CN109700406B

CN109700406B - Spray arm assembly and washing equipment

Info

Publication number: CN109700406B
Application number: CN201910154106.XA
Authority: CN
Inventors: 金亨俊
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2021-09-14
Anticipated expiration: 2039-02-28
Also published as: CN109700406A

Abstract

The invention discloses a spray arm assembly and washing equipment, wherein the spray arm assembly is used for cleaning the equipment, the cleaning equipment comprises a water supply joint, and the spray arm assembly comprises: the spray arm is provided with a water inlet joint and a water spray cavity, and the water inlet joint is communicated with the water spray cavity; the water supply part is provided with a water inlet end communicated with a water outlet of the water supply connector, a water outlet end communicated with the water inlet connector, and a supporting flange is arranged on the outer side wall of the water supply part; the sealing member, the sealing member includes fixed part and sealing, the fixed part with spray arm fixed connection, the sealing with the support flange laminating is sealed, with sealed the water supply spare with be connected between the spray arm. The technical scheme of the invention is beneficial to improving the sealing performance of the water inlet position of the spray arm.

Description

Spray arm assembly and washing equipment

Technical Field

The invention relates to the technical field of washing, in particular to a spray arm assembly and washing equipment.

Background

Along with the improvement of living standard of people, the dish washing machine gradually enters the life of people, and people also put forward higher requirements on the washing effect of the dish washing machine. The in-process that supplies water for the spray arm of current dish washer, rivers spill over from the water inlet of spray arm easily for water pressure and the water yield in the spray arm all receive the influence, are unfavorable for the work of spray arm efficient.

Disclosure of Invention

The invention mainly aims to provide a spray arm assembly, aiming at improving the sealing performance of a water inlet position of a spray arm so as to improve the cleaning efficiency of the spray arm.

In order to achieve the above object, the present invention provides a spray arm assembly for a cleaning apparatus including a water supply connector, comprising:

the spray arm is provided with a water inlet joint and a water spray cavity, and the water inlet joint is communicated with the water spray cavity;

the water supply part is provided with a water inlet end communicated with a water outlet of the water supply connector, a water outlet end communicated with the water inlet connector, and a supporting flange is arranged on the outer side wall of the water supply part;

the sealing member, the sealing member includes fixed part and sealing, the fixed part with spray arm fixed connection, the sealing with the support flange laminating is sealed, with sealed the water supply spare with be connected between the spray arm.

Optionally, the water inlet joint is provided with a mounting cavity, and the water supply piece is mounted in the mounting cavity; the fixing part is provided with a clamping groove, and one end of the water inlet joint, which is far away from the water spraying cavity, is clamped in the clamping groove;

the clamping groove is annularly arranged, the fixing part comprises an inner side groove wall located on the inner side of the ring and an outer side groove wall located on the outer side of the ring, and the inner side groove wall is abutted to one side, deviating from the water outlet end, of the supporting flange.

Optionally, the spray arm subassembly still includes sealed the pad, sealed pad is the annular setting, sealed pad cover is located the periphery wall that supplies water to connect, sealed pad is located inboard cell wall with support between the flange.

Optionally, a plurality of protrusions protruding into the ring are arranged on the side wall of the inner ring of the sealing gasket, and the plurality of protrusions are arranged at intervals along the inner side of the sealing gasket.

Optionally, a rotating gap is formed between the inner groove wall and the outer side wall of the water supply part.

Optionally, a plurality of flanges extend into the inward ring of the inner slot wall, and the plurality of flanges are arranged at intervals along the circumferential direction of the inner slot wall.

Optionally, the one end that water spray chamber was kept away from to water supply connector is the setting of step mouth, and the week side wall card of step mouth is located in the draw-in groove, the support flange is located in the step mouth.

Optionally, a gap is provided between the step of the step opening and the support flange.

Optionally, the water supply part is provided with a water passing channel communicated with the water inlet end, the water supply part further comprises a partition plate, the partition plate partitions the water passing channel into an upper water supply cavity and a lower water supply cavity which are distributed along the length direction of the water supply part, and the partition plate is provided with water passing holes communicated with the upper water supply cavity and the lower water supply cavity;

one side of the partition plate facing the lower water supply cavity is provided with a first sealing structure, one end of the water inlet joint close to the spray arm is provided with a second sealing structure, and the first sealing structure and the second sealing structure are matched and sealed.

Optionally, the first sealing structure includes a first sealing groove, the second sealing structure includes a second sealing groove opened toward the partition plate, and the first sealing groove and the second sealing groove are sealed in a snap-fit manner.

Optionally, the spray arm has a first spray chamber and a second spray chamber, the first spray chamber and the second spray chamber are independent from each other;

the water outlet end of the water supply piece is provided with a first water outlet and a second water outlet which are communicated with the water passing channel; the first water outlet is communicated with the first water spraying cavity, and the second water outlet is communicated with the second water spraying cavity.

Optionally, a third sealing groove is formed on one side of the water supply joint facing the water supply member, and a side wall of the water inlet end is arranged in the third sealing groove.

Optionally, the third sealing groove is annularly disposed, and an outer groove wall of the third sealing groove abuts against one side of the support flange close to the water inlet end.

Optionally, the sealing element comprises a sealing ring which is annularly arranged, and the sealing ring is sleeved at one end of the water inlet joint, which is far away from the spray arm; the seal also includes a handle extending outwardly from the seal ring.

The invention also proposes a washing apparatus comprising a spray arm assembly, said spray arm assembly comprising:

In the technical scheme of the invention, the fixing part of the sealing element is fixedly connected with the water inlet joint of the spray arm, and the sealing part of the sealing element is attached to one side of the supporting flange, which is far away from the water outlet end of the water supply element, so that water flow is prevented from flowing out from the water outlet end of the water supply element through a gap between the water supply element and the side wall of the water inlet joint.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a spray arm assembly according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic structural view of another embodiment of a spray arm assembly of the present invention;

FIG. 5 is a schematic cross-sectional view taken at N-N in FIG. 4;

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

FIG. 7 is a schematic diagram of the exploded structure of FIG. 5;

fig. 8 is a partial enlarged view of fig. 7 at B.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are 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. Also, the meaning of "and/or" appearing throughout is to include three versions, exemplified by "A and/or B" including either version A, or version B, or versions in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention mainly provides a spray arm assembly which is mainly applied to washing equipment so as to increase the utilization efficiency of detergents (washing liquid, washing air flow and the like). The washing apparatus refers to an apparatus such as a dishwasher for washing an object to be washed by spraying detergent.

The specific structure of the spray arm assembly will be mainly described below.

Referring to fig. 1 to 6, in an embodiment of the present invention, the spray arm assembly includes:

a spray arm 500, wherein the spray arm 500 has a first spray chamber 540 and a second spray chamber 550, and the first spray chamber 540 and the second spray chamber 550 are independent from each other;

a water supply member 700, the water supply member 700 having a water inlet end 750, a water passage communicating with the water inlet end 750, and a first water outlet 720 and a second water outlet 730 communicating with the water passage;

the water inlet end 750 is communicated with a water supply source;

the first water outlet 720 is communicated with the first water spraying cavity 540, the second water outlet 730 is communicated with the second water spraying cavity 550, a water baffle 731 is arranged in the second water outlet 730 to form a water passing region 732 and a water blocking region 733, the water supply member 700 is rotatably connected with the spray arm 500, so that the water supply member 700 supplies water to the second water spraying cavity 550 under the condition that the water passing region 732 is communicated with the second water spraying cavity 550, and the water supply member 700 does not supply water to the second water spraying cavity 550 under the condition that the water blocking region 733 corresponds to the second water spraying cavity 550.

Specifically, in the embodiment, the overall shape of the nozzle arm 500 is elongated, and the nozzle arm 500 rotates during operation, and the rotation axis is perpendicular to the length direction of the nozzle arm 500 and is located at the middle or the end of the nozzle arm 500. The rotation axis of the spray arm 500 is provided at the middle of the spray arm 500 as an example.

The first water spraying chamber 540 and the second water spraying chamber 550 are formed inside the spray arm 500, may be formed on the same spray arm 500, or may be formed on two spray arms 500 independent from each other, and in case of being formed on different spray arms 500, the rotation between different spray arms 500 is related to each other, so as to satisfy that the second water spraying chamber 550 performs the spray cleaning only when the spray arm 500 rotates to a specific angle. The arrangement of the first water spraying chamber 540 and the second water spraying chamber 550 is many, and the second water spraying chamber 550 may be disposed at one side (upper side, lower side, front side, rear side) of the first water spraying chamber 540; may also be disposed inside the first water spraying chamber 540; it may also be partially located at one side of the first spray chamber 540 and partially located inside the first spray chamber 540. The first water spraying chamber 540 may spray and clean at any working angle, or spray and clean only at a partial angle, and the second water spraying chamber 550 spray and clean only at a partial working angle. Therefore, the second water spray chamber 550 is located at one end of the spray arm 500 or at the middle portion of the spray arm 500, and the second water spray chamber 550 is formed at one end of the rotation axis as a boundary position, and the second water spray chamber 550 is formed in the entire spray arm 500, for example.

The water supply member 700 is cylindrical, the water inlet end 750 is provided with a water inlet which is communicated with a water source, and the water source enters the water supply member 700 through the water inlet end 750. The water channel extends from the water inlet end 750 along the length direction of the water supply member 700, and one end of the water supply member 700 far away from the water inlet end 750 can be plugged or opened. The first water outlet 720 is arranged on the side wall of the water supply member 700 close to the water inlet end 750; the second water outlet 730 is provided on a sidewall of the water supplying member 700 far from the water inlet end 750, or on an end portion of the water supplying member 700 far from the water inlet end 750.

The first water outlets 720 are communicated with the first water spraying cavities 540, the first water outlets 720 are distributed along the circumferential direction of the water supply member 700, and the peripheries of the first water outlets 720 are uniformly communicated with the first water spraying cavities 540, so that water flow can enter the first water spraying cavities 540 from the first water outlets 720 to the whole surface.

The second water outlet 730 is communicated with the second water spraying cavity 550, the opening range of the second water outlet 730 is not limited, and the second water outlet 730 is provided with a water passing area 732 allowing water to pass through and a water blocking area 733 not allowing water to pass through by the arrangement of the water blocking plate 731, and the water passing area 732 and the water blocking area 733 are distributed along the circumferential direction of the water supply member 700. The second water outlet 730 is communicated with one end of the second water spraying cavity 550, and with the rotation of the spraying arm 500, under the condition that the water passing area 732 is communicated with the second water spraying cavity 550, the water supply member 700 supplies water to the second water spraying cavity 550, and the second water spraying cavity 550 is sprayed and cleaned; when the water blocking region 733 corresponds to the position of the second spray chamber 550, the water supply member 700 does not supply water to the second spray chamber 550, and the second spray chamber 550 does not perform spray cleaning.

In this embodiment, by providing the first water spraying chamber 540 and the second water spraying chamber 550 which are independent from each other in the spraying arm 500, providing the first water outlet 720 and the second water outlet 730 which are independent from each other in the water supply member 700, the first water outlet 720 supplies water to the first water spraying chamber 540, the second water outlet 730 supplies water to the second water spraying chamber 550, and providing the water baffle 731 in the second water outlet 730, the second water outlet 730 has the water passing area 732 which allows water to enter the second water spraying chamber 550 and the water baffle 733 which blocks water from entering the second water spraying chamber 550; in the process that the spray arm 500 rotates relative to the water supply member 700, when the spray arm 500 rotates to a preset position where the second water spraying chamber 550 is needed for spray cleaning, the water passing area 732 corresponds to the second water spraying chamber 550, so that the water in the water supply member 700 enters the second water spraying chamber 550; when the spray arm 500 rotates to a position where the second water spraying cavity 550 is not needed for spraying cleaning, the water blocking area 733 corresponds to the second water spraying cavity 550 to block the water flow in the water supply member 700 from entering the second water spraying cavity 550, so that the second water spraying cavity 550 is cleaned by spraying water only at the position where the water supply member 700 is needed, the water flow is fully and reasonably utilized, the utilization rate of the detergent is greatly improved, and the purpose of saving the washing cost is achieved.

Referring to fig. 1 to 8, there may be many relative positions of the first water spray chamber 540 and the second water spray chamber 550, which will be described below:

the second watering chamber 550 is formed in the first watering chamber 540, or the second watering chamber 550 and the first watering chamber 540 are formed in parallel on one side of the first watering chamber 540.

The second spray chamber 550 may be formed in the first spray chamber 540 in a number of ways, such as by providing a spacer within the first spray chamber 540 to separate the second spray chamber 550 from the first spray chamber 540; a housing having a second spray chamber 550 may also be provided in the first spray chamber 540. Through setting up second water spray chamber 550 in first water spray chamber 540, spray arm 500 need not additionally for second water spray chamber 550 increase space for under the condition that does not increase the whole volume of spray arm 500, realize additionally washing the key regional of wasing, abundant utilization the space, improved the compactedness of space utilization and structure.

The second spray chamber 550 is formed at one side of the first spray chamber 540 in various forms, for example, the second spray chamber 550 and the first spray chamber 540 are formed in the same housing, and the second spray chamber 550 and the first spray chamber 540 are formed in different housings. When formed in the same housing, the first spray chamber 540 and the second spray chamber 550 are disposed adjacent to each other and separated by a partition 740. When formed in different housings, the spray arm 500 includes a first sub-spray arm 500 and a second sub-spray arm 500, the first spray chamber 540 is formed in the first spray arm 500, and the second spray chamber 550 is formed in the second spray arm 500. At this time, the relationship between the first and second

water spraying chambers

540 and 550 depends on the positional relationship between the first and

second spray arms

500 and 500, and the relative positional relationship between the first and

second spray arms

500 and 500 may be directly connected in parallel or may be arranged at intervals and connected by the water supply member 700. Through forming the second water spray cavity 550 in one side of the first water spray cavity 540, the space of the first water spray cavity 540 and the space of the second water spray cavity 550 can be ensured, thereby ensuring that sufficient detergent is supplied for use, and ensuring the spray washing effect of the first water spray cavity 540 and the second water spray cavity 550.

In some embodiments, to ensure the spray effect of the first spray chamber 540 and the second spray chamber 550 while saving space. The second water spraying chamber 550 includes a first water spraying sub-chamber and a second water spraying sub-chamber which are communicated with each other; the first sub-sprinkling cavities are formed at one side of the first sprinkling cavity 540 in a protruding manner, and the second sub-sprinkling cavities are formed in the first sprinkling cavity 540. That is, the second water spraying cavity 550 includes two parts, namely a first water spraying sub-cavity formed at one side of the first water spraying cavity 540 and a second water spraying sub-cavity formed inside the first water spraying cavity 540, so that the space is fully and reasonably utilized while the cleaning effect of the second water spraying cavity 550 is ensured; in addition, the second sub-water spraying cavity is arranged in the first water spraying cavity 540, so that the volume of the spray arm 500 protruding out of the first water spraying cavity 540 is reduced, the unbalance factors at two ends of the spray arm 500 are reduced, and the spray arm 500 is more stable in the rotating process.

The specific structure of the spray arm 500 may be many, and the inventive concept of the present application will be described below by way of a specific example:

in this embodiment, the spray arm 500 includes an upper cover 520 and a base 530, a partition is disposed on the upper cover 520 and/or the base 530, and the upper cover 520, the base 530 and the partition enclose a first spray chamber 540 and a second spray chamber 550 which are isolated from each other. In general, the upper cover 520 and the base 530 are fixedly connected to form a chamber, and the partition is disposed in the chamber and divides the chamber into two independent chambers (the first water spraying chamber 540 and the second water spraying chamber 550). The manner of achieving this effect may be many, and reference may be made to the specific description of the above embodiments with respect to the possible relative positional relationship of the first water spray cavity 540 and the second water spray cavity 550.

The form of the upper cover 520 may be various, for example, the upper cover 520 may be a plate shape, or may be an "upper case" having a concave space, and the base 530 has a water spraying space. The upper cover 520 and the base 530 are both arranged in a long strip shape, and the length of the upper cover and the length of the base are equivalent. The connection between the upper cover 520 and the base 530 can be achieved by various methods, such as screw connection, snap connection, etc.

The partition may be disposed on a side of the upper cover 520 facing the base 530, on a side of the base 530 facing the upper cover 520, or on both the upper cover 520 and the base 530. Take the case of being disposed on both the upper cover 520 and the base 530:

at least two parallel isolation ribs 521 are arranged on one side, facing the base 530, of the upper cover 520, a water spraying groove 531 is formed on the base 530, and the isolation ribs 521 are abutted against the groove wall of the water spraying groove 531, so that the isolation ribs 521 and the groove wall of the water spraying groove 531 enclose to form a second water spraying cavity 550. In this embodiment, the adjacent isolation ribs 521 surround to form a part of the second water spraying cavities 550 (the isolation ribs 521 surround to form a part of the first water spraying cavities 540 with the side walls of the upper cover 520 and the side walls of the base 530), the water spraying grooves 531 are part of the second water spraying cavities 550, and when the upper cover 520 and the base 530 are matched, the two part of the second water spraying cavities 550 are combined. In order to improve the space utilization, reduce the volume of the spray arm 500 and improve the operation stability of the spray arm 500, the bottom of the water spraying groove 531 protrudes out of the bottom of the base 530, so that the thickness of the base 530 provided with the water spraying groove 531 is greater than that of the base 530 without the water spraying groove 531. The rotation center axis of the spray arm 500 is located at the middle of the spray arm 500, the second spray chamber 550 is formed at one end of the spray arm 500, and the first spray chamber 540 is formed on the entire spray arm 500.

Based on the structure of the spray arm 500, the spray arm 500 can spray the cleaning solution at a plurality of positions, such as two ends of the spray arm 500, the top and the bottom of the spray arm 500, etc., as will be described in detail below. A plurality of first spray heads 522 are arranged on one side of the upper cover 520, which is opposite to the isolation rib 521, the first spray heads 522 are communicated with the first water spraying cavities 540, and the plurality of first spray heads 522 are distributed between the isolation rib 521 and the side edge of the upper cover 520; a plurality of second spray heads 532 are disposed on a side of the base 530 opposite to the upper cover 520, and the second spray heads 532 are communicated with the second water spraying chamber 550. The first nozzles 522 arranged on the upper cover 520 are arranged on two sides of the isolation rib 521 in a staggered manner and extend along the length direction of the upper cover 520; the first nozzle 522, which is disposed at an end of the upper cover 520 where the isolation rib 521 is not disposed, may be disposed at any position of the upper cover 520 as required. In some embodiments, the first nozzle 522 may be disposed on the base 530 without the water spraying groove 531 and still communicate with the first water spraying chamber 540. The second nozzle 532 is disposed on the base 530 corresponding to the water spraying groove 531, and the second nozzle 532 is connected to the water spraying groove 531, however, in some embodiments, the second nozzle 532 may be disposed on the upper cover 520 corresponding to the second water spraying cavity 550. Through the arrangement of the first spray head 522 and the second spray head 532, the spray arm 500 can spray all areas through the first spray head 522 and can selectively spray specific areas through the second spray head 532, which is beneficial to improving the washing efficiency and the water utilization rate of the spray arm 500.

In some embodiments, in order to improve the space utilization of the spray arm 500 and reduce the volume of the spray arm 500, the bottom of the base 530 is recessed outward to form the bottom wall of the water spray groove 531. The bottom of spout 531 is sunken outwards from spout 531, it appears from the outside that the bottom protrusion of spout 531 does not set up the position of spout 531 in base 530, with the effectual space that increases spout 531, thereby the space of second water spray chamber 550 has been increased, make the part of second water spray chamber 550 inlay in first water spray chamber 540, another part protrusion in first water spray chamber 540, when guaranteeing that second water spray chamber 550 has sufficient water spray space, make full use of the space, the volume of spray arm 500 has been reduced, and simultaneously, be favorable to reducing the shape and the volume difference at spray arm 500 both ends, be favorable to guaranteeing the stationarity of spray arm 500 in the course of the work.

In order to improve the operation stability of the spray arm 500, the distance between the bottom wall of the water spraying groove 531 and the top of the upper cap 520 is gradually decreased from the middle of the spray arm 500 to one end of the spray arm 500. Specifically, the distance gradually decreases from the rotational axis of the spray arm 500 to one end of the spray arm 500. The greater the distance between the bottom wall of spout 531 and the top of cover 520, the more spout 531 protrudes from base 530, and the smaller the distance between the bottom wall of spout 531 and the top of cover 520, the less spout 531 protrudes from base 530. Near the middle of the spray arm 500, i.e. near the axis of rotation of the spray arm 500, the closer to the axis of rotation the moment is experienced by the spray arm 500 and the water flow therein, the heavier the middle is for the stability of the spray arm 500. In this way, the distance between the bottom wall of the water spraying groove 531 and the top of the upper cover 520 is set to be gradually reduced from the rotation axis of the spray arm 500 to one end thereof, so that the stability of the spray arm 500 in the rotation process is advantageously ensured while ensuring that the second water spraying chamber 550 has a sufficient space.

Regarding the specific installation of the water supply member 700, the middle part of the spray arm 500 is provided with an installation cavity 515, the water supply member 700 is installed in the installation cavity 515, one end of the installation cavity 515 is provided with a first water spray cavity 540, and the other end is provided with a first water spray cavity 540 and a second water spray cavity 550. Mounting cavity 515 may be formed directly on spray arm 500; the water inlet joint 510 may be formed on the spray arm 500, and the mounting cavity 515 may be formed on the water inlet joint 510, and in some embodiments, the water inlet joint 510 may be integrally formed with the spray arm 500. So configured, the installation cavity 515 communicates with the middle of the first water spray cavity 540 and communicates with one end of the second water spray cavity 550. Regarding the specific communication mode:

the installation cavity 515 comprises an upper water inlet section 513 and a lower water inlet section 514, the upper water inlet section 513 is communicated with the first water spraying cavity 540, and the lower water inlet section 514 is communicated with the second water spraying cavity 550; the first water outlet 720 is located at the upper part of the installation cavity 515 and is communicated with the first water spraying cavities 540 at both ends of the spray arm 500; the second water gap is located at the lower part of the installation cavity 515 and is arranged corresponding to the second water spraying cavity 550. The first water outlet 720 corresponds to the upper water inlet section 513, and the two sides or the periphery of the upper water inlet section 513 are uniformly communicated with the first water spraying cavities 540; the second water outlet 730 corresponds to the lower water inlet section 514, and only a portion of the lower water inlet section 514 is communicated with the second water spraying chamber 550. When the water supply member 700 rotates to a predetermined angle relative to the installation cavity 515, the water passing area 732 of the second water outlet 730 corresponds to the sidewall of the installation cavity 515 (the lower water inlet section 514), and the water blocking area 733 is located at the opening of the lower water inlet section 514, so that the washing liquid cannot enter the second water spraying cavity 550 from the water passing channel.

In some embodiments, to improve the sealing between the water supply member 700 and the mounting cavity 515 of the spray arm 500, water is prevented from flowing into the first spray chamber 540 or the second spray chamber 550 from a gap between the water supply member 700 and the side wall of the mounting cavity 515.

The water supply member 700 further comprises a partition 740, the partition 740 partitions the water passing channel into an upper water supply cavity and a lower water supply cavity which are arranged along the length direction of the water supply member 700, and the partition 740 is provided with water passing holes which are communicated with the upper water supply cavity and the lower water supply cavity; the baffle 740 is provided with a first sealing structure facing one side of the lower water supply cavity, the side wall of the installation cavity 515 is provided with a second sealing structure, and the first sealing structure and the second sealing structure are matched and sealed. In this embodiment, the radial dimension of the upper water supply chamber is larger than that of the lower water supply chamber, and the partition 740 is the bottom of the upper water supply chamber and only partially serves as the top of the lower water supply chamber. The lower water supply cavity is arranged corresponding to the middle part of the partition 740, and the water passing hole is positioned in the middle of the partition 740. The first sealing structure and the second sealing structure can be in various forms, can be formed by self structures, and can also be additionally provided with structures, such as a sealing ring, a sealing groove, a sealing rib and the like. In order to further sufficiently ensure the sealing effect, the first sealing structure includes a first sealing groove 741, the second sealing structure includes a second sealing groove 511 opened to face the partition 740, and the first sealing groove 741 and the second sealing groove 511 are engaged and sealed. A first sealing groove 741 is formed in a side of the partition 740 facing the lower water supply chamber, and a second sealing groove 511 is formed in a sidewall of the mounting chamber 515. The radial dimension of the upper water inlet section 513 is larger than that of the lower water inlet section 514, a step is formed between the upper water inlet section 513 and the lower water inlet section 514, and the second sealing groove 511 is formed in the step. The water supply member 700 is mounted in the mounting chamber 515 such that the outer wall of the first seal groove 741 is engaged with the second seal groove 511, and the inner wall of the second seal groove 511 is engaged with the first seal groove 741.

In some embodiments, the spray arm assembly includes a water supply pipe 100 and a water supply joint 200 in communication with the water supply pipe 100, the water supply pipe 100 being in communication with a water source; the outer side wall of the water supply member 700 is provided with a fastening button configured to be fixedly connected with the external water supply connector 200. In the working process, the water supply pipe 100 and the water supply connector 200 are fixedly connected and kept still, the water supply member 700 and the water supply connector 200 are also fixedly connected differently, the mounting cavity 515 of the spray arm 500 is sleeved on the water supply member 700, and meanwhile, the spray arm 500 is rotatably connected with the water supply member 700 under the action of water flow or an acquisition device.

It should be noted that in some embodiments, in order to improve the sealing performance of the water inlet position of the spray arm 500, special sealing structures are specially provided, and the sealing structures do not depend on the number of the water spraying cavities of the spray arm 500. The relative movement of the spray arm 500 with respect to the water inlet joint 510 and the water supply member 700 during operation will be described with reference to the above embodiments, and a specific sealing structure will be described below.

The spray arm assembly is generally used for a cleaning apparatus including a water supply joint 200, and includes:

the spray arm 500 is provided with a water inlet joint 510 and a water spraying cavity, wherein the water inlet joint 510 is communicated with the water spraying cavity; the water supply part 700, the water inlet end 750 of the water supply part 700 is communicated with the water outlet of the water supply joint 200, the water outlet end 760 is communicated with the water inlet joint 510, the water supply part 700 is fixedly connected with the water supply joint 200, and the outer side wall of the water supply part 700 is provided with a support flange 710; the sealing member 300 includes a fixing portion and a sealing portion, the fixing portion is fixedly connected to the spray arm 500, and the sealing portion is attached to the support flange 710 for sealing the connection between the water supply member 700 and the spray arm 500.

Specifically, in this embodiment, the water spraying cavity may be one water spraying cavity, or may be a plurality of sub water spraying cavities isolated from each other. To illustrate with two spray chambers, the spray arm 500 has a first spray chamber 540 and a second spray chamber 550, the first spray chamber 540 and the second spray chamber 550 being independent from each other; the water outlet end 760 of the water supply member 700 is provided with a first water outlet 720 and a second water outlet 730 which are communicated with the water passing channel; the first water outlet 720 is communicated with the first water spraying chamber 540, and the second water outlet 730 is communicated with the second water spraying chamber 550. Water at a water source enters the water supply member 700 through the water supply joint 200, enters the water inlet joint 510 through the water passing channel of the water supply member 700, and enters the water spraying cavity. The fixing portion of the sealing member 300 is fixedly connected to the water inlet connector 510 of the spray arm 500, and the sealing portion thereof is attached to the side of the supporting flange 710 away from the water outlet 760 of the water supply member 700, so as to prevent water from flowing out from the water outlet 760 of the water supply member 700 through the gap between the water supply member 700 and the sidewall of the water inlet connector 510.

It should be noted that the sealing member 300 may have many forms as long as the sealing portion thereof abuts against the top of the support flange 710 to prevent water from flowing out of the gap between the water supply member 700 and the water inlet joint 510. In order to improve the sealing effect, the sealing member 300 is provided in a ring shape around the water supply member 700 and the water inlet joint 510. The seal in this embodiment is a rotary seal, i.e., the seal 300 and the spray arm 500 need to both rotate relative to the water supply 700 and seal between the spray arm 500 (water inlet joint 510) and the water supply 700. The rotational connection of the spray arm 500 with respect to the water supply member 700 is accomplished by mounting the water supply member 700 within the water inlet fitting 510, and the sealing portion of the sealing member 300 is fitted to the side of the support flange 710 remote from the water outlet end 760 to effect a seal. As for how the spray arm 500 maintains the relative position relationship with the water supply member 700, the implementation manner may be many, and the implementation may be implemented by adding additional components, for example, the water supply member 700 and the water inlet joint 510 may be connected by a bearing, the bearing is sleeved on the outer side wall of the water supply member 700, the water inlet joint 510 is sleeved on the outer side of the bearing, and of course, other connection components may also be implemented; this can also be achieved by cooperation between the water supply member 700 and the water inlet fitting 510 and the seal member 300 itself, for example, the seal portion has a clamping groove in which the support flange 710 is clamped. Of course, in some embodiments, the spray arm 500 may be fixedly connected to the water supply 700.

Regarding the structure of the sealing member 300, as an example, the sealing member 300 includes a sealing ring 310 disposed in a ring shape, and the sealing ring 310 is sleeved on an end of the water inlet joint 510 away from the spray arm 500; the seal 300 also includes a handle 711, the handle 711 extending outwardly from the sealing ring 310. The handle 711 is provided flat and has a width dimension gradually increasing in the extending direction. The plurality of handles 711 are radially arranged along the circumferential direction of the seal ring 310. The clamping groove 330 is formed on the sealing ring 310, and the height of the inner groove wall 331 of the clamping groove 330 is smaller than the height of the outer groove wall 332 of the clamping groove 330, so that the clamping groove 330 can be stably matched with a water inlet, and meanwhile, the sealing element 300 is easily assembled and disassembled in matching with the water inlet joint 510. When the sealing portion needs to abut against the supporting flange 710, the handle 711 is pressed downwards, the sealing ring 310 enables the inner side groove wall 331 of the clamping groove 330 to expand outwards under the action of the handle 711, when the radial size of the inner ring of the sealing element 300 is larger than that of the supporting flange 710, the water supply element 700 is installed in the water inlet joint 510, then the handle 711 is loosened, the size of the inner ring of the sealing ring 310 is recovered to the original size under the action of elastic recovery force, and therefore the inner side wall of the clamping groove 330 abuts against the top of the supporting flange 710.

In this embodiment, the spray arm 500 is provided with the water inlet joint 510, and the water supply member 700 is installed in the water inlet joint 510, so as to communicate the water supply member 700 with the spray arm 500, and meanwhile, the connection between the water supply member 700 and the spray arm 500 can be a rotational connection or a fixed connection, and the specific connection relationship can be set as required; the sealing member 300 and the spray arm 500 are in the same moving state (relatively still) by fixedly connecting the fixing portion of the sealing member 300 with the water inlet joint 510; through the one side of keeping away from water outlet end 760 at support flange 710 with sealing part laminating butt, realized supplying water between 700 and the water supply joint 510 sealed in clearance, so, both realized spray arm 500 and supply water 700 stable connection, effectual improvement again the leakproofness of spray arm 500 department of intaking, avoided water pressure and rivers to reveal from spray arm 500's department of intaking to be favorable to improving spray arm 500's cleaning efficiency.

In order to ensure the sealing performance and stability of the connection between the sealing member 300 and the water inlet joint 510, the water inlet joint 510 is provided with a mounting cavity 515, and the water supply member 700 is mounted in the mounting cavity 515; the fixing part is provided with a clamping groove 330, and one end of the water inlet joint 510, which is far away from the water spraying cavity, is clamped in the clamping groove 330; the clamping groove 330 is annularly arranged, the fixing portion includes an inner groove wall located at the inner side of the ring and an outer groove wall located at the outer side of the ring, and the inner groove wall is abutted to one side of the support flange 710 departing from the water outlet end 760.

In this embodiment, the sealing member is fastened to the top of the water inlet joint 510, and the water inlet joint 510 is tightly fastened to the clamping groove 330, so that the sealing member 300 is fixedly connected to the water inlet joint 510, and the sealing member and the water inlet joint 510 are sealed, so that a book cannot overflow from the connection position of the sealing member 300 and the water inlet joint 510. The sealing portion in this embodiment includes an inner slot wall 331 of the slot 330, the bottom of which abuts the top of the support flange 710.

On the basis of the structure, the water outlet end 760 of the water supply member 700 is provided with a first sealing groove 741 and a second sealing groove 511 which are buckled with each other, so that the freedom degree of the downward movement of the water supply member 700 is limited; the water inlet end 750 of the water supply member 700 is fastened by the sealing member 300, and defines the freedom of the water supply member 700 to move upward, such that the water supply member 700 cannot move but rotates with respect to the water inlet joint 510. In this way, a stable and reliable double sealing engagement of the spray arm 500 with the water supply member 700 is achieved.

In some embodiments, the spray arm assembly further includes a sealing gasket 600, the sealing gasket 600 is disposed in an annular shape, the sealing gasket 600 is sleeved on the outer circumferential wall of the water supply connector 200, and the sealing gasket 600 is located between the inner groove wall and the supporting flange 710. The width of the gasket 600 is greater than the width of the inner groove wall, thus increasing the sealing area. The gasket 600 may be made of various materials, such as hydrophobic material and easy-to-clean material, for example, teflon, Polytetrafluoroethylene (PTFE), so as to greatly reduce friction. The friction between the sealing portion and the gasket 600 and the friction between the support flange 710 and the gasket 600 are much smaller than the friction between the sealing portion and the support flange 710. In this way, the sealing gasket 600 can not only increase the sealing performance, but also reduce the friction, so as to facilitate the rotation of the spray arm 500 relative to the water supply member 700, thereby improving the flexibility of the rotation of the spray arm 500. During the rotation of the spray arm 500, the gasket 600 may rotate with the spray arm 500, may be stationary with the water supply member 700, and may, of course, alternate between rotation and stationary.

In some embodiments, in order to reduce friction, a plurality of protrusions 610 protruding inward are disposed on the inner side wall of the gasket 600, and the plurality of protrusions 610 are spaced along the inner side of the gasket 600. By the provision of the protrusions 610, a contact area of the gasket 600 with the water supply member 700 is reduced, thereby reducing a frictional force between the gasket 600 and the water supply member 700.

In some embodiments, to further reduce friction and improve the rotational flexibility of the spray arm 500, a rotational gap is formed between the inner groove wall and the outer sidewall of the water supply member 700. By the provision of the rotation gap, the contact area of the sealing member 300 with the water supply member 700 during the rotation is reduced, facilitating the rotation of the spray arm 500 and the sealing member 300 with respect to the water supply member 700.

To improve the strength of the seal 300 and reduce friction under certain conditions, the inner groove wall extends a plurality of flanges 311 inward, and the plurality of flanges 311 are spaced circumferentially along the inner groove wall. Under some specific conditions, for example, the spray arm 500 may slightly shake due to uneven water entry, so that the rotation is reduced and reduced, or even becomes zero, and at this time, the contact area of the inner groove wall can be reduced by the arrangement of the flange 311, thereby reducing the friction force. At the same time, the load bearing capacity of the seal 300 is advantageously increased by the provision of the flange 311.

In some embodiments, in order to improve the compactness of the structure and the sealing performance between the water supply member 700 and the water inlet joint 510, one end of the water inlet joint 510 away from the water spraying cavity is provided with a step opening 512, the peripheral side wall of the step opening 512 is clamped in the clamping groove 330, and the supporting flange 710 is positioned in the step opening 512. The large-diameter end of the step port 512 is close to the water inlet end 750 of the water supply member 700, and the step port 512 provides a space for installing the inner side groove wall and the support flange 710 of the sealing member 300, and also reduces the distance between the outer side wall of the water supply member 700 close to the water outlet end 760 and the inner side wall of the water inlet joint 510, reduces the volume of the water inlet joint 510, improves the space utilization rate, and is beneficial to improving the sealing performance between the water supply member 700 and the inner side wall of the water inlet joint 510.

In some embodiments, to further improve the flexibility of the rotation of the spray arm 500 with respect to the water supply member 700, a gap is provided between the step of the step opening 512 and the support flange 710. The support flange 710 is positioned in the stepped opening 512, and a gap is formed between the bottom of the support flange 710 and the step of the stepped opening 512, so that the contact area between the water inlet joint 510 and the water supply member 700 is reduced, and when the spray arm 500 rotates, the friction force is reduced, which is beneficial to the flexible rotation of the spray arm 500.

In an embodiment, in order to improve the stability and sealing of the connection between the water supply member 700 and the water supply joint 200. A third sealing groove 210 is formed at one side of the water supply joint 200 facing the water supply member 700, and a sidewall of the water inlet end 750 is disposed in the third sealing groove 210. A bayonet is opened on the inner sidewall of the third sealing groove 210, a buckle is arranged on the outer sidewall of the water supply member 700, and the buckle is clamped in the bayonet to fixedly connect the water supply member 700 and the water supply connector 200. The third sealing groove 210 is annularly disposed, and an outer groove wall 211 of the third sealing groove 210 abuts against a side of the support flange 710 close to the water inlet end 750. The height of the inner groove wall 212 of the third seal groove 210 is greater than the height of the outer groove wall 211 of the third seal groove 210, so that water in the water supply joint 200 can smoothly enter the water passing channel of the water supply member 700, and meanwhile, the space is reasonably utilized, so that the structure is compact.

The invention further provides a washing device, which comprises an inner container and a spray arm assembly, wherein the specific structure of the spray arm assembly refers to the above embodiments, and the washing device adopts all technical solutions of all the above embodiments, so that the washing device at least has all beneficial effects brought by the technical solutions of the above embodiments, and further description is omitted. Wherein, the spray arm component is arranged in the washing cavity of the inner container.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A spray arm assembly for a cleaning apparatus, the cleaning apparatus including a water supply connection, comprising:

the sealing element comprises a fixing part and a sealing part, the fixing part is fixedly connected with the spray arm, and the sealing part is attached and sealed with the support flange so as to seal the connection between the water supply part and the spray arm;

the water inlet joint is provided with an installation cavity, and the water supply piece is installed in the installation cavity; the fixing part is provided with a clamping groove, and one end of the water inlet joint, which is far away from the water spraying cavity, is clamped in the clamping groove;

the clamping groove is annularly arranged, the fixing part comprises an inner side groove wall positioned on the inner side of the ring and an outer side groove wall positioned on the outer side of the ring, and the inner side groove wall is abutted to one side, away from the water outlet end, of the supporting flange;

the spray arm assembly further comprises a sealing gasket, the sealing gasket is annularly arranged, the sealing gasket is sleeved on the outer peripheral wall of the water supply connector, and the sealing gasket is located between the inner side groove wall and the supporting flange.

2. The spray arm assembly of claim 1 wherein said gasket has a plurality of protrusions projecting inwardly of said inner ring and spaced along an inner side of said gasket.

3. The spray arm assembly of claim 1 wherein there is a rotational clearance between the inner slot wall and the outer side wall of the water supply.

4. The spray arm assembly of claim 1 wherein the inner slot wall has a plurality of flanges extending inwardly therefrom, the plurality of flanges being spaced circumferentially about the inner slot wall.

5. The spray arm assembly of claim 1, wherein the end of the water inlet connector away from the water spray chamber is provided with a step opening, the peripheral side wall of the step opening is clamped in the clamping groove, and the support flange is positioned in the step opening.

6. The spray arm assembly of claim 5 wherein a gap is provided between the step of the stepped orifice and the support ledge.

7. The spray arm assembly of claim 1, wherein the water supply member has a water passage communicating with the water inlet end, the water supply member further comprising a partition plate dividing the water passage into an upper water supply chamber and a lower water supply chamber arranged along a length direction of the water supply member, the partition plate being provided with water through holes communicating the upper water supply chamber and the lower water supply chamber;

8. The spray arm assembly of claim 7, wherein the first seal structure comprises a first seal groove and the second seal structure comprises a second seal groove disposed toward the partition, the first seal groove and the second seal groove being snap-fit.

9. The spray arm assembly of claim 8, wherein said spray arm has a first spray chamber and a second spray chamber, said first spray chamber and said second spray chamber being independent of each other;

10. The spray arm assembly according to any one of claims 1 to 9, wherein a third sealing groove is formed in a side of the water supply joint facing the water supply member, and a sidewall of the water inlet end is disposed in the third sealing groove.

11. The spray arm assembly of claim 10 wherein the third seal groove is annular and an outer groove wall of the third seal groove abuts a side of the support flange adjacent the water inlet end.

12. The spray arm assembly of any one of claims 1 to 9, wherein the sealing element comprises a sealing ring arranged in an annular shape, and the sealing ring is sleeved on one end of the water inlet joint, which is far away from the spray arm; the seal also includes a handle extending outwardly from the seal ring.

13. A washing apparatus comprising a spray arm assembly according to any one of claims 1 to 12.