CN219206803U - Spraying structure for cleaning machine and cleaning machine - Google Patents

Abstract

The utility model relates to a spray structure for a cleaning machine and the cleaning machine, and the spray structure for the cleaning machine comprises a flow guide seat; a spray arm; the water inlet pipeline of the spray arm can be rotationally restrained on the inner annular wall of the guide seat, a gap is reserved between the water inlet pipeline and the inner annular wall of the guide seat, and the spray arm also comprises an air supply channel for supplying air to the gap. Through the air feed passageway to the internal air feed of interval to form the air bed between the interior rampart of guide holder and the inlet channel, at spray arm pivoted in-process, avoid the friction between interior rampart and the inlet channel, improved spray arm pivoted smoothness nature, in addition, reduced the possibility that leads to the inlet channel to damage because of the friction, more reliable and practical. In addition, the gas can be mixed into the water flow, the water flow sprayed through the spray holes of the spray arm is sprayed outwards, bubbles are mixed in the water flow sprayed through the spray holes, the bubbles in the water flow contact the object to be cleaned to generate cracking and generate larger impact force, and a better cleaning effect is achieved.

Description

Spraying structure for cleaning machine and cleaning machine

Technical Field

The utility model belongs to the technical field of cleaning machines, and particularly relates to a spraying structure for a cleaning machine and the cleaning machine.

Background

A washer is a device that sprays cold water or hot water to dishes to remove dirt adhering to the dishes or fruits and to wash the dishes or fruits. The existing spray type cleaning machine generally realizes the spraying in all directions by rotating a spray arm.

The present spray arm, such as the chinese patent of the applicant's prior application, an open water pump and a washer using the same, the patent No. zl202022221092.X (grant publication No. CN 213775713U) discloses an open water pump comprising a spray arm and an impeller assembly, wherein the central portion of the spray arm has a water collecting cavity, two sides of the spray arm have flow passages communicated with the water collecting cavity, the upper portion of the impeller assembly is a centrifugal impeller rotatably disposed in the water collecting cavity, the spray arm is supported on the inner bottom wall of the box through a guide seat, the motor is disposed on the outer bottom wall of the box, and the output shaft extends into the washing cavity through the box. When the spray arm rotates relative to the guide seat, friction can occur due to contact with the guide seat, and the spray arm can be damaged and fall off under severe conditions.

Accordingly, there is a need for further improvements to existing spray structures.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide a spray structure for a cleaning machine, which reduces friction loss between a spray arm and a deflector, aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide a cleaning machine with the spraying structure.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a spray structure for cleaning machine, including:

the guide seat is annular, the inner annular wall of the guide seat surrounds an inner cavity, and the guide seat is provided with a water inlet channel communicated with the inner cavity;

the spray arm is provided with a water inlet pipeline, a water flow channel communicated with the water inlet pipeline is arranged in the spray arm, and a spray hole communicated with the water flow channel is formed in a wall plate of the spray arm;

the spray arm is characterized in that a water inlet pipeline of the spray arm can be rotationally restrained on the inner annular wall of the guide seat, a space is reserved between the water inlet pipeline and the inner annular wall of the guide seat, the spray structure further comprises an air supply channel for supplying air into the space, and the air supply channel is positioned at the upstream of the space along an air flow path.

The space is reserved between the inner annular wall of the guide seat and the water inlet pipeline of the spray structure, and air is supplied to the space through the air supply channel, so that an air layer is formed between the inner annular wall of the guide seat and the water inlet pipeline, friction between the inner annular wall and the water inlet pipeline is avoided in the rotation process of the spray arm, the smoothness of rotation of the spray arm is improved, in addition, the risk that the water inlet pipeline is damaged due to friction and then the spray arm falls off is reduced, and the spray structure is more reliable and practical.

And an air flow layer is formed between the contact surfaces of the guide seat and the spray arm, and meanwhile, air flows to the spray arm along with water flow, so that after air and liquid are mixed, the cleaning effect is improved.

The air supply channel is additionally arranged and can also be arranged in the flow guide seat, but preferably, the air supply channel is hollow in the flow guide seat and is positioned at the periphery of the inner cavity, and the flow guide seat is provided with an air inlet communicated with the air supply channel and an air outlet communicated with the air supply channel and the interval.

In order to further reduce friction between the contact surfaces of the inner annular wall of the guide seat and the water inlet pipe of the spray arm, the water inlet pipe is positioned at the bottom of the spray arm, an extending plate extending outwards laterally is arranged at a position, adjacent to the periphery of the bottom, of the water inlet pipe, the extending plate extends along the periphery of the water inlet pipe, a groove is formed in the outer recess of the side wall of the inner cavity, a first gap is reserved between the extending plate and the top wall plate of the groove, a second gap is reserved between the side wall of the water inlet pipe and the inner annular wall of the guide seat, the first gap and the second gap are communicated to form the gap, and the air outlet is positioned on the top wall plate of the groove.

In order to enable the spray arm to rotate smoothly, a plurality of air outlets are arranged at intervals along the circumferential direction of the top wall plate. Therefore, the air is discharged into the space through each air outlet, and friction between the water inlet pipeline and the flow guiding seat is better reduced.

The air inlet is arranged at various positions, and can be arranged at the bottom or at the side, but preferably, the air inlet is formed at the bottom of the flow guiding seat in an open way.

For better gas introduction to the inlet, a fan wheel for letting in a gas flow into the gas supply channel is also included, which fan wheel is arranged rotatable relative to the deflector seat.

The fan wheel may be disposed below the baffle seat or above the baffle seat, but preferably is located below the baffle seat and upstream of the air supply passage along the airflow flow path.

In order to better guide the gas from the chamber into the gas supply channel, the device further comprises a volute connected with the flow guide seat, a containing cavity communicated with the inner cavity is formed in the volute, the volute is provided with a gas guide channel communicated with the gas supply channel, the gas guide channel is positioned on the periphery of the containing cavity, and along the gas flow path, the gas guide channel is positioned at the upstream of the gas supply channel.

In order to better direct the air flow into the air supply channel while protecting the fan impeller, the deflector is provided with a housing having inside a chamber housing the fan impeller, which chamber is in fluid communication with the air guide channel, which chamber is located upstream of the air guide channel along the air flow path.

The utility model solves the second technical problem by adopting the technical proposal that: the cleaning machine with the spraying structure is characterized in that: the water-based washing device comprises a box body with a washing chamber inside, and a flow guide seat of the spraying structure is relatively fixed at the inner bottom of the box body.

Compared with the prior art, the utility model has the advantages that: the space is reserved between the inner annular wall of the guide seat and the water inlet pipeline of the spray structure, and air is supplied to the space through the air supply channel, so that an air layer is formed between the inner annular wall of the guide seat and the water inlet pipeline, and the air layer is more reliable and practical because of the fact that direct contact friction between the inner annular wall and the water inlet pipeline is avoided in the rotating process of the spray arm, the rotating smoothness of the spray arm is improved, and the risk that the water inlet pipeline is damaged and then the spray arm falls off due to friction is reduced. In addition, the gas can be mixed into water flow, the water flow sprayed through the spraying holes of the spraying arm is mixed with bubbles, when the water flow is sprayed to the object to be cleaned, the bubbles in the water flow contact the object to be cleaned to generate cracking and generate larger impact force, and stubborn stains on the object to be cleaned can be dispersed, so that a better cleaning effect is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a spray structure of the present embodiment;

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

FIG. 3 is an enlarged schematic view of the portion I in FIG. 2

Fig. 4 is another angular cross-sectional view of fig. 1.

Detailed Description

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

As shown in fig. 1 to 4, the washing machine of the present embodiment is used for washing dishes or vegetables. The aforementioned washer includes a tank (not shown) and a spray structure. Wherein, the inside of box has the washing cavity, sprays the structure setting in the interior bottom of box.

As shown in fig. 2 to 4, the spray structure of the present embodiment includes a deflector seat 1, a spray arm 2, a volute 3, an impeller assembly 4, a driving mechanism, and a fan impeller 6. The guide seat 1 is annular and is fixed at the bottom of the washing chamber. The annular wall of the guide seat 1 surrounds an inner cavity 10, and the bottom of the guide seat 1 is provided with a water inlet channel 11 communicated with the inner cavity 10.

As shown in fig. 2 to 4, the spray arm 2 is rotatably disposed at an upper portion of the deflector seat 1, and the spray arm 2 has a water flow passage 20 communicating with the inner cavity 10 inside, and a spray hole 201 communicating with the water flow passage 20 is formed in a wall plate of the spray arm 2. In the present embodiment, the shower holes 201 are opened in the top wall of the shower arm 2. In this embodiment, the bottom of the spray arm 2 has a water inlet pipe 21 communicating the water flow channel 20 and the inner cavity 10, the water inlet pipe 21 of the spray arm 2 is rotatably restrained on the inner annular wall of the diversion seat 1, a space 5 is reserved between the water inlet pipe and the inner annular wall of the diversion seat 1, an air supply channel 12 located at the periphery of the inner cavity 10 is formed in the inner cavity of the diversion seat 1, the air supply channel 12 is used for supplying air into the space 5, and along the air flow path, the air supply channel 12 is located at the upstream of the space 5. The guide seat 1 has an air inlet 121 communicating with the air supply passage 12, and an air outlet 122 communicating between the air supply passage 12 and the inner chamber 10. As shown in fig. 2, the bottom of the air supply channel 12 is opened to form the aforementioned air inlet 121, and the air inlet 121 is annular.

In this embodiment, as shown in fig. 3 and 4, the bottom periphery of the water inlet pipe 21 has an extension plate 211 extending laterally outward, the inner side wall of the inner cavity 10 is recessed outward to form a groove 101, the extension plate 211 is located in the groove 101, a first gap 51 is left between the extension plate 211 and the top wall plate 1011 of the groove 101 for passing air flow, and the air outlet 122 is located on the top wall plate 1011 of the groove 101. The air outlets 122 are plural and are spaced apart along the circumference of the top wall plate 1011. In addition, a second gap 52 is left between the side wall of the water inlet pipe 21 and the inner annular wall of the diversion seat 1, and the first gap 51 is located below the second gap 52 and is communicated with the second gap 52 to form the aforementioned interval 5. Along the airflow path, the air outlet 122 is located upstream of the water inlet pipe 21, and the airflow flowing out through the air outlet 122 flows into the water inlet pipe 21 after passing through the space 5.

As shown in fig. 2, the scroll 3 is located under the guide seat 1, and the scroll 3 has a chamber 30 therein in communication with the inner chamber 10, and a sidewall of the scroll 3 has a first water inlet 301, and the chamber 30 is located upstream of the inner chamber 10 along the water flow path. The impeller assembly 4 is used for pumping water flowing in from the first water inlet 301 to the impeller assembly 4 in the water flow channel 20 of the spray arm 2, the impeller assembly 4 comprises an axial flow impeller 41 positioned in the inner cavity 10 and a centrifugal impeller 42 positioned in the accommodating cavity 30 of the volute 3, the axial flow impeller 41 and the centrifugal impeller 42 are coaxially arranged and rotate around the axis of the output shaft of the driving mechanism under the driving of the driving mechanism, the driving mechanism of the embodiment is a motor 9, the output shaft 91 of the motor 9 extends along the up-down direction, and the axial flow impeller 41 and the centrifugal impeller 42 are vertically arranged at intervals and are fixedly penetrated on the output shaft 91 of the motor 9. In this way, under the action of the motor 9, the impeller assembly 4 makes the water entering through the first water inlet 301 enter the cavity 30 of the volute 3, pumped into the water flow channel 20 of the spray arm 2 through the water inlet pipeline 21, and finally sprayed upwards through the spray holes 201.

In order to facilitate the air supply into the air inlet 121, the volute 3 has an air guide channel 31 and a connecting channel 32, the connecting channel 32 is located above the cavity 30, the top of the connecting channel 32 has an air passing port 321 communicating with the air inlet 121, along the air flow path, the connecting channel 32 is located between the air guide channel 31 and the air inlet 121 of the air supply channel 12, and the air guide channel 31 is located upstream of the air supply channel 12. The air guide channel 31 is located at the peripheral side of the cavity 30 and below the connecting channel 32. In the present embodiment, there are two air guide passages 31, which are arranged at intervals along the circumferential direction of the scroll case 3. In addition, the aforementioned volute 3 has a second water inlet 33 that communicates with the inner chamber 10 of the guide seat 1, and the second water inlet 33 is independent of the air guide channel 31. The second water inlet 33 of the present embodiment is located above the cavity 30 and beside the air guide channel 31.

In the present embodiment, the air guiding seat 1 is provided with a housing 7, the housing 7 is located under the volute 3, and a chamber 70 for accommodating the fan impeller 6 is provided inside the housing 7, so that the fan impeller 6 is located under the air guiding seat 1 and under the impeller assembly 4. The chamber 70 is in fluid communication with the air guide channel 31 and has an air inlet, and along the air flow path, the chamber 70 is located upstream of the air guide channel 31 and the fan wheel 6 is located upstream of the air inlet 121. The fan impeller 6 is mounted on the output shaft 91 of the motor 9 and is driven by the motor 9 to rotate about the axis of the motor 9, so that the air flow in the chamber 70 can flow into the air inlet 121.

The working process of the spraying structure is as follows:

when the motor 9 works, the fan impeller 6 and the impeller assembly 4 work simultaneously, under the action of the fan impeller 6, air flow can enter the cavity 70 through the air inlet, then sequentially enter the air guide channel 31 through the air guide channel 31 and the connecting channel 32, then flow into the first gap 51 through the air outlet 122, air is supplied between the water inlet pipeline of the spray arm and the inner annular wall of the guide seat, and direct contact friction between the water inlet pipeline and the inner annular wall of the guide seat is avoided; in addition, the gas after passing through the first gap 51 enters the inner cavity 10, and the flow path of the gas flow is specifically referred to as the direction indicated by the arrow in fig. 4; when the impeller assembly 4 works, water is pumped into the containing cavity 30 of the volute 3 through the first water inlet 301 under the action of the centrifugal impeller 42 of the impeller assembly 4 and then enters the inner cavity 10, and is pumped into the inner cavity 10 of the guide seat 1 through the second water inlet 33 under the action of the axial flow impeller 41 of the impeller assembly 4, the flowing direction of the water flow is shown by the direction indicated by the hollow arrow in fig. 2, then the water flow in the inner cavity 10 is mixed with gas, and then enters the spray arm 2 together, and then is sprayed upwards through the spray holes 201 of the spray arm 2, bubbles are mixed in the water flow sprayed through the spray holes 201, and when the water flow is sprayed to objects to be cleaned such as dishes, the bubbles in the water flow contact the dishes and generate larger impact force, so that the stubborn stains on the dishes can be dispersed, and a better cleaning effect is achieved.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims (10)

1. A spray structure for cleaning machine, including:

the guide seat (1) is annular, the inner annular wall of the guide seat surrounds an inner cavity (10), and the guide seat is provided with a water inlet channel (11) communicated with the inner cavity (10);

a spray arm (2) which is provided with a water inlet pipeline (21), a water flow channel (20) communicated with the water inlet pipeline (21) is arranged in the spray arm, and a spray hole (201) communicated with the water flow channel (20) is arranged on a wall plate of the spray arm (2);

the spray arm (2) is characterized in that a water inlet pipeline (21) can be rotationally restrained on the inner annular wall of the guide seat (1), a space (5) is reserved between the water inlet pipeline and the inner annular wall of the guide seat (1), the spray structure further comprises a gas supply channel (12) for supplying gas into the space (5), and the gas supply channel (12) is positioned at the upstream of the space (5) along the gas flow path.

2. The spray structure of claim 1, wherein: the inside cavity of guide holder (1) is formed with air feed passageway (12), air feed passageway (12) are located the periphery of inner chamber (10), and this guide holder (1) set up with air inlet (121) that air feed passageway (12) are linked together and the gas outlet (122) of this air feed passageway (12) and interval (5) of intercommunication.

3. The spray structure of claim 2, wherein: the water inlet pipeline (21) is located at the bottom of the spray arm (2), an extending plate (211) extending outwards laterally is arranged at a position, adjacent to the periphery of the bottom, of the water inlet pipeline (21), the extending plate (211) extends along the periphery of the water inlet pipeline (21), a groove (101) is formed in the outer recess of the side wall of the inner cavity (10), the extending plate (211) is located in the groove (101), a first gap (51) is reserved between the extending plate (211) and the top wall plate (1011) of the groove (101), a second gap (52) is reserved between the side wall of the water inlet pipeline (21) and the inner annular wall of the flow guide seat (1), the first gap (51) and the second gap (52) are communicated to form the interval (5), and the air outlet (122) is located in the top wall plate (1011) of the groove (101).

4. A spray structure according to claim 3, wherein: the plurality of air outlets (122) are arranged at intervals along the circumferential direction of the top wall plate (1011).

5. The spray structure of claim 2, wherein: the bottom of the flow guiding seat (1) is open and is provided with the air inlet (121).

6. The spray structure of any one of claims 1 to 5, wherein: a fan wheel (6) for letting in an air flow into the air supply channel (12), the fan wheel (6) being arranged rotatable relative to the deflector (1).

7. The spray structure of claim 6, wherein: the fan impeller (6) is positioned below the guide seat (1) and along the airflow flow path, and the fan impeller (6) is positioned upstream of the air supply channel (12).

8. The spray structure of claim 7, wherein: the air guide device is characterized by further comprising a volute (3) connected with the flow guide seat (1), wherein a containing cavity (30) communicated with the inner cavity (10) is formed in the volute (3), an air guide channel (31) communicated with the air supply channel (12) is formed in the volute (3), the air guide channel (31) is located on the periphery of the containing cavity (30) and along an airflow flowing path, and the air guide channel (31) is located on the upstream of the air supply channel (12).

9. The spray structure of claim 8, wherein: the air guide seat (1) is provided with a shell (7), a cavity (70) for accommodating the fan impeller (6) is formed in the shell (7), the cavity (70) is in fluid communication with the air guide channel (31), and the cavity (70) is located upstream of the air guide channel (31) along an airflow flow path.

10. A cleaning machine having the shower structure as claimed in any one of claims 1 to 9, characterized in that: the water-based washing device comprises a box body with a washing chamber inside, and a flow guide seat (1) of the spraying structure is relatively fixed at the inner bottom of the box body.

Images