WO2011093048A1

WO2011093048A1 - Dish-washing machine

Info

Publication number: WO2011093048A1
Application number: PCT/JP2011/000341
Authority: WO
Inventors: 博之中野; 啓明宮瀬; 清恭新海
Original assignee: パナソニック株式会社
Priority date: 2010-01-26
Filing date: 2011-01-24
Publication date: 2011-08-04
Also published as: JP5170119B2; JP2011152184A; CN202751364U; TWI505804B; TW201143700A

Abstract

A dish-washing machine comprises: a housing having an opening; a rail-receiving section provided to the housing and receiving a rail; and a wash tank adapted to be pulled out of the opening by the rail. The wash tank is configured of a bottom section-forming member and a wash tank member and comprises a seal section for sealing in a watertight manner the joint section formed between the upper end of the bottom section-forming member and the lower end of the wash tank member. The rail-receiving section is provided to the bottom section-forming member. As a result of the configuration, the weight of the wash tank and other parts does not act in the direction in which the seal section is pulled away. This enables the sealing ability of the seal section to be maintained for a long period of time and prevents water from leaking out of the joint section of the wash tank to the outside of the wash tank.

Description

dishwasher

The present invention relates to a built-in type dishwasher that cleans dishes and the like by spraying washing water.

Conventionally, this type of dishwasher is housed in a system kitchen and provided inside the housing 1 as shown in FIG. The washing tank 2 formed integrally with the bottom part and the side part is provided with an opening 3 on the upper side, and a table basket 5 for storing the tableware 4 is arranged inside. A cleaning nozzle 6 is rotatably provided below the tableware basket 5. The cleaning water stored in the cleaning tank 2 is pressurized and circulated by a cleaning pump 7 and sprayed from the cleaning nozzle 6 to clean the tableware 4. Is done.

Further, a rail 8 is fixed below the cleaning tank 2, and the cleaning tank 2 is supported so as to be movable in the front-rear direction. When the tableware 4 is put in and out, the washing tank 2 stored in the housing 1 is pulled forward, and the tableware 4 is accommodated from the opening 3. Next, when the cleaning tank 2 is returned to and stored in the housing 1, the lid 9 waiting in the upper space in the housing 1 closes the opening 3 of the cleaning tank 2. The lid 9 descends while moving backward by the link mechanism 10 or the like disposed on the side surface in the housing 1 and closes the opening 3 of the cleaning tank 2. The lid body 9 includes a first sealing member 11 made of an elastic body for contacting and sealing the cleaning tank 2 in a state where the opening 3 of the cleaning tank 2 is closed (see, for example, Patent Document 1). ).

On the other hand, a dishwasher as shown in FIG. 7 has also been proposed. The cleaning tank 13 for storing the tableware 12 includes a bottom constituent member 14 and a cleaning tank member 15 provided on the bottom constituent member 14. The cleaning tank 13 has an opening 16 in front of the cleaning tank member 15. The opening 16 is opened and closed by a door 17, and a cleaning nozzle 18 that jets cleaning water to the bottom component 14 is rotatably disposed. A table basket for storing the tableware 12 is disposed in the washing tank 13.

Further, the cleaning tank 13 has a combined configuration in which the cleaning tank member 15 is inserted from above the bottom component member 14 and is regulated in the vertical removal direction. Water leakage from the joint portion 19 is collected into the bottom component member 14 by an upward rising portion 20 provided in the bottom component member 14 (see, for example, Patent Document 2).

However, in the above-described conventional configuration shown in Patent Document 1, as shown in FIG. 8, as a configuration in which the cleaning tank 21 is divided into a bottom structural member 22 that configures the bottom and a cleaning tank member 23 that configures the side surface, the bottom structural member 22. When the coupling structure as shown in Patent Document 2 is applied to the cleaning tank member 23, the cleaning tank 21 is configured to be freely drawable, so that the cleaning operation is performed while the cleaning water is stored in the cleaning tank 21. If it does, by the momentum of operation, cleaning water will reach a position higher than the prescribed water level, will get over the rising portion 24 and will go out of the cleaning tank 21.

As a countermeasure, it is conceivable to seal the contact surface 25 between the bottom component member 22 and the cleaning tank member 23 using a sealing member (not shown) formed of an elastic body or the like. Since a vibration or force is applied to the abutting surface 25 by the pulling operation 21, there is a problem that it is difficult to maintain the sealing performance over the entire circumference in consideration of long-term use. Further, since the rail 108 is provided on the cleaning tank member 23, the weight of the tableware depends on the cleaning pump mounted on the bottom component member 22, the cleaning nozzle 26, and the internal configuration of the cleaning tank 21. It took the direction which pulls apart the seal part which water seals 25, and had the subject that it was difficult to maintain a sealing performance over a long period of time.

JP 2005-87271 A Japanese Patent Laid-Open No. 2000-296087

The present invention solves the above-described conventional problems, and includes a dishwasher body having an opening, and a washing tub provided so as to be freely drawn out from the opening, and configured by joining a bottom component member and a washing tub member. An object of the present invention is to provide a dishwasher that maintains the sealing performance of the joint even when used for a long time or during a drawer operation.

In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a dishwasher body having an opening, a rail receiving portion that receives a rail provided in the dishwasher body, and a washing tank that is drawn from the opening by the rail. The washing tub comprises a bottom component constituting the bottom of the washing tub, a cleaning tub member constituting the side of the washing tub, an upper end of the bottom component, and a lower end of the washing tub member. And a seal portion that seals the constructed joint portion with water, and the rail receiving portion is provided on the bottom component member.

This makes it possible to maintain the sealing performance at the joint of the cleaning tank even when the sealing performance of the sealing member has deteriorated due to long-term use. In addition, the weight of the cleaning tank and other parts does not affect the direction in which the seal portion is pulled away, and the sealing performance of the seal portion can be maintained for a long time.

The dishwasher of the present invention is a built-in type dishwasher that realizes a dishwasher having a washing tank with a vertically joined structure that can maintain the sealing performance at the junction of the washing tank even during a drawer operation or when used for a long time. be able to.

1 is a longitudinal sectional view of a dishwasher according to Embodiment 1 of the present invention. FIG. 2 is a perspective view seen from the front of the washing tub of the dishwasher according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional perspective view of a main part when viewed from the front of the washing tub of the dishwasher according to Embodiment 1 of the present invention. 4 is a cross-sectional view of the principal part taken along the line 4-4 of FIG. FIG. 5 is a sectional view taken along the line 5-5 in FIG. FIG. 6 is a longitudinal sectional view of a conventional dishwasher. FIG. 7 is a longitudinal sectional view of another conventional dishwasher. FIG. 8 is a longitudinal sectional view of still another conventional dishwasher.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of the dishwasher according to the first embodiment of the present invention, FIG. 2 is a perspective view seen from the front of the washing tub of the dishwasher, and FIG. 3 is from the front of the washing tub of the dishwasher. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. 5 is a sectional view taken along line 5-5 of FIG.

As shown in FIG. 1, the casing 27 accommodated in the system kitchen is provided with a cleaning tank 29 for accommodating and cleaning the dishes 28 inside. The cleaning tank 29 is provided at a lower portion thereof so as to be freely drawable in the front-rear direction along a set of rails 30 that are laid in the substantially horizontal direction on the inner sides of both sides of the casing 27. A table basket 31 that houses the tableware 28 is disposed inside the cleaning tank 29. A cleaning nozzle 32 is rotatably provided at the bottom of the cleaning tank 29 below the tableware basket 31. Inside the cleaning tank 29, a heater 33 such as a heater for heating the stored cleaning water, and a drain port 34 are provided at the bottom of the cleaning tank 29.

A cleaning pump 35 is disposed outside the bottom of the cleaning tank 29. Wash water accumulated in the drain port 34 is pressurized and circulated by the wash pump 35 and sprayed into the wash tank 29 from the spray hole 48 of the wash nozzle 32 to wash the dishes 28.

The cleaning water stored in the cleaning tank 29 is supplied from a water supply pipe through a water supply hose and a water supply valve (both not shown). When a water level detector (not shown) communicating with the cleaning tank 29 detects that the cleaning water has been supplied up to a predetermined cleaning water level 47, the controller closes the water supply valve and supplies the cleaning water to the cleaning tank 29. To stop.

Further, a lid 37 for closing the opening 36 of the cleaning tank 29 is movably disposed above the casing 27, and can be moved up and down by a pair of left and right parallel link mechanisms 38 including a pair of front and rear links. Supported. When the first sealing member 39 made of an elastic material such as rubber is fixed so as to seal the opening 36 of the cleaning tank 29 and the cleaning tank 29 is pulled out, the first seal member 39 is It can be displaced upward so as not to interfere with the back-and-forth movement.

Here, the configuration of the cleaning tank 29 will be described with reference to FIGS. The cleaning tank 29 has an opening 36 on the upper side, and includes a resin cleaning tank member 40 that constitutes a side surface and a resin bottom constituent member 41 that constitutes a bottom part.

The bottom component member 41 is formed in a bottomed tray shape, and a second seal member 42 made of an elastic body such as rubber is disposed at the outer peripheral upper end portion thereof. In order to hold the second seal member 42, the bottom component member 41 is formed with a groove 43 that is opened upward.

In addition, the bottom component 41 includes a movable rail portion 30d of the rail 30, a cleaning nozzle 32, a heater 33, a cleaning pump 35, a pump motor, a water level detector, a temperature sensor, and other electrical components necessary for controlling the operation of the dishwasher. And most of the mechanical parts are mounted and unitized.

The sealing rib 44 is provided in the lower end part of the outer periphery of the washing tank member 40 in front, rear, left and right. The seal rib 44 engages with the groove 43 of the bottom component member 41. The seal rib 44 suppresses the second seal member 42 from above and cooperates with the groove 43 to exhibit watertightness. A shielding rib 45 is provided so as to hang down on the inner side thereof. The shielding ribs 45 on both side surfaces of the cleaning tank 29 are provided without a step difference from the side wall 40 a of the cleaning tank member 40.

The outer peripheral upper end portion of the bottom component member 41 and the outer peripheral lower end portion of the cleaning tank member 40 are joined in the vertical direction. The joint portion is provided with a seal portion 54 including a groove portion 43, a seal rib 44, and a second seal member 42, and is sealed watertight. The recovery space 46 is provided between the shielding rib 45 and the groove 43 so as to communicate with the entire circumference of the cleaning tank 29, and the sealing performance at the joint is maintained. Further, the recovery space 46 prevents the cleaning water from rising due to capillary action and reaching the seal portion 54. At this time, the tip of the shielding rib 45 is configured such that the gap with the bottom component member 41, that is, the size of the entrance 46 a of the collection space 46 is smaller than the main space 46 b of the upper collection space 46.

Further, the tip of the shielding rib 45 is configured to be positioned above the prescribed cleaning water level 47 and below the injection holes 48 provided in the plurality of cleaning nozzles 32, and the bottom surface portion of the bottom component member 41. It is configured in a position where splashing water from the washing water does not splash. Further, the tip of the shielding rib 45 is configured not to be positioned outside the side wall portion 49 of the bottom component member 41 over the entire circumference of the cleaning tank 29.

Generally, in a dishwasher, a special detergent is dissolved in water and the dishes 28 are washed, but the wettability of the surface of the washing tank 29 is remarkably increased by components such as a surfactant contained in the detergent. When the wettability is increased, the capillary phenomenon is very strongly generated, so that the width of the recovery space 46 (main space 46b) is wider than the case where normal water is used. The recovery space 46 has a shape communicating with the entire circumference of the cleaning tank 29. That is, the cross-sectional shape shown in FIG. 4 including the collection space 46 is substantially the same shape over the entire circumference of the cleaning tank 29 except for the tableware basket support portion 53.

As shown in FIG. 3, in the vicinity of the left and right side walls of the bottom in the cleaning tank 29, there are provided a plurality of left and right tableware basket support portions 53 for placing and supporting the tableware basket 31. The tableware basket support portion 53 is divided into a support portion lower portion 53 a provided on the bottom component member 41 and a support portion upper portion 53 b provided on the cleaning tank member 40. Then, as will be described later, the cleaning tank member 40 and the bottom component member 41 are joined, so that the support upper part 53b is opposed to the upper part of the support lower part 53a as shown in FIG. A support portion 53 is formed. Further, the height position of the lower surface 53c of the support portion upper portion 53b, which is the divided surface, is substantially the same height as the lower end of the shielding rib 45 of the cleaning tank member 40.

Further, on both side surfaces of the bottom component member 41, rail receiving portions 50 that support the weight of the cleaning tank 29 are formed outside the side wall portion 49 and almost directly below the groove portion 43. At the outer end of the rail receiving portion 50, a rib 50a extends downward so as to cover the movable rail portion 30d of the rail 30 from above and from the outside, thereby enhancing the mechanical strength of the rail receiving portion 50. The cleaning water dropped from the lid 37 onto the outer wall of the cleaning tank member 40 is prevented from entering the rail 30.

An engaging portion 52 extends downward in a rib shape on the outside of the seal rib 44 provided at the lower ends of the front, rear, left and right outer peripheral portions of the cleaning tank member 40. Several convex portions 51 are provided on the outer periphery of the groove portion 43 of the bottom component member 41, and an engaging hole 52 a is configured at a position corresponding to the convex portion 51 in the engaging portion 52 of the cleaning tank member 40. The cleaning tank member 40 is inserted from above the bottom component member 41. As a result, the engaging portion 52 is elastically deformed, the convex portion 51 is engaged with the engaging hole 52a, and the cleaning tank member 40 and the bottom component member 41 are joined. In the state where the cleaning tank member 40 and the bottom component member 41 are joined, the lower ends of the engaging portions 52 on the left and right side surfaces are in contact with the upper surface of the rail receiving portion 50. By joining the cleaning tank member 40 and the bottom component member 41 as described above, both are bonded with a simple structure, and the cleaning water dripped from the lid 37 to the outer wall of the cleaning tank member 40 is It is possible to prevent the second seal member 42 from entering and maintain the sealing performance at the joint.

Further, as shown in FIG. 4, the cross-sectional shape of the fixed rail portion 30e of the rail 30 has a raised portion 30b on the outer side of the movable mechanism portion 30a, and further has a groove portion 30c that is one step lower than the raised portion 30b. The lower end outside of the rib 50a provided at the outer end portion of the rail receiving portion 50 of the bottom component member 41 is positioned directly above or outside the raised portion 30b. Thus, the cleaning water dripped from the lid 37 to the outside of the lower end of the rib 50a through the outer wall of the cleaning tank member 40 is guided to the groove 30c and prevented from entering the movable mechanism 30a of the rail 30. Yes. Further, although not shown, a through hole is provided in either rear part of the movable mechanism part 30a and the groove part 30c, and the wash water that has been dripped and guided falls to the inner bottom part of the casing 27, and in the vicinity thereof. It is made to detect by the arranged water leak detection sensor.

About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. In the cleaning tank 29, the cleaning tank member 40 is inserted from above the bottom component member 41 on which the second seal member 42 is set, so that the engaging portion 52 is temporarily deformed by its own elasticity. Then, the engagement hole 52a engages with the convex portion 51 provided in the cleaning tank member 40, and the vertical movement of the cleaning tank member 40 and the bottom component member 41 is restricted. Thus, the cleaning tank member 40 and the bottom component member 41 are combined and integrated. At that time, the seal rib 44 of the cleaning tank member 40 presses the second seal member 42 from above to deform it to a specified tightening position, and the joint is sealed with water. By integrating the cleaning tank 29, the recovery space 46 is configured by the shielding rib 45 provided in the cleaning tank member 40 and the groove 43 of the bottom component member 41. Here, the second seal member 42 is used as an elastic body, but a silicon adhesive or the like can be sealed with water.

The shielding rib 45 provided on the inner side of the groove portion 43 is disposed so that the size of the inlet 46a of the recovery space 46 is smaller than the main space 46b of the upper recovery space 46. Infiltration can be reduced. Further, since the lower end of the shielding rib 45 is located above the prescribed washing water level 47, foreign matter or oil washed away from the tableware 28 does not accumulate in the collection space 46, and the washing water can be collected. There is no hindrance. Moreover, generation | occurrence | production of a strange odor etc. can be suppressed.

Furthermore, since the lower end of the shielding rib 45 is positioned below the injection hole 48 of the cleaning nozzle 32, the cleaning water sprayed from the injection hole 48 is reliably blocked by the shielding rib 45. Therefore, only the cleaning water with low momentum that falls from above the cleaning tank 29 comes into contact with the inlet 46 a of the recovery space 46, and the water flow having pressure does not reach the groove 43.

The cleaning water sprayed from the spray holes 48 hits the tableware 28 and falls as it is, or flows down along the side surface of the cleaning tank member 40 and flows to the lower end of the shielding rib 45. At this time, since the tip of the shielding rib 45 is located on the inner side of the side wall portion 49 of the bottom component member 41 over the entire circumference of the cleaning tank 29, the cleaning water flowing down along the shielding rib 45 from above is the recovery space 46. The liquid flows into the bottom surface of the bottom component member 41 without entering the bottom.

Moreover, since the lower end of the shielding rib 45 is located above the predetermined washing water level 47, foreign matter or oil washed away from the tableware 28 does not accumulate in the recovery space 46, and the washing water Does not interfere with recovery. Moreover, generation | occurrence | production of a strange odor etc. can be suppressed.

Further, since the shielding ribs 45 on both side surfaces of the cleaning tank 29 are provided without a step from the inner wall 40a of the cleaning tank member 40, there is no unnecessary step, the recovery rate of the cleaning water does not decrease, and the design is good. Is also improved.

In addition, since the bottom component member 41 and the cleaning tank member 40 are joined together, the seal portion 54 and the recovery space 46 that seal the joint are formed, so that the joining operation and the seal portion 54 and the recovery space 46 can be reduced. Formation is simplified and assembly workability is improved.

Even in such a configuration, when the gap between the collection spaces 46 (main space 46b) is formed, the cleaning water that has touched the inlet 46a of the collection space 46 is sucked up by capillary action and reaches the groove 43. Sometimes it ends up. In this case, according to the present invention, the recovery space 46 between the shielding rib 45 and the groove 43 is provided with a gap that does not allow the cleaning water to be sucked up by capillary action. Even if contact is made, the cleaning water is not sucked into the groove 43.

As described above, according to the present invention, the cleaning water sprayed from the cleaning nozzle 32 does not reach the groove 43, and even if the second seal member 42 is not provided, the sealing performance of the joint is maintained. To do. However, since the steam is generated when the cleaning water is heated, condensation may occur near the groove 43, and a small amount of water may come out of the cleaning tank 29. For this purpose, in the present invention, the second seal member 42 is arranged on the outer upper side of the recovery space 46. Further, since the water does not go out even without the second seal member 42, the deterioration of the second seal member 42 due to long-term use, and vibration and force due to the pulling operation are repeatedly applied to the groove 43. Even if the sealing performance is lowered due to this, the sealing performance at the joint can be maintained.

Further, since the recovery space 46 is configured to be communicated over the entire circumference of the cleaning tank 29, when the cleaning tank 29 is pulled out vigorously, the cleaning water reaches above the predetermined cleaning water level 47, and reaches the recovery space 46. Even if the cleaning water permeates, there is a space for the cleaning water to escape in the lateral direction due to the communicating recovery space 46, so that the cleaning water reaching the groove 43 can be greatly reduced. Of course, even when the cleaning water reaches the groove 43, it is sealed with the second seal member 42, so that the sealing performance at the joint can be maintained.

As described above, the dishwasher according to the present embodiment includes the seal portion 54 for water-sealing the joint portion formed by the upper end portion of the bottom component member 41 and the lower end portion of the washing tank member 40, and the seal portion 54. The cleaning tank member 40 is provided with a shielding rib 45 on the inner side of the sealing portion 54, and a recovery space 46 is provided between the sealing portion 54 and the shielding rib 45. Accordingly, the cleaning water does not reach the seal portion 54 in normal use, and even when the seal performance of the second seal member 42 is deteriorated during the drawing operation or long-term use, the seal performance at the joint portion is reduced. Can be maintained. Further, if the recovery space 46 prevents the cleaning water from rising due to capillary action and reaching the seal portion 54, the sealing performance can be maintained for a longer time.

In addition, as in the case of a washing tub of a conventional dishwasher, when the tableware basket support portion 53 is formed integrally with the bottom component member 41 and rises upward, the tableware basket support portion 53 and the shielding rib 45 are interposed between them. A gap opened upward is generated, and the sprayed cleaning water easily enters the recovery space 46 from the gap through the inlet 46a. However, in the present embodiment, the tableware basket support portion 53 includes a support portion lower portion 53a provided on the bottom component member 41, and a support portion upper portion 53b provided on the cleaning tank member 40 so as to face the upper portion of the support portion lower portion 53a. And the height position of the divided surface is substantially the same as the lower end of the shielding rib 45 of the cleaning tank member 40, so that the support lower part 53a provided on the bottom component member 41 and the cleaning tank member 40 is formed in a substantially horizontal direction with the support portion upper portion 53b, so that it is difficult for the washing water sprayed into this gap to enter, and the entered washing water drops on the washing tank 29 side. The washing water can be prevented from flowing into the collection space 46 from the tableware basket support portion 53.

Further, in the present embodiment, the rail receiving portions 50 that support the weight of the cleaning tank 29 are configured on both side surfaces of the bottom component member 41 that is the lower member of the cleaning tank 29 that is configured to be vertically joined. The weight of the cleaning tank 29 and other parts is not applied in the direction in which the seal portion 54 is pulled away, and the sealing performance of the second seal member 42 can be maintained for a long time.

Moreover, in this Embodiment, since the bottom part component member 41 mounted most electrical components and mechanism parts and unitized, the part above the seal part 54 of the washing tank member 40 can be enlarged and reduced in size. Even if a single bottom component 41 is used, since washing tanks having different capacities can be obtained, production of dishwashers having different washing tank capacities can be facilitated, and manufacturing efficiency can be improved. Can be improved.

In the present embodiment, the dishwasher has been described in which only the rotatable washing nozzle 32 is provided on the inner bottom of the washing tank 29. However, for example, another washing nozzle is provided on the inner side of the washing tank 29. Even if it exists, the effect by this invention can be acquired and it is not excluded from this invention.

As described above, the dishwasher according to the present invention is a built-in type dishwasher, and maintains the sealing performance of the joint portion of the cleaning tank even when the sealing performance of the sealing member deteriorates during the drawer operation or due to long-term use. Therefore, it is useful as a dishwasher or the like for washing dishes by jetting washing water.

27 Case (Dishwasher body)
DESCRIPTION OF SYMBOLS 29 Cleaning tank 30 Rail 32 Cleaning nozzle 40 Cleaning tank member 41 Bottom part member 42 2nd sealing member 43 Groove part 44 Sealing rib 45 Shielding rib 46 Recovery space 47 Cleaning water level 48 Injection hole 50 Rail receiving part 51 Convex part 52 Engagement part 52a Engagement hole 53 tableware basket support part 54 seal part

Claims

A dishwasher comprising: a housing having an opening; a rail receiving portion that is provided in the housing and receives a movable rail portion of a rail; and a washing tank that is drawn from the opening by the movable rail portion of the rail. There,
The cleaning tank includes a bottom constituent member that forms a bottom portion of the cleaning tank, a cleaning tank member that forms a side surface of the cleaning tank, an upper end portion of the bottom constituent member, and a lower end portion of the cleaning tank member. A dishwasher provided with a seal portion that seals the joint portion with water, wherein the rail receiving portion is provided on the bottom component member.
2. The dishwasher according to claim 1, wherein the rail receiving portion is formed so as to cover the movable rail portion of the rail from above and outside, and is positioned below the seal portion.
The fixed rail portion of the rail has a movable mechanism portion and a protruding portion on the outer side of the movable mechanism portion, and further formed in a cross-sectional shape with the outer portion being one step lower groove portion, and the outer end of the rail receiving portion is The dishwasher according to claim 1, wherein the dishwasher is located directly above or outside the raised portion.
An outer convex portion is provided on the outer surface of the bottom component member, an engagement hole is provided in the cleaning tank member in accordance with the position of the convex portion, and the engagement hole and the convex portion are engaged with each other. The dishwasher according to claim 1, wherein a joint portion that joins the bottom component member to the cleaning tank member is provided, and a seal portion that seals the joint portion is formed.