JP3021981B2 - 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 dishwasher for washing dishes.

[0002]

2. Description of the Related Art A conventional dishwasher will be described below.

Conventionally, this type of dishwasher has a configuration as shown in FIG. That is, the washing tank 2 is provided inside the main body 1, and water or hot water is supplied into the washing tank 2 by the water supply mechanism 3. When the device is driven, the washing water is
Attached to the pump chamber communicating with the other side of the drain hole 4,
The inside of the washing tank 2 is circulated by a washing pump 6 driven by a motor 5. That is, this circulation is performed by washing water being sucked into the washing pump 6 from the drain hole 4, and the washing pump 6 washing the washing nozzle 7 at the bottom of the washing tank 2.
, Is sprayed from here, is washed, and then returns to the drain hole 4 again. A heater 8 for heating cleaning water is provided between the cleaning nozzle 7 and the bottom of the cleaning tank 2. In addition, above the cleaning nozzle 7,
A tableware basket 9 is provided, which is designed so that the dishes can be arranged neatly and the washing water can be sprayed effectively on the dishes. The tableware basket 9 is provided with a plurality of moving rollers,
It can be pulled out to the outside of the front. In addition, a door 10 that can be opened and closed is attached to the front part of the washing tank 2. Further, a drain pump 11 is provided for discharging the washing water out of the machine, and a joint 12 is provided on the way.
The washing water is discharged to the outside of the machine through a drain hose 13 provided with.

Here, the drainage will be described. In this type of dishwasher, the tip of a drain hose outside the machine is directly connected to a drain pipe or discharged into a sink of a sink. Therefore, a joint 12 is provided in the drainage passage, and a siphon prevention hole 12-a is provided therein to prevent the backflow of sewage generated by the siphon phenomenon and the natural discharge of water in the machine. In addition, a portion that is open to the atmosphere is provided.

If the siphon prevention hole 12-a is not provided, the air in the drainage pump 11 cannot escape well if the resistance is large due to the fact that the hose is sometimes wound halfway. The drainage pump 11 may be in a state of air spillage, and the pump may not be able to perform its function properly, resulting in poor drainage.

As described above, the siphon preventing hole 12-a is provided.
Has become very important for dishwashers.

[0007] In many dishwashers, there is only one siphon-preventing hole 12-a. However, if the siphon-preventing hole 12-a is clogged, water is applied to the body as described above. In some cases, a plurality of holes are provided to prevent the siphon-preventing hole 12-a from being clogged. Conventionally, the size of these holes is constant, or the holes are connected directly from the joint 12 into the cleaning tank 2, or a hose is inserted into a part attached to the cleaning tank 2 by a connection hose. Each hole is open to the atmosphere.

[0008]

However, in the above-described conventional configuration, even if a plurality of holes are provided, the siphon-preventing hole 12-a having a fixed size is smaller than a single hole. The likelihood of clogging is low, but if a certain type of food debris comes in, it can clog all holes.

A plurality of siphon preventing holes 12-
In the case where a is provided and each hole is connected to an open part to the atmosphere, it is necessary to pay sufficient attention to prevent water leakage from occurring in each hole, and also increase the components and the assembly process. It will be expensive.

Further, in the case where the siphon preventing hole 12-a is opened to the atmosphere at a part attached to the cleaning tank 2 by a connection hose or the like from the joint 12 to the rear of the cleaning tank 2, Hole 12-a for preventing siphon
When it gets stuck, it is necessary to service from behind. If the dishwasher is built into the system kitchen, it must be taken out of the kitchen and serviced, which is very troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a first object of the present invention is to provide a dishwasher for preventing a siphon preventing hole 12-a from being clogged. A second object is to provide a dishwasher that is small, inexpensive, and has good serviceability.

[0012]

In order to achieve this object, a dishwasher according to the present invention comprises, as a first means, a plurality of siphon-preventing holes having different cross-sectional areas.
As second means, one of the communication portion inside the section of the cleaning tank
A plurality of holes having different products are provided.

[0013]

According to the first means, since the cross-sectional areas of the holes are different from each other, there are holes which are easily clogged with food waste of a specific size and holes which are not. Thus, the probability of all holes being clogged at the same time is very low.

[0014] Further, since the connection between the siphon prevention hole and the cleaning tank is required at only one place by the second means, there is only one place where water leaks and the structure is simple.

[0015]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

The basic structure of the dishwasher according to the present invention is the same as that shown in FIG. 3, and the same components are denoted by the same reference numerals and description thereof is omitted.

In FIG. 1, the structure of the joint 12 is the point of the present invention. The joint 12 is incorporated in a drain passage and is connected to a drain hose 13. Two holes 12-a and 12-b for preventing siphons are provided on the side surface of the drainage pipe of the joint 12. The diameter of the hole is different from A and B. Each hole is open to the atmosphere. Communication part 12 of joint 12 to cleaning tank 2
At -c, it is directly fixed to the cleaning tank 2 by the packing 14 and the nut 15. Also, a cover 16 is attached to prevent the washing water from flying toward the front of the washing tank 2 and splashing on the dishes during drainage. With this configuration, the siphon preventing hole 12-a is open to the atmosphere in the cleaning tank 2. Further, the siphon prevention hole 12-b is inserted into a suction part (not shown) attached to the cleaning tank 2 by the connection hose 17, and this is also opened to the atmosphere in the cleaning tank 2. ing.

In the dishwasher configured as described above, when a certain type of food waste or the like comes in at the time of drainage, two siphon prevention holes 12 are simultaneously formed.
-A and 12-b are not clogged. For example, when B is larger in the diameters A and B of the holes, the siphon prevention hole 12-b has a diameter that makes it easy for the rice grains to be clogged, even when the siphon prevention hole 12-b has a diameter that is easy to clog.
Means that the rice grains are too large to penetrate this hole because of their small diameter. The characteristics of the dishwasher, such as the amount of food waste discharged due to its filter and cleaning ability, are characteristic. In addition, the drainage capacity varies depending on the diameter of the hole, so the drainage capacity and the like may be determined comprehensively.

As described above, according to the present embodiment, the probability that the holes 12-a and 12-b for preventing siphon clogging at the same time can be extremely low, so that the water entering and leaving the airframe due to the siphon phenomenon can be reduced. The occurrence can be suppressed, and the occurrence of poor drainage can also be suppressed.

(Embodiment 2) A second embodiment of the present invention will be described below with reference to the drawings.

The basic structure of the dishwasher according to the present invention is the same as that shown in FIG. 3, and the same components are denoted by the same reference numerals and description thereof is omitted.

In FIG. 2, the method of fixing the joint 12 in the middle of the drainage path to the cleaning tank 2 is the same as in FIG. Here, in this embodiment, the holes 12-a and 12-
b is provided on the side surface of the joint 12 to the communication portion 12-c to the cleaning tank 2.

Therefore, in this configuration, the seal of the cleaning tank 2 is only the portion of the packing 14, and it can be said that the establishment of water leakage is small and the safety is high as compared with the configuration of FIG. In addition, there is no need for a connection hose, a hose band for the connection hose, an adhesive, etc., the configuration is simple, and the device can be manufactured at low cost.

Further, if the cover 16 is removed, the holes 12-a and 12-b for preventing siphons can be seen from the inside of the cleaning tank 2, so that even if the holes are clogged, Can be cleaned from This has the advantage that the service can be performed without taking out the dishwasher when it is built in the system kitchen.

Here, the same effect as in the first embodiment can be obtained by changing the cross-sectional area of the siphon preventing holes 12-a and 12-b as in the first embodiment. Needless to say.

As described above, according to the present embodiment, since the seal portion between the joint 12 and the cleaning tank 2 is only one communicating part with the cleaning tank 2, the establishment of water leakage is low and the structure is simple. In addition, the service is easy, and since there are a plurality of holes for preventing siphons, it is possible to reduce the probability of closing the holes as compared with the case of one.

[0027]

As is apparent from the above embodiments, the present invention can reduce the probability that siphon-preventing holes are simultaneously blocked by providing a plurality of siphon-preventing holes having different cross-sectional areas. Therefore, it is possible to realize an excellent dishwasher capable of suppressing the occurrence of water ingress and egress with respect to the body due to the siphon phenomenon and also suppressing the occurrence of poor drainage.

Further, by providing a plurality of holes inside one communicating portion into the cleaning tank, the probability of clogging of the siphon prevention hole is low, the probability of water leakage is low, the configuration is simple and inexpensive, and the service is low. A good and excellent dishwasher can be realized.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a first embodiment of a dishwasher according to the present invention.

FIG. 2 is a sectional view of a main part of a second embodiment of the dishwasher of the present invention.

FIG. 3 is a longitudinal sectional view of a conventional dishwasher.

[Explanation of symbols]

 2 Washing tank 11 Drain pump 12 Joint 12-a Siphon preventing hole 12-b Siphon preventing hole 12-c Communication part to washing tank

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 15/42

Claims (2)

(57) [Claims] 1. A washing tank for washing dishes and a drainage pump for draining washing water in the washing tank outside the machine, and the atmosphere is opened in a drainage passage from the drainage pump to the outside of the machine. Dishwasher with multiple holes with different cross-sectional areas. 2. A washing tank for washing dishes and a drainage pump for discharging washing water in the washing tank outside the machine, and a drainage passage outside the machine from the drainage pump, wherein the inside of the washing tank is provided. Dishwasher provided with a plurality of holes having different cross-sectional areas inside one communication portion to a dishwasher.