JP2006061185A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable dishwasher capable of controlling whether or not feeding wash water for every washing nozzle out of a provided plurality of washing nozzles, saving the wash water of the dishwasher and eliminated from reducing the efficiency of washing tableware. <P>SOLUTION: This dishwasher is provided with a washing pump 5 circulating water to be fed in a washing tub 2, and a plurality of washing nozzles 4, 4, etc., washing the tableware 20 by injecting the water from the washing pump 5 to the tableware 20. A washing water distribution device 10 having a plurality of valve elements changing over according to need for feeding water every washing nozzle 4 is connected to a discharge port of the washing pump 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a highly reliable dishwasher that can save water consumption.

  FIG. 5 is a schematic diagram showing a configuration of a main part viewed from the front of a conventional dishwasher. The dishwasher is provided with a washing tub 2 for storing tableware 20 to be washed inside the housing 1, and in the washing tub 2, a tableware holder 3 on which the tableware 20 is placed, and a lower side of the tableware holder 3. A plurality of rotatable cleaning nozzles 4, 4 that are arranged on the side and spray water toward the tableware 20 placed on the tableware holder 3, and cleaning that supplies pressurized water to the cleaning nozzles 4, 4 via a distribution valve A pump 5 and a heater 6 for heating the cleaning water in the cleaning tank 2 are provided.

  One end of a washing water circulation path 7 is connected to the spray nozzle 4, and the other end of the washing water circulation path 7 is connected to a drain port 8 provided at the bottom of the washing tank 2. The cleaning pump 5 is provided in the middle of the cleaning water circulation path 7, and the cleaning water supplied from the water supply port 9 and sprayed from the cleaning nozzles 4, 4 passes through the drain port 8 and the cleaning water circulation path 7, and is again cleaned. 4 is supplied.

In order to save the cleaning water sprayed from the cleaning nozzles 4, 4, for example, in Patent Document 1, the cleaning water is not simultaneously sprayed from a plurality of cleaning nozzles 4, 4 via a distribution valve. Washing water was supplied to the washing nozzles 4 and 4.
JP 2001-218721 A

  However, in the conventional dishwasher like patent document 1, the distribution valve is provided in the discharge port side of the washing pump 5, and the valve body is also one. When only one distribution valve for switching the cleaning nozzles 4 and 4 to which the cleaning water is supplied is provided, it may take time to switch the supply direction of the cleaning water depending on the size and weight of the valve body. There was a problem that the water-saving effect was halved.

  Moreover, the contact surface of the valve body and the edge part which forms the opening part of the washing water circulation path 7 at the discharge port side of the washing pump 5 is wide, and the edge part where dirt such as oil contained in the washing water forms the opening part. By adhering to the portion, there is a problem that the adhesiveness of the contact portion between the valve body and the edge portion forming the opening increases, and the valve body may not be able to perform normal operation.

  Furthermore, since the water pressure from the cleaning pump 5 is distributed to the plurality of cleaning nozzles 4, 4,. For this reason, the installation cost of the washing pump 5 and the like is increased, and the space for installing these is also increased, which makes it difficult to reduce the size and weight of the dishwasher.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a highly reliable dishwasher that can save washing water of the dishwasher and does not reduce the washing performance of the dishwasher. To do.

  It is another object of the present invention to provide a dishwasher that can control whether or not to supply cleaning water to each of a plurality of cleaning nozzles, and can save cleaning water.

  In order to achieve the above object, a dishwasher according to the present invention includes a washing pump that circulates water supplied into a washing tub, and a plurality of washing dishes by spraying water from the washing pump onto the tableware. In the dishwasher provided with the washing nozzle, a washing water distributor having a plurality of valve bodies for switching whether or not to supply water for each washing nozzle is connected to the discharge port of the washing pump. Features.

  In the present invention, the cleaning water supply device is used to supply or stop the supply of cleaning water according to the operation of the valve body for each of a plurality of cleaning nozzles. As a result, it is possible to supply cleaning water only to cleaning nozzles that need to be supplied with cleaning water, and by avoiding unnecessary supply of cleaning water, it is possible to reduce the amount of water used for washing dishes. Become.

  In the dishwasher according to the present invention, the washing water distributor is a housing that can be rotated by rotation of a drive source, and one or more substantially spherical valves that can move up and down in the housing. And a water supply path to the cleaning nozzle is shut off by the valve body pushed up in accordance with the flow of water from the discharge port.

  In the present invention, the washing water distribution device pushes up one or a plurality of valve bodies provided at predetermined positions of the rotatable housing by the water flow from the discharge port of the washing pump, thereby washing the valve bodies corresponding to the valve bodies. The water supply path to the nozzle is shut off, and control is performed so as not to supply cleaning water. As a result, the cleaning water is supplied to the cleaning nozzle that does not require supply of cleaning water by moving the position of the valve body to the position of the water supply port of the cleaning nozzle that does not require supply of cleaning water by rotating the housing. By avoiding unnecessary supply of cleaning water, it is possible to reduce the amount of water used for washing dishes.

  The dishwasher according to the present invention is characterized in that the number of the valve bodies is smaller than the number of the washing nozzles.

  In the present invention, the number of valve bodies is less than the number of cleaning nozzles, so that when the valve body is pushed up by the water flow from the discharge port of the cleaning pump, the water supply ports of one or more cleaning nozzles are opened, The cleaning water can be supplied to one or more cleaning nozzles. Therefore, it is possible to select a cleaning nozzle that needs to be supplied with cleaning water and supply cleaning water, and to avoid unnecessary supply of cleaning water.

  In addition, the dishwasher according to the present invention is characterized by including a regulating member that regulates the valve body so as to allow only the vertical movement.

  In the present invention, by restricting the spherical valve body so that it can only move up and down, the valve body can be surely pushed up to the water supply port of the cleaning nozzle, and the housing is rotated and moved to supply cleaning water. Accordingly, it is possible to supply the cleaning water only to the cleaning nozzles that require the cleaning.

  According to the present invention, cleaning water can be supplied only to cleaning nozzles that need to be supplied with cleaning water, and the amount of water used for dishwashing can be reduced by avoiding unnecessary supply of cleaning water. Is possible.

  In addition, when the valve body is pushed up by the water flow from the discharge port of the cleaning pump because the number of valve bodies is smaller than the number of cleaning nozzles, the water supply port of at least one cleaning nozzle is opened, and one or more The cleaning water can be supplied to the cleaning nozzle. Therefore, it is possible to select a cleaning nozzle that needs to be supplied with cleaning water and supply cleaning water, and to avoid unnecessary supply of cleaning water.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic diagram showing a main configuration of the dishwasher according to the embodiment of the present invention as viewed from the front. In addition, the same code | symbol is attached | subjected about the component similar to the conventional dishwasher.

  The dishwasher is provided with a cleaning tank 2 for storing tableware 20 to be cleaned inside the housing 1, and water is sprayed into the cleaning tank 2 toward the tableware 20 placed on the tableware holder 3. A plurality of rotatable cleaning nozzles 4, 4, a cleaning pump 5 that supplies pressurized water to the cleaning nozzles 4, 4, and a heater 6 that heats the cleaning water in the cleaning tank 2 are provided.

  The cleaning nozzles 4 and 4 are connected to a cleaning water circulation path 7 which is a discharge side of the cleaning pump 5 through a cleaning water distributor 10. Whether or not the cleaning water is supplied to each cleaning nozzle 4 is switched by a valve body built in the cleaning water distributor 10.

  FIG. 2 is a plan view showing the configuration of the washing water distribution apparatus 10 for the dishwasher according to the embodiment of the present invention, and FIG. 3 shows the washing water distribution apparatus 10 for the dishwasher according to the embodiment of the present invention. It is sectional drawing in the III-III line. In the present embodiment, a dishwasher including three washing nozzles 4 will be described.

  The cleaning water distributor 10 includes a discharge port 102 of a cleaning water circulation path 7 through which cleaning water is discharged from the cleaning pump 5 at the lower part, and is connected so as to be able to supply cleaning water from the lower part of the housing 104 to the upper surface. is there. On the upper surface of the housing 104, water supply ports 103, 103, 103 that are separately connected to the cleaning nozzles 4, 4, 4 are provided.

  A spherical valve body 101 having an outer diameter larger than the inner diameter of the side wall 106 is provided inside the cylindrical side wall 106 forming the water supply ports 103, 103, 103. The valve body 101 is provided in two water supply ports 103, 103 among the three water supply ports 103, 103, 103.

  The valve bodies 101 and 101 can move in the direction of the rotation axis of the housing 104 that can be rotated by the motor 105 that is a driving source, and the central angle around the rotation axis of the housing 104 is a substantially uniform position, that is, Two of the positions where the central angle is approximately 120 degrees are arranged.

  When the cleaning water is supplied into the housing 104 from the discharge port 102 through which the cleaning water from the cleaning pump 5 is discharged, the valve body 101 moves toward the water supply port 103 by the water pressure of the cleaning water. Then, the water supply port 103 is closed by the valve body 101, and the supply of cleaning water to the cleaning nozzle 4 connected to the water supply port 103 can be shut off.

  The washing water distributor 10 communicates with the cylindrical side wall 106 that forms the water supply ports 103, 103, 103, and has an inner diameter that is substantially equal to the outer diameter of the valve body 101 or larger than the outer diameter of the valve body 101. It is desirable to include the member 107. The restriction member 107 restricts the operation of the valve body 101 so that the valve body 101 can move only in the direction of the rotation axis of the housing 104. Therefore, the valve body 101 can discharge the cleaning water from the cleaning pump 5 from the discharge port 102, and can reliably move toward the water supply port 103 by the water pressure of the discharged cleaning water, and can close the water supply port 103. .

  The rotation of the motor 105 that is the drive source of the housing 104 is controlled by the control device 30 to rotate the housing 104 and close the water supply port 103 connected to which cleaning nozzle 4.

  FIG. 4 is a block diagram showing a configuration of the control device 30 of the dishwasher according to the present embodiment. As shown in FIG. 4, the control device 30 includes a CPU (central processing unit) 31, a ROM 32, a RAM 33, a clock 34 for measuring time, an input / output port 35, and the like, which are connected to each other by an internal bus 36. ing. The input / output port 35 controls the cleaning pump 5 that supplies the cleaning water to the cleaning nozzles 4, 4, 4, and the cleaning nozzle 4, 103, 103 connected to the water supply ports 103, 103, 103 connected to the cleaning nozzle A motor 105 of the cleaning water distribution device 10 that performs the cleaning, a heater 6 that heats the cleaning water, and the like are connected.

  The CPU 31 of the control device 30 controls a sequence such as dishwashing by executing a program stored in the ROM 32 using the RAM 33 as a working area. For example, the cleaning water is supplied to the water supply ports 103, 103, 103 connected to the cleaning nozzles 4, 4, 4, or the rotation of the motor 105 of the cleaning water distributor 10 is controlled to rotate the housing 104 and close it. The valve body 101 is moved under the water supply port 103 to be operated.

  The operation of the dishwasher having the above-described configuration will be described. First, the water supply valve 15 is opened to supply cleaning water to the cleaning tank 2, and when the specified amount of water is reached, the cleaning pump 5 is activated, and the cleaning water in the cleaning tank 2 passes through the cleaning pump 5 to a plurality of cleaning nozzles. 4, 4, and 4. Then, cleaning water is sprayed from the cleaning nozzles 4, 4, 4 toward the tableware 20 placed on the tableware receiver 3. The cleaning nozzles 4, 4, 4 are rotated by this water discharge reaction.

  The sprayed cleaning water returns to the lower part of the cleaning tank 2 through the filter 11 and is again sucked into the cleaning pump 5. Thereby, the leftovers adhering to the tableware 20 are filtered.

  The cleaning water is heated by the heater 6 and the cleaning effect can be further increased by raising the temperature. A water temperature is detected by a temperature sensor (not shown) provided in the course of the cleaning water, and the control device 30 controls the temperature of the cleaning water, the injection time, and the like.

  The cleaning nozzle 4, 4, 4 for supplying the cleaning water in the cleaning tank 2 pumped up by the cleaning pump 5 is selected by the cleaning water distributor 10. The cleaning water distributor 10 is provided with an independent spherical valve body 101 and closes the water supply port 103 that supplies the cleaning water to the cleaning nozzle 4 by the flow of cleaning water supplied from the discharge port 102 of the cleaning pump 5. .

  In the present embodiment, two valve bodies 101, 101 are provided for the three cleaning nozzles 4, 4, 4. The valve bodies 101 and 101 are pushed up by the water pressure of the cleaning water supplied from the discharge port 102 of the cleaning pump 5 to the cleaning water distributor 10, and the water supply ports 103 and 103 that supply water to the plurality of cleaning nozzles 4 and 4 are closed. To do.

  Since the water supply port 103 in which the valve body 101 is not provided is in the open state, the cleaning water supplied from the discharge port 102 of the cleaning pump 5 is connected to the cleaning nozzle 4 connected from the water supply port 103 in the open state. And is injected into the cleaning tank 2.

  The valve bodies 101 and 101 are provided on a housing 104 that can be rotated by a motor 105. The rotation of the motor 105 is controlled by an instruction signal sent from the CPU 31 of the control device 30 so that the valve bodies 101 and 101 are positioned under the water supply ports 103 and 103 of the cleaning nozzles 4 and 4 that do not supply cleaning water. The housing 104 is rotated.

  As a result, it is possible to supply cleaning water only to the cleaning nozzle 4 that needs to supply cleaning water, and by avoiding unnecessary supply of cleaning water, the amount of water used for dish washing can be reduced. It becomes.

  Moreover, since the valve body 101 is independently provided for each water supply port 103, the valve body 101 can be reduced in size, the weight of the valve body 101 can be reduced, and the valve body 101 can be reduced in weight. Thus, the responsiveness of the vertical movement of the valve body 101 to the water pressure of the cleaning water supplied from the discharge port 102 of the cleaning pump 5 can be improved. Further, even when one valve body 101 becomes inoperable due to dust or the like in the washing water, the operation of the other valve body 101 is not affected.

  The cleaning water distributor 10 is provided with a regulating member 107 so that the valve body 101 can be moved up and down accurately. The restricting member 107 restricts the operation so that the valve body 101 can be moved only in the direction of the rotation axis of the housing 104. The regulating member 107 is, for example, a cylindrical member whose lower part is opened to the housing 104, and has an inner diameter that is substantially equal to or larger than the outer diameter of the valve body 101. As a result, when the cleaning water from the cleaning pump 5 is supplied from the discharge port 102 into the cleaning water distributor 10, the valve body 101 causes the valve body 101 to move in a direction perpendicular to the rotation axis of the housing 104. It is possible to prevent the water from flowing, and the water supply port 103 can be reliably closed.

  Further, the valve elements 101 and 101 pushed up by the cleaning water supplied from the discharge port 102 of the cleaning pump 5 and the end portions of the side walls 106 forming the water supply ports 103 and 103 are packed to maintain liquid tightness. May or may not be provided. When packing or the like is provided, the water-stopping property is increased, and unnecessary cleaning water is not supplied to the cleaning nozzles 4, 4,.

  When no packing or the like is provided, the valve body 101 does not adhere to the water supply port 103. However, by not sticking, dirt such as oil contained in the wash water does not cause stickiness due to adhesion between the valve body 101 and the end of the side wall 106 forming the water supply port, The smooth movement of the valve body 101 is promoted.

  Further, an urging member that presses the valve body 101 against the water supply port 103 may be provided in order to increase the water stoppage. As such a biasing member, an elastic member such as a spring is used.

  On the other hand, even if a biasing member that presses the valve body 101 against the water supply port 103 is not provided, the contact resistance between the valve body 101 and the side wall 106 that forms the water supply port 103 can be reduced. Accordingly, the switching of the cleaning nozzle 4 to be supplied with water can be performed smoothly, and the durability can be improved.

  The above-described embodiment can achieve the same effect even in a multi-function machine including the function of a dishwasher. For example, the same effect can be obtained in a dishwasher.

It is a schematic diagram which shows the principal part structure seen from the front of the dishwasher which concerns on embodiment of this invention. It is a top view which shows the structure of the washing water distribution apparatus of the dishwasher which concerns on embodiment of this invention. It is sectional drawing in the III-III line of the washing water distribution apparatus of the dishwasher which concerns on embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the dishwasher which concerns on this Embodiment. It is a schematic diagram which shows the principal part structure seen from the front of the conventional dishwasher.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Washing tank 4 Washing nozzle 5 Washing pump 6 Heater 7 Washing water circulation path 10 Washing water distribution apparatus 30 Control apparatus 101 Valve body 102 Discharge port 103 Water supply port 104 Housing 105 Motor (drive source)
107 Restriction member

Claims (4)

In a dishwasher comprising a washing pump that circulates water supplied into a washing tank, and a plurality of washing nozzles that wash dishes by jetting water from the washing pump onto the dishes,
A dishwasher, wherein a washing water distribution device having a plurality of valve bodies for switching whether or not to supply water for each washing nozzle is connected to a discharge port of the washing pump.   The washing water distribution device has a housing that can be rotated by rotation of a drive source, and one or a plurality of substantially spherical valve bodies that can move up and down in the housing. 2. The dishwasher according to claim 1, wherein the water supply path to the washing nozzle is blocked by the valve body pushed up according to the flow of water.   The dishwasher according to claim 2, wherein the number of the valve bodies is less than the number of the washing nozzles.   4. The dishwasher according to claim 2, further comprising a regulating member that regulates the valve body so as to allow only a vertical movement.

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