CN105986428B - washing machine - Google Patents
washing machine Download PDFInfo
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- CN105986428B CN105986428B CN201510053663.4A CN201510053663A CN105986428B CN 105986428 B CN105986428 B CN 105986428B CN 201510053663 A CN201510053663 A CN 201510053663A CN 105986428 B CN105986428 B CN 105986428B
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- washing machine
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- washing
- circulating water
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- 238000005406 washing Methods 0.000 title claims abstract description 221
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 302
- 238000001914 filtration Methods 0.000 claims abstract description 112
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000011045 prefiltration Methods 0.000 claims description 70
- 238000005086 pumping Methods 0.000 claims description 15
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 19
- 238000004891 communication Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
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- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
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- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The present invention provides a washing machine, comprising: and a circulating water filtering system configured to filter water discharged from the washing tub of the washing machine during a circulating water filtering stage of the washing machine to circulate back to the washing tub for reuse, wherein at least one component of the circulating water filtering system is installed outside the back plate of the washing machine. The invention makes special design for the arrangement position and/or the installation mode of the circulating water filtering system of the washing machine, so as not to obviously increase the thickness of the shell of the washing machine as much as possible, and can fully utilize the mould, the assembly process and the like in the production line of the original washing machine to manufacture the washing machine with the circulating water filtering system, thereby greatly reducing the manufacturing cost.
Description
Technical Field
The present invention relates to a washing machine, and more particularly, to a washing machine having a circulating water filtering system.
Background
The one-time washing routine of the existing conventional washing machine at the time of washing laundry generally includes water intake, washing-spin-drain, multiple rinsing-spin-drain, etc., wherein a large amount of fresh water is consumed for washing and each rinsing. The water used for washing or rinsing is discharged to the outside environment of the washing machine through a drain pipe. The water consumption in the whole washing process is relatively large, and water resources are greatly wasted. In order to achieve the aim of saving water, a circulating water filtering system can be adopted to filter the washing water and/or rinsing water of the washing machine so as to recycle the washing water and/or rinsing water.
In the existing water-saving washing machine with a circulating water filtering system, all components of the circulating water filtering system are arranged in a washing machine shell, so that the whole structure of the washing machine needs to be redesigned, and the mould, the assembly process and the like in the original washing machine production line of a washing machine manufacturer need to be correspondingly changed; resulting in a serious increase in manufacturing costs in such a water-saving washing machine.
In addition, in order to avoid increasing the area of washing machine more, when current water conservation washing machine installs circulating water filtration system in its washing machine casing, circulating water filtration system's each part dispersed arrangement, not only installation inconvenient, each part installation is insecure when still probably causing the operation, in addition, owing to increased water route and circuit in the washing machine inside, has the water route circuit to be apart from potential safety hazards such as too near.
Disclosure of Invention
The invention aims to overcome at least one defect of the water-saving washing machine in the prior art, and provides the washing machine which is manufactured by fully utilizing a die, an assembly process and the like in the original production line of the washing machine, so that the manufacturing cost is greatly reduced, and the circulating water filtering system of the washing machine is more convenient to install.
A further object of the present invention is to make the structure of the circulating water filtration system in the washing machine of the present invention more robust, making it more reliable to operate throughout the life of the washing machine.
To this end, the present invention provides a washing machine comprising:
a circulating water filtration system configured to filter water discharged from a wash tub of the washing machine during a circulating water filtration stage of the washing machine for recycling back into the wash tub for reuse, wherein
At least one component of the circulating water filtration system is mounted outside a back plate of the washing machine.
Optionally, the circulating water filtration system comprises:
a filtering assembly configured to filter water discharged from a washing tub of the washing machine at the circulating water filtering stage;
an air flow supply configured to provide an air flow to air-wash the filter assembly; and
a filtration system control circuit board configured to control at least the air flow supply device; wherein the method comprises the steps of
The at least one component includes one or more of the filter assembly, an airflow supply, and a control circuit board.
Optionally, the at least one component includes a filter assembly, an air flow supply, and a control circuit board.
Optionally, the circulating water filtration system further comprises:
a water pump disposed on the water production line of the filter assembly, the water pump being configured to pump the produced water of the filter assembly into the water production line during the circulating water filtration stage to return to the washing drum of the washing machine for reuse, and
the air flow supply device is further configured to provide air flow to air wash the filter assembly during the circulating water filtration stage,
the at least one component further comprises the suction pump.
Optionally, the washing machine further comprises:
and a mounting plate detachably fixed to an outside of the back plate of the washing machine, the at least one component being mounted to the outside of the back plate of the washing machine by being detachably fixed to the mounting plate.
Optionally, a vibration-proof pad is disposed between the mounting plate and the back plate of the washing machine.
Optionally, the mounting plate and the back plate are both provided with an access hole in the center.
Optionally, the washing machine further comprises:
and a cover installed outside a back plate of the washing machine to shield the at least one component installed outside the back plate inside the cover.
Optionally, the filter assembly comprises a pre-filter and a fine filter fixed together in a vertical direction, a water inlet controllably communicating with the washing drum is arranged at the lower end of the pre-filter, water from the washing drum flows to the fine filter vertically above the pre-filter through the water inlet of the pre-filter in the circulating water filtering stage, wherein
The lower end of the pre-filter is also provided with an air inlet which is controllably communicated with the water outlet cavity of the pre-filter so as to receive the air flow provided by the air flow supply device, and the air flow flows into the fine filter through the outlet of the water outlet cavity of the pre-filter to perform air washing on the filter assembly; and is also provided with
The fine filter is configured to controllably reverse drain residual water from its interior into the pre-filter to reverse flush the pre-filter.
Optionally, the water inlet of the pre-filter is also in controllable communication with an outlet line of the washing machine, so that water for back flushing the pre-filter flows through the water inlet to the outlet line.
Optionally, the cross sections of the pre-filter and the fine filter are elliptical or are both oblong.
Optionally, the washing machine further comprises:
a water pumping device configured to:
operating in a first pumping mode with a first lift in the circulating water filtering stage so as to convey water in the washing cylinder into the filtering component, wherein the water level in the filtering component is not higher than the lower edge of a concentrated discharge port of a fine filter in the filtering component;
and the second pump water mode with a second lift is operated in a washing stage of the filter assembly of the washing machine, wherein the second lift is larger than the first lift so as to pump water in the washing cylinder into the filter assembly to wash the filter assembly, and the washed water is discharged to the outside of the washing machine from an outer discharge pipeline of the washing machine through a concentrated discharge port of the fine filter.
The invention makes special design for the arrangement position and/or the installation mode of the circulating water filtering system of the washing machine, so as not to obviously increase the thickness of the shell of the washing machine as much as possible, and can fully utilize the mould, the assembly process and the like in the production line of the original washing machine to manufacture the washing machine with the circulating water filtering system, thereby greatly reducing the manufacturing cost.
Furthermore, by arranging the circulating water filtering system outside the back plate of the washing machine, the circulating water filtering system structure of the washing machine is more compact, and the circulating water filtering system structure in the washing machine is more convenient to install/detach and is more firm to install, so that the circulating water filtering system can operate more reliably in the whole service life of the washing machine.
In addition, the washing machine can conveniently realize water-electricity separation, and ensure safer operation of the washing machine.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic diagram of a washing machine according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a washing machine according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the washing machine of fig. 2 after the casing is mounted.
Detailed Description
Fig. 1 is a schematic diagram of a washing machine according to an embodiment of the present invention. Referring to fig. 1, as will be appreciated by those skilled in the art, a washing machine 100 in accordance with an embodiment of the present invention, like the conventional washing machine of the prior art, also includes a wash tub 12 disposed within a washing machine housing 80 (see fig. 2), the wash tub 12 generally being comprised of an outer tub and an inner tub rotatable within the outer tub. The upper part of the washing barrel 12 is provided with a clean water inlet which is connected with a tap water port through an external water inlet pipeline 11, and when a water inlet valve 13 on the external water inlet pipeline 11 is opened, clean water for washing or clean water for rinsing can be introduced into the washing barrel 12. A drain is typically provided at the bottom of the wash bowl 12 to drain water from the wash bowl 12.
The washing machine 100 of the present invention may further include a circulating water filtration system. The circulating water filtration system is configured to filter water discharged from the wash tub 12 of the washing machine 100 during a circulating water filtration stage of the washing machine 100 for recycling back into the wash tub 12 for reuse. The circulating water filtration stage may be, for example, a rinsing stage or a washing stage of the washing machine 100. For example, in the rinsing stage of the washing machine 100, the water in the washing tub 12 may be introduced into the circulating water filtration system, filtered and purified in the circulating water filtration system, and then recirculated back into the washing tub 12, and the rinsing stage may be referred to as a circulating water filtration stage.
In particular, at least one component of the circulating water filtration system is mounted outside the back plate 52 of the washing machine 100 (see fig. 2). All technicians prior to the present invention have placed all the components of the circulating water filtration system inside the washing machine housing 80, thereby significantly increasing the thickness of the washing machine 100, unduly increasing the floor space of the washing machine 100, and severely affecting consumer purchase. The inventors of the present application creatively provide at least one component of the circulating water filtration system outside the back plate 52 of the washing machine so as not to significantly increase the thickness of the casing 80 of the washing machine as much as possible, and can manufacture the washing machine 100 with the circulating water filtration system of the present invention using the original manufacturing line and mold.
Fig. 2 is a schematic structural view of a washing machine 100 according to an embodiment of the present invention. As shown in fig. 1 and 2, the circulating water filtration system may include a filtration assembly 25. The filter assembly 25 is configured to filter water discharged from the wash tub 12 of the washing machine 100 in a circulating water filtering stage. In particular, the filter assembly 25 of the circulating water filter system may be installed outside the back plate 52 of the washing machine 100. Those skilled in the art will appreciate that the filter assembly 25 may be mounted on the outside of the back plate 52 of the washing machine 100 alone or in combination with other components of the circulating water filter system.
In the preferred embodiment of the present invention, the filter assembly 25 may comprise a pre-filter 24 and a fine filter 26 fixed together in a vertical direction, the pre-filter 24 being provided at a lower end thereof with a water inlet 242 in controllable communication with the water outlet of the washing tub 12, and water from within the washing tub 12 flowing through the water inlet 242 of the pre-filter 24 to the fine filter 26 vertically above thereof during the circulating water filtering stage. In this embodiment, the pre-filter 24 and the fine filter 26 are provided as an integral assembly, by which the filter assembly 25 is made compact and more convenient to install/remove. In a preferred embodiment, the cross-sections of the pre-filter 24 and the fine filter 26 are both oval or both oblong, so that the pre-filter 24 and the fine filter 26 each have a flat shape. In this way, when the filter assembly 25 is mounted outside the back plate 52 of the washing machine 100, the magnitude of the increase in the overall thickness of the washing machine 100 due to the mounting of the filter assembly 25 outside the back plate 52 of the washing machine can be reduced.
In alternative embodiments of the invention, the filter assembly 25 may include only the fine filter 26. Of course in other embodiments, it is also possible to include one, two or more filters in series with the pre-filter 24 and the fine filter 26 to provide the desired multi-stage filtration of the water from the wash drum 12. As will be appreciated by those skilled in the art, if the circulating water filtration system includes only one filter, then that filter is the fine filter 26 described herein; if multiple filters are included in the circulating water filtration system, the most downstream filter is the fine filter 26 described herein.
In an embodiment of the present invention, the pre-filter 24 may include a water inlet chamber and a water outlet chamber, wherein the water inlet 242 is communicated with the water inlet chamber, and the water flowing into the water inlet chamber through the water inlet 242 flows into the water outlet chamber after being filtered by the filter membrane of the pre-filter 24. The water outlet cavity is provided with a water outlet for the filtered fluid to flow out of the filter. The prefilter 24 may be divided by a screen inside the prefilter into two chambers, one above the other, with the lower chamber serving as the inlet chamber and the upper chamber serving as the outlet chamber. The filter screen of the pre-filter 24 can adopt a single-layer or multi-layer filter screen mode, and impurities such as thread scraps in water are trapped upwards by utilizing water flow.
The fine filter 26 according to the embodiment of the present invention may include a water inlet, an inner cavity and a water outlet, wherein the inner cavity is filled with membrane wires, the inner cavity is communicated with the water inlet, the water inlet is communicated with the water outlet of the water outlet cavity of the pre-filter 24, and the water filtered by the pre-filter 24 enters the inner cavity from the water inlet of the fine filter 26, and flows out from the water outlet after being filtered by the inner membrane wires. The water outlet of the fine filter 26 is communicated with the water production pipeline 19, and the water filtered by the fine filter 26 is returned to the washing drum 12 through the water production pipeline 19.
In a preferred embodiment, the fine filter 26 is an ultrafiltration membrane module. A concentrate drain 262 may also be provided on the side wall of the fine filter 26 to allow for drainage of the air stream and/or the water stream that is used to air wash the fine filter 26. The rich drain 262 of the fine filter 26 communicates with the drain line 18 of the washing machine 100 through the rich drain line 21. A rich valve 16 is provided in the rich line 21 to open or close a passage between the rich port 262 and the discharge line 18. When the fine filter 26 is being air-washed or flushed, the concentrate discharge valve 16 is opened to allow air-washed or flushed fluid to be discharged from the discharge line 18 of the washing machine 100.
In some embodiments of the present invention, some residual water remains inside the fine filter 26 after certain phases of operation of the washing machine 100 are completed. It will be appreciated that the remaining water is due to the water entering the interior of the fine filter 26 not having sufficient power to flow out of the predetermined flow path, resulting in water remaining inside the fine filter 26. Specifically, for example, in the circulating water filtering stage, water in the washing drum 12 sequentially enters the pre-filter 24 and the fine filter 26, and is filtered and then circulated back into the washing drum 12 for reuse; after the end of the circulating water filtration phase, the water in the fine filter 26 is forced to end the filtration of the produced water due to the loss of power, and the unfiltered water and/or the filtered water retained or remaining inside it is the "residual water" inside the fine filter 26. For example, in the filter assembly washing stage of washing the filter assembly 25, water in the washing drum 12 enters the filter assembly 25 to be washed, and the washed water is discharged out of the washing machine 100 through the concentrated discharge port 262 of the fine filter 26; when the filter assembly flushing phase is completed, some of the water entering the interior of the fine filter 26 to flush it will not flow out of its concentrate outlet 262 due to a loss of power, and will remain or remain inside the fine filter 26 as "residual water" therein. This surplus water in the fine filter 26 will flow downwards from its water inlet under the influence of gravity. Because of the height difference between the water inlet of the fine filter 26 and the filter screen of the pre-filter 24, the residual water in the fine filter 26 flows from above to the filter screen of the pre-filter 24 at a certain flow rate, and the filth such as filth under the filter screen is washed away, so that the filter screen of the pre-filter 24 is backwashed.
The water inlet 242 of the pre-filter 24 may also be in controllable communication with the drain line 18 of the washing machine 100 such that water that backflushes the pre-filter 24 flows through the water inlet 242 to the drain line 18. For example, a drain valve 17 may be provided between the water inlet 242 of the pre-filter 24 and the drain line 18, and the drain valve 17 is controlled to control whether water in the wash tub 12 or the pre-filter 24 is drained out of the washing machine 100. In one embodiment, the water inlet 242 of the pre-filter 24 is directly connected to the inlet and outlet flow path 29, and the inlet and outlet flow path 29 is connected to the drain port of the wash tub 12 and the drain line 18 of the washing machine 100, respectively, by pipes. That is, the flow path for introducing water in the wash tub 12 into the pre-filter 24 and the flow path for discharging water in the pre-filter 24 out of the washing machine 100 share the inlet/outlet flow path 29. In the embodiment shown in fig. 2, one bottom corner of the washing machine back plate 52 has an opening from which the discharge line 18 of the washing machine 100 extends outwardly from the interior of the housing 80 of the washing machine 100. The rich drain line 21 communicates with the drain line 18 at the opening through which the inlet and outlet flow path 29 extends into the interior of the housing 80 of the washing machine 100, in controllable communication with the drain opening of the wash tub 12 and the drain line 18, respectively.
In the preferred embodiment of the present invention, the fine filter 26 is configured to controllably drain the remaining water from its interior back into the pre-filter 24 after the end of the circulating water filtration stage and/or the filter assembly flushing stage to back flush the pre-filter 24. The invention utilizes the residual water in the fine filter 26 after the circulating water filtering stage and/or the flushing stage of the filtering component to carry out back flushing on the pre-filter 24, reasonably utilizes the water source and has a certain cleaning effect on the filter screen of the pre-filter 24.
In some embodiments, to air wash the filter assembly 25, the circulating water filtration system may further include an air flow supply 32. The air flow supply 32 is configured to provide an air flow to air wash the filter assembly 25. Accordingly, an air inlet port is also provided at the lower end of the pre-filter 24 in controllable communication with the water outlet chamber of the pre-filter 24 to receive the air flow provided from the air flow supply 32. The air flow flows into the fine filter 26 through the water outlet of the water outlet cavity of the pre-filter 24, and the filter assembly 25 is air-washed. In some embodiments, the air supply 32 may be an air pump disposed at the air inlet of the filter assembly 25 or the pre-filter 24, and the air outlet of the air pump is in communication with the air inlet of the filter assembly 25 via an air flow line. A one-way valve 34 is provided in the air flow line to allow air flow only from the air outlet of the air pump to the air inlet of the filter assembly 25 and not to allow air flow within the filter assembly 25 to the air outlet of the air pump. In some embodiments of the present invention, the air flow supply 32 may be mounted outside the back plate 52 of the washing machine 100. Those skilled in the art will appreciate that the air flow supply 32 may be mounted on the outside of the back plate 52 of the washing machine 100 alone or in combination with other components of the circulating water filtration system on the outside of the back plate 52 of the washing machine 100.
In a further embodiment of the present invention, to increase the backflushing effect of the residual water in the fine filter 26 on the screen of the prefilter 24, the flow path between the prefilter water inlet 242 and the drain of the wash bowl 12, the flow path between the prefilter water inlet 242 and the drain line 18, and the flow path between the concentrate drain 262 of the fine filter 26 and the drain line 18 may be broken after the circulating water filtration stage and/or the filter assembly flushing stage is completed. The air flow supply 32 is then turned on for a set time to supply air flow into the filter assembly 25. In this case, since the air flow in the filter assembly 25 is not in and out, the pressure inside the fine filter 26 increases. When the pressure inside the fine filter 26 reaches a preset value, the drain valve 17 is opened, and at this time, the residual water (possibly mixed with air flow) in the fine filter 26 is quickly drained back from the water inlet of the fine filter 26 under the action of the internal pressure, and the filter screen of the pre-filter 24 is backwashed. The embodiment of the invention ensures that the residual water in the fine filter 26 reversely washes the filter screen of the pre-filter 24 under the action of internal pressure by supplying air flow to the inside of the fine filter 26, thereby having better backflushing effect.
The washing machine 100 of the embodiment of the present invention may further include a water suction pump 28 provided on the water production line 19 of the filter assembly 25. The suction pump 28 is configured to pump the produced water of the filter assembly 25 into the produced water line 19 during the circulating water filtration stage for reuse in the wash tub 12 of the washing machine 100. In some embodiments of the present invention, the water pump 28 may be mounted outside the back plate 52 of the washing machine 100. Those skilled in the art will appreciate that the water pump 28 may be mounted on the outside of the back plate 52 of the washing machine 100 alone or in combination with other components of the circulating water filtration system on the outside of the back plate 52 of the washing machine 100.
In a further embodiment of the invention, the air flow supply 32 is configured to provide an air flow for air washing the filter assembly 25 during the circulating water filtration stage. The fine filter 26 of the present embodiment may have water-permeable and air-impermeable membrane filaments inside. Because the membrane wires have the characteristics of water permeation and air impermeability, after the water to be filtered and the air flow for washing enter the fine filter 26, water can penetrate through the membrane wires (or the filtering membrane) and enter the inner cavity of the membrane wires, and then the water in the inner cavity of the membrane wires (namely, produced water) is pumped into the produced water pipeline 19 of the filtering assembly 25 by the water pump 28. And impurities in the water are captured by the surface of the membrane wire or the filtering membrane. As the air flow continuously flows from the surface of the membrane wire or the filtering membrane while water is filtered, impurities on the surface of the membrane wire or the filtering membrane can be driven to move upwards without being deposited on the surface of the membrane wire or the filtering membrane. The air-washed air flow may flow out of the rich drain 262 of the filter assembly 25 to be discharged out of the washing machine 100 through the discharge line 18 of the washing machine 100. According to the embodiment of the invention, the water produced by the filter assembly 25 is pumped by the water pump 28, and meanwhile, the air flow is utilized to enter the filter assembly 25 to perform air washing on the filter assembly, so that the circulating purification of the washing water is guaranteed, meanwhile, the problem that the filter assembly 25 is blocked due to the deposition of impurities and the like on the surface of the filter membrane is solved, the running stability and the service life of the filter assembly 25 are improved, the cost is reduced, and the method has positive significance in maintaining the running of the washing machine 100 and prolonging the service life.
In the embodiment of the present invention, the air flow supply device 32 may perform further air washing after the end of the water production of the filter assembly 25, in addition to pressurizing the inside of the fine filter 26 in the back flushing stage of the pre-filter 24 and air washing the fine filter 26 in the circulating water filtering stage.
In particular, the circulating water filtration system may further include a filtration system control circuit board 42, the filtration system control circuit board 42 controlling, for example, the opening and closing of the valves in the circulating water filtration system; and/or control the opening and closing of the airflow supply device 32; and/or control the on and off of the suction pump 28; and/or controlling the opening and closing of the water pumping means. The filter system control circuit board 42 is electrically connected to a main control circuit board (not shown) of the washing machine 100. In particular, the filter system control circuit board 42 may be mounted outside the backplate 52 of the washing machine 100. Those skilled in the art will appreciate that the filter system control circuit board 42 may be mounted on the outside of the back plate 52 of the washing machine 100 alone or in combination with other components of the circulating water filter system.
In the preferred embodiment shown in fig. 2, the circulating water filtration system of the washing machine 100 has a filtration assembly 25, a water pump 28, an air flow supply device 32, and a filtration system control circuit board 42, and the filtration assembly 25, the water pump 28, the air flow supply device 32, and the filtration system control circuit board 42 are all installed outside the back plate 52 of the washing machine 100. In this way, the washing machine 100 having the circulating water filtering system can be manufactured by fully utilizing the mold, the assembling process, etc. in the original production line of the washing machine 100, so that the manufacturing cost is greatly reduced. In addition, by arranging the circulating water filtration system outside the washing machine back plate 52, the circulating water filtration system of the washing machine 100 of the invention is more compact in structure, and the circulating water filtration system of the washing machine 100 of the invention is more convenient and firm to install and detach, so that the circulating water filtration system can operate more reliably during the whole service life of the washing machine 100.
In particular, the washing machine 100 of the embodiment of the present invention may further include a mounting plate 62 detachably fixed to the outside of the back plate 52 of the washing machine 100. The components of the circulating water filtration system are mounted outside the backplate 52 of the washing machine 100 by being detachably fixed to the mounting plate 62. Specifically, the mounting plate 62 may be secured to the back plate 52 using bolts or screws through the fixing bolt holes designed in the back plate 52, and the components of the circulating water filtration system may be secured to the mounting plate 62 using bolts or screws through the fixing bolt holes designed in the mounting plate 62. The mounting plate 62 may be, for example, a steel plate to ensure that it has sufficient strength to mount the circulating water filtration system; and meanwhile, the installation/disassembly of the circulating water filtering system is more convenient.
The center of the mounting plate 62 and the back plate 52 are provided with access holes 622. The access hole 622 facilitates the observation of the inside of the casing 80 from the outside of the casing 80, thereby facilitating the maintenance, reducing the material consumption of the back plate 52 and the mounting plate 62 of the washing machine, and reducing the manufacturing cost. In addition, the water production line 19 of the filter assembly 25 may extend into the interior of the washing machine housing 80 via the access port 622 to communicate with the wash bowl 12. In some embodiments, access opening 622 may be greater than 15cm in diameter, preferably greater than 20cm.
In a further embodiment, a vibration pad (not shown) is provided between the mounting plate 62 and the backplate 52 of the washing machine 100. The vibration-proof pad may be, for example, a rubber vibration-proof pad, a silica gel vibration-proof pad, a foam vibration-proof pad, or a bubble pad, etc., to absorb vibrations generated when the suction pump 28 and the airflow supply device 32 are operated, and to reduce noise generated by vibrations of the suction pump 28 and the airflow supply device 32.
Fig. 3 is a schematic structural view of the washing machine of fig. 2 after the casing is mounted. Referring to fig. 3, in a further embodiment, the washing machine 100 of the embodiment of the present invention may further include a housing 72 installed outside the back plate 52 of the washing machine 100 to shield components of the circulating water filtering system installed outside the back plate 52 inside the housing 72. Thus, the circulating water filtering system can be arranged in a space basically independent of the inside of the shell 80, and the running is safer and more reliable; meanwhile, the housing of the washing machine 100 may be more beautiful. The cover 72 may be made of transparent or translucent plastic or resin. The housing 72 may also be mounted to the washer backplate 52 by bolts or screws or the like.
In a further embodiment, referring to fig. 1, the washing machine 100 may further include a water pumping device disposed on a line between the drain opening of the wash tub 12 and the water inlet 242 of the filter assembly 25. The water pumping means may be provided inside the casing 80 of the washing machine 100. In particular, the water pumping device may be configured to: operating in a first pumping mode having a first head during the circulating water filtration stage to deliver water from the wash bowl 12 to the filter assembly 25, and to keep the water level in the filter assembly 25 no higher than the lower edge of the concentrate discharge 262 of the fine filter 26 in the filter assembly 25; the filter assembly washing stage of the washing machine 100 is operated in a second pumping mode with a second lift, wherein the second lift is greater than the first lift, so as to pump water in the washing drum 12 into the filter assembly 25 for washing, and the washed water is discharged from the discharge pipeline 18 of the washing machine 100 to the outside of the washing machine 100 through the concentrated discharge port 262 of the fine filter 26. The washing machine 100 according to the embodiment of the present invention uses different lifts of the water pumping device to realize functions of different working stages of the washing machine 100, and uses the low-lift water pump to make the water level of the water in the filter assembly 25 not higher than the lower edge of the thick drain 262 of the filter assembly 25 in the circulating water filtering stage, so that the water from the washing drum 12 is not drained from the thick drain of the filter assembly 25, and the total water amount of the washing drum 12 is ensured to be kept substantially unchanged during the water filtering period.
In some embodiments of the present invention, referring to fig. 1, the water pumping device may be formed by connecting a first water pump 22 with the first lift and a second water pump 23 with the second lift in parallel, that is, the first water pump 22 and the second water pump 23 are respectively disposed on two different pipelines between the water outlet of the washing drum 12 and the water inlet 242 of the filtering assembly 25, and a first valve 14 and a second valve 15 are respectively disposed on the pipelines where the first water pump 22 and the second water pump 23 are respectively disposed, so as to respectively control the on-off of the two pipelines. When the water in the washing tub 12 is discharged out of the washing tub 12, one of the first water pump 22 and the second water pump 23 is controllably activated to pump water. In the embodiment of the present invention, the first water pump 22 and the second water pump 23 do not operate simultaneously when the water in the wash tub 12 is discharged out of the wash tub 12. That is, if the first water pump 22 is operated, the second water pump 23 is not operated; if the second water pump 23 is operated, the first water pump 22 is not operated.
For example, in some embodiments of the invention, during the circulating water filtration phase, the first valve 14 and the first water pump 22 are opened (the second valve 15 and the second water pump 23 are closed), the water in the washing drum 12 is pumped into the filter assembly 25, and the water level in the filter assembly 25 is not higher than the lower edge of the concentrated drain 262; in the filter assembly flushing stage, the second valve 15 and the second water pump 23 are opened (the first valve 14 and the first water pump 22 are closed), the water in the washing drum 12 is pumped into the filter assembly 25 to be flushed, and the flushed water is discharged to the outside of the washing machine 100 from the outer discharge pipeline 18 of the washing machine 100 through the concentrated discharge port of the filter assembly 25; in the draining stage of the washing machine 100, the second water pump 23 is turned on to pump the water in the washing tub 12 directly to the drain pipe 18 of the washing machine 100 to be discharged to the outside of the washing machine 100.
In other embodiments of the present invention, the water pumping device may be a dual-motor water pump, which includes a first motor with a rated rotational speed of a first rotational speed and a second motor with a rated rotational speed of a second rotational speed, wherein the second rotational speed is greater than the first rotational speed, and when the first motor is operated, a lift of the dual-motor water pump is the first lift, and when the second motor is operated, a lift of the dual-motor water pump is the second lift. In an alternative embodiment of the invention, the water pumping device may be a motor speed adjustable water pump, the motor of which is configured to provide the water pumping device with said first lift when operating at a first speed and with said second lift when operating at a second speed, wherein said second speed is greater than said first speed.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (12)
1. A washing machine, comprising:
a circulating water filtration system configured to filter water discharged from a wash tub of the washing machine during a circulating water filtration stage of the washing machine for recycling back into the wash tub for reuse, wherein
At least one component of the circulating water filtration system is installed outside a back plate of the washing machine;
the circulating water filtration system includes:
a filtering assembly configured to filter water discharged from a washing tub of the washing machine at the circulating water filtering stage; the filter assembly comprises a pre-filter and a fine filter which are fixed together along the vertical direction, the lower end of the pre-filter is provided with a water inlet which is controllably communicated with the washing cylinder, water in the washing cylinder flows to the fine filter vertically above the pre-filter through the water inlet of the pre-filter in the circulating water filtering stage, the pre-filter can be divided into an upper chamber and a lower chamber by a filter screen in the pre-filter, the chamber positioned below is used as a water inlet chamber of the pre-filter, the chamber positioned above is used as a water outlet chamber of the pre-filter, the water inlet of the pre-filter is communicated with the water inlet chamber of the pre-filter, and the water inlet of the fine filter is communicated with the water outlet chamber of the pre-filter; and the fine filter is configured to controllably reverse drain the residual water therein into the pre-filter to reverse flush the pre-filter.
2. The washing machine as claimed in claim 1, wherein
The circulating water filtration system further includes:
an air flow supply configured to provide an air flow to air-wash the filter assembly; and
a filtration system control circuit board configured to control at least the air flow supply device; wherein the method comprises the steps of
The at least one component includes one or more of the filter assembly, an airflow supply, and a control circuit board.
3. The washing machine as claimed in claim 2, wherein
The at least one component includes a filter assembly, an airflow supply device, and a control circuit board.
4. The washing machine as claimed in claim 2, wherein
The circulating water filtration system further includes:
a water pump disposed on the water production line of the filter assembly, the water pump being configured to pump the produced water of the filter assembly into the water production line during the circulating water filtration stage to return to the washing drum of the washing machine for reuse, and
the air flow supply device is further configured to provide air flow to air wash the filter assembly during the circulating water filtration stage,
the at least one component further comprises the suction pump.
5. The washing machine as claimed in claim 1, further comprising:
and a mounting plate detachably fixed to an outside of the back plate of the washing machine, the at least one component being mounted to the outside of the back plate of the washing machine by being detachably fixed to the mounting plate.
6. The washing machine as claimed in claim 5, wherein
And a vibration-proof pad is arranged between the mounting plate and the back plate of the washing machine.
7. The washing machine as claimed in claim 5, wherein
And the center of the mounting plate and the center of the backboard are provided with access holes.
8. The washing machine as claimed in claim 5, further comprising:
and a cover installed outside a back plate of the washing machine to shield the at least one component installed outside the back plate inside the cover.
9. The washing machine as claimed in claim 2, wherein
The lower end of the pre-filter is also provided with an air inlet which is controllably communicated with the water outlet cavity of the pre-filter so as to receive the air flow provided by the air flow supply device, and the air flow flows into the fine filter through the outlet of the water outlet cavity of the pre-filter to perform air washing on the filter assembly.
10. The washing machine as claimed in claim 9, wherein
The water inlet of the pre-filter is also controllably communicated with the discharge pipeline of the washing machine, so that the water for back flushing the pre-filter flows to the discharge pipeline through the water inlet.
11. The washing machine as claimed in claim 9, wherein
The cross sections of the pre-filter and the fine filter are elliptical or rectangular.
12. The washing machine as claimed in claim 9, further comprising:
a water pumping device configured to:
operating in a first pumping mode with a first lift in the circulating water filtering stage so as to convey water in the washing cylinder into the filtering component, wherein the water level in the filtering component is not higher than the lower edge of a concentrated discharge port of a fine filter in the filtering component;
and the second pump water mode with a second lift is operated in a washing stage of the filter assembly of the washing machine, wherein the second lift is larger than the first lift so as to pump water in the washing cylinder into the filter assembly to wash the filter assembly, and the washed water is discharged to the outside of the washing machine from an outer discharge pipeline of the washing machine through a concentrated discharge port of the fine filter.
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| CN201510053663.4A CN105986428B (en) | 2015-02-02 | 2015-02-02 | washing machine |
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| CN201510053663.4A CN105986428B (en) | 2015-02-02 | 2015-02-02 | washing machine |
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| CN105986428B true CN105986428B (en) | 2023-12-26 |
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Address after: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant before: QINGDAO HAIER JOINT STOCK Co.,Ltd. |
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