KR20060087396A - Dishwasher - Google Patents

Abstract

The water fountain 17 supplies the washing water in order to the washing nozzles 13a, 13b, 13c, and 13d. The detector 26 detects an increase in the turbidity of the washing water, specifies a washing nozzle for washing the dirty dishes, and can increase the injection time of the washing water from the washing nozzle.

Description

Dishwasher {DISHWASHER}

1 is a cross-sectional view of the dish washer according to the first embodiment of the present invention;

FIG. 2 is a perspective view of a water fountain in the dish washing machine shown in FIG. 1; FIG.

3 is a cross-sectional view of the fountain in the dish washing machine shown in FIG. 1;

4 is a cross-sectional view of a water fountain in the dish washer according to the second embodiment of the present invention;

5 is a cross-sectional view of a conventional dishwasher.

Explanation of symbols for the main parts of the drawings

2: washing tank 5: washing pump

10: tableware housing 17: water fountain

20: case 21: movable valve body

24: motor 26: detector

29: shield plate 30: magnetic sensor

The present invention relates to a dishwasher for washing dishes by spraying the washing water.

5 is a cross-sectional view of a conventional dish washing machine disclosed in Japanese Patent Laid-Open No. 2001-218721. The washing tank 2 is installed inside the dish washing machine 1. The cleaning nozzles 13a, 13b, 13c, and 13d pass the water fountain 14 and the water channel 16 from the cleaning pump 5 to inject the washing water, which is pumped from the injection hole 13e, to the reaction force of the injection. This rotates around the central axis 13f. The washing water sprayed from the washing nozzle washes the dishes 9 in the dish housing 10, and then returns to the washing pump 5 through a drainage path (not shown) for circulation. Remnants dropped from the tableware 9 are collected by a residual filter (not shown) in the drainage path.

The water fountain 14 switches the outflow path of the washing water using the motor 15, and sequentially supplies the washing water to each of the washing nozzles 13a, 13b, 13c, and 13d.

The dishwasher according to the present invention is divided into a plurality of cleaning nozzles for ejecting the washing water, a water fountain having a plurality of outlets communicating with each of the plurality of cleaning nozzles, and a plurality of cleaning nozzles so as to sequentially supply the washing water to one of the plurality of cleaning nozzles. A movable valve body for switching the water outlet portion, and a detector for detecting the position of the movable valve body and turbidity of the washing water.

Since the dishwasher of this invention can detect the dirt of a tableware from the turbidity of washing water, it can change the injection time of the washing water of a washing nozzle according to the dirt of the dishware to wash | clean.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described, referring drawings. In addition, this invention is not limited by this embodiment.

Embodiment 1

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the dishwasher in embodiment of this invention. The washing tank 2 is installed inside the dish washing machine 1. The cleaning nozzles 13a, 13b, 13c, and 13d pass the water fountain 17 and the water channel 16 from the cleaning pump 5 to inject the washing water, which is pumped from the injection hole 13e, to the reaction force of the injection. This rotates around the central axis 13f. The washing water sprayed from the washing nozzle is used after washing the dishes 9 in the dish housing 10 and returning back to the washing pump 5 through a drainage path (not shown). The residue left off from the dishes 9 is collected by a residue filter (not shown) in the drainage path. The water fountain 17 is installed in the discharge port 5a of the cleaning pump 5.

2 is a perspective view of the fountain 17, and FIG. 3 is a cross-sectional view of the fountain 17. An inlet portion 18 through which the washing water pressurized by the washing pump 5 flows is installed in the lower side of the case 20, and the outflow path 23 and the water channel (13) are respectively disposed in the washing nozzles 13a, 13b, 13c, and 13d. Four outlets 19 communicating through 16) (see Fig. 1) are provided on the upper surface of the case 20. A substantially planar movable valve body 21 having an opening 22 in the case 20 is disposed to face the outlet 19. The motor 24 rotationally drives the movable valve body 21 mounted on the motor shaft 25.

The water fountain 17 has a detector 26 that detects both the position of the movable valve body 21 and the turbidity of the washing water. The detector 26 has a light emitting portion 27 and a light receiving portion 28 for receiving light from the light emitting portion 27. Both the light emitting portion 27 and the light receiving portion 28 are disposed on the side of the case 20. Both of the light emitting surface 27a of the light emitting portion 27 and the light receiving surface 28a of the light receiving portion 28 face the inside of the case 20. Moreover, the movable valve body 21 has the shielding plate 29 which interrupts the light which the light receiving part 28 receives.

The operation of the water fountain 17 configured as described above will be described. The motor 24 intermittently rotates the movable valve body 21 so that the opening portion 22 temporarily stops at each outlet portion 19. While the movable valve body 21 is temporarily stopped, the washing water is supplied through an outlet portion 19 coinciding with the opening portion 22, and the washing water is injected from the washing nozzle communicating with the outlet portion 19. When the pause time of the movable valve body 21 is lengthened, the injection time of the washing nozzle which communicates with the outflow part 19 becomes long. Conversely, when the temporary stop time of the movable valve body 21 is shortened, the injection time of the cleaning nozzle is shortened. That is, the injection time of each washing nozzle can be changed individually by changing the pause time of the movable valve body 21 in each outflow part 19 individually.

As the movable valve body 21 rotates, the outflow part 19 for supplying the washing water is sequentially switched, and the washing water is sprayed in the order of the washing nozzles 13a, 13b, 13c, and 13d. When the movable valve body 21 rotates and the shield plate 29 moves to a predetermined position, the shield plate 29 blocks the light received by the light receiving unit 28, whereby the position of the movable valve body 21 is detected. do.

In this way, the injection time of each cleaning nozzle can be changed according to the situation of a cleaning operation. Since the washing water is supplied in the order of the washing nozzles 13a, 13b, 13c, and 13d, the washing water can be injected onto the dish 9 from a plurality of directions without increasing the amount of washing water.

Contamination occurs in the washing water due to the dirt dropped from the tableware 9 during washing. The turbidity of the washing water, that is, the contamination of the washing water, is measured from the intensity of light received by the light receiving portion 28 of the detector 26. The detector 26 only detects the shielding plate 29, but supplies washing water to all the cleaning nozzles 13a, 13b, 13c, and 13d from a control state such as a rotation time or a stop time of the movable valve body 21. You can also detect the condition and turbidity.

Below, some examples of efficient washing | cleaning are demonstrated.

(1) If, for example, the dirt of the washing water increases when the cleaning nozzle 13a is used, the cleaning nozzle 13a is considered to wash dishes with a large amount of dirt or to wash a large amount of dishes. The injection time from 13a is lengthened.

(2) When there are few dishes to be washed and it is not necessary to spray from the cleaning nozzle 13a, for example, the spraying time from the cleaning nozzle 13a is made to be very short time of 1 second or less, so that it is almost impossible to spray from the cleaning nozzle 13a. Do not The cleaning operation is performed by spraying from the cleaning nozzles 13b, 13c, and 13d.

(3) The final rinse is sprayed for a short time from the cleaning nozzle 13c provided above the dish housing 10. If the rinsing can be determined to be insufficient from the turbidity of the washing water, the rinsing operation is added.

When foreign matter is caught between the opening part 22 and the outlet part 19 and the movable valve body 21 cannot move, since the shielding plate 29 does not come to a predetermined position, the detector 26 causes an accident. Is detected and the user is notified. In this case, it is also possible to repeat the forward rotation and the reverse rotation of the motor 24 to attempt to remove the foreign matter.

As mentioned above, the dishwasher of this embodiment detects the increase in turbidity of washing water, recognizes the washing nozzle which wash | cleans the dish with many dirts, and the washing nozzle which wash | cleans the dish with little dirt, and efficiently wash | cleans. You can run

Embodiment 2

4 is a cross-sectional view of a water fountain in the dish washer according to the second embodiment of the present invention. About the same part as Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 4, the detector 32 which detects the position of the movable valve body 21 detects the magnet 31 stuck to the outer periphery of the movable valve body 21, and the magnetic flux of the magnet 31. As shown in FIG. Which has a magnetic sensor 30. The magnetic sensor 30 is disposed near the case 20, but is disposed on the side opposite to the motor 24 with respect to the case 20 in order to avoid magnetic flux from the motor 24. The case 20 and the movable valve body 21 are formed of a nonmagnetic material. When the movable valve body 21 rotates and the magnet 31 reaches a predetermined position, the magnetic sensor 30 detects the magnetic flux of the magnet 31 and the position of the movable valve body 21 is detected. The motor 24 intermittently drives the movable valve body 21 so that the opening portion 22 temporarily stops at each outlet portion 19. Thereby, the supply of the washing water to the washing nozzles 13a, 13b, 13c, and 13d can be switched.

The operation of the dish washing machine of the present embodiment will be described with reference to FIG. 1. In this embodiment, the dirt strongly fixed in the tableware housing 10 and the tableware 9 which are hard to reach the washing water in shape are placed above the washing nozzle 13a, and the tableware such as a dish is relatively easy to fall off. It is assumed that 9 is placed above the cleaning nozzle 13b. Therefore, the motor 24 lengthens the pause time of the movable valve body 21 so that the injection time of the cleaning nozzle 13a may be longer than the injection time of the other cleaning nozzles (refer to Embodiment 1).

Specifically, when the movable valve body 21 moves to the outflow part 19 which communicates with the washing nozzle 13a, the pause time is lengthened compared with the case where it moves to another position. When the movable valve body 21 moves to the outflow portion 19 communicating with the cleaning nozzle 13b or the cleaning nozzle 13d, the pause time is shorter than when the cleaning water is supplied to the cleaning nozzle 13a. . When the movable valve body 21 moves to the outflow part 19 which communicates with the washing | cleaning nozzle 13c, since rinsing washing | cleaning is the objective, when a washing | cleaning water is supplied to the washing | cleaning nozzle 13b or the washing nozzle 13d. Make the pause time shorter.

In addition, since the case 20 and the movable valve body 21 of the water fountain 17 are made of a nonmagnetic material, magnetism from the magnet 31 is not blocked. As a result, the magnetic sensor 30 operates reliably without malfunction. In addition, since the installation of the magnetic sensor 30 to the water fountain 17 is also made of a nonmagnetic material, malfunction of the magnetic sensor 30 due to another magnetic field can be prevented.

In addition, since the detector 32 including the magnet 31 and the magnetic sensor 30 is disposed on the side opposite to the drive motor 24 with respect to the case 20, the magnetic field generated from the drive motor 24 is generated. Malfunction of the detector 32 can also be prevented.

As described above, the dish washing machine of the present embodiment can set the washing nozzle and the spraying time to be selectively used according to the dirt of the dish, and can perform efficient washing.

Claims (4)

In the dishwasher, A washing tank accommodating the object to be cleaned, A washing pump for pressurizing the washing water, A plurality of cleaning nozzles disposed in the cleaning tank and having a jet port for ejecting the cleaning water; A water fountain having a plurality of outlet portions connected to the downstream side of the washing pump and communicating with the plurality of washing nozzles, respectively; A movable valve body which is built in the water fountain and switches the outlet to sequentially supply the washing water to at least one of the plurality of washing nozzles; And a detector for detecting the position of the movable valve body and the turbidity of the washing water. dish washer. The method of claim 1, The detector has a light emitting portion for generating light, a light receiving portion for receiving light from the light emitting portion, and the movable valve body has a shielding plate for shielding light received by the light receiving portion. dish washer. In the dishwasher, A washing tank accommodating the object to be cleaned, A washing pump for pressurizing the washing water, A plurality of cleaning nozzles disposed in the cleaning tank and having a jet port for ejecting the cleaning water; A water fountain having a plurality of outlet portions connected to the downstream side of the washing pump and communicating with the plurality of washing nozzles, respectively; A movable valve body which is built in the water fountain and switches the outlet to sequentially supply the washing water to at least one of the plurality of washing nozzles; And a detector having a magnet provided in the movable valve body and a magnetic sensor for detecting magnetic flux from the magnet, the detector detecting a position of the movable valve body. dish washer. The method of claim 3, wherein A motor for driving the movable valve element is provided, and the detector and the motor are arranged on opposite sides with respect to the water fountain. dish washer.

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