CN112030454A

CN112030454A - Drum washing machine and control method thereof

Info

Publication number: CN112030454A
Application number: CN201910413798.5A
Authority: CN
Inventors: 赵志强; 吕佩师; 许升
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd; Qingdao Haier Co Ltd
Current assignee: Haier Smart Home Co Ltd; Chongqing Haier Front Loading Washing Machine Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-12-04
Anticipated expiration: 2039-05-17
Also published as: CN112030454B

Abstract

The present invention provides a drum washing machine and a control method thereof, the drum washing machine includes: an inner barrel; an inner cylinder door which can be opened/closed and is arranged on the cylinder opening of the inner cylinder; the detection device is used for detecting whether the inner cylinder door is closed in place or not; when the inner drum door is closed, the inner drum door and the inner drum form an independent washing chamber together, and washing water is independently contained when clothes are washed. The drum washing machine can realize the detection of the opening and closing state of the inner drum door through the detection device, and prevent the phenomenon that the inner drum is not closed due to the fact that the inner drum door cannot be closed, and the washing working condition of the inner drum without holes cannot be realized.

Description

Drum washing machine and control method thereof

Technical Field

The invention relates to the technical field of laundry equipment, in particular to a drum washing machine and a control method thereof.

Background

The washing machine is used as a household appliance which is widely used in daily life of people, helps people get rid of the trouble of washing clothes, and brings great convenience to people. However, the washing machine has certain disadvantages, such as long time consumption, large water consumption, etc., and with the development of society, water resources become more and more important as an important natural resource, and the awareness of water saving of people is also improved, and how to realize the water saving function of the washing machine is very important.

In order to solve the water-saving problem of the washing machine, some patents are also proposed at present, for example, patent No. 201410215346.3, which is named as a Chinese invention patent of a drum washing machine, and the invention relates to a drum washing machine, which comprises a box body, wherein an inner cylinder and an outer cylinder are arranged in the box body, a door seal is arranged between the outer cylinder and the box body, the inner cylinder is connected with a driving device, the inner cylinder is a non-porous inner cylinder, the inner cylinder is a conical cylinder with a small diameter at the cylinder bottom and a large diameter at the cylinder opening, the cylinder opening of the inner cylinder is inwards folded in an arc shape, a water inlet guide pipe is arranged on the door seal, one end of the water inlet guide pipe is connected with a washing water rapid heating device, the other end of the water inlet guide pipe penetrates through the door seal. According to the technical scheme, the inner cylinder is a non-porous inner cylinder, water is fed into the inner cylinder through the water inlet guide pipe arranged on the door seal, and water is drained in the dehydration process through the shape of the inner cylinder, so that water can be prevented from being stored between the inner cylinder and the outer cylinder, and the water consumption for washing is greatly saved.

Said invention provides a drum washing machine with holeless inner drum, but only the inner drum of existent drum washing machine is designed into the holeless structure, so that its practical significance is very small. Because the clothes need to be soaked by certain washing water, if the soaking effect is to be realized, a certain amount of water needs to be stored in the imperforate inner cylinder, so that the load of the motor is increased, and the problems of power consumption and the like are also solved. In addition, the water inlet mode of the drum washing machine disclosed in the patent is realized through the door seal, the door seal mainly has the function of realizing the sealing of the cylinder opening of the outer cylinder of the washing machine, and the water inlet guide pipe arranged on the door seal is easy to influence the sealing effect of the door seal and is not easy to realize.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

In order to solve the above problems, a first aspect of the present invention is to provide a drum washing machine, specifically, the following technical solutions are adopted:

a drum washing machine comprising:

an inner barrel;

an inner cylinder door which can be opened/closed and is arranged on the cylinder opening of the inner cylinder;

the detection device is used for detecting whether the inner cylinder door is closed in place or not;

when the inner drum door is closed, the inner drum door and the inner drum form an independent washing chamber together, and washing water is independently contained when clothes are washed.

Furthermore, the detection device comprises a detection terminal, the detection terminal is arranged on the opening of the inner barrel, and the detection terminal has a first physical state corresponding to the opening of the inner barrel door and a second physical state corresponding to the closing of the inner barrel door.

Furthermore, the detection terminal is a detection switch, the detection switch is arranged at the opening of the inner cylinder, and the detection switch has a first physical state of normally open/normally closed and a second physical state of closing/opening under the triggering of the inner cylinder door when the inner cylinder door is closed.

Furthermore, the detection device comprises a detection terminal, the detection terminal is arranged on the opening of the inner barrel, and the detection terminal can generate a first signal corresponding to the opening of the door of the inner barrel and a second signal corresponding to the closing of the door of the inner barrel.

Furthermore, one side of the inner cylinder door is rotatably installed on a cylinder opening of the inner cylinder through an inner cylinder door hinge, the detection terminal is arranged on the cylinder opening of the inner cylinder and close to the inner cylinder door hinge, and the detection terminal is contacted with the inner cylinder door hinge when the inner cylinder door is closed;

preferably, the inner cylinder door hinge comprises a connecting arm, the connecting arm is relatively rotatably mounted on the rotating shaft, the inner cylinder door is fixedly connected with the connecting arm, the detection terminal is arranged on a cylinder opening of the inner cylinder and close to the connecting arm, and the detection terminal is contacted with the connecting arm when the inner cylinder door is closed.

Furthermore, the detection device comprises a main body, wherein a communication module for communicating and connecting with a main control panel of the washing machine is arranged on the main body, and the communication module is arranged on the inner barrel;

preferably, the communication module is in wireless communication connection with a main control panel of the washing machine and is used for sending a detection signal to the main control panel of the washing machine.

Furthermore, the detection terminal is electrically connected with the communication module;

preferably, the detection terminal is in communication connection with the communication module through a data line; and a jacket for a data line to pass through is arranged on the opening of the inner cylinder.

Furthermore, a power supply module is arranged on the main body and is electrically connected with the communication module;

preferably, the power supply module is a power supply battery, or the power supply module is a wireless charging module;

preferably, the communication module and/or the power supply module are arranged in the inner barrel or outside the inner barrel;

further preferably, the communication module and/or the power supply module are arranged on the inner wall of the inner barrel or in the lifting device of the inner barrel.

preferably, the power supply module is a power supply battery, or the power supply module is a wireless charging module.

A second object of the present invention is to provide a control method of the washing machine, specifically:

the control method of the roller washing machine is characterized in that the roller washing machine receives a detection signal of a detection device and judges whether the inner cylinder door is closed in place or not.

Further, after the drum washing machine receives a control instruction for starting the washing program, a detection signal of the detection device is obtained to judge whether the inner drum door is closed in place, if so, the washing program is started, and if not, the washing program is suspended;

and/or, in the running process of the washing program, the drum washing machine acquires a detection signal of the detection device to judge whether the inner drum door is closed in place, if so, the washing program is continued, and if not, the washing program is suspended.

According to the drum washing machine, the inner drum door is arranged on the opening of the inner drum, the inner drum is designed to be a non-porous drum, the inner drum door and the non-porous drum form an independent washing chamber together, washing water is independently contained when clothes are washed, and washing/rinsing water does not need to be filled between the inner drum and the outer drum, so that the washing water consumption of the washing machine is greatly reduced; the possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided; the user health and user experience are greatly improved, and water resources are greatly saved.

The drum washing machine can realize the detection of the opening and closing state of the inner drum door through the detection device, and prevent the phenomenon that the inner drum is not closed due to the fact that the inner drum door cannot be closed, and the washing working condition of the inner drum without holes cannot be realized.

Drawings

Fig. 1 is a schematic perspective view (door closed state) of a drum washing machine according to a first, a second and a third embodiment of the present invention;

fig. 2 is a schematic perspective view (door open state) of a drum washing machine according to a first, a second and a third embodiment of the present invention;

FIG. 3 is a front view (door closed state) of the drum washing machine according to the first, second and third embodiments of the present invention;

FIG. 4 is a front view (door open state) of the drum washing machine according to the first, second and third embodiments of the present invention;

FIG. 5 is a sectional view of the drum washing machine according to the first, second and third embodiments of the present invention, taken along the plane A-A in FIG. 3;

fig. 6 is a partially enlarged view of fig. 5 of the drum washing machine according to the second embodiment of the present invention;

fig. 7 is a partially enlarged view of a first part of fig. 6 of a drum washing machine according to a second embodiment of the present invention;

fig. 8 is a partially enlarged view of a first part of fig. 7 of the drum washing machine according to the second embodiment of the present invention;

fig. 9 is a second enlarged view of the portion of fig. 7 of the drum washing machine according to the second embodiment of the present invention;

fig. 10 is a partially enlarged view of fig. 5 of a drum washing machine according to a third embodiment of the present invention;

fig. 11 is a first enlarged view of a portion of fig. 10 of a drum washing machine according to a third embodiment of the present invention;

fig. 12 is a second enlarged view of the drum washing machine of the third embodiment of the present invention, shown in fig. 10;

FIG. 13 is a schematic structural view of an inner tub door of a drum washing machine according to a third embodiment of the present invention;

FIG. 14 is a schematic structural view of a rotating shaft of an inner drum door of a drum washing machine according to a third embodiment of the present invention;

FIG. 15 is an enlarged view of a portion of the drum door of the drum washing machine according to the third embodiment of the present invention;

FIG. 16 is a schematic view of an inner barrel door hinge of a drum washing machine according to a fourth embodiment of the present invention;

FIG. 17 is an enlarged view of a portion of a drum door of the drum washing machine according to the fourth embodiment of the present invention;

FIG. 18 is a schematic view of a drum washing machine according to a fifth embodiment of the present invention;

FIG. 19 is an enlarged view of a portion of the drum door of the drum washing machine according to the fifth embodiment of the present invention;

FIG. 20 is a schematic view of a drum washing machine according to a sixth embodiment of the present invention;

FIG. 21 is a schematic view of a drum washing machine according to a seventh embodiment of the present invention (first embodiment);

FIG. 22 is a schematic view of a drum type washing machine according to a seventh embodiment of the present invention (second embodiment);

fig. 23 is a schematic view of a drum washing machine according to a seventh embodiment of the present invention (embodiment three);

FIG. 24 is a schematic view of a drum washing machine according to an eighth embodiment of the present invention;

fig. 25 is a partially enlarged view (pressure relief state) of fig. 24 of the drum washing machine according to the eighth embodiment of the present invention; (ii) a

Fig. 26 is a partially enlarged view (pressurized state) of fig. 24 of the drum washing machine according to the eighth embodiment of the present invention;

FIG. 27 is a schematic view of a drum washing machine according to a ninth embodiment of the present invention;

fig. 28 is an enlarged partial view of fig. 27 (a pressure release state in the first embodiment) of a drum washing machine according to a ninth embodiment of the present invention;

fig. 29 is an enlarged partial view of fig. 27 (pressurized state in the first embodiment) of the drum washing machine according to the ninth embodiment of the present invention;

fig. 30 is an enlarged partial view of fig. 27 (a pressure release state in the second embodiment) of a drum washing machine according to a ninth embodiment of the present invention;

fig. 31 is a partially enlarged view of fig. 27 (pressurized state in the second embodiment) of the drum washing machine according to the ninth embodiment of the present invention.

Detailed Description

A drum washing machine and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 31, the present embodiment provides a drum washing machine with a non-porous inner drum front opening structure, which has a simple structure, and can greatly reduce the amount of washing water of the washing machine without filling washing/rinsing water between the inner drum and the outer drum. The possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided. The user health and user experience are greatly improved, and water resources are greatly saved.

The drum washing machine of the present embodiment has a housing 19, and the housing 19 includes: a top deck 2, a front panel, a back panel and a bottom panel. The bottom plate is provided with feet 9 for supporting the whole washing machine. The outer casing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is coaxially disposed inside the outer cylinder 18. The outer cylinder 18 is mainly used for collecting the drainage of the inner cylinder 17 and the drainage of the inner cylinder 17 by high-speed centrifugal dehydration. The drum 17 rotates, preferably with lifting ribs 43, and is continuously lifted and dropped to beat the laundry, so as to wash the laundry. The inner barrel 17 is of non-porous construction. The outer cylinder 18 has a central mounting hole to which the bearing 12 is fixedly mounted. An inner drum shaft 13, which is fixedly connected to the inner drum 17, passes through the bearing 12 shown and is connected to a drive motor 16. An openable/closable inner cylinder door 6 is installed on a front cylinder opening of the inner cylinder 17, thereby realizing that the inner cylinder 17 is of a sealed cabin structure.

The housing 19 of this embodiment is provided with an openable/closable door 5.

Example one

As shown in fig. 1 to 5, a drum washing machine of the present embodiment includes:

an inner cylinder 17;

an inner cylinder door 6 openably/closably mounted on a cylinder opening of the inner cylinder 17;

the inner drum 17 and the inner drum door 6 form an independent washing chamber together, and washing water is independently contained when clothes are washed.

The drum washing machine of the embodiment has the advantages that the inner drum door 6 is arranged on the opening of the inner drum 17, the inner drum 17 adopts a non-porous drum design, the inner drum and the non-porous drum form an independent washing chamber together, washing water is independently contained when clothes are washed, and washing/rinsing water does not need to be filled between the inner drum and the outer drum, so that the washing water consumption of the washing machine is greatly reduced; the possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided; the user health and user experience are greatly improved, and water resources are greatly saved.

The inner cylinder 17 described in this embodiment is a non-porous cylinder, one side edge of the inner cylinder door 6 is rotatably mounted on a cylinder opening of the inner cylinder 17 through an inner cylinder door hinge, and the cylinder opening of the inner cylinder is closed by the inner cylinder door 6 in a rotating manner to form an independent washing chamber together with the inner cylinder.

Furthermore, an inner cylinder door lock hole is formed in the edge of one side, opposite to the hinge, of the cylinder opening of the inner cylinder door 6/the inner cylinder 17, an inner cylinder door lock tongue 601 is correspondingly arranged on the cylinder opening/the inner cylinder door of the inner cylinder 17, and the inner cylinder door lock tongue 601 is matched with the inner cylinder door lock hole in a locking mode.

Further, the drum washing machine further comprises an inner drum door frame, the inner drum door frame is arranged on the drum opening of the inner drum 17, and the inner drum door 6 is arranged on the inner drum door frame in an openable/closable manner. Therefore, the barrel structure of the inner barrel 17 can be simplified, the installation of the inner barrel door 6 can be realized, and the sealing assembly is convenient.

In order to form a closed washing chamber, the inner drum door 6 is provided with a sealing device for sealing the opening of the inner drum 17 when the inner drum door 6 is closed.

Preferably, the sealing means comprises a sealing ring matching the shape of the mouth of the inner barrel 17.

Furthermore, the drum washing machine also comprises a shell 19 and an outer cylinder 18 which is arranged in the shell 19 and is coaxial with the inner cylinder 17, an opening is arranged on the shell 19 corresponding to the cylinder opening of the outer cylinder, and the opening of the shell 19 is provided with an openable/closable machine door 5.

Specifically, one side edge of the door 5 is rotatably mounted on the opening of the housing 19 through a door hinge 33; a door lock hole is arranged on one side of the opening edge of the shell 19 opposite to the hinge of the door 6, and a door lock hole tongue 503 matched with the door lock hole is arranged on the door 19.

Further, a gasket 35 is provided at the opening of the outer tub 18 to be in sealing contact with the inner wall of the casing 19, thereby preventing water droplets of wet laundry or fine mist splashed by centrifugal drainage from entering the casing 19.

In order to realize the drainage of the imperforate inner cylinder, a drainage port is arranged on the side wall of the inner cylinder 17, a centrifugal valve used for keeping the drainage port normally closed is arranged on the drainage port, and the centrifugal valve opens the drainage port to drain water when the rotating speed of the inner cylinder exceeds a set value.

Example two

As shown in fig. 1 to 9, a drum washing machine of the present embodiment includes:

an inner cylinder 17;

a sealing device is arranged between the opening of the inner barrel 17 and the inner barrel door 6, the opening of the inner barrel 17 is kept to be sealed and closed through the sealing device when the inner barrel door 6 is closed, the inner barrel 17 and the inner barrel door 6 form an independent washing chamber together, and washing water is independently contained when clothes are washed.

The drum-type washing machine of this embodiment has realized through sealing device that the nozzle that keeps inner tube 17 when inner tube door 6 closes is sealed to be closed for washing water is only in the inner tube during washing or rinsing, avoids the inner tube to leak and influences the washing effect, causes the unable normal work of washing machine even.

In order to prevent the problem of water leakage between the opening of the inner cylinder 17 and the inner cylinder door 6, the sealing device of the embodiment includes an axial sealing device 37 for sealing along the central axis direction of the inner cylinder, the axial sealing device 37 includes an axial sealing element disposed on the inner cylinder door 6/on the opening edge of the inner cylinder 17, and an axial sealing matching part correspondingly disposed on the opening edge of the inner cylinder/on the inner cylinder door, and the axial sealing element keeps sealing contact with the axial sealing matching part along the central axis direction of the inner cylinder. In the embodiment, the axial sealing device 37 is arranged between the inner cylinder door and the cylinder opening of the inner cylinder, so that the axial sealing between the inner cylinder door 6 and the cylinder opening of the inner cylinder 17 is realized.

Specifically, the axial seal is mounted on the inner door 6, and comprises a bent part 3702 and a sealing part 3703; the axial sealing matching part is an annular sunk groove 36 arranged on the edge of the opening of the inner cylinder 17; the curved portion 3702 is deformed to be bent and applied to the sealing portion 3703 when the inner door 6 is closed, and the sealing portion 3703 is in sealing contact with the annular depressed groove 36 to perform axial sealing.

Further, the axial seal 37 further includes a base 3701, one end of the curved portion 3702 is connected to the base 3701, and the other end is connected to the sealing portion 3703; an annular installation groove is formed in the inner cylinder door 6, and the base 3701 is installed in the annular installation groove.

Preferably, the base 3707, the curved portion 3702 and the sealing portion 3703 are integrally formed.

The base 3701 of this embodiment is an annular base block, the curved portion 3702 has at least one curved arm in the direction along the central axis of the inner cylinder 17, and the sealing portion 3703 includes a sealing contact surface disposed in parallel with the bottom wall of the annular depressed groove 36.

Meanwhile, the sealing device of the present embodiment includes a radial sealing device 38 for sealing in the radial direction of the inner tube 17, and the radial sealing device includes a radial sealing member provided on the inner tube door/the rim of the opening of the inner tube and a radial sealing engagement portion correspondingly provided on the rim of the opening of the inner tube/the rim of the inner tube, and the radial sealing member is held in sealing contact with the radial sealing engagement portion in the radial direction of the inner tube.

Further, the radial seal member is mounted on the outer peripheral wall of the inner door, and includes a deformation portion 38; the radial sealing matching part is an annular groove 39 arranged on the inner wall of the edge of the opening of the inner cylinder; the deformation part 38 enters the annular groove 39 in a bending shape when the inner cylinder door is closed, and the deformation part 38 is in sealing contact with the annular groove 39 to perform radial sealing.

Specifically, the deformation part is a deformation fin made of an elastic material, the deformation fin is arranged on the outer peripheral wall of the inner cylinder door, and the radial height of the annular fin is larger than the distance between the outer periphery of the inner cylinder door and the inner wall of the cylinder opening of the inner cylinder; the axial thickness of the deformation fin is smaller than the width of the notch of the annular groove. This ensures that the annular fin is in sealing contact with the bottom wall of the annular groove to effect a radial seal.

In order to realize the sealing of the inner cylinder door 6 and the cylinder opening of the inner cylinder 17 on the whole circumference, the axial sealing element 37 and the radial sealing element are both of annular structures, an axial sealing matching part and a radial sealing matching part are arranged on the whole circumference of the edge of the cylinder opening of the inner cylinder door/inner cylinder, the axial sealing element and the axial sealing matching part are kept in sealing contact to realize the axial sealing on the whole circumference, and the radial sealing element and the radial sealing matching part are kept in sealing contact to realize the radial sealing on the whole circumference.

Furthermore, the inner cylinder door comprises a door outer cover for sealing the cylinder opening of the inner cylinder and a door inner cover extending into the inner cylinder along the axial direction of the inner cylinder;

the axial sealing element is arranged on the inner wall surface of the door outer cover close to one side of the cylinder opening of the inner cylinder, and the annular sinking groove is formed by the fact that the outer wall of the cylinder opening edge of the inner cylinder is sunken towards the inner part of the inner cylinder;

the radial sealing element is arranged on the peripheral wall of the door inner cover, and the annular groove is arranged on the peripheral wall of the opening edge of the inner cylinder.

EXAMPLE III

As shown in fig. 1 to 5 and fig. 10 to 15, the drum washing machine of the present embodiment includes:

an inner cylinder 17;

an inner cylinder door 6 comprising a door outer cover and a door inner cover 602 fixedly connected;

the inner drum door 6 is installed on the opening of the inner drum 17 in an opening/closing manner, when the inner drum door is closed, the inner drum 17 and the inner drum door 6 form an independent washing chamber together, and washing water is independently contained when clothes are washed.

As shown in fig. 10 and 11, in particular, the door outer cover includes a base cover 603 and a decorative cover 604, the door inner cover 602 is mounted on one side of the base cover 603, and the decorative cover 604 is mounted on the other side of the base cover 603.

Preferably, the door inner cover 602 is fixedly connected to the base cover 603 by screws 42.

Decoration cover 604 joint on base cover 603, specifically, as shown in fig. 15, base cover 603 in have a draw-in groove 50, decoration cover 604 on have a jack catch 51, jack catch 51 cooperatees with draw-in groove 50 and realizes the joint.

The drum washing machine of the embodiment further comprises an inner drum door shaft 40, and the inner drum door 6 is provided with a shaft groove 41 for mounting the inner drum door shaft.

Preferably, the base cover is provided with a base cover groove, the door inner cover is provided with a door inner cover groove, and an opening of the base cover groove is oppositely spliced with an opening of the door inner cover groove to form a shaft groove.

As shown in fig. 13 and 14, specifically, the inner cylinder door shaft 40 includes a first rotating shaft and a second rotating shaft, an elastic element 49 is disposed between the first rotating shaft and the second rotating shaft, two ends of the elastic element 49 respectively abut against the first rotating shaft and the second rotating shaft, and one end of the first rotating shaft and one end of the second rotating shaft both extend out of the shaft groove under the elastic force of the elastic element for being assembled with the rotating shaft hole.

The door inner cover 602 and/or the base cover 603 are provided with a sliding groove 46 communicated with the shaft groove, the first rotating shaft and/or the second rotating shaft are provided with pushing parts 47, and the pushing parts 47 are arranged in the sliding groove 46.

Therefore, the pushing part 47 is pushed to slide along the sliding groove 46, and the extending end of the inner cylinder door shaft 40 retracts into the shaft hole 48, so that the quick assembly and disassembly of the inner cylinder door can be realized.

Furthermore, a first sliding groove and a second sliding groove are formed in the door outer cover, a first pushing portion arranged in the first sliding groove is arranged on the first rotating shaft, a second pushing portion arranged in the second sliding groove is arranged on the second rotating shaft, the first pushing portion is a first protruding block protruding from the first rotating shaft, and the second pushing portion is a second protruding block protruding from the second rotating shaft; the elastic piece is a compression spring.

As shown in fig. 12, an inner cylinder door latch 601 is disposed on an edge of one side of the inner cylinder door 6 opposite to the inner cylinder door shaft, an inner cylinder door lock hole 43 is correspondingly disposed on an edge of the cylinder opening of the inner cylinder 17, and the inner cylinder door latch 601 is in locking fit with the inner cylinder door lock hole 43.

Further, the door lock further comprises an inner barrel door handle 45, the inner barrel door handle 45 is rotatably mounted on the outer cover of the door, and the inner barrel door handle 45 is provided with a pushing end for pushing the inner barrel door lock tongue to retract and unlock.

Furthermore, the inner cylinder door 6 is provided with a lock tongue mounting groove, the inner cylinder door lock tongue 601 is telescopically arranged in the lock tongue mounting groove, a compression spring 44 is arranged between the lock tongue of the inner cylinder door and the lock tongue mounting groove, the middle part of the inner cylinder door handle is rotatably arranged on the inner cylinder door, one end of the inner cylinder door handle is a pushing end acting on the lock tongue of the inner cylinder door, and the other end of the inner cylinder door handle is a handle end; the inner barrel door handle is driven to rotate by acting on the handle end, and the pushing end pushes the inner barrel door lock tongue to retract and unlock along with the rotation of the inner barrel door handle.

Furthermore, the inner cylinder door lock tongue is provided with a matching groove 605, and the pushing end extends into the matching groove 605.

Preferably, the pushing end is provided with an arc matching surface, and the inner wall of one side, which is contacted with the pushing end, in the matching groove is obliquely arranged.

As an embodiment of the present embodiment, the inner cylinder door 6 is provided with a position detection device for detecting whether the inner cylinder door is closed in place.

Example four

As shown in fig. 1 to 5 and 16 to 17, a drum washing machine of the present embodiment includes:

an inner cylinder 17;

the washing machine comprises an inner barrel door 6, wherein one side of the inner barrel door 6 is rotatably arranged on the opening of an inner barrel 17 through an inner barrel door hinge, the inner barrel door 6 rotates to close the opening of the inner barrel 17 to form an independent washing chamber, and washing water is independently contained when clothes are washed;

the inner cylinder door hinge has an escape portion 55 for increasing the opening angle of the inner cylinder door.

The drum type washing machine of this embodiment is because the tube door in the nozzle installation of inner tube, and the inner tube door hinge of this embodiment has dodges the portion for inner tube door has bigger opening angle, is convenient for on the one hand get put the clothing, and on the other hand prevents opening of inner tube door and drum type washing machine's casing to produce the interference.

Further, the inner cylinder door hinge has a rotating shaft 52 and an escape portion 55 that escapes from the rotating shaft 52 when the rotation is opened.

The drum washing machine inner drum of the embodiment adopts a non-porous inner drum, an inner drum door is arranged on the opening of the inner drum, and an independent washing chamber is formed between the inner drum door and the opening of the inner drum. Because the inner drum door is arranged at the drum opening of the inner drum, the inner drum door hinge is provided with an avoiding part avoiding the rotating shaft, the inner drum door is provided with a larger opening angle in the opening process of the door body, on one hand, clothes are convenient to take and place, and on the other hand, the inner drum door is prevented from being opened to generate interference with the shell of the drum washing machine.

Further, the inner cylinder door hinge comprises a connecting arm 54, the connecting arm 54 is relatively rotatably mounted on the rotating shaft 52, and the inner cylinder door 6 is fixedly connected with the connecting arm 54; the escape portion 55 is provided on the connecting arm 54.

Specifically, the connecting arm 54 has a first end rotatably fitted to the rotating shaft 52 and a second end fitted to the inner tube door, and the first end and the second end are bent to form an escape portion therebetween.

Since the inner drum door needs to be kept closed with the opening of the inner drum to form a washing chamber for independently containing washing water when washing clothes, in order to achieve the purpose, the rotating shaft 52 is provided with an elastic member 53, the elastic end part of the elastic member 53 is stopped against a connecting arm 54, and the elastic member 53 applies elastic force to keep the inner drum door 6 closed when the inner drum door 6 is closed. In the embodiment, the elastic member 53 is arranged on the inner cylinder door hinge, so that when the inner cylinder door is closed, the elastic member is deformed to generate elastic force to keep the inner cylinder door 6 closed.

Preferably, the elastic member 53 is a torsion spring.

Further, in order to maintain the closed state between the inner cylinder door 6 and the cylinder opening of the inner cylinder 17, the inner cylinder door 6 and/or the inner cylinder 17 are/is provided with an attraction device for attracting the inner cylinder door 6 when the inner cylinder door 6 is closed, and the inner cylinder door 6 is kept attracted through the attraction device, so that the closed state between the inner cylinder door 6 and the cylinder opening of the inner cylinder 17 is maintained.

As an implementation manner of this embodiment, the attraction device 57 is disposed on the inner barrel door, the mouth of the inner barrel is provided with the attracted body 56 which can be attracted by the attraction device 57, or at least the mouth of the inner barrel 17 is made of a material which can be attracted by the attraction device.

Further, the attracting device 57 is a permanent magnet or an electromagnet, a permanent magnet or a magnetic body made of a magnetic material is arranged at the mouth of the inner cylinder 17, or the mouth 17 of the inner cylinder is made of a magnetic material, or the inner cylinder 17 is made of a magnetic material.

Permanent magnet: namely, the permanent magnet can keep the magnetism for a long time, and the permanent magnet is a hard magnet, is not easy to lose magnetism and is not easy to magnetize.

Materials that react in some way to magnetic fields are called magnetic materials. Substances can be classified into diamagnetic substances, paramagnetic substances, ferromagnetic substances, antiferromagnetic substances, and ferrimagnetic substances according to the strength of magnetism exhibited by the substances in an external magnetic field. Most materials are diamagnetic or paramagnetic and they are less reactive to external magnetic fields. Ferromagnetic substances and ferrimagnetic substances are ferromagnetic substances, and magnetic materials are generally called ferromagnetic materials. Preferably, the attraction device is a permanent magnet, and the inner cylinder is made of stainless steel material. The inner cylinder of this embodiment, which adsorbs stainless steel by permanent magnets, maintains the closed state of the inner cylinder door 6.

As another implementation manner of this embodiment, the attraction device 57 is disposed on the opening of the inner cylinder 17, the attracted body 56 capable of being attracted by the attraction device is disposed on the inner cylinder door 6, or the inner cylinder door 6 comprises an inner cylinder door panel made of a material capable of being attracted by the attraction device 57.

Further, the attraction device 57 is a permanent magnet or an electromagnet, the inner cylinder door 6 is provided with a permanent magnet or a magnetic body made of a magnetic material, or the inner cylinder door 6 comprises an inner cylinder door plate made of a magnetic material.

Preferably, the attraction device is a permanent magnet, and the inner cylinder door is correspondingly provided with a metal body.

As another embodiment of this embodiment, the attraction device 57 includes a plurality of attraction devices distributed along the circumferential direction of the inner cylinder door and/or the opening of the inner cylinder, so that the inner cylinder door has a better attraction effect and maintains a seal.

When the attraction device in the embodiment adopts the electromagnet, the electromagnet is controlled to be switched on and off to generate a magnetic field, and the inner cylinder door or the cylinder opening of the inner cylinder is adsorbed, so that the inner cylinder door and the cylinder opening of the inner cylinder are kept sealed. As the inner drum rotates under the working condition of washing, the electromagnet can be powered wirelessly.

EXAMPLE five

As shown in fig. 1 to 5 and fig. 18 to 19, the drum washing machine of the present embodiment includes:

an inner cylinder 17;

and the detection device is used for detecting whether the inner cylinder door 6 is closed in place or not;

when the inner drum door 6 is closed, the inner drum door and the inner drum 17 form an independent washing chamber together, and washing water is independently contained when clothes are washed.

The drum-type washing machine of this embodiment can realize detecting the open and close state of inner tube door through detection device, prevents to cause the inner tube not to seal because the inner tube door is closed not to the position, and can't realize the laundry operating mode of sclausura inner tube.

As an implementation manner of this embodiment, the detecting device includes a detecting terminal 59, the detecting terminal 59 is disposed on the opening of the inner cylinder 17, and the detecting terminal 59 has a first physical state corresponding to the opening of the inner cylinder door 6 and a second physical state corresponding to the closing of the inner cylinder door.

Specifically, the detection terminal 59 is a detection switch, the detection switch is arranged at the opening of the inner barrel 17, and the detection switch has a first physical state of normally open/normally closed and a second physical state of closing/opening under the trigger of the inner barrel door when the inner barrel door is closed.

The detection switch of this embodiment is the normally open state, triggers the detection switch and turns into the open mode by the normally open state when the inner tube door is closed, like this, keeps the off-state under drum type washing machine unoperated state, prevents that detection switch from closing all the time and causing the electric energy extravagant.

As another implementation manner of this embodiment, the detection device includes a detection terminal 59, the detection terminal 59 is disposed on the opening of the inner cylinder, and the detection terminal can generate a first signal corresponding to the indication that the door of the inner cylinder is opened and a second signal corresponding to the indication that the door of the inner cylinder is closed.

The detection terminal of the embodiment can generate a detection signal, and the detection signal changes under two states of closing and opening the inner cylinder door. For example, the detection terminal of the present embodiment may generate a photoelectric signal or an acoustic signal, and the photoelectric signal or the acoustic signal changes in the opening and closing states of the inner door, thereby representing the state of the inner door.

Specifically, one side of the inner cylinder door 6 is rotatably mounted on a cylinder opening of the inner cylinder 17 through an inner cylinder door hinge, the detection terminal 59 is arranged on the cylinder opening of the inner cylinder 17 at a position close to the inner cylinder door hinge, and the detection terminal 59 is in contact with the inner cylinder door hinge when the inner cylinder door 6 is closed.

Preferably, the inner cylinder door hinge comprises a connecting arm 54, the connecting arm 54 is relatively rotatably mounted on the rotating shaft 52, the inner cylinder door 6 is fixedly connected with the connecting arm 54, the detection terminal 59 is arranged on the cylinder opening of the inner cylinder 17 at a position close to the connecting arm 54, and the detection terminal 59 is in contact with the connecting arm 54 when the inner cylinder door 6 is closed.

The detection terminal 59 of the present embodiment is close to the connection arm 54 of the inner cylinder door hinge, and the connection arm 54 moves as the inner cylinder door 6 is opened/closed, and since the inner cylinder door hinge is mounted on the edge of the inner cylinder door 6, it is easier to detect the mounting of the terminal 59. Further, the detecting device of the present embodiment includes a main body 58, a communication module is disposed on the main body 58, the communication module is disposed on the inner barrel 17, and the detecting terminal 59 is electrically connected to the communication module.

Preferably, the detection terminal is in communication connection with the communication module through a data line; and a jacket for a data line to pass through is arranged on the opening of the inner cylinder. The sheath of the present embodiment is used to protect the data line.

The communication module described in this embodiment is in wireless communication connection with the main control panel of the washing machine, and is used for sending a detection signal to the main control panel of the washing machine.

In this way, the detection device of the embodiment sends the signal detected by the detection terminal to the main control board of the drum washing machine through the communication module.

Because the inner cylinder operates under the working condition, in order to realize the power supply of the detection device, the main body 58 is also provided with a power supply module, and the power supply module is electrically connected with the communication module; and realizing the power supply of the communication module.

The present embodiment also provides a control method of the drum washing machine, in which the drum washing machine receives a detection signal of the detection device to determine whether the inner cylinder door is closed in place.

Furthermore, when the detection device detects that the inner cylinder door is not closed in place, an alarm is given.

EXAMPLE six

The embodiment mainly solves the problem of how to accurately determine the water inflow of the drum washing machine with the non-porous inner drum, and the specific scheme is as follows:

as shown in fig. 20, a drum washing machine includes an inner drum 17 and a water inlet pipeline communicated with the inner drum 17, wherein the inner drum 17 is a non-porous inner drum and is used for containing washing water when washing clothes, and the water inlet pipeline is provided with a flow sensor 1 for detecting the flow of the inlet water.

In the embodiment, the flow sensor 1 is arranged on the water inlet pipeline to monitor the flow of inlet water, and when the set water inflow is reached, the water inlet valve 20 is closed to finish water inlet. The embodiment adopts the flow sensor to solve the problem of water inlet of the drum washing machine with the non-porous inner drum according to the set water level, ensures the washing effect, has simple structure and is convenient to control.

Further, the drum washing machine of the embodiment includes a water inlet valve 20 and a detergent box 3, the water inlet pipeline includes a first water inlet pipe and a second water inlet pipe, the outlet end of the water inlet valve 20 is communicated with the detergent box 3 through the first water inlet pipe, the outlet end of the detergent box 3 is communicated with the inner barrel 17 through the second water inlet pipe, and the flow sensor 1 is arranged on the first water inlet pipe or the second water inlet pipe.

Preferably, the flow sensor 1 is disposed on the first water inlet pipe, so that the detergent in the detergent box can be placed into the flow sensor 1.

The drum washing machine of the embodiment comprises a main controller 4, and the flow sensor 1 is electrically connected with the main controller 4 through a line. The main controller 4 can collect the water inflow of the inner cylinder 17 in real time to reach the set water inflow, and the water inlet valve 20 is closed.

As an implementation manner of this embodiment, the flow sensor 1 is a rotor flow sensor, or a turbine flow sensor, or an ultrasonic flow sensor, or an electromagnetic flow sensor, or an orifice flow sensor.

In this embodiment, the flow sensor 1 may be disposed at any position on the water inlet pipeline, preferably, at the rear portion of the water inlet valve 20, and precisely measures the water flow entering the sealed inner cylinder 17, the flow sensor 1 is connected to the main controller 4 through a line, and the main controller 4 may collect the water inflow of the inner cylinder 17 in real time to set the water inflow and close the water inlet valve 20.

In order to realize water inlet into the imperforate inner barrel, the drum washing machine of the embodiment comprises a driving motor 16 and an inner barrel shaft 13, wherein the driving motor 16 is in transmission connection with the inner barrel 17 through the inner barrel shaft 13 to drive the inner barrel 17 to rotate, a hollow channel 14 communicated with the inside of the inner barrel 17 is arranged in the inner barrel shaft 13, and a water inlet pipeline is communicated with the hollow channel of the inner barrel shaft 13.

Specifically, the inner cylinder shaft 13 is connected with a driving motor 16, the driving motor 16 comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft 13; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor and is communicated with the hollow channel 14 of the inner cylinder shaft 13.

Furthermore, a first dynamic sealing structure 15 is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel 14 of the inner cylinder shaft 13.

In order to realize the drainage of the imperforate inner cylinder, the drum washing machine of the embodiment comprises an outer cylinder 18, wherein an inner cylinder drainage hole is formed in the side wall of the inner cylinder 17, a normally closed one-way valve plug 11 is installed on the inner cylinder drainage hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open to drain water is installed on the outer cylinder 18.

In an embodiment of the present invention, the outer cylinder 18 is further provided with a locking mechanism for locking the rotation of the inner cylinder 17, and the locking mechanism pushes the one-way valve plug 11 open to discharge water after the inner cylinder is locked by the push rod mechanism 10.

As another implementation manner of this embodiment, in this embodiment, a plurality of dewatering holes are formed in the side wall of the inner cylinder 17, centrifugal valves are installed on the dewatering holes, and the centrifugal valves are opened under the action of the dewatering centrifugal force to perform washing drainage or dewatering drainage by controlling the inner cylinder to reach a certain rotation speed.

The present embodiment also provides a control method for the drum washing machine, in which the washing machine executes a washing/rinsing procedure, the flow sensor detects a water inlet flow value in real time during a water inlet process, the washing machine calculates a water inlet flow according to the water inlet flow value and the water inlet time, and stops water inlet when the water inlet flow reaches a set water inlet flow of the washing machine.

The drum washing machine is provided with a plurality of water inlet flow values for users to select, and the washing machine carries out water inlet according to the water inlet flow values selected by the users.

The drum washing machine has a clothes weighing function, and can determine the flow value of inlet water according to the weight of clothes to carry out water inlet.

EXAMPLE seven

As shown in fig. 21-23, the drum washing machine of the present embodiment includes an inner drum 17 having no hole and used for containing washing water when washing clothes, and a water measuring device for measuring water inflow, wherein the water inlet pipeline is connected to the water measuring device, and the water measuring device is connected to the inner drum.

The drum type washing machine of this embodiment carries out the ration volume through setting up water gaging device, carries out the number of times of water gaging device water gaging according to the water level determination that sets for in advance to intaking in 1 of inner tube to solved sclausura inner tube drum type washing machine according to the problem of intaking of setting for the water level, ensured washing effect, simple structure controls the convenience.

Further, the water measuring device of the embodiment comprises a water measuring tank 21, wherein the water measuring tank 21 is provided with a water inlet and a water outlet, the water inlet is communicated with the water inlet pipeline, and the water outlet is communicated with the inner barrel 17; and the water outlet is provided with a water outlet control device for controlling the opening of the water outlet when the water quantity in the equivalent water tank 21 reaches a set value.

As an embodiment of this embodiment, as shown in fig. 21, the measuring water tank 21 is disposed at the bottom of the inner tub 17, the measuring water device includes a water level detecting device 22 for detecting the measuring water tank 21, the water outlet control device is a water tank drain pump 23, and the water tank drain pump 23 starts the water tank drain pump 23 to pump the water in the measuring water tank 21 into the inner tub 17 when the water level detecting device 22 detects that the water level in the measuring water tank 21 reaches a set value.

As an embodiment of this embodiment, as shown in fig. 22, the water measuring tank 21 is disposed at the upper portion of the inner cylinder 17, the water measuring device includes a water level detecting device 22 for detecting the water measuring tank, the water outlet control device is a water tank drain valve 25, and the water tank drain valve 25 opens to drain the water in the water measuring tank 21 into the inner cylinder when the water level detecting device 22 detects that the water level in the water measuring tank 21 reaches a set value.

The water level detecting device 22 described in this embodiment is a liquid level sensor, which includes an air chamber and a sensor unit, and the air chamber is communicated with the water measuring tank. Alternatively, the water level detecting device 22 includes a plurality of water level detecting probes arranged in the water measuring tank along the depth direction thereof.

As an implementation manner of this embodiment, the water measuring tank 21 is disposed on the upper portion of the inner cylinder 17, the water outlet is disposed on the bottom wall of the water measuring tank 21, the water outlet control device is a tank check valve for keeping the water outlet normally closed, when the amount of water in the water measuring tank reaches a certain value, the tank check valve is opened under the action of water pressure gravity, and after the water in the water measuring tank 21 is discharged into the inner cylinder 17, the tank check valve is reset to keep the water outlet closed.

The water measuring tank 21 described in this embodiment is provided with an overflow hole 24, and the overflow hole 24 is connected to an overflow pipe for guiding out water overflowing from the water measuring tank.

Preferably, the drum washing machine comprises a drain line 8, said overflow line communicating with the drain line 8.

As an embodiment of the present embodiment, as shown in fig. 23, the water measuring device includes a heating device 26 provided in the water measuring tank 21 and a water temperature detecting device that detects the temperature of water in the water measuring tank.

The present embodiment also provides a control method of the drum washing machine, where the washing machine executes a washing/rinsing procedure, the washing machine controls washing water to enter the water measuring tank, when the water amount in the water measuring tank reaches a set value, water inflow is stopped, water in the water measuring tank is completely discharged into the inner drum, water inflow is restarted to enter the water measuring tank, and the above-mentioned steps are repeated until the water level in the inner drum reaches the set value, and water inflow is ended.

Furthermore, the washing machine controls the washing water to enter the water measuring tank, when the water amount in the water measuring tank reaches a set value, the water stops entering, the heating device is controlled to operate to heat the washing water, and when the water temperature detection device detects that the water temperature in the water measuring tank reaches the set value, all the water in the water measuring tank is discharged into the inner barrel.

Example eight

The embodiment mainly solves the problem of how to ensure the unbalanced air pressure of the sealed cabin of the drum washing machine with the non-porous inner barrel, and particularly, the water is cut off by a sudden electromagnetic valve, particularly a tap water pipe network to form negative pressure, and washing water in the sealed cabin is backwashed to the pipe network; or the inside has gas, the problem of difficult water intake.

As shown in fig. 24-26, the drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is a non-porous inner drum, and is used for containing washing water when washing clothes, and further includes an air pressure balancing mechanism for communicating the inner drum 17 with the external environment to balance the air pressure inside the inner drum.

When water enters, the air in the sealed cabin of the inner cylinder is pressurized and can overflow through the balancing mechanism, so that the air pressure balance is ensured.

When water is cut off suddenly, external atmosphere can enter the sealed cabin of the inner barrel rapidly, suck back is damaged, air pressure balance is guaranteed, and washing water is prevented from being sucked into a tap water pipe network.

Other air pressure balancing mechanisms can also ensure the air pressure balance of the inner cylinder during dehydration.

As an implementation manner of this embodiment, the air pressure balancing mechanism includes a pressure equalizing hole 27 disposed on the inner barrel 17, and one end of the pressure equalizing hole 27, which is communicated with the inside of the inner barrel 17, is disposed on the inner barrel 17 at a position close to the central rotation axis and is always higher than the highest water level position in the inner barrel 17.

The drum washing machine of the embodiment comprises a driving motor 16 and an inner drum shaft 13, wherein the driving motor 16 is in transmission connection with the inner drum 17 through the inner drum shaft 13 to drive the inner drum 17 to rotate, a pressure equalizing pore passage 27 is formed in the inner drum shaft 13 to communicate the inside of the inner drum 17 with the external environment, and the highest water level in the inner drum 17 is lower than that of the inner drum shaft 13. Thus, the water in the inner cylinder can be prevented from flowing out of the pressure equalizing pore passage.

The drum washing machine of the embodiment comprises an outer drum 18, wherein the inner drum 17 is arranged inside the outer drum 18, water discharged from the inner drum 17 is discharged through the outer drum 18, an inner drum door 6 for sealing the inner drum is arranged at the opening of the inner drum 17, the opening of the outer drum 18 is open, one end of a pressure equalizing channel 27 is communicated with the inside of the inner drum 17, and the other end of the pressure equalizing channel is arranged inside the outer drum 18 and communicated with the inside of the outer drum 18. In this way, the bore effluent is prevented from being collected within the outer cartridge 18.

Furthermore, in this embodiment, an inner cylinder drain hole is formed in a side wall of the inner cylinder 17, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open to drain water is installed on the outer cylinder 18.

Preferably, a locking mechanism for locking the rotation of the inner cylinder is further arranged on the outer cylinder 18, and the push rod mechanism pushes the one-way valve plug open for drainage after the locking mechanism locks the inner cylinder.

Further, the drum washing machine of the present embodiment includes a water inlet pipeline, the inner drum shaft 13 has a hollow channel 14 therein, which is communicated with the inside of the inner drum 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressure equalizing pore passage 27 and the hollow channel 14 are respectively communicated with the inside of the inner cylinder 17 and are arranged in a mutually isolated way. Thus, the gas in the sealed cabin of the inner cylinder can be smoothly discharged to keep the air pressure in the inner cylinder balanced, and simultaneously, the water leakage caused by the direct discharge of the inlet water from the pressure equalizing pore passage 27 can be prevented.

Specifically, the hollow channel 27 extends from one end to the other end along the central axis direction of the inner cylinder shaft, the pressure equalizing channel includes a first channel section and a second channel section, the first channel section is arranged in parallel with the hollow channel, one end of the first channel section is communicated with the inside of the inner cylinder, one end of the second channel section is communicated with the first channel section, and the other end of the second channel section extends to the peripheral wall of the inner cylinder shaft and is communicated with the inside of the outer cylinder.

Preferably, the second pore channel section and the first pore channel section are vertically arranged to form an L-shaped pressure equalizing pore channel.

Further, the inner cylinder shaft 13 is connected with a driving motor 16, the driving motor 16 comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor to be communicated with the hollow channel of the inner cylinder shaft.

Preferably, a first dynamic sealing structure is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel of the inner cylinder shaft.

The drum type washing machine of this embodiment, set up a plurality of dehydration holes on the lateral wall of inner tube 17, all install the centrifugal valve on the dehydration hole, the centrifugal valve open under the effect of dehydration centrifugal force and dewater the drainage.

Example nine

As shown in fig. 27-31, the drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is a non-porous inner drum, and holds washing water when washing clothes, and further includes a pressurization mechanism and/or a pressure release mechanism for communicating the inner drum with the external environment to balance the air pressure inside the inner drum 17.

The pressurizing mechanism described in this embodiment includes a pressurizing duct 28 and a negative pressure safety valve 29, the negative pressure safety valve 29 is disposed on the pressurizing duct 28, and is used for conducting the pressurizing duct 28 in one way when the internal pressure of the inner cylinder 17 is smaller than the atmospheric pressure of the external environment, the external environment gas enters the inner cylinder 17 from the pressurizing duct 28 to be pressurized until the internal pressure of the inner cylinder 17 is balanced with the atmospheric pressure of the external environment, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief hole 30 and a positive pressure safety valve 31, the pressure relief hole 30 is disposed at a position close to the rotation center axis on the inner cylinder 17 and is always higher than the highest water level position in the inner cylinder 17, the positive pressure safety valve 31 is disposed on the pressure relief hole 30, and is used for conducting the pressure relief hole 30 in one way for pressure relief when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the external environment, until the internal pressure of the inner cylinder 17 is balanced with the atmospheric pressure of the external environment, and the positive pressure safety valve 31 is closed.

As shown in fig. 28, when water enters, the air in the sealed chamber of the inner cylinder 17 is pressurized, and once the pressure is greater than the set value of the positive pressure safety valve, the positive pressure safety valve is opened, and the air can overflow through the pressure relief hole, so that the air pressure balance is ensured.

As shown in fig. 28, when water is suddenly cut off, the air in the sealed cabin of the inner cylinder 17 is pressurized, once the air is smaller than the set value of the positive pressure safety valve, the external atmosphere can rapidly enter the sealed cabin and destroy suck-back, so that the air pressure balance is ensured, and the washing water is prevented from being sucked into a tap water pipe network.

The drum washing machine of the embodiment comprises a driving motor 16 and an inner drum shaft 13, wherein the driving motor 16 is in transmission connection with the inner drum 17 through the inner drum shaft 13 to drive the inner drum 17 to rotate, a pressurizing pore channel 28 and/or a pressure relief pore channel 30 are/is formed in the inner drum shaft 13 to communicate the inside of the inner drum 17 with the external environment, and the highest water level in the inner drum 17 is lower than the inner drum shaft 13.

The drum washing machine of the embodiment comprises an outer drum 18, wherein an inner drum 17 is arranged inside the outer drum 18, water discharged from the inner drum 17 is discharged from the outer drum 18, an inner drum door 6 for sealing the inner drum is installed at a drum opening of the inner drum 17, the drum opening of the outer drum 18 is opened, one end of a pressurizing pore passage 28 and/or a pressure relief pore passage 30 is communicated with the inside of the inner drum 17, and the other end of the pressurizing pore passage and/or the pressure relief pore passage 30 is arranged inside the outer drum 18 and.

The drum washing machine of the embodiment comprises a water inlet pipeline, wherein a hollow channel 14 communicated with the inside of an inner drum 17 is arranged in an inner drum shaft 13, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressure relief duct 30 and the hollow channel 14 are respectively communicated with the interior of the inner cylinder 17 and are arranged in an isolated manner.

As shown in fig. 28 and 29, the hollow passage 14 extends from one end to the other end along the central axis of the inner cylinder shaft 13, the pressure relief duct 30 includes a first duct section and a second duct section, the first duct section is disposed in parallel with the hollow passage, one end of the first duct section is communicated with the inside of the inner cylinder, one end of the second duct section is communicated with the first duct section, and the other end of the second duct section extends to the outer peripheral wall of the inner cylinder shaft and is communicated with the inside of the outer cylinder;

preferably, the second duct section and the first duct section are arranged perpendicularly to form an L-shaped pressure relief duct.

The drum washing machine of the embodiment comprises a water inlet pipeline, wherein a hollow channel 14 communicated with the inside of an inner drum 17 is arranged in an inner drum shaft 13, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressurizing port 28 communicates with the hollow passage 14.

Further, the hollow passage 14 extends from one end to the other end along the central axis direction of the inner cylinder shaft 13, one end of the pressurizing duct 28 is communicated with the hollow passage 14, and the other end extends to the outer peripheral wall of the inner cylinder shaft 13 and is communicated with the inside of the outer cylinder 18.

Preferably, the pressurizing port 28 and the hollow passage 14 are arranged perpendicular to each other.

The inner cylinder shaft is connected with the driving motor, the driving motor comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor to be communicated with the hollow channel of the inner cylinder shaft.

As shown in fig. 30 and 31, the pressurizing duct 28 and the pressure relief duct 30 are both disposed on the inner cylinder shaft 13, and the openings for communicating with the atmosphere are both inside the outer cylinder 18; the openings of the sealed cabins communicated with the inner cylinder 17 are all arranged at the inner side of the water inlet channel 14 of the inner cylinder shaft 13.

It is contemplated that the preferred pressurization and

depressurization passageways

28, 30 are both disposed on the inner barrel shaft 13 and the vent to atmosphere opening is both inside the outer barrel 18; the openings of the sealed cabins communicated with the inner cylinder 17 are all arranged at the inner side of the sealed cabins.

The above embodiments may be implemented individually or in combination with each other.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A drum washing machine characterized by comprising:

an inner barrel;

2. A drum washing machine according to claim 1, characterized in that the detection device comprises a detection terminal, the detection terminal is arranged on the opening of the inner drum, and the detection terminal has a first physical state corresponding to the opening of the door of the inner drum and a second physical state corresponding to the closing of the door of the inner drum.

3. A drum washing machine according to claim 2, characterized in that the detection terminal is a detection switch, the detection switch is arranged at the opening of the inner drum, and the detection switch has a first physical state of normally open/normally closed and a second physical state of closing/opening under the trigger of the inner drum door when the inner drum door is closed.

4. A drum washing machine according to claim 1, characterized in that the detection device comprises a detection terminal, the detection terminal is arranged on the opening of the inner drum, and the detection terminal can generate a first signal corresponding to the opening of the door of the inner drum and a second signal corresponding to the closing of the door of the inner drum.

5. A drum washing machine according to any one of claims 2-4, characterized in that one side of the inner drum door is rotatably mounted on the opening of the inner drum through an inner drum door hinge, the detection terminal is arranged on the opening of the inner drum at a position close to the inner drum door hinge, and the detection terminal is contacted with the inner drum door hinge when the inner drum door is closed;

6. A drum washing machine according to any one of claims 1-5, characterized in that the detection device comprises a main body, a communication module is arranged on the main body and is used for being in communication connection with a main control panel of the washing machine, and the communication module is arranged on the inner drum;

7. A drum washing machine according to claim 6, characterized in that the detection terminal is electrically connected with the communication module;

8. A drum washing machine according to claim 6, characterized in that the main body is further provided with a power supply module, and the power supply module is electrically connected with the communication module;

9. A control method of a drum washing machine according to any one of claims 1-8, characterized in that the drum washing machine receives the detection signal of the detection device to judge whether the inner drum door is closed in place.

10. The control method of claim 9, wherein after the drum washing machine receives the control command for starting the washing program, the detection signal of the detection device is obtained to judge whether the inner drum door is closed in place, if so, the washing program is started, and if not, the washing program is suspended;