JP5008428B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for washing and rinsing dishes.

Conventionally, as a technique in such a field, there is JP-A-9-15496. This gazette includes a detergent supply pump that supplies detergent into the cleaning tank, a sensor that detects the water level of the cleaning liquid in the cleaning tank, and a discharge valve that discharges the cleaning liquid provided at the bottom of the cleaning tank. A cleaning machine is disclosed. Then, based on the signal detected by the sensor, the supply of the detergent according to the supply amount of the rinsing water is adjusted to keep the concentration of the cleaning liquid constant.
JP-A-9-15496 JP-A-5-293071

  However, in the conventional dishwasher described above, the outlet of the pipe communicating with the detergent supply pump is arranged perpendicular to the liquid level of the washing water tank, so that the detergent remains in the pipe when the supply of the detergent is stopped. The liquid detergent is liable to sag due to surface tension, and the sag occurs after the liquid detergent, and the dripping liquid detergent may adhere to the tableware being rinsed. Further, in order to prevent the dripping liquid detergent from adhering to the tableware, for example, an attempt has been made to provide a guide member around the liquid detergent inlet. However, there is a problem that the structure is complicated, the number of parts is increased, the number of man-hours for attaching the guide member is increased, and the manufacturing cost is increased.

  An object of the present invention is to provide a dishwasher that has a simple configuration and can prevent the occurrence of sag after liquid detergent.

Dishwasher according to the present invention, by injecting wash water in the washing chamber was washed dishes, in injecting the rinsing water in the washing chamber dishwasher to perform rinsing dishes with, disposed in the cleaning chamber Rutotomoni A detergent discharge section for discharging the liquid detergent stored in the detergent tank and supplied by the detergent supply pump into the cleaning chamber. The detergent discharge section includes a detergent path for discharging the liquid detergent into the cleaning chamber, and a detergent path. A water pull-in path that communicates and draws the spray water sprayed in the cleaning chamber into the detergent path is provided.

  In the dishwasher according to the present invention, since the detergent path for discharging the liquid detergent into the cleaning chamber is provided in the casing of the detergent discharge section, the detergent is guided into the washing water tank along this path. In addition, since the water draw-in route that draws the jet water into the detergent route communicates with the detergent route, the jet water sprayed in the cleaning chamber always flows into the detergent route via the water draw-in route, and the detergent The liquid detergent in the path is washed away. Accordingly, it is possible to prevent the occurrence of sag after the liquid detergent. In addition, since a guide member for guiding the liquid detergent is not required, the configuration is simplified.

  The dishwasher according to the present invention further includes a detergent injection portion that protrudes from the side wall of the cleaning chamber and has a detergent introduction port for injecting liquid detergent into the cleaning chamber, and the detergent injection portion includes a first engagement portion. It is preferable that the detergent discharge part is provided with a second engagement part that is detachably engaged with the first engagement part, and the detergent introduction port communicates with the detergent path. is there. If it does in this way, a detergent discharge part and a detergent injection | pouring part can be engaged easily.

  In the dishwasher according to the present invention, in the case of the detergent discharge section, there are provided a plurality of liquid paths that are arranged in a radial manner in communication with the detergent introduction port. It is preferable that the openings are evenly opened around. In this case, any of the plurality of liquid paths can be used as a detergent path or a water pull-in path, and even if the detergent discharge part is attached to the cleaning chamber without worrying about the installation direction of the detergent discharge part, the lower side is It becomes the outlet of the detergent path, and the upper side becomes the inlet of the water drawing path.

  According to the dishwasher of the present invention, it is possible to prevent the occurrence of sag after the liquid detergent with a simple configuration.

  Hereinafter, a preferred embodiment of a dishwasher according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the dishwasher 1 has a main body case 2 made of stainless steel that is partitioned vertically. A machine room 3 is formed in the lower part of the main body case 2, and the machine room 3 accommodates an electrical box 6 containing a microcomputer (processing unit) 60 that controls the overall operation of the dishwasher 1. Has been. On the other hand, a cleaning chamber 7 is formed on the upper part of the main body case 2, and a door (not shown) that moves up and down is attached to open and close the cleaning chamber 7.

  A rack rail (not shown) is detachably disposed in the cleaning chamber 7, and a grid-like tableware rack 8 in which dishes P such as dishes and teacups are arranged on the rack rail. Is placed. Further, an upper cleaning nozzle 9 composed of three arms extending radially and an upper rinsing nozzle 11 extending in a straight line are rotatably disposed on the same axis at the upper portion of the cleaning chamber 7.

  Similarly, a lower cleaning nozzle 12 composed of three arms extending radially and a lower rinsing nozzle 13 extending in a straight line are rotatably disposed on the same axis at the lower portion of the cleaning chamber 7. Accordingly, the cleaning water is sprayed from the top and bottom by the cleaning nozzles 9 and 12 and the rinsing water is sprayed from the top and bottom by the rinsing nozzles 11 and 13 on the tableware P arranged in the tableware rack 8. And rinsing is performed efficiently.

  A first filter 14 is detachably disposed on the bottom surface 7 a of the cleaning chamber 7 configured as described above, and a cleaning water tank for storing cleaning water is provided below the first filter 14. 15 is formed. Further, a second filter 18 having a finer mesh than the first filter 14 is detachably disposed on the bottom surface 15a of the cleaning water tank 15, and a bottom surface 15a is provided below the second filter 18. The drop part 19 is formed so that a part may fall. The drop portion 19 is provided with a washing water heater 16 for maintaining the washing water, which is warm water, at a predetermined temperature, and a thermistor 17, which is a washing water temperature sensor for detecting the temperature of the washing water.

  A drain pipe 20 is connected to the bottom surface 19 a of the drop part 19, and the drain pipe 20 passes through the cylindrical part 18 a of the second filter 18 and has an upper end located in the cleaning water tank 15. The lower end portion of the overflow pipe 21 is fitted. Accordingly, excess cleaning water flows into the pipe from the inflow hole formed in the upper end portion of the overflow pipe 21, and is discharged to the outside through the drain pipe 20. Therefore, the cleaning water in the cleaning water tank 15 is kept at a constant water level. Kept.

  A wash water supply pump 23 is connected to the drop portion 19 of the wash water tank 15 via a wash water suction pipe 22. A cleaning water discharge pipe 24 is connected to the discharge port of the cleaning water supply pump 23, and the cleaning water discharge pipe 24 is branched into a first cleaning water discharge pipe 25 and a second cleaning water discharge pipe 26. The first cleaning water discharge pipe 25 is connected to the upper cleaning nozzle 9, and the second cleaning water discharge pipe 26 is connected to the lower cleaning nozzle 12.

  Further, a rinsing water tank 28 to which rinsing water is supplied from an external water heater (not shown) via a hot water supply pipe 27 is disposed in the machine room 3. The rinsing water tank 28 is provided with a rinsing water heater 29 for maintaining the rinsing water as warm water at a predetermined temperature, and a thermistor 31 as a rinsing water temperature sensor for detecting the temperature of the rinsing water. . Further, an overflow pipe 32 is provided in the rinsing water tank 28 for discharging excess rinsing water to the outside and keeping it at a constant water level. The rinsing water flowing into the pipe from the upper end thereof is drained from the drain pipe 20. It is discharged to the outside through.

  A rinsing water supply pump 34 is connected to the rinsing water tank 28 via a rinsing water suction pipe 33. A rinsing water discharge pipe 36 is connected to the discharge port of the rinsing water supply pump 34, and the rinsing water discharge pipe 36 branches into a first rinsing water discharge pipe 37 and a second rinsing water discharge pipe 38. The first rinsing water discharge pipe 37 is connected to the upper rinsing nozzle 11, and the second rinsing water discharge pipe 38 is connected to the lower rinsing nozzle 13.

  Further, a detergent tank 39 storing a liquid detergent W to be mixed with the washing water in the washing water tank 15 is disposed in the machine room 3. A detergent supply pump 42 is connected to the detergent tank 39 via a detergent suction pipe 41. One end of a detergent discharge pipe 43 is connected to the discharge port of the detergent supply pump 42, and a joint 46 for arranging the detergent discharge portion 45 in the cleaning chamber 7 is connected to the other end of the detergent discharge pipe 43. Is provided.

  As shown in FIGS. 2 and 3, the stainless steel joint 46 includes a detergent injection portion 44 protruding from the side wall 7b and a main body 51 fixed to the side wall 7b. The joint 46 extends in a direction orthogonal to the horizontal axis L1 direction and communicates with the first path 46a and the detergent discharge pipe 43 through the first path 46a for flowing the liquid detergent W in the horizontal axis L1 direction. A second path 46b is provided.

  The detergent injection part 44 protrudes from the side wall 7 b of the cleaning chamber 7, and a detergent introduction port 44 a for injecting the liquid detergent W into the cleaning chamber 7 is provided at the tip thereof. A male screw portion (first engaging portion) 44 b is formed on the outer periphery of the detergent injection portion 44. The detergent discharge portion 45 faces the main body portion 51 of the joint 46 with the side wall 7b of the cleaning chamber 7 interposed therebetween, and a female screw portion (second engagement portion) 47a provided inside the detergent discharge portion 45 and detergent injection. The male screw portion 44 b of the portion 44 is screwed, and the detergent discharge portion 45 is detachable with respect to the joint 46.

  As shown in FIGS. 5 to 7, the detergent discharge unit 45 includes a hollow housing 50. The housing 50 includes a substantially disk-shaped base portion 47 and a lid portion 48 that are disposed to face each other. In the center of the base portion 47, there is provided an insertion hole 47d having a circular cross section that extends in the direction of the central axis L2 (see FIG. 7) of the detergent discharge portion 45 and into which the detergent injection portion 44 is inserted. Is formed with a female screw portion 47 a that is screwed into the male screw portion 44 b of the detergent injection portion 44. Further, the base portion 47 is provided with four concave portions 47b at symmetrical positions with respect to the central axis L2 in order to reduce the weight.

  The lid portion 48 is installed to face the insertion hole 47d, and redirects the flow of the liquid detergent W introduced through the detergent introduction port 44a of the detergent injection portion 44 inserted into the insertion hole 47d toward the washing water tank 15. Let In this way, it is possible to prevent the liquid detergent W flowing out from the detergent introduction port 44a from being applied to the tableware P, and to reliably prevent foreign matter scattered during washing and rinsing from entering the detergent introduction port 44a. Can do.

  The lid portion 48 is provided with fan-shaped through holes 48c that are uniformly arranged at a distribution angle of 45 ° (see FIG. 5). A concave portion 48 a for inserting a driver is provided at the center of the lid portion 48. Accordingly, when the male screw portion 44b and the female screw portion 47a are screwed together or separated from each other, the assembly operation can be easily performed by inserting and turning the driver into the concave portion 48a.

  As shown in FIG. 7, the base portion 47 and the lid portion 48 are connected by four ribs 49 extending in the radial direction of the detergent discharge portion 45. The ribs 49 extend from the edge of the detergent discharge part 45 to the front of the insertion hole 47d, and are arranged at equal intervals with a distribution angle of 90 °. The casing 50 is formed with four liquid paths 52 to 55 that are evenly arranged radially by the partition of the rib 49 (see FIG. 5). The liquid paths 52 to 55 communicate with the detergent introduction port 44a of the detergent injection part 44 inserted into the insertion hole 47d, respectively, and also communicate with each other. The ends of the liquid paths 52 to 55 are evenly opened around the housing 50.

  Among the liquid paths 52 to 55, the liquid paths 52 and 53 disposed below the central axis L2 of the detergent discharge unit 45 are for discharging the liquid detergent W flowing from the detergent introduction port 44a to the cleaning chamber 7. The liquid paths 54 and 55 arranged as detergent paths and above the central axis L2 serve as water drawing paths for drawing the jetted water sprayed from the cleaning chamber 7 into the housing 50.

  The peripheral portion 47 c of the base portion 47 and the peripheral portion 48 b of the lid portion 48 are formed so as to gradually taper toward the liquid paths 52 to 55 formed between the base portion 47 and the lid portion 48. Yes. In this way, even if the liquid detergent W and the jet water sag, the liquid detergent W shortens the residence time at the peripheral portions 47c and 48b, and promotes the speed at which the liquid detergent W flows down. Can do.

  Further, since the peripheral edge 47 c of the base portion 47 is separated from the side wall 7 b, even if the liquid detergent W sags after the liquid detergent W occurs, the liquid detergent W does not move along the peripheral edge 47 c of the base portion 47. It is not transmitted to the side wall 7b, and it is possible to prevent the side wall 7b from being discolored due to the adhesion of the high-concentration liquid detergent W.

  With the configuration as described above, as indicated by an arrow A in FIG. 2, the liquid detergent W sent from the detergent discharge pipe 43 is directed to the cleaning chamber 7 by the first and second paths 46 a and 46 b of the joint 46. And then flows out of the detergent inlet 44a and reaches the detergent discharge portion 45. The liquid detergent W that has reached the detergent discharge portion 45 is further turned toward the washing water tank 15 by the lid portion 48 and flows down into the washing water tank 15 via the liquid paths 52 and 53.

  On the other hand, as shown by the arrow B, the spray water sprayed from the cleaning chamber 7 always passes through the liquid paths 54 and 55 disposed above the central axis L2 of the detergent discharge section 45, and the liquid paths 52 and 53. The liquid detergent W in the liquid passages 52 and 53 is washed away. Further, as shown in FIG. 2, the jet water enters from the through hole 48 c of the lid portion 48, flows into the liquid paths 52 and 53, and rinses the liquid detergent W in the liquid paths 52 and 53.

  Thus, since the liquid detergent W in the liquid paths 52 and 53 is always washed away by the jet water drawn from the liquid paths 54 and 55 and the through hole 48c, the occurrence of sag after the liquid detergent W is prevented. Can do. Moreover, since it is not necessary to install a guide member that guides the liquid detergent W as in the prior art, the occurrence of sag after the liquid detergent W can be suppressed with a simple configuration.

  Furthermore, the liquid paths 52 to 55 communicate with the detergent introduction port 44a and are evenly arranged radially, and the respective end portions are evenly opened around the casing 50. The paths 52 and 53 are not limited to the detergent path, and the liquid paths 54 and 55 are not limited to the water drawing path, and any path among the liquid paths 52 to 55 can be the detergent path or the water drawing path. Therefore, even if the detergent discharge part 45 is attached to the cleaning chamber 7 without worrying about the installation direction of the detergent discharge part 45, the liquid path below the central axis L2 of the detergent discharge part 45 becomes the outlet of the detergent path, and the central axis The liquid path above L2 serves as the inlet of the water draw-in path. Then, as a procedure for attaching the joint 46 and the detergent discharge part 45, first, the detergent injection part 44 of the joint 46 is inserted into the opening of the side wall 7b of the cleaning chamber 7, and then the detergent discharge part 45 is attached to the detergent injection part 44. If it does in this way, attachment work will become easy and an exclusive fixing member will be unnecessary.

  The present invention is not limited to the above embodiment. For example, the shape of the detergent discharge portion 45 may be an ellipse, a symmetric hexagon, or the like.

It is sectional drawing which shows one Embodiment of the dishwasher which concerns on this invention. It is sectional drawing which shows the positional relationship of a detergent discharge part and a joint. It is a disassembled perspective view which shows the positional relationship of a detergent discharge part and a joint. It is a front view which shows a joint. It is a front view which shows a detergent discharge part. It is a rear view which shows a detergent discharge part. FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dishwasher, 7 ... Cleaning room, 7b ... Side wall, 44 ... Detergent injection part, 44a ... Detergent introduction port, 44b ... Male screw (1st engaging part), 45 ... Detergent discharge part, 47a ... Female screw (Second engagement portion), 50... Casing, 52, 53... Liquid path (detergent path), 54, 55... Liquid path (water drawing path).

Claims (3)

In a dishwasher for washing dishes by jetting washing water in a washing chamber and rinsing dishes by jetting rinsing water in the washing chamber,
Wherein arranged in the cleaning chamber Rutotomoni comprises a detergent discharge portion for discharging the liquid detergent to be supplied to the washing chamber by pooled detergent supply pump to the detergent tank,
The said detergent discharge portion, and detergent path for discharging the liquid detergent into the washing chamber, in communication with the detergent path, draw water draw water jet injected in the washing chamber in the detergent path route And a dishwasher. A detergent injection part protruding from the side wall of the cleaning chamber and having a detergent inlet for injecting the liquid detergent into the cleaning chamber;
The detergent injection part is provided with a first engagement part,
The detergent discharge portion is provided with a second engagement portion that is detachably engaged with the first engagement portion,
2. The dishwasher according to claim 1, wherein the detergent introduction port communicates with the detergent path.   In the casing of the detergent discharge section, there are provided a plurality of liquid paths arranged in a radial pattern in communication with the detergent inlet, and the end portions of the liquid paths are evenly around the casing. The dishwasher according to claim 2, wherein the dishwasher is open.

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