WO2018133620A1

WO2018133620A1 - Externally provided detergent adding device, control method therefor and washing machine

Info

Publication number: WO2018133620A1
Application number: PCT/CN2017/117846
Authority: WO
Inventors: 宋华诚; 吕艳芬; 许升
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2017-01-17
Filing date: 2017-12-21
Publication date: 2018-07-26
Also published as: CN108315965B; CN108315965A

Abstract

Disclosed is an externally provided detergent adding device, comprising a detergent box, a water inlet pipeline, an adding pipeline and an externally provided circuit board, wherein a first end of the water inlet pipeline is connected to a tap water connector; a second end is connected to a water inlet valve of a washing machine; the detergent box is in communication with the water inlet pipeline by means of the adding pipeline; the adding pipeline is mounted with an adding mechanism provided for adding detergent into the water inlet pipeline; and the water inlet pipeline is provided with a water flow sensor, with the water flow sensor and the adding mechanism being connected to the externally provided circuit board.

Description

External detergent delivery device, control method thereof and washing machine

Technical field

The present disclosure relates to the field of home appliance technology, for example, to an external detergent dispensing device, a control method thereof, and a washing machine using the external detergent dispensing device.

Background technique

The fully automatic washing machine in the related art generally detects the weight of the laundry and the ambient temperature through the sensor, and then transfers it to the computer program, and the computer program automatically calculates the amount of the detergent to be added, and intelligently controls the delivery of the pump when entering the water. The detergent is pumped from the storage chamber into the detergent box to achieve precise delivery of the detergent. However, in the related art domestic washing machine, there are still many washing machines that do not have the automatic detergent dispensing function, and the user needs to manually add the detergent to the detergent box in advance, and the washing machine then washes the detergent into the washing by flushing according to the washing process. Inside the tube. With this method of adding, the amount of detergent to be dispensed depends on the arbitrariness of the user's operation, and often there are too many or too little to be delivered, too little to cause the laundry to be unclean, too much to cause rinsing, laundry, and laundry. Liquid residue, affecting the appearance and wearing experience of the clothes. Moreover, since it is necessary to add a detergent to the detergent box for each washing, it is inconvenient for the user to use. For such a washing machine which is not equipped with an automatic dispensing device, particularly a washing machine in a user's home, there is no method in the related art for automatic dispensing of the detergent by simple modification; and in the case where the other functions of the washing machine are intact, the machine is discarded. Or replacing a new washing machine will cause waste of resources and increase the burden on consumers.

Summary of the invention

The present disclosure provides an external detergent dispensing device that realizes connection and communication with the body of the washing machine by providing the dispensing device outside the washing machine of the related art, so that the ordinary washing machine can automatically dispense the detergent.

The present disclosure also provides a control method suitable for the above external detergent dispensing device.

The present disclosure also provides a washing machine using the above-described external detergent dispensing device and a control method therefor.

An external detergent dispensing device comprises a detergent box, a water inlet pipeline, a delivery pipeline and an external circuit board, the first end of the water inlet pipeline is connected with a tap water joint, and the second end is connected with a water inlet valve of the washing machine. The detergent box is connected to the water inlet pipe through a delivery pipeline, and the delivery pipeline is provided with a placing mechanism arranged to discharge detergent into the water inlet pipeline; the water inlet pipe is provided with a water flow sensor, the water flow Both the sensor and the placement mechanism are connected to an external circuit board.

Optionally, the dispensing mechanism is a delivery pump or a venturi; wherein the delivery pump is a peristaltic pump or a piston pump.

Optionally, a first one-way valve is further mounted on the delivery line to prevent tap water from entering the detergent box from the water inlet line.

Optionally, the water flow sensor is a flow sensor for detecting a water flow rate or a pressure sensor for detecting a hydrostatic pressure of the pipeline; wherein the measuring nozzle of the pressure sensor is located on an inner wall surface of the water inlet pipe, and when the water flows, the water sensor is detected. The pressure is reduced, and when the water is at rest, the detected pressure is increased to the tap water supply pressure.

Optionally, a second one-way valve is installed on the inlet pipe between the detergent box and the tap water joint to prevent the detergent from siphoning to the tap water joint.

Optionally, a detergent injection port is disposed above the detergent box, and a liquid level sensor is disposed in the detergent box, and the liquid level sensor is connected to an alarm device, and when the liquid level in the detergent box is detected The alarm turns on the alarm when the value is set.

Optionally, a mixing chamber disposed above the inner cylinder of the washing machine is further disposed to mix the detergent with the tap water.

The control method of the external detergent delivery device comprises: the washing machine end knows the required amount of detergent; the water inlet; the washing machine end sends the detergent delivery instruction; the delivery end detects whether the water flow change and the delivery instruction are consistent by the water flow sensor, if consistent, If the inconsistency is reached, then return to continue to check whether the water flow change is consistent with the delivery instruction; determine whether the detergent delivery amount or delivery time is reached, and determine that the detergent delivery amount or delivery time is reached, the delivery mechanism is turned off, and the judgment is neither reached. When the amount of detergent delivered is again, the return is continued to determine whether the detergent delivery amount or delivery time is reached.

Optionally, the determining whether the detergent delivery amount or the delivery time is reached further comprises: if the detergent delivery amount or the delivery time is reached, the washing machine end sends a stop delivery instruction; and the delivery end detects whether the water flow change and the stop delivery instruction are detected by the water flow sensor. Consistent, if consistent, turn off the delivery.

Optionally, the detecting end of the water flow sensor detecting whether the water flow change is consistent with the stop delivery instruction further comprises: if the water flow change detected by the water flow sensor is inconsistent with the stop delivery instruction, the delivery end determines whether the maximum detergent delivery is reached. Time, when it is judged that the maximum time for detergent delivery is reached, the dispensing mechanism is turned off, and when it is judged that the maximum time for detergent delivery is not reached, the returning continues to determine whether the maximum time for detergent delivery is reached.

Optionally, the determining whether the detergent delivery amount or the delivery time further comprises: the washing machine determines whether the water inlet is completed, determines that the water intake is completed, starts washing, and determines that the water inlet is not completed, and continues to determine whether the water inlet is completed. .

Alternatively, the end of the washing machine knows the amount of detergent required by weighing the weight of the laundry.

Optionally, the washing machine end issues a detergent delivery instruction, and the washing machine sends a detergent delivery instruction or stops the delivery instruction to the delivery end by controlling the flow of water at regular intervals.

Optionally, the washing machine issues the detergent delivery instruction and the stop delivery instruction in such a manner that the water inlet valve of the washing machine is continuously cut off three times in one second interval during the water inlet process.

A washing machine using the external detergent dispensing device as described above or the control method of the external detergent dispensing device as described above.

The external detergent delivery device of the present disclosure realizes the automatic delivery function of a general washing machine. Moreover, the structure is simple, the modification is convenient, and the requirement for the automatic washing of the detergent in the ordinary washing machine in the related art is satisfied.

DRAWINGS

1 is a schematic structural view of an external detergent dispensing device and a washing machine provided in the first embodiment.

2 is a schematic structural view of an external detergent dispensing device provided in the first embodiment.

3 is a flow chart of a control method of the external detergent dispensing device provided in the second embodiment.

4 is a flow chart showing a control method of the external detergent dispensing device provided in the third embodiment.

The figure is marked as follows:

1. Detergent box; 2. Inlet pipeline; 3. Injecting pipeline; 4. Tap water joint; 5. Washing machine inlet valve; 6. Dispensing mechanism; 7. Water flow sensor; 8. First check valve; Second check valve; 10, detergent injection port; 11, liquid level sensor; 12, mixing chamber; 20, washing machine.

detailed description

Embodiment 1

As shown in FIG. 1 and FIG. 2, the present embodiment provides an external detergent dispensing device, which solves the problem that the conventional washing machine cannot automatically dispense detergent in the related art. The device comprises a detergent box 1 and a water inlet pipe 2 disposed outside the washing machine 20, wherein the first end of the water inlet pipe 2 is connected to the tap water joint 4, and the second end is connected to the washing machine inlet valve 5 to realize the washing machine 20 The water inlet is normally connected; the first end of the delivery line 3 is also connected to the water inlet pipe 2, and the second end of the delivery line 3 is installed in the detergent box 1 for discharging the detergent into the water inlet pipe 2. The delivery line 3 is further provided with a placing mechanism 6 which can select a delivery pump or a venturi tube. Here, in this embodiment, a delivery pump with convenient control and accurate delivery, such as a piston pump, a peristaltic pump, etc., can be used. . In addition, the water inlet pipe 2 is further provided with a water flow sensor 7 capable of detecting a change of the water flow. The water flow sensor 7 and the loading mechanism 6 are both connected to the external circuit board, and the water flow sensor 7 sends the detection signal to the external circuit board, and the external signal is externally disposed. The circuit board issues an instruction to control the opening or closing of the dispensing mechanism 6 to achieve automatic and quantitative dispensing of the detergent.

Optionally, the water flow sensor 7 may be a flow sensor that detects water flow, or a pressure sensor that detects hydrostatic pressure of the pipeline. When using a pressure sensor, the pressure sensor measuring nozzle should be located on the wall of the tap water flow line. When the water flows, the detected pressure is reduced; when the water is stationary, the detected pressure is increased to the tap water supply pressure. In the embodiment, on the basis of the ordinary washing machine, the connection with the main body of the washing machine 20 is completed by providing the external detergent box 1 and the external circuit board, and the communication problem between the detergent box 1 and the washing machine 20 is solved; the water flow sensor 7 is passed. In the case where the water flow of the washing machine 20 is regularly controlled to be detected, the amount of detergent or the time of dispensing is known, and then the dispensing mechanism 6 is controlled to open or close, thereby realizing the automatic delivery function of the ordinary washing machine.

Optionally, the delivery line 3 is further provided with a first one-way valve 8 for allowing the detergent to enter the water inlet line 2 from the detergent box 1 while preventing the tap water from entering the detergent box 1 from the water inlet line 2. Optionally, a second check valve 9 is also mounted on the water inlet pipe 2 between the detergent box 1 and the water connection 4, so that tap water can flow into the washing machine 20 while avoiding siphoning of the detergent to the tap water joint 4.

In the present embodiment, a detergent dispensing opening 10 is provided above the detergent box 1, and is provided to add a detergent to the detergent box 1. A liquid level sensor 11 is disposed in the detergent box 1, and the liquid level sensor 11 is connected to the alarm device. When it is detected that the liquid level in the detergent box 1 reaches the set value, the alarm device turns on an alarm to remind the user to promptly move to the detergent box. Add detergent to 1. Optionally, the set value is 1/5 of the height of the inner cavity of the detergent box 1. The detergent box 1 of the present embodiment can contain detergent and fabric softener in an ultra-large capacity, so that the consumer does not need to separately place the detergent and the softener, so that the laundry process is integrated, and the detergent delivery is more accurate and reasonable. In addition, in this embodiment, a mixing chamber 12 is further disposed above the inner cylinder of the washing machine 20. The tap water and the detergent in the water inlet pipe 2 can be thoroughly mixed after flowing into the mixing chamber 12 to improve the washing effect.

Embodiment 2

As shown in FIG. 3, the embodiment provides a control method suitable for the external detergent dispensing device according to the first embodiment, including:

In step 110, the washing machine 20 is powered on;

In step 120, the washing machine end knows the amount of detergent required;

In step 120, the washing machine 20 can automatically obtain the laundry weight and the ambient temperature information through the weight sensor and the temperature sensor, and automatically calculate the amount of the detergent to be added.

In step 130, water is introduced;

In step 140, the washing machine end issues a detergent delivery instruction;

Step 140, the washing machine 20 controls the water flow by regular intervals, and issues a detergent delivery instruction to the delivery end. For example, the water inlet valve 5 of the washing machine can be continuously cut three times at intervals of one second in the water inlet process.

In step 150, the delivery end detects the water flow change by the water flow sensor 7, and determines whether the water flow change is consistent with the delivery instruction of the washing machine 20. If yes, the process proceeds to step 160. If not, the process returns to step 150 to continue the detection:

In step 160, the external circuit board controls to open the placement mechanism 6;

In step 170, it is determined whether the detergent delivery amount or the delivery time is reached, and when it is determined that the detergent delivery amount or the delivery time is reached, the process proceeds to step 180; when it is determined that neither the detergent delivery amount nor the delivery time is reached, the process returns to step 170 to continue the determination;

In step 180, the external circuit board controls to turn off the placement mechanism 6;

In step 190, the washing machine 20 determines whether the water inlet is completed, and determines that the water intake is completed, then proceeds to step 1100 to determine that no water intake is completed, and then continues the determination process;

In step 1100, washing begins.

The present application uses the water flow sensor 7 to detect the change of the water flow, and judges the delivery signal according to the change of the water flow, and transmits the required amount of detergent to the detection position of the delivery device at a regular interval to control the delivery pump or the venturi pipeline. The opening time, in order to achieve the precise delivery of detergent, with the appropriate automatic washing and rinsing procedures, to achieve reasonable consumption of valuable resources such as detergent, softener, water, electricity, etc., so that the clothes are as clean as new, and truly Automated and intelligent.

Embodiment 3

As shown in FIG. 4, this embodiment provides another method for controlling an external detergent dispensing device, which is basically the same as the method in the second embodiment, and the difference is that the control process between step 170 and step 180 is as follows. :

In step 172, it is determined whether the detergent delivery amount or the delivery time is reached, and when it is determined that the detergent delivery amount or the delivery time is reached, the process proceeds to step 174, and when it is determined that the detergent delivery amount or the delivery time has not been reached, the process returns to step 172 to continue the determination.

In step 174, the washing machine end issues a stop delivery command;

In step 176, the delivery end detects whether the water flow change coincides with the stop delivery command by the water flow sensor 7, and if yes, proceeds to step 180; if not, proceeds to step S178.

In step 178, the delivery terminal determines whether the maximum time for detergent delivery has been reached, and determines that the maximum time for detergent delivery has been reached. If the process proceeds to step 180 and determines that the maximum time for detergent delivery has not been reached, the process returns to step 178 to continue the determination.

In step 180, the external circuit board controls to turn off the placement mechanism 6.

In this embodiment, after the user installs the external detergent delivery device, the driver program of the washing machine 20 is updated through the network or the after-sales personnel, that is, the water flow control mode for outputting the detergent dosage can be generated, and the external detergent delivery device has a simple structure and is modified. Convenient to meet the needs of the existing ordinary washing machine to automatically put detergent. E.g:

If weighed by the clothes, we can know that the detergent demand of the clothes is 20g, and the water inlet of the washing machine 20 can be regularly controlled during the water inflow process, for example, the washing machine is continuously cut off at one second interval during the water inflow process. Water valve 5 three times. In this way, on the water inlet pipe 2, a change in the water flow corresponding to the time interval is detected. By detecting changes in water flow, an external circuit board controls the delivery of the pump or the use of a venturi to deliver the detergent. After the required detergent delivery time is reached, the water inlet valve 5 of the washing machine is continuously cut off at intervals of one second. After the water flow is changed at the detection end, the delivery pump or the venturi is closed to terminate the delivery of the detergent.

Industrial applicability

The external detergent delivery device of the present disclosure has the advantages of simple structure, convenient modification, and realizing the automatic delivery function of the ordinary washing machine.

Claims

An external detergent delivery device comprises a detergent box (1), a water inlet line (2), a delivery line (3) and an external circuit board, the first end of the water inlet line (2) and tap water The joint (4) is connected, the second end is connected to the washing machine inlet valve (5), and the detergent box (1) is connected to the water inlet pipe (2) through the delivery line (3), the delivery line ( 3) a loading mechanism (6) is mounted thereon for dispensing detergent into the water inlet pipe (2); the water inlet pipe (2) is provided with a water flow sensor (7), the water flow sensor (7) and The placing mechanism (6) is connected to an external circuit board.
The external detergent dispensing device according to claim 1, wherein the dispensing mechanism (6) is a delivery pump or a venturi; the water flow sensor (7) is a flow sensor for detecting a water flow or detecting a pipeline water. Static pressure sensor.
The external detergent dispensing device according to claim 1 or 2, wherein the delivery line (3) is further provided with a first one-way valve (8) to prevent tap water from entering the water inlet pipe (2) Detergent box (1).
The external detergent dispensing device according to claim 1 or 2, wherein a second check valve is mounted on the water inlet pipe (2) between the detergent box (1) and the water connection (4) ( 9) to avoid detergent siphoning to the tap fitting (4).
The external detergent dispensing device according to claim 1, wherein a detergent dispensing opening (10) is disposed above the detergent box (1), and a liquid level sensor is disposed in the detergent cartridge (1) (11) The liquid level sensor (11) is connected to the alarm device, and when the liquid level in the detergent box (1) is detected to reach a set value, the alarm device turns on an alarm.
The external detergent dispensing device according to claim 1, further comprising a mixing chamber (12) disposed above the inner cylinder of the washing machine (20), configured to mix the detergent with tap water.
The control method of the external detergent delivery device comprises: the washing machine end knows the required amount of detergent; the water inlet; the washing machine end sends the detergent delivery instruction; and the delivery end detects whether the water flow change and the delivery instruction are consistent by the water flow sensor (7). If they are the same, the launching mechanism (6) is turned on. If they are inconsistent, return to continue to check whether the water flow change is consistent with the delivery command; determine whether the detergent delivery amount or delivery time is reached, and determine whether the detergent delivery amount or delivery time is reached, and then the delivery is turned off. The institution (6), when judging that neither the detergent amount nor the delivery time is reached, returns to continue to judge whether the detergent delivery amount or the delivery time is reached.
The method for controlling an external detergent dispensing device according to claim 7, wherein the determining whether the detergent delivery amount or the delivery time is reached further comprises: if the detergent delivery amount or the delivery time is reached, the washing machine end stops sending The delivery end detects whether the water flow change and the stop delivery command are consistent by the water flow sensor (7). If they are consistent, the delivery mechanism (6) is closed. If not, the delivery end determines whether the maximum time for detergent delivery is reached, and the washing is judged to be reached. When the agent is placed at the maximum time, the dispensing mechanism (6) is turned off, and when it is judged that the maximum time for the detergent is not reached, the returning continues to determine whether the maximum time for the detergent to be delivered is reached.
The control method of the external detergent dispensing device according to claim 8, wherein the determining whether the detergent delivery amount or the delivery time has reached further comprises: the washing machine (20) determining whether the water inlet is completed, and determining that the water inlet is completed. Start washing and judge whether the influent water is not finished, and continue to judge whether the influent water is completed.
The control method of the external detergent dispensing device according to any one of claims 7 to 9, wherein the washing machine end knows the amount of detergent required, and the washing machine end knows the required amount of detergent by weighing the laundry.
The control method of the external detergent dispensing device according to any one of claims 7 to 9, wherein the washing machine (20) controls the flow of water by regular intervals in a detergent dispensing instruction The delivery side issues a detergent delivery command or stops the delivery command.
The control method of the external detergent dispensing device according to any one of claims 7 to 9, wherein the washing machine (20) issues the detergent dispensing instruction and the stop delivery instruction in a manner of one second during the water inflow process. At intervals, the washing machine inlet valve (5) is continuously cut three times.
A washing machine using the external detergent dispensing device according to any one of claims 1 to 6 or the control method of the external detergent dispensing device according to any one of claims 7 to 12.