KR970003074B1 - Single-tub washing machine - Google Patents

Abstract

None.

Description

Single bucket washer

1 is a cross-sectional view showing the structure of a conventional single barrel washing machine.

2 is a cross-sectional view showing an example of a conventional automatic washing machine structure including a filter unit.

3 is a cross-sectional view showing an example of a conventional single barrel washing machine structure including a filter unit.

4 is a layout plan view showing an example of a control panel in the washing machine of the present invention.

5 is a block diagram showing an example of a control unit in the washing machine of the present invention.

6 is a flow chart where drainage begins and an abnormality is detected to display an error.

7 is a flowchart in which drainage is started, an abnormality is detected to perform a corrective action, and an error is displayed when no abnormality is detected.

8 is a cross-sectional view showing the structure of one embodiment of a washing machine of the present invention.

9 is a perspective view showing an example of a lint filter used in the present invention.

* Explanation of symbols for main parts of the drawings

141: outer cylinder 142: dehydration container

143: support rod 144: spring

145: washing / dehydration container 145a: dehydration hole

146 pulsator 146a: wing feather

147: water level sensor 148: pipe

149: control unit 150: drainage

151 drive motor 153 belt

154: drain valve 155: drain hose

156: Air Trap

FIELD OF THE INVENTION The present invention relates to a single tub washing machine, and in particular, to a fully automatic single tub dehydrator and a washing machine, which is suitable for eliminating malfunctions during dehydration, comprising a microcomputer. The invention also relates to a novel filter unit for a fully automatic single barrel dehydrator and washing machine.

Fully automatic dehydrators and washing machines are generally configured to carry out a water supply process, a rinsing process and a dewatering process continuously. Initially, water is drained before performing dehydration during the rinsing and dehydrating processes. For example, these processes are described in Japanese Patent Laid-Open No. 59-44299. In conventional control, the operation proceeds to a draining process that starts draining. The water level sensor then detects the selected "reset water level" and the operation proceeds to the dehydration process after the predetermined time (eg 30 seconds) has elapsed. 1 is a cross-sectional view showing the configuration of a single barrel washing machine as described above. The cylinder 142 for receiving the dewatered water is elastically supported by the spring 144 and the support rod 143 to the outer cylinder 141. The washing / dehydrating container 145 has a dehydration hole 145a only in the upper portion thereof, and is mounted to be rotatable in the container 142 containing the dehydrated water. The pulsator 146 is rotatably mounted in the lower middle of the laundry / dehydrator 145. Pulsator 146 has a laundry vane 146a on the side of the front surface and a pumping vane 146b on the side of the rear surface.

Reference numeral 154 denotes a drain valve. The drain valve 154 opens when water is drained from the washing / dehydrating container 145 through the drain hose 155 outside the washing machine. Reference numeral 147 denotes a water level sensor. The water level sensor 147 detects the pressure of the air trap 156 provided on the drainage path 150 (located above the drain valve 154) via the pipe 148. The water level sensor 147 supplies the detected signal to the control unit 149 so that the control unit 149 can control the drain valve 154. Reference numeral 151 denotes a drive motor. The driving motor 151 drives the washing / dehydrating container 145 and the pulsator 146 through the belt 153 and the mechanism part 152.

The operation of each part of the washing machine during dehydration will then be described. The drain valve 154 opens in response to a signal output from the control unit 149 during dehydration for draining the laundry out of the drain hose 155 through the drain passage 150. Next, the wash / dewater bottle 145 is rotated at high speed to generate centrifugal force to drain the laundry. The laundry water is drained through the dehydration hole 145a disposed in the upper part of the washing / dehydrating container 145 to the tub 142 containing the dewatered water, and drained out of the washing machine through the drain hose 155.

In the draining process as described above, wet laundry to be dehydrated, such as clothes, will stick to the drain hole 150a used as the inlet of the drainage path 150 when the drain valve 154 is opened to start dewatering. The drainage path 150 may be blocked. In this case, the water cannot flow through the drainage hole 150a to the drainage path 150, and only the air is in the drainage path 150. In addition, the pressure in the air trap 156 is reduced such that the water level sensor 147 erroneously detects the reset water level. As a result, in conventional control, the microcomputer controls the operation to advance the next process. In this case, the operation proceeds to a dehydration process, and the dewatering can 145 containing water begins to rotate. The dewatering container 145 cannot be rotated at high speed until the water is completely drained, and the dewatering efficiency can be greatly reduced.

When the wet laundry is disproportionately placed inside the dewatering container 145, the dewatering container 145 vibrates during dehydration (the dewatering container 145 is rotated at low speed) when the water is completely drained. . In addition, the imbalance detection switch is turned on to allow operation to proceed to the calibration process. If the water has not been completely drained from the dehydration pail 145, vibration will not occur when dehydration starts due to the water remaining between the wet laundry. Thus, vibration starts after the water is gradually drained, and the dehydrator is rotated at high speed. As a result, abnormal vibrations may occur. Therefore, in some cases, the dehydration process cannot be performed normally.

In general, automatic washing machines have a built-in filter unit for removing lint and dust attached to clothes to be washed with water. An example of a conventional washing machine incorporating a filter unit will be described with reference to each cross section.

Referring to FIG. 2, the washing machine includes a bucket 131 containing water. The washing machine includes a bucket 131 as shown in FIG. The washer while pumping water from the bucket 131 as shown in FIG. 2 by pumping vanes 132a mounted on the back of the pulsator 132 through many holes in the flange 133. The washing operation is performed by rotating 132. Water is drained to a lifting pipe 136 defined between the filter cover 135 and the inner keg 134 so that the lint can be collected through the lint filter 137.

In other words, since the single keg washer contains water only in the laundry / dehydration pail, it is necessary to rotate the water in the laundry / dehydration pail to collect lint. 3 illustrates an example of such collection means proposed in Japanese Utility Model Publication No. 55-50638. The flow path is defined by a filter 124 extending around the outside of the pulsator 123 and a channel 122 provided in the wash / dehydrator 121. Rotating laundry is pumped by pumping vanes 127 through holes 125 to collect lint by using brushed protrusions 126 mounted on filters 124 in the flow path.

However, in the prior art, in particular the latter single keg washing machine as described above has the drawback that relatively small lint cannot be collected due to the structure of the washing machine, and the holes 125 are arranged on top of the washing / dehydrating container 121. This has the drawback that the collection efficiency of lint is reduced when the water level is low (eg when a small amount of clothes are washed). In addition, the flow path defined by the extension of filter 124 extends only to the outer periphery of pulsator 123. Therefore, the flow of sucked water and the flow of water drained by the pumping vanes 127 of the pulsator 123 collide with each other to reduce the efficiency. As a result, conventional washing machines have the drawback of reducing the efficiency of lint collection.

The object of the present invention includes microcomputer control means for performing a corrective action or displaying an error to remove the blocking of the drainage hole when the drainage hole is blocked during the drainage process of the single keg dehydrator and the washing machine, and can avoid the malfunction, It is to provide a single barrel washing machine that can improve the dewatering efficiency.

It is another object of the present invention to provide a fully automatic single barrel dehydrator and washing machine incorporating a filter unit configured to improve the collection efficiency of lint and the like.

In order to achieve the above object, the single keg dehydrator and washing machine of the present invention is arranged below the washing / dehydrating pail, and includes a pulsator with a pumping vane on the back of the pulsator and the washing / dehydrating pail. A pail is included, the pulsator is driven during the washing process, and the washing / dehydrating pail is rotated during the dewatering process. The single keg dehydrator and washing machine also includes a washing / dehydrating pail with a perforated peripheral wall other than around the upper end of the washing / dehydrating pail, and having a drainage hole disposed at the bottom of the washing / dehydrating pail, Is closed against the dehydration reservoir to act as a drainage pipe during the drainage process. The single canister dehydrator and washing machine displays the error immediately, or corrects the position of the wet laundry inside the canister by driving the pulsator for a predetermined time, after which the wet laundry closes the drain hole during the draining process and resets the water level. It includes microcomputer control means for displaying an error if calibration is not possible when detected by the reduced pressure in this air trap.

Another single keg dehydrator and washing machine of the present invention is disposed below the washing / dehydrating pail, and includes a pulsator with a pumping vane on the back and a dehydration container including a washing / dehydrating pail, the pulsator being washed Driven during the process, the wash / dewater bottle is rotated during the dewatering process. The single keg dehydrator and washing machine also includes a washing / dehydrating pail with a perforated wall outside the periphery of the upper end of the washing / dehydrating pail, and having drainage holes arranged at the bottom of the washing / dehydrating pail, Is closed against the dehydration reservoir to act as a drainage pipe during the drainage process. The single canister dehydrator and washing machine displays the error immediately or corrects the position of the wet laundry inside the canister by driving the pulsator for a predetermined time, after which the wet laundry blocks the drain hole in the draining process and resets the water level. Microcomputer control means for displaying an error when correction is not possible when detected by the reduced pressure in this air trap, a drive extending from the side of the part of the wash / dehydrator through the bottom of the pulsator to the bottom of the pulsator channel; A filter case having a plurality of slit holes mounted at the bottom of the filter cover to be removed from the filter cover, and mounted to be removable on the filter case in a space confined by the washing / dewatering can, the filter cover and the filter case It includes a lint filter with a pocket net.

In the fully automatic dehydrator and washing machine having the above-mentioned configuration, in the case where the wet laundry blocks the drain hole in the draining process and the pressure in the air trap is reduced, the microcomputer control means is operated to detect the reset water level. If the time required to detect the reset water level is less than the time required to drain according to the water level at the start of the drain, the microcomputer control means operates to display the error immediately by using a display unit or buzzer or the pulsator is selected. It is driven to correct the position of the wet laundry inside the vat during the cycle. If the calibration is not possible even after repeating the calibration operation, the microcomputer control means is operated to display an error. As a result, it is possible to reduce the dewatering efficiency or to avoid abnormal vibration of the dewatering bottle at the time of dehydration. Therefore, the operating time can be reduced and water can be saved.

In addition, since the pumping drive channel extends under the pulsator, there is no collision between the flow of water drawn in and the flow of discharged water when the pulsator rotates. As a result, an effective pumping operation can be obtained. On the other hand, a slit hole through which water provided in the filter case flows is disposed at the bottom of the washing / dehydrating container. Therefore, the filter can provide excellent filter effects from the low water level to the high water level range. In addition, the bag-shaped net forming the lint filter allows collection with any lint even when the lint is very fine.

One embodiment of the present invention will be described in detail with reference to the drawings.

4 is a layout view showing an example of a control panel in the washing machine of the present invention. Referring to FIG. 4, reference numeral 1 denotes a control panel. The control panel includes a power switch (2), start / stop switch (3), washing key (4), rinse key (5), dehydration key (6), action selection key (7), water level setting key (8), and It has a clock key 9 for setting the current time. The control panel also includes a reservation key 10 used for setting the time to be reserved, a time key 11 for setting the time during the time setting performed by the clock key 9 and the reservation key 10, a time setting. A minute key 12 used to set the minutes for a while, and a display portion 14 used to display the number of sets, the time remaining during operation of the washing machine and the selection items in each mode.

5 is a block diagram showing an example of a control unit in the washing machine of the present invention. Referring to FIG. 5, reference numeral 15 includes a ROM 16 in which all operation programs are stored, and the washing time and the dehydration time can be changed by using the keys 4 to 7. The RAM 17 is operated to store signals from the keys 2 to 12 in the RAM 17 through the input control units 18 and 19. Reference numeral 20 denotes a calculation unit for comparing the respective data stored in the RAM, and performing addition and subtraction. Reference numeral 21 denotes a control unit for controlling the operation of each part in the microcomputer. Reference numeral 22 denotes a timer, and reference numerals 23 to 25 denote a control unit for operating each element by a signal called from the RAM 17.

The microcomputer detects the conditions used to detect the temperature of the water, the level of the water, the amount of clothing and the soiling of the clothing using an external circuit, for example, an input key circuit 26 and a sensor including the key switches 2 to 12. It is connected to the circuit 27. The microcomputer also displays the display unit 28 used to display the operating time, the operating procedure and the water level, the buzzer 29 used to audibly signal the end of the operation or the occurrence of an error, the drain valve 30, the supply valve. 31 and other external circuits such as the load drive circuit 33, the power supply circuit 34, and the reset circuit 35 used to control the drive motor 32 and the like.

The washing machine of the present invention includes a function for automatically determining the washing time. That is, the start switch 3 is turned on after the power switch 2 is turned on, and the sensor is operated to detect the temperature of the water, the level of the water and the amount of clothes. Thus, each time required for washing, rinsing or dewatering is set according to the programmed rules. Otherwise, to selectively set the washing time, the washing key 4, the rinsing key 5 and the dehydrating key 6 are pressed after the power switch 2 is turned on. Therefore, the washing time can optionally be determined within a predetermined time. Then, the start switch 3 is pressed to perform each operation up to a predetermined time.

For example, assume that the laundry used in the washing process is drained when the rinsing process begins after the washing process. Referring to FIG. 1, when wet laundry, such as clothes, is stuck on a portion corresponding to the drainage path 150 to block the drainage hole 150a, the pressure is reduced in the air trap 156 of the drainage path 150. Only air remains. The water level sensor 147 then operates to erroneously detect the reset water level. In this case, according to the present invention, if the reset water level is detected at a time interval smaller than the time interval (e.g. 40 seconds) corresponding to the level of water at the start of the drainage (e.g. intermediate water level) It is recognized that the drain hole is blocked. Thus, an error is immediately displayed by the display unit 28 and the buzzer 29 in response to a command from the microcomputer 15 as shown in FIG. Otherwise, the microcomputer 15 will begin a calibration operation as described later. If the blocked state is not cleared despite repeated calibration operations, an error is displayed.

6 is a flow chart displaying an error when drainage begins and an abnormality is detected. First, drainage is started, and then the level of water when drainage is started is detected in step 1 (S1). When the water level reaches the reset water level (Yes), the operation proceeds to the dewatering process in step 2 (S2), and the draining process becomes unnecessary. If water remains, the time interval required for drainage according to the remaining water level is defined as the drainage time interval t in step 3 (S3), and the drain valve is opened to drain in step 4 (S4). In step 5 (S5), the level of water is detected after the drain valve is opened in step 4 (S4). In step 6 (S6), when the water level reaches the reset water level (Yes), the operation proceeds to step 7 (S7), and the time interval from the actual opening operation of the drain valve to the detection of the reset water level is It is defined as T. If the time interval T is larger than the drainage time interval t, the operation proceeds to step 8 S8, and a dehydration process is performed. If the time interval T is smaller than the time interval t, the operation proceeds to step 9 S9, in which an error signal is immediately sent to the user by the display unit 28 or a sound is emitted from the buzzer 29. send. Thus, any operation such as relocation of wet laundry may be performed by the user.

FIG. 7 is a flowchart in which drainage starts and a correction operation is performed when an abnormality is detected, and an error is displayed when the correction is impossible. As shown in FIG. 7, each process from the start of drainage to step 8 (S8) is the same as that of each of FIG. In FIG. 7, if the time interval T between the opening operation of the drain valve and the detection of the reset water level is smaller than the drain interval t in step 8 S8, the operation proceeds to step 10 S10. And a calibration operation is performed. Thus, the drain valve is closed in step 11 (S11), and the pulsator is rotated left and right for a predetermined period (e.g., 5 seconds) for repositioning wet laundry such as clothes. The calibration operation is operated to remove the closing of the drain hole, the operation proceeds to step 14 (S14), and the water level is detected. Thereafter, the operation proceeds to step 15 (S15), and it is determined whether or not the reset water level is detected. If a reset water level is detected, it is determined that calibration is not possible. Thus, an error is displayed in step 9 (S9).

On the other hand, if a water level other than the reset water level is detected after the corrective operation, the operation proceeds to step 4 (S4), and the drain valve is a process [A] and a later process of step 3 (S3) in FIG. As in, it is opened to restart drainage. In steps 5 (S5) to 9 (S9), the operation is similarly performed, that is, if a reset water level is detected within a predetermined time interval, it is determined that correction is impossible and an error is displayed in step 9 (S9). do. As mentioned above, the error is displayed on the display unit 28 or known by the sound at the buzzer 29. Known by the sound in the display unit 28 or the buzzer 29. The display unit 28 or buzzer 29 allows the user to take appropriate measures, such as repositioning the wet laundry in the dehydration pail.

In the present invention configured as described above, the calibration operation is controlled by the microcomputer so that no drainage process is performed while the water is not completely drained even if the drainage hole is closed by wet laundry during the drainage process. Therefore, it is possible to eliminate abnormal vibrations and avoid deteriorating rinsing performance by reduced dehydration efficiency at the final dewatering. When washing such an improved waterproof garment or the like, dewatering efficiency cannot be improved if a corrective operation is performed. In this case, an error is displayed to inform the user at an early stage so that the washing process ends quickly without consuming time and water.

Another embodiment of the present invention will be described with reference to the drawings.

8 is a cross-sectional view showing the structure of another embodiment of a washing machine according to the present invention.

9 is a perspective view showing an example of a lint filter used in the present invention.

As shown in FIG. 8, the barrel 42 containing the dehydrated water is elastically supported in the outer cylinder 41 through the spring 44 and the support rod 43. The washing / dehydrating container 45 has a dehydration hole 45a only in the upper portion thereof, and is rotatably mounted in the container 42 containing the dehydrated water. The pulsator 46 is rotatably mounted on the middle portion of the lowermost part of the wash / dehydration pail 45. The pulsator 46 has a pumping vane 46b on the side of the rear surface of the laundry vane 46a on the side of the front surface.

The washing / dehydrating container 45 has a filter cover 47 built into the side of one portion. According to a feature of the invention as shown in FIG. 8, a filter cover 47 is provided to form the drive channel 50 used for the pumping operation of the pulsator 46. In addition, the filter case 48 is mounted on the filter cover 47 to mount the lint filter 49. As shown in FIG. 9A, the filter case 48 has a plurality of slit holes 48a through which water passes and a claw 48b used to remove the filter case 48. . The lint filter 49 has a filter case 48 such that the insertion portion 49b is inserted into the insertion hole 48c, and the spherical protrusion 49c is fixed to the mounting hole 48d as shown in FIG. 9B. ) Is mounted on. The washing / dehydrating container 45 and the pulsator 46 are driven by the drive motor 51 via the belt 53 and the mechanism part 52.

One of the features of the present invention is that the drive channel 50 extends under the filter cover 47 to the bottom of the pulsator 46. Thus, as can be seen in FIG. 8, the flow of sucked water and the flow of discharged water do not collide, and the pumping efficiency is hardly reduced. As a result, collection efficiency, such as lint, can be improved. In this case, the end of the drive channel 50 is disposed below the pulsator 46 and preferably opened around the middle portion of the radius of the pulsator 46.

In the embodiment of the invention as shown in FIG. 8, the drive channel 50 is formed in the lower part of the pulsator 46 by the filter cover 47 in the lateral range of the washing / dehydrating barrel 45. . The diameter of the washing / dehydrating pail 45 can be varied to provide a series of washing machines each having a different capacity. In order to eliminate such a change in the diameter, the drive channel 50 under the pulsator 46 may constitute a different element than the filter cover 47. The effect of such an element is exactly the same as that of the filter cover 47, and it should be understood to include such a feature even if it does not show specific features of the present invention.

The operation of the present invention is described with reference to FIG. 8 and FIG.

In the washing process, water is provided in accordance with the amount of clothes, and the pulsator 46 is rotated by the washing vanes 46a to generate a stream in the washing / dehydrating barrel 45 to perform washing. At that time, a stream drawn into the lower part of the pulsator 46 is generated in the laundry of the vat in response to the operation of the pumping vanes 46b of the pulsator 46. In particular, the wash water passes through the water flow slit hole 48a of the filter case 48 via the lint filter 49 and is pumped by the pulsator 46b by the pumping vanes 46b via the drive channel 50. Is discharged into the outer peripheral channel.

The lint generated during washing and moving of the laundry is directed to the stream described above and can be reliably collected through the bag-shaped net 49a of the lint filter 49. Collected lint can be easily removed by removing filter case 48 and lint filter 49.

In the dehydration process, the laundry is drained through the drain valve 54 and the wash / dehydration pail 45 is rotated at high speed. Therefore, the laundry water is drained to the tub 42 containing the dehydrated water by centrifugal force through the dehydration hole 45a provided in the upper portion of the washing / dehydrating tub 45. As a result, the laundry is drained out of the washing machine through the drain hose 55.

In the above-described structure, even the finest lint can be surely collected and can greatly improve the pumping operation efficiency of the pulsator. Therefore, an excellent effect is obtained.

Claims (2)

A pulsator disposed at the bottom of the wash / dewater bottle that is rotated during the dewatering process, driven during the washing process and having a pumping vane on the back, and a dehydration container including the wash / dewater bottle; There is a perforated peripheral wall other than the periphery of the upper end of the dehydration pail, which is disposed at the bottom of the laundering / dehydration pail and includes a drain hole that is closed to the dehydration pail to act as a drain pipe during the drainage process. In bucket dehydrators and washing machines, an error is displayed immediately or the position of the wet laundry in the bin is corrected by driving the pulsator for a predetermined period, and the wet laundry blocks the drain hole during the draining process to reset the water level. If error correction is not possible when detected by the reduced pressure in this air trap, Single barrel dehydrator and washing machine comprising microcomputer control means for displaying errors. Disposed at the bottom of the wash / dewater bottle that is rotated during the dewatering process, and driven during the washing process, comprising a pulsator with a pumping vane on the back and a dewatering container including the wash / dewater bottle; A perimeter-free perimeter wall other than the periphery of the upper end of the dewatering canister, which is disposed at the bottom of the laundering / dehydrating canister and includes a drainage hole that is closed to the dewatering canister to act as a drainage pipe during the drainage process. In a single keg dehydrator and washer, the error is displayed immediately or the position of the wet laundry in the keg is corrected by driving the pulsator for a predetermined period, and the wet laundry blocks the drain hole in the draining process to reset the water. When error correction is not possible when the level is detected by a reduced pressure in the air trap Microcomputer control means for displaying faults, a drive channel extending downwardly of the pulsator through its bottom at the side of the part of the wash / receiver, multiple mounted at the bottom of the filter cover for removal from the filter cover A filter case having a slit hole of a lint filter, and a lint filter having a bag-shaped net removably mounted on the filter case in a space defined by the laundry / dehydration pail, the filter cover and the filter case. Featuring single barrel dehydrator and washing machine.