Safety isolation water detection device

Abstract

The utility model discloses a safety isolation water detection device which comprises an insulating shell, a temperature detection module and a capacitive water level detection module, at least part of the shell is provided with an insulating heat conduction part, the temperature detection module is arranged in the shell, and the capacitive water level detection module is arranged in the shell. The temperature detection module is in contact with the insulating heat conduction part to form a temperature detection signal, the water level detection module is arranged in the shell, the water level detection module is in contact with the inner wall surface of the shell to form at least part of a capacitive water level detection structure, and the water level detection module can form a water level detection signal. The design combines water temperature and water level detection functions, is safe and reliable to use, and reduces the production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic detection device technical field, especially relate to a safe isolation water detection device. BACKGROUND

[0002] The existing health preserving pot, water heater and other electric appliances' water storage cavity usually installs temperature sensor and water level sensor, the temperature sensor is used for detecting water temperature, and the water level sensor is used for detecting the water level in the water storage cavity, therefore, two positions on the wall surface of the water storage cavity need to be installed, the process is relatively troublesome, and the production cost increases.

[0003] And part of the manufacturers consider combining the internal temperature sensor and the water level sensor, the detection mode of the temperature sensor is usually that the heat in the water is conducted to the temperature sensor through the metal or alloy shell, and the temperature sensor detects the temperature to form a temperature detection signal, since the power supply used by the temperature sensor is mostly non-safety isolation power supply AC 220V step-down rectification to DC 5V output, therefore, the temperature sensor obtains heat through the metal or alloy shell, and there is a risk of electric leakage, which can cause a safety hazard to the user, and can also interfere with the detection of the integrated water level sensor. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the prior art. Therefore, the utility model provides a safe isolation water detection device, which combines water temperature and water level detection functions, is safe and reliable to use, and reduces production cost.

[0005] The safe isolation water detection device according to the first aspect of the utility model comprises an insulating shell, at least part of the shell is provided with an insulating heat conducting part, a temperature detection module is arranged in the shell, the temperature detection module is in contact with the insulating heat conducting part to form a temperature detection signal, and a capacitive water level detection module is arranged in the shell.

[0006] The safe isolation water detection device according to the utility model has at least the following beneficial effects:

[0007] The utility model discloses safe isolation water detecting device, temperature detection module and water level detection module are all contained in the same insulating casing, and the insulating casing is provided with the insulating heat conduction part, and temperature detection module contacts the insulating heat conduction part, and the heat of water can be passed to temperature detection module through the insulating heat conduction part, and temperature detection module forms temperature detection signal, because the casing and the insulating heat conduction part are all insulated, temperature detection module is not easy to leak electricity outward, and water level detection module can also contact the inner wall surface of the casing to constitute the capacitive water level detection structure of at least partial, and the capacitive water level detection structure is close to the outer wall of the kettle, when the water level in the kettle drops, the position corresponding to the capacitive water level detection structure in the kettle exposes to the water surface and contacts the air, and the charge amount of the capacitive water level detection structure changes, and water level detection module can judge and form water level detection signal, and the design combines water temperature and water level detection function, is safe and reliable in use, and reduces production cost.

[0008] According to some embodiments of the utility model, the casing is provided with a mounting port, and the casing is provided with an insulating and heat-conducting assembly part, which is arranged in the casing and located in the mounting port to form the insulating heat-conducting part.

[0009] According to some embodiments of the utility model, the assembly part is composed of a heat-conducting ceramic material.

[0010] According to some embodiments of the utility model, a circuit board is arranged in the casing, and the temperature detection module and the water level detection module are arranged on the circuit board and isolated from each other.

[0011] According to some embodiments of the utility model, a cavity is arranged in the casing, the circuit board is arranged in the cavity, and an elastic structure is arranged between the inner wall of the casing and the circuit board, which exerts a force on the circuit board so that the temperature detection module abuts against the insulating heat-conducting part and the water level detection module abuts against the inner wall of the casing.

[0012] According to some embodiments of the utility model, the circuit board is provided with two unit base shells that are signal-isolated from each other, and the temperature detection module and the water level detection module are correspondingly arranged on the two unit base shells.

[0013] According to some embodiments of the utility model, the temperature detection module comprises a temperature sensor and a temperature signal processing unit, the temperature sensor is used for detecting a temperature analog signal, the temperature signal processing unit is connected with the temperature sensor to process the temperature analog signal to form a temperature detection signal and output, wherein the temperature detection signal is a digital signal or an analog signal after filtering and amplification.

[0014] According to some embodiments of the utility model, the water level detection module comprises a water level sensor and a water level signal processing unit, the water level sensor is used for detecting a water level analog signal, the water level signal processing unit is connected with the water level sensor to process the water level analog signal to form a water level detection signal and output, wherein the water level detection signal is a digital signal or an analog signal after filtering and amplification.

[0015] According to some embodiments of the utility model, the shell comprises a base and an insulating cover, the base and the cover are connected to enclose an inner cavity, the temperature detection module and the water level detection module are arranged in the inner cavity, the insulating heat conduction part is arranged on the cover, and the water level detection module is in contact with the inner wall surface of the cover to form at least partial capacitive water level detection structure.

[0016] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0018] Fig. 1 It is a three-dimensional schematic view of one of the embodiments of the utility model safe isolation water detection device;

[0019] Fig. 2 It is an exploded view of one of the embodiments of the utility model safe isolation water detection device;

[0020] Fig. 3 It is a principle structure block diagram of one of the embodiments of the utility model safe isolation water detection device.

[0021] REFERENCE NUMERALS

[0022] Shell 100;Base 110;Cover 120;Mounting port 130;Assembly part 140;Temperature detection module 200;Temperature sensor 210;Temperature signal processing unit 220;Water level detection module 300;Water level sensor 310;Water level signal processing unit 320;Circuit board 400;Elastic structure 500. DETAILED DESCRIPTION

[0023] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as the limitation of the utility model.

[0024] In the description of the utility model, need understanding, if relate to the direction description, for example the term "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the direction or position relation indicated is based on the direction or position relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0025] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and so on are understood as not including the number, above, below, within and so on are understood as including the number.If there is a description to the first, second is only used for distinguishing the technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] As Figs. 1 to 3 As shown in the first aspect of the utility model, a kind of safe isolation water detection device, including insulated shell 100, temperature detection module 200 and capacitive water level detection module 300, at least part of shell 100 is provided with insulated heat conduction part, temperature detection module 200 is arranged in the shell 100, the temperature detection module 200 is contacted with the insulated heat conduction part to be able to form temperature detection signal, water level detection module 300 is arranged in the shell 100, the water level detection module 300 is contacted with the inner wall surface of the shell 100 to constitute at least part of capacitive water level detection structure, the water level detection module 300 can form water level detection signal.

[0028] The shell 100 can be made of conventional resin, silicone or other materials, and can be in an integrated structure, or in a split structure in some embodiments of the present application, for example, the shell 100 includes a base 110 and an insulating cover 120, the base 110 and the cover 120 are connected to form an inner cavity, the temperature detection module 200 and the water level detection module 300 are arranged in the inner cavity, the insulating heat conducting part is arranged on the cover 120, and the water level detection module 300 is in contact with the inner wall surface of the cover 120 to form at least part of the capacitive water level detection structure.

[0029] Specifically, the shell 100 and the base 110 can be connected by buckling, and the temperature detection module 200 and the water level detection module 300 can output signals to the controller outside through the wires passing through the shell 100.

[0030] It should be noted that the safety isolation water detection device can be applied to a health pot, the health pot usually includes a base and a pot body which can be placed on the base in a detachable manner, the pot body can store water, the base can supply power to a heating element in the pot body to heat the water in the pot body, and the safety isolation water detection device can be arranged on the base, when the pot body is placed on the base, the surface of the cover 120 can abut against the outer side wall of the pot body, the pot body is usually made of glass or resin material, heat can be transmitted to the insulating heat conducting part through the pot body, and the capacitive water level detection structure can also detect the water level in the pot body.

[0031] The safety isolation water detection device of the present application, the temperature detection module 200 and the water level detection module 300 are accommodated in the same insulating shell 100, and the insulating heat conducting part is arranged on the insulating shell 100, the temperature detection module 200 is in contact with the insulating heat conducting part, the heat of the water can be transmitted to the temperature detection module 200 through the insulating heat conducting part, the temperature detection module 200 forms a temperature detection signal, since the shell 100 and the insulating heat conducting part are both insulating, the temperature detection module 200 is not easy to leak electricity outward, and the water level detection module 300 can also be in contact with the inner wall surface of the shell 100 to form at least part of the capacitive water level detection structure, it can be understood that the capacitive water level detection structure is close to the outer wall of the pot body, when the water level in the pot body decreases, the position corresponding to the capacitive water level detection structure in the pot body is exposed to the water surface and contacts the air, the charge amount of the capacitive water level detection structure changes, and the water level detection module can judge and form a water level detection signal, the present application combines water temperature and water level detection functions, is safe and reliable to use, and reduces production cost.

[0032] In some embodiments of the present application, as Fig. 2As shown, the shell 100 is provided with a mounting port 130, the shell 100 is provided with an insulating and heat-conducting fitting 140, the fitting 140 is arranged on the shell 100 and located in the mounting port 130 to form the insulating heat-conducting part.

[0033] The fitting 140 needs to have good heat-conducting performance, while the shell 100 can adopt an insulating but heat-insulating material, so that heat is not easily transmitted to the fitting 140, ensuring that heat is concentratedly transmitted from the fitting 140 to the temperature detection module 200, reducing temperature distortion, and meanwhile, heat is not easily affected to the operation of other components (such as the water level detection module 300).

[0034] Specifically, the fitting 140 is composed of a heat-conducting ceramic material.

[0035] In some embodiments of the utility model, as shown in the figure, Fig. 2 As shown, the shell 100 is provided with a mounting port 130, the shell 100 is provided with an insulating and heat-conducting fitting 140, the fitting 140 is arranged on the shell 100 and located in the mounting port 130 to form the insulating heat-conducting part.

[0036] The temperature detection module 200 and the water level detection module 300 are integrated and placed in the shell 100 by using the circuit board 400, the structure is compact and stable, and the end of the signal transmission lead can be arranged on the circuit board 400.

[0037] The temperature detection module 200 and the water level detection module 300 are arranged at positions of the circuit board 400, and the positions are mutually separated, so that the probability of signal interference is reduced.

[0038] In some embodiments of the utility model, as shown in the figure, Fig. 2 As shown, the shell 100 is provided with a mounting port 130, the shell 100 is provided with an insulating and heat-conducting fitting 140, the fitting 140 is arranged on the shell 100 and located in the mounting port 130 to form the insulating heat-conducting part.

[0039] The elastic structure 500 exerts force on the bottom of the circuit board 400, the circuit board 400 drives the temperature detection module 200 to abut against the insulating heat-conducting part and the water level detection module 300 to abut against the inner wall of the shell 100, so that the insulating heat-conducting part and the temperature detection module 200 are in contact as much as possible without gap, the heat-conducting effect is optimized, and similarly, the water level detection module 300 and the inner wall of the shell 100 are in close contact, the water level detection effect is improved.

[0040] Specifically, the elastic structure 500 can adopt a spring or an elastic rubber column.

[0041] In some embodiments of the present application, the cover 120 is movably arranged on the base 110, when applied to a health-care pot, the outer wall of the pot body can abut against the surface of the cover 120, the cover 120 forms extrusion on the elastic structure 500, and the elastic structure 500 applies force to the cover 120, so that the cover 120 is tightly contacted with the pot body, thereby improving the accuracy of detecting water temperature and water level.

[0042] In some embodiments of the present application, the circuit board 400 is provided with two unit base shells which are signal-isolated with each other, and the temperature detection module 200 and the water level detection module 300 are correspondingly arranged on the two unit base shells.

[0043] The unit base shells can be made of insulating material, one unit base shell supports the temperature detection module 200 arranged on the circuit board 400, and the other unit base shell supports the water level detection module 300 arranged on the circuit board 400, and the two unit base shells are respectively separated from the temperature detection module 200 and the water level detection module 300 to prevent signal interference.

[0044] In some embodiments of the present application, as shown in Fig. 3 The temperature detection module 200 includes a temperature sensor 210 and a temperature signal processing unit 220, the temperature sensor 210 is used for detecting a temperature analog signal, and the temperature signal processing unit 220 is connected with the temperature sensor 210 to process the temperature analog signal to form a temperature detection signal and output, wherein the temperature detection signal is a digital signal or an analog signal after filtering and amplification.

[0045] The temperature sensor 210 can adopt an NTC temperature sensor 210, and the conventional temperature detection module 200 conducts the temperature analog signal detected by the NTC temperature sensor 210 to a control board through a long transmission line for analysis by the control board, but the long transmission line causes signal attenuation and large error.

[0046] The temperature signal processing unit 220 can be an MCU or a CPU processing chip, which is integrated on the circuit board 400, and after real-time analysis and processing of the temperature analog signal detected by the temperature sensor 210, the temperature signal processing unit 220 forms a relatively stable digital signal output, or the temperature signal processing unit 220 performs filtering and amplification processing on the temperature analog signal detected by the temperature sensor 210 to form a relatively stable analog signal for output.

[0047] In some embodiments of the present application, as shown in Fig. 3As shown, the water level detection module 300 comprises a water level sensor 310 for detecting a water level analog signal and a water level signal processing unit 320 connected with the water level sensor 310 to process the water level analog signal into a water level detection signal and output, wherein the water level detection signal is a digital signal or an analog signal after filtering and amplification.

[0048] Similarly, the water level signal processing unit 320 can also be a processing chip such as MCU or CPU, and the temperature signal processing unit 220 and the water level signal processing unit 320 can share one processing chip, and the water level sensor 310 and the temperature sensor 210 can each output signals to the processing chip after being isolated by photoelectric couplers, the water level signal processing unit 320 outputs a relatively stable digital signal after real-time analysis and processing of the water level analog signal detected by the water level sensor 310, or the water level signal processing unit 320 performs filtering and amplification processing on the water level analog signal detected by the water level sensor 310 to form a relatively stable analog signal for output.

[0049] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, the scope of the present application is defined by the claims and their equivalents.

Claims

1. A safety isolation water detecting device, characterized in that, include: An insulated housing, at least a portion of which is provided with an insulating and heat-conducting portion; A temperature detection module is disposed inside the housing, and the temperature detection module is in contact with the insulating and heat-conducting part to generate a temperature detection signal; A capacitive water level detection module is disposed inside the housing. The water level detection module is in contact with the inner wall surface of the housing to form at least a partial capacitive water level detection structure. The water level detection module is capable of generating a water level detection signal.

2. A safety isolating water detecting device according to claim 1, characterized in that: The housing is provided with a mounting port, and the housing is provided with an insulating and thermally conductive fitting, which is disposed on the housing and located at the mounting port to form the insulating and thermally conductive part.

3. A safety isolating water detecting device according to claim 2, characterized in that: The assembly is made of thermally conductive ceramic material.

4. A safety shielded water detecting device as claimed in claim 1, wherein: A circuit board is provided inside the housing, and both the temperature detection module and the water level detection module are disposed on the circuit board and are isolated from each other.

5. A safety isolating water detecting device according to claim 4, characterized in that: The housing has a cavity, the circuit board is disposed in the cavity, and an elastic structure is provided between the inner wall of the housing and the circuit board. The elastic structure applies force to the circuit board so that the temperature detection module abuts against the insulating heat-conducting part and the water level detection module abuts against the inner wall of the housing.

6. A safety shielded water detecting device as claimed in claim 4, wherein: The circuit board is provided with two mutually isolated unit base shells, and the temperature detection module and the water level detection module are respectively arranged on the two unit base shells.

7. A safety isolating water detecting device according to claim 1, characterized in that: The temperature detection module includes a temperature sensor and a temperature signal processing unit. The temperature sensor is used to detect an analog temperature signal. The temperature signal processing unit is connected to the temperature sensor to process the analog temperature signal into a temperature detection signal and output it. The temperature detection signal is a digital signal or an analog signal after filtering and amplification.

8. A safety shielded water detecting device as defined in claim 1, wherein: The water level detection module includes a water level sensor and a water level signal processing unit. The water level sensor is used to detect a water level analog signal. The water level signal processing unit is connected to the water level sensor to process the water level analog signal into a water level detection signal and output it. The water level detection signal is a digital signal or an analog signal after filtering and amplification.

9. A safety shielded water detecting device as defined in claim 1 wherein: The housing includes a base and an insulating cover, the base and the cover being connected to form an inner cavity, the temperature detection module and the water level detection module being disposed in the inner cavity, the insulating heat-conducting part being disposed in the cover, and the water level detection module being in contact with the inner wall surface of the cover to form at least a partial capacitive water level detection structure.

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