CN105011878A - Dish washer - Google Patents

Abstract

The invention relates to the technical field of household electric appliances used in a kitchen and in particular relates to a dish washer comprising a case body and a liner. The lower part of the liner is provided with a water collection groove; a spiral propeller is disposed in the water collection groove; cleaning liquid in the water collection groove is driven by rotation of the spiral propeller to form high speed projecting water flows, so tableware over the water collection groove can be cleaned; high speed rotation of the spiral propeller enables water flows to be projected out of cleaning liquid surface at high speed in a tapered shape; impact to the tableware surfaces can be achieved; large water flow and great impact as well as strong water flow force are provided; washing time is shortened; great cleaning effect is provided for tableware with great depth; during the washing, the spiral propeller is at least partially arranged in the cleaning liquid, so cleaning liquid can be propelled and form high speed water flow projection and less water amount is required; and the dish washer is simply structured and reliable, possesses great cleaning effect and requires low production cost.

Description

a dishwasher

technical field

The invention relates to the technical field of kitchen appliances, in particular to a dishwasher.

Background technique

Along with improving day by day of people's living standard, dishwasher more and more enters family as a kind of kitchen appliance product.

At the beginning, dishwashers used a washing principle similar to that of today's wave-wheel washing machines for tableware washing.

As disclosed in the patent document CN2045263U, a scroll-type double-cylinder small tableware washing machine uses the rotation of the pulsator installed at the bottom of the cleaning tank to make the hot water in the tank generate complex turbulent flow, and the tumbling, scouring and friction generated by the water flow The function is to clean the tableware.

Patent document CN2238018Y further proposes a dishwasher, which uses this principle to further improve the structure of the dishwasher. It is equipped with a propeller in the cylinder to cooperate with the rotating bowl basket for washing. It can be known from its manual that the function of the propeller is equivalent to that of a pulsator. , when it is working, it rotates forward and reverse. When it rotates forward, under the push of the propeller, the water in the container forms an upward rushing flow, which is called the upper flushing effect. At the same time, under the diversion effect of the water flow on the wall of the container, The formation of high-speed swirling flow is called forward swirling flushing; when it is reversed, it forms a downward-rolling flushing, which is called downward flushing, and the formation of reverse swirling flow at the same time is called reverse swirling flushing. In the alternating washing of the four main flushing actions, an efficient washing effect is obtained. This type of dishwasher, after being used in the market, consumes water, electricity, and poor washing effect, and is a technology that is gradually eliminated.

Through continuous technological innovation, so far, dishwashers have achieved a leap from structure, principle to control mode. At present, most mainstream products on the market use circulating water pump sprayers for washing. In the process of washing dishes, use In the water circulation system, the washing water forms high-pressure water through the booster pump and is sprayed from the sprayer (mostly rotatable) through the pipeline to achieve the purpose of cleaning the tableware.

Such as the dishwasher disclosed in the patent document CN2328332Y, it is provided with a tableware rack and a shower in the cleaning tank. There are spray holes on the shower, which are sprayed out after being pressurized by the booster pump in the circulation pipeline to wash the tableware.

The dishwasher using this method is limited by the pipeline and the booster pump. The water spraying volume is small and the water spraying force is small, resulting in long washing time and poor cleaning effect, especially difficult to clean deep tableware, such as bowls, Pots, etc., are not suitable for Chinese household use.

Contents of the invention

The object of the present invention is to provide a dishwasher with simple structure, low production cost, high cleaning degree, fast cleaning speed and water saving.

For reaching this purpose, the present invention adopts following technical scheme:

A dishwasher, comprising a box body and an inner tank, wherein a sump is provided at the lower part of the inner tank; a screw propeller is installed in the sump, and the cleaning liquid in the sump is driven by the rotation of the screw propeller to form a high-speed Outer jets of water wash the tableware above the sump.

As a preferred solution of the above dishwasher, a planar filter is provided along the outer circumference of the sump, and the cleaning liquid is filtered through the planar filter and returned to the sump.

As a preferred solution of the above-mentioned dishwasher, the bottom of the liner is located below the plane filter and is provided with a circumferential groove, the circumferential groove is arranged along the outer circumference of the sump, and passes through the return channel communicate with the sump.

As a preferred solution of the above dishwasher, at least one water return channel connecting the water collection tank and the bottom of the inner container is provided on the side wall of the water collection tank, and a filter element is arranged in the water return channel.

As a preferred solution of the above-mentioned dishwasher, the bottom of the liner is provided with a circumferential groove, the circumferential groove is arranged along the outer circumference of the sump, and communicates with the sump through the return channel .

As a preferred solution of the above dishwasher, the bottom of the circumferential groove has a certain slope to facilitate the flow of cleaning liquid into the return water channel.

As a preferred solution of the above dishwasher, the open end of the sump is provided with a protective cover.

As a preferred solution of the above-mentioned dishwasher, it also includes an inlet and outlet system, the inlet and outlet system includes a water inlet valve, a drain pump and a water level control device, and the water inlet valve and the drain pump are respectively connected to the collector through pipelines. The water inlet and the drain of the sink are connected.

As a preferred solution of the above dishwasher, a heating device for heating the cleaning liquid is further provided at the bottom of the sump.

As a preferred solution of the above-mentioned dishwasher, a dish rack is arranged inside the inner container, and the dish rack is located on the upper part of the sump.

The beneficial effects of the present invention are as follows: the application provides a dishwasher, which uses the rotation of the screw propeller installed in the sump to push the cleaning liquid to form a high-speed water flow to clean the tableware, and the high-speed rotation of the screw propeller makes the water flow The cone-shaped body ejects the cleaning liquid surface at high speed and impacts the surface of the tableware. Compared with the injection method driven by the pressure pump, the water flow rate is large, the impact force is large, the water flow is strong, the required washing time is greatly shortened, and the depth is greater The cleaning effect of the tableware is good; it is different from the wave wheel washing method. When washing, the screw propeller is at least partly placed in the cleaning liquid to meet the driving force of the cleaning liquid to form a high-speed external jet water flow for cleaning, and the water required is small; and this The dishwasher with this structure has a simple and reliable structure, better cleaning effect, lower production cost and reliability.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of a dishwasher provided in Embodiment 1 of the present invention;

Fig. 2 is a top view of the dishwasher provided in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the dishwasher provided in Embodiment 2 of the present invention;

Fig. 4 is a top view of the dishwasher provided in Embodiment 2 of the present invention;

Fig. 5 is a top view of the dishwasher provided by Embodiment 2 of the present invention having both a flat filter and a filter element.

in:

1: box; 2: liner; 3: water collection tank; 4: bowl rack; 5: screw propeller; 6: drive motor; 7: flat filter; 8: circumferential groove; 9: return channel; 10: Protective cover; 11: water inlet valve; 12: drain pump; 13: heating device; 14: filter element.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Implementation Mode 1

As shown in Fig. 1 and Fig. 2, a dishwasher provided in this embodiment includes a box body 1 and an inner container 2, and the box body 1 supports structures such as the inner container 2 arranged inside it. The bottom of the box body 1 is provided with a base, and the upper part is provided with an upper cover.

The washing of the tableware is all completed in the inner container 2, the bottom of the inner container 2 is provided with a sump 3, and the inner container 2 is provided with a bowl rack 4 for placing the tableware to be cleaned, and the bowl rack 4 is located at the bottom of the sump 3. upper part. A screw propeller 5 is installed in the sump 3 , and the screw propeller 5 rotates under the drive of the drive motor 6 . Specifically, the above-mentioned screw propeller 5 is a pumping paddle, and the pumping paddle includes a rotating shaft and several helical blades arranged on the outer circumference of the rotating shaft. The rotating shaft is connected with the inner container 2 through a waterproof sealing ring, and rotates under the drive of the driving motor 6 . Preferably, two helical blades are arranged on the water pumping paddle, and the driving motor 6 is equipped with a cooling device. The screw propeller 5 rotates under the drive of the driving motor 6, and simultaneously the cleaning liquid in the sump 3 can be promoted to form a high-speed external water jet to clean the tableware on the dish rack 4. This outward water flow is different from the turbulent flow produced by the conventional pulsator. This water flow produces a strong axial thrust relying on the helical propeller 5, making it eject the liquid surface of the cleaning liquid outwards, which can directly reach the bowl rack 4, and the bowl rack 4 Rinse the dishes on top. The specific driving mode of the driving motor 6 to the screw propeller 5 is as follows: during the whole tableware cleaning process, the driving motor 6 can continuously drive the screw propeller 5 to rotate, forming a continuous high-speed water flow, which continuously impacts the surface of the tableware. Driven by the drive motor 6, the screw propeller 5 can also rotate periodically, that is, the screw propeller 5 performs alternating rotation and stop motions. The rotational speed is changing. The shape of the cone formed by the outgoing water flow also changes accordingly, which increases the diversity of the water flow and improves the cleaning effect of the tableware.

The dishwasher provided in this embodiment also includes a plane filter 7 for filtering the residue generated during the dishwashing process. Specifically, the plane filter 7 is arranged along the outer circumference of the sump 3 to clean the dishes after washing. The liquid returns to the sump 3 after being filtered by the plane filter 7. More specifically, a circumferential groove 8 is provided at the bottom of the liner 2 below the plane filter 7 , and the circumferential groove 8 is arranged along the outer circumference of the sump 3 and communicates with the sump 3 through a return channel 9 . Further specifically, the above-mentioned plane filter 7 is detachably arranged on the upper part of the circumferential groove 8, so as to facilitate the cleaning of the plane filter 7. After the tableware is cleaned, the flat filter 7 can be taken out and cleaned. The above-mentioned plane filter 7 includes a frame, and a screen structure arranged on the frame.

The above-mentioned circumferential groove 8 can guide the cleaning liquid returning to the washing tank 3. In order to further improve the flow diversion effect of the circumferential groove 8, the bottom of the circumferential groove 8 has a certain slope, which is convenient for the cleaning liquid to flow into the return channel 9 .

In order to prevent the screw propeller 5 rotating at high speed from being damaged by falling objects, a protective cover 10 is provided at the open end of the sump 3, and the protective cover 10 is a grid-like structure with a larger mesh, thus, the screw propeller 5 While being protected, the water flow pushed out by the screw propeller 5 can pass through the protective cover 10 without hindrance.

The water inlet and drainage system of this embodiment includes a water inlet valve 11, a drain pump 12, and a water level control device for controlling the liquid level in the sump 3. The water inlet and the water outlet are connected. The cleaning liquid enters the sump 3 through the water inlet valve 11, and the cleaning liquid after cleaning the tableware is discharged out of the sump 3 through the drain pump 12. When the water inlet valve 11 injects water into the sump 3, the water level control device controls The liquid level height stops water injection when the liquid level in the sump 3 is slightly higher than the top of the screw propeller 5.

At the same time, a heating device 13 for heating the cleaning liquid is also provided at the bottom of the dishwasher.

The working process of each part of the above-mentioned dishwasher all works under the control of the computer board.

The specific working process of the above-mentioned dishwasher is: inject a certain amount of cleaning liquid into the sump 3 through the water inlet and drainage system, and the initial liquid level of the cleaning liquid is slightly higher than the top of the screw propeller 5. The screw propeller 5 rotates under the drive of the driving motor 6, and pushes the cleaning liquid where it is located to move upward from the bottom while assisting to produce a certain sprinkler effect, thereby forming a high-speed external jet flow, which can clean the tableware placed on the top. Corresponding water flow is that small end faces the hollow cone of screw propeller 5 in the spatial distribution shape above the liquid level, the opening size of the two ends of this hollow cone and the speed of water jetting, water quantity are all with the shape of screw propeller 5, size and The shape of the hollow cone can be adjusted accordingly by changing its shape, size or rotational speed. After the cleaning liquid has cleaned the tableware, the cleaning liquid returns to the sump 3 through the water return channel 9 after being filtered by the flat filter 7 to complete a water flow cycle. After the tableware is cleaned, the smaller residue can be discharged by the drain pump 12, and the larger residue is left on the flat filter 7, and the flat filter 7 is taken out and rinsed to complete the removal of the washing residue.

Implementation mode two

In this manner, the difference between this embodiment and Embodiment 1 is that the two filter the residue differently. Specifically, as shown in Fig. 3 and Fig. 4, at least one return channel 9 connecting the sump 3 and the bottom of the liner 2 is provided on the side wall of the sump 3, and a filter element 14 is arranged in the return channel 9 . More specifically, a circumferential groove 8 is provided at the bottom of the inner tank 2 , and the circumferential groove 8 is arranged along the outer circumference of the sump 3 and communicates with the sump 3 through the return channel 9 with the filter element 14 . Circumferential groove 8 can play the effect of diversion to the cleaning liquid that returns to sump 3, in order to further improve the diversion effect of circumferential groove 8, the bottom of circumferential groove 8 has certain slope, facilitates cleaning liquid to flow into backwater channel 9.

The specific filtering method for the washing residue in this embodiment is: after the cleaning liquid cleans the tableware, it falls into the circumferential groove 8 . The cleaning fluid enters the sump 3 through the return channel 9 under the diversion of the circumferential groove 8 . When the cleaning liquid passes through the return water channel 9 , residues in the cleaning liquid will remain in the filter element 14 . After the tableware is cleaned, the filter element 14 is taken out for cleaning to complete the removal of the washing residue.

It should be noted that this embodiment does not exclude the situation that the planar filter 7 mentioned in the first embodiment is arranged on the above-mentioned circumferential groove 8 . Specifically, as shown in FIG. 5 , the flat filter 7 mentioned in Embodiment 1 is provided on the circumferential groove 8 , and a filter element 14 is provided in the return channel 9 connecting the circumferential groove 8 and the sump 3 . Preferably, the planar filter 7 and the filter element 14 can be of an integral structure. The plane filter 7 and the filter element 14 are arranged at the same time, which can improve the filtering effect on the residue.

The dishwasher of the present invention is described through preferred embodiments, and those skilled in the art should know that various changes or equivalents can be made to these features and embodiments without departing from the spirit and scope of the present invention. replace. The present invention is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the present application all belong to the protection scope of the present invention.

Claims (10)

1. A dishwasher, comprising a casing and an inner container, is characterized in that a sump is arranged at the bottom of the inner container; a screw propeller is installed in the sump, and the rotation of the screw propeller pushes the water sump into the sump. The cleaning liquid forms a high-speed external water jet to clean the tableware located above the sump. 2 . The dishwasher according to claim 1 , wherein a plane filter is arranged along the outer circumference of the sump, and the cleaning liquid is filtered through the plane filter and returned to the sump. 3 . 3. The dishwasher according to claim 2, wherein a circumferential groove is arranged on the bottom of the liner below the plane filter, and the circumferential groove is arranged along the outer circumference of the sump , and communicate with the sump through the return channel. 4. The dishwasher according to claim 1, characterized in that at least one return channel connecting the sump and the bottom of the inner tank is provided on the side wall of the sump, and a filter element is arranged in the return channel . 5. The dishwasher according to claim 4, characterized in that, the bottom of the liner is provided with a circumferential groove, the circumferential groove is provided along the outer circumference of the sump, and is connected with the water return channel through the water return channel. The sump is connected. 6. The dishwasher according to claim 3 or 5, characterized in that the bottom of the circumferential groove has a certain slope to facilitate the flow of cleaning liquid into the return water channel. 7. The dishwasher according to claim 1, characterized in that a protective cover is provided at the open end of the sump. 8. The dishwasher according to claim 1, further comprising an intake and drainage system, the intake and drainage system comprising a water intake valve, a drain pump and a water level control device, the water intake valve and the drain pump respectively pass through The pipeline communicates with the water inlet and the drain of the sump. 9. The dishwasher according to claim 1, characterized in that, a heating device for heating the cleaning liquid is further provided at the bottom of the sump. 10. The dishwasher according to claim 1, characterized in that, a dish rack is arranged inside the inner container, and the dish rack is located on the upper part of the sump.