阅读说明：本技术 一种洗碗机的喷淋装置 (Spraying device of dish washing machine ) 是由 苏晓慧 徐伟 杨林 于 2018-07-09 设计创作，主要内容包括：本发明公开了一种洗碗机的喷淋装置,包括喷淋臂；进水管,与喷淋臂连通,为喷淋臂提供喷淋进水；所述喷淋臂具有第一壳体和第二壳体；以及由第一壳体和第二壳体扣合形成、连通进水管的喷淋腔室；第一壳体和第二壳体光滑过渡连接；调整组件,设置于喷淋臂的内壁上,形成喷淋腔室的一部分,并与洗涤液体在喷淋腔室内的流动方向形成夹角。本发明提供一种洗碗机的喷淋装置,在喷淋臂的注水初期,喷淋臂内空气快速无阻力的排出,消除对注水传感器的影响,当水位达到一定高度后,在水压的作用下,克服的自身的重力,闭合密封；在喷淋臂上设置可以对接闭合的对接筋,阻挡食物残渣等污物接触到表面凹凸不平的焊接筋造成残留。(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; the adjusting component is arranged on the inner wall of the spraying arm to form a part of the spraying cavity and form an included angle with the flowing direction of the washing liquid in the spraying cavity. The invention provides a spraying device of a dish washing machine, in the initial stage of water injection of a spraying arm, air in the spraying arm is quickly discharged without resistance, the influence on a water injection sensor is eliminated, and when the water level reaches a certain height, the self gravity is overcome under the action of water pressure to close and seal; set up on the spray arm and can dock closed butt joint muscle, stop filths such as food waste to contact the welding muscle of surperficial unevenness and cause the residue.)

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;

the adjusting component (3) is arranged on the inner wall of the spraying arm (1) to form a part of the spraying chamber (2) and form an included angle with the flowing direction 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 1, 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 arranged at the upper part of the spray arm (1);

still preferably, the first conditioning unit (301) is formed on the surface of the spray arm (1) in fluid communication with the washing liquid;

it is also preferable that the surface of the first adjustment unit (301) formed on the spray arm (1) smoothly transitions with the inner surface 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 adjusting assembly (3) further comprises a groove (303) extending from one side of the inner surface of the spray arm (1) to the outside of the spray arm (1), and when the first adjusting unit (301) is in a closed state, the second adjusting unit (302) is located inside the groove (303) to realize a smooth transition with the inner surface of the spray arm (1).

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

The groove (303) is arranged 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);

preferably, the groove (303) forms an included angle with the flowing direction of the washing liquid in the spraying chamber (2), and the included angle is an acute angle relative to the flowing direction of the washing liquid;

more preferably, the first adjusting unit (301) is a through hole disposed in the groove (303).

6. The spray device of a dishwasher according to any one of claims 1 to 5, wherein: and at least one adjusting component (3) is arranged on the inner wall of the spraying arm (1) close to one side of the water inlet end of the spraying cavity (2).

7. 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) includes a first connection unit (401) constituting a part of an outer surface of the shower arm (1) and a second connection unit (402) constituting a part of an inner wall of the shower chamber (2).

8. The spray device of a dishwasher according to claim 7, wherein: at least a first connecting unit (401) is in smooth transition connection;

preferably, the second connection unit (402) forming a part of the inner wall of the spray chamber (2) is also smoothly transitionally connected.

9. The spray device of a dishwasher according to claim 7 or 8, 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.

10. A spray device of a dishwasher according to any one of claims 7 to 9, 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.

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. CN201711193988.8 discloses a spray arm, comprising: the middle part of the spray arm upper part is provided with a through hole; the middle part of the lower part of the spray arm is provided with a bulge, and the lower part of the spray arm is provided with a spray hole; the connecting piece, including the connecting portion of broad and narrower fixed part, connecting portion are located spray arm upper portion spare and spray arm between the lower part, the fixed part passes the through-hole of spray arm upper portion spare, be equipped with the draw-in groove with protruding adaptation bottom the connecting portion.

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; set up on the spray arm and can dock closed butt joint muscle, when having increased spray arm intensity, stop filths such as food waste and contact the welding muscle of surperficial unevenness and cause and remain to butt joint muscle surface is smooth, can prevent effectively that oil stain from waiting to cause the accumulation on its surface, and then influences spray arm's normal use.

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

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;

the adjusting component is arranged on the inner wall of the spraying arm to form a part of the spraying cavity and form an included angle with the flowing direction 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 arranged at the upper part of the spray arm;

in one embodiment, the first conditioning unit is formed on a surface of the spray arm in fluid communication with the wash liquid;

in one embodiment, the first adjusting unit forms a surface on the spray arm to smoothly transition with an inner surface 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 adjusting assembly further comprises a groove extending from one side of the inner surface of the spray arm to the outside of the spray arm, when the first adjusting unit is in a closed state, the second adjusting unit is located inside the groove to realize smooth transition with the inner surface of the spray arm, and when the first adjusting unit is in a closed state, the second adjusting unit and the inner wall of the spray arm form a part of the spray chamber, so that the circulation of the washing liquid in the spray chamber is smoother.

Further, the

The groove is arranged on the inner wall of the spraying arm, an included angle is formed between the groove and the flowing direction of the washing liquid in the spraying cavity, and when the washing liquid flows in the spraying cavity, the included angle is formed, so that gas is conveniently discharged from the first adjusting unit;

in one embodiment, the groove forms an included angle with the flowing direction of the washing liquid in the spraying chamber, and the included angle is an acute angle relative to the flowing direction of the washing liquid;

in one embodiment, the first adjusting unit is a through hole disposed in the groove.

Still further, at least one of the adjusting components is arranged on the inner wall of the spraying arm close to one side of the water inlet end of the spraying cavity, so that the first time that washing liquid flows into the spraying cavity is ensured, and the adjustment of the pressure in the spraying cavity can be realized.

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.

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. at the inside butt joint muscle that sets up of spray arm, two upper and lower muscle can dock the closure, have increased the intensity of spray arm, stop filths such as food waste and contact the welding muscle of surperficial unevenness and cause and remain, simultaneously, because the butt joint muscle surface is smooth, can prevent effectively that greasy dirt etc. from stopping to cause the accumulation on its surface.

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.