CN103374808B - Washing machine - Google Patents

Abstract

The present invention provides a lint filter which is hard to be clogged and which is easy to remove collected lint. The washing machine includes: an inner tank serving as a washing and dehydrating tank rotatably provided in an outer tank for storing washing water; a pulsator plate rotatably provided at the bottom of the inner tank; The washing water circulation path in which the washing water in the tank circulates in the inner tank, wherein a lint filter is provided in the middle of the washing water circulation path, and the lint filter is provided with a cylindrical swivel chamber and substantially in a tangential direction. The water inlet portion connected to the peripheral wall surface of the swirl chamber has an opening covered with a mesh filter in a part of the peripheral wall surface of the swirl chamber.

Description

washing machine

technical field

The present invention relates to washing machines.

Background technique

The cleaning power of the washing machine is produced by the interaction of the mechanical action of the washing machine on the laundry and the chemical action of the detergent. Therefore, it is unavoidable that lint is generated from the laundry due to mechanical action. If this lint adheres to the laundry, the degree of cleanliness of washing will be unsatisfactory, and a lint filter for trapping lint is generally provided. A circulation path for washing water is provided to circulate the washing water in the washing tub during washing and rinsing, and the lint that comes out of the washing water is collected by a lint filter provided in the middle of the circulation path. As the form of the lint filter, there are a form in which a net is formed into a bag shape, a form in which an upper surface is opened and a side surface and a bottom surface are formed in a lattice shape, and the like.

On the other hand, Patent Document 1 below describes a filter purification device for an artificial bathhouse in which a cylindrical swirling chamber is provided above the filter in order to prolong the life of the filter. On the side wall of the revolving chamber and in the tangential direction, an inflow port for bath water is set to keep the inflowing garbage and foreign matter in the center of the revolving water area, avoiding direct contact between coarse solids and the filter, thereby preventing the filter from clogging.

Patent Document 1: Japanese Patent Application Publication No. 6-45694

Contents of the invention

In the conventional washing machine described above, it is troublesome to remove the lint collected by the lint filter. In the bag filter of the net, since lint is accumulated in the bag, it is necessary to turn the inside of the bag inside out to take out the lint. In addition, in the grid-shaped filter, the wire dust is entangled in the grid and cannot be easily removed. At the end of washing, the lint filter is in a wet state, and there are many desires to avoid direct hand contact with the wet lint as much as possible, and to easily remove it.

And, in the filtering and purifying device of artificial bathing place, make following structure, promptly, bathing water flows through filter layer from top to bottom, and big rubbish remains in the shape of a rod in the rotary chamber, but relatively small rubbish is captured and filtered by the filter. The lint generated during washing is often fine, and if this structure is used in a washing machine, the filter may be clogged.

An object of the present invention is to provide a lint filter that solves such a problem, is difficult to clog, and is easy to remove collected lint.

The washing machine includes: an inner tank serving as a washing and dehydrating tank that is rotatably installed in an outer tank that stores washing water; a pulsator plate that is rotatably provided at the bottom of the inner tank; A washing water circulation path in which washing water circulates in the inner tank, wherein a lint filter is provided in the middle of the washing water circulation path, and the lint filter has a cylindrical swivel chamber and is substantially tangential to the The water inlet portion is connected to the peripheral wall surface of the swirl chamber, and an opening covered by a mesh filter is provided on a part of the peripheral wall surface of the swirl chamber.

In the washing machine constructed in this way, since the washing water containing lint in the outer tank is guided into the cylindrical lint filter in the washing water circulation path, a swirling flow is generated, so that the lint can be collected in the drum at the same time. The central part of the shaped filter surface is collected. In addition, since the swirling flow flows along the mesh filter surface, lint adhering to the mesh filter can be easily peeled off by the fluid force of the swirling flow, and clogging of the mesh filter can be prevented. In addition, the lint collected on the bottom surface of the filter is in the form of balls or rods, and can be easily removed by inverting the filter and hitting it.

Description of drawings

FIG. 1 is an external view showing a washing and drying machine according to Embodiment 1 of the present invention.

Fig. 2 is a longitudinal sectional view showing a schematic structure of a washing and drying machine according to Embodiment 1 of the present invention.

3 is a perspective view of a pulsator plate of the washing and drying machine according to Embodiment 1 of the present invention.

Fig. 4 is a plan view of the upper surface of the tank cover of the washing and drying machine according to Embodiment 1 of the present invention.

Fig. 5 is a partial top view of the circulating water cover installation part on the lower surface of the tank cover shown in Fig. 4 .

Fig. 6 is a partial plan view showing a state in which the circulating water cover is removed in Fig. 5 .

Fig. 7 is a plan view showing a state in which the lint filter is attached to the circulating water cover.

Fig. 8 is an external view of a lint filter.

Fig. 9 is a plan view showing the cover of the lint filter removed.

Fig. 10 is a cross-sectional view of the lint filter taken along the dashed-dotted line A-A in Fig. 4 .

FIG. 11 is a cross-sectional view taken along the dashed-dotted line B-B in FIG. 4 .

Fig. 12 is a block diagram of a control system of the washing and drying machine shown in Fig. 2 .

13 is a flowchart showing a part of control processing executed by the microcomputer of the controller of the control system shown in FIG. 12 .

14 is a flowchart showing another part of the control process executed by the microcomputer of the controller of the control system shown in FIG. 12 .

15 is a longitudinal sectional view showing a schematic structure of a washing machine according to Embodiment 2 of the present invention.

Fig. 16 is a schematic view showing a state in which the lint filter is removed from the circulating water channel cover.

Fig. 17 is a front view of the lint filter seen from the center of the washing and dehydrating tank.

Fig. 18 is a cross-sectional view of the lint filter taken along line C-C of Fig. 17 .

In the picture:

1—outer frame, 4—water supply solenoid valve, 9—washing and dehydration tank, 9a, 9b—through hole, 10—outer tank, 11, 111—wave wheel disc, 13—washing and dehydration drive motor, 14—control device, 16—circulating pump, 30—circulating water cover, 31—outer tank cover, 34—sprinkler nozzle, 38, 72—lint filter, 40—microcomputer, 51, 72a—revolving chamber, 52—bottom plate, 53—cover , 51a, 52a, 53a, 73a—mesh filter, 55—water inlet, 71—circulating waterway cover, 73—peripheral wall, 74—side plate, 111a—inner impeller.

Detailed ways

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Implementation Example 1

Fig. 1 is an external view of a washing and drying machine according to Embodiment 1, Fig. 2 is a longitudinal sectional view showing an internal structure, and Fig. 3 is an external view of a pulsator disc.

Reference numeral 1 is a square cylindrical outer frame constituting the outer outline. Reference numeral 2 is a top cover attached to the upper part of the outer frame 1 . Reference numeral 3 is an outer cover 3 attached to the top cover 2 . The outer cover 3 is opened so as to be bent at the center, and an operation panel 8 including various operation button switches 6 , 6 a and displays 7 , 25 is provided on the front side. The operation panel 8 is electrically connected with the control device 14 arranged at the bottom of the machine body. Reference numeral 5 is a power switch provided on the front surface of the top cover 2 . The parts associated with water supply, drying such as water supply solenoid valve 4, heater 20, blower fan 19 are built in the rear portion of top cover 2, and washing/finishing agent container 28 is built in the front side of top cover 2.

Symbol 9 is a washing and dehydrating tank, which has a plurality of small through holes 9a for water flow and ventilation on its outer peripheral wall, a plurality of through holes 9b for water flow and ventilation on its bottom wall, and a plurality of through holes 9b for water flow and ventilation on its upper edge. The bottom part has a fluid balancer 9c, and a pulsator plate 11 is provided rotatably inside the bottom.

As shown in FIG. 3, on the upper surface of the pulsator plate 11, there are raised portions 11a and a plurality of drainage through-holes 11b that form a plurality of inclined surfaces that are gently inclined in the direction of rotation, so that the pulsator plate 11 can be poured in by rotation. The laundry in the washing and dehydrating tank 9 and placed on the pulsator plate 11 repeatedly moves upward. The protruding portion 11a is inclined in a mountain shape in the rotational direction, and is inclined in the radial direction so that the outer peripheral portion becomes higher in order, and the outer peripheral end surface 11c is an inclined surface inclined so that the upper portion falls toward the center side. In this embodiment, two raised portions 11a are provided.

If the pulsator plate 11 rotates, the laundry on the pulsator plate 11 rotates in the rotation direction of the pulsator plate 11 while sliding on the pulsator plate 11, and is pressed against the protruding portion 11a to move upward and downward. vibration. At this time, the washing water is sprayed from above the laundry while circulating the washing water, so that the washing water is spread over the laundry. In this way, washing can be performed even if washing water is not accumulated in the washing and dehydrating tank 9, and water can be largely saved.

Reference numeral 10 is an outer tank containing the above-mentioned washing and dehydrating tank 9, and a washing and dehydrating driving device is installed outside the bottom thereof. The outer tank 10 is equally supported by the four support rods through the four directions of the outer tank 10 through the buffer device 10a, thereby hanging from the center of the outer frame 1, wherein the four support rods are locked It hangs down from the gussets provided at the four corners of the upper end of the outer frame 1 . The above-mentioned washing and dehydrating driving device is equipped with a washing and dehydrating driving motor 13, an electromagnetically operated clutch mechanism 12, and a planetary gear speed reduction mechanism using a variable frequency drive motor or a reversible rotation type capacitance split-phase single-phase induction motor, and the washing and dehydrating driving motor 13 and The electromagnetically operated clutch mechanism 12 is controlled to selectively perform the driving function of the following modes: the washing and dehydrating tank 9 is locked in a stationary state or the pulsator disc 11 is repeatedly rotated in the forward and reverse directions in a released state in which it can rotate freely. The washing driving mode; the dehydrating driving mode in which the washing and dehydrating tank 9 and the pulsator disc 11 are integrally rotated in the same direction.

Reference numeral 27 is a vibration sensor, which is provided outside the side surface of the outer tank 10, and detects the vibration of the outer tank 10 during washing or dehydration when the washing and dehydrating tank 9 rotates at high speed.

Reference numeral 31 is an outer tank cover provided on the upper surface of the outer tank 10 . FIG. 4 is a plan view of the outer tank cover 31 viewed from above. The front side of the outer tank cover 31 has a laundry inlet 31a at a distance of about 2/3, and the rear surface 31b is provided with a warm air outlet 22a communicating with the upper surface and the lower surface of the outer tank cover 31, a water supply inlet 32, and Circulating water inlet 33. In addition, at the front of the outer tank cover 31, a cleaning/softening agent inlet 28a is provided. Reference numeral 23 is an inner cover provided so as to cover the laundry inlet 31a. The inner cover 23 is freely openable and closable by a hinge 23b, and the lock of the inner cover 23 is released by lifting the handle 23a upward (not shown), and is locked by pressing the handle 23a downward.

Symbol 22 is a drying pipe, which connects the drying water vent 10b and the warm air outlet 22a. In the middle of the drying duct 22, the blower fan 19, the heater 20, the lint filter (not shown), the dehumidification mechanism 22b, and the temperature sensor 26 are provided. When the blower fan 19 is operated and the heater 20 is energized, warm air is blown into the washing and dehydrating tub 9 to heat the laundry and evaporate water. The high-temperature and high-humidity air circulates through the through-holes 9a, 9b, is discharged to the outer tank 10, is sucked into the drying pipe 22 through the water vent 10b, and is cooled and dehumidified by the cooling water flowing down the dehumidification mechanism 22b to become dry. The low-temperature air is heated again by the heater 20, and is blown into the washing and dehydrating tank 9.

Symbols 29a, 29b, 29c, 29d, 29e, and 29f are bellows made of rubber, which are used for drying the outer tank 10 or outer tank cover 31 provided on the fixed side (outer frame 1 or top cover 2, etc.) for vibration displacement. Pipe 22, water supply electromagnetic valve 4 or circulating pump 16 etc. are connected.

The water supply solenoid valve 4 uses a quadruple valve in order to supply water in four directions in this embodiment. The first valve is a washing water supply electromagnetic valve, which is connected with the water supply inlet 32 and supplies water from the water spout 35 of the water supply path 36 to the washing and dehydrating tank 9 . The second valve is a washing water supply electromagnetic valve, which is connected to the detergent injection chamber of the washing/finishing agent container 28 . The third valve is a finishing agent water supply electromagnetic valve, which is connected with the finishing agent input chamber of the washing/finishing agent container 28 . The cleaning/finishing agent container 28 is connected to the cleaning/finishing agent inlet 28a, and supplies detergent or finishing agent into the outer tank 10. The fourth valve is connected to the dehumidification mechanism 22b described later.

An air trap 21 a is provided on the bottom surface of the outer tank 10 , and the internal pressure is transmitted to the water level sensor 21 through the pipe 21 b to detect the water level of the washing water in the outer tank 10 .

Symbol 17 is a circulation pipe for washing water, which connects the water vent 10b and the circulation water inlet 33 arranged at the bottom of the outer tank. In the middle of the circulation pipe 17 , there are a circulation pump 16 and a foreign matter catcher 18 provided at the bottom of the body, and the foreign matter catcher 18 is connected to a drain hose 24 via a drain valve 15 .

Reference numeral 30 is a circulating water cover provided on the lower surface (washing and dehydrating tank 9 side) of the rear surface 31b of the outer tank cover 31 . 5 is a plan view from below of the rear surface 31b of the outer tank cover 31 to which the circulating water cover 30 and the water supply cover 36 are attached, and FIG. 6 is a plan view showing a state in which the circulating water cover 30 is removed in FIG. 5 .

The circulating water cover 30 guides the washing water flowing in from the circulating water inlet 33 to the laundry inlet 31 a side of the outer tank cover 31 and sprinkles water into the washing and dehydrating tank 9 . The water supply cover 36 is provided to guide the tap water flowing in from the water supply inlet 32 to the side of the laundry inlet 31 a, and to sprinkle water into the washing and dehydrating tub 9 . The water supply cover 36 is provided with a plurality of water spouts 35 opening toward the inside of the washing and dehydrating tub 9 .

A circulating water channel 37 is formed in the circulating water cover 30 . One end of the circulating water channel 37 is connected to the circulating water inlet 33 , and the other end is connected to the sprinkling nozzle 34 . By pressing the end surface of the circulating water cover 30 against the gasket 58, the periphery of the circulating water channel 37 is water-sealed.

7 is a plan view of the circulating water cover 30 with the lint filter 38 installed from above, FIG. 8 is an external view of the lint filter 38 with the cover 53 opened, and FIG. 10 is a cross-sectional view of the lint filter 38 taken along the dashed-dotted line A-A in FIG. 4 , and FIG. 11 is taken along the dashed-dotted line B-B in FIG. A cross-sectional view of the inlet of the chip filter 38 .

Reference numeral 38 denotes a lint filter provided in the middle of the circulating water channel 37 , and is inserted and mounted in the mounting port 30 c provided in the front surface of the circulating water cover 30 . The lint filter 38 is composed of a handle 38 a , a base plate 54 , a flat cylindrical swirl chamber with an open upper surface, and a cover 53 that closes the upper opening of the swirl chamber 51 .

Grooves 38b and 38c for locking are provided on the left and right side surfaces of the handle 38a. The base plate 54 is a box-shaped body with front and upper openings, and the handle 38a is rotatably attached to a shaft provided at the center of the rear side surface 54d. Insert the lint filter 38 into the installation port 30c, rotate the handle 38, and put the lock pins 30b of the support part 30a provided on both sides of the installation port 30c into the grooves 38b, 38c to lock the handle 38a. At this time, the protruding portion provided on the rear side surface 54d is in close contact with the gasket 56 provided around the attachment port 30c, thereby preventing water from leaking out of the circulating water cover 30 . The left and right side surfaces 54a, 54b of the base plate 54 are provided with bearing holes 54c to which the shaft of the cover 53 described later is attached.

A swirl chamber 51 exists at the front end of the base plate 54 . Part of the peripheral wall surface 51f of the swirl chamber 51 is provided with a notch, and the notch is connected to the water inlet portion 55 formed by the side wall 51b and the side wall 51c. The side wall 51b is connected substantially tangentially to the circumferential side wall surface of the swirl chamber 51 . In addition, the side wall 51b and the side wall 51c are set so that the interval becomes narrower toward the swirl chamber 51, so that the flow path area of the water inlet portion 55 is gradually reduced to increase the flow velocity of the water flowing toward the swirl chamber 51, and the flow is closer to the swirl chamber 51. The swirl flow is stably generated in the swirl chamber 51 toward the outer shape side of the swirl chamber 51 . In addition, the peripheral wall surface 51f has a plurality of openings surrounded by the frame 51e, and the mesh filter 51a is provided in close contact with the inner peripheral surface of the peripheral wall surface 51f without any step difference.

The bottom plate 52 of the swirling chamber has a plurality of openings surrounded by a frame 52b, and a mesh filter 52a is provided in close contact with the upper surface of the bottom plate 52 without any step difference. The cover 53 has a plurality of openings, and on the lower surface of the cover 53, a mesh filter 53a is provided in close contact with each other without any step difference. A circular gasket 53b is attached to the outside of the mesh filter 53a, and when the cover is closed, the gasket 53b is in close contact with the upper end surface of the peripheral wall surface 51f of the swirl chamber 51 . The cover 53 is attached by putting the shaft 53c provided in the rear end into the bearing hole 54c, and the handle 38a side can be opened and closed centering on a shaft. In this way, the mesh filter is closely attached to the installation surface without step difference, so that there is no situation where the wire scraps are caught at the end of the mesh filter.

On the upper surface of the cover 53, a groove 53d is provided parallel to the installation direction of the lint filter 38. By installing the lint filter 38, the rib 31d formed on the lower surface of the rear surface 31b of the outer tank cover 31 is fitted. Installed in groove 53d. On the other hand, a raised portion 30d protruding inward is formed on the bottom surface of the circulating water cover 30 . This is because a gap is provided between the bottom plate 52 and the circulating water cover 30, and the washing water flowing out from the mesh filter 52a of the bottom plate flows through the gap. When the lint filter 38 is attached, the lint filter is sandwiched between the rib 31d and the raised portion 30d, and the cover 53 is pressed. Therefore, it is possible to prevent the lid 53 from opening due to the pressure of the washing water flowing into the swirl chamber 51 and the washing water directly passing through the lint filter.

In addition, in order to ensure that washing water flows into the water inlet portion 55, a straightening member 31c is provided on the lower surface of the rear surface 31b of the outer tank cover 31, and a straightening member 37b is provided on the circulating water cover 30. A gasket 59 is provided on the lower surface of the rectifying member 31c. In addition, a gasket 60 is provided on the inner surface of the circulating water cover 30 on the lower side of the water inlet portion 55 close to the bottom plate 52 . If the lint filter 38 is installed in the circulating water cover, the lower surface of the rectifying member 31c abuts against the end surface of the side wall 51c, the upper surface of the rectifying member 37b and the upper surface of the cover 53, and the end face of the side wall 51b contacts the rectifying member 37b. end face abutment. Accordingly, substantially all of the washing water flowing into the circulating water channel 37 c of the circulating water cover 30 from the circulating water inlet 33 can be guided to the water inlet portion 55 of the lint filter 38 . In addition, the level difference of the abutting part is made extremely small, so that flow resistance does not occur or thread scraps are caught.

Sprinkler nozzle 34 exists in the approximate center of outer tank cover 31 in the left-right direction, near the front edge of rear surface 31 b of outer tank cover 31 , and is located on the rear side of the center of washing and dehydrating tank 9 . The sprinkler nozzle 34 includes: a cylindrical swivel chamber 34a; an inlet 34b provided on the peripheral wall of the swivel chamber 34a; a circular outlet 34c located at the center of the bottom surface and opening in the vertical direction; and a peripheral wall provided on the swivel chamber 34a. Lower generally rectangular outlet 34d. At least one wall of the inlet 34b is connected to the peripheral wall surface of the swirl chamber 34a in a substantially tangential direction. The outlet 34c opens in the vertical direction.

If the circulation pump 16 runs, the washing water in the outer tank 10 will flow to the upper part of the outer tank 10 through the circulation pipe 17 from the water outlet 10b located at the bottom of the outer tank 10, and enter the circulation from the circulating water inlet 33 of the outer tank cover 31. The circulating water channel 37a of the water cover 30 uses the lint filter 38 to remove lint, and the washing water flows into the washing and dehydrating tank 9 from the sprinkler nozzle 34 through the circulating water channel 37 (see arrows in FIGS. 5 and 7 ).

The flow of the washing water in the circulating water cover 30 will be described in detail. The washing water enters the water inlet portion 55 of the lint filter 38 from the circulating water channel 37 a (arrow 61 ). The flow path area of the water inlet portion 55 is reduced, so that the washing water enters the swirling chamber 51 at an increased flow rate, and becomes a swirling flow along the peripheral wall surface 51f (arrow 62 ). Since the lint contained in the washing water is lighter than water, the lint is basically accumulated in a columnar shape while revolving in the substantially central portion of the swirling chamber 51 due to the swirling flow. The washing water flows out from the mesh filters 51 a , 52 a , and 53 a provided in the lint filter 38 to the circulating water channel 37 (arrows 62 a , 63 , and 64 ). At this time, the remaining lint is removed and remains on the surface of the mesh filter. In a general lint filter, the flow direction of washing water is basically perpendicular to the filter surface, and lint adheres to the filter surface, and the accumulated lint acts as a filter, so that the lint is always accumulated. Therefore, the pressure loss of the flow path increases, and the circulation flow rate of the washing water decreases. However, in this embodiment, the washing water flows along the mesh filter in a swirling manner, so that the attachment state of the lint to the surface of the mesh filter becomes weak. Therefore, if the lint in the mesh filter portion increases, it can be easily peeled off by the fluid force of the washing water, and concentrated in the center of the swirling chamber 51 by the swirling flow. In this way, the mesh filter is automatically cleaned, so that lint does not accumulate in the mesh filter to clog the mesh filter, and the circulation flow rate of the washing water can be kept substantially constant. In addition, since there is no need to increase the area of the mesh filter more than necessary, it is also effective in reducing the size of the lint filter 38 . The lint accumulated as described above will form a lump at the approximate center of the bottom plate 52 when the circulation of the washing water is stopped. Therefore, when removing the lint filter, remove the lint filter 38, open the cover 53, turn the lint filter 38 upside down (with the bottom plate 52 on the upper side), and lightly tap the lint filter to easily drop it. . Therefore, the lint filter 38 can be easily removed without directly touching the lint with the hand. In addition, due to the substantially planar and cylindrical shape of the mesh filter, even a little bit of lint adhering to the mesh filter can be easily removed by brushing lightly with a brush or the like.

In this embodiment, openings are not provided in the peripheral wall surface 51d near the entrance of the swirling chamber, the bottom plate 52c, and the cover 53e. As will be described later, since the lint filter is made small and flat, the length of the water inlet 55 will not be very long, and the washing water entering the swirl chamber 51 of the lint filter will not flow out of the mesh filter immediately. Furthermore, it is possible to efficiently and reliably generate a swirling flow in the swirling chamber 51 .

In addition, in the structure of this Example, as shown in FIG. 11, the lint filter 38 is provided in the position lower than the circulating water channel 37c. This is to flow washing water from circulating water inlet 33 on the upper surface of outer tank cover 31 to lint filter 38 or sprinkler nozzle 34 provided on the lower surface of outer tank cover 31 . Therefore, the bottom plate 52c near the inflow portion of the swirl chamber 51 does not have an opening since the wash water entering the water inlet portion 55 has a downward velocity. This is because, if water flows at a large angle with respect to the mesh filter, it is difficult to remove lint by fluid force, and the mesh filter is easily clogged. Therefore, no opening is provided in the bottom plate portion 52c in the vicinity of the inflow portion, and the flow of water is made to follow the surface of the mesh filter 52a as much as possible in this portion. In addition, in terms of structure, when washing water entering the swirl chamber flows in such that the flow direction has an angle with respect to the cylindrical direction, a wall is provided near the inlet of the swirl chamber in order to rectify the flow. That is, no opening (mesh filter portion 51 a ) is provided. Of course, if there is room in the size, since the length of the water inlet part 55 is ensured sufficiently, it is not necessary to carry out the above-mentioned countermeasures.

In the lint filter 38 described above, the height of the circulating water cover 30 is suppressed so as not to interfere with the movement of the clothes in the washing and dehydrating tank 9 during washing or drying, and the lint filter 38 is small and flat. change. Therefore, in order to ensure the flow rate of washing water, openings (mesh filter) are provided on the peripheral wall surface 51d of the lint filter, the bottom plate 52, and the cover 53 to increase the filtration area.

However, if there is room for the size of the lint filter, it is not necessary to provide mesh filters on all three surfaces. In this case, it is preferable to provide an opening in the side wall and provide a small opening for drainage in the bottom plate 52 . This is because the lint adhering to the mesh filter of the side wall is most easily removed by the fluid force of the swirling flow. Furthermore, since the positions where the mesh filter is installed by bonding, welding, etc. are reduced, the processing cost can be reduced.

In addition, the bottom plate 52 is formed in a mortar shape with a low center portion, and it is preferable to provide an opening (mesh filter) for draining water at the bottom thereof. After the circulation of the washing water is stopped, the collected lint can be efficiently drained and removed more easily.

The washing water in the circulating water channel 37 enters the sprinkler nozzle 34 from the inlet 34 b (arrow 65 ). Then, it flows into the sprinkler nozzle 34 along the peripheral wall surface of the swirling chamber 34 a, and becomes a swirling flow again (arrow 66 ). And, it is discharged into the washing and dehydrating tank 9 from the outlet 34c on the bottom surface. Due to the centrifugal force of turning on the water in the turning chamber 34a, the water discharged from the outlet 34c turns into a conical thin film that expands downward while turning as shown by the arrow 67 in FIG. spray. Therefore, even if the amount of water is small, high cleaning performance can be realized by spreading the washing water over the laundry.

If the operation of the circulation pump 16 stops, the circulation of the washing water stops naturally, but the circulation pipe 17 and the circulation water cover 30 are filled with washing water, and the washing water flows back into the outer tank 10 through the circulation pipe 17 at one breath due to gravity. Therefore, if the circulation pump 16 stops suddenly, the lint collected by the lint filter 38 is also returned to the circulation pump 16 below the outer tank, the circulation pipe 17, and the outer tank 10 together with the washing water. This is a backwash action and does not require removal of lint from the lint filter. However, the lint becomes agglomerated in the lint filter, clogs the circulation pipe, and may flow in the drain hose 24 during drainage to clog the drain catcher.

Therefore, when the circulation pump 16 is stopped, the rotation speed of the circulation pump is decreased, and the rotation speed of the circulation pump is maintained at 5 to 10 so that the height of the discharge water head of the circulation pump becomes the same as or lower than the height of the lower surface of the lint filter 38 . seconds, then stop. In this way, the washing water in the circulating water cover 30 is gradually reversed while sucking in air from the sprinkler nozzle outlet 34c, thereby preventing the lint in the lint filter 38 from flowing to the circulating water channel 37c side together with the washing water.

Fig. 12 is a block diagram of a control unit of the washing and drying machine. Symbol 40 is a microcomputer, which is connected to the operation button input circuit 41, water level sensor 21, temperature sensor 26, and vibration sensor 27 connected to each switch 6, 6a, and accepts user's button operation or washing process, drying process. Various information signals. The output from the microcomputer 40 controls the opening and closing or rotation of the water supply solenoid valve 4, clutch 12, drain valve 15, circulation pipe 16, washing and dehydration drive motor 13, blower fan 19, heater 20, etc. connected to the drive circuit 42, Power on to control. In addition, it is connected to a seven-segment light-emitting diode display 25, a light-emitting diode 7, and a buzzer 43 for notifying the user of the operating state of the washing machine.

When the power switch 5 is pressed and the power is turned on, the microcomputer 40 starts up and executes the basic control processing programs for washing and drying shown in FIGS. 13 and 14 .

Step S101

Perform state confirmation and initial setting of the washing and drying machine.

Step S102

The display 25 of the operation panel 8 is turned on, and the washing course is set according to an instruction input from the operation key switch 6 . In the state where there is no instruction input, the standard washing course or the washing course carried out last time is automatically set.

Step S103

The processing is branched by monitoring the instruction input from the start switch 6 a of the operation key switch 6 of the operation panel 8 .

Step S104

Detergent amount detection processing is executed. The amount of detergent is detected by rotating the pulsator plate 11 in one direction while the washing and dehydrating tank 9 is stationary in the dry state before supplying the washing water. 11 rotation load capacity, the washing and dehydration drive motor 13 and the electromagnetically operated clutch mechanism 12 of the washing and dehydration driving device are controlled in the manner of detecting the amount of laundry, and the applicable amount of detergent is calculated based on the detected amount of laundry (washing dose). The amount of detergent is obtained by referring to a comparison table of the amount of laundry and the amount of detergent set in advance. Specifically, the detection of the amount of laundry is performed by detecting the attained rotational speed after a predetermined time is supplied so as to rotate the washing and dehydrating driving motor 13 in a structure using an inverter driving motor 13 . On the other hand, in the structure using a capacitive phase-splitting single-phase induction motor as the washing and dehydrating drive motor 13, it is performed by detecting the inertial rotation deceleration characteristics after the power is turned off in a state where the washing and dehydrating driving motor 13 is raised to a saturated rotational speed with power supply. . In addition, a preferable detergent is obtained by referring to a comparison table of the amount of laundry and detergent set in advance.

The amount of washing water is set to the amount of washing water (water level h1) so that when the amount of laundry is within a predetermined range (appropriate amount), the water level does not exceed the pulsator plate 11 and accumulate in the bottom of the outer tub 10 .

Then, based on the detection result (clothes amount), the washing time is obtained and set. When the detection of the amount of laundry is not performed, a standard washing time is set.

Step S105

The calculated amount of detergent is displayed on the display 25 of the operation panel 8 .

Step S106

The detergent water supply solenoid valve is opened to perform supply of detergent water to the detergent injection chamber of the washing/softening agent container 28 . The user puts the displayed amount of powder detergent into the washing/softening agent container 28, and then operates to close the outer cover 3. The powdered detergent injected into the detergent injection chamber through which the detergent water flows flows down to the bottom of the outer tank 6 through the washing/softening agent inlet 28 together with the water of the detergent water supply.

Step S107

Stop water supply after supplying water to the detergent dissolved water level. In this embodiment, regardless of the amount of detergent (the amount of laundry), the amount of detergent water supply is set to about 10 liters. This amount of water is sufficient for the water and detergent that are agitated and supplied at the bottom of the washing and dehydrating tank 9 when the washing and dehydrating tank 9 is rotated in the subsequent detergent dissolving process (step S108), and the water level is set to a ratio The height of the lower surface of the pulsator plate 11 is low (the laundry is not wet until the detergent is dissolved).

Step S108

By making the washing and dehydration tank 9 and the pulsator disc 11 rotate slowly in one direction (about 70 revolutions per minute), the detergent is dissolved, that is, it is thrown into the outer tank 10 at the bottom of the washing and dehydration tank 9. The detergent dissolved water at the bottom and the powder detergent are stirred to generate high detergent concentration wash water. It is sufficient if the time for the detergent to dissolve is 1 minute. It also has a dissolution rate of about 90% under the condition of low temperature (low water temperature) and difficult-to-dissolve powder detergent. The detergent concentration of the resulting wash water is about 7 times. Here, the standard concentration is a ratio of powder detergent amount 20 g/wash water amount 30 liters.

Step S109

Wash before performing. In this pre-cleaning, the washing and dehydrating tank 9 is kept still and the agitation is intermittently performed to rotate the pulsator disc 11 forward and reverse, and the circulation pump 16 is operated during the forward and reverse rotation of the pulsator disc 11. 34 Spray the washing water at the bottom of the outer tub 10 onto the laundry. While the pulsator plate 11 and the circulation pump 16 are stopped, the detergent water supply solenoid valve and the washing water supply solenoid valve are opened while referring to the detection signal of the water level sensor 21 to supplement water supply so that the water level does not exceed the set water level. By repeating this operation a plurality of times, the laundry is fully immersed in the washing water and dispersed on the pulsator plate 11 .

During the first forward and reverse rotation, the washing water with about 7 times the detergent concentration is sprayed on the laundry and soaked in the laundry. The high-concentration washing water is sprayed from the outlet 34c of the sprinkler nozzle 34 to the entire laundry to uniformly saturate the laundry due to the soaking action of the detergent. The oil in the high-concentration wash water that permeates the laundry has a high dissolving ability, so it dissolves grease and dirt, and has a very large effect of floating the dirt from the laundry, thereby obtaining high cleaning power.

By repeated replenishment of water supply, the concentration of detergent in the washing water sprayed on the laundry gradually decreases, and becomes about twice the standard concentration at the end of the previous washing.

Step S110

Perform a formal wash. In this main washing, first, the amount of laundry is detected by the same method as above, and the set washing time is corrected and set. Afterwards, the agitation of the washing water circulation for about 2 minutes and the agitation of loosening the clothes for about 1 minute are repeated. The circulation pump 16 is operated, and the washing water accumulated at the bottom of the outer tank 10 is sprayed from the sprinkler nozzle 34 on the laundry, and the laundry is untied and agitated by stopping the operation of the circulation pump 16 to stop the circulation of the washing water. Stirring by rotating the pulsator disc 11 in the forward and reverse directions. The washing water sprayed from the water spray nozzle 34 spreads in a thin film and has an effect of suppressing splashing when it comes into contact with the laundry. In addition, during the main washing, there is an effect of eliminating the foam of the detergent generated in the washing and dehydrating tank 9, thereby suppressing excessive foaming. Therefore, it is possible to prevent a decrease in cleaning power due to the buffering action of the foam of the detergent. In addition, it is possible to smoothly perform draining after main washing, thereby also having an effect of being able to prevent foaming during dehydration.

Finally, the main washing time is completed by performing homogenizing agitation for about 1 minute, in which the pulsator disc 11 is rotated forward and backward while the circulation pump 16 is stopped to stop the circulation of the washing water.

Step S111

Perform the first backlog flush. In this accumulation flushing, first, after opening the drain valve 15 to discharge the washing water accumulated in the bottom of the outer tank 10, the washing and dehydration tank 9 and the pulsator plate 11 are integrally rotated in one direction to remove the washing water contained in the laundry. The washing water was centrifuged for dehydration. The rotation speed of washing and dehydration tank 9 and pulsator disk 11 during the dehydration of the washing water is set to be the same as the rotation speed (about 1000 rpm) of the final dehydration described later, and the dehydration operation is performed to achieve a high dehydration rate.

After that, while closing the drain electromagnetic valve 15, the washing and dehydrating tank 9 and the pulsator plate 11 are integrally rotated at a slow speed in one direction (35-40rpm), and the washing water supply electromagnetic valve is opened to allow tap water to flow from the spout 35 to the pulsator plate. The laundry on 11 is sprayed and supplied with water.

Next, with the rotation of the washing and dehydrating tub 9 and the pulsator disk 11 stopped, flush water is supplied so that the water level at the bottom of the outer tub 10 does not exceed the set water level.

Next, the same as the push washing and agitation of the main washing, the rinse water circulation agitation rinse that circulates in the following manner is performed, that is, while the washing and dehydration tank 9 is made to rotate forward and reverse in the state where the washing and dehydration tank 9 is stationary, the washing water circulation pump is turned on. 16 is operated so that the flushing water accumulated in the bottom of the outer tank 10 is sprayed on the laundry on the pulsator plate 11 from the sprinkler nozzle 34 .

Next, in a state where the rotation of the pulsator plate 11 and the operation of the washing water circulation pump 16 are stopped, the water level of the flush water pooled in the bottom of the outer tank 10 is detected, and the water level is replenished so that the water level does not exceed the set water level. water supply.

Next, the flushing water circulation agitation flushing that circulates in such a manner that the washing water circulation pump 16 is operated while the pulsator disk 11 is rotated forward and reverse while the washing and dehydrating tub 9 is stationary is performed to drain the water accumulated in the outer tub. The washing water at the bottom of 10 is sprayed on the laundry on the pulsator plate 11 from the sprinkler nozzle 34 . The rinse water flowing out from the outlet 34c of the sprinkler nozzle 34 is evenly sprayed on the laundry to efficiently dilute the detergent components contained in the laundry, thereby improving the rinse performance.

Thereafter, homogenization stirring is performed in which the forward and reverse rotation of the pulsator disk 11 is continued while the electric circulation pump 16 is stopped to stop the circulation of the rinse water.

Step S112

Perform a second backlog flush. In this second storage and flushing, by opening the softening agent water supply electromagnetic valve, water is supplied to the softening agent input chamber of the washing/finishing agent input container 28, and the softener that is introduced into the softening agent input chamber at the bottom of the outer tank 10 is added. Finishing agent control. Other operations are the same as the first accumulation flush.

Step S113

Perform final dehydration. In the final dehydration, under the state of keeping the drain electromagnetic valve 15 open, operate the washing and dehydrating driving device, so that the washing and dehydration tank 9 and the pulsator disc 11 are integrally rotated at a high speed in one direction at about 1000 rpm, thereby washing and dehydration tank 9 Centrifuge the laundry inside. The operation time of this final dehydration is set to the time at which a desired dehydration rate can be obtained.

Step S114

Check whether the washing and drying process is set to branch.

Step S115

Drying is performed with the washing and drying course set. In this drying, keep the drain electromagnetic valve 15 open, as in the washing process, while the washing and dehydrating tank 9 is made to rotate forward and reverse in the state where the washing and dehydrating tank 9 is stationary, the pulsator plate 11 is set in the middle of the drying pipe 22. The blower fan 19 operates, so that the air in the outer tank 10 is sucked into the drying pipe 22 from the water vent 10b. The cooling water dripping from 22b contacts, and after cooling and dehumidifying, lint is collected by the lint filter, and after being heated by the heater 20, it is blown into the washing and dehydrating tank 9 from the warm air outlet 22a.

Drying is performed while monitoring the temperature of the warm air by the temperature sensor 26, and the drying is terminated when the rate of temperature change reaches a predetermined value.

According to this embodiment, since the washing water containing lint in the outer tank 10 generates a swirling flow in the washing water circulation path and is introduced into the cylindrical lint filter 38, it is possible to make the lint flow in the cylindrical filter. Collect while concentrating on the central part of the surface. In addition, since the swirling flow flows along the surface of the mesh filter, lint adhering to the mesh filter can be easily peeled off by the fluid force of the swirling flow, and clogging of the mesh filter can be prevented. In addition, the lint collected on the bottom surface of the filter is in the shape of balls or rods, and can be easily removed by inverting the filter and hitting it.

In addition, since openings covered with a mesh filter are provided on the cylindrical surface, the bottom surface, and the cover, the lint filter 38 can be thinned and miniaturized without reducing the circulation flow rate of the washing water while ensuring the filtration area. , and can also be installed in a small space.

When the circulating pump 16 is stopped, the circulating pump 16 is stopped to slowly discharge the lint filter after the circulating pump 16 is kept at a rotational speed at which the height of the discharge water level difference is approximately equal to the height of the lower surface of the lint filter 38 for a short period of time. The water in the device 38, and then the caught lint will not flow back into the outer tank 10.

Implementation example 2

15 is a longitudinal sectional view showing the internal structure of a washing machine according to Embodiment 2, FIG. 16 is a schematic view of a lint filter installation part, FIG. 17 is a front view of a lint filter installation part, and FIG. A sectional view of the lint filter cut by the dotted line C-C.

The same symbols as those in Embodiment 1 denote the same parts, and thus description thereof will be omitted. The present embodiment is characterized in that the washing water is circulated without using a circulation pump, and is a lint filter structure that uses the upward force caused by the rotation of the inner impeller radially provided on the bottom surface of the pulsator disk 11 . A display panel 108 including a display and various operation key switches is provided on the front side of the top cover 2, and is electrically connected to the control device 14 provided at the bottom of the body. A water supply solenoid valve 4 and a cleaning/finishing agent input container 128 are built in the rear portion of the top cover 2 .

A pulsator plate 111 is rotatably provided inside the bottom of the washing and dehydrating tub 9 . The surface shape of the pulsator disk is the same as that of the pulsator disk 11 shown in FIG. 3 , or it may be a general stirring impeller provided with a plurality of convex ribs extending radially from the center on the disk. A plurality of radial inner impellers 111 a are provided on the back surface (lower surface) of the pulsator disk 111 . At the bottom of the washing and dehydrating tub 9 around the pulsator disk 111, an annular lower ring 9c for narrowing the gap between the periphery of the pulsator disk 111 and the inner peripheral surface of the washing and dehydrating tub 9 is provided. A labyrinth seal is formed by the outer periphery of the pulsator plate 111 and the lower ring 9c, so that it is difficult for washing water to flow through the gap between the pulsator plate 111 and the lower ring 9c. The lower ring 9c has a cylindrical surface 9d whose inner peripheral portion is substantially in close contact with the bottom surface of the washing and dehydrating tub 9 . A plurality of cutouts are formed in the lower ring 9c, and a circulation waterway cover 71 and a circulation waterway cover 81 for washing water are provided in the cutouts. If the circulating water channel covers 71, 81 are cut in a horizontal plane, the cross-sectional shape is approximately C-shaped and the back is open, but the side circulating water channels 71b, 81b are formed by setting the back so as to be in close contact with the outer peripheral wall of the washing and dehydrating tank 9. . Water inlets 71a, 81a are provided at the lower ends of the side circulating water passages 71b, 81b so as to face the outer peripheral side of the inner impeller 111a.

A discharge port 71c is formed on the upper portion of the circulating water channel cover 71, and the lint filter 72 is detachably attached to the discharge port 71c. The upper portion of the discharge port 71c is closed by a cylindrical wall surface 71g whose back surface is in close contact with the inner peripheral surface of the washing and dehydrating tank 9 and whose central axis is substantially horizontal. Further, support walls 71d for mounting the lint filter 72 are formed on the left and right of the discharge port 71c, and grooves 71e for positioning the lint filter 72 are provided on the inner surface of the support wall 71d.

The lint filter 72 is composed of a substantially semi-cylindrical swivel chamber 72 a whose central axis is substantially horizontal, side plates 74 closing its left and right surfaces, and a handle 76 . A convex rail 74a is formed on the outer surface of the side plate 74, and the lint filter 72 is attached to the circulating water channel cover 71 by holding the handle 76 and inserting the rail 74a into the groove 71e. The swirling chamber 72a has an opening 75 on the rear side and a substantially semicylindrical peripheral wall 73 on the front side. If the lint filter 72 is installed in the circulating water channel cover 71, the inner peripheral surface upper part of the surrounding wall 73 and the cylindrical wall surface 71g of the circulating water channel cover 71 are connected without step difference to form a cylindrical flow path, so that the flow from the side The flow direction of the washing water in the circulating water channel 71b is changed by the cylindrical wall surface 71g to form a stable swirl flow in the swirl chamber 72a. The peripheral wall 73 has a plurality of openings surrounded by a frame 73b, and a mesh filter 73a is provided on the inner peripheral surface of the peripheral wall 73 in close contact with no step. In addition, a gasket 77 is provided on the contact surface between the lint filter 72 and the circulating water channel cover 71 , so that almost all of the washing water from the side circulating water channel 71 b can be guided into the lint filter 72 .

The upper end of the circulating water channel cover 81 is closed, and a slit-shaped discharge port 81c opening in a substantially horizontal direction is formed on the upper part of the circulating water channel cover 81 .

If the pulsator disc 111 rotates, the inner impeller 111a becomes a centrifugal pump, and the pressure near the center of the bottom surface of the pulsator disc 111 decreases, thereby sucking the outer tank 10 from the through hole 9b on the bottom surface of the washing and dehydrating tank 9 and washing and dewatering. Wash water in the gap 91 between the sinks 9 (arrow 92). And, the washing water squeezed outward by the centrifugal force of the inner impeller 111a flows into the side circulating water channels 71b, 81b from the water inlets 71a, 81a, and flows upward in the side circulating water channels 71b, 81b (arrows 93, 96 ).

The washing water rising in the side circulating water channel 71b smoothly flows into the swirling chamber 72a along the cylindrical wall surface 71g at the upper end, and becomes a swirling flow (arrow 94 ) along the peripheral wall 73 with a substantially horizontal rotation axis. Most of the lint in the washing water gradually accumulates while swirling in the swirling chamber 72a due to the swirling flow, but is accumulated in a horizontally long cylindrical shape below the center of the swirling chamber 72a due to the influence of gravity. The washing water passes through the mesh filter 73a, the remaining lint is removed by the mesh filter 73a, and flows into the washing and dehydrating tank 9 (arrow 95). When the lint accumulated in the mesh filter 73a gradually increases, the lint is stripped by the fluid force of the swirling flow, and clogging of the lint filter 73a can be prevented, which is the same as in the first embodiment.

On the other hand, the washing water rising in the side circulating water channel 81b is sprayed into the vicinity of the center in the washing and dehydrating tank 9 from the slit-shaped discharge port 81c in a shower-like manner. Thereby, washing water can be sprayed uniformly to laundry, and cleaning efficiency can be improved.

The washing water in the washing and dehydrating tank 9 flows out to the gap between the outer tank 10 and the washing and dehydrating tank 9 through the through hole 9 a.

In the washing process, in order to make the laundry in the washing and dehydrating tank 9 move well and reduce the entanglement of the laundry, the pulsator disc 111 generally rotates forward, stops, reverses, and stops repeatedly, so that the waste from the lint filter 72 The washing water flowing out of the washing and dehydrating tank 9 from the discharge port 81c flows intermittently. When the washing water stops, the collected lint falls to the bottom of the peripheral wall 73 . When the washing water flows out, the lint rolls on the inner peripheral surface of the peripheral wall 73, and soon starts to rotate due to the swirling flow of the washing water, but at this time, the lint adhering to the mesh filter 73a is gradually involved. Therefore, intermittently flowing the washing water has the effect of further suppressing the increase of lint adhering to the mesh filter 73a.

When the rotation of the pulsator plate 111 stops, the wash water in the side circulating water channels 71b, 81b flows downward. At this time, the lint collected in the lint filter 72 has the following structure so that the lint collected in the lint filter 72 does not flow out to the side circulating water channel 71b, and the lint is easily removed. The vertical dimension of the discharge port 71c is set so that at least half of the lower side of the opening 75 of the swivel chamber 72a is closed by the wall surface 71h of the circulating water cover 71 when the lint filter is attached to the circulating water cover 71 . As described above, lint is accumulated on the lower side of the center of the swivel chamber 72a, so by closing the lower half of the opening 75 in advance, when the flow of washing water stops, the lint can be prevented from circulating to the side through the discharge port 71c. 71b Backflow.

If the lint filter 72 is removed from the circulating waterway cover 71 in order to remove the lint, the opening 75 will be opened larger, so that when the opening 75 is placed on the lower side and tapped lightly, the lint can be easily dropped off, thereby enabling I easily perform the clearing of the filter.

In addition, in Example 2 of this embodiment, the case where a lint filter and a shower-like discharge port are respectively provided and the installation position is in the upper part of the washing and dehydration tank 9 is shown, but a plurality of them may be respectively provided, and the installation positions may be different. It may also be installed near the center in the height direction of the washing and dehydrating tank 9 .

In Embodiment 1, a washing and drying machine was described, but a washing machine without a drying function may be used. In Embodiment 2, a washing machine was described, but a washing and drying machine may also be used.

Claims (3)

1. A washing machine comprising: an inner tank serving as a washing and dehydrating tank rotatably provided in an outer tank for storing washing water; a rotatable pulsator plate located at the bottom of the inner tank; and a washing water circulation path for circulating the washing water in the outer tank in the inner tank, characterized in that, A circulation pump and sprinkler nozzles are arranged in the washing water circulation path, A lint filter is provided in the middle of the washing water circulation path, The lint filter includes a substantially cylindrical swivel chamber with an upper opening and a center axis substantially vertical, a water inlet part connected to the substantially cylindrical surface of the swirl chamber substantially in a tangential direction, and a plug that closes the upper opening. An openable and closable cover includes an opening covered by a mesh filter on the substantially cylindrical surface and bottom surface of the swirl chamber and a part of the cover. 2. The washing machine according to claim 1, characterized in that, When the circulation pump is stopped, the circulation pump is stopped after the rotation of the circulation pump is maintained for a short time at a speed at which the height of the discharge water level difference of the circulation pump is substantially the same as the height of the lower surface of the lint filter. rotate. 3. A washing machine comprising: an inner tank serving as a washing and dehydrating tank rotatably provided in an outer tank storing washing water; and a rotatable pulsator plate located at the bottom of the inner tank; and a washing water circulation path for circulating the washing water in the outer tank in the inner tank, characterized in that, There is a side circulation path provided in the vertical direction on the inner peripheral surface of the inner tank to circulate the washing water by the rotation of the inner impeller radially arranged on the bottom surface of the pulsator disc; an outlet in the middle of the road; and the lint filter installed at the outlet, The lint filter includes a cylindrical swivel chamber with a rear opening, both ends closed, and a substantially horizontal central axis, and a water inlet portion in which one wall surface of the discharge port is connected to a peripheral wall surface of the swirl chamber in a substantially tangential direction. A part of the peripheral wall surface of the swirl chamber is provided with an opening covered by a mesh-shaped filter.