JP2008104474A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To wash dishes with the noise quantity matching the position and behavior of a person in the interior in an optimum washing period, regardless of the quantity, kind or way of arrangement of the dishes. <P>SOLUTION: The dishwasher includes a motor 8 for driving a washing pump 5; a control means 22 for controlling the driving of the motor 8; and a human body sensing means 18. The control means 22 stops the operation when the human body is sensed by the output of the human body sensing mans 18 and starts the operation when separation of the human body is detected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher for washing dishes.

Conventionally, noise countermeasures for this type of dishwasher have been implemented by providing soundproofing measures by the structure of the dishwasher and providing a low-noise course for driving the motor that drives the washing pump at a low speed (for example, Patent Documents). 1).
Japanese Utility Model Publication No. 4-130756

  However, one of the major causes of dishwasher noise is the sound of the sprayed washing water directly hitting the washing tank. Depending on the amount and type of dishes to be washed and the way they are placed, The noise tends to increase as the ratio of direct hitting the washing tank increases. It is costly to deal with this problem with soundproofing measures using a structure, and the low-noise course that drives the motor that drives the cleaning pump at a low speed is related to the amount and type of dishes to be cleaned, and how to place them. However, since the motor is driven at a low rotation speed, there is a problem that it takes time to achieve both cleaning performance and the like.

  In addition, since the dishwasher is used in a state where the user does not directly operate the device at the time of a meal after dinner or at night, the noise tends to hinder the appreciation of sleep, conversation, TV and the like.

  The present invention solves the above-mentioned problems, and is optimal for the amount of noise according to the position and behavior of the person in the room, regardless of the amount and type of tableware to be cleaned and the manner of arrangement. An object of the present invention is to provide a dishwasher that performs washing in a proper washing time.

  In order to achieve the above object, a dishwasher of the present invention comprises a motor that drives a washing pump, a control unit that controls driving of the motor, and a human body detection unit, and the control unit includes the human body. When the output of the detection means detects a human body, it stops, and when it detects that the human body has left, it starts driving.

  As a result, it is possible to perform cleaning in an optimal cleaning time with an amount of noise that matches the position and behavior of people in the room, regardless of the amount and type of tableware to be cleaned, and the manner of arrangement. Become.

  The dishwasher according to the present invention cleans in an optimal cleaning time with a noise level that matches the person's position and behavior in the room, regardless of the amount, type, and arrangement of dishes to be cleaned. be able to.

  1st invention is a washing tank which accommodates to-be-washed objects, such as tableware, a washing pump which pressurizes washing water in the washing tank, and the washing water pressurized by the washing pump is injected into the washing tank A cleaning nozzle, a motor for driving the cleaning pump, a control means for controlling the driving of the motor, and a human body detection means, wherein the control means detects the human body as an output of the human body detection means Stops when a person approaches the dishwasher to a predetermined distance by detecting that the human body has left, and the person stops at a predetermined distance from the dishwasher. Since the operation is resumed when moving away from the above, the optimal cleaning time with the amount of noise that matches the position and behavior of the person in the room, regardless of the amount, type, and arrangement of dishes to be cleaned. Can be cleaned with .

  According to a second invention, in the first invention, the human body detection means is provided outside the dishwasher main body, and the output of the human body detection means is input to the control means via the communication means. It is possible to accurately detect the position of the human body in the whole and predict the behavior at that position, and it is possible to wash with the optimal washing time with the amount of noise matching the position and behavior of the person in the room Is possible.

  According to a third invention, in the first or second invention, the human body detection means has communication means with other equipment, so that noise control in the room including the other equipment can be performed. At the time of appreciation, it is possible to operate in conjunction with, for example, driving while reducing the noise of equipment that is a noise source including other dishwashers while maintaining only the volume of the TV.

  According to a fourth invention, in any one of the first to third inventions, the control means has a clock function, and the driving of the clock means is performed at a low jet force at night by the output of the clock means, so that sleep Even when the user is not in the room, cleaning can be performed in a situation where there is little influence of noise on the user.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
1 to 3, reference numeral 1 denotes a washing tank formed in the main body 2 of the dishwasher, which is installed so as to be able to take out a tableware basket 3 for setting tableware to be washed. A water storage section 4 for storing water is provided at the bottom of the cleaning tank 1. Water is supplied to the cleaning tank 1 through a water supply path (not shown) provided with a water supply valve (not shown) for stopping or supplying tap water, and the supplied water is kept at a predetermined water level. This is performed by a water level sensor (not shown) and the control means 22.

  A cleaning pump 5 pressurizes the water stored in the water storage unit 4. The rotating shaft 7 of the impeller 6 in the cleaning pump 5 and the rotating shaft 7 of the motor 8 that is a driving source of the cleaning pump 5 are concentric and substantially vertical. The cleaning pump 5 is disposed below the motor 8. Reference numeral 9 denotes a suction path through which cleaning water flows into the cleaning pump 5, which is provided between the cleaning pump 5 and a motor 8 that drives the cleaning pump 5, and is located near the center so as to surround the rotating shaft 7 of the impeller 6. Forming.

  The cleaning pump 5 is a centrifugal type in which the impeller 6 can be reversed in the forward and reverse directions. During forward rotation, the cleaning water is discharged from the first discharge port 10 and supplied to the cleaning nozzle 11, and the injection port 12 enters the cleaning tank 1. Spray. The cleaning nozzle 11 is provided so as to be rotatable in the horizontal direction, and is rotated by a reaction force when the cleaning water is sprayed from the spray port 12 so that it can be sprayed over a wide range in the cleaning tank 1. Reference numeral 13 denotes a switching valve, which closes the second discharge port 14 by the flow of cleaning water generated in the cleaning pump 5 toward the first discharge port 10 when the impeller 6 rotates in the forward direction. The second discharge port 14 is opened as a result of the reverse flow of the washing water at the time of rotation. By the operation of the switching valve 13, when the cleaning pump 5 is reversely rotated, the cleaning water is discharged from the second discharge port 14 to the outside of the apparatus.

  The drainage operation can also be performed by a drainage pump (not shown) provided separately from the cleaning pump 5, and these operations are performed by the control means 22 that controls the driving of the motor 8.

  A heater 15 heats the water stored in the water storage unit 4 and heats the air supplied into the cleaning tank 1 by a blowing means (not shown) during drying. Reference numeral 16 denotes a filter that supplements the leftovers attached to the tableware.

  Next, the operation in the above embodiment will be described. First, tap water is supplied to the inside of the cleaning tank 1 by the control means 22 and stored in the water storage section 4 provided at the bottom of the cleaning tank 1, and the water supply is stopped when the water level reaches a predetermined level. Next, the cleaning pump 5 rotates in the forward direction, and the cleaning water in the water storage section 4 is pressurized by the cleaning pump 5 and enters the cleaning pump 5 through the suction path 9 through the suction port 17 provided in the upper portion of the impeller 6. Washing water is discharged from the first discharge port 10 and supplied to the cleaning nozzle 11, and cleaning is performed by spraying from the spray port 12 toward the tableware placed in the tableware basket 3 in the cleaning tank 1.

  The wash water from which the dishes have been cleaned returns to the water storage unit 4 again. The cleaning water is heated by the heater 15 and becomes a moderately high temperature set in advance to increase the cleaning power. Contaminants of the cleaning water that has been cleaned are captured by the filter 16 and circulated to the cleaning pump 5 again. To prevent the reattachment of contaminants during cleaning. When the predetermined cleaning is completed, the cleaning pump 5 is reversed and the cleaning water is discharged from the second discharge port 14 to the outside of the apparatus.

  Since the dishwasher is used when the user does not operate the device directly at the time of the meal after dinner or at night, the noise tends to hinder the appreciation of sleep, conversation, TV and the like.

  As noise generated during the operation of the dishwasher, fluid sound generated in the path from the cleaning pump 5 and the suction path 9 to the cleaning nozzle 11, motor sound generated by the motor 8, and cleaning water are sprayed from the injection port 12. Spray sound, impact sound of sprayed washing water hitting tableware or washing tub 1, dripping sound generated when washing water after hitting tableware or washing tub 1 falls on the surface of water storage unit 4 or directly on washing tub 1 and so on.

  Among these, the collision sound that the sprayed washing water hits the tableware or the washing tub 1 increases the proportion of the sprayed washing water directly hitting the washing tub 1 depending on the amount, type, and arrangement of the tableware to be cleaned. Noise tends to increase. Moreover, although the washing water which directly hits the washing tank 1 hardly contributes to washing, it is difficult to carry out washing by predicting the amount and type of dishes to be washed and the manner of arrangement.

  Accordingly, the human body detection means 18 is provided, and the position of the user is detected by the human body detection means 18 at the start or during the cleaning process. As shown in FIG. 4, the control means 22 stops the rotation of the motor 8 that drives the washing pump 5 when the human body detection means 18 detects that the user is within a certain distance from the main body 2 of the dishwasher. And the influence of the noise of the main body 2 of the dishwasher on the user is suppressed.

  When it is detected that the user is away from the main body 2 of the dishwasher by a certain distance or more, the rotation of the motor 8 that drives the washing pump 5 is restarted to reduce the influence of noise on the user. It becomes possible to wash efficiently.

  Further, the control means 22 may have a clock function (not shown), and may operate with a low injection force at night by the output of the clock means regardless of the output result of the human body detection means 18. Further, the operation time may be extended in order to ensure the cleaning performance according to the reduction of the injection amount.

(Embodiment 2)
FIG. 5 shows the configuration of Embodiment 2 of the present invention. The human body detecting means 18 is provided outside the main body 2 of the dishwasher, and the positional relationship between the main body 2 of the dishwasher and the human body detecting means 18 The configuration may be such that the output of the human body detection means 18 is input to the control means 22 via the communication means. When installed outside the main body 2 of the dishwasher, it is possible to accurately detect the position of the human body in the entire room, and not only whether it is close to the main body 2 of the dishwasher, but also slightly away from the main body 2 of the dishwasher It is possible to predict behavior such as relaxing at a position, and it is possible to perform cleaning in an optimal cleaning time with a noise amount that matches the position and behavior of a person in the room.

(Embodiment 3)
In the third embodiment of the present invention, the human body detecting means 18 has means for communicating with other devices. Thereby, indoor noise control including other equipment can be performed. For example, when watching TV, it is possible to detect that the TV is turned on and operate with reduced noise from equipment that is a noise source, including a dishwasher, or to operate it in conjunction with it, such as temporarily stopping it. It becomes possible.

  As described above, the dishwasher of the present invention is optimum in the amount of noise that matches the position and behavior of the person in the room, regardless of the amount, type, and arrangement of the dishes to be cleaned. It becomes possible to wash in the washing time.

Sectional drawing of the dishwasher of Embodiment 1 of this invention Enlarged sectional view of the washing pump and motor of the dishwasher Inside plan view of the washing pump of the dishwasher Operation diagram of the dishwasher The block diagram of the dishwasher of Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing tank 5 Washing pump 8 Motor 11 Washing nozzle 18 Human body detection means 22 Control means

Claims (4)

A cleaning tank for storing objects to be cleaned such as tableware, a cleaning pump for pressurizing cleaning water in the cleaning tank, a cleaning nozzle for injecting cleaning water pressurized by the cleaning pump into the cleaning tank, A motor for driving the washing pump; a control means for controlling the driving of the motor; and a human body detection means. The control means stops when the output of the human body detection means detects the human body, A dishwasher that starts driving when it detects that it has left. 2. The dishwasher according to claim 1, wherein a human body detecting means is provided outside the dishwasher main body, and an output of the human body detecting means is inputted to the control means via the communication means. The dishwasher according to claim 1 or 2, wherein the human body detection means includes means for communication with other devices. The dishwasher according to any one of claims 1 to 3, wherein the control means has a clock function, and is operated with a low jet power at night by the output of the clock means.