JP5263083B2 - dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect the amount of objects to be washed when the detected temperature of temperature detecting means is lower than a reference temperature TO afterwards, even if the detected temperature is higher than the standard temperature TO at the start of a heating-rinsing process. <P>SOLUTION: The dishwasher can detect the amount of objects to be washed without limiting detectable water temperature conditions of the heating-rinsing process even if the rinsing frequency by turbidity detecting means is changed to less frequency by resuming measurement of a temperature rise required time when the detected temperature of washing tub internal temperature detecting means is not reduced, when the detected temperature of wash water at the start of the heating-rinsing process is higher than the reference temperature TO of wash water and when the temperature is raised after the detected temperature after the lapse of a predetermined time from the start of the heating-rinsing process once is reduced relative to the reference temperature TO, when reducing the frequency of the rinsing process by turbidity detection or the like. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a dishwasher provided with capacity detection means for detecting the amount of an object to be cleaned.

  In the conventional dishwasher, the turbidity detection means alone (for example, refer to Patent Document 1) or the volume detection means alone detects the amount of the object to be cleaned. FIG. 10 shows a conventional dishwasher equipped with a means for detecting turbidity alone described in Patent Document 1.

As shown in FIG. 10, the dishwasher main body 101 includes a washing tank 102 that accommodates an object to be washed, a water supply means 103 that supplies water to the washing tank 102 , and a drain that drains the washing water in the washing tank 102 . A means 104, a cleaning means 106 for spraying the cleaning water pumped by the cleaning pump 105 onto the object 107 , a heating means 113 for heating the cleaning water, and a temperature detection means 112 for detecting the temperature of the cleaning water, a washing step of washing the object to be cleaned 107, the stroke rinsed performing rinsing of the cleaning object 107, after the rinsing process terminates, drained, subjected to water after, while heating the washing water after the water supply to a predetermined temperature has a heated rinsing operation for injecting wash water to the object to be cleaned 107, the control unit 118 for controlling the control means 118, the relationship of the wash water temperature in the heating rinsing operation Measuring the Atsushi Nobori time required from the detection reference temperature T0 of the temperature detecting means 112 because was to reach a target temperature T1, it has detected the amount of the cleaning object 107 by the length of the heating time required.

JP 2005-052216 A

However, in such a conventional configuration, when the temperature detected by the temperature detecting means at the time of heating rinsing cycle starts is higher than the reference temperature T0, it is possible to measure the Atsushi Nobori time required for the attainment target temperature T1 from the reference temperature T0 For this reason, there is a problem that the amount of the object to be cleaned cannot be detected.

On the other hand, as a result of intensive studies by the present inventors, even when the detected temperature of the temperature detecting means at the start of the heating rinsing process is higher than T0, the detected temperature may fall below the reference temperature T0 due to stirring of washing water or the like. I understood.

Therefore, the present invention solves the conventional problem, and even when the temperature detected by the temperature detecting means is higher than the reference temperature T0 at the start of the heating rinsing process, the detected temperature becomes lower than the reference temperature T0 after that. A dishwasher capable of detecting the amount of the object to be cleaned by starting the measurement of the required temperature increase after the temperature becomes lower than the reference temperature T0 and measuring the time required for the temperature increase until the target temperature T1 is reached. The purpose is to provide.

In the dishwasher according to the present invention, the control means measures the time required for the temperature rise from the reference temperature T0 to the target temperature T1 when the detected temperature of the temperature detecting means at the start of the heating rinsing process is lower than the reference temperature T0. Further, by reducing the number of times of the normal rinsing based on the detection result of the turbidity detecting means, the temperature detected by the temperature detecting means at the start of the heating rinsing process becomes higher than the reference temperature T0, and from the start of the heating rinsing process. When the cleaning water temperature after the lapse of a predetermined time after driving the cleaning pump becomes lower than the reference temperature T0, measurement of the time required for temperature rise is started after the temperature detected by the temperature detecting means becomes lower than the reference temperature T0. By measuring the time required to raise the temperature from the reference temperature T0 to the target temperature T1, and detecting the amount of the object to be cleaned, the temperature detected by the temperature detecting means at the start of the heating rinse process Even if the temperature is higher than the quasi-temperature T0, if the detected temperature subsequently becomes lower than the reference temperature T0, the time required for raising the temperature is started after the detected temperature becomes lower than the reference temperature T0, and the temperature rises until the target temperature T1 is reached. By measuring the temperature required time, the amount of the object to be cleaned can be detected.

According to the dishwasher of the present invention, even if the detected temperature of the temperature detecting means is higher than the reference temperature T0 at the start of the heating rinsing process, if the detected temperature becomes lower than the reference temperature T0 after that, the detected temperature is lower than the reference temperature T0. Then, the measurement of the time required for temperature rise is started, and the time required for temperature rise until reaching the target temperature T1 is measured, whereby the amount of the object to be cleaned can be detected.

Schematic cross-sectional view of the dishwasher according to Embodiment 1 of the present invention when viewed from the front Cross-sectional schematic view of the dishwasher from the side Enlarged perspective view of turbidity detection means of the dishwasher Side cross-sectional view near the turbidity detection means of the dishwasher Enlarged front view near the turbidity detection means of the dishwasher The figure which shows the temperature change of the washing water of each process of the same dishwasher The figure which shows the detection temperature change of the temperature detection means accompanying the water temperature change of each process of the dishwasher The figure which shows the temperature change of washing water when the number of times of rinse changes in the same dishwasher The figure which shows the change of the detection temperature of the temperature detection means when the frequency | count of a rinse changes in the same dishwasher Cross-sectional view of a conventional dishwasher

1st invention is a dishwasher which injects washing water and wash | cleans a to-be-washed object, Comprising: The washing tank which accommodates to-be-washed | cleaned object, and the washing | cleaning which injects the wash water pumped by the washing pump to a to-be-washed object A heating means for heating the cleaning water, a temperature detection means for detecting the temperature of the cleaning water, and a turbidity detection means for detecting the turbidity of the cleaning water. A washing process for washing an object, a normal rinsing process for rinsing the object to be washed after drainage and water supply are performed, and a jet of water to the object to be washed while the washing water is heated by heating means after the drainage and water supply are performed Heating rinsing process to control in order, and the control means to change the number of times of the normal rinsing based on the detection result of the turbidity detection means , the control means of the temperature detection means at the start of the heating rinsing process The detected temperature is lower than the reference temperature T0 If the heating time required from the reference temperature T0 to reach the target temperature T1 measured, also by reducing the number of the normal rinse based on a detection result of the turbidity sensing means, heated rinsing operation starting higher detected temperature of the temperature detecting means is higher than the reference temperature T0, and, if the heating rinsing operation starts by driving the washing pump washing water temperature after the predetermined period of time is lower than the reference temperature T0, the Measurement of the required temperature rise time after the temperature detected by the temperature detection means becomes lower than the reference temperature T0, and the time required for temperature rise from the reference temperature T0 to the target temperature T1 is measured. By detecting the amount of the object, it is possible to detect without limiting the water temperature condition in which the heating rinsing process can be detected.
In addition, since the control means changes the number of times of rinsing based on the detection result of the turbidity detection means, even if the number of times of rinsing is reduced and the temperature of the washing water is difficult to decrease, the temperature detected by the temperature detection means When the temperature becomes lower than the reference temperature T0, the time required for temperature increase is measured again, so that the amount of the object to be cleaned can be reliably detected.

According to a second aspect of the present invention, in the first aspect of the invention, in particular, when the temperature detected by the temperature detecting means at the start of the heating rinsing process is higher than the reference temperature T0, the control means drives the cleaning pump and stirs the cleaning water. By executing the cooling of the cleaning water, the temperature of the cleaning water can be surely made lower than the reference temperature T0.

(Embodiment 1)
Hereinafter, a dishwasher according to an embodiment of the present invention will be described with reference to the drawings. In the following description, a liquid used for cleaning and rinsing an object to be cleaned such as tableware is referred to as cleaning water.

  As shown in FIGS. 1 and 2, a washing tub 2 is provided inside a main body 1 of the dishwasher, and an inner wall of the washing tub 2 is formed of a resin material. Inside the washing tub 2, a table basket 4 in which an object to be cleaned 3 such as tableware is installed is stored so as to be able to be taken in and out in the horizontal direction from the washing tub 2.

A storage portion 5, which is a recess for storing cleaning water, is provided at the bottom of the inner surface of the cleaning tank 2. The lower portion of the main body 1 washing water circulation path 7 communicating is provided with cleaning means 6 and the reservoir 5, the washing water circulation route 7, the cleaning means 6 F order from savings distillation unit 5, the washing water is filtered washed A leftover filter 8 for removing underwater leftovers, a washing pump 9 for pressurizing and feeding the washing water, and a water diversion mechanism 10 for switching the washing water supply path are provided. Here, leftovers refer to foods and solids that have adhered to the object to be cleaned.

  The cleaning means 6 having a plurality of injection ports is provided on the inner wall of the bottom surface of the cleaning tank 2 and is provided on the inner wall of the rear surface of the cleaning tank 2 and the first rotating nozzle 6a and the second rotating nozzle 6b that are rotatably supported. And a third rotary cleaning nozzle 6c extending from the fixed cleaning nozzle 11 is provided at the tip.

  Moreover, the temperature detection of the thermistor etc. which can detect the washing water temperature indirectly through the storage part 5 side wall at the storage part 5 side wall through the storage part 5 side wall, and can detect the gas temperature in the washing tank 2 when there is no washing water. Means 12 are provided. The storage unit 5 has a heating means 13 such as a heater, and the cleaning water is heated by the heating means 13, and the cleaning water temperature is detected by the temperature detection means 12, thereby cleaning at a predetermined cleaning water temperature. it can.

  Further, water is supplied by the water supply means 50 and drained by the cleaning pump (drainage means) 9. That is, in this embodiment, a cleaning and drainage pump is used.

1-4, a turbidity detecting means 16 for detecting the turbidity of the washing water is provided on the outer wall of the upper surface of the washing tank 2 that is partially bulged and has a light emitting part 14 and a light receiving part 15. ing. Turbidity detection unit 16 is provided above the water level in the washing tank 2 position, since no submerged, without being contaminated by such oil accumulated on the surface of the washing water savings engaging portion 5, turbidimetry Contamination of the degree detection means 16 can be suppressed, and the occurrence of turbidity detection errors can be suppressed.

Further, when fixing the light emitting portion 14 and light receiving portion 15 to the cleaning tank 2 upper surface outer wall can be fixed in only one seal member 20 together with the light emitting portion 14 and the light receiving unit 15, cleaning water circulation route 7 As compared with the case where the light emitting unit 14 and the light receiving unit 15 are fixed by the respective sealing members in the middle of the cleaning water, the washing water is more difficult to leak. Further, when fixing the turbidity detecting means 16 and the light emitting unit 14 and the light receiving unit 15 to the outer wall of the upper surface of the cleaning tank 2, the possibility that the cleaning water leaks upward is lower than the possibility that the cleaning water leaks downward. Water leakage damage can be reduced even when there are problems such as poor sealing.

A first water channel 45 extending forward from the fixed cleaning nozzle 11 and a second water channel 46 bent upward from the first water channel 45 are provided. Further, the opening at the upper end of the second water channel 46 is the turbidity detection outlet 17 .

Further, the turbidity detection injection port 17 supplies cleaning water to a turbidity detection water channel 47 in which the light emitting unit 14 and the light receiving unit 15 are arranged on the outer wall. The opening at the lower end of the turbidity detection water channel 47 is provided so as to extend below the upper end of the second water channel 46, that is, below the turbidity detection injection port 17. A part of the upper stage of the water channel 46 is inserted. Therefore, since the washing water for detecting turbidity is supplied from the fixed washing nozzle 11 to the turbidity detecting means 16 without touching the air, the washing water in which mixing of bubbles is suppressed is supplied to the turbidity detecting means 16. Can do. Since the turbidity detection means 16 is provided in the injection direction of the turbidity detection outlet 17, cleaning water is reliably supplied to the turbidity detection means 16. Thus, even if the turbidity detecting means 16 is provided on the outer wall of the cleaning tank 2, the turbidity can be reliably detected with high accuracy.

Further, the turbidity detection means 16 detects the turbidity of the washing water jetted substantially upward from the turbidity detection injection port 17 provided in the fixed washing nozzle 11, thereby the light emitting unit 14, the light receiving unit 15, and the like. Since an air layer is less likely to be generated during this period, the accuracy of turbidity detection can be further improved. That is, when the turbidity detecting means 16 is provided on the outer wall of the cleaning tank 2 and the cleaning water is sprayed horizontally with respect to the turbidity detecting means 16, the light emitting unit 14 and the light receiving unit 15 There is a case where an air layer is formed between the two, and as a result, a problem that an error in turbidity increases occurs. However, the occurrence of the problem can be suppressed by adopting the above configuration.

Turbidity detection part 42 has a side wall of the light-transmitting, optical sensor includes a light emitting portion 14 for emitting light and a light receiving portion 15 for receiving the light, the light emitting unit 14 and the light receiving unit 15, The front cross-sectional views are arranged so as to face each other outside the mutually opposite side wall portions of the concave turbidity detection water channel 47.

In this case, in the turbidity detection means 16 , the light generated from the light emitting unit 14 is received by the light receiving unit 15 through the side wall portions of the concave portion of the turbidity detection water channel 47 facing each other and the cleaning water in the concave portion. . Thereby, the turbidity of washing water is detected. In this way, it is possible to detect the turbidity of the washing water with a simple configuration. Further, the light emitting unit 14 and the light receiving unit 15 are located outside the side wall of the concave portion. This prevents the cleaning water from coming into contact with the light emitting unit 14 and the light receiving unit 15 easily and reliably.

The fixed cleaning nozzle 11 is disposed so as to discharge the cleaning water upward from the discharge port, and the turbidity detection water channel 47 is disposed downward so that the bottom surface faces the discharge port of the fixed cleaning nozzle 11. When cleaning water is supplied to the fixed cleaning nozzle 11, the cleaning water discharged from the turbidity detection injection port 17 collides with the bottom surface of the concave portion and is returned to the periphery of the turbidity detection injection port 17. . On the other hand, when the washing water is supplied to the washing nozzles other than the fixed cleaning nozzle 11, the washing water is not discharged from the turbidity sensing the injection port 17. Therefore, the wash water in the turbidity detection water channel 47 arranged downward is easily and reliably removed. Thereby, it is possible to easily and reliably prevent dirt from adhering to the inner surface of the turbidity detection water channel 47. Accordingly, it is possible to prevent the detection accuracy of the turbidity of the cleaning water by the optical sensor from being lowered.

In FIG. 5, the washing water is discharged upward from the turbidity detection injection port 17, and the positional accuracy is set in the concave portion of the turbidity detection water channel 47 arranged so that the bottom surface faces the turbidity detection injection port 17. In order to supply cleaning water well, a concave insertion portion 40 is formed in the fixed cleaning nozzle 11. The inserted portion 40 has a groove portion into which an insertion rib 41 formed on the rear inner wall of the cleaning tank 2 is inserted, and the insertion rib 41 (position regulating portion) is smoothly inserted into the groove portion on both sides of the groove portion. Therefore, an arc-shaped convex portion is formed. When fixing the cleaning nozzle 11 is fixed from below to the surface the inner wall after the cleaning tank 2 upwards, by inserting the rib 41 is inserted into the receptacle 40, the left-right direction of the fixed cleaning nozzles 11 definitive into the cleaning tank 2 The position of the fixed cleaning nozzle 11 is fixed.

Further, two fixed cleaning nozzle side ribs 43 are formed at the upper end portion of the fixed cleaning nozzle 11, and two cleaning tank side ribs 44 (position restricting portions) that come into contact with the fixed cleaning nozzle side rib 43 are provided in the cleaning tank. 2 is formed on the inner wall of the upper surface in which the upper surface of 2 is partially bulged . Further, the fixed cleaning nozzle 11 is fixed to the rear inner wall of the cleaning tank 2 from below so that the upper end portion of the second water channel 46 is inserted into the turbidity detection water channel 47. When the side rib 43 is brought into contact with the cleaning tank side rib 44 from below, the position of the fixed cleaning nozzle 11 in the vertical direction in the cleaning tank 2 is restricted, and the position of the fixed cleaning nozzle 11 is fixed.

  As described above, the insertion rib 41 is inserted into the inserted portion 40, and the cleaning tank side rib 44 contacts the fixed cleaning nozzle side rib 43, so that the horizontal direction and the vertical direction of the fixed cleaning nozzle 11 in the cleaning tank 2 are changed. It is fixed without shifting. Accordingly, the positions of the first and second water channels 45 and 46 formed in the fixed cleaning nozzle 11 in the cleaning tank 2 are not easily displaced, and the position of the turbidity detecting means 16 provided on the upper surface of the cleaning tank 2 is It becomes difficult to slip.

Thereby, the fall of the precision by the components dispersion | variation and assembly dispersion | variation which arise on manufacture can be suppressed, and turbidity can be detected accurately. Further, the washing water of the fixed washing nozzle 11 arranged to discharge the washing water upward from the turbidity detection injection port 17 is arranged downward so that the bottom surface faces the turbidity detection injection port 17. Although it is supplied to the concave turbidity detection water channel 47, the second water channel 46 and the turbidity detection water channel 47 are arranged so as to overlap in the vertical direction as already described.

In addition, there is no need to consider the gap relationship between the second water channel 46 and the turbidity detection water channel 47 due to variations in parts and assembly caused by manufacturing, and stable turbidity detection is realized including variations due to manufacturing. be able to.

  Further, by providing the water separation mechanism 10, the cleaning water can be ejected in order from the first, second and third rotary cleaning nozzles 6 a, 6 b, 6 c and the fixed cleaning nozzle 11.

The turbidity is determined by the first, second and third rotary cleaning nozzles 6a, 6b, 6c and the fixed cleaning nozzle 1.
According to 1, when the washing object is washed, the dirt that has fallen from the washing object is dissolved or mixed in the washing water, so that it depends on which washing means is dirty during use or turbidity changes. Since it is possible to determine which of the plurality of cleaning nozzles (cleaning means) 6a, 6b, 6c, 11 is dirty, the plurality of cleaning nozzles (cleaning means) 6a, 6b, 6c, 11 can be efficiently used to perform efficient cleaning according to dirt, and effective cleaning can be performed depending on the capacity of an object to be cleaned 3 such as tableware to be set. Here, the turbidity detection means 16 has only one location, and only detects when it passes through this position. However, all the plurality of cleaning nozzles (cleaning means) are controlled from the control state such as the rotation time and the stop time. It is also possible to know the supply state of the washing water to 6a, 6b, 6c and 11.

  FIG. 6 shows a change in water temperature in each stroke, and FIG. 7 shows a change in detected temperature of the temperature detection means in each stroke. As shown in FIGS. 6 and 7, the dishwasher executes a mist process, a washing process, a plurality of rinsing processes, a heating rinsing process, and a drying process in this order. The mist process is a process in which the detergent liquid particles generated by the ultrasonic vibrator are attached to the object to be cleaned 3 in advance to lift the dirt, and the heating means 13 is driven if necessary.

  The washing process is a process in which the washing pump 9 is driven, washing water is sprayed from the washing means 6 onto the article 3 to be washed, and the article 3 is washed with mechanical force. In the washing process, the washing water is heated to a predetermined temperature, for example, 50 to 70 degrees by the heating means 13 in order to wash and remove oil stains and the like of the article 3 to be washed.

  The rinsing process is a process performed after the washing process, and is a process of performing drainage and water supply, and rinsing the article to be cleaned 3 with clean water supplied into the cleaning tank 2, and is performed at least once. In the present embodiment, the heating means 13 is not driven in the rinsing process, but may be heated to a predetermined temperature as long as the amount of an object to be cleaned 3 described later can be detected.

The heating and rinsing process is a process usually performed after the rinsing process is completed, draining water, supplying water again, driving the cleaning pump 9 while heating the cleaning water to a predetermined temperature, and supplying the cleaning water to the object to be cleaned 3. This is the process of jetting. Re-water supply drives the final fairly soon wash pump 9. The amount of the object to be cleaned 3 is detected by measuring the time required for temperature rise from the reference temperature T0 to the target temperature T1 of the temperature of the cleaning water detected by the temperature detection means 12 in the heating rinse process. During this time, the cleaning pump 9 is driven to inject cleaning water from the cleaning means 6 onto the object to be cleaned 3, and the heating means 13 adds the cleaning water, the dishwasher body, and the like to the object to be cleaned 3 while heating the object to be cleaned 3. The cleaning object 3 is cleaned. Therefore, since the amount of heat for warming the object to be cleaned 3 increases as the amount of the object to be cleaned 3 increases, the time for reaching the target temperature T1 becomes longer. At this time, if the reference temperature T0 is higher than the predetermined temperature, the required time to the target target temperature T1 is shortened, so that the difference in the amount of the object to be cleaned 3 is relatively less likely to appear as the time difference. Therefore, in consideration of detection errors and the like, it becomes difficult to detect the difference in the amount of the object 3 to be cleaned. On the other hand, if the reference temperature T0 is a low temperature, the required time to the target target temperature T1 becomes long and it becomes easy to detect the difference in the amount of the object to be cleaned 3, while the detectable water temperature is limited to be low. In other words, the washing water heated in the washing process is replaced by at least one drainage and water supply, and the temperature is lowered in the rinsing process, but the temperature of the washing water is not sufficiently lowered if the amount of drainage and the water supply is small. . In this case, when the reference temperature T0 is set to a low temperature, to not drop until the temperature reference temperature of the washing water T0, it becomes impossible to measure the time from the reference temperature T0 to a final target temperature T1, As a result, the amount of the object to be cleaned 3 cannot be detected. For these reasons, the reference temperature T0 is set to 40 to 50 ° C. and the target temperature T1 is set to 60 ° C. or more depending on the target cleaning performance and accuracy. Generally, the highest washing step before the normal rinsing step is set. The water temperature is higher than the reference temperature T0.

Here, as shown in FIGS. 6 and 7, since the temperature detection means 12 is provided on the outer wall of the cleaning tank 2 and detects the temperature of the cleaning water indirectly via the outer wall of the cleaning tank 2, It takes time until the temperature change is transmitted to the temperature detecting means 12, and the temperature change characteristic is insensitive to the actual washing water temperature. In one normal rinsing process, at the beginning of the normal rinsing process, heat conduction generally occurs due to the stirring of the cleaning water between the lower temperature of the cleaning water and the higher temperature of the cleaning object 3 or the cleaning tank 2. Although the water temperature changes, the heat quantity of the entire system constituting the dishwasher is balanced after a certain period of time, so that the temperature detected by the temperature detecting means 12 is substantially constant. That is, at the start of the normal rinsing process, the temperature detected by the temperature detecting means 12 is close to the temperature of the higher temperature washing tank 2 or the like, so that the detected temperature decreases when a predetermined time elapses in the rinsing process, and the temperature change is detected by temperature detection. When the means exhibits the insensitive temperature change characteristic as described above, it changes more gradually than the actual water temperature change in the cleaning tank 2.

  Since this phenomenon occurs in each normal rinsing process, the temperature detected by the temperature detection means 12 becomes closer to the temperature of water supplied to the dishwasher, that is, the temperature of tap water, as the number of normal rinsing processes increases. On the other hand, when the object 3 to be cleaned detected by the turbidity detecting means 16 is less contaminated, the number of normal rinsing steps is 2 to 1 as indicated by the dotted line in FIGS. In this case, however, the temperature detected by the temperature detecting means 12 is increased at the start of the heating rinsing process because it is greatly influenced by the washing water 2 and the washing tank 2 that retains heat in the washing process. Have a tendency.

As a result, as shown in FIG. 9, the temperature detected by the temperature detecting means 12 becomes higher than the reference temperature T0 at the start of the heating rinsing process depending on the water temperature, the environmental temperature, the number of normal rinsing processes, etc. There is a case where the amount of the cleaning object 3 cannot be detected. However, even when the temperature detected by the temperature detector 12 is equal to or higher than the reference temperature T0 at the start of the heating rinsing process, the detected temperature is lowered by stirring and circulating the cleaning water in the cleaning tank 2 at the beginning of the heating rinsing process. There is also a case where the detected temperature is equal to or lower than the reference temperature T0.

In order to solve this problem, even if the temperature detected by the temperature detecting means 12 is higher than the reference temperature T0 of the cleaning water at the start of the heating rinsing process, the cleaning pump 9 is driven to agitate the cleaning water. By circulating, once the detected temperature becomes lower than the reference temperature T0 in the process of heating and rinsing, a detection method is adopted in which the time required for raising the temperature from the reference temperature T0 to the target temperature T1 is measured again. The amount of the object 3 can be detected. Therefore, the amount of the object to be cleaned 3 can be detected without limiting the water temperature condition to be lower than necessary.

Further, when the temperature detected by the temperature detecting means 12 at the start of the heating rinsing process is higher than the reference temperature T0, the control means 18 is provided with a process for driving the cleaning pump 9 and stirring the cleaning water to cool the cleaning water. If so, the temperature of the cleaning water can be reliably lowered and the amount of the object to be cleaned 3 can be detected.

  Further, this is not limited to the turbidity detection means 16, but can be applied when changing the number of rinsing strokes and the operation sequence in order to operate with an appropriate amount of water and time.

  As described above, the dishwasher according to the present invention can detect an object to be cleaned more accurately, and thus is useful as a desktop type, a built-in type, and a commercial dishwasher.

DESCRIPTION OF SYMBOLS 1 Main body 2 Washing tank 3 Object to be washed 4 Tableware basket 5 Storage part 6 Washing means 7 Washing water circulation path 8 Vegetable filter 9 Washing pump 10 Dividing mechanism 11 Fixed washing nozzle 12 Temperature detection means 13 Heating means 14 Light emitting part 15 Light receiving part 16 turbidity detection unit 17 turbidity detection injection port 18 control hands stage
40 Insertion part 41 Insertion rib (position restriction part)
42 Turbidity Detection Unit 43 Fixed Cleaning Nozzle Side Rib 44 Cleaning Tank Side Rib (Position Restriction Unit)
45 1st water channel 46 2nd water channel 47 Turbidity detection water channel 50 Water supply means

Claims (2)

A dishwasher that sprays washing water to wash an object to be cleaned,
A cleaning tank for storing the object to be cleaned, a cleaning means for spraying the cleaning water pumped by the cleaning pump onto the object to be cleaned, a heating means for heating the cleaning water, and a temperature of the cleaning water provided on the outer wall of the cleaning tank Temperature detecting means for detecting the turbidity, and turbidity detecting means for detecting the turbidity of the washing water ,
The washing process for washing the object to be cleaned, the normal rinsing process for rinsing the object to be cleaned after drainage and water supply are performed, and the object to be cleaned while the washing water is heated by the heating means after draining and water supply is performed A heating rinsing process for injecting the product, and a control means for changing the number of times of the normal rinsing based on the detection result of the turbidity detecting means ;
When the temperature detected by the temperature detecting means at the start of the heating rinsing process is lower than the reference temperature T0, the control means measures the time required for temperature increase from the reference temperature T0 to the target temperature T1, and the turbidity By reducing the number of times of the normal rinsing based on the detection result of the degree detecting means, the temperature detected by the temperature detecting means at the start of the heating rinsing process becomes higher than the reference temperature T0, and from the start of the heating rinsing process. When the cleaning water temperature after the lapse of a predetermined time after driving the cleaning pump becomes lower than the reference temperature T0, the temperature increase time is set after the detected temperature of the temperature detecting means becomes lower than the reference temperature T0. A dishwasher that measures the time required for the temperature to rise from the reference temperature T0 to the target temperature T1 after the start of measurement, and detects the amount of the object to be cleaned. 2. The control unit according to claim 1, wherein when the temperature detected by the temperature detection unit at the start of the heating rinse process is higher than the reference temperature T <b> 0, the cleaning pump is driven to agitate the cleaning water to cool the cleaning water. The dishwasher described.