Water yield detection device of water purifier and water purifier system

Abstract

The utility model provides a water yield detection device of a water purifier and a water purifier system. The water yield detection device comprises a main control chip, a plug interface, an acquisition circuit and a polarity switching circuit, the plugging port comprises a first contact and a second contact; the first contact and the second contact are respectively used for connecting a first probe conductor at the bottom of the water cup and a third contact penetrating through the bottom of the water cup; wherein a second probe conductor and a probe middle section are further arranged in the water cup, the first probe conductor and the second probe conductor are arranged at the two ends of the probe middle section respectively, and the outer wall face of the probe middle section is wrapped with an insulating layer; an output pin of the main control chip is electrically connected with one end of the polarity switching circuit; the other end of the polarity switching circuit is electrically connected with the first contact of the plugging port; the second contact is electrically connected with the input pin of the main control chip through the acquisition circuit; the main control chip transmits a pulse signal to the polarity switching circuit. The water yield detection device of the water purifier can effectively reduce electrolysis of water, so that scaling of the probe is reduced.

Description

Technical Field

[0001] The utility model relates to the field of intelligent household appliances, and in particular to a water output detection device for a water purifier and a water purifier system. Background Art

[0002] At present, the water output detection device of the water purifier controls the water output of the water purifier in the following way: contacts are respectively set on the bottom of the water cup and the water receiving tray. When the contacts at the bottom of the water cup and the contacts on the bottom of the water receiving tray are connected, the water purifier and the probe set in the water cup form a closed circuit through the contacts. The water purifier can detect whether the height of the water in the water cup has reached the probe position through electrical signals. If not, the water purifier continues to discharge water; if reached, the water purifier stops discharging water. Although this method can control the opening and closing of the water purifier, the water will be electrolyzed in this case, causing scaling of the probe. Therefore, the water output detection device of the water purifier still needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the water output detection device of the water purifier controls the water output of the water purifier in a way that causes water electrolysis and leads to scaling of the probe, and to provide a water output detection device of the water purifier and a water purifier system.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] In a first aspect, a water output detection device for a water purifier is provided, the water output detection device comprising: a main control chip, a plug interface, a collection circuit and a polarity switching circuit;

[0006] The plug port includes a first contact and a second contact; the first contact and the second contact are respectively used to connect a first probe conductor at the bottom of the water cup and a third contact penetrating the bottom of the water cup; wherein a second probe conductor and a probe middle section are also provided in the water cup, the first probe conductor and the second probe conductor are respectively provided at two ends of the probe middle section, and the outer wall surface of the probe middle section is wrapped with an insulating layer;

[0007] The output pin of the main control chip is electrically connected to one end of the polarity switching circuit;

[0008] The other end of the polarity switching circuit is electrically connected to the first contact of the plug interface;

[0009] The second contact is electrically connected to an input pin of the main control chip through the acquisition circuit;

[0010] The main control chip transmits a pulse signal to the polarity switching circuit;

[0011] The polarity switching circuit switches the polarity of the first contact according to the pulse signal;

[0012] The acquisition circuit is used to acquire the potential difference between the first contact and the second contact and send the acquisition potential difference to the main control chip.

[0013] Optionally, the polarity switching circuit includes a first capacitor and a second capacitor;

[0014] One end of the first capacitor is electrically connected to an output pin of the main control chip;

[0015] The other end of the first capacitor is electrically connected to the first contact and one end of the second capacitor respectively;

[0016] The other end of the second capacitor is electrically connected to the input pin of the main control chip through the acquisition circuit;

[0017] The first capacitor and the second capacitor are charged and discharged according to the pulse signal to switch the polarity of the first contact.

[0018] Optionally, the water output detection device further includes a third capacitor;

[0019] Two ends of the third capacitor are electrically connected to the first contact point and the second contact point respectively.

[0020] Optionally, the acquisition circuit includes a rectifier circuit and a filter circuit;

[0021] The rectifier circuit is electrically connected to the input pin of the main control chip through the filter circuit;

[0022] The rectifier circuit is used to rectify the potential difference;

[0023] The filtering subcircuit is used for filtering the rectified potential difference.

[0024] Optionally, the rectifier circuit includes a first diode and a second diode;

[0025] The anode of the first diode is electrically connected to the other end of the second capacitor and the cathode of the second diode respectively;

[0026] The cathode of the first diode is electrically connected to the input pin of the main control chip through the filtering sub-circuit;

[0027] An anode of the second diode is electrically connected to the second contact.

[0028] Optionally, the filtering subcircuit comprises: a first resistor, a second resistor and a fourth capacitor;

[0029] One end of the first resistor is electrically connected to the second contact;

[0030] The other end of the first resistor is electrically connected to the input pin of the main control chip through the second resistor;

[0031] One end of the fourth capacitor is electrically connected to the second contact;

[0032] The other end of the fourth capacitor is electrically connected to the input pin of the main control chip through the second resistor.

[0033] Optionally, the water output detection device further includes a third resistor;

[0034] One end of the third resistor is electrically connected to the output pin of the main control chip;

[0035] The other end of the third resistor is electrically connected to the polarity switching circuit.

[0036] In a second aspect, a water purifier system is provided, the water purifier system comprising a water output detection device of any one of the water purifiers described above.

[0037] Optionally, the water purifier system further includes a water cup carrying device;

[0038] The plug-in interface of the water output detection device is arranged on the water cup supporting device.

[0039] Optionally, the water purifier system further includes a water cup;

[0040] The inner wall surface of the water cup is a conductor, the bottom of the water cup is an insulator, and the third contact in the water output detection device is located at the edge of the bottom and connected to the inner wall surface.

[0041] The positive progressive effect of the utility model is that the polarity switching circuit switches the polarity of the first contact according to the pulse signal, thereby switching the polarity of the first probe conductor and the second probe conductor, which can effectively reduce the electrolysis of water by the water output detection device of the water purifier, thereby reducing probe scaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a module of a water output detection device for a water purifier provided in Embodiment 1 of the present utility model;

[0043] Figure 2 A circuit diagram of a water output detection device for a water purifier provided in Embodiment 1 of the utility model;

[0044] Figure 3 A schematic diagram of a scene in which a water cup is carried on a water cup carrying device provided in Embodiment 1 of the utility model. DETAILED DESCRIPTION

[0045] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0046] Example 1

[0047] In order to solve the defects of probe scaling caused by water electrolysis and the inability of current water purifiers to detect water quality, the utility model provides a water output detection device for a water purifier in Embodiment 1. Figure 1 The module diagram of a water output detection device of a water purifier provided in Example 1 of the utility model includes: a main control chip 11, a polarity switching circuit 12, an insertion interface 13 and a collection circuit 14.

[0048] The plug port 13 includes a first contact and a second contact; the first contact and the second contact are respectively used to connect the first probe conductor at the bottom of the water cup and the third contact that passes through the bottom of the water cup; wherein, a second probe conductor and a probe middle section are also provided in the water cup, the first probe conductor and the second probe conductor are respectively provided at two ends of the probe middle section, and the outer wall surface of the probe middle section is wrapped with an insulating layer.

[0049] The top of the third contact point can be flush with the inner surface of the bottom of the water cup, or can be slightly higher than the inner surface of the bottom of the water cup, and the third contact point can be in contact with the water in the water cup.

[0050] The first probe conductor, the second probe conductor and the middle section of the probe can be integrally formed to form a probe; the first probe conductor, the second probe conductor and the middle section of the probe can also be fixed by welding or other means to form a probe. The middle section of the probe is tightly matched with the insulating layer to prevent water from contacting the middle section of the probe. The insulating layer abuts against the bottom of the water cup. In addition, the first probe conductor is located below the mouth of the water cup, and the height of the first probe conductor from the bottom of the cup matches the expected water output of the water purifier.

[0051] The output pin of the main control chip 11 is electrically connected to one end of the polarity switching circuit 12; the other end of the polarity switching circuit 12 is electrically connected to the first contact of the plug interface 13; the second contact is electrically connected to the input pin of the main control chip 11 through the acquisition circuit 14;

[0052] The main control chip 11 transmits a pulse signal to the polarity switching circuit 12; the polarity switching circuit 12 switches the polarity of the first contact according to the pulse signal; the acquisition circuit 14 is used to collect the potential difference between the first contact and the second contact and send it to the main control chip 11. Preferably, the pulse signal transmitted by the main control chip 11 is a high-frequency pulse signal.

[0053] Since the second probe conductor and water are both conductors, when the water level in the water cup is higher than or equal to the second probe conductor, the circuit mainly composed of the probe, the main control chip, the plug interface, the acquisition circuit and the polarity switching circuit is in a connected state, otherwise the circuit is in an open circuit state. It can be understood that when the circuit is in different states, the potential difference between the first contact and the second contact is different. Therefore, based on the potential difference, it can be determined whether the circuit is in a connected state or an open circuit state. When the water output detection device is in an open circuit state, the potential difference is almost 0, and the acquisition circuit outputs a low level to the input pin of the main control chip. The main control chip determines that the water level in the water cup has not reached the second probe conductor at this time, and then continues to discharge water; when the water output detection device is in a connected state, the potential difference is greater than 0, and the acquisition circuit outputs a high level to the input pin of the main control chip. The main control chip determines that the water level in the water cup has reached the second probe conductor at this time, that is, the water output of the water dispenser reaches the expected water output, and then stops discharging water.

[0054] The water output detection device of this embodiment is suitable for a water cup whose bottom and back are both insulators.

[0055] The water output detection device of this embodiment is also applicable to a water cup whose bottom is an insulator and whose inner wall surface is a conductor. The third contact is located at the bottom edge and connected to the inner wall surface. The inner wall surface of the water cup is a conductor and connected to the third contact, which is equivalent to the third contact and the inner wall surface forming an integral body, which can increase the contact area between the third contact and the water and improve the sensitivity of the circuit conduction.

[0056] It should be noted that the shapes of the first contact, the second contact and the third contact mentioned in this embodiment may not be dot-shaped, but may be at least one of dot-shaped, circular, strip-shaped and polygonal. The shapes of the contacts may be the same or different.

[0057] In this embodiment, the polarity switching circuit 12 switches the polarity of the first contact according to the pulse signal, thereby switching the polarity of the first probe conductor and the second probe conductor, which can effectively reduce the electrolysis of water by the water output detection device of the water purifier, thereby reducing probe scaling. The conductivity of different water qualities is different. When the second probe conductor is immersed in water, the sampling circuit collects the potential difference between the first contact and the second contact and sends it to the main control chip 11. The main control chip 11 can determine whether water is discharged based on the potential difference.

[0058] Furthermore, due to the different conductivity of different water qualities, the main control chip also analyzes the current water quality according to the potential difference corresponding to the different water qualities.

[0059] In one embodiment, see Figure 2The polarity switching circuit includes a first capacitor C1 and a second capacitor C2; one end of the first capacitor C1 is electrically connected to the output pin of the main control chip 11; the other end of the first capacitor C1 is electrically connected to the first contact 131 and one end of the second capacitor C2 respectively; the other end of the second capacitor C2 is electrically connected to the input pin of the main control chip 11 through the acquisition circuit 14; the first capacitor C1 and the second capacitor C2 are charged and discharged according to the pulse signal to switch the polarity of the first contact 131.

[0060] In this embodiment, when the pulse signal is a high level signal, the first capacitor C1 and the second capacitor C2 are in a charging state; when the pulse signal is a low level signal, the first capacitor C1 and the second capacitor C2 are in a discharging state. Therefore, the first capacitor C1 and the second capacitor C2 can switch the polarity of the first contact 131.

[0061] In one embodiment, the water output detection device further includes a third capacitor C3; two ends of the third capacitor C3 are electrically connected to the first contact and the second contact respectively.

[0062] In this embodiment, the two ends of the third capacitor C3 are electrically connected to the first contact and the second contact respectively, so that the plug interface can resist high-frequency interference, thereby making the potential difference collected by the collection circuit more accurate.

[0063] In one embodiment, the acquisition circuit includes a rectifier circuit and a filter subcircuit; the rectifier circuit is electrically connected to the input pin of the main control chip through the filter subcircuit; the rectifier circuit is used to rectify the potential difference; and the filter subcircuit is used to filter the potential difference.

[0064] In this embodiment, the rectifier circuit converts the potential difference into a constant voltage for the main control chip to read after rectification, so that the main control chip can read the data more accurately. After the filter subcircuit filters the potential difference, the noise in the potential difference signal can be effectively removed, so that the transmission of the potential difference signal is more stable, and the main control chip can read the data more accurately. Among them, the filtering processing method includes at least one of capacitor filtering, inductor filtering, RC filtering, LC filtering, and digital filtering.

[0065] In one embodiment, the rectifier circuit includes a first diode D1 and a second diode D2; the anode of the first diode D1 is electrically connected to the other end of the second capacitor and the cathode of the second diode D2 respectively; the cathode of the first diode D1 is electrically connected to the input pin of the main control chip through the acquisition circuit; the anode of the second diode D2 is electrically connected to the second contact.

[0066] In this embodiment, the first diode D1 and the second diode D2 are used to rectify the potential difference, so that the AC signal of the potential difference can be converted into a DC signal. The DC signal is more stable than the AC signal, so that the main control chip can better read the potential difference.

[0067] In one embodiment, the filtering subcircuit includes: a first resistor R1, a second resistor R2 and a fourth capacitor C4; one end of the first resistor R1 is electrically connected to the second contact; the other end of the first resistor R1 is electrically connected to the input pin of the main control chip through the second resistor R2; one end of the fourth capacitor C4 is electrically connected to the second contact; the other end of the fourth capacitor C4 is electrically connected to the input pin of the main control chip through the second resistor R2.

[0068] In this embodiment, the first resistor R1, the second resistor R2 and the fourth capacitor C4 are used to filter the potential difference, which can effectively remove noise in the potential difference signal, make the transmission of the potential difference signal more stable, and enable the main control chip to read the potential difference more accurately.

[0069] In one embodiment, the water output detection device also includes a third resistor; one end of the third resistor is electrically connected to the output pin of the main control chip; and the other end of the third resistor is electrically connected to the polarity switching circuit.

[0070] In this embodiment, a third resistor is provided between the main control chip and the polarity switching circuit, which can reduce the impedance of the pulse signal output by the main control chip during the transmission process and ensure that the pulse signal is effectively transmitted in the entire circuit.

[0071] Combine the following Figure 2 The working process of the water output detection device of the water purifier is further described. When the water cup receives water, the first probe conductor and the third contact at the bottom of the water cup are respectively connected to the first contact and the second contact of the plug interface.

[0072] S1: The output pin of the main control chip 11 outputs a high-frequency pulse signal to the entire circuit through the third resistor R3;

[0073] S2: The first capacitor C1 and the second capacitor C2 of the polarity switching circuit 12 are charged or discharged according to the high-frequency pulse signal to switch the polarity of the first contact 131 of the plug interface 13 .

[0074] In this embodiment, when the high-frequency pulse signal is a high-level signal, the first capacitor C1 and the second capacitor C2 are in a charging state; when the high-frequency pulse signal is a low-level signal 131, the first capacitor C1 and the second capacitor C2 are in a discharging state. Therefore, the first capacitor and the second capacitor can switch the polarity of the first contact 131.

[0075] S3: The acquisition circuit 14 rectifies the potential difference of the plug interface 13 collected by the first diode D1 and the second diode D2, and filters the potential difference using the first resistor R1, the second resistor R2 and the fourth capacitor C4, and then sends it to the main control chip 11, so that the main control chip can determine whether water is flowing out.

[0076] In one embodiment, in combination Figure 3 How the water output detection device of the water purifier detects the water output is further explained.

[0077] Figure 3 Contacts A and B shown in the figure represent first contacts of the plug interface, and contacts C and D represent second contacts of the plug interface, wherein contacts A and B are used to detect whether the water cup 31 is normally placed on the water cup supporting device 33; contacts C and D are used to detect whether the height of the water in the water cup 31 reaches the second probe conductor 32.

[0078] Step 1: Determine whether the water cup is placed on the water cup carrier 33. When the first probe conductor of the water cup 31 is invalidly connected to the contact A and the contact B, the water output detection device of the water purifier is in an open circuit state. At this time, it is considered that the water cup is not placed on the water cup carrier 33, and no water is discharged; the user is reminded to place the water cup 31 correctly. When the first probe conductor of the water cup 31 is effectively connected to the contact A and the contact B, the water output detection device of the water purifier is in a short circuit state. At this time, it is considered that the water cup is placed on the water cup carrier 33, and Step 2 is performed.

[0079] Step 2: Determine whether the height of the water in the cup reaches the second probe conductor 32. When the contact C and the contact D do not receive the electrical signal of the second probe conductor 32, the water output detection device of the water purifier considers that the height of the water in the cup does not reach the second probe conductor 32, and the water output is started. When the contact C and the contact D receive the electrical signal of the second probe conductor, the water output detection device of the water purifier considers that the height of the water in the cup has reached the second probe conductor 32, and the water output is stopped.

[0080] Example 2

[0081] Embodiment 2 of the present invention provides a water purifier system, which includes the water output detection device of the water purifier described in Embodiment 1.

[0082] In this embodiment, the water output detection device is used on the water purifier system, which can effectively reduce the electrolysis of water by the water purifier system, thereby reducing the scaling of the probe. The water purifier system can also detect the water output, and further, the water purifier system can analyze the current water quality according to the potential difference corresponding to different water qualities.

[0083] In one embodiment, the water purifier system further includes a water cup carrying device; the plug-in interface in the water output detection device is arranged on the water cup carrying device.

[0084] In this embodiment, providing the plug interface on the water cup supporting device can enable the first contact and the second contact of the plug interface to be better connected with the first probe conductor at the bottom of the water cup and the third contact passing through the bottom of the water cup, thereby enabling the collection circuit in the water output detection device to collect the first contact and the second contact more accurately.

[0085] In one embodiment, the water purifier system also includes a water cup; the inner wall surface of the water cup is a conductor, the bottom of the water cup is an insulator, and the third contact of the water output detection device is located at the bottom edge of the water cup and connected to the inner wall surface.

[0086] In this embodiment, the inner wall of the water cup is a conductor, the bottom of the water cup is an insulator, and the third contact is located at the bottom edge and connected to the inner wall. The inner wall of the water cup is a conductor and connected to the third contact, which is equivalent to the third contact and the inner wall forming an integral body, which can increase the contact area between the third contact and the water and improve the sensitivity of the circuit conduction.

[0087] It should be noted that the present invention does not involve improvements in detecting water output according to a water output detection device of a water purifier, nor does it involve improvements in generating adjustment instructions by a controller. For specific implementation methods, please refer to the relevant technical description.

[0088] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A water output detection device for a water purifier, characterized in that: The water output detection device includes: a main control chip, a plug interface, a collection circuit and a polarity switching circuit; The plug port includes a first contact and a second contact; the first contact and the second contact are respectively used to connect a first probe conductor at the bottom of the water cup and a third contact penetrating the bottom of the water cup; wherein a second probe conductor and a probe middle section are also provided in the water cup, the first probe conductor and the second probe conductor are respectively provided at two ends of the probe middle section, and the outer wall surface of the probe middle section is wrapped with an insulating layer; The output pin of the main control chip is electrically connected to one end of the polarity switching circuit; The other end of the polarity switching circuit is electrically connected to the first contact of the plug interface; The second contact is electrically connected to an input pin of the main control chip through the acquisition circuit; The main control chip transmits a pulse signal to the polarity switching circuit; The polarity switching circuit switches the polarity of the first contact according to the pulse signal; The acquisition circuit is used to acquire the potential difference between the first contact and the second contact and send the acquisition potential difference to the main control chip.

2. The water output detection device according to claim 1, characterized in that: The polarity switching circuit includes a first capacitor and a second capacitor; One end of the first capacitor is electrically connected to an output pin of the main control chip; The other end of the first capacitor is electrically connected to the first contact and one end of the second capacitor respectively; The other end of the second capacitor is electrically connected to the input pin of the main control chip through the acquisition circuit; The first capacitor and the second capacitor are charged and discharged according to the pulse signal to switch the polarity of the first contact.

3. The water output detection device according to claim 1, characterized in that: The water output detection device also includes a third capacitor; Two ends of the third capacitor are electrically connected to the first contact point and the second contact point respectively.

4. The water output detection device according to claim 2, characterized in that: The acquisition circuit includes a rectifier circuit and a filter circuit; The rectifier circuit is electrically connected to the input pin of the main control chip through the filter circuit; The rectifier circuit is used to rectify the potential difference; The filtering subcircuit is used for filtering the rectified potential difference.

5. The water output detection device according to claim 4, characterized in that: The rectifier circuit includes a first diode and a second diode; The anode of the first diode is electrically connected to the other end of the second capacitor and the cathode of the second diode respectively; The cathode of the first diode is electrically connected to the input pin of the main control chip through the filtering sub-circuit; An anode of the second diode is electrically connected to the second contact.

6. The water output detection device according to claim 4, characterized in that: The filtering subcircuit comprises: a first resistor, a second resistor and a fourth capacitor; One end of the first resistor is electrically connected to the second contact; The other end of the first resistor is electrically connected to the input pin of the main control chip through the second resistor; One end of the fourth capacitor is electrically connected to the second contact; The other end of the fourth capacitor is electrically connected to the input pin of the main control chip through the second resistor.

7. The water output detection device according to claim 1, characterized in that: The water output detection device also includes a third resistor; One end of the third resistor is electrically connected to the output pin of the main control chip; The other end of the third resistor is electrically connected to the polarity switching circuit.

8. A water purifier system, characterized in that: The water purifier system comprises the water output detection device of the water purifier according to any one of claims 1-7.

9. The water purifier system according to claim 8, characterized in that: The water purifier system also includes a water cup carrying device; The plug-in interface of the water output detection device is arranged on the water cup supporting device.

10. The water purifier system according to claim 8, characterized in that: The water purifier system also includes a water cup; The inner wall surface of the water cup is a conductor, the bottom of the water cup is an insulator, and the third contact in the water output detection device is located at the bottom edge and connected to the inner wall surface.

Images