Control methods for washing equipment and washing equipment

Abstract

This invention relates to the field of washing equipment technology, specifically providing a washing device that addresses the problem that existing washing devices, which rely on weighing clothes to select the water amount, are prone to misjudgment due to the varying degrees of dryness of the clothes, thus affecting the washing effect. The washing device of this invention includes a sealed flexible washing bladder and a pump connected to the flexible washing bladder. The device also includes an air volume detection unit. The control method includes: controlling the pump to expel gas from the flexible washing bladder until the clothes inside are compressed; controlling the air volume detection unit to obtain the volume of air drawn out by the pump; calculating the volume of clothes in the flexible washing bladder based on its rated volume and the volume of air drawn out by the pump; and adding the corresponding amount of water based on the volume of the clothes. The pump draws in air, deforming the flexible washing bladder and compressing the clothes, expelling the air to determine the volume of the clothes, thereby allowing the addition of the appropriate amount of water.

Description

Technical Field

[0001] This invention relates to the field of washing equipment technology, specifically providing a control method for washing equipment and washing equipment. Background Technology

[0002] As people's living standards improve, washing equipment is entering more and more households, and people's functional requirements for washing equipment are also increasing. Existing technologies include washing equipment for small items of clothing, such as underwear and socks. Because these small items are washed frequently and require high cleanliness, to avoid mixing them with larger items, the applicant mentioned a washing device in application number 202110602571.2, filed on May 31, 2021. This device uses a flexible tub to hold the clothes and squeezes the tub to achieve washing and dehydration. However, currently, small washing equipment uses a fixed amount of water entering the flexible tub during washing. When the load is large, there is insufficient water to fully soak the clothes; while when the load is small, there is too much water, causing the clothes to drift with the water flow during squeezing, resulting in substandard squeezing effect.

[0003] Existing technology proposes a solution that involves setting a weighing scale at the bottom of a flexible drum to weigh the clothes and then selecting the amount of water to add. However, this method is easily affected by the dryness or wetness of the clothes and may lead to misjudgment. For example, wet underwear can weigh two to three times as much as dry clothes, causing the amount of water to be added to far exceed the reasonable range, thus affecting the washing effect of the clothes.

[0004] Accordingly, there is a need in the field for a new control method for washing equipment to address the problem that existing washing equipment, which selects the amount of water to add by weighing the clothes, is easily misjudged due to the dryness or wetness of the clothes, thus affecting the washing effect. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem that existing washing equipment, when selecting the amount of water to add by weighing the clothes, is easily affected by the dryness or wetness of the clothes, which can lead to misjudgment and thus affect the washing effect.

[0006] In a first aspect, the present invention provides a control method for a washing device, the washing device comprising a sealed flexible washing bladder and a pump body connected to the flexible washing bladder, the washing device further comprising an air volume detection unit, the control method comprising:

[0007] The pump body is controlled to expel the gas from the flexible washing bag until the clothes inside the flexible washing bag are compressed.

[0008] The air volume detection unit is controlled to obtain the volume of air drawn out by the pump body;

[0009] The volume of clothes in the flexible washing bag is calculated based on the rated volume of the flexible washing bag and the volume of air sucked out by the pump body.

[0010] Add the corresponding amount of water based on the volume of the garment.

[0011] In the preferred embodiment of the control method for the above-mentioned washing equipment, the air volume detection unit is an air flow meter, and the method for determining that "the clothes in the flexible washing bag are in a compressed state" includes:

[0012] Obtain the instantaneous flow rate of gas discharged from the flexible washing bag;

[0013] When the instantaneous flow rate value is less than or equal to the first set value, it is determined that the clothes in the flexible washing bag are in a compressed state.

[0014] In the preferred embodiment of the control method for the aforementioned washing equipment, after the step of "determining that the clothes inside the flexible washing bag are in a compressed state when the instantaneous flow rate value is ≤ a first set value", the control method further includes:

[0015] Control the pump body to shut down.

[0016] In a preferred embodiment of the control method for the aforementioned washing equipment, before the step of "adding the corresponding amount of water according to the volume of the clothes", the control method further includes:

[0017] When the volume of the laundry is greater than or equal to a second set value, the washing equipment is controlled to alarm.

[0018] In the preferred embodiment of the control method for the above-mentioned washing equipment, the sealed flexible washing bladder includes a flexible inner tub and a top cover. A flexible outer tub is also provided on the outside of the flexible inner tub. A first sealing cavity is formed by the inner side of the top cover and the flexible inner tub. A second sealing cavity is formed by the outer side of the top cover, the flexible inner tub, and the flexible outer tub. The washing equipment also includes a first air pipe and a second air pipe. One end of the first air pipe is connected to the first sealing cavity, and the other end is connected to the atmosphere. One end of the second air pipe is connected to the first air pipe through a diversion valve, and the other end is connected to the second sealing cavity. The diversion valve is configured to selectively connect either the first air pipe or the second air pipe to the atmosphere.

[0019] Before the step of "controlling the pump to expel the gas from the flexible washing bag until the clothes inside the flexible washing bag are compressed", the control method further includes:

[0020] The operating state of the diversion valve is controlled so that the first air pipe is not connected to the atmosphere, while the second air pipe is connected to the atmosphere.

[0021] In the preferred embodiment of the control method for the aforementioned washing equipment, after the step of "adding the corresponding amount of water according to the volume of the clothes", the control method further includes:

[0022] The operating state of the diversion valve is controlled so that the first air pipe is connected to the atmosphere, while the second air pipe is not connected to the atmosphere.

[0023] In the preferred embodiment of the control method for the aforementioned washing equipment, after the step of "controlling the operating state of the diversion valve so that the first air pipe is connected to the atmosphere and the second air pipe is not connected to the atmosphere", the control method further includes:

[0024] The washing equipment is controlled to add water into the flexible inner tub.

[0025] In a preferred embodiment of the control method for the aforementioned washing equipment, the washing equipment further includes a squeezing section disposed on the outside of the flexible outer tub; the squeezing section is configured to perform reciprocating squeezing on the flexible outer tub; after the step of "controlling the washing equipment to add water into the flexible inner tub", the control method further includes:

[0026] The extrusion section is controlled to reciprocate and extrude on the flexible outer barrel.

[0027] In a preferred embodiment of the control method for the aforementioned washing equipment, after the step of "controlling the squeezing part to reciprocate and squeeze on the flexible outer tub", the control method further includes:

[0028] Control the operation of the diversion valve so that the first air pipe is not connected to the atmosphere, while the second air pipe is connected to the atmosphere;

[0029] Control the drainage of the pump body.

[0030] The present invention also provides a washing device, which is configured to perform the control method of the washing device described in any of the above technical solutions.

[0031] Those skilled in the art will understand that, in the technical solution of the present invention, the washing device includes a sealed flexible washing bladder and a pump body connected to the flexible washing bladder, and the washing device is also equipped with an air volume detection unit. The control method of the washing device includes:

[0032] The pump body is controlled to expel the air from the flexible washing bladder until the clothes inside the flexible washing bladder are compressed.

[0033] The air volume detection unit controls the acquisition of the volume of air drawn out by the pump body;

[0034] The volume of clothes in the flexible washing bladder is calculated based on the rated volume of the flexible washing bladder and the volume of air sucked out by the pump.

[0035] Add the appropriate amount of water based on the volume of the clothing.

[0036] When using the above technical solution, the washing device of the present invention first discharges the gas from the flexible washing bag through the pump body, while the flexible washing bag contracts and squeezes the clothes until the clothes in the flexible washing bag are in a compressed state; then, the air detection unit is controlled to obtain the volume of the gas discharged from the flexible washing bag; as those skilled in the art know, the rated volume of the flexible washing bag is known, and then the volume of the clothes is obtained by subtracting the volume of the air sucked out by the pump body from the rated volume of the flexible washing bag; then, the corresponding water intake is added according to the volume of the clothes, wherein the corresponding water intake can be obtained by looking up a table based on the most suitable water intake for different volumes of clothes obtained after actual experiments, or it can be obtained by calculation formula, or it can be a set multiple of the volume of the clothes, etc., as long as the water intake is at the water volume required for reasonable washing of the clothes. The inventors discovered in experiments that the volume change between dry and dehydrated clothes is minimal. Because dehydration cannot completely dry the clothes, the weight of dry clothes differs from that of dehydrated clothes by two to three times. This invention, by obtaining the volume of the clothes to determine the load, is significantly more accurate than methods that rely on weight. Even with wet clothes, the water can be squeezed out by the flexible washing bladder, allowing for the determination of the spun-dry volume and thus improving the accuracy of load measurement. This invention cleverly utilizes the deformable nature of the flexible washing bladder. Air is drawn in by the pump, deforming the bladder to squeeze the clothes and expel the air. The volume of the clothes is then calculated. The simple structure improves the accuracy of load measurement, allowing for the addition of appropriate water volume and enhancing the washing effect. The entire system eliminates the need for any additional volume measuring devices inside the flexible washing bladder and avoids inaccuracies caused by uncertain clothing positions, achieving both cost reduction and increased accuracy. Attached Figure Description

[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0038] Figure 1 This is a cross-sectional structural diagram of the washing device of the present invention when the pump body is not working;

[0039] Figure 2 This is a cross-sectional structural diagram of the washing device of the present invention in the state of clothes being compressed when the pump body is working;

[0040] Figure 3 This is a schematic diagram of the extrusion section of the washing device of the present invention;

[0041] Figure 4 This is a flowchart of the main steps of the washing device of the present invention;

[0042] Figure 5 This is a flowchart illustrating one embodiment of the washing device of the present invention.

[0043] Figure 6 This is a flowchart illustrating another embodiment of the washing device of the present invention.

[0044] List of reference numerals in the attached diagram:

[0045] 1. Flexible washing bladder; 11. Flexible inner tub; 12. Top cover; 13. Flexible outer tub; 14. First sealing cavity; 15. Second sealing cavity; 2. Pump body; 3. Air volume detection unit; 4. First air pipe; 5. Second air pipe; 6. Diverter valve; 7. Squeezing section; 71. Drive device; 72. Transmission shaft; 73. Cam; 74. Squeezing block. Detailed Implementation

[0046] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0047] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] like Figure 1 , Figure 2 , Figure 4As shown, to address the problem that existing washing equipment, which selects the water amount by weighing the clothes, is easily misjudged due to the varying degrees of dryness of the clothes, thus affecting the washing effect, the control method of the washing equipment of this invention includes a sealed flexible washing bladder 1 and a pump body 2 connected to the flexible washing bladder 1. An air volume detection unit 3 is also provided on the washing equipment. The control method of the washing equipment includes:

[0050] Step S10: Control the pump to expel the gas from the flexible washing bag until the clothes inside the flexible washing bag are compressed.

[0051] Step S11: Control the air volume detection unit to obtain the volume of air drawn out by the pump body;

[0052] Step S12: Calculate the volume of clothes in the flexible washing bladder based on the rated volume of the flexible washing bladder and the volume of air sucked out by the pump.

[0053] Step S13: Add the corresponding amount of water according to the volume of the clothes.

[0054] The advantages of the above-described setup are as follows: The washing device of the present invention first discharges the gas from the flexible washing bag 1 through the pump body 2, while the flexible washing bag 1 contracts and squeezes the clothes until the clothes in the flexible washing bag 1 are in a compressed state; then, the air detection unit is controlled to obtain the volume of the gas discharged from the flexible washing bag 1; as those skilled in the art know, the rated volume of the flexible washing bag 1 is known, and then the volume of the clothes is obtained by subtracting the volume of the air sucked out by the pump body 2 from the rated volume of the flexible washing bag 1; then, the corresponding water intake is added according to the volume of the clothes, wherein the corresponding water intake can be obtained by looking up a table based on the most suitable water intake for different volumes of clothes obtained after actual experiments, or by calculation formula, or by a set multiple of the volume of the clothes, etc., as long as the water intake is at the water volume required for reasonable washing of the clothes. The inventors discovered in experiments that the volume change between dry and dehydrated clothes is minimal, while the weight of dry and dehydrated clothes can differ by two to three times. This invention, by obtaining the volume of the clothes to determine the load, is significantly more accurate than methods that rely on weight. Even with wet clothes, the water can be squeezed out by the flexible washing bladder 1, allowing for the determination of the dehydrated clothes' volume, thus improving the accuracy of load measurement. This invention cleverly utilizes the deformable nature of the flexible washing bladder 1. Air is drawn in by the pump 2, causing the flexible washing bladder 1 to deform and squeeze the clothes, expelling the air from within. The volume of the clothes is then calculated. The simple structure improves the accuracy of load measurement, allowing for the addition of appropriate water volume and enhancing the washing effect. The entire system eliminates the need for any additional volume measuring devices inside the flexible washing bladder, and avoids inaccuracies caused by uncertain clothing positions. This achieves both cost reduction and increased accuracy.

[0055] like Figure 2 , Figure 5 As shown, in one possible implementation, the air volume detection unit 3 is an air flow meter, and the method for determining that "the clothes in the flexible washing bag are in a compressed state" in step S10 includes the following steps:

[0056] Step S111: Obtain the instantaneous flow rate of gas discharged from the flexible washing bag;

[0057] Step S112: When the instantaneous flow rate value is less than or equal to the first set value, it is determined that the clothes in the flexible washing bag are in a compressed state.

[0058] Next, when it is determined that the clothes in the flexible washing bladder 1 are in a compressed state, step S14 is executed: control the pump to shut down.

[0059] The advantages of the above setting method are as follows: First, the instantaneous flow rate of the air discharged from the flexible washing bag 1 through the air flow meter is detected (the instantaneous flow rate is the volume of air flowing through the flow meter within a fixed unit time length). As the flexible washing bag 1 deforms and compresses the clothes, the instantaneous flow rate of the discharged air will become smaller and smaller. When the instantaneous flow rate is less than or equal to the first set value, it indicates that the deformation of the flexible washing bag 1 has reached its limit, and the clothes are determined to be in a compressed state. Then, when it is determined that the clothes in the flexible washing bag 1 are in a compressed state, the pump body 2 is controlled to close, and the flexible washing bag 1 will no longer continue to contract and squeeze the clothes.

[0060] like Figure 6 As shown, in one possible implementation, after step S12 "calculating the volume of clothes in the flexible washing bladder based on the rated volume of the flexible washing bladder and the volume of air sucked out by the pump body", the control method further includes:

[0061] Step S21: When the volume of the laundry is greater than or equal to the second set value, control the washing equipment to sound an alarm;

[0062] Step S22: When the volume of the clothing is less than the second set value, add the corresponding amount of water according to the volume of the clothing.

[0063] The advantages of the above setting method are as follows: when the calculated volume of the clothes in the flexible washing bladder 1 is greater than or equal to the second preset value, it indicates that the volume of the clothes is too large and exceeds the maximum load of the flexible washing bladder 1. The washing equipment is then controlled to alarm, thereby preventing damage to the washing equipment due to the excessive volume of the clothes exceeding the load of the washing equipment. When the volume of the clothes is less than the second preset value, it indicates that the volume of the clothes is within the maximum load of the washing equipment, and the corresponding amount of water is added according to the volume of the clothes.

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, in one possible implementation, the sealed flexible washing bladder 1 includes a flexible inner tub 11 and a top cover 12. A flexible outer tub 13 is also provided on the outside of the flexible inner tub 11. A first sealing cavity 14 is formed by the inner sides of the top cover 12 and the flexible inner tub 11. A second sealing cavity 15 is formed by the outer sides of the top cover 12, the flexible inner tub 11, and the flexible outer tub 13. The washing device also includes a first air pipe 4 and a second air pipe 5. One end of the first air pipe 4 is connected to the first sealing cavity 14, and the other end is connected to the atmosphere. One end of the second air pipe 5 is connected to the first air pipe 4 through a diversion valve 6, and the other end is connected to the second sealing cavity 15. The diversion valve 6 is configured to selectively connect either the first air pipe 4 or the second air pipe 5 to the atmosphere.

[0065] The washing equipment also includes a squeezing section 7, which is disposed on the outside of the flexible outer tub 13. The squeezing section 7 is configured to reciprocate and squeeze the flexible outer tub 13. In one embodiment, the squeezing section 7 includes a drive device 71, a transmission shaft 72, and a plurality of helical protrusions 73 sequentially fixed on the transmission shaft 72. The output end of the drive device 71 is connected to the transmission shaft 72 and can drive the cams 73 to rotate. The squeezing section 7 also includes a plurality of slidably disposed squeezing blocks 74, which are disposed one-to-one with the cams 73 and are disposed between the cams 73 and the flexible outer tub 13. When the cams 73 rotate, they push the squeezing blocks 74 to squeeze the flexible outer tub 13 sequentially.

[0066] Control methods for washing equipment also include:

[0067] Before step S10, "control the pump to discharge the gas from the flexible washing bag until the clothes in the flexible washing bag are compressed", step S20 is executed: control the operation of the diversion valve so that the first air pipe is not connected to the atmosphere and the second air pipe is connected to the atmosphere.

[0068] The advantages of the above setting method are: controlling the operation of the diversion valve 6 so that the first air pipe 4 is not connected to the atmosphere and the second air pipe 5 is connected to the atmosphere, thereby sealing the first sealing cavity 14 and connecting the second sealing cavity 15 to the atmosphere, so that only the flexible inner tub 11 gradually contracts and squeezes the clothes when it is subjected to suction.

[0069] After step S22, "When the volume of the clothing is less than the second set value, add the corresponding amount of water according to the volume of the clothing", the control method includes the following steps:

[0070] Step S23: Control the operation of the diversion valve so that the first air pipe is connected to the atmosphere and the second air pipe is not connected to the atmosphere;

[0071] Step S24: Control the washing equipment to add water into the flexible inner tub;

[0072] Step S25: Control the extrusion section to reciprocate and extrude on the flexible outer barrel;

[0073] Step S26: Control the operation of the diversion valve so that the first air pipe is connected to the atmosphere and the second air pipe is not connected to the atmosphere;

[0074] Step S27: Control the pump body to drain water.

[0075] The advantages of the above setting method are as follows: when the calculated volume of the clothes is less than the second set value, the operation of the diversion valve 6 is controlled to make the first air pipe 4 connected to the atmosphere and the second air pipe 5 not connected to the atmosphere, thereby making the first sealed cavity 14 connected to the atmosphere, and air enters the flexible inner tub 11, which in turn causes the flexible inner tub 11 in the contracted state to gradually return to its original shape. Then, the washing equipment is controlled to add water corresponding to the volume of the clothes into the flexible inner tub 11. Then, the squeezing part 7 is controlled to repeatedly squeeze the clothes on the flexible outer tub 13 to wash them, so that the clothes in the flexible inner tub 11 are continuously squeezed, thereby removing the stains. During the extrusion process, the first sealing chamber 14 is connected to the atmosphere, which in turn connects the flexible inner barrel 11 to the atmosphere. This prevents the air in the flexible inner barrel 11 from being trapped and unable to move during extrusion, thus affecting the extrusion effect. The second sealing chamber 15 is sealed to prevent gas from entering. The extrusion block 74 returns to its original position, and the flexible outer barrel 13 returns to its original unextruded state. However, the flexible inner barrel 11 does not return to its original state in time. The design of the second sealing chamber 15 being in a sealed state during the extrusion process is equivalent to an airbag. The outer wall of the flexible inner barrel 11 and the inner wall of the flexible outer barrel 13 are equivalent to the two sides of the airbag, thus avoiding frequent contact between the flexible outer barrel 13 and the flexible inner barrel 11.

[0076] After the squeezing is completed, the operation of the diversion valve 6 is controlled so that the first air pipe 4 is not connected to the atmosphere, while the second air pipe 5 is connected to the atmosphere. This keeps the flexible inner tub 11 closed and the second sealing cavity 15 connected to the atmosphere. Then, the pump body 2 is controlled to drain the water from the flexible washing bag 1. During the drainage process, because the flexible inner tub 11 is closed, it is subjected to the suction of the pump body 2 and contracts to squeeze the clothes, thereby separating and draining the water from the clothes, achieving the dehydration effect. At this time, because the flexible outer tub 13 is connected to the atmosphere, it will not contract as well, reducing the workload of the pump body 2.

[0077] Finally, it should be noted that although the present invention is described using a washing device for washing clothes as an example, the washing device of the present invention can obviously also be other devices, such as a sock washing machine.

[0078] It should be noted that the above embodiments are merely used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0079] For example, in an alternative embodiment, the flexible washing bladder 1 can be connected to the pump body 2 for venting through the water inlet or the drain outlet. Other pipes can also be provided on the flexible washing bladder 1 to connect to the pump body 2 for venting. Therefore, the connection position of the flexible washing bladder 1 and the pump body 2 is not limited, as long as the flexible washing bladder 1 and the pump body 2 can be connected. These do not deviate from the principle of the present invention and therefore all fall within the protection scope of the present invention.

[0080] For example, in an alternative embodiment, the air flow meter is installed in the pipeline connecting the flexible washing bag 1 and the pump body 2, or it can be installed at the inlet or outlet of the flexible washing bag 1. Alternatively, an air collection device (not shown in the figure) can be installed at the exhaust end of the pump body 2, and the air flow meter can be installed in the air collection device. Therefore, there are no restrictions on the installation position of the air flow meter, as long as the air flow meter can detect the volume of air discharged from the flexible washing bag 1. These do not deviate from the principle of the present invention and therefore all fall within the protection scope of the present invention.

[0081] For example, in an alternative embodiment, the pump body 2 can be a combination of an air pump and a water pump, connected to the flexible washing bag 1 via two separate pipes. Alternatively, the pump body 2 can also be a pump body that can both vent air and drain water, connected to the flexible washing bag 1 via a single pipe. These methods do not deviate from the principles of the present invention and therefore fall within the protection scope of the present invention.

[0082] For example, in an alternative embodiment, the extrusion part 7 is provided with an air bladder (not shown in the figure), and an extrusion plate (not shown in the figure) is provided on the air bladder. The extrusion plate is used to extrude the flexible outer barrel 13 by inflating the air bladder. Therefore, there are no restrictions on the specific structure of the extrusion part 7, as long as the extrusion part 7 can extrude the flexible outer barrel 13. These are not contrary to the principle of the present invention, and therefore all fall within the protection scope of the present invention.

[0083] For example, in an alternative embodiment, the air volume detection unit 3 can be an air flow meter or an ultrasonic gas flow meter. Therefore, the specific type of the air volume detection unit 3 is not limited, as long as the air detection unit 3 can detect the volume of air discharged from the flexible washing bag 1. These do not deviate from the principle of the present invention and therefore all fall within the protection scope of the present invention.

[0084] In addition, the present invention also provides a washing device having the control method for the washing device described in any of the above embodiments.

[0085] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control method of a washing apparatus, characterized by, The washing device comprises a closed flexible washing bag and a pump body connected with the flexible washing bag, and an air volume detection unit is further arranged on the washing device, and the control method comprises: controlling the pump body to discharge the gas in the flexible washing bag until the clothes in the flexible washing bag are in a compact state; controlling the air volume detection unit to obtain the volume of the air sucked by the pump body; calculating the volume of the clothes in the flexible washing bag according to the rated volume of the flexible washing bag and the volume of the air sucked by the pump body; adding a corresponding water inflow according to the volume of the clothes.

2. The control method of a washing apparatus according to claim 1, characterized by, The air volume detection unit is an air flow meter, and the method of judging that the clothes in the flexible washing bag are in a compact state comprises: obtaining the instantaneous flow value of the gas discharged from the flexible washing bag; when the instantaneous flow value is less than or equal to a first set value, it is determined that the clothes in the flexible washing bag are in a compact state.

3. The control method of a washing apparatus according to claim 2, characterized by, After the step of "when the instantaneous flow value is less than or equal to a first set value, it is determined that the clothes in the flexible washing bag are in a compact state", the control method further comprises: controlling the pump body to be closed. 4.The control method of a washing apparatus according to claim 1, characterized in that, Before the step of "adding a corresponding water inflow according to the volume of the clothes", the control method further comprises: when the volume of the clothes is greater than or equal to a second set value, controlling the washing device to alarm. 5.The control method of a washing apparatus according to claim 1, characterized in that, The closed flexible washing bag comprises a flexible inner drum and an upper cover, and a flexible outer drum is further arranged on the outer side of the flexible inner drum, a first sealed cavity is formed by the upper cover and the inner side of the flexible inner drum, a second sealed cavity is formed by the upper cover, the outer side of the flexible inner drum and the inner side of the flexible outer drum, and the washing device further comprises a first air pipe and a second air pipe, one end of the first air pipe is in communication with the first sealed cavity, the other end is in communication with the atmosphere, one end of the second air pipe is in communication with the first air pipe through a shunt valve, and the other end is in communication with the second sealed cavity, and the shunt valve is arranged to selectively realize the communication between the first air pipe or the second air pipe and the atmosphere. Before the step of "controlling the pump body to discharge the gas in the flexible washing bag until the clothes in the flexible washing bag are in a compact state", the control method further comprises: controlling the operating state of the shunt valve to make the first air pipe not in communication with the atmosphere and the second air pipe in communication with the atmosphere.

6. The control method of a washing apparatus according to claim 5, characterized by, After the step of "adding a corresponding water inflow according to the volume of the clothes", the control method further comprises: controlling the operating state of the shunt valve to make the first air pipe in communication with the atmosphere and the second air pipe not in communication with the atmosphere.

7. The control method of a washing apparatus according to claim 6, characterized by, After the step of "controlling the operating state of the shunt valve to make the first air pipe in communication with the atmosphere and the second air pipe not in communication with the atmosphere", the control method further comprises: controlling the washing device to add water into the flexible inner drum.

8. The control method of a washing apparatus according to claim 7, characterized by, The washing device further comprises a squeezing part arranged on the outer side of the flexible outer drum, the squeezing part is arranged to be capable of reciprocally squeezing the flexible outer drum, and after the step of "controlling the washing device to add water into the flexible inner drum", the control method further comprises: controlling the squeezing part to reciprocally squeeze the flexible outer drum.

9. The control method of a washing apparatus according to claim 8, characterized by, After the step of "controlling the reciprocating extrusion of the extrusion part on the flexible outer tub", the control method further comprises: controlling the operating state of the shunt valve to make the first air pipe not communicate with the atmosphere, and the second air pipe communicate with the atmosphere; controlling the pump body to drain water.

10. A washing apparatus characterized by comprising: The washing equipment is arranged to be capable of executing the control method of the washing equipment according to any one of claims 1-9.

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