JP2004065356A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently wash dishes by effectively rinsing them without increasing an amount of water to use. <P>SOLUTION: The dishwasher is provided with a water dividing means 37 for switching washing means 27 supplied with washing water and washing means 27c having jet ports for jetting washing water to set dishes 23 (B) from an upper side at least in the neighborhood of a position to which mainly the dishes 23 (B) are set in a dish basket 24. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dishwasher and a dishwasher capable of switching washing means for supplying washing water.
[0002]
[Prior art]
Conventionally, a general dishwasher has been configured as shown in FIG. Hereinafter, the configuration will be described. As shown in the figure, the dishwasher main body 1 has a washing tank 2 provided therein, and water or hot water is supplied into the washing tank 2 by a water supply valve 3. A drain hole 4 is provided at the bottom of the washing tank 2, and a washing pump 5, which communicates with the drain hole 4 and is driven by a motor, is attached, and the washing pump 5 circulates washing water inside the washing tank 2. are doing. The drain hole 4 is provided with a residue filter 6 for collecting the residue.
[0003]
That is, in this circulation, the washing water passes through the residue filter 6, is sucked into the washing pump 5, and is supplied from the washing pump 5 to washing means (washing nozzle) 7 provided at the inner bottom of the washing tank 2. It is sprayed from the nozzle 7, and after washing the dishes, the process returns to the drain hole 4 again. At this time, the remnants and the like dropped off from the tableware flow into the remnant filter 6 together with the washing water, and remnants having a size that cannot pass through the remnant filter are collected by the remnant filter 6.
[0004]
Further, a heater 8 for heating the washing water is provided between the washing nozzle 7 and the bottom of the washing tank 2, and the tableware 9 can be arranged in an orderly manner above the washing nozzle 7, so that the washing water can be effectively dispensed. The tableware basket 10 configured to inject into the table 9 is installed for efficient cleaning. The drain pump 11 discharges washing water to the outside through a drain hose 12.
[0005]
[Problems to be solved by the invention]
However, in the conventional dishwasher, the washing water is only sprayed from below, and there is a problem that all the dishes 9 set in the dish basket 10 cannot be efficiently washed, and the washing time becomes longer. .
[0006]
For this reason, as shown in JP-A-5-305050, it is conceivable to inject washing water from multiple directions using a plurality of washing nozzles. Of course, the amount of water to be stored in the washing tank must also be increased. In other words, the increase in the water supply lengthens the temperature rise time of the washing water, resulting in an increase in operation time, an increase in power consumption, an increase in the amount of water used, and a large washing pump required. In addition, various problems occur, such as an increase in cost and an increase in noise and vibration caused by spraying a large amount of cleaning water at one time. If the amount of water is not increased, the injection pressure and the flow rate from one cleaning unit become small, and cleaning cannot be performed.
[0007]
For this reason, as described in Japanese Patent Application Laid-Open No. 2001-321316, there is a method of performing washing from multiple directions while sequentially injecting washing water by using switching means for selectively switching washing means for supplying washing water. Yes, it can be done efficiently without increasing water supply.
[0008]
However, the setting position of basic tableware is set in the tableware basket, and the type of dirt and the manner of adhesion differ for each tableware, so simply spraying from multiple directions does not increase the cleaning efficiency and leaves unwashed. There are problems such as the occurrence of problems and an increase in cleaning time in order to ensure cleaning performance.
[0009]
The present invention has been made to solve the above-mentioned conventional problems, and has as its object to perform cleaning with higher efficiency while sequentially injecting cleaning water from multiple directions.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plurality of washing means for injecting washing water into a washing tank, a water separation means for switching washing means to which washing water is supplied from a washing pump, and Control means for controlling the supply of the washing water, wherein the water dividing means sequentially injects the washing water from the plurality of washing means, and at least one of the washing means is a washing target set in the dish basket. It has a configuration having a fixed injection port for injecting cleaning water from above at predetermined intervals.
[0011]
Thereby, highly efficient cleaning with high cleaning performance and rinsing performance can be performed.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention provides a tableware basket for setting an object to be cleaned, a cleaning tank containing the tableware basket, a cleaning pump for pressurizing the cleaning water, and spraying the cleaning water into the cleaning tank. A plurality of washing means having an injection port for performing washing, a water separation means for switching a washing means to which washing water is supplied from the washing pump, and a control means for controlling supply of washing water to the washing means, The water unit sequentially injects the washing water from the plurality of washing units, and at least one of the washing units injects the washing water from above at predetermined intervals toward the object to be washed set in the dish basket. It is configured to have a fixed injection port, using a water separation means, and by injecting washing water from above at predetermined intervals toward the object to be washed, without increasing the amount of water used, washing Performance and rinsing High capacity, it is possible to perform efficient cleaning.
[0013]
According to a second aspect of the present invention, in the first aspect of the present invention, the washing means is configured to spray washing water from above toward at least one of the dishes set in the tableware basket. Yes, the dishes have a large surface area, it is difficult to spray the washing water uniformly on the whole surface, and it is possible to achieve uniformity by spraying from multiple directions, but simply spraying from multiple directions washed once There is a problem that the residue reattaches and cannot be easily washed away. In order to wash (re-rinse) the re-adhered substance, it is effective to flush a large amount of washing water from above. However, even if a large number of washing means are provided and some of them are installed above the dishes, all of the washing means are disposed. If the jetting is performed simultaneously from the cleaning means, the jetting amount is reduced, the rinsing is insufficient, and the cleaning power is reduced unless the circulating water amount is increased.
[0014]
In other words, only by using the water dividing means and providing the washing means above the dishes, a larger amount of washing water is sprayed toward the dishes and washed down from above without increasing the amount of water used. Effective rinsing can be performed, and re-adhesion can be eliminated.
[0015]
Needless to say, this spraying contributes to the cleaning, and both the performances of the cleaning and the rinsing can be improved, and the cleaning can be performed with high efficiency. Further, since the cleaning performance is improved, if only the same performance as the conventional one is ensured, the amount of water supply at one time can be reduced, and the water saving and energy saving can be realized.
[0016]
According to a third aspect of the present invention, in the first aspect of the present invention, the washing means injects washing water from below toward the inside of a cup having at least one set in a tableware basket. Cups and cups have a shape whose depth is larger than the entrance dimension, and when cleaning the inside, the high injection pressure that reaches to the back and the flow rate that allows the cleaning water to spread over the entire inner wall Injection with both is required. Washing means for directly injecting washing water toward the inside of the cups is provided near the position where the cups are set, and high pressure, high flow rate injection is obtained by the water dividing means, so that the amount of water supplied at one time can be reduced. The cleaning performance can be improved without increasing.
[0017]
According to a fourth aspect of the present invention, in the first aspect of the present invention, at least one of the cleaning means is configured to directly spray cleaning water toward a top surface of the cleaning tank, and It is designed to wash the thread bottom of cups set in a tableware basket with washing water sprayed toward the cup, and since the cup is basically laid down, there is no small residue on the thread bottom. They tend to accumulate and need to be sprayed from above the teacup to wash them away.
[0018]
However, the outside of cups and cups is hardly contaminated, and it is inefficient to provide a washing means only for washing the thread bottom, which may reduce the overall washing performance. For this reason, by directly spraying toward the top surface of the washing tank, the residue of the thread bottom can be washed off by the fall of the washing water from the top surface, and the rinsing performance is improved. At this time, since the water is directly sprayed toward the top surface, the washing water can be reliably sprayed onto the top surface without being blocked by other objects to be cleaned. In addition, if a convex part is formed on the top surface above the position where the cups are arranged, the washing water will fall intensively on the thread bottom, and the rinsing performance of the thread bottom can be further improved.
[0019]
According to a fifth aspect of the present invention, in the first aspect of the present invention, a small basket for storing small items such as chopsticks is provided in the tableware basket, and the washing means is provided with at least one chopstick in the small basket. Cleaning water is sprayed from above toward small items such as chopsticks and spoons, and they are designed to lean against a small basket, and the direction and inclination of the tip are random. It is necessary to inject at a higher pressure than the direction.
[0020]
Further, small parts are likely to be re-adhered, for example, to a portion where the small articles overlap each other, but can be washed away by spraying a large amount of washing water from above. By providing a washing means for spraying from above small items and obtaining high-pressure, high-flow-rate spray by the water separation means, the washing and rinsing performance can be improved without increasing the amount of water supply at one time.
[0021]
According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the planar shape of the cleaning tank is formed to be substantially rectangular, and a plurality of cleaning means are provided below the tableware basket. In the injection from the washing means, in a rectangular washing tank where it is difficult to inject the washing water into the entire dish basket, the washing water is branched by the water dividing means and injected from multiple directions, without increasing the amount of water. , Cleaning and rinsing performance can be improved.
[0022]
The invention according to claim 7 is the invention according to claim 6, wherein a plurality of cleaning means provided below the tableware basket are configured to spray cleaning water at the same time, and in a rectangular cleaning tank, This is a configuration in which a plurality of rotating nozzles simultaneously spray from below the tableware basket, and can be washed more completely and faster with the same amount of water as before.
[0023]
The invention according to claim 8 is the invention according to claims 1 to 5, wherein the planar shape of the washing tank is formed to be substantially rectangular, and the washing means is located above the lower surface of the dish basket, and It is provided on both sides in the longitudinal direction of the washing tank, and in a substantially rectangular washing tank, sufficient washing and rinsing performance can be secured by injecting washing water from above into almost the entire area of the tableware basket. In addition, the number of cleaning means can be minimized. In addition, by reducing the number of cleaning means, it is possible to increase the cleaning power of other parts, such as prolonging the injection time from below the tableware basket, and improve the cleaning performance of the entire cleaning tank.
[0024]
According to a ninth aspect of the present invention, in the first to fifth aspects of the present invention, a planar shape of the cleaning tank is formed to be substantially rectangular, and the cleaning tank is ejected from cleaning means located on one side of a half in a longitudinal direction of the cleaning tank. In the rectangular cleaning tank where it is difficult to spread the cleaning water over the entirety, the cleaning object is located on the other half of the cleaning object. On the other hand, since the jet is sprayed from more directions, it can be more efficiently cleaned.
[0025]
According to a tenth aspect of the present invention, in the invention of the first to fifth aspects, a plurality of tableware baskets are vertically arranged, and a washing means is provided between the plurality of tableware baskets. Since the number of dishes that can be accommodated in the basket increases, the washing load increases, and the washing becomes more difficult. However, sufficient washing can be performed by installing the water separating means and the washing means suitable for the tableware arrangement.
[0026]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0027]
(Example 1)
As shown in FIGS. 1 and 2, a dishwasher main body 20 is provided with a washing tank 22 that can be opened and closed by a door 21, and an object to be washed 23 such as tableware is set in a dish basket 24 and stored in the washing tank 22. are doing. A water supply valve (not shown) supplies cleaning water to the cleaning tank 22, and a cleaning pump 26 pressurizes the cleaning water and supplies it to cleaning means (cleaning nozzle) 27 provided with a plurality of injection ports. Cleaning water is injected from the cleaning means 27.
[0028]
The cleaning means 27 are installed at four locations: cleaning means 27a and 27b which spray from below the dish basket 24 and cleaning means 27c and 27d which spray from the back (side) side of the washing tank 22. Reference numeral 27b denotes a rotary nozzle which rotates around an axis by a jet, and cleaning means 27c and 27d are stationary nozzles which do not move. Each cleaning means 27 has about 4 to 10 orifices for injecting cleaning water. ing.
[0029]
In addition, the bottom of the cleaning tank 22 has a drain port 28 communicating with the suction side of the cleaning pump 26. The drain port 28 has a residue filter 29 for collecting residue and a heating element for heating the cleaning water. 30 is provided, and a temperature sensor 31 for detecting the temperature of the cleaning tank 22 is provided. The drain pump 32 is for discharging the cleaning water in the cleaning tank 22. The blower (not shown) sends air to the washing tank 22 through a blowing path (not shown), and discharges the exhaust air from an exhaust port 35.
[0030]
In the discharge path 36 of the cleaning pump 26, there is provided a water diversion means 37 for selectively switching the cleaning means 27 for supplying the cleaning water. The water diversion means 37 has an inflow portion 38 into which the cleaning water flows. And four outflow portions 39 respectively connected to the four cleaning means 27a, 27b, 27c, 27d, and the four outflow portions 39 are respectively connected to the cleaning means 27a, 27b, 27c, 27d by the cleaning path 43. Have been. Note that one cleaning unit refers to an aggregate of spray ports from which the cleaning water that has passed through one cleaning path 43 is sprayed.
[0031]
The water dividing means 37 is configured as shown in FIG. 3 and includes a casing 40 having an inflow portion 38 and an outflow portion 39, and a valve body 41 movably provided in the casing 40. Is provided with an opening 42 through which washing water passes. In order to switch the outflow portion 39 communicating with the opening portion 42, a drive motor (electric drive source) 54 for rotating the valve body 41 is provided, and the motor shaft 55 of the drive motor 54 has a gap. At the valve body 41.
[0032]
In the above configuration, first, a basic operation of the dishwasher will be described. An object to be washed 23 such as tableware is set in a tableware basket 24, stored in a washing tank 22, and after the detergent is charged, the opening of the dishwasher main body 20 is closed by the door 21, and the operation is started. The cleaning step for removing dirt from the object 23 to be cleaned, the rinsing step for flowing the attached detergent and garbage, and the drying step for drying water adhering to the object 23 are executed in this order.
[0033]
First, a water supply valve is operated to supply a predetermined amount of cleaning water to the cleaning tank 22. Subsequently, the cleaning water is pressurized by the cleaning pump 26, and the cleaning means 27 injects the cleaning water. At this time, the heating element 30 such as a sheath heater provided in the cleaning tank 22 is energized, and the cleaning process is performed while heating the cleaning water. Further, the temperature sensor 31 detects the temperature of the cleaning tank 22, and when the temperature reaches a predetermined temperature or more, the power supply to the heating element 30 is stopped.
[0034]
The circulation of the washing water passes through the residue filter 29, is sucked into the washing pump 26, and is supplied from the washing pump 26 to the washing means (wash nozzle) 27 provided at the inner bottom of the washing tank 22. After being sprayed and cleaning the object 23 to be cleaned, the cleaning is performed again by returning to the drain port 28. At this time, the remnants and the like that have fallen off from the object to be cleaned 23 flow into the remnant filter 29 together with the washing water, and remnants having a size that cannot pass through the remnant filter 29 are collected by the remnant filter 29. .
[0035]
When the cleaning process for a predetermined time is completed, the cleaning water containing dirt is discharged out of the machine by the drain pump 32, and the cleaning water is newly supplied. The cleaning pump 26 is operated, and the cleaning water is again injected from the cleaning means 27 to rinse the object 23 to be cleaned to which the detergent, residual vegetables, and the like have adhered. 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 step is continuously performed about three times. Finally, the washing water is discharged outside the machine, and the rinsing step is completed.
[0036]
Subsequently, a drying step is performed, and by operating the blower, outside air is blown into the cleaning tank 22 through the blower path and discharged from the exhaust port 35. At this time, the heating element 30 is energized, and the evaporation of water droplets attached to the object 23 is promoted by the effects of both air blowing and temperature. These drying steps are performed for a predetermined time, and the operation is terminated. Including the control of the supply of the cleaning water to the cleaning tank 22, the driving of the cleaning pump 26, and the heating element 30 for heating the cleaning water in the cleaning tank 22 to a predetermined temperature based on the output of the temperature sensor 31. , The driving of the drain pump 32, the driving of the blower in the drying process, and the like are controlled by control means (not shown) provided in the dishwasher main body 20.
[0037]
Next, the operation and operation of the water separating means 37 and the cleaning means 27 which are characteristic structures of the present embodiment will be described. The water dividing means 37 has a configuration in which the outflow portion 39 from which the washing water flowing into the casing 40 flows out from the inflow portion 38 is branched by rotating the valve body 41. By rotating, the outflow section 39 for supplying the cleaning water is sequentially switched, and the cleaning means 27 for spraying the cleaning water can be sequentially switched at predetermined intervals in the order of 27a, 27b, 27c, and 27d.
[0038]
At this time, the drive motor 54 may be driven continuously or may be driven intermittently so that the opening 42 stops at the outlet 39. In the former case, a sensor or the like for detecting the position of the valve element 41 is unnecessary, and the configuration is simple. In the latter case, a position sensor or the like is required, but there is an advantage that the switching efficiency is good and the position and the injection time of the cleaning means 27 can be selectively set according to the situation. It does not do.
[0039]
In addition, if the time for jetting from one cleaning means 27 is switched from several seconds to several minutes, efficient cleaning can be performed, but at least one cleaning means can be performed at least once during one cleaning or rinsing step. It is desirable to set so as to be injected from 27. Therefore, the time may be set from about 10 seconds to about 1 minute. The switching of the washing means 27 is also controlled by the control means.
[0040]
A plurality of cleaning means 27 for sequentially injecting cleaning water at predetermined intervals using the water dividing means 37 are provided at positions corresponding to the arrangement of the cleaning target 23, and are suitable for each cleaning target 23. Cleaning water is sprayed in different directions, spray pressures and flow rates to enhance the cleaning effect. In the tableware basket 24 of the present embodiment, the lower half of the lower half mainly contains bowls 23 (A), the right half contains dishes 23 (B), and the small parts 23 (C) such as chopsticks near the center. A cup and a cup 23 (D) are set on the upper stage provided above the bowls.
[0041]
In FIG. 1, a washing means 27c having an injection port above the dishes 23 (B) mainly set on the right side of the tableware basket 24 is provided on the upper right side of the rear surface near the dishes 23 (B). A washing means 27d for spraying washing water from below the cups 23 (D) set on the upper part of the table is provided at an intermediate height position on the rear right side. In addition, the cleaning means 27d has an injection port for directly injecting the cleaning liquid to the top surface of the cleaning tank 22. In addition, both the cleaning means 27c and 27d are provided with injection ports aimed at the small articles 23 (C).
[0042]
The dishes 23 (B) have a large surface area, and cannot be easily washed away by simply spraying from a plurality of directions if remnants which have been washed off once again adhere to the dishes 23 (B). By providing the washing means 27c above the 23 (B), the washing water can be dispersed and sprayed from above into the dishes 23 (B) without increasing the amount of water used, and the effect of washing down from above is obtained. A proper rinsing can be performed and re-adhesion can be eliminated. Needless to say, this spraying contributes to the cleaning, and the performance of both the cleaning and the rinsing can be improved, and highly efficient cleaning can be performed. In addition, since the cleaning performance is improved, it is possible to reduce the amount of water supply at a time if only the same performance as the conventional one is secured, and it is possible to realize water saving and energy saving.
[0043]
In addition, the cups and cups 23 (D) have a shape whose depth is larger than the entrance dimension, and when washing the inside, the high spray pressure reaching to the back and the washing water can be spread over the entire inner wall. Injection with both flow rates is required. By providing washing means for directly injecting washing water directly toward the inside of the cups near the position where the cups 23 (D) are set, and obtaining high-pressure, large-flow injection by the water dividing means 37, The cleaning performance can be improved without increasing the amount of water supply at one time.
[0044]
Further, since the cup is basically laid face down, the residue tends to accumulate at the thread bottom E, but since the spout is directly provided toward the top surface of the washing tank 22, other Without being interrupted by the object to be cleaned, these residues can be washed off by the fall of the washing water from the top surface, and the rinsing performance is improved. In addition, a convex portion is formed on the top surface above the position where the cups 23 (D) are disposed, so that the washing water drops intensively on the yarn bottom E, and the rinsing performance of the yarn bottom E is improved. Has improved.
[0045]
In addition, the injection port of the cleaning means 27c is also configured to spray from above the small articles 23 (C) such as chopsticks and spoons, and the residue easily adheres to the portion where the small articles overlap each other. However, as in the case of the dishes 23 (B), a large amount of washing water is sprayed from above toward the small articles 23 (C), so that rinsing can be performed efficiently.
[0046]
The expression “from above” toward the object 23 to be cleaned is not limited to “directly from above”, but includes an injection port provided on the wall surface of the cleaning tank 22 and injection from obliquely upward. There is no difference in what you can get. In addition, it is not necessary to inject the whole of the dishes 23 (B) from above, and the effect can be obtained by injecting only a part of the dish 23 (B). The same applies to the expression from below. Therefore, the same effect can be obtained regardless of whether the washing means 27 is provided on the wall surface, provided in the space protruding from the wall surface, or provided in the dish basket 24.
[0047]
Further, from the cleaning means 27d provided on the left side of the back surface, the fuel is also sprayed in the direction of the small articles 23 (C) located on the right side of the cleaning tank 22. Even if it is slight, by injecting it into the space in another direction, the washing water is applied from more directions, so that the washing performance is further improved. Other than this, for example, in the cleaning means 27a and the cleaning means 27c constituted by a rotary nozzle, the effect can be obtained by directing the injection port at the tip to a space in another direction.
[0048]
Further, by using the water separating means 37 and installing the washing means 27 at a position corresponding to the arrangement of the article 23 to be washed, it is possible to efficiently rinse the detergent and the residue attached to the article 23 to be washed. Therefore, the number of times of rinsing can be reduced. For example, rinsing performed in four steps can be reduced to three steps. Since the amount of water supply at one time can be reduced, and the number of times of rinsing can be reduced, the heating time of the cleaning water using the heater 30 can also be reduced.
[0049]
Further, if the output of the cleaning pump 26 is made variable, such as when an inverter motor capable of changing the rotation speed of the cleaning pump 26 is used, the output of the cleaning pump 26 can be changed by the cleaning means 27 to which the cleaning water is supplied. It is possible to perform more efficient cleaning by spraying at a higher pressure or flowing a higher flow rate. For example, when jetting from the washing unit 27a, the output can be increased to increase the jet pressure, and more efficient washing can be performed, such as removing sticking of rice in a short time. At this time, it is necessary to detect which of the cleaning means 27 is ejecting the fuel, and a sensor for detecting the position of the valve element 41 of the water separating means 37 or a sensor for detecting the pressure or flow in the cleaning path 43 is used. Can be determined by using.
[0050]
If the injection time is made different for each cleaning means 27, high cleaning performance can be obtained without increasing the total operation time by increasing the cleaning time in a place where the cleaning load is larger. For example, a large amount of energy is required for cleaning a tea bowl with rice particles stuck thereon, and if the injection time from the cleaning means 27a is lengthened, cleaning can be performed without increasing the overall time.
[0051]
It is also effective to change the switching time between washing and rinsing, and in the final rinsing, lengthen the interval of water separation switching, or lengthen the injection time from above toward the object 23 to be cleaned, Since the re-adhered particles can be washed off, the performance can be improved. For this, the switching time can be controlled by detecting the injection position, or the length can be increased by mechanical means such as changing the area of the outflow portion 39 of the water separation means 37.
[0052]
When the planar shape of the cleaning tank 22 is substantially square, the cleaning water can be sprayed on the entire cleaning tank 22 by providing one rotating nozzle 27 on the bottom surface of the cleaning tank 22. If the rotary nozzle 27 is provided and a total of two rotary nozzles are used, highly efficient cleaning can be realized. However, when the planar shape of the cleaning tank 22 is substantially rectangular as shown in FIG. 4, it is very difficult to spray the cleaning water onto the entire cleaning tank 22 with one cleaning unit 27. Two cleaning means are required below.
[0053]
When the planar shape of the cleaning tank 22 is formed in a substantially rectangular shape, the cleaning tank 22 is positioned on the other left half by cleaning water jetted from one side of the longitudinal direction of the cleaning tank 22, for example, the cleaning unit 27a positioned on the right side. If the object 23 (B) is to be washed, even in the rectangular washing tank 22 in which it is difficult to distribute the washing water, the single object 23 is sprayed from more directions. Therefore, cleaning can be performed more efficiently.
[0054]
Moreover, as the aspect ratio of the rectangle deviates from twice, as shown in FIG. 4, the area (hatched portion) in which only the two rotary nozzles 27 cannot be washed becomes larger, and the washing water can be spread over the entire dish basket 24. Becomes more difficult. For this reason, it is essential to provide three or more cleaning means 27, and more cleaning means 27 are required in order to apply cleaning water from a plurality of directions. In this case, it is natural that a large number of injection ports are required. Therefore, it is necessary to circulate a large amount of the cleaning water when simultaneously injecting the cleaning water. Can be washed, and the effect of the water dividing means 37 can be further exhibited.
[0055]
Although the water dividing means 37 is switched by rotating the valve body 41 by the drive motor 54 as shown in FIG. 3, the same cleaning effect can be obtained by another method. For example, as shown in FIGS. 5 and 6, there is also a method of switching the valve element 41 using the ON / OFF operation of the cleaning pump 26. This is achieved by operating the pump 26 intermittently by using the up and down movement of the valve element 41 due to ON / OFF of the cleaning pump 26 and the fitting of the engaging portions 44 and 45 provided on the casing 40 and the valve element 41. By doing so, the outflow section 39 can be sequentially switched.
[0056]
When the cleaning pump 26 is operated from the state of FIG. 6 in which the cleaning pump 26 is stopped, the valve body 41 rises while rotating along the engaging portion 44, and the valve body 41 stops at a predetermined position, thereby Cleaning water can be supplied only to the cleaning means 27. In this case, the switching can be performed without using the electric driving means, and the low-cost and small-sized water dividing means 37 can be provided. In addition, various other methods are conceivable, such as using an on-off valve or a three-way valve.
[0057]
In this embodiment, a part of the cleaning path 43 provided on the back surface and the cleaning means 27c and 27d are provided separately from the cleaning tank 22 and disposed in the cleaning tank 22, but the cleaning tank 22 is formed of stainless steel. For example, even when it is difficult to form a flow path on the side wall surface, it can be easily attached. In addition, if the components are separate, the components can be transported efficiently because the components can be reduced in size.
[0058]
Further, although the cleaning means 27c and 27d are also configured separately, they can be integrally configured from the rising portion from the tank bottom to the preceding injection port. In this case, the cost can be reduced because the number of parts and the number of assembly steps are reduced. When the cleaning tank 22 is formed of a resin, the cleaning path 43 may be integrally formed on the wall surface of the cleaning tank, and the injection port may be provided directly on the wall surface of the cleaning tank 22. In addition, there is no need to attach the cleaning means 27 to the wall surface of the washing tank 22, and there is no problem as long as the washing means 27 is attached to the tableware basket 24 and sprayed onto the tableware from a predetermined direction.
[0059]
Further, in the present embodiment, the number of the cleaning means 27 is four, but the number may be set according to the arrangement of the cleaning target 23 in the tableware basket 24 and the like. Further, although the rotary type and the fixed type are not limited, the cleaning performance is improved by using the rotary nozzle, but since the space occupied by the cleaning means 27 increases, the outer dimensions of the dishwasher main body 20 are the same. In this case, there is a problem that the volume of a portion for accommodating tableware is reduced. However, since cleaning mainly by two cleanings from below is mainly performed, it is preferable to use a rotating nozzle. Further, as shown in FIG. 7, a rotary nozzle can be used for all the cleaning means 27.
[0060]
In addition, it is also possible to provide an injection port on the door 21 or on the door side and inject it in the rear direction. In this case, the injection of the washing water does not directly hit the seal portion of the door 21, and good sealing performance is obtained. Is obtained.
[0061]
Further, in the dishwasher in the rectangular washing tank 22, by providing the washing means 27 composed of two rotating nozzles below the dish basket 24, it is difficult to jet the washing water to the entire dish basket 24. Also in the washing tank 22, the washing and rinsing performance can be improved without increasing the amount of water by branching and jetting the washing water by the water dividing means 37 from multiple directions.
[0062]
In addition, if the two rotating nozzles provided below the tableware basket are operated as a configuration that simultaneously sprays (one piece of cleaning means), a high-performance dishwasher can be provided in that washing is performed strongly. At the same time, more cleaning means 27 can be provided above, and the effect of rinsing at a higher flow rate than above is further increased.
[0063]
Further, the washing means 27 is located above the lower surface of the dish basket 24 and provided on both sides in the longitudinal direction of the washing tank 22, so that almost the entire area of the dish basket 24 in the substantially rectangular washing tank 22 is provided from above. Since cleaning water can be sprayed and sufficient cleaning and rinsing performance can be secured, the number of cleaning means 27 can be minimized. In addition, by reducing the number of the cleaning means 27, it is possible to increase the cleaning power of other parts, for example, it is possible to lengthen the injection time from below the tableware basket, and it is possible to improve the cleaning performance of the entire cleaning tank 22.
[0064]
In addition, among the plurality of cleaning means 27, only one cleaning means 27 is sprayed. However, by providing two or more openings 42 of the valve element 41, a plurality of cleaning means 27 can be used. It is also possible to inject simultaneously and switch the position. In this case, it is possible to simultaneously spray the cleaning water while using the lower two rotating nozzles as separate cleaning means 27.
[0065]
In addition, if one of the plurality of outflow portions 39 is connected to a discharge path for discharging washing water outside the machine, drainage can be performed without using the drainage pump 32, and the drainage pump 32 is installed. This eliminates the necessity, thereby achieving cost reduction and downsizing of the apparatus. When the cleaning means 27 is sequentially switched during the cleaning operation, the outflow portion 39 always passes through. Therefore, if the cleaning pump 26 is continuously operated, the water is drained during the cleaning. By detecting the part 39 and supplying the cleaning water to the outflow part 39 for drainage very shortly except during drainage, it is possible to prevent drainage outside the machine except during drainage.
[0066]
Further, if an on-off valve (not shown) is provided in the middle of the drainage path, drainage of the washing water to the outside of the machine can be reliably prevented. In addition, the rotation of the valve body 41 of the water separating means 37 can be reversely rotated halfway to prevent branching to the drainage path, and unnecessary drainage can be prevented.
[0067]
Further, the arrangement of the tableware in the tableware basket 24 is an example, and the washing means 27 may be provided corresponding to the setting position. Further, even when the object 23 to be washed is set in a place other than the tableware basket 24, such as when an accessory case for setting accessories is provided inside the door 21, if the cleaning means 27 corresponding to the position is provided. The same effect can be obtained.
[0068]
The present invention relates to a method of spraying in a dishwasher provided with a water dividing means 37, such as the shape and size of the dishwasher main body 20, the opening and closing method of the door 21, the arrangement of dishes, the arrangement of individual parts, and the like. Is not limited. Further, in the embodiment, the example of the dishwasher having the drying function is described, but the same effect can be obtained in the dishwasher not having the drying function.
[0069]
(Example 2)
The valve body 41 of the water dividing means 37 is configured such that the opening 42 is widened (not shown) so as to simultaneously supply wash water to two locations of the outflow portion. The cleaning pump 26 can be operated with the same amount of water as in the case of using two rotating nozzles, which is generally conventional, and the same operation and effect as those of the first embodiment can be obtained. Because of the injection, the cleaning performance is dramatically improved.
[0070]
The water dividing means 37 injects the washing water in the order of the washing means 27a and 27b, the washing means 27b and 27c, the washing means 27c and 27d, and the washing means 27d and 27a. However, if the injection pressure from below is set higher than above, the cleaning power can be maintained by high-pressure injection from below without losing to injection from above.
[0071]
Conversely, if the flow rate injected from above is set higher than that below, it can be washed away at a flow rate higher than that injected from below, so that there is no effect on the effect of washing away reattached substances and the like, and high rinsing performance can be maintained.
[0072]
(Example 3)
As shown in FIG. 9, the washing means is provided with two rotating nozzles below the tableware basket and one fixed nozzle on the back side for washing. The basic configuration is the same as that of the first embodiment, and includes a fixed-type cleaning unit 27e having injection ports on both the left and right sides of the back surface. Since the cleaning means is branched into three places, the time for jetting from one cleaning means 27 becomes 1.3 times.
[0073]
For this reason, the energy injected from below increased, and the washing power of the bowl with a large washing load increased. On the other hand, although the injection amount from above is reduced, in the case of the fixed nozzle, since there is no leakage loss of the shaft portion such as the rotating nozzle, and the injection from above does not require much pressure, the embodiment It is sufficiently possible to flow the same flow rate (total amount) as 1, and the washing water is sprayed from above onto almost the entire area of the dish basket 24 in the substantially rectangular washing tank 22 while keeping the number of washing means 27 to a minimum. As a result, sufficient cleaning performance and rinsing performance can be ensured.
[0074]
The shape of the cleaning means 27e has different heights on the left and right sides, and in particular, the object 23 to be cleaned near the center can be cleaned from directions having different angles and heights, and the cleaning performance can be further improved.
[0075]
The same effect can be obtained even if the cleaning means 27e is provided on the door side or the door. Also, as shown in the figure, when the washing path 43 is set up at the center on the back side of the washing tank 22, it is possible to provide a flow path of a sufficient size for water supply without interfering with the locus of the lower rotating nozzle, Necessary upper and lower water power can be secured.
[0076]
In addition, there is an advantage that the cost can be reduced because the number of the cleaning means 27 is reduced. Also, as shown in FIG. 10, even when only one side of the back surface has an injection port, an effect can be obtained within the injection range, which is effective.
[0077]
(Example 4)
As shown in FIG. 11, the washing means 27 is provided with two rotating nozzles 27a and 27b below the tableware basket 24 and two rotating nozzles 27c and 27d between a plurality of washing baskets provided vertically. , To be washed.
[0078]
The basic configuration is the same as that of the first embodiment. As shown in the figure, the tableware basket 24 is divided into two upper and lower stages, so that a large capacity can be accommodated, and it is possible to cope with various use forms of the user. Has become. In this case, since the height of the apparatus is also high, only the lower two cleaning means 27a and 27b are not enough. It is effective to provide the cleaning means 27c and 27d between the upper and lower baskets. By using the water dividing means 37, it is possible to wash with a small amount of water while providing a large number of injection ports, which is effective.
[0079]
There is also a method in which the four cleaning means 27a, 27b, 27c, and 27d are sequentially jetted at a predetermined interval. May be injected.
[0080]
【The invention's effect】
As described above, according to the present invention, highly efficient cleaning with higher cleaning performance and rinsing performance can be performed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a dishwasher according to a first embodiment of the present invention.
FIG. 2 is a side sectional view of the dishwasher according to the first embodiment.
FIG. 3 is a sectional view of a water dividing means of the dishwasher according to the first embodiment.
FIG. 4 is a schematic plan view of the inside of the washing tank of the dishwasher according to the first embodiment viewed from above.
FIG. 5 is a sectional view of another water separating means of the dishwasher of the first embodiment.
FIG. 6 is a sectional view of another water separating means of the dishwasher of the first embodiment.
FIG. 7 is a view showing an example of the arrangement of another washing means of the dishwasher according to the first embodiment;
FIG. 8 is a partially cutaway front view of the dishwasher according to the second embodiment.
FIG. 9 is a partially cutaway front view of the dishwasher according to the third embodiment.
FIG. 10 is a view showing an example of the arrangement of another washing means of the dishwasher of the third embodiment.
FIG. 11 is a partially cutaway front view of the dishwasher according to the fourth embodiment.
FIG. 12 is a side sectional view of a conventional dishwasher.
[Explanation of symbols]
22 Cleaning tank
23 Items to be cleaned
24 tableware basket
26 Cleaning pump
27 Cleaning means
37 Water distribution means

Claims (10)

A tableware basket for setting an object to be cleaned, a cleaning tank for accommodating the tableware basket, a cleaning pump for pressurizing cleaning water, and a plurality of cleaning means having an injection port for spraying cleaning water into the cleaning tank; A water diversion means for switching a cleaning means to which the cleaning water is supplied from a cleaning pump; and a control means for controlling supply of the cleaning water to the cleaning means, wherein the water diversion means comprises: Dishwasher, wherein at least one of the washing means has a fixed spray port for spraying washing water from above at predetermined intervals toward an object to be washed set in the dish basket. . 2. The dishwasher according to claim 1, wherein the washing means sprays washing water from above toward at least one of the dishes set in the dish basket. 2. The dishwasher according to claim 1, wherein the washing means jets washing water from below toward at least one of the cups set in the dish basket. The washing means is configured to directly inject washing water toward at least one of the tops of the washing tank, and to wash the yarn bottoms of the cups set in the tableware basket with the washing water ejected toward the top. The dishwasher according to claim 1, wherein the dishwasher is washed. 2. A small basket in which small items such as chopsticks are placed in a tableware basket, and the washing means jets washing water from above toward at least one of the chopsticks or the like in the small basket. dishwasher. The dishwasher according to any one of claims 1 to 5, wherein a planar shape of the washing tank is substantially rectangular, and a plurality of washing means are provided below the dish basket. 7. The dishwasher according to claim 6, wherein a plurality of cleaning means provided below the tableware basket are configured to spray cleaning water simultaneously. The planar shape of the washing tank is formed to be substantially rectangular, and the washing means is located above the lower surface of the dish basket and provided on both sides in the longitudinal direction of the washing tank. Dishwasher as described. The planar shape of the cleaning tank is formed to be substantially rectangular, and the object to be cleaned located on the other half is washed by the cleaning water jetted from the cleaning means located on one side of the longitudinal half of the cleaning tank. The dishwasher according to any one of claims 1 to 5. The dishwasher according to any one of claims 1 to 5, wherein a plurality of tableware baskets are vertically arranged, and a washing means is provided between the plurality of tableware baskets.

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