Spraying arm for cleaning machine

Abstract

The invention relates to a spraying arm for a cleaning machine. The spraying arm comprises a body extending in the length direction, a water collecting cavity is formed in the middle of the body, a first flow channel communicated with the water collecting cavity is formed in one side of the body, and a second flow channel communicated with the water collecting cavity is formed in the other side of the body. The molded line corresponding to the water collecting cavity comprises a first line segment and a second line segment which are centrosymmetric, the first line segment comprises a first arc segment and a second arc segment which are connected with each other and have different radians, and the second line segment comprises a third arc segment and a fourth arc segment which are connected with each other and have different radians. In the flowing direction of water flow, the first line segment and the second line segment enable the water collecting cavity to form an involute volute structure, and the structure is beneficial for increasing the water pressure of output water flow, so that the water flow spraying lift is improved; each of the first line segment and the second line segment comprises three arc segments which are connected with one another and have different radians, the centrifugal effect of the volute is achieved through the arc structures as few as possible, energy loss is reduced, and the lift of jet water flow can be further improved.

Description

technical field [0001] The invention relates to the technical field of dishwasher accessories, in particular to a spray arm for a washing machine. Background technique [0002] A dishwasher is a device that sprays cold or hot water onto dishes to remove dirt adhering to them and to clean them. At present, the common dishwashers on the market include desktop, cabinet, sink, etc. Among them, only the sink type dishwasher uses an open water pump, that is, the water pump is combined with the spray arm, and the spray arm is used as the pump volute. At the same time, it takes into account the functions of drawing water and spraying water column, which is convenient for disassembly and cleaning, and maintains a good water flow effect. [0003] The applicant's previous application ZL201310752030.3 "Open Sink Cleaning Machine" discloses the above water pump structure, the rotating spray arm is used as the water outlet part of the water pump, and the middle bottom is formed with an u...

AI Technical Summary

Problems solved by technology

[0004] In actual use, it is found that the above-mentioned spray arm has a large capacity loss when pumping water, which affects the lift of the sprayed water column. When it is applied to a sink-type dishwasher with a small washing space, the lift of the above-mentioned spray arm It can meet the cleaning needs, but when the overall height of the washing chamber increases, the spray head of the above spray arm is difficult to meet the cleaning needs

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