TW201109493A - Washing machine - Google Patents

Abstract

A washing machine is provided with an outer tub (24) which is supported within a housing (21), an inner tub (25) which is rotatably provided within the outer tub (24) and contains and stirs laundry, a circulation path (37) which sucks a wash liquid held in the outer tub (24) and returns the wash liquid again to the inside of the outer tub (24), and a circulation pump (39) which is provided in the middle of the circulation path (37) and circulates the wash liquid. Also, a wash-liquid-condition detection section (40) which detects the condition of the wash liquid is provided in the middle of the circulation path (37), and this enables a sufficient amount of circulation of the wash liquid flowing through the wash-liquid-condition detection section (40) to be ensured without dependent on the operation of the inner tub (25). As a result, the accuracy of detection of the degree of soiling of the wash liquid can be maintained at a high level without a reduction in the cleaning performance of the washing machine.

Description

201109493 VI. INSTRUCTIONS: I: Inventor's Technology City: j Field of the Invention The present invention relates to a washing machine that operates in accordance with the state of the washing liquid. [Background of the Invention] The washing machine of the prior art is disclosed, for example, in a washing machine disclosed in Japanese Laid-Open Patent Publication No. Hei-4-240485 (Patent Document 1). Fig. 10 is a cross-sectional view showing the washing machine disclosed in the patent document. As shown in Fig. 10, the washing machine includes a frame 1, an outer groove 2 supported inside the frame 1, a bottomed cylindrical inner groove 3 rotatably provided inside the outer groove 2, and an inner groove. 3 Rotating drive motor 4. On the outer side of the outer tank 2, a circulation path 5 for washing liquid circulation is provided, and a turbidity sensor 6 for detecting the turbidity of the washing liquid is attached to the circulation path 5. The washing liquid is circulated through the circulation path 5 by the rotation of the inner tank 3. Thereby, the lotion, the dirt, and the like are not accumulated in the bottom of the outer tub 2. Further, the concentration of the washing liquid in the outer tank 2 and the washing liquid in the circulation path 5 is uniformized. Since the concentration of the washing liquid is uniformized, the degree of contamination of the washing liquid can be detected by detecting the turbidity of the washing liquid. The control unit 7 determines the dirt of the laundry based on the degree of contamination of the detected washing liquid. The control unit 7 shortens the washing time when the amount of dirt is small, and the washing time is controlled to be the most appropriate. In the above conventional washing machine, the washing liquid is circulated through the circulation path 5 by the rotation of the inner tank 3. Therefore, in order to sufficiently ensure the circulation amount of the washing liquid, it is necessary to increase the rotation speed of the inner tank 3. On the other hand, the inner tank 3 has a stirring as a spin

S 201109493 The function of the mixing part of the washing. That is, the laundry is lifted by the rotation of the inner tank 3, and then the laundry is dropped by the washing and cleaning. This cleaning method is called washing. At this time, the inner groove 3 has the most appropriate rotation speed. When the inner tank 3 is rotated at a rotation speed higher than the optimum speed, the laundry is attached to the inner surface of the inner tank 3. In this state, since the washing is not performed, the washing performance of the washing machine is lowered. The conventional washing machine rotates the inner tub 3 at the most appropriate rotational speed in order to maintain the washing performance of the washing. Therefore, the circulation amount of the washing liquid in the circulation path 5 is not sufficiently ensured. Therefore, the washing of the outer tank 2 and the washing liquid of the circulation path 5 are delayed, and the detection accuracy of the turbidity sensor 6 is lowered. SUMMARY OF THE INVENTION The present invention provides a washing machine which does not deteriorate the washing performance and maintains the detection accuracy of the degree of staining of the washing liquid. The washing machine of the present invention comprises: a frame; an outer groove supported by the inside of the frame; an inner groove for accommodating the laundry and being rotatably provided inside the outer groove; and a stirring portion for stirring the washing. In addition, the washing machine of the present invention comprises: a circulation path for sucking the washing liquid accumulated in the outer tank and returning to the inside of the outer tank; a circulation pump disposed on the way of the circulation path to circulate the washing liquid; and controlling the stirring portion and the circulation pump Operational control unit. Further, the washing machine of the present invention includes a washing liquid state detecting unit that detects the state of the washing liquid on the way of the circulation path. According to this configuration, the circulation amount of the washing liquid flowing through the washing liquid state detecting portion can be ensured regardless of the operation of the stirring portion. Therefore, the cleaning performance is not lowered, and the detection accuracy of the degree of contamination of the washing liquid is maintained. 4 201109493 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a washing machine in accordance with an embodiment 1 of the present invention. Fig. 2 is a cross-sectional view showing the discharge port of the washing machine of the same embodiment. Fig. 3 is a cross-sectional view showing another discharge port of the washing machine of the same embodiment. Fig. 4 is a cross-sectional view showing another washing machine of the same embodiment. Fig. 5 is a cross-sectional view showing a washing liquid state detecting portion of the washing machine of the same embodiment. Fig. 6 is a cross-sectional view showing another operation of the discharge port of the washing machine of the same embodiment. Figure 7 is a cross-sectional view showing another washing machine of the same embodiment. Figure 8 is a cross-sectional view showing another washing machine of the same embodiment. Figure 9 is a cross-sectional view showing another washing machine of the same embodiment. Figure 10 is a cross-sectional view of a conventional washing machine. [Embodiment 3] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 1 is a cross-sectional view showing a washing machine according to a first embodiment of the present invention. The inside of the upper edge portion 21 is provided with an outer groove 24 supported by a spring 22 of the support portion, an attenuation portion 23, and the like. An inner groove 25 is provided in the inner portion of the outer groove 24 so as to be rotatable. The rear surface of the outer tub 24 (on the right side in Fig. 1) is provided with a drive motor 26 for rotating the inner tub 25. This washing machine is a so-called drum type washing machine in which the rotation axis of the inner tub 25 is horizontal or forward (on the left side in Fig. 1) inclined higher than the horizontal height. The door body 27 provided in the casing 21 opens and closes the front opening 24a of the outer groove 24. The frame body 21 and the door body 27 borrow water

S 5 201109493 The sealing washer 28 is sealed, and a plurality of protrusions 29 are provided on the inner surface of the cylindrical portion of the inner groove 25. When the inner groove 25 is rotated at a low speed, the projection 29 lifts the laundry upward. The upper portion of the casing 21 is provided with a water supply valve 30 having a water supply port 30a for connection to a water supply pipe (not shown), and a lotion input portion 31 for allowing a user to pre-charge the lotion. Further, a water supply path 32 for connecting the water supply valve 3 and the lotion input portion 31, and the lotion input portion 31 and the outer tub 24 is provided. In addition, the other end of the class, ', and water pipes are connected to the water pipe. The water intake port 33 is provided at the lowermost portion of the outer tank 24, and the water intake port 33 is connected to the drain path 36 via the drain damper 34 and the drain valve 35. The washing liquid is discharged to the outside of the washing machine by the draining pipe 36. The circulation path 37 of the corpse = branch of the water intake port 33 and the drain valve 35 is provided. By means of the circulation path 37, the two liquids taken in by the water intake port 33 are returned to the outer tank 24. The discharge port which is the outlet of the circulation path 37 is placed in the outer tank 24, and the discharge port 38 sprays the washing liquid into the inside of the inner tank 25. Further, the path from the water intake port 33 to the discharge port 38 is referred to as a circulation path 37. The circulation path 37 is provided with a circulation pump 39 for circulating the washing liquid in the circulation path 37, and is provided with a washing liquid state detecting portion 40 for detecting the state of the washing liquid. Further, although the circulation path 37 is described as being branched between the water intake port 33 and the drain valve 35, it may be configured to communicate with a water intake port (not shown) provided separately from the water intake port 33 of the drain path 36. Fig. 2 is a cross-sectional view showing the discharge port 38 of the circulation path 37 of the washing machine of the present embodiment. The discharge port 38 is provided between the outer groove 24 and the inner groove, and the washing liquid is sprayed into the inner groove 25 through the gap between the outer groove 24 and the inner groove 25. The spray condition of the washing liquid is shown in Fig. 2B. Further, as shown in Fig. 3, the spout 201109493 outlet 38 may be provided with the discharge port 38 in the exposed portion of the outer groove 24, and the inward groove 25

Inside.卩 Jet construction. The spray condition of the washing liquid at this time is shown in the outer view of C 0 L 11 in Fig. 3, as shown in Fig. 4, and the discharge port 38 may be provided between the outer tank 24 and the inner tank 25. The inside of the inner tank 25 is sprayed, and the washing liquid is sprayed to the configuration between the outer tank 24 and the inner tank 25. Fig. 5 is a cross-sectional view of the washing liquid state detecting unit 40. The washing liquid state detecting unit 40 is composed of a photo sensor 41 that detects the turbidity of the washing liquid, and an electrode sensor 42 that detects the conductivity of the washing liquid. The photo sensor 41 is composed of a light-emitting element 43 and a light-receiving element 44, and the light-emitting element 43 is, for example, an LED, and the light-receiving element 44 is, for example, a photo-crystal. The light-emitting element 43 and the light-receiving element 44 are opposed to each other at a substantially horizontal position via a circulation path 37, and the electrode sensor 42 is constituted by a pair of electrodes 45a and 45b on one side of the side wall of the circulation path 37. The control unit 46 performs operation control of the drive motor 26' water supply valve 30, the drain valve 35, the circulation pump 39, and the like. Further, the control unit 46 reads the output of the washing liquid state detecting unit 40, performs calculation, and the like. Thereby, the detection of the filth of the washing liquid is performed. Next, the operation of the washing machine of the present embodiment will be described. The user opens the door body 27' to put the laundry such as clothes into the inner tub 25, and closes the door body 27. Start the washing machine by pressing the start button. At the start of the operation, the control unit 46 drives the drive motor 26, and estimates the amount of the clothes by the load of the drive motor 26. The control unit 46 displays the amount of the required lotion on the display unit (not shown) in accordance with the estimated amount of the clothes, and the user takes out the lotion input unit 31, and inputs the lotion according to the displayed washing amount, and the lotion input unit 31 is introduced. Press back to the original position. The control unit 46 opens the water supply valve 30 after a predetermined time elapses. Borrow open

7 S 201109493 The water supply valve 30 is supplied with water supplied from a water pipe (not shown) to the outer tank 24 through the water supply path 32. Since the water at this time passes through the lotion input unit 31 into which the lotion has been supplied, it is supplied to the outer tank 24 as a washing liquid containing the lotion. The control unit 46 drives the drive motor 26 at substantially the same time as the start of the water supply, whereby the inner tub 25 rotates. When the washing liquid (water) reaches the predetermined amount of water, the water supply valve 30 is closed. On the other hand, the rotation of the inner groove 25 continues. Since the inner surface of the inner groove 25 is provided with three dog-shaped bodies 29', if the inner groove 25 is rotated, the clothes are lifted. Then, above the inner tank 25, the laundry is away from the inner surface of the inner tank 25 and falls. Use shai to wash and wash the washings. The washing speed has an appropriate rotation speed, which is higher or lower than the rotation speed, and the washing performance is lowered. The control unit 46 opens the drain valve % after washing the clothes for a predetermined time. Then, the control unit, the washing water is drained from the water-repellent path 36 to the outside of the washing machine 46 to rotate the inner tank 25 at a high speed, so that the washing liquid remaining in the washings is stopped to stop _25 'opening the water supply tank 30, the water supply to the water The water level is rotated by the inner tank 25 to perform a rinsing step. The two-step water step and the rinsing step are repeated, and finally the _ water step ends a series of steps in a state in which the washing has been dehydrated. / Next, the operation of the washing liquid state detecting unit 40 will be described. The photo sensor (4) measures the turbidity of the washing liquid as a circulation path ^, and the portion sandwiched by the light-emitting element 43 and the light-receiving error 44 is made of a light-transmitting tree. Therefore, the light 'from the light-emitting element 43 is received by the light-receiving element 44 through the first of the circulating roads 37. The light receiving element 44 outputs a signal corresponding to the light received by the light. The control unit 46 of the microcomputer or the like takes in the signal and converts it into a voltage. The light passing through the washing liquid is attenuated by the degree of contamination of the washing liquid. For example, when the amount of light received by the light-receiving unit 201109493 44 is small, the degree of contamination of the washing liquid is large. That is, the washing liquid is dirty. Conversely, when the amount of light received by the light receiving element 44 is large, the degree of contamination of the washing liquid is small. Thus, the degree of contamination of the washing liquid can be quantitatively detected by the amount of light received by the light receiving element 44. Since the dirt contained in the washing liquid is dissolved in the washing liquid, the washing liquid becomes dirty, and therefore, when the degree of contamination of the washing liquid is large, it is estimated that the amount of the dirt adhering to the washing material is large. On the other hand, the electrode sensor 42 measures the conductivity of the washing liquid. For example, the impedance of the washing liquid between the electrode 4 5 a and the electrode 4 5 b and the capacitance of the control circuit (not shown) constitute an RC oscillating circuit, and the impedance change of the washing liquid is made into a frequency fluoring output, and then the frequency is The change is converted into a voltage value for measurement of conductivity. When the electrolyte component contained in the sweat or the like is dissolved in the washing, it is contained in the stain of sweat or the like of the washing material, and the electrical conductivity of the washing liquid is the same. That is, by quantitatively detecting the conductivity of the washing liquid, the amount of dirt adhering to the sweat of the washing material or the like can be estimated. Thus, by the light sensor 41 and the electrode sensor, the stain and the degree of the washing of the clothes and the like are estimated. Specifically, for example, the temporal change of each of the rounds of the photosensors and the electrode sensors 42 is detected, and the β calculation of the difference in a certain period or the like is performed, thereby estimating the degree of contamination. Alternatively, the degree of contamination is estimated by combining the output results of both the photo sensor 41 and the electrode sensor 42. The operation control such as the cleaning step and the rinsing step is performed in accordance with the /7 noise of the push. That is, when the dirt of the washing material is small, the time of the washing step is shortened. Alternatively, the amount of water in the washing step and the rinsing step is reduced. Therefore, water saving, power saving, and running time can be shortened. The degree of thirst in the washing liquid also follows the lotion contained in the washing liquid 9

S 201109493 Change. Further, the conductivity of the washing liquid may increase with the composition of the washing agent contained in the washing liquid. Therefore, after the water supply or the like, the type and amount of the lotion can be distinguished based on the time point detected by the washing liquid state detecting unit 40. In this way, the washing liquid state detecting unit 40 can detect not only the degree of contamination of the washing liquid but also the state of the washing liquid such as the type and amount of the washing agent, depending on the degree of contamination of the washing liquid, the electrical conductivity, and the like. In order to improve the correlation between the detection result of the washing liquid state detecting unit 40 and the amount of dirt adhering to the clothing, it is necessary to determine the absolute value of the detected value, the rate of change of the detected value, and the like, and the method of determining the calculation. In the present embodiment, since the washing liquid state detecting unit 40 is provided inside the circulation path 37, it is possible to prevent the dirt from adhering to the structure of the photo sensor 41, the electrode sensor 42, or the like, or is not easily agitated by the washing liquid. The structure of the influence. Therefore, since the determination calculation is helpful in improving the detection accuracy, the determination calculation is not limited. For example, the degree of contamination of the washing liquid can be judged as the degree of contamination of the washing liquid. At this time, the operating time and the amount of water in the washing step and the washing step of the washing machine are controlled depending on the degree of contamination of the washing liquid. Further, although the photo sensor 41 and the electrode sensor 42 are used as the washing liquid state detecting unit 40, any one of them can detect the degree of contamination of the washing liquid. Further, although the case where the photosensor 41 and the electrode sensor 42 are used for measuring the turbidity, the conductivity, and the like of the washing liquid is described, other sensors may be used. The light receiving element 44 of the photo sensor 41 is preferably shielded from light from the outside. However, when infrared rays are used as the photo sensor 41, shading is not required, and the structure is simplified. 10 201109493 The washing liquid passing through the circulation path 37 contains particles such as bubbles and sand. Since the bubble is lighter than water, it concentrates on the inside of the circulation path 37. Since the particles are heavy, they are concentrated in the circulation path 37. Below the inside. Therefore, when the light-emitting element 43 and the light-receiving element 44 are disposed in the substantially horizontal direction in the vicinity of the center of the circulation path 37, the detection accuracy is improved. However, the degree of contamination of the washing liquid can be detected when the light-emitting element 43 and the light-receiving element 44 are disposed on the upper side, the oblique direction, or the one side of the circulation path 37, without particular limitation. Similarly, the electrode sensor 42 is provided with the electrode 45a and the electrode 45b in the vicinity of the center in the vertical direction of the circulation path 37, thereby reducing the influence of the bubble and detecting the conductivity with higher precision. Further, it is not particularly limited to this configuration, and when the electrode 45a and the electrode 45b are opposed to each other in the vertical direction and the oblique direction via the circulation path 37, the conductivity of the washing liquid can be detected. By the drive circulation pump 39, the washing liquid accumulated in the outer tub 24 is sucked by the water intake port 33, and is ejected into the inner tank 25 by the discharge port 38 through the washing liquid state detecting unit 4 and the drain filter 34. The washing liquid removes the dirt of the washing liquid and is sucked by the water intake port 33. Thus, the fouling concentration of the washing liquid is more uniform by circulating the washing liquid accumulated in the outer tank 24. In other words, the degree of contamination of the washing liquid detected by the washing liquid state detecting unit 4 is substantially the same as the degree of staining of the washing liquid in the outer tank 24. Therefore, by providing the washing liquid state detecting portion 4 by the circulation path 37, the degree of contamination of the washing liquid can be detected more accurately and fall down. That is, the contamination can be determined early. Further, by spraying the circulated washing liquid into the clothes, the wet clothes can be poured down after the start of the washing step. In addition, the mechanical force exerted by the washing liquid spray acts to improve the washing power. 11 201109493 By the above-described configuration, the circulation of the washing liquid is forcibly performed by the circulation pump 39. Therefore, the circulation of the washing liquid is performed irrespective of the rotation of the inner tank 25 for stirring the clothes. That is, when the rotation speed of the inner tank 25 is low, the circulation of the washing liquid can be sufficiently performed. Further, the amount of circulation of the washing liquid and the time point of circulation, which are not affected by the operation of the stirring portion, can be arbitrarily set. Therefore, it is possible to control the detection accuracy of the degree of contamination of the washing liquid without impairing the cleaning power. Further, if the circulation amount of the washing liquid is large, it is possible to prevent the dirt from adhering to the washing liquid state detecting portion 40. Further, in the rinsing step, the circulation pump 39 is driven, and the rinsing liquid having a small amount of dirt is circulated through the rinsing liquid state detecting portion 40. Thereby, the washing liquid state detecting unit 40 is washed by the washing liquid having a small amount of dirt. In other words, the lotion component and the dirt adhering to the washing step are removed, and the deterioration of the detection performance of the washing liquid state detecting unit 40 is suppressed. In addition, although the discharge port 38 of the circulation path 37 is provided in one place below the outer tank 24, the circulation path 37 may be branched, and the discharge port 38 may be provided at a plurality of places, and the washing may be simultaneously sprayed into the inner tank 25. The structure of the liquid. Further, it is also possible to constitute a discharge port 38 which is branched between the inner groove 25 and the outer groove 24 by branching the circulation path 37 into a majority. Further, the circulation pump 39 repeatedly drives and stops during the washing step and the rinsing step, and intermittently operates. When the circulation pump 39 is driven, since the particles of the bubbles and the dirt are mixed into the washing liquid circulation, it is detected that the degree of contamination is large and the deviation of the detected values is large. Therefore, the washing liquid state detecting unit 40 detects the state of the washing liquid in a state where the circulation pump 39 is stopped, and performs stable and highly accurate detection. Therefore, the accuracy of the estimation of the stain is improved. In addition, after the circulation pump 39 is stopped, the detected value is unstable for a while due to the influence of the 12 201109493 bubble. Therefore, the detection is performed after the circulation pump 39 is made aware of the pre-twist time. Further, when the detected turbidity change width is equal to or less than a predetermined value, it is used as a detection value, thereby improving the accuracy of detection. Further, by performing calculations such as averaging the majority of the detected values, the errors are eliminated, and the detection accuracy is improved. Further, the washing liquid state detecting unit 4 can perform measurement frequently at a leap interval or the like, and only use necessary information. Further, similarly to the photo sensor 41, the electrode sensor 42 is also measured when the circulation pump 39 is stopped, thereby improving the accuracy of detection. Further, the turbidity detection of the photo sensor 41 and the turbidity detection of the electrode sensor 42 are not necessarily performed at the same time point, and may be performed at time points corresponding to the respective features. Further, if there is no problem in accuracy, the degree of contamination of the washing liquid can be detected in the cycle_drive, and the degree of contamination of the washing material can be estimated. In addition, the circulation of the washing liquid to the circulation ribs is carried out by the rotation of the _25 as the mixing part, and the riding position of the 岐25 is carried out, so the washing section can be stopped without stopping the washing. stop. Therefore, the detergency can be ensured and can be high _ precision. Further, if the rotation speed of the circulation fruit 39 is changed in accordance with the progress of the washing step, the rinsing step, etc., it is possible to obtain a more accurate detection accuracy of the washed material and the degree of tampering. The door and the washing liquid of the outer tub 24 are stirred by the rotation of the inner tub 25 as a stirring portion. Therefore, the rotation of _25 has an influence on the (four) liquid state material production, and a detection error is generated. The (four) error is reduced by synchronizing the operation of 彳(4) 幻9 and driving the operation of motor 26 (rotation of (4) slot 25). That is, the control unit 46 turns the axis of the circulation pump 39 to the square of the crane horse track.

S 13 201109493 (hereinafter referred to as inversion) synchronization, the detection by the state detecting unit 40 is driven for 1 minute, and then the drive is stopped (hereinafter referred to as forward rotation), stopped, and driven in the opposite direction to the positive direction. Under certain conditions, the rinsing liquid is carried out 'specifically', for example, the circulation pump 39' is repeatedly repeated for one cycle of the two minutes. Then, the operation is stopped for one minute. At this time, the control unit 46 repeats the drive motor 26 for 30 seconds in a single cycle in one cycle, and then (four) 30 operates. In this way, the cycle (4) is synchronized with the operation of the drive motor. Further, the method of obtaining the above synchronization is an example in which the driving time and the stop time are the same, or the forward rotation time and the reverse rotation time are not the same, and the rotation speed of the cycle fruit 39 can be changed on the way. In addition, the method of synchronizing can be changed during the cleaning step. When the circulation pump 39 is stopped for a predetermined period of time, the control unit 46 stops the drive motor 26 and stops the rotation of the inner tub 25, and both the circulation pump 39 and the drive motor 26 are in a stopped state. By the detection of the sputum sputum state detecting unit 40 at this time or before and after the time point, the error is reduced. Further, at this time, even if the stop of the drive motor 26 is provided only between the forward rotation and the reverse rotation, there is an effect. Here, as shown in Fig. 2, the discharge port 38 of the circulation path 37 is provided such that the gap between the outer groove 24 and the inner groove 25 is directed into the inner groove 25 to eject the washing liquid. With this configuration, the circulating washing liquid contacts the washings such as clothes, promotes the wetting of the washings, and the like, and the washing power of the washing machine is improved. Further, when the rotational speed of the circulation pump 39 is equal to or higher than the predetermined rotational speed, as shown in Fig. 2B, the washing liquid is sprayed toward the inside of the inner tub 25, and circulates between the outer tub 24 and the inner tub 25. On the other hand, if the rotational speed of the circulation pump 39 is equal to or lower than the predetermined rotational speed, the washing liquid circulates through the inside of the outer tub 24 as shown in Fig. 6 (1). That is, by controlling the rotational speed of the circulation pump 39, it is possible to switch the state in which the washing liquid does not directly enter the inner tank 25 < internal state and the inside and outside of the inner tank 25 as needed. Accordingly, the detection accuracy of the washing liquid state detecting unit 40 will be described below. After the start of the operation of the washing machine, the water supply is turned on, and the detergent supplied to the lotion input unit 31 flows into the outer tank 24. At the stage of the water supply, the predetermined rotational speed of Z is tempered by the county 39, and the washing agent concentration is high. The material is spouted: 38 to the inner tank 25. At this time, when the lotion concentration is high and the absorption is absorbed to clothing, etc., the (4) 24 finds (four) (4) decline. The washing liquid after the start is in a state in which only the lotion is substantially dissolved, and the detecting unit 40 detects the state of washing, and the material of the separating agent is: a lotion or a liquid lotion. X, the test result can be used as the initial value of the washing liquid before the washing step (4). However, when the state is washed and the inside of the inner tank 25 is sprayed, the above-described washing and washing and the initial value of the washing are not possible. Here, in the washing water supply water, the rotation speed of the circulation pump 39 is set to a predetermined rotation speed, and the washing liquid is sprayed from the discharge port 38 toward the inside of the inner tank 25, and is not lowered below the outer tank 24. Thereby, the detection accuracy of the initial state of the cleaning step is improved. X, in order to stop the circulation of the washing liquid by the circulation pump 39 for 2 nights, the enthalpy is accumulated; the wide arm is emitted, and the state detecting unit 4 is used. The washing liquid and the accumulated in the outer tank are in a heart-shaped shape, so the U precision is deteriorated. That is, as described above, the borrowing surface is dropped to the lower side of the outer tub 24, and circulates inside the outer tub 24 to promote the solution of the port 38 and the washing liquid to be uniformized. Then, during the cleaning step, the cleaning effect of the solvent spray washing solution is improved, and the dirt is washed and washed by the washing material.

S 15 201109493 Fast can estimate the amount of dirt at an early stage. Thus, by controlling the rotational speed of the circulation spring 39, it is possible to perform high-precision fouling determination using one circulation pump 39 and the circulation path 37. Further, when the washing liquid is circulated only in the outer tank 24, it is preferable that not all of the washing liquid is sprayed into the inner tank 25. However, there is no problem in the degree of splashing of the washing liquid and the washing liquid which flows through the outer wall surface of the inner tank 25 into the inner tank 25 by the holes and the gaps of the inner tank 25. Further, the detection accuracy is improved by reducing the amount of the washing liquid which is sprayed at least to the inside of the inner tank 25. That is, at least the washing liquid does not enter the inside of the inner tank 25, and the detection accuracy is improved when the inside of the outer tank 24 is circulated. That is, it is not only effective when the washing liquid is not completely sprayed into the inside of the inner tank 25, and if a part of the washing liquid is sprayed into the inside of the inner tank 25, a part of the washing liquid is also sprayed to the outer tank 24 and The inner grooves 25 circulate inside the outer grooves 24, and the detection accuracy is improved. Further, the state in which the washing liquid is not ejected toward the inner tub 25 or the state in which the washing liquid is ejected into the inner and outer portions of the inner tub 25 does not have an effect only at the initial stage of the water supply. For example, when the washing starts, the lotion is foamed, and when the washing is sprayed toward the inside of the inner tank 25, foaming is further increased. X ’ stops the rinsing liquid inside the inner tank 25, thereby suppressing foaming and suppressing a decrease in detection accuracy due to bubble generation. As described above, by controlling the rotation speed of the circulation pump 39, the injection of the washing liquid can be switched without adding a structure. The water supply water supplied from the water supply path 32 is between the outer tank 24 and the inner tank 25, and the washing liquid state detecting unit 4 is disposed below the lowest point inside the inner tank 25, as supplied in the first drawing A. The water reaches the washing liquid state detecting unit 40 before entering the person (four) 25. 16 201109493 In the rinsing step, the water supplied from the water supply path 32 does not pass through the laundry containing clothes such as dirt and lotion, and reaches the washing liquid state detecting unit 40. The washing liquid state detecting unit 40 detects water that does not contain dirt, lotion, or the like, and detects that the dirt adheres to the washing liquid state detecting unit 40 or the like for a long period of time. According to the detection result, the correction of the measurement can be performed for a long time change, and the detection accuracy can be maintained. On the other hand, in the case of the water supply in the cleaning step, the water supplied from the water supply path 32 becomes the washing liquid containing the lotion which is supplied to the lotion input unit 31, and does not enter the inside of the inner tank 25, and reaches the washing liquid state detecting unit 40. Therefore, the washing liquid in a state in which the lotion is not adhered or absorbed in the clothes and the like, and the lotion is dissolved in the clothes before the clothes are dissolved, reaches the washing liquid state detecting unit 40. By detecting this state, the accuracy of distinguishing the lotion as a powder lotion or a liquid lotion is improved. Thereby, the accuracy of the initial value of the washing liquid in the washing step is improved, and the detection accuracy of the degree of staining of the washing liquid is improved. According to this result, when the amount of dirt is small, the washing time is shortened, or the amount of water used is reduced, and an efficient washing can be performed. Further, when water is supplied, the amount of water supplied is increased, and the washing liquid containing the lotion enters the inside of the inner tank 25. Since the water supply path 32 supplies the washing liquid to the outer tank 24 and the inner tank 25, the amount of the lotion adhered or adsorbed to the clothes is smaller than when the water is directly supplied to the inside of the inner tank 25. Further, even after the amount of water supplied is increased and the water is supplied to the inside of the inner tank 25, the detection accuracy of the initial value of the washing liquid in the washing step is also improved. Further, by driving the circulation pump 39, the lotion is quickly dissolved, and the washing liquid can be poured into the clothes. In addition, by driving the circulation pump 39, including washing

The washing liquid of the S 17 201109493 agent reaches the washing liquid state detecting unit 40, and the initial state of the washing liquid is accurately detected before the washing liquid is foamed. Further, in order to improve the washing performance of the washing machine, it is preferable to rotate the inner groove 25 as the stirring portion from the early stage. However, when the inner tank 25 is rotated from the early stage, the washing liquid is foamed. This bubble has a tendency to lower the detection accuracy of the washing liquid state detecting unit 40. Therefore, the washing liquid containing the lotion before the rotation of the inner tub 25 reaches the washing liquid state detecting unit 40. Therefore, the initial state of the washing liquid before the foaming of the washing liquid is accurately detected. On the other hand, the washing liquid accumulated in the outer tub 24 is disturbed by the rotation of the inner tub 25 as the stirring portion, and the washing liquid is foamed. The washing liquid state detecting unit 4 is disposed at a position 'which is away from the water intake port 33 in the middle of the circulation path 37, and is provided at a position that is not directly opposed to the inner groove 25. Thereby, the influence of the rotation of the inner tub 25 on the detection of the washing liquid state detecting unit 40 can be suppressed to be small. In addition, as shown in the first drawing, the washing liquid state detecting unit 40 is provided at a position where the inner groove 25 is bent, and the partition wall is provided between the inner groove 25 and the washing liquid state detecting unit 40. 25 direct opposite construction. Further, although the drum type washing machine in which the rotation axis of the inner tub 25 is substantially horizontal is described, another washing machine (pulsating type washing machine) as shown in the sectional view of Fig. 7 has the same effect. In Figure 7, for the first! Figure ~ ^ Figure of the same structure is the same symbol description. The washing shown in the paste = machine, the rotation of the inner rib _ is straight. Further, although (4) in the inner tank condition, the stirring body 47_ turns to be the action of the lion, but is not limited thereto. , the tree (four) material is supplied to the (four) 2s trough between the village and the water for the heart-cutting ribs is directly fed into the inner tank 25 of the 18 201109493 4, by circulating the pump 39, the washing liquid is circulated to the circulation path 37, using the washing The liquid state detects and detects the state of the washing liquid. Further, the washing machine can also be a washing and drying machine having a drying function, which has the same effect in washing. Figure 8 is a cross-sectional view showing another washing machine of the present invention. The difference from the above-described washing machine is that the switching valve 48 is provided in the circulation path p, and the circulation path bolt 37 is branched so that the inner groove circulation path is still different from the outer groove circulation path. In Fig. 8, the washing machine uses the switching valve 48 to switch the circulation path η to the inner tank circulation path 49 or the external position %. After the borrowing water starts, change the road (4) to the outer tank and follow the % road." H night does not directly enter the inside of the inner tank 25. At this time, it is possible to accurately detect the washing agent (4) read state, that is, the initial state, and at this time, it is not necessary to reduce the rotation speed of the circulation pump 39 so that the circulation amount of the washing liquid is small, and the circulation of the washing liquid can be maintained. the amount. That is, the degree of release of the lotion to the washing liquid is improved, and the washing performance is improved. Thereby, the detection accuracy of the washing liquid core detecting unit 4〇 and the washing performance of the washing machine can be achieved. Further, 'in FIG. 8', although S is provided with the configuration of the switching valve 48, but as shown in the cross-sectional view of another washing machine in Fig. 9, by using the forward rotation and the reverse rotation, the discharge path can be switched to the county 139. The washing can be switched to the inner tank circulation path 49 and the outer tank circulation path 50, respectively, with the same effect. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a washing machine of a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing the discharge port of the washing machine of the same embodiment. Figure 3 is a cross section of another discharge port of the same embodiment of the washing machine

19 S 201109493 Figure. Fig. 4 is a cross-sectional view showing another washing machine of the same embodiment. Fig. 5 is a cross-sectional view showing a washing liquid state detecting portion of the washing machine of the same embodiment. Fig. 6 is a cross-sectional view showing another operation of the discharge port of the washing machine of the same embodiment. Figure 7 is a cross-sectional view showing another washing machine of the same embodiment. Figure 8 is a cross-sectional view showing another washing machine of the same embodiment. Figure 9 is a cross-sectional view showing another washing machine of the same embodiment. Figure 10 is a cross-sectional view of a conventional washing machine. [Main component symbol description] 1...frame 26...drive motor 2...outer groove 27...door 3...inner groove 28...water seal washer 4...drive motor 29 ...protrusion 5...circulation path 30...water supply valve 6...turbidity sensor 30a...water supply port 7...control unit 31...lotion input unit 21...frame 32...feed water path 22...spring 33...water intake port 23...attenuation portion 34...drain transition unit 24...outer tank 35...drain valve 24a...front opening 36... Drainage path 25...Inner groove 37...Circulation path 20 201109493 38...Discharge port 46...Control unit 39...Circulation pump 47...Agitating body 40...Washing state detecting unit 48 ...switching valve 41...light sensor 49...inner groove circulation path 42...electrode sensor 50...outer groove circulation path 43...light emitting element 139...circulation pump 44 ...light-receiving element A... lowest point 45a inside the inner groove 45b, 45b. · electrode B, C... injection of the washing liquid s 21

Claims (1)

201109493 VII. Patent application scope: 1. A washing machine comprising: a frame; an outer groove supported by the inside of the frame; an inner groove for accommodating the washing and being rotatably disposed inside the outer groove; stirring the washing a stirring portion; a circulation path for taking in the washing liquid accumulated in the outer tank and returning to the inside of the outer tank; a circulation pump for circulating the washing liquid on the way of the circulation path; and controlling the stirring portion and the circulation In the control unit for operating the pump, a washing liquid state detecting unit that detects the state of the washing liquid is provided in the middle of the circulation path. 2. The washing machine according to claim 1, wherein the control unit intermittently operates the circulation pump in a cleaning step, and the washing liquid state detecting unit detects a state of the washing liquid when the circulation pump is stopped. 3. The washing machine of claim 1, wherein the aforementioned circulation path sprays the aforementioned washing liquid toward the inside of the inner tank. 4. The washing machine of claim 1, wherein the control unit synchronizes driving of the agitating unit with driving of the circulation pump. 5. The washing machine of claim 1, wherein the control unit stops driving of the agitating unit after stopping the circulation pump for a predetermined period of time. 6. The washing machine of claim 1, wherein the aforementioned control unit drives the circulation pump in a washing step of 2011-09-23. 7. The washing machine according to claim 1, wherein the agitating portion is an inner groove as described above, and the washing material is mixed by the rotation of the inner groove. 8. The washing machine according to claim 1, wherein the mixing body is rotatably provided at a bottom of the inner tank, and the feeding portion is the mixing body, and the washing material is stirred by the rotation of the stirring body. . twenty three