belongs to the technical field of temperature sensor, concretely relates to high sensitive easy installation intelligence temperature measurement NTC temperature sensor for bathtub.
Background
The intelligent bathtub belongs to a product of bathroom renewal and generation, caters to the development trend of humanized bathroom in the future, adopts the NTC temperature sensor to measure the temperature in the intelligent bathtub in the prior art, utilizes the characteristic that the NTC thermistor has resistance value along with temperature variation, and is finished through processing such as welding, insulating encapsulation.
To the NTC temperature sensor who is applicable to the bathtub, the core technical requirement design temperature measurement is fast, and job stabilization, the installation of being convenient for can adapt to the survey under the different environment, and the interference killing feature is strong, high voltage resistant, and the precision is high, waterproof ability, novel NTC temperature sensor that the response ability is strong. The NTC temperature sensor for the intelligent bathtub in the prior art usually adopts epoxy resin produced in China, so that the heat resistance is poor, the corrosion resistance is low, and the service life of the temperature sensor is influenced; because the temperature sensor is installed in a narrow space, the installation is limited, the temperature sensor can not be well attached to a temperature measuring surface, and the response speed is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the defects, the utility model provides a high-sensitivity easy-to-install intelligent temperature-measuring type NTC temperature sensor for bathtub, the packaging material is easy to process, and the waterproof performance is good; the structure is simple and easy to install; the response speed is fast, and the sensitivity is high.
The utility model provides a technical scheme that its technical problem adopted as follows: the NTC temperature sensor for the high-sensitivity easy-to-install intelligent temperature measurement type bathtub comprises an NTC thermistor and a lead, wherein one end of the lead is electrically connected with the NTC thermistor, the other end of the lead is connected with a terminal, a bullet sleeve is sleeved at the outer end of the NTC thermistor and is of a three-stage structure, the diameter of the bullet sleeve is increased step by step from the NTC thermistor to the lead, the contact end of the bullet sleeve and the NTC thermistor is a first-stage sleeve, the end with the largest diameter of the bullet sleeve is a third-stage sleeve, and a second-stage sleeve is arranged between the first-stage sleeve and the third-stage sleeve and serves as a transition pipe; the end part of the bullet head sleeve is provided with a temperature sensing head, and the NTC thermistor is tightly attached to the end part of the first-stage sleeve; the diameter of the first-stage sleeve of the bullet head sleeve is 1.70 +/-0.05 mm, the diameter of the third-stage sleeve of the bullet head sleeve is 3.9 +/-0.1 mm, and a fixing ring with the diameter of 5.4 +/-0.1 mm is arranged on the third-stage sleeve of the bullet head sleeve; and the NTC thermistor and the inner side wall of the bullet sleeve are filled with epoxy resin layers, and the epoxy resin layers adopt epoxy resin meeting ROHS requirements.
The NTC temperature sensor for the bathtub introduces the bullet sleeve with a three-level structure, the diameter of the first-level sleeve with the temperature sensing head bullet sleeve is 1.7mm, and compared with a temperature sensing head shell with the diameter of 2.1mm adopted in the prior art, the diameter of the first-level sleeve is reduced, the temperature sensing surface is more attached, the response speed of the temperature sensor is improved, and the sensitivity is high; only the fixing ring with the diameter of 5.4mm is arranged on the third-stage sleeve, and a copper ring with the diameter of 6.9mm and the thickness of 3.4mm, which is commonly used in the prior art, is removed, so that the material cost is reduced, the installation is convenient, and the device is more suitable for the field of digital temperature measurement and control of equipment in a narrow space; the bullet sleeve with the three-level structure can better protect the NTC thermistor, and the waterproof performance is good; the epoxy resin meeting the ROHS requirement is introduced as the filler, the epoxy resin has the advantages of good corrosion resistance, effective mildew resistance, strong adhesion, low shrinkage during curing and good heat resistance, can effectively fill the gap between the NTC thermistor and the bullet head sleeve, has good shrinkage, well protects the NTC thermistor, can effectively improve the stability of the product, and is convenient to install after being cured and formed.
Further, the NTC thermistor is a single-end NTC element, and the diameter of the element is 0.8 mm. The NTC thermistor adopts an element with the diameter of 0.8 to replace an element with the diameter of 1.3mm or 2.3mm in the prior art to be made into a sensor, and has better long-term stability and wider temperature range; the element is sealed by glass, the element is easy to shape and processed into a complex shape, the NTC thermistor is convenient and fast to connect with a lead, and the operation is simplified; because the glass is insulated, the NTC thermistor is not influenced by extra temperature when working, the measurement is accurate, and the response speed is high.
Furthermore, the NTC thermistor and the end part of the bullet sleeve are provided with heat-conducting silicone grease, and the heat conductivity coefficient of the heat-conducting silicone grease is 3.0W/m.k. The heat-conducting silicone grease with the heat conductivity coefficient has the advantages of good heat conductivity, good insulativity, wide use temperature range, wide range of the manufactured temperature sensor and good stability, and also has the function of filling gaps between the bullet sleeve and the NTC thermistor, so that the heat conduction is smoother and quicker, the corresponding speed of the temperature sensor is increased, and the sensitivity is high.
Further, the bullet head sleeve is made of S316 stainless steel. The S316 stainless steel is adopted, so that the corrosion of the internal NTC thermistor can be effectively avoided, and the waterproof performance is good; the bullet head sleeve pipe structure is special, effectively reduces material cost, changes in the installation.
Furthermore, a waterproof plastic shell is arranged outside the terminal, and the terminal and the waterproof plastic shell form a plug part. The waterproof plastic shell is introduced outside the terminal, so that the short circuit caused by the contact of water vapor at the terminal is avoided, and the safety is improved; the connection mode between the temperature sensor and the water purifier can be simplified by the plug part formed by the terminal and the waterproof plastic shell, and the installation and the maintenance are convenient.
The utility model has the advantages that:
1. the NTC temperature sensor for the bathtub introduces the bullet sleeve with a three-level structure, the diameter of the first-level sleeve with the temperature sensing head bullet sleeve is 1.7mm, and compared with a temperature sensing head shell with the diameter of 2.1mm adopted in the prior art, the diameter of the first-level sleeve is reduced, the temperature sensing surface is more attached, the response speed of the temperature sensor is improved, and the sensitivity is high; only the fixing ring with the diameter of 5.4mm is arranged on the third-stage sleeve, and a copper ring with the diameter of 6.9mm and the thickness of 3.4mm, which is commonly used in the prior art, is removed, so that the material cost is reduced, the installation is convenient, and the device is more suitable for the field of digital temperature measurement and control of equipment in a narrow space; the bullet sleeve with the three-level structure can better protect the NTC thermistor, and the waterproof performance is good; the epoxy resin meeting the ROHS requirement is introduced as the filler, the epoxy resin has the advantages of good corrosion resistance, effective mildew resistance, strong adhesion, low shrinkage during curing and good heat resistance, can effectively fill the gap between the NTC thermistor and the bullet head sleeve, has good shrinkage, well protects the NTC thermistor, can effectively improve the stability of the product, and is convenient to install after being cured and formed.
2. The NTC thermistor adopts an element with the diameter of 0.8 to replace an element with the diameter of 1.3mm or 2.3mm in the prior art to be made into a sensor, and has better long-term stability and wider temperature range; the element is sealed by glass, the element is easy to shape and processed into a complex shape, the NTC thermistor is convenient and fast to connect with a lead, and the operation is simplified; because the glass is insulated, the NTC thermistor is not influenced by extra temperature when working, the measurement is accurate, and the response speed is high.
3. The heat-conducting silicone grease has the advantages of good heat conductivity, good insulativity, wide application temperature range, wide range of the manufactured temperature sensor and good stability, and the heat-conducting silicone grease also has the function of filling gaps between the bullet sleeve and the NTC thermistor, so that the heat conduction is more smooth and rapid, the corresponding speed of the temperature sensor is improved, and the sensitivity is high.
4. The S316 stainless steel is adopted, so that the corrosion of the internal NTC thermistor can be effectively avoided, and the waterproof performance is good; the bullet sleeve has a special structure, so that the material cost is effectively reduced, and the bullet sleeve is easier to install; the waterproof plastic shell is introduced outside the terminal, so that the short circuit caused by the contact of water vapor at the terminal is avoided, and the safety is improved; the connection mode between the temperature sensor and the water purifier can be simplified by the plug part formed by the terminal and the waterproof plastic shell, and the installation and the maintenance are convenient.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
wherein: the temperature-sensing and temperature-sensing device comprises an NTC thermistor 1, an epoxy resin layer 2, a bullet sleeve 3, a first-stage sleeve 31, a second-stage sleeve 32, a third-stage sleeve 33, a temperature-sensing head 34, a fixing ring 35, a lead 4, a terminal 5, a waterproof plastic shell 6 and heat-conducting silicone grease 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the high-sensitivity easy-to-install intelligent temperature measuring type NTC temperature sensor for a bathtub comprises an NTC thermistor 1 and a lead 4, wherein one end of the lead 4 is electrically connected with the NTC thermistor 1, the other end of the lead 4 is connected with a terminal 5, a waterproof plastic shell 6 is arranged outside the terminal 5, and the terminal 5 and the waterproof plastic shell 6 form a plugging part; the outer end of the NTC thermistor 1 is sleeved with a bullet sleeve 3, the bullet sleeve 3 is of a three-level structure, the diameter of the bullet sleeve 3 is gradually increased from the NTC thermistor 1 to a lead 4, the contact end of the bullet sleeve 3 and the NTC thermistor 1 is a first-level sleeve 31, the end with the largest diameter of the bullet sleeve 3 is a third-level sleeve 33, and a second-level sleeve 32 is arranged between the first-level sleeve 31 and the third-level sleeve 33 and serves as a transition pipe; the end part of the bullet sleeve 3 is provided with a temperature sensing head 34, and the NTC thermistor 1 is tightly attached to the end part of the first-stage sleeve 31; the NTC thermistor 1 is a single-end NTC element, the diameter of the element is 0.8mm, the diameter of a first-stage sleeve 31 of the bullet sleeve 3 is 1.70 +/-0.05 mm, the diameter of a third-stage sleeve 33 of the bullet sleeve 3 is 3.9 +/-0.1 mm, and a fixing ring 35 with the diameter of 5.4 +/-0.1 mm is arranged on the third-stage sleeve 33 of the bullet sleeve 3; the NTC thermistor 1 and the inner side wall of the bullet sleeve 3 are filled with an epoxy resin layer 2, and the epoxy resin layer 2 is made of epoxy resin meeting ROHS requirements; the NTC thermistor 1 and the end part of the bullet sleeve 3 are provided with heat-conducting silicone grease 7, the heat-conducting coefficient of the heat-conducting silicone grease 7 is 3.0W/m.k, and the bullet sleeve 3 is made of S316 stainless steel;
the lead 4 is XLPE 28AWG/2C white irradiation line with temperature resistance of 150 ℃, the terminal 5 is a TJC3-TER/CWB terminal, and the waterproof plastic shell 6 is a TJC3-2Y CWB plastic body.
According to the high-sensitivity easy-to-install NTC temperature sensor for the intelligent temperature measurement type bathtub, the epoxy resin meeting the ROHS requirement is adopted, the reliability of the product is improved, and the high-sensitivity easy-to-install NTC temperature sensor is convenient to install after being cured and formed; the high-thermal-conductivity insulating material heat-conducting silicone grease is adopted to fill the gap, so that heat conduction is smoother and quicker, and the sensor achieves high response speed and high sensitivity; the NTC thermistor made of the element with the diameter of 0.8 has good stability and high sensitivity; the packaging material is easy to process and has good waterproof performance; the bullet head shell is made of S316 stainless steel, the special structure reduces the material cost, and the bullet head shell is easier to install, so that the bullet head shell has wider application field.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. High sensitive easy installation intelligence temperature measurement NTC temperature sensor for bathtub, including NTC thermistor, wire one end is connected with NTC thermistor electricity, the wire other end is connected with terminal, its characterized in that: the outer end of the NTC thermistor is sleeved with a bullet sleeve, the bullet sleeve is of a three-stage structure, the diameter of the bullet sleeve is gradually increased from the NTC thermistor to a lead, the contact end of the bullet sleeve and the NTC thermistor is a first-stage sleeve, the end with the largest diameter of the bullet sleeve is a third-stage sleeve, and a second-stage sleeve is arranged between the first-stage sleeve and the third-stage sleeve and serves as a transition pipe; the end part of the bullet head sleeve is provided with a temperature sensing head, and the NTC thermistor is tightly attached to the end part of the first-stage sleeve; the diameter of the first-stage sleeve of the bullet head sleeve is 1.70 +/-0.05 mm, the diameter of the third-stage sleeve of the bullet head sleeve is 3.9 +/-0.1 mm, and a fixing ring with the diameter of 5.4 +/-0.1 mm is arranged on the third-stage sleeve of the bullet head sleeve; and the NTC thermistor and the inner side wall of the bullet sleeve are filled with epoxy resin layers, and the epoxy resin layers adopt epoxy resin meeting ROHS requirements.
2. The NTC temperature sensor for the high-sensitivity easy-to-install intelligent temperature measuring type bathtub according to claim 1, wherein: the NTC thermistor is a single-end NTC element, and the diameter of the element is 0.8 mm.
3. The NTC temperature sensor for the high-sensitivity easy-to-install intelligent temperature measuring type bathtub according to claim 1, wherein: the NTC thermistor and the bullet sleeve end are provided with heat-conducting silicone grease, and the heat conductivity coefficient of the heat-conducting silicone grease is 3.0W/m·k。
4. The NTC temperature sensor for the high-sensitivity easy-to-install intelligent temperature measuring type bathtub according to claim 1, wherein: the bullet head sleeve is made of S316 stainless steel.
5. The NTC temperature sensor for the high-sensitivity easy-to-install intelligent temperature measuring type bathtub according to claim 1, wherein: the terminal is provided with a waterproof plastic shell outside, and the terminal and the waterproof plastic shell form a plug part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021790716.3U CN212988626U (en) | 2020-08-25 | 2020-08-25 | High-sensitivity easy-to-install intelligent temperature measurement type NTC temperature sensor for bathtub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021790716.3U CN212988626U (en) | 2020-08-25 | 2020-08-25 | High-sensitivity easy-to-install intelligent temperature measurement type NTC temperature sensor for bathtub |
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| Publication Number | Publication Date |
|---|---|
| CN212988626U true CN212988626U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021790716.3U Active CN212988626U (en) | 2020-08-25 | 2020-08-25 | High-sensitivity easy-to-install intelligent temperature measurement type NTC temperature sensor for bathtub |
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| Country | Link |
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| CN (1) | CN212988626U (en) |
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- 2020-08-25 CN CN202021790716.3U patent/CN212988626U/en active Active
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