TWI726286B - washing machine - Google Patents

Abstract

[Problem] To provide a washing machine that is difficult to be affected by the fluctuation of the liquid level as the measurement target and can perform stable liquid level detection. [Solution] It is composed of: tank, which stores washing liquid; and tank tray, which is storage tank; and residual quantity detection means, which detects the residual quantity of washing liquid, and residual quantity detection means. Equipped with: a buoy with a magnet, and a magnetic sensor set in the bottom of the tank and at the bottom of the tank tray. The magnetic sensor detects the magnet and detects the washing without contact with the magnetic sensor. The remaining amount of liquid, the buoy, can be moved along with the liquid level of the washing liquid by the pivot connected to the tank, and the magnet is set to the state where the buoy is at the lowest position of the movable range. One of the lower magnetic poles will be arranged opposite to the side of the magnetic sensor.

Description

washing machine

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

Although the nuclear family has been around for a long time, recently, with the declining birthrate and aging, more and more classifications of family members have emerged from one person to a large family of multiple generations. In the same way, the life style also starts from the style of being close to nature and hoping to cooperate with the calendar to eat and sleep with sunrise and sunset, and even does not care about the difference between day and night, but pays more attention to interest or actual benefits. The type of time interval is more diverse.

On the other hand, few people live a life insulated from housework such as washing clothes. On the contrary, there are not a few people who work hard on washing clothes due to all kinds of dirt. However, there are few people who enjoy the laundry process itself. It is hoped to save labor and time as much as possible and pay attention to the requirement and demand system of dirt removal results have a tendency to become stronger.

The automatic injection mechanism of lotion in the washing machine is one of the technologies that helps to save labor and time. In particular, recently, the liquid lotion system has rapidly spread, and even if it is limited to an automatic injection mechanism of liquid lotion, the demand for it is high. In the installation of automatic lotion injection mechanism, it is a technology that needs to detect the remaining amount of lotion. If the remaining amount of lotion is insufficient and continue to wash several times, not only will the dirt not be removed, and if the dirt settles in the cloth, even if the lotion is used later, it will It is extremely difficult to remove the dirt. Therefore, if the remaining amount of lotion is small, it is necessary to notify the user before the next washing.

As a method of detecting the remaining amount in the lotion tank, the method of detecting physical quantities based on the mass and liquid level caused by the remaining amount is simple and effective. Among them, as a means of detecting the liquid level, it can be roughly divided into two types.

One of them is a method of setting a movable part that is displaced in response to changes in the liquid level, and then directly reading the displacement or converting it into a signal and discriminating it.

The other method is to detect and determine the physical quantity that changes in response to the height of the liquid level.

In Patent Document 1 related to the former, the following general structure is described, which is composed of "a pillar 11 with a lead switch 9 built-in, and a pillar 11 arranged around it and moved up and down by the liquid surface to move The internal lead switch 9 is composed of a magnetic buoy 12 for ON/OFF, and a weight 13 arranged at the lower part of the pillar 11", and is constituted as a "buoy switch arranged in the tank, which is formed by the pillar In order to make at least the lower part sink into the liquid in the tank and be placed on the bottom surface of the tank, the lead wire is led out from the support and guided to the outside of the tank".

In Patent Document 2 related to the latter, an electric washing machine is described, which is "equipped with a liquid level detection means with a thermal resistor, and is configured to detect specific changes in the electrical properties of the thermal resistor. Displacement of the liquid lotion in the container". [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Laid-Open No. 4-276522 [Patent Document 2] JP 2006-334204 A

[The problem to be solved by the invention]

In the liquid level detection device described in Patent Document 1, if the buoy is lowered after the pillar is immersed in water, the space between the pillar and the buoy is filled with liquid. In the case of a liquid lotion containing volatile components, it is It will become fixed as the volatile components diverge. In addition, if it is set to float around the height of the liquid without immersing the buoy in water, it is necessary to increase the sliding height range of the pillar and the buoy. Therefore, in order to transmit the magnetic force of the magnetic body to the inside. The reading switch hidden in the pillar cannot fully expand the gap of the sliding part, and it is prone to fixation. On the contrary, if the sliding height range of the buoy is narrowed and the detection can only be carried out at a certain liquid level, then when there is sufficient liquid in the tank (the liquid level is completely placed at a higher level) When the upper limit height of the buoy is higher than the upper limit), the buoy stays at the upper limit height in a submerged state, and it is prone to fixation. In addition, due to the narrowing of the sliding height range of the buoy, there is a permanent magnet near the bottom of the groove, and the lines of magnetic force from the magnet will affect other electrical products in the frame.

In the thermoresistor method described in Patent Document 2, when the lotion tank can be detached from the main body and cleaned, it is necessary to attach and detach the power supply cable to the thermoresistor. The ease of use is poor, and it has also become a safety measure that needs to be considered for the presence or absence of electricity.

In addition, generally speaking, since the internal volume of the tank is directly related to the actual volume that can be filled with liquid lotion, the smaller the occupied volume of the detection means when the tank is full, the better, even if it is When using buoys, the smaller is the better. On the contrary, when the height change of the buoy is used for detection, the stability of the buoy relative to the fluctuation of the liquid level is also necessary.

Therefore, the object of the present invention is to provide a washing machine that is difficult to be affected by the fluctuation of the liquid level as the measurement object and can perform stable liquid level detection. [Means to solve the problem]

In order to solve the above-mentioned problems, the washing machine of the present invention is configured to include: a tank for storing washing liquid; and a tank tray with a storage tank; and a remaining amount detecting means for detecting the remaining amount of washing liquid, The remaining quantity detection method is equipped with: a buoy with a magnet, and a magnetic sensor arranged in the bottom of the tank and at the bottom of the tank tray. The magnetic sensor is used for non-contact detection with the magnetic sensor The magnet is released and the remaining amount of the washing liquid is detected. The buoy is moved with the liquid surface of the washing liquid by a pivot connected to the tank. The magnet is set to be movable at the position of the buoy. In the lowermost state of the range, one of the magnetic poles will be arranged opposite to the side of the magnetic sensor.

In addition, the system is composed of: a tank for storing the washing liquid; and a tank tray, which is a storage tank; and a remaining quantity detection means, which detects the remaining quantity of the washing liquid. The remaining quantity detection means is equipped with There are: a buoy with a magnet, and a plurality of magnetic sensors that are set up in non-contact with the buoy. The magnetic sensor detects the magnet and detects the remaining amount of washing liquid. The buoy is The groove is connected as a pivot, and it can move in a specific trajectory along with the liquid level of the washing liquid. Each of the plural magnetic sensors is relative to the trajectory of the magnet, so as to be opposite to the magnetic pole of the magnet. The way to make side-by-side configuration. [Effects of Invention]

According to the present invention, it is possible to provide a washing machine that is hard to be affected by the fluctuation of the liquid level as the measurement object and can perform stable liquid level detection.

Hereinafter, the drawings are used to describe the embodiments. In the washing process, even in the case of a drum-type washing machine, it is basically the same as setting the inlet and outlet of the laundry basket to the upper side, and accommodating the rotating motor below, and placing the basket in opposition to the installation surface. The so-called vertical type washer and dryer (hereinafter referred to as the vertical type washer and dryer) with a slightly vertical rotation spindle is the same process. Therefore, in the following embodiments, a drum type washer and dryer is used for description. . Fig. 1 is related to the first embodiment of the present invention, and shows a perspective view of the appearance of a drum-type washing and drying machine. In addition, FIG. 2 is a schematic cross-sectional view of the right side of the first embodiment of the present invention, showing the internal structure of the drum-type washing and drying machine.

First, a brief description of the appearance and schematic structure will be given. On the upper part of the base 1h, a side plate 1a mainly made of steel and resin moldings and a reinforcing plate (not shown) are combined to form a skeleton, and a front cover 1c and a lower front cover are installed on it. 1f. The top cover 1e, by which the frame 1 is formed. At the front cover 1c, a door 9 for ingress and egress of laundry 207 is provided, and at the back, a back cover 1d is installed.

On the inner side of the frame 1 shown in FIG. 1, as shown in FIG. 2, an outer groove 2 is provided at the approximate center. The outer tank 2 is supported by a plurality of shock absorbers 5 in the lower part. In the drum 3 rotatably installed at the inner side of the outer tub 2, the door 9 is opened and the laundry 207 is put in. The door 9 itself is the one with the door glass 9a fixed at the door frame 9b, and is installed at the frame body by the pivot 9c (refer to FIG. 1). At the outer periphery of the opening of the rotatable drum 3, there is provided a fluid balancer 208 for reducing the vibration caused by the unbalance of the laundry 207 during dehydration. In addition, on the inner side of the drum 3, a plurality of lifters 209 for lifting the laundry 207 are provided. The rotatable drum 3 is directly connected to the drum driving motor M10a via the main shaft 211 connected to the metal flange 210. At the opening of the outer tank 2, a rubber corrugated tube 10 made of an elastic body is installed. The rubber bellows 10 functions to maintain the water tightness between the outer tank 2 and the door 9. Through this, we seek to prevent water leakage during washing, washing, and dehydration. The rotatable drum 3 is provided with many small holes (not shown) for centrifugal dehydration and ventilation at the cylindrical part of the side wall.

The circulation pump 18 used to pump the washing water up to the upper part of the outer tank 2 and spread over the laundry 207 in the drum 3 is fixed on the base 1h side of the frame lower than the outer tank 2 Place. The washing water starts from the drain port 21 of the water receiving part 54 provided at the lower part of the outer tank, and enters the suction port side of the circulating pump 18 through the wire dust filter 222, and is passed through the circulating pump 18 After the pressure is increased, the water is sprayed into the drum 3 from the spray nozzle 223. In addition, the drain port 21 provided at the bottom of the water receiving part 54 for draining water is communicated with the drain hose 26 through the wire dust filter 222 and the drain valve V1, and can remove the water in the water receiving part 54 drain.

On the other hand, the overflow hose 205 is installed at the front part of the outer tank, and meets the connecting hose (not shown) from the drain port 21 in front of the drain valve V1. That is, if the drain valve V1 is opened, the overflow hose 205 is connected to the drain hose 26. When the safety with respect to the rise of water pressure is more important than the water tightness, that is, when the water volume is increased compared to the specific water level where the overflow hose 205 is installed, Even if the overflow hose 205 is installed on the downstream side of the drain valve V1 and communicates with the drain hose 26 in a manner that can forcibly drain water in any case, it is also There will be no problems.

The air duct 29 that guides the airflow to the laundry 207 in the drum 3 and the air blowing fan 20 as an air blowing means are separated from the outer tank 2 and fixed (not shown) at the frame 1. The blow-out nozzle 203, which is attached to the outer tank 2, is fixed on the upper side of the central axis of the drum 3 that can rotate when viewed from the front of the washer and dryer, and is leaning toward when viewed from the side of the washer and dryer. The position on the front side of the front. The outlet of the aforementioned blowing nozzle 203 and the warm air heater 213 is made by a flexible rubber corrugated tube 212, and the longitudinal direction of the expansion and contraction direction of the outer tank 2 becomes slightly vertical. Connect and absorb the vibration of the outer tank 2. A temperature sensor (not shown) is installed at the drain port 21, the suction port (not shown) of the blower fan 20, and the discharge port (not shown). The warm air heater 213, which is one of the heating means of this embodiment, is used to adjust the air supply temperature according to needs.

Next, a brief description will be given from the washing process to the drying process. Fig. 3 is a process diagram illustrating the operation process of the washing operation (washing-washing-dehydration) in the drum-type washer-dryer of the first embodiment. 4 is a block diagram showing the structure of the control device 100 that controls the washing and drying operation.

The control device 100 (operation control means) controls the motor M10a and the water supply unit 15, and then controls the automatic detergent injection unit 301 according to the settings so as to be able to perform the washing operation, and also performs detection means based on conductivity 4Calculation of the conductivity of the liquid in the outer tank 2 detected, judgment of the presence or absence of softener contained in the liquid (judgment relative to the reference concentration), judgment of the shortening of the dehydration process, A device for judging the shortening of the cleaning process. As shown in FIG. 4, the control device 100 is composed of a microcomputer (hereinafter, referred to as "microcomputer") 110, a drive circuit, operation switches 12, 13, and a conductivity detection means 4 and various sensors. The input circuit, etc., and constitute it. The microcomputer 110 receives the user's operation and various information signals in the washing process and the drying process. The microcomputer 110 is connected to the motor M10a, the water supply solenoid valve 16, the drain valve V1, the blower fan 20, etc. via a drive circuit, and controls the opening and closing, rotation, and energization of these. In addition, in order to notify the user of information related to the drum-type washing machine, the display 14 and the buzzer (not shown) are controlled.

If washing or washing and drying is selected and the operation is started, the lotion that has been put in will be put in or the lotion corresponding to the load determined by the sensing will be put in when it is set to automatically put in the lotion. , And started from the washing project. The amount of lotion injected by the automatic lotion injection unit 301 is estimated based on the discharge amount per unit time at the supply pump 237, which is a compressor, and the operation time of the supply pump 237.

Specifically, the process control unit 112 drives the motor M10a to rotate the drum 3, and causes the laundry weight calculation unit 114 to calculate the weight (cloth amount) of the laundry 207 before water injection. The conductivity measuring unit 115 detects the conductivity (hardness) of the water supplied. In addition, the temperature of the water to be supplied is detected by the temperature sensor T1 provided at the lower part of the outer tank 2 (for example, the drain 21). The detergent amount and washing time determination unit 116 is based on the detected cloth amount, and the conductivity (hardness) of the water obtained by the conductivity measurement unit 115 using the detection value from the conductivity detection means 4 To determine the amount of detergent and the operating time by searching through a map. After that, the process control unit 112 displays the determined amount of detergent and operating time on the display 14. At this time, if the automatic injection of lotion is selected, the specified amount of lotion is automatically injected. The following description is based on the premise that there is an automatic lotion injection setting.

In this embodiment, the washing process is basically divided into a lotion dissolving process, a pre-washing process, a formal washing process, and further, a formal washing process. It is divided into the first official laundry project and the second official laundry project following this. However, even if the various projects are not clearly distinguished according to the course of operation, there will be nothing in terms of function. The problem is that even if part of the operation in the process described later is omitted, there will be no difference in the overall function of the washing process.

The lotion dissolving process is to show the amount of lotion corresponding to the load determined by the cloth amount sensing at the beginning of the wash, and to dissolve the lotion that is injected from the outside or automatically injected by water, and The process of spreading the laundry 207 in the drum 3.

The water that is supplied to the input path 317 (refer to FIG. 2) through the tank tray 302 of the automatic detergent injection unit 301 from the external detergent injection unit 7 is used for washing from the automatic injection unit 301 After the liquid (for example, lotion) is mixed, it is guided to the water receiving part 54 located at the bottom of the drum 3. If the circulating pump 18 is driven, the water of the water receiving part 54 enters the suction port (not shown) of the circulating pump 18 from the drain port 21 through the wire dust filter 222. The washing water boosted by the circulation pump 18 is sent back to the water receiving part 54 from the circulation outlet connected to the outlet of the circulation pump 18 (the circulation path of the lotion dissolving process) ). By repeating this cycle, a high-concentration lotion solution in which the lotion is dissolved with a small amount of water is produced. While the drum 3 is rotated and the laundry 207 is stirred, the high-concentration lotion solution is distributed comprehensively by the circulating pump 18.

Figure 5 is a perspective view of the automatic lotion injection unit. The automatic lotion injection unit 301 is mainly composed of a lotion tank 303, a softener tank 304, a tank tray 302 connected to these via a check valve 313, and a tank tray 302 on the outside of the bottom of the tank tray 302 for each It is composed of a magnetic sensor 310 installed in the tank and a supply pump 237 that feeds the lotion and softener, which is the cleaning liquid, from the check valve 313 into the input path.

Fig. 6 is a cross-sectional view of the lotion tank 303. In addition, the basic configuration and control actions other than the supply action of the lotion or softener are common in the lotion tank 303 and the softener tank 304. Therefore, in the following description, it is used as a representative The description will focus on the lotion tank 303. At the lotion tank 303, a buoy 305 that is rotatably mounted relative to the rotating shaft 314 inside the lotion tank is accommodated. The buoy 305 is further lifted by a magnet 309 inside. The pivot portion 306, the pivot portion 308 supporting the rotating shaft 314 of the buoy 305, and the arm 307 connecting the pivot portion 308 and the floating portion 306 are formed.

The floating portion 306 has a certain sinking amount (for example, 7mm) when the liquid is filled to adjust the floating quality. If the floating portion 306 floats, it will be placed on the magnet. The distance between the bottom surface of the 309 (the bottom side of the lotion tank and the softener tank) and the magnetic sensor 310 that is set in non-contact with the magnet 309 at the bottom of the tank tray 302 is determined according to the magnetic sensitivity The magnetic flux density received by the sensor 310 can obtain the output of the magnetic sensor 310. That is, based on the height of the liquid level, since the position of the bottom surface of the magnet 309 is determined, if the liquid level is stable, the output of the magnetic sensor 310 is also stable. In addition, since the height of the floating portion 306 with respect to the liquid surface is detected by the change of the magnetic flux density, the measurement is performed under the non-contact between the liquid and the magnetic sensor 310. Therefore, the attachment and detachment of the lotion tank 303 and the softener tank 304 from the tank tray 302 can be performed without the attachment and detachment of the electrical wiring. The arrangement of the magnet 309 in the buoy 305 is set in the state that the buoy 305 is positioned at the lowest position of the operating range, and the magnetic poles of the S pole or the N pole are set in the detergent tank 303 and the softener tank 304 The configuration of the magnetic sensor 310 side at the bottom of the slot tray 302.

In addition, the selection of the magnetic pole is selected in accordance with the characteristics of the magnetic sensor 310, but the basic movement of the buoy 305 will not change. With this configuration, even if there is a positional shift between the magnetic sensor 310 and the magnet 309 in the direction of the rotation axis 314, the magnetic pole can be maintained basically toward the magnetic sensor 310 side. Therefore, the variation of the magnetic flux density received by the magnetic sensor 310 is suppressed to be small, and the influence on the output of the magnetic sensor 310 can be reduced. Furthermore, by making the cross-sectional shape of the magnet 309 as necessary as the magnet 309 of the buoy 305 of the lotion tank 303 in FIG. The position of the magnet 309 in the 314 direction and the magnetic sensor 310 are offset to ensure a more stable output of the magnetic sensor 310.

As the lotion is used, the liquid level becomes shallower than the sinking depth of the float 305, and the floating portion 306 is in contact with the bottom surface of the lotion tank 303. In the so-called bottoming state, the magnet 309 and the magnetic sensor 310 are in the closest state. If the liquid is filled more than this state, the floating portion 306 becomes accompanied by the pivot portion 308 as the The central axis has drawn a circular arc-like trajectory in the lotion tank 303 and floated. Therefore, the influence from the tank tray 302 on the magnetic flux around it (in the frame) will become greater, when the floating portion 306 is in a bottomed state (the magnetic pole of the magnet 309 is closest to the inside of the lotion tank 303). The state of the wall). In other states, since the magnet 309 draws a track converging from the side wall or bottom wall of the lotion tank 303 to a certain degree inwardly, it can be The influence of the magnetic flux of electrical parts and the like around the tray 302 is suppressed to be small.

Moreover, in this embodiment, the bottom of the lotion tank 303 is inclined with respect to the height direction of the lotion tank 303, and particularly in the area where the liquid level is low, the degree of reduction relative to the liquid is reduced. The liquid level change is set to be large. With this, when the remaining amount of lotion becomes small, the movement of the magnet 309 relative to the degree of decrease in the liquid can be increased, and therefore the rate of change in the magnetic flux density relative to the magnetic sensor 310 can be increased. Big.

Regarding the shape of the floating portion 306 of the buoy 305, the width of the buoy 305 in the direction of the rotation axis 314 is set to 70% or more of the groove width in the same direction, or relative to the buoy 305 The length in the circumferential direction in the circular motion around the rotating shaft 314 is relative to the length of the buoy 305, and the width of the buoy 305 is set to be 0.7 times or more. When the liquid level is rising, the sinking depth of the floating portion 306 of the buoy 305 is deep, but if the liquid level gradually drops, the sinking amount becomes gradually shallower (the sinking volume is slightly the same) . At this time, if the width of the buoy 305 is secured in advance as described above, when the sinking angle formed by the bottom surface of the buoy 305 and the liquid surface is the same, the amount of change in the sinking depth can be reduced Zoom out. By setting the width of the floating portion 306 of the buoy 305 to 0.7 times or more with respect to the length in advance, the change in the sinking of the floating portion 306 caused by the lowering of the liquid level can be compared to the float 305 up and down. The change of direction is suppressed and stabilized.

For example, at the floating portion 306 with a sinking volume of 7 mL, when the sinking angle is changed from 45 degrees to 30 degrees with a length of 50 mm and a width of 20 mm (0.4 times the length), The sinking depth changes from 35mm to 30.3mm, and becomes a depth change of 4.7mm. On the other hand, in the case of a length of 50 mm and a width of 35 mm (0.7 times the length), the sinking depth was reduced from 20 mm to 17.3 mm, and the change was suppressed to 2.3 mm.

In addition, by setting the width of the float 305 to 70% or more of the width of the lotion tank 303, even if the liquid level fluctuation caused by external disturbance occurs, the width of the free liquid surface is suppressed to 30% As a result, since the system can become less affected by the fluctuation of the liquid level, the operation of the float 305 can be made more stable.

As described above, it is desirable to be able to suppress the influence of external disturbance on the change in magnetic flux density with respect to the magnetic sensor 310 arranged at the bottom side of the lotion tank 303, and also to reduce the liquid level based on the original The ratio of the change in the height direction of the floating portion 306 due to the height change is set to the shape of the floating portion 306 that moves smoothly.

However, since the output of the magnetic sensor 310 may be affected by the fluctuation of the liquid level, etc., it is preferable that the measurement is based on the estimated usage amount obtained from the comparison with the measured value in the past. The estimated discharge amount based on the movable time of the supply pump 237 is used to estimate the current usage amount. Therefore, in this embodiment, the output of the magnetic sensor 310 is read as a change corresponding to the change of the liquid level in an analogous manner.

In the analog method, usually, in order to output without inverting the ground at the S pole and the N pole, the output is often changed to an output that shifts 0 mT to the intermediate voltage value of the applied voltage. For example, when the applied voltage is 5V, the set output when 0mT of the magnetic flux is not applied is 2.5V, but in fact, there may be deviations due to product variations. . Therefore, by applying a correction to the circuit that sets the output in the state where no magnetic flux is applied to 2.5V, the measurement accuracy can be further improved.

Furthermore, in order to remove the difference in the magnetic flux density of the magnet 309 and further improve the accuracy, it is ideal for the output of the magnetic sensor 310 when the buoy 305 is at the lowest point and the aforementioned 0 mT Two points of the output of the magnetic sensor 310 are measured and corrected. Specifically, if the output difference between the two points is determined to be the level (ratio) of the output difference between the two points of the magnetic sensor 310 as a reference, and then follow this ratio to determine Each time the measured output of the magnetic sensor 310 is corrected, the accuracy can be further improved.

FIG. 7 is a perspective view of the tank tray 302 of the automatic lotion injection unit 301 viewed from the upper side. Since the measurement of the change in the output of the magnetic sensor 310 with respect to the change in the magnetic flux density is non-contact, electrical wiring is not required when cleaning the lotion tank 303 from the tank tray 302. The loading and unloading, etc., and can reduce the burden on the user. Furthermore, in the non-contact type, the dirt on the measurement surface will affect the measurement. However, in this embodiment, it is set as a part of the water supply when the lotion is supplied, and the lotion is injected through the externally injected lotion input part. 7 and the tank tray 302 to the water supply path 318 for supplying water to the bottom of the outer tank, and then a part of the water supply or the remaining water supplied to the pump 237 and its surrounding piping (not shown) is taken from the water path through the inlet 315 316 and flow to the periphery of the mounting part of the magnetic sensor 310. With this, since the inner surface of the trough tray 302 can be constantly cleaned, the cleaning performance of the inner wall forming the gap where the magnetic sensor 310 and the magnet 309 face each other can be maintained. The water after passing through the water passage 316 is supplied to the water supply port 2a of the outer tank 2 (refer to FIG. 2 and FIG. 8). In addition, the magnetic sensor 310 is configured to be arranged near the center in the longitudinal direction of the lotion tank, and is installed relative to the installation position of the pivot 308 at the injection door 312 of the lotion tank for the injection of the detergent. The position on the opposite side of the mouth.

The pivot portion 308 is arranged at the upper part of the lotion tank 303 that will not be immersed into the liquid surface even when a prescribed amount of lotion is filled. Specifically, in this embodiment, the pivot portion 308 provided with the bearing portion for receiving the rotating shaft 314 is configured to bridge the groove side surfaces and be fixed to the upper portion of the side surface. Therefore, assuming that even when the cover 311 is removed and the lotion is to be filled, the floating portion 306 of the buoy 305 can be placed in the state of the tank, so the lotion will not be spilled around Situation. In addition, by setting the bottom surface of the floating portion 306 of the buoy 305 facing the magnetic sensor 310 at the buoy 305 without exposing to the outside more than necessary, it is possible to prevent the magnetic flux from being exposed to the outside. The iron component and the like that have an influence adhere to the bottom surface of the floating portion 306.

In the case of filling lotion, since it can also be filled while confirming the sinking volume of the floating portion 306 of the float 305, it is not necessary even when the cover 311 is closed after filling. Worry about whether the lotion will overflow. In addition, when the cover 311 is removed, since the system can also confirm the dripping of the lotion from the pivot portion 308, and if it is a colored lotion, it can also be splashed onto the pivot portion. The trace at 308 is confirmed, so it is easy to judge the necessity of wiping and cleaning or the adjustment of lotion filling amount.

The output of the circulating pump 18 is a specification that can sufficiently pump the washing water corresponding to the maximum washing load up to the spray nozzle 223 arranged above the outer tank 2. Therefore, if it is circulated through the circulation path of the aforementioned lotion dissolving process, the required power of the circulation pump 18 will eventually be converted into heat energy and the temperature of the high-concentration lotion solution will rise. The generated high-concentration lotion liquid is continuously pumped up to the spray nozzle 223 arranged above the outer tank 2 in the subsequent process, and is spread to the laundry 207 in the drum 3. At this time, at the exit of the circulating pump 18, it is necessary to provide a path leading to the top of the outer tank 2 and a path to return to the water receiving part 54 without spreading as described above. However, at In this embodiment, the outlets (refer to Figure 2) connected to the respective paths are provided on the outer periphery of the casing of the circulating pump 18 in advance, and the rotation direction of the circulating pump 18 is switched to respond to The direction of rotation is to discharge from the first connected discharge port side, and the path is switched. Or, even if the discharge port of the circulating pump 18 is set as a single place, and the outlet is diverged on the downstream side of it and the flow path is switched, there will be no problem in function.

In the pre-washing process, usually in the outer tank 2 there is washing 207 infiltrated with the lotion liquid, and there is a small amount of lotion liquid at the water receiving part 54 at the bottom of the outer tank 2. If the drum 3 is rotated and the washing is continued to be slapped and washed based on the rolling action of "after lifting the washing 207 all the way to the upper part of the drum 3, it is dropped to the bottom by gravity", it will be infiltrated to The lotion liquid in the laundry 207 is squeezed out, so the circulating pump 18 is intermittently driven as needed and the lotion liquid is spread to the laundry 207 again. In this operation, too, if the so-called washing temperature of the washing water and the laundry is increased, the washing performance can be improved.

In response to the washing process, for the washing 207 dispersed with high-concentration lotion liquid, the air flow from the blower fan 20 is heated by the warm air heater 213 and then blown. , Come to wash while heating the laundry 207. Since the laundry 207 is in a state of water-retaining high-concentration lotion liquid, compared to the case where air occupies the fiber voids of the laundry 207, the heat conduction system is better, and it can be heated efficiently. In addition, by increasing the temperature, the surface tension of the high-concentration lotion liquid to be retained can be reduced. Furthermore, if the temperature of the laundry 207 increases, since the air in the fibers swells the fibers, it can further promote the penetration of the fibers by the high-concentration lotion solution. With this, more dirt can be separated from the fiber in a short time. The separated dirt is quickly dispersed in the high-concentration lotion liquid that is water-retained, so it can be prevented from re-aggregating and re-attaching.

In addition, depending on the difference in dirt, there may be cases where the amount of washing water splashed on the washing 207 is small (the detergent concentration is thick), and it will be removed better. On the contrary, when the washing water is If the amount of water is high (the lotion concentration is light), it will be removed better. There are differences in the decontamination motive force acting on the two, which can be explained generally as follows. The surfactant, one of the main components of the lotion, promotes the wetting of the fiber, and then pulls the surface potential of the dirt and the cloth to the negative polarity of the surfactant, so that it becomes negatively charged. The role of. By this, it has the effect of increasing the adverse effects between the dirt floating from the laundry and the interaction between the fiber and the dirt. Therefore, in the cleaning of solid dirt attached with Van der Waals force as the main body, if the concentration of the surfactant is thicker, the above-mentioned reaction force against the Van der Waals force can be strengthened. Therefore, solid dirt and the like are generally easier to remove if the concentration of the surfactant is higher.

On the other hand, the so-called water-soluble dirt, which is easily dissolved in water and washing water, depends on the concentration of the dirt that becomes a solute relative to the washing water, which is a solvent, and the dissolution rate varies. In a liquid with a light concentration of dirt, the dissolution rate is higher, but in a thick liquid, the dissolution rate will decrease. Therefore, if the concentration of the dirt dispersed in the washing water contained in the laundry 207 is diluted in advance, the dirt can be more easily removed from the laundry 207. In other words, it is necessary to replace the washing water contained in the laundry 207 with washing water with an extremely low dirt concentration, or to perform treatment to dilute the dirt concentration. That is to say, the function of the surfactant for this kind of dirt is more important because it is more important to disperse and maintain the dirt peeled off from the laundry 207 and prevent aggregation or reattachment. Therefore, as long as it satisfies a certain The degree of detergent concentration is less dependent on the detergent concentration for soil removal.

Moreover, no matter what kind of contamination it is, raising the cleaning temperature will result in an increase in the cleaning power. For the former, by increasing the temperature, the molecular diffusion in the washing water is promoted, so more surfactant can be attached to the cloth surface or the dirty surface, and the reaction force can be enhanced. Regarding the latter, it is also the same that the diffusion system of the surfactant in the lotion solution is improved, which can promote the wetting of the cloth surface. Furthermore, the system can also effectively diffuse the separated dirt.

In addition, a circulating pump (not shown) with a smaller flow rate than the circulating pump 18 may be additionally provided, and the circulating pump may be pumped up from the water receiving part 54 and near the outlet of the blowing fan 20. Spread in the warm wind to mix the droplets in the warm wind and spread to the laundry 207. During the washing process, if the water supply is added until the normal circulation level can be ensured, and the circulation pump 18 is used for spreading, the temperature of the laundry 207 will drop sharply. However, if it is set to this In this configuration, a small amount of circulating water is added to the warm air and spread, since the water contained in the laundry 207 can be exchanged comprehensively and only slightly, the laundry 207 can also be suppressed. The temperature drops urgently, so the cleaning performance can be further improved.

In the subsequent formal laundry project, additional water supply is performed at the time point when the pre-washing project ends, and the water volume of the water receiving part 54 is increased and the water level rises. This water level is set to a water level sufficient for the continuous spraying of washing water from the water receiving part 54 by the circulating pump 18 from the spray nozzle 223 on the upper part of the outer tank. The amount of detergent to be input calculated based on the load or water hardness can also be divided into the aforementioned detergent dissolving process and the formal laundry process for input. For example, in terms of cleaning, the cleaning temperature is more effective than the detergent concentration. It is ideal to perform "by efficiently increasing the water temperature and increasing the water temperature when the amount of washing water is less. After the dirt is removed, the addition of the remaining lotion and water relative to the specified amount will make the water temperature lower than the first half, but the concentration of the lotion will be higher than that of the first half. The effect of the concentration of the lotion is the operation of "focusing on the removal of large stains".

In addition, it is also possible to provide a special course that increases the amount of the accumulated lotion input divided and injected in all the washing processes more than the prescribed amount and increases the concentration of the lotion as a whole. The dispersion from the spray nozzle 223 may be continuous or intermittent. Specifically, during the period in which a large amount of dirt still adheres to the inner side of the laundry 207, by continuously spreading and promoting the agitation of the washing water, it is the washing water that can hold the water in the washing 207 Constantly exchange for washing water with low dirt concentration. After that, after almost all the dirt is removed, the cleaning efficiency of removing the remaining dirt with the mechanical force of flapping and washing as the main body is better. Therefore, it is ideal that the second half of the dispersion should be intermittent in a way that does not interfere with the mechanical force.

In addition, by making the driving force of the circulating pump 18 intermittent, since the amount of power consumption can be suppressed, it is also ideal from the viewpoint of energy saving. In addition, the water spray nozzle 223, which is attached to the outer tank 2, is fixed on the upper side of the central axis of the drum 3 that can rotate when viewed from the front of the washer and dryer, and when viewed from the side of the washer and dryer. At a position close to the front side of the front surface, the spraying range from the spray nozzle 223 is set to a wide angle with respect to the radial direction of the drum 3 and has a spreading structure. In this formal washing process, the laundry 207 stored in the lower part of the drum 3 is lifted by spreading in a wide range and by the rotation of the drum 3, and then dropped from the upper part of the drum 3 , To impart mechanical force to the laundry 207, and perform flapping and washing. If the diameter of the drum is larger, the complementary effect of spreading and flapping laundry in a wide range can be obtained, and the time of the formal laundry project can be shortened. In this project, essentially, there is no difference in the use of warm air in order to increase the washing temperature of the laundry and the washing water as in the pre-washing project. The warm air blowing nozzle 203 and the water dispersing nozzle 223 are arranged to face the central axis when the washing and drying machine is viewed from the front. Even if it is caused by the increase of the water level in the drum 3, the amount of circulating water relative to the rotating pump with the same number of rotations is increased, but it is also caused by the accompaniment of water droplets caused by warm wind and direct contact with the water flow. Foaming is used as a restraint.

In addition, in this embodiment, the formal washing process refers to the first formal washing process and the second formal washing process performed after the first formal washing process. At the end of the first official laundry project, the amount of water supplied to the second official laundry project is set to be more than that of the first official laundry project. The circulating flow of the circulating pump 18 of the second official laundry project is set to be greater than that of the first official laundry project. It is set to be larger than the circulating flow of the circulating pump 18 in the first formal laundry project. Furthermore, the rotation speed of the drum-driven motor M10a of the second formal washing process is set to be lower than the rotation speed of the motor M10a of the first formal washing process.

The formal laundry process is mainly performed to separate the dirt from the laundry 207 on the inside of the clothes or pockets that are difficult to wash in the laundry process before the water volume is low. Therefore, in order to remove various contaminants, it is more desirable to set a combination of at least two or more processes in which the water volume and the rotation speed of the drum drive motor M10a are changed as described above. In the first formal washing project, since the rotation speed of the drum 3 is increased, the laundry 207 that is lifted to the top together with the rotation of the drum 3 will not all fall to the bottom, most of which It is caused by centrifugal force and rotates together with the drum 3 while being attached to the inner wall of the drum 3. Since the washing water is spread from the circulation pump 18 at this point, the flow rate of the washing water through the washing 207 is increased. By this, it becomes easy for the dirt to be eluted from the laundry 207.

In the second formal washing process following this, the rotation speed of the drum 3 is set to be lower than that of the first formal washing process, and the centrifugal force is weakened and the adhesion of the laundry 207 to the drum 3 is suppressed as much as possible. Set as a project that pays attention to the flapping and washing from the top of the drum 3 to the bottom. With this, by applying mechanical force to the laundry 207, it is possible to easily remove mainly hydrophobic stains. When the laundry 207 is knocked down from the top of the drum 3 to the bottom, by increasing the level of the washing water staying below the drum 3 and increasing the amount of circulating water, it is also possible to prevent the laundry 207 from being generated. The above direct collision and the fiber being compressed.

As mentioned above, in this embodiment, the combination of the first formal washing process and the second formal washing process is set as an operation mode that suppresses the black spots and hardening of the laundry 207. The following is based on its mechanism To explain. After the first official laundry project, the second official laundry project is carried out. However, the water level WL2 of the second official laundry project is higher than the water level WL1 of the first official laundry project (WL1<WL2). That is, by increasing the amount of the washing water in the outer tub 2, the dirt peeled off from the washing 207 can be dispersed in the washing water, and it is possible to treat the peeling from the washing 207. The "black spots on the laundry" caused by the dirt re-adhering to the laundry 207 is suppressed.

In addition, the rotation speed DR2 of the drum 3 in the second formal washing process is set to be slower than the rotation speed DR1 of the drum 3 in the first formal washing process (DR1>DR2). By setting the rotation speed DR2 of the drum 3 to be slower than the rotation speed DR1, the laundry 207 accumulated in the lower part of the drum is lifted by the rotation of the drum 3 and dropped from the upper part of the drum 3 When the time, the position at which it starts to fall becomes lower. In other words, the falling impact (mechanical force) applied to the laundry 207 subjected to flapping and washing is suppressed, and the "hardening of the laundry" can be suppressed.

In addition, by increasing the water level WL2, the impact of falling (mechanical force) is also suppressed, and the "hardening of the laundry" can be suppressed. On the other hand, the rotation speed DR1 of the drum 3, even if the laundry 207 adhered to the inner wall of the drum 3 due to centrifugal force, will be caused by gravity until it is lifted upward. All of them are peeled off and fall to rotate at a faster rotation speed (centrifugal force>gravity), and the structure is configured so that all the laundry does not perform the operation of falling like flapping and washing, and it will not cause a problem. That is, it is also possible to set it as an operation that suppresses flapping and washing as much as possible, and allows a larger amount of circulation to pass through the laundry 207 than in a normal washing operation to perform washing.

However, although there is a risk of lowering the washing performance caused by flapping washing, on the other hand, by setting the flow rate PF2 of the circulation pump 18 of the second formal washing process to be higher than that of the first formal washing process The flow rate PF1 of the circulating pump 18 is larger (PF1<PF2), which can ensure the cleaning performance caused by the water flow. For example, the circulating flow rate of the circulating pump 18 is ideally set at 30 L/min or more and 80 L/min or less. In addition, the operating time (T1) of the first official laundry project (T1) and the operating time (T2) of the second official laundry project are more ideal, so that the operating time (T2) of the second official laundry project will be compared with that of the first official laundry The operation time of the project (T1) and the longer way to set (T1<T2). With this structure, it is possible to further suppress "hardening of laundry".

In addition, in the control of the actual washing process, the turbidity determination unit 117 and the threshold value memory unit 118 are mainly used to perform control as follows. Here, the turbidity determination unit 117 has a function of determining the degree of soiling of clothes (hereinafter referred to as turbidity) based on the electrical conductivity measured by the electrical conductivity measuring unit 115 and the like. The threshold value memory unit 118 has a function of memorizing the threshold value used by the turbidity determination unit 117 when determining the degree of soiling (turbidity) of the clothes. Before and after the first formal washing process, the conductivity measuring unit 115 measures the conductivity EC1 of the washing water. In addition, when measuring the electrical conductivity, it is ideal to make the water supply to the outer tank 2 caused by the water supply solenoid valve 16, the circulation caused by the circulation pump 18, and the rotation of the drum 3 caused by the motor M10a. Stop.

The turbidity determination unit 117 determines whether the difference between the electrical conductivity EC1 measured before and after the first actual washing process is greater than or equal to the threshold value stored in the threshold value memory portion 118. If it is no (lower than the threshold), it is judged that there is little soiling, and if it is yes, it is judged that there is too much soiling, and proceed to the second official laundry process.

The second formal washing process is set as the above-mentioned general water level to be higher than the first formal washing process, and furthermore, the circulation flow of the circulating pump 18 is increased. That is, when the laundry 207 is lifted above the drum 3 and knocked down to the bottom, the laundry 207 collides with each other and compresses the fibers. However, if the process is longer, the hardening system of the laundry 207 will tend to increase. Therefore, when there is less soiling, it is desirable to shorten the second formal laundry process as much as possible. Therefore, when it can be judged that the dirt is low, the operating time of the second main laundry process is adjusted to be short. In addition, the determination of turbidity can also be used in the re-evaluation of the switching sequence between other projects or the running time of each project.

In the washing process, the drain valve V1 is opened to drain the washing water, and then the drain valve V1 is closed, and the washing water is supplied to the outer tank 2 until it reaches a specific water level. If the automatic injection of softener is set, it will be injected in the same way as the automatic injection of lotion in the last cleaning process in the cleaning process. The water supplied to the manual softener input part and the tank tray is guided to the water receiving part located at the bottom of the drum 3 after the softener from the automatic detergent injection unit 301 is mixed in 54 locations. After that, the drum 3 is rotated, and the laundry 207 and the washing water are stirred for washing.

After the automatic injection, the remaining amount is detected for both the lotion and the softener. As the timing, it is at a timing where there is no electrical noise to the magnetic sensor 310 and the fluctuation of the floating portion 306 of the buoy 305 caused by the vibration of the liquid surface or the timing to the extent that it can be corrected. get on.

The water supply path 50 and the conductivity detection means 4 used in the water supply during the washing process and the washing process and the conductivity measurement of the washing water and the washing water in the process are described. FIG. 8 is a perspective view of the outer tank 2 viewed from the front side of the main body. The outer tank 2 is provided with an outer peripheral wall 51 and a bottom wall 52. At the back surface 53 (inner surface) of the bottom wall 52 of the outer tank 2, there is formed to guide the liquid containing water, lotion, bleach, etc. from the water supply port 2a to the lower part of the outer tank 2. Water supply path 50 (ditch 55). Here, the connecting portion where the inner diameter of the cylindrical outer peripheral wall 51 gradually decreases from the outer peripheral wall 51 to the bottom wall 52 is assumed to be included in the bottom wall 52.

The water supply path 50 is a path for guiding the water supplied to the upper part of the outer tank 2 to flow to the water receiving part 54 formed at the inner bottom of the outer tank 2. This water supply path 50, for example, is provided with a water supply port 2a formed at the upper portion of the outer tank 2 and for supplying liquid into the outer tank 2, and formed at the bottom wall 52 of the outer tank 2 for supplying liquid from the water supply. The opening 2a is configured to guide the groove 55 at the lower part of the outer tank 2 and the covering member 61 that covers the lower end of the groove 55 and forms a pipe. In addition, the covering member 61 may not be provided.

The groove 55 extends from the water supply port 2a downward in the vertical direction, and is formed into a slightly curved flow path (water supply path 50) that is gently curved toward the lower part of the outer tank 2. The ditch 55 is formed in the shape of a U when viewed in the longitudinal section, and the water supplied from the water supply port 2a to the outer tank 2 flows near the deep side corner of the rectangular section, and there is no from the ditch 55 Diffusion into the outer tank 2 inside.

The covering member 61 is a strip-shaped plate body bent on a plane corresponding to the shape of the groove 55. As the material of the covering member 61, for example, PP (polypropylene) is used in the same manner as the outer tank 2. On both sides of the groove 55 of the outer tank 2, a stepped portion (illustration omitted) that is retreated further to the rear than the back surface 53 is formed, and the stepped portion (illustrated omitted) is formed on this stepped portion (illustration omitted). The covering member 61 is arranged, and the upper surface (front surface) of the covering member 61 does not protrude further forward than the back surface 53. The covering member 61 is fixed to the outer tank 2 by screw members (not shown in the figure), etc., and is formed with water supply in the holes provided in the plurality of places on both sides of the strip-shaped plate body. The pipeline of path 50.

The conductivity detection means 4 is installed at a position where the water supplied from the water supply port 2a first touches. That is, the system is installed at a position where the water supplied from the water supply port 2a will flow down from the groove 55 to the water receiving portion 54. Therefore, the conductivity detection means 4 can accurately measure the conductivity of the water when tap water is being supplied. In the case where lotion or softener is supplied, the same is true for the conductivity detection means 4, which can detect that lotion or softener is contained in the water. In addition, since the conductivity detection means 4 is arranged inside the water receiving portion 54, the aforementioned lotion dissolving process can detect the conductivity of the water in which the lotion is dissolved.

In addition, the conductivity detection means 4 is a sensor that detects the conductivity of the tap water before washing and the washing water during the washing operation (washing, washing, dehydration), and is a sensor base made of synthetic resin It is equipped with a pair of electrodes (not shown). The electrode, for example, by being in the shape of a flat plate, can ensure a wider electrode area than a rod-shaped electrode, and can be used for stable conductivity detection. If the conductivity detection means 4 is used, since it can determine the presence or absence of lotion or softener in the washing water or washing water, it can also be used to perform the lotion or softener caused by the automatic lotion injection unit 301. Confirmation of the degree of softener input.

Specifically, it monitors whether the concentration of the washing water caused by the amount of detergent estimated based on the driving time of the supply pump 237 matches the concentration detected by the conductivity detection means 4, and performs the monitoring in advance. memory. For example, if the operation with a large difference is continued for multiple times, it is determined that the lotion supply from the lotion automatic injection unit 301 is not good, and a report is made to the user.

In the dehydration process, the drain valve V1 is opened to drain the washing water in the outer tank 2, and then the drum 3 is rotated and the washing 207 is centrifuged for dehydration. As long as the number of spin-drying rotations cannot be balanced with the laundry 207 and the current value of the motor M10a exceeds the upper limit, it should be increased to the set number of rotations corresponding to the load. Even if part of the dehydrated water is rolled up to the side of the air duct 29, it is also due to the corrugated hose 215 connecting the back part of the outer tank 20 and the lower part of the air duct 29 and the outer tank side mounting part 18 , Is added with an inclination that descends from the air duct 29 toward the back of the outer tank 20, so it can be quickly returned to the outer tank side. If the number of spinning rotations is increased and the drum 3 rotates at a high speed, the vibration system will also be transmitted to the outer tank 20, and the outer tank 20 itself will also make a little vibration.

Since the air supply duct 29 is fixed to the frame 1, the bellows hose 215 connecting the back part of the outer tank 20 and the lower part of the air supply duct 29 is linked and absorbs a part of the vibration. Furthermore, along with the high-speed rotation of the rotating drum 3, the vibration is also transmitted to the door 9 side. However, the rubber bellows tube 212 of the fan outlet duct can absorb the vibration of the blower fan 20 and prevent Its spread.

In the first half of the drying process, as shown in Fig. 2, the air heated by the adiabatic compression caused by the blower fan 20 is blown out into the rotating drum 3 and blown through the nozzle 203 to make it and The laundry 207 exchanges heat, and moisture is evaporated from the laundry 207. The high-humidity air containing the evaporated moisture is guided to the suction port of the blower fan 20 through the air supply duct 29, and after the pressure is increased again, the air is blown into the rotating drum 3. The suction valve 204 forms a part of the wall surface of the air supply duct 29 and is set in a fully closed state which isolates the inside and the outside of the air supply duct 29. When the high-humidity air at the outlet of the rotating drum 3 passes through the outer tank 2 and the air supply line 29, if it exchanges heat with the outer tank 2 and the air supply line 29 and becomes below the dew point temperature, it will reduce the saturated vapor pressure A corresponding amount of moisture condenses on the wall surface of the outer tank 2 and the air supply duct 29. The moisture condensed at the air supply duct 29 will eventually accumulate in the bellows hose 215 from the lower part of the air supply duct 29. However, due to the addition of the air duct 29 toward the back of the outer tank 20 Because of the downward slope, the condensed water can also be transferred to the vicinity of the drain port 39 through the outer tank 2 all the time. When you want to increase the amount of condensation and shorten the drying time, even if you install a cooling water diffuser (not shown) at the upper part of the air supply duct 29, and diffuse water in the air supply duct 29, the The air is forcibly cooled to below the dew point and dehumidified without any problems (combined use of water-cooled dehumidification).

In the second half of the drying process, the suction valve 204 and the drain valve V1 are opened. In Fig. 2, the air flow movement in the washing and drying machine in the second half of the drying process is shown. The suction valve 204 located on the suction side of the blower fan 20 is opened so as to bend toward the inside of the blower duct 29 (inside the air path). The degree of opening θ is relative to the fully opened state θT in which the air path of the air supply duct 29 is roughly blocked (ignoring the degree of leakage). In this embodiment, the opening is roughly half open (0＜θ＜θT ). The air in the frame outside the air supply duct 29 is sucked in from the air suction valve 24 and mixed with a part of the circulating air to blow air into the rotating drum 3. The air pushed out from the rotating drum 3 is discharged to the drain port 21 through the drain hose through the drain hole. In the case of a general drain trap 202, since the height of the water seal is about 50-80mm, at the beginning of the project, the exhaust valve 204 is set to fully open and the pressure in the drum is increased to break it in advance. Water seal. In order to break the water seal, the pressure on the side of the drain hose 26 needs to be about 1000 Pa or more. Therefore, it is preferable to appropriately increase the number of rotations of the blower fan 20 to increase the pressure. In addition, as the drying progresses, condensed water will be generated and will gradually accumulate in the drain trap 202. Therefore, the aforementioned action of breaking the water seal is performed at a certain interval.

The exhaust from the rotating drum 3 is exhausted through the connection hose from the drain hole to the drain valve V1 and the overflow hose 205. On the other hand, the intake air is mainly introduced from the bottom of the frame to the intake valve 204 located in the upper part of the frame, because it passes through the surroundings of the rotating drum driving motor M10 and the fan motor 214. Therefore, it becomes high temperature and is introduced into the air supply duct 29 from the air intake valve 204. Therefore, normally, it is not necessary to energize the warm air heater 213 provided at the outlet of the blower fan 20. In the exhaust path from the rotating drum 3 through the overflow hose 205 and exhausted from the drain valve V1, the outer tank side mounting part on the back of the outer tank 2 and the bellows hose 215 are included. However, from the outside The back surface of the groove 2 is inclined upward with respect to the air duct 29, and the inflow angle of the exhaust gas into the air duct 29 becomes an obtuse angle larger than 90 degrees, so that the air path loss of the exhaust path can be reduced.

The drying judgment is determined by measuring the temperature T1a of the drain outlet in the lower part of the outer tank by the drain temperature sensor T1 at the beginning of the drying or within a predetermined time from the start of a certain operation, and by external air The temperature sensor T4 measures the outside air temperature T4a (setting of the initial temperature). After that, after a predetermined time corresponding to the load has elapsed, the temperature T1b and the outside air temperature T4b at the bottom of the tank for the end judgment are measured, and the difference between the initial temperature and the end judgment temperature is obtained. Difference (ΔT1=T1a-T1b, ΔT2=T2a-T2b), and then confirm whether the temperature difference (ΔT1-ΔT2) is above a predetermined temperature, and judge the end of drying.

After drying, the pressure on the side of the drain hose 26 is kept high compared to the pressure on the side of the drain 21, and the number of rotations of the blower fan 20 is reduced to a pressure level that does not break the water seal. , And open the water supply solenoid valve (not shown) to make the water flow to restore the water seal of the drain trap 202, and the drying process is ended.

In this way, after drying, the pressure on the side of the drain hose 26 is maintained at a certain level or higher, and water is supplied to the drain hole through the drain hose 26, which can act against the odor from the drain hole. Suppress and restore the water seal of the drain trap 202. In addition, the recovery of the drain trap 202, as long as the pressure on the drain hose 26 side is kept high, no matter it is at the end of the drying operation (exhausting the drain hose) or after the end of the drying operation It can be.

The timing of the remaining amount detection in the washing and drying operation of this embodiment is basically to be able to reliably avoid the liquid level fluctuation caused by the vibration of the frame and the electricity caused by the action of the composing machine. "Immediately after the main power is turned on" for the interference of sexual noise is ideal. At this point in time, if there is no remaining amount, a report is made. In response to needs, after the lotion or softener is put in, there is no influence on the power supply of the machine or the remaining amount detection is not affected, and the remaining amount is judged. Immediately after the washing operation, the remaining amount is confirmed. If there is no remaining amount, the report is made at this point in time. Furthermore, in the case of the washing and drying operation, it is preferable to confirm the remaining amount at the end of the drying time (after the end of the washing and drying operation), and report if there is no remaining amount.

FIG. 9 is a cross-sectional view showing a modification of the lotion tank 303 used in the present invention. In this embodiment, the three magnetic sensors 310 are arranged offset from the float 305 in the height direction of the groove. Specifically, the buoy 305 moves in a manner of drawing a circular arc through an arm 307 of a certain length relative to the rotating shaft 314. Therefore, a concave portion along the circular arc track is provided in the groove, and At the outer surface of the concave portion, the magnetic sensor 310 is provided with the height changed. With this configuration, the output of each magnetic sensor 310 will change in response to the change in the height of the float 305, and therefore, the amount of liquid in the tank can be detected with a wider range. Also, in this embodiment, although the number of magnetic sensors is set to three, it is set in accordance with the shape of the groove or the movable range of the floating portion 306 of the float 305, so the number is Department is not restricted.

FIG. 10 is a perspective view of the automatic lotion injection unit 301 according to the second embodiment of the present invention. In this embodiment, the structure is mounted on the front face mask 1c side of the vertical washing and drying machine. With this structure, the lotion tank 303 and the softener tank 304 can be attached to and detached from the tank tray 302 more easily. 11 is a cross-sectional view of the lotion tank 303 and the softener tank 304 of the second embodiment. The lotion tank 303 and the softener tank 304 are arranged side by side in the direction in which the float 305 in the tank opposes. With this configuration, the slot installation space is minimized as much as possible, and furthermore, the magnetic flux around the slot tray 302 caused by the movement of the magnet 309 of the floating portion 306 of the buoy 305 can be suppressed. The influence is suppressed to be smaller.

301: Lotion automatic input unit 302: Slot tray 303: Lotion Tank 304: softener tank 305: Buoy 306: Floating part 307: Arm 308: Pivot 309: Magnet 310: Magnetic Sensor 311: cover 312: Throw in the door 314: Rotation axis

[Figure 1] is a perspective view showing the appearance of the washing machine of the embodiment of the present invention. [Fig. 2] is a schematic cross-sectional view of the right side showing the internal structure of the washing machine according to the embodiment of the present invention. [Fig. 3] It is a block diagram showing the structure of the control device of the washing machine in the embodiment of the present invention. [Fig. 4] It is a process drawing explaining the operation process of the washing operation in the washing machine of the first embodiment. [Fig. 5] It is a perspective view of the automatic detergent injection unit in the washing machine of the first embodiment. [Fig. 6] is a cross-sectional view of the detergent tank in the washing machine of the first embodiment. [Fig. 7] It is a perspective view of the trough tray in the washing machine of the first embodiment as viewed from the upper side. [Fig. 8] It is a perspective view of the outer tank in the washing machine of the first embodiment as viewed from the front side of the main body. [Figure 9] is a cross-sectional view showing a modified example of the detergent tank of the washing machine according to the embodiment of the present invention. [Fig. 10] It is a perspective view of the automatic detergent injection unit in the washing machine of the second embodiment. [Fig. 11] is a cross-sectional view of the detergent tank and the softener tank in the washing machine of the second embodiment.

303: Lotion Tank

306: Floating part

307: Arm

308: Pivot

309: Magnet

310: Magnetic Sensor

311: cover

312: Throw in the door

313: Check Valve

314: Rotation axis

Claims (6)

A washing machine, characterized in that it is provided with: a tank for storing washing liquid; and a tank tray for accommodating the aforementioned tank; and a remaining quantity detection means for detecting the remaining quantity of the aforementioned washing liquid, and the aforementioned remaining quantity detection The method is provided with: a buoy equipped with a magnet, and a magnetic sensor arranged in the bottom of the groove and at the bottom of the groove tray. The magnetic sensor is detected in a non-contact manner with the magnetic sensor The magnet is taken out and the remaining amount of the washing liquid is detected. The buoy is able to move with the liquid level of the washing liquid by means of a pivot connected with the tank. The magnet is set as In a state where the buoy is positioned at the lowermost portion of the movable range, one of the magnetic poles will be arranged opposite to the side of the magnetic sensor. The washing machine described in claim 1, wherein the magnetic sensor is arranged near the center in the longitudinal direction of the groove, and is installed in the groove with respect to the position of the pivot shaft. The position on the opposite side of the washing liquid inlet. The washing machine described in item 1 of the scope of patent application, wherein the buoy is configured to be relative to the installation position of the pivot It can only move to the side opposite to the aforementioned washing liquid input port side. The washing machine described in claim 1, wherein the buoy is provided with a floating portion that floats as it sinks, and an arm extending from the pivot to the floating portion, and the float The part is equipped with the magnet, and the pivot is to set the other end of the arm at the upper part of the tank that will not be flooded even when the prescribed maximum amount of lotion is filled. A washing machine, characterized in that it is provided with: a tank for storing washing liquid; and a tank tray for accommodating the aforementioned tank; and a remaining quantity detection means for detecting the remaining quantity of the aforementioned washing liquid, and the aforementioned remaining quantity detection The method is provided with: a buoy with a magnet, and a plurality of magnetic sensors arranged in non-contact with the buoy. The magnetic sensor detects the magnet and the remaining amount of the washing liquid , The aforementioned buoy is a pivot connected with the aforementioned tank to be able to move along a specific trajectory along with the liquid level of the aforementioned washing liquid, and the aforementioned plural magnetic sensors are individually opposed to the aforementioned magnet The aforementioned tracks are arranged side by side so as to face the magnetic poles of the aforementioned magnets. For example, the washing machine described in item 1 or item 5 of the scope of patent application, wherein the buoy can move on a specific track relative to the rotation axis of the pivot, and the cross-sectional shape of the magnet is The length in the direction of the rotation axis has a longer shape with respect to the length of the trajectory drawn by the rotation axis.

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