Washing machine and washing control method

Abstract

The invention relates to the technical field of household appliances, and discloses a washing machine and a washing control method. The washing machine comprises a clothes containing device, a clothes freezing device, a stain stripping device, a clothes rinsing device, a water storage device and a negative pressure pumping device. The clothes containing device is used for containing clothes to be washed. The clothes freezing device is used for forming covering ice crystals on fiber gaps and surfaces of clothes to be washed; the stain stripping device is used for breaking covering ice crystals, so that stains of the clothes to be washed are stripped to form stain particles; the clothes rinsing device is used for rinsing to-be-washed clothes so as to clean dirt particles; the water storage device is used for storing rinsing water of clothes to be washed; the negative pressure pumping device is used for conducting negative pressure pumping on the clothes containing device and the water storage device. No detergent participates in the whole washing process, the washing machine is more environment-friendly, only one-time rinsing is achieved, no detergent remains, the water consumption is extremely low, the washing time is greatly shortened, the time of a user is saved, and due to the fact that clothes are not washed through friction or beating, clothes abrasion can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a washing machine and a washing control method. Background Art

[0002] Existing washing machines inject detergent and water into the washing drum, soak the clothes in the washing drum in the detergent solution, and keep rotating the drum to wash the clothes through friction and beating. The amount of detergent added can only be based on the weight of the clothes, and cannot be added according to the type and amount of stains, so the addition cannot be accurate. If too little is added, the clothes will not be washed clean, and if too much is added, the stains will not be neutralized and will be discharged during rinsing. In order to ensure that the clothes are washed clean, the amount of detergent added is generally increased, which causes environmental pollution and leads to eutrophication of the discharged water. A standard washing process of an existing washing machine is about 1 hour, which is a long time. Long-term washing will also cause wear and tear on the fabric of the clothes, and the user experience is not good. At the same time, a standard washing cycle requires at least 3 water inlets, and the water consumption is also large. Summary of the invention

[0003] Based on the above problems, the purpose of the present invention is to provide a washing machine and a washing control method, which do not require detergent, are more environmentally friendly, are suitable for washing clothes of various materials, consume very little water, greatly reduce washing time, and save user time.

[0004] In order to achieve the above objectives, the following technical solutions are provided:

[0005] In a first aspect, the present invention provides a washing machine, comprising:

[0006] A clothes receiving device, used for receiving clothes to be washed;

[0007] A clothing freezing device, used for forming covering ice crystals on the fiber gaps and surfaces of the laundry;

[0008] A stain stripping device, used to break the covering ice crystals so as to strip the stains on the laundry to form stain particles;

[0009] A clothes rinsing device, used for rinsing the clothes to be washed to remove the stain particles;

[0010] A water storage device, used for storing rinsing water for the laundry;

[0011] A negative pressure extraction device is used to extract negative pressure from the clothing receiving device and the water storage device.

[0012] As an optional solution of the washing machine provided by the present invention, the clothing holding device includes a casing, an outer drum, an inner drum and a motor, the outer drum is arranged in the casing, the inner drum is rotatably arranged in the outer drum, and the motor is used to drive the inner drum to rotate.

[0013] As an optional solution of the washing machine provided by the present invention, the negative pressure extraction device includes a vacuum pump and an exhaust pipe, the motor is used to drive the vacuum pump, and the vacuum pump is connected to the water storage device through the exhaust pipe.

[0014] As an optional solution of the washing machine provided by the present invention, the water storage device includes a water tank, a drain valve, a drain pipe and a pumping pipe, the drain valve is arranged at the bottom of the water tank, the drain pipe is connected to the water tank through the drain valve, the vacuum pump is connected to the top of the water tank through the exhaust pipe, and the outer drum is connected to the water tank through the pumping pipe.

[0015] As an optional solution of the washing machine provided by the present invention, the clothes rinsing device includes a water inlet valve and a water inlet pipe, one end of the water inlet pipe is connected to the outer drum, and the other end is connected to an external water source through the water inlet valve.

[0016] As an optional solution of the washing machine provided by the present invention, an air intake valve is arranged on the outer cylinder, and the air intake valve includes a valve column, a valve core, a compression spring, a valve sleeve and a valve cap, the valve sleeve is arranged on the outer cylinder, the valve core is movably arranged in the valve sleeve, one end of the compression spring is connected to the outer cylinder, and the other end is connected to the valve core, the valve column is movably connected to the valve sleeve, one end of the valve column is connected to the valve cap, and the other end is connected to the valve core.

[0017] As an optional solution of the washing machine provided by the present invention, the clothing freezing device includes an ultrasonic atomizer, a water distribution pipe, a liquid nitrogen storage box and an insulation pipeline. The ultrasonic atomizer provides water vapor to the inner drum through the water distribution pipe, and the liquid nitrogen storage box provides liquid nitrogen to the inner drum through the insulation pipeline.

[0018] As an optional solution of the washing machine provided by the present invention, the clothing freezing device further includes a quantitative dispenser and a dilution mixer, the quantitative dispenser determines the dosage of the liquid nitrogen according to the weight of the laundry, and the dilution mixer is used to mix the liquid nitrogen and air.

[0019] As an optional solution of the washing machine provided by the present invention, the stain stripping device includes an ultrasonic generator, and the ultrasonic generator is used to vibrate the covering ice crystals.

[0020] In a second aspect, the present invention further provides a laundry control method, using the above-mentioned washing machine, comprising the following steps:

[0021] accommodating laundry by means of a laundry accommodating device;

[0022] The negative pressure pumping device is used to pump negative pressure into the clothing receiving device and the water storage device;

[0023] The clothing freezing device forms covering ice crystals on the fiber gaps and surfaces of the laundry;

[0024] The stain stripping device breaks the covering ice crystals to strip the stains on the laundry to form stain particles;

[0025] Rinse the laundry through a clothes rinse device to remove stain particles;

[0026] The rinse water for the laundry is stored in the water storage device.

[0027] The beneficial effects of the present invention are:

[0028] The washing machine and the washing control method provided by the present invention, when washing clothes, use the clothes holding device to hold the clothes to be washed, and then use the clothes freezing device to form covering ice crystals on the fiber gaps and surfaces of the clothes to be washed, so that the clothes are slightly frozen. During the freezing process, water will be fixed together with the stains, and the stains can be decomposed when thawing. Then, the covering ice crystals are broken by the stain stripping device to strip the stains on the clothes to be washed to form stain particles, and then the clothes to be washed are rinsed by the clothes rinsing device to clean the stain particles, and the rinsing water of the clothes to be washed is stored by the water storage device. The clothes holding device and the water storage device are negatively pressurized by the negative pressure pumping device. Before the atomized water vapor is sprayed in, the inner drum is first negatively pressurized. The work of pressure is to maintain the set negative pressure in the drum, and then spray atomized water into the inner drum. In this way, under lower air pressure, the atomized water particles are easier to gasify into water vapor, and the moisture on the surface and gaps of clothing fibers is more uniform and less, and it is easier to freeze; when the negative pressure is continuously maintained, after the amount of water vapor sprayed reaches the set value, atomized liquid nitrogen or liquefied air is sprayed. Compared with the liquid nitrogen or liquefied air in agglomerates, the surface area of ​​liquid nitrogen or liquefied air particles is abnormally larger. Under lower air pressure, they will gasify quickly. The gasification process is a process of absorbing energy, which will accelerate the process of liquid nitrogen or liquefied air absorbing heat, so that the water vapor on the surface of the clothes will quickly condense into ice, and the ice crystals are small and uniform. There is no detergent involved in the entire washing process, which is more environmentally friendly. Only one rinse, no detergent residue and very little water consumption, the washing time is greatly reduced, saving user time, because the clothes are not washed by friction or falling, the wear of the clothes will be greatly reduced, suitable for washing clothes of various materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1is a structural schematic diagram of a washing machine provided in a specific embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of an intake valve provided in a specific embodiment of the present invention.

[0032] In the figure:

[0033] 100, housing; 200, door; 300, window gasket; 410, water distribution pipe; 420, water inlet pipe; 430, drain pipe; 440, water extraction pipe; 450, air inlet valve; 451, valve column; 452, sealing gasket; 453, valve core; 454, compression spring; 455, valve sleeve; 456, valve cap; 460, drain valve; 470, water storage tank; 480, vacuum pump; 490, air extraction pipe; 510, outer cylinder; 520, inner cylinder; 600, motor; 610, transmission belt;

[0034] 700. Ultrasonic generator; 810. Liquid nitrogen storage box; 820. Insulated pipeline; 830. Dosing device; 840. Dilution mixer; 900. Ultrasonic atomizer. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figure 1 to Figure 2 As shown, this embodiment provides a washing machine, which includes a clothes holding device, a clothes freezing device, a stain stripping device, a clothes rinsing device, a water storage device and a negative pressure pumping device, wherein the clothes holding device is used to hold clothes to be washed; the clothes freezing device is used to form covering ice crystals on the fiber gaps and surfaces of the clothes to be washed; the stain stripping device is used to break the covering ice crystals so that the stains on the clothes to be washed are stripped to form stain particles; the clothes rinsing device is used to rinse the clothes to be washed to clean the stain particles; the water storage device is used to store rinsing water for the clothes to be washed; and the negative pressure pumping device is used to pump negative pressure on the clothes holding device and the water storage device.

[0039] When washing clothes, the clothes to be washed are accommodated by the clothes holding device, and then the clothes freezing device forms covering ice crystals on the fiber gaps and surfaces of the clothes to be washed, so that the clothes are slightly frozen. During the freezing process, water will be fixed together with the stains, and the stains can be disintegrated when thawing. Then the stain stripping device breaks the covering ice crystals to strip the stains on the clothes to be washed to form stain particles, and then the clothes to be washed are rinsed by the clothes rinsing device to clean the stain particles, and the rinsing water of the clothes to be washed is stored by the water storage device. The clothes holding device and the water storage device are subjected to negative pressure extraction by the negative pressure extraction device. Before the atomized water vapor is sprayed in, the inner drum 520 is first subjected to negative pressure extraction to make the inner drum 520 have a negative pressure. After maintaining the set negative pressure, spray atomized water into the inner drum 520, so that under lower air pressure, the atomized water particles are more easily vaporized into water vapor, and the moisture on the surface and gaps of clothing fibers is more uniform and less, and it is also easier to freeze; when the negative pressure is continuously maintained, after the amount of water vapor sprayed reaches the set value, spray atomized liquid nitrogen or liquefied air. Compared with the liquid nitrogen or liquefied air in agglomerates, the surface area of ​​liquid nitrogen or liquefied air particles is abnormally larger. Under lower air pressure, they will be quickly vaporized. The vaporization process is a process of absorbing energy, which will accelerate the process of liquid nitrogen or liquefied air absorbing heat, so that the water vapor on the surface of the clothing will quickly condense into ice, and the ice crystals are small and uniform. There is no detergent involved in the entire washing process, which is more environmentally friendly. Only one rinse, no detergent residue and very little water consumption, the washing time is greatly reduced, saving user time, because the clothes are not washed by friction or falling, the wear of the clothes will be greatly reduced, and it is suitable for washing clothes of various materials.

[0040] In some embodiments, the clothing storage device includes a housing 100, an outer drum 510, an inner drum 520 and a motor 600. The outer drum 510 is disposed in the housing 100, and the inner drum 520 is rotatably disposed in the outer drum 510. The motor 600 is used to drive the inner drum 520 to rotate. The inner drum 520 is used to hold the laundry, and the inner drum 520 is driven by the motor 600 to rotate. When air is sprayed into the inner drum 520 to dilute the liquid nitrogen, if the inner part of the outer drum 510 is not evacuated to a negative pressure in advance, spraying air into the inner drum 520 will increase the pressure, making it difficult or impossible to charge. When the outer drum 510 has an opening, charging the diluted liquid nitrogen will cause cold air to leak, resulting in waste. The clothing storage device also includes a door 200 and a window pad 300. The door 200 can be rotatably set on the casing 100. The window pad 300 connects the casing 100 and the washing drum and is a flexible multi-pleated drum structure. When the door 200 is closed, it rests on the window pad 300 to achieve sealing.

[0041] In some embodiments, the clothing freezing device includes an ultrasonic atomizer 900, a water distribution pipe 410, a liquid nitrogen storage box 810 and an insulation pipeline 820. The ultrasonic atomizer 900 provides water vapor to the inner cylinder 520 through the water distribution pipe 410, and the liquid nitrogen storage box 810 provides liquid nitrogen to the inner cylinder 520 through the insulation pipeline 820. The liquid nitrogen storage box 810 is used to store liquid nitrogen. Liquid nitrogen has a high cold density. Liquid nitrogen is a byproduct of producing liquid oxygen and is cheap. The insulation pipeline 820 prevents liquid nitrogen from losing cold during the delivery process and prevents the outer wall of the pipeline from freezing. The ultrasonic atomizer 900 uses the water supplied and stored by the water inlet pipe 420, and produces fine particles of water mist after purification and / or softening, which is introduced into the inner cylinder 520 through the water distribution pipe 410.

[0042] Optionally, the clothing freezing device further comprises a quantitative dispenser 830 and a dilution mixer 840. The quantitative dispenser 830 determines the amount of liquid nitrogen to be dispensed according to the weight of the laundry to be washed, and the dilution mixer 840 is used to mix the liquid nitrogen with air. After determining how much liquid nitrogen is needed to be dispensed according to the weight and type of the laundry, the controller issues an instruction to the quantitative dispenser 830, and the quantitative dispenser 830 extracts a specific amount of liquid nitrogen from the liquid nitrogen storage box 810 and transmits it to the dilution mixer 840 through the insulation pipeline 820. The dilution mixer 840 mixes the liquid nitrogen with air of a specific volume and a specific temperature according to the weight of the laundry, and then puts it into the inner drum 520. The purpose of this is to quickly make the laundry fully slightly frozen, so as to avoid a stream of liquid nitrogen being directly sprayed onto the laundry and damaging the laundry when the inner drum 520 rotates.

[0043] In some embodiments, the stain stripping device includes an ultrasonic generator 700, which is used to vibrate the covered ice crystals. One or more ultrasonic generators 700 are provided, which penetrate the side of the door 200 facing the inner drum 520 opening, and are used to emit ultrasonic waves of specific energy to the slightly frozen clothes in the inner drum 520. Ultrasonic waves are used to vibrate clothes at high frequencies to separate the clothes from the stains. Since the clothes are soft at room temperature, the energy is dispersed when the ultrasonic waves act on the clothes, and a satisfactory effect cannot be achieved. However, ultrasonic waves have excellent cleaning effects on stains on hard solid objects, such as ultrasonic cleaning of glasses, ultrasonic oil removal of workpieces, and ultrasonic rust removal. Therefore, the clothes are first slightly frozen (the whole is still soft, but the fibers are partially frozen), and then high-energy ultrasonic waves are applied to the clothes. The ultrasonic waves will decompose the micro-ice solidified with the stains. After a period of action, they are heated or naturally heated to allow the ice to disintegrate part of the stains during the melting process. During the freezing and thawing process, the expansion coefficients of the stains, clothing fibers and ice crystals are different, which can also cause the stains to separate from the surface of the clothing fibers.

[0044] Optionally, the clothes rinsing device includes a water inlet valve and a water inlet pipe 420, one end of the water inlet pipe 420 is connected to the outer tub 510, and the other end is connected to an external water source through the water inlet valve. The water inlet valve is used to connect external tap water, and water enters the water inlet pipe 420 and the water distribution pipe 410 through the water inlet valve, thereby controlling the rinsing water intake and the atomization water intake.

[0045] In some embodiments, the negative pressure device includes a vacuum pump 480 and an air extraction pipe 490, and the motor 600 is used to drive the vacuum pump 480, and the vacuum pump 480 is connected to the water storage device through the air extraction pipe 490. The vacuum pump 480 can be set on the outer cylinder 510, and the rotor extending outward from the motor 600 is used as a drive shaft, and driven by the transmission belt 610. In this way, there is no need to equip the vacuum pump 480 with a separate drive source, which saves costs. At the same time, because the entire washing process requires negative pressure, the existing motor 600 can be used to drive it. In the humidification stage, the negative pressure can vaporize the tiny water particles, which are more evenly stained on the clothes, and the water consumption is less. The less water consumption is also more convenient for rapid freezing. In the freezing stage of spraying liquid nitrogen particles, the negative pressure can vaporize the liquid nitrogen particles more quickly, thereby accelerating the heat absorption process and quickly freezing the water in the clothes.

[0046] Optionally, the water storage device includes a water storage tank 470, a drain valve 460, a drain pipe 430 and a water pumping pipe 440, the drain valve 460 is arranged at the bottom of the water storage tank 470, the drain pipe 430 is connected to the water storage tank 470 through the drain valve 460, the vacuum pump 480 is connected to the top of the water storage tank 470 through the air suction pipe 490, and the outer cylinder 510 is connected to the water storage tank 470 through the water suction pipe 440. In the drainage stage, the vacuum pump 480 works to suck air, and water can be pumped into the water storage tank 470 through the water suction pipe 440 for temporary storage. The water suction pipe 440 goes deep into the top of the water storage tank 470 but does not touch the top, and the air suction pipe 490 does not face the water suction pipe 440, so as to prevent water from entering the air suction pipe 490. The first end of the drain pipe 430 is connected to the water storage tank 470, and the second end of the drain pipe 430 is led out of the washing machine and connected to the floor drain. The connection between the first end of the drain pipe 430 and the water storage tank 470 is located at the bottom of the water storage tank 470, so as to drain the water temporarily stored in the water storage tank 470. A drain valve 460 is arranged at the bottom of the water storage tank 470 and in the drain pipe 430. The drain valve 460 is hinged at the bottom of the water storage tank 470, and a torsion spring is arranged at the hinge axis to provide a slight torsion. In the initial state, it is almost attached to the lower surface of the water storage tank 470. When the vacuum pump 480 is working and the water storage tank 470 is under negative pressure, the drain valve 460 will quickly close the water storage tank 470 from the bottom, so that the water storage tank 470 and the outer cylinder 510 become a closed space. When there is water inside the water tank 470 and the vacuum pump 480 stops working, the water tank 470 is connected to the air outlet of the vacuum pump 480, and the water will overcome the slight torque of the drain valve 460 and be discharged from the drain pipe 430 without any residue.

[0047] In some embodiments, an air inlet valve 450 is provided on the outer cylinder 510, and the air inlet valve 450 includes a valve column 451, a valve core 453, a compression spring 454, a valve sleeve 455 and a valve cap 456. The valve sleeve 455 is provided on the outer cylinder 510, and the valve core 453 is movably provided in the valve sleeve 455. One end of the compression spring 454 is connected to the outer cylinder 510, and the other end is connected to the valve core 453. The valve column 451 is movably connected to the valve sleeve 455, and one end of the valve column 451 is connected to the valve cap 456, and the other end is connected to the valve core 453. When dehydrating and draining, if the space formed by the outer cylinder 510 and the water storage tank 470 is completely closed, it may cause the inability to inhale and drain, or when the negative pressure is too low, the outer cylinder 510 may be damaged by the atmospheric pressure. Therefore, an air inlet valve 450 is provided on the outer cylinder 510. When the negative pressure reaches a set value, the air inlet valve 450 automatically opens. On the one hand, it can continue to pump air and drain water, and on the other hand, it can protect the outer cylinder 510 and the water tank 470 from being damaged by excessively low negative pressure.

[0048] A cylindrical boss with a center hole can be provided on the outer tube 510, and a thread or buckle is provided on the outer side of the boss, and the corresponding structure of the air intake valve 450 is installed on the boss through the thread or buckle. The lower end of the valve sleeve 455 is open, and the upper end of the valve sleeve 455 has a cylindrical structure with a center hole, and the inner circumferential side is provided with a thread, which is used to connect with the boss of the outer tube 510, and the internal space is used to install the compression spring 454, the valve core 453 and the sealing gasket 452. The valve cap 456 is connected to the valve column 451, which is also a cylindrical structure with an opening at the lower end. It is arranged on the upper part of the valve sleeve 455 to prevent dust particles from falling on the sealing gasket 452, resulting in poor sealing and the next negative pressure pumping work cannot be performed. The valve core 453 is supported by the compression spring 454 to play a bearing role. The valve column 451 is used to connect the valve cap 456 and the valve core 453. The sealing gasket 452 is made of flexible materials such as rubber and silicone, and is attached to the upper surface of the valve core 453 to play a sealing role. The set negative pressure limit is ensured by the compression spring 454 . When the elastic force setting value of the compression spring 454 is exceeded, the external atmospheric pressure breaks through the valve core 453 and enters the outer tube 510 .

[0049] It should be noted that a pressure gauge can also be installed on the water storage tank 470 or the outer cylinder 510 to monitor the negative pressure value so that the main control module can control whether the motor 600 continues to work. When the vacuum pump 480 is driven by the motor 600 alone, the magnitude of the negative pressure can be determined by its output power or working current. During the process of pumping negative pressure, the lower the negative pressure, the greater the load of the vacuum pump 480 and the greater the output power.

[0050] The present embodiment also provides a laundry control method, which uses the above-mentioned washing machine and includes the following steps: first, accommodating the laundry to be washed by a laundry accommodating device; second, applying negative pressure to the laundry accommodating device and the water storage device by a negative pressure pumping device; third, forming covering ice crystals on the fiber gaps and surfaces of the laundry to be washed by a laundry freezing device; third, breaking the covering ice crystals by a stain stripping device to strip the stains on the laundry to be washed to form stain particles; then, rinsing the laundry to be washed by a laundry rinsing device to clean the stain particles; and finally, storing the rinsing water of the laundry to be washed by the water storage device.

[0051] Specifically, after the washing machine is started, the weighing and clothing material identification procedures are executed to determine the required amount of water for atomization, liquid nitrogen or liquefied air. During the rotation of the washing machine, negative pressure is simultaneously pumped. After the negative pressure of the water storage tank 470 is generated, the drain valve 460 closes the water storage tank 470, and the negative pressure continues to increase. After the negative pressure reaches the set value, the ultrasonic atomizer 900 sprays a set amount of atomized water into the inner drum 520, and the atomized water is quickly converted into water vapor adsorbed on the surface and gaps of clothing fibers. The washing machine continues to operate, and the negative pressure is maintained or increased. At this time, liquid nitrogen or liquefied air particles are quickly sprayed. Under the action of negative pressure, the liquid nitrogen or liquefied air particles are quickly vaporized, absorbing heat to condense the water vapor adsorbed on the clothing fibers and fiber gaps into ice. At this time, the ultrasonic generator 700 is turned on. Under the negative pressure, the micro-ice on the clothing fibers and fiber gaps is more easily broken by ultrasonic waves. When the micro-ice is broken, the mixed stains are also peeled off. Some stains that are not easy to peel off are also loosened by the vibration generated by ultrasonic waves due to hardening. After the ultrasonic wave acts for a specific time, water is added to rinse the clothes. During the rinsing process, the motor 600 rotates forward and reverse at a low speed and high frequency. At this time, negative pressure will not accumulate and water will not be pumped into the water tank 470. When drainage is required, the motor 600 rotates forward at a high speed, and the vacuum pump 480 pumps air. Water will flow into the water tank 470 under negative pressure and be temporarily stored in the water tank 470. When the negative pressure approaches the set value, it is difficult to pump air, the air flow in the pumping pipe 440 becomes smaller, and it is impossible to continue pumping water. When the negative pressure is too large and exceeds the set value, the air inlet valve 450 opens, enters the atmosphere, and the air flow increases, and water can continue to be pumped. After the spin drying is completed, the motor 600 stops, the negative pressure in the water tank 470 disappears, the drain valve 460 opens, and the water tank 470 is drained. Since there is no need to worry about detergent residue during rinsing and the water consumption is very small, the water tank 470 can store the entire rinsing water. Once started, without interruption, the whole washing process of humidification, freezing, water intake, drainage, and dehydration can be completed.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A washing machine, characterized in that: include: A clothes receiving device, used for receiving clothes to be washed; A clothing freezing device, used for forming covering ice crystals on the fiber gaps and surfaces of the laundry; A stain stripping device, used to break the covering ice crystals so as to strip the stains on the laundry to form stain particles; A clothes rinsing device, used for rinsing the clothes to be washed to remove the stain particles; A water storage device, used for storing rinsing water of the laundry; A negative pressure extraction device is used to extract negative pressure from the clothing receiving device and the water storage device.

2. The washing machine according to claim 1, characterized in that: The clothing storage device comprises a housing (100), an outer drum (510), an inner drum (520) and a motor (600); the outer drum (510) is arranged in the housing (100); the inner drum (520) is rotatably arranged in the outer drum (510); and the motor (600) is used for driving the inner drum (520) to rotate.

3. The washing machine according to claim 2, characterized in that: The negative pressure extraction device comprises a vacuum pump (480) and an air extraction pipe (490), the motor (600) is used to drive the vacuum pump (480), and the vacuum pump (480) is connected to the water storage device through the air extraction pipe (490).

4. The washing machine according to claim 3, characterized in that: The water storage device comprises a water storage tank (470), a drainage valve (460), a drainage pipe (430) and a water pumping pipe (440); the drainage valve (460) is arranged at the bottom of the water storage tank (470); the drainage pipe (430) is connected to the water storage tank (470) through the drainage valve (460); the vacuum pump (480) is connected to the top of the water storage tank (470) through the air pumping pipe (490); and the outer cylinder (510) is connected to the water storage tank (470) through the water pumping pipe (440).

5. The washing machine according to claim 2, characterized in that: The clothes rinsing device comprises a water inlet valve and a water inlet pipe (420); one end of the water inlet pipe (420) is connected to the outer tub (510), and the other end is connected to an external water source through the water inlet valve.

6. The washing machine according to claim 2, characterized in that: An air intake valve (450) is arranged on the outer tube (510), and the air intake valve (450) comprises a valve column (451), a valve core (453), a compression spring (454), a valve sleeve (455) and a valve cap (456). The valve sleeve (455) is arranged on the outer tube (510), and the valve core (453) is movably arranged in the valve sleeve (455). One end of the compression spring (454) is connected to the outer tube (510), and the other end is connected to the valve core (453). The valve column (451) is movably connected to the valve sleeve (455), and one end of the valve column (451) is connected to the valve cap (456), and the other end is connected to the valve core (453).

7. The washing machine according to claim 2, characterized in that: The clothing freezing device comprises an ultrasonic atomizer (900), a water distribution pipe (410), a liquid nitrogen storage box (810) and a heat preservation pipeline (820); the ultrasonic atomizer (900) provides water vapor to the inner cylinder (520) through the water distribution pipe (410), and the liquid nitrogen storage box (810) provides liquid nitrogen to the inner cylinder (520) through the heat preservation pipeline (820).

8. The washing machine according to claim 7, characterized in that: The clothing freezing device further comprises a quantitative dispenser (830) and a dilution mixer (840), wherein the quantitative dispenser (830) determines the dosage of the liquid nitrogen according to the weight of the laundry, and the dilution mixer (840) is used to mix the liquid nitrogen and air.

9. The washing machine according to claim 1, characterized in that: The stain stripping device comprises an ultrasonic generator (700), and the ultrasonic generator (700) is used to perform vibration treatment on the covering ice crystals.

10. A laundry control method, characterized in that: The washing machine according to any one of claims 1 to 9 comprises the following steps: accommodating laundry by means of a laundry accommodating device; The negative pressure pumping device is used to pump negative pressure into the clothing receiving device and the water storage device; The clothing freezing device forms covering ice crystals on the fiber gaps and surfaces of the laundry; The stain stripping device breaks the covering ice crystals to strip the stains on the laundry to form stain particles; Rinse the laundry through a clothes rinse device to remove stain particles; The rinse water for the laundry is stored in the water storage device.

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