Sensor module and household appliance

Abstract

The utility model discloses a sensor module and a household electrical appliance. The sensor module comprises a sensor shell, a temperature sensor, a water level sensor and a signal processor, the temperature sensor and the water level sensor are installed in the sensor shell, and the signal processor is used for conducting analog-digital conversion on detection signals output by the temperature sensor and the water level sensor and then outputting the detection signals. The temperature sensor and the water level sensor are integrated on one structure, meanwhile, detection signals output by the temperature sensor and the water level sensor are converted into digital signals through the signal processor, signal transmission can be completed only through one signal line, the number of signal transmission lines is reduced, the assembly structure is optimized, and the cost is reduced. The assembly difficulty is reduced; in addition, the sensor module transmits a signal to the controller through a digital signal, and the transmission of the digital signal has strong adaptability to poor contact and lead interference at a part connecting part, so that the stability of signal transmission is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field especially, relate to a sensor module and domestic appliance. BACKGROUND

[0002] Some existing domestic appliances, for example, humidifier, vacuum cup, milk frother, electric rice cooker, water dispenser, water heater, washing machine, sweeper, air conditioner, coffee machine or sterilizer etc., generally need to detect the liquid temperature and liquid level inside the container, and the controller of the domestic appliance carries out subsequent corresponding control according to the detection result. In the prior art, in order to realize the detection of liquid temperature and liquid level, it is generally necessary to install temperature sensor and water level sensor respectively, and 2 or more signal lines are needed between the temperature sensor and the water level sensor and the controller for signal transmission, so the assembly structure is complex and the assembly difficulty is great. Moreover, the temperature sensor and the water level sensor use voltage / resistance type analog signals to communicate with the controller, and the signal transmission is easily affected by poor contact at the component connection and lead interference, thereby causing inaccurate detection or false triggering and other problems. SUMMARY

[0003] The technical problem to be solved by the utility model lies in providing a sensor module and domestic appliance, which can optimize the assembly structure of the product, reduce the assembly difficulty, and improve the stability of the detection signal transmission.

[0004] To solve the above technical problems, the utility model adopts the technical scheme as follows:

[0005] A sensor module comprises a sensor shell, a temperature sensor, a water level sensor and a signal processor, the temperature sensor and the water level sensor are respectively installed in the sensor shell, the temperature sensor and the water level sensor are respectively connected in communication with the signal processor, and the signal processor is used for outputting the detection signal output by the temperature sensor and the water level sensor after analog-digital conversion.

[0006] Preferably, the connection line outside the signal processor and the temperature sensor and the water level sensor is covered with an anti-interference sleeve.

[0007] Preferably, the sensor shell is filled with an insulating filler.

[0008] Preferably, the temperature sensor adopts an NTC temperature sensor.

[0009] Preferably, the water level sensor adopts an inductive water level sensor.

[0010] Preferably, the material of the sensor shell is plastic, hardware, glass or silica gel.

[0011] Preferably, the sensor housing is provided with a probe shaft for extending into the liquid, and the temperature sensor and water level sensor are fitted and installed on the inner side of the end of the probe shaft.

[0012] Preferably, a silicone sleeve is fitted on the outer side of the probe shaft, and an annular groove is provided on the outer side of the silicone sleeve.

[0013] A household appliance includes a container for holding liquid, the bottom of which is equipped with the sensor module described above.

[0014] Preferably, the household appliance is a humidifier, thermos cup, milk frother, rice cooker, water dispenser, water heater, washing machine, robot vacuum cleaner, air conditioner, coffee machine, or sterilizer.

[0015] The beneficial technical effects of this utility model are as follows: The aforementioned sensor module integrates the temperature sensor and the water level sensor into one structure, eliminating the need for separate installation of the temperature sensor and the water level sensor during assembly. Furthermore, the signal processor converts the detection signals output by the temperature sensor and the water level sensor into digital signals, requiring only one signal line for signal transmission, thus reducing the number of signal transmission lines, optimizing the assembly structure, and lowering assembly difficulty. In addition, the sensor module uses digital signals to transmit signals to the controller, which is more adaptable to poor contact at component joints and interference from lead wires, thereby improving the stability of signal transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly structure of the household appliance and sensor module of this utility model;

[0017] Figure 2 This is a schematic diagram of the sensor module of this utility model;

[0018] Figure 3 This is a cross-sectional view of the sensor module of this utility model. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] This utility model provides a household appliance. For example... Figure 1 As shown, in one embodiment of this utility model, the household appliance includes a container 200 for holding liquid 201, and a sensor module 100 is installed at the bottom of the container 200. The household appliance is a humidifier, thermos cup, milk frother, rice cooker, water dispenser, water heater, washing machine, robot vacuum cleaner, air conditioner, coffee machine, sterilizer, or other household appliances.

[0021] As Figures 2-3 shown, the sensor module 100 comprises a sensor shell 10, a temperature sensor 20, a water level sensor 30 and a signal processor 40, the temperature sensor 20 and the water level sensor 30 are respectively installed in the sensor shell 10, the temperature sensor 20 and the water level sensor 30 are respectively connected with the signal processor 40, and the signal processor 40 is used for converting the detection signals output by the temperature sensor 20 and the water level sensor 30 into digital signals and transmitting the temperature detection result and the water level detection result to the controller in the form of digital signals.

[0022] The sensor shell 10 can be made of plastic, hardware, glass or silica gel. The temperature sensor 20 can be an NTC temperature sensor or other types of temperature sensors. The water level sensor 30 is an inductive water level sensor, such as an ultrasonic water level sensor.

[0023] The connection line of the signal processor 40 and the temperature sensor 20 and the water level sensor 30 is covered with an anti-interference sleeve 50. The sensor shell 10 is filled with an insulating filler 70 to achieve insulation and isolation protection between the temperature sensor 20 and the water level sensor 30.

[0024] The sensor shell 10 is provided with a detection shaft 11 for extending into the liquid, and the temperature sensor 20 and the water level sensor 30 are attached to the inner side of the end of the detection shaft 11. The detection shaft 11 is provided with a silica gel sleeve 60, and the silica gel sleeve 60 is provided with an annular groove 61. When assembling, first install the silica gel sleeve 60 in the mounting hole at the bottom of the container 200, and the edge of the mounting hole at the bottom of the container 200 is clamped into the annular groove 61 of the silica gel sleeve 60 to achieve the installation of the silica gel sleeve 60, and then the detection shaft 11 of the sensor shell 10 is inserted into the silica gel sleeve 60 to achieve the installation of the sensor module 100 through interference fit, which is simple and convenient to assemble.

[0025] The beneficial technical effects of the utility model lie in:

[0026] The sensor module of the utility model integrates the temperature sensor and the water level sensor in one structure, and does not need to install the temperature sensor and the water level sensor respectively during assembly. Meanwhile, the signal processor is used to convert the detection signals output by the temperature sensor and the water level sensor into digital signals, and only one signal line is needed to complete signal transmission, which reduces the number of signal transmission lines, optimizes the assembly structure and reduces the assembly difficulty. In addition, the sensor module uses digital signal transmission to transmit signals to the controller of the household appliance, and the digital signal transmission has strong adaptability to poor contact and lead interference at the component connection, thereby improving the stability of signal transmission.

[0027] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Those skilled in the art can make various equivalent changes and improvements on the basis of the above-described embodiments, and any equivalent changes or modifications made within the scope of claims shall fall within the protection scope of the present application.

Claims

1. A sensor module, characterized by: The sensor module comprises a sensor shell, a temperature sensor, a water level sensor and a signal processor, the temperature sensor and the water level sensor are respectively installed in the sensor shell, the temperature sensor and the water level sensor are respectively in communication connection with the signal processor, and the signal processor is used for outputting the detection signals output by the temperature sensor and the water level sensor to a controller of a household appliance after analog-digital conversion through a signal line. The sensor shell is provided with a detection shaft used for extending into liquid, the temperature sensor and the water level sensor are attached to the inner side of the end of the detection shaft, a silica gel sleeve is sleeved outside the detection shaft, and an annular groove is arranged outside the silica gel sleeve.

2. The sensor module of claim 1, wherein: The connection lines of the signal processor, the temperature sensor and the water level sensor are covered with anti-interference line sleeves.

3. The sensor module of claim 1, wherein: The sensor shell is filled with insulating filler.

4. The sensor module of claim 1, wherein: The temperature sensor is an NTC temperature sensor.

5. The sensor module of claim 1, wherein: The water level sensor is an inductive water level sensor.

6. The sensor module of claim 1, wherein: The material of the sensor shell is plastic, hardware, glass or silica gel.

7. A domestic appliance comprising a container for containing a liquid, characterised in that: The bottom of the container is provided with the sensor module as claimed in any one of claims 1-6.

8. The appliance of claim 7, characterized in that: The household appliance is a humidifier, a thermal cup, a milk frother, an electric rice cooker, a water dispenser, a water heater, a washing machine, a sweeper, an air conditioner, a coffee machine or a sterilizer.

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