Water flow detection fault alarm device and dish washing machine

Abstract

A water flow detection fault alarm device and a dishwasher belong to the technical field of dishwashers. The water flow detection fault alarm device comprises a PCB, a power supply module, a standby power supply module, a main control chip module, a WIFI communication module and a water flow detection module, and the power supply module and the standby power supply module are switched to supply power, so that the water flow detection monitors the water flow state of a water inlet pipe in real time except the water inlet stage of the dish-washing machine; the PCB is provided with a WIFI communication module and uploads the abnormal state of water flow of the water inlet pipe to a cloud end through the WIFI communication module, the PCB is further provided with a connecting terminal electrically connected with the PCB and is connected with the dish-washing machine main control board through the connecting terminal, and the dish-washing machine main control board is used for providing a power source and charging the standby power source and is in communication connection with the main control chip module. By adopting dual-power control, uninterrupted water flow detection of the water inlet pipe of the dish-washing machine is realized except normal water inlet; and when the water flow is abnormal, the abnormal state is sent to a user mobile phone terminal for prompting in a wireless mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of dishwashers, and in particular relates to a water flow detection fault alarm device and a dishwasher. Background Art

[0002] At present, dishwasher water inlet control is mostly controlled by normally closed solenoid valves, which are powered on to open and powered off to close. When water is needed, the water inlet solenoid valve is opened and the water inlet volume is detected by a flow meter; when the water inlet volume reaches the set water volume, the dishwasher main control board will power off the water inlet solenoid valve through feedback to close the water inlet.

[0003] When the flow meter fails and the actual water inflow is seriously inconsistent with the set water inflow, or the water inlet solenoid valve keeps leaking and cannot be effectively monitored, the water inside the dishwasher will accumulate more and more; at this time, if the dishwasher is powered on, the water will flow out and an alarm will be sounded and the water will be drained. If the dishwasher is not powered on, the final protection cannot be performed, and the user's home will be flooded, causing serious consequences.

[0004] Therefore, it is necessary to propose a new solution to solve the above problems. Summary of the invention

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a water flow detection fault alarm device and a dishwasher.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions: a water flow detection fault alarm device is installed on the water inlet pipe of the dishwasher, and a water inlet solenoid valve is installed on the water inlet pipe, including a PCB board, and a power module, a backup power module, a main control chip module, a WIFI communication module and a water flow detection module installed on the PCB board and electrically connected to the PCB board. The power module and the backup power module switch power supply so that the water flow detection monitors the water flow state of the water inlet pipe in real time except for the water inlet stage of the dishwasher, and uploads the abnormal water flow state of the water inlet pipe to the cloud through the WIFI communication module. The PCB board is also equipped with a connecting terminal electrically connected to the PCB, and is connected to the dishwasher main control board through the connecting terminal. The dishwasher main control board is used to provide power and charge the backup power supply. The dishwasher main control board is communicatively connected to the main control chip module.

[0007] Preferably, it further comprises an alarm module, wherein the alarm module is mounted on the PCB and electrically connected to the PCB.

[0008] Preferably, the water flow detection of the water flow detection module and the opening and closing of the dishwasher water inlet solenoid valve are mutually exclusive.

[0009] Preferably, the water flow detection module monitors the water flow state of the water inlet pipe by using methods including but not limited to temperature sensing detection, ultrasonic sensing detection, pipeline built-in sensing element detection, and vibration sensing.

[0010] Preferably, the PCB board cover is provided with a shell, and the shell is installed on the water inlet pipe.

[0011] Preferably, moisture-proof cotton is provided at the connection between the shell and the water inlet pipe.

[0012] The utility model also provides a dishwasher, comprising the above-mentioned water flow detection fault alarm device.

[0013] The utility model has the beneficial effects that, by adopting dual power supply control, the utility model can realize uninterrupted water flow detection of the dishwasher water inlet pipe except for the normal water inlet; when the water flow is abnormal, the abnormal state is sent to the user's mobile phone via wireless prompt. The utility model can effectively avoid the serious consequences caused by the failure of the water inlet solenoid valve, the water quality is dirty, resulting in the water inlet solenoid valve not closing tightly, or the water pressure of the user's home water channel is too high, resulting in water leakage of the water inlet solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a circuit diagram of the power module of the utility model;

[0016] Figure 3 This is a circuit diagram of the backup power supply module of the utility model;

[0017] Figure 4 This is a circuit diagram of the water flow detection module of the utility model;

[0018] Figure 5 This is a circuit diagram of the utility model WIFI communication module;

[0019] Figure 6 It is a circuit diagram of the utility model alarm module;

[0020] Figure 7 It is an installation schematic diagram of the utility model.

[0021] In the figure: 1. PCB board; 2. Power module; 3. Backup power module; 4. Main control chip module; 5. WIFI communication module; 6. Water flow detection module; 61. Sensor; 7. Connection terminal; 8. Dishwasher main control board; 9. Alarm module; 10. Water inlet pipe; 11. Water inlet solenoid valve; 12. Shell; 13. Moisture-proof cotton; 14. Water flow detection fault alarm device. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Embodiment 1: A water flow detection fault alarm device, such as Figure 1 As shown, the device comprises a housing 12 and a PCB board 1, wherein the PCB board 1 is installed in the housing 12; by installing the PCB board 1 in the housing 12, the housing 12 can protect the PCB board 1 and each module installed on the PCB board 1, and at the same time, the housing 12 can be used to install the device on the water inlet pipe 10 of the dishwasher to monitor the water inlet state of the water inlet pipe 10 of the dishwasher under different states, wherein a water inlet solenoid valve 11 is installed on the water inlet pipe 10, and the water inlet pipe 10 is turned on and off by opening and closing the water inlet solenoid valve 11.

[0024] Preferably, a moisture-proof cotton 13 is provided at the connection between the outer shell 12 and the water inlet pipe 10; by providing the moisture-proof cotton 13, on the one hand, it has a moisture-proof effect to prevent water vapor from entering the device; on the other hand, it achieves the sealing of the connection between the outer shell 12 and the water inlet pipe 10.

[0025] Furthermore, the PCB board 1 is installed with a power module 2, a backup power module 3, a main control chip module 4, a WIFI communication module 5 and a water flow detection module 6 electrically connected to the PCB board 1. The power module 2 and the backup power module 3 switch power supply so that the water flow detection monitors the water flow state of the water inlet pipe 10 in real time except for the water inlet stage of the dishwasher, and uploads the abnormal water flow state of the water inlet pipe 10 to the cloud through the WIFI communication module 5; the PCB board 1 is also installed with a connecting terminal 7 electrically connected to the PCB board 1, and is connected to the dishwasher main control board 8 through the connecting terminal 7, that is, the connecting terminal 7 is connected to the dishwasher main control board 8 through a connecting line. The dishwasher main control board 8 is the main controller of the dishwasher, which is used to provide power and backup power charging. The dishwasher main control board 8 is communicatively connected to the main control chip module 4.

[0026] By adopting dual power supply control, except for the normal water inlet situation, uninterrupted water flow detection of the dishwasher water inlet pipe 10 can be achieved; specifically: when the dishwasher is in normal use or powered on, since the dishwasher main control board 8 is connected to the PCB board 1 through the connection terminal 7, the main control power supply supplies power to the main control chip module 4, the WIFI communication module 5 and the water flow detection module 6 through the power module 2, Figure 2 The circuit diagram of the power module 2 is shown in FIG. 1 . The dishwasher main control board 8 establishes a communication connection with the main control chip module 4 to perform data communication. When the dishwasher is in a power-off state, the backup power supply supplies power to the main control chip module 4, the WIFI communication module 5 and the water flow detection module 6 through the backup power module 3. Figure 3 As shown, the backup power module 3 has few components, has a low power consumption function, and can continuously monitor. At the same time, when the dishwasher is powered on, the dishwasher main control board 8 charges the backup power supply.

[0027] Furthermore, the water flow detection of the water flow detection module 6 and the opening and closing of the dishwasher water inlet solenoid valve 11 are in a mutually exclusive state; specifically: when the dishwasher is in normal use, the dishwasher main control board 8 opens the water inlet solenoid valve 11 during the water inlet stage, and at the same time sends an instruction to the main control chip module 4 to shield the water flow detection of the water flow detection module 6 and not perform water flow detection; when the water inlet is completed, the dishwasher main control board 8 closes the water inlet solenoid valve 11, and at the same time sends an instruction to the main control chip module 4 to turn on the water flow detection of the water flow detection module 6 to perform water flow detection.

[0028] The water flow detection module 6 can monitor the water flow state of the water inlet pipe 10 by using temperature sensing detection, ultrasonic sensing detection, pipeline built-in sensing element detection, vibration sensing, etc. Figure 4 As shown, water flow detection is achieved by connecting a sensor 61 to the water flow end of the water flow detection module 6, and different sensing detection options match corresponding sensors 61. Specifically:

[0029] When the dishwasher is powered on, except for the normal water inflow, when the sensor 61 detects that there is water flow or vibration in the water inlet pipe 10, the abnormal state is reported to the cloud through the WIFI communication module 5 and displayed on the user's mobile phone, and the alarm module 9 sounds an alarm to remind the user. At the same time, the main control chip module 4 sends abnormal data to the dishwasher main control board 8. After receiving the abnormal data, the dishwasher main control board 8 performs fixed period drainage. Figure 5 As shown, by connecting an antenna to the WIFI end of the WIFI communication module 5 to establish a wireless communication connection with the cloud, the abnormal state is reported to the cloud. The alarm module 9 is installed on the PCB board 1 and is electrically connected to the PCB board 1, such as Figure 6 As shown, the alarm module 9 includes a buzzer and a driving circuit for driving the buzzer to sound an alarm.

[0030] When the dishwasher is powered off, it uses a backup power supply. Since the water inlet solenoid valve 11 is in a normally closed state, no water will enter. If the water inlet solenoid valve 11 fails or other factors cause abnormal water inflow, the sensor 61 detects that the water inlet pipe 10 is abnormal, and reports the abnormal state to the cloud through the WIFI communication module 5 and displays it on the user's mobile phone. The alarm module 9 also sounds an alarm to remind the user.

[0031] like Figure 7 As shown, during installation, the water flow detection fault alarm device 14 is connected to the water inlet solenoid valve 11 and other water inlet devices of the dishwasher through pipelines, and the water inlet solenoid valve 11 is connected to the user's water inlet pipe 10 through the dishwasher's water inlet.

[0032] To sum up, the water flow detection fault alarm device of this embodiment adopts dual power supply control to realize uninterrupted water flow detection of the dishwasher water inlet pipe 10 except for the normal water inlet situation; when the water flow is abnormal, the abnormal status is sent to the user's mobile phone for prompting by wireless means; it can effectively avoid serious consequences caused by failure of the water inlet solenoid valve 11, or dirty water quality causing the water inlet solenoid valve 11 to be loosely closed, or excessive water pressure in the user's home water channel causing water leakage from the water inlet solenoid valve 11.

[0033] Embodiment 2: This embodiment provides a dishwasher, which includes the water flow detection fault alarm device provided in Embodiment 1.

[0034] The dishwasher can effectively avoid serious consequences caused by failure of the water inlet solenoid valve 11, or poor closure of the water inlet solenoid valve 11 due to dirty water, or excessive water pressure in the user's home water line causing water leakage from the water inlet solenoid valve 11 through the water flow detection fault alarm device 14; by adopting dual power supply control, in addition to normal water inlet conditions, uninterrupted water flow detection of the dishwasher water inlet pipe 10 can be achieved; when the water flow is abnormal, the abnormal status is sent to the user's mobile phone as a prompt via wireless means.

[0035] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model should be considered to belong to the protection scope of the present utility model.

Claims

1. A water flow detection fault alarm device, installed on a water inlet pipe (10) of a dishwasher, wherein a water inlet solenoid valve (11) is installed on the water inlet pipe (10), characterized in that: The invention comprises a PCB board (1), a power module (2) installed on the PCB board (1) and electrically connected to the PCB board (1), a backup power module (3), a main control chip module (4), a WIFI communication module (5) and a water flow detection module (6); the power module (2) and the backup power module (3) switch power supply so that the water flow detection can monitor the water flow state of the water inlet pipe (10) in real time except during the water inlet stage of the dishwasher, and upload the abnormal water flow state of the water inlet pipe (10) to the cloud through the WIFI communication module (5); the PCB board (1) is also installed with a connection terminal (7) electrically connected to the PCB, and is connected to the dishwasher main control board (8) through the connection terminal (7); the dishwasher main control board (8) is used to provide power and charge the backup power; the dishwasher main control board (8) is communicatively connected to the main control chip module (4).

2. A water flow detection fault alarm device according to claim 1, characterized in that: It also includes an alarm module (9), which is installed on the PCB board (1) and is electrically connected to the PCB.

3. A water flow detection fault alarm device according to claim 1, characterized in that: The water flow detection of the water flow detection module (6) and the opening and closing of the dishwasher water inlet solenoid valve (11) are in a mutually exclusive state.

4. A water flow detection fault alarm device according to claim 1, characterized in that: The water flow detection module (6) monitors the water flow state of the water inlet pipe (10) by using, including but not limited to, temperature sensing detection, ultrasonic sensing detection, pipeline built-in sensing element detection, and vibration sensing.

5. A water flow detection fault alarm device according to claim 1, characterized in that: The PCB board (1) is covered with a shell (12), and the shell (12) is installed on the water inlet pipe (10).

6. A water flow detection fault alarm device according to claim 5, characterized in that: A moisture-proof cotton (13) is provided at the connection between the outer shell (12) and the water inlet pipe (10).

7. A dishwasher, characterized in that: It comprises the water flow detection fault alarm device as described in any one of claims 1-6.

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