JPS6149999B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a washing machine that is provided with 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 pumping action of the back blade, A filter and a detergent container for storing detergent are provided, and the liquid sucked into the pump chamber is sent to the lint filter and the detergent container via separate water channels, respectively, when washing heavily soiled items. The liquid sucked into the pump chamber is first sent only to the lint filter to remove dirt components, and then the liquid is also sent to the detergent container to dissolve the detergent in the container and supply it to the washing tub. This allows for sufficient washing with a small amount of detergent.

This will be explained below based on the drawings. Reference numeral 1 denotes an outer tank, which houses a dewatering/washing tank 3 having a large number of dehydrating holes 2 in its peripheral wall. An opening 4 is provided at the bottom of the washing tub 3, and a rib 5 surrounding the opening 4 as shown in FIG. 2 is integrally suspended from the back side of the bottom of the washing tub. A rotor blade 7 attached to a rotor shaft 6 is disposed at a position surrounded by this rib 5.
A plurality of back blades 8 are formed on the back surface of the rotary blade 7. Reference numeral 9 denotes a washing tub board fixed to the drive shaft 10 of the washing tub 3 with bolts 11 and nuts 12, on which the rib 5 abuts and a boss (not shown) hanging from the bottom of the washing tub comes into contact. The board 9 and the washing tub 3 are connected by tightening screws to the bosses. Then, the pump chamber 1 is made up of the substrate 9 and the ribs 5.
3 is formed. A plurality of through holes 14 are provided in the substrate 9.
is provided, and when the rotary blade 7 rotates, the liquid between the outer tub 1 and the washing tub 3 (eventually flows into the washing tub 3) due to the pumping action of the back blade 8.
It becomes liquid inside. ) is sucked into the pump chamber 13 through the through hole 14 as shown by the arrow.

The rib 5 is not completely annular,
A pair of openings 15 and 16, which serve as discharge ports of the pump chamber 13, are formed at positions 180 degrees apart. Water channels 17 and 18 are formed on the outer bottom surface of the washing tub 3 and communicate with the intervening parts 15 and 16, respectively. The water channels 17, 18 are composed of horizontal parts 19, 20 integrally molded with the washing tub 3, and corner parts 23, 24 formed by covers 21, 22 attached to the outer periphery of the outer bottom surface of the washing tub. . The covers 21 and 22 have upper flange portions 25 and 26 fixed to the washing tub 3 with screws 27 and 28. Vertical grooves 29 and 30 are formed in the side wall of the washing tub 3, and the lower ends communicate with the water channels 17 and 18, respectively, and water pipes 31 and 32 are fitted into the vertical grooves 29 and 30, respectively. The lower ends of the water pipes 31 and 32 are connected to the water channels 17 and 18, respectively, and the upper ends are inserted into holding parts 34 and 35 formed at appropriate positions of the balance ring 33, respectively, and are held by covers 36 and 37 attached to the upper surface of the balance ring. The water pipes 31 and 32 are pressed downward to prevent them from coming out of the water channels 17 and 18. The covers 36 and 37 also serve as guides for redirecting the liquid discharged upward from the upper ends of the water pipes 31 and 32 downward.

That is, the liquid sucked into the pump chamber 13 flows through the water channel 17.
The water flows from the upper part of the washing tub into the washing tub through a first water supply channel 38 made up of the water pipe 31, cover 36, etc., and a second water supply channel 39 made up of the water channel 18, water pipe 32, cover 37, etc. Water is now being supplied. This first water supply channel 38 and second water supply channel 39
have the same shape and are arranged symmetrically with respect to the rotation center axis. 40 is a liquid sealed in the balance ring, and 41 is a plurality of protuberances formed at the bottom of the washing tub.

A lint filter 42 made of net and a detergent container 43 in which detergent is stored in advance are detachably attached to positions facing the tips of the first water channel and the second water channel, respectively. That is, the lint filter 42 has elastic pieces 4 at both ends of its mouth frame 44.
5 is formed, and a protrusion 46 provided on this elastic piece 45
is elastically engaged in a concave groove 47 formed in the balance ring 33, and this elastic piece 45 is placed on a mounting base 48 integrally formed with the balance ring, whereby the detergent container is detachably attached. 43
Similarly to this lint filter, the protrusions 50 of the elastic pieces 49 formed on both ends of the filter are elastically engaged in the grooves 51 formed on the balance ring 33, and the elastic pieces 49 are placed on the mounting table 52. installed.

Of the first water supply channel 38 and the second water supply channel 39,
A rib 53 as shown in FIG. 2 is vertically provided at the connecting portion of the second water channel with the pump chamber 13, that is, at the open portion 16 of the rib 5 until it comes into contact with the substrate 9. As shown in FIG. This rib 5
3, when the rotor blade 7 is rotating counterclockwise in FIG. 2, the pressure of the liquid sucked into the pump chamber 13 is not applied to the water channel 18. Water is not sent from the second water supply channel 39 to the detergent container 43. Water is sent to the detergent container 43 only when the rotor rotates clockwise. That is, the rib 53 is connected to the second water supply channel 39.
This serves as a direction regulating body that regulates the rotational direction of the rotor blade, which allows more water to be delivered. On the other hand, pressurized water enters the first water supply channel 38 in any direction of rotation of the rotor blades, and supplies the water to the lint filter 42 .

In FIG. 1, reference numeral 54 denotes a drive motor that rotates the rotary blades 7 and the washing tub 3, and 55 denotes a bearing case, which are attached to the bottom of the outer tub 1. The outer tank 1 is suspended from the upper part of the machine frame (not shown) in a vibration-proof manner.

FIG. 7 shows an electric circuit, 56 is a power plug,
57 is a water supply solenoid valve; 58 is a solenoid that operates a drain solenoid valve, a brake device to the drive shaft 10, and a clutch device that controls power transmission; when energized, the solenoid opens the drain solenoid valve and releases the brake. and engages the clutch. 59 is a capacitor for starting the drive motor 54, 60 is a top cover safety switch that opens when the top cover is opened, 61 detects the water level in the outer tank 1, and when the water level reaches a specified level, switches from normally closed contact 62 to normally open contact 63. water level switch,
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 54 is changed, and the rotation direction of the rotor blade 7 is switched.In this case, a
counterclockwise rotation when driven through contacts;
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, it is assumed that the detergent S is stored in the detergent container 43 in advance. Then, the water supply solenoid valve 57 is energized via the a contacts of the program switches 65 and 66, the normally closed contact 62 of the water level switch 61, and the program switch 68, water is supplied, and the specified water level is reached, and the water level switch 61 switches to the normally open contact 63. When switched to , the water supply is stopped and the drive motor 54 is energized via the a contact point 70 of the program switch 67 to rotate the rotor blade 7 . In this case, the rotor blade is continuously rotated counterclockwise by the a contact point of the switch 70 regardless of the reversing switch 71.

As a result, the liquid sucked into the pump chamber 13 does not go to the second water supply channel 39 due to the action of the rib 53 described above, but is entirely sent to the lint filter 42 through the first water supply channel 38. Therefore, water is not sent to the detergent container 43 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 42.

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 54 is energized via the reversing switch 71, and the rotor blade 7 is energized. The rotation direction can be alternately switched between left and right. Therefore, when the rotor rotates clockwise, the pump chamber 13
The liquid sucked into the detergent container 43 is also sent to the second water supply channel 39, where the detergent S therein is dissolved and supplied to the washing tub as shown by the arrow. By the time this detergent is supplied, the solid components of the water-soluble dirt have already been removed to some extent by the lint filter 42, so there is a margin in the cleaning ability of the detergent, and it is possible to wash the clothes sufficiently with a small amount of detergent. Become. It goes without saying that during the washing process, liquid is constantly being sent to the first water supply channel 38, and lint and the like are removed by the lint filter 42.

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 3 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 54, 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 2 are used as a washing tub.
It also serves as a dehydration tank with a dehydration hole 2.
It can also be applied to those without a washing machine or to 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, a washing machine is provided with a pump chamber formed 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 transferred to the washing tub. A first water supply channel that supplies water to the lint filter mounted on the top and a second water supply channel that supplies water to the detergent container are provided, and a direction regulating body 53 allows water to be supplied to the second water supply channel only when the rotor is rotating in a predetermined direction. In order to prevent liquid from being pumped into the pump chamber, the rotor blades are rotated only in this predetermined direction during the pre-washing process, which is provided before the washing process, so that the liquid sucked into the pump chamber during the pre-washing process is first sent The detergent is sent to the lint filter through the water channel, where the solid components of water-soluble dirt contained in the laundry are removed by the lint filter, and then, only when the washing process begins, is the liquid sent to the second water channel to remove the detergent. Since the detergent is dissolved and supplied to the washing tub, the washing capacity of the detergent can be increased, and even a small amount of detergent can be used for sufficient washing. According to the present invention, switching between the first water supply channel and the second water supply channel is not performed by a separate valve device, but by switching the rotational direction of the rotor blade, so that the program switch can be switched in terms of the circuit. 1
By simply increasing the number of pixels, various effects can be achieved, such as preventing the configuration from becoming complicated.

In addition, if the first water supply channel and the second water supply channel are provided symmetrically with respect to the rotation center axis as in this embodiment, the balance of the washing tub 3 will be improved.

[Brief explanation of the drawing]

The drawings show a washing machine according to the present invention, in which FIG. 1 is an internal vertical cross-sectional view, FIG. 2 is a cross-sectional view taken along lines taken from FIG. 1, and FIG.
5 and 6 are perspective views of the lint filter and detergent container, respectively. FIG. 7 is an electric circuit diagram, and FIG. is a program diagram of the program timer, and FIG. 9 is a program diagram of another embodiment. 3...Washing tub, 7...Rotary blade, 8...Back blade,
13... Pump room, 42... Lint filter,
43... Detergent container, 38... First water supply channel, 39...
...Second water supply channel, 53...Rib (direction regulating body).

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 transferred to a lint attached to the top of the washing tub. A first water supply channel and a second water supply channel are provided for supplying water to a filter and a detergent container, respectively, and a pump is provided at a connection portion of the second water supply channel with the pump chamber to send a pump to the second water supply channel when the rotary blade rotates in a predetermined direction. A direction regulating body is installed to prevent pressure water from being applied due to the action, and is used for washing, draining,
A washing machine comprising a program timer that automatically controls a series of processes such as rinsing, and a pre-washing process in which the rotary blades are rotated only in the predetermined direction before the washing process.