CN219557203U - Spray arm and dish washer - Google Patents

Abstract

The utility model relates to the technical field of kitchen electricity, in particular to a spray arm and a dish washer. The spray arm comprises a spray arm body and a first spray head, wherein the spray arm body is provided with a spray arm cavity, the first spray head is arranged on the wall surface of the spray arm body, a water outlet through hole and a driving through hole are formed in the first spray head, the water outlet through hole is communicated with the spray arm cavity, the central line of the water outlet through hole is arranged at an included angle with the wall surface, the driving through hole is formed by extending the inner wall of the water outlet through hole in the direction deviating from the water outlet through hole, and fluid sprayed from the driving through hole can drive the first spray head to rotate relative to the spray arm body. When the rivers are spouted from the play water through-hole, a part of rivers can be followed the drive through-hole blowout, under the drive effect of rivers, first shower nozzle can rotate relative spray arm body, because the play water through-hole is inclination and sprays, when first shower nozzle is rotatory, the area that the orbit of play water through-hole blowout rivers covered is bigger, and the cleaning performance is better. The dish washer has good cleaning effect by applying the spray arm.

Description

Spray arm and dish washer

Technical Field

The utility model relates to the technical field of kitchen electricity, in particular to a spray arm and a dish washer.

Background

Dish washing machines are devices for automatically washing dishes such as bowls, chopsticks, plates, dishes, knives, forks and the like, and are widely used in restaurants, families and the like where various kinds of dishes are needed. With the improvement of living standard, dish-washing machines start to enter home life, and in order to improve the practicality and convenience of the dish-washing machines, dish-washing machines with various styles are generated.

In the prior art, the tableware is cleaned in a spray arm rotary spraying mode, the spray arm comprises a spray arm body and a plurality of spray heads, the spray arm body is usually fixed with the spray heads, the spraying direction of the spray heads is also fixed, the coverage area of the spray heads in a single spraying direction is limited, and cleaning dead angles exist.

Accordingly, there is a need to design a new spray arm and dishwasher to ameliorate the above problems.

Disclosure of Invention

The utility model aims to provide a spray arm, when water flow is sprayed from a water outlet through hole, a part of water flow is sprayed from a driving through hole, under the driving action of the water flow, a first spray head can rotate relative to a spray arm body, and because the water outlet through hole sprays at an inclined angle, when the first spray head rotates, the track covered by the water flow sprayed from the water outlet through hole is larger, and the cleaning effect is better.

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

the utility model provides a spray arm, includes spray arm body and first shower nozzle, the spray arm body has spray arm cavity, first shower nozzle sets up on the wall of spray arm body, go out water through-hole and drive through-hole have been seted up on the first shower nozzle, go out water through-hole with spray arm cavity is linked together, go out water through-hole's central line with the contained angle setting is personally submitted to the wall, drive through-hole by go out water through-hole's inner wall orientation and deviate from go out water through-hole's direction extends to form, follow drive through-hole spun fluid can drive first shower nozzle is relative spray arm body rotates.

Preferably, the driving through hole and the central line are eccentrically arranged; and/or

The extending direction of the driving through hole is parallel to the wall surface; and/or

The ratio of the diameter of the driving through hole to the diameter of the water outlet through hole is 0.5-1.

Preferably, the wall surface is provided with a plugging hole, one of the side wall of the plugging hole and the first spray head comprises a plugging groove, and at least part of the other one of the side wall of the plugging hole and the first spray head is plugged in the plugging groove.

As a preferred scheme, the first shower nozzle includes first spacing portion, main part and second spacing portion, first spacing portion with the spacing portion of second sets up on the main part and arrange along the direction interval of predetermineeing, first spacing portion the main part with the spacing portion of second forms jointly the grafting groove, the wall is pegged graft in the grafting groove.

As a preferable scheme, the second limiting part comprises a cantilever part and a clamping part, and two ends of the cantilever part are respectively and fixedly connected with the main body part and the clamping part.

As a preferable scheme, the clamping part comprises a trigger surface, when the first spray head presses towards the plug hole, the opening edge of the plug hole is pressed against the trigger surface, so that the cantilever part bends towards the center line direction of the plug hole, and the clamping part enters the spray arm cavity through the plug hole; and/or

The second limiting parts are arranged at least two, and the at least two second limiting parts are arranged at intervals along the circumferential direction of the main body part.

As a preferred scheme, the spray arm further comprises a second spray head, one of the spray arm body and the second spray head comprises a first limiting piece, the other one of the spray arm body and the second spray head comprises a second limiting piece, and the first limiting piece is matched with the second limiting piece to limit the relative position of the spray arm body and the spray head.

Preferably, the spray arm body is detachably connected with the first spray head.

Preferably, the first nozzle is an elastic member, and the aperture of the water outlet through hole changes along with the change of the water flow pressure in the spray arm cavity.

Another object of the present utility model is to provide a dish washer, which has a good washing effect.

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

a dishwasher comprising a spray arm as described above.

The utility model has the beneficial effects that:

the spray arm comprises a spray arm body and a first spray head, wherein the spray arm body is provided with a spray arm cavity, the first spray head is arranged on the wall surface of the spray arm body, a water outlet through hole and a driving through hole are formed in the first spray head, the water outlet through hole is communicated with the spray arm cavity, the central line of the water outlet through hole is arranged at an included angle with the wall surface, the driving through hole is formed by extending the inner wall of the water outlet through hole in the direction deviating from the water outlet through hole, and fluid sprayed from the driving through hole can drive the first spray head to rotate relative to the spray arm body. When the rivers are spouted from the play water through-hole, a part of rivers can be followed the drive through-hole blowout, under the drive effect of rivers, first shower nozzle can rotate relative spray arm body, because the play water through-hole is inclination and sprays, when first shower nozzle is rotatory, the area that the orbit of play water through-hole blowout rivers covered is bigger, and the cleaning performance is better.

The dish washer provided by the utility model has a good cleaning effect by applying the spray arm.

Drawings

Fig. 1 is a schematic view of a structure of a dishwasher according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at C;

FIG. 3 is a schematic view of a spray arm according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a spray arm (excluding a first spray head and a second spray head) according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a spray arm provided by an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a cross-sectional view of a first spray head according to an embodiment of the present utility model;

FIG. 8 is a schematic structural diagram of a first nozzle according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a second first spray head provided in an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a third first spray head provided in an embodiment of the present utility model;

FIG. 11 is a schematic structural diagram of a second nozzle according to an embodiment of the present utility model;

fig. 12 is a schematic structural diagram of an assembly of a second nozzle and a nozzle arm body according to an embodiment of the present utility model.

In the figure:

100. dish washing machine;

10. a spray arm; 1. a spray arm body; 11. a spray arm cavity; 12. a wall surface; 121. a plug hole; 13. a first limiting member; 2. a first nozzle; 21. a water outlet through hole; 211. a diversion section; 212. a straight line segment; 22. a first connector; 221. a first limit part; 222. a main body portion; 2221. a driving through hole; 223. a second limit part; 2231. a cantilever portion; 2232. a clamping part; 22321. triggering a surface; 224. a plug-in groove; 3. a buckle; 4. a spray arm shaft; 5. a second nozzle; 51. a second water outlet through hole; 52. a second connector; 521. a third limit part; 522. a second body portion; 523. a fourth limit part; 5231. a second cantilever portion; 5232. a second clamping part; 524. a second insertion groove; 53. a second limiting piece;

20. bowl basket; 210. a bowl basket frame; 220. a roller; 30. a spray arm water pipe; 40. a water inlet pipe; 60. a clamping piece; 80. a guide rail; 90. a body; 91. a receiving chamber.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 and 2, the embodiment of the present utility model provides a dishwasher 100, the dishwasher 100 includes a body 90, a bowl basket 20, a spray arm water pipe 30, a spray arm 10 and a water inlet pipe 40, wherein the body 90 is provided with a receiving cavity 91, the bowl basket 20 is disposed in the receiving cavity 91 and is used for carrying tableware to be washed (not shown in the drawing), the water inlet pipe 40 is fixed on the inner wall of the receiving cavity 91, a water source (not shown in the drawing), the water inlet pipe 40, the spray arm water pipe 30 and the spray arm 10 are sequentially connected, water flow provided by the water source is sprayed from the spray arm 10 after passing through the water inlet pipe 40, the spray arm water pipe 30 and the spray arm 10 in sequence, and the sprayed water flow is used for washing the tableware to be washed in the bowl basket 20 below the bowl basket 20.

As shown in fig. 1-2, the dishwasher 100 further includes a clamping member 60, the clamping member 60 is fixedly connected with the spray arm water pipe 30, and the clamping member 60 is clamped with the bowl basket 20, so that the spray arm water pipe 30 is clamped and regulated on the bowl basket 20, and the bowl basket 20 can stably bear the spray arm water pipe 30. Of course, the clamping member 60 may be replaced by other fixing members capable of fixing the shower arm water pipe 30 on the bowl basket 20, and the fixing members may be selected from screws, pins, etc., which are not limited in this embodiment.

As shown in fig. 1-2, the dishwasher 100 further includes a guide rail 80 disposed on an inner wall of the accommodating cavity 91, the guide rail 80 extends along a drawing direction of the bowl basket 20, the bowl basket 20 includes a bowl basket frame 210 and a roller 220 pivoted with the bowl basket frame, the roller 220 can move along the guide rail 80, the guide rail 80 can achieve a better guiding effect on the roller 220, the bowl basket 20 can be guaranteed to achieve a better drawing effect along a predetermined direction, and the bowl basket 20 is prevented from deflecting in the drawing process.

As shown in fig. 1-2, since the shower arm water pipe 30 follows the bowl basket 20, the free end of the shower arm water pipe 30 is separated from the free end of the inlet pipe 40 when the bowl basket 20 is at least partially withdrawn from the body 90. When the bowl basket 20 is completely pushed into the machine body 90, the free end of the spray arm water pipe 30 is spliced with the free end of the water inlet pipe 40, so that the water in the water inlet pipe 40 can enter the spray arm water pipe 30 and the spray arm 10.

As shown in fig. 2, 3 and 4, the spray arm 10 includes a spray arm body 1, a first spray head 2, a second spray head 5, a spray arm shaft 4 and a buckle 3, where the spray arm shaft 4 and the buckle 3 are located at the bottom axial center of the spray arm body 1, and the spray arm shaft 4 and the buckle 3 are used to fix the spray arm body 1 on a spray arm seat or a spray arm water pipe 30 at the bottom of the dishwasher 100, and enable the spray arm body 1 to perform a rotational motion around the spray arm shaft 4 under the action of water flow. Under the effect of buckle 3, spray arm body 1 can rotate relative spray arm seat or spray arm water pipe 30, simultaneously, spray arm body 1 can not follow spray arm seat or spray arm water pipe 30 and drop.

As shown in fig. 2, 3 and 4, the spray arm body 1 includes a wall 12 and has a spray arm cavity 11, a first spray head 2 and a second spray head 5 are installed on the wall 12, a water outlet through hole 21 communicated with the spray arm cavity 11 is formed on the first spray head 2, a second water outlet through hole 51 communicated with the spray arm cavity 11 is formed on the second spray head 5, and water in the spray arm seat or the spray arm water pipe 30 can be sprayed outwards through the spray arm shaft 4, the spray arm cavity 11, the water outlet through hole 21 and the second water outlet through hole 51 in sequence.

As shown in fig. 3 to 5, the first spray head 2 is a cleaning spray head, the second spray head 5 is a driving spray head, the number of the cleaning spray heads is large and the cleaning spray heads are scattered on the wall surface 12, the spraying direction of the cleaning spray heads is generally perpendicular to the wall surface 12 or is arranged at an included angle, and the water flow sprayed by the cleaning spray heads is mainly used for washing and cleaning tableware. The driving nozzle is generally located at the corner position of the spray arm body 1, the spraying direction of the driving nozzle forms an included angle with the wall surface 12, and the spraying direction of the driving nozzle is opposite to the rotating direction of the spray arm body 1, when water flow is sprayed from the driving nozzle, the spray arm body 1 can rotate around the spray arm shaft 4 along the direction opposite to the spraying direction of the driving nozzle under the reaction force of the water flow.

In the prior art, the spray arm body 1 is usually fixed with the first spray head 2, the spray direction of the first spray head 2 is also fixed, the coverage area of the first spray head 2 with a single spray direction is limited, and the spray arm 10 has a cleaning dead angle.

In order to solve the above problem, as shown in fig. 3 to 7, a driving through hole 2221 is further formed in the first nozzle 2 of the present embodiment, the center line M of the water outlet through hole 21 is disposed at an included angle (acute angle) with the wall surface 12, the driving through hole 2221 is formed by extending the inner wall of the water outlet through hole 21 in a direction away from the water outlet through hole 21, and the fluid ejected from the driving through hole 2221 can drive the first nozzle 2 to rotate relative to the nozzle arm body 1. When the water flow is sprayed out from the water outlet through hole 21, a part of the water flow can be sprayed out from the driving through hole 2221, under the driving action of the water flow, the first spray head 2 can rotate relative to the spray arm body 1, and because the water outlet through hole 21 is sprayed at an inclined angle, when the first spray head 2 rotates, the area covered by the track of the water flow sprayed out from the water outlet through hole 21 is larger, and the cleaning effect is better.

Specifically, as shown in fig. 6 and 7, the driving through hole 2221 is arranged eccentrically with respect to the center line M, and when the water flow is discharged from the water outlet through hole 21, a part of the water flow is discharged from the driving through hole 2221 in the D direction, and since the driving through hole 2221 is arranged eccentrically with respect to the center line M, the velocity V1 of the fluid discharged from the driving through hole 2221 can be decomposed into V1 _{Radial direction} V1 _{Tangential direction} Wherein V1 _{Radial direction} Is intersected with the central line M, V1 _{Tangential direction} The direction of the first nozzle 2 is tangential to the outer periphery of the first nozzle 2, when the water flow is sprayed, the first nozzle 2 rotates in the direction B relative to the nozzle arm body 1 under the driving action of the water flow, V1 _{Tangential direction} Opposite to the direction B, through simple and ingenious structural design, under the condition that does not need to increase extra power structure, can realize the rotation of first shower nozzle 2 relative spray arm body 1, can realize the quick assembly disassembly of spray arm 10, and spray arm 10 is with low costs.

Further, as shown in fig. 6, the direction in which the drive through holes 2221 extend is parallel to the wall surface 12, so that it is possible to avoid a force of ejecting the fluid from the drive through holes 2221 having a component in the up-down direction, and on the other hand, it is possible to avoid a problem that the first head 2 is not rotated due to a downward component generated by ejecting the fluid from the drive through holes 2221; on the other hand, the problem that the first head 2 is detached from the arm body 1 due to upward force component generated by the ejection of the fluid from the drive through hole 2221 can be avoided.

In addition, as shown in fig. 6 and 7, the ratio of the diameter of the driving through hole 2221 to the diameter of the water outlet through hole 21 is 0.5 to 1, that is, the diameter of the driving through hole 2221 is slightly smaller than the diameter of the water outlet through hole 21, so that when water is sprayed from the water outlet through hole 21, a part of the water is sprayed from the driving through hole 2221, the problem that the water cannot be sprayed from the driving through hole 2221 or external air is sucked into the water outlet through hole 21 through the driving through hole 2221 due to the too small diameter of the driving through hole 2221 is avoided, and the first spray head 2 can be rotated relatively well with respect to the spray arm body 1 is ensured.

As shown in fig. 4 and 6, the wall 12 is provided with a plugging hole 121, at least part of the first spray head 2 is plugged in the plugging hole 121, the first spray head 2 is provided with a plugging groove 224, the wall 12 is plugged in the plugging groove 224, the wall 12 is matched with the plugging groove 224, the first spray head 2 can rotate relative to the wall 12, and meanwhile, the first spray head 2 cannot fall off from the wall 12. In other embodiments, as shown in fig. 10, a plugging slot 224 may be formed on a side wall of the plugging hole 121, and the first nozzle 2 includes a plugging protrusion, where the plugging protrusion is plugged into the plugging slot 224, so that the first nozzle 2 can rotate relative to the wall 12, and meanwhile, the first nozzle 2 cannot fall off from the wall 12.

As shown in fig. 6, 8 and 9, the first nozzle 2 includes a first connector 22, the first connector 22 includes a first limiting portion 221, a main body portion 222 and a second limiting portion 223, the first limiting portion 221 and the second limiting portion 223 are disposed on the main body portion 222 and are arranged at intervals along a preset direction, the first limiting portion 221, the main body portion 222 and the second limiting portion 223 together form an inserting groove 224, and the wall 12 is inserted into the inserting groove 224. When the first spray head 2 is to be assembled on the spray arm body 1, the second limiting part 223 is forced to extrude the spray hole towards the plug hole 121, so that the plug hole 121 deforms, the second limiting part 223 stretches into the plug hole 121, then the second limiting part 223 recovers the original shape, under the limiting action of the first limiting part 221 and the second limiting part 223, the first spray head 2 is fixed on the spray arm body 1, the first limiting part 221 and the second limiting part 223 can prevent the first spray head 2 from falling off from the spray arm body 1, and the good use effect of the spray arm 10 is ensured. When the first spray head 2 needs to be disassembled, the first spray head 2 is pulled outwards only by force, and the second limiting part 223 is separated from the inserting hole 121 after being deformed under the action of force, so that the operation is convenient and quick. Meanwhile, the diameter of the insertion hole 121 can be set larger, so that an operator can more easily view and clean the inside of the spray arm body 1 than the spray arm 10 of a general fixed nozzle type.

As shown in fig. 6, the spray arm body 1 is detachably connected with the first spray head 2, so that the first spray head 2 can be conveniently detached and replaced, and the replacement and cleaning of the first spray head 2 by an operator are improved. Because all the first spray heads 2 are detachable structures, the cavitation type first spray heads 2 can be used completely, and can also be used together with other types of first spray heads 2, and when in test, the combination modes of different first spray heads 2 can be adjusted according to the actual cleaning effect, so that the optimal cleaning effect is achieved, and the verification time of repeatedly proofing different spray arms 10 is shortened. When the spray arm 10 is cleaned, the first spray head 2 can be directly taken out, and the first spray head 2 and the spray arm body 1 can be cleaned independently. In addition, because the first spray heads 2 are completely detached, if one first spray head 2 is damaged, only a single first spray head 2 is needed to be replaced during maintenance, the whole spray arm 10 is not needed to be replaced, the operation is simple, and the replacement cost of the first spray head 2 is also greatly reduced. Meanwhile, different first spray heads 2 can be replaced according to different tableware, so that different tableware can be cleaned in a differentiated mode, and the optimal cleaning effect of the dish washer 100 is achieved. In addition, according to the placing condition of the tableware to be cleaned, the position of the first spray head 2 can be changed, so that the first spray head 2 can be aligned with the tableware which is difficult to clean, and the optimal cleaning effect can be achieved even if the placing positions of the tableware are different.

As shown in fig. 6 and 8, the second limiting portion 223 of the present embodiment may be a fastening structure, and by setting the fastening structure, the quick assembly and disassembly of the first nozzle 2 and the spray arm body 1 can be realized, so as to improve the assembly and disassembly efficiency of the first nozzle 2 and the spray arm body 1.

Specifically, as shown in fig. 6 and 8, the second stopper 223 includes a cantilever portion 2231 and an engagement portion 2232, and both ends of the cantilever portion 2231 are fixedly connected to the main body 222 and the engagement portion 2232, respectively, so that the cantilever portion 2231 is in an elongated state, and thus the cantilever portion 2231 can be elastically deformed to a certain degree. When the first spray head 2 is to be assembled on the spray arm body 1, the fastening structure is aligned to the insertion hole 121 on the wall 12, and then the first spray head 2 is pressed downwards, the fastening structure deforms and is fastened into the insertion hole 121, and under the limiting action of the plate-shaped first limiting part 221 and the fastening structure, the first spray head 2 is fixed on the spray arm body 1. When the first spray head 2 needs to be disassembled, the first spray head 2 is pulled outwards only by force, and the buckling structure is deformed to be separated from the inserting hole 121 due to the stress effect, so that the operation is convenient and quick. As shown in fig. 6, the maximum distance between the engaging portion 2232 and the cantilever portion 2231 is 2mm to 100mm, so that the engaging portion 2232 can be easily disengaged from the insertion hole 121 when the operator pulls the first nozzle 2 outward with a small force. Preferably, the maximum distance is preferably 40mm to 50mm, so that the locking portion 2232 can be firmly locked to the wall 12, and the operator can easily separate the first nozzle 2 from the wall 12.

Of course, in other embodiments, only the first limiting portion 221 may be configured as a snap-fit structure, and the first limiting portion 221 and the second limiting portion 223 may be configured as a snap-fit structure at the same time.

As shown in fig. 6, the fastening structures are preferably arranged in three groups, and the three groups of fastening structures are distributed along the circumferential direction of the main body 222, so that all positions of the main body 222 in the circumferential direction can be firmly abutted against the wall 12. Specifically, three buckle structures are arranged at equal intervals along the circumference of the main body 222, so that the stress of each buckle structure is uniform, the buckle structures are prevented from being damaged, the service life of each buckle structure is prolonged, the replacement of a user on the first spray head 2 is reduced, and the consumable loss of the dish washer 100 is reduced. In other embodiments, the number of snap features may be two, four or more, and the number of snap features may be selected according to the size of the first nozzle 2.

As a preferred solution, as shown in fig. 6, the locking portion 2232 includes a trigger surface 22321, when an operator presses the first spray head 2 downward, the opening edge of the plug hole 121 abuts against the trigger surface 22321, the opening edge of the plug hole 121 applies a pressure to the locking portion 2232 moving toward the water outlet through hole 21, so as to bend the cantilever portion 2231 toward the water outlet through hole 21, so that the locking portion 2232 enters the spray arm cavity 11 through the plug hole 121, and the locking portion 2232 can be locked against the inner surface of the wall 12, so that the operator can quickly install the first spray head 2 on the wall 12 through a simple pressing action.

Specifically, the buckle structure can be made of materials capable of generating elastic deformation such as resin, plastic and rubber, the elastic deformation capability of the buckle structure after being stressed can be further improved, and all materials capable of generating elastic deformation are within the protection scope of the present disclosure.

In other embodiments, as shown in fig. 9, the first limiting portion 221 and the second limiting portion 223 are plate-shaped, and the cross sections of the first limiting portion 221 and the second limiting portion 223 are larger than the cross section of the insertion hole, so that the first limiting portion 221 and the second limiting portion 223 can be contacted with the wall surface 12 in a larger area, and the first nozzle 2 can be prevented from falling out from the nozzle arm body 1.

Because the first shower nozzle 2 and the spray arm body 1 adopt two different materials, the first shower nozzle 2 and the spray arm body 1 can adopt different colors, the manufactured spray arm 10 has richer colors, the spray arm 10 cannot be a single-color product, and the spray arm 10 is more attractive.

As shown in fig. 6, the first nozzle 2 is an elastic member, the aperture of the water outlet hole 21 changes with the change of the water flow pressure in the nozzle arm cavity 11, the elastic member has a characteristic that the elastic member deforms when receiving a certain pressure, and when the water pressure is large as a whole in the washing process, the water flow can squeeze the side wall of the first nozzle 2 when being ejected from the first nozzle 2, so that the first diameter of the outlet of the water outlet hole 21 of the first nozzle 2 becomes large, and the diameter of the ejected water flow is increased. When the washing pump power is reduced due to the influence of residues in the washing process, the water pressure provided by the washing pump is reduced, the force of water flow is relatively reduced, at the moment, the water flow is sprayed out from the first spray head 2, the first spray head 2 can shrink, the second diameter of the water outlet through hole 21 of the first spray head 2 is reduced, and the speed of the water flow can be increased, so that the water flow can be ensured, even if the water pressure fluctuates in the washing process, the first spray head 2 can automatically match with the corresponding pressure, and the diameter of the water outlet through hole 21 of the first spray head 2 is adjusted, so that the water flow spraying speed is ensured to be maintained in a higher stable state. Specifically, the first nozzle 2 may be made of an elastic material such as a rubber material or a silica gel, and all materials capable of generating elastic deformation are within the scope of the present disclosure.

As a preferred solution, as shown in fig. 6, when the spray arm cavity 11 is not filled with water, the cross-sectional area of the water outlet hole 21 gradually decreases along the flow direction of the water, and when the water is sprayed from the first spray head 2, the water is sprayed at a relatively high speed due to the gradually decreasing aperture, so that the cleaning effect of the dishwasher 100 is improved.

As a preferred solution, as shown in fig. 6, the water outlet hole 21 includes a diversion section 211 and a straight line section 212 sequentially connected along the flow direction of the water flow, the diversion section 211 is a circular arc transition surface, when the water flow fills the spray arm cavity 11, the water enters from the diversion section 211 of the first spray head 2, and is sprayed from the free end of the straight line section 212, the circular arc transition surface can reduce the resistance when the water flow passes, ensure the higher flow velocity of the water flow sprayed from the first spray head 2, and improve the cleaning effect of the dish washer 100.

As shown in fig. 11 and 12, one of the spray arm body 1 and the second spray head 5 includes a first limiting member 13, the other one of the two includes a second limiting member 53, and the first limiting member 13 and the second limiting member 53 cooperate to limit the relative positions of the spray arm body 1 and the second spray head 5, so that the uniqueness of the direction of the second spray head 5 when assembled on the spray arm 10 can be ensured, and the spray arm 10 can be ensured not to rotate by the second spray head 5 itself in the spraying process, and the water flow sprayed by the second spray head 5 is ensured to be sprayed in a set direction.

Specifically, one of the first stopper 13 and the second stopper 53 is a first protruding portion, and the other one of the two is a first recessed portion, so that the first protruding portion and the first recessed portion can be quickly positioned by matching the first protruding portion with the first recessed portion.

As shown in fig. 11 and 12, the first concave portion is a notch formed by inward concave edge of the second nozzle 5, and the first convex portion is a protrusion arranged on the wall 12, so that rapid insertion or separation of the notch and the protrusion can be realized. Of course, in other embodiments, the first recess may be an insertion through hole, and the protrusion and the insertion through hole may be positioned in a matching manner. Of course, in other embodiments, the first concave portion may be disposed on the wall 12, and the first convex portion may be disposed on the second nozzle 5, so that, by matching the first concave portion with the first convex portion, the uniqueness of the direction of the second nozzle 5 when the second nozzle is assembled on the spray arm 10 can be ensured, and the second nozzle 5 itself cannot rotate during the spraying process of the spray arm 10, so that the water flow sprayed by the second nozzle 5 is sprayed in a predetermined direction.

Further, as shown in fig. 12, the first limiting member 13 of the present embodiment is disposed outside the spray arm cavity 11, so that an operator can observe the relative position between the second spray head 5 and the spray arm body 1, and the operator can quickly and accurately align the first protruding portion with the first recessed portion. Of course, in other embodiments, the first limiting member 13 is disposed in the spray arm cavity 11, and the first protruding portion is hidden inside the spray arm body 1, so that the external appearance of the spray arm body 1 is more attractive.

The main structure of the second nozzle 5 is substantially the same as that of the first nozzle 2, as shown in fig. 11, the second nozzle 5 includes a second connector 52, the second connector 52 includes a third limiting portion 521, a second main portion 522, and a fourth limiting portion 523, the third limiting portion 521 and the fourth limiting portion 523 are disposed on the second main portion 522 and are arranged at intervals along a preset direction, the third limiting portion 521, the second main portion 522, and the fourth limiting portion 523 together form a second inserting groove 524, and the wall 12 is inserted into the second inserting groove 524. When the second nozzle 5 is to be assembled on the spray arm body 1, the fourth limiting part 523 is forced to extrude the spray hole towards the plug hole 121, so that the plug hole 121 is deformed, the fourth limiting part 523 stretches into the plug hole 121, then the fourth limiting part 523 restores the original shape, the second nozzle 5 is fixed on the spray arm body 1 under the limiting action of the third limiting part 521 and the fourth limiting part 523, and the second nozzle 5 can be prevented from falling off from the spray arm body 1 due to the arrangement of the third limiting part 521 and the fourth limiting part 523, so that the good use effect of the spray arm 10 is ensured. When the second nozzle 5 needs to be disassembled, the second nozzle 5 is pulled outwards by force, and the fourth limiting part 523 is deformed and then is separated from the inserting hole 121 due to the stress effect, so that the operation is convenient and quick. Meanwhile, the diameter of the insertion hole 121 can be set larger, so that an operator can more easily view and clean the inside of the spray arm body 1 than the spray arm 10 of a general fixed nozzle type.

As shown in fig. 11, the spray arm body 1 is detachably connected with the second spray head 5, so that the second spray head 5 can be conveniently detached and replaced, and the replacement and cleaning of the second spray head 5 by an operator are improved. Because all the second spray heads 5 are detachable structures, the cavitation type second spray heads 5 can be used completely, and can also be used together with other types of second spray heads 5, and during testing, the combination modes of different second spray heads 5 can be adjusted according to the actual cleaning effect so as to achieve the optimal cleaning effect and shorten the verification time of repeated sampling of different spray arms 10. When the spray arm 10 is cleaned, the second spray head 5 can be directly taken out, and the second spray head 5 and the spray arm body 1 are cleaned independently. In addition, because the fully-detachable second spray heads 5 are adopted, if one second spray head 5 is damaged, only a single second spray head 5 is needed to be replaced during maintenance, the whole spray arm 10 is not needed to be replaced, the operation is simple, and the replacement cost of the second spray heads 5 is also greatly reduced. Meanwhile, the second spray heads 5 can be replaced according to different tableware to realize different cleaning of different tableware and achieve the optimal cleaning effect of the dish washer 100. In addition, according to the placing condition of the tableware to be cleaned, the position of the second spray head 5 can be changed, so that the second spray head 5 can be aligned with the tableware which is difficult to clean, and the optimal cleaning effect can be achieved even if the placing positions of the tableware are different.

As shown in fig. 11, the fourth limiting portion 523 in this embodiment may be a fastening structure, and by setting the fastening structure, the second nozzle 5 and the spray arm body 1 can be quickly assembled and disassembled, so as to improve the assembly and disassembly efficiency of the second nozzle 5 and the spray arm body 1.

Specifically, as shown in fig. 11, the fourth limiting portion 523 includes a second cantilever portion 5231 and a second engaging portion 5232, and both ends of the second cantilever portion 5231 are fixedly connected to the second main body portion 522 and the second engaging portion 5232, respectively, and the second cantilever portion 5231 is elongated, so that the second cantilever portion 5231 can be elastically deformed to a certain extent. When the second nozzle 5 is to be assembled on the spray arm body 1, the fastening structure is aligned to the insertion hole 121 on the wall 12, and then the second nozzle 5 is pressed downwards, the fastening structure is deformed and fastened into the insertion hole 121, and the second nozzle 5 is fixed on the spray arm body 1 under the limiting action of the plate-shaped third limiting part 521 and the fastening structure. When the second spray head 5 needs to be disassembled, the second spray head 5 is pulled outwards only by force, and the buckling structure is deformed to be separated from the inserting hole 121 due to the stress effect, so that the operation is convenient and quick. As shown in fig. 11, the maximum distance between the second locking portion 5232 and the second cantilever portion 5231 is 2mm to 100mm, so that the second locking portion 5232 can be easily removed from the insertion hole 121 when the operator pulls the second nozzle 5 outward with a small force. Preferably, the maximum distance is preferably 40mm to 50mm, so that the second engagement portion 5232 can be firmly engaged with the wall 12, and the operator can easily separate the second nozzle 5 from the wall 12.

Of course, in other embodiments, only the third limiting portion 521 may be provided as a snap-fit structure, and the third limiting portion 521 and the fourth limiting portion 523 may be provided as snap-fit structures at the same time.

As shown in fig. 11, the fastening structures are preferably arranged in three groups, and the three groups of fastening structures are distributed along the circumferential direction of the second body 522, so that all positions of the second body 522 in the circumferential direction can be stably abutted against the wall 12. Specifically, three buckle structures are arranged at equal intervals along the circumference of the second main body 522, so that the stress of each buckle structure is uniform, the buckle structures are prevented from being damaged, the service life of each buckle structure is prolonged, the replacement of the second spray head 5 by a user is reduced, and the consumable loss of the dish washer 100 is reduced. In other embodiments, the number of snap features may be two, four or more, and the number of snap features may be selected according to the size of the second nozzle 5.

Specifically, the buckle structure can be made of materials capable of generating elastic deformation such as resin, plastic and rubber, the elastic deformation capability of the buckle structure after being stressed can be further improved, and all materials capable of generating elastic deformation are within the protection scope of the present disclosure.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a spray arm, includes spray arm body (1) and first shower nozzle (2), spray arm body (1) have spray arm cavity (11), first shower nozzle (2) set up on wall (12) of spray arm body (1), a serial communication port, water outlet through-hole (21) and drive through-hole (2221) have been seted up on first shower nozzle (2), water outlet through-hole (21) with spray arm cavity (11) are linked together, water outlet through-hole (21)'s central line with wall (12) are the contained angle setting, drive through-hole (2221) by the inner wall of water outlet through-hole (21) is towards deviating from the direction extension of water outlet through-hole (21), follow drive through-hole (2221) spun fluid can drive first shower nozzle (2) are relative spray arm body (1) rotates.

2. The spray arm according to claim 1, characterized in that the drive through hole (2221) is arranged eccentrically to the centre line; and/or

The extending direction of the driving through hole (2221) is parallel to the wall surface (12); and/or

The ratio of the diameter of the drive through hole (2221) to the diameter of the water outlet through hole (21) is 0.5-1.

3. Spray arm according to any one of claims 1-2, characterized in that the wall surface (12) is provided with a plug hole (121), one of the side wall of the plug hole (121) and the first spray head (2) comprises a plug groove (224), and at least part of the other of the two is plugged into the plug groove (224).

4. A spray arm according to claim 3, wherein the first spray head (2) comprises a first limiting part (221), a main body part (222) and a second limiting part (223), the first limiting part (221) and the second limiting part (223) are arranged on the main body part (222) at intervals along a preset direction, the first limiting part (221), the main body part (222) and the second limiting part (223) jointly form the inserting groove (224), and the wall surface (12) is inserted into the inserting groove (224).

5. The spray arm according to claim 4, wherein the second limiting portion (223) includes a cantilever portion (2231) and a clamping portion (2232), and two ends of the cantilever portion (2231) are fixedly connected with the main body portion (222) and the clamping portion (2232), respectively.

6. The spray arm according to claim 5, wherein the clamping portion (2232) includes a trigger surface (22321), and when the first spray head (2) is pressed against the insertion hole (121), an opening edge of the insertion hole (121) abuts against the trigger surface (22321) to bend the cantilever portion (2231) toward a center line direction of the insertion hole (121), and the clamping portion (2232) enters the spray arm cavity (11) through the insertion hole (121); and/or

The number of the second limiting parts (223) is at least two, and the at least two second limiting parts (223) are arranged at intervals along the circumferential direction of the main body part (222).

7. Spray arm according to any of claims 1-2, characterized in that the spray arm further comprises a second spray head (5), one of the spray arm body (1) and the second spray head (5) comprises a first stop (13), the other one of the two comprises a second stop (53), the first stop (13) cooperates with the second stop (53) to limit the relative position of the spray arm body (1) and the spray head (2).

8. Spray arm according to any of claims 1-2, characterized in that the spray arm body (1) is detachably connected to the first spray head (2).

9. Spray arm according to any of claims 1-2, characterized in that the first spray head (2) is an elastic member, and the pore size of the water outlet through hole (21) is varied with the variation of the water flow pressure in the spray arm cavity (11).

10. A dishwasher, comprising a spray arm according to any one of claims 1 to 9.