CN110811467A - Spray arm of cleaning machine - Google Patents
Spray arm of cleaning machine Download PDFInfo
- Publication number
- CN110811467A CN110811467A CN201810897655.1A CN201810897655A CN110811467A CN 110811467 A CN110811467 A CN 110811467A CN 201810897655 A CN201810897655 A CN 201810897655A CN 110811467 A CN110811467 A CN 110811467A
- Authority
- CN
- China
- Prior art keywords
- spray arm
- flow channel
- spray
- arm body
- cleaning machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
- A47L15/22—Rotary spraying devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4278—Nozzles
- A47L15/428—Rotary nozzles
Abstract
The invention relates to a spray arm of a cleaning machine, which comprises a spray arm body, wherein a water collecting cavity is formed in the middle of the spray arm body, two sides of the water collecting cavity are respectively connected with a main flow channel extending along the length direction of the spray arm body, a first spray hole communicated with the main flow channel is formed in the side wall of the spray arm body, an auxiliary flow channel extending from the main flow channel to the upper part of the water collecting cavity is formed in the side wall of the spray arm body, and a second spray hole communicated with the auxiliary flow channel is formed in the central part of the spray arm body. According to the invention, the auxiliary flow channel extending from the main flow channel to the upper part of the water collecting cavity is formed on the side wall of the spray arm body, and the second spray hole communicated with the auxiliary flow channel is formed in the central part of the spray arm body, so that the defect that the central area of the spray arm cannot discharge water is overcome on the premise that the first spray holes are covered on the rotating arms at two sides of the spray arm, and the water discharging range of the spray arm can cover all areas above the spray arm, thereby improving the cleaning effect.
Description
Technical Field
The invention relates to a spray arm of a cleaning machine.
Background
A dishwasher (washing machine) is a device that sprays cold or hot water to dishes to remove dirt adhered to the dishes and wash the dishes. Dishes are placed in a dish frame inside a dishwashing cabinet, and a general dishwasher includes a pump for spraying washing water and a spray arm.
The spray arm structure of the existing water tank type cleaning machine is shown in figure 1, a rotating arm of the spray arm is provided with spray holes, and a middle area of the spray arm is not provided with a spray head, which is mainly caused by the influence of the pressure requirement of the middle area of the spray arm. However, the structure causes a certain blind area in the middle area of the cleaning machine during the cleaning process, and even if the spray holes on the two sides of the spray arm have the effect of cross confluence above the spray arm, the tableware above the middle area of the spray arm is not cleaned cleanly due to insufficient force and water flow diffusion.
Therefore, further improvements are to be made to the current spray arm configuration.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a spray arm of a cleaning machine, which improves the cleaning effect by adding spray holes in the middle area.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a spray arm of cleaning machine, includes the spray arm body, and the middle part of this spray arm body is formed with the chamber that catchments, and this chamber both sides that catchment are connected with respectively along the sprue that spray arm body length direction extended, the junction of chamber and sprue constitutes the throat position of spray arm body, it has the first orifice that is linked together with the sprue to open on the lateral wall of spray arm body, its characterized in that: an auxiliary flow channel extending from the main flow channel to the upper part of the water collecting cavity is formed on the side wall of the spray arm body, and a second spray hole communicated with the auxiliary flow channel is formed in the central part of the spray arm body.
In the above scheme, the auxiliary flow channel is convexly arranged on the outer side wall of the spray arm body, and the inner wall of the main flow channel corresponding to the auxiliary flow channel keeps smooth. Make the internal wall face of sprue keep original smooth structure to avoid causing the influence to the water velocity of sprue, ensure that first orifice has sufficient injection dynamics.
Preferably, the liquid inlet of the auxiliary flow channel is positioned at the downstream of the corresponding throat part and at the upstream of the corresponding first spray hole according to the flow direction of the water flow. When the water flow in the main flow channel is sprayed out from the first spray hole, the water flow pressure can be correspondingly reduced, the liquid inlet of the auxiliary flow channel is arranged at the downstream of the corresponding throat part and the upstream of the corresponding first spray hole, the largest possible water pressure can be provided for the auxiliary flow channel on the premise of not influencing the water inlet pressure of the water collecting cavity, the spraying force of the water outlet of the second spray hole is improved, and the cleaning effect is further improved.
As an improvement, the auxiliary flow passage comprises a straight line section and an arc section which are sequentially connected along the water flow direction, the connection part of the straight line section and the arc section is in tangent connection, the arc section is arranged close to the central part of the top wall of the spray arm body, and the second spray hole is arranged on the arc section. The straight line section is adopted at the upstream of the auxiliary flow channel, water flow can be conveyed to the central part of the spray arm body on the premise of minimum water pressure loss, the downstream of the auxiliary flow channel is set to be the arc section, the second spray hole is formed in the arc section, the water flow can rush out of the second spray hole under the impact force of sudden water flow cutoff, the jet force of the water outlet of the second spray hole is improved, and the cleaning effect is further improved.
Preferably, a concave area is formed in the central portion of the top wall of the spray arm body, the end edge of the straight line section is arranged close to the outer edge of the concave area, and the arc-shaped section surrounds and is arranged close to the outer edge of the concave area. With such a structure, the water flow coverage is wider.
Further preferably, the second nozzle hole is opened at the end of the arc-shaped section, the end of the arc-shaped section is provided with an inner wall which is vertically arranged, and the axis of the second nozzle hole inclines from the inner wall to the upstream of the auxiliary flow channel. The included angle between the axial lead of the second spray hole and the inner wall is 10-40 degrees. The structure is favorable for flushing the water flow out of the second spray hole under the impact force of sudden water flow cutoff, and the jet force of the water flow out of the second spray hole is improved
Preferably, the two auxiliary flow channels are respectively connected to a main flow channel, and the second nozzle holes at the tail end of each auxiliary flow channel are symmetrically arranged on two sides of the recessed area and have opposite inclination directions. Such a configuration is advantageous in that the water flow can cover a wider range.
In order to improve the water outlet impact force, the inner diameter of the second spray hole is gradually reduced along the water flow direction.
In each scheme, a water inlet communicated with the water collecting cavity is formed in the bottom wall of the spraying arm body.
Compared with the prior art, the invention has the advantages that: according to the invention, the auxiliary flow channel extending from the main flow channel to the upper part of the water collecting cavity is formed on the side wall of the spray arm body, and the second spray hole communicated with the auxiliary flow channel is formed in the central part of the spray arm body, so that the defect that the central area of the spray arm cannot discharge water is overcome on the premise that the first spray holes are covered on the rotating arms at two sides of the spray arm, and the water discharging range of the spray arm can cover all areas above the spray arm, thereby improving the cleaning effect.
Drawings
FIG. 1 is a schematic structural diagram of the background art of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a portion of an embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 2;
fig. 5 is a schematic distribution structure diagram of an auxiliary flow channel in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 2 to 5, the spray arm of the cleaning machine of the present embodiment includes a spray arm body 1, and the spray arm body 1 extends from a central portion to two sides along a length direction to form two rotating arms 11 of the spray arm. The interior of the middle part of the spray arm body 1 is hollow to form a water collecting cavity 10, and the bottom wall of the spray arm body 1 is provided with a water inlet 101 communicated with the water collecting cavity 10. The two sides of the water collecting cavity 10 are respectively communicated with a main runner 12 which extends along the length direction of the spray arm body 1 and is formed on the rotating arms 11, the junction of the water collecting cavity 10 and the main runner 12 forms a throat part 13 of the spray arm body 1, the top walls of the two rotating arms 11 are respectively provided with a plurality of first spray holes 121 which are arranged at intervals, and each first spray hole 121 is respectively communicated with the corresponding main runner 12.
In this embodiment, an auxiliary flow channel 14 extending from the main flow channel 12 to the upper side of the water collecting cavity 10 is formed on the top wall of the spray arm body 1, and a second nozzle 141 communicating with the auxiliary flow channel 14 is opened at the central portion of the spray arm body 1. The auxiliary channel 14 is protruded on the outer side wall of the spray arm body 1, and the inner wall of the main channel 12 corresponding to the auxiliary channel 14 is kept smooth, so that the inner wall surface of the main channel 12 is kept in an original smooth structure, thereby avoiding the influence on the water flow speed of the main channel 12 and ensuring that the first nozzle hole 121 has enough spraying force. The liquid inlet 142 of the auxiliary flow passage 14 is located downstream of the corresponding throat portion 13 and upstream of the corresponding first nozzle hole 121 in terms of the flow direction of the water flow. When the water in the main flow channel 12 is sprayed out from the first nozzle hole 121, the water pressure is correspondingly reduced, and the liquid inlet 142 of the auxiliary flow channel 14 is disposed at the downstream of the corresponding throat 13 and the upstream of the corresponding first nozzle hole 121, so that the largest possible water pressure is provided for the auxiliary flow channel 14 on the premise of not influencing the water inlet pressure of the water collecting cavity 10, the spraying force of the water discharged from the second nozzle hole 141 is improved, and the cleaning effect is further improved.
The auxiliary flow channel 14 of the present embodiment includes a straight line section 143 and an arc section 144 sequentially connected along the water flow direction, the connection between the straight line section 143 and the arc section 144 is tangent connection, the arc section 144 is disposed near the central portion of the top wall of the spray arm body 1, and the second spray hole 141 is opened on the arc section 144. Specifically, a concave area 100 is formed in the central portion of the top wall of the spray arm body 1, the starting end of the straight line section 143 is located on the central line of the corresponding main runner 12, the end edge of the straight line section 143 is arranged close to the outer edge of the concave area 100, and the arc-shaped section 144 surrounds and is arranged close to the outer edge of the concave area 100. The second nozzle hole 141 opens at the end of the arc-shaped section 144, and the end of the arc-shaped section 144 has a vertically arranged inner wall 1441 from which the axis of the second nozzle hole 141 is inclined upstream of the auxiliary flow passage 14. The included angle a between the axis of the second nozzle hole 141 and the inner wall 1441 is 10-40 °. The straight line section 143 is adopted at the upstream of the auxiliary flow channel 14, water flow can be conveyed to the central part of the spray arm body 1 on the premise of minimum water pressure loss, the downstream of the auxiliary flow channel 14 is set to be the arc-shaped section 144, the second spray hole 141 is arranged at the tail end of the arc-shaped section 144, water flow can be flushed out of the second spray hole 141 under the impact force of sudden water flow cutoff, the spray force of water flowing out of the second spray hole 141 is improved, and the cleaning effect is further improved. The two auxiliary flow channels 14 of the present embodiment are connected to one main flow channel 12, and the second nozzle holes 141 at the end of each auxiliary flow channel 14 are symmetrically arranged at both sides of the recessed area 100 and have opposite inclination directions, which is beneficial to widening the water flow coverage.
In this embodiment, an auxiliary flow channel 14 extending from the main flow channel 12 to the upper side of the water collecting cavity 10 is formed on the side wall of the spray arm body 1, and a second spray hole 141 communicated with the auxiliary flow channel 14 is formed in the central portion of the spray arm body 1, so that on the premise that the rotary arms 11 on the two sides of the spray arm are covered with the first spray holes 121, the defect that water cannot be discharged from the central area of the spray arm is overcome, the water discharge range of the spray arm can cover all areas above the spray arm, and the cleaning effect is further improved.
Claims (10)
1. The utility model provides a spray arm of cleaning machine, includes spray arm body (1), and the middle part of this spray arm body (1) is formed with water collecting cavity (10), and this water collecting cavity (10) both sides are connected with sprue (12) that extend along spray arm body (1) length direction respectively, it has first orifice (121) that are linked together with sprue (12) to open on the lateral wall of spray arm body (1), its characterized in that: an auxiliary flow channel (14) extending from the main flow channel (12) to the upper part of the water collecting cavity (10) is formed on the side wall of the spray arm body (1), and a second spray hole (141) communicated with the auxiliary flow channel (14) is formed in the central part of the spray arm body (1).
2. The spray arm of a cleaning machine of claim 1, wherein: the auxiliary flow channel (14) is convexly arranged on the outer side wall of the spray arm body (1), and the inner wall of the main flow channel (12) corresponding to the auxiliary flow channel (14) keeps smooth.
3. The spray arm of a cleaning machine of claim 2, wherein: the connection part of the water collecting cavity (10) and the main flow channel (12) forms a throat part (13) of the spray arm body (1), and according to the flow direction of water flow, the liquid inlet (142) of the auxiliary flow channel (14) is positioned at the downstream of the corresponding throat part (13) and the upstream of the corresponding first spray hole (121).
4. The spray arm of a cleaning machine of claim 1, wherein: the auxiliary flow channel (14) comprises a straight line section (143) and an arc section (144) which are sequentially connected along the water flow direction, the connection position of the straight line section (143) and the arc section (144) is in tangent connection, the arc section (144) is arranged close to the central part of the top wall of the spray arm body (1), and the second spray hole (141) is arranged on the arc section (144).
5. The spray arm of a cleaning machine of claim 4, wherein: a concave area (100) is formed in the center of the top wall of the spray arm body (1), the edge of the tail end of the straight line section (143) is close to the outer edge of the concave area (100), and the arc section (144) surrounds and is close to the outer edge of the concave area (100).
6. The spray arm of a cleaning machine of claim 5, wherein: the second spray hole (141) is arranged at the tail end of the arc-shaped section (144), the tail end of the arc-shaped section (144) is provided with a vertically arranged inner wall (1441), and the axis of the second spray hole (141) inclines from the inner wall (1441) to the upstream of the auxiliary flow passage (144).
7. The spray arm of a cleaning machine of claim 6, wherein: the included angle (a) between the axis of the second spray hole (141) and the inner wall (1441) is 10-40 degrees.
8. The spray arm of a cleaning machine of claim 5, wherein: the two auxiliary flow channels (14) are respectively connected to a main flow channel (12), and the second spray holes (141) at the tail end of each auxiliary flow channel (14) are symmetrically arranged on two sides of the concave area (100) and have opposite inclination directions.
9. The spray arm of a cleaning machine according to any one of claims 1 to 8, characterized in that: the inner diameter of the second spray hole (141) is gradually reduced along the water flow direction.
10. The spray arm of a cleaning machine according to any one of claims 1 to 8, characterized in that: the bottom wall of the spray arm body (1) is provided with a water inlet (101) communicated with the water collecting cavity (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897655.1A CN110811467A (en) | 2018-08-08 | 2018-08-08 | Spray arm of cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897655.1A CN110811467A (en) | 2018-08-08 | 2018-08-08 | Spray arm of cleaning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110811467A true CN110811467A (en) | 2020-02-21 |
Family
ID=69541329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810897655.1A Pending CN110811467A (en) | 2018-08-08 | 2018-08-08 | Spray arm of cleaning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110811467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329425A (en) * | 2020-03-06 | 2020-06-26 | 宁波方太厨具有限公司 | A spray arm and cleaning machine for cleaning machine |
-
2018
- 2018-08-08 CN CN201810897655.1A patent/CN110811467A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329425A (en) * | 2020-03-06 | 2020-06-26 | 宁波方太厨具有限公司 | A spray arm and cleaning machine for cleaning machine |
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