JP2011152252A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively dissolve a detergent by the time the detergent is fed into a water tub. <P>SOLUTION: The washing machine includes: a detergent feeding device 10 for feeding the detergent into the water tub 2; a water injection path 12 for introducing washing water fed from a water supply valve 8 into the water tub 2; a heating device 15 provided in the water injection path 12; a circulation pump 16 for feeding the washing water heated by the heating device 15 into the water tub 2; and control means 19 for controlling a motor 7, etc. to sequentially control washing, rinsing, and spin-drying, etc. The control means 19 feeds the washing water together with the detergent into the water injection path 12 when washing is started, and guides the washing water heated by the heating device 15 provided in the water injection path 12 into the water tub 2 by the circulation pump 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a washing machine for washing clothes and the like.

  Conventionally, this type of washing machine is generally one in which detergent is put into a detergent case, tap water is supplied to the bottom of the water tank through the detergent case, and the rotating drum is rotated to dissolve the detergent. (For example, refer to Patent Document 1).

  FIG. 5 shows the configuration of the drum-type washing machine described in Patent Document 1. As shown in FIG. 5, a water tank 52 is elastically supported in a casing 51 by a suspension mechanism (not shown). A rotating drum 53 formed in a cylindrical shape with a bottom is rotatably provided in the water tank 52, and its rotation axis is inclined forward and disposed. On the front side of the water tank 52 is formed a clothing input port 54 that leads to the opening end of the rotary drum 53, and by opening an openable / closable door 55 that closes the opening formed on the front side of the housing 51, the clothing input port is opened. The laundry can be taken in and out through the rotary drum 53 through 54.

  The rotating drum 53 has a large number of through holes (not shown) communicating with the inside of the water tank 52 on its peripheral side surface, and stirring protrusions (not shown) are provided at a plurality of positions on the inner peripheral surface. Yes. The rotating drum 53 is rotated in the forward and reverse directions by a motor 56 attached to the back side of the water tank 52, and washing is performed while stirring laundry such as clothes put in the rotating drum 53.

  The operation of the drum type washing machine is as follows. When a detergent for washing is put into a detergent case 57 provided at the upper part of the housing 51 and the laundry is put into the rotating drum 53 to start operation, a water supply valve 58 is started. Then, tap water is supplied to the detergent case 57, and together with the detergent A in the detergent case 57, a predetermined amount of washing water is stored in the water tank 52 through the water injection path 59 connected to the water tank 52.

  When the rotary drum 53 is driven to rotate by the motor 56 and the washing process is started, the laundry in the rotary drum 53 is lifted in the rotation direction by the stirring protrusions provided on the inner peripheral wall of the rotary drum 53. The falling stirring operation is repeated, and the laundry is washed by the action of tapping. After a predetermined washing time, the dirty washing water passes through the drainage channel 60 connected to the drainage port of the water tank 52 and is drained to the outside of the casing 51 by the drainage pump 61 provided below the water tank 52.

  Thereafter, the washing water contained in the laundry is dehydrated by a dehydrating operation of rotating the rotary drum 53 at a high speed, and a new washing water is poured into the water tank 52 to perform a rinsing step. Also in this rinsing step, the laundry stored in the rotating drum 53 is rinsed by repeating the stirring operation by the stirring protrusions by the rotation of the rotating drum 53, and becomes dirty after a predetermined rinsing time. The rinsing water is discharged by the drain pump 61, and the rinsing water contained in the laundry is dehydrated by the dehydrating operation of rotating the rotary drum 53 at a high speed, and the operation ends.

  At the start of washing, the detergent is dissolved in tap water to generate washing water. As described above, the water flow at the time of water supply is used, and the rotating drum 53 is rotated at the start of washing. In order to improve the washing performance of laundry, it is considered to promote the dissolution of the detergent in washing water.

As an example, it is considered that a detergent blade is provided in a detergent case to dissolve the detergent (see, for example, Patent Document 2). As another example, it is considered that the washing water in the water tank is heated by a heater while being circulated by a circulation pump, and the temperature of the washing water is raised and returned to the water tank (for example, Patent Documents). 3).

JP 2007-117140 A JP-A-56-109700 JP-A-2-289298

  However, in the conventional configuration, when the hardness of the supplied water becomes high, the detergent is difficult to dissolve, and cannot be sufficiently dissolved only by the rotation of the rotating drum. Although it is also considered to promote the dissolution of the detergent, when the washing water is heated by the heater, the washing water stored in the aquarium, the aquarium in contact with the heated washing water, the rotating drum, and the entire laundry are heated. As a result, there is a problem that the power consumption of the heater increases.

  In addition, since the washing water stored in the water tank is circulated and heated, when the washing water is stored in the water tank, the dissolved detergent is a part thereof, and the detergent is dissolved by circulation and heating. proceed. Therefore, since washing water in which the detergent is dissolved is generated as the washing progresses, it takes time from the start of washing until washing is performed with the washing water in which the detergent is dissolved. There was a problem that it could not be cleaned. Also, at the beginning of washing, it is difficult to circulate because the undissolved detergent contained in the washing water stored in the aquarium is mixed in the laundry, and it takes time to dissolve and causes uneven washing There was a problem of becoming.

  This invention solves the said conventional subject, and it aims at providing the washing machine which dissolved the detergent effectively until it supplies in the water tank.

  In order to solve the conventional problems, a washing machine of the present invention includes a detergent supply device that supplies a detergent into a water tank, a water supply channel that introduces the wash water supplied from a water supply valve into the water tank, and the injection machine. A heating device provided in the water channel, a circulation pump that supplies the washing water heated by the heating device into the water tank, and a control unit that sequentially controls washing, rinsing, dehydration, and the like by controlling a motor and the like, The control means supplies the washing water together with the detergent to the water injection channel at the start of washing, and introduces the washing water heated by the heating device provided in the water injection channel into the water tank by the circulation pump. It is.

  Thus, the washing water in which the detergent is dissolved can be supplied into the water tank, and the washing effect can be enhanced by causing the detergent to effectively act on the laundry from the start of washing.

  The washing machine of the present invention can supply the washing water in which the detergent is dissolved into the aquarium, and can enhance the washing effect by effectively causing the detergent to act on the laundry from the start of washing.

Side view of the washing machine in the first embodiment of the present invention Front view of the washing machine Cross section of the main part of the washing machine Block diagram of the washing machine in the second embodiment of the present invention Side view of a conventional drum-type washing machine

  1st invention is the water tank elastically supported in the housing | casing, the washing tub rotatably provided in the said water tank, the motor which rotationally drives the said washing tub, and the water supply valve which supplies washing water in the said water tub A detergent supply device for supplying detergent into the water tank, a water injection channel for introducing the wash water supplied from the water supply valve into the water tank, a heating device provided in the water injection channel, and heating by the heating device A circulating pump for supplying the washed water into the water tank, and a control means for controlling the motor and the like so as to sequentially control washing, rinsing, dehydration, etc. Before supplying the washing water to the water tank by supplying water to the water injection path and introducing the washing water heated by the heating device provided in the water injection path into the water tank by the circulation pump Can dissolve Can, at the start of washing, the washing water dissolving the detergent can be supplied into the water tank. In particular, even when the temperature of tap water supplied from the water supply valve is low or the hardness of the water is high, the temperature of the washing water can be effectively increased before supplying the washing water into the aquarium. The washing water containing the detergent that has been heated and easily dissolved is stirred with a circulation pump, so that the detergent can be surely dissolved and introduced into the water tank. Therefore, it is possible to raise the temperature of the washing water economically with low power consumption, to prevent the introduction of detergent that is not dissolved in the aquarium, to eliminate uneven washing, and to apply detergent to the laundry from the start of washing. The cleaning effect can be enhanced by acting effectively.

  In the second invention, in particular, the water injection channel of the first invention is provided with a water injection unit for connecting the circulation water channel connected to the bottom of the water tank and discharging the washing water to the laundry tank, and the water injection channel and the circulation water channel A heating device and a circulation pump are provided between the connecting portion and the water injection portion, and the heating device is disposed on the upstream side of the circulation pump. The water can be stirred with a circulation pump, and washing water in which the detergent is dissolved can be introduced into the water tank.

  In the third aspect of the invention, in particular, the water injection channel of the first or second invention is provided with a meandering water channel in the washing water heating section, so that the heating time can be secured for a short section of the washing water flowing through the water injection channel. , Can be heated efficiently.

  In particular, the fourth invention is provided with a water temperature detecting means for detecting the temperature of the washing liquid flowing through the water injection channel of any one of the first to third inventions, and the control means is based on the output of the water temperature detecting means. By controlling the heating device, the washing water can be heated to an optimum temperature for dissolving the detergent.

  In particular, the fifth invention is provided with a water temperature detecting means for detecting the temperature of the washing liquid flowing through the water injection channel according to any one of the first to fourth inventions, and the rotational speed of the circulation pump is provided variably. By controlling the number of revolutions of the circulation pump based on the output of the water temperature detecting means, the means can optimize the temperature of the washing water introduced into the aquarium with high accuracy. An enzyme can be activated effectively.

  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)
FIG. 1 is a side view of a washing machine according to a first embodiment of the present invention, FIG. 2 is a front view thereof, and FIG.

  1 to 3, a water tank 2 is elastically supported in a housing 1 by a suspension mechanism (not shown). A rotating drum 3 as a washing tub formed in a cylindrical shape with a bottom is provided in the water tub 2 so as to be freely rotatable, and its rotation axis is inclined forward and disposed. On the front side of the aquarium 2 is formed a clothing input port 4 leading to the opening end of the rotary drum 3, and by opening an openable / closable door 5 for closing the opening formed on the front side of the housing 1, 4, laundry such as clothes can be taken in and out of the rotary drum 3.

  The rotating drum 3 is formed with a large number of through holes (not shown) communicating with the inside of the water tank 2 on its peripheral side surface, and agitation protrusions 6 are provided at a plurality of positions on the inner peripheral surface. The rotating drum 3 is rotated in the normal direction and the reverse direction by a motor 7 attached to the back side of the water tank 2, and washing is performed while stirring laundry such as clothes put in the rotating drum 3.

  A water supply valve 8 for supplying washing water into the aquarium 2 is provided in the upper part of the housing 1 to supply tap water supplied from the outside of the housing 1. Washing water such as tap water supplied from the water supply valve 8 is supplied from the water injection nozzle 9 to the detergent supply device 10. At the time of washing, it flows into the water injection channel 12 together with the laundry detergent A that has been put into the detergent case 11 of the detergent supply device 10.

  The water injection passage 12 is provided with a water injection portion 14 for connecting the other end of the circulation water passage 13 having one end connected to the bottom of the water tank 2 and discharging the washing water in which the detergent A is dissolved to the rotating drum 3. The washing water flowing through the water injection channel 12 is heated by the heating device 15 before being introduced into the water tank 2. The heating device 15 is disposed between the water injection section 14 from the connection portion between the water injection path 12 and the circulation water path 13.

  The washing water containing the detergent A flowing through the water injection channel 12 is pressurized by the circulation pump 16. The circulation pump 16 that introduces the washing water into the rotary drum 3 is disposed between the heating device 15 and the water injection unit 14, and the heating device 15 is disposed upstream of the circulation pump 16.

  The water injection channel 12 is provided with a meandering water channel 17 that is winding on the upstream side of the circulation pump 16, and the washing water flowing through the serpentine water channel 17 is heated by the heating device 15. The heating device 15 is composed of a plate-shaped heater, and washing water flows over the heater to be heated. Reference numeral 18 denotes a water temperature detecting means for detecting the temperature of the washing water flowing through the water injection path 12, which is provided in the vicinity of the outlet of the meandering water path 17 and is heated by the control means 19 based on the temperature of the washing water detected by the water temperature detecting means 18. The device 15 is controlled so that the washing water is heated to a temperature suitable for dissolving the detergent.

  Reference numeral 20 denotes a drainage channel for discharging the washing water in the water tank 2, and the washing water after washing and rinsing is discharged to the outside by the drainage pump 21.

  About the washing machine of this invention comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, in the washing process, when a predetermined amount of laundry detergent A is put into a detergent case 11 provided in the upper part of the housing 1 and laundry is put into the rotary drum 3 to start operation, The tap water is supplied from 8 to the detergent case 11, and together with the detergent A in the detergent case 11, reaches the meandering water channel 17 through the water injection channel 12 connected to the water tank 2.

  Here, the washing water containing the detergent A is heated by the heating device 15 when passing through the meandering water channel 17 and is heated to a temperature suitable for dissolving the detergent (generally 35 to 40 ° C.). The temperature of the washing water is detected by the water temperature detecting means 18 provided in the vicinity of the outlet of the meandering water channel 17, and is heated by the heating device 15 when the water temperature is a low temperature of 20 degrees or less, for example. The water temperature at which the heating device 15 operates can be arbitrarily set, and may be operated when the temperature is 10 ° C. or lower.

When the temperature of the washing water passing through rises to, for example, 35 ° C., the energization of the heating device 15 is stopped. It is designed to be heated to a suitable temperature. The heating of the washing water can be arbitrarily set, and can be operated at all times, or can be manually operated as necessary.

  Washing water heated to a predetermined temperature is pressurized by a circulation pump 16 disposed downstream of the heating device 15, and a predetermined amount of washing water corresponding to the amount of laundry detected at the start of washing is supplied to the aquarium 2. Store in. Since the circulation pump 16 is stirred while pressurizing the washing water, the washing water is surely dissolved in the washing water heated to a temperature at which the detergent is easy to dissolve, and the detergent is dissolved before being introduced into the water tank 2. Undissolved detergent can be prevented from mixing with the laundry in the water tank 2.

  When the rotary drum 3 is rotationally driven by the motor 7 and the washing process is started, the laundry in the rotary drum 3 is lifted in the rotational direction by the stirring protrusions 6 provided on the inner peripheral wall of the rotary drum 3. Then, the falling stirring operation is repeated, and the laundry is washed by the action of tapping.

  Since washing can be performed with washing water in which the detergent is dissolved from the start of the washing process in which the rotary drum 3 is driven to rotate, there is no wasted time until the detergent is dissolved, and washing efficiency can be improved. In the washing step, the circulation pump 16 is driven so that the washing water in the water tub 2 enters the water injection path 12 from the circulation water path 13 upstream of the meandering water path 17, and passes through the heating device 15 and the circulation pump 16. The washing water can be heated to a predetermined temperature while washing and the washing effect can be enhanced.

  After a predetermined washing time, the dirty washing water passes through the drainage channel 20 connected to the drainage port of the water tank 2 and is drained to the outside of the housing 1 by the drainage pump 21 provided below the water tank 2, and the rotating drum 3. The washing water contained in the laundry is dehydrated by the dehydrating operation of rotating the water at a high speed, and then a new washing water is poured into the water tank 2 from the water pouring channel 12 to perform a rinsing step.

  In the rinsing process, the same agitating operation as in the washing process is repeated for a predetermined time, and rinsing is performed. After the predetermined rinsing time, dirty rinsing water is discharged from the drainage channel 20 to the outside, and the rotating drum 3 is moved at high speed. The rinse water contained in the laundry is dehydrated by the rotating dehydrating operation, and the operation is terminated.

  As described above, the washing machine of the present invention supplies the washing water together with the detergent to the water injection channel 12 at the start of washing, and the washing water heated by the heating device 15 provided in the water injection channel 12 is supplied to the water tank 2 by the circulation pump 16. Before the washing water containing the detergent A is introduced into the aquarium 2, the detergent can be surely dissolved in the washing water, and the detergent is added to the laundry from the start of washing. Can be effectively operated to enhance the cleaning effect.

(Embodiment 2)
FIG. 4 is a block configuration diagram of a washing machine according to the second embodiment of the present invention. The feature of the present embodiment is that a water temperature detecting means 18 for detecting the temperature of the washing water flowing through the water injection path 12 is provided, and the rotation speed of the circulation pump 16 that pressurizes and agitates the washing water flowing through the water injection path 12 can be varied. It is provided. Other configurations are the same as those of the first embodiment, and those in the first embodiment are used for the detailed description.

When the laundry is put into the rotating drum 3 and the operation is started, tap water is supplied from the water supply valve 8 to the detergent case 11, and together with the detergent A in the detergent case 11, through the water injection path 12 connected to the water tank 2. The temperature of the washing water that reaches the meandering water channel 17 and flows through the water injection channel 12 is detected by the water temperature detection means 18. The control means 19 controls the heating device 15 based on the temperature of the washing water detected by the water temperature detection means 18 and heats it to a temperature suitable for dissolving the detergent.
The number of rotations is controlled.

  With the above configuration, the washing water flowing through the water injection channel 12 can be heated to a temperature suitable for dissolving the detergent, so that the detergent can be effectively dissolved by the circulation pump 16 and the temperature of the washing water introduced into the water tank 2 can be increased. Can be optimized with high accuracy, and the enzyme which is a component of the detergent can be activated.

  Note that the present invention can be implemented by combining the embodiments. Moreover, it can implement by combining a part of other embodiment.

  As described above, the washing machine according to the present invention can supply the washing water in which the detergent is dissolved into the aquarium, and enhances the washing effect by effectively acting the detergent on the laundry from the start of washing. It can be used as a washing machine.

1 Housing 2 Water tank 3 Rotating drum (washing tub)
7 Motor 8 Water supply valve 10 Detergent supply device 12 Water injection channel 15 Heating device 16 Circulation pump 19 Control means

Claims (5)

A water tank elastically supported in the housing, a washing tub rotatably provided in the water tub, a motor for rotating the washing tub, a water supply valve for supplying washing water into the water tub, and a water tank A detergent supply device for supplying detergent, a water injection channel for introducing the wash water supplied from the water supply valve into the water tank, a heating device provided in the water injection channel, and the washing water heated by the heating device A circulation pump for supplying the water into the water tank and a control means for controlling the motor and the like to sequentially control washing, rinsing, dehydration and the like are provided. The control means supplies the washing water together with the detergent to the water injection channel at the start of washing. A washing machine that supplies and supplies washing water heated by a heating device provided in the water injection channel into the water tank by the circulation pump. The water injection channel is connected to a circulation channel connected to the bottom of the water tub, and a water injection unit for discharging washing water to the washing tub is provided, and a heating device and a water supply unit are connected between the water injection channel and the connection unit of the circulation channel. The washing machine according to claim 1, wherein a circulation pump is provided, and the heating device is disposed upstream of the circulation pump. The washing machine according to claim 1 or 2, wherein the water injection channel is provided with a meandering water channel in a heating part of the washing water. The water temperature detection means which detects the temperature of the wash water which flows through a water supply channel is provided, and the control means controls the heating device based on the output of the water temperature detection means. Washing machine. A water temperature detecting means for detecting the temperature of the wash water flowing through the water supply channel is provided, and the rotation speed of the circulation pump is provided to be variable. The control means controls the rotation speed of the circulation pump based on the output of the water temperature detection means. The washing machine according to any one of claims 1 to 4, wherein the washing machine is made.

Images