JP3011564B2 - Dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dish washer / dryer in which a dish basket is stored in a plurality of upper and lower stages.

[0002]

2. Description of the Related Art As a dishwasher of this type, a dishwasher as shown in FIG. 5 has been proposed (Japanese Patent Publication No. 52-27940). FIG. 5 is a side sectional view showing a conventional dish washer / dryer, 61 is an outer casing, 62 is a washing tank, 65 and 66 are a dish basket, 6
7, 68 denotes a nozzle, and 69 denotes a heater. An opening 63 is provided in the upper part on the front side of the outer casing 61 and the cleaning tank 62, and an upward opening door 64 is provided here.

The tableware baskets 65, 66 are provided with rollers 65a, 65b, 66a, 66b (only one side is shown in the drawing) at the lower left and right positions, respectively.
, 66a and 66b to guide rails 67a and 67b (only one side is shown in the drawing) provided on the left and right side walls of the washing tank 62 in upper and lower two stages, respectively, so that they can be moved in the front-rear direction. It is mounted. Nozzles 67 and 68 are arranged below the tableware baskets 65 and 66 so as to be rotatable at the ends of the nozzle shafts 71 and 72, respectively.

[0004] The upper nozzle 67 and the nozzle shaft 71 are attached to an upper tableware basket 65, and are integrally moved back and forth with the tableware basket 65.
When the 71 comes out of the water supply attachment 73 and moves backward, it is fitted to the water attachment. The water supply attachment 73 is configured to allow water to flow when the nozzle shaft 71 is fitted thereto, and to block water flow when the nozzle shaft 71 is extracted.

The nozzle shaft 71 is connected to a discharge port of a pump 76 via a water supply attachment 73 and a pipe 74, and the nozzle shaft 72 is connected to a discharge port of a pump 76 via a pipe 75. The suction port of the pump 76 is connected to a casing cover 62a formed at the bottom of the washing tank 62. The casing cover 62a is provided with another drain port 62c, and the drain port 62c is provided with a pipe 77.
Is connected to the suction port of the pump 78 for drainage.

Next, the operation of such a conventional dishwasher will be described. Drives the motor M ₁ of the pump 76, the nozzle shaft 72 of pressure water from the pipe 75, also supplies pipe 74, from授水attachment 73 to the nozzle axis 71, respectively the nozzle 67,6
Spray into tableware baskets 65 and 66 from 8 to wash dishes. When cleaning is finished and stops the motor M _1, and drives the motor M ₂ of the drainage pump 48 performs a draining, and drying by operating the subsequently heater 69.

The tableware is taken in and out by opening the door 64, sliding the tableware baskets 65 and 66 on the guide rails 67a and 67b, respectively, and pulling the tableware baskets 65 and 66 forward from the opening 63 to take out the tableware baskets 65 and 66. When storing the tableware baskets 65 and 66, the rollers 65a, 65b, 66a and 66b are respectively connected to the guide rails 67 in the opposite manner as described above.
a, 67b is pushed into the washing tank 62 while being placed on it.

When the number of tableware is small, the tableware is placed in the lower tableware basket 66 and the upper tableware basket 65 is taken out of the washing tank 62. This makes the upper tableware basket
Nozzle shaft 71 attached to 65 is water supply attachment 73
From the pump 76
Is supplied only to the nozzle shaft 72 and is sprayed from the nozzle 68 to the tableware basket 66 at the lower stage.

[0009]

In such a conventional dishwasher / dryer, when there are few dishes, the lower tableware basket 66 is used, and the upper tableware basket 65 is taken out from the washing tank 62. Therefore, the handling of the upper tableware basket 65 is cumbersome, and the lower tableware basket 66 is put in and out of the work in a state in which the lower back is bent, so that the work is not reduced even when the number of tableware is small. . In addition, if the number of dishes is small, the amount of water used will be reduced accordingly, but the amount of water used will be determined by the user, so the water saving effect is not sufficient, and the amount of detergent used is wasteful. was there.

The water supply attachment 73 is required to have high durability because it can be fitted to and removed from the nozzle shaft 71 every time the tableware basket 65 is put in and out, and to maintain the relative position between the nozzle shaft 71 and the water supply attachment 43. There have been problems such as strict dimensional control required in the manufacturing process. Further, since a single pump 76 is used, there is also a problem that the water injection pressure is lower when using two tableware baskets 65 and 66 than when only one tableware basket 66 is used. .

The present invention has been made in view of the above circumstances, and has as its object to reduce the number of dishes and to remove an unused dish basket out of the washing tank when using only one dish basket. Another object of the present invention is to provide a dishwasher that is economical and economical in that water can be saved by appropriately setting the amount of water used according to the number of tableware baskets used.

[0012]

According to a first aspect of the present invention, there is provided a dish washer / dryer in which a plurality of dish baskets are provided in a washing tank in an upward and downward direction, and a nozzle is opposed to each of the dish baskets. in <br/> arranged the dishwasher dryer wherein the corresponding respectively installed in each nozzle, a corresponding reservoir water into the cleaning tank
A plurality of pumps for supplying to the nozzle, the motor for driving that is also used in the pump, said a clutch interposed between one of the pump and the motor, said clutch
Act on the nozzle corresponding to the tableware basket you are using
Transmits the driving force of the motor only to the pump that supplies water
Characterized in that way the.

In the dishwasher / dryer according to the second invention, a plurality of tableware baskets are provided in the washing tank in an upward and downward direction.
Tableware basket to respectively in dishwashing drier arranged facing the nozzle, the water level in the cleaning tank is, a plurality of water level predetermined to correspond to the number of dishes basket used using
A sensor for detecting that the number of dishes basket has reached about husband <br/>'s water level is set low small that, in the sensor
Therefore, it corresponds to the number of tableware baskets used in this operation.
Stop supplying water when it is detected that
The lower the number of tableware baskets used, the less water
It is characterized by washing dishes .

[0014]

According to the first aspect of the present invention, an unused dish basket is also washed.
With the pump and motor operating in the
Depending on the product, only the nozzle facing the tableware basket used
It becomes possible to inject water. In the second invention, it enables the proper amount of water supply set according to the number of dishes basket that uses a Do Ri, this performing washing with water according to the number of dishes
Can be.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments.

(Embodiment 1) FIG. 1 is a side sectional view of a dish washer / dryer according to the present invention, and FIG. 2 is a partially enlarged sectional view showing a connecting portion between a pressurizing pump and a driving motor thereof. 1 and 2, reference numeral 1 denotes an outer casing, and 2 denotes a cleaning tank.
The front side of the outer casing 1 and the washing tank 2 is open at the upper half, and the opening 3 is provided with a door 4 having an upward opening structure. A control case CS is provided at the lower part on the front side. Inside the washing tank 2, the upper and lower two-stage tableware baskets 5,
6 are disposed below the tableware baskets 5 and 6, and disk-shaped nozzles 7 and 8 are disposed opposite to the tableware baskets 5 and 6, respectively, and a heater 9 is disposed below the nozzles 8.

At a position near the bottom front side of the washing tank 2, a funnel-shaped casing cover 2a is provided.
In addition to a drain port 2b provided at the lower end of the casing cover 2a, the casing cover 2a is connected to a suction port 11a of a pressurizing pump 11 by a pipe 12, and the pressurizing pump 14 is also connected by a pipe 13 as shown in FIG. To the suction port 14a. Pump 11
Is connected to the lower end of a nozzle shaft 18 penetrating through the bottom wall of the washing tank 2 via a pipe 15, and the discharge port of the pump 14 is connected to the nozzle shaft 16 via a pipe 19 and a cheese 20, respectively. ing.

The other end of the nozzle shaft 16 extends toward the center of the cleaning tank 2 to a position concentric with the nozzle shaft 18, and its terminal portion is curved upward. A large number of holes are provided in the peripheral wall of the end portion of the nozzle shaft 16, and the nozzle 7 is pivotally fitted so as to cover this portion, and is rotatably mounted on the nozzle shaft 16 with a cap nut 7a. A hole is also provided in the peripheral wall at the upper end of the nozzle shaft 18, and the nozzle 8 is pivotally fitted so as to cover the hole, and is rotatably mounted on the nozzle shaft 18 with a cap nut 8 a.

M ₁ is a drive motor which is used for both the pumps 11 and 14, and is provided between the bottom wall of the outer casing 1 and the washing tank 2, and its drive shaft is provided with a speed reducer (not shown). One end thereof is connected to the shaft of the impeller 11d of the pump 11 and the other end is connected to the shaft of the impeller 14d of the pump 14 via the one-way clutch 22. Motor M ₁ is located between the casing of the casing and the pump 14 of the pump 11, and is supported between the mounting plates 23, 24 provided on these casings.

[0020] The one-way clutch 22 becomes a Tsugise' state when the motor M ₁ rotates in the forward direction, of both pumps 11 and 13 impeller
11d, 14d are both rotatably driven, whereas when reversed the motor M ₁ becomes cut-off state, only the impeller 11d of the pump 11 are driven. Of course, various known clutches may be used instead of the one-way clutch 22. In this case the motor M ₁ can be selected using one of the pumps 11 and 14 only in normal rotation.

An outside air outlet 2c is opened in the rear wall of the washing tank 2 slightly above the heater 9, and this outlet 2c is provided between the outer casing 1 and the rear wall of the washing tank 2. One end of the duct 25 is connected. The other end of the duct 25 is also the outer casing 1
The cleaning tank 2 is connected to one end of a duct 27 having a blower fan 26 disposed between the rear wall and the ceiling wall. duct
The other end of 27 is connected to an outside air inlet (not shown) opened at the front of the ceiling wall of the washing tank 2. Reference numeral 2d denotes an exhaust port which is a ceiling wall of the cleaning tank 2 and is opened at a position near the front side, and is connected to an exhaust port 1a which is opened at an upper front part of the outer casing 1.

The tableware baskets 5 and 6 are formed in a hollow rectangular parallelepiped basket shape by combining wires, and the tableware basket 5 is pivotally supported by a shaft member near the left and right rear ends thereof. A pair of rollers 5a, 5b are provided, and a slide fitting 31 constituting a slide mechanism is rotatably contacted with the rollers 5a, 5b so as to be able to move back and forth in such a manner as to be sandwiched from above and below.

The slide fitting 31 has a C-shaped cross section and is formed in a rod shape having stoppers 31a, 31b at the front and rear ends, and a pair of support rolls 2f, 2g provided on the upper left and right side walls of the cleaning tank 2, respectively.
1 and can be moved forward and backward between a position shown in FIG. 1 and a position horizontally pulled out in front of the opening 3 of the washing tank 2.

On the other hand, the tableware basket 6 has a
The support plate 32 is fixed, and the lower end of the support plate 32 is supported along the left and right walls (only one side is shown in the drawings) of the cleaning tank 2 via a left and right integrated parallel link mechanism. Have been. The links 41 and 42 constituting the parallel link mechanism are pivotally connected to each other by a pin 43 at substantially the center in the longitudinal direction, and the shafts 41g, 41h and 42 are provided at the upper and lower ends thereof, respectively.
Rollers 41d, 41u, 42d, 42u are pivotally supported via g, 42h.

The roller 41u at the upper end of the link 41 constituting the parallel link mechanism is a long hole provided in the support plate 32 in the horizontal direction.
32a and the roller 42 at the upper end of the link 42.
u is pivotally fitted into a hole formed in the support plate 32. Rollers 41d and 42d provided at the lower ends of the links 41 and 42 constituting the parallel link mechanism are mounted on guide members 45 provided at the lower portions of the left and right side walls of the washing tank 2 so as to be movable in the front-rear direction. I have. The inner surface of the door 4 is also provided with a guide member 46 formed in a rod shape having a C-shaped cross section. The guide member 46 is disposed so as to be located on substantially the same straight line as the guide member 45 when the door is opened. When the tableware basket 6 is pulled forward, the links 41, 42
The lower rollers 41d and 42d are moved from the guide member 45 to the guide member.
46 to move up. Tableware basket 5,6
Are the same size, but the lower tableware basket 6 may be enlarged to increase the diameter of the pipe 15 and the nozzle shaft 18 so that water is injected from the nozzle 8 at the same pressure as the injection pressure of the nozzle 7.

Next, the operation of the first embodiment will be described. Water was fed from a water supply port (not shown) into the cleaning tank 2, after the reservoir water to a predetermined water level, driven to normally rotate the motor M _1.
The water is pressurized by the pumps 11 and 14 and supplied to the nozzles 7 and 8 from the nozzle shafts 16 and 18, respectively. I do.

On the other hand, when the number of dishes is small, the dishes are accommodated only in the lower dish basket 6. In this case drives reverse motor M _1. As a result, the pump 11 is driven, but the pump 14 does not rotate due to the action of the one-way clutch 22, and water is supplied from the nozzle shaft 18 to the nozzle 8, and the lower tableware basket 6
Injected only to In this case, since the pumps 11 and 14 are independently provided, even if only one of the pumps 11 is driven, the water injection pressure does not change.

[0028] Once the washing is finished to stop the motor M _1, to discharge the water by driving the motor M _2. In the drying step operates the heater 9, further drive the motor M ₃ of the blower fan 26. Air from outside is blown by ducts 27 and 2
The air is supplied to the heater 9 from the outlet 2c in the cleaning tank 2 through the heater 5. The air heated by the heater 9 is supplied to the tableware basket 6,5.
Exhaust port 2d provided on the ceiling wall of the washing tank 2,
It is discharged outside through 1a.

Tableware baskets 5 and 6 are put in and out as follows. When the door 4 is tilted forward to the horizontal position and opened, and the tableware basket 5 is gripped by the hand and pulled out as it is, the tableware basket 5 is pulled forward along the slide fitting 31 by the rollers 5a and 5b, and the slide fitting 31 itself is also provided. Is also slid on the support rollers 2f and 2g and pulled out forward. The tableware basket 5 can be pulled out to a position where its roller 5a hits the front stopper 31a of the slide fitting 31 and the rear stopper 31b of the slide fitting 31 hits the support roller 2g. The whole is in a state of being drawn out to the front of the cleaning tank 2.

On the other hand, when the door 4 is opened from the state shown in FIG. 1, the guide members 46 provided on the inner surface (the upper surface in the drawing) of the opened door 4 are attached to the left and right side walls of the washing tank 2. It is located on substantially the same straight line as an extension of the fixed guide member 45. If the tableware basket 6 at the lower stage is pulled out to the front side, the rollers 41d and 42 of the parallel link mechanism are kept in a contracted state.
d moves inside the guide member 45, further moves inside the guide member 46, and is pulled out onto the door 4. When the tableware basket 6 is slightly lifted in this state, the parallel link mechanism is automatically raised by the action of the tension spring 44 against the gravity of the tableware basket 6 and is pulled up to substantially the same height as the upper tableware basket 5. It will be.

When the lower tableware basket 6 is stored in the washing tank 2, the above operation may be performed in the reverse order. When the lower tableware basket 6 is pushed down to a predetermined height, the tension spring 44 changes the point of action and the tension is applied. The force of the spring 44 to raise the parallel link mechanism falls below the gravitational force of the tableware basket 6, and the parallel link mechanism automatically contracts. In this state, if the lower tableware basket 6 is pushed toward the washing tank 2 side, the link 4 constituting the parallel link mechanism is formed.
1, 42 rollers 41d, 42d are guide members 45, 4
6 and is pushed into the cleaning tank 2. In the first embodiment, the tableware basket used in accordance with the number of tableware can be reduced to six tableware baskets at the lower stage, and the amount of water used can be reduced accordingly, and water, electricity, and washing amounts can be reduced. I can do it. Moreover, since the tableware basket 6 is provided with a slide mechanism and an elevating mechanism, the tableware basket 6 is moved upward for easy work, so that the tableware can be easily taken in and out.

(Embodiment 2) In this embodiment 2, when the number of dishes is small, washing and drying can be performed using only the tableware basket 5 in the upper stage. Figure 3 is a sectional view showing a structure of a main portion of Example 2, provided a one-way clutch 22 In the second embodiment between the shaft of the impeller 11d on the output shaft and the pump 11 of the motor M ₁ There is a configuration. Such In Example 2 when rotated forward drives the motor M ₂ is driven rotary pumps 11 and 14 are both only pump 14 when allowed reverse driven only dishes basket 5 of the upper driven Water will be sprayed from the nozzle. Other configurations are substantially the same as those in the first embodiment, and corresponding portions are denoted by the same reference numerals and description thereof will be omitted. Example 2
In this case, only the tableware basket 5 can be used in accordance with the number of tableware, and the same effect as that of the first embodiment can be obtained.

(Embodiment 3) In Embodiment 3, when the number of dishes is small and washing and drying are performed using only the upper dish basket 5, the amount of water to be used can be automatically set. FIG. 4 is a cross-sectional view illustrating a configuration of a main part of the third embodiment.
One end of a pressure pipe 51 is connected to a side wall of the casing cover 2a at the lower portion of the washing tank 2 and facing the suction port 11a of the pump 11, and the other end of the pressure pipe 51 is connected to a pressure switch 52.

The pressure switch 52 has a water amount (large water amount) when the upper and lower two-stage tableware baskets 5 and 6 are used, and a water amount when only the upper tableware basket 5 (or only the lower tableware basket) is used. (Small water amount), each of which can be detected as a water head. When the respective water levels are detected, the closing control of a water supply valve (not shown) is performed. Of course, various water level sensors may be used instead of the pressure switch 52. Other configurations are substantially the same as those in the first embodiment, and corresponding portions are denoted by the same reference numerals and description thereof will be omitted. In the third embodiment, the required amount of water can be automatically set in accordance with the number of tableware baskets 5 and 6 to be used, so that the cost of water, electricity and detergent can be greatly reduced. .

[0035]

As described above, in the first invention, there is no use
With the tableware basket for washing kept in the washing tank,
By operating the clutch with the
It becomes possible to inject water only from the facing nozzle.
Therefore, it is not used when only one tableware basket is used.
It is not necessary to take out the tableware basket out of the washing tank.
Can be reduced. In addition, the pump
Only one pump is driven because each is provided independently
However, the injection pressure of water from the nozzle does not change. Also,
In the second invention, it is possible to set an appropriate amount of water supply according to the number of tableware baskets to be used, and to supply water according to the number of tableware.
Since the washing can be carried out in a small amount, the present invention has excellent effects such as a great reduction in the amount of water supply and no troublesome operation.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a dishwasher according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a connecting portion between the two pumps shown in FIG. 1 and a motor used as the two pumps.

FIG. 3 is a partially enlarged sectional view showing a connecting portion between a pump and a motor according to another embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view showing a connecting portion between a pump and a motor according to still another embodiment of the present invention.

FIG. 5 is a side sectional view of a conventional dishwasher / dryer.

[Explanation of symbols]

 Reference Signs List 1 outer casing 2 washing tank 3 opening 4 door 5, 6 tableware basket 7, 8 nozzle 9 heater 11, 14 pump 22 one-way clutch 26 blower fan 52 pressure switch

──────────────────────────────────────────────────続 き Continued on the front page (72) Kosaku Kataoka, 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Nofumi Satsuma 2--18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-58-92336 (JP, A) JP-A-58-88964 (JP, U) JP-B-52-27940 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 15/42 A47L 15/50

Claims (2)

(57) [Claims] A plurality of tableware baskets are provided in an upper and lower direction in a washing tank, and a nozzle is paired with each of the tableware baskets.
In countercurrent arranged the dishwasher dryer wherein the corresponding respectively installed in each nozzle, the corresponding reservoir water into the cleaning tank
Comprising a plurality of pumps for supplying to the nozzle that, the motor for driving that is also used in the pump, and a clutch interposed between said one pump motor, said clutch
And the nozzle corresponding to the tableware basket you are using
Only the pump that supplies water to the pump
Dishwashing dryer is characterized in that the so that. 2. A plurality of tableware baskets are provided in an upper and lower direction in a washing tank, and a nozzle is paired with each of the tableware baskets.
In countercurrent arranged the dishwashing dryer, the water level in the cleaning tank is, the more the number of dishes basket used in a plurality of water level predetermined to correspond to the number of dishes basket that uses fewer low
A sensor for detecting that reaches each of the set are water people, food that is used in this operation by the sensor
When it is detected that the water level has reached the number of baskets
Stopping the water supply reduces the number of tableware baskets used.
A dishwasher / dryer characterized by washing dishes with an extremely small amount of water .