Control circuit of water pumping device and water pumping device

Abstract

The utility model relates to a control circuit of a water pumping device and the water pumping device, the control circuit comprises a detection module, a main control module and a driving module, the output end of the detection module is connected with the first signal end of the main control module, and the first control end of the main control module is connected with the controlled end of the driving module. Whether water exists on the circuit board or not is detected in real time through the detection module, when the detection module detects that water enters the circuit board, a water inlet signal is output to the main control module, after the main control module receives the water inlet signal, the motor is controlled to stop working, meanwhile, the whole circuit board is controlled to stop, and the main control module is in a dormant state; the problem that a circuit of a circuit board is out of control after water enters a product can be avoided, the starting module can be shut down in time to enable the water pumping device to stop pumping water when a user is absent, the problem that the water pumping device cannot work due to the fact that components are damaged due to water inflow can be effectively avoided, unnecessary loss brought to consumers is avoided, and the water pumping device is suitable for popularization and application. The service life of the water pumping device is effectively prolonged.

Description

[Technical field]

[0001] The present application relates to the technical field of household appliances, and in particular to a control circuit of a water pump and a water pump. [Background technology]

[0002] With the advancement and development of science and technology, home appliances are constantly updated and replaced. With the continuous update of social needs, corresponding products are constantly being developed. The emergence of bottled water has changed people's long-standing drinking habits. Among the main types of drinking water, bottled water occupies a large proportion. Bottled water and water dispensers have entered thousands of households, bringing convenience and fashion to people.

[0003] In order to facilitate the extraction of water from the bucket, a water pump related to bottled water came into being. When using it, insert the water pumping pipe into the bottled water, and then start the electric drive device, and the water will be extracted through the water pumping pipe. This water pump is suitable for bottled water of various specifications, which can save effort, improve the efficiency of water extraction, and is convenient for use in homes or offices.

[0004] However, when the existing water pumps on the market are accidentally immersed in water, the control circuit is still in operation and cannot stop working in time. The circuit board that has entered the water may damage the components and cause the water pump to be unusable. [Summary of the invention]

[0005] In order to solve the problem that when water enters the circuit board of the existing water pump, the control circuit is still in working state, which will cause damage to components and make the water pump unusable, the utility model uses a detection module to detect whether there is water on the circuit board in real time. When the detection module detects that water has entered the circuit board, it outputs a water inflow signal to the main control module. After the main control module receives the water inflow signal, it controls the motor to stop working.

[0006] This application proposes the following solution:

[0007] A control circuit for a water pump comprises a detection module, a main control module and a drive module, wherein the output end of the detection module is connected to the first signal end of the main control module, and the first control end of the main control module is connected to the controlled end of the drive module.

[0008] In the control circuit of a water pump as described above, the driving module includes a water pumping motor M, the first end of the water pumping motor M is connected to the first control end of the main control module, a diode D1 is connected between the first end and the second end of the water pumping motor M, and at least one capacitor is connected between the first end and the second end of the water pumping motor M.

[0009] In the control circuit of a water pump as described above, the detection module includes a water detection pad RCW, a first end of the water detection pad RCW is connected to the first signal end of the main control module, and a second end of the water detection pad RCW is grounded.

[0010] The control circuit of a water pump as described above also includes a power supply module, which includes a power supply interface USB1 and a battery connection terminal CON1. ​​The first end of the power supply interface USB1 is connected to the charging input end of the main control module. A resistor R1 is connected between the first end and the fourth end of the power supply interface USB1. The fourth end of the power supply interface USB1 is grounded, the second end of the battery connection terminal CON1 is grounded, and the first end of the battery connection terminal CON1 is connected to the battery end of the main control module.

[0011] The control circuit of a water pump as described above also includes a charging indication module, a starting module and a motor working indication module, the controlled end of the charging indication module is connected to the second control end of the main control module, the output end of the starting module is connected to the second signal end of the main control module, and the controlled end of the motor working indication module is connected to the first control end of the main control module.

[0012] In the control circuit of a water pump as described above, the charging indication module includes an indicator light LED1 and a resistor R3, the positive pole of the indicator light LED1 is connected to the second control end of the main control module, the negative pole of the indicator light LED1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is grounded.

[0013] In the control circuit of a water pump as described above, the start module comprises a button K1, a first end of the button K1 is grounded, and a second end of the button K1 is connected to a second signal end of the main control module.

[0014] In the control circuit of a water pump as described above, the motor operation indication module includes a resistor R2 and a parallel indicator light group, the first end of the resistor R2 is connected to the first control end of the main control module, the second end of the resistor R2 is connected to the negative electrode of the parallel indicator light group, the positive electrode of the parallel indicator light group is connected to the first end of the battery connection terminal CON1, and the parallel indicator light group includes two or more indicator lights connected in parallel.

[0015] A water pump comprises the control circuit of the water pump as described above.

[0016] The embodiment of the utility model detects in real time whether there is water on the circuit board through the detection module. When the detection module detects that water has entered the circuit board, it outputs a water inflow signal to the main control module. After receiving the water inflow signal, the main control module controls the motor to stop working, and at the same time controls the entire circuit board to shut down and puts the main control module in a dormant state. This can avoid the problem of circuit board circuit out of control after water enters the product, and can shut down the start module in time when the user is not there to stop the water pump from pumping water. This can also effectively avoid the problem of the water pump being unable to work due to damage of components due to water inflow, avoid unnecessary losses to consumers, and effectively extend the service life of the water pump.

Brief Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a control circuit structure block diagram of a water pump according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 Schematic diagram of the detection module, main control module, charging indication module and starting module;

[0020] Figure 3 This is the schematic diagram of the power module;

[0021] Figure 4 It is the schematic diagram of the drive module and the motor work indication module. [Specific implementation method]

[0022] Please refer to Figures 1 to 4 As shown, this embodiment proposes a control circuit for a water pump, including a detection module 1, a main control module 2, a drive module 3, a power module 4, a charging indication module 5, a starting module 6 and a motor operation indication module 7.

[0023] This embodiment uses the detection module to detect in real time whether there is water on the circuit board. When the detection module detects that water has entered the circuit board, it outputs a water inflow signal to the main control module. After receiving the water inflow signal, the main control module controls the motor to stop working, and at the same time controls the entire circuit board to shut down and puts the main control module in a dormant state. This can avoid the problem of circuit board circuit out of control after water enters the product, and can shut down the start module in time when the user is not there to stop the water pump from pumping water. It can also effectively avoid the problem of the water pump being unable to work due to damage to components due to water inflow, avoid unnecessary losses to consumers, and effectively extend the service life of the water pump.

[0024] As a preferred solution rather than a specific limitation, and as a safety measure to protect the control circuit, the main control module of the control circuit of the water pump in this embodiment needs to be activated by charging or pressing the start button multiple times after being in a dormant state. If during the activation process, the detection module 1 detects the presence of water, the alarm circuit on the control circuit will emit sound and light to remind the user, thereby avoiding damage to the main control module due to accidental restart, effectively avoiding unnecessary losses to consumers, and extending the service life of the water pump.

[0025] When the main control module 2 receives the water inflow signal, the main control module 2 will immediately enter the dormant state. In this state, when the start signal is input to the main control module 2 of the machine, the drive module 3 of the machine will not be turned on, and the water pump motor of the machine will not start to pump water. When there is still water accumulated in the detection module and the circuit board and has not been cleared, the main control module 2 of the machine will remain in the dormant state; because the water entering the circuit board contains impurities and is also a conductor, when there is water accumulated on the product circuit board, the signal input device of the machine may be turned on from time to time to give the main control module 2 a start signal. When the user is not at the use site, the machine may still start automatically and cannot be shut down in time. The continuous discharge of water from the machine is likely to cause immeasurable losses to consumers; and the starting work of the machine in the case of a large amount of water accumulation will also cause damage to the components on the circuit board of the machine. When the components on the circuit board are damaged by water inflow, the circuit board of the machine cannot be continuously used after the water is cleaned, and the life span is seriously reduced. Therefore, it is necessary to control the circuit board to shut down in time.

[0026] After the machine is flooded, after the water on the circuit board of the machine is cleaned up or evaporates naturally, the consumer can activate the control module by connecting it to the charging method so that the machine can resume normal use; if the water on the circuit board is not completely cleared, the charging activation will be invalid. This design can better ensure the normal use cycle of the machine, and at the same time ensure the safety of consumers when using the product.

[0027] As a preferred solution rather than a specific limitation, the detection module 1 is used to detect whether water has entered the circuit board. When water has entered the circuit board, a water inflow signal is sent to the main control module 2. The start module 6 is used to send a switch signal to the main control module 2 when receiving a start / stop control instruction from the user, that is, when the user presses the switch. The main control module 2 is used to control the drive module 3 to operate or stop running when receiving a water inflow signal or a switch signal. The power supply module 4 is used to supply a stable power supply to the entire control circuit. The charging indication module 5 is used to prompt the user of the charging status when the user plugs an external power supply into the water pump. The motor operation indication module 7 is used to emit a light source to prompt the user of the motor status when the motor is operating.

[0028] As a preferred solution rather than a specific limitation, the detection module 1 is used to detect whether water has entered the circuit board. When water is detected to have entered the circuit board, a water ingress signal is sent to the main control module 2. The output end of the detection module 1 is connected to the first signal end of the main control module 2, and the first control end of the main control module 2 is connected to the controlled end of the driving module 3.

[0029] In this embodiment, the detection module 1 detects water ingress on the circuit board in real time. When water ingress is detected on the circuit board, a water ingress signal is sent to the main control module 2. The detection module 1 is specifically a pad structure similar to the resistance pad, except that the pad is not soldered in the PCBA. There can be multiple water detection pads RCW, and the multiple water detection pads RCW are connected in parallel and arranged at the edge of the circuit board for detection. Alternatively, only a single one can be arranged at a location prone to water ingress to detect the location, thereby ensuring that water can be detected and the water pump can be shut off in time.

[0030] As a preferred solution rather than a specific limitation, the driving module 3 includes a water pumping motor M, the first end of the water pumping motor M is connected to the first control end of the main control module 2, a diode D1 is connected between the first end and the second end of the water pumping motor M, and at least one capacitor is connected between the first end and the second end of the water pumping motor M.

[0031] In this embodiment, diodes D1 are provided at both ends of the water pumping motor M to avoid damage to the motor and ensure safe operation of the motor. The second end of the water pumping motor M is connected to the first end of the battery connection terminal CON1 to achieve power supply and stable control of the motor.

[0032] As a preferred solution but not a specific limitation, the detection module 1 includes a water detection pad RCW, a first end of the water detection pad RCW is connected to the first signal end of the main control module 2, and a second end of the water detection pad RCW is grounded.

[0033] The water detection pad RCW of the present embodiment can be defaulted to a resistance pad, that is, the water detection pad RCW is actually composed of a first pad and a second pad with a certain distance between them, but the two pads are not welded when the circuit is installed. When water enters the circuit board, since water has a certain conductivity, it can conduct the two pads so that the main control module 2 detects a low-level signal, thereby determining whether water has entered. The circuit adopts a simple principle to detect whether water has entered the circuit board. The circuit structure is simple, the stability and reliability are strong, the cost is low, the development difficulty is small, and it meets the design requirements of the water pump.

[0034] As a preferred solution rather than a specific limitation, it also includes a power module 4, which includes a power supply interface USB1 and a battery connection terminal CON1. ​​The first end of the power supply interface USB1 is connected to the charging input end of the main control module 2, and a resistor R1 is connected between the first end and the fourth end of the power supply interface USB1. The fourth end of the power supply interface USB1 is grounded, the second end of the battery connection terminal CON1 is grounded, and the first end of the battery connection terminal CON1 is connected to the battery end of the main control module 2.

[0035] In this embodiment, a stable power supply is input through the power module and connected to the main control module 2, and the power supply is then controlled by the power management module built into the chip of the main control module 2, and then input into the battery to power the battery, which is stable and reliable. In this embodiment, in order to facilitate battery replacement, the connection is made through the battery connection terminal CON1, which is stable and reliable.

[0036] As a preferred solution rather than a specific limitation, the controlled end of the charging indication module 5 is connected to the second control end of the main control module 2, the output end of the starting module 6 is connected to the second signal end of the main control module 2, and the controlled end of the motor operation indication module 7 is connected to the first control end of the main control module 2.

[0037] This embodiment is provided with a charging indication module 5, a starting module 6 and a motor operation indication module 7. The user controls the starting module 6 to start the control circuit. When the user plugs in the water pump, the charging indication module 5 indicates the power supply status to inform the user. When the motor is running, the motor operation indication module 7 indicates the operation of the motor to the user, so that the user can better understand the operating status of the water pump.

[0038] As a preferred solution rather than a specific limitation, the charging indication module 5 includes an indicator light LED1 and a resistor R3, the positive pole of the indicator light LED1 is connected to the second control end of the main control module 2, the negative pole of the indicator light LED1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is grounded.

[0039] The charging indication module 5 of this embodiment is mainly composed of an indicator light LED1 and a resistor R3. By providing the resistor R3, it is possible to avoid the indicator light LED1 from burning out when the circuit current is too large, and the charging status can be better indicated.

[0040] As a preferred solution but not a specific limitation, the start module 6 includes a button K1 , a first end of the button K1 is grounded, and a second end of the button K1 is connected to a second signal end of the main control module 2 .

[0041] This embodiment controls the start and stop of the water pump by setting a button K1, which can be controlled stably and reliably, and the circuit is simple and reliable.

[0042] As a preferred solution rather than a specific limitation, the motor operation indication module 7 includes a resistor R2 and a parallel indicator light group, the first end of the resistor R2 is connected to the first control end of the main control module 2, the second end of the resistor R2 is connected to the negative pole of the parallel indicator light group, the positive pole of the parallel indicator light group is connected to the first end of the battery connection terminal CON1, and the parallel indicator light group includes two or more indicator lights connected in parallel.

[0043] The motor working indication module 7 of the present embodiment is mainly composed of a parallel indicator light group and a resistor R2. By setting the resistor R2, it is possible to avoid the parallel indicator light group from burning out when the circuit current is too large, and the charging status can be better indicated. The parallel indicator light group includes at least one indicator light, and also includes more than two indicator lights, which can better indicate the working status of the motor, stably and reliably.

[0044] This embodiment also provides a water pump, including a control circuit of the water pump as described above.

[0045] The water pump of this embodiment is provided with a detection module and a main control module on the internal circuit. The detection module detects in real time whether there is water on the circuit board. When the detection module detects that water has entered the circuit board, it outputs a water inflow signal to the main control module. After receiving the water inflow signal, the main control module controls the motor to stop working and controls the entire circuit board to shut down at the same time, which can effectively avoid the problem of the water pump being unable to work due to damage of components due to water inflow, and effectively extend the service life of the water pump.

[0046] The above is an implementation method provided in combination with specific content, and it is not considered that the specific implementation of this application is limited to these descriptions. Any similarity or similarity with the method, structure, etc. of this application, or any technical deduction or replacement made on the premise of the concept of this application, shall be deemed to be within the scope of protection of this application.

Claims

1. A control circuit for a water pump, characterized in that: It comprises a detection module (1), a main control module (2) and a driving module (3), wherein the output end of the detection module (1) is connected to the first signal end of the main control module (2), and the first control end of the main control module (2) is connected to the controlled end of the driving module (3); The driving module (3) comprises a pumping motor M, a first end of the pumping motor M is connected to a first control end of the main control module (2), a diode D1 is connected between the first end and the second end of the pumping motor M, and at least one capacitor is connected between the first end and the second end of the pumping motor M; The detection module (1) comprises a water detection pad RCW, a first end of the water detection pad RCW is connected to a first signal end of the main control module (2), and a second end of the water detection pad RCW is grounded.

2. A control circuit for a water pump according to claim 1, characterized in that: The device also comprises a power module (4), the power module (4) comprising a power supply interface USB1 and a battery connection terminal CON1, the first end of the power supply interface USB1 being connected to the charging input end of the main control module (2), a resistor R1 being connected between the first end and the fourth end of the power supply interface USB1, the fourth end of the power supply interface USB1 being grounded, the second end of the battery connection terminal CON1 being grounded, and the first end of the battery connection terminal CON1 being connected to the battery end of the main control module (2).

3. A control circuit for a water pump according to claim 2, characterized in that: It also comprises a charging indication module (5), a starting module (6) and a motor operation indication module (7), wherein the controlled end of the charging indication module (5) is connected to the second control end of the main control module (2), the output end of the starting module (6) is connected to the second signal end of the main control module (2), and the controlled end of the motor operation indication module (7) is connected to the first control end of the main control module (2).

4. A control circuit for a water pump according to claim 3, characterized in that: The charging indication module (5) comprises an indicator light LED1 and a resistor R3, wherein the positive electrode of the indicator light LED1 is connected to the second control end of the main control module (2), the negative electrode of the indicator light LED1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is grounded.

5. The control circuit of a water pump according to claim 3, characterized in that: The start module (6) comprises a button K1, a first end of the button K1 is grounded, and a second end of the button K1 is connected to a second signal end of the main control module (2).

6. A control circuit for a water pump according to claim 3, characterized in that: The motor operation indication module (7) comprises a resistor R2 and a parallel indicator light group, wherein a first end of the resistor R2 is connected to a first control end of the main control module (2), a second end of the resistor R2 is connected to a negative electrode of the parallel indicator light group, a positive electrode of the parallel indicator light group is connected to a first end of the battery connection terminal CON1, and the parallel indicator light group comprises two or more indicator lights connected in parallel.

7. A water pump, characterized in that: A control circuit comprising a water pump as described in any one of claims 1-6.

Images