A temperature sensor with waterproof function

Abstract

The present invention provides a temperature sensor with a waterproof function, comprising a central processing unit, a sensing unit, a connecting rod, a telescopic module and a waterproof module, wherein the waterproof module comprises a waterproof shell, a shock absorbing unit and a heat dissipation unit, the waterproof shell is sleeved on the outside of the temperature sensor, the interior of the waterproof shell is divided into a first cavity and a second cavity by a partition, the central processing unit and the telescopic module are located in the first cavity, the sensing unit is arranged in the second cavity, the sensing unit can be extended out of the second cavity, the second cavity is provided with a through hole for the sensing unit to extend, the second cavity is provided with a waterproof component, the central processing unit is connected to one end of the telescopic module through the connecting rod, the other end of the telescopic module is connected to the sensing unit, the central processing unit is connected to the sensing unit signal, the shock absorbing unit is arranged in the waterproof shell, and the heat dissipation unit is arranged on the outer wall of the waterproof shell.

Description

Technical Field

[0001] The invention relates to the technical field of rice cooker sensors, and in particular to a temperature sensor with a waterproof function. Background Art

[0002] A temperature sensor is a sensor that can sense temperature and convert it into a usable output signal. Temperature sensors are the core of temperature measuring instruments. There are many types of temperature sensors, which can be divided into two categories according to the measurement method: contact type and non-contact type.

[0003] The sensors of rice cookers mostly use contact temperature sensors. Contact temperature sensors achieve thermal equilibrium through conduction or convection, so that the indication of the thermometer can directly represent the temperature of the object being measured. Generally, the measurement accuracy is high. Within a certain temperature measurement range, the thermometer can also measure the temperature distribution inside the object. However, for moving objects, small targets or objects with very small heat capacity, large measurement errors will be generated. Commonly used thermometers include bimetallic thermometers, glass liquid thermometers, pressure thermometers, resistance thermometers, thermistors and thermocouples. They are widely used in industry, agriculture, commerce and other departments. People also often use these thermometers in daily life. With the wide application of cryogenic technology in defense engineering, space technology, metallurgy, electronics, food, medicine and petrochemical industries and the research of superconducting technology, low-temperature thermometers that measure temperatures below 120K have been developed, such as low-temperature gas thermometers, vapor pressure thermometers, acoustic thermometers, paramagnetic salt thermometers, quantum thermometers, low-temperature thermal resistors and low-temperature thermocouples. Low-temperature thermometers require small temperature sensing elements, high accuracy, good reproducibility and stability. The carburized glass thermal resistor made by carburizing and sintering porous high-silicon oxide glass is a temperature sensing element of a low-temperature thermometer and can be used to measure temperatures in the range of 1.6 to 300K.

[0004] In actual use, the contact temperature sensor is often affected by the water mist in the rice cooker when used outside, which damages the internal components of the temperature sensor, shortens its service life, and has poor waterproof effect. It may also cause problems such as damage to the temperature sensor or reduced detection accuracy. Summary of the invention

[0005] Based on this, in order to solve the problem of waterproofing of the temperature sensor in the rice cooker, the present invention provides a temperature sensor with waterproof function, and its specific technical solution is as follows:

[0006] A temperature sensor with a waterproof function comprises a central processing unit, a sensing unit, a connecting rod, a telescopic module and a waterproof module, wherein the waterproof module comprises a waterproof shell, a shock absorbing unit and a heat dissipation unit, the waterproof shell is sleeved on the outside of the temperature sensor, the interior of the waterproof shell is divided into a first cavity and a second cavity by a partition, the central processing unit and the telescopic module are located in the first cavity, the sensing unit is arranged in the second cavity, the sensing unit can extend out of the second cavity, the second cavity is provided with a through hole for the sensing unit to extend, the second cavity is provided with a waterproof component, the central processing unit is connected to one end of the telescopic module through the connecting rod, the other end of the telescopic module is connected to the sensing unit, the central processing unit is connected to the sensing unit signal, the shock absorbing unit is arranged in the waterproof shell, and the heat dissipation unit is arranged on the outer wall of the waterproof shell.

[0007] In the above scheme, the central processing unit is arranged in the first cavity of the waterproof shell to be sealed and waterproof, which can effectively protect the components in the central processing unit and the telescopic module; the sensing unit is arranged in the second cavity of the waterproof shell. After the sensing unit is extended from the second cavity to measure the temperature, the waterproof component absorbs the moisture in contact with the sensing unit in time, which effectively prevents the moisture from corroding the sensing unit; the shock-absorbing unit is used to improve the stability of the sensor and prevent the temperature sensor from colliding with the waterproof shell; the heat dissipation unit is used to reduce the temperature inside the waterproof shell; this product has a simple structure and is quick and easy to use.

[0008] Furthermore, the waterproof component includes a water-absorbing sponge, and the water-absorbing sponge is arranged in the second cavity.

[0009] Furthermore, the heat dissipation unit includes a plurality of heat dissipation holes, the heat dissipation holes are arranged on the outer shell of the first cavity, and the inner holes of the heat dissipation holes are provided with a waterproof and breathable membrane.

[0010] Furthermore, the waterproof breathable membrane comprises a PP spunbonded nonwoven fabric and a PE polymer breathable membrane, and the front and rear end surfaces of the PE polymer breathable membrane are both provided with the PP spunbonded nonwoven fabric.

[0011] Furthermore, the shock absorbing unit includes a shock absorbing spring, which is arranged in the first cavity, one end of the shock absorbing spring is connected to the inner wall of the first cavity, and the other end of the shock absorbing spring is connected to the central processing part.

[0012] Furthermore, the telescopic module includes a fixing seat and a driving cylinder, the fixing seat is fixedly connected to the connecting rod, the driving cylinder is fixed to the fixing seat, and a power output shaft of the driving cylinder is connected to the sensing part.

[0013] Furthermore, a waterproof gasket is provided at the connection between the partition and the sensing part.

[0014] Furthermore, the second cavity is provided with a side door.

[0015] Furthermore, the waterproof component includes a latex sleeve arranged in the through hole.

[0016] Furthermore, the thickness of the latex sleeve is 0.05-0.09 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0018] Figure 1 This is one of the structural schematic diagrams of a temperature sensor with a waterproof function in one embodiment of the present invention;

[0019] Figure 2 It is a schematic structural diagram of a waterproof and breathable membrane of a temperature sensor with a waterproof function in one embodiment of the present invention;

[0020] Figure 3 It is one of the partial schematic diagrams of a temperature sensor with waterproof function in one embodiment of the present invention;

[0021] Figure 4 This is a second partial schematic diagram of a temperature sensor with waterproof function in one embodiment of the present invention;

[0022] Figure 5 This is a second structural schematic diagram of a temperature sensor with a waterproof function in one embodiment of the present invention;

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Central processing unit; 2. Sensing unit; 3. Connecting rod; 4. Waterproof shell; 5. Water-absorbing sponge; 6. Heat dissipation hole; 7. Waterproof breathable membrane; 8. PP spunbond non-woven fabric; 9. PE polymer breathable membrane; 10. Shock-absorbing spring; 11. Fixed seat; 12. Driving cylinder; 13. Waterproof gasket; 14. Partition; 15. First cavity; 16. Second cavity; 17. Thermal insulation cotton; 18. Latex sleeve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0028] like Figure 1 As shown, a temperature sensor with a waterproof function in an embodiment of the present invention comprises a central processing unit 1, a sensing unit 2, a connecting rod 3, a telescopic module and a waterproof module, wherein the waterproof module comprises a waterproof housing 4, a shock absorbing unit and a heat dissipation unit, the waterproof housing 4 is sleeved on the outside of the temperature sensor, the interior of the waterproof housing 4 is divided into a first cavity 15 and a second cavity 16 by a partition 14, the central processing unit 1 and the telescopic module are located in the first cavity 15, the sensing unit 2 is arranged in the second cavity 16, the sensing unit 2 can extend out of the second cavity 16, the second cavity 16 is provided with a through hole for the sensing unit 2 to extend out of the waterproof housing 4, the second cavity 16 is provided with a waterproof component, the central processing unit 1 is connected to one end of the telescopic module through the connecting rod 3, the other end of the telescopic module is connected to the sensing unit 2, the central processing unit 1 is signal-connected to the sensing unit 2, the shock absorbing unit is arranged in the waterproof housing 4, and the heat dissipation unit is arranged on the outer wall of the waterproof housing 4.

[0029] In the above scheme, the central processing unit 1 is arranged in the first cavity 15 of the waterproof shell 4 to be sealed and waterproof, which can effectively protect the components in the central processing unit 1 and the telescopic module; the sensing unit 2 is arranged in the second cavity 16 of the waterproof shell 4; after the sensing unit 2 is extended from the second cavity 16 for temperature measurement, the waterproof component absorbs the moisture in contact with the sensing unit 2 in time, effectively preventing the moisture from corroding the sensing unit 2; the shock-absorbing unit is used to improve the stability of the sensor and prevent the temperature sensor from colliding with the waterproof shell 4; the heat dissipation unit is used to reduce the temperature in the waterproof shell 4; this product has a simple structure and is quick and easy to use.

[0030] In one embodiment, the waterproof component includes a water-absorbing sponge 5, which is arranged in the second cavity 16. The sensing part 2 extends out of the second cavity 16 under the drive of the telescopic module to sense the environment that requires temperature measurement. After the sensing is completed, it retracts under the drive of the telescopic module. At this time, the water-absorbing sponge 5 absorbs the moisture on the sensing part 2 in time to prevent the moisture from corroding the sensing part 2.

[0031] In one embodiment, the heat dissipation unit includes a plurality of heat dissipation holes 6, and the heat dissipation holes 6 are arranged on the outer shell of the first cavity 15, and the inner holes of the heat dissipation holes 6 are provided with a waterproof breathable membrane 7. The heat generated in the waterproof outer shell 4 can be dissipated through the heat dissipation holes 6, and external moisture cannot enter the waterproof outer shell 4 through the waterproof breathable membrane 7.

[0032] The working principle of the waterproof breathable membrane 7 is as follows: gas particles are very small, and according to the principle of capillary motion, they can smoothly penetrate the waterproof breathable membrane to the other side, thereby causing ventilation. When the gas condenses into water droplets, the particles become larger, and due to the surface tension of the water droplets (the water molecules "pull and counterbalance" each other), the water molecules cannot smoothly break away from the water droplets and penetrate to the other side, that is, water penetration is prevented, so that the waterproof breathable membrane 7 has a waterproof function.

[0033] like Figure 2 As shown, in one embodiment, the waterproof breathable membrane 7 includes a PP spunbonded nonwoven fabric 8 and a PE polymer breathable membrane 9, and the front and rear end surfaces of the PE polymer breathable membrane 9 are provided with the PP spunbonded nonwoven fabric 8. The main function of the PP spunbonded nonwoven fabric 8 is to enhance the tension and hydrostatic pressure and protect the PE polymer breathable membrane 9 of the middle layer, and the PE polymer breathable membrane 9 is used for ventilation.

[0034] In one embodiment, the PE polymer breathable membrane 9 is made of polytetrafluoroethylene, which is resistant to acids, alkalis, and various organic solvents and is almost insoluble in all solvents. At the same time, the waterproof breathable membrane is resistant to high temperatures.

[0035] In one embodiment, the shock absorbing unit includes a shock absorbing spring 10, which is disposed in the first cavity 15, one end of the shock absorbing spring 10 is connected to the inner wall of the first cavity 15, and the other end of the shock absorbing spring 10 is connected to the central processing unit 1. The shock absorbing spring 10 is used to improve the stability of the sensor and prevent the temperature sensor from colliding with the waterproof housing 4.

[0036] In one embodiment, the telescopic module includes a fixing seat 11 and a driving cylinder 12, wherein the fixing seat 11 is fixedly connected to the connecting rod 3, the driving cylinder 12 is fixed to the fixing seat 11, and the power output shaft of the driving cylinder 12 is connected to the sensing part 2. The sensing part 2 is driven to extend or retract by the driving cylinder 12.

[0037] In one embodiment, a waterproof gasket 13 is provided at the connection between the partition 14 and the sensing part 2 to improve the airtightness in the first cavity 15 and prevent the moisture in the water-absorbing sponge 5 in the second cavity 16 from entering the first cavity 15 .

[0038] In one embodiment, the second cavity 16 is provided with a side door to facilitate taking out the water-absorbing foam for replacement.

[0039] like Figure 3 As shown, in one of the embodiments, the waterproof component includes a latex sleeve 18 arranged in the through hole; in this embodiment, there is no need to arrange a water-absorbing sponge 5 in the second cavity 16. When the driving cylinder 12 drives the sensing part 2 to extend, the latex sleeve 18 is sleeved on the outside of the sensing part 2. The sensing part 2 does not need to be in direct contact with the object to be measured. The latex sleeve 18 adopts an ultra-thin design and will not have a significant impact on the measurement result. At the same time, it ensures that the sensing part 2 remains dry.

[0040] In one embodiment, the thickness of the latex sleeve 18 is 0.05-0.09 mm.

[0041] like Figure 4 As shown, in one embodiment, the waterproof component includes a water-absorbing sponge 5 and a latex sleeve 18 arranged in the through hole, and the water-absorbing sponge 5 is arranged in the second cavity 16. Under normal circumstances, when the driving cylinder 12 drives the sensing part 2 to extend, the latex sleeve 18 is sleeved on the outside of the sensing part 2, and the sensing part 2 does not need to be in direct contact with the object to be measured. Since the latex sleeve 18 is relatively thin and easy to break, when the latex sleeve 18 breaks and the sensing part 2 comes into contact with moisture, the sensing part 2 retracts, and the moisture on the sensing part 2 is absorbed by the water-absorbing sponge 5.

[0042] like Figure 5 As shown, in one embodiment, the waterproof shell 4 also includes a heating component, and the heating component includes a heat preservation cotton 17 arranged in the first cavity 15 and a heating unit arranged outside the waterproof shell 4.

[0043] When the measurement needs to be performed in an extremely low temperature environment, the central processing unit 1 may not be able to work when the temperature is too low. At this time, the heat dissipation unit is cancelled, a heating component is added, and thermal insulation cotton 17 is filled in the first cavity 15 to prevent freezing. At the same time, a heating unit is set at the end of the first cavity 15 casing away from the sensing part 2 to keep the central processor at normal temperature.

[0044] In one embodiment, the heating unit includes a power source 19 and a heating resistor 20 . The power source 19 is disposed in the waterproof housing 4 , and the heating resistor 20 is disposed at an end of the waterproof housing 4 away from the sensing part 2 .

[0045] In one embodiment, the thermal insulation cotton 17 comprises high-purity clay clinker, alumina powder, silica powder and chrome sand, and the thermal insulation cotton 17 is formed by melting the high-purity clay clinker, alumina powder, silica powder and chrome sand at high temperature in an industrial electric furnace, and then the thermal insulation cotton 17 is formed by blowing compressed air or spinning with a spinning machine into fibers, and then the fibers are collected by a cotton collector to form the thermal insulation cotton 17.

[0046] In one of the embodiments, the waterproof shell 4 is made of a transparent polycarbonate plate, which is an ultra-high molecular amorphous polymer material and has the advantages of high strength, high toughness, explosion resistance, smash resistance, high temperature and high pressure resistance, and monomer V0 grade flame retardancy, and can effectively protect the internal temperature sensor.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A temperature sensor with waterproof function, characterized in that: The invention comprises a central processing unit, a sensing unit, a connecting rod, a telescopic module and a waterproof module, wherein the waterproof module comprises a waterproof shell, a shock absorbing unit and a heat dissipation unit, wherein the waterproof shell is sleeved on the outside of the temperature sensor, and the interior of the waterproof shell is divided into a first cavity and a second cavity by a partition, wherein the central processing unit and the telescopic module are located in the first cavity, and the sensing unit is arranged in the second cavity, wherein the sensing unit can extend out of the second cavity, and a through hole for extending the sensing unit is arranged on the second cavity, and a waterproof component is arranged in the second cavity, wherein the central processing unit is connected to one end of the telescopic module through the connecting rod, and the other end of the telescopic module is connected to the sensing unit, and the central processing unit is connected to the telescopic module. The sensing part signal is connected, the shock absorbing unit is arranged in the waterproof shell, the heat dissipation unit is arranged on the outer wall of the waterproof shell, the heat dissipation unit includes a plurality of heat dissipation holes, the heat dissipation holes are arranged in the shell of the first cavity, the inner holes of the heat dissipation holes are provided with a waterproof breathable membrane, the shock absorbing unit includes a shock-absorbing spring, the shock-absorbing spring is arranged in the first cavity, one end of the shock-absorbing spring is connected to the inner wall of the first cavity, and the other end of the shock-absorbing spring is connected to the central processing part, the telescopic module includes a fixed seat and a driving cylinder, the fixed seat is fixedly connected to the connecting rod, the driving cylinder is fixed to the fixed seat, and the power output shaft of the driving cylinder is connected to the sensing part.

2. A temperature sensor with waterproof function according to claim 1, characterized in that: The waterproof component includes a water-absorbing sponge, and the water-absorbing sponge is arranged in the second cavity.

3. A temperature sensor with waterproof function according to claim 1, characterized in that: The waterproof breathable membrane comprises a PP spunbonded nonwoven fabric and a PE polymer breathable membrane, and the front and rear end surfaces of the PE polymer breathable membrane are both provided with the PP spunbonded nonwoven fabric.

4. A temperature sensor with waterproof function according to claim 1, characterized in that: A waterproof gasket is provided at the connection between the partition and the sensing part.

5. The temperature sensor with waterproof function according to claim 2, characterized in that: The second cavity is provided with a side door.

6. A temperature sensor with waterproof function according to claim 1, characterized in that: The waterproof assembly includes a latex sleeve disposed in the through hole.

7. A temperature sensor with waterproof function according to claim 6, characterized in that: The thickness of the latex sleeve is 0.05-0.09 mm.

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