CN109394107B

CN109394107B - Cleaning machine

Info

Publication number: CN109394107B
Application number: CN201710712877.7A
Authority: CN
Inventors: 徐慧; 朱灯光; 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: CN109394107A

Abstract

The invention relates to a cleaning machine, which comprises a box body, a spray arm and a water pump, wherein the water pump at least comprises an impeller capable of pumping water in a washing cavity into the spray arm, the impeller comprises a central shaft and a plurality of blades which are arranged on the outer surface of the central shaft at intervals, the blades extend axially on the central shaft, at least the lower parts of the blades are gradually and smoothly bent along the rotating direction of the impeller, the blades comprise a first blade and a second blade, and the width of the first blade in the circumferential direction of the central shaft is larger than that of the second blade in the circumferential direction of the central shaft. The cleaning machine adopts the impeller of the open water pump with a new structure, so that the water flow thrown into the spray arm can form turbulence, the structure of the first blade and the second blade of the impeller on the central shaft is asymmetric, the speed of the water flow drawn by the impeller is uneven, the water flow forms a pulse effect, and the pulse water flow can further stir the water flow in the spray arm, thereby strengthening the turbulence intensity of the water flow and further improving the cleaning effect.

Description

Cleaning machine

Technical Field

The invention relates to a cleaning machine, in particular to a cleaning machine which can form turbulent flow and pulse water flow so as to improve the cleaning effect.

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 machine of the above-mentioned various forms generally has a washing function by lifting water by a water pump and spraying the water toward dishes in a washing 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 sprayed to the dishes is weak and not uniform enough, and when the number of dishes is large, the water flow cannot be covered, resulting in poor cleaning effect. The chinese patent with application number CN200710306898.5, "dish washing machine, especially household dish washing machine, provided with a device for improving decontamination effect" provides a vaporizing device for generating a fluid mist that can be introduced into a dish washing machine cavity to expand the washing area of the dishes and improve the uniformity of the washing medium, but such a structure still cannot solve the problem of weak impact force of the sprayed water flow. Therefore, the applicant has made a series of improvements to the washing machine with dish washing function, such as the "water tank type washing machine" of patent No. ZL201310749864.9 and the "water tank type washing machine" of ZL201310750968.1, which all use the rotary spray arm disposed at the bottom of the water tank body as a water spraying component to connect with the water pump, and the water pump sucks the water in the water tank body and then sprays the water from the spray arm to wash the object to be washed, however, only a single rotary spray arm is used to wash the object to be washed, there are dead corners which cannot be washed by the water sprayed from the rotary spray arm. The applicant also provides a turbulent flow cleaning water tank cleaning machine for fruits and vegetables, with the application number of CN201611094658.9, in the scheme, two water pumps are respectively arranged at two sides of the length direction of the spray arm, so that water flow sprayed by the spray arm forms annular rotary water flow above each water pump, namely a turbulent flow form, and the cleaning effect is improved. This structure needs to use two water pumps, has weakened product advantage on manufacturing cost, and because fruit vegetables wash the time, the rivers are with the arm submergence that sprays, consequently, the turbulent intensity of rivers can receive the influence, and then influences the cleaning performance.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cleaning machine capable of simultaneously forming turbulence and pulse water flow so as to improve the cleaning effect.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a cleaning machine, includes box, spray arm and water pump, the box has the washing chamber, the spray arm is located in this washing chamber, the water pump is including the impeller that can be with the water pumping spray arm in the washing chamber in at least, the impeller includes center pin and a plurality of interval arrangement on the center pin surface blade, the blade extends and the lower part is followed the rotation direction of impeller gradually smooth bending along axial on the center pin, its characterized in that: the blades comprise a first blade and a second blade, and the width of the first blade in the circumferential direction of the central shaft is larger than that of the second blade in the circumferential direction of the central shaft.

The spray arm is fixed in the washing cavity and is positioned at the bottom of the washing cavity.

In the above scheme, the first blade comprises a first upper section and a first lower section connected with the first upper section, the first upper section is perpendicular to the outer peripheral surface of the central shaft, and the first lower section is gradually and smoothly bent along the rotation direction of the impeller from top to bottom on the central shaft.

As a modification, the width of the first upper section is formed in a fan-shaped structure gradually increasing outward from the outer peripheral surface of the central shaft. By adopting the structure, the impeller can keep better water drawing capacity in the rotating process.

Preferably, the central angle of the fan-shaped structure formed by the first upper section is 5-90 degrees.

Preferably, at least one edge of the outer surface of the first lower section extends towards the bottom of the first lower section to form a transition surface which is gradually and smoothly curved along the rotation direction of the impeller. The structure can reduce interference between the first blade with larger thickness and water flow in the water drawing process, thereby ensuring that the whole impeller has better water drawing performance.

Further preferably, the two transition surfaces are respectively positioned at the side edges of the outer surface of the first lower section, and a joint surface with gradually reduced width from front to back is formed between the transition surface positioned at the upstream and the bottom of the transition surface positioned at the downstream according to the rotation direction of the impeller.

Preferably, the outer periphery of the top of the central shaft is turned outwards in the radial direction to form a first arc-shaped surface, the top of the blade gradually arches upwards from the inner side to the outer side to form a second arc-shaped surface, and the radian of the second arc-shaped surface is the same as that of the first arc-shaped surface.

In order to facilitate the arrangement and improve the water drawing performance, the bottom of the spray arm is provided with a water inlet, the top of the spray arm is provided with a water outlet, and the upper part of the impeller penetrates through the water inlet and can be rotatably positioned in the spray arm.

As an improvement, the middle part of the spray arm is provided with a water collecting area communicated with the water inlet, two sides of the water collecting area are respectively provided with annular flow passages communicated with the water collecting area, the part of each annular flow passage far away from the water collecting area is provided with a partition plate capable of breaking the annular flow passages, and the water outlet hole is arranged above the annular flow passages. By adopting the structure, the water flow turbulence and pulse intensity can be enhanced by being matched with the impeller structure, and the cleaning effect is improved.

Preferably, the water outlet holes are multiple and are obliquely arranged above the annular flow channel, the corresponding flow channel is divided into a first flow channel and a second flow channel by the partition plate, the water outlet holes are obliquely arranged above the first flow channel along the water flow direction according to the water flow direction, and the water outlet holes are obliquely arranged above the second flow channel along the water flow direction. The structure can greatly improve the water pressure and further improve the turbulence and the pulse intensity of water flow.

Preferably, at least two first blades are arranged on the central shaft, and at least one second blade is arranged between the two first blades. Preferably, two second blades are arranged at a distance between two first blades.

Compared with the prior art, the invention has the advantages that: the invention adopts the impeller of the open water pump with a new structure, the blades of the impeller extend along the axial direction on the central shaft and at least the lower part of the impeller is gradually and smoothly bent along the rotation direction of the impeller, so that the water flow thrown into the spray arm can form turbulence, the structures of the first blade and the second blade of the impeller on the central shaft are asymmetric, the speed of the water flow drawn by the impeller is uneven, thus the water flow forms a pulse effect, the pulse water flow can further stir the water flow in the spray arm, the turbulence intensity of the water flow is enhanced, and the cleaning effect is further improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of an assembly structure of a water pump and a spray arm according to an embodiment of the present invention;

FIG. 3 is a schematic view of a impeller according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

fig. 5 is a schematic view of a part of a spray arm according to an embodiment of the present invention.

Detailed Description

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

As shown in fig. 1 to 5, the cleaning machine of the present embodiment includes a housing 1, a shower arm 2 and a water pump 3, the housing 1 has a washing chamber 10, the shower arm 2 is disposed in the washing chamber 10 and is located at the bottom of the washing chamber 10, and the water pump 3 includes an impeller 31 capable of pumping water in the washing chamber 10 into the shower arm 2 and a motor 32 for powering the impeller 31. The impeller 31 includes a central shaft 311 and a plurality of blades 312 spaced apart from the central shaft 311, the blades 312 extending axially on the central shaft 311 and being gradually smoothly curved at least at a lower portion thereof in a rotation direction of the impeller 31; the center shaft 311 has a shaft hole 3110 through which the output shaft 321 of the motor 32 passes.

In the present embodiment, the blades 312 include a first blade 3121 and a second blade 3122, and the width of the first blade 3121 in the circumferential direction of the central shaft 311 is greater than the width of the second blade 3122 in the circumferential direction of the central shaft 311. Specifically, the first vane 3121 includes a first upper section 3123 and a first lower section 3124 connected to the first upper section 3123, the first upper section 3123 being disposed perpendicular to the outer circumferential surface of the central shaft 311, and the first lower section 3124 being gradually smoothly curved on the central shaft 311 from top to bottom in the rotation direction of the impeller 31. The width of the first upper section 3123 is gradually increased outward from the outer circumferential surface of the central shaft 311 to form a fan-shaped structure having a central angle of 5 to 90 °. The edge of the outer surface of the first lower section 3124 extends toward the bottom of the first lower section 3124 to form a transition surface 3125 that is gradually smoothly curved in the rotation direction of the impeller 31. The two transition surfaces 3125 are respectively located at the side edges of the outer surface of the first lower section 3124, and a junction surface 3126 with gradually decreasing width from front to back is formed between the upstream transition surface 3125 and the downstream transition surface 3125 according to the rotation direction of the impeller 31. The above structure can reduce interference between the first vane 3123 having a larger thickness and water flow during water drawing, thereby ensuring good water drawing performance of the impeller 31 as a whole.

The second blade 3122 includes a second upper segment 3128 and a second lower segment 3129 connected below the second upper segment 3128, and the specific structure is similar to the first blade 3121 and is not described herein. The top periphery of the central shaft 311 turns radially outwards to form a first arc-shaped surface 3111, the top of the blade 312 gradually arches upwards from inside to outside to form a second arc-shaped surface 3126, and the radian of the second arc-shaped surface 3126 is the same as that of the first arc-shaped surface 3111. A third arc surface 3127 is formed at the junction of the upper and lower sections of the middle of the vane 312, and the third arc surface 3127 is arranged concentrically with the second arc surface 3126. The central shaft 311 in the present embodiment is provided with two first blades 3121, and two second blades 3122 are provided between the two first blades 3121.

The spray arm 2 of this embodiment has a water inlet 21 at the bottom and a water outlet 22 at the top, and the upper part of the impeller 31 is rotatably positioned in the spray arm 2 through the water inlet 21. The middle part of the spray arm 2 is provided with a water collecting area 23 communicated with the water inlet 21, two sides of the water collecting area 23 are respectively provided with annular flow passages 24 communicated with the water collecting area 23, a partition plate 25 capable of breaking the annular flow passages 24 is arranged at the part of each annular flow passage 24 far away from the water collecting area 23, and the water outlet 22 is arranged above the annular flow passages 24. The water outlet 22 is arranged obliquely above the annular flow passage 24, the partition plate 25 divides the corresponding flow passage into a first flow passage 241 and a second flow passage 242, the water outlet 22 is arranged obliquely above the first flow passage 241 in the water flow direction according to the water flow direction, and the water outlet 22 is arranged above the second flow passage 242 in the opposite water flow direction. The structure can greatly improve the water pressure and further improve the turbulence and the pulse intensity of water flow.

The cleaning machine of the present embodiment adopts an impeller 31 of an open water pump with a new structure, where the blades 312 of the impeller 31 extend along the axial direction on the central shaft 311 and at least the lower portion of the impeller is gradually and smoothly curved along the rotation direction of the impeller 31, so that the water flow thrown into the spray arm 2 can form turbulence, while the structure of the first blades 3121 and the second blades 3122 of the impeller 31 on the central shaft 311 is asymmetric, so that the speed of the water flow drawn by the impeller 31 is uneven, thereby forming a pulse effect on the water flow, and the pulse water flow can further generate stirring effect on the water flow in the spray arm 2, thereby strengthening the turbulence intensity of the water flow, and further improving the cleaning effect.

Claims

1. The utility model provides a cleaning machine, includes box (1), spray arm (2) and water pump (3), box (1) has washing chamber (10), spray arm (2) are located in this washing chamber (10), water pump (3) are including impeller (31) in can will washing chamber (10) water pump income spray arm (2), impeller (31) include center pin (311) and a plurality of interval arrangement blade (312) on center pin (311) surface, its characterized in that: the blades (312) comprise a first blade (3121) and a second blade (3122), wherein the width of the first blade (3121) in the circumferential direction of the central shaft (311) is greater than the width of the second blade (3122) in the circumferential direction of the central shaft (311);

the first blade (3121) comprises a first upper section (3123) and a first lower section (3124) connected with the first upper section (3123), the first upper section (3123) is arranged perpendicular to the outer peripheral surface of the central shaft (311), and the first lower section (3124) is gradually and smoothly curved on the central shaft (311) from top to bottom along the rotation direction of the impeller (31);

the bottom of the spray arm (2) is provided with a water inlet (21), the top of the spray arm is provided with a water outlet (22), and the upper part of the impeller (31) penetrates through the water inlet (21) and is rotatably positioned in the spray arm (2); at least two first blades (3121) are arranged on the central shaft (311), and at least one second blade (3122) is arranged between the two first blades (3121).

2. The cleaning machine of claim 1, wherein: the width of the first upper section (3123) is gradually increased outward from the outer peripheral surface of the central shaft (311) to form a fan-shaped structure.

3. The cleaning machine of claim 2, wherein: the central angle of the fan-shaped structure formed by the first upper section (3123) is 5-90 degrees.

4. The cleaning machine of claim 1, wherein: at least one edge of the outer surface of the first lower section (3124) extends to the bottom of the first lower section (3124) to form a transition surface (3125) that is gradually smoothly curved in the rotation direction of the impeller (31).

5. The cleaning machine of claim 4, wherein: the number of the transition surfaces (3125) is two, the transition surfaces are respectively positioned at the side edges of the outer surface of the first lower section (3124), and a joint surface (3126) with gradually reduced width from front to back is formed between the transition surface (3125) positioned at the upstream and the bottom of the transition surface (3125) positioned at the downstream according to the rotation direction of the impeller (31).

6. The cleaning machine of any one of claims 1-5, wherein: the top periphery of the central shaft (311) is turned outwards along the radial direction to form a first arc-shaped surface (3111), the tops of the blades (312) are gradually arched upwards from the inner side outwards to form a second arc-shaped surface (3126), and the radian of the second arc-shaped surface (3126) is the same as that of the first arc-shaped surface (3111).

7. The cleaning machine of claim 1, wherein: the middle part of spray arm (2) is formed with collector region (23) that are linked together with water inlet (21), and the both sides of this collector region (23) have annular runner (24) that are linked together with collector region (23) respectively, and the part that keeps away from collector region (23) of each annular runner (24) is provided with baffle (25) that can break annular runner (24), the top of annular runner (24) is located in apopore (22).

8. The cleaning machine of claim 7, wherein: the water outlet holes (22) are formed in a plurality and are obliquely arranged above the annular flow channel (24), the partition plates (25) divide the corresponding flow channel into a first flow channel (241) and a second flow channel (242), the water outlet holes (22) are obliquely arranged above the first flow channel (241) along the water flow direction according to the water flow direction, and the water outlet holes (22) are arranged above the second flow channel (242) in the direction opposite to the water flow direction.