TW201945611A - washing machine - Google Patents

Abstract

The present invention includes a pressing unit, a suction pump, a water-removal path, an outside air introduction unit via which outside air is introduced, a gas-liquid separation unit that separates between suctioned cleaning water and the air, and a control unit. The gas-liquid separation unit includes a water storage unit, a water quantity detection unit, and a release valve that causes the outside air to flow in. In a water-removal operation: the control unit presses, using a pressuring unit, an object to be cleaned; suctions in cleaning water and introduced air via the suction pump; and stops the suction pump on the basis of detection by the water quantity detection unit. Outside air flows into the water storage unit from the release valve. Thus, it is possible to prevent the ingress of bubbles into the suction unit and realize stable dehydration performance during dehydration operation.

Description

washing machine

FIELD OF THE INVENTION The present invention relates to a washing machine for washing laundry and the like.

BACKGROUND OF THE INVENTION Conventionally, there has been an upright washing machine in which laundry such as laundry is stirred in a rotary tub, or the laundry is lifted in a rotary tub in the direction of rotation, and then it is dropped from above to perform tap cleaning Drum type washing machine. No matter what kind of washing machine is used, in addition to the chemical force of the lotion, a mechanical force is applied to the laundry for washing.

Among the above-mentioned washing machines, a general washing machine having the following structure has been proposed, for example, in Japanese Patent Laid-Open No. 10-201988 (hereinafter referred to as "Patent Document 1"). This structure is caused by high-speed rotation with a rotating tank. The centrifugal force dehydrates the centrifugal force that separates the water from the laundry to dehydrate the washed laundry.

However, the above-mentioned washing machine in which a mechanical force is applied to the laundry for washing is not suitable for washing the laundry shown below. In addition, centrifugal dehydration during dehydration after washing is not suitable for the laundry shown below. Specifically, it is a laundry which is prone to damage to cloth, or a laundry which is easily deformed due to entanglement and pulling of the laundry. Even the touch is easy to deteriorate (in general, hand-washing, such as knitted fabrics or woolen fabrics of sweaters, cardigan sweaters, scarves made of fine materials made of ultra-fine fibers, etc.).

Generally speaking, centrifugal dehydration has the advantage of high dehydration efficiency. However, from the other side, it is easy to produce vibration or noise caused by the high-speed rotation of the rotating groove. Therefore, in order to reduce vibration and noise during a dehydration operation, a washing machine having a structure that absorbs moisture from laundry to perform dehydration has been proposed in, for example, Japanese Patent Laid-Open No. 7-222894 (hereinafter referred to as "Patent Document 2"). .

As shown in FIG. 8, the drum type full-automatic washing machine described in Patent Document 2 sucks moisture from the laundry 52 together with the air in the drum 51. Specifically, the above-mentioned washing machine has an attracting body 54 that covers the outer peripheral wall of the drum 51 and communicates with the water passing hole 53 of the drum 51. Then, the water contained in the laundry 52 attached to the inner peripheral wall of the drum 51 is sucked by the suction body 54 by the suction pump 55. Thereby, the water contained in the laundry 52 is dehydrated.

That is, by the suction dehydration method that sucks air and washing water together, it becomes possible to perform dehydration that suppresses damage to the cloth of the laundry. However, since air flows into the washing water, the lotion components contained in the washing water may foam. Therefore, the suction pump must be configured so that the suctioned water does not enter the suction pump for sucking air and washing water. Therefore, in general, a washing machine having the above-mentioned configuration is provided with a gas-liquid separation device that separates air and liquid.

Furthermore, a washing machine having a structure that prevents the detergent foam generated during washing from entering the wind path or the like has been disclosed in, for example, Japanese Patent Laid-Open No. 2008-253589 and Japanese Patent Laid-Open No. 2008-73126 (hereinafter referred to as "Patent Document 3", "Patent Document 4") and so on.

Specifically, as shown in FIG. 9, the drum-type washing and drying machine described in Patent Document 3 includes a valve body 56 that blocks the air passage 57 during washing. This prevents the foam from entering the air path 57.

As shown in FIG. 10, the drum-type washing machine described in Patent Document 4 includes a foam detection sensor 59 provided in the water tank 58 and a heating air blowing unit 60. In addition, after the foam detection sensor 59 detects foaming in the water tank 58, it is configured to defoam by applying hot air to the generated foam by heating the air blowing unit 60.

However, in the configuration of the washing machine described in Patent Document 2, the washing water and air sucked by the suction pump 55 are separated in the drain tank. At this time, the inside of the suction body 54 is decompressed due to suction, and becomes a negative pressure lower than the atmospheric pressure. Therefore, the foam generated from the washing water may expand due to the negative pressure. Moreover, the expanded foam may be attracted, and there is a possibility that the foam may be immersed in the air path connecting the gas-liquid separation device and the suction pump or may be immersed in the suction pump through the air path.

SUMMARY OF THE INVENTION The present invention provides a washing machine that can prevent the infiltration of foam toward the suction portion and achieve stable dehydration performance when it is unsuitable to use a mechanical force to spin the washed object.

The washing machine of the present invention comprises: a washing tank, which contains the objects to be washed and washing water; a pressing part, which presses the objects to be washed in the washing tank; a suction part, which sucks the washing water from the objects to be washed; and a dehydration path , Connect and connect the washing tank and the suction part. Furthermore, the washing machine includes: an external air introduction part to introduce external air into the washing tank; a gas-liquid separation part provided in the dehydration path, and separating washing water that has been attracted from the object to be cleaned from air; The unit controls a washing operation including a dehydration operation of the washing machine. The gas-liquid separation section includes a water storage section that stores the attracted washing water, a water amount detection section that detects the amount of the washing water stored in the water storage section, and a pressurizing section that allows external air to flow into the water storage section. In the dehydration operation, the control unit presses the object to be washed by the pressing unit, and sucks the washing water and air by the suction unit, and detects the washing stored in the water storage unit by the water amount detecting unit. After the purified water reaches a predetermined amount, the driving of the suction section is stopped, and the external air flows into the water storage section through the pressurizing section.

According to this configuration, during the dehydration operation, the foam is prevented from entering the suction portion, and the washing water is sucked together with the introduced external air from the object to be washed. With this, it is possible to perform dehydration well without applying mechanical force such as torsion to the washed object that is not suitable for washing by washing action such as washing or squeezing caused by the action of mechanical force. As a result, a washing machine capable of achieving stable dehydration performance can be obtained.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited by this embodiment.
(Embodiment 1)

Hereinafter, a washing machine 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 6. The washing machine 1 performs a washing operation including a washing step, a rinsing step, a dehydrating step, and the like.

FIG. 1 is a cross-sectional view of a main part of a washing machine 1 in Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of main parts in a state where the cover 5 of the washing machine 1 is opened. 3A and 3B are schematic views showing the operation of the washing machine 1 during washing. FIG. 4 is a cross-sectional view of a main part during a dehydration operation of the washing machine 1. FIG. 5 is a diagram showing a procedure of a washing cycle of the washing machine 1. FIG. 6 is a timing chart showing a final dehydration operation of the washing machine 1. In addition, in FIG. 3A and FIG. 3B, the water level detection part 17 etc. which are mentioned later are omitted and described. In addition, in FIG. 3A and FIG. 3B, the water level of a washing water is shown by W.

In the following description, the grip 5a side shown in the figure is defined as the front, the gas-liquid separation part 30 side is defined as the rear, the cover 5 side is defined as the upper side, and the washing tank 4 side is defined as the lower side. .

In FIGS. 1 to 6, the washing machine 1 according to the first embodiment includes at least a water tank portion 6 disposed at a lower portion and a cover 5 disposed at an upper portion. The water tank part 6 includes a washing tank 4 having a predetermined depth and formed into, for example, a square shape. The washing tank 4 includes an opening portion 3 formed on the upper surface, a bottom portion 4a, and the like. The opening part 3 is an opening which can take out and put in the to-be-washed object 2 which is laundry, such as laundry. After being cleaned by the user, the object to be cleaned 2 is stored in the bottom 4 a of the washing tank 4.

The cover body 5 is rotatably attached to the rear edge of the upper side of the water tank part 6 by a hinge part 6a. The lid body 5 has a lid portion 5 b which opens and closes the opening portion 3 of the washing tank 4 inside.

In addition, the structure of the washing machine 1 according to the first embodiment is such that, in a general washing machine where mechanical force is applied to wash the object to be washed 2, the object to be washed 2 which is easily deformed and deformed, or the object 2 to be damaged is easily damaged. Waiting for washing is very effective. The specific objects to be cleaned 2 include, for example, woolen fabrics such as sweaters and cardigans, or scarves made of fine materials made of extremely fine fibers.

The cover 5 includes a grip 5a provided at the front. The lid 5 is configured to open and close the opening 3 of the washing tank 4 when the user holds the grip 5a and rotates it in the direction of arrow R1 (see FIG. 2). Furthermore, the cover body 5 is comprised so that the state may be maintained in the state which opened the predetermined angle (about 60 degrees). Furthermore, after the cover 5 is closed, the cover 5 is locked by a locking device (not shown) to maintain the closed state. When the cover 5 is opened, the user operates the grip 5a to unlock the locking device.

The cover 5 includes a pressure reducing section 7 provided on the inside. In addition, the pressurization and decompression part 7 of Embodiment 1 is comprised with the 2nd pressurization and decompression part 7a and the 2nd pressurization and decompression part 7b, for example. Specifically, the first pressurizing and decompressing section 7a includes a first pressing section 8a, a first hose 9a, a first pressurizing pump 10a, a first on-off valve 11a, and the like. The second pressure reducing section 7b includes a second pressing section 8b, a second hose 9b, a second pressure pump 10b, a second on-off valve 11b, and the like.

Herein, when the first pressurized and decompressed portion 7 a and the second pressurized and decompressed portion 7 b are collectively described below, they are simply labeled as the pressurized and decompressed portion 7. In addition, the first pressing portion 8a and the second pressing portion 8b, the first hose 9a and the second hose 9b, the first pressure pump 10a and the second pressure pump 10b, the first on-off valve 11a, and the second When the on-off valve 11 b is collectively described, only the pressing portion 8, the hose 9, the pressure pump 10, and the on-off valve 11 are simply labeled. That is, for a plurality of a and b symbols that are individually displayed, as long as there is no special difference, they will be omitted for labeling.

The above-mentioned pressurizing and decompressing section 7 is constituted by a pressing section 8, a hose 9, a pressure pump 10, an on-off valve 11, and the like. The pressing portion 8 has a flexible bag shape such as rubber or synthetic resin, and is formed into a bellows shape, for example. The pressure pump 10 communicates with the pressing portion 8 through a hose 9. When the pressure pump 10 operates, a fluid such as gas (for example, air or the like) or liquid (for example, water, aqueous solution, or oil) is supplied to the inside of the pressing section 8 through the hose 9. The on-off valve 11 discharges or accumulates the fluid supplied to the pressing portion 8 to the outside through the opening and closing operation.

The first pressure-reducing and pressure-reducing portion 7 a and the second pressure-reducing and pressure-reducing portion 7 b are arranged inside the cover body 5 in the front-rear direction, for example. The pressing portion 8 of the pressurizing and decompressing portion 7 is attached to the washing tank 4 side (lower side) of the cover portion 5 b of the cover body 5 and is configured to expand and contract freely by expansion and contraction. That is, the pressing portion 8 is configured to move forward and backward in the vertical direction with respect to the object 2 to be cleaned accommodated in the bottom portion 4 a of the cleaning tank 4.

Specifically, the pressing portion 8 includes a pressing surface 8c that presses the object 2 to be washed, and a bellows-like telescopic portion 8d. When the pressing portion 8 is in the washing operation of the object 2 to be washed, the telescopic portion 8 d is extended until the pressing surface 8 c reaches the bottom portion 4 a of the washing tank 4.

The pressure reducing section 7 further includes a constant pressure release valve (not shown) that is opened to be discharged to the outside when the inside of the pressing section 8 reaches a predetermined pressure. The constant pressure release valve prevents the pressing portion 8 from being pressurized beyond a predetermined pressure. In the first embodiment, a case where the fluid supplied to the inside of the pressing portion 8 is air will be described as an example.

The cover portion 5 b includes a hollow cushion 12 that is provided annularly on the outside of the pressing portion 8 and is freely deformable. When the cover member 5 b is closed together with the cover body 5, the cushion member 12 is in close contact with the sealing portion 13 formed in a concave shape along the peripheral edge portion of the opening portion 3 of the washing tank 4. Thereby, the inside of the washing tank 4 becomes a watertight and airtight space. Therefore, during the washing operation, water or air can be prevented from leaking from the opening 3 of the washing tank 4 to the outside.

The lid body 5 is provided with a water supply path 16 for supplying washing water to the washing tank 4. A water supply valve 14 is provided in the water supply path 16 and communicates with the inside of the washing tank 4 through the detergent box 15. The opening and closing operation of the water supply valve 14 supplies and stops the supply of tap water (washing water) to the inside of the washing tank 4.

The water level detection unit 17 is provided in communication with the inside of the washing tank 4. The water level detecting section 17 detects the water level of the washing water stored in the washing tank 4.

The water level detection unit 17 includes a water level detection tank 18 having an opening above, a float 19, a water level switch 20, and the like. The buoy 19 will float up and down in response to changes in the water level in the water level detection tank 18. The water level switch 20 detects this when the buoy 19 is raised to a predetermined position by the supply of washing water.

The washing tank 4 includes a drainage hole 21 formed in the bottom 4a and discharging the washing water used in the washing step and the like. The drain hole 21 communicates with a drain path 23 provided with a drain valve 22. The opening and closing of the drain valve 22 drains and stops the washing water inside the washing tank 4.

The water tank portion 6 includes an overflow path 24. The overflow path 24 is a path for draining the washing water from the washing tank 4 to the outside when the level of the washing water included in the washing tank 4 becomes a predetermined level or more. The overflow path 24 has an overflow hole 24 a opened on the upper part of the washing tank 4, and is connected to the drain path 23 on the downstream side of the drain valve 22.

A check valve (not shown) is provided in the overflow path 24. The check valve operates in the overflow path 24 so as to be opened in the discharge direction from the washing tank 4 and closed (closed) in the inflow direction of the washing tank 4. That is, in the cleaning step and the flushing step, the check valve allows the washing water flowing out of the overflow hole 24a to pass through and is discharged to the outside. In the dehydration operation of the flushing step and the dewatering step, the check valve prevents the outside air from passing through the overflow path 24 toward the washing tank 4 when the suction pump 27 sucks the air inside the washing tank 4 described later. Internal inflow.

Furthermore, the washing tank 4 includes a suction port 25 provided at a substantially central portion (including the central portion) of the bottom portion 4a. When the object to be cleaned 2 is placed inside the cleaning tank 4, the suction port 25 is covered by the object to be cleaned 2. The suction port 25 is provided in communication with the dehydration path 26.

The suction pump 27, which is a suction unit, is arranged to communicate with the dewatering path 26 through a gas-liquid separation unit 30 and a suction path 32 described later. The suction pump 27 sucks washing water and the like from the object 2 to be washed.

When the washing water is sucked from the object to be washed 2 by the suction pump 27, the air inside the washing tank 4 is also sucked. Therefore, an external air introduction part 28 for introducing external air into the interior from the outside of the washing tank 4 is provided. In addition, the arrangement position of the outside air introduction part 28 may be arbitrary as long as it is a structure which forms an opening above the water level of the wash water accumulated in the inside of the washing tank 4, and is provided. For example, in FIG. 1, FIG. 2, and FIG. 4, the outside air introduction section 28 is disposed above the water level detection section 17 that communicates with the inside of the washing tank 4. In FIG. 3A and FIG. 3B, the outside air introduction part 28 is disposed on the upper side of the washing tank 4.

The outside air introduction unit 28 includes an air volume adjustment valve 29. The air volume adjustment valve 29 adjusts the air volume of the external air introduced into the washing tank 4. The air volume adjustment valve 29 has a narrow air passage area portion in a flow path like a needle valve, for example. The air passage area is adjusted to adjust the air volume of the external air that is sucked into the washing tank 4 by the suction pump 27. The outside air introduced into the washing tank 4 may be directly introduced from the outside of the washing machine 1. Moreover, it can also be set as the structure which introduce | transduces external air into the washing tank 4 through the internal space of the washing machine 1.

A gas-liquid separation unit 30 is provided in the dehydration path 26. The gas-liquid separation unit 30 separates the air in the washing tank 4 from the washing water that has been sucked from the object to be washed 2 and stores the sucked washing water. Specifically, the gas-liquid separation unit 30 includes a water storage unit 30a constituted by a pressure-resistant container. The water storage unit 30 a includes a secondary air vent 31 formed above and communicating with the dewatering path 26, and a primary air vent 33 communicating with the suction pump 27 through the suction path 32. A barrier 34 is provided between the primary air vent 33 and the secondary air vent 31. The barrier 34 is formed to protrude downward from the top surface of the gas-liquid separation unit 30. The barrier 34 prevents the washing water drawn into the gas-liquid separation unit 30 from the secondary air vent 31 from entering the primary air vent 33.

The gas-liquid separation unit 30 includes a dehydration and drainage port 35 provided at the bottom. The dewatering drainage port 35 communicates with a dewatering drainage path 37 having a dewatering drainage valve 36 that can be opened and closed freely.

The gas-liquid separation unit 30 includes a water amount detection unit 38 provided at a predetermined height position on the inner wall. Specifically, it is preferable that the height position of the water detection unit 38 is set within a range of 1/2 to 4/5 with respect to the maximum water level that the water storage unit 30a can store water.

The water amount detection unit 38 is configured by, for example, a pair of electrodes. The water detection unit 38 detects that the washing water stored in the water storage unit 30a of the gas-liquid separation unit 30 has reached a predetermined amount. Furthermore, when the washing water contains foam, the water amount detecting unit 38 detects that the upper portion of the foam has reached a predetermined height position. That is, after the washing water (water and / or foam) is detected by the water amount detecting unit 38, the control unit 40 described later will open the dehydration and drainage valve 36. As a result, the washing water is discharged outside the machine through the dewatering drainage path 37.

Here, when the washing water contains foam, if the foam adheres and remains on the barrier ribs 34, it becomes a cause of odor. In order to prevent the foam from remaining, when detecting the washing water, the water amount detecting unit 38 is disposed at a position where a certain space exists between the lower end of the barrier 34 and the washing water surface. That is, the water amount detecting unit 38 detects a predetermined amount that takes into account the amount of foam contained in the washing water.

The open valve 39 which is a pressurizing section is a path provided in a branched manner between the suction path 32 that connects the gas-liquid separation section 30 and the suction pump 27. By opening and closing the open valve 39, communication or blocking of the atmosphere (outside air) in the gas-liquid separation unit 30 is performed.

The control unit 40 is a side surface portion disposed in front of the inside of the cover 5. The control section 40 is provided with an operation display section 41 on the upper surface. The control unit 40 executes a washing operation by controlling various components based on the inputted information.

Specifically, the control section 40 is input with the water level of the washing water in the washing tank 4 detected by the water level detection section 17 and the water storage section 30a detected by the water amount detection section 38. The amount of washing water and other information.

In addition, the control unit 40 controls the pressure pump 10, the on-off valve 11, the water supply valve 14, the drain valve 22, the suction pump 27, the air volume adjustment valve 29, the dewatering drain valve 36, and the open valve 39 based on the input information. action. Thereby, the control part 40 sequentially controls each step, such as a washing process, a washing process, and a spin-drying process, and performs a washing operation. The control unit 40 is configured by, for example, a microcomputer.

As described above, the washing machine 1 of the first embodiment is configured.

The operation and effect of the washing machine 1 configured as described above will be described below.

First, the user inputs the selection of a washing course, the operation time of each step, and the like through the operation display portion 41 provided on the front portion of the upper surface of the cover 5. As a result, the control unit 40 executes a series of operations such as each step from the washing step to the dehydration step shown in FIG. 5 as a washing cycle according to the input setting content. At this time, the user can arbitrarily set, for example, the content such that only the washing step is performed. In addition, the above-mentioned setting operation may be performed after the to-be-cleaned object 2 described later is placed on the bottom portion 4 a in the washing tank 4.

Next, the user operates the handle 5a of the cover 5 to unlock the locking device for locking the washing tank 4 and the cover 5. Then, the user opens the cover 5 and arranges the shape of the object 2 to be cleaned, and then places it on the bottom 4a of the cleaning tank 4 so as to cover at least the suction opening 25. At this time, depending on the size of the object 2 to be washed, it may be folded.

After the placement of the object to be cleaned 2 is completed, the user closes the opening 3 of the washing tank 4 with the cover 5 and locks the washing tank 4 and the cover 5 with a locking device.

Then, the control unit 40 starts the washing operation in accordance with the washing schedule set in the operation display unit 41, for example, as shown in FIG.

The operation and function of the washing machine will be described below using the washing cycle shown in FIG. 5 as an example.

First, as the washing cycle, the operation and effect of the washing machine 1 when only the washing step is set will be specifically described.

In the cleaning step, the control unit 40 performs, for example, a water supply operation and a cleaning operation.

First, in the washing step, the control unit 40 performs a water supply operation. That is, the control unit 40 opens the water supply valve 14. When the water supply valve 14 is opened, tap water and lotion are used as washing water and are supplied from the water supply path 16 to the inside of the washing tank 4 through the lotion box 15. The washing water supplied to the washing tank 4 slowly penetrates into the inside of the object 2 to be washed. As a result, a state is obtained in which washing water is contained between the fibers of the object 2 to be washed.

Next, the control unit 40 monitors whether or not the washing water has been supplied to a predetermined water level inside the washing tank 4 with the water level switch 20 of the water level detecting unit 17. After detecting that the washing water has been supplied to a predetermined water level with the water level switch 20, the control unit 40 closes the water supply valve 14.

After the water supply operation is completed, the control unit 40 executes the cleaning operation in the cleaning step. That is, the control unit 40 first closes the first on-off valve 11a of the first pressurizing and decompressing unit 7a. Then, the control unit 40 drives the first pressure pump 10a for a predetermined time or until the first pressing part 8a reaches a predetermined pressure. As a result, air is supplied to the inside of the first pressing portion 8a, and the first pressing portion 8a is expanded.

Specifically, as shown in FIG. 3A, by supplying air to the inside of the first pressing portion 8a, the telescopic portion 8d of the first pressing portion 8a is extended downward, and the first pressing portion 8a is washed toward the target.物 2Extended. As a result, the object to be cleaned 2 placed below the first pressing part 8a is pressed by the pressing surface 8c of the first pressing part 8a, and the part of the object 2 to be washed that is pressed is compressed. Therefore, the thickness of the object to be washed 2 becomes thin. At this time, the control unit 40 opens the second on-off valve 11b of the second pressurizing and decompressing unit 7b, so that the second pressing unit 8b can be contracted.

That is, by the expansion of the first pressing portion 8a, the object to be washed 2 is compressed, and the volume thereof changes. Thereby, the washing water contained in the inside of the to-be-washed object 2 is squeezed out from the to-be-washed object 2. At this time, a water flow is generated inside the object to be cleaned 2. As a result, the dirt adhering to the object to be cleaned 2 is separated from the fibers and the like by the water flow and removed.

In addition, the washing water included in the object to be washed 2 will be inside the object to be washed 2 from below the first pressing portion 8a to below the second pressing portion 8b, that is, toward the arrow A in FIG. 3A Move in the direction shown. At this time, the moving object is used to push the pressing surface 8c of the second pressing portion 8b upward while expanding the object to be washed 2 below the second pressing portion 8b. Thereby, the air inside the second pressing portion 8b is discharged from the opened second on-off valve 11b. As a result, the second pressing portion 8b contracts.

Next, the control unit 40 closes the second on-off valve 11b of the second pressurizing and decompressing unit 7b. Then, the control unit 40 drives the second pressure pump 10b for a predetermined time or until the second pressing unit 8b reaches a predetermined pressure. As a result, air is supplied to the inside of the second pressing portion 8b, and the second pressing portion 8b is expanded.

Specifically, as shown in FIG. 3B, by supplying air to the inside of the second pressing portion 8b, the telescopic portion 8d of the second pressing portion 8b is extended downward, and the second pressing portion 8b is washed toward the target.物 2Extended. Further, the object to be cleaned 2 placed below the second pressing part 8b is pressed by the pressing surface 8c of the second pressing part 8b, and the part of the object 2 to be washed that is pressed is compressed. Therefore, the thickness of the object to be washed 2 becomes thin. At this time, the control unit 40 opens the first on-off valve 11a of the first pressurizing and decompressing unit 7a, so that the first pressing unit 8a can be contracted.

That is, by the expansion of the second pressing portion 8b, the object 2 to be washed is compressed, and the volume thereof is changed. Thereby, the washing water contained in the inside of the to-be-washed object 2 is squeezed out from the to-be-washed object 2. At this time, a water flow is generated inside the object to be cleaned 2. As a result, the dirt adhering to the object to be cleaned 2 is separated from the fibers and the like by the water flow and removed.

In addition, the washing water included in the object to be washed 2 will be inside the object to be washed 2 from below the second pressing portion 8b to below the first pressing portion 8a, that is, toward arrow B in FIG. 3B Move in the direction shown. At this time, the moving object is used to push the pressing surface 8c of the first pressing portion 8a upward while expanding the object to be washed 2 below the first pressing portion 8a. Thereby, the air inside the first pressing portion 8a is discharged from the opened first on-off valve 11a. As a result, the first pressing portion 8a is contracted.

That is, during the cleaning operation, the first pressing portion 8a and the second pressing portion 8b are repeatedly expanded and contracted repeatedly at different time points for a predetermined time. As a result, a scrubbing effect is exerted on the object 2 to be washed. Therefore, the mechanical force caused by stirring, tapping, washing, etc. does not act on the object 2 to be cleaned. That is, a water flow that moves in multiple directions is generated inside the object to be cleaned 2. Thereby, the stain | pollution | contamination of the to-be-cleaned object 2 can be removed without applying a mechanical force. Here, specifically, the time difference between the expansion and contraction described above is, for example, pressing for 1 second by the expansion of the first pressing portion 8a, and decompressing for 1 second by the contraction of the second pressing portion 8b. . The predetermined time is, for example, about 10 minutes. In addition, it is needless to say that the time point and the predetermined time at which the expansion and contraction differ are not limited to the above values, and may be arbitrarily set in accordance with the state of the object 2 to be washed.

As described above, only the washing step is performed as the washing course.

Hereinafter, a case where a washing cycle from the washing step to the dehydration step is set consistently will be described.

In this case, the control unit 40 first performs the above-mentioned cleaning step.

After the washing step, the control unit 40 then sequentially performs the washing step and the dehydration step.

In the rinsing step, the control unit 40 performs, for example, a dehydration operation and a water storage rinsing operation. Hereinafter, the dehydration operation in the washing step is referred to as an intermediate dehydration operation.

That is, in the intermediate dehydration operation, the control unit 40 first opens the drain valve 22 to drain water. As a result, the washing water in the washing tank 4 is discharged from the drainage hole 21 through the drainage path 23 to the outside.

After the drainage is completed, the control unit 40 compresses during the intermediate dehydration operation. That is, the control unit 40 closes the first on-off valve 11 a and the second on-off valve 11 b in a state where the drain valve 22 is opened, and drives the first pressure pump 10 a and the second pressure pump 10 b. Thereby, the 1st pressing part 8a and the 2nd pressing part 8b expand, and the to-be-cleaned material 2 is pressed and compressed. As a result, a part of the washing water included in the object to be washed 2 is squeezed out from the object to be washed 2 and is forcibly discharged from the drainage hole 21.

After the compression is completed, the control unit 40 sucks during the intermediate dehydration operation. That is, the control unit 40 closes the drain valve 22 and drives the suction pump 27 in a state where the object to be washed 2 is pressed. Thereby, the outside air passes through the air volume adjustment valve 29 and is introduced into the washing tank 4 from the outside air introduction part 28. With the introduced external air, the washing water and air in the washing tank 4 are sucked from the suction port 25 and are conveyed to the gas-liquid separation unit 30 through the dehydration path 26. Furthermore, the sucked air is discharged to the outside by the suction pump 27. On the other hand, the washing water is accumulated in the water storage unit 30 a of the gas-liquid separation unit 30, and thereby the object to be washed 2 is dehydrated.

In the rinsing step, after the dehydration operation, the control unit 40 then performs a water storage rinsing operation.

In the water storage rinsing operation, the control unit 40 first supplies water. The control unit 40 opens the water supply valve 14 and supplies a predetermined amount of washing water to the inside of the washing tank 4. At this time, the lotion in the lotion box 15 is completely used up in the above-mentioned washing step. Therefore, the washing water during the water rinsing operation is tap water.

Then, similar to the cleaning operation described above, the control unit 40 drives the first pressure pump 10a and the second pressure pump 10b, and executes the expansion and contraction of the first pressing portion 8a and the second pressing portion 8b alternately and repeatedly. As a result, the detergent concentration of the washing water inside the object to be washed 2 is diluted.

This concludes the rinsing step.

Then, the control unit 40 repeatedly executes the above-mentioned rinsing step a plurality of times (for example, twice). Specifically, the rinsing step 1 and the rinsing step 2 shown in FIG. 5 are performed. At this time, between the rinsing step 1 and the rinsing step 2, the same intermediate dehydration operation as described above is also performed.

Next, the control unit 40 executes the dehydration step shown in FIG. 5 after performing the rinsing step. During the dehydration step, a dehydration action is performed. Hereinafter, the dehydration operation in the dehydration step is referred to as a final dehydration operation.

Hereinafter, the final dehydration operation in the dehydration step will be described with reference to FIG. 6.

That is, in the dehydration step, the control unit 40 first performs drainage of the washing water used in the rinsing step.

Specifically, the control unit 40 opens the drain valve 22. As a result, the washing water inside the washing tank 4 is discharged from the drainage hole 21 through the drainage path 23 to the outside. At this time, the control unit 40 opens the air volume adjustment valve 29 and opens the external air introduction unit 28. Thereby, the inside of the washing tank 4 communicates with the outside, and external air is introduced. Then, by the introduction of the external air, the washing water is smoothly discharged to the outside. At this time, the first on-off valve 11a, the second on-off valve 11b, and the dehydration and drainage valve 36 are closed.

After the drainage is completed, the control unit 40 performs compression in the final dehydration operation. That is, as shown in FIG. 6, the control unit 40 first opens the drain valve 22. Then, the control unit 40 drives both the first pressure pump 10a and the second pressure pump 10b almost simultaneously (including simultaneously) in a state in which both the first on-off valve 11a and the second on-off valve 11b are closed. Thereby, air is supplied to the inside of the first pressing portion 8a and the second pressing portion 8b, and the expansion of the first pressing portion 8a and the second pressing portion 8b causes the object 2 to be compressed and compressed . As a result, a part of the washing water included in the object to be washed 2 is forcibly discharged, and is discharged to the outside through the drainage hole 21 through the drainage path 23.

That is, with the configuration and function of the pressing section 8 of the first embodiment, the pressing surface 8c can be pressed closely against the object 2 to be pressed uniformly. Thereby, the washing water contained in the inside of the to-be-cleaned material 2 can be forced out.

After the compression is completed, the control unit 40 performs suction in the final dehydration operation. That is, the control unit 40 stops the first pressure pump 10a and the second pressure pump 10b, and after a predetermined time T1 (for example, one minute), the control unit 40 presses the object 2 to be washed with the pressing unit 8, The drain valve 22 is closed and the suction pump 27 is driven. Thereby, the air and water inside the washing tank 4 pass through the suction port 25 and the dehydration path 26, and are sucked into the gas-liquid separation part 30. Therefore, the inside of the washing tank 4 shown in FIG. 4 is decompressed from atmospheric pressure by suction. Then, the object to be cleaned 2 is pressed by a pressure difference between the pressure in the pressing portion 8 and the pressure in the washing tank 4.

Furthermore, the outside air passes through the air volume adjustment valve 29 and is introduced into the cleaning tank 4 from the outside air introduction part 28, and the outside air intrudes into the washed part pressed by the first pressing part 8a and the second pressing part 8b. Inside of Net 2. At this time, the internal pressures of the first pressing portion 8a and the second pressing portion 8b, which are expanded by the driving of the first pressure pump 10a and the second pressure pump 10b, are controlled by, for example, a constant pressure release valve. Keep it under pressure. Therefore, the object to be cleaned 2 is maintained in a state of being pressurized by a certain pressure.

The external air introduced into the washing tank 4 from the external air introduction part 28 is sucked together and moves toward the suction port 25 while squeezing the washing water remaining between the fibers of the object 2 to be washed. . At this time, the washing water carried to the suction port 25 by the external air will remain in the fibers of the object 2 due to surface tension. However, due to the shearing force caused by the external air flow, the washing water is separated from the fibers of the object to be washed 2 and is drawn from the suction port 25 of the washing tank 4 through the dewatering path 26 toward the gas-liquid separation section 30. Moving.

Moreover, among the washing water and the suctioned air flowing from the secondary-side ventilation port 31 toward the gas-liquid separation section 30, only air flows from the primary-side ventilation port 33 above the gas-liquid separation section 30 through the suction pump 27. Be discharged. On the other hand, the washing water falls from the secondary-side vent 31 due to its own weight, and is stored in the water storage section 30 a of the gas-liquid separation section 30. At this time, the barrier 34 provided between the primary air vent 33 and the secondary air vent 31 prevents entry of the washing water into the primary air vent 33. Therefore, infiltration of the washing water into the suction pump 27 can be prevented beforehand.

In addition, in general, the washing water and air inside the suctioned washing tank 4 pass through a path having the least resistance. Therefore, when a short circuit path containing no washing water is formed in the object to be cleaned 2 with the progress of dehydration, the flow of air will concentrate on the formed short circuit path, causing the suction of the washing water. No progress will be made.

However, in the washing machine 1 according to the first embodiment, the object to be washed 2 is pressurized by a certain pressure at any time by the first pressing portion 8a and the second pressing portion 8b. Therefore, the formation of the short-circuit air path is suppressed. Thereby, together with the external air introduced into the inside of the washing tank 4, the suction and dehydration of the washing water is performed without stagnation. That is, the washing machine 1 according to the first embodiment expands the pressing portion 8 by the suction pump 27 so that the pressing surface 8c of the pressing portion 8 is brought into close contact with the object 2 to be pressed uniformly. As a result, external air is introduced into the object to be cleaned 2 and a desired dehydration performance can be obtained.

Next, as shown in FIG. 6, the control unit 40 sucks the washing water together with the external air introduced into the washing tank 4 by the suction pump 27 for a predetermined time T2 (for example, 4 minutes). After a predetermined time T2 has elapsed, the control unit 40 opens the first on-off valve 11a and the second on-off valve 11b, and stops driving of the first pressure pump 10a, the second pressure pump 10b, and the suction pump 27. Thereby, the air inside the 1st pressing part 8a and the 2nd pressing part 8b passes through the 1st on-off valve 11a and the 2nd on-off valve 11b, and is discharged | emitted outside.

Then, the object to be washed 2 is released from the pressing performed by the first pressing portion 8a and the second pressing portion 8b, and the dehydration operation is finally ended.

With the series of operations described above, after the dehydration step is completed, the control unit 40 discharges the washing water stored in the water storage unit 30a through the dewatering drainage path 37 to end the washing cycle.

Although the above-mentioned final dehydration operation has been described with reference to FIG. 6, the same dehydration operation as in FIG. 6 may be performed in the intermediate dehydration operation. Here, the intermediate dehydration operation includes an intermediate dehydration operation performed in the rinsing step, and an intermediate dehydration operation performed between repeatedly performing a plurality of rinsing steps. The predetermined time T1 and the predetermined time T2 are also set to optimal values in each intermediate dehydration operation.

In T3 in FIG. 6, the control unit 40 performs operations such as temporarily stopping the driving of the suction pump 27. This is an operation when the washing water accumulated in the water storage unit 30a exceeds the predetermined amount. The control unit 40 drains the foam and washing water accumulated in the water storage unit 30a to the outside of the machine. Then, at T4 in FIG. 6, the control unit 40 returns the dehydration step by re-driving the suction pump 27 or the like.

That is, in the intermediate dehydration operation and the final dehydration operation performed after the washing step, the washing water stored in the water storage unit 30a gradually increases as each step proceeds. Therefore, in the first embodiment, during the dehydration operation, the control section 40 monitors the water storage amount of the water storage section 30 a of the gas-liquid separation section 30 with the water amount detection section 38. Then, when the accumulation of the washing water (water and / or foam) exceeding a predetermined amount is detected by the water amount detecting section 38, the control section 40 stops driving the suction pump 27 and opens the open valve 39. This allows communication with the atmosphere, and external air flows into the gas-liquid separation unit 30. The control unit 40 opens the dehydration and drainage valve 36 that was originally closed almost simultaneously (including simultaneously). As a result, the foam and washing water accumulated in the water storage unit 30 a are discharged from the dewatering drainage port 35 through the dewatering drainage path 37 to the outside.

At this time, the outside air passes through the suction path 32 from the opened open valve 39 and flows into the gas-liquid separation unit 30 having a negative pressure (−P) lower than the atmosphere due to the suction by the suction pump 27. Thereby, the internal pressure of the gas-liquid separation part 30 rises.

Moreover, in the intermediate dehydration operation of the rinsing step immediately after the washing step, the washing water containing a large amount of the detergent component is sucked into the water storage section 30 a of the gas-liquid separation section 30. At this time, the space volume in the gas-liquid separation unit 30 is reduced by the suction of the washing water. Thereby, the washing water in the gas-liquid separation part 30 is pressurized from a reduced pressure state. Therefore, the volume of the foam in the gas-liquid separation section 30 is reduced, and as a result, the volume of the washing water including the foam is reduced. Then, the volume-reduced washing water including the foam is discharged to the outside through the dewatering drainage path 37. This prevents the washing water containing foam from entering the suction pump 27.

Furthermore, when flowing into the gas-liquid separation unit 30, even if the foam scattered from the washing water adheres to the suction path 32, and the external air flows in through the suction path 32, the adhered foam can be pushed back to the gas-liquid Inside the separation section 30.

In addition, the pressure in the decompressed gas-liquid separation unit 30 is restored by the introduction of external air. As a result, the volume of the foam is reduced in a short time. Therefore, it is possible to prevent the foam remaining in the upper part of the gas-liquid separation section 30 from entering the suction pump 27 during the next suction.

In addition, in the first embodiment, the pressurizing and decompressing section 7 is a pressurizing section 8 having flexibility, a pressurizing pump 10 that supplies air to the inside of the pressing section 8 to expand it, and a pressing section Although an example in which the on-off valve 11 is exhausted and contracted by the air inside 8 has been described, it is not limited thereto. For example, a configuration may be adopted in which a pressure reducing pump is provided instead of the on-off valve 11, and the pressure portion 8 is contracted and reduced in pressure by the pressure reducing pump. Furthermore, the pressure pump 10 may be used as a pressure reducing pump by rotating the pressure pump 10 in the reverse direction.

In the first embodiment, the fluid supplied to the inside of the pressing portion 8 to expand the pressing portion 8 has been described using air as an example, but it is not limited to this. It can also be other gases with high safety such as nitrogen or argon, or even liquids. In the case of a gas, it is sufficient to suck in the surrounding air with a pressure pump 10 or the like as in the first embodiment, and the restriction on exhausting will be reduced, so it is convenient in terms of structure and the like. . On the other hand, in the case of a liquid, for example, water, an aqueous solution, or an oil can be used. In the case of a liquid, it is more preferable if there is an accumulation portion that accumulates liquid. That is, since the density of the liquid is higher than that of the air and the elasticity is not as great as that of the gas, the pressing portion 8 can be surely expanded.

As described above, the washing machine 1 according to the first embodiment includes the washing tank 4 containing the object to be cleaned 2 and the washing water; the pressing part 8 pressing the object 2 in the washing tank 4; the suction pump 27, The object to be washed 2 sucks the washing water; and the dewatering path 26 communicates with the washing tank 4 and the suction pump 27. Furthermore, the washing machine 1 includes an external air introduction part 28 for introducing external air into the washing tank 4; a gas-liquid separation part 30 provided in the dehydration path 26, and washing water that has been attracted from the object 2 to be washed Separate from the air; and the control unit 40 controls the washing operation including the dehydration operation of the washing machine. The gas-liquid separation section 30 includes: a water storage section 30a that stores the attracted washing water; a water amount detection section 38 that detects the amount of the washing water stored in the water storage section 30a; and an open valve 39 to allow external air to flow in Inside the water storage unit 30a. In addition, the control unit 40 is configured to press the object to be washed 2 by the pressing portion 8 during the dehydration operation, and suck the washing water and the introduced air by the suction pump 27, and the water amount detection portion When a predetermined amount is detected by 38, the driving of the suction pump 27 is stopped, so that external air flows into the water storage unit 30a from the open valve 39.

According to this configuration, the pressure in the gas-liquid separation unit 30 is increased to reduce the volume of the generated foam, and it is possible to prevent the foam from entering the suction pump 27 during the dehydration operation. In addition, the dewatering path 26 can suck the washing water extruded from the object to be washed 2 together with the external air introduced into the gas-liquid separation unit 30. Therefore, it is possible to perform dehydration well without applying mechanical force such as torsion to the washed object 2 that is not suitable for washing by washing action such as washing or squeezing caused by the action of mechanical force.

The pressurizing section of the washing machine 1 according to the first embodiment is provided in a suction path 32 connecting the gas-liquid separation section 30 and the suction pump 27.

With this configuration, it is possible to push the foam that has scattered and adhered to the suction path 32 toward the gas-liquid separation unit 30 by the introduction of external air caused by the opening of the open valve 39. This makes it possible to more reliably prevent the foam from entering the suction pump 27.

In addition, the pressurizing section of the washing machine 1 according to the first embodiment is constituted by an open valve 39 that inflows and shields the outside air into the water storage section 30a.

According to this configuration, by opening the open valve 39, the outside air can flow into the gas-liquid separation unit 30, and the pressure in the gas-liquid separation unit 30 can be increased with a simple structure. This reduces the volume of the generated foam and prevents the foam from entering the suction pump 27 during the dehydration operation.

The gas-liquid separation unit 30 of the washing machine 1 according to the first embodiment includes a dewatering drainage path 37 for draining the washing water stored in the water storage unit 30a to the outside of the washing machine, and a dehydration drainage valve 36 provided in the dehydration drainage path 37. The control unit 40 is configured to open the dehydration and drainage valve 36 when external air flows from the open valve 39 into the water storage unit 30a.

According to this configuration, the foam and the washing water in the gas-liquid separation unit 30 can be discharged to the outside of the machine and quickly returned to the dehydration step. Thereby, it is possible to prevent the foam from entering the suction pump 27 and shorten the dehydration time.
(Embodiment 2)

Hereinafter, a washing machine according to a second embodiment of the present invention will be described with reference to FIG. 7.

FIG. 7 is a configuration diagram of a pressurizing section of the washing machine 1 in Embodiment 2 of the present invention.

The washing machine 1 according to the second embodiment is different from the first embodiment in that the washing machine 1 includes a pressurizing section 42 having a pressurizing function. The other configurations are the same as those of the first embodiment. Therefore, the same reference numerals are assigned to the same configurations, and the detailed description will refer to the first embodiment.

That is, as shown in FIG. 7, the pressurizing section 42 of the second embodiment includes an open valve 39 and an air blowing section 42 b. The open valve 39 performs inflow and shielding of external air into the water storage unit 30 a of the gas-liquid separation unit 30 in accordance with the opening and closing operation instruction of the control unit 40. The air blowing unit 42b sends external air into the water storage unit 30a according to the driving instruction of the control unit 40.

The pressurizing section 42 is a path which is divided from a suction path 32 connecting the gas-liquid separation section 30 and the suction pump 27. The air blowing unit 42b is configured by, for example, an air pump.

The operation of the pressurizing section 42 of the washing machine in the second embodiment will be described below.

First, when the dehydration and drainage valve 36 is opened, the control unit 40 drives the air supply unit 42 b to send external air into the water storage unit 30 a of the gas-liquid separation unit 30. With the external air being blown, the inside of the water storage unit 30a is pressurized. Thereby, the foam and wash water accumulated in the water storage part 30 a of the gas-liquid separation part 30 are quickly discharged from the dewatering drainage port 35 to the outside of the machine. As a result, the dehydration time can be shortened, and the foam remaining in the water storage unit 30a can be suppressed.

As described above, the washing machine of the present invention includes: a washing tank that houses the object to be washed and washing water; a pressing part that presses the object to be washed in the washing tank; and a suction part that sucks and cleans the object from the object to be washed Water purification; and a dehydration path, which connects the washing tank and the suction part. Furthermore, the washing machine includes: an external air introduction part to introduce external air into the washing tank; a gas-liquid separation part provided in the dehydration path, and separating washing water that has been attracted from the object to be cleaned from the air; and control The unit controls a washing operation including a dehydration operation of the washing machine. The gas-liquid separation section includes: a water storage section that stores the attracted washing water; a water amount detection section that detects the amount of the washing water stored in the water storage section; and a pressurizing section that allows external air to flow into the water storage section. In addition, the control unit is configured to press the object to be washed by the pressing portion during the dehydration operation, and suck the washing water and air by the suction portion, and the water amount detection portion detects that it is accumulated in the water storage After the washing water in the part reaches a predetermined amount, the driving of the suction part is stopped, and the external air flows into the water storage part through the pressurizing part.

According to this configuration, during the dehydration operation, the water storage section of the gas-liquid separation section is opened to the atmosphere, and the pressure in the water storage section that has become negative pressure due to suction increases. Thereby, the volume of the generated foam is reduced, and it is possible to prevent the foam from entering the suction portion. Moreover, it is possible to suck the washing water extruded from the object to be cleaned together with the external air introduced into the gas-liquid separation part through the dehydration path. Therefore, for objects to be washed that are not suitable for washing by washing action such as washing or squeezing caused by the action of mechanical force, dehydration can be performed well without applying mechanical force such as torsion.

The washing machine of the present invention preferably has a configuration in which a suction path that connects the gas-liquid separation section and the suction section is provided in the pressurizing section.

With this configuration, it is possible to push the foam that has scattered and adhered to the suction path by the introduction of external air caused by the opening of the pressurizing section toward the gas-liquid separation section. This makes it possible to more reliably prevent the foam from entering the suction portion.

The pressurizing section of the washing machine of the present invention is preferably constituted by an open valve, and the open valve performs inflow and shielding of external air into the water storage section.

According to this configuration, by opening the open valve, external air can flow into the gas-liquid separation section, and the pressure in the gas-liquid separation section can be increased with a simple configuration. Thereby, the volume of the generated foam is reduced, and it is possible to prevent the foam from entering the suction portion during the dehydration operation.

The gas-liquid separation section of the washing machine of the present invention includes a dewatering and drainage path for draining the washing water stored in the water storage section toward the outside of the washing machine; and a dehydration and drainage valve provided on the dehydration and drainage path. Furthermore, it is preferable that the control section is configured to open the dehydration and drainage valve when external air flows from the pressurizing section into the water storage section.

According to this configuration, the foam and the washing water in the gas-liquid separation section can be discharged to the outside of the machine and quickly returned to the dehydration step. Thereby, it is possible to prevent the foam from penetrating into the suction portion, and to shorten the dehydration time.

In addition, the pressurizing part of the washing machine of the present invention further includes a blower part that blows outside air into the water storage part, and the control part is preferably configured to drive the blower part when the dehydration drain valve is opened.

With this configuration, the foam and the washing water in the gas-liquid separation section can be quickly discharged to the outside of the machine. Thereby, the dehydration time can be shortened, and the foam remaining in the gas-liquid separation section can be suppressed.

1‧‧‧washing machine

2‧‧‧ to be washed

3‧‧‧ opening

4‧‧‧washing tank

4a‧‧‧ bottom

5‧‧‧ cover

5a‧‧‧grip

5b‧‧‧ cover

6‧‧‧Sink section

6a‧‧‧hinge section

7‧‧‧Pressure and pressure reduction section

7a‧‧‧The first pressure reducing section

7b‧‧‧Second pressure decompression unit

8‧‧‧Pressing section

8a‧‧‧The first pressing part

8b‧‧‧Second pressing part

8c‧‧‧Pressing surface

8d‧‧‧ Telescopic

9‧‧‧ hose

9a‧‧‧1st hose

9b‧‧‧ 2nd hose

10‧‧‧ booster pump

10a‧‧‧The first booster pump

10b‧‧‧Second booster pump

11‧‧‧ On-off valve

11a‧‧‧The first on-off valve

11b‧‧‧2nd on-off valve

12‧‧‧ Pads

13‧‧‧Sealing Department

14‧‧‧ Water supply valve

15‧‧‧ lotion box

16‧‧‧ Water supply route

17‧‧‧Water level detection department

18‧‧‧Water level detection tank

19‧‧‧ Buoy

20‧‧‧Water Level Switch

21‧‧‧Drain hole

22‧‧‧Drain valve

23‧‧‧ drainage path

24‧‧‧ overflow path

24a‧‧‧ overflow hole

25‧‧‧ Attraction

26‧‧‧ Dehydration path

27‧‧‧ suction pump

28‧‧‧ External air introduction unit

29‧‧‧Air volume adjustment valve

30‧‧‧Gas-liquid separation department

30a‧‧‧Water storage department

31‧‧‧ secondary air vent

32‧‧‧ Attraction Path

33‧‧‧Primary vent

34‧‧‧ The barrier

35‧‧‧dehydration drain

36‧‧‧ Dewatering Drain Valve

37‧‧‧ Dewatering drainage path

38‧‧‧Water detection unit

39‧‧‧ open valve

40‧‧‧Control Department

41‧‧‧ Operation display

42‧‧‧Pressure section

42b‧‧‧Air Supply Department

51‧‧‧ roller

52‧‧‧Laundry

53‧‧‧through hole

54‧‧‧ Attractor

55‧‧‧ suction pump

56‧‧‧Valve body

57‧‧‧Wind Road

58‧‧‧Sink

59‧‧‧Foam detection sensor

60‧‧‧Heating air supply unit

A, B, R1‧‧‧ arrows

W‧‧‧ Water level of washing water

FIG. 1 is a cross-sectional view of a main part of a washing machine in Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of main parts in a state where a cover of the washing machine in the first embodiment is opened. FIG.

FIG. 3A is a schematic view showing an operation during washing in the same washing machine.

FIG. 3B is a schematic diagram showing an operation during washing in the same washing machine.

Fig. 4 is a cross-sectional view of the main parts during the dehydration operation of the washing machine.

Fig. 5 is a diagram showing steps in a washing cycle of the washing machine.

FIG. 6 is a timing chart showing the final dehydration operation of the washing machine.

7 is a configuration diagram of a pressurizing section of a washing machine in Embodiment 2 of the present invention.

FIG. 8 is a configuration diagram showing a configuration example of a conventional washing machine.

FIG. 9 is a configuration diagram showing another configuration example of a conventional washing machine.

FIG. 10 is a configuration diagram showing another configuration example of a conventional washing machine.

Claims (5)

A washing machine having: Washing tank, containing the objects to be washed and washing water; The pressing part presses the object to be cleaned in the cleaning tank; The suction part sucks the washing water from the washed object; A dewatering path, which connects the washing tank and the suction part in communication; An external air introduction unit for introducing external air into the aforementioned washing tank; A gas-liquid separation unit is provided in the aforementioned dehydration path, and separates the aforementioned washing water and air which have been attracted from the aforementioned object to be washed; and The control unit controls the washing operation including the dehydration action of the washing machine, The gas-liquid separation section includes: a water storage section that stores the aforementioned washing water that has been attracted; a water amount detection section that detects the amount of the washing water that is stored in the water storage section; and a pressurizing section that allows external air to flow into the aforementioned In the water storage department, In the dehydration operation, the control unit presses the object to be washed by the pressing unit, and attracts the washing water and the air by the suction unit, and detects the accumulation by the water amount detecting unit. After the washing water in the water storage unit reaches a predetermined amount, driving of the suction unit is stopped, and external air flows into the water storage unit through the pressurizing unit. The washing machine according to claim 1, wherein the pressurizing section is provided on a suction path connecting the gas-liquid separation section and the suction section. In the washing machine of claim 1 or 2, wherein the pressurizing section is constituted by an open valve, the open valve performs inflow and shielding of the external air into the water storage section. The washing machine according to any one of claims 1 to 3, wherein the gas-liquid separation section has a dewatering drainage path for draining the washing water accumulated in the water storage section toward the outside of the washing machine; and a dehydration drain valve provided at In the dewatering and draining path, the control section opens the dewatering and draining valve when the external air flows from the pressurizing section into the water storage section. The washing machine according to claim 4, wherein the pressurizing section further includes an air supply section that blows the external air into the water storage section, and the control section drives the air supply section when the dehydration and drainage valve is opened.