Humidity sensor for washing and drying all-in-one machine and washing and drying all-in-one machine

Abstract

A humidity sensor for a washing and drying all-in-one machine and the washing and drying all-in-one machine are characterized in that the humidity sensor comprises a contact module capable of achieving capacitive sensing, and one end of the contact module abuts against the outer side face wall of a glass door of the washing and drying all-in-one machine; and the control module is used for realizing acquisition and analysis of capacitance data, and the control module is electrically connected with the other end of the contact module. The utility model has the advantages that the capacitive humidity sensor is arranged on the outer side of the glass door, so that the sensor can be effectively prevented from being influenced by a humid washing environment or interfered by clothes beating to reduce the accuracy of detection data, and the use reliability of the sensor is ensured; the drying data of the clothes in the inner cylinder can be better detected without damaging the structure of the inner cylinder, the inner cylinder does not need to be transformed or an additional structure does not need to be arranged, installation is simpler and more convenient, and the drying device is suitable for various washing and drying all-in-one machines.

Description

Technical Field

[0001] The utility model relates to a sensor device, in particular to a humidity sensor for a washer-dryer and the washer-dryer. Background Art

[0002] The drying effect of a washer-dryer is one of the important indicators for judging the performance of the equipment. Due to the application environment, a washer-dryer needs to take into account both washing and drying functions at the same time. Therefore, a washer-dryer is different from a single-function dryer structure. It is usually impossible to directly install a suitable humidity sensor in the inner drum to judge drying like an ordinary dryer.

[0003] At present, mainstream manufacturers usually use temperature sensors or weighing to judge whether the drying process is dry, such as the Chinese invention application with application number 202211527864.X "A control method, washing machine and medium for improving the accuracy of drying judgment", and the Chinese invention patent application with application number 202110252144.6 "Clothing drying method, clothing processing device and storage medium".

[0004] In the above patents, the temperature dryness judgment method usually sets a temperature sensor at the outlet or at the inlet and outlet, and detects the temperature of the air outlet or the temperature difference between the air outlet and the air inlet. When the temperature or the temperature difference reaches the set threshold, it is judged to be dry; however, this drying method often has the following problems: 1. Small-mass clothes are over-dried, and large-mass clothes are not dried; 2. Regardless of the amount of clothes to be dried, the ambient temperature, and the changes in the working conditions of the compressor and the fan, the same dryness judgment temperature or temperature difference threshold is used, which leads to misjudgment.

[0005] In addition, the weighing method for judging dryness usually measures the weight of the clothes in the inner drum to determine whether the moisture has been dried. However, due to various environmental factors, the weighing error is usually around 0.5kg, which also leads to insufficient measurement accuracy.

[0006] Therefore, in summary, the drying test method currently used by the washer-dryer still has the above-mentioned problems and needs to be further improved and perfected. Utility Model Content

[0007] The first technical problem to be solved by the present invention is to provide a humidity sensor device for a washer-dryer with a simple and reasonable installation structure and more accurate measurement results in response to the above-mentioned existing technical status.

[0008] The second technical problem to be solved by the present invention is to provide a washer-dryer that adopts the above-mentioned humidity sensor device to realize drying detection in response to the above-mentioned existing technical status.

[0009] The technical solution adopted by the present utility model to solve the above first technical problem is as follows: A humidity sensor for a washing and drying integrated machine, characterized in that: the humidity sensor includes

[0010] a contact module, which can realize capacitance induction, and one end of the contact module is tightly abutted against the outer side wall of the glass door of the washing and drying integrated machine;

[0011] a control module, which is used to collect and analyze capacitance data, and the control module is electrically connected to the other end of the contact module.

[0012] For the convenience of installation and data detection, preferably, the contact module is a spring, and the control module is installed on a substrate; one end of the spring abuts against the outer side wall of the glass door, and the other end of the spring is fixedly connected to the substrate. A panel is also arranged on the outer side of the glass door. The substrate passes through a bracket fixed to the inner side of the panel to closely attach one end of the spring to the outer side wall of the glass door.

[0013] For the convenience of assembly and saving installation time, as one of the preferences, the bracket can be integrally formed with the panel, so that the bracket does not need to be installed separately and can directly abut against the substrate as a support member and a limiting member.

[0014] For the convenience of replacing accessories, as another preference, the bracket and the panel can also be made into a detachable connection. Columns are arranged on the inner side of the panel, and threaded holes are opened in the columns. The bracket is connected to the threaded holes through fasteners. If the bracket is damaged, the accessories can be replaced separately without replacing the panel together, which can save costs.

[0015] As still another preference, considering the reasons of some panel materials, it is not suitable to open holes on the panel. The installation can be realized by extrusion, that is, the bracket is an elastic bracket. One end of the bracket is tightly abutted against the inner side wall of the panel, and the other end of the bracket is tightly abutted against the outer side of the substrate, and one end of the spring has a tendency to always closely adhere to the outer side wall of the glass door. Thus, through a tight fit method, the bracket together with the spring is compressed, so that the spring can always closely adhere to the outer side wall of the glass door without opening holes or setting installation structures on the panel.

[0016] For the reliability and safety of installation, preferably, the control module includes a control circuit mounted on the substrate, and the signal input end of the control circuit is electrically connected to the other end of the spring.

[0017] Preferably, the connection between the other end of the spring and the signal input end of the control circuit can be a contact electrical connection, and the two are electrically connected through contact, similar to a touch button.

[0018] As another preference, in order to improve the stability and reliability of signal transmission, the other end of the spring is also electrically connected to the signal input end of the control circuit through a wire. The wire connection can ensure a reliable electrical connection at all times, making the signal transmission more stable and reliable.

[0019] To improve the accuracy of detection and measurement precision, as a preference, there are three humidity sensors, and the three are circumferentially spaced apart along the lower edge of the outer side wall of the glass door. Considering that when the inner drum is working, the actual distribution position of the clothes in the inner drum is mainly located in the circumferential part below the glass door, setting the humidity sensors at this position can ensure better detection of the actual drying data of the clothes, ensuring the accuracy of detection. Moreover, the distribution method of the three humidity sensors can improve the comprehensiveness of the collected data, reduce measurement deviation, and further improve the detection precision and accuracy.

[0020] The technical solution adopted by the present utility model to solve the above-mentioned second technical problem is: a washing and drying integrated machine, including a rotatable inner drum and an openable and closable glass door, characterized in that: a humidity sensor capable of detecting the humidity of the inner drum as described above is provided on the outer side wall surface of the glass door.

[0021] Compared with the prior art, the advantages of the present utility model are as follows: Different from the traditional method of setting a temperature sensor in the inner drum to judge dryness or weighing to judge dryness, in this application, a capacitive humidity sensor is installed on the outer side of the glass door. On the one hand, the sensor itself is not in direct contact with the clothes in the inner drum, which can effectively prevent the sensor from being affected by the humid washing environment or the interference of the clothes being tossed, and reduce the accuracy of the detection data, ensuring the reliability of the sensor use; on the other hand, the capacitive humidity sensor can better detect the drying data of the clothes in the inner drum without damaging the inner drum structure, without the need to transform the inner drum or set additional structures, and the installation is simpler and more convenient, and it can be applied to various existing washing and drying integrated machines, with strong practicability. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram (including the panel) of the glass door of the washing and drying integrated machine for the embodiment of the present utility model.

[0023] Figure 2 It is a schematic installation diagram of the humidity sensor on the glass door for the embodiment of the present utility model.

[0024] Figure 3 For Figure 2 It is a cross-sectional view of the glass door structure installed with the humidity sensor as shown. Detailed Embodiments

[0025] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0026] like Figures 1 to 3 As shown, this embodiment discloses a washer-dryer, which includes a rotatable inner drum and an openable and closable glass door 1, on which a panel 2 is mounted. Figure 1 .

[0027] A washer-dryer usually has the dual functions of washing and drying. In order to better control the drying temperature, a sensor for detecting the drying temperature is usually installed on the washer-dryer.

[0028] In this embodiment, a capacitive humidity sensor that can detect the humidity of the inner drum is arranged on the outer wall of the glass door 1. The humidity sensor includes two parts: one part is a contact module that can realize capacitive sensing, and the other part is a control module for realizing the collection and analysis of capacitive data; wherein, one end of the contact module is tightly against the outer side wall of the glass door 1 of the washer-dryer, and the other end of the contact module is electrically connected to the control module.

[0029] The contact module that can realize capacitive sensing is usually made of conductive materials. In order to facilitate installation and improve the detection accuracy, a spring 3 is selected as the contact module in this embodiment. The control module usually includes a control circuit. In order to facilitate installation and improve the safety of use, the control circuit in the control module is mounted on a substrate 4 in this embodiment. The shape of the substrate 4 can be set to a square or circular or other shape according to the installation space. Therefore, one end of the spring 3 is against the outer wall of the glass door 1, and the other end of the spring 3 is electrically connected to the signal input end of the control circuit.

[0030] Taking into account the diversity of connection methods, the other end of the spring 3 and the signal input end of the control circuit can be electrically connected in a contact manner (similar to a contact switch); in order to improve the stability and reliability of signal transmission, the other end of the spring 3 and the signal input end of the control circuit are also electrically connected through a wire. The wire connection can ensure a reliable electrical connection at all times, and the signal transmission is more stable and reliable.

[0031] In order to ensure that one end of the spring 3 can always be in close contact with the outer side of the glass door 1, a panel 2 is further provided on the outer side of the glass door 1, and a base plate 4 is fixed to a bracket (not shown) on the inner side of the panel 2 to keep one end of the spring 3 in close contact with the outer wall of the glass door 1.

[0032] In order to facilitate assembly and save installation time, the bracket can be formed into an integral body with the panel 2, so the bracket does not need to be installed separately, and can directly serve as a support and a limiter to abut against the base plate 4.

[0033] In order to facilitate the replacement of accessories, the bracket and the panel 2 can also be made into a detachable connection, and a column (similar to Figure 2The convex column 5) therein has a threaded hole opened inside the column, and the bracket is connected to the threaded hole through a fastener. If the bracket is damaged, the bracket fittings can be replaced separately without replacing the panel 2 together, which can save costs.

[0034] Considering that the material of the panel 2 mostly uses transparent glass and it is not suitable to drill holes in the panel 2, the bracket can also be made into an elastically extrudable and deformable component. One end of the bracket abuts tightly against the inner side wall of the panel 2, and the other end of the bracket abuts tightly against the outer side of the substrate 4, and one end of the spring 3 has a tendency to always closely adhere to the outer side wall surface of the glass door 1. In this way, both the bracket and the spring 3 are in a tightly fitting connection mode, and the bracket together with the spring 3 is compressed between the panel 2 and the outer side wall surface of the glass door 1, so that the spring 3 can always closely adhere to the outer side wall surface of the glass door 1 without opening holes in the panel 2 or setting up additional bracket installation structures.

[0035] Considering the movement trajectory of the clothes in the inner drum when the washing and drying integrated machine is working, the closer to the lower edge of the glass door 1, the greater the probability of contacting different clothes each time, and the closer to the center of the glass door 1, the smaller the probability of contacting the clothes. If the amount of clothes is small, it may not even be contacted. Therefore, in order to improve the detection accuracy and measurement precision, three humidity sensors are provided in this embodiment, and the three humidity sensors are respectively distributed at intervals along the circumference of the lower edge of the outer side wall surface of the glass door 1, so that the humidity condition of the clothes can be characterized to the greatest extent, the drying data of the clothes in the inner drum can be obtained more comprehensively, the comprehensiveness of data collection can be improved, and the detection accuracy and accuracy can be ensured.

[0036] As Figure 2 shown, the number of humidity sensors is not limited to one or three, and an appropriate number of sensors can be arranged along the circumference of the lower edge of the outer side wall surface of the glass door 1 according to the actual situation.

[0037] In the description and claims of the present utility model, terms indicating directions such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc. are used to describe various example structural parts and elements of the present utility model. However, these terms are used here only for the convenience of description and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed by the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A humidity sensor for a washer-dryer, characterized in that: The humidity sensor comprises A contact module can realize capacitive sensing, one end of the contact module is tightly abutted against the outer side wall of the glass door (1) of the washer-dryer; The control module is used to collect and analyze capacitance data, and the control module is electrically connected to the other end of the contact module.

2. The humidity sensor for a washer-dryer according to claim 1, characterized in that: The contact module is a spring (3), and the control module is mounted on a substrate (4); one end of the spring (3) is in contact with the outer wall of the glass door (1), and the other end of the spring (3) is fixedly connected to the substrate (4); a panel (2) is also provided on the outer side of the glass door (1), and the substrate (4) holds one end of the spring (3) in close contact with the outer wall of the glass door (1) via a bracket fixed to the inner side of the panel (2).

3. The humidity sensor for a washer-dryer according to claim 2, characterized in that: The bracket and the panel (2) are integrally formed.

4. The humidity sensor for a washer-dryer according to claim 2, characterized in that: A column is arranged on the inner side of the panel (2), a threaded hole is provided in the column, and the bracket is connected to the threaded hole via a fastener.

5. The humidity sensor for a washer-dryer according to claim 2, characterized in that: The bracket is an elastic bracket, one end of which is in close contact with the inner wall of the panel (2), and the other end of which is in close contact with the outer side of the base plate (4), so that one end of the spring (3) has a tendency to always be in close contact with the outer wall of the glass door (1).

6. The humidity sensor for a washer-dryer according to claim 2, characterized in that: The control module comprises a control circuit mounted on the substrate (4), and a signal input end of the control circuit is electrically connected to the other end of the spring (3).

7. The humidity sensor for a washer-dryer according to claim 6, characterized in that: The other end of the spring (3) is electrically connected to the signal input end of the control circuit in a contact manner.

8. The humidity sensor for a washer-dryer according to claim 6, characterized in that: The other end of the spring (3) is electrically connected to the signal input end of the control circuit via a wire.

9. The humidity sensor for a washer-dryer according to claim 1, characterized in that: The humidity sensors include three, and the three are distributed at intervals along the circumference of the lower edge of the outer wall surface of the glass door (1).

10. A washer-dryer comprising a rotatable inner drum and an openable and closable glass door (1), characterized in that: A humidity sensor for a washer-dryer as claimed in any one of claims 1 to 9 is arranged on the outer wall surface of the glass door (1), and the humidity sensor can detect the humidity of the inner drum.

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