JP2007167278A - Drum-type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum-type washing machine with good washing capability and designed to reduce time and save washing water. <P>SOLUTION: The invention is provided with a water receiving tank 2 which contains a rotary drum 3 in a rotatable manner, a water supplying means 7 and a detergent dissolving means 11, as well as a water supply process for supplying high concentration detergent from the detergent dissolving means 11 onto the laundry from above the rotary drum 3. A control means 19 supplies water up to a low water level near the bottom section of the rotary drum 3 and reduction of washing time and saving of water can be achieved by conducting the washing process with high concentration of detergent by the rotation of the rotary drum. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine that performs washing, rinsing, and dewatering steps in a rotating drum having a rotation center axis in a substantially horizontal direction or a substantially inclined direction.

  A conventional structure example of a drum type washing machine will be described with reference to FIG.

  As shown in the figure, in a washing machine main body 67 of a drum type washing machine, a water receiving tub 63 supported by a suspension structure and a water receiving tub 63 are rotatably supported inside the water receiving tub 63, and a large number of through holes 62 are provided on the peripheral surface. A rotating drum 61 in which is formed is disposed. The rotary drum 61 is rotationally driven by a drive motor 65. By opening a door body 64 that can be freely opened and closed on the front side of the washing machine main body 67, the laundry can be taken in and out of the rotary drum 61 through the front opening of the water receiving tub 63 and the front opening of the rotary drum 61. It is configured.

  When the door body 64 is opened, laundry is put into the rotating drum 61, and detergent is added to start the operation, water is supplied into the water receiving tank 63, and the supplied water passes through the through holes 62 and enters the rotating drum 61. Also invade. When the rotary drum 61 is rotationally driven by the drive motor 65 at a predetermined rotational speed, the laundry accommodated in the rotary drum 61 is hooked on the stirring protrusion 66 provided on the inner peripheral surface of the rotary drum 61 and lifted in the rotational direction. Since it falls from an appropriate height, the washing is applied with the action of tapping and washing.

  After this washing process, the dirty washing water is drained, and the rinsing process is performed using newly supplied water. When the rinsing process is completed, the rotating drum 61 is rotated at a high speed and the dehydration process is performed by centrifugal force. The These steps are automatically executed based on a predetermined control procedure.

The above configuration is a general configuration of a drum-type washing machine. In addition to the above configuration, in order to improve the cleaning performance, water supplied into the outer tub is pumped up and supplied into the rotating drum, and water is supplied to the laundry. In some cases, the washing power is increased by sufficiently supplying water (for example, see Patent Document 1).
JP 09-215893 A

  However, in such a conventional drum type washing machine, since the water supply means is performed from the water receiving tub 63, a waste detergent solution that does not penetrate into the laundry is generated, or the detergent introduced into the rotating drum 61 is transparent. There is a problem that it takes time to ensure a certain cleaning performance because it takes time to flow out from the hole 62 into the water receiving tub 63 and the entire laundry sufficiently contains the detergent solution.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a drum type washing machine that is excellent in cleaning performance, shortens time and saves water, and performs washing at a high concentration.

  In order to achieve the above object, the present invention provides a water receiving tank elastically supported in a washing machine body and having a rotating drum for clothes stirring rotatably supported therein, and water supply in the rotating drum and the water receiving tank. The water supply means for supplying water to the laundry directly from the upper part of the rotating drum with a high-concentration detergent solution through the detergent dissolving means, and the washing machine controlled to execute a high-concentration washing process by the rotation of the rotating drum It is.

  As a result, the detergent liquid discharged from the water supply means directly hits the laundry, so that a high-concentration detergent liquid can be quickly and uniformly contained in the entire laundry, and can be washed at an early stage. The cleaning performance is improved and the time can be shortened.

  The drum type washing machine of the present invention can improve the washing performance and shorten the washing time by penetrating the entire laundry with a detergent solution having a concentration higher than usual and increasing the penetration speed.

  A first invention includes a rotating drum having a rotation center axis in a substantially horizontal direction or a substantially inclined direction, a water receiving tub that is elastically supported by a washing machine body and encloses the rotating drum, and a driving unit that rotationally drives the rotating drum. Control for controlling the water supply means for supplying water into the rotating drum, the detergent dissolving means for storing the detergent and dissolving the detergent as the water is supplied from the water supply means, the drive means, the water supply means, the detergent dissolving means, etc. And a control unit configured to supply a predetermined amount of high-concentration detergent solution discharged from the detergent dissolving unit directly to the laundry, and to lift upward by rotation of the rotating drum at least after the end of the water supply step. And a high-concentration detergent washing process in which the laundry is rotated at a predetermined rotational speed that exhibits a behavior of falling from a height position where the weight of the laundry is superior.

  As a result, the detergent liquid discharged from the water supply means directly hits the laundry, so that a high-concentration detergent liquid can be quickly and uniformly contained in the entire laundry, and can be washed at an early stage. The washing performance is improved and the washing time can be shortened.

  According to a second invention, in the first invention, the water level detection means for detecting the water level in the water receiving tank is provided, and the control means is configured such that the water level detection means is lower than the lowermost end portion of the rotating drum in the water supply stroke. When a predetermined water level or a predetermined water level in the vicinity of the lowermost end of the rotating drum is detected, the water supply process is terminated, and by washing with almost no detergent liquid in the water receiving tank, The amount of water used can be saved.

  According to a third invention, in the first or second invention, the control means rotates the rotating drum at a rotation speed equal to or lower than a predetermined rotation speed in the water supply stroke. The detergent liquid can be quickly and uniformly contained in the entire laundry.

  According to a fourth aspect of the invention, there is provided warm air supply means for sending warm air into the rotary drum, and the control means drives the hot air supply means during at least one of the water supply stroke or the high concentration washing stroke. In this case, by increasing the temperature of the laundry and the detergent liquid, the detergent liquid can be activated to improve the cleaning performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a drum-type washing machine according to Embodiment 1 of the present invention.

  In FIG. 1, a water receiving tub 2 is supported in an anti-vibration state in a slanting manner in a washing machine main body 1 of a drum type washing machine, and is formed in a bottomed cylindrical shape in the water receiving tub 2. The rotating drum 3 is included in a rotatable manner. On the inner peripheral surface of the rotating drum 3, stirring protrusions 4 are provided at a plurality of positions. The rotating drum 3 is driven to rotate by a motor 5, which is a driving means attached to the back surface of the water receiving tank 2, and rotates. The speed and direction of rotation are variably controlled. On the front side of the washing machine body 1, a door body 6 that can be opened and closed is provided.

  One end of a first water supply hose 8 is connected to the water supply valve 7 of the water supply means disposed above the washing machine body 1, and the other end of the first water supply hose 8 is a detergent constituting the detergent charging box 12. 9a is connected to the detergent case 9, and the pump 13 and one end of the second water supply hose 10 are connected to the lower part of the detergent case 9.

The upper surface of the detergent case 9 is provided with a plurality of water injection holes 11 that communicate with the first water supply hose 8 and draw water in a shower shape. 12 falls on the detergent 9a inside, and flows through the pump 13 and the second water supply hose 10 together with the detergent 9a. The other end of the second water supply hose 10 is connected to a water injection cap 15 having an opening directed inward from above the rotating drum 3.

  Further, one end of the third water supply hose 14 is connected to the pump 13 as the detergent dissolving means, and the other end of the third water supply hose 14 is connected to the detergent case 9 so as to return to the piping path. By circulating, the detergent can be dissolved.

  Further, in order to detect the water level of the washing water in the water receiving tub 2, the water level is detected by a pressure sensor or the like that is airtightly communicated with the water pressure receiving portion 17a formed at the bottom of the water receiving tub 2 and the air pipe 17b. Means 17 are configured.

  Further, in order to drain the water in the water receiving tub 2 to the outside, the washing machine body 1 is provided with a drain valve 18 at the bottom of the washing machine body 1 and a control means 19 for controlling the operation operation from the washing process to the rinsing process and the dewatering process. It is arranged on the upper front of the.

  By opening the door body 6 and putting laundry into the rotary drum 3, and putting a predetermined amount of detergent into the washing start operation, the control means 19 is operated by the motor 5, the water supply valve 7, the drain valve 18 and the like. To control the sequence of washing, rinsing and dehydration.

  The operation and action of the drum type washing machine configured as described above will be described below.

  After the door 6 is opened, laundry is put into the rotating drum 3, a predetermined amount of detergent is put into the detergent charging box 12 in the detergent case 9, and a power switch (not shown) is turned on. When a start switch (not shown) provided at 19 is operated to start operation, the water supply valve 7 operates to start water supply.

  The water supply passes through the first water supply hose 8 connected to the water supply valve 7, flows into the detergent case 9, passes through a plurality of water injection holes 11 provided on the upper surface of the detergent case 9, and forms a shower on the detergent charging box 12. The detergent 9 a inside the detergent charging box 12 is dissolved by the shower-like water and flows down as a detergent liquid, and flows through the pump 13 and the second water supply hose 10 connected to the lower part of the detergent case 9.

  On the other hand, the water passing through the pump 13 and passing through the third water supply hose 14 returns again to the detergent case 9 of the detergent charging box 12 and falls again from the water injection hole 11 to dissolve the remaining detergent.

  The detergent liquid that has passed through the second water supply hose 10 is discharged as a high-concentration detergent liquid from the water filling cap 15 to the clothes inside the rotary drum 3.

  At this time, by rotating the rotating drum 3 at a low speed, the position of the laundry is changed, so that the detergent liquid can be supplied to the entire laundry quickly and uniformly in a shorter time. The rotational speed of the rotating drum during water supply is the rotational speed at which normal washing and washing are performed, or a slightly low rotational speed, so that the laundry is stuck to the inner peripheral surface of the rotating drum 3 by centrifugal force and does not fall. Set so that it does not become.

  In this way, the water supplied from the water supply means (water supply valve 7) becomes a detergent solution in which the detergent is sufficiently dissolved. By directly hitting the laundry, the high-concentration detergent solution can be quickly and evenly applied to the entire laundry. Since it can be included, the cleaning performance by the rotary stirring operation of the rotary drum 3 in the subsequent steps can be improved, and the washing time can be shortened.

  Regarding water supply, the water level detection means 17 is a predetermined water level above the water pressure receiving portion 17a formed at the bottom of the water receiving tank 2 and lower than the lowermost end portion of the rotating drum 3, or a water level in the vicinity of the lowermost end portion (for example, When it is detected that water has been supplied up to A) in FIG. 1, the operation of the water supply valve 7 is stopped, and the water supply is stopped.

  As described above, the amount of water used can be saved by washing with the rotation of the rotating drum 3 in a state in which the detergent solution hardly accumulates in the water receiving tank 2 or in an extremely small state.

  As described above, in the first embodiment, the washing process of the high-concentration detergent is performed by supplying the high-concentration detergent liquid to the laundry and setting the low level of the washing water. Due to the rotation of the rotating drum 3, the agitation protrusion 4 provided on the inner peripheral surface of the rotating drum 3 hooks the laundry in contact with the inner peripheral surface of the rotating drum 3 and lifts it in the rotating direction. Since the laundry falls when its own weight is lifted up to a height that surpasses the inertia and centrifugal force associated with the rotation, the laundry accumulated in the rotating drum 3 is also lifted and moved one after another, dropped from above, Wash the laundry. At this time, the washing can be performed in a state where the entire laundry contains a detergent solution with a high concentration, so that the washing performance can be improved.

  Thereafter, a rinsing process and a dehydrating process are performed, and a series of washing processes is completed.

  In the first embodiment, the detergent dissolving means for circulating the detergent liquid by the pump 13 connected to the lower part of the detergent case 9 is provided. However, the same effect can be obtained in other detergent dissolving means.

  Further, in the first embodiment, the configuration in which the rotary drum 3 is inclined is shown, but the same effect can be obtained even when the rotary drum 3 is arranged in the horizontal direction.

(Embodiment 2)
FIG. 2 is a cross-sectional view of a drum type washing machine according to Embodiment 2 of the present invention, and FIG. 3 is a plan view of an essential part of the washing machine.

  In the configuration example of the second embodiment, in addition to the components described with reference to FIG. 1 of the first embodiment, the laundry housed in the rotary drum 3 is heated as shown in FIGS. 2 and 3 below. It is a structural example in the case of the washing machine provided with the warm air supply means which supplies wind, and having the function to dry clothes.

  As shown in FIG. 2, the air exhausted from the water receiving tank 2 through the exhaust port 21 formed above the water receiving tank 2 is dehumidified pipe 22, yarn waste collecting filter 23, blower pipe 24, heating pipe An air circulation path for supplying hot air into the outer tub 2 again from the blower port 26 by the blower fan 27 through 25 is configured.

  The dehumidifying conduit 22 is formed adjacent to the side peripheral surface of the water receiving tank 2 and communicates with the water receiving tank 2 through an exhaust port 21 that opens to the upper peripheral surface of the water receiving tank 2. . A dehumidifying means 38 having a water injection nozzle 52 and a heat exchanger 51 through which low-temperature water sprinkled from the water injection nozzle 52 flows is disposed in the dehumidification conduit 22, and a water receiving tank exhausted from the exhaust port 21. The air in 2 is heat-exchanged by the dehumidifying means 38 and cooled to dehumidify and dry the laundry.

  The dehumidifying duct 22 is connected to the air duct 24 on the front side of the washing machine main body 1, and a lint collecting filter 23 for filtering dust such as lint contained in the air is provided at the inlet of the air duct 24. It is arranged.

  The air duct 24 is a duct for guiding air to the heating duct 25 disposed on the back side of the water receiving tank 2, and is disposed adjacent to the side peripheral surface of the water receiving tank 2 together with the dehumidifying duct 22. Yes.

  As shown in the plan view of FIG. 3, the air duct 24 is connected to a heating pipe 25 formed in a substantially arc shape in a planar shape on the back surface side of the water receiving tank 2, and the hot air disposed in the connecting portion. A one-way air flow is formed in the air circulation path by the blower fan 27 as supply means.

  A heater 28 is disposed in the heating pipe 25, and the air flowing from the blower pipe 24 is heated and heated in the water receiving tank 2 as hot air heated and dried from the blower opening 26 leading to the water receiving tank 2. To be sent to. The warm air is blown during the water supply process or the washing process of the high concentration detergent.

  The heating pipe 25 is provided with a temperature sensor 31 that constitutes temperature detection for detecting the temperature of the air blown from the blower opening 26, and the detected temperature of the blown air is input to the control means 19 described above to be a heater. It is comprised so that the heating temperature by 28 can be adjusted.

  The heating line 25 detects an abnormal overheating state of the heater 28 and shuts off the energization of the heater 28, and the overflow water level in which water or bubbles that flow backward from the blower port 26 flows into the blower fan 27 side. An overflow water level sensor 29 for detecting the above is provided to ensure safety.

  FIG. 4 is a view for explaining a ventilation state between the hot air water receiving tank 2 and the rotating drum 3.

  As shown in FIG. 4, the bottom surface (rear surface) of the rotating drum 3 has a plurality of concentric circles from the center of rotation of the rotating drum 3 on the circumference corresponding to the air outlets 26 formed in the water receiving tank 2. The air vent 39 is formed, and most of the warm air blown into the water receiving tank 2 from the air vent 26 is fed into the rotary drum 3 through the air vent 39.

  Since the blower opening 26 is formed below the rotation center of the rotary drum 3, the warm air is blown from the lower side of the rotary drum 3 through the vent hole 39 and rises, so that the washing stirred in the rotary drum 3 is performed. It is possible to increase the temperature of the laundry and the detergent solution contained in the laundry efficiently by touching a wide area.

  As described above, in the second embodiment, the function and configuration for drying the clothes inside the rotary drum 3 are utilized, and warm air is supplied during at least one of the water supply stroke or the high concentration washing stroke. By blowing air into the rotating drum 3, it is possible to increase the temperature of the laundry and detergent liquid in high-concentration laundry, thereby activating the detergent liquid, improving the washing performance, and shortening the washing time.

  As described above, in the drum type washing machine according to the present invention, the detergent liquid discharged from the water supply means directly hits the laundry, so that a high concentration detergent liquid is quickly and uniformly contained in the entire laundry, Since it can be washed at an early stage, the cleaning performance can be improved and the time can be shortened. Not only in washing machines, but also in various types of equipment and devices that dissolve powder and granules in liquid It can also be widely applied to.

Sectional drawing of the drum type washing machine in Embodiment 1 of this invention Sectional drawing of the drum type washing machine in Embodiment 2 of this invention The principal part top view of the partial cross section of a drum type washing machine same as the above. The figure explaining the ventilation state of the water receiving tub and rotating drum of a drum type washing machine same as the above Sectional view of a drum-type washing machine showing an example of a conventional structure

Explanation of symbols

2 Water receiving tank 3 Rotating drum 5 Motor (drive means)
7 Water supply means 13 Pump (detergent dissolving means)
17 Water level detection means 19 Control means 27 Blower fan (warm air supply means)

Claims (4)

A rotating drum having a rotation center axis in a substantially horizontal direction or a substantially inclined direction; a water receiving tub that is elastically supported by a washing machine body and encloses the rotating drum; a driving means for rotating the rotating drum; Water supply means for supplying water, detergent dissolving means for storing detergent and dissolving the detergent with water supplied from the water supply means, and control means for controlling the drive means, water supply means, detergent dissolving means, etc. The control means includes a water supply stroke for supplying a predetermined amount of high-concentration detergent liquid from the detergent dissolving means directly to the laundry, and at least the weight of the laundry lifted upward by the rotation of the rotating drum after the water supply stroke is completed. The drum type washing machine which performs the washing process of the high concentration detergent rotated with the predetermined rotational speed which shows the behavior which falls from the height position which wins. A water level detection means for detecting the water level in the water receiving tank is provided, and the control means is configured such that, in the water supply stroke, the water level detection means is a predetermined water level lower than the lowermost end of the rotating drum, or a predetermined water near the lowermost end of the rotating drum. The drum type washing machine according to claim 1, wherein the water supply stroke is terminated when a water level of the water is detected. The drum type washing machine according to claim 1 or 2, wherein the control means rotates the rotating drum at a rotational speed equal to or lower than a predetermined rotational speed in the water supply process. A hot air supply means for sending hot air into the rotating drum is provided, and the control means drives the hot air supply means during at least one of the water supply stroke or the high concentration washing stroke. The drum-type washing machine according to any one of 3.

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