JP2015029639A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent noise generated inside a washing chamber from leaking from a flow passage for allowing the inner pressure of the washing chamber to escape while smoothly allowing the inner pressure to escape.SOLUTION: An extension member 8 erected downward to meet an inner wall 7 of a washing chamber 2 is arranged at the lower end of a door 4 in a dishwasher. An air flow passage 9 is formed between the inner wall 7 and the extension member 8. A drain board 10 erected inward from the inner wall 7 of the washing chamber 2 over an air introduction port is arranged on the outer side of the air introduction port of the flow passage 9. Sound block boards 11, 12 respectively erected from both of the inner wall 7 and the extension member 8 are alternately arranged in the longitudinal direction of the flow passage 9 inside the flow passage 9 so as to form a labyrinth.

Description

  The present invention relates to a dishwasher in which noise generated in a cleaning chamber is prevented from leaking outside the cleaning chamber in a cleaning and rinsing process.

  2. Description of the Related Art A dishwashing machine that can wash used dishes such as dishes and cups used for eating and drinking without human intervention has been widely used in kitchens of stores such as restaurants and general households. Referring to FIG. 1 for explaining the dishwasher according to the present invention as the dishwasher, the dishwasher includes a washing chamber 2 for storing dishes to be washed, and a detergent is provided on the bottom surface and the ceiling surface in the washing chamber 2. The one having the nozzle 3 for sequentially injecting the washing water containing the rinsing water and the rinsing water has become the mainstream. Washing water and rinsing water sprayed from the nozzle 3 are pressurized by a pump (not shown), and the dishes can be washed along with the spraying.

  The washing water and rinsing water are often heated to about 60 to 70 ° C. in order to enhance the washing and rinsing effect. When the cleaning water or the like is heated in this way, the internal pressure may increase due to the vapor pressure in the cleaning chamber 2. And the door 4 of the washing | cleaning chamber 2 is pushed toward the outer side from the inner side by the internal pressure, and the trouble which this door 4 opens carelessly may arise.

  Therefore, in order to suppress the increase in the internal pressure, for example, in the configuration shown in FIG. 4, an extending member 8 that stands downward is provided at the lower end portion of the door 4 along the inner wall 7 of the cleaning chamber 2. An air flow path 9 that leads from the inside to the outside of the cleaning chamber 2 is formed between the extending member 7 and the extending member 8. By forming the flow path 9 in this way, air in the cleaning chamber 2 is discharged through the flow path 9, so that an increase in internal pressure in the cleaning chamber 2 can be prevented, and the internal pressure is inadvertent. The trouble of opening the door 4 can be avoided.

  However, by simply forming the air flow path 9, the liquid level of the cleaning water or the like stored at the bottom of the cleaning chamber 2 by the cleaning water or the like jetted from the nozzle 3 at a high pressure during the operation of the dishwasher. May oscillate greatly and the washing water or the like may leak out of the washing chamber 2 through the flow path 9. Therefore, in the configuration of the figure, in order to prevent the leakage, the lower end of the extending member 8 is slightly bent toward the inner wall 7 side to narrow the entrance of the flow path 9 and the inner wall 7 side of the flow path 9 In addition, a draining plate 10 that stands up toward the extending member 8 is provided. In this way, by narrowing the entrance of the flow path 9 and providing the draining plate 10, it becomes difficult for the cleaning water or the like in the cleaning chamber 2 to enter the flow path 9, and the entering cleaning water or the like is removed by the draining plate 10. Since it can be blocked, it is possible to prevent the cleaning water or the like from leaking out of the cleaning chamber 2 through the flow path 9.

  Further, for example, in the configuration shown in Patent Document 1, a silencer duct and an exhaust duct are provided to form an air flow path that leads from the inside to the outside of the cleaning chamber. A shutter that opens and closes the flow path is provided in the exhaust duct. While this shutter is closed in the cleaning process and the rinsing process, in the drying process, it is opened by the force of warm air sent into the cleaning chamber (see paragraph 0039 of the same document). By opening and closing the shutter in this way, it is possible to prevent noise from leaking from the cleaning chamber in the cleaning and rinsing steps, and to quickly discharge the humid air generated in the drying step to the outside of the cleaning chamber.

JP 2011-172826 A

  In the configuration shown in FIG. 4, the washing water or the like that has entered the flow path 9 hits the lower surface of the draining plate 10 (see the arrow f5 in the figure), and noise is generated (see the arrow f6 in the figure). . This noise is directly transmitted to the outside of the cleaning chamber 2 through this flow path 9 as there is no shielding between the upper surface side of the draining plate 10 and the outlet of the flow path 9 (in the figure). See arrow f7). In addition, since the draining plate 10 serving as a noise source is in the flow path 9, the noise generated in the draining plate 10 is not attenuated in the flow path 9, and the noise tends to increase. There is a problem.

  In the configuration shown in Patent Document 1, since the shutter provided in the exhaust duct is basically closed in the cleaning and rinsing steps, the action of releasing the internal pressure in the cleaning chamber is not exhibited. Of course, if the internal pressure rises to a predetermined value or higher, the shutter can be opened by the internal pressure even in the cleaning and rinsing steps. However, sudden release of the internal pressure occurs at that time, which causes noise from the exhaust duct.

  Therefore, an object of the present invention is to prevent the noise generated in the cleaning chamber from leaking from the flow path for releasing the internal pressure while smoothly releasing the internal pressure in the cleaning chamber.

  In order to solve the above problems, the present invention is provided so as to be along a cleaning chamber for storing dishes to be cleaned, a door for opening and closing an opening for taking in and out the dishes in the cleaning chamber, and an inner wall of the cleaning chamber. An extending member that is provided upright at the end of the door and forms an air flow path between the inner wall and the inside from the inside of the cleaning chamber, and an outside of the air inlet of the flow path, A draining plate that stands up from the inner wall over the air introduction port while being spaced apart from the air introduction port, and the door is provided to be rotatable around a rotation shaft, and around the rotation shaft. By rotating, the washing chamber is opened and closed, and a dishwasher is provided in which the extending member and the draining plate are arranged on the rotating shaft side of the door.

  Thus, by providing a draining plate outside the air inlet of the flow path, it is possible to prevent the water in the cleaning chamber from entering the flow path, and it is generated when the water hits the draining plate. Sound is less likely to be transmitted through the flow path. For this reason, the noise which leaks out of a washing chamber through this flow path can be reduced significantly. Moreover, by separating the draining plate and the air inlet of the flow path, the internal pressure in the cleaning chamber can be smoothly released from the gap. For this reason, the trouble which a door opens carelessly by the internal pressure during driving | operation can be prevented.

  In addition, when the draining plate is disposed on the side opposite to the rotation axis of the door, when the door is opened, the draining plate provided on the inner surface of the cleaning chamber and the extending member provided on the door are exposed. (A state where the hand can be easily touched). Then, when the tableware is put in and out, the draining plate may be deformed by mistakenly applying the tableware to the draining plate or the extending member. When the draining plate is deformed, washing water or the like enters the flow path, causing noise in the flow path. On the other hand, when this draining plate is arranged on the rotating shaft side, even if this door is opened, the draining plate and the extending member are kept close to each other, and they are not exposed. For this reason, the draining plate or the like is not deformed, and the noise preventing action by the draining plate and the extending member can be surely exhibited.

  In the above-described configuration, the sound insulation plate provided on the inner wall is provided on the inner wall with a sound insulation plate standing toward the extension member, and on the extension member with a sound insulation plate standing on the inner wall. It is preferable that the sound insulation plates provided on the extending member are alternately arranged along the length direction of the flow path.

  In this way, the labyrinth is formed by alternately arranging the sound insulating plates on both the inner wall and the extending member, and when noise passes through the flow path, the labyrinth gap, that is, the sound insulating plate is bypassed. Must be propagated to. As a result, compared to the case without this sound insulation plate, the noise must propagate a long distance in order to pass through the flow path, and the effect of retaining noise in this flow path (labyrinth effect) occurs. During that time, noise can be attenuated. For this reason, it is possible to greatly reduce the noise generated when the washing plate hits the draining board and the noise generated when the washing water hits the inner wall of the washing room or the tableware.

  The present invention provides a dishwasher having a noise prevention function, wherein an extension member standing up along the inner wall of the cleaning chamber is provided on the door of the cleaning chamber, and is formed between the inner wall and the extension member. In addition, a flow path for air that communicates from the inside to the outside of the cleaning chamber is formed, and the air passage is erected from the inner surface while being separated from the air introduction port on the outside of the air introduction port of the flow path. The structure provided with the draining board which blocks | prevents that water enters into the said flow path was employ | adopted. Thus, by preventing the water in the cleaning chamber from entering the flow path, the sound generated by the water hitting the draining plate is less likely to enter the flow path. For this reason, the noise which leaks out of a washing chamber through this flow path can be reduced significantly. Moreover, by separating the draining plate and the air inlet of the flow path, the internal pressure in the cleaning chamber can be smoothly released from the gap. For this reason, the trouble which a door opens carelessly by the internal pressure during driving | operation can be prevented.

Apparatus schematic showing an embodiment of a dishwasher according to the present invention FIG. 1 is a cross-sectional view of an essential part showing a state in which the door is closed in the dishwasher shown in FIG. FIG. 1 is a cross-sectional view of an essential part showing a state in which the door is opened in the dishwasher shown in FIG. Sectional drawing of the principal part which shows embodiment of the tableware washing machine which concerns on a prior art

  The apparatus schematic which shows embodiment of the dishwasher which concerns on this invention is shown in FIG. This dishwasher is provided in a housing 1 with a cleaning chamber 2 for storing dishes to be cleaned, and a nozzle that is horizontally rotatable on the bottom surface and the ceiling surface of the cleaning chamber 2 and sequentially jets cleaning water and rinsing water. 3, a washing chamber 2 for taking in and out the tableware, a door 4 for opening and closing an opening on the front side, a hot water storage tank for storing cleaning water heated to about 60 to 70 ° C., a heater provided in the hot water storage tank, A pump for supplying cleaning water or the like in the hot water storage tank to the nozzles 3 and 3 through a pipeline system, a control unit for controlling the operation of each device, and the like are provided. In the figure, description of members (such as the pump) that are not directly related to the present invention is omitted.

  A cleaning basket (not shown) is provided in the cleaning chamber 2, and dishes to be cleaned are stored in the cleaning basket. As shown in a sectional view of the main part in FIG. 2, a horizontal rotation shaft 5 is provided at the lower end of the door 4. By grasping the handle 6 provided on the upper part of the door 4 and pulling it toward the front side, the door 4 is rotated around the horizontal rotation shaft 5 to be opened and closed. An extending member 8 is provided at the lower end portion of the door 4 so as to stand downward along the inner wall 7 of the cleaning chamber 2. A gap is formed between the inner wall 7 and the extending member 8, and this gap serves as an air flow path 9 from the inside to the outside of the cleaning chamber 2.

  On the outside of the air introduction port of the flow path 9 (on the lower side in the present embodiment), a draining plate 10 is provided that rises inward from the inner wall 7 of the cleaning chamber 2 so as to exceed the air introduction port. The draining plate 10 and the lower end of the extending member 8 are slightly separated from each other, and the air in the cleaning chamber 2 flows into the flow path 9 through the gap.

  The extending member 8 is provided with a sound insulating plate 11 (11a, 11b) standing up toward the inner wall 7, and the inner wall 7 is provided with a sound insulating plate 12 (12a, 12b) rising up toward the extending member 8. Is provided. In addition, the sound insulation board 12a is comprised by folding the upper end of the exterior plate of the front panel of a dishwasher inside (washing chamber 2 side).

  The sound insulating plates 11 and 12 are alternately (alternately) arranged along the length direction of the flow path 9, and a labyrinth is formed in the flow path 9. Some of the sound insulating plates 11 and 12 have their tips bent downward (see reference numerals 11a, 11b, and 12a in the figure). By bending downward in this manner, when the water vapor that has entered the flow path 9 from the cleaning chamber 2 is liquefied into water in the flow path 9, the liquefied water is smoothly returned to the cleaning chamber 2. be able to. Further, since the noise is reflected by the bent sound insulating plates 11a, 11b and 12a in the reverse direction of the flow path 9 (on the air inlet side), there is an advantage that the noise leaking out of the cleaning chamber 2 can be further reduced. .

  As shown in FIG. 3, when the door 4 is opened to the front side, the door 4 rotates about the rotation shaft 5, and the extending member 8 provided at the lower end portion of the door 4 rotates with it. During the rotation, the sound insulation plate 11 (12a, 12b) provided on the inner wall 7 and the sound insulation plate 11 (11a, 11b) provided on the extending member 8 do not interfere with each other. Twelve shapes and formation positions are designed.

  Since the cleaning chamber 2 and its peripheral members are exposed to heated cleaning water containing a detergent component, rust and the like are likely to occur. For this reason, a material such as a stainless steel plate having excellent heat resistance, durability, and corrosion resistance is often used as a member of the cleaning chamber 2 or the like.

  The soundproofing effect of this dishwasher will be described. During the operation of the dishwasher, the level of the cleaning water or the like stored in the bottom of the cleaning chamber 2 is greatly swung by the cleaning water or the like jetted from the nozzle 3 at a high pressure. At this time, the washing water or the like is blocked by the draining plate 10 standing from the inner wall 7 of the washing chamber 2 and cannot enter the flow path 9 (see the arrow f1 in FIG. 2). For this reason, it is possible to prevent the cleaning water or the like from hitting the internal members (sound insulating plates 11, 12, etc.) of the flow path 9 and generating noise in the flow path 9.

  Further, during operation of the dishwasher, noise is generated due to the washing water sprayed from the nozzle 3 hitting the inner wall 7 of the washing chamber 2 and the dishes. In the dishwasher according to the present embodiment, only a slight gap is formed between the tip of the extending member 8 and the draining plate 10 so as to release the internal pressure in the cleaning chamber 2. Of the noise generated in step 1, only a part enters the flow path 9 (see arrow f2 in the figure). Moreover, when the noise that has entered the flow path 9 passes through the labyrinth formed by the sound insulating plates 11 and 12, the noise is greatly attenuated by the labyrinth effect (see the arrow f <b> 3 in the figure). Noise transmitted to the outside (see arrow f4 in the figure) is negligible. For this reason, a high soundproofing effect is exhibited.

  The above embodiment is merely an example of the dishwasher according to the present invention, and the noise generated in the cleaning chamber 2 from the flow path 9 for releasing the internal pressure smoothly while releasing the internal pressure in the cleaning chamber 2 smoothly. As long as it can solve the problem of the present invention of preventing leakage, the internal structure of the other dishwasher, such as the shape and position of the draining plate 10, the number, shape and position of the sound insulating plates 11 and 12, etc. Appropriate changes are allowed.

DESCRIPTION OF SYMBOLS 1 Case 2 Cleaning chamber 3 Nozzle 4 Door 5 Horizontal rotation axis (rotation axis)
6 Handle 7 Inner wall 8 Extension member 9 Flow path 10 Drain plate 11 (11a, 11b) Sound insulation plate 12 (provided on the extension member) 12 (12a, 12b) Sound insulation plate (provided on the inner wall)

Claims (2)

A cleaning room (2) for storing dishes to be cleaned;
A door (4) for opening and closing an opening for taking in and out the tableware of the washing chamber (2);
It is provided upright at the end of the door (4) along the inner wall (7) of the cleaning chamber (2), and from the inner side of the cleaning chamber (2) to the outer side between the inner wall (7). An extending member (8) that forms a flow path (9) of air communicating therewith,
On the outside of the air inlet of the flow path (9), a draining plate (10) standing up from the inner wall (7) beyond the air inlet while being separated from the air inlet,
The door (4) is provided so as to be rotatable around a rotation shaft (5), and the cleaning chamber (2) is opened and closed by rotating around the rotation shaft (5). A dishwasher in which the extending member (8) and the draining plate (10) are arranged on the side of the rotating shaft (5) of the door (4).   The inner wall (7) is provided with a sound insulating plate (12) standing up toward the extending member (8), and the extending member (8) is provided with a sound insulating plate (standing up toward the inner wall (7)) ( 11), and the sound insulation plate (12) provided on the inner wall (7) and the sound insulation plate (11) provided on the extending member (8) are arranged in the length direction of the flow path (9). The dishwasher according to claim 1, wherein the dishwashers are arranged alternately.

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