Gushing arm and household appliance

Abstract

The utility model relates to the technical field of electric appliances, in particular to a spraying arm and a household electrical appliance, in the spraying arm, a spraying main body is provided with a spraying cavity and a plurality of spraying flow channels communicated with the peripheral side of the spraying cavity, and the spraying main body is provided with a plurality of cleaning holes communicated with the spraying flow channels; the liquid inlet guide pipe is connected to the spraying main body and is communicated with the spraying cavity; a spiral runner is arranged in the liquid inlet guide pipe; and / or the spraying flow channel comprises a first section and a linear second section, the first section is communicated with the second section, and the inlet direction of the first section is different from the outlet direction in the flowing path direction of the liquid. According to the arrangement, the impact strength of liquid is improved, and the cleaning effect on tableware is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a spray arm and a household appliance. Background Art

[0002] The spray arm is a component inside the dishwasher. The washing pump sends water into the spray arm, and water is ejected from the small holes on the spray arm to form a jet that impacts the surface of the tableware to achieve the purpose of cleaning the tableware.

[0003] The existing spray arm generally has a driving hole with a lateral inclination angle at the end of the spray arm. The spray arm is driven to rotate by the reaction force of the water flow ejected from the driving hole, which causes the impact force on the tableware to be washed to decrease, thereby resulting in poor cleaning effect of the tableware to be washed at the end of the spray arm. Utility Model Content

[0004] The utility model aims to provide a spray arm and a household appliance to solve the problem in the prior art that the impact force of the jet water in the driving hole decreases, resulting in poor cleaning effect of the tableware to be washed at the end of the spray arm.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In one aspect, the utility model provides a spray arm, the spray arm comprising:

[0007] A spray body, wherein the spray body has a spray cavity and a plurality of spray channels connected to the periphery of the spray cavity, and the spray body has a plurality of cleaning holes connected to the spray channels;

[0008] A liquid inlet conduit, the liquid inlet conduit is connected to the spray body and communicates with the spray chamber;

[0009] The liquid inlet conduit has a spiral flow channel; and / or

[0010] The spray flow channel includes a first section and a linear second section, the first section is connected to the second section, and along the flow path direction of the liquid, the inlet direction and the outlet direction of the first section are different.

[0011] In some embodiments, the first segment is in a zigzag or arc shape, and the direction in which the liquid flows out of the first segment is consistent with the extension direction of the second segment.

[0012] In some embodiments, the angle between the inlet direction and the outlet direction of the first section is α, and 90°<α<180°.

[0013] In some embodiments, the liquid inlet conduit has a plurality of spiral blades inside, the outer side of each spiral blade is connected to the inner wall of the liquid inlet conduit, and the inner side of each spiral blade intersects at the axis of the liquid inlet conduit, and each spiral blade divides the liquid inlet conduit into a plurality of spiral flow channels.

[0014] In some embodiments, each of the spiral sheets extends to the top of the spray chamber and abuts against the spray body, and each of the spiral flow channels is directly connected to the corresponding spray flow channel.

[0015] In some embodiments, the liquid inlet conduit has a plurality of spiral ribs inside, and each of the spiral ribs extends in a circumferential spiral around the axis of the liquid inlet conduit.

[0016] In some embodiments, the spray body includes a bottom shell and a cover body, the cover body is disposed on the bottom shell, and the spray cavity and the spray flow channel are surrounded by the cover body and the bottom shell.

[0017] On the other hand, the utility model provides a household appliance, comprising an appliance body and a spray arm in any of the above-mentioned schemes, wherein the appliance body has a washing chamber inside, a liquid outlet pipe is arranged in the washing chamber, the liquid inlet conduit and the liquid outlet pipe are relatively rotatably connected, and the liquid outlet pipe is connected to the liquid inlet conduit.

[0018] In some embodiments, the spray body extends downward from the periphery of the liquid inlet conduit and forms a plurality of clamping arms, and the clamping arm extends from one end of the spray body toward the center line of the liquid outlet pipe and is provided with a clamping protrusion, and the clamping arm is at least partially made of elastic material, and the outer side wall of the liquid outlet pipe is provided with an annular protrusion protruding outward, and each of the clamping protrusions is clamped under the annular protrusion.

[0019] In some embodiments, a butt joint is embedded in the liquid outlet pipe, the inner diameter of the butt joint is D1, the inner diameter of the liquid inlet conduit gradually decreases from top to bottom, and the minimum diameter of the liquid inlet conduit is D2, D1<D2.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a spray arm and a household appliance, comprising a spray body and a liquid inlet duct, wherein the spray body has a spray chamber and a spray flow channel connected to the periphery of the spray chamber, the spray flow channel is divided into a first section and a second section, a spiral flow channel is arranged in the liquid inlet duct and / or the flow channel direction of the first section is changed, so that the direction in which liquid enters the first section is different from the direction in which liquid flows out of the first section, thereby generating a circumferential force for driving the spray arm to rotate when the liquid passes through the spiral flow channel, or generating a circumferential force for driving the spray arm to rotate when the liquid passes through the first section, and a cleaning hole is arranged on the spray body without providing a driving force, so that the liquid flowing out of each cleaning hole is only used for washing tableware, and the impact distance is shorter than the distance of the liquid flowing out of the inclined driving hole, thereby increasing the impact force of the liquid and improving the cleaning effect on the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the spray arm in the first embodiment of the utility model from a first viewing angle;

[0023] Figure 2 It is a structural schematic diagram of the spray arm from a second viewing angle in the first embodiment of the utility model;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the spray arm and the liquid outlet pipe in the first embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the spray body in the first embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the flow angle of the first section of the spray body in the first embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the spiral sheet in the second embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of the structure of the spiral rib in the third embodiment of the utility model.

[0029] In the figure:

[0030] 100, spray body; 110, spray chamber; 120, spray channel; 121, first section; 122, second section; 123, cleaning hole; 1001, bottom shell; 1102, cover body; 130, clamping arm; 131, clamping protrusion;

[0031] 200, liquid inlet conduit; 210, spiral sheet; 220, spiral rib;

[0032] 300, liquid outlet pipe; 310, annular protrusion; 320, butt joint pipe. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] like Figures 1 to 7As shown, this embodiment provides a spray arm, which includes a spray body 100 and a liquid inlet conduit 200, wherein the spray body 100 has a spray chamber 110 and a plurality of spray channels 120 connected to the periphery of the spray chamber 110, the spray channel 120 includes a first section 121 and a linear second section 122, the first section 121 is connected to the second section 122, the spray body 100 has a plurality of cleaning holes 123 connected to the spray channel 120, and the axis of each cleaning hole 123 is perpendicular to the liquid flow path in the spray channel 120; the spray body 100 has a connecting hole connected to the spray chamber 110, the liquid inlet conduit 200 is connected to the spray body 100, and is connected to the spray chamber 110 through the connecting hole; the liquid flows through the liquid inlet conduit 200 and the spray channel 120 to generate a circumferential force that drives the spray arm to rotate. Specifically, in some embodiments, the liquid inlet conduit 200 has a spiral channel. In some embodiments, along the liquid flow path, the inlet direction of the first section 121 is different from the outlet direction. In some embodiments, the liquid inlet conduit 200 has a spiral flow channel, and along the liquid flow path, the inlet direction of the first section 121 is different from the outlet direction.

[0038] The above-mentioned arrangement enables the liquid to generate a circumferential force F that drives the spray arm to rotate when passing through the spiral flow channel, or the liquid to generate a circumferential force that drives the spray arm to rotate when passing through the first section 121. The cleaning holes 123 are set on the spray body 100, and there is no need to provide a driving force. Therefore, the liquid flowing out of each cleaning hole 123 is only used to rinse tableware, and the impact distance is shorter than that of the liquid flowing out from the inclined driving hole, thereby increasing the impact force of the liquid and improving the cleaning effect on the tableware.

[0039] Taking the driving force generated by the liquid in the first section 121 as an example, the liquid will impact the side wall surface of the first section 121 after passing through the first section 121, and the flow direction will change, so that the force on the first section 121 is uneven, thereby driving the spray arm to rotate, and gradually accelerate to a preset speed, and maintain a stable motion state. Preferably, the preset speed can be 18r / min-22r / min.

[0040] In some embodiments, the first section 121 is in a zigzag or arc shape, and the direction in which the liquid flows out of the first section 121 is consistent with the extension direction of the second section 122. With the arrangement of the above structure, the liquid will not encounter resistance when flowing from the first section 121 to the second section 122, thereby increasing the impact force of the liquid after flowing out of the cleaning hole 123.

[0041] The angle between the inlet direction and the outlet direction of the first section 121 is α, and 90°<α<180°. With the above arrangement, the flow direction of the liquid changes after entering the first section 121, so that the force on the first section 121 is uneven, thereby generating a circumferential force to drive the spray arm to rotate and avoiding a large liquid turn to cause hydraulic loss. In some embodiments, α can be selected as 110°.

[0042] Regarding the number of the spray flow channels 120, in this embodiment, three may be provided. In other embodiments, the number of the spray flow channels 120 may be two or four, and the specific number is not limited thereto.

[0043] In some embodiments, the liquid inlet conduit 200 has a plurality of spiral blades 210 inside, the outer side of each spiral blade 210 is connected to the inner side wall of the liquid inlet conduit 200, and the inner side of each spiral blade 210 intersects at the axis of the liquid inlet conduit 200, and each spiral blade 210 divides the liquid inlet conduit 200 into a plurality of spiral flow channels. The above arrangement allows the liquid to impact the spiral blades 210 during the flow process, thereby causing a change in flow direction during the upward flow process, and generating a circumferential force that drives the liquid inlet conduit 200 to rotate, thereby driving the spray body 100 to rotate through the liquid inlet conduit 200, thereby realizing the rotation of the entire spray arm. The arrangement in which the inner side of the spiral blade 210 intersects at the axis of the liquid inlet conduit 200 allows the spiral blade 210 to occupy as little internal space of the liquid inlet conduit 200 as possible.

[0044] There are three spiral blades 210, and the three spiral blades 210 divide the liquid inlet conduit 200 into three spiral flow channels. In other embodiments, the number of the spiral blades 210 can also be one or four.

[0045] In some embodiments, each spiral sheet 210 extends to the top of the spray chamber 110 and abuts against the spray body 100, and each spiral flow channel is directly connected to the corresponding spray flow channel 120. With the arrangement of the above structure, convection of multiple streams of liquid after entering the spray chamber 110 is avoided, thereby reducing local hydraulic losses.

[0046] In order to realize the liquid in the liquid inlet conduit 200 to rise in a spiral, in some embodiments, a plurality of spiral ribs 220 are provided inside the liquid inlet conduit 200, and each spiral rib 220 extends in a circumferential spiral around the axis of the liquid inlet conduit 200. With the arrangement of the above structure, the liquid impacts the spiral rib 220 during the flow process in the liquid inlet conduit 200, generating a component force in the circumferential direction, i.e., a circumferential force, thereby driving the liquid inlet conduit 200 to rotate.

[0047] In addition, the provision of the spiral rib 220 also helps to improve the strength of the liquid inlet conduit 200. The spiral rib 220 has a simple structure, is easy to process, and is conducive to reducing costs.

[0048] In some embodiments, the number of the spiral ribs 220 may be two or three, and the spiral ribs 220 are evenly distributed around the liquid inlet conduit 200 so that the liquid inlet conduit 200 is evenly stressed, thereby ensuring the stability of the spray arm rotation.

[0049] The spray body 100 includes a bottom shell 1001 and a cover 1102. The cover 1102 is sealed and disposed on the bottom shell 1001, and a spray chamber 110 and a spray channel 120 are formed between the cover 1102 and the bottom shell 1001. Specifically, the bottom shell 1001 and the cover 1102 are screwed or bonded.

[0050] The communication hole is provided at the bottom of the bottom shell 1001, and the liquid inlet conduit 200 is connected to the bottom shell 1001 and communicates with the communication hole. In some embodiments, the liquid inlet conduit 200 and the bottom shell 1001 are integrally formed.

[0051] This embodiment also provides a household appliance, which includes an appliance body and the spray arm in the above embodiment. The appliance body has a washing chamber inside, and a liquid outlet pipe 300 is arranged in the washing chamber. The liquid inlet conduit 200 is connected to the liquid outlet pipe 300 so as to be relatively rotatable, and the liquid outlet pipe 300 is connected to the liquid inlet conduit 200.

[0052] In the present embodiment, the household appliance can be a dishwasher. In other embodiments, the household appliance can be other cleaning equipment, but is not limited thereto.

[0053] The spray body 100 extends downward from the outer periphery of the liquid inlet conduit 200 and forms a plurality of clamping arms 130. The clamping arm 130 is provided with a clamping protrusion 131 extending toward the center line direction of the liquid outlet pipe 300 from one end away from the spray body 100. The clamping arm 130 is at least partially made of elastic material. The outer side wall of the liquid outlet pipe 300 is provided with an annular protrusion 310 protruding outward. Each clamping protrusion 131 is clamped under the annular protrusion 310. The above arrangement enables the liquid inlet conduit 200 and the liquid outlet pipe 300 to rotate relative to each other, and the spray arm will not be separated from the liquid outlet pipe 300 when working. The clamping arm 130 is made of a plastic material that can undergo elastic deformation.

[0054] There are two clamping arms 130, which are symmetrically arranged about the axis of the liquid inlet conduit 200. In other embodiments, there may be three clamping arms 130 to improve the connection stability between the liquid inlet conduit 200 and the liquid outlet pipe 300.

[0055] A butt joint pipe 320 is embedded inside the liquid outlet pipe 300, and the inner diameter of the butt joint pipe 320 is D1. The inner diameter of the liquid inlet conduit 200 gradually decreases from top to bottom, and the minimum diameter of the liquid inlet conduit 200 is D2, and D1<D2. Specifically, the lower end of the butt joint pipe 320 is turned outward and connected to the inner wall of the liquid outlet pipe 300, and the upper end of the butt joint pipe 320 is located at the lower side of the liquid inlet conduit 200, and the inner diameter of the upper end of the butt joint pipe 320 is D1. The above-mentioned size setting makes the outer diameter of the liquid smaller after flowing out of the butt joint pipe 320, and can smoothly enter the liquid inlet conduit 200 with a larger inner diameter, thereby improving the fluidity of the liquid flow channel.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A spray arm, characterized in that: include: A spray body (100), the spray body (100) comprising a spray chamber (110) and a plurality of spray channels (120) connected to the periphery of the spray chamber (110), the spray body (100) comprising a plurality of cleaning holes (123) connected to the spray channels (120); A liquid inlet conduit (200), the liquid inlet conduit (200) being connected to the spray body (100) and communicating with the spray chamber (110); The liquid inlet conduit (200) has a spiral flow channel therein; and / or The spray flow channel (120) comprises a first section (121) and a linear second section (122); the first section (121) is connected to the second section (122); along the flow path of the liquid, the inlet direction and the outlet direction of the first section (121) are different.

2. The spray arm according to claim 1, characterized in that: The first section (121) is in a zigzag or arc shape, and the direction in which the liquid flows out of the first section (121) is consistent with the extension direction of the second section (122).

3. The spray arm according to claim 2, characterized in that: The angle between the inlet direction and the outlet direction of the first section (121) is α, and 90°<α<180°.

4. The spray arm according to claim 1, characterized in that: The liquid inlet conduit (200) has a plurality of spiral blades (210) inside, the outer side of each spiral blade (210) is connected to the inner side wall of the liquid inlet conduit (200), and the inner side of each spiral blade (210) intersects at the axis of the liquid inlet conduit (200), and each spiral blade (210) divides the liquid inlet conduit (200) into a plurality of spiral flow channels.

5. The spray arm according to claim 4, characterized in that: Each of the spiral sheets (210) extends to the top of the spray chamber (110) and abuts against the spray body (100), and each of the spiral flow channels is directly connected to the corresponding spray flow channel (120).

6. The spray arm according to claim 1, characterized in that: The liquid inlet conduit (200) has a plurality of spiral ribs (220) inside, and each of the spiral ribs (220) extends in a circumferential spiral around the axis of the liquid inlet conduit (200).

7. The spray arm according to any one of claims 1 to 6, characterized in that: The spray body (100) comprises a bottom shell (1001) and a cover body (1102); the cover body (1102) is arranged on the bottom shell (1001), and the spray chamber (110) and the spray flow channel (120) are enclosed between the cover body (1102) and the bottom shell (1001).

8. A household appliance, characterized in that: The invention comprises an electrical appliance body and a spray arm as claimed in any one of claims 1 to 7, wherein the electrical appliance body has a washing chamber inside, a liquid outlet pipe (300) is arranged in the washing chamber, the liquid inlet conduit (200) is connected to the liquid outlet pipe (300) so as to be relatively rotatable, and the liquid outlet pipe (300) is communicated with the liquid inlet conduit (200).

9. The household appliance according to claim 8, characterized in that: The spray body (100) extends downward from the outer periphery of the liquid inlet conduit (200) to form a plurality of clamping arms (130); one end of the clamping arm (130) away from the spray body (100) extends toward the center line direction of the liquid outlet pipe (300) and is provided with a clamping protrusion (131); at least part of the clamping arm (130) is made of elastic material; an annular protrusion (310) is protruding outward from the outer side wall of the liquid outlet pipe (300); and each of the clamping protrusions (131) is clamped below the annular protrusion (310).

10. The household appliance according to claim 8, characterized in that: A butt joint pipe (320) is embedded inside the liquid outlet pipe (300), the inner diameter of the butt joint pipe (320) is D1, the inner diameter of the liquid inlet conduit (200) gradually decreases from top to bottom, and the minimum diameter of the liquid inlet conduit (200) is D2, D1<D2.

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