CN110833369A

CN110833369A - Cleaning machine

Info

Publication number: CN110833369A
Application number: CN201810959660.0A
Authority: CN
Inventors: 候修群; 魏本柱
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2020-02-25

Abstract

The invention relates to a cleaning machine which comprises a water tank body, a spraying arm, a motor shaft, a centrifugal impeller, a water supply mechanism and a flow guide piece, wherein the centrifugal impeller is arranged in the spraying arm and is connected with the upper end of the motor shaft, the motor shaft is vertically communicated, the lower end of the motor shaft is connected with the water supply mechanism, the flow guide piece is arranged below the spraying arm and is connected with a water inlet, a plurality of flow guide holes are arranged on the outer peripheral wall of the lower part of the flow guide piece at intervals, and the upper part of the flow guide piece is provided with a valve plate assembly capable of closing the lower end of the water inlet in a water input state of the. When the water supply device is used, the water inlet is closed through the valve plate assembly, a small amount of water is input into the motor axial spray arm to immerse the centrifugal impeller, the motor shaft is stopped to supply water after the centrifugal impeller is started, water flow continuously enters the flow guide piece under the action of negative pressure and drives the valve plate assembly to open the water inlet, continuous water flow supply is realized, bidirectional rotation of the spray arm can be realized through positive and negative rotation of the motor, and the cleaning effect is improved.

Description

Cleaning machine

Technical Field

The invention relates to the technical field of cleaning machines, in particular to a cleaning machine with a spraying arm capable of rotating in two directions.

Background

With the increasing living standard of people, the dish washing machine is used as a kitchen household appliance and is more and more introduced into families. The dish-washing machines on the market at present are generally divided into a table type dish-washing machine, a cabinet type dish-washing machine and a trough type dish-washing machine, wherein the table type dish-washing machine is an integral independent structure and is generally placed on a table top for use; the cabinet type dish washing machine is also an independent structure, but needs to be embedded into a kitchen cabinet for use; the sink dishwasher is combined with a sink and is generally installed in a kitchen cabinet for use.

For example, a structure disclosed in chinese patent "sink type cleaning machine" (application no: CN2013749864.9) with publication No. CN3735237B, the sink type cleaning machine includes a box body forming a washing space, the box body includes a sink body, the sink body is recessed at least at a central portion, a draining plate having the same shape as the recessed portion is covered on the recessed portion, a plurality of draining holes for draining are formed on the draining plate, a draining area is formed in a space between the recessed portion and the draining plate, the draining plate is flush with other portions of the bottom of the sink body, and a water pump for pumping water in the draining area to above the draining plate is disposed in the draining area. At present, the washing machine mainly uses the impact force of water flow to wash food residues on tableware, the tableware is generally vertically placed in a dish rack, and a spray arm rotates in one direction, so that the water flow approximately tangentially advances along the surface of the dish, and the food residues and the like are removed. After the water flow contacts with the dishes, the impact force can be greatly attenuated, and when the spray arm can only rotate towards one direction, the problems that one side of the dishes is cleaned and the other side of the dishes is not cleaned easily occur.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cleaning machine which can enable a spray arm to rotate in two directions so as to improve the cleaning effect aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a cleaning machine, includes basin body, spray arm, motor and motor shaft, thereby the inside cavity of basin body forms the washing space, the spray arm has water inlet and apopore and can locate in the washing space with rotating, the motor is located outside the basin body, the motor shaft is connected with the motor and stretches into in the spray arm, its characterized in that: also comprises

The centrifugal impeller is arranged in the spray arm, is connected with the upper end of the motor shaft and is used for dispersing water entering the water inlet to the water outlet hole and spraying out;

the motor shaft is vertically communicated, and the lower end of the motor shaft is connected with the water supply mechanism; and

the water diversion part is arranged below the spraying arm and connected with the water inlet, a plurality of water diversion holes are arranged on the outer peripheral wall of the lower part of the water diversion part at intervals, and a valve block assembly which can close the lower end of the water inlet under the water input state of the motor axial spraying arm and open the lower end of the water inlet under the starting state of the centrifugal impeller is arranged on the upper part of the water diversion part.

Preferably, a water collecting cavity is formed in the middle of the spray arm, flow guide channels are formed in two sides of the water collecting cavity in an extending mode along the length direction of the spray arm, the water inlet is formed in the lower wall surface of the spray arm and communicated with the water collecting cavity, and the water outlet holes are formed in a plurality of the water guide channels and are symmetrically arranged above the flow guide channels in the two sides of the water collecting cavity. The water outlet holes are symmetrically arranged on the spray arm to balance the recoil force of water flow when the spray arm rotates forwards and backwards, and the consistency of the washing effect on bowls and dishes when the spray arm rotates forwards and backwards is ensured.

In the invention, the centrifugal impeller is rotatably arranged in the water collecting cavity, and the upper port of the motor shaft penetrates through the centrifugal impeller and is exposed out of the water collecting cavity. The centrifugal impeller can be covered after water is discharged from the upper end opening of the motor shaft so as to drive the centrifugal impeller to work.

In order to facilitate assembly, the bottom of the flow guide part is connected with the bottom wall of the water tank body and is provided with a first assembly hole for a motor shaft to pass through, and a bearing sealing assembly capable of enabling the motor shaft to rotate relative to the flow guide part is arranged in the first assembly hole.

In each of the above aspects, the valve plate assembly comprises

The baffle is arranged at the middle part of the flow guide piece along the radial direction, and the middle part of the baffle is provided with a second assembly hole for a motor shaft to pass through;

the first valve plate can be rotatably arranged on the first side of the baffle and can seal the space between the first side of the baffle and the corresponding inner wall of the flow guide piece;

the second valve sheet can be rotatably arranged on the second side of the baffle and can seal the space between the second side of the baffle and the corresponding inner wall of the flow guide piece; and

and the check ring is arranged on the inner wall of the flow guide piece along the circumferential direction and can bear the bottom edge of the first valve plate and the second valve plate.

When the cleaning machine is opened, the first valve block, the second valve block leans on self gravity to fall to and seals the water inlet of spray arm on the retaining ring, at this moment, input a small amount of water in the hollow motor axial spray arm to with centrifugal impeller submergence, centrifugal impeller will constantly be with rivers transport toward the apopore blowout when rotatory like this, and in centrifugal impeller's to rivers dispersion, produce the negative pressure and upwards inhale the water in the basin body from the guiding hole of guiding piece in the chamber of catchmenting, inspiratory rivers are with first valve block, the second valve block jack-up that makes progress, thereby open the water inlet, realize the washing of reciprocal utilization of rivers, after centrifugal impeller normally pumps water, the motor shaft just can stop to catchmenting in the chamber and supply water.

For convenience in assembly, two sides of the baffle are respectively inwards recessed to form installation notches, correspondingly, assembly blocks which can be rotatably inserted into the corresponding installation notches are arranged on the side walls of the first valve plate and the second valve plate in a protruding mode, and connecting shafts which can penetrate through the corresponding installation notches and the assembly blocks to rotatably connect the first valve plate and the second valve plate to the baffle are arranged on the baffle.

As an improvement, the cleaning machine also comprises a speed reducing structure which can reduce the rotating speed of the spray arm through water flow cutting, and the speed reducing structure is arranged at the upstream of the water inlet of the spray arm according to the flowing direction of the water flow. Because the invention cancels the axial flow structure of the impeller and adopts a pure centrifugal impeller, the rotating speed of the centrifugal impeller is higher, and if the rotating speed of the spray arm is too high, the bidirectional rotation of the spray arm is not beneficial.

Preferably, the water inlet edge of spray arm outwards extends along circumference and is formed with the first U-shaped groove that surrounds the water inlet and arrange, it has the through-hole that supplies rivers to get into first U-shaped groove to open on the water inlet inner wall, thereby interval arrangement has a plurality of can reduce the blade that sprays the arm rotational speed at the blade that sprays cutting rivers under the arm rotation state on the inner wall that the water inlet side was kept away from in first U-shaped groove, this blade with first U-shaped groove constitutes jointly the speed reduction structure. The speed reduction structure only needs a small amount of water, the speed reduction effect of the spray arm can be achieved through blade cutting water flow, and the speed reduction structure is simple and practical.

For the convenience of connection, the spray arm can be rotationally arranged on the flow guide part through the buckle, the upper end of the buckle is rotationally connected with the speed reduction structure, and the lower end of the buckle is in limit connection with the upper end of the flow guide part.

Preferably, a second U-shaped groove capable of being reversely buckled in the first U-shaped groove in a rotatable manner is formed at the upper part of the buckle, an internal thread is formed on the inner wall of the lower part of the buckle, and correspondingly, an external thread matched with the internal thread is formed on the outer peripheral wall of the upper end of the flow guide piece.

Compared with the prior art, the invention has the advantages that: the invention cancels the structure of combining axial flow with a centrifugal impeller used in the existing water tank type cleaning machine, adopts an independent centrifugal impeller structure, and simultaneously, in order to ensure that the centrifugal impeller can smoothly pump water into the spray arm, the motor shaft is arranged into a hollow structure, when in use, the water inlet is closed through the valve plate assembly, a small amount of water is input into the spray arm axially by the motor to immerse the centrifugal impeller, the water supply of the motor shaft is stopped after the centrifugal impeller is started, the water flow continuously enters the flow guide piece under the action of negative pressure and drives the valve plate assembly to open the water inlet, thereby realizing the continuous supply of the water flow.

Drawings

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

FIG. 2 is a schematic view of a connection structure of a motor, a flow guide member and a spray arm in the embodiment of the invention;

FIG. 3 is a cross-sectional view of FIG. 2 (including the motor shaft);

FIG. 4 is a schematic structural view of a baffle member according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4 (with the first valve sheet hidden);

FIG. 6 is a cross-sectional view of a spray arm in an embodiment of the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 6;

fig. 8 is a schematic structural diagram of a buckle according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 8, the cleaning machine of the present embodiment includes a water tank body 1, a spray arm 2, a motor 3, a motor shaft 31, a centrifugal impeller 4, a water supply mechanism 5, and a deflector 6, wherein the water tank body 1 is hollow to form a washing space, and the spray arm 2 is rotatably disposed at the bottom of the washing space. The middle part of the spray arm 2 is formed with a water collecting cavity 20, two sides of the water collecting cavity 20 extend to two sides along the length direction of the spray arm 2 to form a flow guide channel 21, a water inlet 22 communicated with the water collecting cavity 20 is arranged on the lower wall surface of the middle part of the spray arm 2, a plurality of water outlet holes 23 which are arranged at intervals and communicated with the flow guide channel 21 are arranged on the upper wall surface of the spray arm 2 corresponding to the flow guide channel 21, and the water outlet holes 23 above the flow guide channels 21 on two sides of the water collecting cavity 20 are symmetrically arranged.

In this embodiment, the motor 3 is disposed below the water tank body 1, the motor shaft 31 is connected to the motor 3, and the upper end of the motor shaft 31 extends into the water collecting cavity 20 of the spray arm 2. The centrifugal impeller 4 is arranged in the water collecting cavity 20 of the spray arm 2 and connected with the upper end of the motor shaft 31 and used for dispersing water entering the water inlet 22 to the water outlet 23 and spraying out, the water supply mechanism 5 at least comprises a water pipe 51 connected with a water source, the motor shaft 31 is vertically communicated and the lower end of the motor shaft 31 is connected with the water pipe 51, the flow guide part 6 is arranged below the spray arm 2 and connected with the water inlet 22, a plurality of flow guide holes 61 are arranged on the outer peripheral wall of the lower part of the flow guide part 6 at intervals, and the upper part of the flow guide part 6 is provided with a valve plate assembly 7 capable of closing the lower end of the water inlet 22 and opening the lower end of the water inlet 22 when.

The centrifugal impeller 4 of the present embodiment can be rotatably disposed in the water collecting cavity 20, the upper port of the motor shaft 31 penetrates through the centrifugal impeller 4 and is exposed out of the water collecting cavity 20, and the upper port of the motor shaft 31 can cover the centrifugal impeller 4 after water is discharged, so as to drive the centrifugal impeller 4 to work. For the convenience of assembly, the bottom of the deflector 6 is connected to the bottom wall of the tub 1 and has a first assembly hole 62 for the motor shaft 31 to pass through, and a bearing seal assembly 63 for rotating the motor shaft 31 with respect to the deflector 6 is provided in the first assembly hole 62.

The valve plate assembly 7 of this embodiment includes a baffle 71, a first valve plate 72, a second valve plate 73 and a retainer ring 74, the baffle 71 is radially disposed in the middle of the flow guide member 6, the middle of the baffle 71 is provided with a second assembly hole 711 for the motor shaft 31 to pass through, the first valve plate 72 is rotatably disposed on the first side of the baffle 71 and seals between the first side of the baffle 71 and the corresponding inner wall of the flow guide member 6, the second valve plate 73 is rotatably disposed on the second side of the baffle 71 and seals between the second side of the baffle 71 and the corresponding inner wall of the flow guide member 6, and the retainer ring 74 is circumferentially disposed on the inner wall of the flow guide member 6 and can be supported on the bottom edges of the first valve plate 72 and the second valve plate 73, thereby preventing water from flowing downward from the water inlet 22 of the. For convenience of assembly, two sides of the baffle 71 are recessed inwards to form mounting notches 712, correspondingly, mounting blocks 723 which can be rotatably inserted into the corresponding mounting notches 712 are arranged on the side walls of the first valve plate 72 and the second valve plate 73 in a protruding mode, and a connecting shaft 713 which can penetrate through the corresponding mounting notches 712 and the mounting blocks 723 to rotatably connect the first valve plate 72 and the second valve plate 73 to the baffle 71 is arranged on the baffle 71.

The embodiment is also provided with a speed reducing structure 8 which can reduce the rotating speed of the spray arm 2 through water flow cutting, and the speed reducing structure 8 is arranged at the upstream of the water inlet 22 of the spray arm 2 according to the flowing direction of the water flow. Because this embodiment has cancelled the axial compressor structure of impeller and has adopted simple centrifugal impeller 4, 4 rotational speeds of centrifugal impeller are great, and if the 2 rotational speeds of spray arm are too big, realize two-way rotation unfavorable to spray arm 2, set up above-mentioned reduction structure 8, can effectively balance the 2 rotational speeds of spray arm, under the prerequisite that keeps high-efficient washing effect, do benefit to spray arm 2 switching-over rotation. The water inlet 22 edge of spray arm 2 is formed with the first U-shaped groove 24 that surrounds water inlet 22 and arrange along the outside extension of circumference, it has the through-hole 221 that supplies rivers to get into in the first U-shaped groove 24 to open on the water inlet 22 inner wall, thereby interval arrangement has a plurality of can cut the blade 241 of rivers reduction spray arm 2 rotational speed under the spray arm 2 pivoted state on the inner wall of water inlet 22 side is kept away from to first U-shaped groove 24, this blade 241 constitutes above-mentioned reduction structure 8 with first U-shaped groove 24 jointly, this reduction structure only needs a small amount of water, can realize spray arm 2 speed reduction effect through blade 241 cutting rivers, moreover, the steam generator is simple in structure, and is practical. For the convenience of being connected, spray arm 2 can locate water conservancy diversion spare 6 with rotating through buckle 9 on, this buckle 9 upper end rotates with speed reduction structure 8 to be connected, and this buckle 9 lower extreme is connected with water conservancy diversion spare 6 upper end is spacing. Specifically, the upper part of the buckle 9 is formed with a second U-shaped groove 91 which can be reversely buckled in the first U-shaped groove 24 in a rotating manner, the inner wall of the lower part of the buckle 9 is provided with an internal thread 92, and correspondingly, the outer peripheral wall of the upper end of the flow guide member 6 is provided with an external thread 64 matched with the internal thread 92.

When the cleaning machine of the embodiment is used, when the cleaning machine is opened, the first valve plate 73 and the second valve plate 73 fall onto the retainer ring 74 by means of self gravity to seal the water inlet 22 of the spray arm 2, at the moment, a small amount of water is input into the water collecting cavity 20 of the spray arm 2 by the hollow motor shaft 31 until the centrifugal impeller 4 is immersed, so that the water can be continuously conveyed to the water outlet hole 23 to be sprayed out when the centrifugal impeller 4 rotates, water in the water tank body 1 is upwards sucked from the water guide hole 61 of the water guide member 6 by negative pressure generated in the water collecting cavity 20 while the water is dispersed by the centrifugal impeller 4, the first valve plate 72 and the second valve plate 73 are upwards jacked by the sucked water flow, the water inlet 22 is opened, the water flow is repeatedly utilized and washed, and after the centrifugal impeller 4 pumps water normally, the motor shaft 31 can stop supplying water into the water collecting cavity 20. Because this embodiment realizes that rivers are carried from bottom to top and can break away from axial compressor impeller work, consequently, just can realize the two-way rotation of spray arm 2 through the positive and negative rotation of motor 3 to cleaning performance has been improved.

Claims

1. The utility model provides a cleaning machine, includes basin body (1), spray arm (2), motor (3) and motor shaft (31), thereby the inside cavity of basin body (1) forms the washing space, spray arm (2) have water inlet (22) and apopore (23) and can locate the washing space with rotating, outside basin body (1) was located in motor (3), motor shaft (31) were connected with motor (3) and stretched into spray arm (2), its characterized in that: also comprises

The centrifugal impeller (4) is arranged in the spray arm (2), is connected with the upper end of the motor shaft (31), and is used for dispersing water entering the water inlet (22) to the water outlet (23) and spraying the water;

the motor shaft (31) penetrates through the water supply mechanism (5) up and down, and the lower end of the motor shaft is connected with the water supply mechanism (5); and

water conservancy diversion spare (6), locate spray arm (2) below and be connected with water inlet (22), interval arrangement has a plurality of water conservancy diversion holes (61) on the periphery wall of water conservancy diversion spare (6) lower part, water conservancy diversion spare (6) upper portion is provided with can be closed water inlet (22) lower extreme and valve block subassembly (7) of opening water inlet (22) lower extreme under centrifugal impeller (4) the starting state to spray arm (2) input water state at motor shaft (31).

2. The cleaning machine of claim 1, wherein: the middle part of spray arm (2) is formed with water collecting cavity (20), and the both sides in this water collecting cavity (20) extend along spray arm (2) length direction respectively and are formed with water conservancy diversion passageway (21), water inlet (22) are seted up on the lower wall of spray arm (2) and are linked together with water collecting cavity (20), apopore (23) are a plurality of and at water conservancy diversion passageway (21) top symmetrical arrangement of water collecting cavity (20) both sides.

3. The cleaning machine of claim 2, wherein: the centrifugal impeller (4) can be rotatably arranged in the water collecting cavity (20), and the upper port of the motor shaft (31) penetrates through the centrifugal impeller (4) to be exposed out of the water collecting cavity (20).

4. The cleaning machine of claim 1, wherein: the bottom of the flow guide part (6) is connected with the bottom wall of the water tank body (1) and is provided with a first assembly hole (62) for a motor shaft (31) to pass through, and a bearing sealing assembly (63) capable of enabling the motor shaft (31) to rotate relative to the flow guide part (6) is arranged in the first assembly hole (62).

5. The cleaning machine of claim 1, wherein: the valve plate component (7) comprises

The baffle (71) is arranged at the middle part of the flow guide piece (6) along the radial direction, and the middle part of the baffle is provided with a second assembly hole (711) for the motor shaft (31) to pass through;

the first valve plate (72) is rotatably arranged on the first side of the baffle plate (71) and can seal the first side of the baffle plate (71) and the corresponding inner wall of the flow guide part (6);

the second valve plate (73) can be rotatably arranged on the second side of the baffle plate (71) and can seal the second side of the baffle plate (71) and the corresponding inner wall of the flow guide part (6); and

and the retainer ring (74) is arranged on the inner wall of the flow guide piece (6) along the circumferential direction and can bear the bottom edges of the first valve plate (72) and the second valve plate (73).

6. The cleaning machine of claim 5, wherein: the two sides of the baffle (71) are respectively inwards recessed to form mounting notches (712), correspondingly, the side walls of the first valve plate (72) and the second valve plate (73) are convexly provided with assembling blocks (723) which can be rotatably inserted into the corresponding mounting notches (713), and the baffle (71) is provided with a connecting shaft (713) which can penetrate through the corresponding mounting notches (712) and the assembling blocks (723) to rotatably connect the first valve plate (72) and the second valve plate (73) to the baffle (71).

7. The cleaning machine of any one of claims 1-6, wherein: the water spray device is characterized by further comprising a speed reducing structure (8) capable of reducing the rotating speed of the spray arm (2) through water flow cutting, wherein the speed reducing structure (8) is arranged on the upstream of the water inlet of the spray arm (2) according to the flowing direction of water flow.

8. The cleaning machine of claim 7, wherein: the water inlet (22) edge of spray arm (2) outwards extends along circumference and is formed with first U-shaped groove (24) that surround water inlet (22) and arrange, it has through-hole (221) that supplies rivers to get into in first U-shaped groove (24) to open on water inlet (22) inner wall, thereby interval arrangement has a plurality of can cut rivers and reduce blade (241) of spray arm (2) rotational speed under spray arm (2) rotation state on the inner wall of water inlet (22) side in first U-shaped groove (24), this blade (241) with first U-shaped groove (24) constitute jointly speed reduction structure (8).

9. The cleaning machine of claim 8, wherein: spray arm (2) can locate water conservancy diversion spare (6) through buckle (9) with rotating on, this buckle (9) upper end with speed reduction structure (8) rotate and are connected, this buckle (9) lower extreme with water conservancy diversion spare (6) upper end limit is connected.

10. The cleaning machine of claim 9, wherein: the upper portion of the buckle (9) is provided with a second U-shaped groove (91) which can be reversely buckled in the first U-shaped groove (24) in a rotating mode, an inner thread (92) is arranged on the inner wall of the lower portion of the buckle (9), and correspondingly, an outer thread (64) matched with the inner thread (92) is arranged on the outer peripheral wall of the upper end of the flow guide piece (6).