CN110693427A

CN110693427A - Spraying device of dish washing machine

Info

Publication number: CN110693427A
Application number: CN201810743843.9A
Authority: CN
Inventors: 苏晓慧; 徐伟; 杨林
Original assignee: Qingdao Haier Dishwasher Co Ltd
Current assignee: Qingdao Haier Dishwasher Co Ltd
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2020-01-17

Abstract

The invention discloses a spraying device of a dish washing machine, which comprises a spraying arm; the water inlet pipe is communicated with the spray arm and provides spray inlet water for the spray arm; the spray arm has a first housing and a second housing; the spraying chamber is formed by buckling the first shell and the second shell and is communicated with the water inlet pipe; the first shell and the second shell are in smooth transition connection; an adjusting component for maintaining the pressure value in the spraying cavity to change steadily at the initial stage of the washing liquid flowing into the spraying cavity; the flow guide structure plays a role in guiding and buffering the flow of the washing liquid in the spraying cavity. The invention provides a spraying device of a dish-washing machine, which ensures that air in a spraying arm is quickly discharged without resistance at the initial stage of water injection in the spraying arm; the spraying arm is provided with a butt joint rib which can be butted and closed, so that the residue of dirt such as food residues is prevented; the flow guide structure is arranged in the spray arm, so that the washing liquid can be well guided in the flow direction in the spray arm.

Description

Spraying device of dish washing machine

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a spraying device of a dish washing machine.

Background

With the improvement of living standard, the requirements of people on living quality are higher and higher, so that the requirements on the quality, the performance, the humanization of use, the intellectualization of operation and the like of living goods are higher and higher. The dish washing machine as a convenient living article also comes into the life of people. In a dishwasher, a sprayer is one of the key parts of the dishwasher, and directly influences whether tableware can be washed clean or not.

At present, the water jet component inside the dish washer mainly takes a spray arm structure as a main component inside the dish washer, and the spray arm is one of important components inside the dish washer and drives the spray arm to directionally rotate through water flow to spray water flow to wash dishes. At the beginning stage of injecting water into the spray arm by the dish-washing machine, because the spray arm is distributed with a plurality of small holes with different directions, the internal air can pass through the holes at high speed when being discharged, and larger air resistance is caused. A sensor for detecting the water injection amount can wrongly interpret the rotating power of the motor, and the air resistance is wrongly calculated as the injected water amount, so that the water injection amount is inconsistent with the actually required water injection amount; meanwhile, the upper part and the lower part of the common spray arm are connected through internal welding ribs, and the welded ribs are directly exposed in the cleaning water and are easily connected with dirt such as food residues or grease in the water in the use process. Because welding muscle surface unevenness, food waste etc. remain the accumulation on the muscle easily after long-time the use, cause and spray arm weight increase, effective water injection volume reduces, leads to spraying the arm energy consumption increase. Meanwhile, residues and the like easily fall under the action of water flow impact to block the spraying port, so that the cleaning effect is reduced, and poor user experience is caused. According to the invention, by increasing the rib position in the spray arm, accumulation of residue oil stains on the welding ribs can be effectively prevented, and the influence of the oil stains in water on the spray arm after long-time use can be maximally reduced.

Chinese patent application No. CN201320297385.3 discloses a spray arm device for a dishwasher and a dishwasher having the same, the spray arm device for the dishwasher includes: a water inlet pipe; the spray arm assembly is rotatably connected with the water inlet pipe and comprises a spray arm water pipe and a spray arm, wherein the first end of the spray arm water pipe extends into the water inlet pipe, and the second end of the spray arm water pipe is connected with the spray arm outside the water inlet pipe; and the rotating speed detection assembly comprises a magnetic part fixed on the spray arm water pipe, a magnetic sensitive switch fixed on the water inlet pipe and corresponding to the magnetic part, and a controller connected with the magnetic sensitive switch.

Chinese patent application No. CN201410218955.4 discloses a spray arm structure of a dish washer, which comprises a spray arm body, wherein the spray arm body is provided with a circular water inlet, the spray arm body is further provided with a drainage hole, a flow guide structure is arranged in the spray arm body, and the flow guide structure comprises two first lower flow guide surfaces, second lower flow guide surfaces, third lower flow guide surfaces and fourth lower flow guide surfaces which are in circular arc shapes; an upper flow guide arc surface is arranged in the spray arm body corresponding to the water inlet end; the ratio of the arc radius of the first lower flow guide surface or the arc radius of the second lower flow guide surface to the diameter of the water inlet is more than or equal to 0.3 and less than or equal to 0.6, the ratio of the arc radius of the third lower flow guide surface or the arc radius of the fourth lower flow guide surface to the diameter of the water inlet is more than or equal to 0.4 and less than or equal to 0.6, and the ratio of the arc radius of the upper flow guide arc surface to the diameter of the water inlet is more than or equal to 0.05 and less than or equal to 0.1.

Although the above-mentioned prior art obtains the accurate rotational speed of spray arm through magnetic-sensitive switch to a certain extent, and then avoid the production of error and guarantee the atmospheric pressure in the water route through set up exhaust structure in the water route, but all do not solve this application in the spray arm water injection, because the spray hole undersize on the spray arm, when leading to washing liquid to flow in the spray arm, the high speed of air in the spray arm leads to the fact inside air resistance to increase suddenly through the spray hole, and then leads to the sensor misjudgement motor's of measuring water injection rate rotation power, simultaneously, because the lower part of ordinary spray arm links to each other through inside weld muscle, in the use, easily with filths such as aquatic food residue or grease meet the department, the residue drops under the water impact easily, block up the mouth that sprays, reduce clean effect, cause bad user experience scheduling problem.

Therefore, there is a need to improve the defects and shortcomings of the prior art, and to provide a spraying device of a dish washing machine, which can ensure the air in a spraying arm to be discharged quickly without resistance at the initial stage of water injection in the spraying arm by using the principle of a one-way valve, eliminate the influence on a water injection sensor in the original spraying arm, and ensure the normal operation of the spraying arm by closing and sealing the one-way valve structure under the action of water pressure after the water level reaches a certain height; the abutting ribs capable of being abutted and closed are arranged on the spray arm, so that the strength of the spray arm is increased, and simultaneously, food residues and other dirt are prevented from contacting the uneven welding ribs on the surface to cause residue, and the abutting ribs are smooth in surface, so that the oil stains and the like can be effectively prevented from remaining on the surface of the abutting ribs to cause accumulation; set up the water conservancy diversion structure that can carry out the drainage to washing liquid in the spray arm, guarantee that washing liquid can obtain fine flow direction guide in the spray arm, also avoided the too fast influence of flowing of washing liquid to spray arm internal pressure simultaneously, influence the work of water sensor, and then influence the normal use of spray arm.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem underlying the present invention is to overcome the disadvantages of the prior art and to provide a dishwasher spray device which overcomes or at least partially solves the above mentioned problems.

In order to solve the technical problems, the invention adopts the technical scheme that: a spray device of a dishwasher comprises

A spray arm;

the water inlet pipe is communicated with the spray arm and provides spray inlet water for the spray arm;

the spray arm is provided with

The spraying chamber is communicated with the water inlet pipe;

an adjusting component for maintaining the pressure value in the spraying cavity to change steadily at the initial stage of the washing liquid flowing into the spraying cavity;

a first housing and a second housing forming a spray arm;

the spraying arm is clamped between the first shell and the second shell to form a connecting part with a smooth transition contact surface between the spraying arm and the washing liquid;

the flow guide structure plays a role in guiding and buffering the flow of the washing liquid in the spraying cavity.

Wherein, the

The adjusting assembly is configured to discharge the medium in the spraying cavity from the adjusting assembly by utilizing the acting force of the washing liquid entering the spraying cavity;

in one embodiment, the adjustment assembly is configured to stop the adjustment of the pressure value within the spray chamber when the washing liquid inside the spray chamber reaches a preset value or fills the entire spray chamber.

At the same time, the

The adjusting assembly comprises a first adjusting unit which is arranged on the inner wall of the spraying arm and is communicated with the inner space and the outer space of the spraying cavity;

in one embodiment, the first adjusting unit is arranged at the upper part of the spray arm and is in a normally open structure;

in one embodiment, the first adjusting unit is a through hole disposed at an upper portion of the spray arm.

Further, the

The adjusting assembly further comprises a second adjusting unit which is arranged on the inner wall of the spraying arm and can open or close the first adjusting unit under the action of the washing liquid in the spraying cavity, and the second adjusting unit can realize the function that the first adjusting unit is opened or closed along with the flowing of the washing liquid in the spraying cavity;

in one embodiment, the second adjusting unit is configured to gradually close the first adjusting unit according to a gradually increasing space occupied by the washing liquid in the spray chamber;

in one embodiment, the second adjusting unit can be turned downwards under the action of gravity, so that the first adjusting unit is in an open state;

in one embodiment, at least when the spraying chamber is filled with the washing liquid, the buoyancy of the washing liquid to the second adjusting unit is greater than the gravity of the second adjusting unit, which ensures that the adjusting assembly is closed and the pressure in the spraying chamber is no longer adjusted at least when the spraying chamber is filled with the washing liquid;

in one embodiment, the second adjusting unit can turn around a rotating unit according to the self gravity or the buoyancy of the washing liquid to the second adjusting unit, so that the second adjusting unit is opened or closed, and the rotating connection facilitates the realization of the function of the adjusting assembly;

in one embodiment, the rotating unit passes through a through hole arranged on the second adjusting unit, is connected with the inner wall of the spraying arm, and can generate a rotating structure under the driving of the second adjusting unit;

in one embodiment, the rotating unit is detachably connected with the inner wall of the spray arm;

in one embodiment, the connection between the rotating unit and the inner wall of the spray arm is in clamping connection.

Further, the above

The first shell and the second shell are formed by connecting parts which comprise at least an inner layer and an outer layer, the spraying arms are connected in a multi-layer mode, the strength of the spraying arms is improved, meanwhile, dirt such as food residues and the like is prevented from contacting uneven welding ribs on the surface to cause residue, the surfaces of the butt joint ribs are smooth, and oil stains and the like can be effectively prevented from remaining on the surfaces of the butt joint ribs to cause accumulation;

in one embodiment, the connection part includes a first connection unit constituting a part of an outer surface of the spray arm and a second connection unit constituting a part of an inner wall of the spray chamber.

Furthermore, at least the first connecting units are in smooth transition connection, and the smooth outer surface of the spray arm is provided, so that food residues and other dirt cannot be accumulated, scraped and attached to the surface of the spray arm during the rotation operation of the spray arm, and the normal work of the spray arm is prevented from being influenced;

in one embodiment, the second connecting unit forming a part of the inner wall of the spraying chamber is also connected in a smooth transition mode, the washing liquid flows more smoothly in the spraying chamber in the smooth transition mode, and the smooth arrangement reduces the flowing resistance of the washing liquid.

Further, the

The first connecting unit realizes the isolation and sealing of the inner space and the outer space of the spray arm under the extrusion of the first shell and the second shell, and the two independent connecting units are mutually matched to form a connecting part, so that the strength of the spray arm is increased, simultaneously, the residues caused by the fact that food residues and other dirt contact uneven welding ribs on the surface are prevented, the surface of the butt joint rib is smooth, and the accumulation caused by the fact that oil stains and the like stay on the surface of the butt joint rib can be effectively prevented;

in one embodiment, the second connection unit forms a spray chamber of the spray arm under compression of the first and second housings;

the spraying chamber is communicated with the water inlet pipe to form a flow channel of the washing liquid;

in one embodiment, the first connection unit and the second connection unit are sealed by any one of a flat surface, a plug, and a stepped labyrinth formed at the contact end.

Still further, a third connecting unit for enhancing the overall strength of the spray arm is arranged between the first connecting unit and the second connecting unit.

Still further, the

The third connecting unit forms a fixed connecting structure under the action of the first shell and the second shell to realize the isolation and sealing of the spray arm;

in one embodiment, the third connection unit is fixedly connected by means of thermal welding.

And, said

The flow guide structure is provided with a structure for conveying the washing liquid from the water inlet end of the spraying cavity to the far end of the spraying cavity along at least one section of circumferential track, the circumferential motion reduces the impact on the inner wall of the spraying arm when the washing liquid enters the spraying cavity, and the phenomenon of sudden pressure increase in the spraying cavity is also avoided;

in one embodiment, the flow guide structure is integrated with the inner wall of the spray arm and extends into the spray chamber, so that the area of a drainage basin of the washing liquid in the spray chamber is reduced, and the impact of the washing liquid on the inner wall of the spray arm is further avoided;

in one embodiment, an opening is arranged between the flow guide structure and the inner wall of the spray arm, and the washing liquid is conveyed from the water inlet end of the spray chamber to the far end of the spray chamber from the opening;

in one embodiment, the flow directing structure comprises

The first diversion section makes the washing liquid move along at least one section of circular track after entering the spraying chamber from the water inlet pipe;

and guiding the washing liquid from the water inlet end of the spraying cavity to the second flow guide section at the far end of the spraying cavity.

Further, the

The first flow guide section is an arc-shaped structure which extends from the inner wall of the spray arm to the spray chamber around the water inlet end of the spray arm, and the arrangement of the arc-shaped structure is matched with the flow of the washing liquid in the spray chamber, so that the resistance to the flow of the washing liquid is reduced, and a good guiding effect is achieved;

in one embodiment, the first diversion sections are at least two sections which are oppositely arranged on the inner wall of the spray arm, so that the washing liquid can form at least one section of circumferential track along the arc-shaped structure of the first diversion structure.

Further, the

The second flow guide section is connected with the first flow guide section and extends from the opening to the far end of the spraying cavity;

in one embodiment, the basin formed by the washing liquid in the second diversion section is gradually enlarged from the side of the second diversion section close to the water inlet end of the containing chamber to the side of the far end of the containing chamber, so that the washing liquid can be accelerated from circular motion to be changed into a linear motion structure, the washing liquid can reach the spraying working position more quickly, and the normal use of the spraying arm is ensured.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the pressure-adjustable adjusting assembly is arranged in the spraying cavity of the spraying arm, so that the balance of air pressure in the spraying cavity can be adjusted along with the flowing of the washing liquid in the spraying cavity, the accuracy of water injection quantity of the spraying arm is ensured, the washing efficiency is improved, and the potential safety hazard is avoided;

2. by changing the structure of the spray arm, the sensor can correctly and accurately sense the actual water injection amount in the initial stage of water injection, so that the accurate control of the water injection amount is realized;

3. the adjusting assembly is provided with a structure which is matched with the flowing of the washing liquid in the spraying cavity, such as the opening direction, the opening angle, the arrangement of fluid in the spraying cavity and the like, so that the flowing smoothness of the washing liquid in the spraying cavity and the convenience of pressure adjustment in the spraying cavity are further enhanced;

4. the abutting ribs are arranged in the spray arm, the upper ribs and the lower ribs can be abutted and closed, the strength of the spray arm is increased, food residues and other dirt are prevented from contacting the uneven welding ribs on the surface to cause residue, and meanwhile, the abutting ribs are smooth in surface, so that oil stains and the like can be effectively prevented from remaining on the surface of the abutting ribs to cause accumulation;

5. the spray arm is internally provided with the flow guide structure which can guide the flow of the washing liquid, so that the phenomenon that the pressure in the spray chamber is suddenly increased when the washing liquid flows into the spray chamber from the water inlet pipe, the measurement accuracy of the water injection sensor is further influenced, and the normal use of the spray arm is also ensured;

6. the flow guide structure arranged in the spray arm has a structure which leads the washing liquid to the far end from the water inlet end of the spray arm, so that the washing liquid can reach the working position quickly while the pressure in the spray chamber is prevented from suddenly increasing, and the washing function of the spray arm is realized.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

FIG. 1 is a schematic axial view of a spray assembly of the present invention;

FIG. 2 is a schematic side view of the spray apparatus of the present invention in half section, viewed from the bottom, from the axial side;

FIG. 3 is a first schematic view of a spray assembly according to the present invention on a semi-sectional side;

FIG. 4 is a second schematic view of the semi-sectional side of the spray apparatus of the present invention;

FIG. 5 is a third schematic view of the side of the half-section of the spray apparatus of the present invention.

In the figure: 1. a spray arm; 101. a first housing; 102. a second housing; 2. a spray chamber; 3. an adjustment assembly; 301. a first adjusting unit; 302. a second adjusting unit; 303. a groove; 304. a rotating unit; 4. a connecting portion; 401. a first connecting unit; 402. a second connection unit; 403. a third connecting unit; 5. a water inlet pipe; 6. a flow guide structure; 601. a first flow guide section; 602. a second flow guide section; 603. and (4) opening.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Before the dishwasher works, a starting stage of injecting water into the spray arm 1 to enable the spray arm 1 to reach a state of being capable of washing is needed, when the dishwasher injects water into the spray arm 1, air in the spray arm 1 can cause pressure in the spray arm 1 to suddenly increase due to extrusion of washing liquid, as a plurality of spray holes with different directions are distributed on the spray arm 1, high-pressure gas can pass through the spray holes at high speed to cause larger air resistance, and a sensor for detecting water injection quantity can monitor a water injection motor in real time in the process of injecting water into the spray arm 1, due to the increase of the air resistance, the sensor for detecting the water injection quantity can wrongly interpret the rotating power of the motor at the moment, the air resistance is wrongly calculated as the injected water quantity, so that the water injection quantity is not consistent with the water injection quantity actually required, and further the effect of the dishwasher for cleaning tableware is influenced, meanwhile, the upper part and the lower part of the common spray arm 1 are connected through internal welding ribs, and the welded ribs are directly exposed in cleaning water and are easy to be connected with food residues or dirt such as grease in the water in the using process. Because welding muscle surface unevenness, food waste etc. remain the accumulation on the muscle easily after long-time the use, cause spray arm 1 weight increase, effective water injection volume reduces, leads to spray arm 1 energy consumption increase. Meanwhile, residues and the like easily fall under the action of water flow impact to block the spraying port, so that the cleaning effect is reduced, and poor user experience is caused. According to the invention, by increasing the rib position in the spray arm 1, accumulation of residue oil stains on the welding ribs can be effectively prevented, and the influence of the oil stains in water on the spray arm 1 after long-time use can be maximally reduced.

In view of the above technical problems in practical applications, the present invention adopts the following technical solutions.

Fig. 1 is an isometric view of the spraying device of the present invention, which mainly shows the position of the adjusting assembly 3 on the spraying arm 1, as shown in fig. 1, the adjusting assembly 3 is arranged on the side of the spraying arm 1 close to the water inlet end, i.e. the side of the rotation center, so that when the washing liquid flows into the spraying chamber 2 from the water inlet pipe 5 at the water inlet end of the spraying arm 1, the gas in the spraying chamber 2 can be discharged from the adjusting assembly 3 at the near end in the first time, thereby ensuring the accuracy of water injection.

Fig. 2 is a schematic bottom view of a cross-sectional view of the spray device of the present invention, mainly showing an internal structure of the spray arm 1 after being cut open, and as seen from a bottom view, the spray chamber 2 is disposed inside the spray arm 1, the adjusting assembly 3 is disposed near a rotation center of the spray arm 1, and the flow guide structure 6 is disposed inside the spray arm 1, and fig. 2 mainly shows a disposition relationship of components inside the adjusting assembly 3, which provides a good help for a person skilled in the art to better understand the present invention.

Fig. 3 is a first schematic sectional view of the spray apparatus of the present invention, which shows a part of the spray arm 1 in section, and mainly shows the positional relationship of the spray chamber 2 clamped by the first housing 101 and the second housing 102 of the spray arm 1, and the positional relationship of the adjustment assembly 3 in the spray arm 1 in a side view.

Fig. 4 is a second schematic cross-sectional view of the spray device of the present invention, which shows a part of the cross-section of the spray arm 1, mainly showing the connection portion 4 inside the spray arm 1, and it can be seen from fig. 4 that the first connection unit 401 and the second connection unit 402 achieve the sealing of the spray chamber 2 under the compression of the first housing 101 and the second housing 102 of the spray arm 1, and fig. 4 shows the connection portion 4 fully, which provides a good help for those skilled in the art to better understand the present invention.

Fig. 5 is a third schematic sectional view of the spray apparatus of the present invention, which shows a part of the spray arm 1 in a sectional view, and mainly shows the connecting portion 4 and the adjustment assembly 3 further, so that the connecting portion 4 and the adjustment assembly 3 of the present invention can be further understood by those skilled in the art from a bottom view.

As shown in fig. 1 to 5, the spray device of the dishwasher of the present invention is disposed in a water tank of the dishwasher, and can be rotatably disposed or fixedly disposed, and the disposition position of the spray device can be the bottom of the water tank or the side wall or the top, but is not limited thereto, and a person skilled in the art can change the disposition position of the spray device according to actual needs, the spray device of the present invention includes a spray arm 1, a water inlet pipe 5 connected with the spray arm 1 and providing spray water to the spray arm 1, a spray chamber 2 communicated with the water inlet pipe 5 is disposed on the spray arm 1, and the washing liquid enters the spray holes of the spray arm 1 through the spray chamber 2, so as to realize the spray operation of the dishwasher, since the washing liquid extrudes the space in the spray chamber 2, the gas overflows from the spray holes, but since the aperture of the spray holes is small, the washing liquid is injected into the spray chamber 2 in an initial stage, the pressure in the spraying chamber 2 can suddenly increase, so that the washing liquid in the spraying arm 1 can be judged by mistake for a sensor for detecting, the spraying arm 1 can not work normally, the supply of the washing liquid is insufficient, and the like, therefore, the invention is provided with the adjusting component 3 which can ensure that the pressure value in the spraying chamber 2 changes stably along with the inflow of the washing liquid into the spraying chamber 2, and the adjusting component 3 is configured to discharge the medium in the spraying chamber 2 from the adjusting component 3 along with the flowing of the washing liquid in the spraying chamber 2.

In the normal operation process of the dishwasher, how to make the adjusting component 3 not affect the operation of the spray arm 1 becomes more prominent, the adjusting component 3 of the invention is arranged on the inner wall of the spray arm 1 to form a part of the spray chamber 2 and form an included angle with the flowing direction of the washing liquid in the spray chamber 2, after the spray chamber 2 is filled with the washing liquid or the buoyancy of the washing liquid to the adjusting component 3 is larger than the self weight of the adjusting component 3, the adjusting component 3 is closed to stop the adjustment of the pressure in the spray chamber 2, in order to further maintain the state, the adjusting component 3 is provided with a certain inclination angle in the flowing direction of the washing liquid, so that when the washing liquid flows in the spray chamber 2, the adjusting component 3 has an upward buoyancy effect and a pressure effect in the flowing direction, under the double acting forces, the normal work of the spray arm 1 is ensured.

The spray arm 1 usually comprises an upper part and a lower part, the upper part and the lower part of the common spray arm 1 are connected through internal welding ribs, and the welded ribs are directly exposed in cleaning water and are easily connected with dirt such as food residues or grease in the water in the use process. Because welding muscle surface unevenness, food waste etc. remain the accumulation on the muscle easily after long-time the use, cause spray arm 1 weight increase, effective water injection volume reduces, leads to spray arm 1 energy consumption increase. Meanwhile, residues and the like easily fall under the action of water flow impact to block the spraying port, so that the cleaning effect is reduced, and poor user experience is caused. According to the invention, by increasing the rib position in the spray arm 1, accumulation of residue oil stains on the welding ribs can be effectively prevented, and the influence of the oil stains in water on the spray arm 1 after long-time use can be maximally reduced.

As shown in fig. 2, 4 and 5, the present invention is directed to the problem of welding ribs on the spray arm 1, and the present invention is provided with a connecting portion 4 configured to form a smooth transition structure on a contact surface of the spray arm 1 and the washing liquid, where the spray arm 1 includes a first housing 101 and a second housing 102 arranged up and down, and the up and down can be understood as the up and down in the vertical direction when the spray arm 1 is horizontally placed, and further, the first housing 101 and the second housing 102 are fastened to form a spray chamber 2, and the first housing 101 and the second housing 102 are in smooth transition connection; the first casing 101 and the second casing 102 are formed of a connecting portion 4 including at least two layers of an inner layer and an outer layer.

As shown in fig. 2, since the initial stage of injecting the washing liquid into the spray arm 1 has a large influence on the air pressure in the spray chamber 2, the present invention provides a flow guiding structure 6 in the spray arm 1, which has a flow guiding and buffering effect on the flow of the washing liquid in the spray chamber 2, wherein the flow guiding structure 6 is configured with a structure for conveying the washing liquid from the water inlet end of the spray chamber 2 to the far end of the spray chamber 2 along at least one section of circumferential track, and the circumferential motion reduces the impact on the inner wall of the spray arm 1 when the washing liquid enters the spray chamber 2, thereby avoiding the phenomenon of sudden pressure increase in the spray chamber 2.

The applications in the specific embodiments are as follows.

Example one

As shown in fig. 1 to 5, the spraying device of the dishwasher according to the present embodiment includes a spraying arm 1 disposed in a water tank, and a water inlet pipe 5 communicated with the spraying arm 1 and providing spraying water to the spraying arm 1, wherein the spraying arm 1 according to the present embodiment has a spraying chamber 2 communicated with the water inlet pipe 5; along with the washing liquid flowing into the spraying chamber 2, the adjusting component 3 can ensure the pressure value in the spraying chamber 2 to change stably.

Because the space in the spraying cavity 2 is extruded by the washing liquid, the gas overflows from the spraying holes, but the aperture of the spraying holes is small, and the pressure in the spraying cavity 2 suddenly increases in the initial stage of injecting the washing liquid into the spraying cavity 2, so that the washing liquid in the spraying arm 1 is misjudged for a sensor for detecting, the spraying arm 1 cannot normally work, the supply of the washing liquid is insufficient, and the like.

Example two

As shown in fig. 1 to 5, the present embodiment is further limited to the first embodiment, in the adjusting assembly 3 of the present embodiment, along with the flow of the washing liquid in the spraying chamber 2, the medium in the spraying chamber 2 is discharged from the adjusting assembly 3, where the medium can be understood as gas or other medium existing before the washing liquid enters the spraying chamber 2, and the medium is discharged from the adjusting assembly 3, so that the pressure in the spraying chamber 2 is balanced, and the phenomenon that the pressure in the spraying chamber 2 suddenly increases due to the injection of the washing liquid is avoided.

Further, when the washing liquid inside the spraying chamber 2 reaches a preset value or the whole spraying chamber 2 is filled, the adjusting assembly 3 stops adjusting the pressure value in the spraying chamber 2, and those skilled in the art can understand that when the spraying chamber 2 is filled with the washing liquid, the adjusting assembly 3 is closed due to the buoyancy, or when the sensor detects that the injection of the washing liquid reaches the preset value, the washing work of the spraying arm 1 is started, and at this time, the adjusting assembly 3 is also closed.

EXAMPLE III

As shown in fig. 1 to 5, the present embodiment is further limited to any one of the first embodiment or the second embodiment, the adjusting assembly 3 of the present embodiment includes a first adjusting unit 301 disposed on an inner wall of the spray arm 1 and communicating an inner space and an outer space of the spray chamber 2, and since the aperture of the spray hole of the spray arm 1 is mostly narrow and small, when the gas flows rapidly, the pressure in the spray chamber 2 is often difficult to release, and therefore, the first adjusting unit 301 of the present embodiment communicates the inner space and the outer space of the spray chamber 2, so that the pressure in the spray chamber 2 is well balanced.

Example four

As shown in fig. 1 to 5, the present embodiment is a further limitation of the third embodiment, the first adjusting unit 301 of the present embodiment is a through hole disposed at the upper part of the spray arm 1, and the upper part of the spray arm 1 can be understood as that, when the spray arm 1 is horizontally disposed, in the vertical direction, since the upper and lower housings are mostly buckled and connected to each other, the first adjusting unit 301 is disposed at the upper part of the spray arm 1, that is, the upper housing, in order to satisfy the flowing of the washing liquid in the spray arm 1.

EXAMPLE five

As shown in fig. 1 to 5, the present embodiment is further defined by any one of the first to fourth embodiments, the adjusting assembly 3 of the present embodiment further includes a second adjusting unit 302 disposed on an inner wall of the spray arm 1, and under the action of the washing liquid in the spray chamber 2, the second adjusting unit 302 can open or close the first adjusting unit 301, the second adjusting unit 302 can achieve the function that the first adjusting unit 301 is opened or closed along with the flow of the washing liquid in the spray chamber 2, and the second adjusting unit 302 gradually closes the first adjusting unit 301 along with the flow of the washing liquid in the spray chamber 2.

EXAMPLE six

As shown in fig. 1 to 5, this embodiment is a further limitation of any one of the first to fifth embodiments, in this embodiment, the second adjusting unit 302 may be turned downward under the action of gravity, so that the first adjusting unit 301 is in an open state; those skilled in the art will understand that this arrangement is a hinge-like structure, and the second adjusting unit 302 is rotated to open or close the first adjusting unit 301.

Further, the buoyancy of the washing liquid is greater than the gravity of the second regulating unit 302 at least when the spraying chamber 2 is filled with washing liquid, ensuring that the regulating assembly 3 is closed and the pressure in the spraying chamber 2 is no longer regulated at least when the spraying chamber 2 is filled with washing liquid. In this embodiment, the buoyancy of the washing liquid is greater than the gravity of the second adjusting unit 302 to further realize the opening and closing of the first adjusting unit 301, and the buoyancy of the washing liquid may be greater than the gravity of the second adjusting unit 302 before the spraying chamber 2 is filled with the washing liquid, so that the first adjusting unit 301 can be opened and closed in one of the two situations.

Second adjustment unit 302 for set up in spray arm 1 inboard, can open or close first adjustment unit 301's movable plate, the higher authority is provided with the through-hole that is used for passing rotatable parts, under natural state, the movable plate hangs down naturally owing to the effect of self gravity, forms certain contained angle with the spray arm 1 lower surface of horizontal direction, first adjustment unit 301 does not have from top to bottom and shelters from, the air of spray arm 1 inner chamber can be discharged rapidly through this passageway in water injection earlier stage, and air resistance is little.

When the washing liquid in the spray arm 1 contacts the second adjusting unit 302 and continuously rises, the buoyancy of the washing liquid and the thrust of the water level rising to the second adjusting unit 302 overcome the gravity of the second adjusting unit 302, and the second adjusting unit 302 is pushed to be attached to the lower surface of the first shell 101 of the spray arm 1, so that the first adjusting unit 301 is sealed, and the function of a one-way valve is achieved.

EXAMPLE seven

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to sixth embodiments, the second adjusting unit 302 of this embodiment can be turned around a rotating unit 304 along with the flow of the washing liquid in the spraying chamber 2 to open or close the second adjusting unit 302, the rotating connection facilitates the realization of the function of the adjusting assembly 3, further, the rotating unit 304 passes through a through hole provided on the second adjusting unit 302, is connected to the inner wall of the spraying arm 1, and can generate a rotating structure under the driving of the second adjusting unit 302, this arrangement can be understood as that the adjusting assembly 3 is normally opened in a normal state, so as to ensure the balance of the air pressures inside and outside the spraying arm 1, and also ensure that the air in the spraying chamber 2 can be exhausted in the first time when the washing liquid enters the spraying chamber 2, and those skilled in the art can understand that the rotating unit 304 is provided with a structure for absorbing the washing liquid to act on the second adjusting unit 302 A force-rotating member, such as a rotatable torsion spring or a member with its own elasticity.

Example eight

As shown in fig. 1 to 5, the present embodiment is further limited to any one of the first to seventh embodiments, in the present embodiment, the connection between the rotating unit 304 and the inner wall of the spray arm 1 is a snap joint, the rotating unit 304 is a detachable snap joint in the present embodiment, one end of the rotating unit is fixed in the groove 303, and the other end of the rotating unit passes through the through hole formed in the second adjusting unit 302 to achieve the snap joint, so as to achieve the rotation of the second adjusting unit 302, specifically, the snap joint itself can rotate, the second adjusting unit 302 is equivalent to a snap joint that floats on the snap joint passing through the second adjusting unit 302, when the second adjusting unit 302 changes under the action of the washing liquid, the second adjusting unit can rotate around the snap joint, and the snap joint also plays a certain limiting role.

Example nine

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to eighth embodiments, the adjusting assembly 3 of this embodiment further includes a groove 303 extending from one side of an inner surface of the spray arm 1 to an outside of the spray arm 1, when the first adjusting unit 301 is in a closed state, the second adjusting unit 302 is located inside the groove 303 to achieve a smooth transition with the inner surface of the spray arm 1, and when the first adjusting unit 301 is in a closed state, the second adjusting unit 302 and an inner wall of the spray arm 1 form a part of the spray chamber 2, so that the circulation of the washing liquid in the spray chamber 2 is smoother, and the groove 303 is arranged to enable the second adjusting unit 302, the spray chamber 2 and the inner wall of the spray arm 1 to be well fused into a plane, thereby achieving a fluid connection and a smooth transition.

Example ten

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to ninth embodiments, in which the adjusting assembly 3 is disposed on the inner wall of the spray arm 1, forms a part of the spray chamber 2, and forms an included angle with the flowing direction of the washing liquid in the spray chamber 2, after the spray chamber 2 is filled with the washing liquid or the buoyancy of the washing liquid to the adjusting assembly 3 is greater than the self-weight of the adjusting assembly 3, the adjusting assembly 3 is closed, and the adjustment of the pressure in the spray chamber 2 is stopped, and in order to further maintain this state, the adjusting assembly 3 is set to have a certain inclination angle in the flowing direction of the washing liquid, so that when the washing liquid flows in the spray chamber 2, there is both an upward buoyancy effect on the adjusting assembly 3 and a pressure effect in the flowing direction, and under double acting forces, the normal work of the spray arm 1 is ensured.

EXAMPLE eleven

As shown in fig. 1 to 5, this embodiment is further defined by any one of the first to tenth embodiments, in which the groove 303 is disposed on the inner wall of the spray arm 1, and forms an included angle with the flowing direction of the washing liquid in the spray chamber 2, and when the washing liquid flows in the spray chamber 2, the included angle is disposed, so that the gas is conveniently discharged from the first adjusting unit 301; the included angle formed between the adjusting assembly 3 and the flowing direction of the washing liquid in the spraying chamber 2 in the embodiment can be understood as the inclination angle of the adjusting assembly 3 facing the flowing direction of the washing liquid in the spraying chamber 2, and the adjusting assembly 3 is provided with a structure which is adapted to the flowing of the washing liquid in the spraying chamber 2, such as the opening direction, the opening angle, the fluid arrangement in the spraying chamber 2 and the like, so that the smoothness of the flowing of the washing liquid in the spraying chamber 2 and the convenience of pressure adjustment in the spraying chamber 2 are further enhanced.

Example twelve

As shown in fig. 1 to 5, in this embodiment, which is a further limitation of any one of the first to eleventh embodiments, an included angle is formed between the groove 303 and the flowing direction of the washing liquid in the spraying chamber 2, and is an acute angle relative to the flowing direction of the washing liquid, after the spraying chamber 2 is filled with the washing liquid or the buoyancy of the washing liquid to the adjusting assembly 3 is larger than the self weight of the adjusting assembly 3, the adjusting assembly 3 is closed, the adjustment of the pressure in the spraying chamber 2 is stopped, in order to further maintain this state, the adjustment assembly 3 is set to a certain inclination angle in the flow direction of the washing liquid, when the washing liquid flows in the spraying chamber 2, the upward buoyancy effect and the pressure effect in the flowing direction are provided for the adjusting assembly 3, and the normal work of the spraying arm 1 is ensured under the dual acting force.

EXAMPLE thirteen

As shown in fig. 1 to 5, this embodiment is a further limitation of any one of the first to twelfth embodiments, and the first adjusting unit 301 of this embodiment is a through hole disposed in the groove 303.

Example fourteen

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to thirteenth embodiments, in this embodiment, at least one of the adjusting assemblies 3 is disposed on the inner wall of the spray arm 1 near the water inlet pipe 5, so as to ensure the first time when the washing liquid flows into the spray chamber 2, and to achieve adjustment of the pressure in the spray chamber 2.

Example fifteen

As shown in fig. 1 to 5, the present embodiment is further defined by any one of the first to the fourteenth embodiments, and the spray arm 1 of the present embodiment has a first housing 101 and a second housing 102; and a spraying chamber 2 formed by buckling a first shell 101 and a second shell 102, wherein the first shell 101 and the second shell 102 are in smooth transition connection, the upper and lower can be understood as the upper and lower of the vertical direction when the spraying arm 1 is horizontally placed, further, the first shell 101 and the second shell 102 are formed by a connecting part 4 comprising at least an inner layer and an outer layer, and the connecting part 4 is respectively arranged on the first shell 101 and the second shell 102.

Example sixteen

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to fifteenth embodiments, in which the connection portion 4 of this embodiment includes a first connection unit 401 forming a part of an outer surface of the spray arm 1 and a second connection unit 402 forming a part of an inner wall of the spray chamber 2, after the first housing 101 and the second housing 102 are fastened, the outer surface of the spray arm 1 formed by the first connection unit 401 is in smooth transition, the spray chamber 2 formed by the second connection unit 402 is also in smooth transition, and the spray arm 1 is provided with a docking rib inside, the upper and lower ribs can be docked and closed, so that the strength of the spray arm 1 is increased, dirt such as food residue and the like can be prevented from contacting the uneven welding rib on the surface to cause residue, and meanwhile, the inner and outer surfaces of the spray arm 1 are set in smooth transition, so that the dirt and the like can be effectively prevented from staying on the surface to cause accumulation, and when the washing liquid flows, the smooth transition of the inner wall also reduces the resistance to the washing liquid and avoids energy losses.

In this embodiment, at least the outer surface of the spray arm 1 formed by the first connection unit 401 is smoothly transited, and a part of the inner wall of the spray chamber 2 formed by the second connection unit 402 may also be smoothly transited, but only as an extension example of the smooth transition of the first connection unit 401, the smooth transition of the first connection unit 401 may be implemented to solve the technical problem described in the present invention.

Example seventeen

As shown in fig. 1 to 5, this embodiment is further defined by any one of the first to sixteenth embodiments, in this embodiment, the first connecting unit 401 is pressed by the first housing 101 and the second housing 102 to separate and seal the inner space and the outer space of the spray arm 1, and further, the second connecting unit 402 is pressed by the first housing 101 and the second housing 102 to form the spray chamber 2 of the spray arm 1; spray chamber 2 and inlet tube 5 intercommunication, form the flow path of washing liquid, through two mutually supporting of first coupling unit 401 and second coupling unit 402, independent connecting portion 4 sets up, when having increased spray arm 1 intensity, it causes to remain to block filth such as food waste to contact surperficial unevenness's welding muscle to the butt joint muscle surface is smooth, can prevent effectively that greasy dirt etc. from stopping to cause the accumulation at its surface.

In this embodiment, the first connection unit 401 and the second connection unit 402 are connected and sealed by pressing, and the connection by other heating methods such as thermal welding is avoided, so that the unevenness of the connection surface is avoided, and further, the first connection unit 401 and the second connection unit 402 are sealed by any one of the contact end plane, the insertion connection, and the stepped labyrinth.

EXAMPLE eighteen

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to seventeenth embodiments, in this embodiment, a third connecting unit 403 for enhancing the overall strength of the spray arm 1 is disposed between the first connecting unit 401 and the second connecting unit 402, the third connecting unit 403 forms a fixed connecting structure under the action of the first housing 101 and the second housing 102 to realize the isolation and sealing of the spray arm 1, and the third connecting unit 403 is disposed to realize the buckling of the first housing 101 and the second housing 102 to isolate the internal space and the external space of the spray arm 1, so that the spray chamber 2 in the spray arm 1 forms an independent chamber, thereby ensuring the pressure inside the spray chamber 2 and further ensuring the normal operation of the dishwasher.

Example nineteen

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to eighteen embodiments, and the third connecting unit 403 of this embodiment is fixedly connected by thermal welding.

Example twenty

As shown in fig. 1 to 5, this embodiment is further defined by any one of the first to nineteenth embodiments, and the spray arm 1 of this embodiment has a spray chamber 2 communicated with a water inlet pipe 5; to the flow of washing liquid in spraying cavity 2, play drainage and cushioning effect's water conservancy diversion structure 6, wherein, water conservancy diversion structure 6 disposes with washing liquid in order to follow at least one section circumference orbit, carries to the structure that sprays the cavity 2 distal end from the end of intaking that sprays cavity 2, and circular motion has reduced washing liquid and has got into when spraying cavity 2 in, to the impact of spraying arm 1 inner wall, has also avoided the pressure surge phenomenon in the cavity 2 that sprays.

The end of intaking that sprays cavity 2 described in this embodiment promptly with spray arm 1 and inlet tube 5 junction, the distal end that sprays cavity 2 can be understood as on the extension arm that sets up the hole that sprays on spray arm 1, can know from the attached drawing that spray arm 1 is rectangular form setting, its both ends be this embodiment spray cavity 2 distal end.

Example twenty one

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to twenty embodiments, in this embodiment, the flow guide structure 6 is integrated with the inner wall of the spray arm 1, and extends into the spray chamber 2, so as to reduce the area of the flow field of the washing liquid in the spray chamber 2, and after the washing liquid flows into the spray chamber 2 from the water inlet pipe 5, the washing liquid is guided by the flow guide structure 6 when moving to the far end of the spray chamber 2, thereby avoiding collision caused by too fast inflow, and also having a certain guiding effect on the flow direction of the washing liquid.

Example twenty two

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to twenty-first embodiments, in this embodiment, an opening 603 is disposed between the flow guiding structure 6 and the inner wall of the spray arm 1, the opening 603 provides a passage for the cleaning liquid to flow from the water inlet end of the spray chamber 2 to the far end, and when the cleaning liquid enters the spray chamber 2 in the early stage, the cleaning liquid is guided by the flow guiding structure 6 and is transported from the water inlet end of the spray chamber 2 to the far end of the spray chamber 2 through the opening 603.

Example twenty three

As shown in fig. 1 to 5, the present embodiment is further defined by any one of the first to twenty-two embodiments, and the flow guiding structure 6 of the present embodiment includes a first flow guiding section 601 for making the washing liquid move along at least one section of circular track after entering the spraying chamber 2 from the water inlet pipe 5; the washing liquid is guided from the water inlet end of the spray chamber 2 to the second guide section 602 at the far end of the spray chamber 2.

Example twenty-four

As shown in fig. 1 to 5, this embodiment is further limited to any one of the first to twenty-third embodiments, in which the first diversion section 601 is an arc-shaped structure extending from the inner wall of the spray arm 1 to the spray chamber 2 around the water inlet end of the spray arm 1, and the arrangement of the arc-shaped structure matches with the flow of the washing liquid in the spray chamber 2, so as to reduce the resistance to the flow of the washing liquid and simultaneously play a good role in guiding the washing liquid. At least two first diversion sections 601 are oppositely arranged on the inner wall of the spray arm 1, so that the washing liquid can form at least one section of circumferential track along the arc-shaped structure of the first diversion structure 6. The second flow guiding section 602 is connected to the first flow guiding section 601 and extends from the opening 603 to the far end of the spraying chamber 2.

Specifically, the first diversion section 601 is arranged along the water inlet end in the spray arm 1 in an unclosed circular or circular arc shape, at least two sections are arranged in the spray chamber 2, after the washing liquid enters the spray chamber 2 from the water inlet pipe 5, because the impact force is larger, the first diversion section 601 splashes around in the spraying chamber 2, because the connection area between the water inlet end and the far end of the spraying chamber 2 is reduced, therefore, most of the washing liquid is intercepted by the first diversion section 601 at the water inlet end of the spraying chamber 2 and follows at least one section of circumferential track, the first flow guiding section 601 can move clockwise or counterclockwise, which is not further limited by this embodiment, because the first diversion section 601 is arranged in an arc shape, the washing liquid can not pass through the opening 603 when the washing liquid is at a high flow speed, when the flow speed of the washing liquid is reduced by the first guide section 601, the washing liquid can flow into the second guide section 602 from the opening 603.

Example twenty-five

As shown in fig. 1 to 5, the present embodiment is further defined by any one of the first to twenty-fourth embodiments, in the present embodiment, the flow field formed by the washing liquid in the second flow guiding section 602 gradually increases from the side of the second flow guiding section 602 close to the water inlet end of the accommodating chamber to the side of the far end of the accommodating chamber, so that the washing liquid can be accelerated from the circular motion to the linear motion, the washing liquid can reach the spraying position more quickly, and the normal use of the spray arm 1 is ensured.

Specifically, when the washing liquid flows to the second diversion section 602, the second diversion section 602 accelerates the washing liquid when flowing through the second diversion section 602 through a gradually increasing watershed channel, obtains a higher flowing speed, and flows to the spraying holes arranged on the spraying arm 1, so as to realize spraying operation; the second guide section 602 is gradually arranged from a side close to the water inlet end of the receiving chamber to a side far from the receiving chamber along with the flow of the washing liquid, and can be implemented by arranging the second guide section 602 in an arc shape or inclined.

Example twenty-six

A dishwasher, comprising the spraying device of the dishwasher of any one of the first embodiment to the twenty-fifth embodiment.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A spray device of a dishwasher comprises

A spray arm (1);

the water inlet pipe (5) is communicated with the spray arm (1) and provides spray inlet water for the spray arm (1);

the method is characterized in that: the spray arm (1) is provided with

A first housing (101) and a second housing (102);

the spraying chamber (2) is formed by buckling a first shell (101) and a second shell (102) and is communicated with the water inlet pipe (5);

the first shell (101) and the second shell (102) are in smooth transition connection;

an adjusting component (3) for maintaining the pressure value in the spraying chamber (2) to change steadily at the initial stage of the washing liquid flowing into the spraying chamber (2);

the flow guide structure (6) plays a role in guiding and buffering the flow of the washing liquid in the spraying chamber (2).

2. The spray device of a dishwasher according to claim 1, wherein: the above-mentioned

The adjusting component (3) is configured to discharge the medium in the spraying chamber (2) from the adjusting component (3) by the acting force of the washing liquid entering the spraying chamber (2);

preferably, the adjustment assembly (3) is configured such that the adjustment assembly (3) stops the adjustment of the pressure value inside the spraying chamber (2) when the washing liquid inside the spraying chamber (2) reaches a preset value or fills the whole spraying chamber (2).

3. The spray device of a dishwasher according to claim 2, wherein: the above-mentioned

The adjusting assembly (3) comprises a first adjusting unit (301) which is arranged on the inner wall of the spraying arm (1) and is communicated with the inner space and the outer space of the spraying cavity (2);

preferably, the first adjusting unit (301) is arranged at the upper part of the spray arm (1) and is in a normally open structure;

more preferably, the first adjusting unit (301) is a through hole provided at an upper portion of the spray arm (1).

4. The spray device of a dishwasher according to claim 3, wherein: the above-mentioned

The adjusting component (3) also comprises a second adjusting unit (302) which is arranged on the inner wall of the spraying arm (1) and can open or close the first adjusting unit (301) under the action of the washing liquid in the spraying chamber (2);

preferably, the second adjustment unit (302) is configured to gradually close the first adjustment unit (301) according to a gradual increase of the space occupied by the washing liquid within the spray chamber (2);

more preferably, the second adjusting unit (302) can be turned downwards under the action of gravity, so that the first adjusting unit (301) is in an open state;

still preferably, at least when the washing liquid fills the spray chamber (2), the buoyancy of the washing liquid to the second adjustment unit (302) is greater than the gravity of the second adjustment unit (302);

it is also preferable that the second adjusting unit (302) can turn around a rotating unit (304) according to the self gravity or the buoyancy of the washing liquid to the second adjusting unit, so as to open or close the second adjusting unit (302);

preferably, the rotating unit (304) passes through a through hole arranged on the second adjusting unit (302), is connected with the inner wall of the spray arm (1), and can rotate under the driving of the second adjusting unit (302);

again preferably, the connection of the rotating unit (304) and the inner wall of the spray arm (1) is a detachable connection;

again preferably, the connection of the rotating unit (304) to the inner wall of the spray arm (1) is a snap connection.

5. The spray device of a dishwasher according to claim 1, wherein: the above-mentioned

The first shell (101) and the second shell (102) are composed of a connecting part (4) which comprises at least an inner layer and an outer layer;

preferably, the connection part (4) comprises a first connection unit (401) constituting a part of the outer surface of the spray arm (1) and a second connection unit (402) constituting a part of the inner wall of the spray chamber (2);

more preferably, at least the first connection unit (401) is smoothly transitionally connected;

it is further preferred that the second connection unit (402) forming part of the inner wall of the shower chamber (2) is also smoothly transitionally connected.

6. The spray device of a dishwasher according to claim 5, wherein: the above-mentioned

The first connecting unit (401) realizes the isolation and sealing of the inner space and the outer space of the spray arm (1) under the extrusion of the first shell (101) and the second shell (102);

preferably, the second connection unit (402) forms the spray chamber (2) of the spray arm (1) under compression of the first housing (101) and the second housing (102);

the spraying chamber (2) is communicated with the water inlet pipe (5) to form a flow channel of washing liquid;

more preferably, the first connection unit (401) and the second connection unit (402) are sealed by any one of a flat surface, a plug-in type, and a stepped labyrinth provided at the contact end.

7. A dishwasher spray unit according to any one of claims 5 or 6, wherein: the above-mentioned

A third connecting unit (403) for enhancing the overall strength of the spray arm is arranged between the first connecting unit (401) and the second connecting unit (402);

preferably, the third connecting unit (403) forms a fixed connecting structure under the action of the first shell (101) and the second shell (102) to realize the isolation and sealing of the spray arm (1);

more preferably, the third connecting unit (403) is fixedly connected by means of thermal welding.

8. The spray device of a dishwasher according to claim 1, wherein: the above-mentioned

The flow guide structure (6) is provided with a structure for conveying the washing liquid from the water inlet end of the spraying cavity (2) to the far end of the spraying cavity (2) along at least one section of circumferential track;

preferably, the flow guide structure (6) is integrated with the inner wall of the spray arm (1) and extends into the spray chamber (2);

more preferably, an opening (603) is arranged between the flow guide structure (6) and the inner wall of the spray arm (1), and the cleaning liquid is conveyed from the water inlet end of the spray chamber (2) to the far end of the spray chamber (2) from the opening (603);

still preferably, the flow guiding structure (6) comprises

A first diversion section (601) which makes the washing liquid move along at least one section of circular track after entering the spraying chamber (2) from the water inlet pipe (5);

and a second diversion section (602) guiding the washing liquid from the water inlet end of the spraying chamber (2) to the far end of the spraying chamber (2).

9. The spray device of a dishwasher according to claim 8, wherein: the above-mentioned

The first flow guide section (601) is of an arc structure which extends from the inner wall of the spray arm (1) to the spray chamber (2) around the water inlet end of the spray arm (1);

preferably, the first diversion sections (601) are at least two oppositely arranged on the inner wall of the spray arm (1) so that the washing liquid can form at least one section of circumferential track along the arc-shaped structure of the first diversion structure (6).

10. The spray device of a dishwasher according to claim 8, wherein: the above-mentioned

The second flow guide section (602) is connected with the first flow guide section (601) and extends from the opening (603) to the far end of the spraying chamber (2);

preferably, the flow field of the washing liquid formed by the second guide section (602) is gradually increased from the side of the second guide section (602) close to the water inlet end of the accommodating chamber to the side of the far end of the accommodating chamber.