JPS59232581A - Household washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a domestic washing machine.

Conventionally, home washing machines have been equipped with motor-driven blades in the washing tub, and the rotation of the blades generates a water flow that washes the laundry with detergent water to remove dirt. This method has the problem that the laundry is easily damaged because the washing water gets caught in the laundry itself and gets caught in other laundry due to the whirlpool of the washing water. As shown in the figure, a pump 2 pumps pressurized soapy water bubbles from the bottom of the washing tub 1.
There are some products that remove dirt from the surface of the laundry by the bubbles rising between the laundry 30.

This method does not damage the laundry and does not require the use of petroleum-based detergents when heating the soapy water with a heater, but the laundry does not move in the tub when the fabric is poorly breathable and there is a large amount of laundry. Therefore, there was a problem with uneven dirt removal. Further, the washing capacity of this method was equal to or lower than that of the above-mentioned blade rotation method, and there remained a problem in terms of efficiency.

An object of the present invention is to provide a household washer that eliminates uneven dirt removal without damaging laundry and enables efficient washing in a short time.

FIG. 2 is a configuration diagram showing an embodiment of the present invention.

Washing tub 4 allows pressurization inside the tub. detergent and water.

A lid 6 for loading laundry 5 has an airtight structure. For example, as shown in FIG. 3, the lid 6 is opened and closed by a hinge 7,
A sealing rubber seal 8 is provided around the entire circumference of the open end surface of the tank 4, and the other end of the lid 6 is locked with a palatine lock 9. - Returning to FIG. 2, the bottom of the washing tub 4 is communicated with the pressurized air supply pipe 10 at its corner. It's a trench, at the bottom of the washing tub 4 there is a 'rlQ' in the farthest corner from the communication part of the pipe
It is communicated with a drain pipe 12 that has a drain cock 11 of the RLRB installed therein. This drain cock 11 is made airtight and the tank 4
Pressurized air inside the tank 4 is prevented from leaking from the cock 1 (S.
The openings 10A and 12A in the tank are covered with wire meshes 13A and 13B''C each having a small diameter hole, and the wire mesh 13A covers the opening 10A of the pipe 10. The pressurized air blowout has a blowing function using small-diameter air bubbles, the opening 12 A is covered with a wire mesh 13 B is a pipe for washing IA items 5 and fiber waste when draining the washing water in the tank] 2
This prevents the drain cock 11 from being clogged.

The other end of the pressurized air supply pipe 10 is connected to the lower QC of the pressurized air storage tank 5 through an electric control valve 14. Further, the other end of the supply pipe 10 is communicated with a pipe 16 before the control valve 14 . Pipe 16 1+1! , the end is connected to the compression pump 170 power [1 pressure air Suita [7'15]
Ru.

The tank 15 is connected to the pipe 10 at its lowest end i'-
11) completely prevents the washing water from flowing back into the tank.

When the control valve 14 is in an open state, the amount of pressurized air blown into the tank 4 at a time can be made to be equal to the volume of the tank J5. Pressure 1 pump 171-j: A reciprocating pump using a piston or a rotary vane type pump is used, and is continuously driven by a motor 18.
+], and the pressurized air inlet is communicated with the pressure release part 19 of the tank 4.

The pressure release part 19 communicates with the inside of the tank 4 via a pressure release valve (pressure control valve) 20 provided on the side of the tank 4 at a level 14 higher than the upper limit of the washing water in the tank 4. A hole 19A is provided at the top for venting air. During normal washing, the pressure relief valve 20 completely partitions the tub 4 and the waste juice section 19, and is driven at regular intervals to release the pressurized air in the vent 4 to the pressure relief section 19. This pressure relief part 9L is partially (r:j, circulated as air taken into the pump 17, and released from the air vent hole 19A. 7j (inside is L・)
I have a v)1-hi as a buffer for air (muffler). With a relatively large valley, the air pressure is 11 days, and A is made small, and the discharge distance is low υ.
It's so hot.

The pressure relief valve 2 () is shown as (-f, 7■<suij!i in Fig. 4).
Tora P is thrown, and it is set to '1. f','! 74, but 1μ+1 end of the 71tE hole housing 2
1 of 7 lunge F+% 2L A is airtight rubber gasket 2
The outer periphery of the outer periphery of the position protruding to the νth 2) and 1 (inner side of the former Shoto 19) of At14 through the pressure relief hole and i; l (At 21B, the nut 23 and washer 24 are used to connect the 1!4V to the center part of the housing 21.
It's pierced, 1 (Gum 021 G has 25 rubber rings on the gauge part and has a 1++1 connection with the valve body 2o, Lee Jito 2] B's tip and surrounding VC blade r:" Equipped with a discharge slot 21DK for the release air from 2IC.Valve body 215V
, 1 is supported by a sliding pin 27A of a plunger 27 attached to the tip of the valve housing 21, and the plunger 27
A suppression spring 28 is interposed between the end face of the valve and the valve seat to be pressed toward the valve seat. The plunger 27 is its plunger coil 27
By energizing B, the valve body 26 is retracted through the sliding pin 27 A', and the valve is opened, that is, the pressurized air in the tank 4 is released to the pressure release part 19 side. The pressing force of the pressing spring 28 is designed to act as a safety valve against a failure on the plunger side.

Returning to FIG. 2, inside the tank 4 is a valve inlet 21 of a pressure relief valve 20.
A wire mesh 28 is provided surrounding C to prevent part of the laundry 5 from clogging the valve inlet when loading the laundry or releasing pressure.

A washing water supply pipe 29 is airtightly installed in the upper part of the tank 4, and a hose 31 is connected to the pipe 29 with an electric cock 30 interposed outside the tank 4, and the other end of the hose 31 is connected to /~ It is connected to a water faucet (not shown). Therefore, by keeping the water faucet open and opening/closing the cock 30, water can be supplied into the tank. Water supply (A small piece of a contact plate 32 is provided opposite the water supply direction in the tank of the eve 29, and the structure is such that the supplied water collides with the contact plate 32 and is sprayed all over the inside of the tank 4.

In this structure, the drain cock 11 is closed and the washcloth 5, water, and detergent are put into the washing tub 4 at a position lower than the valve opening of the pressure release valve 20, and the motor 18 is activated by turning on the manual switch or turning on the timer switch to start washing. This drives the compression pump 17 to feed pressurized air into the tank 4, and drives the plunger 27 at regular intervals to cause the pressure release valve 20 to release the pressurized air in the tank. In this washing operation, the pressurized air generated from the pump 17 is
As shown in the figure, during the period T1 when the valve 20 is closed, the pressure P
. The pressure inside the tank 4 increases from B6 to P during the period T2 when the pressure relief valve 20 is opened. Pressurized air is blown into the tank 4 from the pipe 10 side. Pressure P at the time of pressure release. is determined by the opening time of the valve 20, but the time is adjusted so that the pressure drops to almost normal pressure, and the pressure PS during pressurization is determined taking into account the safety of the tank 4, and is set to 1.6, which is the same level as that of a household pressure cooker, for example. The pressure is set to about 2 atm. In addition, in FIG. 5, the waveform of the broken gland corresponds to the case where the pressure release time is set to be long.

As described above, in the washing operation, pressurization and pressure release are repeated at regular intervals in the washing tub 4, and air bubbles are blown up from the bottom corners when the pressure is released. As a result, as shown in FIG. 6, pressure changes within the washing tub 4 cause contraction and expansion 51 ( Wake up large and small bubbles B, , B
The shrinkage of 2, the tension of r#3 is the washing time when detergent is dissolved between each fiber A.
4 Water flow is generated to promote the decomposition of the dirt, and the contraction and expansion of the air bubbles B3 promotes the peeling off of the dirt C. Furthermore, the pressurized air bubbles are blown into the washing 4"J4 from the bottom corner to efficiently move the washed i!i!G items appropriately and the dirt 7"1. To eliminate unevenness in dropping and to fully promote the supply of air bubbles into the laundry.

The washing operation based on repeated pressure changes and air bubble blowing requires a higher internal water flow and a higher amount of laundry agitation when the laundry is loaded, compared to the conventional method shown in Figure 1, which generates air bubbles only on the surface of the laundry material. This results in efficient laundry (short time, 4 washes and high power). Since the water flow is blown up by the air bubbles and the laundry is agitated, the laundry cannot be washed away due to the whirlpool, which is caused by the whirlpool like in a general blade-rotating washing machine. No more damaging things.

By keeping the control valve 14 open at all times for blowing out pressurized air, the amount of blowout per time is increased by an amount equivalent to the volume of the tank 15. Pressure relief valve 20 is installed to compensate for changes in Shiba Inu pressure inside the tank.
By switching the pressure release cycle, it is possible to switch between a washing operation with a short pressure change interval and a small amount of airflow, and a washing operation with a short pressure change interval and a large amount of airflow. It enables automatic switching between rinsing and washing according to the size of the clothes.

Then, it is impregnated into the laundry during rinsing.

In order to facilitate the removal of the detergent water, after draining the water in the tank 4, the cock 30 is fully opened and the pump 17 is operated while sprinkling water into the tank 4, and the drain cock 11 is left open. , watering the laundry and washing it? The process of blowing out the impregnated water of the G substance to the drain cock side using the internal pressure of the tank 4 is made possible to Oe. By linking the stiff rinsing and its pretreatment to the washing operation described above, it is possible to perform a batch washing operation, that is, automatic washing.

In addition, in the embodiment, the pressure relief control of the pressure relief valve 2o at fixed time intervals can be performed using a timer for setting the wash time to obtain a periodic signal, and a pressure spring can be used instead of an electric one. It is also possible to appropriately adjust the pressing force of 28 to achieve natural pressure release. Furthermore, the same effect can be obtained by appropriately changing the design to a control device that releases pressure intermittently, such as a gear mechanism that operates a cam on the valve body 26 when the motor 18 reaches a certain rotation speed, Control valve 14 is omitted and pipe 1
A configuration in which a valve that opens and closes complementary to the pressure relief valve 20 is provided in the middle of the pressure relief valve 20 to alternately switch between pressurization and pressure relief in the tank also falls within the scope of the present invention.

Further, control of each cock of the rinsing basin and sequence control of each cock, motor, etc. of the automatic washing basin are also realized using the periodic signal of the timer.

The safety mechanism that removes the pressure inside the barrel 4 when the lid 6 is opened after the washing operation is completed is to stop the operation of the motor 18 in response to the operation completion signal of the washing time setting timer and to open the pressure relief valve 2.
The control means for forcibly opening the pressure relief valve 20 or other pressure relief valves for unlocking the lid 6 and the control mechanism K for forcibly opening the pressure relief valve 20 or other pressure relief valves can be designed as appropriate, such as a combination of the two.

As described above, according to the present invention, air bubbles contained in laundry are compressed by pressurizing and releasing pressure in the washing tub in a circular manner.
Dirt is removed by the expansion action, and air bubbles are blown up from the bottom to agitate the laundry inside the tub, resulting in less uneven dirt removal and more efficient washing without damaging the laundry.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram showing a conventional washing machine, Figure 2 is a configuration diagram showing an embodiment of the present invention, Figure 3 is a configuration diagram showing an embodiment of the lid 6 in Figure 2, and Figure 4. 2 is a cross-sectional view showing one embodiment of the discharge valve in FIG. 2, FIG. 5 is a pressure waveform diagram in the tank to explain the washing operation in FIG. 2, and FIG. This is a diagram for explaining the action.
4... Washing tub, 6... Lid, 10... Pressurized air supply no. (eve, 11... Drain cock, 13.28... Wire mesh, ]4... Control valve, ]5 ...Tank, 17...
Pressure pump, J8...Motor, No...Pressure relief part, 20
...Pressure relief valve. Figure 1 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] a washing tub that holds laundry, detergent, and water and is airtightly covered; a pump that supplies pressurized air from the bottom of the washing tub;
A domestic washing machine characterized by comprising a pressure release means for periodically releasing the pressure of the pressurized air above the water surface in the washing paddle.