KR20120118196A - Filter cleaning method for laundry machine - Google Patents

Abstract

PURPOSE: A Lint filter cleaning method of a laundry device is provided to easily clean a lint filter filtering lint included in hot air by supplying a cleaning method for the maintenance of the lint filter. CONSTITUTION: Washing water is intermittently supplied by the control of a washing water valve. The washing water is consecutively supplied by the control of the washing water valve. When the washing water is intermittently supplied, the washing water is intermittently sprayed at an interval of 1 to 2 seconds. When the washing water is consecutively supplied, the washing water is consecutively sprayed for 3 to 5 seconds. [Reference numerals] (AA) Washing water; (BB) Rinsing water; (CC) First stroke

Description

FILTER CLEANING METHOD FOR LAUNDRY MACHINE

The present invention relates to a method for cleaning a lint filter of a laundry machine, and more particularly, to a method for cleaning a lint filter of a laundry machine to clean the lint filter even at a low water supply pressure.

In general, the washing machine is a product that removes various contaminants attached to clothes and bedding by using the action of the emulsification and friction of the water flow due to the rotation of the pulsator or drum and the impact on the laundry. Recently appeared automatic washing machine automatically proceeds a series of steps leading to a washing course, rinsing course, dehydration course, etc. without the user's operation in the middle.

In addition, the combined dry laundry device is a kind of washing machine that can perform the function of the above-described laundry machine and at the same time wash and dry the laundry. The combined dry laundry apparatus includes a condensation type laundry dryer which draws air from the tub, removes moisture from the air by condensation water, and then heats the same to the tub.

This will be briefly described a condensation type dry combined laundry device according to the prior art. Drying and combined laundry apparatus can condense a cabinet forming an accommodation space therein, a tub accommodated inside the cabinet, a drum rotatably installed in the tub, and air containing moisture extracted from the tub. A condensation duct formed on the outside of the tub, a heating duct connected to the downstream side of the condensation duct along the flow direction of the air to heat the air, and to be provided to the inside of the tub; It is provided with a circulation fan for circulation.

Drying combined laundry as described above is heated by a heater provided in the heating duct, the air moved to the blower when the laundry is dried, the heated air (hot air) is supplied to the inside of the curve laundry by drum rotation and hot air To dry.

Thereafter, the hot air drying the laundry is converted into humid air according to the drying of the laundry, flows into the condensation duct from the tub, removes moisture from the condensation duct, and is supplied and circulated to the heating duct again by the blower.

In this process, the lint included in the laundry during drying of the laundry may be introduced through the condensation duct together with the hot air and remain in the condensation duct, the blower, and the heating duct. The lint remaining in the condensing duct may reduce the efficiency of the condensing duct, and the lint remaining in the blower may cause the blower to fail, and the lint remaining in the heating duct may cause the heater of the heating duct to fail or fire There is a problem.

Therefore, a lint filter for filtering the lint included in the hot air flowing into the condensation duct is necessary, and the maintenance of the lint filter is also an important problem.

The present invention has been made to solve the problems described above, and an object thereof is to provide a method for cleaning a lint filter of a laundry machine by maintaining the lint filter for filtering the lint included in the hot air.

In addition, the present invention has been made to solve the problems described above, when the water supply pressure supplied to the washing machine is less than the set pressure to clean the lint filter of the washing machine to perform the cleaning of the lint filter smoothly The purpose is to provide.

A washing method for washing a lint filter of a washing apparatus according to an embodiment of the present invention for achieving the above object is a washing water line for supplying the washing water, a washing water valve for opening and closing the washing water line, and a filter for cleaning by spraying the washing water on the lint filter. The lint filter washing method of a washing apparatus including a washing unit includes a liver blood supply step in which the wash water is supplied interstitially by the control of the wash water valve, and a continuous supply step in which the wash water is continuously supplied by the control of the wash water valve. It is preferable to include.

The hepatic blood supplying step is preferably spraying the wash water interstitially for 1 to 2 seconds at intervals between 1 to 2 seconds of the wash water.

In the continuous supply step, it is preferable to spray the washing water continuously for 3 to 5 seconds.

If the hepatic blood supply step and the continuous supply step is made of one washing stroke, the washing stroke is preferably performed repeatedly.

The washing stroke is preferably performed before the rinsing stroke of the washing machine.

The supply of the washing water for the washing stroke is preferably supplied separately from the supply of the rinsing water for the rinsing stroke.

The washing stroke is preferably performed before the drying stroke of the washing machine.

The drying operation is a quantity detection step of detecting the quantity of the laundry; A preliminary drying step of supplying hot air while the laundry is fixed; A dry dehydration step of dehydrating the laundry; A hot air drying step of supplying hot air while flowing the laundry; And a cold air drying step of supplying cold air while flowing the laundry.

The washing stroke is preferably performed before the quantity detection step.

It is preferable that the liver blood supply step is further performed between the hot air drying step and the cold air drying step.

According to the method for cleaning a lint filter of a laundry machine according to the present invention, it is possible to easily clean the lint filter by providing a cleaning method for maintenance of the lint filter for filtering the lint included in the hot air.

In addition, according to the washing method of the lint filter of the washing machine according to the present invention, even if the water supply pressure supplied to the washing machine is smaller than the set pressure, the lint filter can be smoothly cleaned.

1 is an exploded perspective view showing a washing apparatus according to the present invention.
2 is a cross-sectional view showing the internal structure of the washing apparatus according to the present invention.
3 is a perspective view showing a drying module and a tub of the laundry machine according to the present invention.
Figure 4 is a perspective view of the suspension of the laundry machine according to the present invention.
Figure 5 is a side view showing a coupling state of the tub and suspension of the laundry machine according to the invention.
6 to 7 is a partial cross-sectional view showing a hot air recovery port and filter cleaning unit of the laundry machine according to an embodiment of the present invention.
8 is a graph illustrating a washing process during rinsing in the lint filter washing method of the laundry machine according to the present invention.
9 is a graph illustrating a washing process during drying in the lint filter washing method of the laundry machine according to the present invention.

Hereinafter, a washing machine according to an embodiment of the present invention will be described in detail. In describing the present invention, the names of the elements defined are defined in consideration of functions in the present invention. Therefore, it should not be understood as a meaning limiting the technical components of the present invention. In addition, each name defined in each component may be referred to as other names in the art.

First, with reference to the accompanying drawings will be described in detail a washing apparatus according to an embodiment of the present invention.

1 is an exploded perspective view showing a washing apparatus according to the present invention, Figure 2 is a cross-sectional view showing a washing apparatus according to the present invention, Figure 3 is a perspective view showing a drying module and a tub of the washing apparatus according to the present invention.

As shown in FIG. 1 and FIG. 2, the washing apparatus 100 according to the present invention includes a cabinet 110 having an external appearance as shown, a tub 120 fixedly installed inside the cabinet 110, and A drum 130 positioned inside the tub 120 and rotatably installed, a rotating shaft 135 connected to the drum 130 through the rear of the tub 120, and a bearing housing for supporting the rotating shaft 135 ( 140, the drive motor 141 provided in the bearing housing 140 to transmit the rotational force to the rotating shaft 135, and coupled to the bearing housing 140 to support the structures connected to the bearing housing 140, and at the same time vibrating and And / or a suspension unit 150 that cushions shocks. In addition, the washing apparatus 100 according to the present invention is provided with an air supply device 160 that is fixed to the outside of the tub 120 in order to form a drying function to heat the air into the tub 120 to supply. .

The cabinet 110 includes a base 118 on which each component is supported and seated, and a front panel 111 formed with an opening 112 for loading laundry. The cabinet 110 further includes a left panel 114 and a right panel 115. And a rear panel 116 and a top panel 117. Here, a door 113 for closing the opening 112 is provided in the opening 112 of the front panel 111.

In addition, the inside of the cabinet 110, the water supply hose to supply water from the external water source into the tub 120, the water supply hose is installed on the water supply hose to control the access of the water, and is supplied through the water supply hose A water supply unit 127 is formed of a detergent supply device (not shown) in which detergent is injected so that water is introduced into the tub 120 together with the detergent. In addition, a drainage part (not shown) formed of a drain hose and a drain pump is provided at an inner lower portion of the cabinet 110 to discharge the wash water used for washing and rinsing to the outside.

The tub 120 includes a front tub 121 constituting the front part and a rear tub 122 constituting the rear part as shown in FIG. 3. The front tub 121 and the rear tub 122 are assembled by a combination of screws and the like, and form a space in which the drum 130 is accommodated.

Here, the front tub 121 is in contact with the door 113 to the front side is formed with an opening 123 is opened so that laundry can be put. The inner circumferential surface of the inlet 121a is formed with a rim portion 121b protruding forward of the tub 120. The air outlet 165 of the air supply device 160 to be described later is connected to the rim portion 121b. On the other hand, the rim 121b is provided with a front gasket 124 for maintaining airtightness with the opening 112 formed in the front panel 111. The front gasket 124 further performs a function for preventing foreign matter from flowing between the tub 120 and the drum 130.

And, the rear tub 122 is formed so that the rear surface. The rear tub 122 has a tubback wall 125 and a rear gasket 126 for closing the rear surface. The rear gasket 126 is connected to seal the tub back wall 125 and the rear tub 122, respectively, so that the wash water in the tub does not leak.

In addition, one side of the outer circumferential surface of the rear tub 120 is formed with a condensate supply port 122a for generating condensed water using the inner circumferential surface of the rear tub 120. The inner circumferential surface of the rear tub 120 serves as a condensation surface (not shown) by cold water supplied to the condensed water supply port 122a. Condensed water generation using the rear tub 120 will be described in detail in the description of the air supply device 160.

Here, the tub back wall 125 is vibrated with the drum 130 when the drum 130 rotates. At this time, the rear tub 122 is spaced apart from the rear tub 122 at a sufficient interval so as not to interfere with the rear tub 122. Since the rear gasket 126 is made of a flexible material positioned between the tub back wall 125 and the rear tub 122, the tub back wall 125 allows relative movement without interfering with the rear tub 122. The rear gasket 126 may have a pleat that may extend to a sufficient length to allow such relative movement of the tubback wall 125 (see FIG. 2).

Meanwhile, the tub 120 is vertically supported by the supporters 118a and 118b provided in the base 118 of the cabinet 110 and is fixed by a separate combination (for example, screw screw or bolt). . In addition, the front panel 111 and the rear panel 116 or the left panel 114 of the cabinet 110 may be fixed by a combination not shown in the right panel 115.

The air supply device 160 is provided on the top of the tub 120 and circulates and heats the air inside the tub 120 during the drying operation of the washing apparatus 100. That is, the air supply device 160 is configured to draw out the air in the tub 120 and heat it to flow back into the tub 120.

The air supply device 160 is an air recovery port 161 formed on the outer peripheral surface side of the tub 120, a blowing fan 163 for recovering and moving the air through the air recovery port 161, a blowing fan ( The heating duct 164 for heating the air moved by the 163, and the air discharge port 165 for guiding the air heated in the heating duct 164 to the tub 120.

Here, the air recovery port 161 is formed through the outer peripheral surface side of the tub 120. In addition, a lint filter 162 is provided on the inner surface of the air recovery port 161 to filter lint generated when the laundry is dried along the outer circumferential surface of the tub 120. Inside the air recovery port 161 is provided with a filter washing unit 170 to be described later (see Figures 6 to 7).

On the other hand, the condensed water supply port 122a is located at one side of the air recovery port 161. As the cold water is supplied to the condensed water supply port 122a during the drying process of the washing apparatus 100, the cold water supplied flows along the inner surface of the tub. At the same time, the condensed water is formed on the condensation surface of the tub 120 in which cold water flows while the wet air drying the laundry is moved to the air recovery port 161. The condensate generation using the inner surface of the tub 120 may generate condensate using a larger area than the condensate generating structure using a conventional condensation duct, thereby improving condensate generating efficiency.

The blower fan 163 is provided above the air recovery port 161. According to the operation of the blower fan 163, air inside the tub 120 is introduced and moved to the heating duct 164. On the other hand, the heating duct 164 heats the air moved by the blowing fan 163 to generate hot air. Air heated in the heating duct 164 is supplied into the tub 120 by the air discharge port 165 to dry the laundry.

On the other hand, the lint filter 162 for filtering the lint contained in the air flowing into the air recovery port 161 in the air supply device 160 as described above requires maintenance to remove the filtered lint during long-term use.

To this end, a filter washing unit 170 is provided at the inside of the air recovery port 161 to spray the washing water toward the lint filter 162 to remove the filtered lint from the lint filter 162. The filter washing unit 170 will be described in detail after the configuration of the washing apparatus.

The remaining configuration of the washing apparatus will be described with reference to FIGS. 1 and 2 again.

The drum 130 is composed of a front drum 131, a center drum 137, a rear drum 132, and the like. The front and rear parts of the front drum 131 and the rear drum 132 are provided with a weight balancer 134 having a balancing function to suppress vibration of the drum 130 when the drum rotates. In addition, the inner surface of the center drum 137 is provided with a lift 133 for moving the laundry.

On the other hand, the rear drum 132 is connected to the spider 136, the spider 136 is connected to the rotating shaft 135. The drum 130 is rotated in the tub 120 by the rotational force transmitted through the rotating shaft 135.

Here, the rotating shaft 135 is directly connected to the drive motor 141 through the tub back wall 125. Specifically, the rotor of the drive motor 141 and the rotation shaft 135 are directly connected. The rear of the tub back wall 125 is coupled to the bearing housing 140 to be described later.

The bearing housing 140 rotatably supports the rotating shaft 135 between the drive motor 141 and the tub back wall 125. In addition, the bearing housing 140 is elastically supported from the base 118 through the suspension unit 150.

On the other hand, one surface of the bearing housing 140 is coupled to the tub back wall 125 located on the rear of the tub 120. The rotating shaft 135 coupled to the drum 130 penetrates into the bearing housing 140. The bearing housing 140 is provided with a bearing (not shown) so that the rotating shaft 135 rotates smoothly, and the rotating shaft 135 is supported by a bearing (not shown). Then, the other side of the bearing housing 140 is fastened to the drive motor 141 for rotating the rotating shaft.

In addition, the first extension part 142 and the second extension part 144 are formed in a symmetrical shape in both the left and right radial directions of the bearing housing 140. The suspension unit 150 is fastened to the first extension part 142 and the second extension part 144, respectively, and the bearing housing 140 is elastically supported through the suspension unit 150.

Hereinafter, with reference to the accompanying drawings, the coupling state of the suspension unit according to the present invention will be described in detail.

Figure 4 is a perspective view showing a suspension of the washing apparatus according to the present invention, Figure 5 is a side view showing a coupling state of the tub and suspension of the washing apparatus according to the present invention.

The suspension unit 150 includes first and second weights 143 and 145 connected to the first and second extension parts 142 and 144 of the bearing housing, and first and second weights 143 and 145 respectively. First, second and third spring dampers connected to the first and second suspension brackets 151 and 154 and the first and second suspension brackets 151 and 154 and the bearing housing 140 to elastically support the bearing housing 140. 152, 155, and 157 and first and second dampers 153 and 156 are provided.

The first and second weights 143 and 145 serve to grasp the center of gravity when laundry is accommodated in the drum 130, and also serves as a mass in the vibration system in which the drum 130 vibrates.

The first spring damper 152 is connected between the first suspension bracket 151 and the base 118. The second spring damper 155 is connected between the second suspension bracket 154 and the base 118. The third spring damper 157 is directly connected between the bearing housing 140 and the base 118. Each spring damper (152, 155, 157) is in the form of being buffered at one location in the rear, and two places in the front left and right.

The first damper 153 is inclined between the first suspension bracket 151 and the base 118, and the second damper 156 is inclined between the second suspension bracket 154 and the base rear. .

Preferably, the first and second weights 143 and 145, the first and second suspension brackets 151 and 154, the first and second spring dampers 152 and 155 and the first and second dampers 153 and 156 are drums. Is formed symmetrically around the axis of rotation of 130, each damper is connected to the base 118 via a separate rubber bushing is coupled to be tilted at a predetermined angle. The drum 130 and the bearing housing 140 are supported in the tub 120 by the first and second suspension brackets 151 and 154 and the first, second and third spring dampers 152, 155 and 157. do.

The drive motor 141 is fastened to the rear of the bearing housing 140 and directly connected to the rotating shaft. The drive motor 141 is provided to control the speed by a controller (not shown). The structure and type of the driving motor 141 are well known to those skilled in the art, and various embodiments are possible, so detailed description thereof will be omitted.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the filter washing unit 170 of the washing apparatus 100 according to the present invention.

On the other hand, in the case of the washing apparatus 100, the water supply pressure supplied to the washing apparatus 100 varies greatly depending on the installation place. In general, the washing water supply pressure of the place where the washing apparatus 100 is installed may have a pressure of about 2.5-4 bar. In this case, the normal operation can be performed because the washing water supply pressure for washing and the washing water supply pressure for the filter pit are satisfied. However, when the installation position of the washing apparatus 100 has a water supply pressure of less than 1 bar without a normal water supply pressure, the water supply time for washing is very long, or the injection pressure for the filter cleaning is insufficient, so that the filter can not be washed smoothly. Losing problems occur.

Thus, the present invention can provide a filter washing unit 170 to smoothly perform the filter cleaning even in the water supply pressure of 0.3 ~ 1 bar range that the water supply pressure supplied to the washing apparatus 100 does not reach the normal pressure.

In the case of the filter washing unit 170 of the present invention is applied when the water supply pressure of the installation place of the washing machine 100 is a relatively low pressure (about 0.3 ~ 1bar). However, when the water supply pressure is normal pressure (about 2.5 ~ 4bar) or more, a pressure reducing valve (not shown) may be additionally used to lower the pressure.

6 to 7 is a partial cross-sectional view showing a hot air recovery port and the filter cleaning unit of the laundry machine according to the present invention.

6 is a partial cross-sectional view showing a hot air recovery port and filter cleaning unit according to an embodiment of the present invention, Figure 7 is a partial cross-sectional view showing a hot air recovery port and filter cleaning unit according to another embodiment of the present invention.

As shown in FIGS. 6 to 7, a lint filter for filtering lint generated when the hot air is supplied and circulated to dry the laundry in the air recovery port 161 provided on the outer circumferential surface of the tub 120 ( 162 and a filter washing unit 170 for cleaning the lint filter 162.

The filter washing unit 170 according to the embodiment of the present invention sprays the washing water having a predetermined pressure from the outside of the lint filter 162 to the inside of the tub 120 to filter the lint filtered on the lint filter 162. It is to throw.

The filter washing unit 170 is provided with a washing water line 172 for supplying the washing water. Here, the washing water line 172 may be provided to branch from the water supply unit 127 described above, and simultaneously supply the washing water according to the wash water supply of the water supply unit 127 to supply the washing water to the filter washing unit 170. Can be prepared. Alternatively, a separate wash water valve (not shown) may be provided to control the supply of the washing water separately from the washing water supply of the water supply unit 127 to supply the washing water separately from the water supply of the washing water. The washing water line 172 penetrates the side surface of the air collecting hole 161 formed in the tub 120, and an end portion thereof is positioned inside the air collecting hole 161.

As shown in FIG. 6, the filter washing unit 170 according to the exemplary embodiment of the present invention is sprayed by applying rotational force to the washing water line 172 and the washing water supplied from the washing water line 172 to supply the washing water. Diffusion nozzle 200 for spraying the washing water to the lint filter 162 by diffusing the washing water.

 Here, the diffusion nozzle 200 is fixed to the inside of the air recovery port 161 and connected to the washing water line 172 at the same time. Here, the diffusion nozzle 200 forms a predetermined rotational force in the washing water supplied from the washing water line 172 and sprays the lint filter 162. Since the internal structure of the diffusion nozzle 200 can be various implementations, detailed description thereof will be omitted.

As shown in FIG. 7, the filter washing unit according to another embodiment of the present invention provides a washing water line 172 for supplying the washing water, and spreads the washing water sprayed by applying rotational force to the washing water supplied from the washing water line 172. Dispensing nozzle 300 for spraying the washing water to the lint filter 162 is provided.

The distribution nozzle 300 is fixed to the inside of the air recovery port 161 and at the same time the fastening portion 312 to which the washing water line 172 is connected, and a plurality of nozzles coupled to the fastening portion 212 and spraying the washing water are fixed. The distribution unit 330 is disposed to be formed. Here, the distribution unit 330 and the fastening portion 312 is formed in communication with the hollow (not shown).

 Here, the distribution nozzle 300 is fixed to the inside of the air recovery port 161 and connected to the washing water line 172 at the same time. Here, the distribution nozzle 300 sprays the washing water supplied from the washing water line 172 to the lint filter 162 through a plurality of nozzles. Since the internal structure of the distribution nozzle 300 can be variously implemented, a detailed description thereof will be omitted.

On the other hand, the filter cleaning unit 170 as described above will be possible in various embodiments. In the following description, the diffusion nozzle 200, the distribution nozzle 300, and the like will be collectively described as the filter washing unit 170.

Hereinafter, the washing process of the lint filter 162 through the filter washing unit 170 of the laundry apparatus 100 according to the present invention will be described in detail with reference to the accompanying drawings. On the other hand, the present invention relates to the cleaning process of the lint filter 162. The detailed description of the washing, rinsing, and drying process of the laundry apparatus 100 will be omitted.

8 is a graph illustrating a washing process during rinsing in the lint filter washing method of the washing apparatus 100 according to the present invention, and FIG. 9 is a graph illustrating a washing process during drying in the lint filter washing method of the washing apparatus according to the present invention. .

Hereinafter, a lint filter cleaning method according to an embodiment of the present invention will be described with reference to FIG. 8. The lint filter cleaning method according to an embodiment of the present invention is carried out when rinsing laundry.

Specifically, the lint caught on the lint filter 162 may be removed before rinsing the laundry. This is because the lint separated from the lint filter 162 may be drained together with the rinsing water supplied for rinsing when the lint filter 162 is cleaned.

Meanwhile, a washing water valve (not shown) is opened and supplied to the filter washing unit 170 to clean the lint filter 162 before the rinsing process starts. At this time, the washing water supplied to the filter washing unit 170 is supplied intermittently by a washing water valve, and is continuously supplied for a predetermined time.

Here, the reason why the washing water is supplied interstitially is because when the pressure of the supplied washing water is relatively low pressure (about 0.3 to 1 bar), when the washing water is intermittently supplied, the jet pressure of the washing water is temporarily higher than when continuously supplied. to be.

That is, the washing water supplied from the filter washing unit 170 is supplied as the supply of the washing water manufactured by the washing water valve is temporarily increased by the shielding of the washing water valve and the washing water with the increased pressure is supplied interstitially. It can be ejected at a pressure slightly higher than the pressure that becomes.

On the other hand, the washing water supplied to the filter washing unit 170 as described above may be supplied interstitially at intervals of about 1 second. That is, the washing water valve is opened to supply the washing water for one second, and closed to stop the feeding of the washing water for one second. Repeat this process four or five times. The process in which the wash water is supplied interstitially is called 'hepatic blood supply'.

Thereafter, after the liver blood supply of the washing water proceeds as described above, the washing water valve is opened for a predetermined time to continuously supply the washing water. At this time, the washing water is continuously supplied for about 3 to 5 seconds. Here, the process of continuously supplying the washing water is called 'continuous supply'.

As described above, the hepatic blood supply is intended to impart fluidity by impacting lints fixed to the lint filter 162, and the continuous supply is to separate the lint having fluidity from the lint filter 162.

 On the other hand, the liver blood supply and continuous supply as described above is proceeded sequentially and the liver blood supply and continuous supply is defined as 'washing administration' once each.

Accordingly, a plurality of washing administrations are performed before the rinsing process of the laundry is started. After the washing stroke is completed, the rinsing water is supplied by rinsing the laundry. Here, the washing process performed before the rinsing process is performed about 2-3 times, preferably 2 times.

The washing stroke described above does not proceed at the same time as the supply of the rinsing water. That is, when the supply pressure of the washing water is lower than the general pressure, the pressure of the washing water supplied may be lowered when the supply of the rinsing water and the supply of the washing water are simultaneously performed. On the other hand, the amount of rinsing water supplied during the rinsing process is supplied in an amount excluding the amount of the washing water supplied for the filter cleaning.

Hereinafter, a lint filter cleaning method according to another embodiment of the present invention will be described with reference to FIG. 9. The lint filter washing method according to another embodiment of the present invention is carried out when the laundry is dried.

As shown in FIG. 9, as the drying operation starts, the drum 130 is rotated to perform 'capacity detection' for detecting the amount of laundry loaded on the drum 130. Then, when the amount of laundry is detected, the blower fan 163 and the heating heater of the air supply device 160 are sequentially operated to perform 'pre-drying' to preheat the laundry loaded on the drum 130 for a predetermined time.

Thereafter, when the preliminary drying of the laundry is completed, the driving motor 141 is driven to perform 'dry dehydration' while rotating the drum 130. Then, when the dry dehydration is completed, the blowing fan 163, the heating heater and the driving motor 141 is operated to perform 'hot air drying'. After the hot air drying is completed, the operation of the heating heater is stopped, and the cooling fan is heated while rotating the blowing fan 163 and the drum 130 while cooling the heated laundry during the hot air drying to perform 'cold air drying'.

On the other hand, the cleaning process for cleaning the lint filtered in the lint filter 162 before and during the above-described drying process is performed. Specifically, during the drying process, a first washing process for washing the lint filter 162 before the detection of the quantity of storage, and a second washing process for washing the lint filter 162 between the hot air drying and the cold air drying after the hot air drying is completed are performed. To perform.

In more detail, the first washing process is to remove the lint filtered by the lint filter 162 so as to smoothly circulate the air during the drying process. In the first washing process, the washing water valve (not shown) is first opened to the filter washing unit 170. At this time, the washing water supplied to the filter washing unit 170 is supplied intermittently by a washing water valve, and is continuously supplied for a predetermined time.

Here, the reason why the washing water is supplied interstitially is because when the pressure of the supplied washing water is relatively low pressure (about 0.3 to 1 bar), when the washing water is intermittently supplied, the jet pressure of the washing water is temporarily higher than when continuously supplied. to be.

That is, as the supply of the washing water controlled by the washing water valve is temporarily increased by the shielding of the washing water valve, the washing water supplied from the filter washing unit 170 is supplied as the washing water with increased pressure is intermittently supplied. It can be ejected at a pressure slightly higher than the pressure that becomes.

On the other hand, the washing water supplied to the filter washing unit 170 as described above may be supplied interstitially at intervals of about 1 second. That is, the washing water valve is opened to supply the washing water for one second, and closed to stop the feeding of the washing water for one second. Repeat this process four or five times. The process in which the wash water is supplied interstitially is called 'hepatic blood supply'.

Thereafter, after the liver blood supply of the washing water proceeds as described above, the washing water valve is opened for a predetermined time to continuously supply the washing water. At this time, the washing water is continuously supplied for about 3 to 5 seconds. Here, the process of continuously supplying the washing water is called 'continuous supply'.

As described above, the hepatic blood supply is intended to impart fluidity by impacting lints fixed to the lint filter 162, and the continuous supply is to separate the lint having fluidity from the lint filter 162.

 On the other hand, the liver blood supply and continuous supply as described above is proceeded sequentially and the liver blood supply and continuous supply is defined as 'washing administration' once each.

Thus, the first washing process is performed before the drying process. Here, in the first washing process performed before the drying process, the washing administration described above is performed about two to three times, and preferably two times.

In addition, a second washing process in which the lint filter 162 is washed between the hot air drying and the cold air drying after the hot air drying is completed will be described. The second washing process is to prevent the lint filtered by the lint filter 162 from being fixed to the lint filter 162 during drying. On the other hand, since the filtered lint is not fixed to the lint filter 162 during the hot air drying, it is not necessary to perform a washing stroke consisting of a liver blood supply and a continuous supply of the washing water as in the first washing process. Only supplying the washing water is enough to separate the unfixed lint from the lint filter 162. The wash water supplied in the second washing process may be supplied to the liver blood supply. Preferably, however, it may be supplied once per second for a number of times less than hepatic blood supply.

According to the cleaning method of the lint filter of the present invention as described above, the lint adhered to the lint filter can be easily removed even at a low water supply pressure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, The present invention may be modified in various ways. Therefore, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

110: cabinet 120: tub
130: drum 140: bearing housing
150: suspension unit 160: air supply device
170: filter washing unit 200: diffusion nozzle
300: distribution nozzle

Claims (10)

A washing method for washing a lint filter of a washing machine including a washing water line for supplying washing water, a washing water valve for opening and closing the washing water line, and a filter washing unit for spraying and cleaning the washing water on the lint filter,
A liver blood supply step in which the washing water is supplied interstitially by the control of the washing water valve;
And a continuous supply step of continuously supplying the washing water by the control of the washing water valve. According to claim 1, wherein the hepatic blood supply step
Lint filter washing method characterized in that the washing water interspersed for 1 to 2 seconds at intervals between 1 to 2 seconds. The method of claim 1, wherein the continuous supply step
Lint filter cleaning method, characterized in that for continuously spraying the washing water for 3 to 5 seconds. The method of claim 1, wherein when the hepatic blood supplying step and the continuous supplying step are performed in one washing stroke, the washing stroke is repeatedly performed. The method of claim 4, wherein the washing stroke is performed before the rinsing stroke of the washing apparatus. 6. The method of claim 5, wherein the supply of the wash water for the washing stroke is supplied separately from the supply of the rinsing water for the rinsing stroke. The method according to claim 4, wherein the washing stroke is performed before the drying stroke of the washing apparatus. The method of claim 7, wherein the drying administration
A quantity detection step of sensing the quantity of the laundry;
A preliminary drying step of supplying hot air while the laundry is fixed;
A dry dehydration step of dehydrating the laundry;
A hot air drying step of supplying hot air while flowing the laundry; And
Lint filter washing method comprising the cold air drying step of supplying cold air while flowing the laundry. 10. The method of claim 8, wherein the washing operation is performed before the quantity sensing step. 10. The method of claim 8, wherein the liver blood supply step is further performed between the hot air drying step and the cold air drying step.

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