CN117552227A - Control method of drum washing machine and drum washing machine - Google Patents

Abstract

The invention discloses a control method of a drum washing machine and the drum washing machine. The ventilation hole is opened to ventilate the inner cylinder and the outside, so that the air pressure in the inner cylinder can be balanced, and the peculiar smell in the inner cylinder can be removed.

Description

Control method of drum washing machine and drum washing machine

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a control method of a drum washing machine and the drum washing machine.

Background

The washing machine is used as a household appliance which is most widely used in daily life of people, helps people get rid of the trouble of washing clothes, and brings great convenience to the life of people. However, the existing washing machine generally comprises an outer cylinder and an inner cylinder rotatably arranged in the outer cylinder, a plurality of dewatering holes are distributed on the cylinder wall of the inner cylinder, and in the process of washing clothes, washing water between the inner cylinder and the outer cylinder is not utilized, so that waste of the washing water between the inner cylinder and the outer cylinder is caused, dirt generated by the clothes in the washing process can be deposited between the inner cylinder and the outer cylinder along with water flow entering between the inner cylinder and the outer cylinder, and the washing effect on the clothes can be seriously affected by long-time accumulation of dirt between the inner cylinder and the outer cylinder along with long-time use of the washing machine, so that the use experience of users is reduced.

In order to solve the above problems, there is a drum washing machine having a non-porous inner tub, in which an inner tub door is installed to be opened/closed at an inner tub opening of the non-porous inner tub, thereby forming an inner chamber in which washing water is independently contained, so that washing water is contained in the inner tub during washing and rinsing, no water is present between the inner tub and the outer tub, a dirt problem between the inner tub and the outer tub is solved, and simultaneously, a washing water consumption is reduced. Because the inner cylinder is a non-porous inner cylinder, the problems of unbalanced air pressure in the inner cylinder, easy smell in the inner cylinder and the like are often accompanied, for example, when the non-porous inner cylinder dehydrates, air flows along the radial direction under the action of centrifugal force, the pressure at the center of the inner cylinder is more easily lower than the pressure at the periphery side, and the pressure difference is generated in the inner cylinder, so that the vibration noise problem of the inner cylinder and the inner and outer cylinder assemblies is caused; for another example, the interior of the non-porous inner cylinder is closed for a long period of time, resulting in a mold-developing odor caused by moisture in the interior of the non-porous inner cylinder.

The present invention has been made in view of this.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a control method of a drum washing machine and the drum washing machine, wherein the air pressure inside the inner drum can be balanced and the peculiar smell inside the inner drum can be removed by opening the air holes to ventilate the inner drum and the outer part of the inner drum.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

the invention provides a control method of a drum washing machine, which comprises an inner drum capable of containing washing water when washing clothes, wherein the inner drum is provided with ventilation holes, the drum washing machine is provided with a ventilation program, and the inner part and the outer part of the inner drum are ventilated by opening the ventilation holes when the ventilation program is executed.

Further, after the drum door of the inner drum is closed, the air holes are opened when the inner drum rotates and does not contain washing water;

or after the drum door of the inner drum is closed, the ventilation holes are opened when the inner drum is stopped rotating and the washing water is contained in the inner drum.

Further, according to the washing parameters of the inner cylinder, the amount of gas flowing through the ventilation holes is adjusted, and the ventilation amount of the inner cylinder and the outside for ventilation is changed.

Further, before the door of the inner cylinder is opened, the ventilation holes are opened, ventilation is carried out on the inner part of the inner cylinder, and then the door of the inner cylinder is opened, so that clothes are put into the inner cylinder or taken out from the inner cylinder.

Further, when the inner cylinder is in the dehydration stage, the ventilation holes are opened, air flow is introduced into the inner middle part of the inner cylinder, and the air pressure of the inner middle part and the periphery of the inner cylinder is balanced; or the ventilation holes are opened, the air flow at the inner periphery side of the inner cylinder is discharged out of the inner cylinder, and the air pressure at the middle part and the periphery side in the inner cylinder is balanced.

Further, the dehydration rotating speed of the inner cylinder is accelerated to a first preset rotating speed, and the opening of the air holes is the first opening in the process that the inner cylinder rotates at the first preset rotating speed; and obtaining the vibration quantity of the inner cylinder, judging whether the vibration quantity is smaller than or equal to the set vibration quantity, if so, increasing the dehydration rotating speed of the inner cylinder to a second preset rotating speed, and increasing the opening of the air holes to a second opening in the rotating process of the inner cylinder at the second preset rotating speed.

Further, when the inner cylinder is in the dehydration stage, the water outlet on the inner cylinder is opened, the air holes are opened, the water outlet and the air holes simultaneously discharge washing water out of the inner cylinder, after dehydration, the inner cylinder stops rotating, the water outlet is closed, and the air holes are continuously opened for a period of time.

Further, when the inner cylinder is in the main washing stage, the inner cylinder intermittently rotates, and when the inner cylinder stops rotating, the ventilation holes are opened, the gas with set pressure is introduced into the inner cylinder, and the gas is dissolved in washing water to form bubble water; after the inner cylinder rotates again, the washing water containing bubbles washes clothes under the rotation of the inner cylinder.

Further, before the inner cylinder enters the main washing stage, when water is fed into the inner cylinder, if the electromagnetic valve of the drum washing machine suddenly cuts off water, the air holes are opened, external air enters the inner cylinder, and the air pressure in the inner cylinder is balanced.

The invention also provides a drum washing machine, and the control method provided by the technical scheme is adopted.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:

the ventilation hole is opened to ventilate the inner cylinder and the outside, so that the air pressure in the inner cylinder can be balanced, and the peculiar smell in the inner cylinder can be removed.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

fig. 1 is a flowchart of a control method of a drum washing machine according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an inner cylinder according to an embodiment of the present invention.

Icon: 1-an inner cylinder; 11-the inner middle part of the inner cylinder; 12-inner circumference side of inner cylinder; 2-an inner cylinder shaft; 3-ventilation holes; 4-sealing gasket; 5-an electromagnetic valve; 6-conductive slip ring.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the present invention provides a control method of a drum washing machine including an inner tub 1 capable of containing washing water when washing laundry, an air vent 3 provided on the inner tub, the drum washing machine having an air vent program, and ventilating the inside and the outside of the inner tub 1 by opening the air vent 3 when executing the air vent program.

In the embodiment of the invention, the ventilation holes 3 are opened to ventilate the inside and the outside of the inner cylinder 1, so that the air pressure in the inner cylinder 1 can be balanced, and the peculiar smell in the inner cylinder 1 can be removed.

The drum washing machine comprises a shell, an outer drum arranged in the shell and an inner drum 1 rotatably arranged in the outer drum, wherein a drum door is arranged at the drum opening of the inner drum 1 and used for sealing the inner drum 1, a water outlet is formed in the inner drum 1, water discharged from the inner drum 1 is discharged through the outer drum, the drum opening of the outer drum is opened, an air hole 3 is used for communicating the inner drum with the outer drum, and air outside the shell is ventilated with the inner drum through the drum opening of the outer drum and the air hole 3.

The control valve is arranged on the air hole 3, and is controlled by a control system of the drum washing machine, so that the air hole 3 is opened and closed; the air holes 3 are opened, the inside and the outside of the inner cylinder 1 are ventilated mutually, and the air holes 3 are closed, so that water drops in the inner cylinder 1 can be prevented from splashing outside the inner cylinder 1; for example, for a drum washing machine with a drying function, after the drying is completed, the ventilation holes 3 are opened, so that the inside of the inner drum 1 is rapidly cooled; in the drying process, the air holes 3 are closed, so that the air leakage of the clothes treatment device is avoided. When the air vent 3 does not close or open the air vent 3 for a long time, the air vent 3 is possibly failed, and the drum washing machine alarms.

Sealing gasket 4 can be arranged between the air holes 3 and the control valve, so that the tightness between the air holes 3 and the control valve is improved, the washing water in the inner cylinder 1 is prevented from leaking, the air leakage phenomenon can not occur at the contact surface of the control valve and the air holes 3, and the ventilation efficiency of the air holes 3 is improved.

As shown in fig. 2, specifically, at least one ventilation hole 3 is provided at the bottom of the inner cylinder 1, and the ventilation hole 3 is provided on the bottom of the inner cylinder higher than the rotation center axis of the inner cylinder 1 and always higher than the highest water level position in the inner cylinder 1.

The washing program executed by the inner tub 1 includes a water inlet stage, a main washing stage, a rinsing stage, and a dehydrating stage, which are sequentially performed.

As shown in fig. 1, in the embodiment of the present invention, after the door of the inner tub 1 is closed, the ventilation holes 3 are opened when the inner tub rotates without washing water.

In the embodiment of the invention, for example, in the dehydration stage, the inner barrel door is in a closed state, the inner barrel does not contain washing water, and the inner barrel 1 rotates at a set rotating speed;

when the drum washing machine is used for dewatering, air flows along the radial direction under the action of centrifugal force, the pressure of the center of the inner drum is less than the pressure of the periphery side, and pressure difference is generated in the inner drum 1, so that the vibration noise problem of the inner drum 1 and even the inner drum assembly and the outer drum assembly is caused; therefore, in order to avoid the above problem, it is necessary to balance the air pressure inside the inner cylinder with the air pressure on the circumferential side, and the means for balancing the air pressure inside the inner cylinder 1 with the air pressure on the circumferential side includes:

mode one: when the inner cylinder is in a dehydration stage, an air hole 3 is opened, air flow is introduced into the middle part of the inner cylinder 1, the air pressure of the middle part of the inner cylinder is increased, the air pressure of the middle part and the periphery side of the inner cylinder 1 is balanced, wherein the air hole 3 is arranged close to a rotation center shaft and can correspond to the middle part of the inner cylinder 1;

mode two: when the inner cylinder is in a dehydration stage, the air holes 3 are opened, air flow on the inner periphery side of the inner cylinder 1 is discharged out of the inner cylinder, the air pressure on the inner periphery side of the inner cylinder 1 is reduced, the air pressure on the middle part and the periphery side in the inner cylinder 1 is balanced, and the positions of the air holes 3 correspond to the inner periphery side of the inner cylinder 1.

Mode three: when the inner cylinder is in a dehydration stage, the ventilation holes 3 are opened, air flow on the inner periphery side of the inner cylinder 1 is discharged out of the inner cylinder, then discharged air flow is guided to the inner middle part of the inner cylinder 1, the air pressure of the inner middle part of the inner cylinder 1 is increased, the air pressure on the inner periphery side of the inner cylinder is reduced, the air pressure on the inner middle part and the air pressure on the periphery side of the inner cylinder 1 are balanced, wherein the bottom of the inner cylinder is provided with the first ventilation holes 3 corresponding to the inner middle part of the inner cylinder and the second ventilation holes 3 corresponding to the inner periphery side of the inner cylinder 1, the first ventilation holes 3 and the second ventilation holes 3 are communicated through ventilation pipelines, the ventilation pipelines are provided with control valves, when ventilation is performed, the control valves are opened, when ventilation is not performed, the control valves are closed, or the first ventilation valves are provided with the first ventilation valves, the second ventilation valves are closed through ventilation pipelines. The air flow in the high-pressure area inside the inner cylinder is led back to the low-pressure area through the ventilation pipeline, so that self-balancing of the air flow is realized, and external air is not required to be additionally led in.

Further, when the inner cylinder 1 is in the dehydration stage, the dehydration rotating speed of the inner cylinder 1 is accelerated to a first preset rotating speed, and in the process that the inner cylinder rotates at the first preset rotating speed, the opening of the air holes 3 is the first opening; and obtaining the vibration quantity of the inner cylinder, judging whether the vibration quantity is smaller than or equal to the set vibration quantity, if so, increasing the dehydration rotating speed of the inner cylinder 1 to a second preset rotating speed, and increasing the opening of the air holes 3 to a second opening in the rotating process of the inner cylinder at the second preset rotating speed.

For example, for the case of opening the ventilation holes 3 and introducing air flow into the middle part of the inner cylinder, after the dehydration procedure is started, the vibration amount of the laundry treatment device obtained in the dehydration process is compared with the preset vibration amount, and whether the dehydration rotation speed is adjusted or not is determined according to the comparison result, that is, the automatic control of the dehydration rotation speed is performed according to the comparison result of the detected vibration amount of the whole machine and the preset vibration amount, so as to achieve the optimal dehydration and balancing effects under different load conditions, that is, the dehydration rotation speed is furthest improved while the vibration amount generated during the dehydration operation of the whole machine is within the safe range, further the dehydration effect is improved, the running noise of the product and the noise interference to users and surrounding residents are reduced, the probability of vibration faults is reduced, and the service performance and market competitiveness of the product are improved.

Further, according to the washing parameters of the inner cylinder, the amount of the air flowing through the air holes 3 is adjusted, and the ventilation amount of the inner cylinder for ventilation is changed. For example, the dehydration speed is controlled to be accelerated to a first preset speed, and the first preset speed is used for rotating for a first preset time, so that the situation that the vibration quantity is too large to generate vibration faults due to the adoption of the larger dehydration speed can be avoided by reasonably setting the dehydration speed and the dehydration time in the initial stage while ensuring the dehydration effect, and the vibration quantity generated by the whole machine during working is in a safe range because the total weight of the clothes to be washed and the water in the initial dehydration stage is larger.

If the detected vibration quantity is smaller than or equal to the preset vibration quantity, the current vibration quantity generated by dehydration is in a controllable safety range, so that the dehydration rotating speed is controlled to be increased from the first preset rotating speed to the second preset rotating speed, and the second preset rotating speed is controlled to rotate for a second preset time so as to accelerate the dehydration of the water quantity, further, the dehydration effect is improved under the condition that the use safety and reliability of the whole machine are ensured, and the water content of clothes is reduced; if the detected vibration quantity is larger than the preset vibration quantity, the current dehydration produces larger vibration quantity, so that the dehydration rotating speed is not suitable to be increased, and the dehydration rotating speed is enabled to rotate for a second preset time at the first preset rotating speed, so that the use safety of the whole machine is ensured, and the situation of vibration faults is avoided.

When the first preset rotating speed is used for rotating for a first preset time, the opening of the air hole 3 is the first opening in the first preset time, when the second preset rotating speed is used for rotating for a second preset time, the opening of the air hole 3 is the second opening in the second preset time, and the first preset rotating speed is smaller than the second preset rotating speed, and the pressure difference between the middle part and the periphery side in the inner cylinder is larger when the second preset rotating speed is used for rotating, so that the opening of the inner cylinder is lifted to the second opening from the first opening when the second preset rotating speed is used for rotating, and under the condition that the opening time of the air hole 3 is the same, the air hole 3 at the second opening can increase the amount of air inflow into the inner cylinder, so that the air pressure in the inner cylinder can be kept balanced as soon as possible.

Further, when the inner cylinder is in the dehydration stage, the water outlet on the inner cylinder is opened, the air holes 3 are opened, the washing water is discharged out of the inner cylinder through the water outlet and the air holes 3, after the dehydration is finished, the inner cylinder stops rotating, the water outlet is closed, and the air holes 3 are continuously opened for a period of time.

For example, in order to realize dehydration and drainage of the pore-free inner cylinder, the air flow is introduced into the middle part of the inner cylinder by opening the air holes 3, the water outlet is formed in the peripheral wall of the inner cylinder, a normally closed centrifugal valve is arranged on the water outlet, and the water outlet is opened to drain when the inner cylinder reaches a certain rotating speed by the centrifugal valve, so that the air flow on the inner peripheral side of the inner cylinder is discharged between the inner cylinder and the outer cylinder by the water outlet in the high-speed dehydration process, and is guided back to the middle part of the inner cylinder by the air-permeable pipeline to perform air pressure balance.

When the inner cylinder reaches the set rotation speed to dehydrate and drain, the water outlet is opened, the air hole 3 is in an opened state when the water outlet is opened, the air hole 3 assists the water outlet to drain, and after the inner cylinder finishes dehydrating, the air hole 3 is continuously opened for a period of time, so that the air hole 3 can drain moisture and peculiar smell in the inner cylinder, for example, when a user forgets to take clothes out of the inner cylinder in time, the air hole 3 is continuously opened after the dehydrating is finished, and the clothes are prevented from mildewing in the cylinder and the like.

In summary, during the dehydration stage, ventilation is performed between the inside and the outside of the inner cylinder through the ventilation holes 3, so that not only can the air pressure in the inner cylinder be balanced, but also the odor in the dehydration cylinder can be removed, and the water outlet on the inner cylinder can be assisted to discharge.

By opening the ventilation holes 3, the odor in the dehydrating drum is removed in the dehydrating stage, for example, the user directly places the wet and odor-containing clothes in the drum to dehydrate, resulting in the drum having odor during dehydration.

As shown in fig. 1, in the embodiment of the present invention, after the door of the inner tub is closed, the ventilation holes 3 are opened when the inner tub stops rotating while washing water is contained in the inner tub.

In the embodiment of the invention, for example, the inner cylinder is in a main washing stage, the cylinder door of the inner cylinder is closed, washing water is contained in the inner cylinder, and the ventilation holes 3 are opened when the inner cylinder stops rotating;

when the inner cylinder stops rotating, the ventilation holes 3 are opened, gas with set pressure is introduced into the inner cylinder, and the gas is dissolved in washing water to form bubble water; after the inner cylinder rotates again, the washing water containing bubbles washes clothes under the rotation of the inner cylinder.

For example, aiming at the condition that the air holes 3 are opened and air flow is introduced into the middle part of the inner cylinder, the air holes 3 are provided with bubble generators which are used for forming micro-nano bubble water and enabling the micro-nano bubble water to be filled into the inner cylinder to be in direct contact with the object to be washed. The washing equipment is also provided with an air pump, the air pump is connected with the bubble generator, and the air pump provides gas for generating micro-nano bubbles for the bubble generator and power for conveying the micro-nano bubbles into the inner cylinder.

When the inner cylinder stops rotating, the air holes 3 of the inner cylinder are positioned above the rotating central shaft of the inner cylinder, the air holes 3 are opened, the inner cylinder is ventilated by the air bubble generator and the air pump, the air entering the inner cylinder can be dissolved into water to become air bubble water, clothes washing is carried out under the stirring of the water containing the air bubbles, and stains attached to the surface of the clothes are removed by the breaking of the air bubbles and the flushing of water flow in an accelerating way.

When the inner cylinder stops rotating, the ventilation holes 3 are opened, air bubbles are introduced into the inner cylinder, the air bubbles are prevented from moving in a turbulent way under the rotation of the inner cylinder after entering the inner cylinder and can not be fully dissolved in the washing water, and the air bubbles are prevented from being broken under the rotation of the inner cylinder before being dissolved in the washing water.

Further, before the inner cylinder enters the main washing stage, when water is fed into the inner cylinder, if the electromagnetic valve 5 is cut off, the air holes 3 are opened, external atmosphere enters the inner cylinder, and the air pressure in the inner cylinder is balanced. The sudden electromagnetic valve 5 cuts off water, especially the tap water pipe network, forming negative pressure, and back washing the washing water in the inner cylinder to the pipe network; when water is suddenly cut off, the external atmosphere can rapidly enter the inner cylinder, reverse suction is destroyed, air pressure balance is ensured, and washing water is prevented from being sucked into a tap water pipe network.

In addition, when water is fed, the gas in the inner cylinder is pressurized and can be discharged through the air holes 3, so that the air pressure balance is ensured.

In the embodiment of the invention, before the door of the inner cylinder is opened, the ventilation holes 3 are opened, ventilation is carried out on the inner part of the inner cylinder, and then the door of the inner cylinder is opened, so that clothes are put into the inner cylinder or taken out from the inner cylinder.

In the embodiment of the invention, after the clothes are washed, the inner cylinder is relatively moist, and when the inner cylinder is used for washing the clothes for a long time, the peculiar smell in the inner cylinder is relatively large, so before the inner cylinder door of the inner cylinder is opened to place the clothes in the inner cylinder, the breather hole 3 is opened to discharge the peculiar smell in the inner cylinder, and then the inner cylinder door of the inner cylinder is opened to place the clothes in the inner cylinder;

in addition, after the inner cylinder finishes washing the clothes, the door of the inner cylinder can be opened firstly, the ventilation holes 3 can be opened firstly to ventilate the inner cylinder, the moisture in the inner cylinder is discharged, then the door of the inner cylinder is opened, and the clothes are taken out from the inner cylinder.

In the embodiment of the invention, the drum washing machine comprises an inner drum shaft 2 and a driving motor, wherein one end of the inner drum shaft 2 is fixedly connected with the power output end of the driving motor, and the other end of the inner drum shaft is fixedly connected with the central position of the bottom of the inner drum; the inside of the inner cylinder shaft 2 is provided with a through hollow channel, a first port of the hollow channel is communicated with the inside of the inner cylinder, a second port of the hollow channel is provided with a switching valve, a ventilation pipeline and a water inlet pipeline are connected to the switching valve, one of the inside of the inner cylinder is communicated with the ventilation channel and the water inlet pipeline through switching of the switching valve, and ventilation holes 3 are formed in the ventilation pipeline.

In the embodiment of the invention, the conversion of the conversion valve is utilized to realize the water inlet or air inlet into the inner cylinder, the temperature of the water inlet in the inner cylinder can be changed by the water inlet into the inner cylinder, the dehydrated clothes can be dried, the mildew and odor of the clothes in the inner cylinder before water inlet can be removed, and the user experience is improved.

For office workers, the office workers generally come back late, and if clothes are washed at night, the problem is solved. The existing solution is to reserve washing, namely, putting clothes into a washing machine first and reserving washing in the morning, and the solution is to transfer the time for washing the clothes to the morning, so that the noise problem of washing the clothes in the evening is solved, and the problem of mildew and odor caused by long-term storage of the clothes is also brought. When the air humidity is higher than 70% at 25-30 ℃, the clothes are easy to mold and smell under the condition of sufficient oxygen.

After putting the clothes into the inner cylinder, if the drum washing machine does not receive a washing instruction within a preset time, switching the switching valve, opening the ventilation pipeline, closing the water inlet pipeline, and allowing the ventilation pipeline to enter air into the inner cylinder to perform mildew and odor removal treatment on the clothes in the inner cylinder; the drum washing machine includes a scheduled washing program in which a mold removal and deodorization process is performed;

after clothes are put into the inner cylinder, if the drum washing machine does not receive a washing instruction within a preset time, judging whether a ventilation pipeline of the conversion valve is in an open state, if so, air is fed into the inner cylinder, and if the ventilation pipeline is in a closed state, the conversion valve is switched, so that the ventilation pipeline is in an open state;

the method further comprises the step of detecting the temperature in the inner cylinder before the mildew-proof treatment, and when the temperature in the inner cylinder is in a preset temperature range, the mildew-proof treatment is carried out on the underwear in the inner cylinder;

when the temperature in the inner cylinder is in a preset temperature range, mildew-proof treatment is carried out on the underwear in the inner cylinder. Since the proper temperature for mold growth is 25-30 ℃, when the temperature in the detection cylinder is out of the temperature range, the mold growth condition is lacking, and mold prevention treatment is not needed, so that the preset temperature range can be set to 25-30 ℃, when the temperature in the detection cylinder is in the temperature range of 25-30 ℃, mold prevention treatment is carried out, and otherwise, mold prevention treatment is not carried out.

As shown in fig. 2, the control valve on the air vent 3 is an electromagnetic valve 5, and a conductive slip ring 6 is added on the inner cylinder shaft 2, so that the rotating action of the inner cylinder of the washing machine is ensured not to influence the energization of the electromagnetic valve 5; the conductive slip ring 6 is connected with the electromagnetic valve 5 through a wire, a wire groove is formed in the bottom of the inner cylinder, part of the wire is embedded into the wire groove, and the wire groove is not shown in fig. 2.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present invention can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present invention.

Claims (10)

1. A control method of drum washing machine, the drum washing machine includes the inner cylinder that can hold the wash water while washing the clothes, set up the bleeder vent on the inner cylinder, characterized by that, the drum washing machine has ventilation program, and when carrying out the ventilation program, ventilate the inner cylinder inside and outside through opening the bleeder vent.

2. The control method according to claim 1, wherein after the door of the inner tub is closed, the ventilation holes are opened when the inner tub is rotated without the washing water therein;

or after the drum door of the inner drum is closed, the ventilation holes are opened when the inner drum is stopped rotating and the washing water is contained in the inner drum.

3. The control method according to claim 2, wherein the amount of the gas flowing through the ventilation holes is adjusted according to the washing parameters of the inner cylinder, and the ventilation amount of the gas ventilation between the inside and the outside of the inner cylinder is changed.

4. A control method according to claim 3, wherein before the door of the inner tub is opened, the ventilation hole is opened, the inside of the inner tub is ventilated, and then the door of the inner tub is opened, and the laundry is put into or taken out of the inner tub.

5. The control method according to any one of claims 1 to 4, wherein when the inner cylinder is in the dehydration stage, the ventilation holes are opened, air flow is introduced into the inner middle part of the inner cylinder, and air pressure of the inner middle part and the peripheral side of the inner cylinder is balanced; or the ventilation holes are opened, the air flow at the inner periphery side of the inner cylinder is discharged out of the inner cylinder, and the air pressure at the middle part and the periphery side in the inner cylinder is balanced.

6. The control method according to claim 5, wherein the dehydration rotation speed of the inner cylinder is accelerated to a first preset rotation speed, and the opening of the ventilation hole is a first opening in the process of rotating the inner cylinder at the first preset rotation speed; and obtaining the vibration quantity of the inner cylinder, judging whether the vibration quantity is smaller than or equal to the set vibration quantity, if so, increasing the dehydration rotating speed of the inner cylinder to a second preset rotating speed, and increasing the opening of the air holes to a second opening in the rotating process of the inner cylinder at the second preset rotating speed.

7. The control method according to claim 6, wherein when the inner tub is in the dehydration stage, the water outlet on the inner tub is opened, the air vent is opened, the washing water is discharged to the outside of the inner tub simultaneously through the water outlet and the air vent, and after the dehydration is completed, the inner tub stops rotating, the water outlet is closed, and the air vent is opened continuously for a while.

8. The control method according to any one of claims 1 to 4, wherein the inner cylinder is intermittently rotated during the main washing stage, and the ventilation holes are opened and the gas of a set pressure is introduced into the inner cylinder when the inner cylinder stops rotating, and the gas is dissolved in the washing water to form bubble water; after the inner cylinder rotates again, the washing water containing bubbles washes clothes under the rotation of the inner cylinder.

9. The control method according to claim 8, wherein when water is supplied into the drum before the drum enters the main washing stage, if the solenoid valve of the drum washing machine suddenly cuts off water, the ventilation holes are opened, and external air enters the drum to balance the air pressure in the drum.

10. A drum washing machine, characterized in that the control method according to any one of claims 1 to 9 is adopted.