CN109394024B

CN109394024B - Cleaning machine

Info

Publication number: CN109394024B
Application number: CN201710713069.2A
Authority: CN
Inventors: 徐慧; 王吉; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2024-01-16
Anticipated expiration: 2037-08-18
Also published as: CN109394024A

Abstract

The utility model relates to a cleaning machine, which comprises a box body and a cleaning mechanism arranged in the box body, wherein the cleaning mechanism at least comprises a spray arm which is arranged at the bottom of the box body and is fixed relative to the box body, and the spray arm is hollow and is provided with a flow channel.

Description

Cleaning machine

Technical Field

The utility model relates to the field of household dish washers, in particular to a cleaning machine.

Background

With the increasing level of living of people, dish washers are increasingly entering home as household electrical appliances for kitchen use. The existing dish-washing machines on the market are generally divided into three types of a desk type dish-washing machine, a cabinet type dish-washing machine and a trough type dish-washing machine, wherein the desk type dish-washing machine is of an integral independent structure and is generally placed on a desk for use; the cabinet type dish washer is also an independent structure, but needs to be embedded into a kitchen cabinet for use; the tub dishwasher is combined with a tub and is generally installed in a kitchen cabinet.

The dish washing machines of the above-mentioned various forms generally achieve the cleaning effect by lifting water by a water pump and spraying the water to fruits and vegetables in a cleaning space. For example, the chinese patent with application number CN97236119.7, i.e. a microcomputer light-operated full-automatic dish washer, and the chinese patent with application number CN00240098.7, i.e. a dish washer, all disclose similar structures, in which the impact force of water flow to fruits and vegetables is weak and not uniform enough, and when fruits and vegetables are more, they cannot be covered by water flow, resulting in poor cleaning effect. The chinese patent CN200710306898.5, which relates to a dish washer, especially a household dish washer, with a device for improving decontamination effect, provides a vaporizing device for generating a fluid mist that can be introduced into a cavity of the dish washer, so as to enlarge a cleaning area of fruits and vegetables and improve uniformity of cleaning media, but the structure still cannot solve the problem of weak impact force of sprayed water flow. For this reason, the applicant has made a series of improvements to the washing machine with dish washing function, such as ZL201310749864.9 "sink-type washing machine", ZL201310750968.1 "sink-type washing machine", which uses the rotary spray arm disposed at the bottom of the sink body as the water spraying means to connect with the water pump, the water pump sucks the water in the sink body and then sprays the water from the spray arm to wash the object to be washed, and chinese application (a sink-type washing machine) such as 201610110963.6 (publication No. CN105662300 a) discloses such a whole H-type, the split flow passage includes a lateral split flow passage in the middle and vertical split flow passages at both sides, respectively, which biases the water pump at the bottom of the sink body, such as one end of the length direction of the sink body, since the water pump is smaller to the other end of the sink body or near the fruit and vegetable in the length direction of the other end, and a device for collecting the residue is easy to be added at the other end; in a fruit and vegetable washer, in order to equalize the suction force of two ends of the spray arms to fruits and vegetables, chinese patent No. CN206239254U of the applicant's ZL201621100369.0 discloses such a fruit and vegetable washer comprising two water pumps and two spray arms, wherein the flow dividing passage extends from the first end to the second end of the spray arm, the second end of one spray arm faces the first end of the other spray arm, and the direction of the nozzle of one spray arm is opposite to the direction of the nozzle of the other spray arm, so that the water streams sprayed from the two spray arms are formed into an annular rotary water stream. The two spray arms are arranged, and the direction of the spray nozzle is arranged, so that water flow sprayed by the spray holes can form annular rotary water flow, the spray arms at the two ends apply the same acting force to fruits and vegetables, so that the fruits and vegetables can rotate in a certain direction in the vegetable basket, the fruits and vegetables are in a moving state relative to the water tank body and the water flow, and the water flow can wash each surface of fruits and vegetables to be cleaned, and meanwhile, the ultrasonic generating devices are arranged at the two sides of the spray arms, so that a better cleaning effect is obtained; however, two spray arms of two water pumps are required, and therefore, further improvement is required, and meanwhile, only a single rotary spray arm is adopted to clean objects (fruits and vegetables or fruits and vegetables) to be cleaned, so that dead angles can not be washed by water flow sprayed from the rotary spray arm.

Disclosure of Invention

The present utility model is directed to a cleaning machine capable of enhancing cleaning effect.

The technical scheme adopted for solving the technical problems is as follows: the cleaning machine comprises a box body and a cleaning mechanism arranged in the box body, wherein the cleaning mechanism at least comprises a spray arm which is arranged at the bottom of the box body and is fixed relative to the box body, and the spray arm is hollow and is provided with a flow passage, and is characterized in that an air filling port communicated with the flow passage is formed in the top wall of the spray arm, and the cleaning machine further comprises a gas supply device, and the air filling port is connected with the gas supply device.

Further, the top wall of the spray arm is provided with an air filling cavity with a partially concave part, the air filling port is arranged at the top of the air filling cavity, and the bottom or side opening of the air filling cavity is communicated with the flow channel.

The air bubble generating device comprises a shell, an impeller is rotatably arranged in an inner cavity of the shell, and an orifice plate and/or at least one grid structure or net structure is arranged on the outflow side of the shell. The air-filling cavity is communicated with the flow channel of the spray arm through the air outlet, water in the flow channel can enter the air-filling cavity, when the external air supply device ventilates to the air-filling cavity, the impeller of the air bubble generating device can be driven to rotate, the rotation of the impeller accelerates the water flow of the air-filling cavity and increases or mixes air in the water in the process of accelerating rotation until the water flow is decelerated through the orifice plate and/or the grid structure or the net structure at the outflow side, and then the water which is mixed with the air and then foamed again can flow out at the outflow side and finally enters the flow channel of the spray arm.

Further, at least three through holes are formed in at least one blade of the impeller. Because the through-flow holes are formed on the impeller, air bubbles can be formed in the rotation process of the impeller, the air bubble content in the air adding cavity is increased, water flow entering the flow channel is rich in air bubbles, when the water flow is sprayed out from the spraying holes of the spraying arm to reach the surface of a cleaning object to be cleaned, the air bubbles are broken, impact force is formed again, and dirt on the surface of the object to be cleaned is stripped together with the water flow, so that the cleaning effect is improved.

Further, the spray arm is provided with a water inlet communicated with the flow channels at the central part of the bottom, at least two flow channels are annular flow channels or radioactive flow channels which are O-shaped, and the two flow channels are respectively arranged at two sides of the water inlet. The flow channels are respectively arranged on two sides of the water inlet, so that the water flow spraying pressure at two ends of the spray arm can be effectively enhanced and balanced, and the flow channels can also be radioactive flow channels.

In order to reduce the loss of kinetic energy of water by the opposite impact of the downstream distal end of the O-shaped annular flow passage, the downstream distal end of the annular flow passage is blocked by at least one blocking wall along the water flow direction.

Further, the cross-sectional area of the annular flow passage gradually decreases from upstream to downstream in the water flow direction. The sectional area of the annular flow channel is gradually reduced from the upstream to the downstream, so that the flow velocity of the water flow is large at the downstream with small sectional area, and the flow velocity of the water flow is small at the upstream with large sectional area, and according to the Bernoulli principle, the larger the flow velocity of the fluid, the smaller the pressure, the smaller the flow velocity of the fluid and the larger the pressure; the water sprayed out from the spray holes of the sample spray arm can be pressed from the high pressure upstream to the low pressure downstream, so that the object to be cleaned can be lifted upwards by the water pressure sprayed out from the spray holes at the low pressure downstream of the spray arm, the object to be cleaned is in a moving state, and therefore, water flows can wash each surface of the object to be cleaned, the cleaning without dead angles is achieved, a good cleaning effect is achieved, and the problems that the object to be cleaned is effectively avoided, and the positions close to dead angles on two sides of a washing cavity of a cleaning tank are easy to clean dead angles due to insufficient water flow washing force are avoided.

Further, the annular flow passage has at least three spray holes on each side of the barrier wall separation, and the distance between a spray hole adjacent to the barrier wall and the barrier wall is smaller than the distance between other adjacent spray holes. The distance between the spraying holes adjacent to the baffle wall and the baffle wall is small, so that water flow which can turn back from the baffle wall can be sprayed out of the spraying holes rapidly, so that the object to be cleaned is lifted upwards, and the deposition of the object to be cleaned is avoided. Better, the opening directions of other adjacent spraying holes are all towards the same rotation direction, so that water flow sprayed from the annular flow channel forms annular water flow, acting force is applied to the object to be cleaned, the object to be cleaned can rotate along a certain direction, the object to be cleaned is in a motion state, and therefore the water flow can wash each surface of the object to be cleaned, the object to be cleaned is clean without dead angles, and a better cleaning effect is achieved.

Further, the inner annular wall of the O-shaped annular flow passage forms a central hole.

The utility model provides a cleaning machine with the spray arm for solving a second technical problem, which is characterized in that: the washing device comprises a washing cavity, and the side wall of the washing cavity is provided with the gas supply device. The gas supply means may be an air pump.

Further, an ultrasonic wave generating device is arranged below the central hole. The ultrasonic wave generating device is matched with the spray arm, so that relatively uniform ultrasonic waves can be emitted, and a relatively good cleaning effect is further obtained.

The bottom of the box body is provided with a heating component.

Compared with the prior art, the utility model has the advantages that the wall surface of the spray arm is provided with the air-entraining cavity communicated with the flow channel, so that air bubbles can be generated by introducing air from the air-entraining port of the air-entraining cavity, water mixed with a large amount of air bubbles can be sprayed onto a cleaning object from the spray hole on the spray arm, and the air-entraining cavity can be broken to generate instant air explosion phenomenon so as to form radioactive impact force, so that the area and probability of directly flushing the cleaning object are increased, the cleaning speed is further increased, the existence of spray dead angles of the spray arm is effectively avoided, the cleaning rate of the spray arm is improved, the cleaning effect is effectively enhanced, meanwhile, the cleaner also has a turbulent cleaning function, when the water level is higher, the water mixed with the air bubbles sprayed from the spray hole of the spray arm can form turbulent flow, the air explosion force formed by the turbulent flow mixed with the air bubbles is also increased rapidly, the impact force and the friction force in the unit volume are greatly increased, and the cleaning effect is better in a unit volume is achieved even under the condition that any surfactant or detergent is not used, and the cleaner is more omnibearing.

Drawings

FIG. 1 is a schematic view of a cleaning machine according to an embodiment 1 of the present utility model;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;

fig. 4 is a schematic structural view of an upper spray arm in the spray arm according to embodiment 1 of the present utility model;

fig. 5 is a schematic structural view of the upper spray arm in the spray arm according to embodiment 2 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Example 1

Referring to fig. 1 to 4, the washer of the present utility model is designed to be particularly suitable for a sink type washer having an elongated sink, particularly for washing fruits and vegetables, but may be applied to a general sink type washer, as well as a front-opening European type washer and a drawer type washer, in fact.

The following description will be made by taking a fruit and vegetable cleaning machine as an example:

the fruit and vegetable cleaning machine comprises a box body 8 and a cleaning mechanism arranged in the box body 8, wherein the cleaning mechanism at least comprises a spray arm 2 and a water pump 100 which are arranged at the bottom of the box body 1 and fixed relative to the box body 1, the water pump 100 is arranged at the bottom of the box body 8, the spray arm is used as a water outlet component of the water pump 100, and water pumped by the water pump 100 is sprayed out to clean fruits and vegetables and the like to be cleaned in the box body 8. In the present utility model, the case 8 is preferably formed in an elongated shape, thereby not only being better adapted to the space of the user's kitchen (to be fitted with other sink), but also saving water with respect to a square sink.

The water pump 100 is disposed at the middle position of the bottom of the box 8, the water pump 100 includes a motor and an impeller, the impeller includes a hollow shaft with a terminal connected to an output shaft of the motor and a plurality of blades uniformly distributed on the shaft circumference and extending along the axial direction, wherein the motor is located below the bottom of the box, and the impeller is located in the bottom of the box, in this embodiment, preferably, a water inlet of the water pump 100 is located below the impeller (lower water inlet), and the water inlet corresponds to a water inlet on a spray arm, and water flows upwards from the bottom, and the structure of the water pump 100 is the same as that of the applicant's chinese patent No. 201610110965.5 or 201310752573.5, and will not be repeated herein. A filter screen is arranged between the lower part of the spray arm and the water pump 100 to isolate dirt from entering the water pump 100 and prevent the spray arm from being blocked.

The ultrasonic wave generating device 9 is arranged on two sides of the water pump 100 of the box body 8, the drainer, the drain valve and the heating component are also arranged at the bottom of the box body 8, and dirty water after cleaning can be discharged through the drainer and the drain valve. The box 8 is also internally provided with a cleaning basket for placing fruits and vegetables to be cleaned, the upper end edge of the cleaning basket is placed on the inner side wall of the upper end of the box, and the bottom of the cleaning basket is positioned above the spray arm, the ultrasonic generating device 9 and the drainer.

In order to adopt only one water pump 100 in the middle of a long and narrow box body 8, and still balance the water flow spray pressure at two ends of a spray arm under the condition of not increasing the power of the water pump 100 and keep the turbulence intensity not weakened, the spray arm comprises a spray arm 1, the spray arm 1 is hollow and is provided with a runner 2, the top wall of the spray arm 1 is provided with an air-filling cavity 3 which is at least partially concave, an air-filling port 31 is arranged at the top of the air-filling cavity 3, and the bottom or side opening of the air-filling cavity 3 is communicated with the runner 2.

The gas filling port 31 is arranged at the top of the gas filling cavity 3 and is connected with the external gas supply device 4 through a gas inlet pipe, the bottom opening 32 of the gas filling cavity 3 is unfolded by taking the example, the bottom opening 32 of the gas filling cavity 3 is communicated with the flow channel 2, the bottom opening 32 is also provided with a bubble generating device 5, the bubble generating device 5 comprises a shell 51, an impeller 52 is rotatably arranged in the inner cavity of the shell 51, and a honeycomb-shaped pore plate and/or at least one grid structure or net structure is arranged on the outflow side of the shell 51. Taking the orifice plate 53 as an example, the water flow drives the impeller in the housing 51 to rotate, and the rotation of the impeller accelerates the water flow and increases or mixes air in the water during the acceleration rotation until the water is decelerated by the orifice plate on the outflow side, i.e., water which is mixed with air and then re-bubbled on the outflow side can flow out and finally enters the shower arm flow passage 2. The side walls of the housing 51 are also provided with holes 511 for better acceleration into the shower arm channel 2. In order to increase the content of bubbles in the air-filling cavity 3, a plurality of through holes 521 are formed in the upper section of each blade of the impeller 52, the through holes 521 can form bubbles in the rotation process of the impeller 52, the content of bubbles in the air-filling cavity 3 is increased, water flow entering the flow channel 2 is rich in bubbles, the bubbles are broken when being sprayed out from the spraying holes of the spraying arm to reach the surface of a cleaning object to be cleaned, impact force is formed again, dirt on the surface of the object to be cleaned is stripped together with the water flow, and accordingly the cleaning effect is improved.

The spray arm 1 is provided with a water inlet communicating with the flow channel 2 at the central part of the bottom, the wall surface of the spray arm 1 is provided with spray holes communicating with the flow channel 2, the flow channel 2 is provided with two spray holes respectively positioned at two sides of the water inlet, the flow channel 2 is used as an O-shaped annular flow channel for unfolding description in the embodiment, and the two flow channels 2 are similar in structure and are in a center symmetrical graph, so that the description below takes the left flow channel 2 as an example for illustration.

The spray arm 1 can be integrally injection molded, and can be arranged into two parts which are connected in an upper-lower split manner for reducing the adding difficulty. The spray arm 1 comprises an upper spray arm 11 and a lower spray arm 12, the periphery of the spray arm 1 is provided with a convex wall 13 surrounding the flow channel 2, a water inlet is formed in the middle of the lower spray arm 12, and spray holes are formed in the top surface of the upper spray arm 11. In addition, in order to enhance the cleaning effect, the two sides of the water pump 100 of the box body are provided with ultrasonic generating devices 9, and correspondingly, in a central hole 7 formed by the inner ring wall of the O-shaped annular flow passage of the spray arm arranged on the ultrasonic generating devices 9, one end of the spray arm 1 inwards extends to form a baffle wall 6 propped against the outer wall of the central hole 7, the tail end of the O-shaped annular flow passage is separated by the baffle wall 6 to prevent water flow intersection and impact water outlet pressure, the hole wall of the central hole 7 upwards extends to form an inner ring convex wall 71, a first side surface of the inner ring convex wall 71, the inner side surface of the convex wall 13 and the baffle wall 6 jointly form a first sub-flow passage 21, a second side surface of the inner ring convex wall 71, the inner side surface of the convex wall 13 and the baffle wall 6 jointly form a second sub-flow passage 22, the spray hole comprises a first spray hole corresponding to the first flow distribution passage and a second spray hole corresponding to the second flow distribution passage, the number of the first spray holes and the second spray holes is 4 respectively, if the number is too large, the phenomenon of weakening of the spray pressure of the water flow is easy to cause, turbulence and weak spray effect are caused, if the number is too small, the spray cleaning range is easy to cause, 4 are used for unfolding and describing, namely, a spray hole I10, a spray hole II 20, a spray hole III 30 and a spray hole IV 40, a spray hole V50, a spray hole VI 60, a spray hole V70 and a spray hole V80 respectively, wherein the distance between the spray hole IV 40 and the spray hole V80 and the baffle wall 64 is smaller than the distance between other adjacent spray holes, and the spray holes are inclined upwards at a certain angle with the horizontal direction, preferably 30-60 degrees, the angle of the spray hole IV 40 and the spray hole V80 is arranged to enable the water flow returning from the baffle 4 to be sprayed from the tangential direction of the spray holes adjacent to the baffle wall 6, and the air bubble generating device 5 is arranged at the air outlet 32 of the air adding cavity 3, the water flowing into the runner 2 from the water inlet can generate bubbles, the water mixed with a large amount of bubbles is sprayed onto the surfaces of fruits and vegetables from the spray holes on the spray arm 1, the instant air explosion phenomenon can be generated by cracking to form radioactive impact force, the area and probability of directly washing fruits and vegetables are increased, further, the cleaning speed is accelerated, the existence of spray dead angles of the spray arm is effectively avoided, the cleaning rate of the spray arm is improved, the cleaning effect is effectively enhanced, when the water level is higher, the openings of other adjacent spray holes, the spray holes 10, the spray holes 20, the spray holes 30, the spray holes 50, the spray holes 60 and the spray holes 70 are all oriented to the same rotation direction, the water mixed with bubbles can form turbulence, the air explosion force formed by scouring fruits and vegetables to be cleaned is also increased rapidly, and the impact force and the friction force in the unit volume generated are greatly increased, and the cleaning effect is achieved in a more omnibearing manner even under the condition that any surfactant or detergent is not used. In addition, the cross section area of the O-shaped annular flow passage is gradually reduced from the upstream to the downstream along the water flow direction. The sectional area of the annular flow channel is gradually reduced from the upstream to the downstream, so that the flow velocity of the water flow is large at the downstream with small sectional area, and the flow velocity of the water flow is small at the upstream with large sectional area; therefore, the water sprayed out from the spray holes of the spray arm 1 can be pressed from the high pressure upstream to the low pressure downstream, so that the water sprayed out from the spray holes at the downstream of the spray arm 1 can be flushed out to each surface of fruits and vegetables to be cleaned, the cleaning without dead angles is achieved, a good cleaning effect is achieved, and therefore, the problems that the fruits and vegetables to be cleaned are effectively avoided, and the positions close to the dead angles at two sides of the box body are easy to clean due to insufficient water flow flushing force are avoided.

According to the fruit and vegetable cleaning machine, the spraying arm structure is adopted, fruits and vegetables to be cleaned are placed in the cleaning basket of the box body during cleaning, water flows through the bubble generating device 5 positioned in the air adding cavity 3, a large amount of bubbles are generated by the water flow passing through the bubble generating device 5, the sprayed water flow with the bubbles is sprayed out of the spraying holes of the spraying arm, when the sprayed water flow reaches the surfaces of the fruits and vegetables to be cleaned, the bubbles are broken, impact force is formed again, and the irregular fruits and vegetables are difficult to touch, such as particles and dirt in fine seams are separated from the surfaces of the fruits and vegetables, so that dead angles which cannot be cleaned do not exist, in addition, the water flow is pumped to the annular flow channels on two sides by the water inlet of the lower spraying arm to ensure stable water pressure, each annular flow channel of the O type comprises two sub-flow channels 2, the spraying pressure of each water flow is controlled to be consistent, and the tail ends of the flow channels 2 are separated by the baffle walls 6, so that the water flow intersection and the water outlet pressure is prevented from being influenced. The left spray arm and the right spray arm rotate in the same direction in water, turbulence is respectively formed, turbulence is enhanced, so that more omnibearing cleaning is realized, the phenomenon that local positions are not washed cleanly is avoided, water quantity can be saved, the fixed spray arm mainly washes fruits and vegetables, the design of bottom air outlet is particularly suitable for tender fruits and vegetables (the tender fruits and vegetables are not suitable for directly washing the surfaces of the fruits and vegetables by rapid air-entraining water flow), and a large number of bubbles escaping from the bottom are finally broken on the fruits and vegetables, so that dirt and pesticide residues on the surfaces of the fruits and vegetables are removed more softly.

Example 2

Substantially similar to the structure of example 1, the difference is that: the runner 2 is a radial runner, namely, is divided into three sub-runners, namely, a third runner 23, a fourth runner 24 and a fifth runner 25, and at least three spraying holes are formed in the wall surface corresponding to each sub-runner so as to control the spraying pressure of each sub-runner to be consistent.

Although the utility model is derived from a sink-type washer, the design of the utility model is equally applicable to non-sink-type washers, such as front-opening European washers, drawer washers, and the like.

Claims

1. The cleaning machine comprises a box body (8) and a cleaning mechanism arranged in the box body (8), wherein the cleaning mechanism at least comprises a spray arm (1) which is arranged at the bottom of the box body and is fixed relative to the box body (8), and a flow channel (2) is formed in the spray arm (1), and the cleaning machine is characterized in that an air filling port (31) communicated with the flow channel is formed in the top wall of the spray arm (1), and the cleaning machine further comprises a gas supply device, and the air filling port (31) is connected with the gas supply device (4); the top wall of the spray arm (1) is provided with an air-filling cavity (3) with a partially concave part, the air-filling port (31) is arranged at the top of the air-filling cavity (3), and the bottom or side opening of the air-filling cavity (3) is communicated with the flow channel (2); the spray arm (1) is provided with a water inlet communicated with the flow channels (2) at the central part of the bottom, and at least two flow channels (2) are annular flow channels or radioactive flow channels which are O-shaped and are respectively arranged at two sides of the water inlet.

2. A cleaning machine according to claim 1, characterized in that the opening (32) is provided with a bubble generating device (5), the bubble generating device (5) comprising a housing (51), in the interior of which housing (51) an impeller (52) is rotatably arranged, the outflow side of the housing (51) being provided with an orifice plate or at least one grid structure or mesh structure.

3. A cleaning machine according to claim 2, characterized in that at least three through-flow holes (521) are provided in at least one blade of the impeller (52).

4. A cleaning machine as claimed in claim 3, wherein: in the direction of water flow, said annular flow channel is blocked at the downstream distal end by at least one blocking wall (6).

5. The cleaning machine of claim 4, wherein: the cross-sectional area of the annular flow passage gradually decreases from upstream to downstream along the water flow direction.

6. The cleaning machine of claim 4 or 5, wherein: the annular flow passage is provided with at least three spraying holes on each side of the separation of the baffle wall (6), and the distance between the spraying holes adjacent to the baffle wall (6) and the baffle wall (6) is smaller than the distance between other adjacent spraying holes.

7. The cleaning machine of claim 6, wherein: the inner ring wall of the O-shaped annular flow passage forms a central hole (7), and an ultrasonic generating device (9) is arranged below the central hole (7).

8. The cleaning machine of claim 1, wherein: the bottom of the box body (8) is provided with a heating component.