JP3548087B2 - dishwasher - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dishwasher for automatically washing dishes.
[0002]
[Prior art]
For example, a household dishwasher has a cabinet that forms an outer shape, and a washing room for washing dishes such as dishes is defined inside the cabinet. At the bottom of the washing chamber, a nozzle for injecting washing water toward the dishes set in the washing chamber is arranged, and the fountain flow from this nozzle removes dirt attached to the dishes. It has become.
[0003]
In such a dishwasher, the washing water sprayed from the nozzles and the washing water sprayed from the nozzles and bounced off by the dishes adhere to the inner wall surface of the washing room, resulting in scales on the inner wall surface of the washing room. It's easy to do. In view of the above, some dishwashers for home use have been provided in which a washing room is defined by an all stainless steel tank. If the washing chamber is formed by partitioning it with an all stainless steel tank, it is possible to suppress the occurrence of water scale and the like on the inner wall surface of the washing chamber (tank).
[0004]
[Problems to be solved by the invention]
However, since stainless steel is a relatively expensive material, an all stainless steel tank is more expensive than a tank formed of a resin material. There is also a problem that the sound (water splashing sound) of the washing water injected from the nozzle bounced back on the inner wall surface of the washing chamber is larger than in the case where a tank formed of a resin material is used.
[0005]
Therefore, an object of the present invention is to provide a dishwasher that is excellent in hygiene and can be configured relatively inexpensively.
Another object of the present invention is to provide a dishwasher having a structure capable of further suppressing generation of water splashing noise.
[0006]
Means for Solving the Problems and Effects of the Invention
The invention according to claim 1 for achieving the above object is a dishwasher for washing dishes by spraying washing water, the cabinet having an outer shape, and housed in the cabinet, using a synthetic resin material. Including a resin tank integrally formed and a stainless steel panel attached to the inner surface of the upper part of the tank of the resin tank, a space surrounded by the resin tank and the stainless steel panel is used for cleaning tableware for accommodating tableware to be cleaned. A dishwasher characterized by being a room.
[0007]
According to the present invention, by forming a part of the washing room with a stainless steel panel, it is possible to suppress the occurrence of scale in this part, and to provide a dishwasher excellent in hygiene. Moreover, since only a part of the washing room is defined by stainless steel panels, the dishwasher can be configured at a lower cost than when the washing room is defined by all stainless steel tanks.
The invention according to claim 2, wherein the stainless steel panel is formed by using a stainless steel plate in a shape corresponding to an inner surface of an upper portion of the resin tank, and a side surface and a rear surface of the stainless steel panel are formed from inside. The dishwasher according to claim 1, wherein the dishwasher is formed by being pressed and deformed so as to be depressed one step outside of a surrounding portion to form a seating portion.
[0008]
According to the present invention, since the seating portion makes surface contact with the inner surface of the resin tank, it is possible to suppress water splashing noise generated when the washing water hits the stainless steel panel and bounces off. Further, the strength of the stainless steel panel can be increased. In addition, since the pusher can be easily formed, there is no danger that the cost of the dishwasher is increased by forming the pusher.
[0009]
The invention according to claim 3, wherein the stainless steel panel has a side surface, a top surface and a rear surface formed of a stainless steel plate, and a stainless steel plate forming the side surface and the top surface of the stainless steel panel and a stainless steel forming the rear surface. The plate is overlapped with the vicinity of each other's edge, the overlapped portion is folded back so that one of the stainless steel plates is wound inside, and the folded portion is joined by caulking. Item 4. A dishwasher according to item 1 or 2.
[0010]
ADVANTAGE OF THE INVENTION According to this invention, the watertightness in the connection part of a stainless steel plate can be ensured, and it can prevent that washing water leaks out from this connection part.
The invention according to claim 4 is the dishwasher according to claim 3, wherein the folded portion is provided outside the stainless steel panel.
According to the present invention, since the folded portion is provided outside the stainless steel panel, the capacity in the stainless steel panel is not reduced by employing the joining method according to the third aspect.
[0011]
According to a fifth aspect of the present invention, in the dishwasher according to the fourth aspect, a groove capable of accommodating the folded portion is formed in a portion of the inner surface of the resin tank opposite to the folded portion. It is.
For example, if the stainless steel panel has a push portion, and if the folded portion is formed so as to protrude significantly from the outer surface of the stainless steel panel due to processing errors, the outer surface of the push portion becomes a resin tank. There is a possibility that the inner surface may not be in good contact with the surface.
[0012]
On the other hand, according to the invention of claim 5, even if the folded portion is formed so as to protrude greatly from the outer surface of the stainless steel panel due to a processing error or the like, the protruding folded portion is formed on the inner surface of the resin tank. Therefore, the outer surface of the pusher can be reliably brought into surface contact with the inner surface of the resin tank.
In the invention according to claim 6, the stainless steel panel has a side surface, a top surface, and a rear surface formed of a stainless steel plate, and the stainless steel panel is inserted into the resin tank on the top surface of the stainless steel panel. The dishwasher according to any one of claims 1 to 5, wherein a guide surface for guiding the stainless steel panel to a predetermined mounting position when performing the operation is formed.
[0013]
According to the present invention, when the stainless steel panel is mounted in the resin tank, the stainless steel panel can be successfully guided to a predetermined mounting position.
The invention according to claim 7, wherein the stainless steel panel is formed using a stainless steel plate in a shape corresponding to the inner surface of the upper portion of the tank of the resin tank . 2. The dishwasher according to claim 1, wherein the dishwasher is folded outward and is tightly bent.
[0014]
According to the present invention, even when burrs or the like are formed on the lower edge of the stainless steel panel, there is no risk of injury to a hand or the like when cleaning the cleaning room.
The invention according to claim 8 is characterized in that the resin tank has an opening for taking in and out the dishes in and out of the washing chamber, and packing is attached along an upper end edge and both side edges of the opening, The stainless steel panel is formed by using a stainless steel plate in a shape corresponding to the inner surface of the upper portion of the tank of the resin tank, and the front edge of the stainless steel panel is attached in a state of being in close contact with the packing. The dishwasher according to claim 1, wherein
[0015]
According to the present invention, since the space between the resin tank and the stainless steel panel is sealed with the packing, water can be prevented from entering between the resin tank and the stainless steel panel. Therefore, it is possible to prevent the occurrence of water scale or the like in the gap between the resin tank and the stainless steel panel.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a sectional view showing a configuration of a dishwasher according to one embodiment of the present invention. This dishwasher is a thin dishwasher having a width in the front-rear direction (horizontal direction in FIG. 1) when viewed from the front, which is shorter than the width in the left-right direction (vertical direction to the paper surface of FIG. 1). The cabinet includes a cabinet 1 forming an outer shape, a resin tank 2 housed in the cabinet 1, and a stainless steel panel 3 attached so as to cover an upper inner wall surface of the resin tank 2.
[0017]
The cabinet 1 has an opening 11 formed in the upper front part thereof. The upper door 4 and the lower door 5 are provided in connection with the opening 11, and the opening 11 can be opened and closed by the upper door 4 and the lower door 5. That is, the upper door 4 and the lower door 5 are rotatably attached to rotating shafts 41 and 51 provided on the front side of the upper end edge and the lower end edge of the opening 11, respectively, and are substantially parallel to the front surface of the cabinet 1. The opening 11 can be closed in an adjacent state in a simple plane. Then, from that state, the opening 11 can be opened by flipping the upper door 4 upward and pulling down the lower door 5.
[0018]
The space 6 defined by the lower portion of the resin tank 2 and the stainless steel panel 3 in the resin tank 2 is a washing room for washing dishes such as dishes and bowls. The washing chamber 6 is supplied with washing water from a water supply facility (not shown), and a pipe, a valve, and the like (not shown) for the washing water are provided below the resin tank 2. The cleaning water supplied to the cleaning chamber 6 is collected in a water collecting portion 2a formed one step lower on the bottom surface of the resin tank 2, and the cleaning water collected in the water collecting portion 2a is supplied to the resin tank 2. The water is pumped through a water sampling pipe 8 by a washing pump 7 arranged below the cleaning pump 2. The cleaning water pumped out by the cleaning pump 7 is sent through a water pipe 9 to an arm type nozzle 10 disposed on the bottom surface of the resin tank 2. A plurality of injection ports (not shown) are formed on the upper surface of the nozzle 10, and when the cleaning water is pressure-fed to the nozzle 10, the cleaning water fed is jetted from the injection port. At this time, the nozzle 10 rotates by the reaction force of the washing water injected from the injection port, and the fountain flow is evenly blown on the tableware accommodated in the washing chamber 6. Thereby, the dirt adhering to the tableware is removed, and the tableware is washed evenly and evenly.
[0019]
The dishes to be washed are arranged in a dedicated dish basket (not shown) formed by bending or welding a plurality of stainless steel wires, for example. The car is housed in the cleaning room 6.
FIG. 2 is a front view of the resin tank 2 and the stainless steel panel 3. Referring to FIG. 2 and FIG. 1 described above, resin tank 2 includes a tank lower part 21 and a tank upper part 22 formed by using a synthetic resin material such as polypropylene. The tank lower part 21 is formed so as to be recessed downward so as to be able to store water (wash water) used for washing dishes, and the upper edge 211 of the front surface thereof is near the lower edge of the opening 11 of the cabinet 1. It is arranged to be located. The tank upper portion 22 includes left and right side surfaces 221 and 222 connected to upper right and left side surfaces of the tank lower portion 21, a rear surface 223 connected to a rear upper end edge of the tank lower portion 21, and these left and right side surfaces, respectively. And a top surface 224 provided to connect the upper edge of the rear surface. The front edge 225 of the tank upper portion 22 (the front edge of the left and right side surfaces 221 and 222 and the front edge of the top surface 224) are located near the opening 11 of the cabinet 1, whereby the internal space of the resin tank 2 is reduced. , Is communicated with the opening 11 of the cabinet 1 through an opening portion surrounded by an upper edge 211 on the front surface of the tank lower portion 21 and a front edge 225 of the tank upper portion 22.
[0020]
A packing 25 is attached to the front edge 225 of the tank upper part 22 along the front edge 225. When the upper door 4 and the lower door 5 are closed, the inner surfaces of the upper door 4 and the lower door 5 are closed. In close contact with the packing 25, cleaning water and the like do not leak from the gap between the resin tank 2 (stainless steel panel 3) and the upper door 4 and the lower door 5.
The stainless steel panel 3 is formed using a stainless steel thin plate in a shape corresponding to the inner surface of the tank upper part 22 of the resin tank 2, and is attached so as to cover almost the entire inner surface of the tank upper part 22. More specifically, the stainless steel panel 3 has left and right side surfaces 31 and 32 facing the left and right side surfaces 221 and 222, a rear surface 223 and a top surface 224 of the tank upper part 22, a rear surface 33 and a top surface 34, respectively. . The left and right side surfaces 31, 32 and the top surface 34 are formed by bending a single stainless plate 35 that is long in one direction into a substantially U-shaped cross section. Further, a rear surface 33 is formed by joining a stainless steel plate 36 having a rectangular shape so as to connect the left and right side surfaces 31, 32 and the rear end edge of the top surface 34 to the stainless plate 35 bent in a substantially U-shaped cross section. Have been.
[0021]
The stainless steel plate 35 having a substantially U-shaped cross section and the stainless steel plate 36 forming the rear surface 33 are connected by an inner surface near the edge of the stainless steel plate 35 and an inner surface near the edge of the stainless steel plate 36, as shown in cross section in FIG. Are overlapped with each other, the overlapped portion 37 is folded back so that one of the stainless steel plates 35, 36 is wound inside, and the folded portion is crimped. Thereby, the watertightness of the joint between the stainless steel plate 35 and the stainless steel plate 36 can be ensured, and the leakage of the cleaning water from this joint can be prevented. Further, since the overlapping portion 37 is formed outside the stainless steel panel 3, the capacity in the stainless steel panel 3 is not reduced by adopting the above-described joining method.
[0022]
Pushing portions 311 and 321 are formed on the left and right side surfaces 31 and 32 in relatively large regions other than the respective peripheral portions. The push portions 311 and 321 are formed by depressing the left and right side surfaces 31 and 32 from the inside with a corresponding shape for the push, so that the push portions 311 and 321 are depressed one step outward from the surrounding portions. When the stainless steel panel 3 is installed in the resin tank 2, the outer surfaces of the stainless steel panel 3 are in surface contact with the left and right side surfaces 221 and 222 of the tank upper part 22. Thereby, the vibration when the washing water jetted from the nozzle 10 (see FIG. 1) hits the left and right side surfaces 31 and 32 of the stainless steel panel 3 and is bounced back can be suppressed, and the water splashing sound generated at this time can be suppressed. Can be.
[0023]
Here, if the left and right side surfaces 221 and 222 and the rear surface 223 of the tank upper part 22 are orthogonal to each other and the respective surfaces 221, 222 and 223 are flat, it is necessary to form the above-described pusher portions 311 and 321. There is no. However, the left and right side surfaces 221 and 222 of the tank upper portion 22 are formed so as to be gradually narrowed from the near side to the far side so that the mold can be successfully removed from the upper portion 22 of the tank during resin molding. Therefore, in order for the left and right side surfaces 31 and 32 of the stainless steel panel 3 to make surface contact with the left and right side surfaces 221 and 222 of the tank upper part 22, respectively, the left and right both side surfaces 31 and 32 of the stainless steel panel 3 are also from the near side. It must be formed so as to be narrowed toward the back side, and such processing is complicated and expensive. On the other hand, according to the configuration of this embodiment, the pusher portions 311 and 321 can be formed relatively easily, so that the manufacturing cost of the stainless steel panel 3 does not increase significantly.
[0024]
Moreover, since the crimped overlapping portion 37 projects rearward (rear side) from the rear surface 33, if the rear surface 33 of the stainless steel panel 3 is formed to be flat, the rear surface 33 of the stainless steel panel 3 is made of resin. It does not contact the rear surface 223 of the tank 2. Therefore, in this embodiment, the rear surface 33 of the stainless steel panel 3 is provided with a pusher 331 protruding rearward. A groove 226 is formed on the rear surface 223 of the tank upper part 22 at a position corresponding to the overlapping portion 37. With this configuration, in a state where the stainless steel panel 3 is mounted in the resin tank 2, the outer surface of the push portion 331 surely comes into surface contact with the rear surface 223 of the tank upper part 22, and as a result, the rear surface 33 of the stainless steel panel 3 Since the vibration can be suppressed, the water splashing sound generated when the cleaning water hits the rear surface 33 of the stainless steel panel 3 and is bounced back can be suppressed to be small. Even if the overlapped portion 37 is formed so as to protrude greatly to the rear side due to an error in processing or the like, the projected overlapped portion 37 fits into the groove 226, and thus the outer surface of the seating portion 331 is formed. Can be brought into surface contact with the rear surface 223 of the tank upper part 22.
[0025]
As shown in FIG. 4, the lower edges of the left and right side surfaces 31, 32 and the rear surface 33 of the stainless steel panel 3 are bent outward and are in close contact with the outer surface. Thus, even if burrs are formed on the left and right side surfaces 31, 32 and the lower edge of the rear surface 33 of the stainless steel panel 3, the user of the dishwasher may be injured when cleaning the inside of the washing room 6. It is not. As shown in FIG. 4, the resin tank 2 has ribs 23 formed along the left and right side surfaces 221 and 222 of the tank upper portion 22. The lower edges of the left and right side surfaces 31, 32 of the stainless steel panel 3 are fitted in the gap. As a result, it is possible to prevent washing water from entering into the gap from between the lower end edges of the left and right side faces 31 and 32 of the stainless steel panel 3 and the left and right side faces 221 and 222 of the tank upper part 22. It is possible to prevent the occurrence of such a problem.
[0026]
Further, as shown in FIG. 1, a recess 341 that is recessed downward is formed in a relatively large area other than the peripheral portion on the top surface 34 of the stainless steel panel 3. The bottom surface of the concave portion 341 is connected to the peripheral portion of the top surface 34 (a portion of the top surface 34 outside the concave portion 341) by an inclined surface, and particularly connects the bottom surface of the concave portion 341 and the front edge of the top surface 34. The inclined surface 342 serves as a guide surface for guiding the stainless steel panel 3 to a predetermined mounting position in the resin tank 2 when the stainless steel panel 3 is mounted on the resin tank 2.
[0027]
In addition, an anti-vibration plate (not shown) having a thickness that does not cover the guide surface 342 is disposed in the concave portion 341. Thereby, the vibration when the washing water injected from the nozzle 10 (see FIG. 1) hits the top surface 34 of the stainless steel panel 3 and rebounds can be suppressed, and the water splashing noise generated at this time can be suppressed. Note that the earthquake-proof plate can be made of, for example, a rubber material.
FIG. 5 and FIG. 6 are cross-sectional views for describing attachment of the stainless steel panel 3 to the resin tank 2 (the inner surface of the tank upper portion 22). When attaching the stainless steel panel 3 to the resin tank 2, first, as shown in FIG. 5, the stainless steel panel 3 is placed with the upper surface of the top surface 34 of the stainless steel panel 3 along the top surface 224 of the tank upper part 22. It is inserted into the resin tank 2. Then, the front edge 225 of the top surface 224 of the tank upper part 22 abuts on the inclined surface 342 formed on the top surface 34 of the stainless steel panel 3, and when the stainless steel panel 3 is further inserted, the tank upper part 22 on the inclined surface 342 , The stainless steel panel 3 is gradually guided downward.
[0028]
As shown in FIG. 6, when the stainless steel panel 3 is completely inserted into the resin tank 2, the lower edges of the left and right sides 31 and 32 of the stainless steel panel 3 are in contact with the ribs 23 of the resin tank 2 and the left and right sides. The stainless steel panel 3 is located at a predetermined mounting position in the resin tank 2 by fitting into the gap (see FIG. 4) between the stainless steel panel 221 and 222. In this state, the front edge of the stainless steel panel 3 is in close contact with the packing 25 disposed along the front edge 225 of the tank upper part 22 of the resin tank 2, thereby cleaning between the resin tank 2 and the stainless steel panel 3. Water is prevented from entering. Thereafter, for example, by fixing the stainless steel panel 3 to the tank upper part 22 with a screw, the attachment of the stainless steel panel 3 to the resin tank 2 is completed.
[0029]
As described above, according to this embodiment, the washing chamber 6 for washing dishes is defined by the stainless steel panel 3 attached to the inner surface of the tank upper part 22 of the resin tank 2 and the lower part of the resin tank 2. . Therefore, it is possible to prevent the generation of water scale and the like on the upper inner wall surface of the washing chamber 6 to which a large amount of the washing water sprayed from the nozzle 10 and the washing water rebounded from the tableware adheres. Can be provided. Moreover, since only a part of the washing chamber 6 is defined by the stainless steel panel 3, the dishwasher can be configured at a lower cost as compared with the case where the washing chamber 6 is defined by the all stainless steel tank. it can.
[0030]
Pushing portions 311, 321, and 331 are formed on the left and right side surfaces 31 and 32 and the rear surface 33 of the stainless steel panel 3, respectively. The left and right side surfaces 221 and 222 and the rear surface 223 are in surface contact. Thereby, the water splashing sound generated when the washing water hits the stainless steel panel 3 and bounces off can be suppressed. In addition, the strength of the left and right side surfaces 31, 32 and the rear surface 33 of the stainless steel panel 3 can be increased. In addition, since the pushers 311, 321, and 331 can be easily formed, the cost of the dishwasher does not increase by forming such pushers 311, 321, and 331.
[0031]
Further, in this embodiment, since the vibration-proof plate is disposed in the concave portion 341 formed in the top surface 34 of the stainless steel panel 3, water splashing noise generated on the top surface 34 of the stainless steel panel 3 can be suppressed.
Although the embodiment of the present invention has been described above, the present invention can be embodied in other forms. For example, in the above-described embodiment, a thin dishwasher has been described as an example, but the present invention may be applied to a dishwasher having a substantially square outer shape in plan view.
[0032]
Further, in the above-described embodiment, the door for opening and closing the opening 11 of the cabinet 1 is configured by the two upper doors 4 and the lower door 5, but, for example, along the edge of the opening 11 It may be configured with a single door that opens and closes the opening 11 by rotating about a provided rotation axis.
In addition, various design changes can be made within the scope of the matters described in the claims.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a configuration of a dishwasher according to an embodiment of the present invention.
FIG. 2 is a front view of a resin tank and a stainless steel panel.
FIG. 3 is a cross-sectional view illustrating a configuration of a joining portion between a top surface and a rear surface of the stainless steel panel.
FIG. 4 is a sectional view showing a configuration of a lower edge of the stainless steel panel.
FIG. 5 is a cross-sectional view showing a state in which a stainless steel panel is being mounted on a resin tank.
FIG. 6 is a sectional view showing a state where a stainless steel panel is attached to a resin tank.
[Explanation of symbols]
2 Resin tank 21 Tank lower part 22 Tank upper part (part where resin tank washing water is applied)
226 groove 3 stainless steel panel 31, 32 side surface 33 rear surface 34 top surface 311, 321, 331 seating pressing part 342 inclined surface 35, 36 stainless steel plate 6 washing room

Claims (8)

A dishwasher for washing dishes by spraying washing water,
A cabinet forming an outer shape;
A resin tank housed in a cabinet and integrally formed using a synthetic resin material,
A stainless steel panel attached to the inner surface of the upper part of the resin tank,
A dishwasher, wherein a space surrounded by the resin tank and the stainless steel panel is a washing room for accommodating dishes to be washed. The stainless steel panel is formed using a stainless steel plate into a shape corresponding to the inner surface of the upper portion of the tank of the resin tank,
The dishwasher according to claim 1, wherein the side and rear surfaces of the stainless steel panel are deformed by being pressed from the inside so as to be depressed one step outside from the surrounding portion to form a seating portion. The stainless steel panel has a side surface formed of a stainless steel plate, a top surface and a rear surface,
The stainless steel plate forming the side surface and the top surface of the stainless steel panel and the stainless steel plate forming the rear surface are overlapped with each other near the edge thereof, and this overlapped portion is folded back so that one stainless steel plate is wound inside. 3. The dishwasher according to claim 1, wherein said folded portion is joined by caulking. The dishwasher according to claim 3, wherein the folded portion is provided outside the stainless steel panel. The dishwasher according to claim 4, wherein a groove capable of accommodating the folded portion is formed in a portion facing the folded portion on an inner surface of the resin tank. The stainless steel panel has a side surface formed of a stainless steel plate, a top surface and a rear surface,
A guide surface for guiding the stainless steel panel to a predetermined mounting position when the stainless steel panel is inserted into the resin tank is formed on a top surface of the stainless steel panel. The dishwasher according to any one of 1 to 5. The stainless steel panel is formed using a stainless steel plate into a shape corresponding to the inner surface of the upper portion of the tank of the resin tank,
The dishwasher according to claim 1, wherein lower end edges of a side surface and a rear surface of the stainless steel panel are folded outward and bent tightly. In the resin tank, an opening for taking in and out tableware into and out of the washing chamber is formed, and packing is attached along an upper end edge and both side edges of the opening,
The stainless steel panel is formed by using a stainless steel plate in a shape corresponding to the inner surface of the upper portion of the tank of the resin tank, and the front edge of the stainless steel panel is attached in a state of being in close contact with the packing. The dishwasher according to claim 1, wherein: