CN217244236U - Spray arm structure and dish washer - Google Patents

Abstract

The utility model discloses a spray arm structure and dish washer belongs to domestic appliance technical field, exists ponding and hangs pearl scheduling problem design for solving current spray arm surface. The utility model provides a spray arm structure includes: the three sub-spray arms comprise spray arm main bodies and hydrophobic parts, and the hydrophobic parts at least partially cover the spray arm main bodies; and the water inlet part is communicated to the three sub-spray arms respectively, and a water inlet hole is formed in the water inlet part. The utility model provides a sub-spray arm of spray arm structure and dish washer includes spray arm main part and hydrophobic portion, and hydrophobic portion has strengthened the direction of surperficial rivers, makes the washing liquid can the quick deionization spray arm surface, reduces the ponding on sub-spray arm surface and hangs the pearl, avoids ponding and hangs the pearl drippage to dry tableware surface and leads to clean tableware to be polluted, and holistic drying efficiency is higher in the dish washer.

Description

Spray arm structure and dish washer

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a spray arm structure and dish washer including this spray arm structure.

Background

The dish washing machine is provided with a spray arm, a water outlet hole is formed in the spray arm, and washing liquid is sprayed to tableware to be washed through the water outlet hole. The detergent with certain flow rate and pressure can wash away stains and residues on the tableware, and automatic and efficient cleaning of the tableware is achieved.

The spray arm is usually provided with a driving hole and a washing hole, the driving hole is obliquely arranged, and when the washing liquid is sprayed out from the driving hole, the washing liquid can generate reverse thrust to the spray arm, so that the spray arm rotates; the washing holes are vertically arranged, the washing liquid sprayed from the washing holes can directly wash the surface of the tableware to be washed, and the washing effect is good.

The drawbacks of the spray arm of the dishwasher include: the spray arm surface has problems of water accumulation and hanging beads, and once the water accumulation or the hanging beads drop on the surface of the washed tableware, the tableware is polluted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spray arm structure and including this spray arm structure's dish washer can effectively reduce ponding and hang the pearl, and the tableware is clean more thoroughly.

To achieve the purpose, on one hand, the utility model adopts the following technical scheme:

a spray arm structure comprising: three sub-spray arms, wherein each sub-spray arm comprises a spray arm main body and a hydrophobic part, and the hydrophobic part at least partially covers the spray arm main body; and the water inlet part is communicated to the three sub-spray arms respectively, and a water inlet hole is formed in the water inlet part.

In one of the preferred embodiments, the hydrophobic portion is made of metal or hydrophobic plastic.

In one preferred embodiment, a step surface is arranged on the side surface of the spray arm main body, and the edge of the water-repellent part abuts against the step surface.

In one preferred embodiment, the water-repellent part is in a U-shaped groove structure, and the water-repellent part is buckled on the spray arm main body.

In one preferred embodiment, the upper surface of the spray arm body comprises two side inclined surfaces, the two side inclined surfaces are symmetrically arranged on two sides of the upper surface, and the height of the side inclined surfaces is gradually reduced along the axial direction far away from the spray arm body. In one preferred embodiment, the hydrophobic parts are respectively attached to the two side inclined surfaces.

In one preferred embodiment, the upper surface of the spray arm main body further comprises a top plane, the two side inclined planes are symmetrically connected to two sides of the top plane, and the hydrophobic part is attached to the top plane.

In one preferred embodiment, two reinforcing ribs are arranged in the spray arm main body, the extending direction of each reinforcing rib is the same as that of the spray arm main body, and the two reinforcing ribs and the inner wall of the spray arm main body enclose to form a liquid flow channel.

In one preferred embodiment, the distance between two of said ribs decreases linearly in the direction of flow of the washing liquid.

In one preferred embodiment, the width L of the nozzle arm body is linearly reduced or constant in the direction of the flow of the washing liquid.

In one preferred embodiment, the sub-spray arm is provided with an auxiliary spray hole, and the cross section of the auxiliary spray hole is circular or rectangular.

On the other hand, the utility model adopts the following technical scheme:

the dishwasher comprises a box body and the spray arm structure, wherein the spray arm structure is arranged in the box body.

The utility model provides a spray arm structure includes three sub-spray arms, and sub-spray arm includes spray arm main part and hydrophobic portion, and hydrophobic portion has strengthened the direction of surperficial rivers, makes the washing liquid can quick deionization spray arm surface, reduces the ponding and string pearl on sub-spray arm surface, avoids ponding and string pearl drippage to dry tableware surface and leads to clean tableware to be polluted, and holistic drying efficiency is higher in the dish washer.

The utility model provides a dish washer includes foretell spray arm structure, leads rivers through setting up the hydrophobic portion, reduces ponding and string pearl on sub-spray arm surface, avoids ponding and string pearl to drip dry tableware surface and leads to clean tableware to be contaminated, and the drying rate of tableware is fast.

Drawings

Fig. 1 is a schematic structural diagram of a spray arm structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another spray arm structure provided in the embodiment of the present invention;

fig. 3 is a partial cross-sectional view of a spray arm construction provided in accordance with an embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

In the figure:

1. a sub-spray arm; 2. a water inlet part; 11. a spray arm body; 12. a hydrophobic portion; 13. a step surface; 14. reinforcing ribs; 15. a liquid flow passage; 16. auxiliary spraying holes; 21. a water inlet hole; 111. a top plane; 112. a side bevel.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The embodiment provides a spray arm structure and a dishwasher comprising the same. The dishwasher is preferably a spray dishwasher, the washing liquid being sprayed to wash the dishes to be cleaned. As shown in fig. 1 to 4, the spray arm structure includes three sub-spray arms 1 and a water inlet portion 2, and the three sub-spray arms 1 are respectively communicated to the water inlet portion 2. The water inlet part 2 is provided with a water inlet hole 21, and the washing liquid reaches the sub-spray arm 1 through the water inlet hole 21 and the water inlet part 2, and then is sprayed out from a water outlet hole on the sub-spray arm 1 to wash out the tableware to be cleaned, so that the automatic cleaning of the tableware is realized. The structure composed of three sub-spray arms 1 and one water inlet part 2 can also be called a three-fork spray arm.

The sub-spray arm 1 includes a spray arm body 11 and a water repellent part 12, and the water repellent part 12 at least partially covers the spray arm body 11. The hydrophobic part 12 enhances the guidance of surface water flow, so that the washing liquid can quickly deionize the surface of the spray arm 1, the water accumulation and the hanging beads on the surface of the sub-spray arm 1 are reduced, the phenomenon that the cleaned tableware is polluted because the water accumulation and the hanging beads drop on the surface of the dried tableware is avoided, and the overall drying efficiency in the dish washing machine is higher.

The water discharge portion 12 may be provided only on a surface of the spray arm body 11 on which the water outlet hole is provided, and the washing liquid is basically dropped on only the surface after being sprayed from the water outlet hole, and is not dropped on other surfaces. As long as set up water-repellent portion 12 on the face that is provided with the apopore of spray arm main part 11, can make the washing liquid that drips on spray arm main part 11 break away from fast, reduce the ponding and the string pearl on sub-spray arm 1 surface, processing is convenient, and the cost is low.

The hydrophobic part 12 can also completely cover the outer surface of the spray arm main body 11, so that the washing liquid is prevented from forming water accumulation and beads hanging on the surface of the spray arm main body 11 in an all-around manner, the washed tableware is prevented from being polluted by the water accumulation and the beads hanging, and the drying speed in the dish washing machine is higher.

The spray arm structure comprises three sub spray arms 1 which are arranged at equal intervals. Compared with a straight-line spray arm, the three sub-spray arms 1 which work simultaneously increase the frequency of washing the tableware by the washing liquid in unit time, have stronger cleaning capability on the tableware, and can more thoroughly wash residual stains and residues on the surface of the tableware.

The hydrophobic part 12 can be made of metal, has strong liquid guiding capability, mature preparation process of the material and low processing cost. The metal material has strong shaping ability, can be bent into any shape, and can be suitable for the spray arm main body 11 with various shapes. The metal material can be punched with a hole conveniently, an avoiding space can be reserved for the water outlet hole in the spray arm main body 11, and the spraying of the washing liquid from the water outlet hole is not influenced.

The hydrophobic portion 12 may also be made of hydrophobic plastic, which has a sufficiently good guiding effect for the water flow. The hydrophobic plastic has low manufacturing cost, convenient processing, high processing efficiency and can be produced in large batch by using a die.

The specific shape and attachment method of the hydrophobic portion 12 are not limited, and the hydrophobic portion may be at least partially covered on the arm main body 11. Preferably, the hydrophobic portion 12 has a U-shaped groove structure, i.e., a U-shape in cross section perpendicular to the extending direction of the hydrophobic portion 12. The water drainage part 12 is buckled on the spray arm main body 11, the width of the water drainage part 12 is equal to or slightly less than that of the spray arm main body 11, the water drainage part 12 and the spray arm main body 11 are firmly clamped together, and the water drainage part 12 cannot be thrown out of the spray arm main body 11 when the spray arm main body 11 rotates.

In order to improve the stability of the water drain portion 12, a stepped surface 13 is provided on a side surface of the arm body 11, and an edge of the water drain portion 12 abuts on the stepped surface 13. The area of the upper surface of the spray arm body 11 is relatively large, and there may be some unevenness due to problems such as processing accuracy and structural design, and the water-repellent portion 12 is difficult to completely adhere to the upper surface of the spray arm body 11, which causes unstable connection between the water-repellent portion 12 and the spray arm body 11, and the water-repellent portion 12 is likely to shake during rotation of the spray arm body 11. The step surface 13 provided on the side surface of the spray arm body 11 has a relatively small area and can be easily processed to be straight, and the edge of the drain part 12 can also be processed to be straight. The step surface 13 can play a role in supporting the water-draining part 12 and can also play a role in limiting. After the edge of the water drainage part 12 abuts against the step surface 13, the position of the water drainage part 12 relative to the spray arm main body 11 is more stable, and the water drainage part 12 cannot easily shake in the rotation process of the spray arm main body 11. The structure has no requirement on the shape of the water-repellent part 12, and the edge of the water-repellent part 12 can be positioned and supported by the step surface 13.

As shown in fig. 4, the upper surface of the spray arm body 11 includes two side inclined surfaces 112, and the two side inclined surfaces 112 are symmetrically disposed at both sides of the upper surface, i.e., the two side inclined surfaces 112 are symmetrically disposed at both sides of the axis of the spray arm body 11. The height of the side slope 112 gradually decreases in the direction away from the axis of the spray arm body 11, that is, the edge of the side slope 112 near the axis of the spray arm body 11 is higher than the edge away from the axis of the spray arm body 11.

The spray arm main part 11 high and gradually lean out and extend decurrent structure in this kind of centre, can strengthen the rivers direction on spray arm 1 surface, and the use of cooperation hydrophobic portion 12 can reduce the remaining of washing liquid, reduces ponding and hangs the pearl, and the waterlogging caused by excessive rainfall performance is good, promotes the drying effect of complete machine.

The upper surface of the spray arm body 11 may include only two side slopes 112, and the two side slopes 112 are directly connected. The upper surface of the spray arm main body 11 may further include a top plane 111, two side inclined planes 112 are symmetrically connected to two sides of the top plane 111, and the water outlet holes are formed in the top plane 111.

When the upper surface of the spray arm body 11 only comprises two side inclined surfaces 112, the water drainage part 12 is respectively attached to the two side inclined surfaces 112; when the upper surface of the spray arm body 11 includes the top plane 111 and the two side slopes 112, the hydrophobic portion 12 is respectively attached to the top plane 111 and the two side slopes 112, that is, the hydrophobic portion 12 also forms a structure with a high middle part and gradually inclines outwards and extends downwards, the height change is utilized to enhance the guiding effect on the washing liquid, and the water accumulation and the hanging beads are reduced.

The main factor influencing the pressure and the flow rate of the washing liquid sprayed from the water outlet is the width of a space for containing the washing liquid in the spray arm main body 11, when the space is wide, the washing liquid can be sprayed from the water outlet after being filled into the water inlet 21 for a long time, and the water pressure and the flow rate at the water outlet are low; when the space is narrow, water can be discharged from the water outlet hole as soon as possible, and the water pressure is higher and the flow speed is higher. In order to ensure that the spray arm body 11 has sufficient strength and avoid bending deformation and even breakage of the spray arm body 11 under the action of water pressure and rotational inertia force, the spray arm body 11 cannot be designed to be too thin.

As shown in fig. 1 and 4, the width L of the spray arm body 11 is linearly reduced in the flow direction of the washing liquid, so that the water pressure loss is small, the water discharge pressure is high, the manufacturing cost is low, and the overall weight is light. As shown in fig. 2, the spray arm body 11 may also have the same width, higher strength, long service life and convenient processing.

In order to further reduce the water pressure loss, in the present embodiment, two ribs 14 are provided in the spray arm main body 11, the extending direction of the ribs 14 is the same as the extending direction of the spray arm main body 11, the two ribs 14 surround the inner wall of the spray arm main body 11 to form a liquid flow passage 15, and the water outlet hole communicates with the liquid flow passage 15. Under the condition of ensuring that the spray arm main body 11 has enough width, the liquid flow passage 15 can be made narrower, water can be discharged as soon as possible after water is fed, and the water pressure and the flow speed at the water outlet can meet the use requirements. Preferably, the distance between the two ribs 14 decreases linearly in the flow direction of the washing liquid, and the water pressure loss is reduced by narrowing the cross-sectional area of the liquid flow passage 15, thereby increasing the water outlet pressure.

Except enclosing and closing to form the liquid runner 15, the strengthening rib 14 of vertical setting in spray arm main part 11 can also play the effect that increases spray arm main part 11 bulk strength, avoids spray arm main part 11's upper surface or lower surface to take place to cave in or collapse, prolongs spray arm main part 11's life.

As shown in fig. 1, the sub-spray arm 1 is provided with an auxiliary spray hole 16, and the cross section of the auxiliary spray hole 16 is circular or rectangular. The difference from the conventional driving hole is that: the axial direction of the auxiliary spray holes 16 is vertical to the surface of the sub-spray arm 1, and the washing liquid sprayed from the auxiliary spray holes 16 can better wash the tableware to be washed and has cleaning capacity. The difference from the conventional water outlet hole is that: the water outlet of the auxiliary spray hole 16 is in a fine column shape, is used for assisting in cleaning certain dead corner areas in the dish washing machine, is used as a supplement for a conventional water outlet hole, enlarges the washing range and is beneficial to improving the cleaning effect of the whole machine.

It should be noted that the above description is only for the purpose of illustrating the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (12)

1. A spray arm structure, comprising:

three sub-spray arms (1), wherein each sub-spray arm (1) comprises a spray arm main body (11) and a hydrophobic part (12), and the hydrophobic part (12) at least partially covers the spray arm main body (11); and (c) a second step of,

the water inlet parts (2) are respectively communicated with the three sub-spraying arms (1), and water inlet holes (21) are formed in the water inlet parts (2).

2. Spray arm structure according to claim 1, characterized in that the hydrophobic part (12) is made of metal or hydrophobic plastic.

3. The spray arm structure according to claim 1, wherein a stepped surface (13) is provided on a side surface of the spray arm main body (11), and an edge of the water drain portion (12) abuts on the stepped surface (13).

4. The spray arm structure according to claim 3, wherein the water-repellent section (12) is a U-shaped groove structure, and the water-repellent section (12) is snap-fitted to the spray arm body (11).

5. The spray arm structure according to claim 1, characterized in that the upper surface of the spray arm main body (11) comprises two side inclined surfaces (112), the two side inclined surfaces (112) are symmetrically arranged on two sides of the upper surface, and the height of the side inclined surfaces (112) is gradually reduced along the axial direction far away from the spray arm main body (11).

6. Spray arm structure according to claim 5, characterized in that the hydrophobic portion (12) is attached to both of the side bevels (112), respectively.

7. The spray arm structure according to claim 5, characterized in that the upper surface of the spray arm main body (11) further comprises a top plane (111), the two side inclined planes (112) are symmetrically connected to two sides of the top plane (111), and the hydrophobic part (12) is attached to the top plane (111).

8. The spray arm structure according to any one of claims 1 to 7, wherein two reinforcing ribs (14) are arranged in the spray arm main body (11), the extending direction of the reinforcing ribs (14) is the same as the extending direction of the spray arm main body (11), and the two reinforcing ribs (14) and the inner wall of the spray arm main body (11) enclose to form a liquid flow channel (15).

9. Spray arm construction according to claim 8, characterized in that the distance between two of the ribs (14) decreases linearly in the direction of the flow of washing liquid.

10. Spray arm structure according to any of claims 1-7, characterized in that the width L of the spray arm body (11) decreases linearly or the width L does not change in the direction of the flow of washing liquid.

11. The spray arm structure according to any one of claims 1 to 7, wherein the sub-spray arm (1) is provided with an auxiliary spray hole (16), and the cross section of the auxiliary spray hole (16) is circular or rectangular.

12. A dishwasher comprising a cabinet, further comprising a spray arm arrangement as claimed in any one of claims 1 to 11, the spray arm arrangement being disposed in the cabinet.

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