JPS6229075B2 - - Google Patents

Description

Detailed Description of the Invention The present invention provides a pump chamber on the back side of the rotary blade at the bottom of the washing tub, which sucks the liquid in the washing tub by the pump action of the back blade, and the liquid sucked into this pump chamber is passed through a water supply channel. Regarding a washing machine that discharges water into the washing tub from the upper part of the washing tub, and improves the cleaning effect by complicating the water flow in the washing tub with this discharged water flow, the water supply channel is divided into two, and the water is discharged from one of the water supply channels. The liquid released from the other water supply channel is used to sufficiently dissolve or dilute the detergent so that it can be supplied to the washing tub. This prevents the product from being damaged by bleach, etc. When washing heavily soiled items, the liquid is released from only one water supply channel to remove the dirt components through a lint filter, and then the liquid is released from the other water supply channel to dissolve the detergent and supply it to the washing tub. This allows the detergent to fully demonstrate its capabilities.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on figures showing one embodiment. Reference numeral 1 denotes a washing tub which also serves as a dehydration tub, and a rotary blade 2 is disposed at the bottom of the tub, and a balance ring 3 is attached to the edge of the tub. The balance ring 3 is formed by welding the opening edges of two upper and lower annular groove bodies 4 and 5. The washing tub 1 is attached to a washing tub base plate 6 with screws 7, and this base plate 6 is fixed to a washing tub shaft 8. The peripheral wall of the washing tub 1 has a large number of dewatering holes 9, and the washing tub 1 is rotated at a centrifugal speed during dewatering. The rotary blade 2 is fixed to a blade shaft 10 with a screw 11, and the blade shaft 10 is pivotally supported within the washing tub shaft 8.
Reference numeral 12 denotes an outer tank, and a drive motor 13 for rotating the wing shaft 10 and the washing tub shaft 8, a bearing case 14, etc. are attached to the bottom of the outer tank, and the outer tank 12 is suspended from the upper part of the machine frame (not shown) in a vibration-proof manner. has been done.

A radial back blade 15 is integrally molded on the back side of the rotor blade 2, and a pump chamber 18 is formed on the back side of the rotor blade by the washing tub substrate 6, the washing tub bottom recess 16, and the peripheral wall 17 of the recess 16. There is. A plurality of suction ports 19 to the pump chamber 18 are bored in the washing tub board 6,
The discharge port 20 of the pump chamber 18 is formed by opening the peripheral wall 17 in a V-shape as shown in FIG. A groove 21 is formed from the bottom of the washing tub 1 to the upper end of the side wall in communication with the discharge port 20, and a channel cover 22 is fitted into the groove 21 to form a water supply channel 23.

The water supply channel 23 is divided into a first water channel 25 and a second water channel 26 on the left and right by a partition wall 24 integrally projecting from the back surface of the water channel cover 22, as shown in FIG. A first discharge duct 27 inclined diagonally upward toward the inside is integrally molded on the upper part of the water channel cover 22 and serves as a discharge port for the first water water channel 25 and also serves as a discharge port for the second water water channel 26. A second discharge duct 28 that bends horizontally inward and then bends upward to open is integrally molded. Both of these discharge ducts 27 and 28 are disposed in a first recess 29 and a second recess 30, respectively, which are recessed inner surfaces of the balance ring 3. Both recesses 29 and 30 are separated by a partition wall 31. A bag-shaped lint filter 32 is attached facing the tip of the first discharge duct 27 . Lint filter 32
, the lower end locking piece 35 of the frame body 34 with the lip 33 attached is attached to the lower concave groove body 5 of the balance ring in the first place.
An elastic claw 37, which is integrally molded to bridge the front surface of the recess 29 and which is protruded from the upper end of the frame 34, covers the first recess 29 from the upper surface of the upper groove body 4 of the balance ring. Projecting ceiling board 3
It is removably attached by locking it to the tip of 8. The liquid discharged from the first discharge duct 27 is discharged into the washing tub 1 through the lint filter 32 as indicated by the arrow in FIG.

On the other hand, on the front side of the second discharge duct 28 in the second recess 30, a container 39 for storing detergent and the like in advance is removably installed. This container 39 is placed on a pair of left and right stands 40, 40 integrally molded from the lower groove body 5, and a pair of left and right locking steps 41, 41 integrally molded on the lower groove body. Elastic claws 42 protruding from both left and right walls of the container 39,
42 are installed in an elastic manner. A ceiling plate 43 that covers the second recess 30 from the upper surface of the upper groove body 4
The liquid discharged from the second discharge duct 28 is guided into the container 39 by the ceiling plate 43 and the guide wall 44 hanging from the ceiling plate 43 as shown by the arrow in FIG. The detergent S inside is dissolved or diluted and allowed to overflow from the container into the washing tub.

To explain how to install the water channel cover 22,
As is clear from FIG. 3, on the front side of both side surfaces of the groove 21, there are locking ribs 4 extending from the top to the middle.
5, 46 are provided in a protruding manner, and in correspondence with the locking ribs 45, 46, locking protrusions 47, 48 are provided in a protruding manner on both side surfaces of the water channel cover 22. The height of the locking protrusion 48 is reduced,
The locking protrusion 47 is fitted into the locking rib 45, the flat part 49 of the water channel cover 22 is bent, and the other locking protrusion 48 is fitted into the locking rib 46, and then the flat part 4 is bent.
The upper part of the water channel cover is attached by fixing the projecting piece 50 protruding from 9 to the washing tub 1 with screws 51, and the tongue piece 52 integrally extended from the lower end of the water channel cover is screwed to the bottom of the washing tub. It is attached by fastening 53.

As shown in FIG.
6 is bent so as to be narrow, and as a result, the discharge pressure from the pump chamber 18 is applied to the first water supply channel 25 and the discharge liquid is sent to the first water supply channel 25 regardless of which direction the rotor blade 2 rotates. However, when the rotor blade 2 rotates to the left in FIG. 3, no discharge pressure is applied and no liquid is sent to the second water supply channel 26, and liquid is sent only when the rotor blade 2 rotates to the right. That is, the bent end portion 56 serves as a regulating body that prevents discharge water from entering the second water supply channel 26 from the pump chamber.

FIG. 7 shows an electric circuit, 55 is a power plug,
57 is a water supply solenoid valve, and 58 is a solenoid that operates a drain solenoid valve, a brake device to the washing tub shaft 8, and a clutch device that controls power transmission.When energized, the solenoid opens the drain solenoid valve and applies the brake. This is to release the clutch and engage the clutch. 59 is a capacitor for starting the drive motor 13, 60 is a top cover safety switch that opens when the top cover is opened, and 61 is an outer tank 1.
a water level switch that detects the water level of 2 and switches from a normally closed contact 62 to a normally open contact 63 when it reaches a specified water level;
64 is a timer motor that drives the program timer; 65 to 70 are program switches that are opened and closed according to the program shown in FIG. 8 by a group of cams rotated by the timer motor 64; 71 is also a cam that is rotated by the timer motor;
This is a reversing switch that alternately switches to both a and b contacts. That is, the rotation direction of the drive motor 13 is changed, and the rotation direction of the rotor blade 2 is switched.In this case, a
If it is driven through a contact point, it will rotate counterclockwise in Figure 3.
When driven through the b contact, it rotates clockwise.

Next, the operation will be explained. When washing heavily soiled items, even if you suddenly add detergent, the laundry will still be so dirty that it will not be able to fully demonstrate its cleaning ability. Therefore, in the present invention, a pre-washing process is provided before the washing process. When washing heavily soiled items, set the program timer to the prewash step. Of course, the detergent S is stored in the container 39 in advance. Then, program switches 65 and 66 a
The water supply solenoid valve 57 is excited through the normally closed contact 62 of the water level switch 61 and the program switch 68, water is supplied, and when the specified water level H is reached and the water level switch 61 is switched to the normally open contact 63, the water supply is stopped. At the same time, the drive motor 13 is energized through the a contact point of the program switch 67 and the a contact point of the program switch 70 to rotate the rotor blade 2. In this case, the rotor blade is continuously rotated to the left in FIG. 3 by the a contact point of the switch 70, regardless of the reversing switch 71.

As a result, due to the pumping action of the back blade 15, the first
The liquid between the washing tub 1 and the outer tub 12 that is sucked into the pump chamber 18 through the suction port 19 as shown by the arrow in the figure (which eventually becomes the liquid inside the washing tub) is transferred to the second pump by the action of the above-mentioned regulator 56. The water does not go to the water channel 26, but all of the water is sent to the lint filter 32 from the first discharge duct 27 through the first water supply channel 25. Therefore, water is not sent to the container 39 and detergent is not supplied to the washing tub, but instead, solid components of water-soluble dirt contained in the laundry are removed by the lint filter 32.

When this two-minute pre-washing process is completed, the process moves on to the washing process. During this washing process, the program switch 70 is switched to the b contact, so the drive motor 13 is energized via the reversing switch 71, and the rotor blades 2
The direction of rotation is alternately switched between left and right. Therefore, when the rotary blade rotates to the right in FIG. Dissolve or dilute the detergent S and let it overflow from the top of the container as shown by the arrow and supply it to the washing tub.

When this detergent is supplied, water is supplied to the inside of the washing tub 1 up to a specified water level, and a rotating water flow is generated by the rotation of the rotary blades 2. Therefore, the detergent in the container 39 that overflows into the washing tub is removed by this rotating water flow. The powder is then further dissolved or diluted so that powdered detergent or highly concentrated detergent does not damage the laundry by causing fading or fading.

Furthermore, since the solid components of the water-soluble dirt have been removed to some extent by the lint filter 32, the cleaning ability of the detergent can be increased, making it possible to wash the clothes sufficiently even with a small amount of detergent. It goes without saying that during the washing process, the liquid is constantly being sent to the first water supply channel 25, and the lint filter 32 removes lint and the like.

When the washing process is completed, drainage, rinsing, and the final dehydration process are automatically performed according to the program shown in FIG.

The above description has been made regarding the case of washing heavily soiled items, but if the soiling is not so severe, the program timer may be set in the washing process to supply detergent to the washing tub 1 from the beginning.

FIG. 9 shows another embodiment of the program, in which when the pre-washing process is finished, the program switch 67 is
The system switches to the contact point to cut off the power to the drive motor 13, and at the same time, energizes the solenoid 58 via the B contact point of the switch 66, and opens the drain solenoid valve to temporarily drain the water.The washing process is a new process. This was done by supplying water.

In the above embodiment, a large number of dehydration holes 9 are used as the washing tub.
Although the present invention is designed to double as a dehydration tank having a dehydration hole, it can also be applied to a type without a dehydration hole or a simple washing tank. In this case, if a through hole is provided in the center of the rotary blade, the liquid in the washing tub can be easily sucked into the pump chamber.

As described above, according to the present invention, the washing machine improves the washing effect by discharging the liquid in the washing tub from the upper part of the washing tub into the tub through the water supply channel through the pumping action of the back blade of the rotary blade. split into two,
The liquid discharged from one water supply channel 25 (first water supply channel) is passed through a lint filter 32 to capture lint in the liquid, and the other water supply channel 26
Since the liquid discharged from the second water supply channel is sent into the container 39 in which detergent is stored in advance, the detergent is dissolved or diluted in the container and supplied to the washing tub. Since there is a rotating water flow inside the container, the detergent in the container supplied to the washing tub is further dissolved or diluted by this rotating water flow, so that the laundry will not be damaged by the detergent. can. The water channel that sends liquid to the lint filter and container is formed by dividing one water channel into two, so it is easy to assemble, unlike having to send liquid to the lint filter and container using completely separate water channels. It can also be done at a low cost.

Furthermore, according to the present invention, the direction regulating body 56 prevents liquid from being sent into the second water supply channel that supplies water to the container when the rotary blade rotates in a predetermined direction, and during the pre-washing step provided before the washing step. Since the rotor blades are made to rotate only in this predetermined direction, during the pre-washing process, the liquid sucked into the pump chamber is first sent to the lint filter through the first water supply channel to remove water-soluble dirt contained in the laundry. It is only when the components are removed by a lint filter and then proceeded to the washing process that the second
Since the liquid is also sent to the water supply channel, where the detergent is dissolved and then supplied to the washing tub, the washing capacity of the detergent can be increased, allowing for sufficient washing with a small amount of detergent. Also second
If the partition wall 24 that divides the water supply channel into two parts is used as a regulating body for regulating the water supply to the water supply channel, and the pump chamber side is bent, the structure can be made very simple. Moreover, it can be done at low cost.

[Brief explanation of the drawing]

The drawings show a washing machine of the present invention, FIG. 1 is an internal vertical sectional view, FIG. 2 is a sectional view taken along the line - in FIGS. 1 and 4, and FIG. 3 is taken along the line - in FIG. 1. 4 is a sectional view taken along line - in FIG. 2, FIG. 5 is a perspective view of the water channel cover, and FIG. 6 is a perspective view of the main parts of the balance ring with the lint filter and container removed. , FIG. 7 is an electric circuit, FIG. 8 is a program diagram of a program timer, and FIG. 9 is a program diagram of another embodiment. 1...Washing tub, 2...Rotary blade, 15...Back blade, 18
...Pump chamber, 23... Water supply channel, 25... First water supply channel (one water supply channel), 26... Second water supply channel (other water supply channel), 32... Lint filter, 39... Container, 5
6... Regulatory body, 24... Partition wall.

Claims (1)

[Claims] 1 A pump chamber is provided on the back side of the rotary blade at the bottom of the washing tub, which sucks the liquid in the washing tub by the pumping action of the back blade, and the liquid sucked into the pump chamber is discharged into the washing tub from the top of the washing tub. In a device equipped with a water supply channel, the water supply channel is divided into two by a partition wall, and the liquid discharged from one water supply channel is sent to a lint filter, and the liquid discharged from the other water supply channel is used to store detergent, etc. A regulating body is provided at the pump chamber side end of the other water supply channel to prevent water discharged from the pump chamber from entering the other water supply channel when the rotary blade rotates in a predetermined direction. A washing machine comprising a program timer that automatically controls a series of processes such as washing, draining, and rinsing, and a prewashing process in which the rotary blades are rotated only in the predetermined direction before the washing process.