A barrel-to-barrel waterless washing machine drainage device, washing machine and control method

Abstract

The embodiment of the present application discloses a kind of inter-barrel waterless washing machine drainage device, washing machine and control method, the device includes: drainage structure, airtight chamber multi-way valve and liquid level detection structure;The airtight chamber multi-way valve is communicated with the outer barrel of washing machine, first airtight chamber and second airtight chamber are equipped in the airtight chamber multi-way valve;The first airtight chamber is communicated with the liquid level detection structure, and the drainage structure is connected with the airtight chamber multi-way valve.By implementing the device of the embodiment of the present application, the drainage flow can be improved, so that the washing water is discharged clean.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to a waterless washing machine drainage device between barrels, a washing machine and a control method. Background Art

[0002] With the continuous development of washing machine technology, washing machines have become increasingly large-capacity. As washing machines gradually become larger-capacity, the overall size of the washing machine will inevitably increase. At the same time, in existing washing machines, water is distributed in the washing tub and the outer tub during washing, that is, water is also distributed between the outer tub and the washing tub, resulting in a large amount of water consumption, causing a waste of water resources. In addition, dirt is easily retained between the outer tub and the washing tub, thereby breeding bacteria. Because there is water distributed between the outer tub and the washing tub, a large amount of detergent is used, resulting in a waste of detergent resources and being unfavorable for cost saving. Therefore, it is necessary to drain the washing water in the washing machine.

[0003] Chinese patent CN201910212027.X discloses a washing machine with a drainage chamber below the washing tub that is connected to the interior of the washing tub. Washing water is discharged through the drainage chamber. However, this drainage method has the problem of poor drainage and cannot ensure that the washing water is discharged cleanly.

[0004] Therefore, it is necessary to design a new device to improve the drainage fluidity and thus discharge the washing water cleanly. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a tub-to-tub waterless washing machine drainage device, a washing machine and a control method.

[0006] In order to solve the above technical problems, the object of the present invention is achieved through the following technical solutions: providing a drainage device for a waterless washing machine between barrels, characterized in that it includes: a drainage structure, an airtight chamber multi-way valve and a liquid level detection structure; the airtight chamber multi-way valve is connected to the outer barrel of the washing machine, and a first airtight chamber and a second airtight chamber are provided in the airtight chamber multi-way valve; the first airtight chamber is connected to the liquid level detection structure, and the drainage structure is connected to the airtight chamber multi-way valve.

[0007] A further technical solution is: the first airtight chamber is connected to the liquid level detection structure through a first hose.

[0008] A further technical solution is: the liquid level detection structure includes a liquid level sensor.

[0009] A further technical solution is: the second airtight chamber is connected to a second hose, and the height of one end of the second hose away from the second airtight chamber is higher than the height of the inner drum of the washing machine.

[0010] A further technical solution is as follows: the multi-way valve in the airtight chamber is a two-way valve in the airtight chamber whose switch is controlled by electromagnetic.

[0011] In addition, the technical problem to be solved by the present invention is to provide a washing machine, including an inner drum, an outer barrel and the above-mentioned inter-barrel waterless washing machine drainage device, wherein the inner drum is located in the outer barrel, and the outer barrel is provided with the drainage structure.

[0012] A further technical solution is: the lower end of the inner tube is connected to a water shield, the lower end of the water shield is sealed to the bottom of the outer barrel, and the water shield is connected to the second airtight chamber through a connecting pipe.

[0013] A further technical solution is as follows: a water outlet is provided at the bottom of the outer barrel, the water outlet is connected to a water outlet pipe, and the water outlet pipe is communicated with the first airtight chamber.

[0014] In addition, the technical problem to be solved by the present invention is to provide a method for controlling the drainage device of an inter-tub waterless washing machine, comprising:

[0015] When the washing machine is in the washing stage, water is added according to the preset water level frequency, the first airtight chamber is opened, and the second airtight chamber is closed; when the washing machine is in the dehydration stage, the first and second airtight chambers are opened until the liquid level detection structure detects that the water level frequency reaches the no-load value, and the inner drum vibration process is executed.

[0016] A further technical solution is as follows: when the washing machine is in the washing stage, water is introduced according to a preset water level frequency, the first airtight chamber is opened, and the second airtight chamber is closed; when the washing machine is in the dehydration stage, the first and second airtight chambers are opened until the liquid level detection structure detects that the water level frequency reaches the no-load value, and before the inner drum vibration process is executed, the method further includes:

[0017] The type of load in the washing machine is recorded by weighing to determine the stage of the washing machine.

[0018] The beneficial effects of the present invention compared with the prior art are: the present invention balances the air pressure in the outer barrel by setting an airtight chamber multi-way valve and a liquid level detection structure, utilizing the opening and closing of the first airtight chamber and the second airtight chamber in the airtight chamber multi-way valve, ensuring the accuracy of the liquid level detection structure, avoiding the obstruction of air pressure to drainage, and improving the drainage smoothness, thereby discharging the washing water cleanly.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a tub-to-tub waterless washing machine drainage device provided by an embodiment of the present invention;

[0022] Figure 2 A flow chart of a method for controlling a drainage device of an inter-tub waterless washing machine provided by an embodiment of the present invention;

[0023] Description of the symbols in the figure:

[0024] 1. Outer barrel; 2. Inner barrel; 3. Impeller; 4. Circular heating ring; 5. Water shield; 6. Water outlet; 7. Water outlet pipe; 71. Connecting pipe; 8. Drain pipe; 9. Airtight chamber multi-way valve; 10. First airtight chamber; 11. Second airtight chamber; 12. First hose; 13. Second hose; 14. Liquid level sensor. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0027] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0029] See also Figure 1 , Figure 1 This is a structural schematic diagram of a tub-to-tub waterless washing machine drainage device provided in an embodiment of the present invention. The device can be used in washing machines with drainage devices such as drum washing machines. With the help of structures such as the airtight chamber multi-way valve 9, the air pressure inside and outside the washing machine is balanced to improve the drainage smoothness.

[0030] See also Figure 1 The above-mentioned inter-tub waterless washing machine drainage device includes: an airtight chamber multi-way valve 9 and a liquid level detection structure; the airtight chamber multi-way valve 9 is connected to the outer tub 1 of the washing machine, and a first airtight chamber 10 and a second airtight chamber 11 are provided in the airtight chamber multi-way valve 9; the first airtight chamber 10 is connected to the liquid level detection structure, and the drainage structure is connected to the airtight chamber multi-way valve 9.

[0031] In this embodiment, the airtight chamber multi-way valve 9 is combined with the liquid detection structure to have the function of liquid level detection and balance the lower end of the inner drum 2 with the external atmospheric pressure. In the drainage and dehydration links, the airtight chamber multi-way valve 9 can ensure the accuracy of the liquid detection structure. When the liquid detection structure detects that the water level frequency reaches the no-load value, the no-load value of the water level frequency is: there is no residual water value inside the washing machine, which is the data set in advance for the washing machine, indicating that the water in the current inner drum 2 has been drained and the inner drum 2 vibration process can be executed to perform the dehydration operation. The setting of the airtight chamber multi-way valve 9 and the liquid level detection structure can balance the internal and external air pressure and improve the drainage smoothness.

[0032] Specifically, the first airtight chamber 10 and the second airtight chamber 11 are not connected to each other, so as to avoid the air in the pipeline from flowing around and affecting the accuracy of the liquid level sensor 14 .

[0033] In one embodiment, see Figure 1 The first airtight chamber 10 is connected to the liquid level detection structure through a first hose 12 .

[0034] In one embodiment, see Figure 1 The above-mentioned liquid level detection structure includes a liquid level sensor 14.

[0035] In one embodiment, see Figure 1 The second airtight chamber 11 is connected to a second hose 13 , and the height of one end of the second hose 13 away from the second airtight chamber 11 is higher than the height of the inner drum 2 of the washing machine.

[0036] In order to prevent the water level in the inner drum 2 from flowing back out of the washing machine, the opening end of the second airtight chamber 11 is higher than the height of the inner drum 2 by a height h, where h>0.

[0037] In this embodiment, the airtight chamber multi-way valve 9 is not limited to an airtight chamber two-way valve controlled by electromagnetic switching. The airtight chamber multi-way valve 9 is arranged on the outer wall of the outer barrel 1 and has a two-chamber structure. The two chambers are not interconnected. The airtight chamber multi-way valve 9 is used to store gas. The airtight chamber multi-way valve 9 is an electromagnetically controlled waterway opening and closing device that can be opened and closed by turning the power on and off.

[0038] The above-mentioned inter-barrel waterless washing machine drainage device, by setting an airtight chamber multi-way valve 9 and a liquid level detection structure, utilizes the opening and closing of the first airtight chamber 10 and the second airtight chamber 11 in the airtight chamber multi-way valve 9 to balance the air pressure in the outer barrel 1, ensure the accuracy of the liquid level detection structure, avoid the obstruction of air pressure to drainage, and improve the drainage smoothness, so as to discharge the washing water cleanly.

[0039] In one embodiment, see Figure 1 , also provides a washing machine, including an inner drum 2, an outer barrel 1 and the above-mentioned inter-barrel waterless washing machine drainage device, the inner drum 2 is located in the outer barrel 1, and the outer barrel 1 is provided with the above-mentioned drainage structure.

[0040] The lower end of the inner tube 2 is connected to a water shield 5 , the lower end of the water shield 5 is sealed with the bottom of the outer barrel 1 , and the water shield 5 is connected to the second airtight chamber 11 through a connecting pipe 71 .

[0041] A water shield 5 is provided at the lower end of the inner barrel 2, the lower end of which is sealedly connected to the bottom of the outer barrel 1. The inner barrel 2 is rotatably sealed with the water shield 5. Since the water shield 5 is connected to the second airtight chamber 11 via a connecting pipe 71, the airtight chamber multi-way valve 9 has the functions of liquid level detection and balancing the water shield 5 with the external atmospheric pressure, making the entire device compact and simple.

[0042] In one embodiment, see Figure 1 The bottom of the outer barrel 1 is provided with a water outlet 6 , the water outlet 6 is connected to a water outlet pipe 7 , and the water outlet pipe 7 is communicated with the first airtight chamber 10 .

[0043] In one embodiment, see Figure 1 One end of the water outlet pipe 7 is connected to a drain pipe 8.

[0044] In one embodiment, a pulsator 3 is provided in the inner cylinder 2 , and a circular heating ring 4 is provided on the inner cylinder 2 .

[0045] When the washing machine is performing a normal washing program, the weight of the load is recorded through the weighing mode, and the stage of the current program is determined at the same time.

[0046] When the washing machine is in the washing stage, that is, the water filling stage, after the load weight is identified, the washing machine opens the water inlet valve and fills in water according to the designed water level frequency. At this time, the first airtight chamber 10 is opened and the second airtight chamber 11 is closed. The air will be squeezed into the airtight chamber two-way valve. Since the first airtight chamber 10 is opened and the second airtight chamber 11 is closed, the air will only pass through the first airtight chamber 10 of the airtight chamber two-way valve and apply pressure to the liquid level sensor 14 through the first hose 12. Since the atmosphere will not pass through the second airtight chamber 11, it will not cause gas leakage, affecting the detection results of the liquid level sensor 14, thereby ensuring the accuracy of the detection of the liquid level sensor 14. When the liquid level sensor 14 detects that the water level frequency reaches the set value, the water inlet valve is closed, the water supply is stopped, and washing is carried out.

[0047] When the washing machine is in the dehydration stage, that is, not in the water filling stage, the first airtight chamber 10 is opened and the second airtight chamber 11 is opened. When the user starts the dehydration, the program records the drainage countdown, the drain valve is opened, and the water level frequency is detected to see if it reaches the no-load value. If it reaches the no-load value, it means that the water in the inner drum 2 has been drained, and the inner drum 2 rotation delay is turned on. When the delay time is not less than the set time, the inner drum 2 vibration process is carried out; when the delay time is less than the set time, the inner drum 2 rotation delay is continued.

[0048] Inner drum 2 vibration process: execute the inner drum 2 rotation delay program. After the delay time reaches ts, the inner drum 2 vibration program is executed. At this time, the motor starts. When the motor speed reaches n1, the principle of determining n1 is that the brake cannot hit the barrel. The brake is applied. This cycle is executed x times. The number of cycles can be determined based on the internal structure of the washing barrel and whether it is easy to trap water. If the internal structure of the washing barrel is complex and the lowest point is not at the drain outlet, the number of inner drum 2 vibration programs can be increased by yourself. After the number of cycles is reached, the inner drum 2 vibration process is exited and the normal dehydration process is carried out until the dehydration is completed.

[0049] In one embodiment, see Figure 2 , Figure 2 1 is a flow chart of a method for controlling a drainage device of an inter-tub waterless washing machine provided by an embodiment of the present invention; the method for controlling a drainage device of an inter-tub waterless washing machine includes:

[0050] S120. When the washing machine is in the washing stage, water is added according to the preset water level frequency, the first airtight chamber 10 is opened, and the second airtight chamber 11 is closed; when the washing machine is in the dehydration stage, the first airtight chamber 10 and the second airtight chamber 11 are opened until the water level frequency detected by the liquid level detection structure reaches the no-load value, and the inner drum 2 vibration process is executed.

[0051] In one embodiment, see Figure 2When the washing machine is in the washing stage, water is introduced according to a preset water level frequency, the first airtight chamber 10 is opened, and the second airtight chamber 11 is closed; when the washing machine is in the dehydration stage, the first airtight chamber 10 and the second airtight chamber 11 are opened until the water level detection structure detects that the water level frequency reaches the no-load value. Before executing the vibration process of the inner drum 2, the following steps are also included:

[0052] S110 , recording the type of load in the washing machine by weighing to determine the stage the washing machine is in.

[0053] It should be noted that, those skilled in the art can clearly understand that the specific implementation process of the control method of the above-mentioned inter-barrel waterless washing machine drainage device can refer to the corresponding description in the aforementioned inter-barrel waterless washing machine drainage device embodiment. For the convenience and conciseness of the description, it will not be repeated here.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A method for controlling the drainage device of a waterless washing machine between drums, characterized in that: include: When the washing machine is in the washing stage, water is added according to the preset water level frequency, the first airtight chamber is opened, and the second airtight chamber is closed; When the washing machine is in the dehydration stage, the first airtight chamber and the second airtight chamber are opened until the water level detection frequency detected by the liquid level detection structure reaches the no-load value, and the inner drum vibration process is executed; The drainage device for a waterless washing machine between drums includes: a drainage structure, an airtight chamber multi-way valve, and a liquid level detection structure; the airtight chamber multi-way valve is disposed on the outer wall of the outer drum; the airtight chamber multi-way valve is connected to the inner drum of the washing machine, and a first airtight chamber and a second airtight chamber are provided within the airtight chamber multi-way valve; the first airtight chamber is connected to the liquid level detection structure, and the drainage structure is connected to the airtight chamber multi-way valve; By setting up an airtight chamber multi-way valve and a liquid level detection structure, and utilizing the opening and closing of the first airtight chamber and the second airtight chamber in the airtight chamber multi-way valve, the air pressure at the lower end of the inner cylinder and the external atmospheric pressure are balanced to ensure the accuracy of the liquid level detection structure and avoid obstruction of drainage by air pressure.

2. The method for controlling the drainage device of a tub-to-tub waterless washing machine according to claim 1, characterized in that: The first airtight chamber is connected to the liquid level detection structure through a first hose.

3. The method for controlling the drainage device of a tub-to-tub waterless washing machine according to claim 1, characterized in that: The liquid level detection structure includes a liquid level sensor.

4. The method for controlling the drainage device of an inter-tub waterless washing machine according to claim 1, characterized in that: The second airtight chamber is connected to a second hose, and the height of one end of the second hose away from the second airtight chamber is higher than the height of the inner drum of the washing machine.

5. The method for controlling the drainage device of an inter-tub waterless washing machine according to claim 1, characterized in that: The multi-way valve of the airtight chamber is a two-way valve of the airtight chamber whose switch is controlled by electromagnetic.

6. The method for controlling the drainage device of an inter-tub waterless washing machine according to claim 1, characterized in that: When the washing machine is in the washing stage, water is introduced according to a preset water level frequency, the first airtight chamber is opened, and the second airtight chamber is closed; when the washing machine is in the dehydration stage, the first airtight chamber and the second airtight chamber are opened until the liquid level detection structure detects that the water level frequency reaches the no-load value, and before the inner drum vibration process is executed, the method further includes: The type of load in the washing machine is recorded by weighing to determine the stage of the washing machine.

7. A washing machine, characterized in that: A control method for the drainage device of an inter-tub waterless washing machine as described in any one of claims 1 to 6 is adopted.

8. The washing machine according to claim 7, characterized in that: The lower end of the inner cylinder is connected to a water shield, the lower end of the water shield is sealed with the bottom of the outer barrel, and the water shield is connected to the second airtight chamber through a connecting pipe.

9. The washing machine according to claim 8, characterized in that: A water outlet is provided at the bottom of the outer barrel, the water outlet is connected to a water outlet pipe, and the water outlet pipe is communicated with the first airtight chamber.

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