JP4504587B2 - Dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention cleans the tableware etc. which were stored in this washing tank by injecting washing water or rinse water into a washing tank from a washing nozzle and a rinse nozzle which are rotatably attached to a nozzle header arranged in a washing tank. The present invention relates to a dishwasher configured as described above.
[0002]
[Prior art]
2. Description of the Related Art A dishwasher for automatically washing dishes such as dishes and cups used for eating and drinking has been installed and widely used in kitchens and general households such as coffee shops and restaurants. Referring to the schematic structure of the dishwasher, as shown in FIG. 4, a watertight washing tank 12 is defined in the main body 11 of the dishwasher 10, and the upper and lower ends of the washing tank 12 are defined. An injection assembly including a cleaning nozzle 16 and a rinsing nozzle 20 is disposed in the vicinity of the section so that the injection holes (not shown) of the nozzles 16 and 20 face each other vertically.
[0003]
As shown in FIGS. 5 and 6, the cleaning nozzle 16 disposed above the cleaning tank 12 is integrally disposed on a nozzle holder 18 serving as an attachment base thereof, and the nozzle holder 18 is an upper nozzle. A header (nozzle header) 14 is rotatably mounted. That is, the upper nozzle header 14 is a bottomed cylindrical member having an opening 14 a formed below, and a first supply pipe 30 for supplying cleaning water to the cleaning nozzle 16 is provided on the outer surface of the header 14. It connects so that it may communicate with internal space through the established 1st communicating hole 14b. A second communication hole 14c is formed on the outer surface of the upper nozzle header 14 at a position where it does not interfere with the first communication hole 14b. The second communication hole 14c is communicated with the rinse nozzle 20 through the second communication hole 14c. The second supply pipe 32 is inserted and arranged toward the internal space. The second supply pipe 32 inserted into the second communication hole 14c extends in a direction orthogonal to the side surface of the upper nozzle header 14, and is bent downward at a position aligned with the axis. The bent portion extends downward from the opening 14a of the upper nozzle header 14 by a required length, and a male screw 32a is threaded on the outer periphery of the lower end thereof.
[0004]
The nozzle holder 18 is a cylindrical member set to have a slightly larger diameter than the outer diameter of the upper nozzle header 14, and, as shown in FIG. The cleaning nozzle 16 of a hollow cylindrical body is horizontally attached in a state where it communicates with the internal space of the holder 18 through the communication hole 18a. Further, a disc-like support 19 having a convex longitudinal section is disposed in the internal space of the nozzle holder 18. The support body 19 is provided with an insertion hole 19a having a required diameter along its axis, and is arranged in the holder 18 in a state where it is aligned with the axis of the nozzle holder 18. The second supply pipe 32 extending downward from the opening 14 a of the upper nozzle header 14 is inserted into the insertion hole 19 a and the second supply pipe 32 protrudes downward from the bottom surface of the support 19. A disk-shaped fixing nut 34 is screwed into the male screw 32a formed at the lower end. As a result, the nozzle holder 18 is rotatably mounted on the header 14 with the lower portion of the upper nozzle header 14 slightly inserted through the opening 18b located on the upper surface thereof.
[0005]
Further, as shown in FIGS. 5 and 6, the rinsing nozzle 20 includes a plurality of hollow cylindrical bodies 36 having a smaller diameter than the cleaning nozzle 16 and a support in which one end portion of the cylindrical body 36 is inserted. It is basically composed of the base body 38. The support base 38 includes a rectangular hollow base portion 40 and tube portions 42 that are formed to extend from the both end portions of the base portion 40 in a required length in a required length. The interior spaces of the two are in communication with each other. Further, the base 40 has an insertion hole 40a extending vertically through the hollow interior, and a bolt 44 is inserted into the insertion hole 40a. The bolt 44 is formed in a hollow shape along the axial direction from the distal end portion of the cylindrical portion, and a through hole 44b communicating with the hollow portion of the base portion 40 is opened at a position close to the head portion 44a so as to be orthogonal to the shaft center. In this case, a male screw 44c is threaded on the outer periphery of the tip portion of the cylindrical portion in a predetermined range along the axial direction from the tip. In the rinsing nozzle 20, a bolt 44 is inserted from below into the insertion hole 40 a provided in the base portion 40 of the support base 38, and a male screw 44 c at the tip protruding upward from the base portion 40 is provided in the second supply. The rinsing nozzle 20 is rotatably mounted on the upper nozzle header 14 by being screwed into a female screw 32b threaded on the inner periphery of the lower end portion of the pipe 32. The through holes 44b are arranged in the hollow interior of the base 40 in this state.
[0006]
When the washing process is started in the dishwasher 10 configured in this way, washing water is supplied from the first supply pipe 30 to the washing nozzle 16 via the upper nozzle header 14 and the nozzle holder 18, and the jet (not shown) It sprays in the said washing tank 12 from a hole. At this time, the cleaning nozzle 16 rotates horizontally in a predetermined direction around the second supply pipe 32 by the reaction force of the cleaning water, and efficiently cleans the tableware (not shown) stored in the cleaning tank 12. To do. When the rinsing operation is shifted to the cleaning process, the supply of the cleaning water from the first supply pipe 30 is stopped, and then the rinsing nozzle 20 is hollowed from the second supply pipe 32 through the bolt 44 and the support base 38. Rinsing water is supplied to the cylindrical body 36 and is injected into the cleaning tank 12 from the injection holes in the same manner as the cleaning nozzle 16. In the case of the rinsing nozzle 20 as well, the tableware rotates horizontally in a predetermined direction around the bolt 44 by the reaction force of the rinsing water, so that the tableware is efficiently rinsed.
[0007]
[Problems to be solved by the invention]
In the conventional dishwasher 10, when the cleaning nozzle 16 is disposed in the upper nozzle header 14, as described above, the external thread 32a of the second supply pipe 32 extending downward from the opening 14a of the upper nozzle header 14 is provided. A fixing nut 34 is screwed into this. However, as shown in FIG. 6, the fixing nut 34 used to support the cleaning nozzle 16 is set to have a smaller diameter than the diameter of the nozzle holder 18 and is positioned very close to the bottom surface of the nozzle holder 18. To be screwed in. For this reason, when attaching and detaching the cleaning nozzle 16, it is difficult to grasp the fixing nut 34 with fingers or the like, which causes a reduction in work efficiency. In addition, when the fastening nut 34 is not sufficiently fastened due to the decrease in workability, the nut 34 may be loosened during use of the cleaning machine 10. Therefore, an O-ring 35 for preventing loosening is used. In this case, however, there is a disadvantage that the number of assembling steps and the number of parts increase and the cost increases. Further, since the upper surface of the fixing nut 34 is formed in a flat shape, washing water, rinsing water and the like are likely to stay on the upper surface, and this also has the difficulty that it drips on the tableware and gets wet during or after the drying process. be pointed out.
[0008]
OBJECT OF THE INVENTION
The present invention has been proposed in view of the above-mentioned problems inherent in the prior art described above, and it has been proposed to suitably solve this problem. An object of the present invention is to provide a dishwasher capable of suppressing the wetting of tableware and the like.
[0009]
[Means for Solving the Problems]
In order to overcome the above-mentioned problems and achieve the desired purpose suitably, the dishwasher according to the present invention comprises:
After the cleaning nozzle or the rinsing nozzle is rotatably mounted on the nozzle header disposed at a predetermined position of the cleaning tank, the rinsing nozzle or the cleaning nozzle is rotatably mounted via the fastening member, and the cleaning is performed via the nozzle header. In the dishwasher configured to inject the washing water or the rinsing water supplied corresponding to the nozzle or the rinsing nozzle from each nozzle into the washing tub,
The main body portion constituting the fastening member is set to have a larger diameter than the mounting portion of the nozzle mounted on the nozzle header first with respect to the header, and the upper surface of the main body portion is required radially outward. An inclined portion that is inclined downward at an angle is formed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, a dishwasher according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. In addition, about the same same member already demonstrated with the prior art with reference to FIGS. 4-6, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted. FIG. 1 shows components of an injection assembly comprising an upper nozzle header 14 disposed above a washing tank 12 in a dishwasher 10, a nozzle holder 18 provided with a washing nozzle 16, a rinsing nozzle 20, and the like. It is a perspective view shown in the state isolate | separated along the assembly | attachment direction. 2 is a perspective view showing the rinsing nozzle 20 in an exploded state, and FIG. 3 is a vertical side view of an injection assembly in which the upper nozzle header 14, the cleaning nozzle 16 and the rinsing nozzle 20 are assembled.
[0011]
In this embodiment, the nozzle holder 18 is assembled to the upper nozzle header 14 using a large-diameter fixing nut 22 as a fastening member, as shown in the figure. The fixed nut 22 is located immediately above the nut 22 and is a disc-shaped main body set to a diameter sufficiently larger than the outer diameter of the nozzle holder 18 that is a mounting portion of the cleaning nozzle 16 with respect to the upper nozzle header 14. Part 24 and a support shaft 26 that is fitted from below to the central part of the main body part 24 and rotates integrally, and extends radially inward from the outer peripheral edge of the main body part 24. On the upper surface, an inclined portion 24a that is inclined downward at a required angle toward the outer side in the radial direction is formed. In addition, a plurality of arc-shaped hooking portions 24b having a curvature sufficient to be able to hook fingers or the like are formed on the outer peripheral edge of the main body portion 24 in the circumferential direction. A male screw 26a is threaded on the outer peripheral surface of the support shaft 26 protruding from the outer periphery. Further, the support shaft 26 is provided with a communication hole 26b having a required diameter extending vertically along the axis of the support shaft 26, and on the lower end portion side (the mounting side of the rinse nozzle 20) of the communication hole 26b. An internal thread 26c is threaded on the peripheral surface. The main body 24 of the fixing nut 22 is obtained by drawing a sheet metal having a required thickness.
[0012]
As shown in FIG. 3, a bolt 28 is screwed into the female screw 26 c of the support shaft 26. As shown in the figure, the bolt 28 has a shaft portion extending from the head portion 28a, the tip portion of which is formed in a required range with a slightly small diameter, and the female screw 26c and the outer peripheral surface of the small diameter portion. A male screw 28b to be screwed is threaded. In addition, a hollow portion 28d that opens at the tip is formed in the shaft portion of the bolt 28, and a through hole 28c is formed at a position close to the head portion 28a along a direction orthogonal to the shaft center. Then, the bolt 28 is inserted into the insertion hole 40a of the support base 38 constituting the rinse nozzle 20 so that the shaft portion is pivotably inserted from below, and then the male screw protrudes upward from the base portion 40 of the base 38. 28 b is fastened to the female screw 26 c of the support shaft 26. As a result, the bolt 28 is fixedly disposed on the support shaft 26 with its axis aligned, and the rinse nozzle 20 is disposed so as to be rotatable with respect to the fixed nut 22 around the bolt 28. When the bolt 28 is inserted into the insertion hole 40a of the support base 38, the through hole 28c is arranged to communicate with the hollow interior. That is, the communication hole 26 b of the support shaft 26 is configured to communicate with the hollow cylindrical body 36 of the rinse nozzle 20 through the hollow portion 28 d of the bolt 28, the through hole 28 c, the hollow interior of the support base 38 and the tube body portion 42. The
[0013]
The fixing nut 22 in which the rinse nozzle 20 is disposed in the lower part of the fixing nut 22 is a second one in which the male screw 26 a formed on the support shaft 26 extends downward from the opening 14 a of the upper nozzle header 14. The supply pipe 32 is screwed into the female screw 32b. That is, the rinse nozzle 20 is configured as a part that can be handled integrally with the fixed nut 22, and is rotatably mounted on the upper nozzle header 14 via the nut 22. In the nozzle holder 18 provided with the cleaning nozzle 16, the second supply pipe 32 is rotatably inserted into the insertion hole 19 a of the support 19 and is moved downward by the fixing nut 22 as in the conventional case. In a state where the removal is prevented, the upper nozzle header 14 is rotatably mounted. In the second supply pipe 32 of the embodiment, the female screw 32b to which the male screw 26a of the support shaft 26 is screwed is formed on the inner peripheral surface, and the male screw is formed on the outer peripheral surface. Absent.
[0014]
[Effect of the embodiment]
Next, the operation of the dishwasher according to the above-described embodiment will be described. In the dishwasher 10, when the cleaning process is started, cleaning water is supplied from the first supply pipe 30 to the cleaning nozzle 16 through the upper nozzle header 14 and the nozzle holder 18, and the cleaning is performed from an unillustrated injection hole. It is injected into the tank 12. As described above, the cleaning nozzle 16 horizontally rotates in a predetermined direction around the second supply pipe 32 by the reaction force of the cleaning water, so that the tableware stored in the cleaning tank 12 (not shown) ) Is efficiently cleaned. When the rinsing operation is started, the rinsing water is supplied from the second supply pipe 32 to the hollow cylindrical body 36 of the rinsing nozzle 20 through the support shaft 26, the bolt 28 and the support base 38, and the injection reaction force causes the bolt. The tableware and the like are rinsed by horizontally rotating in a predetermined direction around the center 28.
[0015]
In the above-described cleaning process, a part of the cleaning water and the rinsing water splashed in the cleaning tank 12 falls on the upper surface of the fixed nut 22, but these quickly flow down and stay along the inclined portion 24 a. Is suppressed. Accordingly, it is possible to prevent water from dripping and getting wet on the tableware or the like that has been cleaned. Note that the cleaning water supplied to the cleaning nozzle 16 during the cleaning operation is circulated and used, so that the leftovers separated from the tableware and the like are also circulated together with the water, and these leftovers adhere to the upper surface of the fixing nut 22. There is. However, by tilting the upper surface of the fixing nut 22 as in the embodiment, the leftovers etc. easily flow down along with the water, and there is no risk that the leftovers etc. will fall and adhere again to the tableware after washing. Moreover, it is suppressed that water, leftovers, etc. remain unsanitary by remaining on the fixing nut 22.
[0016]
As described above, the nozzle holder 18 provided with the cleaning nozzle 16 is attached to the upper nozzle header 14 by the fixing nut 22, and the rinsing nozzle 20 is provided to the fixing nut 22 via a bolt 28. For this reason, when the cleaning nozzle 16 and the rinsing nozzle 20 are attached to and detached from the upper nozzle header 14 for cleaning, maintenance, etc., only the work of removing or attaching the fixing nut 22 from the second supply pipe 32 by rotating it in an appropriate direction. Is enough. Specifically, a finger or the like is hooked on the hooking portion 24b of the main body portion 24 of the fixing nut 22 from the rinsing nozzle 20 side, and the fixing nut 22 is rotated. As a result, the fixing nut 22 is removed from the second supply pipe 32, and the rinsing nozzle 20 is detached from the upper nozzle header 14 integrally with the nut 22. Further, since the cleaning nozzle 16 is only supported rotatably on the fixed nut 22, it can be removed from the second supply pipe 32 by removing the nut 22.
[0017]
When both the nozzles 16 and 20 are attached to the upper nozzle header 14, first, the second supply pipe 32 extending downward from the opening 14 a of the upper nozzle header 14 is supported by the nozzle holder 18. The nozzle holder 18 is attached from below so as to be inserted into the insertion hole 19a in the body 19. In this state, the support shaft 26 of the fixing nut 22 to which the rinsing nozzle 20 is assembled via the bolt 28 is screwed into the second supply pipe 32 from below to be tightened. At the same time that the cleaning nozzle 16 is removed, the rinsing nozzle 20 is mounted.
[0018]
That is, the number of parts to be disassembled and assembled during cleaning and maintenance is reduced, and the work efficiency is improved. In addition, the fixing nut 22 is set to have a larger diameter than the nozzle holder 18 of the cleaning nozzle 16 that is mounted on the upper nozzle header 14 and is located immediately above, and a latching portion 24b is formed on the outer peripheral edge. Therefore, the rotation operation is facilitated, the work efficiency is further improved, and the burden on the operator is reduced. Furthermore, since the fixing nut 22 has a large diameter, a large tightening torque can be obtained, so that no slack will occur even if an O-ring for preventing slack is not used. That is, it is not necessary to perform maintenance of the O-ring, and the number of parts can be reduced and the cost can be reduced. Furthermore, since the fixing nut 22 is obtained by drawing a sheet metal, the weight is reduced, the burden during operation is reduced, and the weight applied to the member that supports the upper nozzle header 14 is also reduced. The fixing nut 22 can be mass-produced, and the manufacturing cost can be further reduced.
In the embodiment, the case of the injection assembly disposed on the upper side of the cleaning tank has been described. However, the case of the injection assembly disposed on the lower side is basically symmetrical with the upper injection assembly. Since it is a structure, the same structure can be employ | adopted. However, in the case of the lower injection assembly, after the cleaning nozzle is attached to the lower nozzle header via the nozzle holder, the rinsing nozzle is attached to the upper side via the fixing nut. The diameter of the fixing nut is set to be larger than the diameter of the nozzle holder (mounting portion) of the cleaning nozzle located immediately below the fixing nut. Also in this configuration, the fixing nut can be securely tightened, and it is prevented that water, leftovers, and the like remain on the upper surface of the nut, resulting in unsanitary conditions. In the embodiment, the rinsing nozzle is attached after the cleaning nozzle is attached to the nozzle header first, but the reverse configuration may be used. In other words, it is possible to adopt a configuration in which after the rinsing nozzle is mounted on the nozzle header, the cleaning nozzle is mounted via a fixing nut (fastening member) having a larger diameter than the mounting portion of the rinsing nozzle with respect to the header.
[0020]
【The invention's effect】
As described above, in the dishwasher according to the present invention, the fastening member is set to have a larger diameter than the mounting portion of the nozzle that is previously mounted on the nozzle header, so that the rotating operation becomes easy. The work efficiency is improved and the burden on the worker is reduced. In addition, since the fastening member has a large diameter, a large tightening torque can be obtained, so that the fastening member can be reliably mounted without using an O-ring for preventing loosening. Furthermore, since the inclined portion formed on the upper surface of the fastening member makes it difficult for washing water, rinsing water, or leftovers to remain, it is possible to prevent the dishes after washing from getting wet or dirty.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an upper nozzle header, a nozzle holder and a rinsing nozzle arranged in a dishwasher according to an embodiment in a separated state.
FIG. 2 is a perspective view showing a rinse nozzle in an exploded state.
FIG. 3 is a longitudinal side view of a main part shown in a state where an upper nozzle header, a nozzle holder, and a rinsing nozzle are assembled.
FIG. 4 is a perspective view schematically showing a dishwasher.
FIG. 5 is a perspective view showing an upper nozzle header and a rinsing nozzle according to a conventional technique in a separated state.
FIG. 6 is a longitudinal sectional side view of a main part shown in a state where an upper nozzle header, a nozzle holder, and a rinsing nozzle according to a conventional technique are assembled.
[Explanation of symbols]
12 Cleaning tank, 14 Upper nozzle header (nozzle header), 16 Cleaning nozzle 18 Nozzle holder (mounting part), 20 Rinsing nozzle 22 Fixing nut (fastening member), 24 Body part, 24a Inclined part

Claims (1)

After the cleaning nozzle (16) or the rinsing nozzle (20) is rotatably mounted on the nozzle header (14) disposed at a predetermined position of the cleaning tank (12), the rinsing nozzle (20 ) Or a cleaning nozzle (16) is rotatably mounted, and cleaning water or rinsing water supplied corresponding to the cleaning nozzle (16) or the rinsing nozzle (20) via the nozzle header (14) is supplied to each nozzle ( 16,20) in the dishwasher configured to spray into the washing tank (12),
The main body portion (24) constituting the fastening member (22) has a larger diameter than the mounting portion (18) with respect to the header (14) of the nozzle (16, 20) previously mounted on the nozzle header (14). A dishwasher characterized in that an inclined portion (24a) is formed on the upper surface of the main body portion (24) so as to be inclined downward at a required angle toward the radially outer side.

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