Integrated probe for detecting temperature and liquid level

Abstract

The utility model provides an integrated probe for detecting temperature and liquid level. The integrated probe comprises a probe shell, a detection assembly and a vessel shell, the probe shell comprises a first shell and a second shell, and the second shell is arranged above the first shell; the detection assembly comprises a temperature detection piece and a liquid level detection piece and is arranged in the probe shell, and the probe shell is fixedly arranged at the bottom of the vessel shell. The probe has the advantages that the detection assembly is fixed in the probe shell through the filling glue, the cable of the detection assembly is led out independently, the temperature detection piece and the liquid level detection piece work independently and do not affect each other, the cable is further provided with a sleeve, and the influence of an external magnetic field on the accuracy and stability of detection data is reduced; the temperature detection part and the liquid level detection part work independently, so that later maintenance and troubleshooting are facilitated; the cable of the detection assembly is also provided with a shielding layer and a shielding cable, and the shielding cable is connected with the grounding device, so that the signal output by the detection assembly is more stable, and the anti-interference capability of the detection assembly is improved.

Description

Technical Field

[0001] The utility model relates to the field of drinking containers, in particular to an integrated probe for detecting temperature and liquid level. Background Art

[0002] With the popularization of smart home products, the market of smart kettles is also expanding rapidly. Smart kettles usually have functions such as automatic pumping, heating, and temperature and liquid level monitoring, which not only improve the safety and convenience of use of electric kettles, but also ensure the hygienic safety of drinking water and provide a better user experience.

[0003] In modern industrial systems, sensors are key components for achieving automatic control and intelligent control. However, usually there is not only one or one type of sensor in a system, but generally multiple and multiple types of sensors. The signals of multiple and multiple types of sensors may interfere with each other during the transmission process, resulting in a decrease in measurement accuracy. Especially in high-temperature or high-humidity environments, it will affect the reliability and stability of data, posing potential safety hazards to users. Traditional kettles usually adopt independent liquid level sensors and temperature sensors. This design not only occupies a large amount of internal space, but also increases the complexity of installation and maintenance. And multiple and multiple types of sensors work simultaneously, which are easily affected by electromagnetic interference in the surrounding environment, affecting the accuracy and stability of detection data. Summary of the Utility Model

[0004] The utility model provides an integrated probe for detecting temperature and liquid level to more precisely solve the problems of poor anti-interference ability and low measurement accuracy of the above detection device.

[0005] The utility model is realized through the following technical solutions:

[0006] The utility model provides an integrated probe for detecting temperature and liquid level, including a probe housing, a detection component, several cables, and a vessel housing; the detection component is arranged in the probe housing, and the probe housing is snap-fitted and fixed to the bottom of the vessel housing;

[0007] The probe housing includes a first housing and a second housing, and the second housing is arranged above the first housing;

[0008] The detection component includes a temperature detection element and a liquid level detection element. The temperature detection element and the liquid level detection element are respectively fixed in the probe housing, and the detection component also includes several cables, and the cables are electrically connected to external devices;

[0009] A placement hole is arranged at the bottom of the vessel housing, and the second housing is fixed in the placement hole.

[0010] Further, the cable includes a liquid level signal cable, a temperature signal cable, a first cable, and a second cable, and a sleeve is provided on the outer side of the cable;

[0011] The sleeve includes a first sleeve and a second sleeve. The first sleeve is provided on the outer sides of the first cable and the second cable, and a shielding layer is provided on the outer sides of the liquid level signal cable, the temperature signal cable, and the first sleeve. The second sleeve is provided on the outer side of the shielding layer.

[0012] Further, the first housing and the second housing are of a cylindrical structure and are arranged in a "convex" shape at the bottom of the vessel housing. The protruding second housing of the probe housing faces the inside of the vessel housing.

[0013] Further, the outer diameter of the second housing is smaller than that of the first housing, and the height of the second housing is greater than that of the first housing.

[0014] Further, the diameter of the placement hole is greater than or equal to the outer diameter of the second housing.

[0015] Further, the first housing is provided with a groove for placing the temperature detection component and the liquid level detection component. The opening of the groove faces the outside of the vessel housing, and the groove extends to the second housing.

[0016] Further, a gasket is provided on the outer surface of the second housing, and the gasket fixes the second housing in the placement hole.

[0017] Further, the temperature detection component and the liquid level detection component are arranged at intervals in the groove.

[0018] Further, the groove is filled with a filling adhesive for fixing the detection assembly.

[0019] Further, structural adhesive is further provided at the bottom of the first housing, and the structural adhesive is used for fixing and sealing the detection assembly.

[0020] Further, one ends of the sleeve and the shielding layer are respectively abutted against the structural adhesive, and the shielding layer is further provided with a shielding cable for shielding external interference.

[0021] Further, the liquid level signal cable, the temperature signal cable, the first cable, and the second cable are respectively electrically connected to an external device.

[0022] Advantages of the present utility model:

[0023] An integrated probe for detecting temperature and liquid level proposed by the present utility model includes a probe housing, a detection component, and a vessel housing; the temperature detection element and the liquid level detection element of the detection component are fixed in the groove of the probe housing through filling glue, and the cables of the detection component are led out separately, enabling the temperature detection element and the liquid level detection element to work independently of each other, preventing interference between the temperature detection element and the liquid level detection element during operation, and also being more conducive to later maintenance and troubleshooting. The cables of the detection component are respectively provided with a first sleeve and a second sleeve to prevent the cables of the detection component from being exposed to the air and being affected by the electromagnetic field of the surrounding environment. A shielding layer is provided between the first sleeve and the second sleeve, and a shielding cable is provided on the shielding layer. The shielding cable is connected to a grounding device, which can effectively reduce electromagnetic interference (EMI) and radio frequency interference (RFI), and improve the anti-interference ability of the detection component. Description of the Drawings

[0024] Figure 1 It is a perspective view of an integrated probe for detecting temperature and liquid level in an embodiment of the present utility model;

[0025] Figure 2 It is a top view of the integrated probe in an embodiment of the present utility model;

[0026] Figure 3 It is a bottom view of the integrated probe in an embodiment of the present utility model;

[0027] Figure 4 For the Figure 2 cross-sectional schematic view at A-A in the present utility model;

[0028] Figure 5 It is a perspective view of the probe housing of the integrated probe in an embodiment of the present utility model;

[0029] Figure 6 It is a structural schematic view of the probe housing, the detection component, and the washer of the integrated probe in an embodiment of the present utility model;

[0030] Figure 7 It is a structural schematic view of the probe housing and the vessel housing of the integrated probe in an embodiment of the present utility model.

[0031] Reference numerals: probe housing 1, first housing 11, second housing 12, groove 13, detection component 2, temperature detection element 21, liquid level detection element 22, cable 23, liquid level signal cable 231, temperature signal cable 232, first cable 233, second cable 234, sleeve 3, first sleeve 31, second sleeve 32, shielding layer 4, shielding cable 41, vessel housing 5, placement hole 51, filling glue 6, structural glue 7, washer 8. Detailed Embodiment

[0032] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0033] Please refer to Figures 1-7 , the present invention provides an integrated probe for detecting temperature and liquid level, including a probe housing 1, a detection component 2, a plurality of cables 23 and a vessel housing 5; the detection component 2 is arranged in the probe housing 1, and the probe housing 1 is snap-fitted and fixed to the bottom of the vessel housing 5; the probe housing 1 includes a first housing 11 and a second housing 12, and the second housing 12 is arranged above the first housing 11; the detection component 2 includes a temperature detection element 21 and a liquid level detection element 22, and the temperature detection element 21 and the liquid level detection element 22 are respectively fixed in the probe housing 1; and the detection component 2 further includes a plurality of cables 23, and the cables 23 are electrically connected to an external device; a placement hole 51 is provided at the bottom of the vessel housing 5, and the second housing 12 is fixed in the placement hole 51.

[0034] In this embodiment, the probe housing 1 includes a first housing 11 and a second housing 12, both of which are cylindrical structures. The second housing 12 is disposed above the first housing 11. The central axis of the second housing 12 is collinear with the central axis of the first housing 11, and the outer diameter of the second housing 12 is smaller than that of the first housing 11. The second housing 12 and the first housing 11 are arranged in a "convex" shape at the bottom of the vessel housing 5, and the protruding second housing 12 of the probe housing 1 faces into the vessel housing 5. The second housing 12 and the vessel housing 5 are embedded, reducing the space occupied by the probe housing 1 in the vessel housing 5. The vessel housing 5 includes, but is not limited to, a kettle and a water cup. A placement hole 51 is provided at the bottom of the vessel housing 5, and the diameter of the placement hole 51 is greater than or equal to the outer diameter of the second housing 12, which is more conducive to later maintenance and repair. During assembly, the second housing 12 of the probe housing 1 is snap-fitted with the placement hole 51 of the vessel housing 5 and fixed to the bottom of the vessel housing 5. A groove 13 is provided in the first housing 11 of the probe housing 1, and the groove 13 extends to the second housing 12 of the probe housing 1. The detection assembly 2 includes a temperature detection element 21 and a liquid level detection element 22. The detection assembly 2 is disposed in the groove 13, and the groove 13 is filled with a filling adhesive 6 to fix the detection assembly 2. The temperature detection element 21 and the liquid level detection element 22 of the detection assembly 2 are spaced apart by the filling adhesive 6, enabling the temperature detection element 21 and the liquid level detection element 22 to work independently without affecting each other. The cable 23 includes a liquid level signal cable 231, a temperature signal cable 232, a first cable 233, and a second cable 234. Among them, a first sleeve 31 is provided on the first cable 233 and the second cable 234, and a shielding layer 4 is provided on the outside of the liquid level signal cable 231, the temperature signal cable 232, and the first sleeve 31. A second sleeve 32 is provided on the outside of the shielding layer 4. The settings of the first sleeve 31 and the second sleeve 32 can prevent the cable 23 of the detection assembly 2 from being exposed, which may affect the accuracy and stability of the detection data. A shielding cable 41 is provided on the shielding layer 4, and the shielding cable is connected to the grounding device, which can reduce electromagnetic interference (EMI) and radio frequency interference (RFI), improve the anti-interference ability of the detection assembly 2, and make the signal output by the detection assembly 2 more stable. A structural adhesive 7 is further provided at the bottom of the first housing 11 of the probe housing 1. The structural adhesive 7 further fixedly connects the detection assembly 2 to the probe housing 1, and the structural adhesive 7 also adheres to one end of the sleeve 3 and the shielding layer 4, enhancing the sealing performance of the detection assembly 2. When the detection assembly 2 is integrated into the whole machine, it can also be compatible with more detection elements.

[0035] Please refer to Figures 1-4, the cable 23 includes a liquid level signal cable 231, a temperature signal cable 232, a first cable 233 and a second cable 234. A sleeve 3 is provided on the outer side of the cable 23; the sleeve 3 includes a first sleeve 31 and a second sleeve 32. The first sleeve 31 is provided on the outer sides of the first cable 233 and the second cable 234, and a shielding layer 4 is provided on the outer sides of the liquid level signal cable 231, the temperature signal cable 232 and the first sleeve 31. The second sleeve 32 is provided on the outer side of the shielding layer 4.

[0036] In specific implementation: The cable 23 includes a liquid level signal cable 231, a temperature signal cable 232, a first cable 233 and a second cable 234. The liquid level signal cable 231, the temperature signal cable 232, the first cable 233 and the second cable 234 are separately led out and electrically connected to external devices, so that the temperature detection element 21 and the liquid level detection element 22 can work independently. Changing the two-wire system of the prior art to a four-wire system can avoid the problem of signal crosstalk caused by the parallel connection of the detection components 2 and improve the measurement accuracy. Among them, the outer sides of the first cable 233 and the second cable 234 are wrapped with a first sleeve 31, the outer sides of the liquid level signal cable 231, the temperature signal cable 232 and the first sleeve 31 are wrapped with a shielding layer 4, and the second sleeve 32 is provided on the outer side of the shielding layer 4 to prevent the cable 23 from being exposed and interfering with the detection components 2. The sleeve 3 is a heat shrinkable tube, and the heat shrinkable tube includes at least one of polyvinyl chloride (PVC), polyethylene (PE), and polyester heat shrinkable tube (PET), and has effects such as insulation and corrosion prevention, wear resistance and low melting point, waterproof sealing, and high adhesiveness.

[0037] Please refer to Figures 6-7 , the first housing 11 and the second housing 12 are cylindrical structures and are arranged in a "convex" shape at the bottom of the vessel housing 5, and the protruding second housing 12 of the probe housing 1 faces the inside of the vessel housing 5.

[0038] In specific implementation: Both the first housing 11 and the second housing 12 of the probe housing 1 are cylindrical structures and are arranged in a "convex" shape at the bottom of the vessel housing 5, and the protruding second housing 12 of the probe housing 1 faces the inside of the vessel housing 5. The first housing 11 and the second housing 12 are mainly made of SUS304 stainless steel material. The first housing 11 and the second housing 12 include but are not limited to SUS304 stainless steel material. SUS304 stainless steel has corrosion resistance, high temperature strength and good workability, making the processing technology of the probe housing 1 simpler. The first housing 11 is provided with a groove 13, the detection component 2 is arranged in the groove 13, the second housing 12 is embedded in the vessel housing 5, and the cable 23 of the detection component 2 is arranged outside the vessel housing 5, which can prevent the cable 23 from contacting the liquid inside the vessel housing 5 and getting damp and causing a short circuit; the first housing 11 of the probe housing 1 is arranged outside the vessel housing 5, so that the probe housing 1 can be stably clamped and fixed in the placement hole of the vessel housing 5 and will not be easily displaced.

[0039] Please refer to Figures 5-7 , the outer diameter of the second housing 12 is smaller than that of the first housing 11, and the height of the second housing 12 is greater than that of the first housing 11.

[0040] In specific implementation: the outer diameter of the second housing 12 is smaller than that of the first housing 11. During assembly, the second housing 12 is embedded inside the vessel housing 5, facilitating the detection component 2 to measure the liquid inside the outer shell of the vessel; the first housing 11 of the probe housing 1 is snapped onto the outside of the vessel housing 5, facilitating the fixing of the probe housing 1 on the placement hole of the vessel housing 5, making the assembly more convenient and more conducive to the later maintenance of the product. The height of the second housing 12 is greater than that of the first housing 11, and the height of the first housing 11 is one-fourth of the overall height of the probe housing 1. During assembly, the first housing 11 of the probe housing 1 fits more closely and beautifully with the bottom of the vessel housing 5.

[0041] Please refer to Figures 5-7 , the diameter of the placement hole 51 is greater than or equal to the outer diameter of the second housing 12.

[0042] In specific implementation: the diameter of the placement hole 51 is greater than or equal to the outer diameter of the second housing 12, enabling snap-fit connection between the second housing 12 of the probe housing 1 and the placement hole 51 of the vessel housing 5, so that the probe housing 1 does not easily detach from the vessel housing 5.

[0043] Please refer to Figures 4-5 , the first housing 11 is provided with a groove 13 for placing the temperature detection component 21 and the liquid level detection component 22. The opening of the groove 13 faces the outside of the vessel housing 5, and the groove 13 extends to the second housing 12.

[0044] In specific implementation: the first housing 11 of the probe housing 1 is provided with a groove 13. The opening of the groove 13 faces the outside of the vessel housing 5, and the groove 13 extends to the second housing 12. The temperature detection component 21 and the liquid level detection component 22 are placed in the groove 13, enabling the cable 23 of the detection component 2 to be led out separately. The central axis of the placement hole 51 of the vessel housing 5 is collinear with the central axis of the groove 13 of the first housing 11, facilitating the liquid level detection component 22 to measure the highest liquid level in the vessel housing 5, reducing the measurement error, and improving the detection accuracy.

[0045] Please refer to Figure 6 , a washer is provided on the outer surface of the second housing, and the washer fixes the second housing in the placement hole.

[0046] In specific implementation: A washer 8 is also provided on the outer surface of the second housing 12. During assembly, the washer 8 is deformed under the extrusion of the inner surface of the placement hole 51, making the assembly of the second housing 12 and the placement hole 51 more closely fitted to prevent liquid leakage in the vessel housing 5. Among them, the probe housing 1 is further fixed to the bottom of the vessel housing 5 through an external screw and a gasket, making the connection between the probe housing 1 and the vessel housing 5 more firm.

[0047] Please refer to Figure 6 , the temperature detection component 21 and the liquid level detection component 22 are arranged at intervals in the groove 13.

[0048] In specific implementation: The temperature detection component 21 and the liquid level detection component 22 of the detection component 2 are arranged in the groove 13. The temperature detection component 21 is made of semiconductor material. The temperature detection component 21 includes but is not limited to an NTC temperature sensor (Negative Temperature Coefficient Sensor, which is an NTC temperature sensor. Among them, NTC is Negative Temperature Coefficient, referring to semiconductor materials or components with a large negative temperature coefficient). The resistivity of the NTC temperature sensor decreases as the temperature rises, and the resistance value will decrease. By measuring the change in the resistance value, the change in the liquid temperature in the vessel housing 5 can be accurately reflected. The liquid level detection component 22 is made of piezoelectric material. The liquid level detection component 22 includes but is not limited to an ultrasonic liquid level sensor. The ultrasonic liquid level sensor determines the water level height of the liquid by measuring the propagation speed of ultrasonic waves in the liquid and the echo time, and has the advantages of high precision, high stability and strong anti-interference ability. There is a filling glue 6 in the groove 13 of the first housing 11. The filling glue 6 fixes the temperature detection component 21 and the liquid level detection component 22 in the groove 13, and the filling glue 6 also separates the temperature detection component 21 and the liquid level detection component 22, realizing the interval arrangement of the temperature detection component 21 and the liquid level detection component 22, and preventing interference between the temperature detection component 21 and the liquid level detection component 22 during operation.

[0049] Please refer to Figures 3-4 , the groove 13 is filled with a filling glue 6 for fixing the detection component 2.

[0050] In specific implementation: The detection component 2 is arranged in the groove 13, and the groove 13 is provided with a filling glue 6 for fixing the detection component 2; the filling glue 6 is made of an epoxy resin material with a relatively high thermal conductivity, and the filling glue 6 includes but is not limited to epoxy resin materials. After curing, the epoxy resin material has the effects of high hardness, high strength and low water absorption.

[0051] Please refer to Figures 2-4 , there is also a structural glue 7 at the bottom of the first housing 11, and the structural glue 7 is used to fix and seal the detection component 2.

[0052] In specific implementation: Structural adhesive 7 is also provided at the bottom of the first housing 11 of the probe housing 1. The structural adhesive 7 fixes and seals the temperature detection element 21 and the liquid level detection element 22 in the probe housing 1, preventing the temperature detection element 21 and the liquid level detection element 22 from loosening and shifting, which may interfere with the measured data. The structural adhesive 7 has the effects of high strength, anti-peeling, impact resistance, aging resistance, and corrosion resistance, and has no thermal effect and deformation on the detection assembly 2. The structural adhesive 7 covers the groove 13. The size of the structural adhesive 7 has a diameter less than 10 mm and a height less than 0.5 mm. The setting of the structural adhesive 7 enhances the sealing performance of the detection assembly 2.

[0053] Please refer to Figures 1-4 , one end of the sleeve 3 and the shielding layer 4 are respectively abutted against the structural adhesive 7, and the shielding layer 4 is also provided with a shielding cable 41 for shielding external interference.

[0054] In specific implementation: The cable 23 of the detection assembly 2 is provided with a first sleeve 31 and a second sleeve 32. The shielding layer 4 is arranged outside the liquid level signal cable 231, the temperature signal cable 232, and the first sleeve 31, and is located between the first sleeve 31 and the second sleeve 32. The same end of the sleeve 3 and the shielding layer 4 are respectively abutted against the structural adhesive 7 at the bottom of the first housing 11 of the probe housing 1, preventing the cable 23 of the detection assembly 2 from being exposed to the air and being affected by the electromagnetic field of the surrounding environment. The shielding layer 4 is provided with a shielding cable 41 for shielding external interference. The shielding cable 41 of the shielding layer 4 is connected to the grounding device, which can effectively reduce electromagnetic interference (EMI) and radio frequency interference (RFI), and improve the anti-interference ability of the detection assembly 2.

[0055] Please refer to Figures 1-4 , the liquid level signal cable 231, the temperature signal cable 232, the first cable 233, and the second cable 234 are respectively led out separately and electrically connected to an external device.

[0056] In specific implementation: The liquid level signal cable 231, the temperature signal cable 232, the first cable 233, and the second cable 234 are respectively led out separately and electrically connected to an external device, enabling the temperature detection element 21 and the liquid level detection element 22 to work independently, making the signals output by the detection assembly 2 more stable, preventing signal crosstalk caused by parallel connection, and affecting the accuracy of the measured data. The temperature detection element 21 and the liquid level detection element 22 work independently, and the configuration and parameters of the detection assembly 2 can be adjusted separately, which is more conducive to later maintenance and troubleshooting of faults. The position of the cable 23 of the detection assembly 2 can be wired according to the requirements of the actual situation.

[0057] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present application.

Claims

1. An integrated probe for detecting temperature and liquid level, characterized in that: It includes a probe housing, a detection component, a plurality of cables and a vessel housing; the detection component is arranged in the probe housing, and the probe housing is fixed to the bottom of the vessel housing by snapping; The probe housing comprises a first housing and a second housing, wherein the second housing is arranged above the first housing; The detection assembly includes a temperature detection component and a liquid level detection component, the temperature detection component and the liquid level detection component are respectively fixed in the probe housing, and the detection assembly also includes a plurality of cables, and the cables are electrically connected to an external device; The bottom of the vessel shell is provided with a placement hole, and the second shell is fixedly arranged in the placement hole.

2. The integrated probe for detecting temperature and liquid level according to claim 1, characterized in that: The cables include a liquid level signal cable, a temperature signal cable, a first cable and a second cable, and a sleeve is provided on the outer side of the cables; The sleeve includes a first sleeve and a second sleeve, the first sleeve is arranged on the outside of the first cable and the second cable, and a shielding layer is arranged on the outside of the liquid level signal cable, the temperature signal cable and the first sleeve, and the second sleeve is arranged on the outside of the shielding layer.

3. The integrated probe for detecting temperature and liquid level according to claim 1, characterized in that: The first shell and the second shell are cylindrical structures and are arranged in a convex shape at the bottom of the vessel shell, and the convex second shell of the probe shell faces the inside of the vessel shell.

4. The integrated probe for detecting temperature and liquid level according to claim 3, characterized in that: The outer diameter of the second shell is smaller than the outer diameter of the first shell, and the height of the second shell is greater than the height of the first shell.

5. The integrated probe for detecting temperature and liquid level according to claim 1, characterized in that: The diameter of the placement hole is greater than or equal to the outer diameter of the second shell.

6. The integrated probe for detecting temperature and liquid level according to claim 5, characterized in that: The first shell is provided with a groove for placing the temperature detection element and the liquid level detection element, the groove opening faces the outside of the vessel shell, and the groove extends to the second shell.

7. An integrated probe for detecting temperature and liquid level according to claim 6, characterized in that: A gasket is provided on the outer surface of the second shell, and the gasket fixes the second shell in the placement hole.

8. The integrated probe for detecting temperature and liquid level according to claim 6, characterized in that: The temperature detecting component and the liquid level detecting component are arranged in the groove at intervals.

9. The integrated probe for detecting temperature and liquid level according to claim 6, characterized in that: The groove is filled with filling glue for fixing the detection component.

10. The integrated probe for detecting temperature and liquid level according to claim 2, characterized in that: The bottom of the first shell is also provided with structural adhesive, and the structural adhesive is used to fix and seal the detection component.

11. An integrated probe for detecting temperature and liquid level according to claim 10, characterized in that: One end of the sleeve and the shielding layer are respectively in contact with the structural adhesive, and the shielding layer is also provided with a shielding cable for shielding external interference.

12. The integrated probe for detecting temperature and liquid level according to claim 2, characterized in that: The liquid level signal cable, the temperature signal cable, the first cable and the second cable are electrically connected to external devices respectively.

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