JP2009056214A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain the reverse motion of rotation washing means by water dividing means while securing the easy installability of a body and the capacity of a washing tub. <P>SOLUTION: This dishwasher includes: water dividing means 5 which has a plurality of discharging passages 6 and which selectively supplies washing water discharged from a washing pump 4 to the discharging passages 6; rotating washing means 8 which has at least two water guiding passages 9 which communicate with the discharging passages 6 and delivers the washing water, and a bearing part 11 which is provided above the water dividing means 5, holds the rotation washing means 8 and serves as the center of the rotation. The washing pump 4 is arranged being away from the bearing part 11 of the rotation washing means 8 by a prescribed distance in the horizontal direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dishwasher for cleaning dishes and the like.

  Conventionally, the general dishwasher which has a washing | cleaning means which has at least 2 water conveyance path and switches a water conveyance path was made into the structure as shown in FIG. 12 (for example, refer patent document 1). Hereinafter, the configuration will be described.

  As shown in the figure, a cleaning tank 51 that stores cleaning water at the bottom and accommodates an object to be cleaned, and a cleaning pump that pressurizes and injects cleaning water using a motor 52 provided below the cleaning tank 51 as a driving source. 53, a cleaning nozzle 55 rotatably supported by a double-structured pipe member 54 protruding upward from the center of the cleaning tank 51, and a basket 56 for setting the object to be cleaned are provided, and the object to be cleaned is set The car 56 is installed in the cleaning tank 51 above the cleaning nozzle 55.

  The inside of the cleaning nozzle 55 is divided into a first water conveyance path 58 and a second water conveyance path 59 by a partition plate 57. The inner hollow portion 60 of the pipe member 54 is in communication with the first washing water flow path 58, and the outer hollow portion 61 is in communication with the second water guiding path 59, and the switching valve 63 that is driven by the solenoid 62. Thus, the cleaning water sprayed from the cleaning pump 53 is switched to the first water conveyance path 58 and the second water conveyance path 59.

  The washing water in the washing tank 51 is sent to the washing nozzle 55 by the washing pump 53, but is divided into the first water conveyance path 58 and the second water conveyance path 59 by the switching valve 63 on the way, either during the washing and rinsing process. One of them is always closed, and the solenoid 62 is driven at regular intervals to move the switching valve 63 to alternately open the inlets 64 and 65 of the first water conveyance path 58 and the second water conveyance path 59. During the cleaning and rinsing process, if the cleaning water is alternately sprayed from the first water guide path 58 and the second water guide path 59 with the reverse spray angle, the cleaning nozzle 55 rotates in both forward and reverse directions. Since the cleaning water is incident on the object to be cleaned from both sides, the entire object to be cleaned can be cleaned and rinsed evenly and efficiently.

A dishwasher is also conceivable in which the washing water pressurized by the washing pump is switched to be supplied to a plurality of washing means (for example, see Patent Document 2).
JP 63-43636 A JP 2003-339607 A

  However, in the conventional dishwasher, not only the switching valve 63 for switching the first water conveyance path 58 and the second water conveyance path 59 but also the washing pump 53 is arranged below the washing nozzle 55, so that the dishwasher The height of the main body becomes high, and the installation in a place where the installation height in a narrow kitchen is limited is deteriorated. Moreover, if the height of the dishwasher main body is lowered in order to ensure the installability, the inside of the washing tank 51 is lowered, and the volume necessary for washing the dishes cannot be secured sufficiently, such as the capacity for storing the objects to be washed becomes small. Had.

  The present invention solves the above-mentioned conventional problems, and switches the water guide path in the rotary cleaning means by the water distribution means so that the cleaning water can be efficiently incident on the object to be cleaned, and the installation space of the cleaning pump is reduced. The purpose is to secure the installation of the dishwasher and the capacity of the washing tank by reducing the height.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tank that accommodates an object to be washed such as tableware, a washing pump that pressurizes washing water in the washing tank, and a plurality of discharge paths. A water distribution means for selectively supplying the cleaning water discharged from the cleaning pump to each of the discharge paths, and a rotary cleaning means having at least two water guide paths that communicate with the discharge paths and feed the cleaning water. And a bearing part that serves as a center of rotation of the rotary cleaning means, and the cleaning pump is spaced apart from the bearing part of the rotary cleaning means by a predetermined distance in the horizontal direction. It is arranged.

  Accordingly, the water washing means can reverse the rotation direction of the rotary washing means to efficiently inject the washing water over the object to be washed, and the height of the installation space of the washing pump can be lowered, and the dishwasher Can be secured and the capacity of the washing tank can be secured.

  The dishwasher of the present invention can improve the washing performance and can secure the installation of the dishwasher and the capacity of the washing tank.

  A first invention is a cleaning tank for storing objects to be cleaned such as tableware, a cleaning pump for pressurizing cleaning water in the cleaning tank, and a cleaning water discharged from the cleaning pump having a plurality of discharge paths. A water distribution means for selectively supplying to each of the discharge paths, a rotary cleaning means having at least two water transfer paths communicating with the discharge paths and for sending cleaning water, and located above the water distribution means, The rotary cleaning means is held and a bearing portion serving as the center of rotation is provided, and the cleaning pump is disposed at a predetermined distance in the horizontal direction from the bearing portion of the rotary cleaning means, whereby the water diversion means The cleaning pump can reverse the rotation direction of the rotary cleaning means and efficiently spray the cleaning water to the object to be cleaned, and has a mechanism such as a motor below the rotary cleaning means and requires a large space But Because it is not location, can lower the height of the main body, to lower the height of the installation space of the washing pump, it is possible to secure the capacity of the installation of the cleaning tank dishwasher.

  In the second invention, in particular, the water diversion means of the first invention has an inflow portion of the cleaning water communicated with the discharge port of the cleaning pump, and an outflow portion communicated with the water conduit of the rotary cleaning means. The inflow portion is located on the side surface of the water distribution means, and the wash water flows from the horizontal lateral direction into the water distribution means with respect to the installation surface of the main body. The height of the lower space of the water distribution means can be reduced, and the height of the main body can be further reduced while ensuring the capacity of the cleaning tank.

  According to a third aspect of the invention, in particular, the cleaning pump of the first or second aspect of the invention is connected to a drainage portion provided at the bottom of the cleaning tank via a water supply path extending horizontally along the bottom surface in the main body, By disposing the discharge port of the cleaning pump above the inflow portion of the water distribution means, the position of the cleaning pump can be set high, so the height of the space required below the water distribution means is increased. It can be made even lower.

  In the fourth aspect of the invention, in particular, the water splitting means of any one of the first to third aspects of the invention has a valve body that switches a plurality of outflow portions, and the valve body is operated by stopping and operating the cleaning pump. It is configured to rotate while operating in the vertical direction to switch the outflow part that supplies the cleaning water, and the flow of the cleaning water in the upward direction is used to switch the valve body. Since the outflow part and the discharge path of the water splitting unit are below the rotary cleaning unit, the flow direction of the cleaning water does not change, the pressure loss can be reduced, and the cleaning water can be sent. Accordingly, the cleaning efficiency is improved.

  In the fifth aspect of the invention, in particular, the outflow part of the water splitting means of any one of the first to fourth aspects is formed symmetrically with respect to the cross-sectional shape of the flow path, so that the cleaning sent to the rotary cleaning means The washing water can be stably supplied to the rotary washing means without the water being biased with respect to the flow path. Therefore, the rotation of the rotary cleaning means is not inclined due to the pressure of the cleaning water, so that the pressure loss of the cleaning water does not increase, and it is not necessary to increase the weight of the rotary cleaning means in order to suppress the inclination.

  According to a sixth aspect of the invention, in particular, the water diversion means of any one of the first to fifth aspects of the present invention changes the rotation direction of the rotary cleaning means by switching the supply of cleaning water to the water guide path of the rotary cleaning means. By switching, not only the injection position but also the injection angle of the cleaning water injected to the object to be cleaned can be switched between forward rotation and reverse rotation, and the cleaning can be performed efficiently.

  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)
FIG. 1 is a cross-sectional view of an essential part of a dishwasher according to a first embodiment of the present invention, FIG. 2 (a) is a cross-sectional view of a water diversion unit of the dishwasher, and FIG. It is a top view of a discharge path. As shown in the figure, the main body 1 of the dishwasher is provided with a washing tub 2 that can be opened and closed by a lid (not shown), and objects to be washed such as tableware are set in a tableware basket 3 and are placed in the washing tub 2. Contained. The cleaning pump 4 is driven by a motor 4a disposed on the cleaning tank 2 side, pressurizes the cleaning water supplied to the cleaning tank 2 from a water supply valve (not shown), and injects it onto the object to be cleaned. The water diversion means 5 has a plurality of discharge paths 6 and a valve body 7 driven by an electric motor such as a solenoid or a stepping motor. The valve body 7 is operated to switch the discharge path 6 so that the cleaning pump 4 The discharged cleaning water is selectively supplied to each discharge path 6.

  The rotary cleaning means 8 is provided with a partition in the interior thereof and has at least two water conduits 9 through which cleaning water is flowed, and each of the water conduits 9 has a jet 10 for injecting the cleaning water onto the object to be cleaned. Provided. At least one of the jet outlets 10 in each of the water guide paths 9 has a different position, angle, shape, and the like. The discharge path 6 of the water distribution means 5 communicates with the water guide path 9 of the rotary cleaning means 8. Further, a branch path may be provided in the discharge path 6 and connected to a separately provided cleaning means.

  The bearing unit 11 is provided above the water distribution unit 5 and holds the rotary cleaning unit 8. The rotary cleaning unit 8 rotates around the bearing unit 11. In FIG. 1, the bearing portion 11 is attached to the cleaning tank 2 via packing or the like, but may be formed integrally with the cleaning tank 2. The cleaning pump 4 is spaced apart from the shaft center of the bearing portion 11 of the rotary cleaning means 8 in the horizontal direction with respect to the installation surface of the main body 1 and is arranged at a certain distance.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. An object to be cleaned 12 such as tableware is set in the tableware basket 3 and stored in the cleaning tank 2, and after the detergent is put in, the opening of the main body 1 is closed with a lid, and the operation is started. The cleaning process for removing the dirt of the article to be cleaned 12, the rinsing process for pouring the attached detergent and leftovers, and the drying process for drying the water adhering to the article to be cleaned 12 are performed in this order.

  First, in the cleaning process, the control means 13 operates the water supply valve to supply a predetermined amount of cleaning water to the cleaning tank 2. At this time, the heater (heating means) 14 provided in the cleaning tank 2 is energized and the cleaning water is heated. Next, the cleaning water is pressurized by the cleaning pump 4 and supplied to the water distribution means 5. The valve body 7 in the water distribution means 5 is opened by the control means 13 for a predetermined time, and only the discharge path 6 for feeding the cleaning water is opened in the plurality of discharge paths, and the remaining discharge paths are closed. The washing water fed to the opened discharge path 6 flows into the water guide path 9 of the rotary cleaning means 8 communicating with the discharge path 6, and the wash water is supplied from the jet outlet 10 provided in the water guide path 9. The cleaning object 12 is ejected.

  When the valve body 7 is switched and the cleaning water is sent to another discharge path 6, the cleaning water is jetted from the jet outlet 10 through another water guide path 9 of the rotary cleaning means 8, and the rotary cleaning means 8 is reversed. Rotating jets having different jetting positions, jetting angles, etc. are jetted onto the object to be cleaned 12. The cleaning water passes through a residual filter 15 provided at the bottom of the cleaning tank 2, passes through a water supply path 16 a extending horizontally from the drainage portion 16 along the bottom surface in the main body 1, and then passes through the cleaning pump 4. It is injected from the rotary cleaning means 8 into the cleaning tank 2 and circulates.

  When the cleaning process for a predetermined time is completed, the cleaning water containing dirt is discharged out of the main body 1 by a drain pump (not shown) or the like, and the cleaning water is newly supplied from the water supply valve. The washing pump 4 is operated, and the washing water 12 is sprayed again from the rotary washing means 8 through the water distribution means 5 to rinse the article 12 to be washed, such as detergent and leftovers. After the operation for a predetermined time, the operation of discharging the cleaning water and supplying the cleaning water again is repeated, and this rinsing process is continuously performed about 2 to 4 times. Finally, the washing water is discharged outside the apparatus, and the rinsing process is completed. After completion of the rinsing process, the drying process is performed for a predetermined time, and the operation is terminated.

  As described above, in the present embodiment, even if the water distribution means 5 is installed, the cleaning pump 4 is placed in a horizontal direction with respect to the installation surface of the main body 1 from the shaft center of the bearing portion 11 of the rotary cleaning means 8. By separating and disposing at a fixed distance, the height of the main body 1 is not increased by the cleaning pump 4 having a motor or the like below the rotary cleaning means 8 and taking a large space. Accordingly, the cleaning water can be jetted from a plurality of directions to the arbitrary object to be cleaned 12 by the rotary cleaning means 8 having the plurality of jet nozzles 10. Contaminants adhering to the object to be cleaned 12 can be cleaned in a short time, realizing high-efficiency cleaning, and preventing the installation of the main body 1 and the setability of the object to be cleaned such as tableware.

(Embodiment 2)
As shown in FIG. 3, the water diversion means 5 is an outflow communicating with the water introduction path 9 of the rotary cleaning means 8 via the discharge path 6 and the inflow portion 18 of the cleaning water communicating with the discharge port 17 of the cleaning pump 4. It has a part 19. The cleaning channel 20 communicates the discharge port 17 of the cleaning pump 4 and the inflow portion 18 of the water diversion means 5. The inflow portion 18 is located on the side surface of the water distribution means 5 and is configured such that the cleaning water flows from the horizontal direction of the water distribution means 5 with respect to the installation surface of the main body 1. Further, the inflow portion 18 is located below the valve body 7 with respect to the direction perpendicular to the installation surface of the main body 1.

  As described above, in the present embodiment, the cleaning water flow path 20 for the cleaning water discharged from the discharge port 17 of the cleaning pump 4 is configured by flowing the cleaning water from the horizontal direction of the water dividing means 5. Can be provided in a horizontal direction with respect to the installation surface of the main body 1. Further, since the cleaning flow path 20 is installed in the horizontal direction, the turbidity of the cleaning water is lowered and the cleaning performance is improved with a configuration in which the remaining water hardly remains even when the cleaning water is drained. Therefore, the installation property of the main body 1 and the setting property of the article to be cleaned 12 can be ensured without the height of the main body 1 increasing in the vertical direction.

  Further, as shown in FIG. 4, the discharge port 17 of the cleaning pump 4 is positioned above the inflow portion 18 of the water dividing means 5, so that the cleaning pump 4 is compactly positioned below the cleaning tank 2. Can be built in. The above-described configuration is realized by inclining the cleaning channel 20 so that the cleaning pump 4 side becomes higher, and the position of the water supply channel 16a can be raised so as to approach the cleaning tank 2. That is, the cleaning pump 4 having a motor, a casing having a flow path of cleaning water inside, a runner that pumps cleaning water, a shaft that transmits the driving force of the motor to the runner, etc. The installation property of the main body 1 and the setting property of the object to be cleaned 12 can be ensured without increasing in the vertical direction.

(Embodiment 3)
5 to 8 are detailed views of the water distribution means 5. FIG. 5 is a plan view showing the opening 21 of the valve body 7. As shown in FIG. 6, a casing 22 having an inflow portion 18 of the water dividing means 5 into which the wash water pressurized by the cleaning pump 4 flows, and a plurality of outflow portions 19 respectively communicating with the plurality of discharge paths 6, The opening 21 is provided so as to face at least one of the outflow portions 19, and the valve body 7 operates in the casing 22 so that the outflow portion 19 facing the opening 21 is switched.

  The operation and action will be described below. When the cleaning pump 4 is operated, the cleaning water flows into the casing 22 from the inflow portion 18 of the water dividing means 5. The valve body 7 penetrates in the center, and pushes the valve body 7 upward on the outflow portion 19 side by the pressure of the washing water along the support portion 23 that guides the advancement and retreat of the valve body 7. At that time, the valve body 7 rises in accordance with the inclination of the upper engagement portion 24 by an operation accompanied by rotation and substantially linear movement, and the predetermined outlet portion 19 and the opening portion 21 of the valve body 7 are opened. The outflow portion 19 is fixed at the position where it coincides (FIG. 7). The other outflow portion 19 is closed by the valve body 7.

  Subsequently, when the washing pump 4 is temporarily stopped, the water pressure that pushes up the valve body 7 from below does not act, so the valve body 7 descends by its own weight along the support portion 23. It descends while rotating according to the inclination of the engaging portion 25 and stops at a predetermined position. When the washing pump 4 is operated again, it is engaged with the inclination of the upper engaging portion 24, the valve body 7 rises while rotating, and the opening 21 of the valve body 7 and the next next outflow portion 19 communicate with each other. By doing so, the discharge path 6 can be switched.

  The upper engaging portion 24 and the lower engaging portion 25 are not limited to a shape such as a spiral shape or a triangular shape. When the cleaning pump 4 is operated intermittently, a predetermined value is set during the operation of the cleaning pump 4. The outflow part 19 and the opening part 21 of the valve body 7 should just correspond. Further, the position of the engaging portion such as the outer peripheral portion of the valve body 7 is not limited.

  As described above, the position of the valve body 7 can be switched by operating and stopping the cleaning pump 4 without providing a dedicated electric drive unit. However, since the outflow portion 19 and the discharge path 6 of the water distribution means 5 are below the rotary cleaning means 8, the flow direction of the cleaning water does not change, reducing the pressure loss and supplying the cleaning water. Can send. Accordingly, the cleaning efficiency is improved.

(Embodiment 4)
FIG. 9 is a detailed view of the outflow part of the water dividing means. The inner outflow portion 26 and the outer outflow portion 27 of the water dividing means 5 are formed symmetrically with respect to the cross-sectional shape of the flow path. As shown in FIG. 10, the water conveyance path 9 of the rotary cleaning means 8 is formed in a double cylindrical shape at a portion communicating with the discharge path 6 of the water diversion means 5. The valve body 28 is formed symmetrically so as to open and close the inner outflow portion 26 and the outer outflow portion 27 of the water dividing means 5.

  The operation and action will be described below. The valve body 28 alternately communicates the inner outlet portion 26 and the outer outlet portion 27 of the water splitting means 5, which communicate with the inner passage 29 and the outer passage 30 of the water guide passage 9 of the rotary cleaning means 8 formed in a double cylindrical shape. Switch. At least one of the inner path 29 and the outer path 30 is formed with a different position, angle, shape, and opening area of the injection port. When the path is switched by the valve body 28, at least one injection port is The object to be cleaned can be washed with water flows having different injection positions, angles, and the like. Further, since the inner outflow portion 26 and the outer outflow portion 27 are symmetrical, the cleaning water sent to the rotary cleaning means 8 can be stably supplied to the rotary cleaning means 8 without being biased with respect to the flow path. .

  Accordingly, the cleaning water can be sprayed from various positions and angles to the object to be cleaned, and the rotary cleaning means 8 does not tilt due to the pressure of the cleaning water and rotates stably, so that the pressure loss of the cleaning water is reduced. It can be cleaned efficiently without increasing. Furthermore, since it is not necessary to increase the weight of the rotating cleaning means 8 in order to stably rotate the rotating cleaning means 8 and suppress tilting, the durability and cost of the rotating cleaning means 8 are improved. .

(Embodiment 5)
As shown in FIG. 11, when there are two water conveyance paths of the rotary cleaning means 8, the first water conveyance path 33 and the second water conveyance path 34 are partitioned in the rotary cleaning means 8, and the first water conveyance path 33 or The second water guide path 34 is provided with at least one jet outlet having an injection angle in a direction opposite to the propulsion direction so that the rotary cleaning means 8 rotates clockwise. Further, one of the first water conveyance path 33 or the second water conveyance path 34 is provided with an outlet so that the rotary cleaning means 8 rotates counterclockwise.

  The operation and action will be described below. The washing water ejected by the washing pump 4 is sent by the water diverting means 5 to the discharge path communicating with the first water guide path 33. When the cleaning water is jetted from the jet outlet 35 of the first water guide path 33, the rotary cleaning means 8 rotates to the right or left by the jet reaction force, and the cleaning water hits the cleaning target 12 mainly from one side. . Next, when cleaning water is jetted from the discharge port 36 of the second water guide path 34 from another discharge path by the water distribution means 5, the rotary cleaning means 8 is reversed by the jet reaction force, and the object to be cleaned 12, the cleaning water mainly hits from the opposite direction when the cleaning water is injected from the injection port 35 via the first water guide path 33.

  In addition, since the cleaning water hits the object to be cleaned 12 from various directions, the cleaning efficiency can be improved without using the same positions and shapes of the jet nozzles 35 and 36 symmetrically.

  The diversion means 5 switches the rotation direction of the rotary cleaning means 8 by switching the supply of cleaning water to the water guide path 9 of the rotary cleaning means 8. Further, the angle of the cleaning water sprayed to the object to be cleaned 12 can be switched as well as the injection position, and the cleaning water can be sprayed from various directions to the object to be cleaned 12. Therefore, the installation property of the main body 1 of the dishwasher and the setting property of the object to be cleaned 12 are ensured, and the cleaning efficiency is also improved.

  As described above, the dishwasher according to the present invention is useful as a dishwasher because the cleaning performance is improved and the installation property and the capacity of the washing tank can be secured.

Sectional drawing of the principal part of the dishwasher of Embodiment 1 of this invention (A) Main part sectional drawing of the water diversion means of the dishwasher (b) Plan view of the discharge path of the water diversion means Sectional drawing of the principal part of the dishwasher of Embodiment 2 of this invention Cross-sectional view of the main part of another example of the dishwasher The top view of the valve body of the water diversion means of the dishwasher of Embodiment 3 of this invention Sectional view of water diversion means of the dishwasher Plan view of water diversion means of the dishwasher Operation explanatory diagram of water diversion means of the dishwasher (A) Plan view of the water diversion means of the dishwasher according to the fourth embodiment of the present invention (b) Plan view of the valve body (A) Plan view showing the rotary cleaning means of the dishwasher in section (b) Side view showing the section The top view which showed the rotary washing | cleaning means of the dishwasher of Embodiment 5 of this invention in the cross section Cross-sectional view of the main parts of a conventional dishwasher

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Washing tank 4 Washing pump 5 Water diversion means 6 Discharge path 7 Valve body 8 Rotation washing means 9 Water conveyance path 11 Bearing part 18 Inflow part 19 Outflow part 29 Inner path 30 Outer path

Claims (6)

A cleaning tank for storing objects to be cleaned such as tableware, a cleaning pump for pressurizing cleaning water in the cleaning tank, and a plurality of discharge paths, and the cleaning water discharged from the cleaning pump to each discharge path A water splitting means for selectively supplying, a rotary cleaning means having at least two water conduits communicating with the discharge path and for flowing cleaning water, and a rotary cleaning means positioned above the water splitting means and holding the rotary cleaning means In addition, the washing pump is provided with a bearing portion serving as a rotation center thereof, and the washing pump is disposed at a predetermined distance in the horizontal direction from the bearing portion of the rotary washing means. The water diversion means has an inflow portion that is in communication with the discharge port of the cleaning pump and an outflow portion that is in communication with the water guide path of the rotary cleaning means, and is disposed below the discharge path. The dishwasher according to claim 1, wherein the dishwasher is located on a side surface of the water distribution means, and the washing water flows into the water distribution means from a horizontal lateral direction with respect to the installation surface of the main body. The cleaning pump is connected to a drainage section provided at the bottom of the cleaning tank through a water supply channel extending horizontally along the bottom surface in the main body, and the discharge port of the cleaning pump is located above the inflow section of the water dividing means. The dishwasher according to claim 1 or 2, wherein said dishwasher is positioned. The water diversion means has a valve body that switches a plurality of outflow portions, and the valve body rotates while operating in a vertical direction by operating and stopping the cleaning pump to switch the outflow portion that supplies the cleaning water. The dishwasher according to any one of claims 1 to 3. The outflow part of a water diversion means is a dishwasher of any one of Claims 1-4 formed symmetrically with respect to the cross-sectional shape of a flow path. The dishwasher according to any one of claims 1 to 5, wherein the diversion unit switches the rotation direction of the rotary cleaning unit by switching the supply of the cleaning water to the water guide path of the rotary cleaning unit.

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