CN210541428U

CN210541428U - Spray arm and cleaning machine with same

Info

Publication number: CN210541428U
Application number: CN201920024523.8U
Authority: CN
Inventors: 徐慧; 郑峰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2020-05-19
Anticipated expiration: 2029-01-07

Abstract

The utility model relates to a spray arm, including the spray arm body, be provided with first hole for water spraying on this spray arm body, still including can be under first hole for water spraying water state with gaseous suction and with the nozzle that rivers were mixed, be provided with the gas collection chamber that is linked together with the air supply on the lateral wall of spray arm body, the nozzle cover is put in first hole for water spraying and is opened on the lateral wall has the suction hole that supplies in the gas collection chamber gas to get into the nozzle. The utility model makes the air bubble in the water flow, when the air bubble is mixed with the water flow and the water flow is sprayed to the bowl and the dish, the air bubble in the water flow contacts with the bowl and the dish to be broken and generate larger impact force, thereby dispersing the stubborn dirt on the bowl and the dish or the vegetable and the fruit and achieving better cleaning effect; meanwhile, as the water flow speed is not constant along with the rotation of the spray arm, the gas quantity sucked into the nozzle is not constant, so that the water-gas mixture has a discontinuous spraying effect, the stripping force on dirt is further increased, and the cleaning effect is improved.

Description

Spray arm and cleaning machine with same

Technical Field

The utility model relates to a spray arm and applied cleaning machine that has this spray arm.

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.

The above-mentioned various types of dish washers generally achieve a washing action by a water pump lifting up water and spraying it toward dishes in a washing space. For example, chinese patent application No. CN97236119.7, microcomputer light-operated full-automatic dishwasher, and chinese patent application No. CN00240098.7, a dishwasher disclose similar structures, in which the impact force of water flow sprayed to the dishes is weak and not uniform enough, and when there are many dishes, the water flow cannot cover the dishes, resulting in poor cleaning effect. Chinese patent CN200710306898.5, dish washing machine, especially household dish washing machine, with a device for improving decontamination effect, provides a vaporization device for generating a fluid mist that can be introduced into the chamber of the dish washing machine to enlarge the washing area of the dish and improve the uniformity of the washing medium, but this type of structure still cannot solve the problem of weak impact force of the ejected water flow. Chinese patent No. 201610795828.X "a large-scale ultrasonic automatic dish washer" has set up ultrasonic wave emission head device to input highly-compressed air in the washing liquid simultaneously, utilize ultrasonic wave emission head device to make the highly-compressed air of input form the bubble in the washing liquid, ultrasonic transducer is used for providing the energy for the washing liquid, make the bubble in the washing liquid break and produce the impact force, thereby improve the water impact force. However, in this kind of structure, the instantaneous empty explosion phenomenon that produces between ultrasonic wave and the high pressure bubble need can only be maintained in aqueous, when rivers were promoted by the water pump and circulated blowout, the high pressure bubble was difficult to reach the bowl dish surface and takes place to break promptly, can't be applicable to among the water jet type dish washer structure. In addition, the structure is only suitable for large dish washing machines, and is difficult to be applied to household dish washing machines.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide one kind and can form the bubble and then increase the cleaning machine's that improves the cleaning performance to the impact strength who is washd the thing in rivers spray arm.

The utility model discloses another technical problem that will solve is to prior art's current situation, provides an use the cleaning machine that has above-mentioned spray arm, and this cleaning machine can form the bubble in rivers, and then has increased thereby to having improved the cleaning performance by the impact strength who washs the thing.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a spray arm, includes the spray arm body, is provided with first hole for water spraying on this spray arm body, its characterized in that: the spraying arm is characterized by further comprising a nozzle capable of sucking gas and mixing with water flow in a first water spraying hole water spraying state, a gas collecting cavity communicated with a gas source is arranged on the side wall of the spraying arm body, the nozzle is sleeved in the first water spraying hole, and a gas suction hole for allowing gas in the gas collecting cavity to enter the nozzle is formed in the side wall of the spraying arm body.

In the above scheme, the first water spray hole includes a first portion located on the side wall of the spray arm body and a second portion located on the outer side wall of the gas collecting cavity, the first portion and the second portion are arranged oppositely, a gap communicated with the gas collecting cavity is formed between the first portion and the second portion, the nozzle is provided with a first insertion part capable of being inserted into the first portion and a second insertion part capable of being inserted into the second portion, the air suction hole is formed between the first insertion part and the second insertion part, and an inlet of the air suction hole is arranged corresponding to the gap. The structure is adopted, so that the air suction holes on the nozzles are connected with the air collection cavity.

Preferably, the inner diameter of the second part is larger than that of the first part, and a step arranged along the circumferential direction is formed at the junction of the first part and the second part.

Preferably, the suction holes are arranged in an axial direction of the nozzle with the outlet on an end surface of the step, and an outer peripheral wall of the nozzle is recessed radially inward to form an inlet of the suction holes. By adopting the structure, the gas in the gas collection cavity can be prevented from being sucked into the nozzle under the action of negative pressure generated by the water flow.

As an improvement, a guide sleeve is arranged in the second part of the first water spraying hole, the lower end of the guide sleeve is abutted against the end face of the step, and a cambered surface which is gradually and smoothly transited upwards is formed on the lower end face of the guide sleeve from outside to inside along the radial direction. The upper edge of the cambered surface is tangent to the inner wall surface of the guide sleeve at the joint. The inner diameter of the second part can be reduced to a certain extent by arranging the guide sleeve, the water flow speed is improved, and the lower end of the guide sleeve is smoothly transited so as to be convenient for introducing air flow, thereby being better mixed with water flow.

In each of the above aspects, the nozzle is removably inserted into the first spout hole. The structure is convenient to produce and assemble.

In order to facilitate connection, the inner wall of the second part of the first water spraying hole is provided with a concave ring arranged along the circumferential direction, and correspondingly, a convex ring which can be matched and clamped with the concave ring is formed on the outer circumferential wall of the nozzle.

Preferably, a first groove arranged along the circumferential direction is formed in the outer circumferential wall of the upper portion of the nozzle, and a first sealing ring capable of abutting against the inner wall of the second portion of the first water spraying hole is arranged in the first groove. And a second groove arranged along the circumferential direction is formed in the peripheral wall of the lower part of the nozzle, and a second sealing ring capable of abutting against the inner wall of the first part of the first water spraying hole is arranged in the second groove. The structure can prevent water flow from entering the gas collecting cavity.

In each scheme, the spraying arm is further provided with a second water spraying hole positioned on the periphery of the gas collecting cavity. The second water spray hole is not communicated with the gas collecting cavity, is an existing common water spray hole, and can be matched with the first water spray hole to improve the cleaning effect.

The utility model provides an use cleaning machine that has above-mentioned spray arm, includes the box, spray arm and be used for driving the rotatory actuating mechanism of spray arm, the box has the washing chamber, spray arm can locate in this box with rotating, thereby spray arm inside cavity forms the chamber that catchments, it has the water inlet that is linked together with this chamber that catchments to open on the spray arm lateral wall, actuating mechanism includes motor and impeller, impeller upper portion can locate in the chamber that catchments with rotating, the impeller lower part passes the water inlet and is located outside spray arm, the motor is located outside the box and the motor shaft passes the box and is connected with the impeller, its characterized in that: the motor shaft is hollow, the first end of the motor shaft is an air inlet end arranged outside the box body, and the second end of the motor shaft is an air outlet end communicated with the air collection cavity.

The cleaning machine further comprises an air filling structure capable of providing an air source for the air collecting cavity, the air filling structure comprises an air pump and an air guide pipe, the air pump is arranged on the outer side of the box body, the air inlet end of the air guide pipe is connected with the air pump, and the air outlet end of the air guide pipe is connected with the air inlet end of the motor shaft.

Compared with the prior art, the utility model has the advantages of: the utility model arranges the gas collecting cavity on the side wall of the spray arm body and arranges the nozzle which can suck the gas in the gas collecting cavity and mix with the water flow under the water spraying state on the first water spraying hole, so that the sprayed water flow carries bubbles, when the bubbles are mixed and the water flow is sprayed to bowls and dishes, the bubbles in the water flow contact with the bowls and dishes to break and generate larger impact force, thereby dispersing stubborn dirt on the bowls and dishes or vegetables and fruits and achieving better cleaning effect; meanwhile, as the water flow speed is not constant along with the rotation of the spray arm, the gas quantity sucked into the nozzle is not constant, so that the water-gas mixture has a discontinuous spraying effect, the stripping force on dirt is further increased, and the cleaning effect is improved.

Drawings

Fig. 1 is a schematic view of an installation structure of a cleaning machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

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

fig. 5 is a schematic view of an assembly structure of the spray nozzle and the spray arm body according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, the spray arm of the present embodiment includes a spray arm body 1 and a nozzle 2, the spray arm body 1 is hollow to form a water storage cavity 11, a first water spraying hole 12 and a second water spraying hole 13 communicated with the water storage cavity 11 are formed on an upper wall surface of the spray arm body 1, and a water inlet 14 communicated with the water storage cavity 11 is formed on a lower wall surface of the spray arm body 1. The side wall of the spray arm body 1 is provided with a gas collecting cavity 15 communicated with a gas source, the nozzle 2 is sleeved in the first water spraying hole 12, and the side wall of the nozzle 2 is provided with a gas suction hole 21 for allowing gas in the gas collecting cavity 15 to enter the nozzle 2, so that the gas is sucked and mixed with water flow due to negative pressure in the water spraying state of the first water spraying hole 12, and bubbles are carried in the sprayed water flow. The second water spray holes 13 are located on the periphery of the gas collecting cavity 15, the second water spray holes 13 are not communicated with the gas collecting cavity 15, and the second water spray holes are existing common water spray holes and can be matched with the first water spray holes 12 to improve the cleaning effect.

The first water spray hole 12 of the present embodiment includes a first portion 121 located on the side wall of the spray arm body 1 and a second portion 122 located on the outer side wall of the gas collecting chamber 15, the first portion 121 and the second portion 122 are arranged oppositely and coaxially, a gap 123 communicating with the gas collecting chamber 15 is formed between the first portion 121 and the second portion 122, the nozzle 2 has a first plug-in part 22 capable of being inserted into the first portion 121 and a second plug-in part 23 capable of being inserted into the second portion 122, the air suction hole 21 is opened between the first plug-in part 22 and the second plug-in part 23, and the inlet 211 is arranged corresponding to the gap 123, so that the air suction hole 21 on the nozzle 2 is connected with the gas collecting chamber 15. The inner diameter of the second portion 122 is larger than that of the first portion 121, and a step 124 arranged along the circumferential direction is formed at the junction of the first portion 121 and the second portion 122. The suction holes 21 are arranged in the axial direction of the nozzle 2 with the outlet 212 on the end surface of the above-mentioned step 124, and the outer peripheral wall of the nozzle 2 is recessed radially inward to form the inlet 211 of the suction hole 21. The suction holes 21 are plural and arranged at intervals in the circumferential direction of the nozzle 2. The structure can prevent water flow from entering the gas collecting cavity 15, so that gas in the gas collecting cavity 15 is sucked into the nozzle 2 under the action of negative pressure generated by the water flow.

In the second portion 122 of the first water jet hole 12 of the present embodiment, a guiding sleeve 125 is disposed, a lower end of the guiding sleeve 125 abuts against an end surface of the step 124, and a cambered surface 1251 with a gradual upward smooth transition is formed on the lower end surface of the guiding sleeve 125 from outside to inside in the radial direction. The upper edge of the arc surface 1251 is tangent to the inner wall surface of the guide sleeve 125 at the junction. The provision of the guide sleeve 125 reduces the inner diameter of the second portion 122 to some extent, increasing the velocity of the water flow, and providing a smooth transition at the lower end of the guide sleeve 125 facilitates the introduction of the air flow for better mixing with the water flow.

The nozzle 2 of this embodiment is removably inserted into the first spout hole 12 for ease of manufacture and assembly. For the convenience of connection, the inner wall of the second portion 122 of the first water jet hole 12 has a circumferentially arranged concave ring 1221, and correspondingly, the outer peripheral wall of the nozzle 2 is formed with a convex ring 24 capable of being engaged with the concave ring 1221. The outer peripheral wall of the upper part of the nozzle 2 is provided with a first groove 25 arranged along the circumferential direction, and a first sealing ring 26 capable of abutting against the inner wall of the second part 122 of the first water jet hole 12 is arranged in the first groove 25. The outer peripheral wall of the lower part of the nozzle 2 is provided with a second groove 27 arranged along the circumferential direction, and a second sealing ring 28 capable of abutting against the inner wall of the first part 121 of the first water spraying hole 12 is arranged in the second groove 27, so that the structure can prevent water flow from entering the gas collecting cavity 15.

The cleaning machine with the spray arm comprises a box body 3, a spray arm body 1 and a driving mechanism 4 for driving the spray arm body 1 to rotate, wherein the box body 3 is provided with a washing cavity and is installed on a cabinet table 100, the spray arm body 1 can be rotatably arranged in the box body 3, the spray arm body 1 is hollow inside to form a water collecting cavity 10, a water inlet 14 communicated with the water collecting cavity 10 is formed in the side wall of the spray arm body 1, the driving mechanism 4 comprises a motor 41 and an impeller 42, the upper part of the impeller 42 can be rotatably arranged in the water collecting cavity 10, the lower part of the impeller 42 penetrates through the water inlet 16 and is positioned outside the spray arm body 1, the motor 41 is arranged outside the box body 1, and a motor shaft 411 penetrates through the box body 1 and is connected with the. The motor shaft 411 is hollow, the first end of the motor shaft 411 is an air inlet end arranged outside the box body 1, and the second end of the motor shaft 411 is an air outlet end communicated with the air collecting cavity 15. The cleaning machine further comprises an air-entrapping structure 5 capable of providing an air source for the air-collecting cavity 15, the air-entrapping structure 5 comprises an air pump 51 and an air guide pipe 52, the air pump 51 is arranged on the outer side of the box body 1, the air inlet end of the air guide pipe 52 is connected with the air pump 51, and the air outlet end of the air guide pipe 52 is connected with the air inlet end of the motor shaft 411.

In the embodiment, the gas collecting cavity 15 is arranged on the side wall of the spray arm body 1, the nozzle 2 which can suck the gas in the gas collecting cavity 15 and mix with water flow in a water spraying state is arranged on the first water spraying hole 12, when the water flow passes through the nozzle 2, negative pressure can be generated at the upper part of the nozzle, so that the gas is sucked into the nozzle 2 from the gas collecting cavity 15 through the air suction hole 21, bubbles are carried in the sprayed water flow, and when the bubbles are mixed with the water flow and sprayed to dishes, the bubbles in the water flow are contacted with the dishes to be broken and generate larger impact force, so that stubborn dirt on the dishes or vegetables and fruits is dispersed, and a better cleaning effect is achieved; meanwhile, as the water flow speed is not constant along with the rotation of the spray arm, the gas quantity sucked into the nozzle 2 is not constant, so that the water-gas mixture has a discontinuous spraying effect, the stripping force on dirt is further increased, and the cleaning effect is improved; in addition, because the air source of the embodiment is supplied by the air collecting cavity 15, when the whole spray arm body 1 is immersed by water, air can be sucked into the nozzle 2, so that the turbulence of water flow is enhanced, and the cleaning effect is improved.

Claims

1. The utility model provides a spray arm, includes spray arm body (1), is provided with first hole for water spraying (12) on this spray arm body (1), its characterized in that: the spraying arm is characterized by further comprising a nozzle (2) capable of sucking gas and mixing the gas with water flow in a water spraying state of the first water spraying hole (12), a gas collecting cavity (15) communicated with a gas source is arranged on the side wall of the spraying arm body (1), the nozzle (2) is sleeved in the first water spraying hole (12) and is provided with a gas suction hole (21) on the side wall for the gas in the gas collecting cavity (15) to enter the nozzle (2).

2. The spray arm of claim 1, wherein: the first water spray hole (12) comprises a first portion (121) located on the side wall of the spray arm body (1) and a second portion (122) located on the outer side wall of the gas collecting cavity (15), the first portion (121) and the second portion (122) are arranged oppositely, a gap (123) communicated with the gas collecting cavity (15) is formed between the first portion (121) and the second portion (122), the nozzle (2) is provided with a first plug-in part (22) capable of being plugged into the first portion (121) and a second plug-in part (23) capable of being plugged into the second portion (122), the air suction hole (21) is formed between the first plug-in part (22) and the second plug-in part (23), and the inlet (211) is arranged corresponding to the gap (123).

3. The spray arm of claim 2, wherein: the inner diameter of the second part (122) is larger than that of the first part (121), and a step (124) arranged along the circumferential direction is formed at the joint of the first part (121) and the second part (122).

4. The spray arm of claim 3, wherein: the suction holes (21) are arranged along the axial direction of the nozzle (2), the outlet (212) is positioned on the end surface of the step (124), and the outer peripheral wall of the nozzle (2) is inwards sunken along the radial direction to form an inlet (211) of the suction hole (21).

5. The spray arm of claim 3, wherein: a guide sleeve (125) is arranged in the second part (122) of the first water spraying hole (12), the lower end of the guide sleeve (125) is abutted against the end surface of the step (124), and a cambered surface (1251) which is gradually and smoothly transited upwards is formed on the lower end surface of the guide sleeve (125) from outside to inside along the radial direction.

6. The spray arm of claim 5, wherein: the upper edge of the cambered surface (1251) is tangent to the inner wall surface of the guide sleeve (125) at the joint.

7. The spray arm of claim 2, wherein: the nozzle (2) is detachably inserted into the first water jet hole (12).

8. The spray arm of claim 7, wherein: the inner wall of the second part (122) of the first water spraying hole (12) is provided with a concave ring (1221) arranged along the circumferential direction, correspondingly, the outer circumferential wall of the nozzle (2) is provided with a convex ring (24) which can be matched and clamped with the concave ring (1221).

9. The spray arm of claim 8, wherein: the outer peripheral wall of the upper part of the nozzle (2) is provided with a first groove (25) which is arranged along the circumferential direction, and a first sealing ring (26) which can be abutted against the inner wall of the second part (122) of the first water spraying hole (12) is arranged in the first groove (25).

10. The spray arm of claim 8, wherein: and a second groove (27) arranged along the circumferential direction is formed in the outer circumferential wall of the lower part of the nozzle (2), and a second sealing ring (28) capable of abutting against the inner wall of the first part (121) of the first water spraying hole (12) is arranged in the second groove (27).

11. The spray arm of claim 2, wherein: and a second water spraying hole (13) positioned on the periphery of the gas collection cavity (15) is also formed in the spray arm body (1).

12. A cleaning machine applying the spray arm of any one of claims 1 to 11, comprising a box body (3), the spray arm and a driving mechanism (4) for driving the spray arm to rotate, the box body (3) is provided with a washing cavity, the spray arm can be rotatably arranged in the box body (3), the spray arm is hollow so as to form a water collecting cavity (10), a water inlet (16) communicated with the water collecting cavity (10) is arranged on the side wall of the spray arm, the driving mechanism (4) comprises a motor (41) and an impeller (42), the upper part of the impeller (42) can be rotatably arranged in the water collecting cavity (10), impeller (42) lower part is passed water inlet (16) and is located outside the spray arm, motor (41) are located outside box (3) and motor shaft (411) pass box (3) and are connected with impeller (42), its characterized in that: the motor shaft (411) is hollow, the first end of the motor shaft (411) is an air inlet end arranged outside the box body (3), and the second end of the motor shaft (411) is an air outlet end communicated with the air collection cavity (15).

13. The spray arm of claim 12, wherein: still including air entrainment structure (5) that can provide the air supply for gas collecting chamber (15), air entrainment structure (5) including air pump (51) and air duct (52), the box (3) outside is located in air pump (51), the inlet end of air duct (52) is connected with air pump (51), the outlet end of air duct (52) is connected with the inlet end of motor shaft (411).