JP4007169B2 - Washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine having a water absorption pump that absorbs remaining hot water of a bath, etc., and automatically performing each step of washing, rinsing, and dehydration.
[0002]
[Prior art]
Conventionally, in a washing machine equipped with a water absorption pump that absorbs the bath water in order to use the remaining hot water of the bath for washing, a water absorption pump and a water supply valve that supplies tap water are arranged at the upper part of the machine body. One of the discharge ports is connected to the priming water supply port of the water absorption pump, and the priming water of the water absorption pump is supplied by tap water (for example, see Patent Document 1).
[0003]
The priming water in the suction pump is structured not to return from the priming water supply port by a check valve provided in the priming water supply port of the water suction pump.
[0004]
And the water level change in a washing tub at the time of water absorption pump operation | movement is detected by a water level detection means, and when the detected water level reaches the washing water level, it is set as the structure which stops operation | movement of a water absorption pump.
[0005]
[Patent Document 1]
JP-A-11-244484 (page 1-2, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, in such a conventional configuration, when the water absorption hose is long or when the water absorption time is long, such as a large lift difference between the washing machine and the bath tub, water is supplied to the required amount of water. For a long time, and the time until the end of washing becomes long.
[0007]
In order to increase the capacity of the water absorption pump, assuming such a condition that the water absorption time becomes long, when the number of rotations of the pump motor is increased, when using a standard hose or when using a washing machine and a bath tub Although the water absorption time is shortened even in the standard assumption that there is not much difference in head height, vibration and noise increase due to the increase in the number of revolutions of the pump motor, and another part is used to reduce it. Has become necessary, and the external shape of the pump becomes large.
[0008]
The present invention solves the above-mentioned conventional problems, and shortens the operation time of the water absorption pump when the water absorption hose is long or when the water absorption time is long, such as a large head difference between the washing machine and the bath tub. The purpose is to shorten the time until the end of washing.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention absorbs water from a bath tub or the like through a water absorption hose through a water absorption hose and supplies the water to the washing tub, detects the water level in the washing tub with water level detection means, and absorbs water with a setting switch. Configure the use of the pump, etc. , and control the washing operation by the control device. When the use of the water absorption pump is set , the control device operates the water absorption pump at the set rotation speed and starts the operation of the water absorption pump. If the water level changes in the washing濯槽after a predetermined time has elapsed from falls below a predetermined value, to change the rotational speed of the water pump to be higher than the set rotational speed, the water level changes in the washing tub exceeds a predetermined value In this case, the rotation speed of the water absorption pump is changed to be lower than the set rotation speed, and the set rotation speed of the water absorption pump at the next operation is changed to the changed rotation speed .
[0010]
As a result, when the water absorption hose is long, or when the water absorption time is long, such as when the lift difference between the washing machine and the bath tub is large, the capacity of the water absorption pump increases, the amount of water supply per unit time increases, and the water absorption The pump operation time can be shortened, the time until the end of washing can be shortened , and when the water absorption hose is short, or the difference in lift between the washing machine and the bath tub is small, the water absorption time is short. In this case, it is possible to reduce the vibration and noise of the washing machine by reducing the number of rotations of the water absorption pump. Furthermore, when using bath water during the next operation, the water absorption hose Can be operated at the number of rotations of the water absorption pump according to the length and conditions, that is, when the water absorption hose is long, or when the water absorption time is long, such as a large head difference between the washing machine and the bath tub The water supply time to the washing water level can be shortened, and when the water absorption time is short, such as when the water absorption hose is short or the head difference between the washing machine and the bath tub is small. , Ru it is possible to reduce the vibration and noise of the washing machine at the time of water pump operation.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a water absorption pump that absorbs water from a bath tub or the like and supplies water to the washing tub via a water absorption hose, a water level detection means that detects the water level in the washing tub, and the water absorption pump. And a control device for controlling the operation of washing, and when the use of the water suction pump is set, the control device operates the water suction pump at a set rotational speed, and If the water level changes in the previous SL washing tub after a predetermined time has elapsed from the start of the operation of the water pump is below a predetermined value, to change the rotational speed of the water pump to be higher than the set rotational speed, the washing tub When the water level change exceeds a predetermined value, the rotation speed of the water suction pump is changed to be lower than the set rotation speed, and the set rotation speed of the water absorption pump at the next operation is changed to the changed rotation speed. Change Is obtained by the so that, when and long water hose, in the case of washing machines and the like water time lift difference between bath tub is high is longer condition, it is possible to enhance the ability of the water pump, the unit time increasing the amount of water supplied per operating time of the water pump can be shortened, Ki de is possible to shorten the time to wash the end, or when the water hose is short, the lift difference between the washing machine and the bath tub If conditions water time is shortened like small, by lowering the rotational speed of the water pump, it is possible to suppress the vibration and noise of the washing machine lower, further, when using the bath water for the next operation, water pump can be operated immediately after the start of operation at a rotational speed of the water pump according to the length and conditions of the water hose, i.e., if a long water hoses and, washing machine and the like lift difference between the bath tub is high water absorption In the case of the conditions between becomes longer, the water supply time of the bath water to wash濯水position it is possible to shorten the, also, or if the water hose is short, such as the lift difference between the washing machine and the bath tub is small water If the condition that the time is shortened, thereby reducing the vibration and noise of the washing machine during intake water pump operation.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
Example 1
As shown in FIG. 1, the control device 1 is configured by a microcomputer or the like that controls the operation of the washing machine, and the user operates a switch of the operation display unit 3 provided in front of the upper portion of the upper housing 2. The operation details such as washing, rinsing and dehydration are set, and the display is performed on a display unit such as a light emitting diode to control the washing process. Moreover, the control apparatus 1 has a buzzer, and notifies the reception of setting, completion | finish of a process, abnormality, etc.
[0014]
As shown in FIG. 2, the operation display unit 3 includes a power switch 30 for turning on power, a start / pause switch 31 for instructing start or pause of operation, a course setting switch 32 for setting an operation course, and bath water absorption. Displayed when bath water absorption is set by the bath water setting switch 33 and the bath display setting switch 33 (setting switch) 33 and the like, the course display section 40 displaying the course set by the course setting switch 32, and the bath water setting switch 33 A display unit such as a bath water display unit 41 for displaying water, a water level display unit 42 for displaying the level of water to be supplied, and a priming water display unit 43 for displaying priming water.
[0015]
The lid 5 covers the rear end of the laundry input port as a fulcrum and can be opened and closed. A washing and dewatering tub (washing tub) 6 is included in an outer tub 9 supported by a housing 7 by a suspension bar 8. The pulsator 10 is driven by a motor 13 via a speed reduction clutch unit 11 and a belt 12 to agitate the laundry.
[0016]
The water absorption pump 14 has a built-in motor and is built in the upper rear of the upper housing 2, and a water absorption hose 15 is connected to suck up the remaining hot water in the bath tub and supply water to the washing and dewatering tub 6.
[0017]
The water level detection means 16 is connected to an air trap 9 a provided in the outer tub 9 via a pressure introduction hose 17 to detect the water level in the washing and dehydrating tub 6.
[0018]
FIG. 3 is a view of the periphery of the water absorption pump 14 as seen from the front of the washing machine. The water supply valve 18 is connected to the water supply, and one of the water supplies is supplied to the washing and dehydrating tub 6 through the detergent case 19. One is connected to the priming water supply port 14 c of the water suction pump 14 through the priming water hose 20. A check valve is provided in the priming water supply port 14c so that the priming water in the water suction pump 14 does not flow out.
[0019]
The water discharged from the water absorption pump 14 is passed from the discharge port 14d to the detergent case 19 through the discharge hose 21. A water absorption filter device 22 containing a filter is connected to the tip of the water absorption hose 15 and is put into a bath tub or the like.
[0020]
Here, after a predetermined time (for example, 3 minutes) has elapsed since the start of the operation of the water absorption pump 14, the control device 1 has a change in the water level detected by the water level detection means 16 below a predetermined value (for example, 10 mm). In this case, the set rotational speed of the water absorption pump 14 is increased.
[0021]
In the above configuration, when washing is performed using the remaining hot water in the bath, the user presses the power switch 30 of the operation display unit 3 to turn on the power, selects the operation course with the course setting switch 32, and then sets the bath water. When the switch 33 turns on the bath water display 41 to display “wash” and “rinse 1”, the bath water absorption is set in the washing process and the first rinsing process.
[0022]
With this setting, when the start / pause switch 31 is pressed, the operation is started. The controller 1 drives the motor 13 to invert the pulsator 10 to the left and right several times, detects inertial rotation of the motor 13 at this time, determines the amount of laundry, and determines the determined amount of laundry The washing water level is determined based on the above and displayed on the water level display unit 42.
[0023]
Next, the process proceeds to the water supply process. The operation in this water supply process will be described with reference to FIG.
[0024]
When the water supply stroke is started in step 50 in FIG. 4 and bath water absorption is set in step 51, the water supply valve 18 is turned on for 10 seconds in order to supply priming water to the water absorption pump 14 in step 52. After the water supply time timer is started in step 53, the water absorption pump 14 is turned on in step 54, and the operation of the water absorption pump 14 is started. When the water absorption pump 14 starts operating, the air in the water absorption hose 15 is first discharged in about 1 minute, and then water absorption is started.
[0025]
In step 55, the water suction pump 14 is turned on until a predetermined time (3 minutes) elapses by the water supply time timer. When 3 minutes elapses in step 55 due to the water supply time timer, the process proceeds to step 56 where the water level detection means 16 detects the change in the water level of the washing and dewatering tub 6.
[0026]
If the detected change in the water level is equal to or less than the predetermined value (10 mm) in step 57, the process proceeds to step 58, the set rotational speed of the water absorption pump 14 is increased, and the process proceeds to step 59. At this time, if the detected change in the water level is greater than 10 mm, the set rotational speed of the water absorption pump 14 remains unchanged and the routine proceeds to step 59.
[0027]
When the water level detected by the water level detection means 16 at step 59 reaches the washing water level, the routine proceeds to step 60 where the water absorption pump 14 is turned off and the water supply stroke is terminated.
[0028]
If bath water absorption is not set in step 51, the water supply valve 18 is turned on in step 61. If the water level detected by the water level detection means 16 in step 62 reaches the washing water level, the process proceeds to step 63 and the water supply valve 18 is turned off. And end the water supply process.
[0029]
When the water supply process is completed, the process proceeds to the washing process, and the pulsator 10 is turned left and right to stir and wash the clothes, thereby completing the washing process. Next, the process proceeds to the rinsing process, and after the drain valve 23 is driven and drained, the washing and dewatering tub 6 is rotated to dehydrate the detergent solution. And it moves to the water supply process of the 1st rinse.
[0030]
Since the bath water absorption is also set in the first rinsing water supply process, the water absorption pump 14 is driven to absorb the water as in the washing process. Thereafter, in the second rinsing process, water is supplied from the tap water by the water supply valve 18, and after the rinsing and dehydrating processes, an end notification is given by a buzzer, and the operation is terminated.
[0031]
Thus, according to the present embodiment, even if the predetermined time (3 minutes) elapses, when the change in the water level of the washing and dewatering tub 6 is below the predetermined value, the set rotational speed of the water absorption pump 14 is increased. By increasing the water absorption capacity of bath water, the amount of water supply per unit time can be increased, the operation time of the water absorption pump to the washing water level can be shortened, and the time until the end of washing can be shortened.
[0032]
In the present embodiment, the predetermined value of step 57 in FIG. 4 is 10 mm, but it depends on the water absorption capacity of the water absorption pump 14 and it goes without saying that the smaller the water absorption capacity, the smaller.
[0033]
(Example 2)
In the control device 1 shown in FIG. 1, the change in the water level detected by the water level detection means 16 exceeds a predetermined value (for example, 10 mm) after a predetermined time (for example, 3 minutes) has elapsed after the operation of the water absorption pump 14 has started. In this case, the set rotational speed of the water absorption pump 14 is lowered. Other configurations are the same as those of the first embodiment.
[0034]
The operation of the above configuration will be described with reference to FIG. In addition, since the operation | movement of step 50-step 56 and step 59-step 63 is the same as the operation | movement of the said Example 1, description is abbreviate | omitted.
[0035]
When a predetermined time (3 minutes) elapses by the water supply time timer in step 55, the process proceeds to step 56, and the water level detection means 16 detects a change in the water level of the washing tub. If the detected change in the water level is greater than or equal to the predetermined value (10 mm) in step 65, the process proceeds to step 66, the set rotational speed of the water absorption pump 14 is lowered, and the process proceeds to step 59. At this time, if the detected change in the water level is smaller than 10 mm, the set rotational speed of the water suction pump 14 remains unchanged and the routine proceeds to step 59.
[0036]
Since the operation after the start of the water supply process is the same as that of the first embodiment, the description thereof is omitted.
[0037]
As described above, according to the present embodiment, when the change in the water level of the washing and dewatering tub 6 after a predetermined time (3 minutes) exceeds a predetermined value (10 mm), the set rotational speed of the water absorption pump 14 is lowered and the washing is performed. The vibration and noise of the washing machine during operation of the water absorption pump can be reduced as long as the time is not affected.
[0038]
In this embodiment, when the change in the water level is larger than the predetermined value, the set rotational speed of the water absorption pump 14 is lowered. However, the washing time must be shortened by setting the operation course and the like. In such a case, the set rotational speed may not be changed.
[0039]
(Example 3)
The control device 1 shown in FIG. 1 stores the change in the water level of the washing and dewatering tub 6 detected by the water level detection means 16 after a predetermined time has elapsed after the operation of the water absorption pump 14 is started, and the water supply pump 14 at the next operation. The rotation speed setting value is changed. Other configurations are the same as those in the first or second embodiment.
[0040]
The operation of the above configuration will be described with reference to FIG. Before starting the water supply process shown in FIG. 4, in step 70 of FIG. 6, if the detected water level at the time of bath water absorption during the previous operation is less than a predetermined value (10 mm), step Proceed to 71, increase the set rotational speed of the water suction pump 14, and proceed to the water supply stroke. In step 70, when the change in the detected water level at the time of bath water absorption at the previous operation exceeds a predetermined value (10 mm), the set rotation speed of the water absorption pump 14 is not changed and the process proceeds to the water supply stroke.
[0041]
Since the operation after the start of the water supply process is the same as that of the first or second embodiment, the description thereof is omitted.
[0042]
As described above, according to the present embodiment, the value of the water level change of the washing / dehydrating tub 6 after a predetermined time after the operation of the water absorption pump 14 is stored, and the value of the previous water level change stored at the next operation is stored. When it is below the predetermined value, the water supply time to the washing water level can be shortened by setting the rotational speed setting value of the water absorption pump 14 higher than the predetermined value.
[0043]
Further, when the value of the water level change stored at the previous operation exceeds a predetermined value, the rotation speed setting value of the water absorption pump 14 is set lower than the predetermined value, and the washing machine vibration during the operation of the water absorption pump 14 Noise can be reduced.
[0044]
In this embodiment, the value of the water level change after a predetermined time has elapsed is determined based on the value of the water level change stored during the previous operation. Then, the set rotational speed of the water absorption pump 14 may be changed.
[0045]
【The invention's effect】
As described above, according to the invention described in claim 1 of the present invention, if the use of intake pump has been set, the water pump is operated at the set rotational speed, after a predetermined time has elapsed from the start of the operation of the water pump If the water level changes in the washing濯槽falls below a predetermined value, when to change the rotational speed of the water pump to be higher than the set rotational speed, the water level changes in the washing tub exceeds a predetermined value, the rotation of the water pump The number of rotations is set to be lower than the set number of rotations and the set number of rotations of the water absorption pump at the next operation is changed to the changed number of rotations . In the condition where the water absorption time is long, such as the difference in the head height from the bathtub, the capacity of the water absorption pump increases, the amount of water supply per unit time increases, the operation time of the water absorption pump can be shortened, and Shorten time Rukoto can, or if water hose is short, when the conditions such as the water absorption time lift difference between the washing machine and the bath tub is small is short, by lowering the rotational speed of the water pump, the vibration of the washing machine In addition, when bath water is used during the next operation, it can be operated at the number of rotations of the water absorption pump according to the length and conditions of the water absorption hose immediately after the operation start of the water absorption pump, In other words, when the water absorption hose is long, or when the water absorption time is long, such as a large head difference between the washing machine and the bath tub, the bath water supply time to the washing water level can be shortened. , or if water hose is short, in the case of washing machines and the like water time lift difference between bath tub is small is shortened condition, Ru can reduce vibration and noise of the washing machine during the water pump operation .
[Brief description of the drawings]
1 is a sectional side view of a washing machine according to a first embodiment of the present invention. FIG. 2 is an enlarged front view of an operation display panel of the washing machine. FIG. 3 is a sectional view of the washing machine. Operation flow chart of water supply process of machine [FIG. 5] Operation flow chart of water supply process of washing machine of the second embodiment of the present invention [FIG. 6] Operation flowchart of water supply process of washing machine of the third embodiment of the present invention [FIG. Explanation of symbols]
6 Washing / dehydrating tub (washing tub)
14 Water absorption pump 16 Water level detection means 33 Bath water setting switch (setting switch)

Claims (1)

A water absorption pump for absorbing water from a bath tub and the like and supplying water to the washing tub via a water absorption hose, a water level detection means for detecting the water level in the washing tub, a setting switch for setting use of the water absorption pump, and the like . A control device that controls operation, and when the use of the water suction pump is set, the control device operates the water suction pump at a set rotational speed, and before a predetermined time has elapsed from the start of operation of the water suction pump. If the water level change of the serial washing tub is below a predetermined value, when the rotational speed of the water pump modified to higher than the set rotational speed, the water level change of the washing tub exceeds a predetermined value, the A washing machine that changes the rotation speed of the water absorption pump to be lower than the set rotation speed, and changes the set rotation speed of the water absorption pump at the next operation to the changed rotation speed .

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