JP2008229224A - dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher in which a fixed nozzle is constituted compactly, and the operation is performed with less amount of washing water. <P>SOLUTION: This dishwasher is equipped with tableware baskets 5a and 5b in which articles to be washed are set, a washing tub 3 which houses the tableware baskets, a heating means 13 which heats the washing water, a pump 7 which pressurizes and circulates the washing water, a water draining port 11 which communicates with the suction side of the pump, and a plurality of washing means 8 and 9 being equipped with a plurality of jetting ports 10 which jet the washing water. The washing means has the fixed nozzle 9 which is arranged on the wall surface of at least one washing tub. The fixed nozzle has a jetting port 10a which jets the washing water to the wall surface of the washing tub. Then, the articles to be washed located above in the approximately vertical direction which are set in the upper basket are washed by making the washing water being jetted from the jetting port 10a reflected on the washing tub. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dishwasher that has a fixed nozzle in a cleaning means and that cleans an object to be cleaned by spraying cleaning water from the fixed nozzle.

  Conventionally, this type of dishwasher has been configured as shown in FIG. 10 (see, for example, Patent Document 1). As shown in FIG. 10, the dishwasher main body 41 accommodates an object to be cleaned 43 in a washing tank 42, and a first rotating nozzle 44 and a second rotating nozzle 45 are disposed below the washing tank 42. A fixed nozzle 46 formed in a substantially cross shape is disposed on the back surface of the cleaning tank 42. Further, in the cleaning tank 42, a lower tableware basket 47 and an upper tableware basket 48 that house the object 43 to be cleaned are arranged so that they can be pulled out in the front-rear direction. The cleaning object 43 is cleaned by spraying cleaning water from the first rotating nozzle 44, the second rotating nozzle 45, and the fixed nozzle 46 onto the cleaning object 43 accommodated in the cleaning tank 42. .

  A drain port communicating with the suction side of the cleaning pump 49 is provided at the bottom of the cleaning tank 42, and a residue filter that collects residue and a heater that heats the cleaning water are disposed at the drain port. The washing water that has passed through the residue filter is sucked into the washing pump 49 and pressurized, and the water supply means 53 sequentially switches the supply of the washing water to the first and second rotary nozzles 44 and 45 and the fixed nozzle 46. The cleaning water is jetted from the first and second rotary nozzles 44 and 45 and the fixed nozzle 46.

  About the dishwasher which becomes the said structure, the operation | movement and an effect | action are demonstrated below. The lower tableware basket 47 and the upper tableware basket 48 that store the object to be cleaned 43 by opening the door are stored in the cleaning tank 42. When the detergent is closed and the cleaning tank 42 is closed by the door, the operation is started and the cleaning is performed. It performs in order of a process, a rinse process, and a drying process. First, the water supply valve is operated to supply a predetermined amount of cleaning water into the cleaning tank 42. The supplied cleaning water is heated by a heater, pressurized by a cleaning pump 49, and selectively supplied to the first and second rotary nozzles 44 and 45 and the fixed nozzle 46 from the water dividing means 53. The Here, the water distribution means 53 supplies the cleaning water at predetermined intervals in the order of the first rotating nozzle 44, the first rotating nozzle 44, the second rotating nozzle 45, the second rotating nozzle 45, and the fixed nozzle 46. It operates to switch.

The first and second rotary nozzles 44 and 45 are rotated by a jet flow in which the supplied wash water is ejected from the ejection port, and the wash water that is rotated and moved is jetted to be mainly stored in the lower tableware basket 47. The object 43 is washed. The fixed nozzle 46 sprays washing water in the direction of the upper tableware basket 48 from the injection ports 56 arranged in the horizontal direction under the upper tableware basket 48 and cleans the inner surface of the object 43 to be cleaned. The outer surface of the object to be cleaned 43 is cleaned with cleaning water sprayed in a fan shape in a substantially horizontal direction from the cleaning water injection port 55 opened at the top.
JP 2004-267661 A

  However, in the conventional configuration, in order to clean the outer surface of the object to be cleaned installed in the upper tableware basket, the fixed nozzle is configured to have an injection port at the highest position of the cleaning tank. Is getting bigger. In addition, since the volume of the water conduit in the fixed nozzle is increased, a large amount of cleaning water is required to inject the cleaning water from the fixed nozzle, and there is a problem that the amount of water used for operation increases. It was.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a dishwasher in which a fixed nozzle is compactly configured and can be operated with less washing water.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a tableware basket having an upper basket for installing an object to be cleaned, a cleaning tank for storing the tableware basket, and heating means for heating the cleaning water. A pump that circulates the cleaning water under pressure, a drain port that communicates with the suction side of the pump, and a plurality of cleaning means that include a plurality of injection ports for injecting the cleaning water. A fixed nozzle arranged on the wall surface of the two cleaning tanks, the fixed nozzle having an injection port for injecting cleaning water toward the wall surface of the cleaning tank, and cleaning the water injected from the injection port The object to be cleaned, which is reflected in the tank and placed in the upper basket in the substantially vertical direction, is cleaned.

  Thus, the object to be cleaned positioned above the fixed nozzle can be cleaned by the compact fixed nozzle.

  The dishwasher of this invention can comprise a fixed nozzle compactly, and can reduce the amount of water required for a driving | operation.

  1st invention is the tableware basket which has the upper basket which installs a thing to be cleaned, the washing tank which stores the tableware basket, the heating means which heats washing water, the pump which pressurizes and circulates washing water, A fixed nozzle disposed on the wall surface of at least one of the cleaning tanks, comprising: a drain port communicating with the suction side of the pump; and a plurality of cleaning means including a plurality of injection ports for spraying cleaning water. The fixed nozzle has an injection port for injecting cleaning water toward the wall surface of the cleaning tank, and the cleaning water sprayed from the injection port is reflected on the cleaning tank and installed in the upper basket. By cleaning an object to be cleaned positioned substantially in the vertical direction, the fixed nozzle can be made compact, and the amount of water used for operation can be reduced.

  In particular, the second invention has an inclined portion on the inner wall of the cleaning tank of the first invention, and the inner wall of the cleaning tank is arranged by arranging the inclined portion so that the cleaning water sprayed from the fixed nozzle hits the object to be cleaned. It is possible to wash efficiently by introducing the wash water that hits the object to be cleaned.

  In particular, the third invention has a water diversion means for switching the washing means through which the washing water is passed from the pump of the first invention or the second invention, and the washing water is sequentially ejected from the plurality of washing means. As a result, it is possible to inject cleaning water from multiple cleaning means without reducing the injection pressure and flow rate of the cleaning water sprayed from the cleaning means, and to reduce the amount of water used. Thus, efficient cleaning can be performed.

  According to a fourth aspect of the present invention, in particular, the water distribution means of the third aspect has a plurality of water conduits communicating with the plurality of cleaning means, and only one path of the water conduit is communicated with the fixed nozzle. Eliminates the need to wash relatively long polluted items such as water and hot water with more than necessary washing water and efficiently cleans the entire item to be washed by allocating cleaning power to cleaning means other than fixed nozzles. be able to.

  In the fifth aspect of the invention, in particular, the heating means of the third or fourth aspect of the present invention is positioned below the object to be cleaned by the cleaning water sprayed from the fixed nozzle, so that the cleaning water is discharged from the fixed nozzle. When the cleaning water level in the cleaning tank drops and the heating means is exposed, the cleaning water sprayed from the fixed nozzle falls to the heating means, which causes the heating means to become empty and overheated. Can be prevented. Since the heating means can be used in a mild environment, functional deterioration of the heating means can be suppressed and the safety of the product can be improved.

  According to a sixth aspect of the invention, in particular, the fixed nozzle of any one of the third to fifth aspects has a heating means cooling injection port for injecting the cleaning water to the heating means, thereby injecting the cleaning water from the fixed nozzle. When the cleaning water level in the cleaning tank drops and the heating means is exposed, the cleaning water sprayed from the fixed nozzle directly hits the heating means, thereby preventing the heating means from becoming empty and overheating. it can. Since the heating means can be used in a mild environment, functional deterioration of the heating means can be suppressed and the safety of the product can be improved.

  In the seventh invention, in particular, the drain outlet of any one of the third to sixth inventions is fixed by being positioned below in the vertical direction with respect to an object to be cleaned which is cleaned by the cleaning water sprayed from the fixed nozzle. When the cleaning water is sprayed from the nozzle and the cleaning water level in the cleaning tank is lowered, the water supply port is provided where the cleaning water sprayed from the fixed nozzle falls, so that the cleaning water can be recovered and circulated immediately. Since it is possible to prevent air from being mixed into the pump and reducing the discharge capacity of the cleaning water to reduce the cleaning ability, the amount of cleaning water to be circulated can be kept small, and the amount of water used can be reduced efficiently.

  The eighth aspect of the invention particularly has a diversion detection means in the washing tank for detecting the washing means through which washing water is passed from the diversion means of any one of the third to seventh aspects of the invention. By passing the cleaning water to the other cleaning means shorter than the time for passing the cleaning water to the other cleaning means, it is possible to shorten the time for cleaning relatively lightly washed objects such as cups and water smelts that are cleaned by the fixed nozzle. By allocating the cleaning time to the cleaning means other than the fixed nozzle in order to wash the object to be cleaned in a relatively contaminated state, the entire object to be cleaned can be efficiently cleaned in a short time.

  In particular, the ninth invention has a water diversion detecting means for detecting the washing means through which the washing water is passed from the water diversion means of the third or fifth to eighth inventions, and the fixed nozzle is A cleaning water conduit having an injection port for washing away the contaminated surface of the object to be cleaned, and a rinsing water conduit having an injection port for rinsing the surface of the object to be cleaned. Since the time for passing water is longer than the time for passing water through the rinsing channel, cleaning water can be focused on the contaminated surface of the object to be cleaned during cleaning. Can be cleaned.

  In the tenth aspect of the invention, in particular, the pump according to any one of the first to ninth aspects of the invention changes the discharge pressure of the washing water by changing the number of rotations of the motor and injects the washing water from the fixed nozzle. Since the cleaning water can be sprayed to a wide range of objects to be cleaned from the injection port of the fixed nozzle, 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 partially cutaway front view of a dishwasher according to a first embodiment of the present invention, and FIG. 2 is a side sectional view of the dishwasher.

  As shown in FIG. 1 and FIG. 2, the dishwasher body 1 is provided with a washing tub 3 that can be opened and closed by a door 2, and objects to be cleaned 4a, 4b such as tableware are set in the tableware baskets 5a, 5b. 3 is housed. The water supply valve 6 supplies cleaning water to the cleaning tank 3, and the pump 7 pressurizes the cleaning water and supplies it to cleaning means (cleaning nozzles) 8 and 9 provided with a plurality of injection ports 10 for cleaning. The cleaning water is ejected from the means 8 and 9, and the cleaning water in the cleaning tank 3 is discharged by changing the rotation direction.

  The cleaning means 8 and 9 are installed at two locations, a rotary nozzle 8 that sprays from below the tableware basket 5a and a fixed nozzle 9 that sprays from the back (side) side of the cleaning tank 3, and each cleaning means includes About 4 to 10 injection ports 10 for injecting cleaning water are provided. Further, the bottom of the washing tank 3 has a drain port 11 communicating with the suction side of the pump 7, and the drain port 11 is provided with a residue filter 12 for collecting residue and a heating means 13 for heating the wash water. A temperature sensor 14 for detecting the temperature of the cleaning tank 3 is provided.

  A blower (not shown) sends air to the cleaning tank 3 through a blower path (not shown) and discharges the exhaust from the exhaust port 15. Further, in the discharge path of the pump 7, a water distribution means 16 for selectively switching the cleaning means 8 and 9 for supplying cleaning water is installed. The water diversion means 16 is configured as shown in FIG. 3, and includes a valve body 18 movably provided in the casing 17 and four outflow portions 19a, 19b, 19c, 19d. Is provided with an opening 20 through which washing water passes.

  The opening 20 of the valve body 18 has a notch shape connected to the outer shape of the valve body 18, and the outflow portions 19a, 19b, 19c, 19d from the casing 17 have a substantially fan shape. The rotary nozzle 8 is connected to a rotary nozzle water conduit 21 connected to the outflow portions 19 a, 19 b and 19 c, and the fixed nozzle 9 is connected to a fixed nozzle water conduit 22.

  In addition, one cleaning means refers to an assembly of injection ports through which the cleaning water that has passed through one outflow portion 19 is injected, and is not limited to the case where there is only one rotating nozzle 8 or one fixed nozzle 9, Various configurations are conceivable, such as when there are a plurality of rotating nozzles, a combination of rotating nozzles and fixed nozzles, or when the location of the injection port is remote. There is no difference.

  FIG. 3 is a conceptual diagram of the water diverting means 16. In actuality, the casing 17 is divided into two parts in the vertical direction, and has a structure joined by screwing, fitting, welding, welding or the like. In addition, when the cleaning tank 3 is made of resin, a part of the casing 17 can be formed integrally with the bottom surface of the cleaning tank 3.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. The objects to be cleaned 4a, 4b such as tableware are set in the tableware baskets 5a, 5b, stored in the cleaning tank 3, and after the detergent is put in, the door 2 closes the opening of the dishwasher body 1 and starts operation. . The cleaning process is performed in order of removing dirt from the objects to be cleaned 4a and 4b, the rinsing process in which the attached detergent and residue are washed away, and the drying process for drying the water adhering to the objects to be cleaned 4a and 4b.

  First, the water supply valve 6 is operated to supply a predetermined amount of cleaning water to the cleaning tank 3, and then the cleaning water is pressurized by the pump 7, passes through the water dividing means 16, and is supplied from the injection port 10 of the cleaning means. Is sprayed onto the objects to be cleaned 4a, 4b. The water diversion means 16 is operated by the pressure of the washing water. When the valve body 18 rotates as the pump 7 is turned on and off, the predetermined outflow portions 19a to 19d are fixed at positions where they open, and cleaning water is jetted from the cleaning means communicating with the outflow portions 19a to 19d. The

  In FIG. 4, the injection pattern figure from each washing | cleaning means is shown. As shown in FIG. 4, the cleaning means that the cleaning water sprays is switched in the order of the fixed nozzle 9 → the rotating nozzle 8 → the rotating nozzle 8 → the rotating nozzle 8. This is one cycle of switching in which the valve element 18 makes one round, and cleaning is performed while repeating this injection pattern.

  The water diverting means 16 may use other methods such as rotating the valve body 18 by a drive motor or the like to switch the outflow portion, and the effect is the same.

  When the cleaning water is injected by pressurizing the cleaning water by the pump 7 and sequentially switching the cleaning means by the water distribution means 16, the heating means 13 such as a sheathed heater provided in the cleaning tank 3 is energized to supply the cleaning water. The washing step is performed while heating. Further, the temperature sensor 14 detects the temperature of the cleaning tank 3 and stops the energization to the heating means 13 when the temperature exceeds a predetermined temperature. The circulation of the washing water passes through the residue filter 12, is sucked into the pump 7, is supplied from the pump 7 to the washing means provided in the washing tank 3, and is sprayed from the washing means to wash the article 4 to be washed. This is performed along the route of returning to the drain port 11 again. At this time, the residue or the like dropped off from the object to be cleaned 4 flows into the residue filter 12 together with the cleaning water, and the residue having a size that cannot pass through the residue filter 12 is collected by the residue filter 12.

  When the cleaning process for a predetermined time is finished, the cleaning water containing dirt is discharged out of the apparatus by the pump 7, and the cleaning water is newly supplied. The pump 7 is operated, and the cleaning water is sprayed again from the cleaning means to rinse the object 4 to be cleaned, such as detergent and residue. 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 three times. Finally, the washing water is discharged outside the apparatus, and the rinsing process is completed.

  Subsequently, by performing a drying process and operating the blower, the outside air is blown into the cleaning tank 3 through the blower path and is discharged from the exhaust port 15. At this time, the heating means 13 is energized, and the evaporation of water droplets adhering to the object to be cleaned 4 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.

  In addition to the control of the supply of cleaning water to the cleaning tank 3, the cleaning and drainage control by the pump 7 and the output of the temperature sensor 14, the heating means 13 is heated to heat the cleaning water in the cleaning tank 3 to a predetermined temperature. The energization control, the drive control of the blower in the drying process, and the like are controlled by the control means 23 provided in the dishwasher body 1.

  Next, the operation and action of the cleaning means, which is a characteristic configuration of the present embodiment, will be described. The cleaning means has a rotating nozzle 8 that sprays cleaning water from below the lower basket 5a onto the object to be cleaned 4a and rotates around the axis by the jet, and a fixed nozzle 9 that sprays from the back (side) side of the cleaning tank 3. is doing. The fixed nozzle 9 injects cleaning water toward the top surface of the cleaning tank 3 to clean the outside of the object to be cleaned 4b such as a cup of the upper basket 5b, and the top surface injection for cleaning with the falling water flow It has the opening 10a and the upper basket injection port 10b which injects washing water directly to the to-be-cleaned object 4b installed in the upper basket 5b. The top surface injection port 10a injects cleaning water onto the top surface through the gap between the wall surface of the cleaning tank 3 and the upper cage 5b, so that the top surface injection port 10a is reliably not affected by the object to be cleaned 4b on which the upper cage 5b is installed. Thus, the cleaning water can reach the top surface, and the object to be cleaned 4b can be reliably cleaned.

  An inclined portion 24 is formed on the top surface of the washing tub 3 above the position of the object 4b to be washed such as a cup installed on the upper basket 5b, so that the washing water falls intensively on the yarn bottom or the like. Thus, the rinsing performance of the article to be cleaned 4b is improved.

  Since the fixed nozzle 9 is cleaned by injecting cleaning water from the injection port 10 at a position lower than the object to be cleaned 4b of the upper basket 5b, the structure of the fixed nozzle 9 can be made compact and can be easily produced at low cost. In addition, since the flow path volume in the fixed nozzle is reduced, the cleaning water in the cleaning tank 3 can be used effectively, so that the amount of cleaning water used can be reduced.

  Also, a heating means cooling spray port 10c for spraying cleaning water onto the heating means 13 is arranged below the fixed nozzle 9, and the heating means cooling spray port 10c dives under the tableware basket 5a and the rotary nozzle 8 to supply the cleaning water. Spraying to the heating means 13. Even if the washing water is pressurized and circulated by the pump 7 to lower the washing water level in the washing tank 3 and the heating means 13 is exposed to the water surface, the arrangement of the article 4a to be washed in the washing tank 3 and the state of the rotary nozzle 8 Since heat is reliably removed from the heating means 13 without being affected by the above, it is possible to prevent the heating means 13 from being overheated and to efficiently raise the temperature of the washing water.

  Further, by disposing the heating means 13 below the object 4b to be cleaned by the fixed nozzle 9, the cleaning water is pressurized and circulated by the pump 7 to lower the cleaning water level in the cleaning tank 3, and the heating means 13 Even if exposed to the surface of the water, the cleaning water that hits the object to be cleaned 4b falls on the heating means 13, so that the cleaning water always takes heat from the heating means 13 to prevent overheating of the heating means and efficiently clean the surface. The water temperature can be raised.

  In addition, by disposing the drain port 11 below the object 4b to be cleaned by the fixed nozzle 9, the washing water hitting the object 4b falls to the drain port 11, so that the pump 7 circulates under pressure. The cleaning water quickly accumulates in the drain port 11 and can be reliably operated without air being mixed therein. Since the amount of cleaning water required for the pressure circulation by the pump 7 is small, efficient cleaning can be performed with a small amount of cleaning water used.

  In addition, if the output of the pump 7 is made variable by using an inverter motor capable of changing the rotation speed of the pump 7, more efficient cleaning such as injection at a higher pressure and flow of a higher flow rate can be performed. it can. It becomes possible to change the spray angle of the washing water from the ejection port 10b of the fixed nozzle 9 to the object to be cleaned 4b, and a wide range of washing is possible even from the fixed nozzle.

  In addition, by having the water separation detection means 27 that can detect the cleaning means through which the cleaning water is passed from the water distribution means 16 in the cleaning tank, it is relatively contaminated such as a cup or a water scum washed by the fixed nozzle 9. The washing object 4b in a light state is washed in a short time, and the washing time is allocated to the rotary nozzle 8 in order to wash the washing object 4a in a relatively contaminated state. It can be cleaned efficiently.

  The diversion detection means 27 includes a method of detecting a place by arranging a magnet on the valve body, a method of detecting the movement of the washing water passing through the outflow portion 19, and the effect does not change in any case. . In FIG. 5, the injection pattern figure from each washing | cleaning means is shown. As shown in FIG. 5, the cleaning means that the cleaning water sprays is switched in the order of the fixed nozzle 9 → the rotating nozzle 8 → the rotating nozzle 8 → the rotating nozzle 8, and the time for spraying the cleaning water from the fixed nozzle 9 is shortened. It is set. This is one cycle of switching in which the valve element 18 makes one round, and cleaning is performed while repeating this injection pattern.

(Embodiment 2)
FIG. 6: shows the partially notched front view of the dishwasher in the 2nd Embodiment of this invention. In FIG. 6, the fixed nozzle 9 includes a cleaning water conduit 25 having an injection port for rinsing the inside which is a contaminated surface of the object to be cleaned 4 b such as a cup installed in the tableware basket 5 b, and an injection for rinsing the outside of the object to be cleaned 4 b. A rinse conduit 26 having a mouth is provided. In the rotary nozzle water conduit 21, a water diversion detection means 27 for detecting that cleaning water is flowing is disposed.

  FIG. 7 shows the configuration of the water distribution means 16. The rotary nozzle 8 is connected to the rotary nozzle conduit 21 connected to the outlets 19 a and 19 b, the cleaning conduit 25 of the fixed nozzle 9 is connected to the outlet 19 c, and the rinse nozzle 26 of the fixed nozzle 9 is connected to the outlet 19 d. Has been. The structure of other parts is the same as that of the dishwasher shown in the first embodiment of the present invention, and is omitted.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated. When the operation is started, first, a cleaning process for removing dirt from the objects to be cleaned 4a and 4b is performed. Since the object to be cleaned 4b has a lot of contamination inside, the water diversion detection means 27 performs the spray pattern from each cleaning means as shown in FIG. The cleaning means for spraying the cleaning water is switched in the order of the fixed nozzle 9 (cleaning water channel 25) → the fixed nozzle 9 (rinsing water channel 26) → the rotating nozzle 8 → the rotating nozzle 8, and the cleaning water is sprayed from the fixed nozzle 9. Set the time for the cleaning water to be shorter than the time for injecting the cleaning water from the rotary nozzle, and the time for injecting the cleaning water from the injection port 10d of the cleaning water conduit 25 within the time for injecting the cleaning water from the fixed nozzle 9; The time is set longer than the time for injecting the cleaning water from the injection port 10e of the rinsing water channel 26. Since cleaning water can be intensively sprayed onto the contaminated surface of the object to be cleaned, the entire object to be cleaned 4b can be efficiently cleaned in a short time.

  On the other hand, in the rinsing process, the operation is performed with an injection pattern as shown in FIG. Since the object 4b to be cleaned such as a cup installed in the tableware basket 5b is likely to have fine residue left on the thread bottom or the like, the injection port of the rinsing water channel 26 within the time for injecting the cleaning water from the fixed nozzle 9 The time for injecting the cleaning water from 10e is set longer than the time for injecting the cleaning water from the injection port 10d of the cleaning water conduit 25, and the entire object to be cleaned 4b is intensively rinsed outside the object to be cleaned 4b. It can be cleaned efficiently in a short time.

  As described above, the dishwasher according to the present invention can have a compact nozzle configuration and can be operated with a small amount of washing water. It can be applied to general cleaning equipment that cleans an object to be cleaned.

The partially cutaway front view of the dishwasher in Embodiment 1 of this invention Cross section of the main part of the dishwasher Bottom view of water distribution means of the dishwasher Spray pattern diagram from each cleaning means of the dishwasher Figure of spray pattern from each cleaning means at the time of water separation detection of the dishwasher The partially cutaway front view of the dishwasher in Embodiment 2 of this invention Bottom view of water distribution means of the dishwasher Spray pattern diagram from each cleaning means during the washing process of the dishwasher Spray pattern diagram from each cleaning means during the rinse process of the dishwasher Front view of a conventional dishwasher

Explanation of symbols

3 Washing tank 4a, 4b Object to be cleaned 5a, 5b Tableware basket 7 Pump 8 Rotating nozzle (cleaning means)
9 Fixed nozzle (cleaning means)
10 Injection port 11 Drain port 13 Heating means

Claims (10)

On the suction side of the pump, there is a tableware basket having an upper basket for installing an object to be cleaned, a cleaning tank for storing the tableware basket, a heating means for heating the cleaning water, a pump for pressurizing and circulating the cleaning water. And a plurality of cleaning means including a plurality of outlets for injecting cleaning water, wherein the cleaning means has a fixed nozzle disposed on a wall surface of at least one of the cleaning tanks, and the fixed The nozzle has an injection port for injecting cleaning water toward the wall surface of the cleaning tank, and the cleaning water sprayed from the injection port is reflected on the cleaning tank and is arranged in a substantially vertical direction above the upper basket. A dishwasher designed to clean the objects to be cleaned. The dishwasher according to claim 1, further comprising an inclined portion on an inner wall of the washing tank, wherein the inclined portion is arranged so that washing water sprayed from a fixed nozzle hits an object to be cleaned. 3. The dishwasher according to claim 1, further comprising a water diverting unit that switches a washing unit through which washing water is passed from the pump, wherein the washing water is sequentially jetted from the plurality of washing units. 4. The dishwasher according to claim 3, wherein the water diversion means has a plurality of water conduits communicating with the plurality of cleaning means, and only one path of the water conduits communicates with the fixed nozzle. The dishwasher according to claim 3 or 4, wherein the heating means is positioned below in a vertical direction with respect to an object to be washed by washing water sprayed from a fixed nozzle. The dishwasher according to any one of claims 3 to 5, wherein the fixed nozzle has a heating means cooling injection port for injecting washing water to the heating means. The dishwasher according to any one of claims 3 to 6, wherein the drain port is positioned below in a vertical direction with respect to an object to be cleaned by the cleaning water sprayed from the fixed nozzle. The washing tank has a water separation detection means for detecting the washing means through which the washing water is passed from the water dividing means, and the washing water is passed to the other washing means for the time for passing the washing water to the fixed nozzle. The dishwasher according to any one of claims 3 to 7, wherein the dishwasher is shorter than time. The water supply detecting means detects the cleaning means through which the cleaning water is passed from the water splitting means, the fixed nozzle has a cleaning conduit having an injection port for washing the contaminated surface of the object to be cleaned, and the object to be cleaned. A rinsing water channel having an injection port for rinsing the surface, and at the time of cleaning, the time for passing cleaning water through the cleaning water channel is longer than the time for passing water through the rinsing water channel. 3 or the dishwasher of any one of Claims 5-8. 10. The pump according to claim 1, wherein the pump changes the discharge pressure of the cleaning water by changing the number of rotations of the motor, and changes the angle at which the cleaning water is ejected from the fixed nozzle. dishwasher.