JP2002153407A - Dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dish washer capable of removing the residual draff of the size of about 0.1 mm which is small but affects an appearance after washing is completed and is hard to be removed by a conventional technique and easily washing a residual draff tray to which the removed residual draff is stuck. SOLUTION: In this dish washer composed of a washing vessel for housing dishes, a circulation pump and a circulation path for sucking and circulating washing water, and a discharge pump provided with plural jetting ports for jetting the washing water and provided identically with or separately from the circulation pump for sucking and discharging the washing water inside the washing vessel after washing is ended, a gas/liquid separator for separating and removing air bubbles is provided. The gas/liquid separator separates the air bubbles and liquid by rotating and passing a stream from an inflow port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residue removing mechanism in a dishwashing apparatus, which is low in noise without air clogging and which can easily clean a residue receiver.

[0002]

2. Description of the Related Art In a dishwasher, dishes are stored in a washing tank, and tap water or hot water is introduced into the washing tank to store water at the bottom of the washing tank. Then, the pump is operated to suck the water at the bottom of the washing tank, and to pump the water to the washing nozzle arranged in the washing tank, so that the washing water is jetted vigorously onto the dishes. As a result, the dirt attached to the tableware flows down together with the water. Food residues mixed in the water that has flowed down are collected by a metal mesh filter, and the water returns to the bottom of the washing tank and is circulated again for use. After the washing is completed, the washing water stored in the bottom of the washing tank is sucked by a drain pump and discharged to the outside.

[0003] In a dishwasher for washing with such a configuration, a detergent is usually dissolved in washing water and used.
As a result, bubbles are easily generated, which causes a decrease in pump performance and noise. In addition, the finer the mesh, the finer the mesh, the more finely the residue can be removed, but the finer the mesh, the more difficult it is for bubbles to escape, and the pump is more likely to generate air. However, there is a problem in that the hole diameter is about 1 mm. However, in this case, although a relatively large residue can be removed, a smaller residue is not collected and adheres to the tableware again, causing a problem that the appearance at the time of washing is not good.

[Problems to be solved by the invention]

According to the present invention, by separating air bubbles from the washing water sucked by the pump, it is possible to reduce the performance of the pump and the noise of the pump due to the air in the pump. It is an object of the present invention to provide a dishwashing apparatus which can remove a residue of about 0.1 mm or more which is difficult but has an adverse effect on the appearance of washing, and can easily wash a residue receiver to which the removed residue adheres.

[0005]

Means for Solving the Problems and Functions / Effects The invention according to the first aspect of the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a washing tank for accommodating tableware, a circulation pump and a circulation for sucking and circulating washing water. In a dishwashing apparatus comprising a passage and a plurality of injection ports for injecting the washing water, a gas-liquid separator for separating and removing bubbles is provided, and the gas-liquid separator rotates a water flow from an inflow port to flow water. This is characterized in that bubbles and liquid are separated.

According to the present invention, air bubbles can be separated from the washing water, so that the sound caused by air seepage and air bubbles can be reduced on the downstream side of the gas-liquid separation device.

Further, the invention according to claim 2 is characterized in that the gas-liquid separator is provided on the suction side of the circulation pump.

According to the present invention, since bubbles in the washing water flowing to the pump can be removed, a reduction in the performance of the pump due to the presence of air and noise can be reduced.

The invention according to claim 3 is characterized in that a residue removing filter made of a removable woven or non-woven fabric is provided between the gas-liquid separator and the flow path of the injection port.

According to the present invention, since air bubbles are removed by the gas-liquid separation device, even if a filter made of a woven or non-woven fabric is provided at the subsequent stage, there is no problem of air bleeding, and the cleaning liquid can be easily cleaned. Can be removed, and the washing water with little residue is injected from the injection port, so that it is possible to improve the washing of tableware.

[0011] The invention according to claim 4 is a tableware comprising a washing tank for accommodating tableware, a circulation pump and a circulation path for sucking and circulating washing water, and a plurality of washing nozzles for jetting the washing water. In the washing device, a solid-liquid separator for separating and removing solid-liquid is provided in the circulation path, the solid-liquid separator rotates a water flow from an inlet to flow water, and collects separated solids. The residue receiver is characterized in that it is configured to be removable.

According to the present invention, it is possible to realize a dishwashing apparatus which has no problem of air bleeding as compared with a normal mesh filter, is easy to maintain, and has good washing.

According to a fifth aspect of the present invention, the water passage portion includes a flow path forming material that forms a spiral flow path and an outer pipe that stores the flow path forming material. It is provided on the outer periphery of the forming material.

According to the present invention, the cleaning water is forcibly rotated by the flow path forming material, so that there is no restriction on the input direction of the cleaning water to the solid-liquid separator and the piping can be freely designed, and the flow path forming material can be formed. By providing a residue receiver on the outer periphery of the material,
Residue can be effectively collected by centrifugal force.

Further, the invention according to claim 6 is characterized in that the residue receiver is a woven or non-woven fabric made of an organic substance, an inorganic substance, a metal or the like.

According to the present invention, it is possible to appropriately design the size, cost, durability and the like of the residue to be collected.

The invention according to claim 7 is characterized in that it has a residue receiving detector for detecting the presence or absence of the residue receiving, and the operation is controlled by the output of the residue receiving detector.

According to the present invention, when there is no residue reception, the output of the residue reception detection unit makes it possible not to start the operation and to issue a warning to the user.

The invention according to claim 8 is characterized in that the residue receiver is configured to be detachable from the cleaning tank side.

According to the present invention, since the residue receiver can be removed from the washing tank side, the tableware can be easily taken out and cleaned when the tableware is taken in and out.

According to a ninth aspect of the present invention, in the solid-liquid separation device, the outer tube is made of a transparent member, and the residue receiver is configured to be visible from the outside.

According to the present invention, since the inside of the solid-liquid separation device can be seen, the state of the residue receiver can be visually checked, so that it is possible to prevent the use of the residue receiver without noticing that the residue is clogged, and to always clean the residue. It is possible to use the dishwasher in a good condition.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a tableware washing apparatus of the present invention, 1 is a washing tank for storing and washing dishes, 2 is a rotating blade of a circulation pump, 3 is a washing nozzle, 4 is an injection port, and a washing nozzle 3 is provided. Is provided with an injection port 4 and has a water passage to the injection port. Reference numeral 5 denotes a residue removal filter, 6 denotes a circulation pump, 7 denotes a drain pump, 8 denotes a drain pipe, 9 denotes a dish basket, and 10 denotes a gas-liquid separation device. FIG. 2 is a side view of the gas-liquid separation device, where 15 is a suction port, 16
Is a bubble blocking net supported by a support mechanism (not shown) near the outlet of the gas-liquid separation device, which blocks a bubble component separated from the liquid in the washing water and flowing near the center of the gas-liquid separation device 10. 17 is a water outlet of the circulation pump, 18
Is a suction port of the rotary blade 2 connected to the circulation pump 6, and sucks washing water discharged from the outer peripheral portion of the gas-liquid separation device 10. The operation of the present embodiment will be described. First, hot water or water is supplied from a water suction port (not shown), water is stored in the washing tank 1, and a water amount sensor (not shown) detects that a predetermined amount of water has accumulated. I do. The circulation pump 6 starts operating in response to a signal from the water amount sensor, and the washing water accumulated in the bottom of the washing tank 1 is sucked by the rotating blades 2 connected to the circulation pump 6 and sent to the washing nozzle 3 by pressure. Tableware basket 9
Water is sprayed on the tableware set in and washed. The water hitting the tableware is stored in the bottom of the washing tank 1 and recirculated by the circulation pump 6.
And is ejected from the ejection port 4 to tableware. At this time, residues such as rice grains and vegetable waste adhering to the dishes are washed away and mixed into the washing water, but are removed by the residue removing filter 5 located at the bottom of the washing tank 1. After the washing, the washing water in the washing tank 1 is drained by the drain pump 7,
The rinsing is performed several times again to complete the operation.

The washing water is sucked from the bottom of the washing tank 1 through the residue removing filter 5, and then sucked into the gas-liquid separator 10. The gas-liquid separation device 10 has a cylindrical shape, and the suction port 15 is configured to suction from a tangential direction with respect to a circular cross section of the water passage portion. The inside of the washing water travels in the vicinity of the center of the cross section due to the centrifugal force, and the liquid travels near the outer periphery due to the centrifugal force. Thereafter, the bubbles traveling near the center are removed by the bubble blocking net 16, and the liquid component traveling while rotating around the outer periphery is sucked into the suction port 18 of the circulation pump 6. As described above, air bubbles mixed in the cleaning liquid can be removed by passing the gas through the gas-liquid separation device 10.

In a dishwashing apparatus, a special detergent having low foaming is usually used. In such a case, foaming is also generated, and problems such as a decrease in performance due to the air in the pump, noise of the pump, etc. There is a problem that the eyes of the removal filter 5 cannot be made fine. By adopting the configuration of the present embodiment, it is possible to remove air bubbles in the washing water sucked by the circulation pump 6, so that it is possible to suppress the air from the circulation pump, and it is possible to suppress a reduction in pump performance and noise. became.

In the first embodiment, the gas-liquid separation device 10 has a configuration in which bubbles are trapped by the bubble blocking net 16 at the outlet side and do not flow to the suction port 18 of the circulation pump 6. It is also possible to set up a course,
It is preferable to provide a vent pipe communicating from the center of the outlet side of the gas-liquid separator 10 to the upper part of the washing tank 11. Thereby, the bubble blocking net 1
6 becomes unnecessary, so that the configuration of the gas-liquid separation device can be simplified. In this case, it is preferable to supply water while operating the circulation pump so that water does not accumulate in the ventilation pipe when water is supplied from the water supply port at the start of operation.

As another form, it is possible to provide a finer residue removal filter between the washing water from which bubbles have been removed by the gas-liquid separator and the spray water after the washing water has passed through the circulation pump. In this case, since the gas component in the washing water is removed by the gas-liquid separation device, there is no problem of air bleeding in the residue removing filter portion, and since the eyes of the residue removing filter are finer, even smaller residues are removed. This makes it possible to eliminate the re-adhesion of the residue to the tableware and improve the appearance at the time of washing. However, since air does not escape from the residue removing filter when water is supplied from the water supply port, it is necessary to provide an air vent pipe using an openable / closable solenoid valve or the like on the circulation pump side of the residue removing filter.

Next, a second embodiment will be described.
FIG. 3 is a front sectional view of a dishwashing apparatus according to a second embodiment. Reference numeral 30 denotes a solid-liquid separation apparatus for separating and removing residues in washing water. FIG. 4 is a cross-sectional view of the solid-liquid separation device 30,
31 is a flow path forming material, 32 is an outer tube, and 33 is a residue receiver. In the present embodiment, the solid-liquid separation device 30 is in direct communication from the residue removal filter 5 to the suction port 18 of the circulation pump 6, and is provided between the discharge port of the circulation pump and the flow path of the injection port 4.
Is provided. In this solid-liquid separation device, the washing water proceeds spirally in the flow path formed by the flow path forming material 31, and the residue mixed in the washing water is centrifugally applied to the residue receiver 3.
2 to collect and remove. FIG. 5 is a perspective view of the flow path forming material 31. The flow path forming material 31 is not particularly limited in shape, as long as it forms a flow path in a spiral shape.

As the residue receiver 32, a woven fabric, a nonwoven fabric, a net, or the like made of resin, paper, or metal can be used as appropriate. It is necessary to select the roughness in accordance with the size of the residue to be collected, and it is necessary to configure so that the particles once collected do not flow out again. Outer tube 3
It is necessary to design the gap between the flow path forming material 31 and the outer tube 32 so that there is as little gap as possible so that a short path that proceeds straight ahead in the gap between the flow path forming material 31 and the flow path forming material 31 cannot be formed.

The solid-liquid separator 30 needs to be configured so that the residue receiver can be removed so that the residue receiver 33 can be cleaned after the operation is completed. At this time, it is desirable that the cleaning tank 11 be configured to be detachable from the cleaning tank 11 for easy removal. This makes it possible to easily perform the cleaning operation of the residue receiver as in the case of taking in and out of tableware. Further, it is more desirable to provide a detection unit for detecting whether or not the residue receiver 33 is attached. As a configuration of this detection unit, when the residue receiver 33 is mounted on the solid-liquid separation device 30 and fitted into the flow path, a sw is provided at the fitted portion, and when the fitting is performed, the sw is pushed. It can be realized by an electrical detection method or the like, and it is desirable that both the absence of the solid-liquid separation device 30 and the absence of the residue receiver 33 can be detected. By being able to detect the presence or absence of the residue receiver, when the residue receiver is not mounted, it is possible to perform control such as not to start the operation of the circulation pump and to issue a warning to the user by sound or display.

Further, it is more preferable that the outer tube of the solid-liquid separation device is formed of a transparent member so that the presence or absence of the residue reception from the outside and the adhesion state of the residue can be recognized. As the transparent member, for example, acrylic, polycarbonate, unsaturated polyester, epoxy, polyurethane and the like can be used.

The size of the residue in the washing water ranges from a large size of several millimeters to a small size of 0.1 mm or less.
In the solid-liquid separator, various sizes can be removed by appropriately designing the flow velocity, the length of the tube, the radius of rotation, the surface roughness of the residue receiver 33, and the like. By using the solid-liquid separation device of the present invention, it is possible to easily remove the residue of 1 mm or less which cannot be removed by the ordinary residue removal filter due to the problem of air bleeding.

[0033]

According to the present invention, by separating air bubbles from the washing water sucked by the pump, it is possible to reduce the performance degradation and noise caused by the air in the pump.
Further, in the prior art, small dishes which were difficult to remove, but which could affect the appearance of the washed-out pieces of about 0.1 mm or more, and which were easy to clean the residue receptacles to which the removed residues were attached, were easy to wash. It has become possible to provide a cleaning device. Further, in the solid-liquid separation device, even if the removed residue accumulates, the flow path is secured, so that the pressure loss does not increase and a constant flow rate can be secured.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a first embodiment.

FIG. 2 Gas-liquid separation device and peripheral view

FIG. 3 is a front sectional view of a second embodiment.

FIG. 4 is a cross-sectional view of a solid-liquid separation device.

FIG. 5 is a perspective view of a flow path forming material.

FIG. 6 is a perspective view of a flow path forming material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cleaning tank 2 ... Rotating blade 3 ... Cleaning nozzle 4 ... Injection port 5 ... Residue removal filter 6 ... Circulation pump 7 ... Drainage pump 8 ... Drainage pipe 9 ... Tableware basket 10 ... Gas-liquid separation device 15 ... Suction port 16 ... Bubbles Blocking net 17 ... Water outlet 18 ... Suction port 30 ... Solid-liquid separator 31 ... Flow path forming material 32 ... Outer tube 33 ... Residue receiver 311 ... Vane-shaped flow path forming material

Continuation of the front page (72) Inventor Aiko Mitsu 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Inside Totoki Equipment Co., Ltd. (72) Noboru Niihara 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture No. 1 Totoki Kiki Co., Ltd. F-term (reference) 3B082 BG02 BG05

Claims (9)

[Claims] 1. A dishwasher comprising a washing tank for accommodating tableware, a circulation pump and a circulation path for sucking and circulating washing water, and a plurality of injection ports for injecting the washing water, for separating and removing air bubbles. A dishwasher, comprising: a gas-liquid separator that separates air bubbles from a liquid by rotating a water flow from an inlet and passing water through the gas-liquid separator. 2. The dishwasher according to claim 1, wherein the gas-liquid separator is provided on a suction side of the circulation pump. 3. The dishwasher according to claim 2, wherein a residue removing filter made of a removable woven or nonwoven fabric is provided between the gas-liquid separator and the flow path of the injection port. 4. A dishwashing apparatus comprising: a washing tank for accommodating tableware, a circulation pump and a circulation path for sucking and circulating washing water, and a plurality of washing nozzles for injecting the washing water; A solid-liquid separator for separating and removing the solid-liquid, the solid-liquid separator comprising a water passage section for rotating a water flow from an inlet and passing water, and a residue receiver for collecting separated solids; A dishwasher, wherein the receptacle is detachable. 5. The water passage section includes a flow path forming material that forms a spiral flow path and an outer tube that stores the flow path forming material, and a residue receiver is provided on an outer periphery of the flow path forming material. The dishwashing device according to claim 4, characterized in that: 6. The dishwashing apparatus according to claim 4, wherein the residue receiver is a woven or nonwoven fabric made of resin, paper, metal, or the like. 7. The tableware according to claim 4, further comprising a residue receiving detector for detecting the presence or absence of the residue receiver, wherein the operation of the tableware is controlled by an output of the residue receiving detector. Cleaning equipment. 8. The dishwashing apparatus according to claim 4, wherein the residue receiver is configured to be detachable from the washing tank side. 9. The dishwashing apparatus according to claim 4, wherein the solid-liquid separator has an outer tube formed of a transparent member, and a residue receiver configured to be visible from the outside.