CN111058236B - Drum washing machine - Google Patents
Drum washing machine Download PDFInfo
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- CN111058236B CN111058236B CN201911233738.1A CN201911233738A CN111058236B CN 111058236 B CN111058236 B CN 111058236B CN 201911233738 A CN201911233738 A CN 201911233738A CN 111058236 B CN111058236 B CN 111058236B
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- drum
- inner cylinder
- air
- washing machine
- inner drum
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- 238000005406 washing Methods 0.000 title claims abstract description 57
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The invention provides a drum washing machine, which comprises an inner drum and an air pressure balancing system, wherein the air pressure balancing system is provided with an air outlet end for introducing balanced air flow into the middle part of the inner drum and is used for balancing the air pressure of the middle part in the inner drum and the peripheral part in the inner drum. The invention introduces balanced air flow into the middle part of the inner cylinder through the air pressure balancing system, thus the air pressure of the middle part in the inner cylinder and the air pressure of the periphery part in the inner cylinder can be balanced in the running process of the inner cylinder, and the problem of vibration noise of the inner cylinder and the inner and outer cylinder assembly caused by pressure difference in the inner cylinder is avoided.
Description
Technical Field
The invention relates to the technical field of washing equipment, in particular to a drum washing machine.
Background
A washing machine, which is a home appliance, is becoming an indispensable part of life of people, and a full-automatic pulsator washing machine, which is a main type of washing machine, is also becoming more and more widely applied. The existing full-automatic pulsator washing machine generally works in a mode that when washing and rinsing are carried out, the driving device drives the pulsator of the washing machine to rotate positively and negatively through the decelerating clutch device, and when dewatering is carried out, the driving device drives the pulsator of the washing machine and the washing cylinder to rotate synchronously at high speed through the decelerating clutch device.
As shown in fig. 1 and 2, the washing machine flows in a radial direction (i.e., centrifugal air flow P1) by centrifugal force during dehydration, and only a small amount of return air flow P2 flows back to the center of the inner tub through a gap between the inner tub and the outer tub. In addition, with the design of the limitation of the washing machine, the gap between the inner cylinder and the outer cylinder is in a trend of smaller and smaller, the amount of the backflow airflow P2 is reduced, at the moment, the pressure of the center of the inner cylinder is less than that of the periphery, and the pressure difference is generated in the inner cylinder, so that the vibration noise problem of the inner cylinder and the inner cylinder assembly and the outer cylinder assembly is caused.
Several patents have proposed solutions to this problem, for example, application number: EP20170873763, european patent No. WASHING MACHINE, discloses a vent hole provided in the rear of the outer tub, and a sealing cap provided at the top of the vent hole to prevent water and foam from overflowing. However, the scheme belongs to an open type arrangement, foreign matters are easy to fall into, and when the temperature in the cylinder is too high, moist and hot air can be leaked from the opening, so that electric devices and the like between the cylinder assembly and the box body are damaged.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a drum washing machine, which adopts the following technical scheme:
A drum washing machine includes an inner drum, and further includes an air pressure balancing system having an air outlet end for introducing a balancing air flow into a middle portion of the inner drum for balancing air pressure of the middle portion of the inner drum and a peripheral portion of the inner drum.
Further, the air pressure balancing system comprises an air pipeline, wherein the air pipeline is provided with an air inlet end communicated with the periphery in the inner cylinder and an air outlet end communicated with the middle part of the inner cylinder, and is used for guiding the centrifugal air flow at the periphery in the inner cylinder back to the middle part of the inner cylinder for air pressure balancing.
Further, the air inlet pipe comprises an outer cylinder, the inner cylinder is arranged in the outer cylinder, the air inlet end of the air inlet pipe is communicated with the bottom wall of the outer cylinder and corresponds to the position of the peripheral wall of the inner cylinder and/or the peripheral wall of the outer cylinder, and the air outlet end of the air inlet pipe penetrates through the center position of the bottom wall of the outer cylinder and is led to the center position of the inner cylinder.
Further, the device comprises an inner cylinder shaft and a driving motor, wherein one end of the inner cylinder shaft is fixedly connected with the power output end of the driving motor, and the other end of the inner cylinder shaft penetrates through the center position of the bottom wall of the outer cylinder and is fixedly connected with the center position of the bottom wall of the inner cylinder; the inner cylinder shaft is internally provided with a through hollow channel, the air outlet end of the air vent pipeline is communicated with the hollow channel, and the center position of the bottom wall of the inner cylinder is provided with an air outlet communicated with the hollow channel.
Further, the driving motor comprises a stator and a rotor, the rotor is fixedly connected with the inner cylinder shaft, a through hole is formed in the center of the rotor, and the ventilation pipeline penetrates through the through hole of the rotor to be communicated with a hollow channel of the inner cylinder shaft;
Preferably, a first dynamic sealing structure is arranged between the ventilation pipeline and the through hole of the rotor.
Further, the ventilation pipeline comprises a main pipeline and a plurality of branch pipelines which are respectively communicated with the main pipeline, the main pipeline is communicated with the hollow channel of the inner cylinder shaft, and the communication points of the branch pipelines and the bottom wall and/or the peripheral wall of the outer cylinder are uniformly distributed along the periphery of the peripheral wall of the inner cylinder.
Further, the inner cylinder is a pore-free inner cylinder with a closed cylinder wall, an opening of the inner cylinder is provided with an inner cylinder door capable of being opened/closed in a sealing way, and a washing cavity for independently containing washing water during washing is formed between the inner cylinder door and the inner cylinder; the drum washing machine also comprises a water inlet pipeline which is communicated with the hollow channel of the inner drum shaft and used for feeding water into the inner drum.
Further, a first control valve for controlling the on-off of the water inlet pipe is arranged on the water inlet pipe, a second control valve for controlling the on-off of the water inlet pipe is arranged on the air vent pipe, and the first control valve and the second control valve are respectively and electrically connected with a main control board of the washing machine.
Further, the air pressure balancing system comprises an air pipeline, wherein the air pipeline is provided with an air inlet end communicated with the external environment and an air outlet end communicated with the middle part of the inner cylinder, and is used for guiding air flow in the external environment to the middle part of the inner cylinder for air pressure balancing.
Further, the device comprises an inner cylinder shaft and a driving motor, wherein one end of the inner cylinder shaft is fixedly connected with the power output end of the driving motor, and the other end of the inner cylinder shaft is fixedly connected with the center position of the bottom wall of the inner cylinder; the inner cylinder shaft is internally provided with a through hollow channel, the air outlet end of the air vent pipeline is communicated with the hollow channel, and the center position of the bottom wall of the inner cylinder is provided with an air outlet communicated with the hollow channel;
the air inlet end of the air pipe is higher than the highest water level in the inner cylinder, or a control valve for controlling the on-off of the air pipe is arranged on the air pipe.
The invention introduces balanced air flow into the middle part of the inner cylinder through the air pressure balancing system, thus the air pressure of the middle part in the inner cylinder and the air pressure of the periphery part in the inner cylinder can be balanced in the running process of the inner cylinder, and the problem of vibration noise of the inner cylinder and the inner and outer cylinder assembly caused by pressure difference in the inner cylinder is avoided.
Drawings
FIG. 1 is a front view of a drum washing machine according to an embodiment of the present invention;
FIG. 2 is a sectional view of the conventional drum washing machine taken along the A-A plane of FIG. 1;
Fig. 3 is a sectional view of a drum washing machine according to an embodiment of the present invention taken along the A-A plane of fig. 1.
Detailed Description
A drum washing machine of the present invention will be described in detail with reference to the accompanying drawings:
As shown in fig. 1 and 3, the present embodiment provides a drum washing machine, which includes an inner drum 8, and further includes an air pressure balancing system having an air outlet end for introducing a balancing air flow into the middle portion of the inner drum for balancing air pressure between the middle portion of the inner drum and the peripheral portion of the inner drum.
In the embodiment, the balance air flow is introduced into the middle part of the inner cylinder through the air pressure balance system, so that the air pressure of the middle part in the inner cylinder and the air pressure of the periphery part in the inner cylinder can be balanced in the operation process of the inner cylinder, and the problem of vibration noise of the inner cylinder and even the inner and outer cylinder assemblies caused by pressure difference in the inner cylinder is avoided.
The middle part of the inner cylinder 8 in this embodiment refers to a columnar area centered on the central axis of the inner cylinder, and the peripheral part of the inner cylinder refers to an area around the inner middle part of the inner cylinder, preferably, the radius of the columnar area is smaller than 1/2 of the radius of the inner cylinder.
In order to guide the balanced air flow to the middle part of the inner cylinder, the air pressure balancing system in this embodiment includes an air pipe 15, where the air pipe 15 has an air inlet end communicating with the peripheral part of the inner cylinder 8 and an air outlet end communicating with the middle part of the inner cylinder 8, and is used to guide the centrifugal air flow of the peripheral part of the inner cylinder 8 back to the middle part of the inner cylinder 8 for air pressure balancing.
The proposal provided by the embodiment is that the air flow in the high-pressure area inside the inner cylinder 8 is led back to the low-pressure area through the ventilation pipeline 15, so that self-balancing of the air flow is realized, external air is not required to be additionally led in, and leakage of damp and hot air is not caused.
In this embodiment, according to the trend of the centrifugal airflow P1 in the inner cylinder 8 during the rotation of the inner cylinder 8: the central part of the inner cylinder 8 is dispersed towards the periphery of the inner cylinder 8 under the centrifugal action, and the air pressure balance system communicates the periphery of the inner cylinder 8 with the central part of the inner cylinder 8 through the air pipeline 15, so that the centrifugal air flow P1 returns to the central part of the inner cylinder 8 through the air pipeline 15 again to supplement air pressure in the central part of the inner cylinder 8, balance the air pressure in the central part and the periphery of the inner cylinder 8, and reduce or even avoid pressure difference in the inner cylinder.
Further, in order to communicate the peripheral portion of the inner tub 8 with the middle portion, the drum washing machine of this embodiment includes an outer tub 7, the inner tub 8 is disposed in the outer tub 7, an air inlet end of the air duct 15 communicates with a bottom wall of the outer tub 7 and corresponds to a peripheral wall position of the inner tub 8 and/or a peripheral wall of the outer tub, and an air outlet end of the air duct 15 passes through a central position of the bottom wall of the outer tub 7 to a central position of the inner tub 8.
Because the structural feature of the drum washing machine, in the working process, the inner cylinder is in a rotating state, so that the air inlet end of the ventilation pipeline 15 is communicated to the outer cylinder 8, the backflow of the centrifugal airflow P1 can be realized, and the realization is easier.
How the air outlet end of the ventilation pipeline 15 of the embodiment is communicated to the middle part of the inner cylinder 8 is a key point of the invention, and as an implementation manner of the embodiment, the drum washing machine of the embodiment comprises an inner cylinder shaft 10 and a driving motor 9, wherein one end of the inner cylinder shaft 10 is fixedly connected with the power output end of the driving motor 9, and the other end of the inner cylinder shaft penetrates through the central position of the bottom wall of the outer cylinder 7 and is fixedly connected with the central position of the bottom wall of the inner cylinder 8; the inner cylinder shaft 10 is internally provided with a through hollow channel, the air outlet end of the air pipe 15 is communicated with the hollow channel, and the center position of the bottom wall of the inner cylinder 8 is provided with an air outlet communicated with the hollow channel.
Further, the driving motor 9 includes a stator 91 and a rotor 92, the rotor 92 is fixedly connected with the inner cylinder shaft 10, a through hole 93 is disposed at the center of the rotor 92, and the ventilation pipeline 15 is communicated with the hollow channel of the inner cylinder shaft 10 through the through hole 93 of the rotor 92.
Preferably, a first dynamic sealing structure is arranged between the ventilation pipeline 15 and the through hole 93 of the rotor 92, and a second sealing structure is arranged between the through hole of the rotor 92 and the hollow channel of the inner cylinder shaft 10.
In order to better balance the peripheral air flow in the inner cylinder 8 with the central air flow in the inner cylinder, the ventilation pipeline 15 in this embodiment includes a main pipeline and a plurality of branch pipelines respectively communicated with the main pipeline, the main pipeline is communicated with the hollow channel of the inner cylinder shaft, and the communication points between the branch pipelines and the bottom wall and/or the peripheral wall of the outer cylinder are uniformly distributed along the periphery of the peripheral wall of the inner cylinder.
As an implementation mode of the invention, the inner cylinder 8 is a pore-free inner cylinder with a closed cylinder wall, an inner cylinder door capable of being opened/closed is arranged at a cylinder opening of the inner cylinder 8 in a sealing manner, and a washing water washing cavity is independently arranged between the inner cylinder door and the inner cylinder 8 during washing; the drum washing machine further comprises a water inlet pipeline which is communicated with the hollow channel of the inner drum shaft 10 and used for feeding water into the inner drum.
The drum washing machine with the nonporous inner drum of the embodiment is communicated with the hollow channel of the inner drum shaft 10 through the water inlet pipeline to realize water inlet, meanwhile, the water inlet pipeline and the ventilation pipeline 15 are both communicated with the hollow channel of the inner drum shaft 10, the water inlet pipeline is provided with a first control valve for controlling the on-off of the drum washing machine, the ventilation pipeline 15 is provided with a second control valve for controlling the on-off of the drum washing machine, and the first control valve and the second control valve are respectively electrically connected with a main control panel of the washing machine.
In addition, in order to realize the drainage and dewatering drainage of the pore-free inner cylinder, 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 water when the inner cylinder reaches a certain rotating speed, so that the water outlet simultaneously discharges centrifugal airflow P1 between the inner cylinder and the outer cylinder in the high-speed dewatering process, and then the centrifugal airflow P1 is led back to the middle part of the inner cylinder 8 through a ventilation pipeline 15 to perform air pressure balance.
As another embodiment of the present invention, the air pressure balancing system according to the present embodiment includes an air pipe 15, where the air pipe 15 has an air inlet end communicating with the external environment and an air outlet end communicating with the middle part of the inner cylinder 8, and is configured to guide the air flow in the external environment to the middle part of the inner cylinder 8 for air pressure balancing.
The air pressure balancing system provided by the embodiment is used for communicating the external environment with the middle part of the inner cylinder 8, so that the external air pressure enters the middle part of the inner cylinder 8 to perform air pressure balancing.
Further, the drum washing machine of the embodiment comprises an inner drum shaft 10 and a driving motor 9, wherein one end of the inner drum shaft 10 is fixedly connected with the power output end of the driving motor 9, and the other end of the inner drum shaft is fixedly connected with the center position of the bottom wall of the inner drum 8; the inside of the inner cylinder shaft 10 is provided with a through hollow channel, the air outlet end of the air vent pipeline 15 is communicated with the hollow channel, and the center position of the bottom wall of the inner cylinder 8 is provided with an air outlet communicated with the hollow channel; the air inlet end of the air pipe 15 is higher than the highest water level in the inner cylinder 8, or a control valve for controlling the on-off of the air pipe is arranged on the air pipe, so that washing water in the inner cylinder can be prevented from flowing out of the air pipe 15.
The drum washing machine of the present embodiment further has a casing 1, the casing 1 including: top deck panel 4, front panel, back panel and bottom panel. The top of the front panel is provided with a control panel 3, and the bottom plate is provided with feet 12 for supporting the whole washing machine. The inside urceolus 7 that has of shell 1, the urceolus 7 is interior to have set up inner tube 8 coaxial, and the top of urceolus 7 has the basin, sets up detergent box 5 in the basin, and the basin is linked together with urceolus 7 through the water inlet pipeline, sets up water intaking valve 6 on the water inlet pipeline. The outer tub 7 is mainly for collecting the drain water of the inner tub 8 and the drain water of the inner tub 8 by high-speed centrifugal dehydration. The inner drum 8 rotates, preferably with lifting ribs 11, to continuously lift, drop and beat the laundry, so as to wash the laundry. The outer cylinder 7 has a center mounting hole, and a bearing is mounted and fixed. An inner cylinder shaft 10 fixedly connected with the inner cylinder 8 passes through the bearing and is connected with a driving motor 9, and an openable/closable door 2 is arranged on the shell 1. The drum washing machine further comprises a drainage pipeline 13 communicated with the outer drum 7, and a drainage control device 14 is arranged on the drainage pipeline 13.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (8)
1. The drum washing machine comprises an inner drum and is characterized by further comprising an air pressure balancing system, wherein the air pressure balancing system is provided with an air outlet end for introducing balanced air flow into the middle part of the inner drum and is used for balancing the air pressure of the middle part in the inner drum and the air pressure of the periphery part in the inner drum; the air pressure balancing system comprises an air pipeline, wherein the air pipeline is provided with an air inlet end communicated with the periphery in the inner cylinder and an air outlet end communicated with the middle of the inner cylinder, and air flow in a high-pressure area in the inner cylinder is led back to a low-pressure area through the air pipeline to perform self-balancing of air flow; the centrifugal air flow in the inner cylinder is dispersed from the middle part of the inner cylinder to the periphery part in the inner cylinder under the centrifugal action, the air pressure balance system connects the periphery part of the inner cylinder with the middle part of the inner cylinder through the air passage, and the centrifugal air flow returns to the middle part of the inner cylinder through the air passage to supplement the air pressure in the middle part of the inner cylinder.
2. The drum type washing machine as claimed in claim 1, comprising an outer drum, wherein the inner drum is disposed in the outer drum, the air inlet end of the air duct is connected to the bottom wall of the outer drum and corresponds to the circumferential wall position of the inner drum and/or the circumferential wall of the outer drum, and the air outlet end of the air duct passes through the center position of the bottom wall of the outer drum to the center position of the inner drum.
3. The drum type washing machine as claimed in claim 2, comprising an inner drum shaft and a driving motor, wherein one end of the inner drum shaft is fixedly connected with a power output end of the driving motor, and the other end of the inner drum shaft penetrates through a bottom wall center position of the outer drum and is fixedly connected with a bottom wall center position of the inner drum; the inner cylinder shaft is internally provided with a through hollow channel, the air outlet end of the air vent pipeline is communicated with the hollow channel, and the center position of the bottom wall of the inner cylinder is provided with an air outlet communicated with the hollow channel.
4. A drum washing machine as claimed in claim 3, wherein the driving motor comprises a stator and a rotor fixedly connected with the inner drum shaft, a through hole is provided at the center of the rotor, and the ventilation pipe is communicated with the hollow passage of the inner drum shaft through the through hole of the rotor.
5. The drum type washing machine as claimed in claim 4, wherein a first dynamic sealing structure is provided between the ventilation pipe and the through hole of the rotor.
6. A drum washing machine as claimed in claim 3, wherein the ventilation pipeline comprises a main pipeline and a plurality of branch pipelines respectively communicated with the main pipeline, the main pipeline is communicated with the hollow passage of the inner drum shaft, and the communication points of the branch pipelines and the bottom wall and/or the peripheral wall of the outer drum are uniformly distributed along the periphery of the peripheral wall of the inner drum.
7. The drum type washing machine as claimed in claim 3, wherein the inner drum is a non-porous inner drum with a closed drum wall, an inner drum door capable of being opened/closed is installed at a drum opening of the inner drum in a sealing manner, and a washing water washing cavity is independently formed between the inner drum door and the inner drum during washing; the drum washing machine also comprises a water inlet pipeline which is communicated with the hollow channel of the inner drum shaft and used for feeding water into the inner drum.
8. The drum type washing machine as claimed in claim 7, wherein the water inlet pipe is provided with a first control valve for controlling the on-off state of the water inlet pipe, the air outlet pipe is provided with a second control valve for controlling the on-off state of the water outlet pipe, and the first control valve and the second control valve are respectively electrically connected with a main control board of the washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233738.1A CN111058236B (en) | 2019-12-05 | Drum washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233738.1A CN111058236B (en) | 2019-12-05 | Drum washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111058236A CN111058236A (en) | 2020-04-24 |
| CN111058236B true CN111058236B (en) | 2024-06-25 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545189A (en) * | 2008-03-26 | 2009-09-30 | 日立空调·家用电器株式会社 | Drum washing machine |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545189A (en) * | 2008-03-26 | 2009-09-30 | 日立空调·家用电器株式会社 | Drum washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240509 Address after: Room 221, Sino German Ecological Park Management Committee, No. 2877, Tuanjie Road, Huangdao District, Qingdao, Shandong 266500 Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Country or region after: China Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Country or region before: China Applicant before: Haier Smart Home Co., Ltd. |
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| GR01 | Patent grant |